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151. When urea is added to soils IT is converted rapidly to ammonium carbonate by hydrolysis, a reaction which is activated by enzyme urea se.

152. Graft polymerization of acrylic acid onto maize starch using ceric ammonium nitrate, ammonium persulfate and ammonium persulfate sodium bisulfate as initiators is studied.

153. The results indicated that after mixing the two reactants together, pentyl ammonium stearate was created and it formed acid-salt structure with the stearic acid remained.

154. The expressed enzyme was purified by means of cell lysis, PEI precipitation, heat denaturation, salting out with ammonium sulfate and CM Sepharose fast flow chromatography.

155. The graft copolymerization of acrylamide onto xanthan gum initiated by ammonium persulfate in aqueous medium was studied under a nitrogen atmosphere.

156. Methods:The influence of ammonium sulfate and glucose on plasmid stability and penicillin G acylase activity were conducted in flask shakes and a 5L fermentor.

157. The percentage of nitrogen in ammonium nitrate can be determined by titrimetry with standard NaOH solution.

158. Possibility of emulsive bases taking as sensitizers of ammonium nitrate explosive instead of TNT,[sentencedict.com] composition of explosives and technology were studied in this paper.

159. Ultrafine alumina powders were prepared by pyrolysis of the aluminium precursor powders obtained by precipitation method using aluminium nitrate and ammonium carbonate as raw materials.

160. Objective To study general toxicity, hereditary toxicity and mutagenicity of quaternary ammonium compound detergent.

161. A lot of decomposition products are formed, such as dioxoimidazole, dioxopiperazine, acid anhydride, cyanuric acid, ammonium, four, five and six-membered ring lactam etc.

162. A novel bi - pyridine quaternary ammonium salt cationic surfactants was prepared by acrylic modified rosin.

163. To provide basic data for application of ammonium phosphomolybdate, it is characterised by means of XRD, IR, DSC and TG.

164. Oxymyoglobin was partly oxidated into the met - myoglobin in the process of the ammonium sulfate salting - out.

165. The activities of DASA reductase were increased by ammonium nutrition , but not significantly.

166. The selective depression of ammonium fluorosilicate on aegirite, an iron-containing silicate gangue mineral, in hematite flotation using sodium oleate collector was investigated.

167. The preliminary study has been conducted to the preparation method and the performance of Ammonium carbonate capsule, and received the good effect.

168. Then the new cage-like vinyl silsesquioxanes(VS) were synthesized by the reaction of vinyl-tetra-coordinate silicon with tetraethyl orthosilicate in the condition of tetramethyl ammonium hydroxide.

169. The results indicate that ammonium ferric sulfate is possessed of good catalysis.

170. About six tons of ammonium sulphate daily extraction, sale as a by - product .

171. The role of liquid sealing in chemical industry is expounded. Then the modification and operation to some equipment of ammonium phosphate and sulfuric acid in the company are introduced.

171. Sentencedict.com is a sentence dictionary, on which you can find good sentences for a large number of words.

172. The primary factors of influence on gelatin time and gluing strength are ammonium persulfate, temperature, cupric chloride and ammonia water.

173. The extractive magnesium sulfate reacts with ammonium carbonate, the high - purity and activity magnesia is obtained.

174. Annual sales: steel, Crude Benzol, Coke, tar, ammonium sulfate, and so on.

175. After reduction , manganese is extracted by sulfuric acid and high purity manganese carbonate is obtained after impurity removal from the solution and reaction with ammonium carbonate.

176. Elaborate the action of product cost and the way that reduce cost of saltpetre ammonium product.

177. Hexadecyl octyl dimethyl ammonium bromide and hexadecyl decyl dimethyl ammonitim bromide were synthesized.

178. Formed as a sublimate (mixed with ammonium hydrogen carbonate) when calcium carbonate and ammonium sulfate (or chloride) are heated together.

179. Results:The DDDs of the antiallergic drugs increased year by year, And the DDDs and consumption sum of compound ammonium glycyrrhizinate type and tranilast always kept in the lead.

180. Prompted by their own intelligence information, the police seized more than 5, 750 kilograms of ammonium nitrate, used in homemade bombs.