查询词典 activity

The influence of CFC-12 content, effect of fluorination temperature and fluorinating time on the structure and hydrodesulfurization activity of the catalysts were examined systematically. The results revealed that hydrodesulfurization activity of the catalyst fluorinated by 1% CFC-12 at 623 K was obviously improved With an increase of 20%-30% as compared With that of the unfluorinated catalyst, the commercially available BY2 catalyst, and NH4F-fluorinated catalysts.

通过对0.5%~7%各种氟里昂浓度和473~773K各种温度及不同时间氟化处理的样品进行详细考察，发现在623K下由含氟里昂1%的湿空气氟化的载体制备的催化剂样品，其噻吩的加氢脱硫的活性有明显改善，相对於非氟化样品、BY-2工业催化剂以及氟化铵溶液浸渍处理的催化剂活性提高20%~30%，且非常稳定。

The application results from fluorination showed microwave heating could accelerate chemical reactions markedly. The reaction time could be shortened 50% at least than that of conventional heating. The relationship between fluorinating agents\' structure and their activity was studied systematically. In addition, an anhydrous KF with higher activity was prepared by using expansion effect of microwave heating. As we known, solvents were very important to reaction. The comprehensive study showed some less polar aromatic solvents could be used as dipolar solvents. In addition, they had better effect than dipolar solvents in some occasions, such as fluorination of chlorobenzaldehydes and chlorinated diphenyl ketones etc. The primary applications of ionic liquids were also studied which indicated reactions with ionic liquids as solvents were more efficient and simple.

研究表明，微波是一种节能高效的加热方式，在微波作用下的卤素交换氟化反应具有反应速度快、转化率高、选择性好的优点，其反应时间可较常规加热缩短50%以上；同时也系统地研究了氟化剂种类及制备方式对其反应活性的影响，并利用微波加热的膨化作用制备出了一种活性较高的KF，其活性与喷雾干燥KF相差不大；溶剂对反应具有重要的作用，在此系统地研究了强极性非质子溶剂和中等极性非质子溶剂的应用情况，发现一些中等极性的非质子溶剂如硝基芳烃和氯代芳烃类溶剂在氯代苯甲醛类化合物的氟化反应中具有比强极性非质子溶剂更好的使用效果。

The change of agglutinating activity in different temperature and pH indicated that PML had no hemagglutinating activity at 80℃. The effect of chemical modification of amino acid residues upon hemagglutination was investigated. There was a definite decrease of fluorescence intensity which corresponds to the oxidation of tryptophan.

研究了不同温度、pH和变性剂对PML凝血活性的影响和荧光光谱的变化，当温度达80℃时，活性完全丧失；pH为4—9对活性影响不大，pH低于2和pH高于12时，大黑花芸豆凝集素的凝血活性大部分丧失；高温和强碱对荧光光谱有较大影响，表明PML对高温，强碱的耐受性不强。

The highest occupied molecular orbit and the lowest unoccupied molecular orbit are calculated, and the energy gap of the two orbits determines the activity of the reagents, and yet, in an alkaline solutions for flotation, the HOMOs of the corresponding ions decide the rigidity of the reagents and therefore determine the reaction activity with different rigidity metal cations in minerals, which vary flotation performance to different minerals, and the experimental results were verified.

药剂与矿物作用的能量计算结果表明：苯氧乙酸类抑制剂与方解石和一水硬铝石作用后的能量变化均为负值，能量变化有利，可以形成稳定的吸附；而与黄铁矿作用后的能量变化为正，能量的变化是不利的，故不能形成稳定的吸附，表现出较弱的抑制作用。

If can succeed inside 10 minutes,invite other user to enter an activity, your icon will be illumed by the success, will get at the same time " Coke Cola " torch is online transfer an activity exclusive QQ cutaneous access.

假如10分钟内可以成功邀请其他用户参加活动，你的图标将被成功点亮，同时将获取「可口可乐」火炬在线传递活动专属QQ皮肤的使用权。

If the success inside 10 minutes invites other user to enter an activity, icon will be illumed, get at the same time " Coke Cola torch is online transfer an activity " QQ cutaneous access.

如果10分钟内成功邀请其他用户参加活动，图标将被点亮，同时获取&可口可乐火炬在线传递活动&QQ皮肤的使用权。

The activity that at present QQ torch illumes has been passed slanted two sides of Chinese great river, why QQ torch illumes the activity is met so get of everybody chase after hold in both hands.

现在QQ火炬点亮的活动已经传偏了中国大江两岸，为什么QQ火炬点亮活动会这么受到大家的追捧。

Part four tries to demonstrate the basic principles of activity moral education. The author proposes that the nature of activity moral education can only the"educating", but not"indoctrinating" The ultimate aim of moral education is to help students practise moral life; Practical curriculum should be the major course model of moral education.

第三部分则基于对活动教育历史和现状的巡视、对活动本质和功能的分析论证了活动道德教育的合理性，指出，作为人发展的一种积极的促进力量，道德的发展及其对个体的价值只有在活动中并通过活动才能实现。

In this investigation, TP could inhibit the ATPase's activity of P-gp in dose-dependent manner, indicating that TP exerted their modulation effect on MDR through inhibiting the ATPase activity of P-gp, and consequently interdicting the pumping function of P-gp on anti-cancer drug.

研究发现TP剂量依赖性的抑制ATPase活性，说明TP可以通过抑制P-gp糖蛋白的ATP酶活性的方式阻断P-gp糖蛋白对抗癌药物的溢出作用从而发挥其逆转MDR的作用。

Research progress of anti-tumor mechanisms of ginsenoside Rh2（G-Rh2） extracted from ginseng was expounded,and the anti-tumor activity and mechanisms of G-Rh2 were discussed on regula-ting signal access system of tumor cells,reversing abnormal differentiation and tolerance of tumor cells,reducing telomerase activity of tumor cells,strengthening immunological ability,improving anti-tumor ability ,and interdicting synthesis and metabolism of tumor cellular important components etc.

论述了从人参中提取的有效成分人参皂苷-Rh2（G-Rh2）的抗肿瘤机理的研究进展，并探讨了G-Rh2在调节肿瘤细胞信号通路系统、逆转肿瘤细胞的异常分化与耐药性、降低肿瘤细胞端粒酶活性、增强机体免疫力、提高抗肿瘤能力以及阻断肿瘤细胞某些重要成分的合成与代谢等方面的抗肿瘤活性及其作用机理。

Objective To investigate the effects of interleukin-1 β converting enzyme gene on the biologic characteristics of ovarian cancer cells.

目的 探讨白细胞介素-1 β转换酶的表达，对卵巢癌细胞生物学特性的影响。

Campylobacter: This illness is the most commonly identified cause of diarrheal illness in the world.

弯曲：这种病是最常见的原因查明腹泻病，在世界上。