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CoSe_(2) nanobelt coupled with CoMoO_(4) nanosheet as efficient electrocatalysts for hydrogen and oxygen evolution reaction

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Environmental Science and Ecotechnology 2020年第1期1卷 21-27页

作者： Qiu-sheng Zhou xin-wen Peng Lin-xin zhong Run-cang Sun State Key Laboratory of Pulp and Paper Engineering South China University of TechnologyGuangzhou510641China Center for Lignocellulose Science and Engineering Liaoning Key Laboratory Pulp and Paper EngineeringDalian Polytechnic UniversityDalian116034LiaoningChina

Designing non-noble electrocatalysts with low-cost and efficient is crucial to the development of sustainable and clean energy ***,we synthesized a novel S-CoSe_(2)/CoMoO_(4) and O-CoSe_(2)/CoMoO_(4) hybrid electrocatalysts for the HER and OER,*** due to the synergetic chemical coupling effects between CoSe_(2)/DETA and CoMoO_(4),and the introduction of S heteroatom and oxygen vacancy,this hybrid could expose enough active edges,and then promoted the constructed hybrid displayed superior hydrogen evolution reaction(HER)and oxygen evolution reaction(OER)catalytic *** S-CoSe_(2)/CoMoO_(4) sample afforded a current density of 10 mAcm^(-2) at a small overpotential of 177 mV and a small Tafel slope of 54 mV dec^(-1).Moreover,the oxidized CoSe_(2)/CoMoO_(4)(O-CoSe_(2)/CoMoO_(4))also displayed a remarkable catalytic property for OER with a small Tafel slope of 43 mV dec^(-1),as well as excellent stability in 1.0 M ***,this noblemetal-free and highly efficient catalyst enables prospective applications for electrochemical applications.

关键词： Hydrogen evolution Hybrid Synergetic Oxygen evolution Stability

Effects of meteorological factors on different grades of winter wheat growth in the Huang-Huai-Hai Plain, China

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Journal of Integrative Agriculture 2016年第11期15卷 2647-2657页

作者： HUANG Qing WANG Li-min CHEN zhong-xin LIU Hang Institute of Agricultural Resources and Regional Planning Chinese Academy of Agricultural Sciences

The sown area of winter wheat in the Huang-Huai-Hai（HHH） Plain accounts for over 65% of the total sown area of winter wheat in China. Thus, it is important to monitor the winter wheat growth condition and reveal the main factors that influence its dynamics. This study assessed the winter wheat growth condition based on remote sensing data, and investigated the correlations between different grades of winter wheat growth and major meteorological factors corresponding. First, winter wheat growth condition from sowing until maturity stage during 2011–2012 were assessed based on moderate-resolution imaging spectroradiometer（MODIS） normalized difference vegetation index（NDVI） time-series dataset. Next, correlation analysis and geographical information system（GIS） spatial analysis methods were used to analyze the lag correlations between different grades of winter wheat growth in each phenophase and the meteorological factors that corresponded to the phenophases. The results showed that the winter wheat growth conditions varied over time and space in the study area. Irrespective of the grades of winter wheat growth, the correlation coefficients between the winter wheat growth condition and the cumulative precipitation were higher than zero lag（synchronous precipitation） and one lag（pre-phenophase precipitation） based on the average values of seven phenophases. This showed that the cumulative precipitation during the entire growing season had a greater effect on winter wheat growth than the synchronous precipitation and the pre-phenophase precipitation. The effects of temperature on winter wheat growth varied according to different grades of winter wheat growth based on the average values of seven phenophases. Winter wheat with a better-than-average growth condition had a stronger correlation with synchronous temperature, winter wheat with a normal growth condition had a stronger correlation with the cumulative temperature, and winter wheat with a worse-than-average growth

关键词： growth condition meteorological factors remote sensing spatiotemporal correlation winter wheat HuangHuai-Hai(HHH) Plain region China

NUMERICAL STUDY OF FLOW AND DILUTION BEHAVIOR OF RADIAL WALL JET

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Journal of Hydrodynamics 2010年第5期22卷 681-688页

作者： LI Zhi-wei HUAI Wen-xin QIAN zhong-dong ZENG Yu-hong YANG zhong-hua State Key Laboratory of Water Resources and Hydropower Engineering Science Wuhan University Wuhan 430072 China

The radial wall jet is a flow configuration that combines the radial jet and the wall jet. This article presents a simulation of the radial wall jet by applying the transition Shear-Stress Transport （ SST） model. Tanaka’s experimental data are used for validation. The computed velocity profiles agree well with the experimental ones. The distributions of the velocity on cross-sections show a similarity in the main region and the profiles are different with those of the free radial jet or the wall jet, because the presence of the wall limits the expansion of the jet. By introducing the equivalent nozzle width, the maximum velocity decays and the half-width distributions are normalized, respectively. In addition to compare the flow field with experiments, this paper also analyzes the dilution effect of radial wall jets in terms of the concentration distributions. The concentrations on the wall keep constant within a certain distance from the nozzle. And the concentration distributions also show a similarity in the main region. Both the decays of the maximum concentration and the distributions of the concentration half-width fall into a single curve, respectively. The dilution effect of radial wall jets is thus verified.

关键词： radial wall jet velocity profile concentration distribution concentration half-width

Design of a spatial sampling scheme considering the spatial autocorrelation of crop acreage included in the sampling units

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Journal of Integrative Agriculture 2018年第9期17卷 2096-2106页

作者： WANG Di ZHOU Qing-bo YANG Peng CHEN zhong-xin Key Laboratory of Agricultural Remote Sensing Ministry of Agriculture/Institute of Agricultural Resources and Regional PlanningChinese Academy of Agricultural Sciences

Information on crop acreage is important for formulating national food polices and economic planning. Spatial sampling, a combination of traditional sampling methods and remote sensing and geographic information system （GIS） technology, provides an efficient way to estimate crop acreage at the regional scale. Traditional sampling methods require that the sampling units should be independent of each other, but in practice there is often spatial autocorrelation among crop acreage contained in the sampling units. In this study, using Dehui County in Jilin Province, China, as the study area, we used a thematic crop map derived from Systeme Probatoire d＇Observation de la Terre （SPOT-5） imagery, cultivated land plots and digital elevation model data to explore the spatial autocorrelation characteristics among maize and rice acreage included in sampling units of different sizes, and analyzed the effects of different stratification criteria on the level of spatial autocorrelation of the two crop acreages within the sampling units. Moran＇s/, a global spatial autocorrelation index, was used to evaluate the spatial autocorrelation among the two crop acreages in this study. The results showed that although the spatial autocorrelation level among maize and rice acreages within the sampling units generally decreased with increasing sampling unit size, there was still a significant spatial autocorrelation among the two crop acreages included in the sampling units （Moran＇s / varied from 0.49 to 0.89）, irrespective of the sampling unit size. When the sampling unit size was less than 3000 m, the stratification design that used crop planting intensity （CPI） as the stratification criterion, with a stratum number of 5 and a stratum interval of 20% decreased the spatial autocorrelation level to almost zero for the maize and rice area included in sampling units within each stratum. Therefore, the traditional sampling methods can be used to estimate the two crop acreages. Compared with CPI

关键词： crop acreage spatial autocorrelation sampling unit planting intensity cultivated land fragmentation ground slope

An Active Hybrid Electrocatalyst with Synergized Pyridinic Nitrogen-Cobalt and Oxygen Vacancies for Bifunctional Oxygen Reduction and Evolution

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Chinese Journal of Chemistry 2021年第3期39卷 655-660页

作者： Wen-xin zhong Xue-Ru Zhao Jia-Yi Qin Jing Yang School of Materials Science and Engineering Institute of New Energy MaterialsTianjin UniversityTianjin 300072China

Main observation and conclusion A hybrid bifunctional oxygen reduction reaction(ORR)/oxygen evolution reaction(OER)NiCo_(2)O_(4-x)/NLG with rich pyridinic-nitrogen-cobalt coordination and oxygen vacancies was synthesized via a combination of the hydrothermal method and pulsed laser ***_(2)O_(4-x)/NLG exhibits an excellent catalytic activity with a low overpotential of 290 mV at 10 ***^(-2)for OER and a high half-wave potential of 0.85 V for *** a result,the overall ORR/OER overpotential ofNiCo_(2)O_(4-x)/NLG is only 0.67 V in 1.0 mol/L KOH electrolyte,which is superior to commercial noble-metal-based catalysts(Pt/C+RuO2).It is evidenced that the enhanced intrinsic OER and ORR activities of NiCo_(2)O_(4-x)/NLG are attributed to a synergistic effect between the pyridinic-N-Co coordination and the oxy-gen *** work provides a new design strategy for enhancing the intrinsic activity of bifunctional ORR/OER electrocatalysts.

关键词： Graphene Heterogeneous catalysis Electrochemistry Oxygen evolution reaction Oxygen reduction reaction

Theoretical and numerical investigations on the headspace of cartridge cases considering axial deformation and movement

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Defence Technology（防务技术） 2020年第1期16卷 88-95页

作者： Song Cai Chen-lei Huang Kun Liu zhong-xin Li Zhi-lin Wu School of Mechanical Engineering Nanjing University of Science and TechnologyNanjing 210094JiangsuChina

The cartridge case headspace is the axial clearance between the cartridge and bolt of an automatic weapon,and influences the reliability and security of the ***,theoretical and numerical studies were conducted to analyze the dynamic response of cartridge cases during internal impact considering the initial radial clearances between the cartridge case and chamber.A theoretical model was proposed to predict the cartridge case headspace considering both the deformation and movement of the cartridge case and confirmed by the results of nonlinear finite element *** differences between the results of the conventional static model and the dynamic model were then comprehensively *** effects of the angle between the cartridge and chamber,the cartridge case material,and the intermal impact pressure on the predicted headspace value were also *** dynamic response of the cartridge case predicted by the dynamic model was more accurate than that predicted by the conventional static *** internal impact pressure,pressure change rate,and cartridge material were all found to affect the predicted headspace.

关键词： Cartridge case headspace Radial clearance Thick-walled cylinder Dynamic response

Menstrual and Reproductive Characteristics of Patients with Primary Sjogren’s Syndrome:A 7-year Single-center Retrospective Study

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Current Medical Science 2023年第1期43卷 139-145页

作者： Ying-zi ZHU Ji-xin zhong Ling-li DONG Department of Rheumatology and Immunology Tongji HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan430030China

Objective Primary Sjogren’s syndrome(pSS)is a systemic autoimmune disease that mainly affects the exocrine gland,especially in ***,the results of studies on the menstruation or fertility of pSS patients remain *** study aimed to examine the menstrual and reproductive characteristics of pSS *** Clinical data of 449 pSS patients who were admitted to Tongji Hospital in Hubei,China,from January 2015 to November 2021 were obtained and their menstrual and reproductive information *** addition,the clinical features of pSS patients with premenopausal or postmenopausal onset were *** The spontaneous abortion rate of pSS patients was not higher than the reported rate of the general population and that the age of menarche,menstrual cycle,and menstrual period of pSS patients did not significantly differ from those reported in the general population;however,early menopause seemed to be more common in pSS *** involvement(27.96%vs.15.00%,P=0.005)and hyperglobulinemia(10.64%vs.4.16%,P=0.033)were more common in patients with premenopausal pSS onset,but patients with postmenopausal onset had a significantly greater incidence of interstitial lung disease(32.50%vs.17.02%,P=0.0004).Also,erythropenia(47.00%vs.31.25%,P=0.002),hypoalbuminemia(19.49%vs.8.22%,P=0.0009),and prevalence of high hypersensitive C-reactive protein levels(21.67%vs.10.94%,P=0.005)were more common in pSS patients with postmenopausal ***,the rate of abnormal pregnancy was significantly greater in patients with premenopausal onset(9.72%vs.2.50%,P=0.011).Conclusion Patients with pSS onset before or after menopause may have different risks in pulmonary involvement and laboratory manifestations.

关键词： primary Sjogren's syndrome menstruation fertility clinical features

Intra-beam scattering and beam lifetime in a candidate lattice of the soft X-ray diffraction-limited storage ring for the upgraded SSRF

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Nuclear Science and Techniques 2021年第8期32卷 57-66页

作者： xin-zhong Liu Shun-Qiang Tian Xu Wu Meng Wang Zhen-Tang Zhao Shanghai Institute of Applied Physics Chinese Academy of SciencesShanghai 201800China University of Chinese Academy of Sciences Beijing 100049China Shanghai Advanced Research Institute Chinese Academy of SciencesShanghai 201204China Shanghai University Shanghai 200444China

New-generation synchrotron light sources are being designed and operated worldwide to provide brighter radiation by reducing the beam emittance to X-ray diffraction ***-beam scattering(IBS)and Touschek scattering in such facilities are significant and require attention because of their ultra-low ***,cure strategies need to be carefully studied to obtain highquality photon *** the Shanghai Synchrotron Radiation Facility Upgrade(SSRF-U),a candidate lattice of the storage ring,reaching the soft X-ray diffraction limit,was designed and presented for the first time in this *** emittance growth and beam lifetime in the SSRF-U storage ring were studied using particle simulations for a series of different machine *** gains with RF frequencies of 100 MHz and 500 MHz were *** with a better filling pattern,a more suitable RF frequency was adopted in the *** variations in the equilibrium beam emittance with beam coupling and bunch-lengthening were identified using *** beam coupling and required bunch-lengthening for the SSRF-U storage ring were thus *** fitness of the beam energy in the SSRF-U was subsequently assessed using the obtained ***,the Touschek scattering and beam lifetime were calculated,and an acceptable total beam lifetime was obtained.

关键词： Diffraction-Limited Storage Ring(DLSR) Shanghai Synchrotron Radiation Facility Upgrade(SSRFU) Intra-Beam Scattering(IBS) Touschek scattering Beam lifetime

DPP-4 inhibitors and GLP-1RAs:cardiovascular safety and benefits

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Military Medical Research 2023年第2期10卷 227-241页

作者： Michael Razavi Ying-Ying Wei Xiao-Quan Rao Ji-xin zhong Tulane University School of Medicine New OrleansLA 70112USA Department of Rheumatology and Immunology Tongji HospitalTongji Medical College of Huazhong University of Science and Technology1095 Jiefang AveWuhan 430032China Department of Cardiovascular Medicine Tongji HospitalTongji Medical College of Huazhong University of Science and Technology1095 Jiefang AveWuhan 430032China Institute of Allergy and Clinical Immunology Tongji HospitalTongji Medical College of Huazhong University of Science and TechnologyWuhan 430032China

Glucagon-like peptide-1 receptor agonists(GLP-1RAs)and dipeptidyl peptidase-4 inhibitors are commonly used treatments for patients with type 2 diabetes mellitus(T2DM).Both anti-diabetic treatments function by playing key modulatory roles in the incretin *** these drugs have been deemed effective in treating T2DM,the Food and Drug Administration(FDA)and some members of the scientific community have questioned the safety of these therapeutics relative to important cardiovascular *** a result,since 2008,the FDA has required all new drugs for glycemic control in T2DM patients to demonstrate cardiovascular *** present review article strives to assess the safety and benefits of incretin-based therapy,a new class of antidiabetic drug,on the health of patient cardiovascular *** the process,this review will also provide a physiological overview of the incretin system and how key components function in T2DM.

关键词： Glucagon-like peptide-1 receptor agonists Dipeptidyl peptidase-4 inhibitors Type 2 diabetes mellitus Cardiovascular outcome