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Science China(Technological Sciences) 2024年第1期67卷 73-82页

作者： SHANGGUAN shiYong zhang JianGuo LI ZhanZhu shi Wei WANG WenKe QI DongFeng ZHENG HongYu Center for Advanced Laser Manufacturing(CALM) Shandong University of TechnologyZibo 255000China

Laser-induced breakdown spectroscopy(LIBS)is widely used for elemental ***,its application for monitoring and analyzing a laser machining process by examining the changes in spectral information warrants further *** this study,we investigate the effect of laser parameters on the spectra,variations in the time-resolved plasma emission spectra,and the relationship between the morphology of craters and plasma plume evolution during the femtosecond(fs)laser ablation of *** Boltzmann plot method and Stark’s broadening model are employed to estimate the temporal temperature and electron density of the plasma plume,revealing the process of plasma *** study aims to demonstrate the feasibility of LIBS for online monitoring of laser processing through experimental data and theoretical explanations.

关键词： laser-induced breakdown spectroscopy plasma plume online monitoring sapphire

JAK2、CALR、MPL共表达原发性血小板增多症1例并文献复习

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安徽医药 2025年第1期29卷 129-131页

作者：张海亚王彦丽李丽接贵涛潍坊医学院临床医学院山东潍坊261000 临沂市中心医院血液科山东临沂276400

目的探讨1例CALR、JAK2及MPL 3个驱动基因突变阳性的原发性血小板增多症(ET)病人的临床及实验室特征,以提示临床医生在本病的诊断过程中对相关驱动基因突变进行更为精确的检测。方法2022年2月17日收集临沂市中心医院原发性血小板增多症... 详细信息

目的探讨1例CALR、JAK2及MPL 3个驱动基因突变阳性的原发性血小板增多症(ET)病人的临床及实验室特征,以提示临床医生在本病的诊断过程中对相关驱动基因突变进行更为精确的检测。方法2022年2月17日收集临沂市中心医院原发性血小板增多症病人骨髓液送检济南金域医学检验中心,采用二代测序技术检测本例ET病人的JAK2、CALR和MPL基因突变,并结合文献分析JAK2、CALR、MPL 3个驱动基因突变均表达的临床及实验室特征。结果病人检测到JAK2、CALR及MPL 3个驱动基因突变阳性,表现为血小板增高、红细胞计数和血红蛋白正常。结论为了进一步提高对ET乃至骨髓增殖性肿瘤的认识,需要在诊断过程中尽可能使用更为精确的二代测序对其基因突变进行检测。

关键词：血小板增多,原发性基因突变 JAK2 CALR MPL 骨髓增殖性肿瘤

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Low-temperature alteration of oceanic island basalts and their contribution to transition metal circulation of the ocean

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Acta Oceanologica Sinica 2008年第2期27卷 35-54页

作者： BU Wenrui shi Xuefa PENG Jiantang LIU Jihua zhang Mingjie QI Liang Key Laboratory of Marine Sedimentology ＆ Environmental Geology First Institute of Oceanography State Oceanic Administration Qingdao 266061 China Institute of Geochemistry Chinese Academy of Sciences Guiyang 550002 China College of Earth and Environmental Science Lanzhou University Lanzhou 730000 China

The major elements, rare earth elements （REE） and trace elements of four basalt samples from central and western Pacific ferro- manganese crust provinces have been analyzed using chemical methods and ICP - MS, respectively. The results indicate that the samples have been extensively altered and that the contents of their major elements have changed significantly. However, the similarity of REE partition patterns and trace element contents of basalt samples to those of fresh oceanic island basalts （OIB） indicate that the basalt samples originated as OIB. Because of low-temperature alteration, the contents of A1203 , Fe203 , MnO, K20 and P205 increased, while MgO and FeO decreased. Active components, such as magnesium and iron, were leached from OIB resulting in the relative enrichment of SiO2. The leaching of active components can cause the relative enrichment of REE, while the precipitation of LREE-rich ferromanganese oxides in vesicles and fissures not only causes an increase of REE contents, but also induces ＂fractionation＂ of LREE and HREE. Based on the enrichment mechanism of REE contents, the theoretical quantities of precipitated ferromanganese oxides and the depleted quantities of active components are calculated ： the depleted quantities of active components for the unit mass of fresh basalts vary in the range of 0.15 ～ 0. 657, and the precipitated quantities of ferromanganese oxides for the unit mass of fresh basahs vary in the range of 0. 006 ～ 0. 042. Of the major elements, the two most depleted are iron, and magnesium, with 18.28% ～ 70.95% of iron and 44.50% ～ 93.94% of magnesium in the fresh basalts was leached out. Theoretical calculation and geochemistry results both indicate that low-temperature alteration of basalts can supply abundant amount of metals to seawater, and may play an important role in ocean metal circulation.

关键词： oceanic island basahs ( OIB) low-temperature alteration ocean metal circulation theoretical calculation cobaltrich ferromanganese crusts

Amperometric Biosensor for Detection of Phenolic Compounds Based on Tyrosinase, N-AcetyI-L-cysteinecapped Gold Nanoparticles and Chitosan Nanocomposite

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Chinese Journal of Chemistry 2017年第8期35卷 1305-1310页

作者： Wenjuan Dong Jiyan Han Jia shi Wenting Liang Yuexia zhang Chuan Dong Institution of Environmental Science College of Chemistry and Chemical Engineering Shanxi University Taiyuan Shanxi 030006 China Department of Laboratory Medicine College of Fenyang Shanxi Medical University Fenyang Shanxi 032200 China

A novel biosensor was fabricated based on the immobilization of tyrosinase and N-acetyl-L-cysteine-capped gold nanoparticles onto the surface of the glassy carbon electrode via the film forming by chitosan. The NAC-AuNPs （N-acetyl-L-cysteine-capped gold nanoparticles） with the average size of 3.4 nm had much higher specific surface area and good biocompatibility, which were favorable for increasing the immobilization amount of enzyme, retaining the catalytic activity of enzyme and facilitating the fast electron transfer. The prepared biosensor exhibited suitable amperometric responses at -0.2 V for phenolic compounds vs. saturated calomel electrode. The parameters of influencing on the working electrode such as pH, temperature, working potential were investigated. Under optimum conditions, the biosensor was applied to detect catechol with a linear range of 1.0 ×10^-7 to 6.0 × 10^-5 mol·L^-1 , and the detection limit of 5.0×10^-8mol·L^-1 （S/N=3）. The stability and selectivity of the proposed biosensor were also evaluated.

关键词： tyrosinase biosensor gold nanoparticles phenolic compounds

Evolution of drought and flood events on the Qinghai-Tibet Plateau and key issues for response

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Science China Earth Sciences 2023年第11期66卷 2514-2529页

作者： jie LU Shu XU Tianling QIN Xin HE Denghua YAN Cheng zhang Sintayehu A.ABEBE State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin China Institute of Water Resources and Hydropower ResearchBeijing 100038China Yinshanbeilu National Field Research Station of Steppe Eco-hydrological System China Institute of Water Resources and Hydropower ResearchHohhot 010020China Hydraulic and Water Resources Engineering Department Debre Markos University Institute of TechnologyDebre Markos 999047Ethiopia

The Qinghai-Tibet Plateau is a climate-sensitive *** characteristics of drought and flood events in this region are significantly different as compared to other areas in the country,which could potentially induce a series of water security,ecological and environmental *** is urgent that innovative theories and methods for estimation of drought and flood disasters as well as their adaptive regulations are *** on extensive literature review,this paper identifies new situations of the evolution of drought and flood events on the Qinghai-Tibet Plateau,and analyzes the research progress in terms of monitoring and simulation,forecasting and early warning,risk prevention and emergency *** study found that there were problems such as insufficient integration of multi-source data,low accuracy of forecasting and early warning,unclear driving mechanisms of drought and flood disaster chains,and lack of targeted risk prevention and regulation *** this basis,future research priorities are proposed,and the possible research and development paths are elaborated,including the evolution law of drought and flood on the Qinghai-Tibet Plateau,the coincidence characteristics of drought and flood from the perspective of a water resources system,prediction and early warning of drought and flood coupled with numerical simulation and knowledge mining,identification of risk blocking points of drought and flood disaster chain and the adaptive ***,the paper will provide technical support for preventing flood and drought disasters,water resources protection,ecological restoration and climate change adaptation on the Qinghai-Tibet Plateau.

关键词： Drought and flood evolution Monitoring and simulation Prediction and early warning Risk prevention and emergency response Qinghai-Tibet Plateau

Mechanism of ball milled activated carbon in improving the desalination performance of flow-and fixed-electrode in capacitive deionization desalination

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Frontiers of Environmental Science & Engineering 2023年第5期17卷 145-154页

作者： Ge Shen Junjun Ma Jianrui Niu Ruina zhang Jing zhang Xiaoju Wang jie Liu Jiarong Gu Ruicheng Chen Xiqing Li Chun Liu College of Environmental Science and Engineering Hebei University of Science and TechnologyShijiazhuang 050018China Pollution Prevention Biotechnology Laboratory of Hebei Province Shijiazhuang 050018China

Capacitive deionization(CDI)is a novel electrochemical water-treatment *** electrode material is an important factor in determining the ion separation *** carbon(AC)is extensively used as an electrode material;however,there are still many deficiencies in commercial *** adopted a simple processing method,ball milling,to produce ball milled AC(BAC)to improve the physical and electrochemical properties of the original AC and desalination *** BAC was characterized in detail and used for membrane capacitive deionization(MCDI)and flow-electrode capacitive deionization(FCDI)electrode *** ball milling,the BAC obtained excellent pore structures and favorable surfaces for ion adsorption,which reduced electron transfer resistance and ion migration resistance in the *** optimal ball-milling time was 10 ***,the improved effects of BAC as fixed electrodes and flow electrodes are different and the related mechanisms are discussed in *** average salt adsorption rates(ASAR)of FCDI and MCDI were improved by 134%and 17%,respectively,and the energy-normalized removal salt(ENRS)were enhanced by 21%and 53%,*** believe that simple,low-cost,and environmentally friendly BAC has great potential for practical engineering applications of FCDI and MCDI.

关键词： Ball-milling Capacitive deionization Fixed electrode Flow electrode

Hyperpolarizabilities of alkaline-earth metal ions Be^+, Mg^+, and Ca^+

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Science China(Physics,Mechanics & Astronomy) 2016年第9期59卷 33-38页

作者： Dong Yin Yong-Hui zhang Cheng-Bin Li Ke-Lin Gao Ting-Yun shi State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics Wuhan Institute of Physics and Mathematics Chinese Academy of SciencesWuhan 430071China Graduate University of the Chinese Academy of Sciences Beijing 100049China Department of Physics Henan Normal UniversityXinxiang 453007China Key Laboratory of Atomic Frequency Standards Wuhan Institute of Physics and MathematicsChinese Academy of SciencesWuhan 430071China

The knowledge of the hyperpolarizabilities of atoms and ions is helpful for the analysis of the high order effects of the frequency shifts in precision spectroscopy experiments. Liu et al. [Phys. Rev. Lett. 114, 223001 （2015）] proposed to establish all-optical trapped ion clocks using laser at the magic wavelength for clock transition. To evaluate the high-order frequency shifts in this new scheme of optical clocks, hyperpolarizabilities are needed, but absent. Using the finite field method based on the B-spline basis set and model potentials, we calculated the electric-field-dependent energy shifts of the ground and low-lying excited states in Be＋, Mg＋, and Ca＋ in the field strength range of 0.0-6×10-5 a.u.. The scalar and tensor polarizabilities （α0, α2） and hyperpolarizabilities （Y0,Y2, 74） were deduced. The results of the hyperpolarizabilities for Be＋ showed good agreement with the values in literature, implying that the present method can be applied for the effective estimation of the atomic hyperpolarizabilities, which are rarely reported but needed in experiments. The feasibility of optical trapping of Ca＋ is discussed, and the contributions of hyperpolarizabilities to the transition frequency shift for Ca＋ in the optical dipole trap are estimated using quasi-electrostatic approximation.

关键词： hyperpolarizability alkaline-earth metal ion finite field method

Synergistic effect of polyoxometalate solution and TiO_2 under UV irradiation to catalyze formic acid degradation and their application in the fuel cell and hydrogen evolution

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Green Energy & Environment 2017年第4期2卷 436-441页

作者： Congmin Liu Zhe zhang Wei Liu Xu Du shi Liu Yong Cui Guodian New Energy Technology Research Institute School of Chemical & Biomolecular Engineering and RBI at Georgia Tech Georgia Institute of Technology Key Laboratory of Nuclear Materials and Safety Assessment Division of Materials for Special Environments Institute of Metal Research Chinese Academy of Sciences

The synergistic effect of H_3PMo_(12)O_(40) or H_3PW_(12)O_(40) polyoxometalate solution(POM) and TiO_2 to catalyze formic acid oxidation was investigated. Under UV irradiation, hole and electron were photogenerated by TiO_2. Formic acid was oxided by the photogenerated hole and photogenerated electron was transferred to reduce polyoxometalate. With this design, formic acid can be converted into electricity in the fuel cell and hydrogen can be generated in the electrolysis cell without noble metal catalyst. Unlike other noble metal catalysts applied in the fuel cells and electrolysis cell, POM and TiO_2 are stable and low cost. The maximum output power density of liquid formic acid fuel cell after 12 h UV irradiation is 5.21 mW/cm^2 for phosphmolybdic acid and 22.81 m W/cm^2 for phosphotungstic acid respectively. The applied potential for the hydrogen evolution is as low as 0.8 V for phosphmolybdic acid and 0.6 V for phosphotungstic acid.

关键词： TiO2 UV Polyoxometalate solution(POM) Fuel cell Hydrogen evolution

Coverage Dependence of Growth Mode in Heteroepitaxy of Ni on Cu(100) Surface

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Communications in Theoretical Physics 2008年第7期50卷 231-236页

作者： WU Feng-Min LU Hang-Jun FANG Yun-zhang HUANG shi-Hua Institute of Condensed Matter Physics Zhejiang Normal University Jinhua 321004 China

A realistic kinetic Monte Carlo （KMC） simulation model with physical parameters is developed, which well reproduces the heteroepitaxial growth of multilayered Ni thin film on Cu（100） surfaces at room temperature. The effects of mass transport between interlayers and edge diffusion of atoms along the islands are included in the simulation model, and the surface roughness and the layer distribution versus total coverage are calculated. Speeially, the simulation model reveals the transition of growth mode with coverage and the difference between the Ni heteroepitaxy on Cu（100） and the Ni homoepitaxy on Ni（100）. Through comparison of KMC simulation with the real scanning tunneling microscopy （STM） experiments, the Ehrlich-Schwoebel （ES） barrier Ees is estimated to be 0.18±0.02 eV for Ni/Cu（100） system while 0.28 eV for Ni/Ni（100）. The simulation also shows that the growth mode depends strongly on the thickness of thin film and the surface temperature, and the critical thickness of growth mode transition is dependent on the growth condition such as surface temperature and deposition flux as well.

关键词： heteroepitary growth mode ES barrier kinetic Monte Carlo simulation

Targeted Antagonism of Vascular Endothelial Growth Factor Reduces Mortality of Mice with Acute Respiratory Distress Syndrome

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Current Medical Science 2020年第4期40卷 671-676页

作者： Zhao zhang Dong-shi LU Dan-qing zhang Xin WANG Yu MING Zhou-yang WU Department of Anesthesiology Union HospitalTongji Medical CollegeHuazhong Universiry of Science and TechnologyWuhan 430022.China Department of Senior Cadre No.989 HospitalThe Joint Logistics Support Force of the Chinese People's Liberation ArmyLuoyang 471003China College of Health Science and Nursing Withan Polytechnic UniversityWiuhan 430032China

Summary:Acute respiratory distress syndrome(ARDS)is associated with a mortality of 45%.Our previous rescarch indicated that anti-vascular endothelial growth factor(VEGF)could maintain the normal structure and function of the respiratory ***,systemic application of VEGF antagonists would lead to animal *** study attempts to study the targeted drug delivery for *** this study,we used soluble fims-like tyrosine kinase-1(sFlt)-targeted ultrasound microbubbles to antagonize the effect of VEGF on lung *** male BALB/C mice were randomly assigned to 6 groups:phosphate buffer saline(PBS)group(PBS+PBS);blank group(PBS+empty microbubbles);lipopolysaccharide(LPS)group(LPS+PBS);ARDS group(LPS tempty microbubbles);control group(PBS+sFlt microbubbles);and treatment group(LPS+sFIt microbubbles).After administration of LPS or PBS in the corresponding groups,the sFlt-targeted microbubbles or empty microbubbles were injected into the blood *** the lungs were irradiated with ultrasound,which ruptured the drug-loaded microbubbles and helped release drugs to the lung tissues *** lung injury score,lung wet/dry ratio(W/D),liver and kidney functions,and the mortality of the mice in all groups were investigated at the predetermined time *** difference in mortality between groups was examined by Fisher *** data were analyzed by onc-way analysis of variance(ANOVA).A value of P<0.05 indicates that the difference was *** results showed that the PaO2 levels were normal in the PBS group,the blank group,and the control *** LPS group and ARDS group showed significant ***2 was improved significantly in the treatment *** lung injury score and W/D were normal in the PBS group,the blank group,and the control *** lung injury score and W/D increased significantly in the LPS group and ARDS group and decreased in the treatment group(P<0.05).The mortality rate of the ARDS model was 60%(95%confidence inte

关键词： acute respiratory distress syndrome vascular endothelial growth factor soluble fims-like tyrosine kinase-1 ultrasound microbubble lipopolysaccharide