20 – 03 – 13 EXPERIMENT: - PREPARATION OF POLYURETHANES AIM Synthesis of polyurethanes OBJECTIVES - Mixing a diisocyanate and a diol in polyurethane synthesis of two distinct products. - Comparing polyurethane from castor oil to that made from polyethylene glycol. - To establish the type of foams in terms rigidity or flexibility. THEORY Polyurethanes‚ also known as polycarbamates‚ belong to a larger class of compounds called polymers. Polymers are macromolecules made up
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Human growth hormone (HGH) injections are great in shortening the length of time needed to build muscle mass. Weight training can certainly help you achieve that goal but it will take a long time. Synthetic HGH injections will change your flabby body into muscled one quickly and you don’t even need to go to the gym as frequently as before. If it were that simple‚ a lot of people would be going around buffed and all. But of course we don’t see them because HGH injections are just too expensive‚ and
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Synthetic Drugs of Abuse It seems that primitive man at times wished to escape his reality. He or she probably found some natural herbal drugs to facilitate this desire. In fact abuse of the coca leaf and the opium poppy has been occurring the last 3000 years‚ and probably longer. The mescaline containing peyote cactus has been abused by the indians for even longer. They thought it was a gift from god because they often realised profound truths when they where inebriate(at least‚ thats what they
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Synthesis of Isopentyl Acetate (Banana Oil) Using a Fischer Esterification Reaction Zhenshu Wang (Stan) TA: Aaron League September 23‚ 2012 Purpose: The purpose of the experiment was to perform the acid-catalyzed Fischer Esterification of acetic acid and isopentyl alcohol to form isopentyl acetate‚ or banana oil‚ which is used in flavor industries. The equilibrium of the reaction was changed by adding an excess amount of acetic acid. The reaction was refluxed and product was purified by extraction
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Mohammad Ash-Shahid Biruar March 7‚ 2015 Case Study: Banana Time I. STATEMENT OF THE PROBLEM This case deals with the members of the “clicking” work group. The problem appears to be the lack supervision and management oversight as this group is completely isolated from other areas of the factory. This issue has led to different concerns including horseplay‚ extended breaks and operator disruptions which all lead to a loss in production. II. OBJECTIVES 1. To address the operator’s
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termed as "synthetic milk"‚ is the invention of devil-minded mafia of certain milk traders. Of late reports have been received that large quantities of such spurious and fatal product have found way in markets of Rajasthan‚ Himachal Pradesh‚ Uttar Pradesh‚ Bihar‚ Madhya Pradesh‚ Karnataka and Orissa. The monster is surfacing in Punjab and Haryana also. Chemicals like urea‚ caustic soda‚ refined oil (cheap cooking oil) and commonly used detergents are used in the preparation of synthetic milk. Detergents
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are natural looking. These wigs are made up of hair either donated by someone by his/her will or hair collected in beauty parlour. These wigs have more flair and can be washed like normal hair and last for several years. These wigs are expensive. Synthetic Hair Wig: they look alike to natural hair but require extra maintenance. These wigs cannot be experimented with versatility. These wigs are not heat friendly except the specialised one. With proper care these wigs can last for 4-5 months. These
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Background Chiquita Brands International is one of the world’s largest banana producers that were founded in 1899. Founded as United Fruit Company‚ Chiquita has grown to be one of the top three companies in the banana business with a combined control of 60% market share. Chiquita had annual revenues of $4.7 billion and operating plants worldwide with its main business coming out of Colombia. In this case study‚ it tells the story of the Chiquita business and how they faced many problems in the past
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6. Added approx.15 ml of 1mol/L Na2CO3 solution.Shaked‚drained and discarded the lower layer leaving the ester in the separating funnel. Diagram : Observations : From our results‚the ester we made produced a light banana smell. In this experiment for preparation of an ester as the alcohol used was pentanol and the acid used was glacial acetic acid‚ added conc.sulfuric acid a dehydrating agent used to remove the moisture‚ safety was a priority in this experiment as this were all highly
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How I wish I was being devoured down there with them. At the very least‚ it’d be less torturous than suffering through Gala the Apple’s self-assured soliloquy of his health benefits for the fifth day in a row. “Have I mentioned‚” he boasts to the bananas‚ “how healthy I am? The lady was just telling her children the other day that I keep away doctors! It’s true! And did you know‚” he puffs out his chest pridefully‚ “that when I ripen‚ I’ll be the sweetest fruit of
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