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ITO thin films prepared by electron beam evaporation with End-Hall ion source assisted without heating to the substrate

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光学精密工程 2005年第4期13卷 397-402页

作者： GAO jin-song xu Ying wang Xiao-yi wang Tong-tong Optical Technology and Research Center Changchun Institute of Optics Fine Mechanics and Physics Chinese Academy of Sciences Changchun 130022 China

ITO （indium oxide doped with tin） thin films were deposited on glass substrates by using ITO pellet with a composition of w（In2O3）=90% and w（SnO2）=10% by electron beam evaporated with End-Hall ion source assisted without extra heating. The rate of deposition and flow rate of oxygen were measured and changed to obtain the best properties of ITO thin films. Furthermore, the post annealing process was done in vacuum at different annealing temperatures for 2 h and at 400℃ for different keeping time, respectively. The relation between optical, electrical properties and structure was discussed in detail.

关键词： ITO 薄膜电子束离子源

Blocking the Aryl Hydrocarbon Receptor Alleviates Myocardial Ischemia/Reperfusion Injury in Rats

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Current Medical Science 2022年第5期42卷 966-973页

作者： jin-xu wang Bei-bei wang Shu-zhang YUAN Ke xuE jin-sheng ZHANG Ai-jun xu Department of Anesthesiology Tongji HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430030China Department of Anesthesiology Huashan Hospital of Fudan UniversityShanghai 200040China Henan University of Traditional Chinese Medicine Zhengzhou 450000China

Objective Restoring the blood perfusion of ischemic heart tissues is the main treatment for myocardial ***,the accompanying myocardial ischemia reperfusion injury(IRI)would aggravate myocardial *** studies have confirmed that aryl hydrocarbon receptor(AhR)is closely correlated to kidney and intestinal *** present study aimed to explore the relationship between AhR and myocardial *** An oxygen glucose deprivation/reoxygenation(OGD/R)model of H9c2 cells and an ischemia/reperfusion(I/R)model of Sprague-Dawley rat myocardium were ***/R cells and myocardial IRI rats were treated with different concentrations of the AhR antagonist CH-223191 or agonist 6-formylindolo[3,2-b]carbazole(FICZ).Under the conditions of normoxia and hypoxia/reoxygenation,the activity of cardiomyocytes,lactate dehydrogenase(LDH)and cell reactive oxygen species(ROS)were *** rats,myocardial pathological damage and markers of myocardial injury were *** According to the results of the cell viability,LDH and ROS tests in vitro,both CH-223191 and FICZ showed no myocardial protection under OGD/R ***,the histological staining and analysis of myocardial injury marker LDH in vitro revealed that CH-223191 could significantly reduce the myocardial *** AhR exhibited a different effect on myocardial IRI in vitro and in *** vivo,CH-223191 could significantly alleviate the myocardial IRI,suggesting that inhibition of AhR may play a role in myocardial protection,and AhR may serve as a potential treatment target for myocardial IRI.

关键词： aryl hydrocarbon receptor ischemia/reperfusion injury myocardial protection CH-223191 6-formylindolo[3,2-b]carbazole

Optimizing Seed Water Content:Relevance to Storage Stability and Molecular Mobility

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Journal of Integrative Plant Biology 2010年第3期52卷 324-331页

作者： Ming Zhang Jia-jin Zhuo xu wang Sen Wu Xiao-Feng wang Key Laboratory for Genetics and Breeding in Forest Trees and Ornamental Plants Ministry of Education Beijing Forestry University Beijing 100083 China

This research was conducted to determine the optimum moisture content （MC） that gave maximum longevity to seeds. Three species were used to represent seeds with different dry matter reserves, which gives them different sorption properties： maize （Zea mays L.）, elm （Ulmus pumila L.） and safflower （Carthamus tinctorius L.）. The seeds of elm, safflower, and maize embryos with MC ranging from 0.00- 0.15 g H2O/g dry weight （DW） were stored at 35℃ for different periods of time. The results showed that the optimum MC for seed and embryo storage varied between species （0.057 g H20/g DW for maize embryos, 0.045 g H20/g DW for elm, and 0.02 g H2O/g DW for safflower）. Drying below this optimum MC increased the aging rate and there were detrimental effects of drying. The relative humidity corresponding to optimum MC in embryos of maize, elms and safflower was about 15%, 12% and 7% respectively, according to the lipid composition of the embryos. The data provided confirmatory evidence that molecular mobility （△Azz） in elms, maize and safflower embryos was compatible with the optimum moisture content.

关键词： SEEDS MOISTURE CORN ELM SAFFLOWER MOLECULAR microbiology QUANTITATIVE research

Magnetic properties and structure of (001)-oriented [CoPt/C]_n /Ag nanocomposite films on the glass substrates

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Rare Metals 2006年第3期25卷 265-269页

作者： jin Tao xu Xiaohong wang Fang LI Xiaoli JIANG Fengxian YANG Zhiguang School of Chemistry and Materials Science Shanxi Normal University Linfen 041004 China

The highly （1301） oriented triple system of [CoPt/C]n/Ag films was deposited on glass substrates by DC and RF magnetron sputtering. After annealing at 600℃ for 30 min, thin films become magnetically hard with coercivities in the range of 160-875 kA/m because of high anisotropy associated with the L10 ordered phase. C doping plays an important role in improving （001） texture and reducing the intergrain interactions. The oriented growth of CoPt films was influenced strongly by the number of repetitions （n） of CoPt/C. By controlling the C content and the number of repetitions （n） of CoPt/C, nearly perfect （001） orientation can be obtained in the [CoPt3nm/C3nm]5/Ag50 nm.

关键词： [CoPt/C]n/Ag multilayer films (001) orientation C content number of repetition

Prescribed Performance Tracking Control of Time-Delay Nonlinear Systems With Output Constraints

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IEEE/CAA Journal of Automatica Sinica 2024年第7期11卷 1557-1565页

作者： jin-Xi Zhang Kai-Di xu Qing-Guo wang IEEE the State Key Laboratory of Synthetical Automation for Process Industries Northeastern UniversityShenyang 110819China Institute of Artificial Intelligence and Future Networks Beijing Normal UniversityZhuhai 519087 Guangdong Key Laboratory of Artificial Intelligence and Multi-Modal Data Processing Beijing Normal University-Hong Kong Baptist University United International CollegeZhuhai 519087

The problem of prescribed performance tracking control for unknown time-delay nonlinear systems subject to output constraints is dealt with in this paper. In contrast with related works, only the most fundamental requirements, i.e., boundedness and the local Lipschitz condition, are assumed for the allowable time delays. Moreover, we focus on the case where the reference is unknown beforehand, which renders the standard prescribed performance control designs under output constraints infeasible. To conquer these challenges, a novel robust prescribed performance control approach is put forward in this ***, a reverse tuning function is skillfully constructed and automatically generates a performance envelop for the tracking error. In addition, a unified performance analysis framework based on proof by contradiction and the barrier function is established to reveal the inherent robustness of the control system against the time delays. It turns out that the system output tracks the reference with a preassigned settling time and good accuracy,without constraint violations. A comparative simulation on a two-stage chemical reactor is carried out to illustrate the above theoretical findings.

关键词： Nonlinear systems output constraints prescribed performance reference tracking time delays

Enhanced photocatalytic hydrogen production from Co-MOF/CN by nitrogen and sulfur co-doped coal-based carbon quantum dots

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Journal of Rare Earths 2024年第5期42卷 838-850,I0002页

作者： Shiyong xu Mei Li Yijun wang Caiyun Gao Rongsheng xu Zhiliang jin School of Chemistry and Chemical Engineering North Minzu UniversityYinchuan750021China Ningxia Key Laboratory of Solar Chemical Conversion Technology.North Minzu University.Yinchuan 750021China State Key Laboratory of National Ethnic Affairs Commission Chemical Technology.North Minzu University Yinchuan750021China

A novel composite photocatalyst for photocatalytic decomposition of water for hydrogen evolution was successfully synthesized by in-situ growth of nitrogen and sulfur co-doped coal-based carbon quantum dots(NSCQDs)nanoparticles on the surface of sheet cobalt-based metal-organic framework(Co-MOF)and graphitic carbon nitride(g-C_(3)N_(4),CN).The structure and properties of the obtained catalysts were systematically *** effectively broaden the absorption of Co-MOF and CN in the visible *** new composite photocatalyst has high hydrogen production activity and the hydrogen production rate reaches 6254μmol/(g·h)at pH=*** the same time,NSCQDs synergy Co-MOF/CN composites have good *** four cycles of hydrogen production,the performance remains relatively *** tran sient photocurrent response and Nyquist plot experimental results further demonstrate the improvement of carrier separation efficiency in composite *** semiconductor type(n-type semico nductor)of the single-phase catalyst was determined by the Mott-Schottky test,and the band structure was *** conductive and valence bands of CN are-0.99 and 1.72 eV,respectively,and the conduction and valence bands of Co-MOF are-1.85 and 1.33 eV,*** e mechanism of the photocatalytic reaction can be inferred,that is,Z-type heterojunction is formed between CN an d Co-MOF,and NSCQDs was used as cocatalyst.

关键词： Nitrogen and sulfur co-doped Coal-based carbon quantum dots Co-MOF CN Photocatalytic hydrogen evolution Rare earths

Effects of size variation and spatial structure on plastic response of plant height to light competition

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Chinese Science Bulletin 2010年第12期55卷 1135-1141页

作者： CHEN ShuYan ZHANG JiaLin JIA Peng xu jin wang Gang XIAO Sa Key Laboratory of Arid and Grassland Ecology of Ministry of Education School of Life Science Lanzhou University Lanzhou 730000 China

Plants only interact with neighbors over restricted distances,so local conditions are of great significance for *** this study,a spatially-explicit,individual-based model was constructed to explore the effects of size variation and spatial structure on adaptive plasticity of plant height in response to light *** the model a plant maintains its height at an optimal value in order to maximize its growth rate,and this optimal height increases with the increase of the intensity of light competition experienced by the individual *** the spatial pattern of the population is non-uniform or there is size variation among individual plants,the height growth curves of individuals different from each other vary due to the differences in the local light environment,and there is also variation in the allocation of photosynthate to height growth among the individual *** is no ESS height or height growth strategy on which all plants will *** results indicate that the plasticity of plants' height growth reactions to the light competition should be considered at the individual level and they argue strongly for the importance of the spatial pattern and neighborhood effects in generating the diversity of heights and height growth strategies in plant population.

关键词：空间结构光响应竞争塑料株高空间分布格局变异单株生长曲线

Influence of crystal-transforming agent on the performance and mechanism ofα-high-strength gypsum prepared from FGD gypsum

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Particuology 2024年第4期87卷 37-45页

作者： Zhuoyue xu Xiao wang Biao jin Dawang Zhang Hui Li College of Materials Science and Engineering Xi'an University of Architecture and TechnologyXi'an710055China Schoolof Materials and Chemical Engineering Henan University of Urban ConstructionPingdingshan46736China

This paper investigates the impact of flue gas desulfurization(FGD)gypsum's crystal modifier on the characteristics and microcosmic mechanism ofα-high strength *** results demonstrate that all three crystal modifiers can convert FGD gypsum toα-high-strength *** acid(CA)has the most significant influence onα-high-strength gypsum,and the preparedα-high-strength gypsum is short columnar,with an aspect ratio in the range of 1-3,and has a faster setting time,a larger specific surface area,and a smaller standard consistency,higher compressive strength,greater surface hardness,and smaller crystal particle *** initial setting time of theα-high-strength gypsum manufactured with CA crystal modifier was decreased by 36%compared to the blank sample,the final setting time was lowered by 37.5%,and the water consumption of the standard consistency was reduced by 8%.The maximum strength is 32 MPa after 2 h,the absolute dry compressive strength is up to 38 MPa,and the surface hardness is improved by 24.43%.

关键词： Flue gas desulfurization gypsum Crystal modifier Microscopic mechanism α-high-strength gypsum

Facile Resolution of Racemic 4-Phenyl-2-hydroxy Butyrate via Enzymatic Esterification and Transesterification

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Chinese Chemical Letters 1991年第12期2卷 927-928页

作者： jin wang xu Zu yi Li Shanghai Institute of Organic Chemistry Academia Sinica 345 Lingling LuShanghai200032

The optically active R-4-phenyl-2-hydroxy butyrates were prepared by esterification of the racemic acid or transesterification of the racemic ester catalyzed by lipase from Candida cyclindra (CCL) in organic media.

关键词： Res Facile Resolution of Racemic 4-Phenyl-2-hydroxy Butyrate via Enzymatic Esterification and Transesterification