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重力作用下
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     Numerical Simulation of Al-Si/SiC Particle System Two Dimension Solidification Processing by Gravity Casting
     对重力作用下Al-Si/SiC颗粒系统二维凝固过程的数值模拟
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     Temperature Distribution under Action of Gravity Field
     重力作用下的温度分布
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     Numerical Simulation of Al/SiC Particle Two Dimension Solidification Processing under Gravity
     重力作用下Al/SiC颗粒二维凝固过程的数值模拟
     Study on the Surface Deformation of Flat Reflector Under Gravity Load
     重力作用下平面反射镜变形研究
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     Numerical Solution to the Free Liquid Surface under Gravity
     重力作用下液体自由面的数值解
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     Temperature Distribution under Action of Gravity Field
     重力作用的温度分布
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     The solutions of elasticity of cones under self-weight
     重力作用圆锥的弹性力学解
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     Study on the Surface Deformation of Flat Reflector Under Gravity Load
     重力作用平面反射镜变形研究
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     A Numerical Solving Process for Particle Motion under Gravity Action
     重力作用尘粒运动的数值解法
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     THE GRAVITATIONAL PLASTIC FLOW OF CRUSTAL MATERIALS IN SOUTHWEST CHINA
     在重力作用的我国西南地区地壳物质流
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Under the action of gravity, the powerful driving forces of recent tectonic movement affecting the studied plateau and adjacent areas are stemming from the crust of Qinghai-Xizang Plateau. Therefore, in Southwest China took place a flow of crustal materials toward the southeastern direction. Such flow possesses rather special nature, unlike the downhill sliding of the glacier. In the front of the flow can be found recent tectonic activities with different features due to the variations of resistance encountered....

Under the action of gravity, the powerful driving forces of recent tectonic movement affecting the studied plateau and adjacent areas are stemming from the crust of Qinghai-Xizang Plateau. Therefore, in Southwest China took place a flow of crustal materials toward the southeastern direction. Such flow possesses rather special nature, unlike the downhill sliding of the glacier. In the front of the flow can be found recent tectonic activities with different features due to the variations of resistance encountered. Moreover, the occurrence of earthquakes in Southwest China is also constrained by the material flow.The authors suggest that since the driving forces of recent tectonic activities in this area are in close relation to gravitational effect, the localized recent tectonic processes would be ascribed to the category of gravity tectonics.

重力作用下,青藏高原巨厚的地壳成为高原及其邻区现代构造运动的强大动力源。在其驱动下,我国西南地区存在着往南东方向运动的地壳物质流,它具有独特的运动方式,与冰川下滑运动有所不同。在地壳物质流动过程中,由于阻力的差异,可以表现出不同的构造活动性。西南地区地震的发生受到地壳物质流动的控制。西南地区现代构造运动的动力源与重力关系十分密切,因而可属于重力构造范畴。

This investigation concerns the stability of non-Newtonian power law fluid flowing down an inclined plane under gravity with respect to two-dimensional disturbances. The critical Reynolds number is given as a function of power law index n and the slope of the plane, and is computed for n = 1-0.15.

本文研究了对于二维扰动非牛顿幂律流体在重力作用下沿倾斜面流动的稳定性,得到临界雷诺数作为幂律指数n和平板斜率β的函数,并对于n-1-0.15的情况进行了计算。

In studying the cerebral circulatory changes under +Gz stress, ten healthy young men(18-24 yrs.) were exposed to + Gz stress on a human centrifuge with six meter radius. EEG,upper arm blood pressure, vibrocar-diogram and rheoencephalogram were recorded.lt was found that heart rate,upper arm blood pressure,cardiac output and periphery circulatory resistance increased,and amplitude and shape of rheoencephalogram chan- ged with the increase of +Gz. Changes of some important physoijogical parameters and the regulatory...

In studying the cerebral circulatory changes under +Gz stress, ten healthy young men(18-24 yrs.) were exposed to + Gz stress on a human centrifuge with six meter radius. EEG,upper arm blood pressure, vibrocar-diogram and rheoencephalogram were recorded.lt was found that heart rate,upper arm blood pressure,cardiac output and periphery circulatory resistance increased,and amplitude and shape of rheoencephalogram chan- ged with the increase of +Gz. Changes of some important physoijogical parameters and the regulatory mechanisms of cerebral circulation under +Gz stress were analyzed and discussed. Results showed that in spite of existance of the various compensatory mechanisms, impairment of the cerebral circulation still occurred due to the hydrostatic effect of the blood column at higher G levels.

为了研究+Gz重力作用下脑循环的改变,10名被试者在半径为6米的人体离心机上承受了+G_Z超重作用。实验记录了心电、上臂血压、心振动图和脑阻抗图。发现,随着超重值的增加,心率、心输出量、上臂血压和外周循环阻力逐渐增大,计算得到的头部眼水平的平均动脉血压逐渐下降,脑阻抗图波高和波形发生明显改变。并对重要的生理指标和脑循环调节机制进行了分析和讨论。结果表明,尽管机体内存在许多补偿机制,但在G值较高时,由于不能完全代偿血液静水压效应的影响,脑循环还是可能发生明显的改变。

 
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