the paraben family‚ a group of compounds that possess antibacterial and antifungal properties. These agents are esters of para-hydroxybenzoic acid‚ which is why they are collectively called parabens. However‚ in contrast to its cousins‚ ethylparaben‚ butylparaben‚ and propylparaben‚ methylparaben receives its specific name owing to the fact that its chemical structure contains the methyl alkyl group. Methylparaben is found in several fruits‚ in particular blueberries‚ where it acts as an antimicrobial
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other company must ensure there are no issues regarding regulations or law for company’s product. As a conclusion‚ it is not easy entering new market or new country where the culture practices are not the same with home country. Each culture must be study to suit the local taste and also at the same time did not loss the touch or originality of one’s
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Lawrence L. Berkove (essay date winter 2000) SOURCE: Berkove‚ Lawrence L. “Fatal Self-Assertion in Kate Chopin’s ‘The Story of an Hour.’” American Literary Realism 32‚ no. 2 (winter 2000): 152-58. [In the following essay‚ Berkove contends that Chopin’s narration of “The Story of an Hour” is ironic rather than straightforward.] Kate Chopin’s thousand-word short story‚ “The Story of an Hour‚” has understandably become a favorite selection for collections of short stories as well as for anthologies
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able to console and care for our patient’s mental wellbeing. In accordance with the biopsychosocial model we must always identify that an illness has biological‚ psychological and sociological dimensions‚ as stated by the founder of the model‚ George L Engel. He believed that “to provide a basis for understanding the determinants of disease and arriving at rational treatments and patterns of healthcare‚ a medical model must also take into account the patient‚ the social context in which he lives‚ and
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experiment synthesized H-Gly-Phe-OH dipeptide using “Fmoc chemistry”. The first part of experiment was the synthesis of L-phenylalanine methyl ester hydrochloride. The methyl ester can be synthesised by reaction of thionyl chloride‚ SOCl2 and dry methanol with L-phenylalanine under reflux condition. The peptide bond was formed later in the experiment‚ where HBTU‚ DiPEA and a solution of Fmoc-Gly-OH in DMF were added to a solution of L-phenylalanine methyl ester hydrochloride in DMF. The product formed
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Nitration of Methyl Benzoate Introduction: Nitration is an example of an electrophile aromatic substitution reaction‚ where nitro (NO2) group is being substituted for a hydrogen on an aromatic compound. This is achieved by the formation of the nitronium ion by protonation of nitric acid from sulfuric acid. The zirconium ion is a strong electrophile and can react with aromatic compound such as Methyl benzoate to form an arenium ion intermediate. The arenium ion is then depronated to reform
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Turabian Footnotes Detailed guidelines for formatting according to Turabian style can be found in Kate Turabian’s Manual for Writers of Term Papers‚ Theses‚ and Dissertations‚ 7th edition. Below are some examples of citations for common types of sources. Quoted or paraphrased material should be cited in footnotes (unless a teacher specifically asks for endnotes). Footnotes should be single-spaced. |TYPE OF SOURCE |FIRST REFERENCE
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“Recitatif” is a story about Twyla and Roberta; two characters of different race that accidently meet every couple of years. From the onset of the story‚ Morrison introduces the story with a racist thought from Twyla‚ stablishing the story’s main topic is race. The story in general is to get the reader to contemplate on the significance of the story. She does this by never unveiling the race of either character. Instead she uses various social codes to help the reader identify the race of each
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a strong strategy for me to discuss on. L’Oréal is a cosmetics and beauty products’ company and it was founded at Clichy‚ France in 1909. Eugène Schueller is the founder of the company‚ who became an instructor at the Sorbonne after completed his study in the Institute for Applied Chemistry in Paris. L’Oréal was primarily named as Société Francaise des Teintures Inoffensives pour Cheveux which means French Society for Inoffensive Tincture of Hair. It is a French based company which headquartered
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Nitration of Methyl Benzoate Abstract: This procedure demonstrates the nitration of methyl benzoate to prepare methyl m-nitrobenzoate. Methyl benzoate was treated with concentrated Nitric and Sulfuric acid to yield methyl m-nitrobenzoate. The product was then isolated and recrystallized using methanol. This reaction is an example of an electrophilic aromatic substitution reaction‚ in which the nitro group replaces a proton of the aromatic ring. Following recrystallization‚ melting point and infrared
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