Task 3: How could Thin Layer Chromatography (TLC) have been used to prepare a pure sample of aspirin? The method of using thin layer chromatography is easy‚ quick and relatively cheap to carry out this makes it ideal for preparing pure samples of aspirin. Equipment Required: • Thin Layer Chromatography Paper • Ruler • Pencil • Solvent • Beaker • Micro Capillary • Access to a fume cupboard • UV light • Clingfilm • Individuals sample of aspirin • Pure sample of aspirin • Sample of salicylic acid Method:
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2/21/13 The Hindu : Today’s Paper / NATIONAL : Ancient copper plates‚ gold coins found in Karnataka temple Today’s Paper » NATIONAL Ancient copper plates‚ gold coins found in Karnataka temple T.S. Subramanian A set of copper-plate charters and a bull emblem engraved on one such plate‚ issued by Sankama-II of the Kalachurya dynasty in March 1180 CE. On the right is a ‘Ane Gadyana’ variety gold coin. Of the eight such coins discovered‚ three were issued by Ganga ruler Sivamara-I (regnal
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National Security Strategy & Policy National Security Strategy & Policy – Basic Concepts 1. In order to understand the concept of National Security Strategy & Policy (NSSP)‚ it is pertinent to understand certain fundamentals. They are: a. Concept of nation-state in its universal application and more so its relevancy to Pakistan b. National Purpose (NP)‚ a statement of resolve and determination for which a Nation – State aspires to exist. c. Determination of
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CHAPTER 5 FINAL GENERAL ARRANGEMENT CHAPTER 5 FINAL GENERAL ARRANGEMENT 5.1 Final General Arrangement The General Arrangement of a ship can be defined as the assignment of spaces for all the required functions and equipment‚ properly coordinated for location and access. The general arrangement represents a summary or integration of information from other division and specialties in ship design to provide all necessary function of the ship in the most efficient
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Introduction Chromatography is a technique used to separate a mixture into its individual components. In this experiment‚ chromatography is done by using a thin layer chromatography (TLC) plate and filter paper. The word ‘chromatography’ itself means the separation of colours. However‚ nowadays‚ both coloured and colourless compound are used in chromatography by various methods. In chromatography‚ the separation process of mixture is mainly based upon the polarity and molecular weight of sample
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To: National Security Council From: Cyber Security Student‚ University of Pittsburgh‚ Pittsburgh Campus Subject: Internet Security: Online privacy policies help criminals‚ but raise questions about increasing surveillance and decreasing privacy to general public. Internet privacy may be a thing in the past due to necessary government control. 1. Executive Summary: The NSC has tasked us to assess the potential risks associated with the United States government expanding their abilities of
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Dollar General Case Analysis Dollar General (DG) has succeeded in becoming a prominent competitor in the extreme value retail market segment in the United States. Throughout the years‚ DG has executed key business initiatives that have led to major advantages. They have implemented a low cost business model that targets smaller communities‚ which in turn allows for lower prices on products that consumers consider essential. By using the low cost business model‚ DG has been able to sustain a
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GENERAL KNOWEDGE India Gate to Gholkoda Fort Part India Gate :- Sir Edwin Lutyens (1931) New Delhi :- Sir Edwin Lutyens ‚Herbert Baker Rastrapathi Bhavan :- Sir Edwin Lutyens Secretariat (SansadBhavan) :- Sir Herbert Baker Konnaught Place :- Robert torr Russell Purana Quila :- Humayun Humayun Tomb :- Mirak Mirza Ghiyas Jami Masjid :- Shajahan Red Fort :- Shajahan Khooni Darwaza :- Sher Shah Qutab Minar :- Qutab-ub-din-Aibak --- Iltutmish Suarjkund Lake :- Suraj Pal of Tomar dynasty
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CHAPTER 7 SECURITY-MARKET INDICATOR SERIES Uses of Security Market Indexes Benchmark to Judge Performance of Individual Portfolios Develop an Index Portfolio Examine Factors That Influence the Stock Market Technical Analysis of the Market Derivation of Systematic Risk for Securities Differentiating Factors in Constructing Market Indexes The Sample: Size‚ Breadth‚ and Source Weighting of Sample Members: price-weighted‚ value-weighted‚ unweighted Computational
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SECURITY OF WIRELESS COMMUNICATIONS Introduction Wireless devices‚ like all technologies that provide external access to corporate networks‚ present security challenges. With wireless standards and practices still rapidly evolving‚ it is important to understand the strengths and limitations of available technologies in order to implement a secure solution. Extending current security policies to encompass wireless devices requires an understanding of the security features of both wireless devices
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