excellent tribological behavior [21]. However‚ the results were not favorable due to the poor compatibility of POM with other materials as a result of high viscosity‚ especially with bulk materials [22]. Therefore‚ Yousef et al. (2013) develop a paraffin oil (PO) dispersion technique to obtain a uniform dispersion. The new dispersion technique summarized on adding a small amount of PO (2-3%Wt.) during the mixing process to decrease the viscosity of POM during the injection process then obtain a uniform
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Module Communication Skills Code COMS 1010 Assignment 1 Portfolio – Writing an Academic Paper ID Number Programme of Study B Eng (Hons) Civil Engineering; Year 1 (E 310) Tutor Submission Date Thursday 11 October 2012 Title of Academic Paper Construction Materials of The Future : Opportunities Offered by New Construction Materials Contents of Portfolio Page Assignment …………………………………………………………………………………. 3 Part 1 Title of Academic Paper……………………………………………………
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could escape from the propanone. It was left in a fume cupboard for a week after all the propanone had evaporated leaving behind crystals of pure paracetamol. Next you need to heat the crude paracetamol in a Thiele tube by filling the tube up with paraffin oil to the point where it just covers the entrance to the elbow tube. Then collect the paracetamol in a capillary tube and attach this to a thermometer using an elastic band. Keep an eye on your elastic band as it can snap under the heat. We made
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UNIVERSITY OF THE GAMBIA LECTURE NOTES COURSE: PRINCIPLES OF CHEMISTRY II (ORGANIC CHEMISTRY) CODE: CHM 161 2ND SEMESTER SESSION: 2012/2013 LECTURER: ANTHONY F. ADJIVON UNIT 1 INTRODUCTION Organic chemistry started as the chemistry of life‚ when that was thought to be different from the chemistry in the laboratory. Then it became the chemistry of carbon compounds‚ especially those found in coal. Now it is both. It is the chemistry of the compounds of carbon along with other elements
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Adulterated food: a serious public health problem in Bangladesh Adulteration of food with toxic chemicals harmful to health has reached an epidemic proportion in Bangladesh. The newspapers have dubbed it as the ‘silent killer’. It is very difficult to find a sector of food industry which is free of adulteration. From raw vegetable and fruits to milk and milk products to fish‚ meat and processed food–every food item is contaminated. Almost every day in the news papers‚ newer and newer methods
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Petroleum jelly‚ petrolatum‚ white petrolatum or soft paraffin‚[1] CAS number 8009-03-8‚ is a semi-solid mixture of hydrocarbons (with carbon numbers mainly higher than 25)‚[2] originally promoted as a topical ointment for its healing properties. Its folkloric medicinal value as a "cure-all" has since been limited by better scientific understanding of appropriate and inappropriate uses (see uses below). However‚ it is recognized by the U.S. Food and Drug Administration (FDA) as an approved over-the-counter
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Edexel IGCSE Chemistry Revision Notes IGCSE Chemistry Triple Award Revision Guide Topic Introduction to chemistry Atomic Structure Structure and Bonding – Ionic Bonding Structure and Bonding – Covalent and Metallic Bonding Organic Chemistry - Alkanes Organic Chemistry – Alkenes / Addition Polymerisation Organic Chemistry – Alcohols / Condensation Polymerisation Calculations Periodic Table Reactivity Series and Metal Extraction Electrolysis Energetics Acids‚ Bases‚ Salts and Neutralisation
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In this experiment‚ ethanol-wetted sawdust is dried using a vacuum tray dryer. This type of dryer is an example of an indirectly heated batch dryer (Geankoplis‚ 2003). In indirect-heat dryers‚ heat is transferred mostly by conduction‚ but heat transfer by radiation is significant when conducting surface temperatures exceed 150°C (Brown‚ 1973). There are two ways in describing the mechanism of drying of the ethanol-wetted sawdust. First is through the basis of ethanol content versus time and
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Analyst Cite this: Analyst‚ 2011‚ 136‚ 2359 www.rsc.org/analyst View Article Online / Journal Homepage / Table of Contents for this issue Dynamic Article Links < C PAPER Characterization of porcine skin as a model for human skin studies using infrared spectroscopic imaging Rong Kong and Rohit Bhargava* Downloaded by Queen Mary‚ University of London on 19/04/2013 18:44:34. Published on 21 April 2011 on http://pubs.rsc.org | doi:10.1039/C1AN15111H Received 10th February 2011‚ Accepted
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highest percentage transmission. Beetroot was used for the experiment because it was easier to see the dye after the practical was completed. Putting beetroot cylinders into different boiling tubes‚ which contained three different standard solutions of Ethanol‚ they were left for half an hour at a certain temperature to get the dye out. Once the time was up‚ the solutions was added to cuvettes and inserted into the colorimeter to test how much light was passed through the sample. Preliminary Work:
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