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Changes in potassium currents of vascular smooth muscle cells isolated from hindquarter arteries of rats after 4 weeks simulated weightlessness.

关于前者，我们已观察到模拟失重大鼠肠系膜小动脉VSMCs的BK Ca及KV电流密度均显著增加，静息电位更负 [10]。

It is speculated that the hyperpolarization of VSMCs and decreased calcium influx through voltage-dependent calcium channels might be one of the electrophysiological mechanisms involved in the depressed vasoreactivity of hindquarter arteries induced by simulated weightlessness.

以上结果提示，VSMCs的超极化及进一步引起的通过电压依赖性钙离子通道的钙内流减少可能是模拟失重引起后身动脉反应性降低的电生理机制之一。

The change of the current density of the L-VDC may also contribute to the depressed responsiveness of hindquarter arteries from simulated weightless rats.

此外，本工作还观察了钙离子通道功能变化，发现模拟失重下肠系膜小动脉VSMCs L-VDC电流密度逐步降低，4 wk时达非常显著程度。

To verify our speculation, we investigated the functions of the voltage-dependent potassium channel and large conductance calcium-dependent potassium channel of VSMCs isolated from hindquarter arteries and cerebral arteries of rats after short- and mid-term simulated weightlessness and compared with that of control rats, using both pharmacological methods and whole cell patch clamp techniques.

为证明我们的推想，我们采用动脉血管环药理学实验方法及全细胞膜片钳技术，来观察模拟失重大鼠脑部及后身动脉VSMCs的两种钾离子通道电压依赖性钾离于通道LK＊与大电导钙激活钾离于通道［BK＊）功能的改变并注意此变化的时程特征。

Previous findings from our laboratory have demonstrated that simulated weightlessness may result in atrophic changes with depressed vasoconstrictor responsiveness in hindquarter vessels, and hypertrophic changes with enhanced vasoconstrictor responsiveness in cerebral arteries of rats.

动物实验结果已证实，模拟失重可使大鼠不同部位动脉血管发生差异性改变：后身动脉血管发生萎缩性改变和收缩反应性降低；而脑部血管则发生肥厚性改变和收缩反应性增强。

Boltzmannn computer network is Hinton and others in 1985 will be simulated annealing primer access to the neural network, the n...

Boltzmannn机网络是Hinton等人在1985年将模拟退火算法引入到神经网络中，提出的，简称BM网络。

In conventional numerical analyses the macro non-linearity of the materials is simulated through assigning the nonlinear constitutive relation of homogeneous material to each element.

通常的数值分析通过将非线性本构关系赋给每个单元来模拟材料的宏观非线性。

In chapterⅣ, three problems in the velocity space are simulated numerically under the basic presumption that the distribution function is homogeneous in configuration space. The results of numerical simulations demonstrate that the conservation laws of momentum and energy are obeyed accurately.

第四章在"空间均匀分布"的前提下对三个速度空间中的问题作了数值模拟，数值模拟结果表明这种方法能够精确地保证动量及能量守恒。

For verifying the proposed approach, the EEG potential simulated from current dipoles in an ideal homogeneous medium are generated. The localization discrepancy and the moment orientation discrepancy are used as index for measuring the estimation accuracy.

为了验证这里所提出方法的正确性，脑波模拟讯号是由电偶极在理想的均匀介质头颅模型下所得到；定位偏移量及偶极矩方向偏移量两参数被用来当做估计值准确度的指标，另外，初始值估计法的偏移量分布可用数学中的珈玛方程式描述出分布的特性。

This may be due to hydrolytic chelating, precipitation and the sediment or hydrobioes attachment, absorption etc. The honewort had stronger ability of accumulating La because of its large leaf surface that could attach La. The accumulating ability of snail and fish to La was relatively weaker but some organs of them had higher contents of La especially in the intestines, shell of snail, and in gill, internal organs, scales, head, bone of fish, rare in muscle. The total accumulating quantities of La in each component of simulated aquatic ecosystem were a decreasing order of: sediment ＞honewort＞snail＞fish, and the sequence of bio-concentration facter was as follows: honewort＞snail＞fish.

2金鱼藻对La有较强的富集能力，主要通过枝叶表面吸附、吸收而富集；螺蛳对La也有一定的富集，并主要分布于肠、壳中，螺头中积累相对较少；草鱼对La的富集能力相对较弱，进入鱼体的La主要集中在鳃、内脏、鳞及头、骨中，肌肉中积累量较少；按质量计，稀土元素La在模拟水生态系统各部分中的积累量依次为：底泥＞金鱼藻＞螺蛳＞草鱼；各水生生物对稀土La的生物富集因子依次为：金鱼藻＞螺蛳＞草鱼。

For the head-teacher of the class said that I had seriously broken the school rules,which led me to a three-day suspend class.

为什么呢？因为我的班主任说我严重的违反了校规，于是让我停课三天。

Many of them believe that the conversion of thousands of working-class folk in England spared that nation from the mass carnage and the tyranny that came with the revolution in France.

他们之中有许多人相信，在英国数以千计的劳工阶级之悔改信主使英国免於遭受如法国大革命所造成的大屠杀和专制暴政。