A simple formula for calculating the standard formative heat of organic compounds containing nitrogen or sulfur using the inductive effect index is established in this paper. 建立了用基团电负性计算含氮含硫有机物键裂能的简单方法,并且得到自由基标准生成热的计算方法。
By using the inductive effect index, the formula for calculating the combustion heats of some normal hydrocarbons has been built up. 利用基团的诱导效应指数,首次提出了分子诱导效应指数的概念,并定义了链烷烃的有效碳链长度。
Inductive effect of methyl jasmonate on tobacco resistance to cucumber mosaic virus 茉莉酸甲酯对烟草抗黄瓜花叶病毒的诱导效应
A Study of the Regulation of the Policy for FDI in China& Based on the Inductive Effect of Heterogeneous Capital 中国外商直接投资政策的调整研究&基于资本异质性的引致效应
The inductive effect decreases with increasing distance. 诱导效应随着距离的增加而减弱。
Inductive Effect Index and Gas Phase Proton Affinity of Aliphatic Compound 诱导效应指数与脂肪族化合物的气相质子亲合能
Inductive effect of multiple cytokines on bone regeneration 多种细胞因子对骨再生修复的诱导效应
Inductive Effect of Attenuated Strains and its Inactivation Matter on the Resistance of Watermelon to Anthracnose 弱致病菌株系及其灭活物对西瓜抗炭疽病的诱导效应
It was shown that ( 1) high sucrose concentration exerted significant inductive effect on embryoid formation and the optimum sucrose concentration of cabbage anther culture was 6% and the embryoid induction rate reached as high as 12.2% at this sucrose concentration; 结果显示:(1)高浓度蔗糖对甘蓝胚状体形成具有显著的诱导作用,6%蔗糖浓度是甘蓝花药培养的最适浓度,其胚状体的诱导率最高达12.2%;
And the cell density of the lysogenic bacteria also greatly affected the inductive effect of the bacteriophage. 细胞密度对HX&XO体系的诱导效果也具影响。
The synergistic inductive effect of iron(ⅱ) and antimony(ⅲ) upon the chromium(ⅵ)-iodide kinetic reaction systems had been studied, and the concept of synergistic inductive coefficient was defined. 研究铁(Ⅱ)和锑(Ⅲ)对Cr2O7~(2-)-I~-动力学反应体系的协同诱导效应,提出协同诱导系数的概念。
The inductive effect of K+ to the metamorphosis of 9 species of the sea urchin such as the red sea urchin was reported. +是对海洋底栖无脊椎动物幼虫诱导普遍有效的无机寓子。本文探讨了K+对红海胆等9种海胆的变态诱导效果,分析了其安全使用浓度、处理时间等技术。
The use of the inductive effect index and heat chemical radius of non-spherical ion as the bond-parameter s enables the scope of the bond-parameter scale of the hardness-softness of acids and bases to be extended from simple-ion to complex-ion. 本文采用诱导效应指数和非球形离子热化学半径作为键参数,可使软硬酸碱的键参数标度范围从简单离子扩展到复杂离子。
Conclusions The increase of intracellular calcium concentration may have an inductive effect of apoptosis on MCF 7 cells, which is independent to Caspase 3. 结论细胞内钙离子浓度的升高对MCF7细胞株可诱发不通过Caspase3途径的细胞凋亡。
The Inductive Effect Index and Bond Dissociation Energies of Organic Compounds 诱导效应指数与有机物的键裂能
The Inductive Effect of Alkyl in Organic Compounds 有机化合物中烷基的诱导效应
The paper discusses the common effect of some factors: inductive effect, conjugation and hyperconjugation, on thd alkene addition reaction, and interprets with examples how to comprehend and apply correctly Markovnikov rule. 本文综合考虑诱导效应、共轭效应和超轭效应等因素对烯烃加成反应的共同影响,并结合具体实例阐述如何正确理解和应用Markovnikov规则。
The Relation between the Inductive Effect Index and Some Thermodynamical Parameters of Alkyl Derivation 诱导效应指数与烷基衍生物某些热力学参数的关系
The inductive effect of No nitrogen condition on the formation of spore and vesicle disappeared while nitrogen was added into medium. 一段时间的无氮培养对孢子和泡囊形成的诱导效应,在加入氮源后不能保持下去;
Inductive effect of dexamethasone on marrow cells 地塞米松对骨髓细胞的诱导作用
Conclusions The astrocytes in striatum might have an inductive effect on dopaminergic neuronal differentiation of embryonic stem cells. 纯化培养的纹状体神经元条件培养液对胚胎干细胞向多巴胺能神经元诱导分化的作用很弱,其分化率仅为3%。
Butyl  ̄( 13) C data indicated that the influences of tin on butyl group is an electropositive inductive effect. 基于化学位移及偶合常数讨论了丁基及各杂环基与锡的键合性质,丁基~(13)C谱显示,锡对丁基的影响是电正性取代诱导效应。
Objective To study the inductive effect of Cortex Periplocae extract ( CPE) on apoptosis of human gastric cancer cells BGC-823 and its mechanism. 目的研究香加皮水提取物(CPE)诱导人胃癌细胞BGC-823凋亡及其作用机制。
The Inductive Effect of K~+ to the Metamorphosis of Larvae of Several Species of Sea Urchin K~+对几种海胆幼虫变态的诱导效果
This paper expounds the negative inductive effect of alkyl and explains the order of acidity of some substances. 阐述了烷基的吸电子诱导效应,因此解释了一些物质的酸性变化顺序。
A kinetic spectrophotometric method for the determination of trace arsenic was proposed based on the inductive effect of As ( III) on the Cr ( VI)-Fe ( phen) 32-+ redox reaction in acidic medium. 依据As(Ⅲ)对Cr(Ⅵ)-Fe(phen)3~(2+)氧化还原反应在酸性条件下的诱导作用,提出了一种测定微量砷的动力学方法。
The relationship of gas phase proton affinity ( PA) of aliphatic amines, alcohols and ethers, inductive effect index ( I) of alkyl group, atomic charge ( q x), electronegativity of element ( X N) of affinity atom in RX molecules was studied. 用烷基诱导效应指数I和RX分子中质子亲合原子X所带电荷qx及元素电负性XN与脂肪胺、醇、醚的气相质子亲合能PA进行关联。
Analyse on operational mode shows that the mechanism of action for inductive effect of DPF. 对开发性政策性金融运作模式的分析展示了开发性政策性金融诱导效应的作用机制。
Grouped regression and construct cross terms are used respectively to test the influence of achieving conditions on the inductive effect of the adoption of the technology in labor transfer. 分别采用分组回归和构造交叉项的方法检验实现条件对劳动力转移诱导农户改善技术效率效应的影响和制约。