氯化铵热分解过程的机理判别和动力学研究

用热重法研究了氯化铵在氯气气氛下的热分解过程，通过实验数据对各种模型函数的试探表明：该过程受一维相边界反应机理控制，从氯化铵时晶体结构出发提出了氯化铵热分解理论模型，导出了理论速率公式。对固态反应中指前因子和活化能的理论意义进行了初步讨论。     

多指标会话式选择决策模型

社会经济系统的决策问题,大都是由多方面决策人员参加的,多指标的,具有确定可行方案集的方案择优或排序问题.本文针对这类带有普遍性的决策问题,在ELECTRE 方法的基础上,引入了目标规划的思想,将个体决策与群体决策有机地结合在一起,提出了一种多指标会话式选择决策模型。该模型具有人——机对话的特点,同时接受定量和定性信息,模型的多种功能交织在一起,不仅增加了方法的灵活性和适用性,而且交叉验证了决策的置信水平.此外,该模型还将指标价值和权放在一个比较适当的位置.这样既降低了对评价精度的要求,又使模型更加适用于社会经济问题.     

保鲜剂对切花百合的保鲜效果和生理作用

本文研究了不同保鲜剂配方对切花百合品种“阿卡普克”（Acapulco）的保鲜效果，主要测定了切花鲜重、cAT活性、花蕾长度、叶绿素。结果表明，D配方（30g／LS＋400mg／L8-HQC＋200mg／LGA）对延缓切花百合衰老的效果最佳。     

产酸克雷伯氏菌的吸附固定及其产氢研究

利用曲霉(Aspergillussp.XF101)所形成的菌丝球吸附产氢细菌产酸克雷伯氏菌(Klebsiella oxytocaHP1),当曲霉培养时间为50 h,菌丝球直径为1.3~1.8 mm,菌悬液pH值为5.0~6.0,吸附温度为30℃,吸附时间为1.5 h时,可获得最佳吸附效果,吸附率可达99%以上.利用菌丝球固定产氢菌可进行连续产氢,其最大产氢速率为18 mmol/L.h,平均产氢速率为1.7 mmol/L.h,持续产氢时间为15 d.     

A Lightweight Mobile RSVP for Unicast

This paper presents a lighter protocol, and it removes the multicast burdens from RSVP to adapt to unicast applications. At the same time, when RSVP is used in wireless networks, some issues about mobility raise popular concerns. The proposed protocol a lightweight mobile RSVP protocol, solves the problems by the following mechanisms： changeless flow identifier, a new state management and ＂refresh＂ mechanism.     

Behavior of MC3T3-E1 Osteoblast Cultured on Chitosan Modified with Polyvinylpyrrolidone

The physical and chemical properties of four kinds of modified chitosan materials made by blending chitosan with polyvinylpyrrolidone （PVP） were investigated. All four of these modified chitosan materials were hydrophilic with water contact angles ranging from 59°to 69°. Fourier transform-infrared spectra of the modified materials showed a new band at 1288 cm^-1, implying formation of a surface physical interpenetrating network structure. Enzyme linked immunosorbent assay results indicated that much less fibronectin was adsorbed on the modified materials than on only chitosan. The viability of MC3T3-E1 osteoblasts cultured on the materials was assessed by 3-（4,5-dimethyl-2-thiazolyl）-2,5-diphenyl- 2H-tetrazolium bromide assay. The results show that adding PVP10000 into the chitosan promotes adhesion of MC3T3-E1 osteoblasts on the modified materials, but has no effect on cell growth and proliferation; while adding PVP40000 reduces cell adhesion, growth, and proliferation. The results suggest that the increased hydrophilicity of the material surface does not always improve its biocompatibility, which will influence the selection and design of biomaterials.     

Microporous polymer electrolyte based on PVDF-PEO

Since Wright et al. found that the complex of PEO/alkali metals salt had the ability of ionic conductivity in 1973, in-depth studies have been carried out about various polymer electrolytes, which were applied to replacing the liquid electrolytes in lithium ion battery. At present, polymer electrolytes mainly include three kinds:     

Synthesis, characterization and properties of diamidodisilanes and azocyclosilane

Organosilicon compounds have been widely researched and have the maximum species besides hydrocarbons. In the progress of the research work, many scientists pay attention to the organic silicon compounds that have vari-ety reactive functional groups[1,2]. The difunctional disi-lanes are very active; they could react with not only the compounds containing reactive hydrogen atoms, but also the reactive polymers. Therefore, the disilanes with di-functional groups could be used as disilane substit…     

水体痕量有机污染物分析检测方法研究进展

对水体中的有机污染物进行了分类,评述了水体有机污染物分析中GC、GC-MS、GC-FTIR等方法的特性和适用范围,介绍了国内外各种分析方法应用于水体有机污染物分析的研究现状,并指出水体有机污染物分析方法的发展方向。     

基于MPC860嵌入式的无线通信测试平台系统测控板的设计

设计了一种基于MPC860的系统测控板,应用于无线通信测试平台,实现了数据接口、协议处理与系统控制等功能.着重介绍了MPC860和外围电路的设计,以及实现数据与通信接口的测控电路的设计,并给出了基于VxWorks的单板软件的设计思想,还就系统的硬件结构、接口逻辑以及软件功能的设计等相关问题提出了相应的解决方案.