manufacture polyester chips. The process description is as follows Polyester chips are manufactured by two step chemical reactions between PTA ( Pure terephtalic acid ) and MEG (Mono ethylene glycol) The two step reaction are : Esterfication and Poly condensation Process description : PTA and MEG mixed together in paste mixing tank. Mixing of paste is done by special type of agitator. The slurry obtained in paste tank is fed to esterification reactor by screw pump. The esterification reaction
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2.3 Amorphous forms‚ solid dispersions and cocrystals. Stable crystal forms of drugs pose problem in solubilization due to higher lattice energy. So‚ in regards to solubility‚ disordered amorphous forms provide distinct advantage over crystal forms. Hence‚ changing the solid state characteristics of pharmaceutical API renders the molecule more water soluble. But‚ excess of enthalpy‚ entropy and free energy of amorphous forms make them prone to crystallization leading to the formation of stable crystals43
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Reviewing Ideas and Using Concepts: P.258-259 Reviewing Ideas: 1. Describe the function of tRNA‚ mRNA‚ and rRNA. The function of tRNA is to delivers amino acid to ribosomes during translation in the order specified by the mRNA. The function of mRNA is to specify which amino acids must be placed during protein synthesis or translation. The function of rRNA is just to become part of the ribosomes. 2. In what situation does RNA play a role similar to enzymes? RNA is like an enzyme when it
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The Earth’s atmosphere has changed over billions of years‚ but for the past 200 million years it has been much as it is today. We are‚ however‚ causing our atmosphere to change by human activity. Burning fossil fuels and deforestation are two examples of human effect on the environment. Composition of the Earth’s atmosphere The composition of air You need to know the proportions of the main gases in the atmosphere. The Earth’s atmosphere has remained much the same for the past 200 million years
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TRANSCRIPTION Submitted To: Ma’am Shumaila Nadeem Submitted By: Zinnia Shah Date of Submission: Sep’25th-2014 KINNAIRD COLLEGE for WOMEN CONTENTS Introduction to transcription in eukaryotic cells -RNA-polymerases -promoters -outline of steps involved in transcription -transcription factors -basal-transcription-apparatus
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Part 5: Synthesis‚ characterization and evaluation of COS-SMCC-(fatty acyl) CGKRK as in vitro gene delivery system to MDA-231 The delivery of siRNA is a great challenge due to its susceptibility to serum nuclease digestion‚ quick renal clearance. In addition to its anionic charge which hampers its cellular uptake. Therefore‚ the success of the gene carrier system relays on‚ the design of a delivery system that can protect siRNA molecules from enzymatic degradation‚ the ability to translocate the
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prefrontal cortex. G. The adrenergic receptors regulate the closing of sphincters and relaxation of the organ walls. H. Polyneuropathy is an appropriate term to describe Nick’s symptoms because his symptoms are caused by damage to more than one nerve. (poly meaning multiple) I. The symptoms that indicate polyneuropathy are the decreased ability to feel pressure or pain. Burning and tingling in feet‚ decreased reflexes‚ being clumsy and dizziness. J. Nick’s symptoms indicate a peripheral polyneuropathy
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biotechnological production of biopolymers with tailored properties suitable for high-value medical application such as tissue engineering and drug delivery. Microorganisms are used for the biosynthesis of xanthan‚ alginate‚ cellulose‚ cyanophycin‚ poly(gamma-glutamic acid)‚ levan‚ hyaluronic acid‚ organic acids‚ oligosaccharides and polysaccharide‚ and polyhydroxyalkanoates. Microorganisms are beneficial for microbial biodegradation or bioremediation of domestic‚ agricultural and industrial wastes
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http://www.kewpid.com 1. Fossil fuels provide both energy and raw materials such as ethylene‚ for the production of other substances 1) Construct word and balanced chemical equations of chemical reactions as they are encountered • Methane + oxygen carbon dioxide + water • CH4(g) + 2O2(g) CO2(g) + 2H2O(l) 2) Identify the industrial source of ethylene from the cracking of some of the fractions from refining of petroleum Generally‚ demand for petrol exceeds supply produced from fractional distillation
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Chapter 18 Regulation of Gene Expression PowerPoint® Lecture Presentations for Biology Eighth Edition Neil Campbell and Jane Reece Lectures by Chris Romero‚ updated by Erin Barley with contributions from Joan Sharp Copyright © 2008 Pearson Education‚ Inc.‚ publishing as Pearson Benjamin Cummings Overview: Conducting the Genetic Orchestra • Prokaryotes and eukaryotes alter gene expression in response to their changing environment • In multicellular eukaryotes‚ gene expression regulates development
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