carried out by a professional such as a podiatrist or a foot health practitioner and requires the gentle removal of the outer ring using a scalpel. The application of astringent or powder to close the pores‚ reduce sweating and an application of Benzoin compound can be used to harden the skin. The patient should be given advice on appropriate footwear and the use of a gel toe separator to avoid the toes from rubbing together. The SMAE Institute (2012) state the hard corn normally occurs on top
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structure of unmetallated and metallated porphyrin. Figure 2. Chemical tructures of‚ H2TPP (A) & metallated tetraphenylporphyrins‚ (B). The Adler-Longo method will be used to synthesize tetraphenylporphyrin. This method includes pyrrole and benzaldehyde heated in propionic acid which is conveyed in first reaction scheme. The expected yield range for this experiment is around 10-20 percent. Reaction Scheme 1 Metalation is done by heating the metal salt in a distillation tube until it refluxes
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Abstract In this experiment‚ 4-(4-chlorophenyl)-3‚4-dihydropyrimidine-2-one is synthesized in a solvent-free reaction‚ where urea‚ ethyl acetoacetate‚ 4-chlorobenzaldehyde are used as the reactants and p-toluenesulfonic acid is used as the catalyst. This reaction is similar to the original synthesis of DHPM by Pietro Bignelli‚ as it incorporates a single step. Due to its environmentally friendly conditions‚ such as the use of solar energy as a heat source and the lack of solvent‚ this synthesis of
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CHEMISTRY (Theory) Time allowed : 3 hours General Instructions: (i) All questions are compulsory. Maximum Marks : 70 (ii) Marks for each question are indicated against it. (iii) Question numbers 1 to 8 are very short-answer questions and carry 1 mark each. (iv) Question numbers 9 to 18 are short-answer questions and carry 2 marks each. (v) Question numbers 19 to 27 are also short-answer questions and carry 3 marks each. (vi) Question numbers 28 to 30 are long-answer questions and carry 5 marks
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The purpose of Module 11A was to test for the presence or absence of a particular set of functional groups through the use of wet chemical tests. In this manner‚ Unknown A which was a colorless solution‚ was first tested with 2‚4-DNP which after mixing for a few seconds formed a bright yellow precipitate. Although this confirms the presence of either a ketone or aldehyde group‚ one simple chemical test does not completely specify the presence or absence of other functional groups. Therefore‚ a second
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modest solubility in water. Although phenols are structurally similar to alcohols‚ they are much stronger acids‚ however they are weaker acids compared to carboxylic acids. In the experiment‚ the following samples of aldehydes are used‚ 1) Benzaldehyde It is the simplest aromatic aldehyde. It is employed to confer almond flavor. It is used chiefly as a precursor to other organic compounds‚ ranging from pharmaceuticals to plastic derivatives. 2) Formaldehyde It is the simplest form
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Molecular gastronomy Transglutaminase (TG) is a naturally occurring enzyme in plants‚ animals‚ and bacteria. Enzymes are proteins that act as catalysts in chemical reactions; they speed up reactions and make reactions occur that otherwise wouldn’t. Although TG is a newcomer to the kitchen‚ cooks have used enzymes for thousands of years. Enzymes in papaya‚ for instance‚ are traditionally used as meat tenderizers. The enzyme rennet is used to curdle milk when making cheese. Enzymes that break down
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| 2013 | | INSTITUTE OF HEALTH SCIENCES-GABORONE MICROBIOLOGY LABORATORY REPORTCOMPILED ON: 13/02/2013DUE DATE: 19 /02/2013BY;KEMO KEBAITSANG ID;3005LECTURER; MR MOLEFHI | Identification of entrobacteriaceae | Escherichia coli cause 99% of URINARY TRACT INFECTION. | DAY 2 GRAM STAINNING Materials * Two slides * Saline water * Culture organisms * Wire loop * Gentin violet * Iodine * Safradin * 95% alcohol Procedure * Prepare slide smears of both
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the operating room and placed in the supine position. General ET anesthesia was induced. SED’s were placed on his lower extremities. The patient’s left arm was tucked at his side. A Foley catheter was placed. His abdomen was shaved‚ prepped with benzoin solution and draped in the usual standard fashion. A small semicircular infraumbilical incision was made and carried down through the subcutaneous
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BACHELOR OF SCIENCE (HONS) BIOTECHNOLOGY YEAR 1 SEMESTER 1‚ 2 & 3 UDBB 1164 FUNDAMENTAL ORGANIC CHEMISTRY 0 EXPERIMENT 1 PROPERTIES OF HYDROCARBONS Introduction Hydrocarbons are compounds which contain only carbon and hydrogen‚ can be classified into several types‚ depending on their structure. Aliphatic hydrocarbons are divided into three classes: alkanes (e.g. methane‚ ethane and propane) have only single bonds‚ and are said to be saturated; alkenes (e.g. ethene and propene)
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