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151. After the renovation of the urea unit to enlarge its capacity, the prilling tower becomes the bottleneck in capacity increase.

152. Chloro-4-Nitropyridine is a very important intermediate, which was used for synthesizing plant-growth regulators and herbicides of pyridyl-phenyl urea and pyridyl medicines.

153. CTAB method, low pH medium with high salt method (LPHS), and urea method were used and improved to extract high-quality DNA from Lauraceae plant Cinnamomum cassia Presl. , C. zeylanicum and C.

154. The developing history, chemistry of spray polyurethane ( urea ) elastomers are simply introduced.

155. Room temperature cured fluorocarbon coating was applied as anti-corrosion coat in newly built urea prilling tower of Lianxing Chemical company, Mianyang city, Sichuan province, China.

156. Methods: The synthesis uses urea as material process includes condensation, opening loop, chloridization and nitrosation reaction.

157. Ingredients: water, Glycerol, Wasabi extract, Carbomer, Yeast extract, Tremella fuciformis extract, Bis(hydroxymethyl) Imidazolidinyl urea, Iodopropynyl butylcarbamate, Methyl paraben, Fragrance.

158. The soy sauce containing urea will become red when heated together with diacetyldioxime and phosphoric acid.

159. Ingredients: Deionized water, glycerin, stearic acid, myristic acid, lauric acid, potassium hydroxide, amino acid surfactant, ethylene glyceryl diester, imidazolidinyl urea, essence, etc.

160. The preparation technology and usage of urea peroxide are discussed.

161. A series of metal phthalocyanines was synthesized using phthalic anhydride, urea, metallic salt and ammonium molybdate as raw materials in the absence of a solvent.

162. Compositions: deionized water, roseleaf, rose essential oil, aloe extract, allantoin, sodium cocoyl isethionate, bi-imidazolidinyl urea.

163. A new type of phenolic resin adhesive for casting was prepared by condensation polymerization of furfuryl alcohol and the reaction product between phenol, phenylphenol, urea and formaldehyde.

164. The operation of prilling tower has direct influence on the appearance and intrinsic quality of the granular urea.

165. By laser cladding, the sealing face of the in outlet valve parts in methylamine pump in urea production line has been strengthened.

166. The nano-sized clubbed ferric oxide red was prepared by homogeneous precipitation method, using urea as the precipitator introduced by dripping slowly.

167. The separation and purification of linoleic acid from safflower oil via urea adduction fractionation was studied.

168. Melamine, urea and formaldehyde underwent hydroxymethylation and etherification to yield a composed resin glue of methyl-etherified hexahydroxy methylmelamine and methyl-etherified hydroxymethylurea.

169. The field experiments were carried out to investigate the effects of urea and resin coated urea on yield and economic benefit of corn planted in aeolian sandy soil and irrigated desert soil.

170. Methods of synthesizing diphenyl carbonate included transesterification, urea and carbon disulfide.

171. The base material was tailor made colloidal solution of dicyandiamide urea formaldehyde copolymer.

172. Benzoxazolone was prepared from o-aminophenol and urea and then was chloridized by hydrogen peroxide and hydrochloric acid to get 6-chlorobenzoxazolone.

173. Analyzes the effect of steam and carbon ratio to the conversion rate of urea conversion system and improve method.

173. Sentencedict.com try its best to collect and make good sentences.

174. A novel analytical method for determination of urea based on reaction - in - ducted laser beam deflection is presented.

175. This paper describes the development test of molel plate of larch plywood used urea formaldehyde resin.

176. The firming agent, coupling agent, and surfactant were screened. The optimum composition of emulsive urea - formaldehyde resin sand -consolidating agent was selected.

177. We report a case of the nevoid form of hyperkeratosis of the nipple and areola with successful treatment by urea ointment.

178. Cellulase activity using peptone and yeast powder as nitrogen source was higher than that of inorganic nitrogen source, such as urea and ammonium nitrate.

179. Monosized spherical aluminum hydroxide particles were first prepared by homogeneous precipitation using the urea method below its boiling temperature.

180. After 4-week drug withdrawal, we tested 13C-UBT again and extracted stomach mucosa for urea enzyme test, bacteriology, NO content tests in mucosa.