相对论磁化运动等离子体的介电张量

 定义了相对论磁化运动等离子体(MMP)的物理模型。利用微扰理论导出了系统的介电张量，研究发现，MMP具有完全不同于静态磁化等离子体介电张量的形式。对电磁波沿轴向传播的情况进行了数值模拟计算，结果表明，系统的共振频率随等离子体密度的增加而非线性增加，在相同的条件下，右旋波的共振频率高于左旋波的共振频率。对于传播的右旋电磁波，增加纵向磁场，共振频率提高，而对于左旋电磁波，增加纵向磁场，共振频率降低。     

Magnetic Behaviour of Antiferromagnetic Monolayer under an External Field

Magnetic behaviour of antiferromagnetic monolayer under external field is studied. This is the first time to calculate all components of spin statistical average of an anti ferromagnetic system with the random-phase approximation. To do so, a method is developed by many-body Green‘‘s function theory. Magnetization and susceptibility are investigated when external field is applied in either the x- or z-direction. The results are compared with the ferromagnetic monolayer.     

堆浸浸出率灰色动态GDM(1,1)预测研究

基于灰色系统理论扩展了GM(1,1)模型建模方法.给出了一些既改善原始数据列的光滑度,又减少还原误差的变换函数构造条件.首次将灰色动态模型结合变换函数应用于堆浸过程浸出率的预测.结果表明:该方法预测精度高,为实现浸出动力学未来行为的预测和控制提供了一种新的方法.     

Preliminary Investigation of Impurity and Radiation Behaviors in the Startup Phase of HL-2A Tokamak

As the startup phase of HL-2A operation and the first divertor tokamak device in China, it is important to identify the species of impurity, estimate the concentration of impurities and compare the different behaviors of radiation in limiter and divertor configurationt. In startup phase of HL-2A, glowing discharge cleaning （GDC） is used as a conventional wall conditioning technology and titanium gettering is used occasionally in closed divertor chamber during SN configuration discharges phase.     

光导纤维中电磁脉冲传播方程的初值问题

讨论了光导纤维中电磁脉冲传播所满足的偏微分方程的初值问题。对该问题在一类特殊的Sobolev函数空间中建立了整体存在性和唯一性。     

可分散性纳米SiO2/尼龙1010复合材料的结晶行为

采用熔融共混法制备了可分散性纳米SiO2/尼龙1010复合材料.通过X射线衍射和差示扫描量热法对尼龙1010及其复合材料的结晶行为进行了研究.结果表明,SiO2的加入作为结晶的异相成核点,使复合材料的结晶温度升高,熔融温度降低,使其结晶度稍有降低;SiO2的加入并没有改变尼龙1010的结晶形态,只是使尼龙1010的晶格尺寸发生了一定程度的改变.     

研发费用加计扣除的税务处理

研发费用的加计扣除，鼓励的是企业的研发行为。只有研发行为的存在，才可能形成新产品、新技术、新工艺。企业在税务上应该正确处理。以充分享受到税前加计扣除的税收优惠。     

经济衰退下的“诈骗捕捉手”

全球金融危机是一个超级有力的诈骗捕捉手。突然间，没有资金流入公司账户、投资计划和房地产市场，这种情形会迅速暴露出令人咋舌的诈骗行为。除非经济更为强大，否则这些诈骗行为会一览无遗。专家警告，更多的案件还会出现。     

Phase Transitions in a Mixture of Hard-Sphere Dipoles and Neutral Hard Spheres

Using the reference hypernetted chain （RHNC） integral equation theory and a rigorous stability analysis method, we investigate the phase behavior of a mixture of hard-sphere dipoles and neutral hard spheres based on the correlations of the homogeneous isotropic phase. Lowering the temperature down to the points where the RHNC equations fail to have a solution, several ttuctuations strongly increase. At low densities our results indicate the onset of ／ chain formation, which is similar with the pure DHS system. At high densities, the results indicate the appearance of isotropic-to-ferroelectric transitions （small neutral hard spheres concentrations） and demixing transitions （large neutral hard spheres concentrations）.     

大学生考前冠周炎发病率高的多因素分析

目的：分析探讨大学生考试前的应急行为和心理状态对冠周为发病率的影响。方法：总结被调查人群冠周炎的病史资料，归纳病因，统计处理考前与平时冠周炎的发病率，分析考前冠周炎发病率高的多种因素。结论：考前应急可能诱发或加重急性智齿冠周炎的发病，从而提高了冠周炎的发病率；医务工作者应当关心大学生病员的心理因素对疾病的影响。