the 9th century‚ and the initial documents of the ingredients were seen in the 11th century. At first‚ gunpowder was applied to commence fires. The Chinese also used it to blind‚ burn and poison people and give off a smoke screen. Another important use of gunpowder was used in fireworks. In China during the 12th-century fireworks were a way of scaring bad spirits and by the 17th century‚ they were a common form of fun in Europe. Gunpowder was used to cure skin
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Figure 1: Affinity chromatography of fumarase with the Ni2+-NTA-agarose column. Extract (9.9 mL) containing yeast (3.76g) in extraction buffer containing 0.1% Igapel CA-630 and protease inhibitors were pumped through Ni2+-NTA-agarose column. Fractions were collected by 1.5 mL portions by use of wash buffer (20.0 mL)‚ imidazole elution buffer (26.3 mL)‚ and wash buffer (10.0 mL)‚ again. Absorption readings were taken for all fractions with a Cary50 set at 280nm. The fumarase activity was determined
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Making TLC Plates from Bulk TLC Silica Gels Many TLC users prefer to use pre-coated TLC plates‚ but others because of their special needs‚ or because they need special additives or a special thickness‚ coat their own TLC plates. This paper is a quick review of what is needed for the process. Initial instructions for plate coating: If reproducible plates are needed‚ then the user should invest in a coating device from Camag or Desaga (addresses below). The devices consist of a tray that holds
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billing units‚ the most common one being the kilowatt hour. Periodic reading of electric meters establishes billing cycles and energy used during a cycle. When energy savings during certain periods are desired‚ meters may measure demand‚ the maximum use of power in some interval. In some areas‚ the electric rates are higher during certain times of day‚ to encourage reduction in
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things really are. Beliefs tend to be deep set and our values stem from our beliefs Values are about how we have learnt to think things ought to be or people ought to behave‚ especially in terms of qualities such as honesty‚ integrity and openness which when people are asked what are their values tend to be the main values. Attitudes are the established ways of responding to people and situations that we have learned‚ based on the beliefs‚ values and assumptions we hold. How we respond to situation
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Thin Layer Chromatography of the Unknown Analgesic Jessica Bajao*‚ Phoebe Abalos‚ Kevin Antiga‚ Carmelus Aseneta 3-Biology 2 College of Science‚ University of Santo Tomas‚ Manila‚ Philippines Abstract The group used five different analgesics in this experiment: aspirin‚ acetaminophen‚ ibuprofen‚ caffeine‚ and mefenamic acid. Six analgesics were spotted on the TLC plate including the unknown. After the development of the TLC plate‚ it was placed under ultraviolet light for the spots resulted
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VALUES AND LIFESTYLE OF THE “HIPPIES” Origins and Beliefs of the Hippies. The 1960s counterculture movement was comprised of the baby boomers who had grown into their teenage and young adult years in the 1960s‚ so they were often found in large numbers. The people involved were youths of America who were typically Caucasian‚ white‚ and middle-class‚ with ages ranging from fifteen to twenty-five. However‚ the conformity and peaceful times of the 1950s were not enough for their children‚ who were ambitious
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American Values There are many values of American culture; three common ones that come to mind are freedom of religion‚ education‚ and family. The freedom to choose what religion you believe in or the career you want. Also to be able to choose what college you want to attend or what major you want to select. To be able to have the freedom to choose what religion you believe in is something society doesn’t think of every day. A lot of countries don’t have that value; to choose their religion like
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Instructor: Ma ’am Lioanag Section: Civil Engineering 1-19 Date Performed: July 27 ‚ 2013 Group No.: 3 Date Submitted: August 3 ‚ 2013 Experiment No. 4 : PAPER CHROMATOGRAPHY INTRODUCTION The objective of this experiment was to resolve a given sample into its components by paper chromatography‚ to evaluate the retention factor of each component in the sample and to compare the relative solubility of the various components of a mixture of colors in a given solvent. METHODOLOGY
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What is Fair Value Accounting? An alternative approach to measurement that seeks to capture changes in asset and liability values over time. The International Accounting Standards Board (IASB) defines fair value as "... an amount at which an asset could be exchanged between knowledgeable and willing parties in an arms length transaction". Under the fair value measurement approach‚ assets and liabilities are re-measured periodically to reflect changes in their value‚ with the resulting change impacting
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