1 Column and Thin Layer Chromatography: The Separation of Spinach Pigments Russ Hoburg 02/15/2012 Abstract The main goal in doing the column and thin layer chromatography was to separate spinach extract into its components based on polarity and then to analyze the components. The separation of the spinach extract was done using the column chromatography with the wet/slurry packing method. Alumina was inserted into the column to act as the stationary phase. After the components were separated
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Column and Thin Layer Chromatography: The Separation of Spinach Pigment Abstract Spinach extract was separated into fractions containing compounds of similar polarity by column chromatography. Based on solid-liquid phase partitioning‚ this separation technique exploited the different polarity of the compounds in the spinach extract. Three fractions with different colors were obtained. The extract and its fractions were analyzed using thin layer chromatography (TLC). The TLC results showed that
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Title Identification of Analgesic Compounds Using Thin Layer Chromatography Abstract The objective of laboratory experiment six was to identify an unknown analgesic tablet using Thin Layer Chromatography (TLC) analysis. The procedure involved preparing TLC plates‚ solubilizing standard analgesics (ibuprofen‚ aspirin‚ acetaminophen‚ caffeine) and the unknown in isopropyl alcohol (IPA)‚ and developing the plates in acetone. Rf values were calculated for each compound. The unknown tablet showed an Rf
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Film discussion: Thin Anorexia nervosa is an eating disorder that occurs when an individual is unrealistically concerned about being overweight or feels an overwhelming need to be so thin that in either case an individual eats so little that they become malnourished. While Bulimia is where an individual binges and purges. They may eat a lot of food at once and then try to get rid of the food by vomiting‚ using laxatives or sometimes over-exercising. Both of which are diseases linked to physical
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plays a big part in the downfall of Lehman Brothers. The company was accused of false reporting and rewarding employees for taking part in dangerous risk taking deals. Maybe the downfall of the company would not have been completely preventable but taking the higher road and showing honesty and integrity might have assisted the company in some small way. While the company’s competitors were feeling the stress of the beginning of the economic downturn‚ Lehman Brothers should have taken that as
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A Case Study of the Lehman Brothers Bankruptcy 100 USD 80 USD 60 USD 40 USD 20 USD 0 USD Financial Risk MVE220 Work distribution: 2010-11-24 Both the members of the project team have contributed equally to the case. Even though several parts have been written individually‚ the analyzing and key concepts have been developed mutually together. Examinator: Holger Rootzén Robin Feng 910911-1675 Niklas Fredriksson 900310-1855 Abstract Lehman Brothers was the fourth biggest investment bank in America
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describe how specific organizational behavior theories could have predicted or can explain the failure of the company. Compare and contrast the contributions of leadership‚ management‚ and organizational structures to the organizational failure. Lehman Brothers Holdings Inc‚ the fourth largest US investment bank‚ succumbed to the sub prime mortgage crisis in the biggest bankruptcy filing in history. The 158 year old firm‚ which survived railroad bankruptcies of the 1800s‚ the great depression in
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Failure: Executive Compensation at Bear Stearns and Lehman 2000-2008. 13. Buiter‚ W.H. (2008)‚ Lessons from the North Atlantic financial crisis‚ Paper prepared for presentation at the conference ‘The Role of Money Markets’ jointly organised byColumbia Business School and the Federal Reserve Bank of New York on May 29-30‚ 2008. 2. Lehman Brothers ’ Risk Management Documents‚ chief risk officer Antoncic‚ Madelyn (17 August 2007) 3. Hudgins‚ Matt (2012)‚ Lehman Is Biding Its Time to Market Its Real Estate
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Table of Contents 1.0 History of Lehman Brothers 3 2.0 Causes of its Failure 5 3.0 Effects of Its Failure 8 4.0 Lessons Learned after the Collapse 9 5.0 Conclusions 11 6.0 References 12 7.0 Appendices 13 Abstract In year 2008‚ financial crisis had led to the collapse of many banks in United States. Lehman Brothers was one of the banks that had filed its bankruptcy on 15 September 2008. It was the biggest bankruptcy in the history and it still is for now
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Chromatographic Separation of Fluorene and Fluorenone Abstract: A mixture of Fluorene (1) and Fluorenone (2) was separated by column chromatography. Chemical Equation: Fluorene (1) Fluorenone (2) Mp 114C mp 83C MW 166.22 MW 180.21 Introduction: Column chromatography was invented by Tswett in 1906 so that his study of the chemistry of chlorophyll could be facilitated. Tswett made significant advances in the method and demonstrated its applicability to the separation
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