检索结果-南通市图书馆

Thick Active-Layer Organic Solar Cells

同方期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Chemistry 2023年第24期41卷 3739-3750页

作者： zesheng liu Tengfei Li Yuze Lin Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of SciencesBeijing100190 China University of Chinese Academy of Sciences Beijing100049 China

Organic solar cells(OSCs)present a promising renewable energy technology due to their cost-effectiveness,adaptability,and lightweight *** advent of non-fullerene acceptors has further boosted their significance,allowing for power conversion efficiencies surpassing 19%even with an active layer thickness of about 100 ***,in order to achieve large scale production,it is necessary to fabricate OSCs with thicker active layers exceeding 300 nm that are compatible with large-area printing ***,OSCs with thick active layers have inferior performance compared to those with thin active *** expedite the transition of OSCs from laboratory to industrial high-throughput manufacturing,considerable efforts have been made to comprehend the performance limitations of thick active-layer OSCs,develop novel photoactive materials that are high-performance and tolerant towards the thickness of the active layer,and optimize the morphology of the photoactive layer and device *** review aims to provide a comprehensive summary of the mechanisms that lead to efficiency loss in thick active-layer OSCs,the representative works on molecular design,and the optimization strategies for high-performance thick active-layer OSCs,and the remaining challenges that must be addressed.

关键词： Organic solar cells Charge transport Charge extraction and recombination Thick active layer Energy loss

Revealing the Unusual Efficiency Enhancement of Organic Solar Cells with Polymer-Donor-Treated Cathode Contacts

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

Chinese Journal of Polymer Science 2022年第8期40卷 937-943,I0009页

作者： zesheng liu Yawen Li Xiaojun Zhao Yufan Zhu Yuze Lin Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of SciencesBeijing100190China University of Chinese Academy of Sciences Beijing100049China

The metal oxides with low trap density of states as the electron transport layer are crucial for the high performance of the organic solar cells(OSCs).It is universally acknowledged that modifying n-type metal oxide contacts with polymer donors will harm the carrier extraction on account of the mismatched energy ***,we find that modifying interlayer consisting of the alcohol amines with some polymer donor additive can unusually enhance the performance of the *** with triethanolamine(TEA)passivated ZnO,TEA:polymer donor treated ZnO shows lower trap density and enhances electron mobility resulting in higher current density in OSC ***,we reveal that the enhanced oxygen-defect passivation ability of TEA with polymer additive is attributed to the enhanced negative electrostatic potential of TEA owing to the hydrogen bond formation between the polymer and the hydroxyl group in *** strategy that enhancing the negative electrostatic potential of the passivators for improving oxygen defect passivation can be extended to other types of organic electronic devices.

关键词： Organic solar cell Electron transport layer Trap density Passivation Hydrogen bond

关节粘连传统松解术联合中药熏洗对运动性膝关节损伤的治疗效果

在线全文

学校读者我要写书评

暂无评论

河北中医 2024年第3期46卷 443-446页

作者：韩佳秀刘泽生李通河北省张家口市中医院骨伤科河北张家口075000

目的观察关节粘连传统松解术联合中药熏洗对运动性膝关节损伤的治疗效果。方法将60例运动性膝关节损伤患者按照随机数字表法分为2组,对照组30例予西药治疗,治疗组30例在对照组治疗基础上予关节粘连传统松解术联合中药熏洗治疗。疗程4周... 详细信息

目的观察关节粘连传统松解术联合中药熏洗对运动性膝关节损伤的治疗效果。方法将60例运动性膝关节损伤患者按照随机数字表法分为2组,对照组30例予西药治疗,治疗组30例在对照组治疗基础上予关节粘连传统松解术联合中药熏洗治疗。疗程4周。比较2组治疗前后Lysholm膝关节评分、180°/s、60°/s等速运动的屈膝肌峰力矩、伸膝肌峰力矩、疼痛视觉模拟评分(VAS)、简明健康状况量表(SF-36)评分,并统计2组疗效。结果治疗组总有效率86.67%(26/30),对照组总有效率66.67%(20/30),治疗组临床疗效优于对照组(P<0.05)。2组治疗后Lysholm膝关节评分均较本组治疗前升高(P<0.05),且治疗组治疗后高于对照组(P<0.05)。2组治疗后等速运动伸肌峰力矩、等速运动屈肌峰力矩均较本组治疗前升高(P<0.05),且治疗组治疗后均高于对照组(P<0.05)。2组治疗后疼痛VAS均较本组治疗前降低(P<0.05),且治疗组治疗后低于对照组(P<0.05)。2组治疗后SF-36各项评分均较本组治疗前升高(P<0.05),且治疗组治疗后高于对照组(P<0.05)。结论关节粘连传统松解术联合中药熏洗对运动性膝关节损伤的治疗效果较好,值得临床推广。

关键词：运动性膝关节损伤伤筋病关节粘连传统松解术中药熏洗

独脚金内酯参与富氢水增强番茄幼苗根系的耐盐性

在线全文

学校读者我要写书评

暂无评论

甘肃农业大学学报 2024年第3期59卷 129-135,144页

作者：叶福金方华冯丽石媚媚黄盼盼刘兴娟刘泽生廖伟彪甘肃农业大学园艺学院甘肃兰州730070

【目的】研究盐胁迫下氢气(H2)和独脚金内酯(SLs)在番茄幼苗根系中的调控作用及其相互关系。【方法】以番茄(Solanum lycopersicum L.‘Micro-Tom’)为试材,采用人工培养室基质栽培方式,确定最适浓度富氢水(75%)的基础上,设置如下处理:1... 详细信息

【目的】研究盐胁迫下氢气(H2)和独脚金内酯(SLs)在番茄幼苗根系中的调控作用及其相互关系。【方法】以番茄(Solanum lycopersicum L.‘Micro-Tom’)为试材,采用人工培养室基质栽培方式,确定最适浓度富氢水(75%)的基础上,设置如下处理:100%霍格兰营养液(CK)、盐胁迫(NaCl)、NaCl+HRW、NaCl+GR24(独脚金内酯合成类似物)、NaCl+HRW+TIS108(独脚金内酯合成抑制剂)。测定根系相关指标以及SLs含量及其相关合成基因表达量。【结果】盐胁迫下,75%HRW处理能显著增加番茄根系的长度、鲜质量和干质量。同时,GR24和HRW促进了盐胁迫下番茄幼苗的根系形态参数(根长、根表面积、根体积、平均直径等)和根系活力。然而,HRW的积极作用被SLs合成抑制剂TIS108所抑制。所以H2调节的番茄幼苗根系耐盐性可能SLs与有关。此外,HRW处理增加了盐胁迫下番茄幼苗根系的内源SLs含量。在盐胁迫下,HRW处理也显著上调了SLs生物合成相关基因SlCCD7、SlCCD8、SlD14和SlMAX1的表达水平。【结论】SLs可能参与了H2诱导的番茄幼苗根系的耐盐性。

关键词：番茄盐胁迫富氢水独脚金内酯根系活力基因表达

A rapid classification method of aluminum alloy based on laser-induced breakdown spectroscopy and random forest algorithm

同方期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

Plasma Science and Technology 2019年第3期21卷 148-154页

作者： liuyang ZHAN Xiaohong MA Weiqi FANG Rui WANG zesheng liu Yang SONG Huafeng ZHAO Department of Electronic Engineering Tsinghua University

As an important non-ferrous metal structural material most used in industry and production,aluminum(Al) alloy shows its great value in the national economy and industrial *** to classify Al alloy rapidly and accurately is a significant, popular and meaningful *** methods based on laser-induced breakdown spectroscopy(LIBS) have been reported in recent years. Although LIBS is an advanced detection technology, it is necessary to combine it with some algorithm to reach the goal of rapid and accurate classification. As an important machine learning method, the random forest(RF) algorithm plays a great role in pattern recognition and material classification. This paper introduces a rapid classification method of Al alloy based on LIBS and the RF algorithm. The results show that the best accuracy that can be reached using this method to classify Al alloy samples is 98.59%, the average of which is 98.45%. It also reveals through the relationship laws that the accuracy varies with the number of trees in the RF and the size of the training sample set in the RF. According to the laws, researchers can find out the optimized parameters in the RF algorithm in order to achieve,as expected, a good result. These results prove that LIBS with the RF algorithm can exactly classify Al alloy effectively, precisely and rapidly with high accuracy, which obviously has significant practical value.

关键词： laser-induced breakdown spectroscopy(LIBS) random forest(RF) aluminum(Al)alloy classification

Enhancing Photovoltaic Performance of Asymmetric Fused-Ring Electron Acceptor by Expanding Pyrrole to Pyrrolo[3,2-b]pyrrole

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Chemistry 2022年第24期40卷 2861-2866页

作者： Zemin Wang Guilong Cai Peiyao Xue zesheng liu Boyu Jia Nan Li Jiayu Wang Xinhui Lu Yuze Lin Guojie Wang Xiaowei Zhan School of Materials Science and Engineering University of Science and Technology BeijingBeijing100083 China Key Laboratory of Polymer Chemistry and Physics of Ministry of Education School of Materials Science and EngineeringPeking UniversityBeijing100871 China Department of Physics The Chinese University of Hong KongNew Territories999077 Hong KongChina Chinese Academy of Sciences Beijing National Laboratory for Molecular SciencesCAS Key Laboratory of Organic SolidsInstitute of ChemistryBeijing100190 China

We propose a strategy to improve performance of unidirectionally extended fused-ring electron acceptors by using pyrrolo[3,2-b]pyrrole to replace pyrrole ring, and design two asymmetric nonfullerene acceptors 1PIC and 2PIC. Replacing pyrrole in 1PIC with pyrrolo[3,2-b]pyrrole remarkably red-shifts absorption peak by 109 nm, elevates the HOMO and LUMO energy levels, and improves electron mobility. The photovoltaic devices based on blend of PM6 donor and 2PIC acceptor exhibit power conversion efficiency as high as 12.6%, which is much higher than that of PM6:1PIC (3.53%), due to more efficient exciton generation and dissociation, faster and more balanced carrier transport and less charge recombination.

关键词： Energy conversion Fused-ring electron acceptor Pyrrolo[3,2-b]pyrrole Asymmetric synthesis Semiconductors

腹腔镜胆总管探查取石术后一期缝合与T管引流治疗胆总管结石的疗效比较

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

中国基层医药 2024年第7期31卷 988-993页

作者：潘光明曹权王帮成刘泽生兰青青杨海峰贵州医科大学第二附属医院肿瘤肝胆外科凯里556000

目的比较腹腔镜胆总管探查取石术后一期缝合与T管引流治疗胆总管结石的疗效。方法选择贵州医科大学第二附属医院2021年2月至2023年2月收治的胆总管结石患者52例为研究对象,均行腹腔镜胆总管探查取石术,采用随机对照(RCT)研究方法,以随... 详细信息

目的比较腹腔镜胆总管探查取石术后一期缝合与T管引流治疗胆总管结石的疗效。方法选择贵州医科大学第二附属医院2021年2月至2023年2月收治的胆总管结石患者52例为研究对象,均行腹腔镜胆总管探查取石术,采用随机对照(RCT)研究方法,以随机数字表法将患者分成两组,各26例,对照组术后行T管引流进行治疗,观察组术后行一期缝合进行治疗;两组术后均观察3 d,比较两组术后临床指标、血清皮质醇、肾上腺素、C反应蛋白(CRP)、白细胞介素6(IL-6)、血清直接胆红素(DBIL)、总胆汁酸(TBA)、碱性磷酸酶(ALP)、谷氨酰转肽酶(GGT)、术后并发症发生情况。结果观察组手术时间为(105.30±5.89)min,显著短于对照组的(121.36±5.86)min(t=9.86,P<0.001);观察组术中出血量为(40.31±4.53)mL,少于对照组的(45.20±4.76)mL(t=3.80,P<0.001);观察组住院时间为(12.01±2.86)d,短于对照组的(14.32±2.73)d(t=2.98,P=0.005);观察组胃肠功能恢复时间为(31.42±2.59)d,快于对照组的(37.62±2.63)d(t=8.57,P<0.001);观察组胆汁引流量为(168.69±15.41)mL,少于对照组的(275.62±15.32)mL(t=25.09,P<0.001)。两组应激指标(术后)比较:观察组皮质醇为(469.63±20.62)mmol/L,高于对照组的(359.65±19.87)mmol/L(t=19.58,P<0.001);观察组肾上腺素为(274.62±20.21)ng/L,高于对照组的(198.64±20.16)ng/L(t=13.57,P<0.001);观察组CRP为(3.42±0.37)mg/L,高于对照组的(2.74±0.25)mg/L(t=7.77,P<0.001);观察组IL-6(112.36±8.94)μg/L,高于对照组的(87.62±8.63)μg/L(t=10.15,P<0.001)。两组肝功能指标(术后)比较:观察组DBIL为(24.52±4.62)μmol/L,低于对照组的(35.62±4.87)μmol/L(t=8.43,P<0.001);观察组TBA为(10.62±4.21)U/L,低于对照组的(17.64±4.16)U/L(t=6.05,P<0.001)。观察组ALP为(100.21±10.24)mg/L,低于对照组的(112.74±11.25)mg/L(t=4.20,P<0.001);观察组GGT为(122.36±8.94)μg/L,低于对照组的(142.62±5.63)μg/L(t=9.78,P<0.001)。两组并发症发生率比较:观察组[7.69%(2/26)]显著低于对照组[30.77%(8/26)](χ^(2)=4.46,P=0.035)。结论与T管引流相比较,腹腔镜胆总管探查取石术后一期缝合可以减轻患者应激反应,改善肝功能,术后恢复时间短,且并发症发生率更低。

关键词：胆总管结石病胆囊切除术,腹腔镜缝合技术引流术应激障碍,创伤性肝功能试验随机对照试验手术后并发症

在线全文

学校读者我要写书评

暂无评论

基于偏振光栅的一维集成成像双视3D显示

红外与激光工程 2020年第1期49卷 246-250页

作者：范钧刘泽晟邓慧成都工业学院电子工程学院四川成都611730

为了解决视区分离的问题,设计了一种基于偏振光栅的一维集成成像双视3D显示器,建立了3D成像模型,详细阐述了一维集成成像双视3D显示的原理;通过几何光学推导视区宽度以及观看视角的计算公式;研制了基于偏振光栅的一维集成成像双视3D显... 详细信息

为了解决视区分离的问题,设计了一种基于偏振光栅的一维集成成像双视3D显示器,建立了3D成像模型,详细阐述了一维集成成像双视3D显示的原理;通过几何光学推导视区宽度以及观看视角的计算公式;研制了基于偏振光栅的一维集成成像双视3D显示测试装置,在左18°到右18°的范围内,通过左偏振眼镜和右偏振眼镜在同一视区内分别观看到两个不同的3D图像。

关键词：集成成像双视偏振光栅观看视角

港澳研究:一份刊物与一个学术专栏——写在香港回归十周年之际

在线全文

学校读者我要写书评

暂无评论

广东社会科学 2007年第4期 5-11页

作者：刘泽生 <广东社会科学>杂志社

"香港学"("澳门学")是涉及到经济学、政治学、社会学、历史学、哲学、法学、文学等领域的一门综合性的学科,受到学术界和社会各界的广泛关注。本文回顾了半个多世纪以来内地有关港澳研究的状况,通过一份学术刊物的"港澳研究"专栏,分析... 详细信息

"香港学"("澳门学")是涉及到经济学、政治学、社会学、历史学、哲学、法学、文学等领域的一门综合性的学科,受到学术界和社会各界的广泛关注。本文回顾了半个多世纪以来内地有关港澳研究的状况,通过一份学术刊物的"港澳研究"专栏,分析了港澳研究的变迁及其学术特点,并对未来的港澳研究学科建设提出若干建议与思考。

关键词：香港澳门港澳研究学科建设