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加强综合医院重点课题管理促进医院科研发展

中华医学科研管理杂志 2016年第6期29卷 472-476页

作者：冯宝华秦鹏张鹏俊苗苗于玲玲许扬彭渝轩北京医院科研处 100730 北京医院保健医疗部 100730 首都医科大学卫生管理与教育学院北京医院人事处

目的医院近年省部级课题中标数及获得经费数呈现下降态势,通过对某三级甲等综合医院近十年中标省部级课题进行分析,探讨省部级课题分布情况、学科交叉情况,以及课题负责人的具体情况及存在的问题,为医院科研管理部门制定管理策略提供参... 详细信息

目的医院近年省部级课题中标数及获得经费数呈现下降态势,通过对某三级甲等综合医院近十年中标省部级课题进行分析,探讨省部级课题分布情况、学科交叉情况,以及课题负责人的具体情况及存在的问题,为医院科研管理部门制定管理策略提供参考.方法利用医院科研管理信息系统软件,采集2005-2014年医院科研人员承担省部级课题的经费、类型、学科分布等相关科研数据,通过SPSS软件对课题分布情况、课题学科交叉情况及课题负责人年龄结构、学位、职称分布等因素进行分析研究.结果医院近十年中标省部级课题数量及经费数额呈现不稳定态势,基础部门获得课题数量[57（28.64％）]低于临床科室[140（70.35％）],重点科室承担课题数量相对较多[63（31.66％）];学科融合情况尚待加强;中青年科技人才是医院科研队伍的中坚力量[166（83.41％）],高学位[博士109人（54.77％）,课题经费数额为2 046.60万元,占总经费数的65.89％]、高职称人才[134人（67.34％）为正高级职称,获得课题经费数额为2 709.79万元（87.24％）]是中标课题的主力军.结论医院应针对课题分布趋势,有的放矢采取策略;根据课题科室分布趋势,加强科室间合作,促进学科融合;加强人才梯队建设,重视青年科技人才培养;加强科研管理,为省部级课题管理提供服务.

关键词：综合医院科研课题科研管理

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Co-doped cryptomelane-type manganese oxide in situ grown on a nickel foam substrate for high humidity ozone decomposition

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Journal of Environmental Sciences 2025年第2期148卷 529-540页

作者： Haoyuan Liang xu Wang Hui Wang Zhenping Qu Key Laboratory of Industrial Ecology and Environmental Engineering School of Environmental Science and TechnologyDalian University of TechnologyDalian 116024China

Monolithic catalysts with excellent O_(3)catalytic decomposition performance were prepared by in situ loading of Co-doped KMn_(8)O_(16)on the surface of nickel *** triple-layer structure with Co-doped KMn_(8)O_(16)/Ni6MnO_(8)/Ni foam was grown spontaneously on the surface of nickel foam by tuning the molar ratio of KMnO_(4)to Co(NO_(3))_(2)·6H_(2)O ***,the formed Ni6MnO_(8)structure between KMn_(8)O_(16)and nickel foam during in situ synthesis process effectively protected nickel foam from further etching,which significantly enhanced the reaction stability of *** optimum amount of Co doping in KMn_(8)O_(16)was available when the molar ratio of Mn to Co species in the precursor solution was 2:*** the Mn2Co1 catalyst had abundant oxygen vacancies and excellent hydrophobicity,thus creating outstanding O_(3)decomposition *** O_(3)conversion under dry conditions and relative humidity of 65%,90%over a period of 5 hr was 100%,94%and 80%with the space velocity of 28,000 hr^(−1),*** in situ constructed Co-doped KMn_(8)O_(16)/Ni foam catalyst showed the advantages of low price and gradual applicability of the preparation process,which provided an opportunity for the design of monolithic catalyst for O_(3)catalytic decomposition.

关键词： Co-doped cryptomelane-type manganese O3 decomposition High humidity Nickel foam Monolithic catalyst

Interaction potential and thermo-correction to the equation of state for thermally stable Schwarzschild anti-de Sitter black holes

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Science China(Physics,Mechanics & Astronomy) 2019年第1期62卷 27-31页

作者： Yan-Gang miao Zhen-Ming xu School of Physics Nankai University

The microscopic structure of black holes remains a challenging subject. In this paper, based on the well-accepted fact that black holes can be mapped to thermodynamic systems, we make a preliminary exploration of the microscopic structure of the thermodynamically stable Schwarzschild anti-de-Sitter(SAdS) black hole. In accordance with the number density and thermodynamic scalar curvature, we give the interaction potential among the molecules of thermodynamically stable SAdS black holes and analyze its effectiveness. Moreover, we derive the thermo-correction to the equation of state for such black holes that arises from interactions among black-hole molecules using virial coefficients.

关键词： molecular potential number density equation of state

Evaluating the affecting factors of glacier mass balance in Tanggula Mountains using explainable machine learning and the open global glacier model

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Journal of Mountain Science 2025年第2期22卷 466-488页

作者： xu Qiangqiang KANG Shichang HE Xiaobo xu Min Key Laboratory of Cryospheric Science and Frozen Soil Engineering Northwest Institute of Eco-Environment and ResourcesChinese Academy of SciencesLanzhou 730000China Tanggula Mountain Cryosphere and Environment Observation and Research Station of Tibet Autonomous Region Lanzhou 730000China University of Chinese Academy of Sciences Beijing 100049China

Glacier mass balance is a key indicator of glacier health and climate change *** factors include both climatic and nonclimatic elements,forming a complex set of *** is a lack of quantitative analysis of these composite factors,particularly in climate-typical regions like the Tanggula Mountains on the central Tibetan *** collected data on various factors affecting glacier mass balance from 2000 to 2020,including climate variables,topographic variables,geometric parameters,and glacier *** utilized linear regression models,ensemble learning models,and Open Global Glacier Model(OGGM)to analyze glacier mass balance changes in the Tanggula *** indicate that linear models explain 58%of the variance in glacier mass balance,with seasonal temperature and precipitation having significant *** findings show that ensemble learning models made the explanations 5.2%more accurate by including the impact of topographic and geometric factors such as the average glacier height,the slope of the glacier tongue,the speed of the ice flow,and the area of the *** machine learning identified the spatial distribution of positive and negative impacts of these characteristics and the interaction between glacier topography and ice ***,we predicted the responses of glaciers of different sizes to future climate change based on the results of interpretable machine *** was found that relatively large glaciers(>1 km~2)are likely to persist until the end of this century under low emission scenarios,whereas small glaciers(<1 km~2)are expected to nearly disappear by 2080 under any emission *** research provides technical support for improving glacier change modeling and protection on the Tibetan Plateau.

关键词： Glacier mass balance Tanggula Mountains Explainable Machine Learning Open Global Glacier Model Climate change

Profiles,exposure assessment and expanded screening of PAHs and their derivatives in one petroleum refinery facility of China

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Journal of Environmental Sciences 2025年第1期147卷 550-560页

作者： Ning Wang Fengjiao Jiang Lin xu Yaqi Cai School of Municipal and Environmental Engineering Shandong Jianzhu UniversityJinan 250101China Resource and Environmental Innovation Institute Shandong Jianzhu UniversityJinan 250101China State Key Laboratory of Environmental Chemistry and Ecotoxicology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China School of Environment Hangzhou Institute for Advanced StudyUCASHangzhou 330106China Hubei Key Laboratory of Environmental and Health Effects of Persistence Toxic Substances Institute of Environment and HealthJianghan UniversityWuhan 430056China

This study investigated environmental distribution and human exposure of polycyclic aromatic hydrocarbons(PAHs)and their derivatives in one Chinese petroleum refinery *** was found that,following with high concentrations of 16 EPA PAHs(∑Parent-PAHs)in smelting subarea of studied petroleum refinery facility,total derivatives of PAHs[named as XPAHs,including nitro PAHs(NPAHs),chlorinated PAHs(Cl-PAHs),and brominated PAHs(Br-PAHs)]in gas(mean=1.57×10^(4)ng/m^(3)),total suspended particulate(TSP)(mean=4.33×10^(3) ng/m^(3))and soil(mean=4.37×10^(3) ng/g)in this subarea had 1.76-6.19 times higher levels than those from other subareas of this facility,surrounding residential areas and reference areas,indicating that petroleum refining processes would lead apparent derivation of ***,compared with those in residential and reference areas,gas samples in the petrochemical areas had higher∑NPAH/∑PAHs(mean=2.18),but lower∑Cl-PAH/∑PAHs(mean=1.43×10^(-1))and∑Br-PAH/∑PAHs ratios(mean=7.49×10^(-2)),indicating the richer nitrification of PAHs than chlorination during petrochemical *** occupational exposure to PAHs and XPAHs in this petroleum refinery facility were 24-343 times higher than non-occupational exposure,and the ILCR(1.04×10^(-4))for petrochemical workers was considered to be potential high ***,one expanded high-resolution screening through GC Orbitrap/MS was performed for soils from petrochemical area,and another 35 PAHs were found,including alkyl-PAHs,phenyl-PAHs and other species,indicat-ing that profiles and risks of PAHs analogs in petrochemical areas deserve further expanded investigation.

关键词： Polycyclic aromatic hydrocarbons(PAHs) Derivatives Petroleum refinery Human exposure Non-targeted screening

A simple construction of CRT-based ideal secret sharing scheme and its security extension based on common factor

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Frontiers of Computer Science 2022年第1期16卷 155-163页

作者： Lei WU Fuyou miao Keju MENG xu WANG School of Computer Science and Technology University of Science and Technology of ChinaHefei230026China

Secret sharing(SS)is part of the essential techniques in cryptography but still faces many challenges in efficiency and ***,SS schemes based on the Chinese Remainder Theorem(CRT)are either low in the information rate or complicated in *** solve the above problems,1)a simple construction of an ideal(t,n)-SS scheme is proposed based on CRT for a polynomial *** with Ning’s scheme,it is much more efficient in generating n pairwise coprime modular polynomials during the scheme construction ***,Shamir’s scheme is also a special case of our *** further improve the security,2)a common-factor-based(t,n)-SS scheme is proposed in which all shareholders share a common polynomial *** enables both the verification of received shares and the establishment of a secure channel among shareholders during the reconstruction *** a result,the scheme is resistant to eavesdropping and modification attacks by outside adversaries.

关键词： ideal secret sharing Chinese remainder theorem coprime polynomial generation common factor

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Construction of attapulgite-based one-dimensional nanonetwork composites with corrosion resistance for high-efficiency microwave absorption

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International Journal of Minerals,Metallurgy and Materials 2025年第3期32卷 689-698页

作者： Kai xu Qingqing Gao Shaoqi Shi Pei Liu Yinxu Ni Zhilei Hao Gaojie xu Yan Fu Fenghua Liu School of Materials Science and Chemical Engineering Ningbo UniversityNingbo 315211China Zhejiang Key Laboratory of Additive Manufacturing Materials Ningbo Institute of Materials Technology&EngineeringChinese Academy of SciencesNingbo 315201China Northwest Yongxin Coatings Limited Company Lanzhou 730046China

Exploring high-efficiency and broadband microwave absorption(MA)materials with corrosion resistance and low cost is ur-gently needed for wide practical ***,the natural porous attapulgite(ATP)nanorods embedded with TiO_(2)and polyaniline(PANI)nanoparticles are synthesized via heterogeneous precipitation and in-situ *** obtained PANI-TiO_(2)-ATP one-di-mensional(1D)nanostructures can intertwine into three-dimensional(3D)conductive network,which favors energy *** min-imum reflection loss(RL_(min))of the PANI-TiO_(2)-ATP coating(20wt%)reaches-49.36 dB at 9.53 GHz,and the effective absorption band-width(EAB)can reach 6.53 GHz with a thickness of 2.1 *** excellent MA properties are attributed to interfacial polarization,mul-tiple loss mechanisms,and good impedance matching induced by the synergistic effect of PANI-TiO_(2)nanoparticle shells and ATP *** addition,salt spray and Tafel polarization curve tests reveal that the PANI-TiO_(2)-ATP coating shows outstanding corrosion resist-ance *** study provides a low-cost and high-efficiency strategy for constructing 1D nanonetwork composites for MA and corrosion resistance applications using natural porous ATP nanorods as carriers.

关键词： microwave absorption corrosion resistance attapulgite TiO_(2) polyaniline

Continuous water-water hydrogen bonding network across the rim of carbon nanotubes facilitating water transport for desalination

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Nano Research 2021年第7期14卷 2171-2178页

作者： Yaqi Hou miao Wang Xinyu Chen xu Hou State Key Laboratory of Physical Chemistry of Solid Surfaces College of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005China College of Materials Xiamen UniversityXiamen 361005China Research Institute for Biomimetics and Soft Matter Fujian Provincial Key Laboratory for Soft Functional Materials ResearchJiujiang Research InstituteCollege of Physical Science and TechnologyXiamen UniversityXiamen 361005China Collaborative Innovation Center of Chemistry for Energy Materials Xiamen UniversityXiamen 361005China Tan Kah Kee Innovation Laboratory Xiamen 361102China CAS Key Laboratory of Bio-inspired Materials and Interfacial Sciences Technical Institute of Physics and ChemistryChinese Academy of SciencesBeijing 100190China

The development of membranes featuring carbon nanotubes(CNTs)have provided possibilities of next-generation solar desalination *** solar desalination,the microstructures and interactions between the filter membrane and seawater play a crucial role in desalination *** the mechanisms of water evaporation and ion rejection in confined pores or channels is necessary to optimize the desalting ***,using non-equilibrium molecular dynamics simulations,we found that continuous water-water hydrogen bonding network across the rims of CNTs is the key factor in facilitating water transport through *** the continuous hydrogen bonding network,the water flux is two times of that without the continuous hydrogen bonding *** CNT arrays,each CNT transports water molecules and rejects salt ions *** on these observations,using CNT arrays consisted with densely packed thin CNTs is the most advisable strategy for evaporation desalination,possessing high transport flux as well as maintaining high salt rejection.

关键词： carbon nanotubes hydrogen bonding network facilitated water transport salt rejection desalination

CFD-PBM simulation of bubble coalescence and breakup in top blown-rotary agitated reactor

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Journal of Iron and Steel Research International 2022年第2期29卷 223-236页

作者： Pin Shao Shi-xu Liu Xin-cheng miao School of Materials and Metallurgy University of Science and Technology LiaoningAnshan114051LiaoningChina

Gas–liquid flow and bubble coalescence and breakup behavior were studied in a top blown-rotary agitated reactor for *** important models of bubble coalescence and breakup mechanisms were considered and compared,and water model experiment was carried out to verify and optimize the mathematical *** influence of different operating parameters including paddle arrangement,stirring speed and top blowing flow rate on the bubble size and distribution was *** results show that the predicted bubble size and distribution present a good agreement with the experimental results using the improved Luo–Laakkonen combination *** the position of the stirring paddle moves from the center to the side wall,the bubble distribution in the reactor becomes more uniform,and the bubble size gradually *** the increase in the paddle rotation speed,the bubble size ***,this effect begins to weaken when the paddle rotation speed exceeds 150 r/*** the top blowing flow rate will increase the bubble size in the reactor,but it has a weak effect on bubble *** the top blowing rate exceeds 2.0 m^(3)/h,the bubble size in the bath is basically not less than 5 mm.

关键词： Top blown-rotary agitated reactor Bubble coalescence Bubble breakup Bubble size CFD-PBM Numerical simulation