architecture into seven distinct layers: the Application‚ Presentation‚ Session‚ Transport‚ Network‚ Data-Link‚ and Physical Layers. As a result it is frequently referred to as the OSI Seven Layer Model. A layer is a collection of theoretically similar functions that provide services to the layer directly above it and obtains service from the layer beneath it. On each single layer an instance provides services to the instances at the layer above and requests service from the layer beneath. An example of this
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COLUMN AND THIN LAYER CHROMATOGRAPHY Group 9 RAMOS‚ Sharina Joy; REYES Aina Marie; REYES Jallisa Maan; RUBIO‚ John Michael; SABINO Patricia Anne; SANTOS‚ Carlos Rafael ABSTRACT To separate the colored components of siling labuyo and to determine the purity of the components‚ the students performed a column and thin or solid-liquid chromatography procedure. The solid may be almost any material that does not dissolve in liquid phase. But for this experiment‚ the solid used by the students was
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Experiment #1: Thin-Layer Chromatographic Analysis of Drug Components | Performed on: Wednesday‚ May 8th‚ 2013 | | | 5/15/2013 | | Introduction: The goal of this experiment was to identify an unknown analgesic drug through the use of thin-layer chromatography. The drugs used were‚ Unknown #1‚ caffeine‚ aspirin‚ and acetaminophen. Thin-Layer Chromatography is a technique for identifying substances using a mobile phase (developing solvent) that draws up through a
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using thin-layer chromatography. The unknown’s behavior in thin-layer chromatography will be compared with that of its possible component analgesics. The possible unknowns and their analgesic ingredients will be Anacin (aspirin‚ caffeine)‚ Excedrin (acetaminophen‚ caffeine‚ aspirin)‚ Motrin (ibuprofen)‚ and Tylenol (acetaminophen). Introduction Thin-layer Chromatography(TLC) was the method used to figure out and identify the drug. TLC is done on a plate that is coated with a layer of absorbent
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Thin-Layer Chromatography of Analgesics Abstract: In this experiment thin-layer chromatography (TLC) was used to determine the composition of an unknown mixture of analgesics given five references of AC‚ ASP‚ CAF‚ IBU‚ SAL‚ an unknown consisting of a mixture of three of the references‚ and two unknowns (6‚23) containing a single reference compound. The composition of the unknown mixture and two single unknowns were determined by spotting the reference compounds and the unknown compounds on two
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Q 4. What are the four layers of documents of ISO 9000? Please explain the purpose of each layer of document and their interelationship ISO 9000 emphasis on document control as it could act as a means of communication‚ define and clarify quality activities‚ rationalize the work of quality assurance‚ facilitate quality control‚ provide a base for system audit‚ and as teaching materials. While the above benefit bases on 4 types of documents‚ according to ISO9001: 2008‚ 4.2.1‚ the quality management
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the unit of data sent or received at each of the following layers? a. application layer:Message b. network layer:Datagram c. data-link layer:Frame Q2-12) When we say that the transport layer multiplexes and demultiplexes application layer messages‚ do we mean that a transport-layer protocol can combine several messages from the application layer in one packet? Explain. The TCP/IP protocol suite uses several protocols at some layers‚ we can say that we have multiplexing at the source and demultiplexing
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Environment Canada Environnement Canada Ozone Depletion and Climate Change: Understanding the Linkages Angus Fergusson Meteorological Service of Canada Published by authority of the Minister of the Environment Copyright © Minister of Public Works and Government Services Canada‚ 2001 Catalogue No. EN56-168/2001E ISBN: 0-662-30692-9 Également disponible en français Author: Angus Fergusson (Environment Canada) Editing: David Francis ( Lanark House Communications) David Wardle
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Unit 4 Assignment 1: Computer Basics Review Chapter 4 Review Activities Questions Answers 1. You have created a simple electrical circuit with a battery‚ wires‚ and a light bulb. Which of the following is true about this circuit? (Choose two answers) B. The battery’s positive lead pulls current toward that lead. C. The circuit creates a direct current 2. A PC NIC and a switch port create one electrical circuit to use when sending data. The sender creates a (maximum) 1-volt electrical signal
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HOUSING REQUIREMENTS FOR CHICKEN - LAYER LPM605- SHELTER MANAGEMENT PRASOON 10/11/2011 Contents Essentials of Good Housing: 3 Location of Poultry House: 3 Housing requirements: 4 Poultry housing systems: 7 Styles of Poultry Houses: 11 House Construction: 11 Housing requirements for layer birds Poultry is housed for comfort protection‚ efficient production and convenience of the poultry man. Essentials of Good Housing: Comfort: The best egg production is secured
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