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中国卫生经济 2008年第5期27卷 12-15页

作者：谢长勇张鹭鹭杨鸿洋安伟孙博第二军医大学上海200433

通过对目前国内外卫生筹资状况的分析,依据复杂系统相关理论,界定国家卫生筹资系统概念边界。通过定性分析,建立起该系统的概念模型与逻辑模型,并探索该系统在实际运用中存在的问题,提出政策建议,为国家卫生筹资政策的制定提供理论依据。

关键词：卫生筹资系统概念模型逻辑模型

Depression mechanism of sulfite ions on sphalerite and Pb^(2+)activated sphalerite in the flotation separation of galena from sphalerite

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 335-345页

作者： Feng zhang Chenyang zhang Linlin Wu Wei Sun Hongliang zhang Jianhua Chen Yong Pei Songjiang Li Engineering Research Center of Ministry of Education for Carbon Emission Reduction in Metal Resource Exploitation and Utilization Hunan International Joint Research Center for Efficient and Clean Utilization of Critical Metal Mineral ResourcesSchool of Minerals Processing and BioengineeringCentral South UniversityChangsha 410083China State Key Laboratory of Mineral Processing Beijing General Research Institute of Mining&MetallurgyBeijing 100160China Hunan Provincial Key Laboratory of Micro&Nano Materials Interfaces Science College of Chemistry and Chemical EngineeringCentral South UniversityChangsha 410083China School of Resources Environment and MaterialsGuangxi UniversityNanning 530004China Department of Chemistry Xiangtan UniversityXiangtan 411105China China Railway Resource Group Co.Ltd Beijing 102300China

The depression mechanism of sulfite ions on sphalerite and Pb^(2+)activated sphalerite in the flotation separation of galena from sphalerite still lacked in-depth ***,the depression mechanism of sulfite ions on sphalerite and Pb^(2+)activated sphalerite in the flotation separation of galena from sphalerite was further systematically investigated with experiments and density functional theory(DFT)*** X-ray photoelectric spectroscopy(XPS)results,DFT calculation results,and frontier molecular orbital analysis indicated that sulfite ions were difficult to be adsorbed on sphalerite surface,suggesting that sulfite ions achieved depression effects on sphalerite through other non-adsorption ***,the oxygen content in the surface of sphalerite treated with sulfite ions in creased,which enhanced the hydrophilicity of the sphalerite and further increased the difference in hydrophilicity between sphalerite and ***,sulfite ions were chelated with lead ions to form PbSO_(3)in *** hydrophilic PbSO_(3)was more easily adsorbed on sphalerite than *** interaction between sulfite ions and lead ions could effectively inhibit the activation of *** addition the UV spectrum showed that after adding sulfite ions,the peak of perxanthate in the sphalerite treated xanthate solution was significantly stronger than that in the galena with xanthate solution,indicating that xanthate interacted more readily with sulfite ions and oxygen mo lecules within the sphalerite system,leading to the formation of ***,sulfite ions hardly depressed the flotation of ga lena and could promote the flotation of galena to some *** study deepened the understanding of the depression mechanism o sulfite ions on sphalerite and Pb^(2+)activated sphalerite.

关键词： sphalerite galena sulfite ion density functional theory depression mechanism

A novel simple bifunctional catalyst for the direct aldol reaction

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Chinese Chemical Letters 2011年第6期22卷 651-654页

作者： chang lu Liu Hao zhang Ning Wang ab School of Chemistry and Chemical Engineering Southwest UniversityChongqing 400715China Department of Chemistry Sichuan University of Arts and SciencesDazhou 635000China

Direct aldol reactions of aldehydes and ketones can proceed smoothly in the presence of a catalytic amount of naphthol/sodium naphtholate（5 mol%） to afford the corresponding products with yields up to 98%.Such a bif... 详细信息

关键词： Aldol reactions Naphthol Sodium naphtholate Bifunctional catalyst Acid-base

Geographical Information System-Based Assessment of Ecological Security in changbai Mountain Region

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Journal of Mountain Science 2014年第1期11卷 86-97页

作者： lu Xing-chang zhang Ji-quan LI Xiao-zhen School of Environment Northeast Normal University College of Geo-exploration Science & Technology Jilin University Anyang City Bureau of Agriculture

Ecological security defined as the creation of a condition where the physical surroundings of a community provide for the needs of its inhabitants without diminishing its natural stock,which is important for regional security and social *** recent years,land use patterns in the changbai Mountain region have changed significantly with intensive human activities,and consequently led to increasing problems in regional ecological *** on the Pressure-State-Impact-Response(PSIR) model and the mathematical method of catastrophe progression supported by geographical information system(GIS),the ecological security situation of the study area under land use and cover change(luCC) was *** results indicated that the ecological security in changbai Mountain region varied nonlinearly,which got better from 1990 to 2000 but became worse from 2000 to 2007,the ecological security levels in changbai Mountain region were mainly medium and medium to low during the past 17 years,with higher values of Ecological Security Index(ESI) in the central region and lower values in the east and west,the ecological security situation was more serious in the settlements and river valleys,where the luCC was most remarkable.

关键词： Ecological security Pressure-State-Impact-Response Land use and cover change Geographical Information System(GIS) Catastrophe progression changbai Mountain

ImSpiRE: image feature-aided spatial resolution enhancement method

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Science China Life Sciences 2025年第1期 272-283页

作者： Yuwei Hua Yizhi zhang Zhenming Guo Shan Bian Yong zhang State Key Laboratory of Cardiovascular Diseases and Medical Innovation Center Institute for Regenerative MedicineDepartment of NeurosurgeryShanghai East HospitalShanghai Key Laboratory of Signaling and Disease ResearchFrontier Science Center for Stem Cell ResearchSchool of Life Sciences and TechnologyTongji University

The resolution of most spatially resolved transcriptomic technologies usually cannot attain the single-cell level, limiting their applications in biological discoveries. Here, we introduce ImSpiRE, an image feature-aided spatial resolution enhancement method for in situ capturing spatial transcriptome. Taking the information stored in histological images, ImSpiRE solves an optimal transport problem to redistribute the expression profiles of spots to construct new transcriptional profiles with enhanced resolution, together with extending the gene expression profiles into unmeasured regions. Applications to multiple datasets confirm that ImSpiRE can enhance spatial resolution to the subspot level while contributing to the discovery of tissue domains, signaling communication patterns, and spatiotemporal characterization.

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Study on reduction of MoS_2 powders with activated carbon to produce Mo_2C under vacuum conditions

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International Journal of Minerals,Metallurgy and Materials 2018年第4期25卷 405-412页

作者： Guo-hua zhang He-qiang chang lu Wang Kuo-chih Chou State Key Laboratory of Advanced Metallurgy University of Science and Technology Beijing

A method of preparing Mo2C via vacuum carbothermic reduction of MoS2 in the temperature range of 1350–1550°C was proposed. The effects of MoS2-to-C molar ratio（a, a = 1：1, 1：1.5, and 1：2.5） and reaction temperature（1350 to 1550°C） on the reaction were studied in detail. The phase transition, morphological evolution, and residual sulfur content of the products were analyzed by X-ray diffraction, field-emission scanning electron microscopy, and carbon–sulfur analysis, respectively. The results showed that the complete decomposition of MoS2 under vacuum is difficult, whereas activated carbon can react with MoS2 under vacuum to generate Mo2C. Meanwhile, higher temperatures and the addition of more carbon accelerated the rate of carbothermic reduction reaction and further decreased the residual sulfur content. From the experimental results, the optimum molar ratio α was concluded to be 1：1.5.

关键词： vacuum treatment carbon thermoreduction molybdenum minerals molybdenum carbide microstructure

Toward a Direct Measurement of the Cosmic Acceleration:The Pilot Observation of HI 21 cm Absorption Line at FAST

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Research in Astronomy and Astrophysics 2024年第7期24卷 47-55页

作者： Jiangang Kang chang-Zhi lu Tong-Jie zhang Ming Zhu Institute for Frontiers in Astronomy and Astrophysics Beijing Normal UniversityBeijing 102206China School of Physics and Astronomy Beijing Normal UniversityBeijing 100875China National Astronomical Observatories Chinese Academy of SciencesBeijing 100101China

This study presents results on detecting neutral atomic hydrogen(H I)21 cm absorption in the spectrum of PKS PKS1413+13 at redshift z=*** observation was conducted by FAST,with a spectral resolution of10 Hz,using 10 minutes of observing *** global spectral profile is examined by modeling the absorption line using a single Gaussian function with a resolution of 10 kHz within a 2 MHz *** goal is to determine the rate of the latest cosmic acceleration by directly measuring the redshift evolution of the H I 21 cm absorption line with Hubble flow toward a common background quasar over a decade or longer time *** will serve as a detectable signal generated by the accelerated expansion of the Universe at redshift zlumn density in this DLA system is approximately equivalent to the initial observation value,considering uncertainties of the spin temperature of a spiral host *** high signal-to-noise ratio of 57,obtained at a 10 kHz resolution,strongly supports the feasibility of using the H I 21 cm absorption line in DLA systems to accurately measure the redshift drift rate at a precision level of around 10~(-10)per decade.

关键词： (cosmology)cosmological parameters-cosmology observations-cosmology theory-(cosmology)dark energy-radio lines ISM-radio lines galaxies-ISM clouds

Semitransparent Flexible Organic Solar Cells

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Chemical Research in Chinese Universities 2020年第3期36卷 343-350页

作者： WANG Yuhcng chang Yilin zhang Jianqi lu Guanghao WEI Zhixiang CAS Key Laboratory of Nanosystem and Hierarchical Fabrication CAS Center for Excellence in NanoscienceNational Center for Nanoscience and TechnologyBeijing 100190P.R.China Frontier Institute of Science and Technology Xi'an Jiaotong UniversityXi'an 710054P.R.China University of Chinese Academy of Sciences Beijing 100049P.R.China

The semitransparent flexible organic solar cell takes advantages of flexibility,transparency,color adjust ment property,which is more conducive to integrate on buidings and mobile *** to the developments of narrow band gap donors and the new non-fullerene acceptors,the power conversion efficiency of semitransparent flexible organic solar cells has been achieved 10% to 12% with average visible transmittance of 17% to 21%.This review summarizes the molecular design of the most representative layer materials,and discusses the characterization of semitransparent parameters paradigms,then we discuss how to optimize the device in combination with optical simulation,and finally list the recent development of semitransparent flexible electrodes of ITO-free organic solar cells,and give our perspectives on the next step direction.

关键词： Semitransparent Flexible Organic solar cell Electrode Optical simulation

Targeting Epac2 and GluA3-containing AMPARs:a novel therapeutic strategy for Alzheimer's disease

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Neural Regeneration Research 2025年第11期20卷 3223-3224页

作者： Tong zhang Martina Schmidt Department of Molecular Pharmacology Groningen Research Institute of PharmacyUniversity of GroningenGroningenThe Netherlands School of Pharmacy Tianjin Medical UniversityTianjinChina

Alzheimer's disease(AD)is a neurodegenerative disease that manifests progressive decline in memory and *** the early stage of AD,memory retrieval is impaired preceding memory acquisition and consolidation(Roy et al.,2016).Prior to the onset of symptoms,pathological amyloid-β(Aβ)plagues and tau protein tangles accumulate in extracellular and intracellular spaces,respectively,leading to *** these hallmark pathologies,Aβ is proposed to be the primary etiology by triggering a cascade of pathogenic events,including neuroinflammation,oxidative stress,tau hyperphosphorylation,synaptic/neuronal dysfunction,and neuronal death(zhang et al.,2023b).

关键词： Alzheimer impaired Aβ

Nitrogen-rich three-dimensional porous carbon mosaicked Na_(4)Ge_(9)O_(20)as anode material for high-performance lithium-ion batteries

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Rare Metals 2023年第2期42卷 438-448页

作者： Hao-Miao zhang Jing Chen Rou lu Cong-Ge lu Shuang Zhou Zhi chang An-Qiang Pan School of Materials Science and Engineering Central South UniversityChangsha410083China School of Physics and Materials Nanchang UniversityNanchang330031China

Germanium-based material has attracted numerous attentions and been regarded as a promising anode material for lithium-ion batteries due to its high theoretical ***,drastic pulverization and rapid capacity fading caused by large volume variation during cycling limit its practical *** this work,three-dimensional N-doped carbon framework-wrapped Na_(4)Ge_(9)O_(20)nanoparticles(3D Na_(4)Ge_(9)O_(20)@N-C)have been synthesized via freeze-drying approach with NaCl as both template and sodium source for *** employment of NaCl has two special roles:on the one hand,the NaCl crystals act as template and facilitate the formation of 3D porous structure,while on the other hand,the NaCl crystals serving as sodium source and support the ion exchange between NaCl and GeO_(2)promote the formation of Na_(4)Ge_(9)O_(20).Benefiting from the unique method,the prepared 3D Na_(4)Ge_(9)O_(20)@N-C not only suppresses the volume change by using carbon as buffer layers but also demonstrates an improved electronic conductivity and a shortened ionic *** utilized as an anode material for LIBs,the 3D Na_(4)Ge_(9)O_(20)@N-C composites deliver high reversible capacity(896.2 mAh·g^(-1)at0.1 A·g^(-1)after 100 cycles),good cycling stability(520.8 mAh·g^(-1)at 2.0 A·g^(-1)after 400 cycles)and excellent rate performance(636.0 mAh·g^(-1)at 2.0 A·g^(-1)).This work provides a strategy to improve the electrochemical performance of germanium-based anode materials for lithium-ion batteries.

关键词： Germanium-based anode Na_(4)Ge_(9)O_(20) Ndoped carbon Porous nanostructure Lithium-ion batteries(LIBs)