螺旋形成

Helix and angles turns out alternately in Sheep C3d second structure, which helix accounted for 55.12%, strand to 2.31%and coil for the 42.57% of such a structure conducive to the performance of barrel-shaped structure is formed.

绵羊C3d二级结构中螺旋和转角交替出现，其中α-螺旋占55.12%、β-折叠为2.31%，转角区域为42.57%，这样的结构有利于其桶状结构的形成。

Generally, B in the configuration closest cell's DNA conformation, it and the double helix model are similar. A-DNA and when RNA member double helix area as well as duplication forms the DNA-RNA hybrid molecule conformation is close. Z-DNA take the nucleotide dimer as the unit left-hand winding, its principal chain assumes the denticle the shape, therefore.

一般认为，B构型最接近细胞中的DNA构象，它与双螺旋模型非常相似。A－DNA与RNA分子中的双螺旋区以及转录时形成的DNA－RNA杂交分子构象接近。Z－DNA以核苷酸二聚体为单元左向缠绕，其主链呈锯齿形，故名。

A rotary separator of vacuum cleaner is composed of a dust collecting container, an opening-closing cover, and a separating plate dividing the dust collecting container into upper space and lower dust collecting chamber.

本发明属于一种真空吸尘器用的旋转分离装置，包括含有异物的空气流入其内形成螺旋流的集尘箱，可开闭集尘箱的盖，集尘箱内设有分离板，分离板与集尘箱的下侧内周面严密地结合，在分离板的下部形成集尘部；分离板是中心开有开口部的圆锥状，从上面的圆周向下倾斜形成引导部，引导部的最下端有引导异物流入到上述集尘部的流入孔。

To simplified the designing, diagram presentation, construction and profile of helicoidal stair, the formation of helicoid is analyzed, and it′s mathematical model is studied.

为简化旋转楼梯的设计、图示、施工及剖面形状，对螺旋面的形成进行了分析，建立了螺旋面的数学模型。

To simplified the designing, diagram presentation, construction and profile of helicoid al stair, the formation of helicoid is analyzed, and it′s mathematical model is studied.

为简化旋转楼梯的设计、图示、施工及剖面形状，对螺旋面的形成进行了分析，建立了螺旋面的数学模型。

HIRA proteins are characterized by 7 conserved WD repeats in their amino-terminus, which are predicted to assemble into a β-propeller structure known to mediate protein-protein interactions.

HIRA蛋白家族在N端的7个WD重复区，推测形成一个β螺旋结构，该β螺旋结构可能与蛋白质—蛋白质互作有关。

Acted by taper-face component of centrifugal force together with scroll conveyor,the cake moves interruptedly toward the bi end of the screen-bowl and is discharged out of the screen-bowl,and then out of the machine through a discharging tank.

电机带动转鼓及同心安装的输料螺旋，以一定的差速同向高速旋转，物料由进料管连续引入，均匀分布到转鼓底段滤网壁上，在离心力作用下，液相物穿过滤网和转鼓内形成滤渣，滤渣在离心力的锥面分力和输料螺旋的共同作用下，连续不断地向转鼓大端移动排出转鼓，经卸料槽排出机外。

Using papain to hydrolyze the legumin and vicilin respectively showed that it could obtain higher DH from legumin than from vicilin, and the emulsifying activity of legumin hydrolysates was also increased more than vicilin hydrolysates. It was easier to hydrolyze the β-sheet fractions than α-helical fractions of broad bean legumin by papain, but to vicilin the β-sheet fractions was difficult to be hydrolyzed.

发现Papain对11S的水解程度大于7S，11S水解物的乳化活性也高于7S水解物；对水解物的圆二色性分析表明：蚕豆11S球蛋白的β-折叠结构易于被木瓜蛋白酶作用，而7S球蛋白的α-螺旋结构易于被木瓜蛋白酶作用；蛋白质分子中的α-螺旋结构对乳状液的形成和稳定起着重要作用。

The induced supramolecular chirality was found to be dependent on the absolute configuration of lateral residues, that is, the polymers with-configurational oxazolinyl chromophores tended to form chiral aggregates with levorotatory handedness, while polymers obtained from the-monomer offered dextrogyrate one upon the addition of Cu salt. A model, in which side groups would arrange in a helix fashion, is employed for describing the unusual chirality.

由此提出了侧基在Zn／Cu协同配位作用下形成螺旋状排列的模型，即侧基螺旋模型。N-噁唑啉苯基马来酰亚胺与甲基丙烯酸甲酯共聚得到了耐热性能好(热分解温度大于296℃)的光学活性聚合物~(25D=-7.8°(来源：Af4BC论文网www.abclunwen.com)～-36.6°。

Portal braches of 4-5 orders were found in all 19 cases of Child Grade I, with esophageal varices and paragastric varices and no fistula of hepatic artety-portal vein or portal vein embolus; Portal braches of 3-4 orders were displayed in all 16 cases of Child Grade II, besides esophageal varices and paragastric varices, cirsomphalos, retroperitoneal varices, paraesophageal varices, dilated azygos vein were also noted, some patients had fistula and portal vein embolus; in Child Grade III, portal branches of 3~4 orders were displayed with more collateral circulations, dilated left renal vein and paragallbladder varices were appeared, with fistula and portal vein embolus or not.

Child I级19例，肝内门静脉显影4~5级，侧枝循环以食管及胃周静脉曲张为主，没有肝动脉－门静脉瘘或门静脉血栓形成；Child Ⅱ级16例，肝内门静脉显影3~4级，侧枝循环除食管及胃周静脉外，脐周静脉、腹膜后静脉、食管周围静脉、奇静脉也有所开放，部分有肝动脉－门静脉瘘或门静脉血栓形成；Child Ⅲ级6例，肝内门静脉显影3~4级，侧枝循环开放较Ⅱ级增多，可出现左肾静脉扩张或胆囊周围静脉曲张，伴或不伴有肝动脉－门静脉瘘或门静脉血栓形成。16排螺旋CT门静脉造影对上述病例分级为一级17例，二级18例，三级6例，与Child分级结果高度相关。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失