淀粉胶的生产

概述了淀粉胶的生产工艺，阐述了氧化法制备淀粉胶的原理，并着重剖析了几个典型的生产配方，指出了生产工艺的改进方向。     

间苯二酚生产的技术经济分析

介绍了国内外间苯二酚生产的技术现状，对主要生产方法磺化法和氧化法在经济上作了对比分析，阐述了氧化法的特点，对间苯二酚的生产发展提出了建议。     

环己酮生产工艺的发展及研究进展

介绍了环己烷液相氧化法生产环己酮的工艺以及其改进情况。同时，还介绍了几种环己烷催化氧化制环己酮的新工艺研究进展。     

间苯二酚国内外生产技术现状

综述了国内外间苯二酚生产技术现状，并对主要生产方法氧化法和磺化法在经济上作了对比，阐述了氧化法的优点，并对国内间苯二酚的生产发展提出了建议。     

草酸的生产工艺评述

草酸的合成方法有很多种,工业生产方法主要有碳水化合物氧化法、一氧化碳偶联法、甲酸钠法、乙二醇氧化法、丙烯氧化法等,介绍了上述几种草酸合成工艺,评述了各工艺的优缺点,并对我国草酸工业的发展提出建议。     

环氧丙烷生产技术的发展及评价

简述了环氧丙烷生产技术的发展，第一代氯醇法、第二代间接氧化法、第三代直接氧化法，并对它们进行了评价。     

用钛白副产硫酸亚铁生产氧化铁系列颜料

介绍了用钛白副产硫酸亚铁为原料，采用液相氧化法生产铁红和铁黄，氢氧化亚铁凝胶氧化法生产铁黑，氯酸钠氧化-转化法生产透明氧化铁等生产工艺的化学原理及技术要点，同时也对锌铁黄和复合铁绿这两个特殊品种作了简单介绍。     

间苯二酚国内外生产技术现状

综述了国内外间苯二酚生产技术现状,并对主要生产方法氧化法和磺化法在经济上作了对比,阐述了氧化法的优点,并对国内间苯二酚的生产发展提出了建议。     

丙烯腈生产技术的研究进展

主要介绍了丙烯腈生产技术的发展历程。详细阐述了丙烯氨氧化法的典型工艺流程,丙烯氨氧化法生产工艺在扩能改造、工艺优化、＂三废＂治理、催化剂研发等方面的最新研究进展。简单叙述了丙烷氨氧化法的最新研究进展,并对丙烯腈生产技术的发展前景进行了展望。     

环氧丙烷生产技术进展

阐述了氯醇法、共氧化法、过氧乙酸法等环氧丙烷的生产方法，并对这三种生产方法进行了比较。     

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.     

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.     

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.     

ICP-MS法测定地球化学样品中As、Cr、Ge、V等18种微量痕量元素的研究

建立了测定地球化学样品中包括As、Cr、Ge、V等18种微量、痕量元素的ICP-MS方法。地化试样用HF-HNO3混酸分解后,以1 1 HNO3溶解干渣。由于制样不使用盐酸,避免了Cl对As、Cr、Ge、V的质谱干扰。用国家一级地球化学标准物质GBW 07309制备溶液优化仪器工作参数,并用于校准。方法测定限(6s)为:0.007~6.4μg/g,精密度(RSD%,n=12)为:29%~9.4%,经过国家一级地球化学标准物质的分析验证,结果与标准值吻合。方法已应用于国土资源调查的试样分析。