查询词典 cleavage-cell

Molybdophopsphoric Acid Catalysis in the Oxidative Cleavage of Olefins by the Hydrogen Peroxide Oxidative cleavage of the double bond could be catalyzed by H_3PMo_(12)O_(40) using H_2O_2 as oxidant, various trisubstituted olefins were oxidized to aldehydes or ketones in high yields. The system was not satisfied for electron-deficient olefins such as trans-(2-nitrovinyl) benzol or chalcone. The reaction of aliphatic olefins did not occur under the same conditions.

二、磷钼酸催化过氧化氢对烯烃的氧化断裂反应用过氧化氢(30％)作为氧化剂，磷钼酸可以催化氧化碳碳双键的断裂反应，三取代的烯烃被氧化生成醛或酮，产率较高；此体系对于缺电子烯烃如查尔酮，不饱和硝基化合物的断裂反应效果较差，脂肪族烯烃在此体系下的氧化并不发生。

Embryo cells display a synchron cleavage rhythm during the cleavage stage, there is almost no gene transactivation, which is regulate and operated by the mRNAs and protein of oocyte.

卵裂阶段的胚胎细胞呈现同步化的分裂节律，鲜有基因转录活动，其发育由源自卵母细胞发生期间合成的蛋白质和mRNAs调控。

Even though at a very low temperature (-196℃), the cleavage cracking dominates the fracture process, it can not propagate straight forward through entire ligament and shows the pop-in extension in macroscopic tests and the quasi-cleavage mode in microscopic feature. It is found that the strong resistance which hinders the crack propagation is provided by three barriers: original austenite grain boundaries, bainite colony boundaries and inter-layers between bainite laths.

在－196℃的极限温度下，准解理开裂控制了整个断裂过程，但它仍然不能扩展通过整个韧带，在宏观曲线上出现POP-IN的扩展特征，微观上表现为准解理特征和韧性撕裂特征断口交替出现；同时发现阻止裂纹扩展的阻力来源于三个方面：原奥氏体晶粒边界，贝氏体团边界以及贝氏体片。

This is due to the different surface properties between a cleavage face and a crystal face. The non-saturated bonds on a crystal face must be readjusted during the growing and the late period. So the growth activation of a crystal face is low at the beginning stage. However, a cleavage face is cleaved artificially and recently. There are many non-saturated bonds on it and these non-saturated bonds can accelerate the growth rate.

其原因是：晶面不同于解理面，晶面上的悬键已在生长过程和后期过程中经过调节达到了新的平衡，所以晶面在初始时期的生长活性很低；但解理面是人为破裂形成的，其上的悬键未能达到平衡，所以解理面的生长活性是很大的，导致其生长速度非常快。

This law needs to watch the trend of the step on face of CdSe crystal cleavage only, can determine the C axis direction of CdSe crystal, namely the C axis direction that the direction with the outspread step on cleavage face is CdSe crystal, used law of X ray diffraction to undertake test and verify to the result.

此法只需观察CdSe晶体解理面上台阶的走向，便可确定CdSe晶体的C轴方向，即解理面上台阶延伸的方向为CdSe晶体的C轴方向，并采用X射线衍射法对结果进行了验证。

The positive peptide cleavage promoted by complex, CuⅡL and the negative response of CuⅡ/dien complex suggest the merely hydroxy pendant in complex have no ability to attack the peptide bond. The synergic carbonyl activation by metal coordination is essential for the cleavage of peptide bond promoted by CuⅡL.

比较相应铜配合物及二乙烯三胺铜配合物的切割性能，提示羟乙基侧臂单独难以实现相邻肽键的切割，高配位数金属中心对肽键羰基的活化与羟基的协同进攻是该类配合物切割多肽的可能机制。

One has the ability of photo-cleavage of DNA and another one as potential anti-cancer drug has the ability of oxidative cleavage of DNA. 1. As for the first system, a new ligand----Tpphz is used as the intercalator of the targeted compound. The 〓 is synthesized and characterized by elemental analysis,〓H NMR, molar conductivity, AgNO〓 titration, UV and fluorescence spectra.

核酸的光切割方面，我们选择了近年来新发现的一个配体Tpphz作为目标化合物的插入配体，合成了新颖的〓单核配合物，并通过元素分析、〓H NMR、摩尔电导测定、中心离子滴定法、紫外光谱和荧光光谱对此化合物进行了详细的表征。

Early cleavage rate,embryo quality,the rate of blastocyst,implantation and pregnant rates from these zygotes were observed,and the transferred embryos were selected according to the pronuclei orientation and early cleavage time.

根据受精卵原核构型的不同分为四组，结合构型类型及早期卵裂与否进行选择性移植，通过观察优质胚胎率、囊胚形成率、种植率和怀孕率，来评估合子原核构型和早期卵裂与胚胎发育潜力的关系。

4H was the best time of bovine oocyte activationin the 6-DAMP, and the cleavage rates and blastula rates could reach 85.1% and 26.8%. 4. IVF-100 was used in vitro fertilization, because IVF-100 was not needed to prepare usually,store conveniently, and gain a higher cleavage rates. After the oocytes have matured for 20h, theywere digested by permease and treated with suctionpipe.

由于IVF-100无需经常配制、保存方便且可以获得较高的卵裂率，所以本实验采用IVF-100为受精液，卵母细胞成熟20小时后采用透酶+口吸管消化的方法处理，获得了较好的受精效果，卵裂率可达(76.8％)。

Results As shown in Western blot analysis, the presence of microsomes did not alter the molecular weight of TM-TNF , but it did result in the cleavage of the IL-2 signal peptide from S-TNFm,suggesting that the leader sequence of TNF might differ from the signal peptide of typical secretory protein in that it seemed not to have undergone cleavage during translation in the rough-faced endoplasmic reticulum.

结果 经Western blot 分析结果表明：微粒体的存在并不改变26×103 TM-TNF的分子量，但微粒体的存在能将S-TNFm上的IL-2信号肽切除，证实TNF引导序列与一般分泌性蛋白的&信号肽&不同，在粗面内质网翻译过程中不被切除。

Finally, according to market conditions and market products this article paper analyzes the trends in the development of camera technology, and designs a color night vision camera.

最后根据市场情况和市面上产品的情况分析了摄像机技术的发展趋势，并设计了一款彩色夜视摄像机。

Only person height weeds and the fierce looks stone idles were there.

只有半人深的荒草和龇牙咧嘴的神像。