小型中央空调机组的发展前景

小型中央空调同组以其性能可能，价格达中，安装方便，使用灵活，占用空间小，操作简单，维护费用低等特点，较好的满足了市场的需求，受到了用户的青睐，在住宅，别墅，餐厅，商场，写字间等外采用愈来愈多。本文分析了家用空调器的缺点，解释了小型中央空调机组的由来，说明了小型中央空调机组的特点和分类，阐述了小型中央空调机组的发展前景，为小型中央空调机组的广泛使用奠定了基础。     

真空微电子管的研究

综合了已有的真空微电子器件理论的研究成果，提出了真空微电子三极管优化模型，并且进行了初步计算，得到了真空微电子三极管优化模型的理论特性，同时，利用独创的无版光刻工艺制作了真空微电子三极管，进行了测试，并且与结果进行了比较。     

助磨介质作用下旋窑熟料微细化过程的研究

研究了助磨剂作用下旋窑熟料的微细化过程，结果表明，助磨剂在不同粉磨阶段的作用机理不同，在相同的粉磨时间下助磨剂提高了粉磨细度，改善了物料的颗粒分布，改变了颗粒形貌，还改变了粉磨物料的微观结构，加剧了物料的晶格畸变，晶格缺陷及无定形比，加速了物料结构中化学键的破坏，尤其是C3S矿物中Si-O键的断裂，从而增加物料的反应活性。     

湖北建设机械股份有限公司“八五”技术改造工程设计

该企业“八五”技改肾以开发新产品，提高产品制造水平，提高产品产量和质量，提高经济效益为目的，调整了生产布局，理顺了工艺流程，新建了铸钢等厂房，引起了先进的工艺装备，淘汰和改造了部分老设备，组成了产品装配线，建立了油漆生产线，增强了产品测试手段，组建了计算机工作站，技改后，产品品种、产量及经济效益都有了较大幅度的增长。     

日本氯系,氟系清洗剂替代物的进展

简述了氯系，氟系清洗剂的性质，特点，用途以及限制使用的最新动向。介绍了日本在氯系，氟系清洗剂替代物的研究，开发，使用方面的最新进展，就其性能，清洗工艺，清洗机械及设备作了概述，同时还展示了其开发的前景及意义。     

管道结构振动有限元法分析及减振研究

 对管道振动机理进行了分析，运用弹性力学理论，建立了管道系统结构振动数学模型，并采用有限元方法，通过计算机仿真，分析了管道系统的结构振动，得出了管道系统结构振动固有频率和振型分布，掌握了结构参数对结构振动的影响规律，并进行了实验验证．     

(Sr,Pb)TiO3超微粉体的制备和性质

应用草酸盐共沉淀法制备（Ｓｒ，Ｐｂ）ＴｉＯ３超细粉体，分析了共学淀产物的热分解过程，确定了昌化温度和煅烧条件，同时，测量了粉示的晶粒尺寸，标定了材料的晶体结构，试验了粉体的烧结条件。     

RBF网络及其在卫星姿态控制中的应用

提出了一种基于RBF网络扰动力矩补偿的控制技术，通过在传统PID控制的基础上，引入RBF网络补偿环节，进一步抑制了扰动力矩的影响，提高了卫星姿态控制精度，首先给出了RBF网络的学习算法，然后根据全补偿原则设计了神经网络补偿姿态控制方案，最后结合某型卫星的姿态控制系统设计实例，进行了数学仿真，结果表明：有RBF网络补偿的系统，姿态的稳态精度得到了明显的改善。     

电真空器件程控排气的研究

简要介绍了应用单片机实现电真空器件的程控真空排气，优化了工艺，保证了真空排气工艺的一致性和稳定性，提高了产品的质量，其程控系统设计合理，抗干扰能力强，操作简便。     

检验机构如何培育核心竞争力

我国加入WTO时承诺，2005年12月20日以后将允许外资检验服务提供者在我国设立独资子公司，这就意味着我国将全面开放检验市场，国内的检验机构被融入了国际检验市场，面对着国内、国际两方面的竞争。为此，近几年来，各地检验机构在政府的支持下，通过自身的努力，纷纷建起了新大楼，购置了先进的仪器设备，引进了专业技术人才，迅速地增强了检验实力，以应对即将到来的与国外检验机构同台竞技。如此以来，就可以立于不败之地了吗？     

Multidisciplinary in-depth investigations of head-on and left-turn road collisions

To enhance traffic safety, a multidisciplinary Road Accident Investigation Team was established in Denmark for a 2-year trial period. The objective was to conduct in-depth investigations of specific types of accidents, and to identify effective preventive measures. The team consisted of a road engineer, a vehicle inspector, a police superintendent, a psychologist and a physician. Seventeen serious head-on collisions as well as 17 left-turn collisions were analysed. In collecting data, police reports were supplemented by the team's investigation of accident sites and vehicles involved, and interviews were carried out with the involved road users and witnesses. The drivers, to whom the accident factors were primarily related in the head-on collisions, were characterised by their conscious risk-taking behaviour. They were all males; several of them were under age 40 and had earlier traffic and/or drug convictions. The main accident factors were excessive speed, drunk driving and driving under the influence of illegal drugs. In the left-turn accidents, the most common accident factors were attention errors, and it was also noted that elderly drivers ( > 74) were over-represented. The synergy effect of working as a multidisciplinary team proved fruitful. It resulted in a more precise knowledge of the road accident circumstances and of contributing factors leading up to the accidents. Due to the great demand on resources, only a limited number of accidents could be analysed, but the results provide a basis for further and more targeted research.     

Does the probability of DWI arrest fall following participation in DWI and hybrid drug treatment court programs?

Using North Carolina administrative data, this study examined recidivism following participation in specialty hybrid drug and driving while intoxicated (DWI) court programs. Three court program participation levels were considered—being referred to, enrolling in, and completing a specialty court program. Measures of DWI recidivism were: arrest and total number of arrests for DWI, and being convicted of DWI during follow-up periods of two and, alternatively, four years. Propensity score matching was used to obtain comparable control groups. Using a four-year follow-up, persons convicted of a DWI who completed a specialty court program were associated with a greater reduction in DWI re-arrests and re-convictions than did matched individuals who were never referred to a specialty court program. DWI courts were more effective in reducing re-arrests than hybrid drug courts were. Although promising from the vantage point of participants, few persons convicted of a DWI were referred to either court type, thus limiting this strategy’s potential effectiveness in reducing DWI.     

Control of nanostructures in PVA,PVA/chitosan blends and PCL through electrospinning

Aqueous solutions of polyvinyl alcohol (PVA) were electrospun and its characteristics were studied as a function of applied potential, tip-target distance and solution flow rate. Solutions of PVA and chitosan were homogeneously mixed and electrospun to result in blend nanofibres and their properties were investigated. Conditions were revealed under which multiscale bi-modal fibres could be electrospun in a single step, producing structures that have potential applications in tissue engineering. Electrospun fibres having a bimodal size distribution of poly(caprolactone) (PCL) were also fabricated using a modified electrospinning setup. Nanofibrous microporous PVA scaffolds were fabricated using a cryogenic grinding method with subsequent compaction. Such multiscale porous structures would offer ideal matrices for tissue engineering applications.     

Growth and study of mixed crystals of Ca-Cd iodate

Mixed crystals of calcium-cadmium iodate were grown by a simple gel technique using diffusion method. The optimum conditions were established by varying various parameters such as pH of gel solution, gel concentration, gel setting time, concentration of reactants etc. Crystals having different morphologies and habits were obtained. Prismatic, dendritic crystals of calcium-cadmium iodate and prismatic needle shaped, hopper crystals of mixed iodate were obtained. Some of them were transparent, some transluscent and a few others were opaque. The crystals were characterized using FT-IR, EDAX, XRD, TGA and DTA.     

Cold model experiment on dynamic behavior of dross in hot dip plating bath

The motions of top and bottom dross in a continuous hot dip plating bath were investigated using a transparent cold model vessel with a reduced scale of one-tenth. The flow field in the model bath was classified into three regions as usual; the entry region, the exit region, and the region enclosed with a belt. This belt was used as a model for a strip. Polystyrene particles were used as models both for the top and bottom dross while NaCl aqueous solutions of different densities were used as models for plating melts. The motions of model particles were observed by eye inspection and by using a high-speed video camera. Local particle frequency and particle holdup were measured with a newly developed sensor. Typical streak lines for the top and bottom dross particles were similar to main stream lines in the bath. Both the top and bottom dross particles were rich in the region enclosed with the belt. A lot of top dross particles floated on the bath surface near the side walls, while many bottom dross particles stayed on the bottom wall in the entry region.     

Self-healing mortars based on hollow glass tubes and epoxy–amine systems

In the present work key parameters of different epoxy systems (such as viscosity and gel time) were evaluated to be used as healing agents when were included in a cement matrix. Epoxy systems were encapsulated in hollow glass tubes and were introduced in a mortar matrix. Samples were preloaded under three point bending in order to create a crack and release the healing system. After that, they were loaded to measure the residual strength and estimate the healing efficiency. The influence of temperature and the volume of the glass tubes were examined. Regarding the healing efficiency, a higher temperature led to an improvement of autogenous healing of the mortar matrix and a higher degree of crosslinking of the healing agent. For the studied systems, the use of glass tubes with smaller diameter containing the healing system seemed to be better in order to maintain the mechanical properties of the mortar-based composite.     

Preparation,physical characterization and pharmacokinetic study of paclitaxel nanocrystals

Paclitaxel (PTX) is a natural broad-spectrum anticancer drug with poor aqueous solubility. PTX nanocrystals were formulated to improve the water solubility, and PTX nanosuspensions were prepared using anti-solvent precipitation, and then organic solvent and surfactants were removed by filtering through a vacuum system. The physical characterization of PTX nanocrystals were measured by transmission electron microscope, X-ray diffraction and differential scanning calorimetry. In addition, saturation solubility, in vitro release, stability and pharmacokinetic characteristics were examined. The average particle size of PTX nanocrystals was ～200?nm, and they had a stable potential and a uniform distribution. Paclitaxel nanocrystals can effectively improve drug solubility and in vitro release. PTX pharmacokinetic and tissue distribution studies were compared after intravenous administration of nanocrystals versus a commercial injection formulation. PTX nanocrystals were rapidly distributed with a longer elimination phase. Moreover, tissue distribution indicated that PTX nanocrystals are mainly absorbed by the liver and spleen and may offer reduced renal and cardiovascular toxicity which may reduce side effects.     

软模板法聚苯胺微米管的制备与表征

以同时带有亲水基(-SO3)和疏水基(-C14O14N3)而具有两性分子结构的甲基橙为掺杂剂,利用软模板法制备聚苯胺微米管,通过扫描电镜(SEM)和透射电镜(SEM)对制得的聚苯胺微观形貌进行表征.分别控制盐酸与苯胺的摩尔比为0.5、1.5和2.5,两者摩尔比值为0.5时得到聚苯胺不规则颗粒,两者摩尔比值为1.5和2.5时得到聚苯胺微米管.利用傅里叶红外光谱(FTIR)和紫外-可见光谱(UV-vis)对聚苯胺的分子结构进行表征,结果表明产物是质子化掺杂的聚苯胺,甲基橙阴离子基团(C14O14N3SO3-)已掺杂到聚苯胺分子链中.     

纳米纤维束的制备及力学性能研究

采用静电纺丝法制备出了纳米级、亚微米级纤维,采用尖角圆盘收集成具有定向排列的单向纤维束,考察了圆盘转速对纤维定向性的影响.为提高纤维的强度和模量,对收集到的纤维束进行了热处理、拉伸、加捻、定型等后处理工艺,再将多股定型的纤维束编织成线.研究了上述工艺参数对纤维束力学性能的影响,选取最佳工艺参数编织纤维束,并研究了编织线的力学性能.良好的性能预示其在纺织、生物医学等领域具有潜在的应用前景.     

Cold model experiment on dynamic behavior of dross in hot dip plating bath

The motions of top and bottom dross in a continuous hot dip plating bath were investigated using a transparent cold model vessel with a reduced scale of one-tenth. The flow field in the model bath was classified into three regions as usual; the entry region, the exit region, and the region enclosed with a belt. This belt was used as a model for a strip. Polystyrene particles were used as models both for the top and bottom dross while NaCl aqueous solutions of different densities were used as models for plating melts. The motions of model particles were observed by eye inspection and by using a high-speed video camera. Local particle frequency and particle holdup were measured with a newly developed sensor. Typical streak lines for the top and bottom dross particles were similar to main stream lines in the bath. Both the top and bottom dross particles were rich in the region enclosed with the belt. A lot of top dross particles floated on the bath surface near the side walls, while many bottom dross particles stayed on the bottom wall in the entry region.