in size or expand on absorbing moisture and decrease in size or shrink on drying. Shrinkage on account of drying out of moisture contents in building materials is one of the main factors responsible for cracks in the buildings. Shrinkage cracks normally appear in weak-sections of the masonry such as door‚ window openings‚ staircase wall etc. such cracks are uniformly and regularly placed. The formation of shrinkage cracks in masonry depends upon the type of material used in the masonry and the strength
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Chronic Consumption of Ethanol Alcohol and Neurological Dysfunction Ethanol Alcohol‚ commonly known as Alcohol is the primary mood altering drug used in the United States of America. When alcohol is consumed it is absorbed unaltered by the stomach and the small intestines. Then the ethanol molecules are distributed evenly to all of the tissues and fluids of the body. The alcohol present in the bloodstream is metabolized by the liver through three pathways. The major pathway involves an enzyme
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Consequences of greenhouse-effect temperature rises Predicting the consequences of global warming is one of the most difficult tasks for the world’s climate researchers. This is because the natural processes that cause rain‚ hail and snow storms‚ increases in sea level and other expected effects of global warming are dependent on many different factors. It is also difficult to predict the size of the emissions of greenhouse gases in the coming decades‚ as this is determined to a great extent by
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Shrinkage is the contraction in the dimension of the fabric due to usage. These are the reasons for shrinkage: • In case of a fabric‚ the warp yarns are under much strain due to interlacement than the weft yarns. Hence when a fabric is allowed to shrink‚ the warp yarn shrinkage will be more than weft yarns. • To overcome this fabric is extended in widthwise to some extent in the stenter machine during the finishing process. Then it is subjected to the preshrink process. Various mechanical
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“Ammonia Treatment in Textile Processing” Before Studding “Ammonia Treatment” we have to know about the Pretreatments in textile processing…. Why we do Pre-Treatments? Pretreatment is the heart of processing of textile. Grey cloth after weaving is quite unattractive and contains numerous natural as well as added impurities which hinder the successful carrying out of subsequent step like dyeing‚ printing and finishing. What are Pre-Treatments? In Pretreatment‚ all
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at the end of each year. They come up with a number that represents the total amount of products that were lost‚ damaged‚ or stolen. This number is called the shrinkage rate. This number has been slowly getting smaller and smaller across the U.S each year‚ but large retail stores like Wal-Mart are losing 3 billion a year in their shrinkage rate. In 2011‚
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durability and impermeability of concrete is increased with decrease in w/c ratio‚ provided the concrete is workable. Shrinkage is increased with greater w/c ratio. • Cement content: With increase in cement content‚ w/c ratio is decreased and consequently‚ strength‚ elasticity‚ durability and permeability is increased. More cement improves workability but it also increases shrinkage which is undesirable. • Temperature: Rate of setting and hardening of concrete is high at higher temperatures. If temperature
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calculated density of the composite‚ viz. 7.8 gms cm-3 [11]. It was found that the pellets were sintered to about 95% of theoretical density. The shrinkage in diameter calculated for the pellet before and after shrinkage was about 9.8%. This shrinkage value is comparable to most commercial LTCC tapes and far higher than that of GDC-Bi2O3 pellet which showed 3% shrinkage when fired at 1000 °C. Figure 2 presents Nyquist plot of the sample measured at different operating temperatures from 500 – 700
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many biomes. It is separated into two types which are the arctic and alpine. The following information was gathered from a few websites which include Blue Planet Biome‚ National Geographic-Tundra‚ and UCMP.Berkely- The Tundra Biome. The Tundra biome is the coldest and harshest biomes in the world. The Tundra ecosystem is treeless and can be found in the arctic in the northern hemisphere an example would be the North Pole and
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to support the preservation of America’s Arctic National Wildlife Refuge in order to protect "America’s last truly great wilderness" from oil drilling. He builds his argument by starting off with a first-hand experience‚ pointing out other sources of support‚ explaining the harmful effects on the native people‚ and gives the audience a clear list of benefits for preserving the refuge. Carter begins with an anecdote of his camping experience in the Arctic Refuge. He uses grand imagery such as "This
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