"Polycyclic aromatic hydrocarbon" Essays and Research Papers

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    approved by the Cypriot Parliament and is harmonized to “Directive 94/22/EC of the European Parliament and of the Council of 30 May 1994 on the conditions for granting and using authorizations for the prospection‚ exploration and production of hydrocarbons” Contents Introduction 4 1. Conditions and requirements for granting authorizations 4 2. General and specific information

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    Preparation of Azo Dyes

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    converted to the orange sodium salt known as the methyl orange. INTRODUCTION Para-nitrobenzeneazoresorcinol dye and methyl orange belong to a class of dyes known as “azo colors” which contain the azo group linked to two aromatic nuclei. The nature of the aromatic substituent’s on both sides of the azo group (-N=N-) controls the colors of the azo compound as well as the water- solubility of dyes and how well they bind to a particular fabric. In addition to the azo group‚ the dyes

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    Plastic Waste Management

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    Plastic Waste Management 1. Plastics Waste: Environmental Issues and Challenges The quantum of solid waste is ever increasing due to increase in population‚ developmental activities‚ changes in life style‚ and socio-economic conditions‚ Plastics waste is a significant portion of the total municipal solid waste (MSW). It is estimated that approximately 10 thousand tons per day (TPD) of plastics waste is generated i.e. 9% of 1.20 lacs TPD of MSW in the country. The plastics waste constitutes two major

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    crude oil. I have found out that they put crude oil into a machine and separate using an interesting method called fractional distillation. Fractional distillation of crude oil is where they separate out oil into hydrocarbons with similar boiling points‚ called fractions. Each hydrocarbon fraction contains molecules with similar numbers of carbon atoms. To my understanding I think each of these fractions boils at a different temperature range. That is because the different sizes of their molecules

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    Alternative Refrigerant

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    reunification‚ however‚ it faced severe economic problems and was due to be closed down. The meeting between the scientists and DKK Scharfenstein resulted in the birth of ’Greenfreeze’ technology for domestic refrigeration. Greenfreeze refrigerators use hydrocarbons for both the blowing of the insulation foam and the refrigerant and they are entirely free of ozone destroying and global warming chemicals. When DKK Scharfenstein announced their intention to mass produce "Greenfreeze"‚ Greenpeace successfully

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    Cracking Lab

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    alkenes. Theory: Fuels made from oil mixtures containing large hydrocarbon molecules are not efficient. They do not flow easily and are difficult to ignite. Crude oil often contains too many large hydrocarbon molecules and not enough small hydrocarbon molecules to meet demand. Cracking allows large hydrocarbon molecules to be broken down into smaller‚ more useful hydrocarbon molecules. Fractions containing large hydrocarbon molecules are vaporized and passed over a hot catalyst. This breaks

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    Organic Chem

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    fractions depend on their physical and chemical properties. www.igcse.at.ua     Hydrocarbon molecules are only made of a chemical combination of carbon and hydrogen atoms. They are compounds because they consist of atoms of atleast two different elements.    THE FRACTIONAL DISTILLATION OF CRUDE OIL www.igcse.at.ua Crude oil is a complex mixture of mainly hydrocarbon compound molecules. A mixture consists of two or more elements or compounds which are not

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    Pat 1 Synthesis of 4-aryl-6-indolylpyridine-2-carbonitriles and evaluation of their biological activity Synthesis of 6-indolyl-4-aryl-3-cyanopyridine-2-one (1a-e) Employing the MCRs approach and microwave irradiation‚ an equimolar amounts of aromatic aldehyde‚ 3-acetylindole‚ ethyl cyanoacetate were reacted with excess of ammonium acetate in one-pot‚ reaction‚ under the microwave irradiation‚ afforded a novel series of 4-aryl-6-indolyl-nicotinonitrile-2-one derivatives 1a-e. Ethylene glycol was

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    Chara Dyes Analysis

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    The results of the experiments carriedout for the degradation of fabric dyes from aqueous solution using Chara and Chara beads are discussed below.Various analytical techniques like UV-Vis‚ FTIR spectroscopy were used to confirm the decolorization as UV-Vis spectroscopy; FT-IR spectroscopy and toxicity bioassay were truly used [14]. Also‚ Fourier transform infrared spectroscopy (FT-IR) is widely used to confirm the product obtained after decolorization of dye degradation experiments [15]

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    Aromatherapy 1

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    Absolutes‚ CO2s and Hydrosols are also commonly utilized in aromatherapy. Although essential oils‚ CO2 extracts and absolutes are distilled by different methods‚ the term essential oil is sometimes used as a blanket term to include all natural‚ aromatic‚ volatile‚ plant oils including CO2s and absolutes. In addition to essential oils‚ aromatherapy encourages the use of other complementary natural ingredients including cold pressed vegetable oils‚ jojoba (a liquid wax)‚ hydrosols‚ herbs‚ milk powders

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