利用冷凝水来提高分体式空调器的能效比

通过分析风冷和蒸发式冷却两种方式的优缺点，提出增设小型蒸发冷却式冷凝器，回收分体式空调器的冷凝水用以制冷的新方法，并进行了理论分析和实例计算．结果表明，利用冷凝水的汽化潜热降低再冷温度．空调器的制冷能力可增大13．2％，能效比提高较多，迭到了节能的目的。     

发电机内冷水微碱化技术的应用

3号发电机内冷水运行中存在pH降低、电导率经常超标、水混床出水呈微酸性等问题,经过对小混床改造,实施微碱化技术后,内冷却水水质全部合格.     

Syntheses of Ferrocenyl Schiff Bases Using Molecular Sieves and AlCl3 as Catalysts

In order to study the donor ability of ferrocenylimines as directing ortho metalation group（DMG） to lithium alkylide to prepare planar chiral ferrocene, a series of ferrocenyl schiff bases were synthesized by new methods using molecular sieves（0.4nm） and AlCl3 as catalysts. The reaction periods were reduced using these two catalysts in contrast with Al2O3, which was a traditional method used in the literature. In addition, as an important feature of these schiff bases, we found that they were unstable as oils in air or when filtrated through silica gel, but were stable as solids. The structures of the new compounds were confirmed by IR, ^1H NMR and HRMS.     

Antibacterial Characteristics of ZnO-CeO2 Nano-Powder Prepared by Laser Vapor Condensation

Microbialpollutionandcontaminationbymicroor ganismshaveproducedvarioustroublesinindustryandothervitalfields ,suchasdegradationandinfec tion .Thenewpasteurizationandantibacterialtech niqueshavebeendemandedandstudied[1] .Inrecentyears ,therareearthmetaloxid…     

延展表面凝结液膜的动量积分方法

采用动量积分方法分析压水堆发生失水事故时在安全壳的内表面上的液膜凝结、再浸润和蒸发过程。由凝结液膜的质量和动量守恒方程导出了凝结液膜在延展表面的子午线方向平均速度的积分-微分方程。假设液膜以层流的方式流动，把导出的积分-微分方程变成容易进行数值积分的液膜速度的一阶常微分方程，由此求得液膜厚度分布。液膜能量守恒方程的解给出了安全壳内壁面的温度分布。     

具有蒸气过热的R-134a在螺旋管内凝结换热的实验研究

对具有蒸气过热的替代制冷剂R-134a在螺旋管内的对流凝结换热特性进行了实验研究.在制冷剂R-134a的质量流量变化范围为100(400kg/(m2s)和蒸气过热度为3.8℃和8.4℃的条件下,得到了螺旋管内具有蒸气过热的R-134a对流凝结换热特性的实验数据.实验结果表明,蒸气过热对R-134a在螺旋管内的凝结换热特性具有明显的影响.通过与已有研究结果的比较,简要分析了蒸气过热对R-134a在螺旋管内凝结换热特性的影响机理.     

Superfluid vs Ferromagnetic Behavior in a Bose Gas of Spin-1/2 Atoms

We study the thermodynamic phases of a Bose gas of spin-1/2 atoms in the Hartree-Fock approximation. Our main result is that, for repulsive or weakly attractive inter-component interaction strength, the superfluid and ferromagnetic phase transitions occur at the same temperature. For strongly attractive inter-component interaction strength, however, the ferromagnetic phase transition occurs at a higher temperature than the superfluid phase transition. We also find that the presence of a condensate acts as an effective magnetic field that polarizes the normal cloud. We finally comment on the validity of the Hartree-Fock approximation in describing different phenomena in this system.     

Calculations of the Elastic Scattering Properties of Ultra-cold Francium Isotopes

The calculations of the elastic scattering properties of ultra-cold francium isotopes are reported in detail. A parametric model potential for the triplet molecular states of the Fr₂ is represented, and the scattering lengths a_t and the effective range r_e are calculated using WKB and Numerov methods for Fr--Fr in the triplet state. The convergence of these scattering properties depending on a K⁰ parameter and core radius is also investigated using two methods: Quantum Defect Theory and analytical formula of Symskoviski.     

Cage and ladder structures of silsesquioxanes characterized by UV-MALDI-TOF mass spectrometry

The molar mass distribution of SSO in the first generation derived from the hydrolytic condensation of two trialkoxysilanes, [3- (Methacryloxy) propyl] trimethoxysilane (MPMS) and vinyltrimethoxysilane (VMS), are determined by UV-MALDI-TOF MS. The comparisons of theoretical masses with experimental masses are calculated using the proposed compounds, which are assigned to formulas Tn (OH)_m, T_n (OMe)_y or T_n(OH)_x(OMe)_y[T=RSiO_(1.5-(x+y)/2n), R=——(CH_2)_3OOCCH(CH_3)CH_2 and——CHCH_2]. Both the proposed cage and ladder structures of SSO derived from similar sol-gel process of monomers are illustrated. The causes for the difference in structures between SSO_M and SSO_v is discussed as well.     

磁性PF微球的制备及性质

运用缩合聚合法制备出PF凝胶，并在此基础上以共沉淀法合成出磁性PF微球，该微球呈珠状，平均粒径为10-20nm，具有较大的蛋白质固载量，可作为载体对多种酶及蛋白质加以固定。结果表明：当PF凝胶的制备条件为：对笨二酚11．1g、甲醛30mL和盐酸4mL时，所制PF凝胶的蛋白固载量最大；当磁性PF微球的制备条件为：PF凝胶添加量2g，pH值在3—4之间，固定时间2h，磁性PF微球能取得最高的蛋白固载量，同时研究了磁性PF微球的磁学性能。