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The effects of carbon source and C/N ratio on denitrification of aerobic denitrifier were investigated in the batch culture under aerobic environment.

利用间歇培养装置研究了好氧条件下丁二酸盐、乙酸盐和苹果酸盐3种不同碳源对好氧反硝化细菌X31脱氮性能的影响,并就不同碳氮比条件下菌株X31的反硝化能力展开了研究。

FGD gypsum further into α-form calcium sulfate hemihydrate by heating in an aqueous solution consisting of some alkail earth metal salts and sulfuric acid or chlorhydric acid at the atmospheric pressure has been studied in this subject.

FGD残渣在碱土金属盐类的盐溶液中,在丁二酸、丙三醇等结晶改良剂的作用下,与大气压下加热脱水生成α半水石膏。

SCE. The peak height is directly proportional to the concentration of maleic acid over a range of 0.07~50μg/ml.

允许共存顺式与反式丁烯二酸的浓度比为1∶250.20次测量的相对标准偏差为1.1%。

Monoethyl succinate is an important organic intermediate and its derivatives can be applied in many fields.

丁二酸单乙酯是一种重要的有机中间体,它的衍生物应用广泛但研究报道尚不多见。

The influence of microwave radiation on Ullmann reaction has been investigated by three Ullmann reactions, including triphenylamine formed by treating the diphenylamine with bromobenzene or Chlorobenzene which substitutes Iodobenzene; 4,4\'-dimethyltriphenylamine formed by treating 4,4\'-dimethyldiphenylamine with bromobenzene which substitutes Iodobenzene; 4,4\',4-trinitrotriphenylamine formed by treating 4-chloronitrobenzene with p-nitroaniline in this paper.

实验表明,在微波辐射条件下,顺式比反式迈克尔反应活性高;若在丁烯二酸的双键上引入甲基后,降低了进行迈克尔加成反应的活性;引入酯基对双键的影响比腈基有利于进行迈克尔反应,丙烯酸甲酯较丙烯腈的迈克尔反应活性高。

In the forth part, the heterotactic enthalpic pairwise interaction coefficients between amino acids and butanediol isomers (1,3-butanediol, 1,4-butanediol and 2,3-butanediol) at 298.15K and 310.15K are discussed.

第五部分:采用密度泛函理论等方法研究了甘氨酸分子分别与丁二醇的三种异构体分子以1:1的比例形成的氢键络合物,从B3LYP6-31G到6-31 G基组水平进行了优化,利用结合能数据讨论了焓对作用系数的差别。

COD removal for succinic acid degradation was at the range of 54.4~98.3% for different catalysts in 30 min.

催化剂在30 min内对丁二酸降解的COD去除率为54.4~98.3%。

At last,in order to lighten the electrophoretic particles,0.2 g of the succinic acid modified SiO_2 particles were dispersed at 90 ℃ in 50 mL xylene solution dissolving 0.1 g polyethene,cooled and kept for 12 h,and then the particles were encapsuled by PE by means of centrifugal sedimentation at(10 000) r/min.

最后,为降低电泳颗粒密度,将0.2 g经丁二酸改性的S iO2颗粒,于90℃时加入已溶解了0.1 g 聚乙烯的50 mL二甲苯中,冷却静置12 h后,以10 000 r/m in的速度离心,使PE沉积包覆于电泳颗粒表面。

Results of the FTIR spectra indicate that the mercaptosuccinic acid chains are assembled on the gold cores via the Au-S bond.

傅里叶变换红外光谱仪结果表明,巯基丁二酸与金形成了Au—S键,并得到了Auxy形式的MPC。

The first order kinetic models based on subsection were setup to characterize the catalytic wet oxidation of succinic acid.

建立了丁二酸催化湿式氧化的一级分段动力学模型。

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Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

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Chapter Three: Type classification of DE structure in Sino-Tibetan languages.

第三章汉藏语&的&字结构的类型划分。