电子供体影响Cr（Ⅵ）光还原速度的ESR／全息法研究

分别用电子自旋共振（ＥＳＲ）法和全息法研究了六价铬离子Ｃｒ（Ⅵ）在不同电子供体－二甲基亚砜（ＤＭＳＯ）和Ｎ，Ｎ＇－二甲基甲酰胺（ＤＭＦ）－作用下向三价铬离子Ｃｒ（Ⅲ）的光转换速度。两种方法得到相同的结论：ＤＭＳＯ和ＤＭＦ都不同程度地加速了Ｃｒ（Ⅵ）光致还原速度，ＤＭＳＯ的效果更加显。     

CODcr分析废液中银的回收利用

ＣＯＤｃｒ分析废液中银的回收利用ＲＥＣＯＶＥＲＹＡＮＤＲＥＣＩＲＣＵＬＡＴＩＯＮＯＦＳＩＬＶＥＲＦＲＯＭＷＡＳＴＥＷＡＴＥＲＯＦＣＯＤＣＲＡＮＡＬＹＳＩＳ佟素兰张宏滨１前言化学需氧量（ＣＯＤ）是评价水体中有机物相对含量的一项重要综合性指标,也是废水处...     

SYNTHESES OF AZETIDINES VIA PHOTOCYCLOADDITION OF C=C TO C=N DOUBLE BONDS

ＳＹＮＴＨＥＳＥＳＯＦＡＺＥＴＩＤＩＮＥＳＶＩＡＰＨＯＴＯＣＹＣＬＯＡＤＤＩＴＩＯＮＯＦＣ＝ＣＴＯＣ＝ＮＤＯＵＢＬＥＢＯＮＤＳ￥ＳＹＮＴＨＥＳＥＳＯＦＡＺＥＴＩＤＩＮＥＳＶＩＡＰＨＯＴＯＣＹＣＬＯＡＤＤＩＴＩＯＮＯＦＣ＝ＣＴＯＣ＝ＮＤＯＵＢＬＥＢＯＮ...     

EXPERIMENTAL INVESTIGATION OF KINETIC AND TRANSPORT PARAMETERS IN A WALL－COOLED FIXED－BED REACTOR

ＥＸＰＥＲＩＭＥＮＴＡＬＩＮＶＥＳＴＩＧＡＴＩＯＮＯＦＫＩＮＥＴＩＣＡＮＤＴＲＡＮＳＰＯＲＴＰＡＲＡＭＥＴＥＲＳＩＮＡＷＡＬＬ－ＣＯＯＬＥＤＦＩＸＥＤ－ＢＥＤＲＥＡＣＴＯＲＺｈｅｎ－ＭｉｎＣＨＥＮＧａｎｄＷｅｉ－ＫａｎｇＹＵＡＮ（ＵＮＩＬＡＢＲｅｓｅ...     

国内外增强用玻璃纤维的现状与发展

国内外增强用玻璃纤维的现状与发展林树益，高建枢，朱晶莹（南京玻璃纤维研究设计院２１００１２）ＳＴＡＴＵＳＡＮＤＤＥＶＥＬＯＰＭＥＮＴＯＦＲＥＩＮＦＯＲＣＥＤＧＬＡＳＳＦＩＢＥＲＡＴＨＯＭＥＡＮＤＡＢＲＯＡＤ￥ＬｉｎＳｈｕｙｉ；ＧａｏＪｉａｎｓｈｕ；Ｚ...     

高效助凝剂改性活化硅酸在净化水处理中的应用

高效助凝剂改性活化硅酸在净化水处理中的应用李玉华，谢红，赶东颖ＡＰＰＬＩＣＡＴＩＯＮＯＦＨＩＧＨＥＦＦＩＣＥＮＣＹＣＯＡＧＵＴＡＮＴＡＩＤＳＩＭＰＲＯＶＥＤＡＣＴＩＶＥＳＩＬＣＩＣＡＣＩＤＩＮＴＲＥＡＴＭＥＮＴＯＦＷＡＴＥＲ１前言活化硅酸属于无机高分...     

THEORETICAL STUDIES ON REACTION SELECTIVITY IMPROVEMENT FOR REDUCTION OF NITROBENZENE IN A PACKED－BED ELECTRODE REACTOR UNDER PERIODIC－CURRENT CONTROL

ＴＨＥＯＲＥＴＩＣＡＬＳＴＵＤＩＥＳＯＮＲＥＡＣＴＩＯＮＳＥＬＥＣＴＩＶＩＴＹＩＭＰＲＯＶＥＭＥＮＴＦＯＲＲＥＤＵＣＴＩＯＮＯＦＮＩＴＲＯＢＥＮＺＥＮＥＩＮＡＰＡＣＫＥＤ－ＢＥＤＥＬＥＣＴＲＯＤＥＲＥＡＣＴＯＲＵＮＤＥＲＰＥＲＩＯＤＩＣ－ＣＵＲＲＥＮ...     

ENHANCEMENT OF ENERGY TRANSFER FROM THE TERMINAL CHROMOPHORE OF POLYETHER TO EUROPIUM CATION（Ⅲ）VIA C

ＥＮＨＡＮＣＥＭＥＮＴＯＦＥＮＥＲＧＹＴＲＡＮＳＦＥＲＦＲＯＭＴＨＥＴＥＲＭＩＮＡＬＣＨＲＯＭＯＰＨＯＲＥＯＦＰＯＬＹＥＴＨＥＲＴＯＥＵＲＯＰＩＵＭＣＡＴＩＯＮ（Ⅲ）ＶＩＡＣＯＭＰＬＥＸＡＴＩＯＮＥＮＨＡＮＣＥＭＥＮＴＯＦＥＮＥＲＧＹＴＲＡＮＳＦＥＲ...     

非线性本构关系的确立及莫工程设计应用（续）

非线性本构关系的确立及莫工程设计应用（续）袁龙江（天津城市建设学院３００３８１）ＴＨＥＥＳＴＡＢＬＩＳＨＭＥＮＴＯＦＮＯＮＬＩＮＥＡＲＣＯＮＳＴＩＴＵＴＩＶＥＲＥＬＡＴＩＯＮＳＨＩＰＡＮＤＩＴＳＡＰＰＬＩＣＡＴＩＯＮＩＮＥＮＧＩＮＥＥＲＩＮＧＤＥＳＩ...     

CATION－ENHANCED INTRAMOLECULAR PHOTODIMERI－ZATION AND EXCIMER FORMATION OF POLYE－THERS BEARING NAPHTHALE

ＣＡＴＩＯＮ－ＥＮＨＡＮＣＥＤＩＮＴＲＡＭＯＬＥＣＵＬＡＲＰＨＯＴＯＤＩＭＥＲＩ－ＺＡＴＩＯＮＡＮＤＥＸＣＩＭＥＲＦＯＲＭＡＴＩＯＮＯＦＰＯＬＹＥ－ＴＨＥＲＳＢＥＡＲＩＮＧＮＡＰＨＴＨＡＬＥＮＥＣＨＲＯＭＯＰＨＯＲＥＳＴ＿（ＯＮＧ）Ｚ＿（ＨＥＮ－ＨＥ...     

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.     

Sapindaceae,cyanolipids, and bugs

Scentless plant bugs (Heteroptera: Rhopalidae) are so named because adults of the Serinethinae have vestigial metathoracic scent glands. Serinethines are seed predators of Sapindales, especially Sapindaceae that produce toxic cyanolipids. In two serinethine species whose ranges extend into the southern United States,Jadera haematoloma andJ. sanguinolenta, sequestration of host cyanolipids as glucosides renders these gregarious, aposematic insects unpalatable to a variety of predators. The blood glucoside profile and cyanogenesis ofJadera varies depending on the cyanolipid chemistry of hosts, and adults and larvae fed golden rain tree seeds (Koelreuteria paniculata) excrete the volatile lactone, 4-methyl-2(5H)-furanone, to which they are attracted.Jadera fed balloon vine seeds (Cardiospermum spp.) do not excrete the attractive lactone. Loss of the usual heteropteran defensive glands in serinethines may have coevolved with host specificity on toxic plants, and the orientation ofJadera to a volatile excretory product could be an adaptive response to save time.Mention of a commercial product does not consititute an endorsement by the USDA.     

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.     

2008～2009年世界塑料工业进展

收集了2008年7月～2009年6月世界塑料工业的相关资料,介绍了2008～2009年国外塑料工业的发展情况,提供了世界塑料产量、消费量及全球各类树脂的需求量及产能情况。按通用热塑性树脂(聚乙烯、聚丙烯、聚苯乙烯、聚氯乙烯、ABS树脂)、工程塑料(尼龙、聚碳酸酯、聚甲醛、热塑性聚酯、聚苯醚)、特种工程塑料(聚苯硫醚、液晶聚合物、聚醚醚酮)、通用热固性树脂(酚醛、聚氨酯、环氧树脂、不饱和聚酯树脂)不同品种的顺序,对树脂的产量、消费量、供需状况及合成工艺、产品应用开发、树脂品种的延伸及应用的进一步扩展等技术作了详细介绍。     

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。