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| Articles by Wendy zong |
221. A variety of different materials of The fiberglass
December 29, 2009
The fiberglass mold process begins with an object known as the plug or buck. This is an exact representation of the object to be made, and can be made from a variety of different materials. Certain types of foam are commonly used.
After the plug has been formed, it is sprayed wit...
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222. Recycling Plastic Bottles<2>
December 29, 2009
virgin resin production outpaces recycling
currently only about 3.5% of all plastics generated is recycled,
compared to 34% of paper, 22% of glass and 30% of metals.
at this time, plastics recycling only minimally reduces the amount of
virgin resou...
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223. Recycling Plastic Bottles<1>
December 29, 2009
characteristics
the term 'plastics' is used to describe a wide variety of resins or polymers
with different characteristics and uses.
polymers are long chains of molecules, a group of many units, taking its
name from the greek 'poly...
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224. The wetsuit has any special effect?
December 29, 2009
The wetsuit leading role to maintain warmth, has the different thickness and the long short sleeves design, coordinates the different diving environment. Generally thinnest from 0.5mm to...
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225. Kinds Of Scuba Diving Equipments
December 29, 2009
Wetsuits diving , or underwater swimming, can be a fun and fascinating experience if you are properly equipped with the necessary scuba diving equipment.
Having the proper scuba diving equipment will help you stay underwater longer and...
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226. LEDs are used in automotive leds
December 29, 2009
LEDs are being used with increasing frequency in automotive leds . They offer very long service life, extreme vibration resistance, and can permit considerably shallower packaging compared to most bulb-type assemblies....
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227. Residential Solar Hot Water Heater
December 29, 2009
Solar water heating or Solar Hot Water Heater is water heated by the use of solar energy. Solar heating systems are generally composed of solar thermal collectors, a fluid system to move the heat from the collecto...
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228. Ferrocene carboxylic acid is an organometallic compound
December 29, 2009
Ferrocene carboxylic acid is an organometallic compound with the formula Fe(C5H5)2. It is the prototypical metallocene, a type of organometallic chemical compound consisting of two cyclopentadieny...
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229. The useful of Anthrone
December 29, 2009
Molecular formula: C14H10O Molecular weight: 194.23 Properties: colorless needle-like crystals. Melting point 156 ?. Soluble in acetone, benzene, most organic solvents, does not produce fluorescence, slightly soluble in water. Do not dissolve in cold caustic soda solution, when heated formed an...
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230. carboxylic acid esters were performed with Bis(4-nitrophenyl) carbonate HPLC 99%
December 29, 2009
A novel beta-cyclodextrin dimer, 1,10-phenanthroline-2,9-dimethyl-bridged-bis(6-monoammonio-beta-cyclodextrin) (phenBisCD, L), was synthesized. Its zinc complex (ZnL) has been prepared, characterized, and applied as a new catalyst for diester hydrolysis. The formation constant (logK(ML)=9....
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Author: Wendy zong
