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211. Carbon monoxide and nitrous acid ester are synthesized through coupling reaction into diester carbonate in the presence of catalyst and at relatively low pressure and temperature.

212. Methods of preparing nanometer strontium carbonate with high purity are also reviewed.

213. The ability of the gas phase inhibitor — cyclohexylamine carbonate ( CHC ) for chemical equipment was studied.

214. In order to calcine calcium carbonate fines, the technique of high - temperature pelletization has successfully been used.

215. Stable acetic acid methanation process must form a stable pH gradient, which is the fundamental reason for the calcium carbonate precipitation.

216. AAR can be assorted two classifications: Alkali - Silica Reaction ( ASR ) and Alkali - Carbonate Reaction ( ACR ).

217. C is mainly of ferromanganese carbonate series, and ? C mineral composition of sediments in the East Sea is dominated by siderite.

218. In chemical industry , alkali is used to produce soluble glass , light and heavy sodium carbonate , etc. In metallurgy it is used as flux .

219. Eight substituted ureas herbicides were synthesized with bis(trichloromethyl) carbonate(BTC). The production structures were identified by elemental analysis and IR.

220. Content of the project: utilize CO2 resource, to set up production lines of methyl carbonate, granular dry ice powder, salicylic acid, sodium carbonate and ethylene urea etc.

221. The high-quality source rocks of the lower formation of Es_3, usually with laminated structure, are primarily composed of carbonate laminas and clay laminas with rich organic matter.

222. Some minerals, such as calcium carbonate in seashells, glow blue, as does a shovel handle in the picture above.

223. Before this alkaline lake went dry, tufa formed when a freshwater spring percolated from below and formed calcium carbonate deposits.

224. The area we debated is in infraneritic environment at the Meishucunian Age, early Cambrian Period, when deposited a suit of carbonate and phosphate.

225. Objective : To study a improved method on determination of chlorine in sodium carbonate as food additive.

226. The last mentioned dolomites predominate the other two, with the ancient carbonate rock upland of biolith origin in neighboring provinces playing the controlling role.

227. Diphenyl carbonate ( DPC ) was synthesized by decarbonylation of diphenyl oxalate ( DPO ) over Ph 4 PCl catalyst.

227. Sentencedict.com is a online sentence dictionary, on which you can find excellent sentences for a large number of words.

228. This paper is concerned with preparation method of nano - sized magnesium oxide from ammonium carbonate and chloride.

229. The main deactivation reason of catalyst in low temperature methanol synthesis is that CH 3ONa is transformed to weaker bases such as sodium formate and methyl carbonate.

230. Early Paleozoic rock are mainly carbonate , dolomite, Carboniferous - Permian coal-bearing clastic rock and a small amount of Archean crystalline metamorphic rocks and Mesozoic-Cenozoic granite acid.

231. The orthogonal experiment for ammoniating rice straw at elevated temperature was arranged in a small ammoniation oven with ammonium hydrogen carbonate as ammoniating agent.

232. Objective To observe the effects of butorphanol coordinated with lidocaine carbonate on draw reaction and newborns at epidural anesthesia for cesarean section.

233. Studies of the slope carbonate gravity current are of important significance in the studies of paleogeography and paleotectonic environment.

234. The Al - Si eutectic alloy was directly modified with rare earth carbonate, and satisfactory results were gained.

235. Ammonolysis of dimethyl carbonate(DMC) to carbamate, a more promising route for synthesis of carbamate, was reviewed in detail, especially the catalysts.

236. Using sodium carbonate and calcium oxide as cheap acid-capturer, perfume furfuryl butyrate was synthesized from furfuryl alcohol and butyryl chloride, and was characterized by GC and IR.

237. In addition, the ALH 84001 magnetites exhibit epitaxial growth relationships with the host carbonate, and are therefore unlikely to have formed within the cells of bacteria (Bradley et al. 1998).

238. Marine carbonate rocks constitute the main body of upper Paleozoic rocks of the region, with the organic carbon content corresponding to gam-ma distribution and a fairly low average value.

239. This paper studied the manufacture of reagentlevel lithium sulfate monohydrate from industry level lithium carbonate.

240. Micro - analysis demonstrated Al ( OH ) 3 crystal coating on the calcium carbonate whisker well.