The yield % of the synthesized polymer was calculated by the equation: Yield %= (Weight of synthesized polymer)/(Weight of the monomers taken) ×100 Characterization of synthesized polymer: Chemical analysis using Fourier transform infrared Spectroscopy: Fourier transform infrared (FTIR) spectrum of monomers and synthesized PLGC was obtained in the range of 4000-400 cm-1 using at least 40 scans at a resolution of 4 cm-1. The monomer L-lactide and glycolide spectrum was recorded using
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Tinnitus referred as ears ringing‚ in humans‚ can be caused by a variety of factors; such as high-level sound exposure‚ ototoxic drugs‚ and hearing loss. It is basically the self perception of sound in the absence of acoustic stimulation. the sound waves hit the outer ear and converge into the ear drum. The vibrations at ear drum are transferred into the inner rear through the middle ear. Once the sound waves reach inner ear‚ they travel through the cochlea towards the organ of corti. Further the
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The purpose of this experiment is to synthesize isopentyl ester by an esterification reaction between a carboxylic acid and an ester. Carboxylic esters‚ like isopentyl acetate‚ are normally used to create artificial flavors. In the preparation of isopentyl acetate‚ esterification of acetic acid and isopentyl alcohol occurs. Esterification is an equilibrium shift to the product side using an excess of one of the starting components. In this experiment‚ the excess reagent is acetic acid because it
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"Kala Bharati - View Article - What Is Bharatanatyam." Kala Bharati 10 December 2003. What Is Bharatanatyam. N.p.‚ n.d. Web. 26 Nov. 2012. <http://www.kalabharati.ca/forum/viewtopic.php?t=21>. RAMAN‚ Sruti PATTABHI. "WHAT IS BHARATANATYAM?" Articles - WHAT IS BHARATANATYAM? - N. PATTABHI RAMAN. N.p.‚ Sept. 2001. Web. 26 Nov. 2012. <http://www.narthaki.com/info/articles/article35.html>. *
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with five priority areas: profit‚ people‚ portfolio‚ partners‚ and planet. They claim “this vision is premised on the understanding that ensuring a sustainable future for its business equates to ensuring a sustainable future for the entire planet” (Raman‚ 2007). In its 2003 environmental report‚ Coca-Cola recognized three tasks that demanded attention: water quality and quantity‚ energy and climate change‚ and solid waste management. Weaknesses There is an increasing amount of literature
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In order to record the Absorbance Spectrum you must use the MeasureNet Spectrophotometer that is provided for you at your station. To set up the Spectrophotometer‚ first press On/Off. Then press Main Menu‚ F5 Spectroscopy‚ and F2 Absorbance(in that order). Then press Setup and F1 to set up the parameters of the scan. Set the Y axis(Intensity) maximum at 2.0 and press Enter. Leave minimum at zero and press enter once again. Leave X axis(wavelength) parameters
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Physics 4052 Spring 2004 Y. Kubota K. Wick Project Proposal for Physics 4052 Introduction You must begin to think about a possible experimental project to carry out next semester (Physics 4052). The reason for this is two-fold: first‚ it will introduce you to the process of proposal writing‚ which is an unavoidable and very important part of modern experimentation‚ and second‚ it will enable us to make any necessary plans for procuring equipment. To start you thinking about this process‚
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Task 3: Tests for Anions: An Anion is an atom which is negatively charged therefore indicating a larger amount of electrons than proteins. Overall the tests for anions were mainly conclusive however 6 out of 8 of the anions we were testing for could only be determined from one specific result for example if a black precipitate formed following the tests the substance is therefore a sulphide however the same result would also show the presence of carbonate and hydrogen carbonate this therefore
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INDIAN SCIENTISTS IN INTERNATIONAL ARENA Indian scientists are famous throughout the world. They have pioneered several significant scientific discoveries so far. Since the ancient period‚ India is considered as one of the scientific powerhouses in the world. Thus‚ this country has been scientifically advanced for several centuries now and the Indian scientists have made numerous path-breaking discoveries in the field of science. The various fields in which the Indian scientists have excelled
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Experiment 1: TLC Analysis of Analgesic Drugs 1/23/2011 Purpose: The goal of this experiment is to test our knowledge and understanding of TLC analysis by having us do a TLC analysis of analgesics to figure out their main chemical components. Calculations: 1.) Rf = Distance spot traveled/ distance solvent traveled Results: Table 1: TLC Analysis Analgesic Drugs | Rf Value | Acetaminophen | 0.323 | Aspirin | 0.597 | Caffeine | 0.081 | Unknown 154 (Plate 1) | 0.081‚ 0.306‚ 0.597
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