查询词典 carbon process

The reaction process in methanol solvent can be deduced from the computational results with CPCM solvent model and the supermolecular handling, namely the reaction involves four steps in the methanol solvent. The nucleophilic addition of trimethylamine to acraldehyde generates an enolate. Nucleophilic attack of the enolate on the aldehyde forms the carbon-carbon bond, followed by the proton-transfer process and the further elimination generating the product and liberating the trimethylamine catalyst.

对于CH3OH对反应体系的影响，可以综合考虑CPCM溶剂模型及超分子模型下的研究结果，即CH3OH溶剂中反应按四步进行，催化剂三甲胺首先与丙烯醛发生亲核加成，生成的两性离子中间体与甲醛发生类似于Aldol的醛醇缩合，形成碳-碳键，之后发生分子内质子转移，最后经E1cb消除得到产物，并释放催化剂三甲胺。

Study on the Crystallization Process of Labeled GL-7-ACA Acylase CA130 Complex 7β-bromoacetyl amino cephalosporanic acid (BA-7-ACA), an analog of glutaryl-7-amino cephalosporanic acid (GL-7-ACA), can inhibit and specifically alkylate GL-7-ACA acylase (CA130) from Pseudomonas sp. 130, forming a carbon-carbon bond between BA-7-ACA and the C-2 on indole ring of Trp-β4 residue of CA130.Here we reported that BA-7-ACA labeled CA130 (BA-C130) could self-catalyze the hydrolysis of BA-7-ACA during crystallization process. The hydrolysis was confirmed to be a reaction analogous to the one of GL-7-ACA by comparative MALDI-TOF (matrix-assisted laser desorption/ionization-time of flight) spectrometry analysis.

二、GL-7-AcA酰化酶CA130标记复合物的结晶过程研究溴乙酰氨基头孢烷酸（7β-bromoacetyl amino cephalosporanic acid，BA-7-ACA）作为戊二酰-7-氨基头孢烷酸（GL-7-ACA）的类似物，不仅能够抑制GL-7-ACA酰化酶CA130的活力，而且能通过在BA-7-ACA和CA130的β亚基第四位色氨酸吲哚环二位碳原子之间形成碳-碳共价键而将CA130特异的烷基化。

Nano-calcium carbonate was compared with carbon black N330,white carbon black and light calcium carbonate,at the same time,the effection of process property,process oil and different surface preparative ways on rubber properties was studied.

并将纳米碳酸钙与炭黑N330、白炭黑和轻质碳酸钙的性能进行对比，同时考查了工艺性能、操作油以及纳米碳酸钙的不同表面处理方式对胶料性能的影响。

Produced silicon carbide composite Deoxidizer near ten series of products, including specifications, is based on carbon and silicon covalent bond mainly a combination of compounds, non-oxide material in the smelting converter part and the part of low carbon steel alloy the process of substitution of steel by carbon ferrosilicon and carried out on molten steel deoxidation and carbon use.

公司生产的复合型碳化硅脱氧剂系列产品包括近十个规格，是以碳和硅为共价键为主结合而成的化合物，属非氧化物原料在转炉冶炼普碳钢部分及部分低合金钢过程中替代硅铁和增碳剂对钢水进行脱氧和增碳使用。

The results proved that ,the combination of faradic electrochemical reaction process on nickel electrode and non_faradic double layer capacitance process on carbon electrode enables the nickel positivel/carbon neg...

结果表明，镍正极的法拉第电化学反应过程和碳负极非法拉第双电层过程可以很好的结合起来，体现出超级电容的充放特性。

The isopleth's surface and gradient change trend of carbon content in carbon-accumulation field are analyzed, the temporal and lateral change pattern of carbon budget in selected peatland sites are calculated, the effect and feedback of carbon-accumulation process on CO〓 content in atmosphere is investigated in this paper.

通过典型泥炭地实测资料，分析了聚碳场内泥炭品位等值面和泥炭品位梯度变化，计算并研究了三江平原典型泥炭地碳素收支的时空格局，探讨了聚碳作用对大气二氧化碳浓度的影响与反馈机制，分析了本区泥炭地聚碳作用在全球环境变化中的地位，同时针对聚碳环境和聚碳过程对泥炭性质和品位影响，对本区泥炭资源的保护和合理利用提出了建议。

Methanol molecule participates in the proton transfer process, which takes place by a intermolecular six-membered proton-transfer transition state structure instead of the intramolecular four- membered. Consequently, the activation energy of the proton-transfer process is reduced greatly,resulting in the carbon-carbon bond formation process become the rate-determining step. The results are consistent with Aggarwal's the latest dynamics experiments.

CH3OH分子参与质子转移过程，使得原本通过四元环结构过渡态的质子转移过程通过六元环结构过渡态实现，从而极大地降低了质子转移过程的活化能，碳-碳键形成过程进而成为反应的速度控制步骤，研究结果与Aggarwal等的最新动力学研究成果相吻合。

Carbon dioxide emissions in the process of cotton-growing are around 1 kg; Carbon dioxide emissions in the production from cotton to ready clothing are about 1.5 kilograms; Carbon dioxide emissions in transportation process from cotton fields to factory, then to retail end are about 0.5 kilograms.

买件衣服也会增加碳排放？买件衣服也会增加碳排放？听起来不可思议，可这就是现实。棉花种植过程中排放的二氧化碳约为1千克；从棉花到成衣的制作环节会排放1.5千克；从棉田到工厂再到零售终端的运输过程排放的总量约为0.5千克

According to the failure cause summary of abandoned elements, it is determined the twisting and winding process of carbon fiber ply yarn and high temperature holding process of carbon composite were key steps during the preparation of carbon heating element.

在此基础上研制了碳素纤维电热体股线的捻制缠绕设备并建立其工艺计算模型，开发了碳素复合材料电热体的高温定型装备并优化了定型后电热体的脱芯工艺。

The results show that the extent of loose structure can be changed by different fiber distribution, the normal spectral emissivity and total emissivity of carbon fiber perform by adopting ply yarn process and carbon felt were higher than carbon cloth perform, and the normal spectral emissivity and total emissivity of porous C/C performs reinforced by short-cut fiber were also relatively superior to that reinforced by carbon fiber cloth.

结果表明，不同的纤维排布改变了样品的结构松散程度，多股线排布的碳素纤维预制体及碳毡的法向光谱发射率和法向总发射率均优于碳素纤维布预制体，短切纤维增强碳/碳多孔坯体的法向光谱发射率和法向总发射率优于碳布增强坯体。

The labia have now been sutured together almost completely.The drains and the Foley catheter come out at the top.

此刻阴唇已经几乎完全的缝在一起了，排除多余淤血体液的管子和Foley导管从顶端冒出来。

To get the business done, I suggest we split the difference in price.

为了做成这笔生意，我建议我们在价格上大家各让一半。