Kinetic Studies on Reactions Between Monomethylhydrazine and Fe^3＋ as Well as N,N-Dimethylhydroxylamine and Fe^3＋ by Measuring Potential of Fe^3＋/Fe^2＋

The kinetic studies on the reactions between monomethyldrazine and Fe^3＋ as well as N,N-dimethyl- hydroxylamine and Fe^3＋ in nitric acid system are performed by measuring open-circuit potential of Fe^3＋/ Fe^2＋. The effect of some factors such as the concentration of MMH or DMHAN, the concentration of nitric acid, ionic strength, temperature and the concentration of Fe^3＋ on the reaction rate is also studied.     

氢氧化钾溶液淋滤托尔盖低质铝矿过程的动力学研究

所述研究为氢氧化钾溶液淋滤托尔盖地区粘土样品的过程，通过实验溶液浓度，温度和反应持续时间对样品中氧化硅转入氢氧化钾溶液百分率（提取率）的影响总结出过程的动力学规律。     

通过细的夹杂物粒子细化凝固显微组织和奥氏体晶粒

AEREX350为变形镍-钴基合金，广泛用于航天紧固件、燃气轮机和石化工业等高质量产品。虽已使用多年，但对该材料在不同工艺条件下的显微组织和强化机理研究有限。     

125I标记重组L-天冬酰胺酶

重组L－天冬酰胺酶样品经SDS－PAGE和反相HPLC检测分别为单一蛋白带和单一峰，采用氯胺T法对重组L－天冬酰胺酶进行125I标记，再经Sephadex G-25柱分离纯化，收集第一峰放射活性最高的溶液，经反相HLPC分离，γ－计数器检测，125I重组L－天冬酰胺酶的放化纯度为95％，双向免疫扩散法检测结果表明，标记物具有与重组L－天冬酰胺酶一样的生物活性。     

阴极爆炸发射电子电离气体原初过程的动力学模拟

基于阴极爆炸发射电子和电子对气体的碰撞电离模型 ,用胞中粒子 (PIC)模拟方法对单间隙冷阴极气体放电过程中阴极爆炸发射产生的电子和电子碰撞电离产生质子的动力学特性进行了研究。分别给出了在 1.33× 10 - 2 Pa氢气压和 10kV间隙电压下 ,气体放电过程中电子和质子的空间和相空间分布、速度统计分布以及轴线上电荷密度分布 ,分析了阴极爆炸发射电子电离过程。模拟结果表明 ,间隙中电子的最大速度达 5 .8× 10 7m/s ,而只有少数的气体电离产生的质子最大速度达到 1.3× 10 6 m/s。     

188Re-HEDP注射液药物代谢动力学研究

将药物静脉注射到动物体内 ,以观察188Re -HEDP注射液在动物体内代谢动力学的特征。结果表明 ,滞留在荷瘤大鼠患骨中的放射性比在正常骨中的多 (P <0 .0 5 ) ;小鼠 72h内排泄放射性累积百分率约为 82 %(其中尿液排泄为 80 %) ;体外血浆蛋白结合率为 86 .4 %± 0 .30 %。说明该药物是亲骨药物 ,血清除快符合药物代谢动力学二室模型 ,大部分的药物以原形从肾排出。     

A Cold Model Aerodynamical Test of Air-Staged Combustion in a Tangential Firing Utility Boiler

The purpose of this paper is to present the flow field in the 300MW tangential firing utility boiler that used the Low NOx Concentric Firing System （LNCFS）. Using the method of cold isothermal simulation ensures the geometric and boundary condition similarity. At the same time the condition of self-modeling is met. The experimental results show that the mixture of primary air and secondary air becomes slower, the average turbulence magnitude the relative diameter of the tangential firing enlarges of the main combustion zone becomes less and when the secondary air deflection angle increases When the velocity pressure ratio of the secondary air to the primary air （p2/p1） enlarges, the mixture of the secondary air and the primary air becomes stronger, the average turbulence magnitude of the main combustion zone increases, and the relative diameter of the tangential firing becomes larger. Because the over fire air （OFA） laid out near the wall has a powerful penetration, the relative diameter of the tangential firing on the section of the OFA is very little, but the average turbulence magnitude is great. When the velocity pressure ratio of the OFA to the primary air POFA/p1 increases, the relative diameter of the tangential firing on the section of the OFA grows little, the average turbulence magnitude becomes larger and the penetration of the OFA becomes more powerful.     

现代室内设计的思考和实践——以巢湖鼎力大酒店改造工程为例

室内是建筑的组成部分,内的艺术制作必然会受到建筑思潮的响,室内又是人类生活的重要组成部分,它与当时的社会思潮及艺术思潮也有密切的联系,室内设计不同于一般的纯艺术,它的实用性很强,它要依赖于人的生活方式,依赖于生产技术手段,装饰材料的更新、发展,更依赖于经济条件,装饰材料的选用和组合应遵循一定的原则。     

2024合金T8511状态型材工艺优化

本文详述了2024合金T8511状态型材淬火及时效工艺优化。获得最佳工艺制度，使强度指标高于GBn222—84标准。     

天然气压缩机气阀的动态分析

通过对往复式天然气压缩机气阀进行动态分析,导出了其动力学模型,选用多种弹力取值对气阀运动进行了数值计算,得到了反映气阀弹力与阀片运动之间的关系,揭示了气阀设计与其流通特性和动力学特性之间的规律,讨论了气阀弹力对气阀寿命以及压缩机性能的影响,为气阀的更好设计提供了理论依据.