helices

Discusses algebraically and geometrically the properties of the ruled surfaces in the Euclidean three-space, especially, the principal normal surfaces on which there are some special curves, such as Mannheim curves, Bertrand curves and general helices.

在三维欧氏空间中，作为特殊曲线，Mannheim曲线、Bertrand曲线以及一般螺线具有良好的几何和代数性质.讨论了三维欧氏空间中特殊曲线的主法线曲面。

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Various helical rich protein structure models will be used to reveal the properties of protein helices.

不同螺旋的富含蛋白质结构的模型将会用来展现蛋白质螺旋的特性.

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Double helical structure of DNA and types of DNA helices.

去氧核糖核酸的双螺旋结构与其类别.

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Moreover, the conformation of DNA changes and the helices are kinked.

同时DNA发生构象变化、螺旋扭结。

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These results may be useful in designing helices-BWT or TWT.

这些结果可用于螺旋线返波管或行波管的设计.

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In the present representation this crystal would correspond to a parallel array of helices.

在这种表示法中,晶体应相当于许多螺旋线的平行排列.

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Proved by the XOR and double helices problems, the new approach is effective and satisfying.

用异或问题和双螺旋线问题验证该新方法的有效性和泛化能力,取得了令人满意的结果.

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Site-specific infrared dichroism enables orientational analysis of TM α-helices bundles in aligned bilayers.

位点特异的红外二色性分析可使得在脂双层中定向分析跨膜α螺旋束成为可能.

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LBG also interacts with xanthan and carrageenan helices to form rigid gels.

LBG还 可与黄原胶和角叉胶单环反应,形成坚硬凝胶.

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Variation of helices based on dihedral angels and residue composition.

不同的螺旋是依据二平面夹角与残基组成来决定.

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In order to tune the QHA in the cavity, an improvement is proposed by utilizing the bottom of the cavity and the horizontal branches of the four helices.

对QHA天线在腔内的应用提出了利用腔底与末端水平支节进行调谐的改进。

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