POT TENDING MACHINE PTM is the crucial equipment of large anode pre-baking workshop. It is used in the environment of high temperature‚ large current‚ strong magnetic field and HF gas. It can perform the following procedures ANODE CHANGE: Anode in the pots is changed at an interval of every 27 days since daily 1.5 cm of the anode gets consumed. A carbon block is usually 55 cm high of which only 40 cm can be used up. The main reason behind the anode consumption is the following electrolytic
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Melting pointe determination #01 Introduction: Objective To learn how to obtain an accurate melting point using a MELTING POINT APPARATUS‚ then use them to draw eutectic curve and determine the eutectic point. Melting point of a solid is the temperature at which the solid and its liquid form are in equilibrium‚ i.e.‚ molecules move back and forth between the two states at the same rate‚ so both phases remain present. If the temperature of a solid is measured carefully as the solid is heated
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The problem of the ice melting The melting of polar ice is primarily caused by the increasing amount of gas emissions‚ mainly CO2 rising into the atmosphere (global warming) Global warming is the rise in the average temperature of Earth ’s atmosphere and oceans. Since the early 20th century‚ Earth ’s mean surface temperature has increased by about 0.8 °C. Scientists are more than 90% sure that it is caused by rising amount of concentrations of greenhouse gases‚ which are produced by human activities
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Recrystallization and Melting Point of Benzoic Acid Organic Chemistry 1 10/4/12 Abstract Recrystallization was done to remove impurities from the sample. The percent recovery of benzoic acid during recrystallization is 23.02%. The difference between the pure and impure samples was observed by comparison of melting points. It was found that impure sample had a lower and wider melting point range of 120.1-122.2 (C). The pure sample melting point range was 121.3-122.5 (C). These ranges helped determine
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Freezing and Melting of Water. 10/24 Richard Landolfi Due Date:11/1 Purpose the purpose of this lab is to determine the freezing and melting temperature of water. Freezing temperature‚ the temperature at which a substance turns from a liquid to a solid‚ and melting temperature‚ the temperature at which a substance turns from a solid to a liquid. Hypothesis If the water is at a low temperature then it will freeze
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Melting Ice Caps The Arctic is global warming’s canary in the coal mine. It is a highly sensitive area which is profoundly affected by the changing climate. The average temperature in the Arctic is rising twice as fast as elsewhere in the world (nrdc.org). Because of this‚ the ice cap is getting thinner‚ melting away‚ and rupturing. Here is an example of this; the largest ice block in the Arctic‚ the Ward Hunt Ice Shelf‚ had been around for 3000 years before it started cracking in 2000 (nrdc
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mental and physical changes in the first two years of a child’s life are incredible and set the tone for future development. A child grows from a tiny little baby with crying as their only means of communication‚ to a thriving two year old who has developed their own imagination and personality with a budding vocabulary. According to the BabyCenter website‚ by the time a child is two they will know about 200 words. The real question is‚ can you understand all two hundred of them? Around three months
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WHAT I AM AFTER TEN YEARS? Ten years ago I was in my elementary days‚ a child that the only thing that wants to do is to do homework after school‚ eat‚ watch television and play with friends. A child that don’t care about the future. And if you asked me if what I want to be‚ I will simply answer you that someday I’ll be a princess I will live in the castle together with my prince charming like Cinderella. Yes‚ when we are child we like living in fantasies‚ we believe in fairy God mother that
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leaders‚ Pol Pot is known for his communist reign over Cambodia from 1975 to 1979. His regime‚ supported by several countries‚ resulted in a complete change within the country’s society. Under his rule‚ millions of people died in what Pol Pot considered to be a sacrifice for a new society (TIME‚ 1999). Pol Pot was born Kompong Thong‚ Cambodia‚ in May of 1925. Due to heavy French influence in the country at this time‚ French was incorporated into Pol Pot’s education. In 1949‚ Pol Pot began college
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The policies pursued by Pol Pot were done in order to maintain ideological purity‚ absolute control‚ and party security. So‚ did philosophers like Fanon and Marx have an undermining influence on the morals of elitists in the political realm? In response to the extreme process of purification from anything “other”‚ Fanon stated that‚ “violence is a cleansing force. It frees the native from his inferiority complex and from his despair and inaction; it makes him fearless and restores his self-respect”
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