查询词典 TOF

There is a telephone booth in front tof the bank.

在银行前面有一个小电话亭。

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。

In the asymmetric hydrogenation of ethyl pyruvate catalyzed by 0 5% Rh/PVP TiO 2, the chiral modifier cinchonidine not only induces the enantioselectivity, but also accelerates the reaction rate greatly.

研究了辛可尼定作手性修饰剂修饰的负载型纳米铑簇合物催化剂(0 5 %Rh/PVP TiO2 )催化丙酮酸乙酯不对称氢化反应，在该反应中手性修饰剂辛可尼定不仅具有对产物生成的手性诱导作用，而且对反应具有明显加速作用；在优化反应条件后，反应的TOF和对映选择性分别可以达到 5 8 0min-1和

Two-dimensional electrophoresis (2-DE) was used to study the variation expression of proteins of cucumber cotyledonary nodes induced with PP333. The characteristics and functions of differentially expressed proteins were analyzed with MALDI-TOF-TOF/MS and Protein Data Bank.

应用双向凝胶电泳技术研究PP333处理后黄瓜离体子叶节培养物差异蛋白的表达，结合质谱分析和蛋白质数据库检索，确定所检出差异蛋白质的性质和功能。

36Cl and 36S particles were successfully separated in the TOF spectra from the GF-TOF detector for the ion with the energy of 64, 48 and 33 MeV, respectively. The comparison of the separation power of isobars between the GFTOF method and the ΔE-E method was carried out.

在不同能量（64、48和33MeV）下，利用充气飞行时间探测方法对同量异位素36S和36Cl进行鉴别，并与用传统的△E-E方法在相同能量下的鉴别结果进行比较。

3D-TOF-MRA appeared to be the best imaging test for the pathogenesis of HFS now. The major causes of HFS might be different neurovascular compressions in the REZ of the seventh cranial nerve, with real compression, entrapping or tight contact.

研究提示，3D-TOF磁共振血管成像为目前面肌痉挛病因诊断的最佳影像检查方法，HFS的主要病因为患侧面神经根部受血管压迫、包绕或与其紧密接触。

The results of FT-IR 1H-NMR indicate the structure of polyester, and the 13C-NMR analysis of three quaternary carbon showed the existing of hyperbranched struscture, MALDI-TOF MS showed the hyperbranched polyester structure, the degree of branching of the polyesters determined by 13C-NMR being 0.408. The esterification reaction kinetics followed a second-order equation and the reaction rate was controled by the concemtration of carboxyl group and hydroxyl group,-d/dt=K.

以IR、1H-NMR证实了聚酯结构的存在，13C-NMR谱图上3种季碳的特征峰有力证实了超支化分子结构的存在，MALDI-TOF MS证明了超支化聚酯的成功合成，并计算超支化聚酯的支化度为0.408；探讨并建立了超支化聚酯的缩聚反应动力学方程－d/dt=K，该缩聚反应属于二级反应，反应速率由羟基浓度和羟基浓度共同决定。

MALDI-TOF-MS, combined with high-resolution 2D-SDS-PAGE gel electrophoresis, offer microbiologists powerful tools for bacterial proteome research.

MALDI-TOF-MS结合高分辨率的二维SDS-PAGE可以分析10-12摩尔水平的蛋白，是细菌蛋白质组研究过程中必不可少的工具。

In chapter four, the REMPI-TOF-MS of Carbon disulfide is investigated in the range of 283-289nm.

第四章主要报道了二硫化碳分子在283-289nm波长范围内的共振增强多光子电离-解离过程的实验研究结果和分析结果，主要内容有：(1)实验测定了二硫化碳分子的共振增强多光子电离的TOF质一谱和分质量的REMpl谱。

The TOF-MS of Carbon disulfide is identified; the REMPI spectra of C, S, CS and CS2 are analyzed.(3) The possible mechanism of dissociation/ionization is analyzed.

3通过对实验测定的TOF质谱和分质量的REMPI谱的分析，讨论了二硫化碳分子的多光子共振电离一解离通道以及碎片的解离通道。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。