螺旋

The results had positive cultures of the pyloric spiroid bacteria in 59 of 98 samples.

结果：98份样本中，培养出幽门螺旋菌59例，其中慢性胃炎阳性率62.7％(浅表性胃炎阳性率最高，达91.1％)，消化性溃疡阳性率57.4％；在慢性胃炎患者胃窦粘膜病理切片中可检出，仍以慢性浅表性胃炎检出率最高达91.1％。15例幽门螺旋菌阳性消化性的溃疡患者，经TDB治疗4周后有12例细菌消失，并伴有组织形态学改变。

The results indicate that [(L 1) 2SnEt 2] can selectively bind to the N 1 atom of the base and the phosphate oxygen atom of AMP and may further destroy the helical structure of DNA, while the dimethyltin compound of 1,3 dimethyl 4 acetyl 5 pyrazolone [(L 1) 2SnMe 2] merely binds to the the phosphate oxygen atom of AMP and causes the contraction of DNA helical structure.

结论3 二甲基 4 乙酰基 5 吡唑酮的二乙基锡配合物(L1 ) 2 SnEt2 可与AMP 的碱基N1 和磷酸根氧原子螯合并可能会破坏DNA 的双股螺旋结构；而二甲基锡配合物(L1 ) 2 SnMe2 易与单核苷酸的磷酸氧结合，难以与单核苷酸的碱基氮原子稳定结合且只引起DNA 双股螺旋的收缩

Regular coiled carbon tubes are prepared by pyrolytic decomposition of acetylene on titanium plates at 750℃.

规则螺旋碳管的形成与钛片的预处理有关，在盐酸处理过的钛片表面上所生长的碳管几乎都是规则螺旋形状的。

The second part of this thesis was the synthesis of several compounds with helical structure. Starting from 2,7-dihydroxynaphthalene, we synthesized racemic 2,13-dihydroxy[5]-helicene.

在合成螺旋骨架化合物的工作中，我们以2，7-二萘酚为原料出发，经过路线摸索，合成了外消旋的螺旋化合物[5]-helicene。

Letting the commonly used double-staged 2K-H typed differential mechanism be combined with the overrunning clutch this method achieved the operation without differential while the settlings were on sedimentation.

E书简介：摘要：传统卧式螺旋离心机在物料沉降分离时，对转鼓与螺旋输料器的相对运动所产生的搅动现象，提出一种差速传动机构改进方法。

Letting the commonly used double-staged 2K-H typed differential mechanism be combined with the overrunning clutch this method achieved the operation without differential while the settlings were on sedimentation.

传统卧式螺旋离心机在物料沉降分离时，对转鼓与螺旋输料器的相对运动所产生的搅动现象，提出一种差速传动机构改进方法。

We find a new type of waves, called sinklike spiral waves.

我们发现了一种由缺陷所维持的新螺旋波－汇螺旋波。

This thesis is to study the wave pattern selection in the heterogeneous reaction-diffusion systems, including propagation direction of target waves induced by a localized inhomogeneity, large heterogeneity maintained sinklike spiral waves in oscillatory media, and the competition of coherent wave patterns sustained by a localized inhomogeneity with turbulent waves in an excitable medium.

本论文主要研究非均匀反应扩散系统中波斑图的选择，如振荡系统中缺陷对其所诱导靶波传播方向的选择、缺陷所维持的一种新螺旋波－汇螺旋波的形成以及可激发系统中，缺陷诱导的有序波斑图和时空无序态的竞争和选择。

6To the case of cholesteric and smectic liquid crystals so that it can also beapplied to cholesteric and smectic liquid crystals.

为了使这一广义平均场方法具有更广泛的适用性，使之也可以应用于结构比较复杂的螺旋状和层状液晶，在本文的第一部分，我们将文献[6]中陶瑞宝教授等提出的广义平均场方法作了形式推广，经过推广后的广义平均场方法也可以应用于螺旋状和层状液晶。

Results Compared with percutaneous coronary angiography,the sensitivity of sixteen slice sparil CT in diagnosing moderate and severe coronary stenosis was 83.33%,and the specificness,positive predictive value,negative predictive value and degree of accuracy was 91.40%,85.59%,89.95% and 83.33% respectively.

对16层螺旋CT显示冠状动脉狭窄和经皮选择性冠状动脉造影显示冠状动脉狭窄进行定量评价。以经皮选择性冠状动脉造影结果作为诊断的金标准。计算出16层螺旋CT冠状动脉成像对冠状动脉狭窄的诊断准确性指标。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。