2008 A PROTEIN-APPENDED ROTAXANE BY HAYTHIM HASSANEIN SUPERVISOR PALL THORDARSON 2 Contents Certificate of Orignality .............................................................................................................. i Abstract ...................................................................................................................................... ii Acknowledgements .......................................................................................
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Fe‚ Na‚ Al‚ Si‚ K‚ and Ca in banana kepok peel powder was decreased. Adsorption of Procion dye The effect of initial concentration of removal Procion dye onto banana kepok peel powder and cellulose were
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Executive Summary Mattel has been criticized heavily for having to recall not once but thrice in 5 weeks 20 million toys manufactured in China with lead paint and/or loose‚ potentially dangerous magnets. Clearly Mattel does not have sufficiently tight quality control procedures in its supply chain to compensate for the extra risks of outsourcing to Chinese subcontractors and clearly there are design flaws in the toys with the magnets that could come loose. Although many observers give the company
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THEOLOGICAL CENTRE FOR ASIA (MALAYSIA) THE CALLING OF A MISSIONARY A PAPER SUBMITTED TO THE TCA FACILATOR‚ DR. TERESA CHAI Ph.D. ‚ IN PARTIAL FULFILMENT OF THE REQUIREMENTS OF THE COURSE MI 110 ON THE PRINCIPLES OF MISSION BY STUDENT NO. KCH00001 MALAYSIA 08 DECEMBER 2007 TABLE OF CONTENTS The Primary Call…………………………………………………………………………3 The Missionary Call……………………………………………………………………
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candies are different colors? Many candies contain colored dyes. Bags of M&Ms or Skittles contain candies of various colors. The labels tell us the names of the dyes used in the candies. But which dyes are used in which candies? We can answer this by dissolving the dyes out of the candies and separating them using a method called chromatography. Research Candy Chromatography is the method of analysis of separating and comparing dyes used in candies and food coloring. It is also a proven method
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Discussion: The two dyes identified were disperse blue 3 and disperse red 9. Disperse red 9 separated first because it is less polar than disperse blue 3. This is due to the structure of disperse red 9 being more symmetrical than that of disperse blue 3 and having more nonpolar bonds. Disperse blue 3 is more polar because it has a hydroxide bond and has a larger dipole. The principle behind using column chromatography is that it separates compounds based on polarity. The alumina serves to allow
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EXPERIMENT 2 ACID DISSOCIATION CONSTANT OF AN INDICATOR DYE OBJECTIVES Using spectrophotometric method: determine the wavelengths at which the acid and base forms of the dye in aqueous medium exhibit maximum absorption; determine the molar absorptivities of the acid and base forms of the dye and estimate an unknown concentration of the dye in solution using the Beer-Lambert’s Law; and determine the acid dissociation constant of the indicator dye. THEORY The absorption or reflection of certain
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its dye which is yellow dye #6 and what amount of this Gatorade sample is needed to kill someone. The outcomes in this experiment were that the yellow dye #6 concentration is 5.36 x10-6 M and that the LD50 (lethal dose) is 22‚515 L / KG. Introduction In this experiment‚ we are going to use the Absorption Spectroscopies to determine the level of risk posed to the consumer by the amount of dye present in a commercial food product and how much is needed to get a LD50 of this dye. The
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individually. This is accomplished in this lab by the technique called thin layer chromatography (TLC). TLC involves a stationary phase‚ which the TLC plates as well as a mobile phase‚ which could be one of two solvents used: ethanol-acetone for TLC. Dyes in a sample separate consequently because of their unique polarities. As a result‚ nonpolar substances travel further than polar substances in this process. The separation of a mixture into its components by TLC transpires because the distinctive components
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stain‚ Gram-positive bacteria stain with a _________ color due to the incorporation of the _________ dye into their cell wall. A. purple‚ safranin B. purple‚ crystal violet C. red‚ safranin D. red‚ crystal violet 4. What is the function of the mordant iodine in a Gram staining procedure? A. A mordant causes the crystal violet to run. B. A mordant fixes the bacteria to the slide. C. A mordant keeps dye attached to an object. D. All of the above 5. What is the order of reagents used in the Gram stain
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