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土壤真菌07-11号菌株中的酚酸性成分

沈阳药科大学学报 2001年第5期18卷 353-355页

作者：张祎王涛裴月湖吴慧沈阳药科大学中药学院辽宁沈阳110016

以稻瘟霉 (Pyriculariaoryzae)分生孢子及菌丝形态变化为指标 ,对从云南土壤中分离得到0 7 1 1真菌的发酵产物中活性成分追踪分离 ,从其乙酸乙酯层浸膏中得到 3个酚酸性成分 ,经光谱数据分析和理化鉴别 ,分别鉴定为邻羟基苯甲酸 (Ⅰ )、... 详细信息

以稻瘟霉 (Pyriculariaoryzae)分生孢子及菌丝形态变化为指标 ,对从云南土壤中分离得到0 7 1 1真菌的发酵产物中活性成分追踪分离 ,从其乙酸乙酯层浸膏中得到 3个酚酸性成分 ,经光谱数据分析和理化鉴别 ,分别鉴定为邻羟基苯甲酸 (Ⅰ )、4 ,6 二羟基 5 甲基异苯并呋喃酮 (Ⅱ )及 2 甲酰基 3 ,5 二羟基 4 甲基苯甲酸 (Ⅲ ) 。

关键词：稻瘟霉土壤真菌活性测定酚酸性成分

Identification of anti-cancer compounds from natural products

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Chinese Journal of Natural Medicines 2020年第7期18卷 481-482页

作者： LU Jin-Jian wang yi-tao State Key Laboratory of Quality Research in Chinese Medicine Institute of Chinese Medical SciencesUniversity of MacaoMacao 999078China

Natural products serve as abundant resources with diversity of chemical structures,which has been widely explored for the pharmacological researches and drug discovery[1,2].They are generally isolated from microorgani... 详细信息

关键词： cancer abundant compounds

Interfacial Synthesis ofδ-MnO2 Nano-sheets with a Large Surface Area and Their Application in Electrochemical Capacitors

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Journal of Materials Science & Technology 2016年第2期32卷 147-152页

作者： Zhijun Jia Jun wang yi wang Bingyang Li Baoguo wang tao Qi Xin wang National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology Institute of Process EngineeringChinese Academy of SciencesBeijing 100190China School of Chemical and Biomedical Engineering Nanyang Technological University62 Nanyang Drive637459Singapore Department of Chemical Engineering Tsinghua UniversityBeijing 100084China

Birnessite-type MnO2 （δ-MnO2） nano-sheets were successfully synthesized by an interracial synthesis method in this work. The properties and electrochemical performance of the as-prepared δ-MnO2 were analyzed and evaluated by scanning electron microscopy （SEM）, X-ray diffraction （XRD）, nitrogen adsorption measurement and electrochemical tests. This facile synthesis method enables δ-MnO2 nanosheets to show a large specific surface area （257.5 m^2 g^-1）. The electrochemical test results show that the specific capacitance is 272 F g^-1 and the specific capacitance retention is over 96.7% after 1000 cycles at a scan rate of 10 mV s^-1. All results demonstrate that δ-MnO2 has a great potential application in high- performance electrochemical capacitors, and this interracial synthesis method will be a very promising method to synthesize highly active MnO2 materials in a large scale.

关键词： Oxides Nanostructures Chemical synthesis Electron microscopy Electrochemical properties

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基于极线约束的角点匹配快速算法

系统仿真学报 2008年第S1期20卷 371-374页

作者：易成涛王孝通徐晓刚海军大连舰艇学院航海系辽宁大连116018 海军大连舰艇学院装备系统与自动化系辽宁大连116018

针对同一物体从不同角度拍摄形成的不同图像的匹配问题,提出新的基于区域互信息和极线约束的角点匹配快速算法。该算法首先采用Canny边缘检测算子提取图像边缘,再利用曲率最大原理求取局部极值完成角点检测,随后基于区域互信息测度获取... 详细信息

针对同一物体从不同角度拍摄形成的不同图像的匹配问题,提出新的基于区域互信息和极线约束的角点匹配快速算法。该算法首先采用Canny边缘检测算子提取图像边缘,再利用曲率最大原理求取局部极值完成角点检测,随后基于区域互信息测度获取角点的初始匹配;进一步采用基于极线约束及马氏距离测度的改进松弛算法完成角点的精匹配。实验表明,本算法具有较好的鲁棒性,能有效、快速、高精度的进行角点匹配。

关键词：角点检测角点匹配区域互信息极线约束

Model-free Demand Response Scheduling Strategy for Virtual Power Plants Considering Risk Attitude of Consumers

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CSEE Journal of Power and Energy Systems 2023年第2期9卷 516-528页

作者： yi Kuang Xiuli wang Hongyang Zhao tao Qian Nailiang Li Jianxue wang Xifan wang School of Electrical Engineering Xi’an Jiaotong UniversityXi’an 710049China Shaanxi Key Laboratory of Smart Grid Xi’an Jiaotong UniversityXi’an 710049China

Driven by modern advanced information and communication technologies,distributed energy resources have great potential for energy supply within the framework of the virtual power plant(VPP).Meanwhile,demand response(DR)is becoming increasingly important for enhancing the VPP operation and mitigating the risks associated with the fluctuation of renewable energy resources(RESs).In this paper,we propose an incentivebased DR program for the VPP to minimize the deviation penalty from participating in the power *** Markov decision process(MDP)with unknown transition probability is constructed from the VPP’s prospective to formulate an incentivebased DR program,in which the randomness of consumer behavior and RES generation are taken into ***,a value function of prospect theory(PT)is developed to characterize consumer’s risk attitude and describe the psychological factors.A model-free deep reinforcement learning(DRL)-based approach is proposed to deal with the randomness existing in the model and adaptively determine the optimal DR pricing strategy for the VPP,without requiring any system model ***,the results of cases tested demonstrate the effectiveness of the proposed approach.

关键词： Incentive-based demand response Markov decision process virtual power plant

The role of dynamic transport in the formation of the inverted charge structure in a simulated hailstorm

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Science China Earth Sciences 2016年第7期59卷 1414-1426页

作者： XU Liang tao ZHANG yi Jun LIU Heng yi ZHENG Dong wang Fei State Key Laboratory of Severe Weather Chinese Academy of Meteorological Sciences College of Earth Sciences University of Chinese Academy of Sciences Laboratory of Lightning Physics and Protection Engineering Chinese Academy of Meteorological Sciences

The inverted charge structure formation of a hailstorm was investigated using the Advanced Weather Research and Forecasting(WRF-ARW) model coupled with electrification and discharge schemes. Different processes may be responsible for inverted charge structure in different storms and regions. A dynamical-derived mechanism of inverted charge structure formation was confirmed by the numerical model: the inverted structure was formed by strong updraft and downdraft under normal-polarity charging conditions such that the graupel charged negatively in the main charging region in the middle-upper level of the cloud. The simulation results showed the storm presented a normal charge structure before and after hail-fall; while during the hail-fall stage, it showed an inverted charge structure—negative charge region in the upper level of the cloud and a positive charge region in the middle level of the cloud—appearing at the front edge near the strong updraft in the hailstorm. The charging processes between the two particles mainly occurred at the top of the cloud, where the graupel charged negatively and ice crystals positively due to the strong updraft. When the updraft air reached the top of the storm, it would spread to the rear and front. The light ice crystals were transported backward and forward more easily. Meanwhile, the positively charged ice crystals were transported downward by the frontal subsidence, and then a positive charge region formed between the ?10 and ?25°C levels. Subsequently, a negative charge region materialized in the upper level of the cloud, and the inverted charge structure formed.

关键词： Severe storm Mesoscale model Inverted charge structure

Benzimidazole-Linked Porous Polymers:Synthesis and Gas Sorption Properties

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Chinese Journal of Chemistry 2015年第1期33卷 131-136页

作者： yi Cui Yanchao Zhao tao wang Baohang Han National Center for Nanoscience and Technology Beijing 100190China

A series of benzimidazole-linked porous polymers are obtained by the condensation reaction between the o-aminobenzol end groups of building blocks(2,3,6,7,10,11-hexaaminotriphenylene,3,3'-diaminobenzidine or 1,2,4,5-benzenetetraamine)and the aldehyde groups of building blocks[terephthalicaldehyde,4,4'-biphenyl-dicarboxaldehyde,1,3,5-tris(4-acetylphenyl)benzene or 1,3,5-tris(4-formylbiphenyl)amine]in one-pot synthesis without employing any catalyst or *** existence of the imidazole ring in the obtained polymers could be identified by Fourier transform infrared and solid-state^(13)C CP/MAS NMR *** sphere-shaped mor-phology of the obtained polymers is observed through scanning electron *** polymers possess Brunauer-Emmett-Teller specific surface area values over 600 m^(2)·g^(-1),showing hydrogen storage(up to 1.6 wt%,at 77 K and 1×10^(5)Pa)and carbon dioxide capture(up to 12.6 wt%,at 273 K and 1×10^(5)Pa)*** poly-mers would possess good performance in the applications of gas storage and separation.

关键词： benzimidazole porous polymers hydrogen storage carbon dioxide capture

Diffusion tensor imaging of the hippocampus reflects the severity of hippocampal injury induced by global cerebral ischemia/reperfusion injury

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Neural Regeneration Research 2022年第4期17卷 838-844页

作者： Wen-Zhu wang Xu Liu Zheng-yi Yang yi-Zheng wang Hai-tao Lu China Rehabilitation Science Institute School of Rehabilitation MedicineCapital Medical UniversityBeijing Bo’ai HospitalChina Rehabilitation Research CenterBeijingChina Beijing Key Laboratory of Neural Injury and Rehabilitation BeijingChina Department of Rehabilitation Medicine Beijing Friendship HospitalCapital Medical UniversityBeijingChina Brainnetome Center Institute of AutomationChinese Academy of SciencesBeijingChina

At present,predicting the severity of brain injury caused by global cerebral ischemia/reperfusion injury(GCI/RI)is a clinical *** such an injury,clinical indicators that can directly reflect neurological dysfunction are *** change in hippocampal microstructure is the key to memory formation and *** tensor imaging is a highly sensitive tool for visualizing injury to hippocampal *** hippocampal microstructure,brain-derived neurotrophic factor(BDNF),and tropomyosin-related kinase B(Trk B)levels are closely related to nerve injury and the repair process after GCI/RI,whether these indicators can reflect the severity of such hippocampal injury remains *** address this issue,we established rat models of GCI/RI using the four-vessel occlusion *** tensor imaging parameters,BDNF,and Trk B levels were correlated with modified neurological severity *** results revealed that after GCI/RI,while neurological function was not related to BDNF and Trk B levels,it was related to hippocampal fractional *** findings suggest that hippocampal fractional anisotropy can reflect the severity of hippocampal injury after global GCI/*** study was approved by the Institutional Animal Care and Use Committee of Capital Medical University,China(approval ***-2015-139)on November 9,2015.

关键词： brain-derived neurotrophic factor diffusion tensor imaging fractional anisotropy value global cerebral ischemia/reperfusion injury hippocampus Trk B

Effect of atmosphere on the synthesis of potassium titanate

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Rare Metals 2010年第3期29卷 280-285页

作者： LI Jie wang Yong wang Lina SUN Tichang QI tao ZHANG yi School of Civil and Environmental Engineering University of Science and Technology Beijing Beijing 100083 China National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 China Key Laboratory of Green Process and Engineering Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 China

Potassium titanate （K4Ti3O8） was synthesized by the reaction between ilmenite and concentrated KOH solution in the atmosphere of nitrogen,still air,and oxygen,*** obtained samples were systematically investigated by X-ray diffraction （XRD）,inductively coupled plasma optical emission spectrometer （ICP-OES）,and scanning electron microscopy （SEM）.XRD results indicate that K4Ti3O8 have been synthesized in different *** oxidizing atmosphere could enhance the conversion rate of Ti from ilmenite to K4Ti3O8,and Fe（II） is easily oxidized to trivalent iron Fe（III） during the ***,SEM images show that the different atmospheres have significant effect on K4Ti3O8 crystal morphology and particle *** shaped K4Ti3O8 crystals are obtained in nonoxidizing atmosphere.

关键词： potassium titanate synthesis atmosphere effect crystal structure