空气动力学

Even's air-drying method for meiotic preparations from germ cells of mammalian testes improved by our laboratory was used and dynamic change of division figure of prophase 1 in the mouse treated by testosteronic propionas and stilbestrol was observed.

采用本室改良的Evens哺乳动物睾丸生殖细胞减数分裂空气干燥法制片技术，观察了用丙酸睾丸酮和已烯雌酚处理小鼠第一次减数分裂前期分裂相染色体的动力学变化。

In this paper,a water droplet motion model in thermal insulation countercurrent air flow is built based on the non-spherical particle drag coefficient,and the explicit formulation for terminal velocity is derived.

采用非球形颗粒的阻力系数关联式，建立了水滴在绝热逆流空气中的动力学方程，得出了水滴所受阻力及其最终沉降速度的计算方法。

The two-phase Cu-50Cr alloy in air at 70─900℃ was corroded nearly parabolically, except at 900℃ when the instataneous parabolic rate constat decreased with time.

Cu－50Cr合金在700—900℃空气中的氧化结果表明，合金的氧化动力学在700和800℃遵循抛物线速度规律，在900℃其瞬时抛物线速率常数随时间而降低。

Hot corrosion behavior of Na2SO_4 coated B-1900 alloy was studied in air at 827 and 750℃.Corrosion kinetics of the coated alloy was gravimetrically measured,and contents of water soluble ions in the reaction products were chemically analyzed.X-ray diffraction and EMP techniques were employed to determine the components and morphology of the corrosion product scale.

用涂 Na_2SO_4盐膜法研究高温合金 B-1900在827℃和750℃于空气中的热腐蚀行为，测定其腐蚀动力学曲线，用 X -射线衍射和电子探针元素面扫描方法分析腐蚀产物的相组成和成份，还对其中的水溶性离子进行化学定量分析。

6Fe_2O_3. 1.81 (CaO.2Fe_2O_3) The apparent activation energy of barite decomposition in air is 119.9 kJ/mol and the order of reaction is 1.3—1.4 obtained by kinetical calculation.

动力学计算表明，在空气中重晶石分解的表观活化能E~*=119.9kJ/mol，反应级数n=1.3—1.4。

Four main parts were included in this dissertation:(1) Precise measurement of Gvalues of hydrogen peroxide in the reactions of flavonoids with superoxide anion andα-hydroxy ethyl peroxyl radicals;(2) Kinetic studies of the reactions of typicalflavonoids with α-hydroxy ethyl peroxyl radicals;(3) HPLC-MS analysis of theproducts after γ-irradiating rutin ethanol solution saturated with air, a reactionmechanism was proposed;(4) Preliminary investigation on the reaction between rutinand peroxynitrite.

本论文的内容主要包括四部分：(1)黄酮类化合物在与超氧阴离子自由基以及α-羟乙基过氧自由基反应的过程中生成的过氧化氢G值的准确测定；(2)几种典型的黄酮类化合物与α-羟乙基过氧自由基的反应动力学研究：(3)空气饱和芦丁乙醇溶液经γ-辐照后产物的HPLC-MS分析及反应机理推测；(4)对芦丁与过氧亚硝酸盐的反应做了初步的探索。

The isothermal and non-isothermal kinetics of the oxidation of titaniferous slag in air were investigated by the thermal gravimetric technique.

摘 要：用热重法研究了高钛渣在空气中的等温和非等温氧化动力学。

Firstly, for the oxidation reactions of 1,2,4-trimethylbenzene to trimellitic acid, a simplified first-order series-parallel model was proposed, and kinetic equations in constant catalyst concentration and fixed solvent ratio were set up according to the above model.

首先，提出了偏三甲苯液相空气氧化为串、并联一级反应的简化模型。在固定催化剂浓度及溶剂比条件下，建立了偏三甲苯氧化及生成偏苯三酸的动力学方程。

During the motion process, the stagnation and back commutation occur and worsen the performances of circuit breaker. According to the real interruption process, a three-dimensional(3-D) model of arc motion under the effect of external magnetic field is built based on magnetohydrodynamic, which can predict the restriking phenomena. With air vents opened to 60%, the restriking phenomena occur under 3mT magnetic field; when the magnetic field is increased to 5mT, the restriking phenomena disappears.

该文以磁流体动力学为基础建立了三维空气电弧等离子体在外部磁场作用下运动的数学模型，此模型可以预测电弧的重击穿现象，并发现当灭弧室的出口面积为60%时，电弧在3mT磁场的作用下运动时出现了重击穿现象，而当磁场增大到5mT时重击穿现象消失。

The effects of jet interaction on forces and moments are described by interaction amplification factor, and the algorithm to calculate the interaction amplification factor is presented, then the motion model and the dynamics model of interceptor are established according to the previous analysis.

根据大量参考文献的结论，分析了侧向喷流射入拦截弹外流的流场特征，以干扰放大因子来描述干扰效应对力和力矩的影响，给出了放大因子的计算方法，进一步建立了喷流侧向力和空气动力作用下的导弹运动学和动力学模型。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。