检索结果-南通市图书馆

Graphene/F_(16)CuPc synaptic transistor for the emulation of multiplexed neurotransmission

在线全文

学校读者我要写书评

暂无评论

Journal of Semiconductors 2025年第1期46卷 215-223页

作者： Zhipeng Xu Yao ni Mingxin Sun Yiming Yuan ning Wu Wentao Xu Institute of Photoelectronic Thin Film devices and Technology Key Laboratory of Photoelectronic Thin Film Devices and Technology of TianjinCollege of Electronic Information and Optical EngineeringEngineering Research Center of Thin Film Photoelectronic Technology of Ministry of EducationNankai UniversityTianjin 300350China Shenzhen Research Institute of Nankai University Shenzhen 518000China Smart Sensing Interdisciplinary Science Center Nankai UniversityTianjin 300350China School of Integrated Circuits Guangdong University of TechnologyGuangzhou 510006China

We demonstrate a bipolar graphene/F_(16)CuPc synaptic transistor(GFST)with matched p-type and n-type bipolar properties,which emulates multiplexed neurotransmission of the release of two excitatory neurotransmitters in graphene and F_(16)CuPc channels,*** process facilitates fast-switching plasticity by altering charge carriers in the separated *** complementary neural network for image recognition of Fashion-MniST dataset was constructed using the matched relative amplitude and plasticity properties of the GFST dominated by holes or electrons to improve the weight regulation and recognition accuracy,achieving a pattern recognition accuracy of 83.23%.These results provide new insights to the construction of future neuromorphic systems.

关键词： synaptic transistor dual excitatory channels fast-switching plasticity multiplexed neurotransmission

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

在线全文

学校读者我要写书评

暂无评论

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

Nano high-entropy oxide cathode with enhanced stability for direct borohydride fuel cells

在线全文

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2025年第1期100卷 309-316页

作者： Lei Zhang Lingfeng Kuang Lianke Zhang Wen Chu Haiying Qin Jing Zhang Junjing He Hualiang ni Hongzhong Chi New Energy Materials Research Center College of Materials and Environmental EngineeringHangzhou Dianzi UniversityHangzhou 310018ZhejiangChina School of Materials Science and Engineering Zhejiang UniversityHangzhou 310027ZhejiangChina Key Laboratory of MEMS of Ministry of Education School of Integrated CircuitsSoutheast UniversityNanjing 210096JiangsuChina

High-entropy materials have become high-activity electrocatalysis owing to their high-entropy effect and multiple active ***,we synthesize a series of carbon-supported nano high-entropy oxides(HEOs/C),specifically (PtFeConiCu)O/C,using a carbothermal shock (CTS) method for application as a cathode catalyst in direct borohydride fuel cells (dBFCs).The microstructure of the prepared catalysts was characterized by X-ray photoelectron spectroscopy,X-ray absorption fine structure,and transmission electron *** prepared (PtFeConiCu)O/C,with particle sizes ranging from 2 to 4 nm,demonstrates 3.94 transferred electrons towards the oxygen reduction reaction in an alkaline environment,resulting in a minimal H_(2)O_(2)yield of 2.6%.Additionally,it exhibits a Tafel slope of 61 mV dec-1,surpassing that of commercial Pt/C (82 mV dec-1).Furthermore,after 40,000 cycles of cyclic voltammetry(CV) testing,the half-wave potential of (PtFeConiCu)O/C shows a positive shift of 3 mV,with no notable decline in the limiting current *** (PtFeConiCu)O/C is used as a cathode catalyst in dBFCs,the dBFC achieves a maximum power density of 441 mW cm^(-2)at 60°C and sustains a cell voltage of approximately 0.73 V after 52 h at 30°*** findings confirm that HEO/C is a promising cathode catalyst for dBFCs.

关键词： High-entropy oxides Oxygen reduction reaction Carbothermal shock Stability direct borohydride fuel cells

Exosomes:the next-generation therapeutic platform for ischemic stroke

在线全文

学校读者我要写书评

暂无评论

Neural Regeneration Research 2025年第5期20卷 1221-1235页

作者： Wenjing Yin Hongyin Ma Yang Qu Jiaxin Ren Yingying Sun Zhen-ni Guo Yi Yang Stroke Center Department of NeurologyFirst Hospital of Jilin UniversityChangchunJilin ProvinceChina Neuroscience Research Center Department of NeurologyFirst Hospital of Jilin UniversityChangchunJilin ProvinceChina

Current therapeutic strategies for ischemic stroke fall short of the desired objective of neurological functional ***,there is an urgent need to develop new methods for the treatment of this *** are natural cell-derived vesicles that mediate signal transduction between cells under physiological and pathological *** have low immunogenicity,good stability,high delivery efficiency,and the ability to cross the blood–brain *** physiological properties of exosomes have the potential to lead to new breakthroughs in the treatment of ischemic *** rapid development of nanotechnology has advanced the application of engineered exosomes,which can effectively improve targeting ability,enhance therapeutic efficacy,and minimize the dosages *** in technology have also driven clinical translational research on *** this review,we describe the therapeutic effects of exosomes and their positive roles in current treatment strategies for ischemic stroke,including their antiinflammation,anti-apoptosis,autophagy-regulation,angiogenesis,neurogenesis,and glial scar formation reduction ***,it is worth noting that,despite their significant therapeutic potential,there remains a dearth of standardized characterization methods and efficient isolation techniques capable of producing highly purified *** optimization strategies should prioritize the exploration of suitable isolation techniques and the establishment of unified workflows to effectively harness exosomes for diagnostic or therapeutic applications in ischemic ***,our review aims to summarize our understanding of exosome-based treatment prospects in ischemic stroke and foster innovative ideas for the development of exosome-based therapies.

关键词： blood–brain barrier electroacupuncture engineering exercise exosomes ischemic stroke mesenchymal stem cells microglia neuroprotection stents

Constructing Ti_(3)C_(2)T_(x)-MXene-based gradient woodpile structure by direct ink writing 3d printing for efficient microwave absorption

在线全文

学校读者我要写书评

暂无评论

International Journal of Minerals,Metallurgy and Materials 2025年第3期32卷 657-667页

作者： Changtian Zhu Pei Liu Jin Chen Zixuan ding Guohui Tang Qingqing Gao Yinxu ni Kai Xu Zhilei Hao Gaojie Xu Fenghua Liu School of Materials Science and Chemical Engineering Ningbo UniversityNingbo 315211China ningbo Institute of Materials Technology&Engineering Chinese Academy of SciencesNingbo 315201China

As a novel 2d material,Ti_(3)C_(2)T_(x)-MXene has become a major area of interest in the field of microwave absorption(MA).However,the MA effect of common Ti_(3)C_(2)T_(x)-MXene is not prominent and often requires complex processes or combinations of other ma-terials to achieve enhanced *** this context,a kind of gradient woodpile structure using common Ti_(3)C_(2)T_(x)-MXene as MA ma-terial was designed and manufactured through direct ink writing(dIW)3d *** minimum reflection loss(RL_(min))of the Ti_(3)C_(2)T_(x)-MXene-based gradient woodpile structures with a thickness of less than 3 mm can reach-70 dB,showing considerable improve-ment compared with that of a completely filled *** addition,the effective absorption bandwidth(EAB)reaches 7.73 *** study demonstrates that a Ti_(3)C_(2)T_(x)-MXene material with excellent MA performance and tunable frequency band can be successfully fab-ricated with a macroscopic structural design and through dIW 3d printing without complex material hybridization and modification,of-fering broad application prospects by reducing electromagnetic wave radiation and interference.

关键词： Ti_(3)C_(2)T_(x)-MXene electromagnetic wave absorption macro-design impedance matching 3d printing ink

Chemical characteristics and sources apportionment of volatile organic compounds in the primary urban area of Shijiazhuang,North China Plain

在线全文

学校读者我要写书评

暂无评论

Journal of Environmental Sciences 2025年第3期149卷 465-475页

作者： Xiao Zhang Junfeng Wang Jiangwei Zhao Junliang He Yali Lei Kai Meng RuiWei Xue Zhang Miaomiao Zhang Shuangying ni Eleonora Aruffo College of geographical sciences and Environment Shijiazhuang UniversityShijiazhuang 050035China Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control Collaborative Innovation Center of Atmospheric Environment and Equipment TechnologySchool of Environmental Science and EngineeringNanjing University of Information Science and TechnologyNanjing 210044China Hebei Province Ecology Environmental Monitoring Center Shijiazhuang 050037China Key Lab of Geographic Information Science of the Ministry of Education School of Geographic SciencesEast China Normal UniversityShanghai 200241China Hebei Provincial Institute of Meteorological Sciences Shijiazhuang 050021China Key Laboratory of Meteorology and Ecological Environment of Hebei Province Shijiazhuang 050021China Hebei Provincial Academy of Ecological Environmental Science Shijiazhuang 050037China department of Advanced Technologies in Medicine&dentistry University“G.d’Annunzio”of Chieti-PescaraChieti 66100Italy Center for Advanced Studies and Technology-CAST Chieti 66100Italy

VOCs(Volatile organic compounds)exert a vital role in ozone and secondary organic aerosol production,necessitating investigations into their concentration,chemical characteristics,and source apportionment for the effective implementation of measures aimed at preventing and controlling atmospheric *** to October 2020,onlinemonitoringwas conducted in the main urban area of Shijiazhuang to collect data on VOCs and analyze their concentrations and ***,the PMF(positive matrix factorization)method was utilized to identify the VOCs *** indicated that the TVOCs(total VOCs)concentration was(96.7±63.4μg/m^3),with alkanes exhibiting the highest concentration of(36.1±26.4μg/m^3),followed by OVOCs(16.4±14.4μg/m^3).The key active components were alkenes and aromatics,among which xylene,propylene,toluene,propionaldehyde,acetaldehyde,ethylene,and styrene played crucial roles as reactive *** sources derived from PMF analysis encompassed vehicle emissions,solvent and coating sources,combustion sources,industrial emissions sources,as well as plant sources,the contribution of which were 37.80%,27.93%,16.57%,15.24%,and 2.46%,***,reducing vehicular exhaust emissions and encouraging neighboring industries to adopt low-volatile organic solvents and coatings should be prioritized to mitigate VOCs levels.

关键词： Volatile organic compounds Pollution characteristics Ozone formation potential OH radical loss rate Source apportionment

Upper crustal azimuthal anisotropy and seismogenic tectonics of the Hefei segment of the Tan-Lu Fault Zone from ambient noise tomography

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Earth and Planetary Physics 2025年第02期 253-265页

作者： Cheng Li HuaJian Yao Song Luo HaiJiang Zhang LingLi Li XiaoLi Wang ShengJun ni State Key Laboratory of Mining Response and disaster Prevention and Control in deep Coal Mines Anhui University of Science and Technology School of Earth and Space Sciences University of Science and Technology of China Mengcheng National Geophysical Observatory University of Science and Technology of China Anhui Earthquake Agency Anhui Huizhou Geology Security Institute Company Ltd.

The Tan-Lu Fault Zone is a large NNE-trending fault zone that has a substantial effect on the development of eastern China and its earthquake disaster prevention efforts. Aiming at the azimuthally anisotropic structure in the upper crust and seismogenic tectonics in the Hefei segment of this fault, we collected phase velocity dispersion data of fundamental mode Rayleigh waves from ambient noise cross-correlation functions of ～400 temporal seismographs in an area of approximately 80 × 70 km along the fault zone. The period band of the dispersion data was ～0.5–10 s. We inverted for the upper crustal three-dimensional(3-d) shear velocity model with azimuthal anisotropy from the surface to 10 km depth by using a 3-d direct azimuthal anisotropy inversion method. The inversion result shows the spatial distribution characteristics of the tectonic units in the upper crust. Additionally, the deformation of the Tan-Lu Fault Zone and its conjugated fault systems could be inferred from the anisotropy model. In particular, the faults that have remained active from the early and middle Pleistocene control the anisotropic characteristics of the upper crustal structure in this area. The direction of fast axes near the fault zone area in the upper crust is consistent with the strike of the faults, whereas for the region far away from the fault zone, the direction of fast axes is consistent with the direction of the regional principal stress caused by plate movement. Combined with the azimuthal anisotropy models in the deep crust and uppermost mantle from the surface wave and Pn wave, the different anisotropic patterns caused by the Tan-Lu Fault Zone and its conjugated fault system nearby are shown in the upper and lower crust. Furthermore,by using the double-difference method, we relocated the Lujiang earthquake series, which contained 32 earthquakes with a depth shallower than 10 km. Both the Vs model and earthquake relocation results indicate that earthquakes mostly occurred in th

关键词：

Structural characteristics and formation process of pseudotachylyte in the Wulian detachment fault zone on the Jiaodong Peninsula， China

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Journal of Earth Science 2025年

作者： Ruijie Wang Jinlong ni Guiyuan Li Junlai Liu Lei Ji Yiren Wang Runye Lü School of Earth Sciences and Engineering， Shandong University of Science and Technology Qingdao Geologic and Mineral Geotechnical Engineering Co.， Ltd. State Key Laboratory of Geological Processes and Mineral Resources， China University of Geosciences(Beijing) Laboratory for Marine Mineral Resources，Qingdao Marine Science and Technology Center

Exploring pseudotachylytes (PSTs) within detachment fault zones provides valuable insight into the kinematic processes of these fault systems. Nevertheless， significant controversy persists regarding the origin and formation mechanisms of PST veins. The PST was initially identified within the Wulian detachment fault zone (dFZ) on the Jiaodong Peninsula by delineating the deformation characteristics of the fault zone's transition from ductile to ductile-brittle behavior. Macroscopic and microstructural features of the PST within the Wulian dFZ were examined using geological field surveys. Using quantitative and high-resolution techniques， such as scanning electron microscopy， TIMA-X mineral composition analysis， and transmission electron microscopy， variations in mineral composition between the veins and detritals of the PST were investigated. Furthermore， this study has investigated the progressive deformation processes and underlying causes contributing to PST formation within the dFZ. This study revealed the presence of both type d and B-type PSTs in the Wulian dFZ formed under ductile or ductile-brittle conditions. These PSTs exhibit fracture and fusion structures resulting from fault frictional fragmentation and frictional melting and undergo progressive deformation. during the initial stages of the d-type PST formation， biotite fragmentation in poorly cohesive foliation was the primary contributor， supplemented by frictional melting. As the deformation progressed， quartz fragmentation and partial melting became dominant， constituting up to 81.9% of the matrix. The formation of the B-type PST aligns with deformation under brittle or ductile-brittle conditions， with frictional fragmentation and fragmentation flow playing significant roles. Vein formation is initiated by biotite fragmentation or partial melting， followed by quartz， potassium feldspar， albite fragmentation， or partial melting. Mature PST veins exhibited distinct zoning characteristics， with a diffu

关键词：

Formation and evolution of supercritical geofluid

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Science China Earth Sciences 2025年第1期68卷 39-51页

作者： Huaiwei ni Yilin XIAO Xiaolin XIONG Xiandong LIU Chunxiao GAO Yi-Xiang CHEN Yunguo LI Wan-Cai LI Xuan GUO Yang-Yang WANG dong-Bo TAN Li ZHANG State Key Laboratory of Lithospheric and Environmental Coevolution University of Science and Technology of ChinaHefei230026China deep Space Exploration Laboratory/School of Earth and Space Sciences University of Science and Technology of ChinaHefei230026China Guangzhou Institute of Geochemistry Chinese Academy of SciencesGuangzhou510640China School of Earth Sciences and Engineering Nanjing UniversityNanjing210023China State Key Lab of Superhard Materials Jilin UniversityChangchun130012China

In this work,we provide a comprehensive review on the formation,evolution,properties,and effects of supercritical *** Earth's interior,enhanced miscibility between H_(2)O and silicate by the addition of special components or by the increase of pressure and temperature gives rise to supercritical geofluid with a significant amount of both H_(2)O and silicate *** formation of supercritical geofluid in magmatic-hydrothermal systems,typified by pegmatite system,is governed by meltfluid critical *** formation of supercritical geofluid in metamorphic systems,typified by subducted slab,is governed by the second critical end *** results suggest that the presence of boron and fluorine in pegmatite system makes it possible to form supercritical geofluid at crustal depths,but the release of supercritical geofluid from subducted slab is withheld until almost 100 km depth.A major presence of both H_(2)O and depolymerized structural units(monomers,dimers,etc.)endows supercritical geofluid with unique physical properties including low density,low elastic moduli,low viscosity,high diffusivity,and high electrical *** geofluid can effectively mobilize a variety of elements even including high field strength elements and heavy rare earth *** chemical signatures of supercritical geofluid can be inherited by metasomatized mantle and mantle-derived melts,and this could give an explanation of the oxidation of arc *** separation of supercritical geofluid through the mechanism of spinodal decomposition leads to formation of a melt *** fluid inclusions recovered from subduction zone rocks and pegmatites are possible relics of supercritical *** geofluid can cause electrical anomaly and low seismic velocity near the top of subducted slab,and can be linked with intermediate-focus *** geofluid may have played a crucial role in the formation of pegmatites and associ

关键词： Supercritical geofluid Miscibility Subduction zone Pegmatite

同方期刊数据库