Baer’s Comb Sorter Diagram Fibre Length: The "length" of cotton fibres is a property of commercial value as the price is generally based on this character. To some extent it is true‚ as other factors being equal‚ longer cottons give better spinning performance than shorter ones. But the length of a cotton is an indefinite quantity‚ as the fibres‚ even in a small random bunch of a cotton‚ vary enormously in length. Following are the various measures of length in use in different countries Mean length:
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History The development of spandex was started during World War II. At this time‚ chemists took on the challenge of developing synthetic replacements for rubber. Two primary motivating factors prompted their research. First‚ the war effort required most of the available rubber for building equipment. Second‚ the price of rubber was unstable and it fluctuated frequently. Developing an alternative to rubber could solve both of these problems. At first‚ their goal was to develop a durable elastic
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Face the Fats According to the American Heart Association‚ there are four different kinds of fats. These fats are necessary for the body to give it energy‚ support cell growth‚ absorb nutrients‚ and produce important hormones. Each of these fats has different chemical structures and physical properties. The bad fats tend to have a more solid structure when at room temperature and the good fats are more like a liquid. So‚ what are the good fats and the bad fats? Good fats such as‚ monounsaturated
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PHILIPPINE ABACA INDUSTRY History Abaca‚ the country’s premier fiber and known worldwide as Manila hemp‚ has come a long way from its humble beginning as raw material for our ancestors’ coarse and stiff clothing as well as footwear. While abaca is still being used for these purposes‚ its application has expanded to sophisticated industrial uses. It is now a preferred material in the production of pulp for specialty papers like tea bags‚ meat/sausage casings‚ cigarette paper‚ filter papers
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in liquid samples or headspace. SPME is compatible with analyte separation/detection by gas chromatography or HPLC‚ and provides linear results for wide concentrations of analytes. By controlling the polarity and thickness of the coating on the fiber‚ maintaining consistent sampling time‚ and adjusting several other extraction parameters‚ an analyst can ensure highly consistent‚ quantifiable results from low concentrations of analytes. Analyses of volatile or semivolatile organic environmental
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delay (DGD).‚ the time difference in the group delays between two orthogonal polarized modes.‚ which causes pulse spreading in digital systems and distortions in analogue systems.. In ideal circular symmetric fibers.‚ the two polarization modes propagate with the same velocity.. However‚ real fibers cannot be perfectly circular and could undergo local stresses.; consequently.‚ the propagating ray has split into two polarization modes (Figure 2-4)[68]. Figure (2-4):"DGD due to the two polarization modes
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distribution of muscle fiber type and performance. How might exercise training modify or change a person’s fiber-type distribution? Skeletal muscles contain multiple fiber types that are distinguished by their different myosin ATPase speed‚ and the development of their SR. The two main fiber types are type I and type II fibers. Type II fibers have a faster ATPase and a more developed SR than type I fibers. Type II fibers are also part of a larger motor unit‚ allowing for more fibers to contract at once
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Elsevier Ltd. All rights reserved. Article history: Received 27 December 2011 Received in revised form 7 May 2012 Accepted 3 July 2012 Available online 24 July 2012 Keywords: A. Polymer–matrix composites (PMCs) B. Mechanical properties Natural fibers 1. Introduction Green composites deriving from renewable resources bring very promising potential to provide benefits to companies‚ natural environment and end-customers due to dwindling petroleum resources. The shift to more sustainable constructions
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Endomysium •Covers each muscle fiber and ties fibers together •Contains capillaries and nerve tissue 3. Describe a sarcomere. Where is it found? What does it do? How is it “defined” within the muscle? What is it made of? Sarcomeres •Smallest functional unit of skeletal muscle fiber •Formed by repeating myofilament arrangements •Each myofibril has about 10‚000 sarcomeres •Thick and thin filament arrangements are what produce the striated appearance of the fiber •Overlapping filaments define
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Chem 107 HW 8 (16‚ 26‚ 32‚ 38) 16. Determine how much energy is released or required for the reaction shown. Is this reaction exothermic or endothermic? CO2 + 2 H2O → CH4 + 2 O2 This reaction is endothermic 26. Why can’t we digest fiber? We cannot digest fiber because we lack the enzyme capable of breaking the sugar linkages in cellulose. 32. Why is unsaturated fat considered much healthier than saturated or trans fat? Unsaturated fat provides benefits of fat in the diet without the risk of
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