NMR spectroscopy

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    Positron emission tomography (PET): is an anatomically based measurement that utilizes small radioactive tracers that are able to identify and determine glucose and metabolic levels within the organs of the body. This type of tomography could be used in a concussion assessment to determine the metabolic activities and glucose levels of the brain, as these levels are important and often become altered following a concussion. Functional magnetic resonance imaging (fMRI): is an anatomically…

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    Schiff Base Essay

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    CHAPTER 2 LITERATURE REVIEW 2.1 Synthesis of Schiff base Method preparation for Schiff base ligand is a straight forward synthesis and easily modified using different amines and carbonyl compound. This could be one of the reasons that make Schiff base ligand popular in coordination chemistry research. Synthesis of Schiff base ligand commonly, taking place in alcohol through condensation reaction of amines and carbonyl compound. The acid/base catalysis or heating is employed in the synthesis…

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    Cyclodextrins Research Paper

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    Complexation of Cyclodextrins Cyclodextrins (CDs) are most important carriers because of their semi-natural property as it is produced from a natural material i.e. starch, by simple enzymatic conversion. Solubility and dissolution rate of BCS class II drugs can be improved by addition or by complexation with hydrophilic carriers like cyclodextrins. Cyclodextrins have the capability to form inclusion complexes with the guest molecules i.e. poorly water soluble drugs. The formed inclusion complex…

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    90 °C. At timed intervals, a 0.90 mL aliquot of the polymerization solution was taken for analysis. This sample was then filtered through a short alumina column to remove the catalyst for GPC analysis. The conversion of styrene was followed by NMR spectroscopy, and molecular weights and molecular weight distributions were determined using…

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    The pyrylium synthesis was ____ based on the NMR, and the salt color that was in agreement with others in the section. The wavelength of maximum absorbance for pyrylium salt 1 was __, based on the average maximum absorbance for all those who synthesized the molecule, which is __ compared to the other…

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    Nuclear Chemistry: The Magnetic Resonance Imaging The evolution of medicine is quite interesting. It first started out with spirits, omens, and other mythical beliefs. Then, the discovery of science has allowed for more practical ways to examine and heal a body. First the simple tools came into play, then the advanced technology. As the years keep progressing, more and more discoveries are being made. One example of this is magnetic resonance imaging (MRI). Nuclear chemistry has allowed for…

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    Temazepam Research Paper

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    Temazepam, commonly known as Restoril, is a sleeping pill that is prescribed to patients. This drug is classified under a type of drugs called benozaphines, which are, “a large group of drugs with sedative and anxiety-reducing properties, which have been found valuable for a large number of uses” (UXL Encyclopedia of Drugs and Addictive Substances). This class of drugs is used to reduce anxiety and help with insomnia. Since temazepam is classified as a benzodiazepine, I was curious as to what…

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    5-Iodosalicylamide

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    The observed experimental melting point of the product was determined to be 235-137 oC. When compared to the literature melting point 228 oC of the predicted product, 5-iodosalicylamide, it can be concluded that the product is very pure. Infrared spectroscopy revealed three peaks at frequencies ~1650 cm-1, 3196-3333 cm-1, and 3439 cm-1. Those peaks indicate the presence of an amide, amine, and an alcohol, respectively.…

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    Oligoetherol Synthesis

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    New method of synthesis of oligoetherols with carbazole ring Renata Lubczak Abstract: The new method of synthesis of multifuntional oligoetherols with carbazole ring suitable for obtaining the polyurethane foams of enhanced thermal resistance was presented. At the first step of the synthesis the carbazole was reacted with excess glycidol to obtain the product of (n +1) functionality, where n is number of equivalents of glycidol reacted with carbazole. Carbazole reacts with glycidol without…

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    hypochlorite (bleach). Thin layer chromatography (TLC) is used to monitor the progress of the the reaction. The second week of the reaction, 4-tert-butylcyclohexanone is reduced using sodium borohydride or the Meerwein-Pondorff-Verley (MPV) conditions. NMR spectroscopy is used to evaluate the stereochemical…

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