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SYNTHESIS　AND　CHARACTERIZATION　OF　METAL　COMPLEXES　DERIVED　FROM　POTASSIUM　3－（BENZOTRIAZOLE1－CARBONYLMETHYL）－DITHIOCARBAZATE

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Chinese Chemical Letters 1995年第11期6卷 1009-1012页

作者： Xu, pf Wu, Z Lanzhou Univ Dept Chem Lanzhou 730000 Peoples R China Cent Res Inst Bldg & Construct MMI Beijing 100088 Peoples R China

The preparation and characterization of some divalent metal ion M (Ⅱ)complexes derived from potassium 3-(benzotriazole-1-carbonylmethyl)-dithiocar bazate (BCDHK) is reported. Thesolid complexes of the composition ML· nH2Oand ML2·2H2O (M=Ph(Ⅱ), UO2(Ⅱ)), have been characterized on the basis of elemental analyses,IR, UV and TGA.

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Powder Microelectrodes Applied to NO_2 Detection

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Chinese Chemical Letters 1999年第1期10卷 47-50页

作者： Yan, JW Lu, JT Liu, pf Wuhan Univ Dept Chem Wuhan 430072 Peoples R China

The reduction of nitrite at Au or carbon electrode in-H_2SO_4 was found to follow achemical-electrochemical (CE) mechanism with a very thin (4×10(-8)cm) preceding reaction *** was proposed and experimentally verified that for such kind of electrode processes the totalreaction the could be effectively enhanced by using electrodes with increased true surface *** as porous electrodes. As a combination of porous electrode and microelectrode, the powdermicroclectrode shows excellent performance for nitrite detection.

关键词： Nitrite reduction microelectrode CE mechanism

Relationship between wind-stress coefficient and wave height entropy

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Chinese Science Bulletin 1997年第7期42卷 585-588页

作者： Qi, JH Sun, F Guo, pf Physical Oceanography Laboratory Ocean University of Qingdao Qingdao 266003 China

1 Wind-stress relation THE wind-stress coefficient of sea surface, C_D, is defined

关键词： wind-stress coefficient wave height entropy Charnock coefficient.

Investigation of the Interaction between Nafion and Several Trisbipyridyl Complexes by Spectroscopic Method

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Chinese Chemical Letters 1997年第4期8卷 357-360页

作者： Zu, YB Liu, pf Cha, CS Li, X WUHAN UNIV DEPT CHEMWUHAN 430072PEOPLES R CHINA

In this paper evidences of strong interaction between several tris-bipyridyl complexes and Nafion matrix are provided by UV-VIS and FTIR spectra. The studied counterions also show electrostatic interaction with the bonded -SO3 groups as indicated by the shifting of gamma(s)so(3) to lower wave number. The most probable location of these complexes seems to be near the interface between the fluorocarbon back bone and the ionic duster region.

关键词： SO Investigation of the Interaction between Nafion and Several Trisbipyridyl Complexes by Spectroscopic Method

Synthesis of dimeric estradiol enzyme model containing imidazolyl and study on its catalytic efficiency in hydrolysis of carboxylates and phosphates

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Chinese Journal of Chemistry 1997年第5期15卷 438-442页

作者： Yan, JM Xie, RG Zhao, HM Wu, DX Xia, pf Sichuan Univ Dept Chem Chengdu 610064 Sichuan Peoples R China Sichuan Normal Coll Dept Chem Chengdu 610041 Sichuan Peoples R China

Dimeric estradiol enzyme model (2) was synthesized by etherification of 2,4-bis(N-imidazolylmethyl)-17β-estradiol (1) with 1,3-dibromopropane in the presence of anhydrous K2CO3. Hydrolysis of carboxylates and phosphates catalyzed by the model showed Michaelis-Menten kinetic behavior. Hydrophobic interaction between the model and ester accelerates the hydrolysis markedly, rate enhancement of up to 65 and 285 fold, relative to imidazole, is observed.

关键词： Dimeric estrogen enzyme model compound catalytic hydrolysis carboxylate phos- phate

Impact of smoking cannabidiol (CBD)-rich marijuana on driving ability

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Forensic Sciences Research 2021年第4期6卷 195-207页

作者： Tim J.Gelmi Wolfgang Weinmann Matthias pfäffli Department of Forensic Toxicology and chemistry institute of Forensic MedicineUniversity of BernBernswitzerland Graduate school for cellular and Biomedical sciences(GcB) University of BernBernswitzerland Department of Traffic sciences institute of Forensic MedicineUniversity of BernBernswitzerland

To investigate effects of smoking cannabidiol(CBD)-rich marijuana on driving ability and determine free CBD andΔ9-tetrahydrocannabinol(THC)concentrations in capillary blood samples,a randomised,double-blind,placebo-controlled,two-way crossover pilot study was conducted with 33 *** smoked a joint containing 500 mg of tobacco and either 500 mg of CBD-rich marijuana(16.6%total CBD;0.9%total THC)or 500 mg of a placebo substance,then performed three different dimensions of the Vienna Test System TRAFFIC examining reaction time,behaviour under stress,and concentration *** further assessment of participants’fitness to drive,three tests of balance and coordination were evaluated and vital signs(blood pressure and pulse)were *** blood spot samples of capillary blood were taken after smoking and after completion of the tests to determine the cannabinoid concentrations(CBD,THC and THC-metabolites).The results revealed no significant differences between the effects of smoking CBD-rich marijuana and placebo on reaction time,motor time,behaviour under stress,or concentration *** free CBD and THC concentrations in capillary blood were detected shortly after smoking,ranging between 2.6-440.0 ng/mL and 6.7-102.0 ng/mL,*** 45 min,capillary blood concentrations had already declined and were in the range of 1.9-135.0 ng/mL(free CBD)and 0.9-38.0 ng/mL(free THC).Although the observed levels of free THC concentrations have been reported to cause symptoms of impairment in previous studies in which THC-rich marijuana was smoked,no signs of impairment were found in the current *** finding suggests that higher CBD concentrations cause a negative allosteric effect in the endocannabinoid system,preventing the formation of such ***,it is recommended that consumers refrain from driving for several hours after smoking CBD-rich marijuana,as legal THC concentration limits may be exceeded.

关键词： Forensic sciences forensic toxicology cannabidiol driving while impaired road safety driving assessment

“Hot Nano Spots” as an Interpretation of So-Called Non-Thermal Biological Mobile Phone Effects

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Journal of Electromagnetic Analysis and Applications 2016年第3期8卷 62-69页

作者： Helmut pfützner Institute for Electrodynamics Microwave & Circuit Engineering Technische Universit&#228 t Wien Vienna Austria

Indications exist that mobile phones may cause non-specific biological effects. They are classified as being of implausible non-thermal nature due to low quantum energy and low specific absorption rate levels, even if considering worst cases of "hot spots" of only millimeter size. The considerations of this paper demonstrate that classical theory of polarization offers a conventional interpretation for all three the existence of so far unclarified effects, their low reproducibility and their low intensity. The basis of this explanation is given by the assumption that hot spots contain even hotter “nano spots” on a molecular level according to well known mechanisms of γ-relaxation. In this paper, the concept is put for discussion assuming a heterogeneous system that consists of water molecules as well as larger-sized functional molecules. A consistent interpretation through temperature increase on the level of nanometer sized molecular compounds promises to favor interdisciplinary discussions with respect to safety regulations.

关键词： Mobile Phone Effects Hot Spots Microwave Heating Dielectric Relaxation Non-Thermal Microwave Effects

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专家系统与专家,图书馆.情报行业

国外情报科学 1990年第3期8卷 20-27页

作者：安德.,pf 陈艳

36国（美,加除外）图书馆情报教育质量的调查报告

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国外情报科学 1990年第3期8卷 15-19页

作者：贝尔,pf 张hui