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151 The results show that the silica - gel is not suitable to a hygroscopic material in general conditions.

152 Cordierite powder was prepared by the polyacrylamide gel method using silica - sol as starting material.

153 The internal structure of silica has a pyramid ( tetrahedron ) unit .

154 The phenylated silica gel has been prepared by the reaction between the surface hydroxyl groups of silica gel and phenyl trichlorosilane.

155 Fructus Mume was identified with ethyl acetate - formyl acid-water(14:7:7) as developing agent in silica gel G, and using 0.1% of bromocresol green as the visualization reagent.

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156 The pure silica mesoporous molecular sieve(MCM-41) was modified on the surface by trimethylchlorosilane in polar solvent(acetone) and apolar solvent(toluene).

157 For silica fume and coal slack, the error value of measure by acid dissolution method is big and the reaction activity is lower.

158 The processing of silica sand including transferring, screening and dewatering, eliminating bridge-formation in the silo, weighing in precision, dust-prevention device etc. has been recommended.

159 The magnetic nanoparticle, silica nanoparticle and poly - cation nanoparticle were introduced briefly.

160 The sulfate may be the mixture of more than one selected from phosphogypsum, coal ash, silica slag and sodium silicoaluminate.

161 Fructose, natural flavors, citric acid, stearic acid, guar gum, magnesium stearate, silica and natural color.

162 Organic phosphorus by acetone extraction, gel column chromatography purification, HP-5 silica capillary column chromatography, flame-ray detector.

163 Indirect selective laser sintering of silica sand have been studied by experiment. The mechanism of laser sintering silica sand is obtained by observing the microstructure of sintered sample.

164 The kneading machine is the most suitable equipment for fumed silica surface treatment.

165 The three precipitates of aluminum fluoride, potassium fluosilicate and silica gel would form at low displacement, while the aluminum fluoride and silica gel precipitates at high displacement.

166 Mesoporous carbons(MCs)were prepared by an imprinting method, using mesophase pitch and nanometer colloidal silica solution as carbon precursors and pore generators, respectively.

167 Methods: (1)To separate stilbene glycoside by using silica gel column chromatography with gradient elution consisting of ethyl acetate and petroleum ether.

168 We use spreading Resistance technique to test and analyze silicon and silica base materials. This technique is more suitable to control material quality and develop new materials.

169 The success rate of porous conductive membrane preparation on fused silica capillary was greatly improved by control of voltage bias and electroosmosis effect.

170 METHODS: Alcoholic extraction, silica gel, ODS column chromatography and recrystallization were used.

171 Methods: Silica gel column chromatography and crystallization were used to obtained gardenoside from Gardenia jasminoides.

172 Other Ingredients: Rice Powder, Gelatin, Maltodextrin, Silica, Vegetable Magnesium Stearate.

173 The clarification effects of carrageenan, compound silica gel and tannin on beer wort were contrasted.

174 Arcane Magic Collection ingredients: Mica, Silica, Titanium Dioxide. May contain: Iron Oxides, Manganese Violet, Tin Oxides, Ultramarines, Ferric Ferrocyanide, Chromium Oxide.

175 Rice Husk Ash have high silica (SiO2) can be used as Raw Material in Ceramic Tiles, Replace Cement, Produce Precipitated Silica, and raw material for fertilizer and soil conditioner.

176 As the aerosol goes through the inner cylinder of the cartridge, the water vapor diffuses into the silica gel through the mesh screen.

177 In chemical engineering, silica gel can be used as catalyst or the carrier of catalyst.

178 Of pore silica gel, calcination temperature should not exceed 200 ℃.

179 Recent development of micro particle retention technology such as the mosaic system, cationic mi-cro particle technology and silica nanoparticle was briefly introduced in this paper.

180 This reaction is not in itself considered weakening since the silica network has not been broken.