查询词典 hydrogen

The stability of Pt-SDB on its catalytic activity and the Pt contained in Pt-SDB have been studied during three years in isotopic exchange between tritium oxide and hydrogen.

引言在对含放射性氚水的处理过程中，基于液相水-氢同位素催化交换的工艺已开始应用。

Objective To investigate the effect of nitric oxide on hydrogen sulfide/ cystathionine-γ-lyase system in the vascular smooth muscle cells of spontaneously hypertensive rats.

目的研究一氧化氮对自发性高血压大鼠血管平滑肌细胞硫化氢(H2S)/胱硫醚-γ-裂解酶的调节作用。

You are more perfectionist then I could guess Also thank you for informing me detailed Chemical analysis for Hydrogen Per oxide. In order to quote, the correct specifications are under

苛性钠应该就是固体氢氧化钠归在28151100，是普通化工品，不用办证；过氧化氢也是普通化工品28470000，漂白粉是28281000，也不需要证的

Ultra-fine tungsten powder is prepared by hydrogen reduction from blue tungsten oxide.

以蓝钨为原料，通过氢还原制取超细钨粉末，研究了还原温度、装舟量和氢气流量对制取钨粉粒度的影响。

Based on these researches, we have developed many third-generation biosensors for some important biological species such as hydrogen peroxide, nitric oxide and glucose. These sensors can have a good reproducibility, nice stability, large linear response range, and they can be used for a reasonable period.

同时，在上述研究基础上，我们研制了一系列重复性好、线性响应范围宽、具有一定使用寿命的过氧化氢、一氧化氮、葡萄糖第三代生物传感器，且有望在临床检测中加以应用。

Intend to use the most advanced technologies in building the 20,000 t/y propylene oxide plant, hydrogen peroxide and propylene as raw materials. Process control using phase transfer catalyst reaction of propylene oxide technology, non-polluting, non-joint products.

拟采用国内先进技术建设2万吨/年环氧丙烷生产装置，以双氧水和丙烯为主要原料，生产工艺采用反应控制相转移催化丙烯氧化技术，无污染、无联产品。

In order to understand the effect of UV-B radiation on systematic water metabolism in plants, this review outlined domestic and international achievements in the last 30 years relating to the physiology and biochemistry of plants under UV-B radiation, such as root activity, transpiration rate, water use efficiency, and changes in leaf proline and soluble sugar content at different plant developmental stages. The effect of UV-B radiation on stomatal behavior and related mechanisms including a variety of signal molecule (ABA, hydrogen peroxide, nitric oxide, etc.) content and the role of signal molecules in stomatal activity were also reviewed.

为系统了解UV-B辐射对植物水分代谢的影响，本文从生理、生化两个角度概述了近30年国内外相关方面的研究成果，内容涉及UV-B辐射对植物根系活力、蒸腾速率、水分利用效率及植物不同发育期叶片脯氨酸、可溶性糖含量的影响；总结了UV-B辐射对植物气孔行为的影响及相关机理，包括植物体内ABA、H2O2、NO等信号分子含量的变化以及这些信号分子在调节气孔行为方面发挥的作用。

Department of Pediatrics,Peking University First Hospital,Beijing 100034,ChinaAbstract : AbstractObjectiveTo explore the difference in the contents of gasotransmitters nitric oxide and hydrogen sulfide (H2S) in healthy children in areas of different altitudes.

目的探讨气体信号因子一氧化氮及硫化氢(H2S)在不同海拔地区健康儿童中的含量差异。

Catalysts of this invention, applied in the reaction of selective oxidation of carbon monoxide to carbon oxide from hydrogen－rich gas mixtures, exhibited highly catalytic activity and excellent selectivity.

本发明之触媒应用在由富氢气体混合物中将一氧化碳选择性氧化成为二氧化碳反应中，显现出高催化活性及优越的选择率。

The present work focused on the effects of exogenous nitric oxide on hydrogen peroxide (H202) metabolism hi wheat Triticum aestivum L.

本研究探查了外源NO供体硝普钠(sodium nitroprusside，SNP)对小麦Triticum aestivum L。

You can snipe the second and third union leaders from this position.

您可以鹬第二和第三工会领袖从这一立场出发。

Aiming at the currently shortage of XML streams quality detecting, this paper proposes a new forecasting method of XML streams quality by least squares support vector machines, which is used the method of XML keys' vector matrix as windows, and vector product wavelet transform to multilevel decompose and refactor the XML streams series, that can fulfill real-time checking demand of XML quality, and ensure constraint, consist- ency and integrality. For even more adapting net load, it proposes a control strategy by weight and adaptive adjustment to ensure XML streams quality.

针对当前XML数据流质量检测存在的不足，提出构建XML键的矢量矩阵作为窗口，利用矢量积小波变换多级分解与重构XML数据流，再结合最小二乘支持向量机对XML数据流质量进行预测的一种方法，满足XML数据流质量重构时实时检测的要求，保证XML数据的约束性、一致性与完整性；为了更好的适应网络负载，采取加权与自适应窗口调整等调度策略充分保证XML数据流的质量检测。