检索结果-南通市图书馆

开展美沙酮维持治疗后江苏省注射吸毒艾滋病病毒感染者现况研究

在线全文

学校读者我要写书评

暂无评论

南京医科大学学报（自然科学版） 2017年第6期37卷 771-775页

作者：陈国红丁建平卢静傅更锋刘晓燕江苏省疾病预防控制中心性病艾滋病防制所江苏南京210009

目的:分析江苏省针对阿片类物质成瘾者开展美沙酮维持治疗(methadone maintenance treatment,MMT)10年后注射吸毒的人免疫缺陷病毒(human immunodeficiency virus,HIV)感染者现状。方法:从艾滋病网络直报系统中下载历年报告的HIV感染者... 详细信息

目的:分析江苏省针对阿片类物质成瘾者开展美沙酮维持治疗(methadone maintenance treatment,MMT)10年后注射吸毒的人免疫缺陷病毒(human immunodeficiency virus,HIV)感染者现状。方法:从艾滋病网络直报系统中下载历年报告的HIV感染者以及参加MMT的患者信息,分析感染者接受MMT门诊服务现状。结果:江苏省医疗机构报告的HIV感染者中有430例尚未接受过MMT服务。截至2015年12月底,累计收治9 382例阿片类物质成瘾者,其中190例为注射吸毒的HIV感染者,目前31.58%仍在治疗。与未被门诊收治的感染者相比,MMT门诊收治感染者的平均年龄较大(P<0.001),HIV感染状态持续时间较长(P<0.001),汉族患者比例较高(P<0.001),初中及以上文化程度者比例较高(P<0.001)。结论:MMT门诊的覆盖面需进一步扩大,从而吸纳注射吸毒的HIV感染者接受治疗,门诊配套的综合干预服务措施亟待加强。

关键词：注射吸毒人免疫缺陷病毒美沙酮维持治疗

Bifunctional bridging capping layer enables 24.5% efficiency of perovskite solar cells with polymer-based hole transport materials

在线全文

学校读者我要写书评

暂无评论

Science China Chemistry 2025年第1期 350-359页

作者： Can Zhu Yiyang Wang Lei Meng Beibei Qiu jing Li Shucheng Qin Ke Hu Xin Jiang Wenbin Lai Minchao liu Zhe liu Chenxing Lu Jinyuan Zhang Yongfang Li Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Organic Solids Institute of Chemistry Chinese Academy of Sciences School of Chemical Science University of Chinese Academy of Sciences Key Laboratory of Solid State Optoelectronic Devices of Zhejiang Province College of Physics and Electronic Information Engineering Zhejiang Normal University Key Laboratory of Photochemical Conversion and Optoelectronic Materials Technical Institute of Physics and ChemistryChinese Academy of Sciences Laboratory of Advanced Optoelectronic Materials College of Chemistry Chemical Engineering and Materials ScienceSoochow University

Developing a bridge capping layer between perovskite and hole transport layer materials（HTMs） in the n-i-p perovskite solar cells（pero-SCs） is an effective approach to modify the morphology of HTMs and passivate the perovskite ***, we select the quinoxaline-based bifunctional passivation agent, quinoxalin-6-yl-methylamine hydrochloride（Qx MACl）,as the bridging layer, and a D-A copolymer PBQ12 containing the same quinoxaline unit as an HTM for the n-i-p pero-SCs. Due to the π-π stacking among the common quinoxaline units in the bridge layer and HTM, Qx MACl induces the π-π stacking of the PBQ12 film and improves the film morphology of HTMs with better conductivity. Additionally, Qx MACl can effectively passivate the perovskite surface, and PBQ12 possesses appropriate energy levels and high hole mobility. The pero-SCs based on FAPbI3with PBQ12/Qx MACl treatment showed a higher power conversion efficiency（PCE） of 24.05% and outstanding stability, maintaining 95.4% and 92.1% of its initial PCE after 750 h of storage and after over 800 h of thermal annealing at 85 °C, respectively. To further enhance the PCE of the PBQ12/Qx MACl-based devices, we developed a non-metal ion dopant for the PBQ12 HTM. Through trace doping of PBQ12 HTM by the non-metal ion dopant, the PCE of the PBQ12/Qx MACl-based devices reached 25.24%（the calibrated PCE of 24.55% by the National Institute of Metrology, China）.

关键词：

同方期刊数据库

Printing perovskite and graphene parallel structure-based optical-mechanical sensors for human-machine interaction

在线全文

学校读者我要写书评

暂无评论

Science China Technological Sciences 2025年

作者： Sisi CHEN Jiemin ZHANG Nan CHENG Wenbo LI jing liu Hongfei XIE Jie ZHANG Yueying CHENG Xiaotong ZHAO Meng SU Yanlin SONG Key Laboratory of Green Printing CAS Research/Education Center for Excellence in Molecular Sciences Institute of ChemistryChinese Academy of Sciences (ICCAS) University of Chinese Academy of Sciences Weiyang College Tsinghua University Department of Cardiovascular Surgery First Medical Center PLA General Hospital AECC Beijing Institute of Aeronautical Materials Beijing Institute of Graphene Technology Beijing Engineering Research Centre of Graphene Application School of Integrated Circuit & Beijing National Research Center for Information Science and Technology (BNRist) Tsinghua University

Surgical robots are designed to provide enhanced precision and dexterity compared to manual surgical procedures,which mainly rely on multimodal sensing technologies for the surgeon to seamlessly operate the robotic arms and *** with single-mode sensors, optical and mechanical bi-modal sensors provide improved precision, enhanced safety,and robustness of human-machine interaction systems. Here, the template-guided and pneumatic printing technologies are combined to construct perovskite and graphene parallel structures with both optical and mechanical sensing capabilities. The printed uniformly crystallized perovskite microstructure exhibits fast and sensitive photoelectric response characteristics,enabling shadow recognition functionality. The combination of graphene and elastic rubber endows the great printability to prepare parallel structures near the perovskite arrays for force sensing capabilities. Thus, the printed perovskite and graphene structures possess non-contact optical sensing capabilities to detect hand position by recognizing shadows between the hand and the sensor, as well as contact mechanical sensing capabilities to detect touch force applied by the hand. It provides a synergistic platform for real-time and multidimensional feedback to improve human-machine interaction.

关键词：

Influences of Inflow Condition on Non-Axisymmetric Flows in Turbine Exhaust Hoods

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Journal of Thermal Science 2008年第4期17卷 305-313页

作者： jing-Lun fu Jian-Jun liu Institute of Engineering ThermophysicsChinese Academy of Sciences Beijing 100190 China

The complex 3D flow in a steam turbine exhaust hood model with different inlet swirl and inlet total pressure radial distributions has been simulated by employing CFX-5 and analyzed in this paper. It＇s found that the inlet tangential flow angle at hub has a negative effect on the exhaust hood performance, while a negative gradient of inlet total pressure radial distribution has a positive impact on the hood performances. It＇s also numerically con- firmed that a proper distribution of total pressure at hood inlet can successfully eliminate the negative effects caused by the inappropriate inlet swirl distribution and improve the hood aerodynamic performance.

关键词： turbine exhaust hood inflow conditions non-axisymmetric flow

Investigations on the Improving Aerodynamic Performances of Last Stage Steam Turbine and Exhaust Hood under Design and Off Design Conditions

在线全文

学校读者我要写书评

暂无评论

Journal of Thermal Science 2015年第5期24卷 468-477页

作者： fu jing-Lun liu Jian-Jun Key Laboratory of Advanced Energy and Power Institute of Engineering Thermophysics

The purpose of this paper is to improve the aerodynamic performances of the last stage turbine and the exhaust hood of a 600MW steam turbine under design and off design conditions. During operation, strong flow interactions between the turbine and the exhaust hood impose influences on the flow behavior in the hood and lead to the unsatisfactory aerodynamic performance of the turbine and exhaust hood. So the exhaust hood has the potential to be improved in terms of aerodynamic efficiency. Considering the flow interactions between the turbine and the exhaust hood, the profiles of the diffuser end-wall were optimized. The coupled model turbine and model exhaust hood calculations and experiments were carried out to validate the effects of the optimization. Model experiments show that the design modifications resulted in a substantial increase in the overall pressure recovery coefficient. The flow and aerodynamic performances of the full-scale last stage turbine and full-scale exhaust hood were simulated to explore the flow physics alterations to the modification of diffuser geometry. The wet steam was selected as the flow medium. The actual flow fields trader different operation conditions were analyzed.

关键词： steam turbine exhaust hood full scale coupling flow

The Influence of Co Addition on Phase Transformation Behavior and Mechanical Properties of TiNi Alloys

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Aeronautics 2007年第2期20卷 153-156页

作者： jing Rui-rui liu fu-shun School of Materials Science and Engineering Beijing University of Aeronautics and Astronautics Beijing 100083 China

The influences of Co-addition on phase transformation behavior and mechanical properties of TiN/alloys were investigated. Resuits indicate that, as a substitute for Ni, Co added to TiNi alloys can dramatically decrease the martensite transformation temperature, and R phase transformation and martensite transformation are accordingly separated. When Co-content reach 10 at.%, the martensite transformation temperature is lower than that of liquid nitrogen. During deformation at room temperature, Ti50Ni48Co2 alloy exhibits good ductility with a lower stress plateau caused by stress-induced martensite and martensite reorientation.

关键词： TiNiCo shape memory alloy martensite transformation mechanical property

Comparison of Catalytical and Biological Activities for Substituted Polyoxotungstates Containing Ti and CpTi

在线全文

学校读者我要写书评

暂无评论

Chemical Research in Chinese Universities 2003年第1期19卷 20-23页

作者： liu jing-fu WANG Xiao-hong 等 InstituteofPolyoxometalateChemistry FacultyofChemistryNortheastNormalUniversityChangchun130024P.R.China InstituteofPolyoxometalateChemistry FacultyofChemistryNortheastNormalUnivers

The effect of the functionallization of POMs on their properties was examined by the comparison between both titanium and its corresponding cyclopentadienyl subsituted polyoxocomplexes. The polarographic half wave potential of the complexes indicated that the effect of the functionallization of POMs increased the oxidizing ability of the polyoxoanions. The inhibitory effects of the CpTi polyoxocomplexes on tumor cells are higher than those of the corresponding titanium polyoxocomplexes, and the toxicity of the former is lower than that of the latter. The oxygenation reactions of cyclohexene, styrene, trans stilbene and maleic acid with PhIO or hydrogen peroxide(30% aqueous solution) catalyzed respectively by Ti and CpTi polyoxocomplexes were compared.

关键词： Polyoxometalate Titanium substituted polyoxotungstate 183 W NMR Antitumor activity

Facile synthesis of the dodecahydridododecaborate (B12H122-) from borane Lewis base adducts

在线全文

学校读者我要写书评

暂无评论

Science China Chemistry 2025年

作者： Yi jing Xin-Ran liu Xing-Hua Wang Hui Han Sha-Sha Liang Xi-Meng Chen Dong-Hui Wei Lai-Sheng Wang Xue-Nian Chen College of Chemistry Zhengzhou University School of Chemistry and Chemical Engineering Henan Key Laboratory of Boron Chemistry and Advanced MaterialsHenan Normal University Department of Chemistry Brown University

Polyhedral boranes are a class of well-known boron molecular clusters widely used in energy,chemistry,medicine,and materials science because of their unique physical and chemical *** efforts have been made in the past decades to find more effective synthetic methods for this important class of boron ***,existing synthetic methods suffer from low efficiency and low ***,we report a facile one-pot synthesis of[（CH3）3S]2B12H12with moderate yields at mild *** mechanisms for the multi-step chemoselective synthesis of B12H122-without other by-products are elucidated based on theoretical results and our previous *** Lewis base used in B–H bond condensation reaction,which acts as a hydrogen or to balance the newly generated polyhedral borane charges,is proposed and studied in *** current study has led to a more effective and selective synthetic method for B12H122-and has also implicated the syntheses of other new polyhedral boranes.

关键词：

Synthesis,Characterization　and　Catalytic　Activity　of　Polyoxometalates　Derived　from　α-P₂W₁₅O₅6⁽12

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Chemical Research in Chinese Universities 1998年第1期14卷 1-5页

作者： Meng, Lu liu, jing-fu NE Normal Univ Dept Chem Changchun 130024 Peoples R China

Ｓｙｎｔｈｅｓｉｓ，ＣｈａｒａｃｔｅｒｉｚａｔｉｏｎａｎｄＣａｔａｌｙｔｉｃＡｃｔｉｖｉｔｙｏｆＰｏｌｙｏｘｏｍｅｔａｌａｔｅｓＤｅｒｉｖｅｄｆｒｏｍα－Ｐ;Ｗ;Ｏ;６;ＬｉｇａｎｄＭＥＮＧＬｕ，ａｎｄＬＩＵＪｉｎｇ－ｆ... 详细信息

Ｓｙｎｔｈｅｓｉｓ，ＣｈａｒａｃｔｅｒｉｚａｔｉｏｎａｎｄＣａｔａｌｙｔｉｃＡｃｔｉｖｉｔｙｏｆＰｏｌｙｏｘｏｍｅｔａｌａｔｅｓＤｅｒｉｖｅｄｆｒｏｍα－Ｐ;Ｗ;Ｏ;６;ＬｉｇａｎｄＭＥＮＧＬｕ，ａｎｄＬＩＵＪｉｎｇ－ｆｕ(Ｄｅｐａ...

关键词： Activity Polyoxometalates Catalytic