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Stable GeSe thin-film solar cells employing non-toxic SnO_(2)as buffer layer

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Rare Metals 2022年第9期41卷 2992-2997页

作者： Jian-Min Wu yan-ping lv Hao Wu Hui-Sheng Zhang Fang Wang Jun Zhang Jin-Zeng Wang Xiao-Hong Xu Key Laboratory of Magnetic Molecules and Magnetic Information Materials of Ministry of Education School of Chemistry and Materials ScienceShanxi Normal UniversityTaiyuan030000China

Germanium monoselenide(GeSe)has attracted significant attention recently for its excellent optoelectronic properties,nontoxicity,and high ***,the current best-performance GeSe solar cells usually take toxic CdS as the buffer layer that restricts their practical *** we select non-toxic SnO_(2)as the buffer layer and construct environment-friendly SnO_(2)/GeSe heterojunction solar cells.

关键词： stability. heterojunction optoelectronic

Human-induced pluripotent stem cell-derived neural stem cell exosomes improve blood-brain barrier function after intracerebral hemorrhage by activating astrocytes via PI3K/AKT/MCP-1 axis

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Neural Regeneration Research 2025年第2期20卷 518-532页

作者： Conglin Wang Fangyuan Cheng Zhaoli Han Bo yan Pan Liao Zhenyu Yin Xintong Ge Dai Li Rongrong Zhong Qiang Liu Fanglian Chen ping Lei Department of Geriatrics Tianjin Medical University General HospitalTianjinChina School of Medicine Nankai UniversityTianjinChina Tianjin Neurological Institute TianjinChina

Cerebral edema caused by blood-brain barrier injury after intracerebral hemorrhage is an important factor leading to poor ***-induced pluripotent stem cell-derived neural stem cell exosomes(hiPSC-NSC-Exos)have shown potential for brain injury repair in central nervous system *** this study,we explored the impact of hiPSC-NSC-Exos on blood-brain barrier preservation and the underlying *** results indicated that intranasal delivery of hiPSC-NSC-Exos mitigated neurological deficits,enhanced blood-brain barrier integrity,and reduced leukocyte infiltration in a mouse model of intracerebral ***,hiPSC-NSC-Exos decreased immune cell infiltration,activated astrocytes,and decreased the secretion of inflammatory cytokines like monocyte chemoattractant protein-1,macrophage inflammatory protein-1α,and tumor necrosis factor-αpost-intracerebral hemorrhage,thereby improving the inflammatory *** sequencing indicated that hiPSC-NSC-Exo activated the PI3K/AKT signaling pathway in astrocytes and decreased monocyte chemoattractant protein-1 secretion,thereby improving blood-brain barrier *** with the PI3K/AKT inhibitor LY294002 or the monocyte chemoattractant protein-1 neutralizing agent C1142 abolished these *** summary,our findings suggest that hiPSC-NSC-Exos maintains blood-brain barrier integrity,in part by downregulating monocyte chemoattractant protein-1 secretion through activation of the PI3K/AKT signaling pathway in astrocytes.

关键词： AKT astrocyte blood-brain barrier cerebral edema exosomes human-induced pluripotent stem cells intracerebral hemorrhage neural stem cells neuroinflammation PI3K

A Study on the Glycan Specificity of Natural Antibody Repertoires in Rodents

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Cellular & Molecular Immunology 2009年第6期6卷 453-459页

作者： Hui Dai yan Zhang ping lv Xiao-Ming Gao Department of Immunology Peking University Health Science CenterPeking UniversityBeijingChina Key Laboratory for Immunology Ministry for Public HealthBeijingChina Department of Immunology Peking University Health Science Center38 Xueyuan RoadBeijing 100083China

Inbred strains of mice and rats are widely used in preclinical investigations evaluating the effectiveness of glycan-based biomecines,however,the glycan specificity repertoires of serum Abs in rodents have not been fully *** the present study,serum antibodies in naïve mice and rats of different inbred strains were analyzed for specificity against 4 representative carbohydrate structures including PGA(1,4-linkeda-D-galactopyranosyluronic acids),b-glucan,mannan anda-glucan(dextran).Mannan was not recognized by serum Abs from any of the mouse and rat *** IgM in naïve F344,BN and Lewis rats recognized PGA andb-glucan and,less strongly,*** titer circulating IgM against PGA were found in mice of BALB/c,C57BL/6,C3H/NeH and BXSB strains.C3H/NeH was the only strain which also produced low titer IgM against β-glucan and ***-related production of high titer IgM,IgA and IgG Abs against β-glucan was observed in BXSB *** immunization of BALB/c and C57BL/6 mice with β-glucan elicited strong IgM responses,while immunization with PGA also led to an increase of anti-PGA IgM Ab *** results provide useful information on the characteristics of glycan-specific natural antibody repertoires in rodents.

关键词： mouse autoantibody glucan autoimmune disease

A new algorithm for reconstructing the three-dimensional flow field of the oceanic mesoscale eddy

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Chinese Physics B 2021年第12期30卷 175-181页

作者： Chao yan Jing Feng ping-lv yang Si-Xun Huang Institute of Meteorology and Oceanography National University of Defense TechnologyChangsha 410073China State Key Laboratory of Satellite Ocean Environment Dynamics Second Institute of OceanographyState Oceanic AdministrationHangzhou 310012China Basic Department Nanjing Tech UniversityPujiang InstituteNanjing 211112China

A new algorithm for reconstructing the three-dimensional flow field of the oceanic mesoscale eddies is proposed in this paper,based on variational ***,with the numerical differentiation Tikhonov regularizer,we reconstruct the continuous horizontal flow field on discrete grid points at each layer in the oceanic region,in terms of the horizontal flow field ***,benefitting from the variational optimization analysis and its improvement,we reconstruct a three-dimensional flow field under the constraint of the horizontal flow and the vertical *** results of simulation experiments validate that the relative error of the new algorithm is lower than that of the finite difference method in the case of high grid resolution,which still holds in the case of unknown observational errors or in the absence of vertical velocity boundary ***,using the reanalysis horizontal data sourcing from SODA and the proposed algorithm,we reconstruct three-dimensional flow field structure for the real oceanic mesoscale eddy.

关键词： mesoscale eddy numerical differentiation Tikhonov regularization variational optimization analysis

Unquenched Effects and Quark Mass Dependence of Lattice Gluon Propagator in Infrared Region

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Communications in Theoretical Physics 2008年第7期50卷 125-128页

作者： ZHANG yan-Bin ping Jia-Lun lv Xiao-Fu ZONG Hong-Shi Department of Physics Nanjing University Nanjing 210093 China Joint Center for Particle Nuclear Physics and Cosmology Nanjing 210093 China Department of Physics Nanjing Normal University Nanjing 210097 China Department of Physics Sichuan University Chengdu 610064 China

In this paper, the gluon propagator in Landau gauge has been studied on a lattice, including the quenched and the unquenched one. The small geometry size of lattice we use is 16^3 × 32, and the big one is 20^3 × 64. For the quenched approximation, we fit the numerical results and give a little different fitting values. We also obtain unquenched effects by comparing the gluon propagator resulting from the quenched and unquenched configurations, for both the two-flavor and three-flavor cases. For the unquenched configurations, an obvious quark mass dependence has not been found in the small quark mass case, but is found in the three-flavor case when the quark mass is big.

关键词： lattice gluon propagator quenching effect mass dependence infrared region

Second-Harmonic Generation of a Plane Wave Normally Incident upon a Solid Plate Immersed in Liquid

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Chinese Physics Letters 2013年第12期30卷 58-61页

作者： DENG Ming-Xi XIANG yan-Xun WANG ping lv Xia-Fu Department of Physics Logistics Engineering UniversityChongqing 401331 School of Mechanical and Power Engineering East China University of Science and TechnologyShanghai 200237 Department of Automation Chongqing University of Posts and TelecommunicationsChongqing 400065

We theoretically investigate the second-harmonic generation of a plane longitudinal wave normally incident upon a solid plate immersed in *** formulation of the reflected second harmonic is derived within the second-order *** analysis and numerical simulation indicate that the reflected second-harmonic amplitude increases sensitively with the increase in the nonlinear acoustic parameter of the plate material at some specific frequencies where the linear reflection coefficient of the normally incident longitudinal wave takes on the minimum value,and that it is independent of the spatial separation between the transmitter/receiver and the solid *** results obtained provide a means through which the early state of fatigue-induced damage of the solid plate(characterized by its nonlinear acoustic parameter)can be sensitively assessed by measuring the reflected second harmonic at the specific frequency where the linear reflection coefficient is minimum.

关键词： harmonic plate reflected

Application of neutrophil-lymphocyte ratio and red blood cell distribution width in diabetes mellitus complicated with heart failure

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World Journal of Diabetes 2024年第6期15卷 1226-1233页

作者： Jie Pang Lin-yan Qian ping lv Xiao-Ru Che Heart Center Department of Cardiovascular MedicineZhejiang Provincial People’s Hospital(The Affiliated People’s Hospital)Hangzhou Medical CollegeHangzhou 310014Zhejiang ProvinceChina

BACKGROUND Accumulating clinical evidence has shown that diabetes mellitus(DM)is a serious risk factor for cardiovascular disorders and an important factor for adverse cardiovascular *** To explore the value of the combined determination of the neutrophil-lymphocyte ratio(NLR)and red blood cell distribution width(RDW)in the early diagnosis and prognosis evaluation of DM complicated with heart failure(HF).METHODS We retrospectively analyzed clinical data on 65 patients with type 2 DM(T2DM)complicated with HF(research group,Res)and 60 concurrent patients with uncomplicated T2DM(control group,Con)diagnosed at Zhejiang Provincial People’s Hospital between January 2019 and December *** NLR and RDW values were determined and comparatively analyzed,and their levels in T2DM+HF patients with different cardiac function grades were *** receiver operating characteristic(ROC)curves were plotted to determine the NLR and RDW values(alone and in combination)for the early diagnosis of *** correlation between NLR and RDW with the presence or absence of cardiac events was also *** Higher NLR and RDW levels were identified in the Res vs the Con groups(P<0.05).The NLR and RDW increased gradually and synchronously with the deterioration of cardiac function in the Res group,with marked differences in their levels among patients with grade II,III,and IV HF(P<0.05).ROC curve analysis revealed that NLR combined with RDW detection had an area under the curve of 0.915,a sensitivity of 76.9%,and a specificity of 100%for the early diagnosis of ***,HF patients with cardiac events showed higher NLR and RDW values compared with HF patients without cardiac *** NLR and RDW were useful laboratory indicators for the early diagnosis of DM complicated with HF,and their joint detection was beneficial for improving diagnostic ***,NLR and RDW values were directly proportional to patient outcomes.

关键词： Neutrophil-lymphocyte ratio Red blood cell distribution width Type 2 diabetes Heart failure Early diagnosis

Existence of Positive Periodic Solutions for Nonautonomous Predator-prey Systems with Discrete and Continuously Distributed Delays

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Acta Mathematicae Applicatae Sinica 2007年第1期23卷 39-48页

作者： yan lv Wei lv Jian-hua Sun Department of Mathematics Nanjing University Nanjing 210008 China Department of Mathematics Xi'an Jiao Tong University Xi'an 710049 China

By using the continuation theorem of coincidence degree theory, the sufficient conditions to guarantee the existence of positive periodic solutions are established for nonautonomous predator-prey systems with discrete... 详细信息

关键词： Predator-prey system time delay positive periodic solution Fredholm operator coincidence degree

New Li-ion Battery Evaluation Research Based on Thermal Property and Heat Generation Behavior of Battery

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Chinese Journal of Chemical Physics 2012年第6期25卷 725-732,I0004页

作者： Zhe lv Xun Guo Xin-ping Qiu Key Laboratory of Organic Optoelectronics and Molecular Engineering Department of ChemistryTsinghua University Be~iing 100084 China

We do a new Li-ion battery evaluation research on the effects of cell resistance and polariza- tion on the energy loss in batteries based on thermal property and heat generation behavior of battery. Series of 18650 cells with different capacities and electrode materials are evalu- ated by measuring input and output energy which change with charge-discharge time and current. Based on the results of these tests, we build a model of energy loss in cells＇ charge- discharge process, which include Joule heat and polarization heat impact factors. It was reported that Joule heat was caused by cell resistance, which included De-resistance and reaction resistance, and reaction resistance could not be easily obtained through routine test method. Using this new method, we can get the total resistance R and the polarization parameter U. The relationship between R, η, and temperature is also investigated in order to build a general model for series of different Li-ion batteries, and the research can be used in the performance evaluation, state of charge prediction and the measuring of consistency of the batteries.

关键词： Li-ion battery Energy loss Heat Cell resistance Polarization State of chargeprediction