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An Electricity Demand-Based Planning of Electric Vehicle Charging Infrastructure

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Wuhan University Journal of Natural Sciences 2017年第5期22卷 449-454页

作者： DAI Yongxia liu min Hangzhou Power Supply Company of State Grid Hangzhou310012ZhejiangChina

The construction of charging infrastructure is an important prerequisite for the development of electric vehicles （EVs）. In this paper, the classification of charging vehicle models and charging infrastructure was firstly summarized, and the optimal charging mode of each type of EV model and the total electicity demand of charging were then analyzed. Combined with the general principle of the development and application of new energy vehicles in the city H, the model of electric vehicle charging infrastructure planning was designed. The case we proposed fully proved the effectiveness of the model.

关键词： electric vehicles (EVs) charging infrastructure charging demand charging station planning

Dependence of Estimating Whitecap Coverage on Currents and Swells

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Journal of Ocean University of China 2021年第3期20卷 512-520页

作者： liu min YANG Bailin JIA Nan ZOU Zhongshui Ocean College Hebei Agriculture UniversityQinhuangdao 066000China School of Resources and Materials Northeastern University at QinhuangdaoQinhuangdao 066004China PLA Information Engineering University Zhengzhou 450001China School of Marine Science Sun Yat-Sen UniversityZhuhai 519082China

The shipboard measurements of whitecap coverage(W)and the meteorological and oceanographic information from two cruises in the South China Sea and Western Pacific are explored for estimating *** study aims at evaluating how to im-prove the parameterizations of W while considering the effects of currents and swells on wave *** indeed affect W in a way that winds with following currents can decrease W,whereas winds with opposing currents can increase ***,10-m wind speed over sea surface(U_(10))is calibrated by subtracting the current velocity from U_(10) when the propagating directions of winds and currents are *** contrast,when the direction is opposite,U_(10) is calibrated by adding the parallel velocity com-ponent of the opposing current to U_(10).The power fits of W dependence on the U_(10)-related parameters of U_(10),friction velocity,wind sea Reynolds number in terms of this calibrated-U_(10) obtain better results than those directly fitted to U_(10).Different from the effect of currents on W,wind blowing along the crest line of swells may contribute to the increase in *** conclusions suggest that U_(10) should be calibrated first before parameterizing W in areas with a strong current or some swell-dominant areas.

关键词： whitecap coverage currents friction velocity wind sea Reynolds number swells

The application of three-dimensional hydroelastic analysis of ship structures in Pekeris hydro-acoustic waveguide environment

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Acta Mechanica Sinica 2014年第1期30卷 59-66页

作者： ming-Song Zou You-Sheng Wu Yan-min liu China Ship Scientific Research Center

The hydroelastic analysis and sonoelastic analysis methods are incorporated with the Green＇s function of the Pekeris ocean hydro-acoustic waveguide model to produce a three-dimensional sonoelastic analysis method for ships in the ocean hydro-acoustic environment. The seabed condition is represented by a penetrable boundary of prescribed density and sound speed. This method is employed in this paper to predict the vibration and acoustic radiation of a 1 500 t Small Water Area Twin Hull （SWATH） ship in shallow sea acoustic environment. The wet resonant frequencies and radiation sound source levels are predicted and compared with the measured results of the ship in trial.

关键词： Hydroelasticity Sonoelasticity Acousticwaves Shallow sea Free surface effect Seabed effect -SWATH ship

Extraction behaviours of titanium and other impurities in the decomposition process of ilmenite by highly concentrated KOH solution

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International Journal of minerals,Metallurgy and Materials 2012年第1期19卷 9-14页

作者： Yu-min liu Hua Lv Tao Qi Yi Zhang College of Chemistry and Environmental Science Henan Normal University Xinxiang 453007 China Institute of Process Engineering Chinese Academy of Sciences Beijing 100080 China

To effectively utilize ilmenite and recycle KOH solution, the extraction behaviours of titanium and other associated impurities in the decomposition process of ilmenite by highly concentrated KOH solution were studied. Experiments on the extraction behaviours of tita- nium as well as other associated impurities of ilmenite such as iron, silicon, calcium, and aluminium were carried out. The effects of various parameters, including reaction temperature, KOH concentration, reaction time, alkali-to-ore mass ratio, and particle size on the extraction rate of titanium and other impurities were examined. When the finely ground ore （58-75 ~tm） reacted with KOH solution （80wt%） in an al- kali-to-ore mass ratio of 7：1 at 260~C for 60 min, almost complete extraction of titanium was achieved, while the extraction rate of aluminium was 78% and that of other impurities was less than 22%. Moreover, high purity （98.2wt%） TiO2 with the anatase structure could be gained in the purification process.

关键词： ilmenite titanium dioxide potassium hydroxide leaching

Comprehensive insights into the effects and regulatory mechanisms of immune cells expressing programmed death-1/programmed death ligand 1 in solid tumors

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Cancer Biology & Medicine 2020年第3期17卷 626-639页

作者： min liu Qian Sun Feng Wei Xiubao Ren Department of Immunology Tianjin Medical University Cancer Institute and HospitalNational Clinical Research Center for CancerKey Laboratory of Cancer Prevention and TherapyTianjinKey Laboratory of Cancer Immunology and BiotherapyTianjin's Clinical Research Center for CancerTianjin 300060China

The programmed cell death-1(PD-1)/programmed cell death ligand 1(PD-L1)signaling pathway is an important mechanism in tumor immune escape,and expression of PD-L1 on tumor cells has been reported more ***,accumulating evidence suggests that PD-1/PD-L1 is also widely expressed on immune cells,and that regulation is also critical for tumor immune *** this review,we emphasized that under solid tumor conditions,the immunoregulatory effects of immune cells expressing PD-1 or PD-L1,affected the prognoses of cancer ***,a better understanding of the mechanisms that regulate PD-1 or PD-L1 expression on immune cells would provide clear insights into the increased efficacy of anti-PD antibodies and the development of novel tumor immunotherapy strategies.

关键词： Immune cell immunotherapy programmed cell death ligand 1 programmed cell death-1 solid tumor

Ability of the radial basis function approach to extrapolate nuclear mass

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Communications in Theoretical Physics 2021年第9期73卷 79-85页

作者： Tao Li Haiwan Wei min liu Ning Wang Department of Physics Guangxi Normal UniversityGuilin541004China Guangxi Key Laboratory of Nuclear Physics and Technology Guilin541004China

The ability of the radial basis function(RBF)approach to extrapolate the masses of nuclei in neutron-rich and superheavy regions is investigated in combination with the Duflo-Zuker(DZ31),Hartree–Fock-Bogoliubov(HFB27),finite-range droplet model(FRDM12)and Weizsäcker-Skyrme(WS4)mass *** is found that when the RBF approach is employed with a simple linear basis function,different mass models have different performances in extrapolating nuclear masses in the same region,and a single mass model may have different performances when it is used to extrapolate nuclear masses in different *** WS4 and FRDM12 models(two macroscopic–microscopic mass models),combined with the RBF approach,may perform better when extrapolating the nuclear mass in the neutron-rich and superheavy regions.

关键词： extrapolation ability nuclear mass radial basis function root-mean-square deviation mass model

Saturation Number for Linear Forest 2P3∪tP2

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Wuhan University Journal of Natural Sciences 2019年第4期24卷 283-289页

作者： liu min HU Zhiquan College of Economics Northwest University of Political Science and Law Xi'an 710063 Shaanxi China School of Mathematics and Statistics Central China Normal University Wuhan 430079 Hubei China

For a fixed graph F,a graph G is F-saturated if it has no F as a subgraph,but does contain F after the addition of any new *** saturation number,sat(n,F),is the minimum number of edges of a graph in the set of all F-saturated graphs with order *** this paper,we determine the saturation number sat(n,2P3∪tP2)and characterize the extremal graphs for n≥6t+8.

关键词： saturation number saturated graph linear forest

Evaluation of COVID-19 outbreak prevention and control in Beijing using the emergency management theory

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Fundamental Research 2024年第3期4卷 671-677页

作者： Yu Wu Jue liu min liu School of Public Health Peking UniversityBeijing 100191China

On April 29,2020,China entered a normalization stage of prevention and *** December 2021,more than 40 outbreaks had occurred in China,which reflected the shortcomings of the pandemic prevention and control measures in China at that *** the capital city of China,Beijing faces more pressure in epidemic prevention and *** used the COVID-19 cluster containment evaluation indicators to determine the effects of prevention and control measures on four COVID-19 outbreaks in *** considering the specificity and operability of evaluation indicators and the availability of evaluation data,the evaluation system in our study consisted of six dimensions:epidemic prevention and control effect,discovery and detection ability,precision prevention and control capability,public protection effect,medical treatment and nosocomial infection prevention and control ability,and information release and public opinion response *** composite scores of the prevention and control effects of the Xinfadi,Shunyi,Daxing,and Ejina Banner–associated COVID-19 outbreaks in Beijing were 62,82,87,and 76,*** the six dimensions,the epidemic prevention and control effect,discovery and detection ability,precision prevention and control capability,and public protection effect scores for the Xinfadi outbreak were lower than those for the Shunyi,Daxing and Ejina Banner–associated *** medical treatment and nosocomial infection prevention and control ability scores for the outbreak associated with Ejina Banner were lower than those for the Xinfadi,Shunyi,and Daxing *** managing cluster outbreaks,Beijing was able to detect index cases early enough to reduce the scale and duration of the outbreak and consistently release official information to reduce public panic,standardize the management of centralized quarantine sites to prevent cross-infection,adhere to the“dynamic COVID‐zero”strategy to accurately prevent and control outbreaks,reduce the societa

关键词： Cluster outbreaks COVID-19 Prevention and control Evaluation Beijing

[0001]-Oriented InN Nanoleaves and Nanowires: Synthesis,Growth Mechanism and Optical Properties

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Acta Metallurgica Sinica(English Letters) 2016年第9期29卷 820-826页

作者： min liu Hui-Qiang liu Sheng Chu Ru-Fang Peng Shi-Jin Chu State Key Laboratory Cultivation Base for Nonmetal Composites and Functional Materials Southwest University of Science and Technology State Key Laboratory of Optoelectronic Materials and Technology Sun Yat-Sen University

Novel indium nitride （INN） leaf-like nanosheets and nanowires have been grown on Si substrate by chemical vapor deposition method. The characterization results indicate that the samples are single-crystalline, and the growth direction of the nanowires and nanoleaves is [0001]. The growth mechanism of the InN nanoleaves is following the pattern of vapor-liquid-solid process with a three-step growth process. In addition, the room temperature photoluminescence spectra of two nanostructures show band-to-band emissions around 0.706 eV, where the emission from single nanoleaf is stronger than nanowire, showing potential for applications in optoelectronic devices.

关键词： Novel indium nitride (INN) Chemical vapor deposition (CVD) Nanoleaf Crystal structure Photoluminescence (PL)