选择性

Hydrogenolysis results show that the activity and selectivity of methanol produced from synthesis gas are smaller than those from pure H2.With increasing reaction temperature,the activity of methanol synthesis increases gradually,with simultaneously speeding up of side reactions.

结果表明，合成气氢解反应活性和甲醇选择性明显低于纯氢氢解反应活性和甲醇选择性，反应温度高对提高催化剂活性有利，但同时也加速了副反应的进行。

A catalyst composition for the polymerization of propylene comprising one or more Ziegler-Natta procatalyst compositions comprising one or more transition metal compounds and one or more esters of aromatic dicarboxylic acid internal electron donors; one or more aluminum containing cocatalysts; a selectivity control agent comprising at least one silicon containing compound containing at least one C1-10 alkoxy group bonded to a silicon atom, and one or more activity limiting agent compounds comprising one or more aliphatic or cycloaliphatic carboxylic acids; alkyl-, cycloalkyl- or alkyl-ester derivatives thereof; or inertly substituted derivatives of the foregoing.

一种用于丙烯聚合的催化剂组合物，所述催化剂组合物包括：一种或多种齐格勒-纳塔主催化剂组合物，该主催化剂组合物包括一种或多种过渡金属化合物和一种或多种芳族二羧酸酯内部电子给体；一种或多种包含铝的助催化剂；选择性控制剂，该选择性控制剂包括至少一种包含硅的化合物，该化合物包括至少一种与硅原子连接的C 1-10 烷氧基；和一种或多种活性限制剂化合物，该活性限制剂包括一种或多种脂族或脂环族的单或聚羧酸类、其烷基-、环烷基-或烷基-衍生物、或上述惰性取代的衍生物。

Thus, it has many applications in various research fields. The technical principle of design and use of selective microelectrode and its progress and development prospect in plant physiological research are summarized.

该文阐述了选择性微电极测定原理，总结了选择性微电极技术在植物生理学研究中的应用进展，并展望了其发展前景。

In the presence of cobalt ion, nearly 100% selectivity to ortho-chloroanilinewas achieved over PVP-Ru/Pt colloids at 100% conversion of o-CNB, with an activity twoorders of magnitude higher than that of monometallic PVP-Ru colloid.

当在反应体系中加入钴离子时，邻氯硝基苯被高选择性地氢化为邻氯苯胺(邻氯硝基苯转化率为100%时，选择性～100％)，同时，反应的活性比PVP-Ru单金属胶体提高了约两个数量级。

The selectivity to benzene and naphthalene in liquid products showed different tendency with the deactivation of catalyst.

在973K下，液体产品中苯的选择性与萘的选择性随着催化剂的失活呈现不同的变化趋势。

The decisive processes lied on neurectomy. Though the selective posterior rhizotomy and selective peripheral neurectomy reduced muscular strength partially in the early stage, the muscular tension was also reduced, therefore the range of motion of joints was enlarged and the functions of extremities were strengthened.

能降低肌张力的决定性手术是在神经部位手术，选择性脊神经后根切断术和选择性周围神经切断术早期有部分的肌张力下降，由于降低了肌张力，使关节活动度和肢体控制能力增强，功能明显好转。

Based on extended Linsker's network developed by Wimbauer et al.,we build a model for the receptive field of toad's R3 ganglion cell and a model for the receptive field of the nLM neuron of pigeon. Computer simulations on the 'head/tail preference' property,the configurational selectivity of the R3 neuron,and the selectivity for contrast,direction,orientation and the length of the moving edges of the nLM neuron,have been made. The simulation results are consistent with the physiological experiments qualitatively.

为揭示这类神经元的信息加工原理，以Wimbauer等人提出的时延Linsker网络为基础，通过将不同的时空动态感受野线性组合，建立了蟾蜍视神经节R3类神经元和家鸽扁豆核神经元的感受野模型，并模拟了R3神经元对蠕虫样刺激物的"头/尾偏爱"特征，细胞对刺激物的构型选择性以及nLM神经元对运动边缘的反差、方向、边缘朝向和长度的选择性。

If a patient has compromised liver function, then the risks of selective and nonselective NSAID use should be carefully considered.

如果患者的肝功能不全，应慎重考虑选择性与非选择性非甾类抗炎药的风险。

Selective NSAIDs and other nonselective NSAIDs have been associated with an increased cardiovascular risk.

不管是选择性还是非选择性非甾类抗炎药，均与心血管病危险增高相关。

There was a significant association for both selective and nonselective NSAIDs with acute renal failure, but confirmatory studies are required.

选择性和非选择性NSAIDs，两种药物均与急性肾衰竭存在显著相关性，但仍需进行证实研究。晕啊，没了。我晕，没了

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。