查询词典 scission

PES samples were pyrolysed at 358℃ and 590℃, the products of dogradation can be explained on the basis of chain scission. The thermal stability of PES in both inert and oxidising atmospheres has been studied by means of TGA at varies rate of temperature rise.

在正常加工温度（315~335℃）下，使用HAAKE转矩流变仪对PES进行密炼和用挤出机对PES反复挤出，发现并研究了PES的外观，粘度、分子量及力学性能的改变。

The obtained activation barrier of β-scission of 1-butene is 217 kJmol^(-1) in the reverse reaction of ethene dimerization.

反应的逆过程也就是1-丁烯在酸性分子筛表面的1-丁基烷氧化合物发生B分裂反应，计算所得相应的l-丁烯B分裂反应的能垒为217kJmol^(-1)，远高于相应的乙烯二聚反应能垒。

For radical polymeric PMMA, there were two main degradation models in N〓: the end-chain scission model and the random chain-breaking model.

采用质谱和色谱研究了PMMA和单体MMA在快速升温条件下，在不同温度和不同气氛中的热分解以及燃烧反应，并由此推测了PMMA在空气中燃烧反应的主要历程。

Results showed that the ·OH radical could not only initiate the radiation crosslinking of PDMS latex, but also accelerate the scission of PDMS molecular chain.

结果表明，·OH不仅可引发聚二甲基硅氧烷的分子间交联，也能促进其降解。

The isothermal amplification step depends not only on the replication of DNA polymerase, but also on the scission of nicking enzyme, which can generate a great number of aptamer.

我们用该方法对细胞色素P450酶系中的异喹胍羟化酶的单碱基多态性(CYP2D6*10)进行了检测，使突变型和野生型基因DNA得到了很好的区分。2。

The thermal stability and mechanical performance of PPC can be enhanced by maleic anhydride end-capping due to the depression of unzipping degradation and chain scission.

马来酸酐封端抑制了PPC解拉链式的热分解和无规链断裂热降解，PPC的热稳定性和力学性能得到提高。

DNA scission chemistry shows that the drug can cleave supercoiled DNA into open-circular form at low concentration without addition of H〓O〓 or UV irradiation.

DNA断裂化学实验结果表明，我们合成的产物可以在很低的浓度下切割pBR322 DNA。

The city road network in Urumqi city was built based on MapInfo with Arc Node data model of road network. The design of automatic chain scission and error handing about crossover point of road net work was completed.

采用Arc-Node路网数据模型，建立了基于MapInfo的乌鲁木齐市城市道路路网，利用GIS编程技术完成了路网交点的自动连接和错误处理，以及路段的自动断链技术，从而实现了交通路网拓扑结构的自动建立。

The interaction of chemical molecules and biological ones, especially sequence specific recognition and site-specific cleavage of DNA have many applications such as in DNA sequence determinations, chromosome analyses, gene therapeutics, and recombinant DNA manipulation. So it is significant to develop artificial enzymes for the scission of nucleic acid with high activity and selectivity at normal condition.

化学小分子与生物大分子的相互作用，尤其是人工核酸定位切断试剂对DNA的切断在DNA序列测定、染色体分析、基因治疗以及DNA重组方面有着广泛的用途，因此进行人工合成核酸定位切断试剂及其与DNA的相互作用的研究具有重要的理论意义和应用价值。

Results show that, under the conditions depicted in this paper, generation rates of characteristic products don't speed up with increase of samples' initial aging degrees, but are consistent with the change of bond scission rate of cellulose. When samples are in mid-end life and aged further, the generation rate decreases almost exponentially.

结果表明：在该文的试验条件下，处于老化中后期的油纸绝缘，在后期继续老化过程中特征产物的生成速率随油纸绝缘初始老化程度的增加并不呈现递增趋势，而是成近似指数递减关系，这与纤维素绝缘纸降解过程中断键速率的变化一致。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。