查询词典 hydrogen

Sterol is a kind of substance of full cyclopentane hydrogen skeleton, and exists in the nature in free form and binding form.

甾醇是环戊烷全氢匪为骨架的一种物质，在自然界中以游离态和结合形式存在。

3 Recently, we reported an efficient tin-free version of this reaction involving thiophenol for the preparation of cyclopentane derivatives through a 1,5-hydrogen transfer/cyclization sequence [Eq.(1); AIBN=azobisisobutyronitrile].

最近，我们报道了高效的、不使用锡试剂而使用苯硫酚的反应，这个反应是通过1，5-氢转移/环化步骤制备环戊烷衍生物的[化学反应式(1)；AIBN=偶氮二异丁腈][4]。

Whereas the tin hydride is used, for preparing functional fivemembered rings ,to induced alkenyl radical translocation/ cyclization process ——oxidaton process by selective activation of a C H bond——developed by Curran et al., thiophenol, non-tin chemical, is used in this new synthetic method for preparing cyclopentane derivatives through a 1,5-hydrogen transfer/cyclization sequenceEq.

在这些目标中，发展无毒、环保试剂实施有效的自由基反应是一具有挑战性的目标。Curran等发明了用氢化锡介导的自由基易位/环化过程是一种通过C H键的选择性氧化制备功能五元环的高效的方法。

The culture of rat fibroblasts of HO -1 gene knocking shows, it has a high sensitivity to hemachrome and hydrogen peroxide mediated cytotoxin.

HO一1催化血红素降解释放的CO，可能是HO一1起血管保护作用的重要传递介质。

For blood or urine stains, you can try dabbing at the spots with hydrogen peroxide and a clean white towel.

血液或尿渍，您可以尝试在景点dabbing与过氧化氢和一个干净的白色毛巾。

According to Dalton's law of partial pressures,the principle of experiment "Determination of the ideal gas constant R ",the volume and pressure of hydrogen produced in the experiment were analyzed and discussed.

从道尔顿分压定律出发，对教学实验"理想气体常数R 的测定"中产生的氢气的体积、分压和该实验的原理进行了详细的分析和讨论。

This is ideal for Hydrogen-alpha filter use such as with Daystar models.

这是理想的氢-阿尔法过滤器的使用，如与daystar模式。

To study the applicable prospect of suicide gene on tumor therapy in clinic,we cloned the gene of D-amino acid oxidase and the gene of yeast cytosine deaminase.We hope to establish the transgenic mices of DAAO gene and YCD gene,and the two transgenic strain mices are valuable animal system for studying the biological characteristic of DAAO gene and YCD gene ,for studing the killing activity of DAAO/D-Ala and YCD/5-FC gene therapy systems on tumor.The D-amino acid oxidase gene derived from R.gracilis and it could oxidize D-amino acids. Hydrogen peroxide(H2O2) is a reactive oxygen species generated in the deamination of D-Ala catalyzed by DAAO.

为了探讨自杀基因在临床肿瘤治疗中的应用前景，建立自杀基因肿瘤治疗评价的动物模型，我们克隆了D-氨基酸氧化酶(D-amino acid oxidase，DAAO)基因和酵母菌胞嘧啶脱氨酶(yeast cytosine deaminase，YCD)基因，希望建立DAAO基因及YCD基因转基因小鼠，为研究DAAO及YCD基因的生物学特性、开发和评价DAAO／D-Ala及YCD／5-FC自杀基因系统进行肿瘤治疗建立良好的实验动物模型。

The blend has following properties with 10 parts compatibilizer. The tensile intensity and elongation at break reach 35.66MPa and 23.58%, respectively, improving by 26.6% and 65.7% respectively compared with 0 part compatibilizer; The characteristic absorption peak of carbonyl at 1725～1800cm-1 disappear and the characteristic absorption peak of hydroxide at 3438～3440cm-1 increase induce the formation of hydrogen bond; The decalescence peak of blend increase by 2℃compared with the blend containing 0 part compatibilizer near 100℃; Lignin can be dispersed homogeneously to avoid reuniting of lignin particle.

2当共混材料中增容剂含量为10份时，共混材料表现出如下特性：拉伸强度和断裂伸长率分别达到35.66MPa及23.58%，较未加增容剂分别提高了26.6%和65.7%；从1725～1800cm-1范围内羰基特征吸收峰接近消失以及3438～3440cm-1范围内的羟基波数的增加暗示了共混材料中氢键缔合的发生；共混物在100℃附近的吸热峰较未加增容剂时降低了近2℃，相容性得到了提高；木质素在基体中进一步分散，结晶度增加，从而阻止木质素的团聚，增加了两相的相容性。

Is suitable in the PSA project system hydrogen, the converted gas decarbonization, the CO2 recycling and so on

适用 于PSA工程的制氢、变换气脱碳、CO2回收等，其特点是气体分离系数大，产品纯度高，使用寿命长。

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。