"Polycyclic aromatic hydrocarbon" Essays and Research Papers

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    Chemistry 4.2

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    Everything you need to know about hydrocarbons INTRODUCTION: organic chemistry Organic chemistry is the chemistry of compounds that contain carbon and hydrogen. The element carbon has a special role in chemistry because it bonds with other carbon atoms to give a vast array of molecules. The varity of molecules is so great that we find organic compounds in many common products we use‚ such as gasoline‚ medicines‚ shampoos‚ plastic bottles‚ and perfumes. The food we eat is composed of different

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    tendency to undergo evaporation on being exposed to the air even at an ambient temperature‚ they are invariably termed as volatile oils‚ essential oils or ethereal oils. They mostly contribute to the odoriferous constituents or “essences” of the aromatic plants that are used abundantly in enhancing the aroma by seasoning of eatables. Oil is "essential" in the sense that it carries a distinctive scent‚ or essence‚ of the plant. Essential oils do not form a distinctive category for any medical‚ pharmacological

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    is used in the petroleum refinery to crack larger molecules and/or to remove S‚ N and metals from petroleum derived feed stocks such as‚ gas-oil and heavy oil. Hydrocracking is a process in which higher hydro carbons are converted into smaller hydrocarbon .The rate of cracking depends on several factors like temperature ‚catalyst. Its main objective is to remove feed contaminants and to convert low value gasoil to valuble products.Purpose of hydrocracking severe form of hydroprocessing is to break

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    By the year 2050 the world’s population will reach 9.1 million. In order to feed this larger population food production must increase. And it demands high crop yield to provide food for all. For this purpose the use of chemical fertilizers and pesticides has been very high. Though satisfactory crop yield is obtained by the application of chemical fertilizers and pesticides‚ their use brings out certain disadvantages. These include pollution of large water resources‚ destruction of microorganisms

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    follows a certain scheme on testing the compound. Each test will link to another test until we ended up with the class of that compound. We finally determine the class of the three unknowns. It is found out to be an Sb - amine -‚ S -salt -‚ and an N -aromatic compound-. Keywords: solubility‚ classification‚ organic compounds‚ solubility test‚ preliminary test Introduction One important part of experimental organic chemistry is to be able to analyze and identify an unknown organic compound from its functional

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    refineries‚ and used as fuel in combustion engines. It is made of over 250 types of hydrocarbons. Aromatic hydrocarbons like toluene and benzene are used to increase the octane rating of gasoline. Other additives are also added to improve engine performance and reduce the emission of harmful gasses formed as byproducts of the combustion process. Some hydrocarbons found in gasoline like benzene are carcinogenic. These hydrocarbons escape into the air around us while we are refilling petrol at a gas station

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    CHEMISTRY ISU: REFINEMENT OF CRUDE OIL My ISU will focus on Petroleum‚ a complex mixture of hydrocarbons that occurs in the Earth in liquid‚ gaseous‚ or solid forms. The term is usually restricted to the liquid form‚ commonly called crude oil‚ but as a technical term it also includes natural gas and the viscous or solid form known as bitumen. In its liquid and gaseous states‚ it is also known as Oil‚ or Crude Oil. Italicized are segments from my ISU or introductions to the planned topics.

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    Riociguat Case Study

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    Long Island University Riociguat (Adempas‚Bayer) Therapeutic class: Cardiovascular Agent‚ Soluble Guanylate Cyclase Stimulators Clinical Pharmacology: Sensitizes soluble guanylate cyclase (sGC) to endogenous nitric oxide (NO) by stabilizing the NO-sGC binding. It also directly stimulates sGC independent of NO. Riociguat stimulates the NO-sGC–cyclic guanosine monophosphate (cGMP) pathway and leads to increased generation of cGMP with subsequent vasodilation Pharmacokinetics: Absorption:

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    organic chemistry lab manual

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    NORTHERN CARIBBEAN UNIVERSITY DEPARTMENT OF BIOLOGY‚ CHEMISTRY and ENVIRONMENTAL SCIENCE LABORATORY MANUAL Instructor: Dr. M. Wilson CHEM401: BIOCHEMISTRY for NURSES Prepared by: Oreane Collins CHEMISTRY LABORATORY REGULATIONS AND SAFETY PRECAUTIONS Reference: http://www.sciencebyjones.com/safety_rules.htm Thanks to the Flinn Scientific Safety Rules for much of the below.  General Guidelines  1. Conduct yourself in a responsible manner at all times

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    Lung Cancer

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    The Genetics of Lung Cancer Catherine Hayworth BIO 355A/357A June 14‚ 2012 Colorado Christian University Cancer can be one of the hardest battles that one must face‚ whether that battle is lost or won‚ it changes the lives of everyone involved. Lung cancer is one of the most diagnosed cancers and it affects the lining of the lungs and the ability to breathe. Lung cancer is the number one killer of men and women than any other cancer worldwide. This cancer is mostly found in smokers and

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