神经键

A group bond contribution model using artificial neural networks was established to predict the flash point s of alkanes.

建立了一个基于人工神经网络方法的基团键贡献模型，用于预测烷烃闪点。

Following this discovery, a variety of neurotoxins were characterized and their amino acids sequences, secondary structure and tertiary structure were also characterized. These toxins are polypeptides of single chain and consist of 46-49 amino acids, cross-linked by three disulfide bridges. The ordered secondary structure has been determined on the basis of NMR studies. The dominant feature is a four-stranded anti-parallel β-sheet, linked with three loop.

随后，又有多种海葵毒素被发现，并做了氨基酸序列测定，以及二级、三级结构的分析，从已报道的海葵神经毒素的一级结构来看，大都是由46-49个氨基酸组成的单链多肽，分子量5kD左右，有6个cys残基，形成3对二硫键，它们的二级结构中不存在α螺旋结构，而是4链反向β折叠，β折叠由3个大小不同的环结构相连。

Information of group property and connectivity in molecules was contained in the model and 16 group bonds were used as input parameters of neural networks to study the correlation of molecular structures with flashpoints of 44 alkanes .

以16种烷烃基团键作为神经网络的输入参数，研究了44种烷烃的闪点与分子结构之间的相关性。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。