POLYTHENE POLLUTION INTRODUCTION The pollutants that are of major concern in today’s world are non biodegradable pollutants that do not degrade or degrade very slowly in the natural environment. Polythene pollution is an example of non biodegradable pollution and they persist on our earth years after years affecting even future generation. Polythene pollution is mostly created by polythene bags‚ plastic syringe‚ pesticide containers‚ medicinal bottles. [pic] Effects of Polythene Pollution
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❖ INTRODUCTION • DEFINITION Minimal processing is defined to include all unit operations such as washing‚ sorting‚ trimming‚ puling‚ slicing‚ coring etc. The purpose of minimal processing is to deliver to the consumer a like fresh with an extended self life whilst ensuring food safety and maintaining sound nutritional and sensory quality i.e. at least 7 days domestic consumption and 7-15 days for overseas consumption. Minimally processed products are also called fresh cuts
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period. Animals had free access only to drinking water during urine collection period. The urine was analyzed for volume‚ pH‚ calcium‚ oxalate‚ phosphorus‚ uric acid‚ creatinine‚ magnesium and citrate. Urolithiasis was induced by administration of ethylene glycol (0.75%) into healthy male Wistar rats. For in vivo analysis‚ 24h urine samples were collected on 0th‚ 7th‚ 14th‚ 21st and 28th day of treatment from all the rats of different treatment groups and the samples were preserved and stored. pH
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Adrenergic Agonists (a.k.a. Sympathomimetic Drugs) I. Direct stimulants of α and β receptors 1. Epinephrine (Adrenaline) 2. Norepinephrine (Levophed) 3. Levonordefrin (Neo-Cobefrin) 4. Dopamine (Intropin) 5. Ephedrine II. Direct stimulants of α receptors (α agonists) 1. Phenylephrine (Neo-synephrine) III. Direct stimulants of β receptors (β agonists) 1. Isoproterenol (Isuprel) 2. Selective stimulants of β2 receptors in the bronchi (for asthma) 2.a. Salbutanol (Ventolin) 2.b. Terbutaline
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Polyethyene is a type of polymer that is used in our daily life. Polyethylene(abbreviated PE) is a thermoplastic polymer‚ meaning that is can be melted to a liquid state and remolded as it returns to a solid state. PE is chemically synthesized from ethylene‚ a compound that is usually made from petroleum or natural gas[1]. The main mechanical properties of PE are the ultimate tensile strength and the modulus of elasticity. There are different types of Polyethylene‚ which differ from each other by
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empirical formula mass 28.0 = n x 14.0 n = 2 So the molecular formula for the compound is 2 x empirical formula‚ ie‚ 2 x (CH2) which is C2H4There are many compounds that can have the empirical formula CH2. These include: * C2H4 (ethene or ethylene) molecular mass=28.0g/mol and n=2 * C3H6 (propene or propylene) molecular mass=42.0g/mol and n=3 * C3H6 (cyclopropane) molecular mass=42.0g/mol and n=3 * C4H8 (butene or butylene) molecular mass=56.0g/mol and n=4 * C4H8 (cyclobutane) molecular
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Organic chemistry Organic chemistry is one of the ‘branches’ of chemistry and is seen as distinct from other branches‚ such as inorganic and physical chemistry. It can be described as the chemistry living processes (often referred to as biochemistry) but extends beyond that. It focuses almost entirely on the chemistry of covalently bonded carbon molecules and as well as life processes‚ it includes the chemistry of other types of compounds‚ including plastics‚ petrochemicals‚ drugs and paint
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various chemicals which are mainly toxic. These chemicals are certainly harmful to the health and the environment. The chemicals used to make tgese plastic bags are toxics that are sources of various diseases and disorders in humans such as xylene‚ ethylene oxide‚ and benzene. They also have negative effects on the air‚ livibg organisms (plants) and water. There are two major methods that release the toxic chemicals in the plastic bags which are burning and throwing. Many people‚ im pretty sure have
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Name: Ana Cecilia Alcalá Bolio Registration: 2693441 Course title: Chemistry II Teacher’s name: Hugo Skyol Pliego Cortes Module: 1. Hydrocarbons in life. Activity: Homework 3 Date: January 30‚ 2013 Team: Doesn’t apply. Bibliography: Universidad TecMilenio. BlackBoard. Topic 3. http://bbsistema.tecmilenio.edu.mx/webapps/portal/frameset.jsp?tab_tab_group_id=_2_1&url=%2Fwebapps%2Fblackboard%2Fexecute%2Flauncher%3Ftype%3DCourse%26id%3D_109276_1%26url%3D Wikipedia.org. “Ethane” (2012)
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the same amount of chemicals as a smoker. Tobacco smoke contains more than 4‚000 chemical compounds‚ more than 50 of which are known to cause cancer.6 Chemicals that cause cancer include: Arsenic‚ Benzene‚ Beryllium‚ Butadiene‚ Cadmium‚ Chromium‚ Ethylene Oxide‚ Nickel‚ Polohium-210‚ and Vinyl Chloride.1 Other toxic chemicals in secondhand smoke is Hydrogen Cyanide‚ Carbon Monoxide‚ Formaldehyde‚ and Ammonia. No one would want to consume any one of these chemicals separately‚ but billions of smokers
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