检索结果-南通市图书馆

World Journal of Clinical Cases 2020年第21期8卷 5334-5340页

作者： jina yun Sang W Lee Sung H Lim Se H Kim Chan K Kim Seong K Park Department of Internal Medicine Division of Hematology-OncologySoonchunhyang University Bucheon HospitalSoonchunhyang University School of MedicineBucheon 14584South Korea Department of Urology and Internal Medicine Soonchunhyang University Bucheon HospitalSoonchunhyang University School of MedicineBucheon 14584South Korea

BACKGROUND Choriocarcinoma is an infrequent entity and the most aggressive subtype of germcell *** of early metastatic spread and rapid disease progression,choriocarcinoma patients display poor *** etoposide,methotrexate,actinomycin D,cyclophosphamide,and vincristine(EMA-CO)regimen is widely used to treat gestational trophoblastic tumors in females,its role in treating male choriocarcinoma is seldom *** SUMMARY A 32-year-old man was diagnosed with burned-out primary germ cell tumors(GCT)with retroperitoneum,liver and lung *** of the liver revealed pure *** patient received bleomycin,etoposide,and cisplatin *** two cycles of treatment,response evaluation revealed the mixed ***-CO regimen was used in the second-line *** eight cycles,the patient showed a potentially resectable state and thus,all residual masses were surgically *** patient was completely cured,and 10 years later,he is leading a healthy life without *** This paper is the first case of high-risk nonseminomatous GCT in a male patient to be successfully treated with the EMA-CO *** EMA-CO regimen can be used actively in patients with high-risk nonseminomatous GCT.

关键词： Antineoplastic combined chemotherapy protocols Choriocarcinoma Testicular neoplasms Cyclophosphamide Methotrexate Case report

Surface-functionalized hole-selective monolayer for high efficiency single-junction wide-bandgap and monolithic tandem perovskite solar cells

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2024年第1期88卷 317-326,I0008页

作者： Devthade Vidyasagar Yeonghun yun Jae Yu Cho Hyemin Lee Kyung Won Kim Yong Tae Kim Sung Woong Yang jina Jung Won Chang Choi Seonu Kim Rajendra Kumar Gunasekaran Seok Beom Kang Kwang Heo Dong Hoe Kim Jaeyeong Heo Sangwook Lee School of Materials Science and Engineering Kyungpook National UniversityDaegu 41566Republic of Korea Department of Materials Science and Engineering and Optoelectronics Convergence Research CenterChonnam National UniversityGwangju 61186Republic of Korea Department of Materials Science and Engineering Korea UniversitySeoul 02841Republic of Korea Department of Nanotechnology and Advanced Materials Engineering Sejong UniversitySeoul 05006Republic of Korea

Carbazole moiety-based 2PACz([2-(9H-carbazol-9-yl)ethyl]phosphonic acid)self-assembled monolayers(SAMs)are excellent hole-selective contact(HSC)materials with abilities to excel the charge-transferdynamics of perovskite solar cells(PSCs).Herein,we report a facile but powerful method to functionalize the surface of 2PACz-SAM,by which reproducible,highly stable,high-efficiency wide-bandgap PSCs can be *** 2PACz surface treatment with various donor number solvents improves assembly of 2PACz-SAM and leave residual surface-bound solvent molecules on 2PACz-SAM,which increases perovskite grain size,retards halide segregation,and accelerates hole *** surface functionalization achieves a high power conversion efficiency(PCE)of 17.62%for a single-junction wide-bandgap(~1.77 e V)*** also demonstrate a monolithic all-perovskite tandem solar cell using surfaceengineered HSC,showing high PCE of 24.66%with large open-circuit voltage of 2.008 V and high fillfactor of 81.45%.Our results suggest this simple approach can further improve the tandem device,when coupled with a high-performance narrow-bandgap sub-cell.

关键词： Perovskite solar cells 2PACz Monolithic tandem solar cells Wide bandgap

High-performance self-powered color filter-free blue photodetector based on wide-bandgap halide perovskites

在线全文

学校读者我要写书评

暂无评论

Journal of Materials Science & Technology 2023年第21期152卷 100-108页

作者： Yeonghun yun Hanbyeol Cho jina Jung Sung Woong Yang Devthade Vidyasagar Rajendra Kumar Gunasekaran Sangwook Lee School of Materials Science and Engineering Kyungpook National University(KNU)Daegu 41566South Korea KNU Advanced Material Research Institute Kyungpook National UniversityDaegu 41566South Korea Institute of Microstructure Technology&Light Technology Institute Karlsruhe Institute of TechnologyKarlsruhe 76131Federal Republic of Germany

Blue photodetectors(PDs)are attracting great attention for various *** blue PDs based on inorganic GaP or InGaN absorbers are limited by their expensive,complex,and high-temperature fabrication *** absorber-based blue PDs still have much lower photode-tecting properties than inorganic blue *** this study,a high-performance self-powered blue PD is developed using methylammonium lead halide(MAPbX_(3);X=I,Br,and Cl)perovskites based on the eco-nomic and facile solution process at low *** composition is obtained through halide-composition *** best-performing device exhibits an average external quantum efficiency and an average detectivity of 42.7%and 8.65×10^(11) Jones,respectively,within the blue *** peak responsivity of the proposed PD is 0.174 A W^(−1) at 455 nm,which is comparable to that of commercial gallium phosphide blue PD(0.180 A W^(−1) at 470 nm).Moreover,the proposed device exhibits excellent environmental stability under ambient air *** findings will act as a basis for next-generation image sensor technologies,such as vertically stacked red/green/blue PDs.

关键词： Perovskites Photodetectors Blue Composition engineering Self-powered Wide bandgap

High-throughput compositional mapping of triple-cation tin-lead perovskites for high-efficiency solar cells

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

InfoMat 2023年第4期5卷 25-38页

作者： Rajendra Kumar Gunasekaran jina Jung Sung Woong Yang Jungchul yun Yeonghun yun Devthade Vidyasagar Won Chang Choi Chang-Lyoul Lee Jun Hong Noh Dong Hoe Kim Sangwook Lee School of Materials Science and Engineering Kyungpook National UniversityDaeguRepublic of Korea Advanced Photonics Research Institute(APRI) Gwangju Institute of Science and Technology(GIST)GwangjuRepublic of Korea School of Civil Environmental and Architectural EngineeringGreen SchoolKorea UniversitySeoulRepublic of Korea Department of Materials Science and Engineering Korea UniversitySeoulRepublic of Korea

Mixed tin-ead perovskites suffer from structural instability and rapid tin oxidation;thus,the investigation of their optimal composition ranges is important to address these inherent *** critical role of triple cations in mixed Sn–Pb iodides is studied by performing a wide range of compositional screenings over mechanochemically synthesized bulk and solution-processed thin films.A ternary phase map of FA(Sn_(0.6)Pb_(0.4))I_(3),MA(Sn_(0.6)Pb_(0.4))I_(3),and Cs(Sn_(0.6)Pb_(0.4))I_(3)is formed,and a promising composition window of(FA_(0.6-x)MA_(0.4)Cs_(x))Sn_(0.6)Pb_(0.4)I_(3)(0≤x≤0.1)is demonstrated through phase,photoluminescence,and stability *** cell performance and chemical stability across the targeted compositional space are investigated,and FA_(0.55)MA_(0.4)Cs_(0.05)Sn_(0.6)Pb_(0.4)I_(3)with strain-relaxed lattices,reduced defect densities,and improved oxidation stability is *** inverted perovskite solar cells with the optimal composition demonstrate a power conversion efficiency of over 22%with an open-circuit voltage of 0.867 V,which corresponds to voltage loss of 0.363 V,promising for the development of narrow-bandgap perovskite solar cells.

关键词： compositional engineering mixed tin-ead iodides narrow-bandgap perovskites perovskite solar cells strain relaxation ternary phase mapping

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

航天材料飞行试验进展及发展方向

材料导报 2022年第22期36卷 51-58页

作者：沈自才高鸿樊艳艳闫继娜于云刘学超王胭脂代巍北京卫星环境工程研究所北京100094 中国空间技术研究院北京100094 中国科学院上海硅酸盐研究所上海201899 中国科学院上海光学精密机械研究所上海201800 中国科学院空间应用工程与技术中心北京100094

航天材料飞行试验与地面模拟试验和数值模拟试验互为补充,且飞行试验是获得航天材料在轨性能数据的最直接的方法。本文首先从被动暴露和主动暴露两个维度对航天材料飞行试验技术进行了介绍,并对国内外的航天材料飞行试验现状进行了梳理... 详细信息

航天材料飞行试验与地面模拟试验和数值模拟试验互为补充,且飞行试验是获得航天材料在轨性能数据的最直接的方法。本文首先从被动暴露和主动暴露两个维度对航天材料飞行试验技术进行了介绍,并对国内外的航天材料飞行试验现状进行了梳理和分析,进而对航天材料飞行试验的发展方向如飞行试验材料的多样化和批量化、飞行试验和空间环境的监测同步开展、航天材料的宏观性能和微观性能的同时监测等进行了探讨,最后从系统规划、兼顾被动暴露和主动暴露、兼顾空间环境和效应监测、飞行试验装置的多功能和集成化等角度给出了开展航天材料飞行试验的建议。

关键词：航天材料飞行试验空间环境效应

络脉舒通对兔心肌梗死再灌流损伤保护作用的实验研究

在线全文

学校读者我要写书评

暂无评论

中华急诊医学杂志 2007年第11期16卷 1160-1162页

作者：孙祎陈玉国张运徐峰李瑞建吕瑞娟薛丽张鹤山东大学齐鲁医院急诊科济南250012 山东大学齐鲁医院心内科

目的探讨络脉舒通对兔急性心肌梗死(AMI)再灌流损伤心脏功能和氧自由基的影响。方法新西兰大白兔24只,随机分为络脉舒通组、对照组和假手术组,每组8只,制备AMI再灌流模型。观察各组血流动力学改变,检测丙二醛(MDA)、超氧化物岐化酶(SOD... 详细信息

目的探讨络脉舒通对兔急性心肌梗死(AMI)再灌流损伤心脏功能和氧自由基的影响。方法新西兰大白兔24只,随机分为络脉舒通组、对照组和假手术组,每组8只,制备AMI再灌流模型。观察各组血流动力学改变,检测丙二醛(MDA)、超氧化物岐化酶(SOD)和一氧化氮合酶(NOS)的变化,测量心肌梗死面积。结果(1)与对照组相比,络脉舒通组缺血-再灌流后2h左室收缩压(LVSP)和左心室内压最大收缩和舒张变化速率(±dp/dt_(max))均显著升高(P<0.05),LVEDP则显著下降(P<0.05)。(2)对照组MDA含量比假手术组显著增高(P<0.05),而SOD和NOS活性均显著降低(P<0.05);与对照组相比,络脉舒通组心肌梗死面积显著缩小(P<0.05),心肌MDA含量显著降低(P<0.05),心肌SOD和NOS活性均显著增高(P<0.05)。结论络脉舒通具有清除氧自由基作用,可以减轻心肌再灌流损伤,改善心功能。

关键词：络脉舒通心肌梗死缺血-再灌流兔

砖混建筑垃圾再生骨料应用技术指标系统化研究

在线全文

学校读者我要写书评

暂无评论

硅酸盐通报 2020年第9期39卷 2905-2911页

作者：徐开东王继娜李志新李青霄包云杨欢丁凌凌王园园姚兰河南城建学院材料与化工学院平顶山467036 河南省城市固废综合处置与生态利用协同创新中心平顶山467036

受制于建筑物拆除方式,缺乏专业分拣装备、人工分拣成本高等综合因素影响,当前建筑垃圾处置模式主要以混合破碎再生为主,导致再生骨料性能波动较大,再生产品质量难以控制。为解决砖混建筑垃圾混合再生骨料推广应用面临的难题,本文在经... 详细信息

受制于建筑物拆除方式,缺乏专业分拣装备、人工分拣成本高等综合因素影响,当前建筑垃圾处置模式主要以混合破碎再生为主,导致再生骨料性能波动较大,再生产品质量难以控制。为解决砖混建筑垃圾混合再生骨料推广应用面临的难题,本文在经济适用原则下,以市场主流工业生产线生产的混合再生骨料为研究对象,系统研究了不同级配不同比例下的砖混再生骨料的堆积密度、表观密度、吸水率和压碎值等基本性能指标。结果表明,随着砖再生骨料占比的增加,混合再生骨料的基本性能呈现出逐渐恶化的总体趋势。与国标中相应技术指标综合对比分析,尽管混合再生骨料达不到Ⅰ类再生粗骨料的要求,但随着砖再生骨料占比的变化仍能满足Ⅱ类、Ⅲ类再生粗骨料的要求。该研究实现了类似于pH试纸测试酸碱度般便捷高效评价混合再生骨料质量的预期目标,为建筑垃圾再生骨料低成本规模化应用奠定了较好的技术基础。

关键词：建筑垃圾砖砼混合再生骨料性能研究质量评价

矿物掺合料对赤泥陶粒轻骨料混凝土性能的影响

在线全文

学校读者我要写书评

暂无评论

新型建筑材料 2020年第10期47卷 40-43页

作者：徐开东王继娜李志新李青霄包云杨欢丁凌凌张瑞鑫河南城建学院材料与化工学院河南平顶山467036

研究了粉煤灰、矿粉和硅灰等矿物掺合料的掺入对轻骨料混凝土坍落扩展度、45 min坍落度经时损失、分层度和抗压强度等性能的影响。结果表明:粉煤灰取代率为15%时,混凝土的分层度较未掺粉煤灰的减小了29.0%,坍落扩展度增大了7.6%,45 min... 详细信息

研究了粉煤灰、矿粉和硅灰等矿物掺合料的掺入对轻骨料混凝土坍落扩展度、45 min坍落度经时损失、分层度和抗压强度等性能的影响。结果表明:粉煤灰取代率为15%时,混凝土的分层度较未掺粉煤灰的减小了29.0%,坍落扩展度增大了7.6%,45 min坍落度经时损失减小了25.0%,28 d抗压强度提高了5.3%;硅灰取代率为10%时,混凝土的分层度较未掺硅灰的减小了40.7%,坍落扩展度减小了10.1%,45 min坍落度经时损失增大了37.5%,28 d抗压强度提高了15.2%;而矿粉导致轻骨料混凝土的均质性进一步恶化。总体来看,适宜掺量的粉煤灰和硅灰对轻骨料混凝土均质性的改善效果较好,且粉煤灰能够提高轻骨料混凝土的流动性,硅灰对提高轻骨料混凝土的强度效果显著。

关键词：赤泥陶粒轻骨料混凝土坍落扩展度分层度抗压强度均质性

在线全文

学校读者我要写书评

暂无评论

预热工艺对赤泥陶粒烧成特性及性能的影响

轻金属 2021年第5期 21-25页

作者：王继娜徐开东李志新李青霄包云杨欢丁凌凌袁旭波李星晨河南城建学院材料与化工学院河南平顶山467036 河南省城市固废综合处置与生态利用协同创新中心河南平顶山467036

采用烘干炉-预热炉-烧成炉“三炉联用”模拟烧结机生产陶粒的方式,研究了适宜于赤泥陶粒生产的预热温度和预热时间,重点研究不同预热温度和保温时间对赤泥陶粒宏、微观形貌结构及强度、吸水率、堆积密度等基本物理、力学性能的影响。研... 详细信息

采用烘干炉-预热炉-烧成炉“三炉联用”模拟烧结机生产陶粒的方式,研究了适宜于赤泥陶粒生产的预热温度和预热时间,重点研究不同预热温度和保温时间对赤泥陶粒宏、微观形貌结构及强度、吸水率、堆积密度等基本物理、力学性能的影响。研究结果表明,优化的预热温度为550℃、预热时间15 min,且在焙烧温度1115℃、焙烧时间15 min的条件下制备的赤泥陶粒,其整体陶质化特征显著,表面粗糙,表层呈典型玻化特征,内部孔隙均布;赤泥陶粒的单粒强度达1.63 MPa、孔隙率41.9%、吸水率15.7%、堆积密度731 kg/m^(3)。

关键词：预热工艺赤泥陶粒烧成特性性能

额济纳盆地植物地下微生境深度范围的确定——土壤酶指示法

在线全文

学校读者我要写书评

暂无评论

干旱区研究 2006年第4期23卷 583-587页

作者：王萍罗晓云中国地质大学环境学院湖北武汉430074 重庆交通科研设计院四川重庆400067

地下微生境位置的确定对于干旱区植被生态系统的恢复具有重要意义,但目前尚没有准确、简单可行的确定方法。应用额济纳盆地的野外调查与室内实验数据,分析了3类植物群落结构(草本+灌木组合、灌木+乔木组合及草本+灌木+乔木组合)中的土... 详细信息

地下微生境位置的确定对于干旱区植被生态系统的恢复具有重要意义,但目前尚没有准确、简单可行的确定方法。应用额济纳盆地的野外调查与室内实验数据,分析了3类植物群落结构(草本+灌木组合、灌木+乔木组合及草本+灌木+乔木组合)中的土壤过氧化氢酶活性曲线。结果发现:过氧化氢酶活性曲线的各峰值区与植物群落中各生活型植物的根群位置对应,而已有研究指出植物的根群位置正与植物的地下微生境位置对应。因此,可以通过分析过氧化氢酶活性曲线来确定植物地下微生境的空间位置。

关键词：过氧化氢酶活性地下微生境植物群落土壤酶额济纳盆地