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水溶液中微量Cu元素的激光诱导光谱检测

光谱学与光谱分析 2012年第10期32卷 2820-2823页

作者：钱惠国周卫东浙江师范大学信息光学研究所浙江金华321004

采用普通打印纸作为基底置于含有痕量重金属离子的水溶液中,用于富集溶液中的重金属Cu元素,烘干后用激光诱导击穿光谱进行定量分析。该方法克服了用激光诱导击穿光谱方法直接分析液相样品中重金属含量时存在水的溅射和灵敏度低等不足。... 详细信息

采用普通打印纸作为基底置于含有痕量重金属离子的水溶液中,用于富集溶液中的重金属Cu元素,烘干后用激光诱导击穿光谱进行定量分析。该方法克服了用激光诱导击穿光谱方法直接分析液相样品中重金属含量时存在水的溅射和灵敏度低等不足。实验中选用324.7nm的光谱线作为分析线,研究了光谱强度与富集时间的关系,建立了用于溶液中Cu元素定量测量的校正曲线,检测限达到0.023mg.L-1。为水体中重金属检测提供了一个可行的具有良好灵敏度分析技术。

关键词： LIBS Cu溶液定量分析纸片

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计算机制作平板型周视彩虹全息

光电子．激光 2005年第3期16卷 372-375页

作者：钱惠国王辉金洪震浙江师范大学信息光学研究所浙江金华321004

利用计算机制作全息图简洁和灵活性,在光学周视彩虹全息的基础上提出了计算周视平板彩虹全息。在菲涅耳衍射理论的近似框架下,从理论推导出基元周视全息的物光分布。实际物体在记录面上的物光分布可以看成是物体上所有物点的基元周视全... 详细信息

利用计算机制作全息图简洁和灵活性,在光学周视彩虹全息的基础上提出了计算周视平板彩虹全息。在菲涅耳衍射理论的近似框架下,从理论推导出基元周视全息的物光分布。实际物体在记录面上的物光分布可以看成是物体上所有物点的基元周视全息物光分布的叠加。根据这一原理,模拟光学全息原理,计算出物体周视全息的物光和参考光的干涉条纹,从而获得平板周视全息图。该方法克服了光学平板周视全息在制作光路上的复杂性,使得周视全息图的制作简便易行。给出了实验证明。

关键词：计算全息彩虹全息周视平板型

Alcohol consumption in relation to the incidence of atrial fibrillation in an elderly Chinese population

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Journal of Geriatric Cardiology 2022年第1期19卷 52-60页

作者： Xiao-Fei YE Wei ZHANG Yi CHEN Chao-Ying MIAO Qi-Fang HUANG Chang-Sheng SHENG Shuai SHAO Dian WANG Shao-Kun XU Lei LEI Di ZHANG Yi-Lin CHEN Lei-Xiao HU Jia-hui XIA Yi-Bang CHENG Ying WANG qian-hui guo Yan LI Nicole Lowres Ben Freedman Ji-Guang WANG School of Public Health Shanghai Jiao Tong University School of MedicineShanghaiChina Department of Cardiovascular Medicine The Shanghai Institute of HypertensionRuijin HospitalShanghai Jiao Tong University School of MedicineShanghaiChina Heart Research Institute Sydney Medical SchoolCharles Perkins Centerand Cardiology DepartmentConcord HospitalUniversity of SydneySydneyAustralia

BACKGROUND Alcohol consumption is a known modifiable risk factor for atrial *** association,however,might differ according to *** investigated gender-specific associations between alcohol consumption and incident atrial fibrillation in an elderly Chinese *** Our study participants were elderly residents(≥65 years)recruited from five community health centers in the urban area of Shanghai(n=6,618).Alcohol intake was classified as never drinkers and current light-to-moderate(<40 g/day)and heavy drinkers(≥40 g/day).Atrial fibrillation was detected by a 30-s single-lead electrocardiography(ECG,AliveCor®Heart Monitor)and further evaluated with a regular 12-lead *** During a median of 2.1 years(interquartile range:2.0−2.2)follow-up,the incidence rate of atrial fibrillation was 1.10%in all study *** was slightly but non-significantly higher in men(n=2849)than women(n=3769,1.30%vs.0.96%,P=0.19)and in current drinkers(n=793)than never drinkers(n=5825,1.64%vs.1.03%,P=0.12).In both unadjusted and adjusted analyses,there was interaction between sex and current alcohol intake in relation to the incidence of atrial fibrillation(P<0.0001).After adjustment for confounding factors,current drinkers had a significantly higher incidence rate of atrial fibrillation than never drinkers in women(12.96%[7/54]vs.0.78%[29/3715],adjusted odds ratio[OR]=10.25,95%confidence interval[CI]:3.54−29.67,P<0.0001),but not in men(0.81%[6/739]vs.1.47%[31/2110],OR=0.62,95%CI:0.25−1.51,P=0.29).CONCLUSIONS Our study showed a significant association between alcohol intake and the incidence of atrial fibrillation in elderly Chinese women,but not men.

关键词： fibrillation intake Alcohol

Rational modulation of fluorophosphate cathode by anionic groups to reduce the polarization behavior for fast-charging sodium-ion batteries

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Journal of Energy Chemistry 2025年第1期100卷 509-521页

作者： Xinyuan Wang Fan Zhang Xingyu Zhou qian Wang Changyu Liu Yangyang Liu hui Wang Xiaojie Liu Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education College of Chemistry & Materials Science Northwest University

Na3V2（PO4）2O2F （VP） is recognized as a promising cathode material for sodium-ion batteries due to its stable structural framework and high specific *** functional theory （DFT） and finite element simulations show that incorporating SO42-into VP decreases its band gap,lowers the migration energy barrier,and ensures a uniform Na+concentration gradient and stress distribution during charge and discharge ***,the average Na+diffusion coefficient of Na3V2（PO4）1.95（SO4）0.05O2F（VPS-1） is roughly double that of VP,leading to enhanced rate capability (80 C,75.5 mAh g-1) and cycling stability (111.0 mAh g-1capacity after 1000 cycles at 10 C current density) for ***-1 exhibits outstanding fast-charging capabilities,achieving an 80%state of charge in just 8.1 *** assembled VPS-1//SbSn/NPC full cell demonstrated stable cycling over 200 cycles at a high 5 C current,maintaining an average coulombic efficiency of 95.35%.

关键词： Anionic group modulation Polarization behavior Fast-charging Sodium-ion battery Fluorophosphate Cathode

Unraveling the significance of cobalt on transformation kinetics,crystallography and impact toughness in high-strength steels

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 380-390页

作者： Yishuang Yu Jingxiao Zhao Xuelin Wang hui guo Zhenjia Xie Chengjia Shang Collaborative Innovation Center of Steel Technology University of Science and Technology BeijingBeijing 100083China School of Materials Science and Engineering Shanghai Jiao Tong UniversityShanghai 200240China State Key Laboratory for Advanced Metals and Materials University of Science and Technology BeijingBeijing 100083China

This work reveals the significant effects of cobalt(Co)on the microstructure and impact toughness of as-quenched highstrength steels by experimental characterizations and thermo-kinetic *** results show that the Co-bearing steel exhibits finer blocks and a lower ductile-brittle transition temperature than the steel without ***,the Co-bearing steel reveals higher transformation rates at the intermediate stage with bainite volume fraction ranging from around 0.1 to *** improved impact toughness of the Co-bearing steel results from the higher dense block boundaries dominated by the V1/V2 variant ***,the addition of Co induces a larger transformation driving force and a lower bainite start temperature(BS),thereby contributing to the refinement of blocks and the increase of the V1/V2 variant *** findings would be instructive for the composition,microstructure design,and property optimization of high-strength steels.

关键词： high-strength steel cobalt transformation kinetics crystallography impact toughness

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多光谱和SAR遥感图像融合分类的特征选取

红外与毫米波学报 2000年第6期19卷 449-453页

作者：于秀兰钱国蕙贾晓光哈尔滨工业大学电子与通信工程系黑龙江哈尔滨150001

针对多光谱和 SAR遥感图像特征层融合分类的特征选取问题 ,以 L andsat卫星的 TM图像和 JERS- 1卫星的 SAR图像融合分类为例 ,给出了一种基于 Rough Set理论的最佳分类特征选取方法 .

关键词： Rough Set理论多光谱和SAR遥感图像融合分类特征选取

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基于VB6.0的加热炉热平衡计算软件开发

煤炭技术 2016年第2期35卷 287-289页

作者：王帅钱惠国上海应用技术学院上海201418

在Visual Basic 6.0的环境下,联合Microsoft office Excel 2003和Microsoft office Access 2003数据库编制了1套加热炉热平衡计算软件。该软件通用性强、操作简单、适用性广、界面友好;引入的专家数据库,可以收集并提供提高加热炉热效... 详细信息

在Visual Basic 6.0的环境下,联合Microsoft office Excel 2003和Microsoft office Access 2003数据库编制了1套加热炉热平衡计算软件。该软件通用性强、操作简单、适用性广、界面友好;引入的专家数据库,可以收集并提供提高加热炉热效率的专业意见;原始数据、中间数据及计算结果生成标准格式Excel报表,方便用户知晓加热炉的运行状况。利用该软件对某加热炉实测数据进行计算,软件运行稳定,计算快速,计算结果可靠,具有一定的工程实用价值。

关键词：加热炉热平衡计算 VB6.0 软件开发

CaH2-promoted activity of Ni-carbonate interface for CO2 methanation

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Journal of Energy Chemistry 2025年第1期100卷 522-532页

作者： Jin-Peng Wang guo-Cui Mao hui-Lin Jiang Bao-Xia Dong Yun-Lei Teng School of Chemistry and Chemical Engineering Yangzhou University

Transition metal-carbonate interfaces often act as active sites in heterogeneous catalytic *** interface between transition metal and metal carbonate exhibits a dynamic equilibrium during the CO2hydrogenation reaction,involving surface carbonate hydrogenation and ***,there have been few reports on engineering the activity of the interface between transition metal and alkaline earth metal carbonate for catalytic *** work demonstrated that the incorporation of CaH2in Ni/CaCO3enhances the CO2methanation activity of the *** CO2conversion for Ni/CaH2-CaCO3reached 68.5%at 400°C,which was much higher than that of the Ni/CaCO3（31.6%） and Ni/CaH2-CaO （42.4%） ***,the Ni/CaH2-CaCO3catalysts remained stable during the stability test for 24 h at 400°C and 8 *** research revealed that CaH2played a crucial role in promoting the activity of the Ni-carbonate interface for ***2could modify the electronic structure of Ni and tune the structural properties of CaCO3to generate medium basic sites （OH groups）,which are favorable for the activation of H2and ***-situ Fourier transform infrared spectroscopy （FTIR） analysis combined with density functional theory calculations demonstrated that CO2activation occurs at the hydroxyl group （OH） on the CaH2-modified Ni-carbonate surface,leading to the formation of CO3H****,our study has confirmed that CO2methanation over the Ni/CaH2-CaCO3catalysts proceeds via the formate pathway.

关键词： CO 2 methanation Metal hydride Ni catalysts Carbonate Metal-carbonate interface

Design of multifunctional interfaces on ceramic solid electrolytes for high-performance lithium-air batteries

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Green Energy & Environment 2025年第1期10卷 183-192页

作者： Yunxin Shi Ziyang guo Changhong Wang Mingze Gao Xiaoting Lin hui Duan Yonggang Wang Xueliang Sun College of Energy Material and Chemistry College of Chemistry and Chemical EngineeringInner Mongolia UniversityHohhot010021China Department of Mechanical and Materials Engineering Western UniversityLondonONN6A 5B9Canada Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials Institute of New EnergyiChEM(Collaborative Innovation Center of Chemistry for Energy Materials)Fudan UniversityShanghai200433China Eastern Institute for Advanced Study Eastern Institute of TechnologyNingboZhejiang315100China

High-energy-density lithium(Li)–air cells have been considered a promising energy-storage system,but the liquid electrolyte-related safety and side-reaction problems seriously hinder their *** address these above issues,solid-state Li–air batteries have been widely ***,many commonly-used solid electrolytes generally face huge interface impedance inLi–air cells and also showpoor stability towards ambient air/Li ***,we fabricate a differentiating surface-regulated ceramic-based composite electrolyte(DSCCE)by constructing disparately LiI-containing polymethyl methacrylate(PMMA)coating and Poly(vinylidene fluoride-co-hexafluoropropylene)(PVDF-HFP)layer on both sides of Li_(1.5)Al_(0.5)Ge_(1.5)(PO_(4))_(3)(LAGP).The cathode-friendly LiI/PMMA layer displays excellent stability towards superoxide intermediates and also greatly reduces the decomposition voltage of discharge products in Li–air ***,the anode-friendly PVDF-HFP coating shows low-resistance properties towards ***,Li dendrite/passivation derived from liquid electrolyte-induced side reactions and air/I-attacking can be obviously suppressed by the uniformand compact composite *** a result,the DSCCE-based Li–air batteries possess high capacity/low voltage polarization(11,836mAh g^(-1)/1.45Vunder 500mAg^(-1)),good rate performance(capacity ratio under 1000mAg^(-1)/250mAg^(-1) is 68.2%)and longterm stable cell operation(~300 cycles at 750 mA g^(-1) with 750 mAh g^(-1))in ambient air.

关键词： Li-air batteries Li_(1.5)Al_(0.5)Ge_(1.5)(PO_(4))_(3) Polymers Composite electrolyte Ambient air