Production of materials 1B – identify the industrial source of ethylene from the cracking of some of the fractions from the refining of petroleum Industrial source of ethylene (ethene) * Obtained from Crude oil – fractional distillation * Heated to high temps * Components vaporise and rise up tower where condense and collect * Lower the boiling point‚ higher up tower compound rises * Separates crude oil into fraction each with different boiling range - Catalytic Cracking
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The guitar dates back 4‚000 years. the oldest evidence of the the existence dates back to 1800 B.C. It was found in Babylonia on clay plaques. . A little later around the same time in Egypt had developed a necked instrument with marked frets wound around the neck. another was also found in a tomb and had deeper curves and was completely flat unlike older instruments that curved up to the sound board and two surfaces‚ back and front‚ were attached to each other with strips of wood that form the sides
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Competing Against Doping Sport is thought of as an activity that is governed by a set of rules and is engaged in competitively‚ while doping is the idea of using banned natural or synthetic substance for the purpose of enhancing performance in sport. In this paper I will argue against the fallacies presented on the topic of allowing doping in sports. I will argue that the notion of doping in sports is not based on sound moral reasoning and given the choice‚ not all athletes will
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steel’s microstructures. The grinding and polishing processes‚ along with a solution used to etch the surface of the steel‚ is then used to prepare the material for the micrograph. The steel was first prepared with four types of increasingly fine sandpaper and then polished with four types of increasingly fine polycrystalline diamond suspension fluid and paper. A 2% Nital solution is then used to etch the surface‚ or to make the grains of the steel more prominent. After this‚ a micrograph is used
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LECTURE 4 TOOLS OF STRATEGY ANALYSIS ANALYSIS OF THE INTERNAL ENVIRONMENT 1 Analysing resources and capabilities: the interface between strategy and the firm 2 Mario Calderini‚ Alessandra Colombelli TECHNOLOGY STRATEGY AND MARKETING 2 Resource-based view of the firm Firm is a pool of resources and capabilities that are the primary determinants of its strategy Capabilities are the “roots of competitiveness‚” source of new products‚ and foundation for strategy The greater
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The Montessori Method by Maria Montessori (1870-1952). Translated by Anne Everett George (1882-). New York: Frederick A. Stokes Company‚ 1912. [Frontispiece] DR. MONTESSORI GIVING A LESSON IN TOUCHING GEOMETRICAL INSETS [Title Page] THE MONTESSORI METHOD SCIENTIFIC PEDAGOGY AS APPLIED TO CHILD EDUCATION IN "THE CHILDREN’S HOUSES" WITH ADDITIONS AND REVISIONS BY THE AUTHOR BY MARIA MONTESSORI TRANSLATED FROM THE ITALIAN BY ANNE E. GEORGE WITH AN INTRODUCTION BY PROFESSOR HENRY
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UTAR FHSC1134 Inorganic Chemistry Trimester 3 Experiment 1 ________________________________________________________________________ Title: Investigating the Properties of Period 3 Oxides Aim: To examine the oxides of Period 3 elements and describe their structure and bonding. Introduction: Generally‚ there are oxides of metals and non-metals. Metals burn in oxygen to form basic oxides while non-metals form acidic oxides. Structurally‚ they are covalent or ionic compounds. You are to
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Montessori way of teaching mathematic is truly a wonderful and interesting way to learn the concepts of mathematics. Mathematic is very important for our daily life. Mathematic relates to numbers and numbers are around us all the time‚ so it is very important to introduce numbers to the child at very early age‚ but before you introduce numbers it is important to lay a strong foundation of practical life activities and sensorial training to the child. Practical life activities allows the child to
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6.152J/3.155J SpringTerm 2005 Lecture 12 -- Etch and Pattern Transfer I (Wet Etch) Etching and Pattern Transfer (1) OUTLINE • Basic Concepts of Etching • Wet Etching • Specific Wet Etches – Silicon – Silicon Dioxide – Aluminum • Dry (Plasma) Etch – Review of Plasmas Reading Assignment: 6.152J / 3.155J -- Spring Term 2005 Plummer‚ Chapter 10 1 Lecture 12 - Etch and Pattern Transfer I (Wet Etch) Introduction • Etching is selective removal of thin film(s) resulting in a desired
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