基于Pro/Engineer开发平台的塑料模具标准件库的建立

研究了在Pro／Engineer(Pro／E)环境下，利用其Pro／TOOLKIT二次开发接口建立标准模具零件库，完成零件自动造型及利用Program程序实现零件参数化、变量化的技术过程，通过Pro／TOOLKIT函数设计的对话框，实现人机交互，并给出了该标准件库在开发的Pro／E系统中成功应用的实例。     

基于Pro/E的三维铸造工艺CAD系统的设计与实现

三维工艺设计应用到铸造工艺CAD领域。它有利于对铸件实体剖分、凝固进程模拟以及缺陷分析的研究。Pro／E本身具有较强的三维实体造型功能。采用Pro／E自带的二次开发软件包Pro／Toolkit，以及VisualC＋＋的一个重要软件资源MFC，充分利用VC开发环境提供的先进工具,实现了程序界面的可视化设计，并建立了铸造工艺参数数据库，实现了对数据的调用、修改、添加和删除等功能,与Pro／E的UDF相结合。从而以Pro／E为平台开发出了一款三维铸造工艺CAD系统。     

基于Pro/E平台下的齿轮注塑模设计系统的研究

介绍了在中文版Pro／EngineerWildfire平台下利用Pro／Toolkit开发工具在Visual C＋＋6．0环境中进行二次开发的关键技术，实现了齿轮注塑模CAD系统中齿轮塑件、齿轮注塑模凸、凹模以及模架的三维造型图的快速自动生成，并且给出了详细设计步骤和实现方法。该系统界面友好，操作方便简洁，降低了Pro／E软件的使用难度，减少了模具设计的工作量，大大提高了注塑模的设计效率，具有较大的使用价值。     

基于Pro/E二次开发的连杆参数化设计技术

论述了在Pro/E Wildfire环境下,利用其开发工具参数结合关系式功能来实现连杆参数化造型的方法,对菜单开发设计和UI对话框开发设计的关键技术进行研究.利用Pro/E二次开发工具Pro/Toolkit和族表开发技术,通过动态连接库方式,成功实现了与Pro/E Wildfire 4.0系统集戍的发动机连杆参数化设计系统的二次开发.     

基于Pro/E的渐开线圆柱齿轮参数化精确建模

介绍了应用Pro／E实现圆柱齿轮的三维精确建模的方法．推导了有关精确建模所需的几个重要关系式；介绍了应用二次开发工具Pro／Program实现圆柱齿轮的参数化设计的方法.     

面向塑料注射模具的三维参数化系统的研究与实现

针对企业在塑料注射模具设计过程中存在的问题(如大量的重复劳动、CAD的运作效率和制品的质量较低、产品的开发周期较长等)，利用VisualC 6．0并以Pro／Engineer Wildfire为平台进行二次开发，并建立了实用性较广的三维参数化系统。实例结果表明：该系统提高了Pro／Engineer的运作效率，简化了Pro／Engineer的操作难度、优化了Pro／Engineer的操作界面，达到了预期的研究目的。     

基于Pro／E参数化斜齿轮建模技术

应用Pro／E软件的参数化造型功能，不需要二次开发，直接创建渐开线斜齿圆柱齿轮模型，对直齿、人字齿齿轮的建模具有借鉴作用。     

基于Pro/E的齿轮注塑模CAD系统的研究

介绍了在Pro/E平台下利用Pro/Toolkit二次开发工具在Visual C 6.0集成开发环境下对塑料齿轮的注塑模CAD系统进行二次开发的关键技术,成功地实现了齿轮注塑模具零件的三维图形的自动生成。经试用,该系统操作方便简洁,大大提高了注塑模的设计效率,具有较大的实用价值。     

注塑模具标准模架的二次开发

基于Pro／E二次开发的注塑模具标准模架设计系统，能够调用开发的外部数据库对零件库零件进行参数化设计。并可按特定的方式装配成标准模架；同时能够实现装配过程的动态模拟；还可按照用户需求输出零件和模架的工程图及零件清单。     

使用VC开发ProTOOLKIT应用程序

本文介绍Pro／ENGINEER二次开发工具包ProTOOLKIT，提出了用VC开发Pro／TOOLKIT应用程序的方法，并给出了实现方案和编程实例。     

Insect antifeedant properties of anthranoids from the genusVismia

Vismiones and ferruginins, representatives of a new class of lypophilic anthranoids from the genusVismia were found to inhibit feeding in larvae of species ofSpodoptera, Heliothis, and inLocusta migratoria.     

Direct observation of freeze-thaw instability of latex coatings via high pressure freezing and cryogenic SEM

Despite its industrial importance, the subject of freeze-thaw (F/T) stability of latex coatings has not been studied extensively. There is also a lack of fundamental understanding about the process and the mechanisms through which a coating becomes destabilized. High pressure (2100 bar) freezing fixes the state of water-suspended particles of polymer binder and inorganic pigments without the growth of ice crystals during freezing that produce artifacts in direct imaging scanning electron microscopy (SEM) of fracture surfaces of frozen coatings. We show that by incorporating copolymerizable functional monomers, it is possible to achieve F/T stability in polymer latexes and in low-VOC paints, as judged by the microstructures revealed by the cryogenic SEM technique. Particle coalescence as well as pigment segregation in F/T unstable systems are visualized. In order to achieve F/T stability in paints, latex particles must not flocculate and should provide protection to inorganic pigment and extender particles. Because of the unique capabilities of the cryogenic SEM, we are able to separate the effects of freezing and thawing, and study the influence of the rate of freezing and thawing on F/T stability. Destabilization can be caused by either freezing or thawing. A slow freezing process is more detrimental to F/T stability than a fast freezing process; the latter actually preserves suspension stability during freezing. Presented at the 82nd Annual Meeting of the Federation of Societies for Coatings Technology, October 27–29, 2004 in Chicago, IL. Tied for first place in The John A. Gordon Best Paper Competition.     

Many Drugs of Abuse May Be Acutely Transformed to Dopamine,Norepinephrine and Epinephrine In Vivo

It is well established that a wide range of drugs of abuse acutely boost the signaling of the sympathetic nervous system and the hypothalamic–pituitary–adrenal (HPA) axis, where norepinephrine and epinephrine are major output molecules. This stimulatory effect is accompanied by such symptoms as elevated heart rate and blood pressure, more rapid breathing, increased body temperature and sweating, and pupillary dilation, as well as the intoxicating or euphoric subjective properties of the drug. While many drugs of abuse are thought to achieve their intoxicating effects by modulating the monoaminergic neurotransmitter systems (i.e., serotonin, norepinephrine, dopamine) by binding to these receptors or otherwise affecting their synaptic signaling, this paper puts forth the hypothesis that many of these drugs are actually acutely converted to catecholamines (dopamine, norepinephrine, epinephrine) in vivo, in addition to transformation to their known metabolites. In this manner, a range of stimulants, opioids, and psychedelics (as well as alcohol) may partially achieve their intoxicating properties, as well as side effects, due to this putative transformation to catecholamines. If this hypothesis is correct, it would alter our understanding of the basic biosynthetic pathways for generating these important signaling molecules, while also modifying our view of the neural substrates underlying substance abuse and dependence, including psychological stress-induced relapse. Importantly, there is a direct way to test the overarching hypothesis: administer (either centrally or peripherally) stable isotope versions of these drugs to model organisms such as rodents (or even to humans) and then use liquid chromatography-mass spectrometry to determine if the labeled drug is converted to labeled catecholamines in brain, blood plasma, or urine samples.     

Ethanol and (−)-α-Pinene: Attractant Kairomones for Bark and Ambrosia Beetles in the Southeastern US

In 2002–2004, we examined the flight responses of 49 species of native and exotic bark and ambrosia beetles (Coleoptera: Scolytidae and Platypodidae) to traps baited with ethanol and/or (−)-α-pinene in the southeastern US. Eight field trials were conducted in mature pine stands in Alabama, Florida, Georgia, North Carolina, and South Carolina. Funnel traps baited with ethanol lures (release rate, about 0.6 g/day at 25–28°C) were attractive to ten species of ambrosia beetles (Ambrosiodmus tachygraphus, Anisandrus sayi, Dryoxylon onoharaensum, Monarthrum mali, Xyleborinus saxesenii, Xyleborus affinis, Xyleborus ferrugineus, Xylosandrus compactus, Xylosandrus crassiusculus, and Xylosandrus germanus) and two species of bark beetles (Cryptocarenus heveae and Hypothenemus sp.). Traps baited with (−)-α-pinene lures (release rate, 2–6 g/day at 25–28°C) were attractive to five bark beetle species (Dendroctonus terebrans, Hylastes porculus, Hylastes salebrosus, Hylastes tenuis, and Ips grandicollis) and one platypodid ambrosia beetle species (Myoplatypus flavicornis). Ethanol enhanced responses of some species (Xyleborus pubescens, H. porculus, H. salebrosus, H. tenuis, and Pityophthorus cariniceps) to traps baited with (−)-α-pinene in some locations. (−)-α-Pinene interrupted the response of some ambrosia beetle species to traps baited with ethanol, but only the response of D. onoharaensum was interrupted consistently at most locations. Of 23 species of ambrosia beetles captured in our field trials, nine were exotic and accounted for 70–97% of total catches of ambrosia beetles. Our results provide support for the continued use of separate traps baited with ethanol alone and ethanol with (−)-α-pinene to detect and monitor common bark and ambrosia beetles from the southeastern region of the US.     

Novel polyurethane coating technology through glycidyl carbamate chemistry

Glycidyl carbamate chemistry combines the excellent properties of polyurethanes with the crosslinking chemistry of epoxy resins. Glycidyl carbamate functional oligomers were synthesized by the reaction of polyfunctional isocyanate oligomers and glycidol. The oligomers were formulated into coatings with several amine functional crosslinkers at varying stoichiometric ratios and cured at different temperatures. Properties such as solvent resistance, hardness, and impact resistance were dependent on the composition and cure conditions. Most coatings had an excellent combination of properties. Studies were carried out to determine the kinetics of the curing reaction of the glycidyl carbamate functional oligomers with multifunctional and model amines. Detailed kinetic analysis of the curing reactions was also undertaken. The results indicated that the glycidyl carbamate functional group is more reactive than a glycidyl ether group. Presented at the 82nd Annual Meeting of the Federation of Societies for Coatings Technology, on October 27–29, 2004, in Chicago, IL.