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Fluorine radicals are produced in a glow discharge with a nonuniform pressure.


Flow and heat transfer of an anomalously viscous fluid in the gap between rotation and stationary disks with nonuniform pressure


The problem of bypass flow of a liquid under the influence of nonuniform pressure about the perimeter is solved.


Special attention is given to nonuniform pressure.


Stability of threelayer orthotropic cylindrical shells with nonuniform pressure

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 At first, the authors describe here the principle and method of measuring the ground stress, including the construction of the stress guage employed, the technique of overcoring, laboratory model experiments, testing of the dependability of the stress measurements.In North China we used the method of overcoring to determine the absolute value of the ground stress. Although the observation was always made at a depth of less than 30 meters and the directions of the maximum principal stress are not entirely the... At first, the authors describe here the principle and method of measuring the ground stress, including the construction of the stress guage employed, the technique of overcoring, laboratory model experiments, testing of the dependability of the stress measurements.In North China we used the method of overcoring to determine the absolute value of the ground stress. Although the observation was always made at a depth of less than 30 meters and the directions of the maximum principal stress are not entirely the same at each locality, but in considering the North China Region as a whole, the ground stress fieldis compressive and the predominant direction of its principal stress is NWW to EW.The absolute stress value determined within the epicentral region of a strong earthquake is usually less than that of the region outside it. It may indicate the process of stress release and adjustment of the stress field during the strong earthquakes.  本文首先叙述了地应力测量的原理和方法,包括应力计的结构、应力解除技术、室内模拟试验和观测可靠性的检验等。 在华北地区采用应力解除方法进行了地应力绝对值的测量。虽然测量大都是在地表以下30米内的浅部进行的,各测点最大主应力的方向也不完全一致,但从整个大区域来看,华北地区地应力场的主导方向为北西西到近东西方向的压应力。 大震后在震中区测得的应力值比离震中较远处测得的应力值要低。这可能反映了地震过程中的应力释放和震后应力的调整。  The TonghaiShiping area is located in South Yunnan proyince, Many large historical earthquakes occurred in the area. It is important to study seismotectonies here.In this paper, the method of geomorphological analyses, the surface vertical tectonic deformation since pleistocene in the area is obtaine, and right iateral displacement, 5KM and average movement velocity 5mm/yr are (calculated trom the vertical deformation by elastic dislocation theory. The results show that present and quaternary tectonic stress... The TonghaiShiping area is located in South Yunnan proyince, Many large historical earthquakes occurred in the area. It is important to study seismotectonies here.In this paper, the method of geomorphological analyses, the surface vertical tectonic deformation since pleistocene in the area is obtaine, and right iateral displacement, 5KM and average movement velocity 5mm/yr are (calculated trom the vertical deformation by elastic dislocation theory. The results show that present and quaternary tectonic stress fields are same, their principle compression axes are NNWSSE direction.The average interval of earthquakes as large as magnitude 7along the Qujiang fault is about 400 years. The data of earthquakes in this area show that there had been a gap of the large earthquake along the fault during 400 years before the large Tonghai earthquake.  本文采用地貌分析法确定了云南省通海—石屏地区第四纪中的地表垂直构造形变。应用这个形变资料,根据弹性位错理论求得区内几条活动断层的错距,其中曲江断裂的右旋水平错距为5公里。指出本区在第四纪中主要受北北西—南东东方向的压应力作用。根据地震裂缝、三边测量、定点基线测量和震源机制资料,求得本区现代构造应力场。作者发现它与第四纪构造应力场是相似的。由曲江断裂的平均5—7毫米/年的水平运动速度去估计,通海7.7级地震平均复发周期为300—400年。作者还指出通海地震前400年内,地震活动形成空区。并利用围空地震资料,求得空区内地震震级M与围空地震的断层总面积S之间存在经验关系, M=1gs3.8  The piezoresistive effect of Nsilicon at the [100] direction is analysed theoretically by means of the multivalley's model of band structure. A Nsilicon crystal is stressed in the (100) axis, in the meantime a electric field is applied along the (100) and the [010] direction resspectively. As a result the variation of conductivity takes place mostly because of the variation of electronic mobility when electrons transfer between the valleys. Based on this, the quantitative relationship between longitudinal... The piezoresistive effect of Nsilicon at the [100] direction is analysed theoretically by means of the multivalley's model of band structure. A Nsilicon crystal is stressed in the (100) axis, in the meantime a electric field is applied along the (100) and the [010] direction resspectively. As a result the variation of conductivity takes place mostly because of the variation of electronic mobility when electrons transfer between the valleys. Based on this, the quantitative relationship between longitudinal and transverse piezoresistance coefficient of Nsilicon is derived asMoreover, π12 sing is positive and π11 is engative. The derived result agrees well with the experimental result of C.S.Smith  本文应用能带结构的多谷模型,对N型硅在[100]方向的压阻效应进行了理论分析。当沿N型硅晶体的[100]轴施加压力并分别在[100]和[010]方向加电场时所引起的电导率变化的主要原因是:电子在能谷之间转移时,电子的迁移率发生变化。由此推导出N型硅的纵向压阻系数π_(11)与横向阻压系π_(12)之间的关系是: π_(12)=1/2π_(11)且π_(12)的符号是“正”,π_(11)的符号是“负”。这一结果与C.S.Smith的实验测量数据吻合。   << 更多相关文摘 
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