synthesis of 4-hydroxy-4‚4-diphenylbutn-2-one was a three week multi-step project. The steps involved protecting the ketone of ethyl acetoacetate with a ketal group‚ followed by preparation and reaction with Grignard‚ then purification by extraction and recrystallization. The yield was 78.5%‚ but there are impurities present suggested by 1H-NMR‚ IR‚ and TLC. However‚ the results do indicate the desired hydroxyketone was formed. Introduction: The purpose of this multi-step lab was to synthesize 4-hydroxy-4
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ESTIMATION OF 1-4‚ DIOXANE IN SHAMPOOS/ CONDITIONERS/HAIR CREAMS/ SODIUM LAURETH SULFATE BY HEAD SPACE GAS CHROMATOGRAPHIC TECHNIQUE INTRODUCTION 1-4‚ DIOXANE 1‚4-Dioxane is a heterocyclic organic compound‚ classified as an ether. It is a colorless liquid with a faint sweet odor similar to that of diethyl ether. The compound is often called simply Dioxane because the other Dioxane isomers (1‚2- and 1‚3-) are rarely encountered. CHEMISTRY OF 1-4‚ DIOXANE
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Deciding on which cybersecurity program to use to protect clients’ login and password is always a gamble. OAuth 1 and OAuth 2 are the two most popular protocols used to safeguard client information. This protocol is used by major corporations including Twitter (Twitter Developers Documentation‚ n.d.) and Instagram (Authentication‚ n.d.)‚ OAuth or Open Authorization) is a program which was developed to protect client passwords and information from other third-party applications. Generally‚ O-Auth
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XXXXXXXXXXXX NETW410‚ Professor’s Name 10/6/12 Lab 4: Connecting Point A to Point B Lab Report How should an Internet connection be made for the current campus? Why did you select this option over the others? AT&T is the carrier providing service to the existing campus as well as the new campus. Examine the offerings for Internet access to select the one that should be used. (10 points) ST which is made by at&t is the most popular connector for multimode networks‚ like most buildings
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Bryan Westall NT1210 Lab 1.1 Lab 1.1: Reading Binary Exercise 1.1.1 Create a mapping similar to Figure 1-1 for the decimal number 2931 using either paper and pencil or a Word document. Exercise 1.1.2 Create a mapping similar to Figure 1-2 for the binary number 1102 using either paper and pencil or a Word document. 1102=7 (128) 27 (64) 26 (32) 25 (16) 24 (8) 23 (4) 22 (2) 21 (1) 20 1 1 0 Exercise 1.1.3 Create a mapping similar to Figure 1-2 for the binary number
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keep in mind the bend radius of the cable when using a pull box. SPLICE ENCLOSURES – Splice enclosures can take many forms depending on their location and application. Splice enclosures can be typically place in one of the two following categories. 1. Radial Splice Enclosures – radial splice enclosures have cables enter and exit the enclosure on the same side. 2. Axial Splice Enclosures – Axial splice enclosures have cables enter and exit on opposite ends of the enclosure. Enclosures designed for
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[pic] = an − bn. Theorem: If 2n + 1 is an odd prime‚ then n is a power of 2. proof: If n is a positive integer but not a power of 2‚ then n = rs where [pic]‚ [pic]and s is odd. By the preceding lemma‚ for positive integer m‚ [pic] where [pic]means "evenly divides". Substituting a = 2r‚ b = − 1‚ and m = s and using that s is odd‚ [pic] and thus [pic] Because 1 < 2r + 1 < 2n + 1‚ it follows that 2n + 1 is not prime. Therefore‚ by contraposition n must
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Unit 4 Assignment 4.3 Implementation of a Data Classification Policy Risk Assessment One the first steps in implementing an effective security plan is to periodically assess Organizational risks. Identifying and mitigating risk will help in establishing a security management structure and assigning security responsibilities. Without having an understanding of your risk you are unable to determine the proper security policies‚ procedures‚ guidelines‚ and standards to put in place to ensure adequate
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Unit 4: Science and materials in construction and the built in environment Assignment 1: Construction materials P1) Describe the basic factors in simple scientific terms that influences human comfort in the internal environment • Air temperature – Heat too hot too cold • Lighting – Too dim not enough daylight • Noise – Discomfort of hearing • Air quality – Too stuffy‚ ventilation P2) Describe how each factor is measured • Air temperature – Celsius Acceptable level 33 C • Lighting
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Assignment title Assignment 4 Economic Factors (4 of 5) Assessor Rahela Begum‚ Clive Beech‚ Prem Waatess Date issued 18th May 2015 Final deadline 1st June 2015 Duration (approx) 5 hours Qualification suite covered BTEC Extended Diploma in Business Level 3 BTEC Subsidiary Diploma in Business Level 3 Units covered Unit 1: The Business Environment Learning aims covered Learning aim 3: Know the impact of the economic environment on businesses Scenario Background: A-Z Consultancy You have recently
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