查询词典 proton

Therefore,it is necessary to develop new routes to prepare anion exchange membranes without such chloromethylation process.As for cation exchange membranes, mostly-perfluorinated sulfonic acid ionomers,such as Nafion~ series,have been wildly used due to their high proton conductivity and substantial durability.

对于强碱性的阴离子交换膜的制备，由于传统路线中的卤甲基化步骤中不可避免的采用强致癌物质二氯甲醚，因此无论是从经济成本还是环境保护方面，开发不采用氯甲基化步骤的阴离子交换膜制备方法是目前的一个迫切要求。

The membrane electrode assembly and the bipolar plate were the key components of proton exchange membrane fuel cell .

膜电极和双极板是质子交换膜燃料电池的关键组件。

And the major subject in designing an intense-beam proton linac is to control beam losses to a very low level.

我国科学家早已注意到这一新动向，结合我国核电发展需求的现实，提出了洁净核能系统开发研究的新课题。

Overall, this dissertation makes the following initiatives: The beam chopper remains one of the key and difficult points in all of the proposed intense beam proton linacs in the world.

综上所述，本论文体现了如下创新之处：用于强流质子直线加速器的束流切割器，在国际上同类加速器的设计中，目前仍是一个重点和难点。

Chapter 2: Four sulfur-containing D-glucosamine metal complexes have been synthesized M-GLUS,M = Co, Cu, Ni, Zn）and characterized by elementary analysis, molar conductance, and proton nuclear magnetic resonance.

第二章：合成了四种含硫氨基葡萄糖金属配合物（M-GLUS，M = Co， Cu， Ni， Zn），利用元素分析，摩尔电导，核磁共振氢谱进行了结构表征，结果表明含硫配体与这四种二价金属离子均形成了2：1型非电解质配合物。

Starting from an incident solar proton beam at the top of the atmosphere, following with its interaction in atmosphere and propagating of the produced muons down to the underground detector, a full simulation was carried out in order to esti...

为了估计到达大气顶部太阳质子的能量和流强上限，本文针对该文章的实验条件，进行了从大气顶部太阳质子束到探测器测到次级μ子的全部过程的模拟。

8 Mol/L. The electrode process and reaction mechanism of ACOP were investigated. The results show that the proton numbers is 2 and electron transfer number n is 2. The method has been used to determine the content of ACOP in tablets with the recovery between 98.2%~105.0% by means of standard addition method. Compare with ultraviolet spectrometry, the method is not remarkable difference.

9949；检测限为8。 0×10-8 mol/L。探讨了ACOP在GCE/Nafion-MWCNTs上的电极过程和反应机理，测得在本体系中参与反应的质子数和电子转移数均为2，对ACOP药片进行了测定，回收率为98.2%~105.0%，与紫外分光光度法比较，无显著差异。

The microstructures of composite membranes were studied by XRD and SEM. The thermal stabilities, methanol permeabilities and proton conductivities were investigated. Water uptakes and dimensional stabilities were also studied. The results indicate that amorphous zirconium phosphates are formed in the composite membrane, and have a good combination with the organic phase.

采用扫描电镜观察复合膜的断面形貌；采用热重分析仪研究复合膜的热稳定性；采用气相色谱测量并计算了复合膜的阻醇性；采用交流阻抗法测量复合膜的质子传导率；同时还研究复合膜的吸水率、尺寸稳定性。

It was found that the effect of hydrogen bonds played an important role in increasing the stabilities of 2,6-dithiopurine hydrated tautomers and lowering the activation energies of proton transfer.

计算结果还表明，氢键作用在增大2，6-二巯基嘌呤氢键一水合物稳定性、降低质子转移异构化反应活化能等方面起着重要的作用。

Furthermore, proton singlets of Fmoc group were treated as internal standard because of their station in both starting material and product.

用HR／MAS NMR分析技术不仅跟踪优化了固相羟基氨基酸的糖基化反应条件，而且选择固载在树脂上的糖基化Nα-Fmoc保护羟基氨基酸〓H NMR中最低场，且分辨好的Fmoc保护基信号做为内标，糖上乙酰基的积分面积为标准直接定量了键合在Tenta Gel S NH〓树脂上氨基酸甙化的产率。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。