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Preparation and Properties of(BEDT-TTF)_2Br3H_2O Salt

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Chinese Chemical Letters 1999年第2期10卷 179-182页

作者： qi chun zhang Pei Ji WU Ke Jian JIANG Rui Song DING Yan qiao WANG Dao Ben ZHU(Organic Solid Lab, Institute of Chemistry, C. A. S., Beijing 100080) Organic Solid Lab. Institute of Chemistry C. A. S. Beijing 100080 China

Electrochemical oxidation of BEDT-TTF (bis (ethylenedithio) tetrathiafulvalene) inchloroform/carbon disulfide (3:1) in the presence of Bu4NBr as a supporting electrolyte at lowcurrent density results in the (BEDT-TTF)2Br3H2O crystal. Its composition has been established bychemical analysis (Br, C, H, S), XPS and IR. The temperature dependence of the resistance has beenstudied down to 26K at ambient pressure. This material has weakly metallic behavior above 230K,and becomes a semiconductor below this temperature. The structure of the complex is alsodescribed.

关键词： Organic conductor charge transfer complex preparation electrical properties structure

N_2O emissions from agricultural soils in the North China Plain: the effect of chemical nitrogen fertilizer and organic manure

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Journal of Environmental Sciences 2000年第4期12卷 463-468页

作者： DONG Yun\|she 1,2,3 , Dieter Scharffe 2, Manfred Domroes 3, qi Yu chun 1, zhang Shen 1 (1. Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China E\|mail: dongys@*** 2. M 中科院地理科学与资源所北京 1 0 0 1 0 Max- Planck-Institute of Chemistry 德国 Mainz 550 2 0 Mainz University 德国 Mainz 550 99

An enclosed chamber technique was used to measure N 2O emissions from intensively agricultural soils of the North China Plain during the periods of 1995—1996 and 1997—1998, to reflect distinct components of winter wheat and summer maize growing seasons. The results showed that the continuous application of fertilizer in agricultural soils increased N\-2O emissions by a factor of 24.1—28.1, the calculated annual chemical N fertilizer\|transformed N\-2O\|N emissions was 0.67%. Our results indicated that the application of organic manure also had a significant influence on soil N 2O emissions, which combined with the use of chemical N increased about 20% in a year. It was calculated that there were about 0.11% N of organic manure transformed as N 2O N. Annual mean N 2O emission from our study area of fertilized soils was estimated to be 57.1 μgN 2O/(m 2·h). A weak correlation was also found between N 2O emissions and soil available nitrogen content NH + 4.

关键词： N_2O emissions the North China Plain agricultural soils chemical nitrogen organic manure

Ammonia pyrolysis oxidation excited by nanosecond pulsed discharge:Global/fluid models hybrid solution

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Journal of Energy Chemistry 2025年第1期100卷 385-396页

作者： Mingming zhang Hanyu Wu qi Chen Jiaxin Yang Bonan Liu School of Mechanical Electronic and Control Engineering Beijing Jiaotong University China University of Petroleum

The kinetic characteristics of plasma-assisted oxidative pyrolysis of ammonia are studied by using the global/fluid models hybrid solution ***,the stable products of plasma-assisted oxidative pyrolysis of ammonia are *** results show that the consumption of NH3/O2and the production of N2/H2change linearly with the increase of voltage,which indicates the decoupling of nonequilibrium molecular excitation and oxidative pyrolysis of ammonia at low ***,the detailed reaction kinetics mechanism of ammonia oxidative pyrolysis stimulated by a nanosecond pulse voltage at low pressure and room temperature is *** on the reaction path analysis,the simplified mechanism is *** detailed and simplified mechanism simulation results are compared with experimental data to verify the accuracy of the simplified ***,based on the simplified mechanism,the fluid model of ammonia oxidative pyrolysis stimulated by the nanosecond pulse plasma is established to study the pre-sheath/sheath behavior and the resultant consumption and formation of key *** results show that the generation,development,and propagation of the pre-sheath have a great influence on the formation and consumption of *** consumption of NH3by the cathode pre-sheath is greater than that by the anode pre-sheath,but the opposite is true for OH and O（1S）.However,within the sheath,almost all reactions do not ***,by changing the parameters of nanosecond pulse power supply voltage,it is found that the electron number density,electron current density,and applied peak voltages are not the direct reasons for the structural changes of the sheath and ***,the discharge interval has little effect on the sheath structure and gas mixture *** research results of this paper not only help to understand the kinetic promotion of non-equilibrium excitation in the process of oxidative pyrolysis but also help to explore th

关键词： Nanosecond pulsed discharge Ammonia Oxidative pyrolysis Fluid model Global model

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人脸超分辨率重建中投影空间的选择方法

西安交通大学学报 2018年第8期52卷 43-48页

作者：张哲齐春张钊强陈晓璇西安交通大学电子与信息工程学院西安710049 西北大学信息科学与技术学院西安710049

针对人脸超分辨率重建中如何获得细节更为丰富的超分辨率重建结果问题,通过评估投影空间的一致性,给出了一种投影空间的选择方法。该方法首先根据图像样本空间与投影空间之间的映射关系计算高低分辨率图像样本所对应投影空间的投影值,... 详细信息

针对人脸超分辨率重建中如何获得细节更为丰富的超分辨率重建结果问题,通过评估投影空间的一致性,给出了一种投影空间的选择方法。该方法首先根据图像样本空间与投影空间之间的映射关系计算高低分辨率图像样本所对应投影空间的投影值,然后随机选取若干对高低测试图像样本投影值作为重建目标,并通过邻域嵌入分别获取其对应的高低分重建权值,最后通过计算高低分重建权值间的余弦相似度,并进行直方图统计分析来评估投影空间的一致性并对投影空间进行选择。实验结果表明,该方法可以快速高效地对各投影空间进行评估与选择,其中优秀的投影空间能够将人脸超分辨率重建结果的峰值信噪比提升0.3dB左右。

关键词：人脸图像超分辨率投影空间邻域嵌入

Synthesis and Electrical Conductivity of MDA[Ni(dmit)_2]_2

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Chinese Chemical Letters 1997年第10期8卷 917-918页

作者： Shu qing SUN Xiao Yin XU qi chun zhang Pei Ji WU Dao Ben ZHU(Institule of Chemistry. Chinese Academy of Sciences. Beijing 100080)(Basic School of Medical Sciences. Capital University of Medical Sciences. Beijing 100054) Institute of Chemistry Chinese Academy of Sciences Beijing 100080 China Basic School of Medical Sciences Cap. University of Medical Sciences Beijing 100054 China

Single crystals of MDA[Ni(dmit)2]2 were synthesized by using electrooxidation *** conductivity measurements exhibit a semiconducting feature with high conductivity at roomtemperature

关键词： MDA dmit Wang Synthesis and Electrical Conductivity of MDA[Ni

Flexible molecules dedicate to release strain of inverted inorganic perovskite solar cell

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Journal of Energy Chemistry 2025年第1期100卷 87-93页

作者： Hongrui Sun Sanlong Wang Pengyang Wang Yali Liu Shanshan qi Biao Shi Ying Zhao Xiaodan zhang Institute of Photoelectronic Thin Film Devices and Technology Renewable Energy Conversion and Storage Center State Key Laboratory of Photovoltaic Materials and CellsNankai University Key Laboratory of Photoelectronic Thin Film Devices and Technology of Tianjin Haihe Laboratory of Sustainable Chemical Transformations Engineering Research Center of Thin Film Photoelectronic Technology of Ministry of Education Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)

The tensile strain in inorganic perovskite films induced by thermal annealing is one of the primary factors contributing to the inefficiency and instability of inorganic perovskite solar cells （IPSCs）,which reduces the defect formation ***,a flexible molecule 5-maleimidovaleric acid （5-MVA） was introduced as a strain buffer to release the residual strain of *** anhydride and carboxyl groups in 5-MVA interact strongly with the uncoordinated Pb2+through Lewis acid-base reaction,thus tightly“pull”the perovskite *** in-between soft carbon chain increased the structural flexibility of CsPbI2.85Br0.15perovskite materials,which effectively relieved the intrinsic internal strain of CsPbI2.85Br0.15,resisted the corrosion of external strain,and also reduced the formation of defects such as VIand *** addition,the introduction of 5-MVA improved crystal quality,passivated residual defects,and narrowed energy level ***,power conversion efficiency （PCE） of NiOxbased inverted IPSCs increased from 19.25% to 20.82% with the open-circuit voltage enhanced from 1.164 V to 1.230 *** release of strain also improved the stability of CsPbI2.85Br0.15perovskite films and devices.

关键词： Inverted inorganic perovskite solar cells Flexible molecules Strain release Crystallization Energy barrier High PCE

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植物脱毒与检测研究进展

山东农业大学学报（自然科学版） 2003年第2期34卷 307-310页

作者：孙琦张春庆山东农业大学农学院山东泰安271018

快速有效的脱毒技术 ,准确灵敏的病毒检测方法是控制植物病毒危害获得脱毒苗的有效方法。本文介绍了常用的植物脱毒技术与病毒检测方法 ,并对这些技术与方法的优缺点进行了比较。

关键词：植物脱毒技术检测方法病毒危害热处理法茎尖培养脱毒法抗病毒药剂法

Visible-light-responsive homologous heterostructure of oxynitrides constructed to boost charge separation and water splitting

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Science China Chemistry 2025年第01期 186-191页

作者： Hai Zou Yunfeng Bao Xueshang Xin Yu qi Tengfeng Xie Fuxiang zhang State Key Laboratory of Catalysis Dalian National Laboratory for Clean Energy Dalian Institute of Chemical Physics Chinese Academy of Sciences School of Chemistry and Chemical Engineering Liaoning Normal University College of Chemistry Jilin University

Constructing type II heterostructures represents a widely recognized strategy for enhancing charge separation and photocatalytic efficiency,but it remains challenging to fabricate homologous heterostructures based on visible-light-responsive semiconductors,especially for popularly investigated （oxy）nitrides with low thermal ***,we synthesized a homologous heterostructure （denoted as YTON＿H） based on the oxynitrides of YTaO4-xNyand YTa *** heterostructure exhibits type II band structure alignment and intimate interface achieved through a magnesium （Mg） powder-assisted nitridation *** with widely reported heterologous heterostructures,the as-obtained YTON＿H homologous heterostructure could similarly exhibit enhanced charge separation as well as photocatalytic water splitting performance with respect to its counterparts(YTaO4-xNyand YTaON2).Meanwhile,detailed structural characterizations and spectroscopy analysis have been made to confirm the formation of heterostructure and promotion of spatial charge separation.

关键词：

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Lipid droplets in the nervous system:involvement in cell metabolic homeostasis

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Neural Regeneration Research 2025年第3期20卷 740-750页

作者： Yuchen zhang Yiqing Chen Cheng Zhuang Jingxuan qi Robert chunhua Zhao Jiao Wang School of Life Sciences Shanghai UniversityShanghaiChina School of Medicine Shanghai UniversityShanghaiChina Institute of Basic Medical Sciences Chinese Academy of Medical Sciences School of Basic MedicinePeking Union Medical CollegeBeijingChina Center of Excellence in Tissue Engineering Chinese Academy of Medical SciencesBeijingChina Beijing Key Laboratory of New Drug Development and Clinical Trial of Stem Cell Therapy BeijingChina

Lipid droplets serve as primary storage organelles for neutral lipids in neurons,glial cells,and other cells in the nervous *** droplet formation begins with the synthesis of neutral lipids in the endoplasmic ***,lipid droplets were recognized for their role in maintaining lipid metabolism and energy homeostasis;however,recent research has shown that lipid droplets are highly adaptive organelles with diverse functions in the nervous *** addition to their role in regulating cell metabolism,lipid droplets play a protective role in various cellular stress ***,lipid droplets exhibit specific functions in neurons and glial *** of lipid droplet formation leads to cellular dysfunction,metabolic abnormalities,and nervous system *** review aims to provide an overview of the role of lipid droplets in the nervous system,covering topics such as biogenesis,cellular specificity,and ***,it will explore the association between lipid droplets and neurodegenerative *** the involvement of lipid droplets in cell metabolic homeostasis related to the nervous system is crucial to determine the underlying causes and in exploring potential therapeutic approaches for these diseases.

关键词： Alzheimer's disease lipid droplet biogenesis lipid droplets lipid metabolism nervous system neurodegenerative disorders oxidative stress Parkinson's disease