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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Hold cleaning and inspection 1.1 GENERAL INSPECTION OF CARGO HOLD Prior to loading and after discharging‚ hold spaces must be inspected and the cargo/ballast systems should be tested. The inspection is primarily directed towards checking the ship’s integrity. The possible causes for the lack of integrity which can cause damage are the following: Damage to shell and deck plating; Damage to hatch coaming and hatch covers; Improperly closed or blanks ventilators; Leaking pipes and manhole
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more than 10 % of prophase like cells in lymphocytes‚fibroblasts and lymphoblast cell lines and this phenomenon is due to premature condensation in the early G2 phase. This premature entrance of cells into mitosis further indicated that mutated gene is involved in cell cycle regulation. (Neitzel at al.‚2002). In some patients a high percentage of prophase like cells was also observed in
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saves £40 per year and 210kg of co2 per year. There are many advantage of insulating the home some of them have been mentioned above and some others are ; the house suits the weather staying warmer in winter and cooler in summer ‚ the problems with condensation will be reduced ‚ mainly from the upper levels of the home there will be noise reduction from outside. Loft insulation reduces heat loss by the materials used for insulation preventing the movement of the heated air particles ‚ this is done by
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Thiamine-Catalyzed Benzoin Condensation I.Conclusion Benzoin was produced by reacting 2 mols of benzaldehyde with the catalyst thiamine to form a new C-C bond. A total of 2.626 grams were recovered. There was a 33% recovery of benzoin. The low percent recovery could be due to the purity of the limiting reactant‚ benzaldehyde. Upon filtration‚ the mother liquid appeared oily making it more likely that the low recovery was due to the solution ‘oiling out.’ This could be avoided in the future
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CLASS 1 AMALGAM RESTORATION INITIAL TOOTH PREPARATION Outline Form: It is the perimeter of tooth preparation in width‚ length and depth dimensions. Location: i. Occlusal surface of posterior teeth ii. Occlusal 2/3rd of Facial & Lingual surfaces of posterior teeth iii. Lingual surfaces of anterior teeth Shape: i. Mortise Shape Inverted Cone Shape Mortise Box Shape Mortise Mortise shape defines that each wall and floor is in form of a flat plane‚ meeting each other at definite line
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*How did Albert Einstein and Sir Isaac Newton earn their titles? Sir Isaac Newton (Father of Classical Physics) Newton was known as a natural philosopher during his life but his theories of motion‚ gravity‚ light‚ etc formed the cornerstone of what would become known as physics. He probably contributed more to the science than any single person before or after him. Newton’s 1687 publication of the Principia is considered to be among the most influential books in the history of science‚ laying
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THE CHEMICAL EARTH: 1. The living and nonliving components of the Earth contain mixtures ● Construct word and balanced formulae equations of chemical reactions as they are encountered Reactants → products Chemical reaction: the way atoms are joined changes‚ atoms are not created nor destroyed‚ but are rearranged Indicators: emission of light or heat‚ odour formation of a gas formation of a precipitate colour change change in state aqueous = dissolved in water‚ an aqueous solution
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AS Biology - Unit 1 ------------------------------------------------- Metabolism Metabolism is a term to describe all reaction which is taking place within a cell and is separated into two types which are * anabolic = compounds being built up * catabolic = compounds being broken down ------------------------------------------------- Water The water molecule is a molecule which is made up from 2 hydrogen atoms and 1 oxygen atom. It is bounded by 2 covalent bonds and has is polar.
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German 390 November 17‚ 2010 Kafka and Fantasy The Metamorphosis touches upon several of Freud’s dream theories. It presents the idea of dreams as a portrayal of wishes. Another one of Freud’s theories that is presented is the concept of condensation as the representation of an object or idea through an action or person in a dream or fantasy. In this story‚ the unconscious wishes of the characters are brought to light through Gregor Samsa’s transformation and visualized during the time that
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