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Performance improvement of Sb2Se3 thin-film solar cells through ultraviolet ozone treatment

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Rare Metals 2022年第8期41卷 2671-2679页

作者： Jian-Min Wu yan-Ping lv Jin-Zeng Wang Liu yang Fang Wang Hao Wu Xiao-Hong Xu Key Laboratory of Magnetic Molecules and Magnetic Information Materials Ministry of EducationSchool of Chemistry and Materials ScienceShanxi Normal University

Antimony selenide（Sb2Se3） is a promising photovoltaic thin-film absorber material that has been widely studied in recent *** Sb2Se3thin-film solar cells,cadmium sulfide（CdS） is generally used for the fabrication of electron collection layers because of its high electron affinity,electronic mobility,and environmental *** study demonstrates the effects of ultraviolet ozone（UVO） treatment of chemical-bath-deposited CdS thin films on film crystallinity,surface morphology,and photoelectric *** find that UVO treatment not only enhances the crystallinity,transmittance,and conductivity of the CdS film,but it also decreases residual organic impurities on the CdS surface significantly,substantially improving the overall device *** efficiency of the superstrate CdS/Sb2Se3heterojunction solar cell reaches to 4.66%.This UVO treatment is a facile,low-cost,and fast process,which can be performed at room *** study demonstrates a good method for optimizing the performance of CdS/Sb2Se3solar cells and is expected to find wide applications in the future.

关键词： Thin-film solar cells CdS buffer layer Ultraviolet ozone treatment Sb 2 Se 3

Bispecific aptamer-initiated 3D DNA nanomotor biosensor powered by DNAzyme and entropy-driven circuit for sensitive and specificity detection of lysozyme

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Nano Research 2023年第1期16卷 1286-1295页

作者： Shuo Qi Yuhan Sun Xiaoze Dong Imran Mahmood Khan yan lv Yin Zhang Nuo Duan Shijia Wu Zhouping Wang State Key Laboratory of Food Science and Technology International Joint Laboratory on Food SafetyJiangnan UniversityWuxi 214122China School of Food Science and Technology Jiangnan UniversityWuxi 214122China Key Laboratory of Meat Processing of Sichuan Chengdu UniversityChengdu 610106China National Engineering Research Center for Functional Food Jiangnan UniversityWuxi 214122China Collaborative Inno vation Center of Food Safety and Quality Control in Jiangsu Province Jiangnan UniversityWuxi 214122China

Dynamic DNA nanodevices have gained tremendous attention due to their extraordinary inherent functionality and advantages,however,dynamic DNA nanodevices-based biosensors are still challenging due to their high reliance on proteases and limited amplification ***,exploiting bispecific aptamer as initiators for the first time,we developed a three-dimensional(3D)DNA nanomotor biosensor powered by DNAzyme and entropy-driven circuit for sensitive and specific detection of lysozyme,in which walking and rolling strategies are efficiently integrated to achieve excellent signal amplification *** from the high selectivity of bispecific aptamer,the 3D DNA nanomotor biosensor can respond to lysozyme with high specificity and operate at high speed to release *** whole process is independent of protease,avoiding the influence of adverse environment on the operation *** optimal conditions,it can achieve a limit of detection as low as 0.01 pg/mL with an excellent linear range of 0.05 pg/mL–500 ng/mL for ***,the proposed strategy revealed high accuracy in the analysis of real samples,indicating a great potential for the application of nanomotor biosensors to the detection of non-nucleic acid targets.

关键词： bispecific aptamer DNA rolling DNA walking amplification specificity

Exceptional reversed yield strength asymmetry in a rare-earth free Mg alloy containing quasicrystal precipitates

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Journal of Magnesium and Alloys 2024年第2期12卷 687-699页

作者： Qiang yang Shuhui lv Zixiang yan Zefeng Xie Xin Qiu State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022PR China School of Materials Science and Engineering Changchun University of Science and Technology130022PR China

This work reports an exceptional reversed yield strength asymmetry at room temperature for a rare-earth free magnesium alloy containing a mass of fine dispersed quasicrystal(I-phase)*** exhibiting traditional basal texture,it owns an exceptional CYS/TYS as high as~*** back-scattered diffraction(EBSD)and transmission electron microscopy(TEM)examinations indicate pyramidal and prismatic dislocations plus tensile twinning being activated after immediate yielding in compression while basal and non-basal dislocations in tension.I-phase particles transferred the concentrated stress by self-twinning to provide the driving force for tensile twin initiating in neighboring grains,thereby significantly increasing the critical resolved shear stress of tensile twinning to possibly the level of pyramidal slip,finally leading to the dominance of pyramidal slip plus tensile twinning in texture *** results in a higher contribution on yield strength by~55 MPa in compression than in tension,which reasonably agrees with the experimental yield strength difference(~38 MPa).It can be concluded that I-phase particles influence deformation modes in tension and in compression,finally result in reversed yield strength asymmetry.

关键词： Magnesium alloy Reversed yield strength asymmetry Transmission electron microscopy(TEM) Twinning Dislocations

Comprehensive treatment and a rare presentation of Cronkhite–Canada syndrome: Two case reports and review of literature

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World Journal of Gastrointestinal Surgery 2023年第11期15卷 2646-2656页

作者： yan-Qing lv Mei-Lan Wang Tong-Yu Tang Yu-Qin Li Department of Hepatobiliary and Pancreatic Medicine The First Hospital of Jilin UniversityChangchun 130021Jilin ProvinceChina Department of Gastroenterology Jilin Provincial People's HospitalChangchun 130021Jilin ProvinceChina Department of Gastroenterology The First Hospital of Jilin UniversityChangchun 130021Jilin ProvinceChina

BACKGROUND Cronkhite–Canada syndrome(CCS)is a rare sporadic polyposis syndrome that presents with gastrointestinal and ectodermal symptoms in addition to nutritional *** combined with hypothyroidism is an even rarer condition,with no standard treatment *** SUMMARY The present study described 2 patients with CCS:A 67-year-old woman with concomitant hypothyroidism and 68-year-old man treated with endoscopic mucosal resection(EMR).Both patients had multiple gastrointestinal symptoms and ectodermal changes,along with multiple gastrointestinal *** examination showed that the mucosa in both patients was hyperemic and edematous,with pathologic examination showing distorted,atrophic,and dilated *** 1 had concomitant hypothyroidism and was treated with *** to her self-reduction of hormone dose,her disease *** 2 underwent EMR,but refused further hormonal or biological ***,he was treated with an oral Chinese medical *** Pharmacotherapy can induce and maintain remission in CCS patients,with adjuvant EMR,long-term follow-up,and endoscopic surveillance being *** 1:Based on the aforementioned findings,Patient 1 was diagnosed with CCS and *** 2:Based on the aforementioned findings,Patient 2 was diagnosed with CCS.

关键词： Cronkhite–Canada syndrome Clinical features Gastrointestinal polyps Hypothyroidism Case report

Theoretical and experimental investigation of the resonance responses and chaotic dynamics of a bistable laminated composite shell in the dynamic snap-through mode

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Applied Mathematics and Mechanics(English Edition) 2024年第4期45卷 581-602页

作者： Meiqi WU Pengyu lv Hongyuan LI Jiale yan Huiling DUAN Wei ZHANG State Key Laboratory for Turbulence and Complex Systems Department of Mechanics and Engineering ScienceBIC-ESATCollege of EngineeringPeking UniversityBeijing 100871China Nanchang Innovation Institute of Peking University Nanchang 330096China Department of Mechanics Guangxi UniversityNanning 530004China

The dynamic model of a bistable laminated composite shell simply supported by four corners is further developed to investigate the resonance responses and chaotic *** existence of the 1:1 resonance relationship between two order vibration modes of the system is *** resonance response of this class of bistable structures in the dynamic snap-through mode is investigated,and the four-dimensional(4D)nonlinear modulation equations are derived based on the 1:1 internal resonance relationship by means of the multiple scales *** Hopf bifurcation and instability interval of the amplitude frequency and force amplitude curves are *** discussion focuses on investigating the effects of key parameters,e.g.,excitation amplitude,damping coefficient,and detuning parameters,on the resonance *** numerical simulations show that the foundation excitation and the degree of coupling between the vibration modes exert a substantial effect on the chaotic dynamics of the ***,the significant motions under particular excitation conditions are visualized by bifurcation diagrams,time histories,phase portraits,three-dimensional(3D)phase portraits,and Poincare ***,the vibration experiment is carried out to study the amplitude frequency responses and bifurcation characteristics for the bistable laminated composite shell,yielding results that are qualitatively consistent with the theoretical results.

关键词： bistable laminated composite shell dynamic snap-through mode Hopf bifurcation chaotic dynamics vibration experiment

Introducing hydroxyl groups to tailor the d-band center of Ir atom through side anchoring for boosted ORR and HER

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Journal of Energy Chemistry 2024年第3期90卷 144-151,I0005页

作者： Qing lv Meiping Li Xiaodong Li Xingru yan Zhufeng Hou Changshui Huang Science Center for Material Creation and Energy Conversion School of Chemistry and Chemical EngineeringInstitute of Frontier and Interdisciplinary ScienceShandong UniversityJinan 250100ShandongChina Institute of Chemistry Chinese Academy of ScienceBeijing 100191China State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002FujianChina

Tuning the coordination atoms of central metal is an effective means to improve the electrocatalytic activity of atomic ***,iridium(Ir) is proposed to be asymmetrically anchored by sp-N and pyridinic N of hydrogen-substituted graphdiyne(HsGDY),and coordinated with OH as an Ir atomic catalyst(Ir_(1)-N-HsGDY).The electron structures,especially the d-band center of Ir atom,are optimized by these specific coordination ***,the as-synthesized Ir_(1)-N-HsGDY exhibits excellent electrocatalytic performances for oxygen reduction and hydrogen evolution reactions in both acidic and alkaline *** from the unique structure of HsGDY,IrN_(2)(OH)_(3) has been developed and demonstrated to act as the active site in these electrochemical *** those indicate the fresh role of the sp-N in graphdiyne in producing a new anchor way and contributing to promote the electrocatalytic activity,showing a new strategy to design novel electrochemical catalysts.

关键词： Oxygen reduction reaction D-band center Graphdiyne Hydroxyl group Electrocatalysis

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医用耗材物流管理体系优化探索与实践

中国医院 2024年第2期28卷 I0009-I0009,1-5页

作者：陈慧袁骏毅吕妍吴丹上海市胸科医院/上海交通大学医学院附属胸科医院上海市200030 上海申康医院发展中心上海市200041

开展医院物流管理治理工作,探索新型医院物流管理模式,是实现公立医院高质量发展战略的一项重要内容。本文根据ECRS理论的取消、合并、重排和简化原则,对医用耗材物流管理业务流程进行优化和再造,并结合现代信息化技术手段对医用耗材系... 详细信息

开展医院物流管理治理工作,探索新型医院物流管理模式,是实现公立医院高质量发展战略的一项重要内容。本文根据ECRS理论的取消、合并、重排和简化原则,对医用耗材物流管理业务流程进行优化和再造,并结合现代信息化技术手段对医用耗材系统进行优化,从而建立一套科学高效的物流管理模式。该模式实现了从准入、需求、采购、供应、存储到使用的全过程溯源管理,解决了物流管理复杂度增加、工作量增大和效率降低的问题,提高了医用耗材供应服务效率,有效控制了耗材成本,实现了提质增效。

关键词：医院医用耗材物流管理 SPD管理

MALAT1 promotes platelet activity and thrombus formation through PI3k/Akt/GSK-3βsignalling pathway

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Stroke & Vascular Neurology 2023年第3期8卷 181-192,I0001-I0004页

作者： Yeying Sun Tao Wang yan lv Jiahua Li Xiaoli Jiang Jing Jiang Daolai Zhang Weihua Bian Chunxiang Zhang College of Pharmacy Binzhou Medical UniversityYantaiShandongChina College of Life Sciences Yantai UniversityYantaiShandongChina Department of Cardiology Southwest Medical UniversityLuzhouSichuanChina

Background Ischaemic stroke and other cardiovascular illnesses are characterised by abnormalities in the processes of thrombosis and haemostasis,which rely on platelet *** platelets,a wide variety of microRNAs(long non-coding RNA,lncRNAs)is *** to the absence of nuclear DNA in platelets,lncRNAs may serve as critical post-transcriptional regulators of platelet ***,research into the roles of lncRNAs in platelets is *** The purpose of this study is to learn more about the molecular mechanism by which MALAT1 affects platelet activity and thrombus ***/results The CD34+megakaryocytes used in this research as an in vitro model for human megakaryocytes and *** adhesion and spreading are enhanced in the absence and presence of agonists in CD34+megakaryocytes subjected to MALAT1 knockdown(KD).The adhesion and activity of platelet-like particles produced by MALAT1 KD cells are significantly enhanced at rest and after thrombin *** development on a collagen matrix is also greatly enhanced in the microfluidic whole-blood perfusion model:platelets lacking MALAT1 exhibit elevated accumulation,distributing area and *** addition,MALAT1-deficient mice bleed less and form a stable occlusive thrombus more quickly than wild-type *** and PDK1 regulated the activity of MALAT1 in platelets to carry out its PI3k/Akt/GSK-3βsignalling pathway-related *** The suppression of MALAT1 expression significantly increases platelet adhesion,spreading,platelet activity,and thrombus *** may constitute a unique class of platelet function modulators.

关键词： MALAT1 thrombus platelet

Bifurcation analysis of a diffusive predator-prey model with hyperbolic mortality and prey-taxis

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International Journal of Biomathematics 2024年第1期17卷 251-264页

作者： yan Li Zhiyi lv Fengrong Zhang Hui Hao College of Science China University of Petroleum(East China)Qingdao 266580P.R.China

In this paper,we study a diffusive predator-prey model with hyperbolic mortality and prey-taxis under homogeneous Neumann boundary *** first analyze the influence of prey-taxis on the local stability of constant *** turns out that prey-taxis has influence on the stability of the unique positive constant equilibrium,but has no influence on the stability of the trivial equilibrium and the semi-trivial *** then derive Hopf bifurcation and steady state bifurcation related to prey-taxis,which imply that the prey-taxis plays an important role in the dynamics.

关键词： Predator-prey model prey-taxis Hopf bifurcation steady state bifurcation