Wednesday, July 31, 2019
Ncm 104 Lecture Notes
NCM 104 DERMATOLOGIC DISORDERS I. REVIEW OF THE INTEGUMENTARY SYSTEM SKIN ââ¬â also known as the integument which means covering ââ¬â largest organ system ââ¬â barrier between external and internal environment FUNCTIONS OF THE SKIN 1) Protection ââ¬â protects from trauma (Mechanical, Radiation, Thermal) ââ¬â thickened skin on palms and soles provides additional covering against trauma r/t constant use ââ¬â Intact skin ââ¬â primary defense (prevents invasion of microorganisms) ââ¬â secretions(from sebaceous gland) are oily and slightly acidic (prevents/limits the mult. of mcgs) 2) Maintenance of Homeostasis prevents excessive loss of water and electrolytes 3) Thermoregulation ââ¬â affected by: > production of perspiration (dehydration fever) > activity > constriction (v dissipation of heat) and dilation of blood vessels > external BT -bodyââ¬â¢s core temperature 4) Reception of stimuli ââ¬â area in the brain ââ¬â SOMATOSENSORY CORTEX â⠬â abundance of free nerve endings and receptors * NOCICEPTOR ââ¬â pain * END-ORGAN OF RUFFINI/PACINIAN CORPUSCLE ââ¬â pressure * MECHANORECEPTOR ââ¬â machanical * MEISSNERââ¬â¢S CORPUCLES (MERKEL DISCS/CELLS) ââ¬â touch 5) Synthesis of vitamin D ââ¬â helps the uptake of Ca2+ and PO4 in intracellular level with the aid of sunlight activates Vitamin D to D3 (Cholecalciferol) 6) Immunity/processing of antigenic substances ââ¬â immunologically mediated defenses against microorganisms Ex. Langerhans cells Keratinocytes 7) Provide an outward appearance or cosmetic adornment ââ¬â acceptance of the appearance of the skin, hair, or nail is critical to psychosocial being 8) Excretion ââ¬â skin has a vital role in elimination of Na+ and H2O for homeostasis (maintaining balance in the internal environment) STRUCTURES OF THE SKIN LAYERS OF THE SKIN 1) EPIDERMIS ââ¬â avascular in nature ââ¬â Thickness: 0. 04 mm (eyelids- thinnest) to 1. mm (palms and soles- thickest) 4 Cell types of the Epidermis a) Keratinocytes ââ¬â 95% ââ¬â Produces Keratin ââ¬â insoluble protein ââ¬â helps create a waterproof barrier ââ¬â function in immunity ââ¬â control water loss b) Melanocytes ââ¬â located at the base of the epidermis ââ¬â Produces Melanin ââ¬â responsible for skin color and absorption of UV light ââ¬â the darker you are, the more protection against cancer ââ¬â acts as an umbrella covering that shields DNA from UV c) Merkelââ¬â¢s cell ââ¬â It is located at the basal layer of the epidermis but can usually be located only with the use of an electron microscope ââ¬â one of the receptors scarcely located in the palms, soles, oral and genital epithelium d) Langerhanââ¬â¢s cell ââ¬â play a role in cell-mediated immune responses in coordination with T cell ââ¬â originates in the bone marrow and migrates into the epidermis Layers of the Epidermis a) Stratum Germinativum/Basale â⠬â innermost ââ¬â cells are columnar in shape ââ¬â where melanin is found in greatest amount ââ¬â lies close to the dermis layer ââ¬â cells at the basale layer receives nutrition from the dermis via diffusion and undergo mitosis every 19 days and older cells are pushed upward undergoing changes in shape and chemical composition through a process known as keratinization ) Stratum Spinosum ââ¬â cells are irregularly-shaped known as prickle cells (have sharp cytoplasmic projection at the covering) c) Stratum Granulosum ââ¬â cells are nucleated granular cells which contain keratohyalin granules (contain lipids with desmosomal connections which helps to form waterproof barrier) water loss from the body *not responsible for water loss in the pores d) Stratum Lucidum ââ¬â thin transparent layer Skin moisture-can only be seen in thick skin like the palms and soles immunity e) Stratum Corneum ââ¬â composed of dead keratinized cells (contain keratin -acidic in nature) ââ¬â serves as a durable overcoat of the body DESQUAMATION ââ¬â natural process of breaking apart of dead skin cells; for every 35-35 days, an individual will have a new epidermal skin Epidermal Appendages a) Eccrine glands ââ¬â sweat-producing gland ââ¬â thermoregulation ââ¬â can be found throughout the skin but with some exemptions ââ¬â numerous on palms, soles, axilla and forehead ââ¬â not found in: Vermillion border(junction of the pink area of lips surrounding skin) Lips, Ears, Nailbeds, Glans penis,Labia minora b) Apocrine glands ââ¬â function is not clearly known ââ¬â abundant in the axilla, breast, areola, anoogenital area, ear canal, and eyelids c) Sebaceous glands release of sebum (has lubricating and bactericidal effect) ââ¬â can be found all throughout the skin except on the palms, soles, and axilla d) Hair ââ¬â a non-viable protein end-product ââ¬â found in all skin surfaces except palms and soles e) Nails â⬠â horny scales of the epidermis 2) DERMIS ââ¬â a dense-layer of tissue beneath the epidermis ââ¬â gives the skin most of its substances and structures ââ¬â 1ââ¬â4 mm (thickest dermis is found in the back) ââ¬â has characteristics for: ->WOUND HEALING: because it contains fibroblast, macrophages, mast cells, lymphocytes -> MAINTENANCE OF EQUILIBRIUM: because it contains lymphatic, vascular, and nerve supply Layers of the Dermis a) Papillary Layer -upper dermal region with finger-like projections -contains: >papillary loops (provide nutrients to the epidermis) >Pain receptors b) Reticular Layer ââ¬â deepest skin layer ââ¬â contains BV, sweat glands, and deep pressure receptor (Pacinian corpuscles) ââ¬â abundant phagocytes are located ââ¬â as one ages, depleted collagen and elastic fibers -collagen for TOUGHNESS OF EPIDERMIS ââ¬â Elastic fiber for SKIN ELASTICITY 3) SUBCUTANEOUS FAT/ HYPODERMIS ââ¬â AKA adipose layer ââ¬â Functions: * S ource of energy * Hormone metabolism * Insulation from extreme hot and cold Cushion to trauma -specialized layer of connective tissue -absent in the: eyelids, scrotum, areola, tibia ASSESSMENT OF CLIENTS WITH INTEGUMENTARY DISORDERS A) SUBECTIVE DATA HISTORY TAKING ââ¬â assess for pre-existing factors 1) Chief complaint (if Derma conditions already exists) ââ¬â Assessment on itchiness, dryness, rashes, lesions, ecchymosis, lumps & mass ââ¬â Changes in skin, hair, and nails ââ¬â Onset of the condition ââ¬â Other accompanying symptoms with known cause (pain, fever, swelling, redness) ââ¬â Alleviating factor such as cold weather 2) Past Health History ââ¬â Hx of previous derma disease Previous trauma and symptoms; interventions ââ¬â Other systemic illnesses relevant to the skin such as immunologic, endocrine, vascular, renal, or hepatic conditions ââ¬â Age of onset ââ¬â Particular season/month of the year ââ¬â Treatment done ââ¬â Immuniza tion status ââ¬â Recent exposure to insects/childhood diseases 3) Known exposure to communicable disease (school, neighbourhood) 4) Travel to foreign countries/places ââ¬â possible environmental factors that the patient is exposed to Ex. Poison ivy 5) Medications currently being taken/ has recently finished ââ¬â Photosensitivity drugs- causes sunburn-like rashes in areas of exposureEx. Phenothiazides Tetracyclines Diuretics Sulfonamides ââ¬â topical preparations containing derivatives of ingredients which are known as sensitizing Ex. Neomycin Ethylaminobenzoate/ benzocaine Diphenhydramine HCl 6) Occupation and recreational activities ââ¬â exposure to irritants and chemicals either in the home or environment Ex. Prolonged exposure to the sun Unusual cold exposure 7) Allergies ââ¬â medications or foods ââ¬â assess if after ingestion, complains of itchiness, burning, or eruption of rashes ââ¬â substances that cause local, skin irritations/lesions with di rect contact Ex. Textile, Metal (Ni), Wool Allergic reaction could trigger skin discoloration & eruption of rashes, skin irritation *oral corticosteroids which may cause Acne breakouts, Thinning of the skin, Stretch marks, and Other systemic manifestations if this is used at high dose or routinely 8) Family health history ââ¬â Family lifestyle and living environment ââ¬â Genetically transmitted Derma conditions such as: * Alopecia * Psoriasis * Atopic dermatitis ââ¬â Systemic diseases with derma manifestations such as: * DM * LE * Blood dyscrasia 9) Habits (the patient as an individual) ââ¬â hygiene practices ââ¬â products/cosmetics use ââ¬â changes in clothing or bedding diet (sufficient intake of nutrients like H2O, vitamins and dietary fats) -Exercise -Sleep patterns which affect circulation, nourishment, and repair of the skin B) OBECTIVE DATA ââ¬â appraise the entire skin surface on head-to-toe including oral mucosa ââ¬â appraise thoroughly â⬠â use INSPECTION, PALPATION, OLFACTION PHYSICAL APPRAISAL 1) Color ââ¬â areas of irregular pigmentation (hypo/hyperpigmentation) ââ¬â Paleness/pallor ââ¬â Cyanosis ââ¬â Jaundice ââ¬â Assess sclera for a very dark person 2) Texture ââ¬â palpation (stroke the patient with the fingertips lightly to assess texture) ââ¬â NORMAL: Smooth, Soft, Resilient, No areas of lumps, No unusual hickening/thinning 3) Moisture ââ¬â hydration level of the skin for both wetness(Fluidity) and oiliness(Sebum) ââ¬â assess INTERTRIGINOUS AREAS (parts which have skin-to-skin contact like axilla & groin) ââ¬â NORMAL: Well-hydrated but not excessively moist 4) Temperature ââ¬â use the dorsum of the hand ââ¬â compare hypothermia/hyperthermia with the area on the opposite side ââ¬â NORMAL: uniformly warm 5) Turgor ââ¬â skinââ¬â¢s elasticity ââ¬â the time it takes for the skin and underlying tissue to return to its original contour after being pinch ed up (usually on the abdominal area) -older individuals: v skin turgor ââ¬â NORMAL: 3 sec ) Odor ââ¬â NORMAL: free from pungent odors ââ¬â usually present in the axilla, skin folds, open wounds related to presence of bacteria in the skin 7) Presence and characteristics of Lesions MANIFESTATIONS OF SKIN DISORDERS 1) LESIONS PRIMARY LESIONSââ¬â first lesions to appear on the skin and has a recognizable structure in response to some changes in the external and internal environment A. Erythema ââ¬â redness and inflammation (skin/mucous membrane) ââ¬â result of dilation and congestion of superficial capillaries ââ¬â Ex. Nervous blush, Sunburn B. Macule ââ¬â unelevated change in color ââ¬â flat ââ¬â 1mm-1cm ââ¬â circumscribed Ex. Freckles, measles, petechiae, flat moles PATCHES ââ¬â larger than 1 cm and may have irregular shape ââ¬â Portwine birthmarks, Vitiligo (White Patches) C. Papule ââ¬â small, circumscribed, solid elevation, 1 mm-1cm ââ¬â Ex. Warts, Acne, Pimple, Elevated moles D. Vesicle ââ¬â circumscribed round or oval ââ¬â thin translucent mass ââ¬â filled with serous fluid or blood ââ¬â 1mm-1cm ââ¬â Ex. Herpes simplex, Early chicken pox, Small burn blisters E. Bullae ââ¬â Large blisters (larger than vesicle) ââ¬â Ex. 2nd degree burn, Herpes simplex (Big) F. Pustule ââ¬â Vesicle or bullae filled with pus ââ¬â Ex. Acne vulgaris, Impetigo G. Nodule elevated solid hard mass that extends deeper into the dermis than a papule ââ¬â have a circumscribed border ââ¬â 2cm ââ¬â irregular border ââ¬â Ex. Malignant melanoma, Hemangioma I. Wheal ââ¬â reddened localize collection of edema fluid ââ¬â irregular in shape ââ¬â varies in size ââ¬â Ex. Hives, Mosquito bites J. Plaque ââ¬â raised lesion formed from merging of papules and nodules ââ¬â >1cm ââ¬â Ex. Psoriasis, Rubeolla K. Cyst ââ¬â elevated, encapsulated, fluid-filled mass arising from SC tissues ââ¬â 1cm or larger ââ¬â Ex. Sebaceous cyst, Epidermoid cyst L. Comedo ââ¬â accumulation of sebum and keratin within a hair follicle ââ¬â occurs due to clogging 2 types: Open comedo (black head) Closed comedo (white head) M. Telangiectasia ââ¬â permanent dilation of capillaries in the skin SECONDARY LESIONS ââ¬â develop/occur if changes occur in the primary lesions ââ¬â relate to clientââ¬â¢s health status, environment, & status of the epidermal layer ââ¬â possible causes: Scratching, Rubbing, Medications, Natural disease progression, Process of involution or Healing A. Crust (SCAB) ââ¬â a rough dry area formed by the coagulation of drying plasma or exudates ââ¬â could be a dried sebum, serum, blood, or pus on skin surface producing a temporary barrier to the environment ââ¬â Ex. Impetigo, Eczema, Healing of burns/LesionsB. Scales ââ¬â dried fragments of sloughed epidermal cells ââ¬â irregular in shape an d size ââ¬â colors vary from White, Tan, Yellow, to Silver -Ex. Dandruff, Dry skin, Psoriasis C. Ulcer ââ¬â depressed lesion in which entire epidermis and upper layer of dermis are lost ââ¬â could be due to trauma or tissue destruction ââ¬â irregular in shape and exudative ââ¬â Ex. Stasis ulcer D. Fissure ââ¬â deep linear split through epidermis into dermis ââ¬â Ex. Tinea pedis E. Scar ââ¬â Mark left on skin after healing F. Hyperkeratotic Plaque (Callus/ ââ¬Å"Kalyoâ⬠) ââ¬â excessive thickness of the epidermal layer caused by chronic friction or pressure ) PRURITUS ââ¬â unpleasant skin sensation that provoke the desire to scratch ââ¬â Skin, Certain MM, Eyes, Perineum, Nostril, External ear canal ââ¬â r/t mechanical stimulation of chemical mediator ââ¬â r/t systemic disease ââ¬â Chicken pox, Severe liver disease, DM , Uremia 3) PAIN ââ¬â stimulation of Nociceptor 4) SWELLING ââ¬â due to release of chemical mediato rs 5) REDNESS ââ¬â due to hyperemia 6) SYSTEMIC ss ââ¬â fever (release of pseudothermoregulators), leucocytosis (^WBC) DIAGNOSTIC TESTS 1) LAB TEST a. Tzanck smear ââ¬â Named after Arnault Tzanck ââ¬â Aka Chickenpox test/ Herpes skin test A microscopic assessment of fluid and cells from vesicles or bullae ââ¬â Top of vesicle is cut with the use of scalpel then a smear is taken from the base of vesicle using the scalpel ââ¬â Differentiates vesicular disorders ââ¬â may identify a virus (-) reaction ââ¬â vesicle from burns (+) H. Simplex or Acantholytic cells; varicella virus; multinucleated giant cells b. KOH test ââ¬â done if the causative agent is suspected to be a fungus ââ¬â the specimen (smear) is treated with 10-20% of KOH before microscopic study Normal or (-) result shows no Fungi (No dermatophytes/yeast) c. Culture ââ¬â done to identify the specific microorganisms to determine specific antibiotic treatment 2) SKIN BIOPSY ââ¬â ex . Dermal punch biopsy ââ¬â a sample of skin tissue is removed, processed, & examined under a microscope ââ¬â 4 types: 1. Excision Biopsy ââ¬â entire skin area is cut 2. Punch Biopsy ââ¬â a small cylinder of skin is removed 3. Shave biopsy ââ¬â outermost part of a lesion is shaved off with a scalpel 4. Aspiration biopsy ââ¬â indicated for fluid-filled lesion 3) WOODââ¬â¢S LIGHT EXAMINATION ââ¬â Skin is viewed under UV light through a special glass (Woodââ¬â¢s glass ) to identify superficial infections of the skin ââ¬â Place the patient in a dark room before examination 4) SKIN TESTING used to identify substances causing the allergy ââ¬â 3 ways: 1. Scratch test ââ¬â aka Puncture/Prick test ââ¬â Pricking the skin 2. Intradermal test ââ¬â Similar to Tuberculin test *DURATION OF TEST FOR BOTH SCRATCH AND INTRADERMAL TEST IS 5-10 MINS OR 15 MINS 3. Patch Test ââ¬â the allergen is placed on a patch then placed on the skin ââ¬â D uration: 48 hours (2 days) 4 TYPES OF HYPERSENSITIVITY REACTIONS TYPE I (ANAPHYLACTIC/IMMEDIATE HYPERSENSITIVITY) ââ¬â may involve the skin (disorders such as urticarial or eczema), eyes (conjunctivitis), nasopharynx (rhinorrhea/ rhinitis), bronchopulmonary tissues (asthma), GIT (gastroenteritits) rxn may range from minor inconveniences to death (r/t bronchopulmonary constriction-vO2) ââ¬â takes 15 to 30 minutes from the time of exposure ââ¬â delayed onset of type I = 10 to 12 hours ââ¬â mediated by Ig E ââ¬â primary cell components : Mast cell and Basophil TYPE II (CYTOTOXIC HYPERSENSITIVITY) ââ¬â may affect variety of organs and tissues ââ¬â reaction time: minutes to hour after exposure ââ¬â mediated by Ig G and Ig M ââ¬â ex. Drug-induced haemolytic anemia Granulocytopenia Thrombocytopenia TYPE III (IMMUNE-COMPLEX HYPERSENSITIVITY) ââ¬â the type of reaction is considered as GENERAL ââ¬â ex. Serum sickness may involve individual organ suc h as the skin (SLE and Arthus reaction), kidneys, lungs, blood vessels and joints ââ¬â reaction time: 3 to 10 hours ââ¬â mediated by soluble immune complexes particularly Ig G TYPE IV (CELL-MEDIATED/ DELAYED TYPE) ââ¬â ex. Mantoux test (PTB test), PPV test, tuberculin test ââ¬â 48 to 72 hours (2 to 3 days) II. SKIN DISORDERS A. DERMATITIS/ECZEMA ââ¬â Inflammation of the epidermal layer ââ¬â Rashes are characterized by itching and redness Types: I. Contact Dermatitis ââ¬â Inflammatory reaction either caused by Allergens or Irritants ââ¬â utilize PATCH TEST to identify the cause ââ¬â 2 TYPES BASED ON ETIOLOGY: Irritant Contact Dermatitis ââ¬â Most common ââ¬â There is no allergic reaction but there is inflammation that occurs because of either a PHYSICAL or CHEMICAL IRRITANTS ââ¬â Manifestations: > Lesions appear sooner > Appear on exposed areas ââ¬â Ex. Mechanical (glass fiber, wool) Chemical (cleaning compounds, perfume) Physical ( clothing, stuff toy) * Allergic Contact Dermatitis ââ¬â A Delayed type (TYPE 4) of hypersensitivity rxn from contact with allergens ââ¬â Immune-mediated response by previously sensitized Lymphocytes to specific antigen (allergen) ââ¬â Ex. Drugs (Penicillin, Sulfonylamides) Metals (Nickel)Spandex Rubber Bra ââ¬â MANAGEMENT OF CONTACT DERMATITIS: 1. Topical corticosteroids ââ¬â use BID for 2 weeks ââ¬â causes thinning of the skin 2. Oral Antibiotics ââ¬â if lesions develop into 2ââ¬â¢ lesion or if 2ââ¬â¢ infection sets in 3. Oral Antihistamines, Topical Antipruritic agents, Colloid oatmeal baths ââ¬â to control itching ââ¬â NURSING INTERVENTIONS 1. Avoiding irritants and sensitizing substances 2. Wear appropriate clothing 3. Wear gloves 4. Use mild soap products II. Atopic Dermatitis ââ¬â Genetically-based skin disorder that is both chronic and relapsing ( bec. it involves type 1 rxn) ââ¬â Strongly linked with asthma and hay fever Most common in children Immunologic irregularity (Cytokines and inflammatory mediators) v Vasoconstriction of Superficial vessel v vProtective barrier function of the skin ââ¬â FOCUS OF NURSING CARE in managing atopic dermatitis is geared toward addressing the social and emotional disturbances and sleep pattern disturbance ââ¬â EXACERBATING FACTORS: * Change in temperature COLD ââ¬â Dry skin HOT ââ¬â Vasodilation > Inflammation> Itching & Redness * Other irritants * Physiologic Stress ââ¬â direct stress to the area * Exercise ââ¬â loss of H2O > Dryness ââ¬â MANAGEMENT OF ATOPIC DERMATITIS (SYMPTOMATIC ONLY; NO CURE): 1. Hydrating the Skin Cornerstone of management ââ¬â Apply moisturizer 3-4x a day to reestablish hydration of the S. corneum 2. Corticosteroid a. Systemic b. Topical * ââ¬â Educate on: * Proper Application (Only apply to area being affected) * Duration of Use (BID X 2 weeks) * Side effects: Thinning of the skin Jeopardizing the immune sys tem ââ¬â Application of WET WRAPPINGS ââ¬â To enhance absorption and ââ¬â Helps decrease pruritus 3. Protopic ointment (tacrolimus); pimecrolimus (Elidel) ââ¬â IMMUNOMODULATORS (block T cell activation) ââ¬â Indication: Moderate to Severe atopic dermatitis ââ¬â Side effects: Itching, Burning, Irritation for few days Avoid sunlight/ artificial sunlight for prolonged periods (photosensitivity rxn) 4. Antihistamines ââ¬â for itchiness 5. Antibiotic ââ¬â if secondary infection sets in III. Seborrheic Dermatitis ââ¬â Eczematous eruptions typically occur in hairy areas ââ¬â Sebaceous gland in which there is an increase amount and alteration in the quality of sebum/serum ââ¬â Usually occurs on Scalp, Eyebrow, Central chest, Face, Genital skin fold ââ¬â PREDISPOSING FACTORS: 1. Family history of skin diseases 2. Winter months ââ¬â symptoms usually worsen (drying effect) 3. Over growth of yeast organisms ( secondary to fungal infection) Inf lammatory changes Around sebaceous glands and hair follicles) v Red, greasy scales (Characteristic symptom > scale) ââ¬â MANAGEMENT: 1. Mild ââ¬â Tar, Selenium, Zinc, or Ketoconazole shampoo preparations > Have antibacterial effect on the normal flora found at the hair follicles 2. Chronic ââ¬â Topical corticosteroids > To flatten thick, scaly plaques (SCALP) ââ¬â Low potency topical steroids/ topical antifungal agents (FACIAL) IV. Stasis Dermatitis ââ¬â Eczematous eruption common in lower extremities occurring in older persons ââ¬â PREDISPOSING FACTORS: 1. Varicosities (venous insufficiency) 2. Poor circulation vVenous return (From legs) Substances remain in the tissues v Irritation, brawny colored skin associated with edema v Itching (May or May not occur) v Scratches v Break in the epidermis (Stasis ulcer) v 2ââ¬â¢ infection ââ¬â MANAGEMENT (prevention of predisposing factors): 1. Treatment of peripheral vascular conditions 2. Prevent constriction o f the circulation 3. Treat lower extremity edema * Elevate lower extremity (CI: Cardio/Pulmonary problems) * Compression stockings * Unna boots (bandage application on the lower extremities) 4. Topical corticosteroids ââ¬â To address itching and scratches V. Lichen Simplex Chronicus Usually occurs in the Wrist, Ankles, and Back of the skull (Easily reached) ââ¬â A localized, well-circumscribed eczematous eruption caused by repeated rubbing and scratching ââ¬â Aka ITCH-SCRATCH CYCLE ââ¬â PREDISPOSING FACTOR: Stress where scratching becomes habitual and worse at NIGHT ââ¬â elephant skin B. ACNE ââ¬â An inflammatory disease of sebaceous follicle marked with comedone, macules, and papules TYPES: I. Acne Vulgaris ââ¬â Occurs on the Face, Neck, Upper chest, & Buttocks ââ¬â Common among adolescents (80%) & may occur in adults ââ¬â PREDISPOSING FACTORS: 1. Stress (activation of hormone production) 2.Heredity (familial tendency of androgen imbalance) 3. En docrine (hormonal imbalances) 4. Diet (free fatty acids) Puberty [^Androgen] (Sebaceous glands undergo enlargement) v Produce sebum v Binds with debris (Keratin, Bacteria, Cell fragments) v Plug hair follicle v Comedo (open/close) v Inflammation (Papules, Pustules, Nodules, Cyst) ââ¬â MANAGEMENT: 1. Topical Benzoyl Peroxide Retinoids Retinoid-like drugs such as Adapaline, Tretinoids, Azeleic acid Antibiotics such as Clindamycin, Erythromycin, & Sulfa-based agents *Donââ¬â¢t self-medicate 2. Systemic Antibiotic ââ¬â indicated for inflammatory acne lesionsIsotretinoin (Accutane) ââ¬â vitamin A analog ââ¬â Side effx: Dry lips & conjunctiva, and skin hairloss, muscle ache, photosensitivity, mood disturbance ââ¬â prevents pregnancy, ^Risk of birth defects 3. Intralesional therapy ââ¬â NURSING CARE: 1. Keep hands and hair away from face 2. Avoid exposure to oil and greases a. Eat well-balanced diet b. Wash face 2 or 3X a day with mild cleanser c. Use only water- based cosmetics II. Acne Rosacea ââ¬â Characterized as a RED facial rash which mostly affect 30-60 y/o ââ¬â It has both vascular and acne component ââ¬â Chronic, localized eruption with vascular and acne characteristic ââ¬â PREDISPOSITION: . Affects women more than men ( S/S is more severe in female) 2. Fair complexion individuals are more inclined 3. Familial predisposition ââ¬â CHARACTERISTICS: 1. Red papules (sometimes pustules) ââ¬â usually located on nose, forehead, cheeks, chin, rarely involves trunk and upper limbs 2. Blushing or flushing (ââ¬Å"Red faceâ⬠) ââ¬â telangiectasia 3. Dry and flaky facial skin 4. Enlarged unshapely nose with sebaceous hyperplasia (the pores will become prominent) and rhinophyma (fibrous thickening) 5. Eye symptoms ââ¬â eyelid inflammation/ conjunctivitis *Appearance of Lesion: DOME-SHAPED (no black/white heads; no deep cyst/lumps) MANAGEMENTS: 1. Antibiotics (Tetracycline) including doxycycline and minocycline ââ¬â Duration : 6-12 weeks ââ¬â to reduce inflammation (redness, papules, pustules and eye symptoms) 2. Topical: metronidazole/ Azeleic acid cream or lotion ââ¬â applied 2x a day directly to the affected area 3. Nutraceuticals / clonidine ââ¬â ? -2 recepto agonists > reduce vasodilation > vflushing/redness in the area 4. Anti-inflammatory drugs (diclofenac) ââ¬â to reduce discomfort and redness on the affected skin ââ¬â NURSING INTERVENTIONS: 1. Avoid oil-based facial creams 2. Use water-based make-up 3. Never apply a topical steroid (to the rosacea) . Protect yourself from the sun. (Use light oil-free facial sunscreens) 5. Keep your face cool: minimize your exposure to hot or spicy foods, alcohol, hot showers and baths and warm rooms. C. PSORIASIS ââ¬â A genetically determined, chronic, epidermal, proliferative, not curable dse *control fast cellular proliferation ââ¬â aka PAPULO-SQUAMOUS LESION > scaly in characteristic ââ¬â a chronic, recurren t, erythematous inflammatory disorder involving keratin synthesis ââ¬â History: 1841 ââ¬â Viennese dermatologist known as Ferdinand von Hebra coined the term psoriasis from Greek word ââ¬Å"psoraâ⬠which means ââ¬Å"to itchâ⬠ââ¬â INCIDENCE:Men and women are equally affected Occurs in all ages but is less common among children and elderly Commence at early adulthood (18-24) Increased incidence among Whites Decreased among Japanese, American Indians, West African origin ââ¬â exacerbated by several factors ââ¬â manifestations usually appear between 15 and 35 years old ââ¬â CAUSE: unknown But with high link to alteration in cyclic nucleotide and possible immunologic abnormality ââ¬â CONTRIBUTORY FACTORS: 1. Immune-mediated condition ââ¬â The condition is believed to be caused by faulty signals in the bodyââ¬â¢s immune system ââ¬â the body tends to overreact and accelerate the growth of skin cells the T cells abnormally trigger inflamma tion in the skin (accelerates skin cells to grow faster and to pile up on the outer surface of the skin> the skin does not desquamate but piles up) *Normally, skin cells mature and sheds off every 28-30 days Cytokines (Lymphokines) v ^Platelet, Neutrophils, Basophils v Release of Histamine v Inflammation 2. Genetic ââ¬â It has been appreciated by physicians that it occurs in families ââ¬â high rates among monozygotic twins ââ¬â known to be linked with inherited genes or other immune-mediated conditions ââ¬â when both parents have psoriasis, a child may have 40% probability of developing the disease
Tuesday, July 30, 2019
Computerization of Public Sector Essay
Introduction In the midst of the Global Financial Crisis we found the Mediterranean states, Greece, Portugal, Spain, Italy, being troubled by serious fiscal issues, great deficit on their balance sheets, characterized by low competitiveness and enormous public debt. Over the last year of the GFC the policies that had been followed for those countries are mainly focused around the creation of fiscal surpass by using horizontal and cross cutting methods. The results of those tactics after almost 4 years of austerity measures are far from favorable. One reason for that is that the IMF and EU were unable to look deep into the problem. Their primary target was to found a swift and superficial solution, mainly because of the pressure from the markets and political factors. On this research we will focus our interest deeper into the problem and attempt reaching the core of it. One very important aspect of the crisis that the mentioned organizations have not taken into account is the efficiency of the pu blic sector on the problematic countries. If the public sector lacks on efficiency then the results would be phenomenon like corruption, unorganized departments, tax evasion and absence of communication between agencies. One great factor that determines the efficiency of a state is the computerization of its public sector. And that is what our research will be focused on. Main literature used on the research To reach the needed results we have to find the proper literature, we have to use that as a base for our research and to help us on extracting our conclusions. We need to analyze the structure of the Public Sector Management on those countries and to learn how important the role of computerization is on an efficient government. That is exactly what (Dunleavy, 2006) tried to show us. How vital computerization is for the public administrator and its role on key factors like taxation, decentralization, bureaucracy and public corruption. Another aspect we have to use on our literature research is the quality on public sector. What is its relation with a computerized state how is affected by that. Quality is an important element of a successful computerization process, their bonds are strong, quality is considered fundamental for a public sector to become more efficient and to increase its performance (Pollitt and Bouckaert, 1995). Performance is another important factor that has a crucial role on a healthy public sector. It helps to increase its effectiveness, that leads to a more transparent and innovative system (Bruijn, 2006). After we successfully incorporate those components into the public administration we would be able to observe the impact of computerization on the economic stability of a country (Snellen et al., 1989). Advantages of a computerized public sector If we look into the literature we will see that the Mediterranean states that are deadlocked, actually apart from their deficit they have one more common thing, their corruption ratings (Transparency international, 2011; OECD, 2011). Therefore we observe a great proportion of tax evasion, and restrict bureaucracy (World Bank, 2012) and low competitiveness against other states (Klaus Schwab, 2012). The advantage of a computerized public sector, apart from the efficiency (Pollitt and Bouckaert, 1995), is the addition on effectiveness too (Willcocks and Harrow, 1992). Moreover we survey a great improvement on transparency (OECD, 2011) and on accessibility of the services as well as on productivity (Hayes, 1977). All the previews factors are on a sequence, first of all the immediate reaction of a computerized sector is to improve its quality (Pollitt and Bouckaert, 1995), that is conceivable through an ââ¬Å"adaptionâ⬠of new public management standards (Hood, 1998), next step is the improvement of performance (Margetts, 1999);(Dunleavy, 2006). Moreover after we succeed on adapting quality and performance into the public sector, the effectiveness (GAO,1991) and the efficiency occurs (Willcocks and Harrow, 1992). As a result an economic stability will commence (HMSO, 1983);(Klein, 1988). All the above have shown that will result on a better tax administrator (Snellen et al., 1989);(Naur, 1974) and have as an outcome the better taxation (Margetts, 1999). Still the most important thing that gets neutralized is the political interception (Herring, 1967). Arguments The main arguments about computerization of the public sector directs from the employees. A factor is the poverty of knowledge about the use of new technologies and their lack of interest on learning them. Another important factor is the political and union interests (Transparency international, 2011). On the above mentioned countries, unions and political parties have a ââ¬Å"clientâ⬠relationship. This suggests a major concern for an improvement effort of public sectorââ¬â¢s administration. Managers lack the will to adapt innovative ideas into their departments. And the corrupted bureaucratic stateââ¬â¢s roots are so deep that ought great effort to overcome those obstacles. (Jorma, 1988). Other arguments come from the cost of a computerization update (Dunleavy, 2006). Furthermore, arguments about the part that computerization had on the instability of the Mediterranean States are expressed from organizations like IMF, on their monthly reports they do not take into account the individuality and the complexity of the public sector on those countries (IMF, 2012). Methodology For the research to be conducted we have to use a combination of quantitative, by using the ââ¬Å"Nâ⬠data sets and qualitative methods by the use of enquiries. Because of the nature of the research some factors cannot be properly valued by quantitative methods (Weber et al., 1946) And some information are results from qualitative research (Ragin and Amoroso, 2011);(Ragin, 1987). Also we have to take into account the external factors that affect the computerization process. Thus the research will not be ââ¬Å"immuneâ⬠to external elements. Conclusion To conclude we have reached a point on introducing austerity measures on the Mediterranean Countries, where we should be very careful of our actions. Especially when the EU is on a dense position because of political rivalries, unwillingness and antagonism amongst union states. And portray a lack of focus to the core of the issue. If we do not act more carefully and if we do not try to find the right questions for the problem the situation will become irreversible. The question should not be how to stop the deficit, instead should be how those problematic countries can improve their public sector? And more specifically at what extend the computerization of public sector in Mediterranean Nations ââ¬Å"affectâ⬠their economic stability? It should be appropriate to close with a quote from Simon H. A ââ¬Å"is the resistance it evokes from those who refuse to see in it anything more than an enlarged desk calculator. Not since the Darwinian controversy of the past century we have seen such a passionate defense of the uniqueness of man [sic] against claims of kinship by systems that donââ¬â¢t belong to his species.â⬠(Simon H.A, 1973: 503) References BRUIJN, J. A. D. 2006. Managing performance in the public sector, New York, NY, Routledge. DUNLEAVY, P. 2006. Digital era governance : IT corporations, the state, and E-government, Oxford, Oxford University Press. GAO. 1991a. SSA: Computers Long Rans Vision Needed to Guide future systems modernization efforts, GAO/IMTEC ââ¬â P1- 44, Washington DC. HAYES, F. O. R. 1977. Productivity in local government, Lexington, Mass., Lexington Books. HERRING, P. 1967. Public administration and the public interest, New York,, Russell & Russell. HMSO. 1983a. Efficiency and Effectiveness in the Civil Service, HMSO, London HOOD, C. 1998. The art of the state : culture, rhetoric, and public management, Oxford ; New York, Clarendon Press. IMF. DECEMBER 2011. IMF Country Report No. 11/351, Greece: Fifth Review Under the Stand-By Arrangement, Rephasing and Request for Waivers of Nonobservance of Performance Criteria; Press Release on the Executive Board Discussion; and Statement by the Executive Director for Greece., Washington, D.C. IMF. JULY 2012. IMF Country Report No. 12/168, Italy: Selected Issues, Washington, D.C. IMF. JUNE 2012. IMF Country Report No. 12/137, Spain: Financial Stability Assessment, Washington, D.C. KLAUS SCHWAB. 2012. WEF: Global Competitiveness 2012-2013, Geneva, World Economic Forum. KLEIN, R & CARTER, N. 1988. Performance Measurement a review of concepts and issues. Discussion Paper No 18, Public Finance Foundation KUOPUS, JORMA. 1988. Hallinnon lainalaisuus ja automatisoitu verohalliuto, Jyuaskyla, Finnish Lawyers Publishing Company MARGETTS, H. 1999. Information technology in government : Britain and America, London ; New York, Routledge. NAUR, P. 1974. Concise survey of computer methods, New York, Petrocelli Books. OECD. 2011. OECD: Working on Bribery, Annual Report 2011 POLLITT, C. & BOUCKAERT, G. 1995. Quality improvement in European public services : concepts, cases and commentary, London ; Thousand Oaks, Calif., Sage. RAGIN, C. C. & AMOROSO, L. M. 2011. Constructing social research : the unity and diversity of method, Los Angeles, SAGE Publications. RAGIN, C. C. 1987. The comparative method : moving beyond qualitative and quantitative strategies, Berkeley, University of California Press. SIMON H,A . 1973. Applying Information technology to organization Design, Public Administration Review, 33: 268-78 SNELLEN, I. T. M., DONK, W. B. H. J. V. D. & BAQUIAST, J.-P. 1989. Expert systems in public administration : evolving practices and norms, Amsterdam ; New York, Elsevier Science Publishers. TRANSPARENCY INTERNATIONAL. 2011. Corruption Perception Index 2011 WEBER, M., GERTH, H. H. & MILLS, C. W. 1946. From Max Weber: Essays in sociology, New York,, Oxford university press. WILLCOCKS, L. & HARROW, J. 1992. Rediscovering public services management, Lond on, McGraw-Hill. WORLD BANK. 2008. WORLD BANK: Doing Business 2012, http://www.doingbusiness.org/rankings, last checked 29/10/2012
Monday, July 29, 2019
Papers' Analysis Assignment Example | Topics and Well Written Essays - 1000 words
Papers' Analysis - Assignment Example Economies of scale are the cost advantage that comes from a productââ¬â¢s increased output. They arise due to an inverse relation between fixed costs per-unit and quantity produced. The more cars produced in this case, the lower the fixed cost per unit, as the cost is shared among a larger quantity of cars. They may also reduce unit variable costs due to synergies and operational efficiencies. Economies of scale are in two major types; external that arises from industry size and other extraneous factors and internal that arises from inside the firm (Motavalli 1). While benefits of this concept are obvious, I think they also impact on such areas as finance. For instance, a company like Ford Group would have a lower capital cost compared to smaller firms due to their ability to borrow at lower rates of interest. However, I believe that, even with this advantage, I think there is a finite upper limit to how Ford Group can grow in achieving economies of scale. When the hybrid car prod uction reaches a specific number, it will be more expensive to manage due to bureaucracy, complexity, and operational inefficiency. The results from Ford Group are also hard to ignore. For instance, the model T line of production and task specialization were integrated with standardization, as can be seen in their hybrid plant. The specialization that will go with the hybrid car production will lead to productivity increase. The coupling of specialization and standardization will ensure that the model parts will be of universal size at all times, which greatly reduces costs of restoration. However, it can also be argued that the reduction of costs by specialization and increase in productivity is offset by huge human costs. While there is little evidence of how economies of scale impact organizations like Ford in the long run, the idea has become a hallmark of Ford Group and other similar companies because it can be used all manufacturing functions; for example, marketing, research and development, distribution, and sales force utilization (Motavalli 1). Analysis # 2 The Texas drought of 2011 is bound to have ripple effects across the globe, especially with regards to agricultural products. Texas produces approximately 55% of cotton crop in the US, supplying the same to mills around the world. Because of the droughtââ¬â¢s effect on cotton, the prices are on the up. The drought has also affected beef prices with ranchers being forced to sell off their cattle due to dramatic reductions in water and animal feed. The selling of, off valuable breeding stock is expected to see a long-term increase in the price of beef. It is also expected that there will be a 50% jump in the prices of wheat in winter because of the drought, especially since Texas accounts for 20% of wheat production (Hylton 1). The FAO price index for food raised to 6% in mid-2012, which was attributed to the unfavorable conditions of weather, particularly the drought currently ravaging parts of the United States, which have driven the cost of agricultural products up. However, what is happening now is more a climatic transition than a random weather event. The consequences have been predicted to be especially dire for the poor population in the world (Hylton 2). However, in my opinion, the prices of beef, wheat, and cotton will be affected by other factors, rather than by drought alone. The use of biofuels
Sunday, July 28, 2019
Mathematics Learning Disability Speech or Presentation
Mathematics Learning Disability - Speech or Presentation Example The facts comprise of basic computation such as (4+5=9 or 6x4=24), which students require putting out in memory in their earliest levels of elementary school. It is critical to remember these ideas since it permits a student to approach the most advanced thinking of mathematics without bogging down easy calculations. Secondly, many students have computation weaknesses. Various students, despite a good understanding of concepts of mathematics, are not consistence at computing. They always make errors since they misread the signs and symbols or carry most numbers incorrectly, or might not write numerals in the correct column or clearly enough. The same learners always struggle, specifically in primary school, in which basic computation and correct answers are stressed. This makes them end up in the remedial lessons, even if they may be having top levels of ability of the greater level of mathematical thinking. Furthermore, many learners have incomplete of getting the language of mathematics. These students might also face reading, speaking and writing difficulties. In mathematics, however, their problem of language is as a result of hard terminology, many of which they have never heard anywhere outside the mathematics classroom. These learners have difficulty in understanding verbal or written directions or explanations. They also find word problems particularly difficulty to translate. Lastly, a far commonly seen the problem and the most severe may be the inability of the individual be able to visualize the ideas of math effectively. Learners who have the problem cannot judge the size in dissimilar items. This disorder disadvantages students since it needs the learners to rely on rote memorization of both written and spoken description of mathematical concepts, which are taken by people for granted. Many math problems require learners to use high order mental cognition using skills of perception, for example, to find the shape that will result after rotating a complex.
Issue paper Essay Example | Topics and Well Written Essays - 750 words
Issue paper - Essay Example A manager, who is the person responsible for all the activities that are undertaken in any firm, organization or store, has to be innovative, good decision maker, and risk taker (Sakthivel 12). These characteristics are vital when solving problems that regard the team under the leadership of the manager. The manager get to supervise many different forms of services like retail stores, which offers the sale of different goods and services from people or business to the end consumer (Swapna 463). The significant challenges that are facing the retail stores have to be carefully addressed by the manager, by applying different managerial styles and skills. Various technical steps have to be followed if any effective achievements have to be made and be able to reach the expectations set out by the parent company. Like any other industry, the retail store is up against the challenging economy of the state. It has to fulfill the expectations of the parent company, which is the large national retailer that has taken over its ownership. Due to this change of control, the management regulations have also to be modified. The store was previously opened on Monday to Saturday from 8 am to 7 pm and Sunday from 12 noon to 6 pm, but now the hours have been extended and this has made the number of shifts to increase. The current 20 employees cannot manage to cover the shifts, which should be covered by 25 employees. The manager has to look for new employees that will be able to share the work and help the business to stand out. This is because 10 of the current employees are of average age and the other 10 are still new to the job. This will pose the cost to increase in order to pay the employees and moreover, they have to be trained and motivated in different ways. In addition, for the sales to be increased to the level that the parent company is expecting, the low end household, hardware and other convenient
Saturday, July 27, 2019
Commercial Law Essay Example | Topics and Well Written Essays - 2000 words
Commercial Law - Essay Example Before it could have been done, the wine cooling cabinet was damaged by vandals. The damage that was made after the contract of sale was beyond the control of Abraham as he could have done nothing to stop it. Therefore, the goods that formed subject matter of the contract perished before the risk passed to the buyer without any fault of either the seller or the buyer. S. 7 of Sale of Goods Act (SOGA), 19791 states that, ââ¬Å"Where there is an agreement to sell specific goods and subsequently the goods, without any fault on the part of the seller or buyer, perish before the risk passes to the buyer, the agreement is avoided.â⬠Also, by the application of S.18 (Rule 2)2, the cabinet was never put into a deliverable state and the property in it stayed with Abraham. Therefore, the agreement between Abraham and Brooke Ltd would be avoided and Abraham would have no liability to Brooke Ltd under this agreement. Against Charlie Abraham offered Charlie to sell three dozen bottles of 19 67 Chateau Trent red wine. Charlie accepted this offer right away as the price offered by Abraham was very good. At that time, Abraham did not know that the vandals who broke into his warehouse had stolen one dozen bottles of 1967 Chateau Trent red wine. ... But it would not be a fair result because only a part of goods, one dozen bottles out of three dozen, were stolen and the rest is still in a deliverable state. These bottles can be delivered to Charlie. The application of Sainsbury v Street5 can give us a fair and a flexible result. In this case, the parties made a contract before the harvest in which the seller agreed to sell his entire crop to the buyer. The actual crop yielded much less than the estimated due to bad weather. The seller, therefore, sold majority of his crop to another buyer and sold the rest to the original buyer for a much higher price. It was held that the seller was liable to pay damages to the buyer because a lower tonnage was not produced due to any fault of the seller and none of the parties had anticipated this. By the application of Sainsbury v Street, Abraham would have to deliver the rest of the bottles at the same price to Charlie if Charlie agrees to pay the same price for two dozen bottles because none of the parties had anticipated a theft. Abraham is not absolved of his performance of the contract. Against Dinsa On Wednesday, Dinsa, the owner of a local floristââ¬â¢s shop, purchased a dozen bottles of French champagne from Abraham and paid in cash. She made payment when Abraham told her that he had plenty of French Champagne in stock. The property in bottles had not passed to Dinsa at the time of payment because the bottles had not been appropriated for her under S.18 (Rule 2) of SOGA. Abraham promised to deliver the bottles to her. On Thursday, he duly loaded a dozen bottles of French champagne on to a lorry owned by a local independent carrier which means that he appropriated the goods for
Friday, July 26, 2019
Political Sex Scandals Case Study Example | Topics and Well Written Essays - 750 words
Political Sex Scandals - Case Study Example The House ethics committee is discussing charges the Democratic leadership should have confronted Massa sooner. Massa has presented explanations for his acquiescence from disease to intrigue Democrats because he opposed health care reform. After John Edwards told a national TV audience the only woman he ever loved was his wife, his mistress Rielle Hunter reported he called her to say he didn't really mean it. Hunter, 45, is experienced, but she was still shocked by GQ's pictures of her with no pants. She thought the photographer was only interested in her face. Collins' lessons are tongue-in-cheek. She says we have to know who our politicians bed with and never trust a guy who plays his marriage as the center piece of a campaign. Nevertheless, there is a deeper issue at hand - the moral behavior of our elected officials. She argues that we should be concerned when wayward public servants have our health care bill in hand. The best articulation of my position is this. The problem with American politics is that is it American politics. I am by no means a Marxist, but some of his ideas resonate in many political situations. He said the seed of any system's destruction is within its own self. That means although outside forces may topple walls interior forces leave them unattended. Maybe it is not representative government itself that is flawed however. Maybe, it just the way we have come to practice it in the United States. Who does it represent anyway Of the tens of millions of votes, how much does my vote really count -- one 50 millionth of a decisions. Did they ever square away that whole thing about campaign funding Does my opinion really matter when a multibillion dollar multinational corporation, like say Eli Lilly or Pfizer, places a briefcase "gift" full of greenbacks on a senator's desk I don't think so. Maybe, that is why marijuana possession is still punishable by death. What is that about, a nyway It is somehow okay to drink a flammable liquid like alcohol and let it slowly melt my brain into a seizing mass, but it is somehow wrong to smoke the leaves of a particular plant, get the munchies and go to sleep. Part of the problem actually lies with the media system itself. Instead of reporting noteworthy news, they sell out for the sensational story. Individual human beings may be smart, but as a group, people are herding animals to some extent. They like tabloid-style media scandals. They get TV ratings. They sell newspapers. Thus, that is what the media industry showcases. The more important issues go unnoticed by comparison. So what about this 300 pound gorilla staring at us Yes, our politicians are corrupt. What do we do about it Can we do anything meaningful It seems that evidence is scarce. Many of these notions are purely philosophical and perhaps not of any immediate use. Many analysts would argue we are on the brink of some cataclysmic change in politics. Based on history there is only one of two ways this can go. The first way is to find some means of rectifying the underlying problems with our system. The other is to hope it fixes itself and risk falling along the wayside with previous empires. It is a scary thought to think much of our stability is reliant upon Chinese economy. Our position is much like that of an expanding universe. If
Thursday, July 25, 2019
Client Assessment Report in Counseling Essay Example | Topics and Well Written Essays - 4250 words
Client Assessment Report in Counseling - Essay Example He was able to overcome his castration anxiety and identify with his father. However as he grew up, his father expected him to take over the family business. This did not feature in his ambitions since he had a strong desire to start his own IT firm which he went on to do. Conscientiousness as one of the five factors found in Goldbergââ¬â¢s trait theory of personality deals with the assessment of an individualââ¬â¢s degree of organization, persistence, and motivation in goal-directed behavior. Dickson being high in conscientiousness seemed to be what created the wedge in the relationship with his father and therefore it crumbled. It was because of this that Dickson found himself sinking into a depressed state. Dickson is the only son in a family of three of which he is the middle born child. According to Alfred Adler; the birth order was seen to influence the formation of the personality of an individual. Being a middle born the universal traits expected to feature in Dickson i ncluded independence on behavior. Alfred advanced that middle born less closely identify with the family because they receive less attention compared to the first or last born children. They, therefore, learn to look out for themselves and they tend to report having been less loved as a child. His older sister who is eight years his senior is a successful figure in her fatherââ¬â¢s family business. This heightened the pressure to join the family business even more and his refusal to do so was just seen to be much worse because as a boy, he is expected to have been socialized by his father to take up the role of the head of the family business. The age difference also put a strain on the sibling relationship between him and both his sister. This is because even his younger sister was ten years younger than he was. Age difference affects sibling relationships whereby, the contextual influences e.g. the environmental influences vary with different generations. Growing up, Dickson en joyed spending most of his time reading and studying in order to excel in his studies with the sole purpose of making his father proud. His introverted lifestyle allowed him to get very good grades all through his school life but this came at a high price. It denied him the chance of socially interacting with his peers who at the adolescent stage are key agents of socialization or the way in which orientation to the society normally occurs. Studies by Dunn and Plomin et al (1990) have shown that peer groups influence an individual into acceptance of new rules of behavior and provide lasting experiences for personality. Dickson, therefore, missed out on the opportunity to learn various ways of how interaction with others besides his father occurs. Dickson grew up looking up to his father who he saw as his role model. In Albert Banduraââ¬â¢s social learning theory; it was advanced that children learn through observational learning or what is alternatively referred to as modeling.
Wednesday, July 24, 2019
ITM 301 MOD 3 SLP Essay Example | Topics and Well Written Essays - 500 words
ITM 301 MOD 3 SLP - Essay Example In addition, tabs such as News, Analysis, Blogs, Videos, and Slideshows are also visible on the home page. Overall look and feel Its overall structure meets the standard of a professional website, and covers wide ranges of technological information. However, the exceeding priority given to advertisements undermines the genuineness of its fundamental objectives. It mainly targets people who are interested in technological innovations or people working in Technical field. It also provides useful information to business executives and other professional individuals who would purchase technical devices. Useful features of the site Obviously, the various tabs on the tope of the home page make the website more user-friendly. Similarly, the CIO provides links to social networking sites such as facebook and twitter. It assists the users to share important information through their favorite social networks. Despite their excessiveness, advertisements seen on each page of the website would aid the users to select their best option. The whole resources on the website are free to users; and evidently, the site meets its maintenance costs and other expenses from advertisers. The search option at the top-right corner of the home page enables the users to access required information by entering a key word or phrase.
Tuesday, July 23, 2019
Not needed Essay Example | Topics and Well Written Essays - 2000 words
Not needed - Essay Example I played a lot of field games there too. Did everyone love sports when you were a child and supported it? We did! My brother, my friends and I loved sports; we wanted to play even when the army was firing guns and dropping bombs! But, sadly, the grownups were dead against it of course. Now, that I have children I understand why, but then I loathed them. They did not let us play outside for long, especially during the Black September period. So, the schools in Jordan did not support sports that well? No, the times were not right. My school did though. We had these sporting events where we ran, jumped and played our hearts out to win a copy of the Holy Quran or get a new water bottle and sweets. What sports were you taught at school? Besides physical education, doing exercises and all, we were allowed to sign up for private sports like volleyball, basketball etc. My father paid extra for all of us to make sure we get enough of sports and recreation, so we had access to school supplies of balls and I remember even lying to my parents to stay back after school and practice with friends. Did you want to pursue sports and if yes, were you supported? I knew I was good, my family knew it too but getting into a national team would not have been easy. I did get a lot of time to play and practice but I was never encouraged to take it up as a career. But, Jordan had a National Football Team, why did you not try out? Yes, before I was born the team was good; I have heard my father say so. But then they never qualified for any league cups for the next 3 or 4 decades. So, no one really took the team seriously. Well of course now they play much better, not like Brazil or Argentina, but much better than what they played in the... However, after this low period Jordan faced an ââ¬Å"oil-boomâ⬠and the country progressed rapidly. Jordan witnessed rapid growth in a number of sectors both private and public. Everything seemed to get better. During this time, Wameed was in his teens and he was really athletic. He would often accompany his father to the Jordan Homenetnum sporting club. Most of the members were Jordanians while some were Armenian. Wameed and his brothers often played at the club and Wameed was particularly noticed because of his athletic built and good play. Eventually he was absorbed into the clubââ¬â¢s soccer team. Wameed played a number of tournaments and represented the team a number of times. His family was really proud of him, especially his father. Wameed recalls how much he loved football. At first he would listen to the radios about soccer leagues around the world, and he would jump up every time a goal was made. At first he was not very sure of the teams and did not support either, soon he learnt about different teams and picked out his favorite ones. However, very soon when things returned to normal his family bought a television. Wameed would spend a lot of time watching sports, no matter he understood them or not. Many of the sports were new to him, since the official rules of games such tennis, badminton etc was not known to him, yet he enjoyed each and every single second of watching. He, also remembers, how he would often sneak in his Palestinian friends, who had never seen a television in their life and watched sports with them. Wameed was specially hooked to the television when he saw soccer matches in the television. He carefully watched each and every move of the players and tried to copy them. He practiced them in his room and tried out the moves when he was playing outside.
Monday, July 22, 2019
The Concept Of Libel Essay Example for Free
The Concept Of Libel Essay This thesis seeks to look at the constituents of libel and distinguished from slander. The paper shall therefore begin by laying down a definition of the term libel and later look at the key elements that ought to be proved in a libel suit in reference to the New York Times Co. V. Suillivan suit and lastly look at the defenses that exist and the place of press ombudsman in handling libel cases. The laws of different jurisdictions have laid down distinctions between libel (a written defamation) and/or slander (an oral defamation). This thesis looks into defamation indepthly. Defamation has been defined in general terms as a communication which exposes a person to hatred, ridicule, or contempt, lowers such persons esteem, causes him to be shunned or injures him in his business or calling. (Phelps and Hamilton; 1966). It is therefore any written communication that holds a person up to contempt hatred, ridicule or scorn, thus in establishing a case of libel, one must proof that words published actually damaged the reputation of the person. (Roger V. Jackson Sun Newspaper 23 M. L. R. 1670 [1995]) and that at lease a significant minority of the community belief that as a result of these publications the plaintiff has been damaged. (Saudner V. WHYY TV, 382 A 2d. 257, [1998]). Injury that amounts from Libel is viewed in numerous ways. The injury may be as to have only hurt the reputation or it may have lowered ones reputation as to deprive them off their rights to enjoy social contacts. On the other hand, a personââ¬â¢s ability to hold a job or make a living may also be injured. (Yankwich; 1956) A person thus needs to show that they have been injured in one of the three ways for compensations to occur in libel suits. The institution of civil action for libel can be brought by any person however in instances where such persons die, it is a general principle that libel suits can not proceed or be instituted. However, the enactment of survival statutes in some jurisdictions has enabled relatives to proceed with such suits in instances where the plaintiff dies. In examining the locus standi of incorporated business they are entitled to actions for libel, however, cities, countries and agencies for the American government and governments the general can not excise loci standi in libel quite (City of Chicago . v. tribune publishing co. 139 n. e. 2d 86 [1923]) . The concept of burden of proof heavily lies on the plaintiff in libel cases. He must establish five key element of which this section shall delve into briefly before the law recognizes a statement and /or comment as being civil libel, it must be published According to law, publication occurs when one person, in addition to the writer and person who is defamed hear or see the material. Oftenly publication in newspapers or broadcast on television is presumed to have been disclosed to third parties. (Hornby. v. Hunter 385 S. W 2d 473 [1964]). Secondly the injured party must show the court that the exclusion of his name on the list of his best selling book was defamatory was held not to have validity as it had not specified his name in the list. The plaintiff must therefore be identified in the New York Times . v. Sullivan; the Montgomery police commissioner sought damages for false defamatory statement about the conduct of the Montgomery police department though he was never named in the ad. He contended that the comments on behavior of police also reflected on him. It was however established that plaintiff fell under the definition of all-purpose public figure whose job occupation is that of pervasive power and influence they are deemed public figures. Thirdly the examination of words as to constitute defamatory language is of essence . In libel cases, words are ordinarily considered in light of their ordinary meaning unless the evidence is persuasive as to show that the defendant meant something else(Mc Bride . v. Mewell Dow). Libel plaintiff must generally prove that the defamatory statements are false. This concept of falsity however differs with regards to public and private entities. In this case, if the plaintiff is a private person, they must prove the falsity of the libelous statement only when the subject matter is a matter of public concern (Philadelphia news paper Inc. v. Hepps). In the new York Times Co. v. Sullivan, the US court unanimously reversed the decision in this case stating that Sullivan could not recover damages in the case unless he proved that the defendant published false and defamatory advertisement knowingly or that the paper exhibited reckless disregard for the truth when it printed the material. The proof of reckless disregard for the truth was established in Garrison. v. Louisiana , by proving that the defendant had a high degree of awareness of probable falsity. The defenses that lie within a libel suit fall under the enactment of the first Amendment that establish the freedom for airing oneââ¬â¢s opinion. However a person cannot also sue for libel if he or she has consented to the publication of the defamatory material (Pressley. v. Continental Can co. ). In another case, defense falls under the concept of right to reply which is mostly interpreted as a self-defense concept where if a person has written defamatory statements about another party, such party may reply in defense. Reference: American Law Institute: 379 U. S. 64(1964). Restatement of Tort 2 ed, Philadelphia American Law. Ashley, P. Say it safely. 5th ed. Seuttle University of Washington Press 1976. D,H. B. Libel law Doesnââ¬â¢t Work. But can it be fixed and in what price? Libel law and freedom of the press; Marton. L. New York(1993). Phelps, Robert, and Douglas Hamilton, Libel. New York:Macmillan 1966. Sinolla,Rodney. Suing the Press, New York: Oxford University Press,1986.
Experiments with Metals and Ions of Metals Essay Example for Free
Experiments with Metals and Ions of Metals Essay Metals react with non-metals but each to a different extent. The most reactive metals are alkali metals (group1A, where group is a vertical column in the periodic table), which include lithium, sodium, potassium, rubidium, cesium and francium. All these metals have one electron in the valence electrons shell; this electron can be removed relatively easily, which means that this electron has a very small ionization energy. If we look closely at the elements of this group, we can see that they are not reactive to the same extent. This is because electrons have a negative charge and they are attracted o the nucleus, which has a positive charge. Valence shell electrons are responsible for the reactivity of an element; as the distance between valence electrons and the nucleus increases, the attractive force decreases and so the energy needed to separate the valence electron from an atom (ionization energy) decreases. So we can say that as the size of a metal atom increases, its ionization energy decreases and its reactivity increases (the most reactive alkali metal is francium and the least reactive one is lithium). An example of the reactivity of alkali metal is their reaction with water. For example: Na (s) + 2H20 â⬠+ 2Na+(aq) + 20H -(aq) + H2 (g) + heat We can identify this reaction by the following 2- 3- 4- H2 gas emerges Disappearance of metals Heat produced The appearance of hydroxide ions (OH-(aq)) makes the solution basic, which can be identified by using phenolphthalein as the indicator. We can compare between the metals by the rate of production of H2(g) as well as by the heat produced from this reaction. Alkaline earth elements (group IA) are active metals but less than alkali metals. Since calcium is larger than the magnesium atom, its ionization energy is smaller than that of magnesium. Thus, calcium is more reactive than magnesium. The other metals as aluminum, zinc, iron, lead and copper do not react with water, so we cant use water to distinguish between their reactivity. HCl(aq) is used to put them in order according to their reactivity. We can put the most common metal in a series according to their reactivity (from the most to the least reactive one). Potassium, sodium, lithium, calcium, magnesium, aluminum, zinc, iron, lead, copper, silver . When a metal in the upper part of the reactivity series reacts with aqueous solution of other metal ions lower in the series, the more reactive metal eactive metal transfers its electrons to the less reactive metal. According to this reactivity series, we can predict what will happen when a piece of zinc metal is put in CuS04 (aq) soluti on or in MgS04 (aq) solution. Since Zn is more reactive than Cu, when we put Zn in CuS04(aq), a reaction will occur as follows: Zn (s) + Cu2+(aq) + S042- (aq) â⬠+ Zn2+(aq) + S042- (aq) + Cu (s) However, Since Zn is less reactive than Mg, if we put Zn in MgS04(aq) there will be no reaction at all: Zn (s) + Mg2+(aq) + S042- (aq) â⬠+ No reaction. Materials: 10 mL Cu2+(aq) solution 0. 5M 10 mL Ag+(aq) solution 0. M 10 mL Mg2+(aq) solution 0. 5M 10 mL Zn2+(aq) saturated solution Pieces of the metals: Mg(s), Zn(s), Ag(s), Cu(s) lcm x lcm each. Equipments: 16 test tubs Emery cloth Tweezers Experimental procedure In the current laboratory session you will explore some of the characteristics of certain elements. You will start by comparing the reactivity of Zn, Mg, Cu and Ag metals by their ability to release electrons. a. Wipe the metals Zn, Mg, Cu and Ag using the emery cloth and put each of them into a clean test tube using a tweezers. b. Fill each of the test tubes with about 2 cm of the Cu2+(aq) solution. . Watch what happens and write down your observations. Wait for 2-3 minutes to determine whether a chemical reaction occurred in each test tube, and if so, write a balanced chemical reaction. zn cu2+(aq) : Mg in Cu2+(aq) : cu cu2+(aq) : Ag in Cu2+(aq) : c. Wipe the metals Zn, Mg, Cu and Ag using the emery cloth and put each of them into a clean test tube. d. Fill each of the test tubes with about 2 cm of the Mg2+(aq) solution. 2. Watch what happens and write down you observations. Wait for 2-3 minutes to determine whether a chemical reaction occurred in the test tube, and if so, write a Mg in Mg2+(aq) : Cu in Mg2+(aq) : Ag in Mg2+(aq) : Zn in Mg2+(aq) : e. Wipe the metals Zn, Mg, Cu and Ag using the emery cloth and put each of them Fill each of the test tubes with about 2 cm of the Zn2+(aq) solution. 3. Watch what happens and write down you observations. Wait for 2-3 minutes to Zn in Zn2+(aq) : Mg in Zn2+(aq) : cu zn2+(aq) : Ag in Zn2+(aq) : g. Wipe the metals Zn, Mg, Cu and Ag using the emery cloth and put each of them h. Fill each of the test tubes with about 2 cm of the Ag+(aq) solution. 4. Watch what happens and write down you observations. Wait for 2-3 minutes to Zn in Ag+(aq) : . 6. Cu in Ag+(aq) : Ag in Ag+(aq) : Sum your observations in the following table (color, precipitance, other changes): List the metals in order of their ability to release electrons. Receive an unknown solution from your teacher and determine what is the metal ion in the solution 7. Describe the tests you did in order to find the unknown ion in the solution and write what it was. Reactions of chlorine, bromine and iodine with aluminium In this demonstration experiment, aluminium reacts with each of three halogens, chlorine, bromine and iodine. Spectacular exothermic redox reactions occur, ccompanied by flames and coloured smoke, forming the solid aluminium halides: 2Al + 3X2 -+ 2AlX3 (X = Cl, and l) Read our standard health safety guidance Lesson organisation This is a class demonstration that shows the spectacular reactivity of three non- metals from Group 7 with a metal. These experiments must be done in a fume cupboard as both the reactants and products are hazardous. Teachers attempting this demonstration for the first time are strongly advised to do a trial run before doing it in front of a class. Each experiment should take about 5 minutes. Apparatus and chemicals Eye protection Thick chemically-resistant gloves such as marigold industrial blue nitrile Access to a fume cupboard The teacher will require: Mortar and pestle Heat resistant mat, 30 x 30 cm Watch glasses, about 10 cm diameter, 2 Reduction tube (see note 1) Test-tubes, 3 Test-tube rack Teat pipette Filter paper Spatula or wooden splint Bosses, clamps and stands Chemicals for one demonstration: Aluminium foil, a few cm2 Aluminium powder (Highly flammable, Contact with water may liberate hydrogen), 0. 3 g Liquid bromine (Corrosive, Very toxic), 1 cm3 (see note 2) Solid iodine (Harmful), 2 g Silver nitrate solution, about 0. 1 mol dm3 (Low hazard but stains skin and clothing at this concentration), about 10 cm3 A little deionised water in a washbottle chlorate(l) solution (14% (w/v) available chlorine) (Corrosive), about 100cm3 Hydrochloric acid, 5 mol dm-3 (Corrosive), about 50 cm3 Technical notes Aluminium powder (Highly flammable, Contact with water may liberate hydrogen) Refer to CLEAPSS Hazcard 1 Liquid bromine (Corrosive, Very toxic) Refer to CLEAPSS Hazcard 15A, SRA04 The aluminium/bromine reaction Solid iodine (Harmful) Refer to CLEAPSS Hazcard 54A Silver nitrate solution (Low hazard at concentration used) Refer to CLEAPSS Hazcard 87 and Recipe card 58 Chlorine (Toxic, Irritant) Refer to CLEAPSS Hazcard 22A and Recipe card 26 Sodium chlorate(l) solution (Corrosive) Refer to CLEAPSS Hazcard 89 Hydrochloric acid (Corrosive) Refer to CLEAPSS Hazcard 47A and Recipe card 31 1 The reduction tube should be fitted with a one-holed rubber stopper fitted with short length of glass tubing and attached to the chlorine generator. Alternatively an 8-10 cm length of wide bore glass tubing with a stopper fitted with a short length of glass ubing at each end could be used see diagram. Wear suitable protective gloves (thick, chemically resistant) when handling liquid bromine. Have 500 cm3 of 1 mol dm-3 solution of sodium thiosulfate available to treat any spillages on the skin. Procedure HEALTH SAFETY: Wear eye protection and gloves Reaction of A1 + C12 a Set up the chlorine generator in a fume cupboard. Make sure it is securely clamped. b Loo sely crumple a piece of aluminium foil (10 x 5 cm) so that it will Just fit inside the reduction tube and push it into the tube. Attach the tube to the generator ith a short length of rubber tubing and clamp it in position at the end nearest to the generator, so that the aluminium foil can easily be heated using a Bunsen burner see diagram. c Generate a gentle stream of chlorine by dripping the hydrochloric acid slowly on to the sodium chlorate(l) solution, and allow it to pass over the aluminium. When the green colour of the chlorine gas fills the reduction tube, start heating the aluminium foil with a Bunsen burner at the end nearest to the chlorine supply. Once the aluminium is hot, a bright glow will suddenly appear where it starts to react with chlorine. Remove the heat. The bright glow should spread along the aluminium. If not, heat again, and increase the flow of chlorine gas. A lot of white smoke aluminium chloride is produced, some of it condensing as a white powder on the walls of the reduction tube and the rest streaming out of the hole in the end of the tube. When the reaction is over, stop the chlorine supply and remove the heat. e When the reduction tube has cooled down, disconnect it and, still in the fume cupboard, scrape a little of the white powder into a test-tube. Add a little deionised/ distilled water to the solid to dissolve it. Care: the reaction between anhydrous aluminium chloride and water can be quite vigorous an audible hiss can often be heard see Teaching Notes. f Test a drop of the solution with Universal indicator paper. It is strongly acidic. Test the remainder with a little silver nitrate solution. A white precipitate forms, showing the presence of chloride ions. Reaction of A1 + Br2 a Tear or cut some aluminium foil into several small pieces about 2 x 2 mm in size. fume cupboard. Sprinkle a few pieces of aluminium foil on to the surface of the bromine. Within a minute there are flashes of flame and a white smoke of aluminium romide is formed, together the orange vapour of bromine. Carefully hold another watchglass over the reaction to condense some of the smoke on to its surface as a solid. b Wash any aluminium bromide collected in this way off the watchglass into a test-tube using a little deionised water (Care: see Teaching Notes below). Test the solution with indicator paper and silver nitrate solution as above. The solution is acidic and a cream precipitate of silver bromide is formed. Reaction of A1 + 12 a Weigh out 2 gof iodine, which should be dry, and grind it to a powder in a fume cupboard, using a mortar and pestle. Place the powdered iodine on a filter paper on a dry heat resistant mat and add 0. 3 g of aluminium powder to it. Mix the two solids together in the fume cupboard using a wooden splint do not grind them together. When they are thoroughly mixed, pour the mixture into a heap on the heat resistant mat or in a metal tray, such as a tin lid, positioned in the middle of the fume cupboard. b To start the reaction, use a teat pipette to place a few drops of water on the mixture. After a time lag, the water begins to steam and clouds of purple iodine vapour are given off, indicating that an exothermic reaction has started. After a few more seconds sparks are given off and the mixture bursts into flame. When the reaction subsides, a white residue of aluminium iodide remains. Scrape a little of this into a test-tube (Care: see Teaching Notes below), add some deionised water and filter if necessary. Test the solution with indicator paper and silver nitrate solution as above. The solution is acidic and a yellow precipitate indicates the presence of iodide ions. Teaching notes These reactions make quite spectacular demonstrations in themselves, the bromine + aluminium reaction even more so in a partly darkened room. Classroom management n semi-darkness (Practical Physics advice) The demonstrations can be used to show the reaction between reactive non-metallic elements and a fairly reactive metal to form compounds, or as part of the study of the reactions of the Group 7 elements. Here the apparent order of reactivity is not that predicted from their position in the Group (that is chlorine â⬠+ bromine â⬠+ iodine). This is because of the different physical states of the three halogens, and the different surface area of the aluminium as a powder or foil. This can be used to make an important point about fair comparisons of reactivity. These reactions also serve to show that aluminium is in fact a more reactive metal than it appears in everyday use. The protective oxide layer of aluminium has to be penetrated by the halogens before the reactions can start, hence the delays, and the need for water to assist the two solid elements getting into contact, in the case of aluminium and iodine. The clouds of iodine vapour released when aluminium and iodine react can stain the inside of a fume cupboard. Teachers may prefer to demonstrate this reaction outdoors, if possible. The anhydrous aluminium halides are vigorously hydrolysed (sometimes violently if freshly prepared nd hot, as here) by water, giving off fumes of a hydrogen halide and a forming an acidic solution of the aluminium salt. To dispose of the solid residues, allow them to cool completely before adding in small amounts to 1 mol dm-3 sodium carbonate solution in a fume cupboard. Wait until the reaction has subsided before adding Allotropes of sulfur Sulfur is heated slowly and steadily from room temperature, so that all the changes in colour and consistency as it melts and eventually reaches boiling point, can be observed. A fresh sample of sulfur is heated to Just above the melting point, then llowed to cool and crystallise slowly as monoclinic sulfur. A further sample is heated to boiling point, and the liquid rapidly chilled in cold water to form plastic sulfur. A separate sample of sulfur is dissolved in a warm solvent, and the solution allowed to cool and evaporate, leaving crystals of rhombic sulfur. All the observed changes in properties can be related to the different molecular structures of the three solid forms of sulfur, and to the changes in structure as the temperature of liquid sulfur is gradually raised. Read our standard health safety guidance This practical is described here as a demonstration. However, some teachers may wish to consider whether certain parts could be used as class practicals with appropriately skilful and reliable classes. A demonstration, without any accompanying discussion about the possible reasons for the changes in properties in terms of structure, would take up to 45 minutes. However, to derive maximum benefit from the experiment, more time needs to be allowed for such discussion. Apparatus and chemicals Heat resistant gloves Access to a fume cupboard Flexicam or similar camera, digital microscope, digital projector and screen or other ethod of projecting images of small crystals to the class (as available). Boiling tubes, 4 (see note 4) Test-tube holders, 2 Stands and clamps, 2 Conical flask, 250 cm3 Cork, to fit conical flask Beaker (250 cm3), 2 Beaker, 1 dm3 (see note 5) Thermometer, O 250 oc Petri dishes or watchglasses, 4 (or more) Bunsen burner, tripod and gauze Electric hotplates, 2 (optional, if available) Heat resistant mats, 2 Filter paper, about 18 20 cm diameter Spatula Paper clips Damp cloth (to extinguish small sulfur fires) Dimethylbenzene (xylene), (Harmful), 100 cm3 (see note 2) Cooking oil (Low Hazard), 700 cm3 (see note 3) Dimethylbenzene (xylene) (Harmful) Refer to CLEAPSS Hazcard 46 Sulfur (Low hazard) Refer to CLEAPSS Hazcard 96A Cooking oil (Low hazard) 1 The sulfur used must be roll sulfur, crushed toa powder. To crush the rolls of sulfur, place in a strong plastic bag on a hard surface. Use a hammer or a vice to break up the roll sulfur into small pieces, then crush to a powder in a mortar and pestle. Flowers of sulfur is not suitable because it contains a lot of insoluble amorphous sulfur. During the experiments sulfur may catch fire, releasing sulfur dioxide (Toxic refer to CLEAPSS Hazcard 97), which may cause breathing difficulties o some students. If this happens, extinguish quickly by placing a damp cloth over the mouth of the test-tube. If the combustion cannot be extinguished quickly, the test-tube should be placed in fume cupboard, and the fan left running. 2 Although other hydrocarbon solvents, such as methylbenzene, can be used to dissolve sulfur and form monoclinic sulfur, dimethylbenzene (xylene) is the least hazardous. 3 If suitable cooking oil is not available, other clear, high-boiling oils may be used, e. g. paraffin oil (Refer to CLEAPSS Hazcard 45B). 4 These are large (1 50 x 25 mm) test- ubes, and should be clean and dry. The test-tubes in which sulfur has been heated can be difficult to clean for general use. It may be worth keeping a set of such tubes from year-to-year for this experiment. 5 The large beaker containing the cooking oil functions as an oil-bath for heating the sulfur slowly and uniformly, while allowing students to see clearly what is happening to the sulfur. Other containers may be preferred for the oil-bath, provided the visibility is maintained, for example by use of a webcam and digital projector. Procedure HEALTH SAFETY: Wear eye protection. Before the demonstration: a Pre-heat the oil-bath to about 130 oc, and maintain this temperature. b Clamp one of the sulfur-containing tubes in the oil bath, so that the sulfur is below the level of the oil in the bath. c Half fill the 250 cm3 beaker with cold water. d In the fume cupboard, put about 10 g of powdered roll sulfur into the conical flask and add about 100 cm3 of dimethylbenzene. e Prepare filter paper cone held together by a paper clip and supported in a beaker, as shown below: The demonstration: a Two-thirds fill two test-tubes with powdered roll sulfur (about 20 g in each tube) nd place in the oil bath. The sulfur will melt to a transparent, amber, mobile liquid in about 15 minutes. b Remove one tube from the oil-bath and pour the molten sulfur into the filter paper cone. Allow the sulfur to cool slowly and solidify, forming a crust. c Break the crust with a spatula and, handling the filter paper cone with heat resistant gloves, tilt it so that any remaining liquid flows out of the cone of solidifying sulfur on to a piece of scrap paper or card (for disposal). Needle-shaped crystals of monoclinic sulfur will be seen inside the hollow cone.
Sunday, July 21, 2019
History of Transportation
History of Transportation History of Transportation Transportation was, is and will be one of the most important issues of peoples life. It accounts centuries. Definition of transportation can be different, as the reason, it can mean the trip between two places, two villages, for trade, war or maybe just for journey. It can be done using air, water or land. Transports transformed during centuries and today look much different than in nineteenth or at the beginning of twentieth century and much different than it was in early stages. Transportation is an integral part of history, history itself, in point of fact, has often been determined by movement across the land-movement of armies, of whole peoples in migration and of trade. In the early stages progress rate in land transportation was very slow. Man from the beginning was characterized by movement from one place to another, searching some food, attacking his neighbors, to find wife in other groups and so on. The main goals of man in early stages were: hunting and abduction. But all of these was often behind the human migration, the stronger conquering the weaker. Man for on his own feet could travel more than three miles per hour. Despite the flexibility of his physical structure, he was compared to other animals, which were stronger, more agile, and swifter, but the human animal had certain advantages, big brain, flexible hand structure, he had to walk upright, freeing his hands for the use of tools. Later man started to evaluate substitutes. Firstly he had dragged all the things he needed, but later the man understood that someone else also could do it by his direction and regulation. The animals: dogs, elephants, donkeys camels became the first, who a ppeared in the history of transportation. The earliest vehicle seems to have been the sledge. Very possibly the sledge had its origin in a simple branch drawn behind a man or beast. For thousand years ago the Egyptians used much the same kind of vehicle, but with heavier and stronger runners, to transport immense blocks of stone , some weighing as mush as 800 or 900 tones. So as we see the sledge was very useful, but later however the wheel made its progress. The oldest examples of wheel are found in Mesopotamia and date from the fourth millennium B.C., among the Sumerians, Akkadians, Elamites and Chaldeans. Sumerians were the first people who reach the civilization, so they seem to have been the first who used the full wheel. At the beginning it was three planks of wood , which were pegged together in a rough circle. Soon they strengthened it, using a metal band or tire and finally hollowed out for lightness and equipped with spokes. For a long time the chariots was reserved for the nobility, for trade or by the common peop le as wagons, but it was later. Sumerian chariot changed very little over a thousand years , until the introduction of the horse from central Asia. In the seventeenth century B.C. horse-drawn chariot made its appearance. It became the principal weapon of the Assyrians, who eventually subdues most of the civilized world. [1] The biggest transformations in transport sector started from the construction of roads. Romans constructed a huge road system that made possible to use different types of vehicles and also develop new ones. They had 20 different types of vehicles, from the two-wheeled carpentum, which was very fast and light and had a leather hoot for protection of drivers , to the four-wheel carruca, which could carry whole family. The first real roads, that were constructed were very short. Babylon under Nebuchadnezzar had its famous Procession street , which was made with large stones over a foundation of asphalt, which led through the city to a substantial bridge across the Euphrates. For facilitating the transportation of heavy blocks of stone the Egyptians built roads, which were short, but very broad. Times changed and from year to year people started to invent more energetically and interesting things for transportation. Historically horse, pulling a vehicle was very useful for people, but later they started to create different kinds of apparatus, which provided for them more energy to get from one place to another, from time to time. And so we come to the curious mechanical vehicles of the sixteenth and seventeenth centuries and which were operated by land levers. First everything started with invention of different and small carriages, which was possible to drive without horses. In 1645 Jean Theson create a small four-wheeled carriage , which was driven without horses for two seated man. Another invention was made by German , Hautsch around 1600, which also was used without horses. The ancient Chinese had attached some sails for their cart, which helped them along, the elector Johann Friedrich built a vehicle of this type in Europe in 1543. In 1600 Simon Stevin a military engineer, built a famous chariot, it had two masts, a plough-shaped rudder and all kinds of ingenious devices for trimming or lowering the sails with dispatch. In 1826 an English man , George Pocock launched smaller carriage, which he called flying Chariot, of course without horses, it worked average from 15 to 20 miles an hour. There was also another wind-propelled vehicles , named Flying Coach , which was invented by Non Jose Boscasa and Hacquets Eolienne The latter , favored by a southwest wind, actually sailed through the streets of Paris one day in 1834. The first steam carriage which actually worked and could not go faster than 4 miles per hour was Nicolas Cugnots fardier , a large cart. Intended to transport guns or other heavy loads , it was made of stout beams and had three huge , iron-strapped wheels, with power delivered direct to the single wheel in front by two massive cylinders. A big boiler and firebox were suspended over the front wheel, making it even more cumbersome. This frightening monster , which was tested before the Minister Choiseul in 1769, had to stop every 15 minutes to get up more steam and vibrated so much that it finally escaped from its inventor and tore into a wall of the arsenal. Nevertheless, it was the first vehicle in which the thrust of pistons successfully turned a driving wheel; in order words it was really the first automobile .[2] The fardier can still be seen at the Conservatoire des Arts et Mà ©tiers in Paris. On view at the Birmingham Museum is the second forerunner of the automobile, a small steam model built by William Murdock, Watts assistant in 1784. With its light wheels and little smokestack at the back it looks frail compared to the heavy fardier. The third pioneer vehicle was Oliver Evanss steam carriage, which he drove through the streets of Philadelphia toward the end of 1804. It was a huge amphibious boat which had been built to dredge the Schuylkill River. Evans named it the Orukter Amphibolos or the digger which works all ways because it was equipped with wheels for land travel and paddlewheel for the water. And it actually worked ,lumbering several miles over uneven ground before entering the river, where the paddlewheel took over from the belts which drove the wheels. In 1891 Richard Trevithick , helped by Andre Vivian, built a steam carriage with the engine in the rear which could carry about a dozen passengers at nine miles an hour. Two years later, before turning to the steam railway, Trevithick actually ran a steam tricycle through the streets of London. In the next 30 years or so quite a number of self -propelled steam carriages were built and operated on the new , hard surfaced roads of England and with considerable success. Outstanding was the steam carriage of Goldsworthy Gurney, which weighed two tones. By 1832 his coach was running on schedule four times daily between Gloucester and Cheltenham. In 396 trips it carried 3 000 passengers without mischance. Around 1834 Walter Hancock was operating several lines, including his Paddington-City of London run. But all these coaches disappeared and the same happened in France even through Onesiphore Pecqueur in 1828 had invented true modern steering with two wheels, and the differential for a re ar-wheel drive. Later train became very popular among other transports, its success was irresistible, of course because it could go faster with great safety and economy and also could carry more passengers. The railroad interests combines with owners of horse drawn stages , with people who sold horses , with turnpike companies , and farmers who grew oats for fodder -pushed through a series of laws hampering and taxing the road locomotives, forbidding them to travel faster than four miles an hour and finally requiring a man with a red flag to precede each self-propelled vehicle on a public highway. The latter act was not repealed until 1896. thus with the failure of the steam coaches Britain was deprived of any chance for an early lead in the automobile field. Bollees, were father and sons , who brought steam back on the road. Their first machine was the Obeissante a 15- horsepower monster weighing five tones and traveling at 24 miles per hour. It was well received when it was shown in Paris in 1873 . Five years later the Mancelle, a much smaller machine ,made its importance, it was much more economical. By this time Bollee machines became known throughout the Europe. There was the Marie-Anne , Nouvelle of 1880 , which could do 27 miles per hour , per Avant-Courrier of the same year and the Rapide of 1881. Count Albert de Dion, with the mechanic Georges Bouton, worked out a little three-wheeler in 1883 which could be drive by one man. He followed it with others, faster and more economical. But the principal inconveniences remained: the driver had to stock water and coal, light the fire, wait for his car to get up steam and finally he had to abandon all thoughts of traveling faster then 24 miles per hour prescribed by law. There is a great need. Baudry de Saunier wrote, to produce almost instantly and with little pressure the quantity of steam needed and to do it with a strictly non-explosive boiler.Ãâà » Leon Serpollet, last of the great steam-car inventors , did prissily this , making the Paris to Enghien-less-Bains run in 1888 on a kind tricycle which answered Baudry de Sauniers equipments. In 1890, with Ernst Archdeacon , he made the Paris-Lyon run in ten days. At Nice in 1902 Serpollet achieved a speed of 75 miles per hour. An eclectic automobile by Nicolas Raffard appeared in Paris in 1883 . About the same time an English man , Magnus Volk, brought out a similar car, while a carriage builder named Jentaud produced one with a seven horse-power engine that could make 15 miles an hour. Later on , a racing car by Jenataud achieved a world record- 56 miles per hour. This was finally capped by Camille Jenatzys electric Jamais Contente, which did 65 miles per hour. At the end of nineteenth century, when the gasoline automobile was still young, it seemed for a time as if the electric car might be the automobile of the future. Many were built -silent, powerful, and comfortable and were a common sight up into the 1920s, especially in the cities. But electric traction had a serious defect: the batteries often weighed a ton, and the driver had to stop frequently to recharge them. [3] It is difficult to say, who was the inventor of the first engine . Philippe Lebon in 1800 planned to explode a medley of air and lighting gas in a cylinder to move a piston.. Other inventors used gases and hydrocarbons as fuel and experimented mostly in design. Combustion engine first became commercially successful in middle of nineteenth century with small gas engines,, whose inventor was French, Joseph Etienne Lenoir. The next was to compress the mixture before exploding it , an idea which was worked out in terms of the conventional engine by Beau de Rochas, in 1862 . The idea was taken up in 1867 by Nikolaus Otto, he produced engine two times, as economical one and as fast as Lenoirs. His four-cycle Otto Silent of 1876 led directly to the modern automobile engine. Daimler, hitting upon gasoline as a fuel, produced a lightweight engine which he tested on a bicycle in 1885 , thus unwittingly inventing the motorcycle. His first automobile was a four-wheeler. Benzs was a simple three-wheeler , but it had some features, that anticipated the modern automobile., a rudimentary water-cooling radiator, differential gear and electrical instead of flame ignition. Its engine was a four-cycle. Like the Daimler , its speed was around 10 miles per hour. . Daimler sold his patent to Rene Panhard and the engineer Emile Levassor, who wanted to introduce the automobile to France. The first test was in 1890 and 1891 . The objective was to go from Porte dIvry to the Viaduct of Auteuil and back without engine trouble, an objective that was soon achieved. After this the firm of Ponhard-Levassor received its first order and soon was sharing it with Armand Peugeot who also used the patent of Daimler. In 1894 by Pierre Giffard of the Petit Journal organized the first great race between Paris and Rouen-77 miles, the competition was between all types of automobiles: whether steam, electric, or gasoline. The winner was Count Albert de Dion, who averaged 13 miles per hour in the little steam car. In 1895 a second race was organized ,much longer and more difficult, fro Paris to Bordeaux and return, a distance of 744 miles. Steam was represented by one of count de Dions cars, two Serpollets, and Bollees Mancelle, gasoline by a Panhard Levassor and three Peugeots and electricity by Jeantaud . From the 21 vehicles, which participated, Panhard Levassor was who won, completing the course in less than half of 100 hours anticipated by the organizers. The superiority of gasoline over steam and electricity was proved beyond a doubt. The race proved also that an automobile, like a bicycle could and should ride upon air. Michelin Brothers had been proved a success -even through they had to be ch anged by the drivers every 93 miles. The next round was infernal and murderous, right up to the Indianapolis race of today , the 24 hors of the Le Mans , of Monte Carlo, of other places. There was the Tour de France, from Paris to Berlin, the Paris-Vienna , the Gordon Bennett Cup and the bloody Paris- Madrid race of 1903, in which was killed Marcel Renault. During the Competition the roads between cities were turned into mad circuses filled with surging crowds. Out of the noise was born Germanys Taunus meet, Italys Monza, Englands Brooklands and in the United States , the Atlantic City. From year to year the automobiles improved. Then there were rallies and competitions, which sent the automobiles in different sides of the world. The United States , saw its first successful gasoline automobile in 1893-that of Charles and Frank Duryea. It was a small, four-horsepower phaeton with little engine. American Automobile industry comes form 1896, when the Duryea Motor Wagon Company produced 14 cars. The First Packard introduced in 1899. But the real contribution of United States was in mass production and the start player , her was Henry Ford, who is famous for all of us. Henry Ford first started with stem, but later he left the idea. He put together his first successful gasoline buggy in 1896, then series of cars 999, the Arrow and others and could not decide , which one of them was better. The answer on this question, later was received in Europe , first by Citroen and then by others. The immediate result was the Model T Ford. In 1909 Henry Ford had written that that the automobile of the future must be superior to the present car to beget confidence in the man of limited means , and sufficiently lower in price to insure sales for an enormously increased output. He said: the car of the future must be a car for peoplethe market for a lower-priced car is unlimited. [4]And latter, every one saw ,that he was really write, because the number of sold cars sharply increased. Between 1908 and 1928 there were sold more than 15 million Model T Fords. During 1925 , only in one day alone, more than 9000 were built.[5] Later the competitors and successors follo wed the example of Henry Ford, because it was really good idea, who else could imagine and do it. The First design of carriage in Italy , which could run without horses , was done by famous artist Leonardo da Vinci, if we look back. But Father Barsanti and Professor Mattenci were, who together took out a patent for a gas engine in 1854. In 1894 Colonel Bordino produced a small automobile. But the real beginning was in 1895 , the year the celebrated Agnelli created the no less celebrated Fiat in Turin. A Fiat in 1907 won a magnificent triple victory: the Traga Florio, the Sarthe circuit and the Emperors Cup. The road had been prepared for the elegant automobile, for automobiles, which are named as Lancia, Ferrari, Maserati and Alfa-Romeo. Now the automobile has everything it needed, things such as four-cylinder engine, wheels of the same size all around, electric lighting, an electrical self-starter , and for all of that we have to be thankful for American inventor Charles Kettering, who invented this automobile in 1911. [6] Looking at all these historical points we saw that the transportation was important not only in nineteenth century and today, but it comes from much earlier period, people used transportation for different reasons .During many years transportation transformed and the period from the nineteenth century to the present was the period of amazing changes and progresses in automobile industry. Transportation started by foots with man from early stages and today continues with luxury automobiles. In past we saw that the automobile was very luxury and very expensive pleasure for people, but today it is very necessary thing, which has almost all families and use them for different necessity , but as it was as in past , today automobile industry also feels and faces many different problems . What will be tomorrow nobody knows, how transportation and automobile industry can transform, maybe we can dream about something more, about something unbelievable in this sector. Meaning ofCommon Transport Policy Since the entry into force of the Treaty of Rome in 1958, the transport industry ,faithful servant that it is ,has undergone significant change in order to adopt to the growth and needs of international trade. [7] The Treaty of Rome provides the legal basis for the creation of a common transport policy . Next to agriculture and commercial policy the Common Transport Policy is one of the three common policies specially mentioned n Article 3 of the Treaty as one of the activities the Community must pursue in order to establish a common market and progressively to and progressively approximate the economic policies of the Member StatesÃâà ». Irrespective of the Treaty provisions, transport policy left under the control of the Member States . The Member States pursue different transport policies and proceed from different bases for State intervention. [8] Common policy means reformulating the policies of Member States to form a single Community policy: a process of integration culminating is supranational transport policy. [9] The main aim of the policy is to shun the difference between Member States. Transport industry has few differences from other industrial sectors. When we are talking about economic fields: Transport is used as an instrument of State economic policy. Transport is a major industry by such criteria , that ii is measured : employment , investment and etc. [10]In transport sectors are employed high percentage of workers . Transport sector of EU-15 employed 6.2 million people, and that increased to 7.4 million after enlargement of 2004.[11] Transport industry is important activity to other industrial sectors and its levels of rates are crucial to the States economy. In a market promoting specialized production, the consumer and the producer , both depend on transport , to meet their each others needs. The independent carrier, occupies a central position in the market as a whole: this his policies, unless regulated, can hinder international trade by discriminating as to charges between producers or also between consumers. Some regulations are important for modes which are covered but Transport , such as road rail, inland, waterway, sea and air, because most of them are competing with each other and sometimes conflicts are irreversible. Transport is an industry with public service obligations, where governments often intervene by obliging some services and also by controlling the tariffs. Railways are used an instrument of economic policy, where public financing of the infrastructure is very common. In case of roads, the building of roads often depends on the State, but once the roads are built and open to traffic many different types of users take advantage of their existence. Transport industry is characterized by undertakings of dissimilar structure, which provides interchangeable services. Inelasticity in the supply of transport owing of the perishability of its services makes full freedom of competition impracticable. Transport sector is subject to many international agreements, whose some of the Member states are parties and have to fulfill international obligations. In area of inland waterways, the Commission has incomplete competence because of relationships with third countries. The Rhine regime, which is established by the Mannheim Convention in 1868 , with Central Commission implementing its provisions, cannot be ignored. The Central Commission, within the EC territory governs the most important single constituent in inland transport. The area of air and maritime transport are governed by many international treaties. All this factors which are mentioned above made difficulties for the Union to develop such as policies, which will spirit the integration of transport services and satisfy the needs of the single European market. [12] The most important changes in European Transport industry started from 1970s, when increased the usage of road transport. This gross was really dramatic and it effected the railway transport. During the 1970s the rails share of the passenger market has fallen from 10.2 % to 6.3 %.[13] European railway increased investment on developing fundamental new techniques and infrastructures, such as high speed trains: TGV, Eurostar and etc., for competition with other transports modes. Also was mentioned the high increase in air transport for long-haul journeys and maritime transport has been relegated to the short-haul ferry market. [14] In the European Union transport sector is very important issue, it provides 4% of the GDP. Also as we already mentioned above, it provides employment for EU citizens. In 1991, employees in the transport sector constituted between 4 % and 5% of waged labor. It amounted to 5.6 million people, 2, 509000 of them were employed in road transport, 897000 in rail transport , 24 000 in inland waterway transport , 217000 in maritime and 349000 in air and 1569000[15] in other sector which are related to transport industry. Transport sector is the growth industry in European Union. The demand In industry is generally proportionate to Gross Domestic Product. Taking the average annual economic growth in the European Union since 1970 as 2.6 %, the growth in goods transport services has been 2.3 % and passenger transport services 3.1%. Transport is the link which brings together people and products from all European regions, above all the remoter regions. Transport in European Union was and is characterized by a great measure of government invention and a confused network of bilateral and multilateral inter-state agreements in which the Member States used to and still participate. [16] When we speak about Common Transport Policy it is important to distinguish three phases of this policy. First phase of the transport policy started after the entry into force of Treaty of Rime and continued till 1973-1974. During this phase , the European Community , was concentrated on creation of common market fro transport by road, inland waterways, rail and opening the national market between all Member States for competition. This idea was formulated in 1961 Memorandum by Commission and in 1962 Action Programme. [17] First phase of Common transport policy involved discussions between Member States and Commission, because the provisions giver by the Treaty were not concreted to what it should contain. At the end of the second phase, from 1973 , the accession of Denmark, Ireland and the United Kingdom to the European Community introduced more liberal and less land-centred views into inactive transport policy [18] At the end of 1973, The development of Common Transport Policy was determined again by the Commission and The Council . In 1974 in maritime and air transport sector two important events took place for development of Common Transport Policy : the Court gave judgment in the French Seamen case and under the auspices of the United Nations, the United Nations Conference on Trade and Development Code of Conduct for Liner Conference was adopted. [19] Third phase started from 1983, when the various proposals for structured development of the Common Transport Policy , in several memoranda concerning the inland ( 1983), air (1984) and maritime ( 1985) sectors.[20] Speaking about Transport policy it is important to mention the main factors, which influence , such as: geography, technology, wealth. The oldest influence probably lies in the physical features of European geographical environment, which can encourage or discourage travel. It is relatively easy to travel up and down a river valley such as the Rhine and Danube , much harder to cross major physical barriers such as the Alps or the Pyrenees other then by air. Most traffic crossing the English Channel or the Baltic has to go by the sea, though there is now a Channel Tunnel Between England and France, opened in 1994 and the Oresund bridge between Denmark and Sweden, opened in 2000. There are four rail tunnels through the Alps and seven road crossings, but some of these are open in summer only, and the two road tunnels between France and Italy, opened in 1965 and 1980, are single-bore with just one line of traffic in each direction. Heavy-goods traffic is heavily dependent on these two narrow tunnels, another under the Gotthard Pass in Switzerland and the one major four-lane highway which crosses the Brenner Pass at 1, 3 72 meters. The only significant rail and road crossings of the Pyrenees follow the Atlantic and Mediterranean coasts. Since these mountain chance and sea crossing generally coincide with national frontiers, which indeed they have often determined, they also contribute to keeping national transport policies separate. [21]Sometimes the national frontiers doesnt coincide the physical barriers. People always thought about travel and trading goods in places ,where they can use their own language , were their rights are respected and they have easier access to the education and medical system. It is very interesting in this case to mention the situation in German after the Second World War .When Germany was divided into two parts its system of roads and railways , built to facilitate military and civilian communications on East and West axis, had to be reconfigured to strengthen North-South communications on either side of the Iron Curtain.[22] After the reunification European Union is reducing the importance of national frontiers, for example with the creation of single currency of Europe-Euro, but for some people it is difficult to cross the borders and go to study or work , for few of the it is unbelievable to cross national borders, even where are no the physical barriers , who can avoid them. Even with the single European market, the volume of international trade in 1994 was only about 7% of the tonnage mowed within national frontiers.[23] Second important influencing on transport policy is technology. As we already mentioned, when we discussed the history of transportation , transport sector developed many times, during many years, first the feet presented the main transport for people, then transports developed by wheel , sail ant etc and over the past 250 years the steam engine, internal combustion engine, the jet engine , and electric traction have each facilitated a step-change in technology [24] the main objective of such as technological revolutions are to make transportation more comfortable, easier, cheaper and safer. The third factor which has the major influence on transport policy is wealth. There is very strong correlation between economic performance as measured by gross domestic product and the growth of goods and passenger transport. It seems that the more we earn , the more we spend on travel and on the consumption of goods which themselves have to be transported over long distances to reach our homes .And there is no sign as yet that these trends will not continue to generate a steadily increasing demand for transport. In 2001 Transport White Paper, the commission estimated that GDP growth of 43% between 1998 and 2010 will generate increases in the movement of passengers and goods of 24% and 38% receptivity. [25] Transport policy as we already mentioned above is very important issue for European Union , because it is important policy for economic sector of the Union, for Environment, for Labor Market and also for competition. And European Union always tries to implement different strategies to improve and reconstructure this policy for the weal-being of the citizens. Modes of Transport Transport sector covers different modes such as: road transport, railway, waterway and air transport. Development of all these modes is different by times and by structures. In this part we will discuss recent developments in European different modes of transport sector. Personal mobility has more then doubled from 17km a day in 1970 to 38km in the late 1990s.Road transport is Europes dominant transport mode and its dominance continues to grow. Private car ownership in the EU -15 increased from 232 per thousand in 1975 to 469per thousand in 2000 and continues to grow .[26] Road transport at the end of 1990s represented 44% of the goods transport market compared with 44% for short sea shipping, 8% for rail and 4% for inland waterways. In passenger transport it represented 79% of the market, 5 % of air and also 6% of railways. Development of road transport is very important and interesting case , because during last years the volume of road freight grew by 3.5% a year and 7% in the case of cross-border freight. The roads now take about 75% of freight traffic within the EU , compared with less than 50% in 1970. As regards road transport, the key mode is the private car and growth in car use. During last 30 years the number of cars tripled, at an increase of 3 million cars each year. For 1975 there were 232 cars per 1000 people and now there are 444 cars per 1000 persons.[27] For promotion of more safety transport , European Union introduced some legislations on the driver qualifications, inspection of cars
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