查询词典 connectivity

We define a novel valence δiv through connecting quantum chemical parameters with molecular connectivity index and apply it to the QSRR of alcohol, ketone, ester compounds.

最后，本论文还把量子化学指数用于分子连接指数的改进，以原子的电荷密度为该原子点价的方法对醇、酯、酮类化合物的QSRR关系进行了研究，所得模型的相关性也比较理想。

On the landscape level, the regional landscape heterogeneity is increased and the connectivity reduced, which presents the increase of Shannon's diversity index and Evenness Index, decrease of dominance index and increase of fragmentation index. On the class level, it shows that human disturbance on landscape is intense during the past five years, anti the disturbance to artificial landscape mote intense luau that on semi-natural landscape, which means that the fragmentation index of semi-natural landscape is relatively smaller while that of the artificial landscape is larger.

从景观水平上看，区域景观异质性在增大，景观斑块的连通性降低，表现为多样性指数和均匀度指数呈增加，优势度指数减小；从类型水平上看，5年间人类对景观的干预程度较大，对人工景观的干扰强于半自然景观，体现在半自然景观类型的分离度较小，而人工景观类型的分离度较大。

In this paper, we have initiated the relationship between molecular connectivity index and retention value in TLC for ten amino acids, eleven sulfides, six mercaptans and twenty 2,4-dinitrophenylhydrazones of aldehydes or ketones respectively.

把分子连接性指数法应用到10种氨基酸、11种硫醚、6种硫醇和20种醛、酮的2，4－二硝基苯腙薄层色谱保留值的相关性研究中。

A novel topological index derived from eccentric connectivity has been proposed, and correlated with three thermodynamic properties such as standard enthalpy, standard entropy and standard formation free energy of 94 molecules of mercaptans and thioether s.

提出了一个新的拓扑指数，并用此指数和与此有关的偏心连通性指数研究了 71个硫醚分子和 2 3个硫醇的气态标准生成热(-△Hf2 98 )，气态标准熵(S2 98 )，气态标准生成自由能(△Gf2 98 )等三类热力学性质。

Using the valence electron orbit energy E(subscript i and number of valence electron shell n(subscript i, a new connectivity topological index (superscript mE was proposed from δ.

利用价电子轨道能量E和价电子层数n，构建了新的原子点价δ，由点价δ构建价电子轨道能量拓扑指数E。

Molecular topological research has been applied to corrlelate hydrogen connectivity indices of 34 alkanes in naphthas and the chromatographic retention index in the gas chromotography.

通过计算石脑油中 34种烷烃的氢连接性指数，用多元线性回归将它与毛细管气相色谱保留指数进行关联分析获得良好的相关性，相关系数R为 0 。990 0 ，标准偏差 s为 15 。2 4 。

They felt that the Net's value would depend on high connectivity.

他们认为网络的价值就在于高度的互联性。

To ensure connectivity, the start point of a stand guidance taxiline must be the endpoint of the connecting taxiway guidance line.

为了确保连接，独立的引导 taxiline 的起点必须是引导滑行道的连接线端点。

Almost all Ergoline sunbeds come with infrared connectivity as standard to make reading and configuring control parameters on your sunbed easy.

几乎所有的Ergoline晒机都带有标准的红外线遥控功能，令您轻松准确地读取和操纵各项控制参数。

Therefore, if your complaint is valid, then there is a good chance the spammer will lose connectivity.

因此，如果你的投诉是正确的话，有一个很好的机会就失去了spammer连通。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。