查询词典 helix

Mechanism of the allosteric change Oxyhemoglobin ahs a different quaternary structure from deoxyhemoglobin. As O 2 binds to the Fe 2+ it distorts the heme group and moves the proximal histidine. This in turn moves helix F and alters the interactions between the four subunits.

变构转变的机制：脱氧血红蛋白与氧合血红蛋白有不同的四级结构，当 O 2 结合到 Fe2+时，使血红素基团变形并移动邻近的组氨酸，随之移动螺旋 F 和改变四个亚基间的相互作用。

Aim at disadvantages of traditional measuring methods,such as lower precision and complicated operations,a precise measuring method for pitch circle helix angle of involute spur gear by CMM was put forward.

针对渐开线圆柱斜齿轮分度圆螺旋角的传统测量方法精度低、操作复杂等缺陷，提出用三坐标测量机精确测量圆柱斜齿轮分度圆螺旋角的方法，介绍了其测量原理及步骤，并进行了测量精度分析。

Because the liquid crystal material is birefringent, light passing through one polarizing filter is rotated by the liquid crystal helix as it passes through the liquid crystal layer, allowing it to pass through the second polarized filter.

因为液晶材料是双折射，光线穿过一个两极化的过滤器是旋转液晶螺旋，因为它通过液晶层，允许它通过第二偏振过滤器。

We found a proper expression vector by simulating protein structure. We simulated its proper conformation in two vectors pGEX-6P-1 and pET44b by homology modeling.

本研究探讨了将蛋白结构模拟用于寻找合适的表达载体的方式：通过同源建模，模拟了5-helix在pGEX-6P-1载体及pET44b载体上的融合蛋白形成的最有可能的2种构象。

Its work is the process of spraying by the pulp put out the warehouse I expected or high water concentration pulper, as well as the initial concentration of the pulp slurry into the mouth of the double helix squeeze machine feed the population through the right and left of the screw shaft Reverse spin, by the end of the pulp to be on the other side.

其工作过程是纸浆由喷放仓的出料口或高浓水力碎浆机的以及经初步浓缩的浆料出浆口进入该双螺旋挤浆机的进料口，通过左、右螺旋轴的反向旋转，纸浆由一端被推向另一端。

The method replaces saltpetre Zun and combination of helix mildew element to use local treatment chronic periodontosis patient 30 (30 teeth), differ with same patient quadrantal additional 30 teeth apply the Zun that replace saltpetre to regard as alone contrast group, observation uses medical from beginning to end two groups each change of clinical index.

方法替硝唑和螺旋霉素联合应用局部治疗慢性牙周炎患者30例(30牙)，并以同一患者不同象限的另30牙单独应用替硝唑作为对照组，观察两组用药前后各临床指标的变化。

Methods 1、Choose one fresh pelvis specimen of adult man, affirmat it is normal or not by checking it with X-ray at first; then scan it with helix CT, keep the pelvic quiescing when being scaned. Obtain series fault images of the pelvis, import the images into Mimics10.01 software and restitue 3D visible model of pelvis.

获取骨盆系列断层图像，将图像按顺序导入利用Mimics10.01软件，重建骨盆三维可视模型；再利用FreeForm软件对模型进行修饰处理，并截取髋骨模型；然后将三维髋骨以IGES格式导入有限元软件Ansys8.0进行力学参数赋值，建立髋臼三维有限元模型。

In addition, the 3D-model structure of PvFadA is composed of 11 helixes, moreover,α3,α4,α6 and α7 form a core 4-helix bundle to regards as an active center in this enzyme, similar as acyl-ACP desaturase of Ricinus communis and Mycobacterium tuberculosis H37Rv.

PvFadA的3D结构类似于蓖麻和结核分枝杆菌H37Rv的acyl-ACP去饱和酶。

So that it results in the change of the rotatory direction. These changes are accorded with the rule of helix theory.

此断言显然违背了物质的所有性质都是由其结构决定的这一基本化学原理。

Because many kinds of specific helix are contained in every conformation, it is difficult for us to deduce its rotatory direction.

每种构象都包括特有的数种螺旋，很难推断其旋光方向。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。