链引发

链引发主要由·OH完成，其它如热解等也可产生活性极强的自由基。

The chain initiation was accomplished by-OH , the pyrolysis can also produce some radicals of high activity .

MIP技术反应过程中裂化反应链引发的机理研究

Study on the chain initiation of catalytic cracking reaction in MIP PROCESS

热裂解链引发-终止反应的计算CH键的断裂-形成

Calculation for Chain Initiation-Termination Reactions in Thermal Cracking : Cleavage-Formation of C & H Bond

结果表明，链引发和链终止反应与嵌段链活性中心的形态有关，只有嵌段链活性中心的低活性形态才能同αMS发生引发反应，而高活性形态则与αMS发生链终止反应。

It was found that the chain initiation and termination reactions were dependent on the species of the block chain active centres and only the lower active species . could initiate α es while the higher active species were terminated rapidly by α MS.

本文考察了Fe（naph）2-Al（iBu）3卤化物体系催化丁二烯聚合的链引发、链增长和链终止反应。

Initiation , propagation and termination of the polymerization of butadiene catalyzed by Fe ( naph ) _2 Al ( I Bu ) _3 Halides system have been investigated .

经过动力学分析，蒙脱土参与了自由基聚合的链引发过程。

By kinetic analysis , OMMT participates the radical initiation reaction of the chain .

链引发是由偶氮二异丁腈，过氧化苯甲酰或过氧酯分解生成的自由基所引起。

Initiation is caused by radicals produced from azobisisobutyronitrile , benzoyl peroxide or perester decomposition .

链引发阶段单分子反应与双分子反应选择性的比率为4.2∶0.9。

The ratio of the selectivity of monomolecular reactions to bimolecular reactions was 4.2 ∶ 0.9 during the chain initiation period .

负离子双锂引发剂体系的研究Ⅰ.从萘锂-锂粉可逆平衡体系合成双锂短链引发剂及其机理的探讨

Study on anionic dilithium initiator system ⅰ . Synthesis and synthetic mechanism of dilithium initiator in reversible balance system of naphthalene lithium and lithium powder

急需重新理解工业设计的源与元&由产业链引发的思考

It Is Urgent to Re-understand the " Origin " and " Primacy " of " Industry Design " - Thoughts Caused by " Industry Chain "

提出了交联体系中复合乳胶粒子的简单演化模型，即链引发→簇生成→簇增长→簇融合→成核。

The simple evolutionary pattern of compound latexes in the cross-linking system was introduced , i.e. chain initiation → cluster generation → cluster increase → cluster interfusion → core ;

在聚合反应的链引发反应中，由于反应物中都含有不饱和键，所以其活性较高，往往因光、热等因素的作用而引发聚合。

In the chain initiation , because of containing unsaturated bonds in all the reactants , their activity are higher and often reacted by light , heat and other factors .

进行以FeCl3＿Al（i＿Bu）3＿phen催化剂体系催化丁二烯聚合反应，研究了丁二烯聚合反应的链引发、链增长过程及影响引发速率的因素。

The polymerization dynamics of butadiene including chain initiation , chain growth and chain transfer were studied in the paper , under the catalytic system of FeCl_3_Al ( i_Bu ) _3_phen .

本文处理了双宫能团引发剂的两个活性基具有不同链引发反应速度常数时，所生成的活性聚合物的分子量分布问题。

This paper deals with the molecular weight distribution of the living polymer generated by bi-functional initiator of which the initiation rate constants of both reactive groups are different in each other .

对于链引发反应，阻聚剂主要影响的是链引发反应的诱导期长短和引发反应进行的难易程度，具体表现在体系的热稳定性和反应动力学上。

In chain initiation reaction , the inhibitor primarily effects the length of the induction period and the level of difficulty to react . The specific performance are the thermal stability and reaction kinetics of the system .

研究结果表明，MIP技术反应过程中，催化循环链的引发主要是原料中烷烃质子化，产生五配位正碳离子，使链反应遵循单分子的质子化裂化反应机理。

The results indicated that the main initiating event was the generation of a penta-coordinated carbonium ion by the protonation of paraffin in the feedstock , and the following reactions took place via monomolecular mechanism .

RAGs的编码产物RAG-1和RAG-2的复合物能特异性识别Ig胚系基因中V、DH、J基因片段两侧的重组信号序列，切断DNA双链，引发V（D）J基因片段重排。

The compound of RAG-1 and RAG-2 can identify specifically recombination signal sequence which lie two sides of the V 、 DH 、 J gene segment in Ig germline gene , then break DNA and induce the recombination of V ( D ) J gene segment .

线粒体呼吸链紊乱引发肝细胞性肝癌风险

Risk of hepatocellular carcinoma in liver mitochondrial respiratory chain disorders

元素碘原位生成物作为链转移剂引发VAc的DT聚合。

Degenerative transfer polymerization of VAc in the presence of elemental iodine .

RNA干涉（RNAinterference，RNAi）是指同源双链RNA所引发的特异序列的转录后基因沉默现象。它被证明是一项能有效而特异地抑制基因表达的新技术。

RNAi ( RNA interference ) is a process of sequence-specific , post-transcriptional gene silencing in animals and plants initiated by double-stranded RNA that is homologous to the silenced gene and has proven as a novel approach to suppress gene expression specifically .

聚合速率与过氧键浓度的1/2次方成正比。基于JWEB50中活性基团等活性假设、长链假定以及引发效率相等假定，建立了JWEB50引发St本体聚合的动力学模型。

And it is proportional to the square of the concentration of O-O group . A kinetic model for polymerization rate of St was established based on the hypothesis of equal reactivity , long chain assumption and under the quasi steady state .

脊椎动物中，长链dsRNA能引发干扰素反应而引起非特异性的mRNA降解，而21-23nt长度的siRNA能特异性介导基因的沉默，因而被广泛应用于基因功能研究。

In vertebrates , long dsRNA activates the interferon response and yield non-specific degradation of mRNA . In contrast , small interference RNA ( siRNA ) duplexes with the length of 21 to 23 nucleotides trigger specific gene silencing and thus be widely used for gene functional studies .

其作用机制可能涉及SOD2表达降低及出现功能异常的SOD1表达；SOD表达和功能异常导致氧化应激平衡失调，后者损伤线粒体呼吸链复合体，引发神经元退行性变。

Its mechanism may be related to the down-regulation of SOD2 and over-expression of abnormal SOD1 . The decline of SOD activity can lead to the disruption of oxidative stress balance , which inhibits the activity of mitochondrial respiratory chain complex and causes neurodegeneration .

为了实现瞬时组成沿分子主链连续变化，所有链必须同时引发，并在聚合过程中一直保持活性。

In order to achieve this continuous change in instantaneous composition , all chains must be initiated simultaneously , and must survive until the end of the polymerization .

企业客户资金链断裂会引发一连串的多米诺骨牌效应，商业银行更是首当其冲的受害者，这一效应直接导致信贷资金安全受到严重的威胁。

Capital chain rupture of firm could lead to " dominos ", specially , the bank is the first victim , suffering the threat of losing its credit property .

分析了亲水性物质、交联剂、扩链剂、引发剂、中和剂、有机溶剂等对水性聚氨酯涂膜外观及性能的影响。

The influential factors upon the title film appearance and properties are analyzed , including hydrophilic substance , crosslinking agent , chain extender , initiator , neutralized agent , and organic solvent , etc.

如果真这么做，可能打断全球石油供应链，并引发油价骤然剧烈地上涨。

Such a threat was recently made by Interior Minister Mostafa Pourmohammade and , it followed through , could interrupt the global supply chain and trigger a sharp and immediate spike in oil prices .

同时发现，该反应中均聚物的生成不仅可由CAN直接引发，还可能因淀粉自由基或淀粉接枝物自由基的链转移而引发。

Meanwhile , it is found that monomer free radicals may be produced not only by initiation of CAN directly , but also by the chain transfer reaction from starch free radicals or the free radicals of the starch graft copolymer .

通过分析平台公司内部运行机制、项目资金借贷流程等，发现贷款资金风险传递机制，对预防平台公司风险，防止其资金链断裂以至引发整个金融体系动荡有着极其重要的意义。

Through the analysis of the Platform Co internal operation mechanism , project fund loan process , found that the credit risk transfer mechanism , for the prevention of risk of the Platform Co , to prevent capital chain rupture and cause the financial turmoil has its significance .

甲基丙烯酸长链酯的等离子体引发聚合

A Study on Plasma-Initiated Polymerization of Long Alkyl Chain Methacrylates