收缩效应

Carbon monoxide may also have negative inotropic effects.

吸烟产生的一氧化碳具有支气管平滑肌收缩的负面效应。

The ocular accommodation has a great influence on refractive components. It is not only the process by which the refractive power of the lens is increased. But the lens itself moved forward relatively. The accumulation effects of accommodation induced by near-work is the main cause of myopia developed in children. The asymmetry of corneal surface was not only related to keratometer K1 and K2 , even the curvature within the same horizontal or vertical meridian was asymmetry.

调节本身不仅是传统意义上的睫状肌收缩和晶状体变凸，同时还伴有晶状体的相对前移；调节对眼的几乎所有屈光构成因素有着显著的影响，视近活动的累积效应是儿童近视眼发生的主要原因；角膜的非球面性不但表现为两个相互垂直子午线的曲率不等，即便是在同一垂直或水平径线上的屈光分布也是非对称的。

Constant value of vena contracta coefficient has been employed in the well-used quasi-steady models for computing the nonlinear acoustic impedance of the orifice. However, this nonrealistic assumption degrades the accuracy of the theoretical models.

常用的小孔声学非线性效应的准定常模型采用不随声强变化的vena收缩系数，这种不合实际的假设影响了非线性声阻的计算精度。

objective trimetazidine has shown anti-ischemic properties to improve exercise tolerance without haemodynamic effects and direct cyto protective effect on the myocardium.however,it is not clear whether trimetazidine has beneficially effect on severe ischemic cardiomyopathy.methods 19patients（68±9）years with postnecrotic left ventricular dysfunction（ejection fraction31.7%±5.4%）were studied to examine the benefit of adding60mg a day of trimetazidine for3months to the classical therapy.the assessment included clinical evaluation,electrocardiography and echocardiography.results after adding60mg a day of trimetazidine for3months,attack of angina was relieved and dyspnea was improved（p.05）.but heart rate,systolic blood pressure,rate pressure product,ejection fraction,left ventricular volume and global wall motion index were not changed.conclusion trimetazidine seems to improve clinical status while can not change oxygen supply-to-demand ratio without adverse effects in patients on severe ischemic carˉdiomyopathy.

目的 曲美他嗪是一种新型的抗心肌缺血的药物，能够改善患者的运动耐量和心肌的直接保护作用同时并没有血流动力学效应。但目前对于严重缺血性心肌病患者的临床治疗价值还需要进一步观察。方法 19例（68±9）岁确诊为缺血性心肌病（左心室射血分数0%）的患者在常规治疗的基础上加用每日60mg曲美他嗪治疗3个月，随诊观察患者临床情况以及超声心动图指标的变化。结果 19例患者均可耐受在常规治疗基础上加用每日60mg曲美他嗪的治疗，随诊发现患者心绞痛发作明显减少，运动耐量明显改善。同时患者心率、收缩压、心率血压乘积、左心室射血分数、左心室容量以及整体室壁运动指数无明显改变。结论缺血性心肌病的患者在常规治疗基础上加用曲美他嗪是安全的，同时其能明显改善患者的临床状态，而这种作用并不改变心肌氧的供求比值。

The purpose of this study was to compare the vasodilating effects of angiotensin-(1-7) [Ang-(1-7)] on the different vessels and to clarify its mechanisms by using relaxing responses of preconstricted vascular rings.

实验采用兔外周动脉离体标本，在预收缩血管后，用血管紧张素[angiotensin--(1--7)，Ang--(1--7)]舒张血管，比较Ang--(1--7)对外周各血管床的舒张效应并分析其产生机制。

Methods The spontaneous contraction of gastric smooth muscle strip was recorded by using physiograph in rats. The change of tension in response to different concentrations of CNP and sodium nitroprusside, co-incubated with high concentration glucose (30 mmol/L) or mannitol were detected.

取大鼠40只制备胃窦环形肌条，肌条收缩活动稳定后，对照1、2组分别加入不同浓度CNP1×10^(-8、3×10^(-8)、1×10^(-7)mol/L及硝普钠1×10^(-7、3×10^(-7)、1×10^(-6)mol/L，观察其效应，每次加药观察20 min，冲洗3次；高糖1、2组预加葡萄糖使浴槽终浓度为30 mmol/L，其后操作同对照1、2组；甘露醇组预加甘露醇30mmol/L，其后操作同对照1组；均采用多道生理信号采集处理系统计算CNP致平滑肌张力的抑制率。

In view of great uncertainty factors in the effect of shrinkage and creep, stochastic finite element method is applied to structural analysis. It can calculate the coupled stochastic response of uncertainty factors through randomizing input variables representing the stastics stochastic factors.

4考虑到收缩徐变效应分析中大量不确定因素的存在，本文引入随机有限元理论，通过对这些随机因素进行统计分析并作为输入变量，有效地计算模拟了不确定因素的混合随机响应。

Other studies argue that the spleens contraction and subsequent release of red blood cells is not that immediate and may take up to a quarter hour of sustained freediving.

有的研究则指出脾脏收缩并陆续释放红血球，这样的效应并不是很立即的，必须要持续进行自由潜水二十分钟才会发生。

By means of the present model certain phenomena related to the nonlinear acoustic properties of an orifice, such as the roll-up of the shed vortex sheet and the forming of the Vena-Contracta are simulated. For a sinusoidal sound pressure, the time- history of the average velocity through the orifice is computed, and the nonlinear distortion of the velocity is examined by means of the Fourier decomposition.

依据此模型，对圆孔声学非线性效应的若干特征现象进行了数值模拟，如脱落涡层的卷曲，Vena收缩段的动态形成；在孔板前声压按余弦规律变化的情况下，计算了孔中平均速度的时间历程，并借助于Fourier分解分析了孔中平均速度的畸变情况。

Finally, it can be concluded that the construction process of Shaxi Bridge is reasonable, and that the influence of shrinkage, creep and temperature load on the prestressed concrete slab bridge is obvious. It is showed that the calculation result using FEM and the actual damage phenomenon fit well.

最后，通过这些分析可以看出沙溪大桥的施工过程是合理的，收缩徐变和温度效应对预应力混凝土板拉桥的影响很大，验证了有限元计算结果与实际出现病害现象的吻合。

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如果你不幸失恋了，请告诉我，我会帮助你摆脱困境，真的，请联系我啦！

China's plan to cut energy intensity by 20 percent and pollutant discharges by 10 percent between 2006 and 2010 is a case in point.

中国计划在2006年到2010间降低20%的能源强度和减少10%的主要污染物排放，就是一个这样的例子。