查询词典 activity

The catalytic activity of this new resin catalyst in the isobutene oligomerization was measured in detail, it exhibited good catalytic activity and excellent isobutene dimerization selectivity.

在异丁烯的低聚反应中，对这种新型树脂催化剂的催化活性进行了细致的研究，磺化聚醚碸酮树脂催化剂在反应中表现出了很好的催化活性和优良的二聚选择性。

The catalytic activity of three different types of Cu 2+ exchanged zeolites (Cu ZSM 5, Cu Y, Cu M) for the NO direct decomposition, especially the effects of the preparation and reaction conditions on the catalytic activity have been studied.

NO在铜离子交换型沸石上的催化分解＊韩一帆汪仁（华东理工大学工业催化研究所，上海200237）关键词一氧化氮，催化分解，铜离子交换型沸石随着工业生产的发展和机动车辆的增加，向大气中排放的含氮氧化物的量日益增多。

At normal state, the separase hasn't activity because of its inhibitor securin. But during the transition from metaphase to anaphase, APC is activated and it discomposes the securin. Then the separse what is a protease has activity and it discompose cohesin. So the sister chromatids separate.

通常情况下分离酶受到保全素(securin/PTTG)的抑制而没有活性，当细胞从有丝分裂中期向后期转变时，APC(anaphase-promoting complex，后期促进复合体)被激活并裂解保全素，具有蛋白酶活性的分离酶裂解粘合姐妹染色单体的粘合素，姐妹染色单体分离。

In this study, we find that there are two problems when applying the techniques of discretization to obtain an approximated probability density function of the project completion time in stochastic activity networks. Namely, first, there exists neither exact data structure nor systematic scheme for the computer programming when applying the techniques of discretization; and second, error may arise from assuming independency between sub-paths in the activity network.

本研究发现在运用文献中的散式计算技术，求算随机性专案完成时间的机分配函时，存在个问题：第一，文献中既未提供明确的资结构也没有系统化的架构，足以将其转为计算机程式；第二，因为文献中的散式计算技术，皆假设随机性专案网中的各条子径彼此独，而造成明显的误差。

The implantable stimulator senses gastric electrical activity (slow waves and/or peristaltic waves) and delivers electrical stimulation to intentionally disrupt or disorganize a programmed percentage of the normal gastric activity.

此可植入刺激器检测胃电活动并发送电刺激以有意地破坏或扰乱程序设定的部分正常胃电活动。

Dr Tononi believes that the function of these slow waves is to "downscale" synapses, reducing their size, chemical activity and electrical activity—and thus the strength with which they connect their nerve cells together—all over the brain.

托诺尼博士认为这些慢波的功用是削弱突触，减小它们的尺寸、化学活动和电活动，从而在整个大脑范围内减弱神经细胞间的联系。

And IBM may exit activity of this contest mark, because concern is entered by embroil,go in litigant activity.

而IBM可能退出这个竞标活动，因为担心被牵连进诉讼活动中去。

The market information of certain period always is a kind of emersion of activity of economy of this period market and its attribute and report, it is a kind of of feature of change of development of activity of economy of this period market objective description.

一定时期的市场信息总是该时期市场经济活动及其属性的一种再现和反映，是该时期市场经济活动发展变化特征的一种客观描述。

Meanwhile the function of antioxidant defense system increased to enhance the ability for clearing free radical and antagonized the damage to organism from free radical. So the activity of GSH-Px and T-AOC enhanced. But the compensative ability was limited and the activity of GSH-Px decreased abruptly and the T-AOC was not increased further in cerebellum of chicken with encephalomalacia. This showed that it existed the exhaustion of GSH-Px in cerebellum of chicken with encephalomalacia.

在体内自由基蓄积的同时，机体抗氧化系统功能出现代偿性增强，提高自由基的清除能力，以对抗自由基对机体的损伤，表现为GSH-Px活性和T-AOC的增强，但机体的代偿能力是有限的，发病雏鸡小脑中GSH-Px活性的突然降低和T-AOC的不再增高，表明GSH-Px在发病雏鸡小脑中存在耗竭现象。

Mutation of the gARID1 binding site in the cwp1 promoter resulted in a decrease of promoter activity and mRNA levels during vegetative growth and encystation, suggesting that the gARID1 binding sites are positive cis-acting elements of the cwp1 gene promoters in both trophozoites and encysting cells. Using cotransfection assay, we also found overexpession of gARID1 can increase luciferase activity and mRNA levels, while mutation of the gARID1 binding sites of the cwp1 promoter resulted loss of this transactivation.

我们也用萤光酵素基因接上cwp1基因启动子，如果将其cwp1启动子上的gARID1结合位置突变，也可以发现萤光酵素和讯息RNA的表现有明显的下；再用cotransfection assay，可发现gARID1会使萤光酵素和讯息RNA表现明显上升，然而如果将其cwp1启动子上的gARID1结合位置突变，这种转活化则消失。

The changes of the HAF after liver injury may be related to the volume of blood loss, the intraabdominal pressure and the pneumoperitoneum duration.

肝撞击伤伴失血后肝动脉血流量的变化与失血量、气腹压力以及气腹持续时间等有密切联系。

Reneging on our commitments to the world's poor cannot be an austerity measure, she said.

放弃我们给世界上的穷国的承诺不能成为一种紧缩措施。