查询词典 active

The anti-microbial activity of active materials against Valsa mail, Fusarium oxysporum, Coniothyrium diplodieua and Aspergillus nidulans were measured in vitro. The results showed that active materials extracted using acetone.

然后以提取液为供试药剂，对苹果腐烂病菌、棉花枯萎病菌、葡萄白腐病菌、构巢曲霉病菌4种植物病原真菌进行离体活性咧定。

The explanation for this is that ethylene oligomerized in the Ni catalyst active site and the oligomers containing vinyl end group served as comonomers to in situ copolymerize with the growing polyethylene chain in the active site of titanium catalyst.

催化剂的摩尔比、Al/摩尔比和聚合温度等聚合条件对催化活性及聚合物的结构与性能有明显影响。

In order to isolate the active compounds in ethyl acetate fraction of Psoralea corylifolia L., activity-guided isolation was performed along with chromatographic techniques. Four active compounds were isolated from ethyl acetate fraction and identified by their NMR spectral data and physical-chemical properties. They are corylin and bavachin, which showed stimulating effect on osteoblastic proliferation and differentiation, isopsoralen and psoralen exhibited activity of promoting cell differentiation in some degree.

为了追踪分离补骨脂乙酸乙酯萃取物中的活性成分，本实验采用多种色谱分离技术，以活性测试为导向，结合波谱技术及理化数据，从补骨脂乙酸乙酯萃取物中分离并鉴定了4个活性化合物的化学结构，它们是具有促进细胞增殖和分化作用的补骨脂异黄酮和补骨脂二氢黄酮，对细胞分化有一定促进作用的异补骨脂素和补骨脂素。

The condensation of aromatic aldehydes with active methylene compounds like malononitrile, cyanoacetamide and ethyl cyanoacetate has been found to proceed very efficiently at room temperature giving excellent yields, but the condensation of heteroaromatic,α,β-unsaturated and aliphatic aldehydes with active methylene compounds proceeded smoothly in 50~65℃ with good yields and the reactions of aromatic, aliphatic ketones as well as p-phthalaldehyde with malononitrile also proceeded in 75~85℃ with moderate yields.

芳香醛与活泼亚甲基化合物如丙二腈、氰基乙酸乙酯、氰基乙酰胺的缩合在室温下即能顺利进行，获得了很高的收率；而对于杂环芳醛、α，β-不饱和的醛以及脂肪醛与活泼亚甲基化合物的缩合，需在50~65℃下进行，也取得了很高的收率；对于脂肪酮、芳香酮以及二元醛与丙二腈的缩合在75~85℃下也能顺利地进行，获得中等以上的收率。

The results of catalytic activity show that both Ni-B and Ni-P sample have the same kinetic equation for hydrogenation of 1, 3-cyclopentadiene to cyclopentene and the same TOF. Therefore, it can be suggested that they have the similar active site. The catalytic activity of Ni-B sample is higher than that of Ni-P sample, and it is due to the more active sites of Ni-B sample having.

催化活性测试表明，Ni-B与Ni-P催化环戊二烯加氢反应对环戊二烯具有相同的动力学方程，而且两者具有相似的氢转换频率，表明两者的活性中心本质上是相似的，类金属不同导致的电子转移方向的不同仅仅影响反应的初活性，宏观活性的差别在于两者活性中心数量的不同。

The thermodynamics quantities were calculated based on the first relaxation process. The results indicated that active enthalpy△H and active entropy △S all decreased with the increase of decrystallization extent. And, it was concluded that the relaxation process of untreated wood is for endothermic reaction and that of treated wood for exothermic reaction.

并通过计算获得了第一个松弛过程的各个热力学量，活化焓△H和活化熵△S都随着非晶化处理程度的增加而减小，未处理木材的松弛过程为吸热反应，而处理木材的松弛过程为放热反应。

It is seen that oxygen group function of additives is very remarkably in tribological characteristics, that is EP property of dihydroxy docosanoic acid without active element is very near to that of SO with active element sulfur.

双羟基廿二酸的极压性与不含氧基团的硫化烯烃十分接近，以液体石蜡为基础油，最大无卡咬负荷P〓值，前者为539N，后者为588N，再者相差49N，可以看出，氧基团的作用是十分显著的，即无活性元素的双羟基廿二酸的极压性可以十分接近于含活性元素的抗磨极压剂硫化烯烃。

This article carried on the reading related activity and the physical question design and in the solution literature foundation to the related concept connotation and the related theory has combed with summarizes, proposed based on the active junior middle school physics question and the solution principle and the method, and has carried on nine grade electrophysics based on the active question design teaching practice, has formed four typical cases: Series circuit characteristic case, electric radiator electric current thermal reaction case, Electricity review class case and practice simple circuit design case, has obtained the positive result.

本文在阅读有关活动及物理问题设计与解决的文献基础上对相关概念内涵及有关理论进行了梳理与综述，提出了基于活动的初中物理问题与解决的原则与方法，并进行了九年级物理电学基于活动的问题设计教学实践，形成了四个典型的案例：串联电路特点案例、电热器电流的热效应案例、电学复习课案例和实践活动简单电路设计案例，取得了积极的结果。

The studies on separation of antibacterial substances and the identification by GC-MS indicate that: Eleocharis Tuberoses peel contains cholesterol, organic acids, eaters and flavonoids four types of active ingredients, and 11kinds of active material.

对荸荠皮抑菌物质纯化后进行的GC-MS鉴定结果显示：荸荠皮抑菌物质中含有甾醇类、有机酸类、酯类和黄酮类4类活性成分共11种活性物质。

Results The average levels of PRL in patients with SLE was significantly higher than that in the controls(P＜0.01),and the levels of estradiot (E2)in cases in active stage was higher than that in the controls(P＜0.05).The level of testosteronein 31 cases decreased and compared with the controls,E2/T increased markedly(P＜0.01).The positive correlation was found between the levels of PRL and E2 in cases of active stage.

结果 SLE患者平均PRL水平较对照组明显升高(P＜0.01)，以活动期患者升高更为显著(P＜0.01)，同时活动期患者E2水平较对照组升高(P＜0.05)，31例患者T水平均明显下降，与对照组比较有非常显著性差异(P＜0.01)，E2/T显著升高，血清PRL水平与活动期患者E2水平呈正相关。

Foods high in this vitamin include oily fish such as salmon, tuna and, and fish liver oils.

维生素D含量高的食物包括诸如大麻哈鱼、金枪鱼和鲭鱼之类的油鱼以及鱼肝油。

We need you to cosign our public letter demanding that press intimidation cease immediately, and that all charges be dropped.

我们需要您cosign我们的公共信，要求记者立即停止恐吓，并要求所有收费下降。