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Thermally modulated photoelectronic synaptic behavior in HfS_(2)/VO_(2) heterostructure

Rare Metals 2024年第8期43卷 3798-3809页

作者： Le Wang lin Wang Xiao-Yun Ye Xiong-{1. Xu li-Yan Shang Ya-Wei li jin-Zhong Zhang liang-Qing Z{1. Zhi-gao {1. Technical Center for Multifunctional Magneto-Optical Spectroscopy(Shanghai) Engineering Research Center of Nanophotonics&Advanced Instrument(Ministry of Education)Department of PhysicsSchool of Physics and Electronic ScienceEast China Normal UniversityShanghai 200241China Collaborative Innovation Center of Extreme Optics Shanxi UniversityTaiyuan 030006China

Neuromorphic computing is known for its efficient computational speed,low latency,and reduced power consumption,which is considered a pivotal technology to overcome the von Neumann *** synapses are an indispensable component of neuromorphic computational artificial neural *** guarantee effective and precise processing of optical signals,it must have a high responsivity,detectivity,and the ability to adapt to various ***,a synaptic transistor based on the HfS_(2)/VO_(2) heterojunction with a responsivity of8.6×1.^(3) A·W^(-1.and a detectivity of {1.6×1.^(1.)Jones at405 nm laser was ***,the typical synaptic behavior was successfully simulated,including postsynaptic currents(PSCs),the transition from shortterm plasticity(STP)to long-term plasticity(LTP).When VO_(2) converts from the semiconductor state to the metal state,the HfS_(2)/VO_(2) heterojunction transforms into a Schottky heterojunction from a TypeⅡheterojunction with ***'s important,the heterojunction still exhibits excellent responsivity and detectivity,as well as stability of synaptic *** addition,the classical Pavlovian conditioning experiment is simulated under different laser intensity to study the brain's associative learning *** results demonstrate that the HfS_(2)/VO_(2) heterojunction synapse exhibits significant responsivity and detectivity and is adaptable to high-temperature environments,showing great potential for neuromorphic computational applic ations.

关键词： HfS_(2) VO_(2) Phase transition Photoelectric synapse Heterojunction

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Possible Energy Network with polygeneration system and CCS for china

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中国科学：技术科学英文版 2010年第1期53卷 33-39页

作者： gao lin1.li sheng1.2.jin hongguang1.& lin hu1.1.institute of engineering thermophysics,{1.,Beijing 1.01.0,china 2 Graduate School of {1.,Beijing 1.0039,china institute of {1. thermophysics Chinese Academy of Sciences Graduate School of chinese academy of sciences

On basis of adopting polygeneration systems for power and alternative fuels,capturing CO2 with near zero energy penalties,and storing CO2 on sites,a new kind of Energy Network can integrate energy utilization,CO2 capture,transportation and storage ***-economic analysis of this solution focusing on Inner Mongolia and the Yangtze River Delta districts had been carried with comparison to the chain method for energy utilization and CO2 *** solution can save 21.5% of energy,and reduce 35% of total *** adoption of advanced polygeneration systems contributes 52.2% of the total saved costs,and the integration of energy utilization and CO2 sequestration in the Energy Network contributes 47.8%.From the aspect of CCS,the CO2 sequestration cost in the Energy Network can be as low as 1. $/t due to the lower energy penalties of capture in polygeneration systems and the combination of CO2 source and *** Energy Network exhibits attractive performance on energy saving,costs reduction for CCS,which may be a promising solution for sustainable development of china.

关键词： CO2 capture and storage Energy Network polygeneration system

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Acceptor engineering Produces Ultrafast Nonradiative Decay in NIR-Ⅱ Aza-BODIPY Nanoparticles for Efficient Osteosarcoma Photothermal Therapy via Concurrent Apoptosis and Pyroptosis

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Research 2024年第1期2024卷 625-635页

作者： Zhenxiong Shi hua Bai Jiaxing Wu Xiaofei Miao Jia {1. Xianning Xu Yi liu Jiamin Jiang Jiaqi Yang Jiaxin Zhang Tao Shao Bo Peng huili Ma Dan Zhu Guojing Chen Wenbo hu lin li Wei huang Frontiers Science Center for Flexible Electronics Xi’an Institute of Flexible Electronics(IFE)and Xi’an Institute of Biomedical Materials&EngineeringNorthwestern Polytechnical UniversityXi’an 710072China Key Laboratory for Organic Electronics and Information Displays&institute of Advanced Materials(IAM) Nanjing University of Posts&TelecommunicationsNanjing 210023China Key Laboratory of Flexible Electronics(KLOFE)and IAM Nanjing Tech UniversityNanjing 211800China Britton Chance Center for Biomedical Photonics-MoE Key Laboratory for Biomedical Photonics Wuhan National Laboratory for Optoelectronics-Advanced Biomedical Imaging FacilityHuazhong University of Science and TechnologyWuhan 430074China Department of Orthopedics Xijing HospitalThe Fourth Military Medical UniversityXi’an 710032China The institute of Flexible Electronics(IFE Future Technologies)Xiamen UniversityXiamen 361005China

Small-molecule photothermal agents(PTAs)with intense second near-infrared(NIR-Ⅱ,1.000 to 1.700 nm)absorption and high photothermal conversion efficiencies(PCEs)are promising candidates for treating deep-seated tumors such as *** date,the development of small-molecule NIR-Ⅱ PTAs has largely relied on fabricating donor–acceptor–donor(D–A–D/D′)structures and limited success has been ***,through acceptor engineering,a donor–acceptor–acceptor(D–A–A′)-structured NIR-Ⅱ aza-boron-dipyrromethene(aza-BODIPY)PTA(SW8)was readily developed for the 1.064-nm laser-mediated phototheranostic treatment of *** the donor groups to acceptor groups produced remarkable red-shifts of absorption maximums from first near-infrared(NIR-Ⅰ)regions(~808 nm)to NIR-Ⅱ ones(~1.064 nm)for aza-BODIPYs(SW1.to SW8).Furthermore,SW8 self-assembled into nanoparticles(SW8@NPs)with intense NIR-Ⅱ absorption and an ultrahigh PCE(75%,1.064 nm).This ultrahigh PCE primarily originated from an additional nonradiative decay pathway,which showed a 1.0-fold enhanced decay rate compared to that shown by conventional pathways such as internal conversion and vibrational ***,SW8@NPs performed highly efficient 1.064-nm laser-mediated NIR-Ⅱ photothermal therapy of osteosarcoma via concurrent apoptosis and *** work not only illustrates a remote approach for treating deep-seated tumors with high spatiotemporal control but also provides a new strategy for building high-performance small-molecule NIR-Ⅱ PTAs.

关键词： donor BODIPY intense

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Study of the response of 1.B-doped MCP to wide-energy range neutrons from eV to MeV

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Nuclear Science and Techniques 2024年第8期35卷 132-141页

作者： Qiang li li‑Jiao Wang Xiang‑Biao Qiu jing‑Wen li Wei Xu Tao li Ze‑Bin lin Chang‑Jun Ning Yong‑Hao Chen Rui‑Rui Fan Kang Sun jing‑Yu Tang Rong Zhang Han‑Tao jing Bo Mei Qi An Hao‑Fan Bai Jiang‑Bo Bai Jie Bao Ping Cao Qi‑Ping Chen Zhen Chen Zeng‑Qi Cui An‑Chuan Fan Chang‑Qing Feng Fan‑Zhen Feng Ke‑Qing gao Min‑Hao Gu Chang‑Cai Han Zi‑Jie Han Guo‑Zhu He Yong‑Cheng He Yang Hong Yi‑Wei hu Han‑Xiong huang Wei‑hua Jia Hao‑Yu Jiang Wei Jiang Zhi‑Jie Jiang Zheng‑Yao jin ling Kang Bo li Chao li Gong li Jia‑Wen li Xiao li Yang li Jie liu Rong liu Shu‑Bin liu Guang‑Yuan Luan Bin‑Bin Qi Jie Ren Zhi‑Zhou Ren Xi‑Chao Ruan Zhao‑hui Song Zhi‑Xin Tan sheng‑Da Tang Peng‑Cheng Wang Zhao‑hui Wang Zhong‑Wei Wen Xiao‑Guang Wu Xuan Wu li‑Kun Xie Yi‑Wei Yang Han Yi Yong‑Ji Yu Guo‑hui Zhang lin‑Hao Zhang Mo‑Han Zhang Qi‑Wei Zhang Xian‑Peng Zhang Yu‑liang Zhang Yue Zhang Zhi‑Yong Zhang Mao‑Yuan Zhao Lu‑Ping Zhou Zhi‑Hao Zhou Ke‑Jun Zhu institute of High Energy Physics Chinese Academy of Sciences(CAS)Beijing 100049China Spallation Neutron Source Science Center Dongguan 523803China State Key Laboratory of Particle Detection and Electronics Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China Dongguan Songshan Lake Future School Dongguan 523808China North Night Vision Science&Technology(Nanjing)Research {1. Co.Ltd. Nanjing 211106China Sino‑French institute of Nuclear {1. and Technology Sun Yat-sen UniversityZhuhai 519082China School of Nuclear Science and Technology University of Science and Technology of ChinaHefei 230027China State Key Laboratory of Particle Detection and Electronics University of Science and Technology of ChinaHefei 230026China Department of Modern Physics University of Science and Technology of ChinaHefei 230026China State Key Laboratory of Nuclear Physics and Technology School of PhysicsPeking UniversityBeijing 100871China institute of Nuclear Physics and Chemistry China Academy of Engineering PhysicsMianyang 621900China Key Laboratory of Nuclear Data China Institute of Atomic EnergyBeijing 102413China USTC Archaeometry Lab University of Science and Technology of ChinaHefei 230026China Northwest institute of Nuclear Technology Xi’an 710024China University of chinese academy of sciences Beijing 100049China

Neutron-sensitive microchannel plates(nMCPs)have applications in neutron detection,including energy spectrum measurements,neutron-induced cross sections,and neutron imaging.1.B-doped MCPs(B-MCPs)have attracted significant attention owing to their potential for exhibiting a high neutron detection efficiency over a large neutron energy *** spatial and temporal resolutions are useful for neutron energy-resolved ***,their practical applications still face many technical *** this study,a B-MCP with 1. mol%1.B was tested for its response to wide-energy neutrons from eV to MeV at the Back-n white neutron source at the china Spallation Neutron *** neutron detection efficiency was calibrated at 1.eV,which is approximately 300 times that of an ordinary MCP and indicates the success of 1. B *** factors that caused the reduction in the detection efficiency were simulated and *** neutron energy spectrum obtained using B-MCP was compared with that obtained by other measurement methods,and showed very good consistency for neutron energies below tens of *** response is more complicated at higher neutron energy,at which point the elastic and nonelastic reactions of all nuclides of B-MCP gradually become *** is beneficial for the detection of neutrons,as it compensates for the detection efficiency of B-MCP for high-energy neutrons.

关键词： Neutron radiation image 1.B-doped MCP Neutron response Wide-energy range neutrons

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基于农户受偿意愿的天然林管护补偿标准研究

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西北林学院学报 2024年第2期39卷 285-292页

作者：王本业林玉芳任琳李妍高建中西北农林科技大学经济管理学院陕西杨陵712100 延安职业技术学院机电工程系陕西延安716000 太白山国家级自然保护区管理局党委办公室陕西杨陵712100

全面停止天然林商业性采伐政策是维护森林资源与生态安全的有效手段,研究效用最大化条件下有效激励农户主动参与天然林管护的补偿标准对政策的进一步完善与推进具有重要的意义。基于陕西、辽宁、湖南、福建4省91.份集体林区调研数据,从... 详细信息

全面停止天然林商业性采伐政策是维护森林资源与生态安全的有效手段,研究效用最大化条件下有效激励农户主动参与天然林管护的补偿标准对政策的进一步完善与推进具有重要的意义。基于陕西、辽宁、湖南、福建4省91.份集体林区调研数据,从农户受偿意愿视角,利用非参数估计和参数估计2种方法,测算出政策参与后农户意愿投入禁伐天然林管护的补偿标准,并利用Logistics模型探讨农户天然林管护意愿的影响因素。结果表明,1.样本选区约有76.8%的农户愿意投入天然林管护,仍有进一步提升空间;2)非参数估计方法与参数估计计算结果存在一定的差值,2个补偿额度可作为天然林停伐管护补偿标准的动态调整区间。总体上看,参数估计与非参数估计得到农户的受偿意愿调整区间为0.1.~0.1.万元/hm^(2),但从不同省份结果看,呈现出“北高南低”的特征;3)农户天然林管护意愿受偿农户个体特征、农户家庭特征、林地经营特征、政策环境特征的共同影响。鉴于此,政府部门应通过动态调整补偿标准、建立多元主体补偿方式、推动林地产权市场化运作等方式提高政策的执行成效。

关键词：天然林管护受偿意愿补偿标准效用理论 Logistics模型

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Cloning and expression pattern of a dehydrin-like BDNI gene from drought-tolerant Boea crassifolia Hemsl.

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chinese Science Bulletin 2000年第22期45卷 2072-2077页

作者： ZHAO huiwu, liU Han, YU Haiyuan, hu Yuanlei, gao Yin, li Zhenyu & lin ZhongpingNational Laboratory of Protein engineering and Plant Genetic engineering , Peking University, Beijing 100871, china Botanical institute, chinese academy of sciences, Beijing 100093, china Correspondence should be addressed to lin Zhongping

A 500-bp cDNA fragment was amplified via RT-PCR from drought-induced total RNA of the drought-tolerant B. crassifolia Hemsl. using primers based on the sequence of published dehydrin conserved region. By using 5’ RACE, full-length coding region (1.148 bp) of BDN1.gene was produced. It is a new member of the dehydrin gene family. Southern analysis indicated that BDN1.is present in the 6. crassifolia genome as a single-copy gene. Northern analysis revealed that its expression is inducible by drought and cold stresses as well as ABA application.

关键词： drought-tolerant plant Boea crassifolia Hemsl. dehydrin 5’ RACE BDN1 gene.

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裂纹内水压分布对重力坝断裂特性的影响

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土木工程学报 2009年第3期42卷 132-141页

作者：刘钧玉林皋胡志强李建波大连理工大学辽宁大连116024 沈阳工业大学辽宁沈阳110178

应用比例边界有限元法(SBFEM)研究裂纹内水压及其分布对裂纹尖端应力强度因子变化的影响。SBFEM的突出优点是可以直接给出位移场和应力场沿径向变化的解析解,因而非常适用于断裂等奇异性问题的求解,并且对两种介质界面断裂问题的计算也... 详细信息

应用比例边界有限元法(SBFEM)研究裂纹内水压及其分布对裂纹尖端应力强度因子变化的影响。SBFEM的突出优点是可以直接给出位移场和应力场沿径向变化的解析解,因而非常适用于断裂等奇异性问题的求解,并且对两种介质界面断裂问题的计算也非常方便。以重力坝坝踵界面裂纹为例计算裂纹内不同水压分布规律、介质的不同弹模比值以及不同的裂纹长度对应力强度因子的性质及其数值大小变化的影响。计算结果表明,不考虑裂纹内水压或裂纹内水压强度较小时,在坝基弹模较低的条件下,重力坝坝踵界面裂纹处于压剪状态;但当裂纹内水压强度较大时,则转换为拉剪状态。裂纹内存在水压作用时,随着水压变化规律以及两种介质弹模比的变化,KⅠ和KⅡ的变化也很明显。研究结果对工程上评价重力坝的断裂特性将具有重要意义。

关键词：应力强度因子比例边界有限元法界面裂纹重力坝

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西藏拿若铜(金)矿床隐爆角砾岩对成矿时代的约束

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中国地质 2024年第2期51卷 385-398页

作者：高轲宋扬刘治博杨欢欢林彬李发桥中国地质调查局成都地质调查中心四川成都610081 中国地质科学院矿产资源研究所北京100037 中国地质大学(北京) 北京100083

【研究目的】拿若矿床是多龙矿集区4个超大型矿床之一,由斑岩型和角砾岩型矿体组成。斑岩型矿体研究资料丰富,角砾岩矿体研究程度较浅,隐爆作用与成矿作用的时代关系还缺乏详细的研究。隐爆角砾岩整体呈筒状产出,角砾成分为长石石英砂... 详细信息

【研究目的】拿若矿床是多龙矿集区4个超大型矿床之一,由斑岩型和角砾岩型矿体组成。斑岩型矿体研究资料丰富,角砾岩矿体研究程度较浅,隐爆作用与成矿作用的时代关系还缺乏详细的研究。隐爆角砾岩整体呈筒状产出,角砾成分为长石石英砂岩和花岗闪长斑岩,胶结物成分主要为岩粉。【研究方法】本次研究旨在通过年代学证据探讨隐爆角砾岩形成与成矿的时代关系。【研究结果】锆石矿物学显示花岗闪长斑岩(NR1.锆石边部发生溶蚀边,震荡环带减弱,未彻底重结晶;胶结物(NR2)锆石结晶较好,震荡环带清晰。两种样品的锆石微量元素特征显示,两期岩浆源区均为陆壳环境;稀土配分曲线均较陡,富集重稀土,亏损轻稀土;具有显著的正Ce异常和负Eu异常。LA-ICP-MS锆石U-Pb定年结果显示,花岗闪长斑岩的锆石206Pb/238U年龄为1.7.3~1.5.4 Ma,加权平均年龄为(1.0.8±1.4)Ma,成岩时间在1.0.8 Ma左右;胶结物的锆石206Pb/238U年龄为1.3.5~1.9.9 Ma,加权平均年龄为(1.6.4±1.2)Ma,隐爆时代在1.6.4 Ma左右。【结论】拿若矿床共发生两期成岩作用,分别为~1.0 Ma和~1.7Ma。拿若矿床成矿作用发生在1.6~1.7 Ma,而非~1.0 Ma。根据年代学证据认为,成矿作用和隐爆作用受同期岩浆作用控制,隐爆作用在前而成矿作用在后,岩浆演化在时间和空间上存在差异。

关键词：锆石U-Pb定年隐爆时代成岩成矿时代隐爆角砾岩拿若西藏矿产勘查工程

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Matched MnO@C anode and porous carbon cathode for li-ion hybrid supercapacitors

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Rare Metals 2023年第6期42卷 1959-1968页

作者： Cui-hua An Yue-Qing {1. Shuai Wu ling-Xiao gao {1.-Yang lin Qi-Bo Deng Ning hu Key Laboratory of Hebei Province on Scale-Span Intelligent Equipment Technology and School of Mechanical EngineeringHebei University of TechnologyTianjin300401China Wuhan Green Power Hydrogen Energy Technology Co. LTDWuhan430000China The Green Aerotechnics Research institute of Chongqing Jiaotong University Chongqing401120China State Key Laboratory of Reliability and Intelligence Electrical Equipment Hebei University of TechnologyTianjin300130China institute of Materials Physics and Technolgy Hamburg University of TechnologyHamburg21073Germany

Holding a promise of achieving high power and energy densities,li-ion hybrid electrochemical capacitors present a crucial future direction for energy storage ***,technical challenges remain to appropriately couple both high-power capacitor-type and high-energy battery-type electrode materials within a same *** addition,the current electrode materials in the device are usually prepared separately,which leads to lengthy preparation,time-consuming and *** this work,we report a simple method to prepare porous carbon materials(PC) with and without MnO nanoparticle cores,which function as very unique anode/cathode pairs for very high-performance li ion hybrid *** the respective merits of high li storage capacity from the MnO@C anode and high-rate performance from the PC cathode,the resulted device exhibits a remarkable energy density of 89 Wh·kg^(-1.(at 48 W·kg^(-1.) and can reach a battery-inaccessible power density of 1. kW·kg^(-1.(at 45Wh·kg^(-1.).

关键词： li-ion hybrid supercapacitors Structural affinity MnO@C Porous carbon(PC) High energy density

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预水解硫酸盐竹浆的漂白工艺研究

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中国造纸 2024年第7期43卷 24-31页

作者：牛胜玥罗西尧林凯睿杨嘉玮高亚锋胡会超李建国陈礼辉福建农林大学材料工程学院植物纤维功能材料国家林和草原局重点实验室福建福州350108

本研究以预水解硫酸盐未漂竹浆为原料,采用“氧脱木质素(O)-氯漂(D0)-氧和过氧化氢强化碱抽提(Eop)-氯漂(D_(1.)”的漂白工艺制备可用作溶解浆的竹浆。通过优化各工段的处理条件(氧漂白段:氢氧化钠用量2.0%、氧压0.5 MPa、反应时间60 mi... 详细信息

本研究以预水解硫酸盐未漂竹浆为原料,采用“氧脱木质素(O)-氯漂(D0)-氧和过氧化氢强化碱抽提(Eop)-氯漂(D_(1.)”的漂白工艺制备可用作溶解浆的竹浆。通过优化各工段的处理条件(氧漂白段:氢氧化钠用量2.0%、氧压0.5 MPa、反应时间60 min、反应温度95℃;D0漂白段:二氧化氯用量3.5%、反应时间80 min、反应温度70℃、初始pH值4.0;Eop漂白段:过氧化氢用量1.4%、氧压0.2 MPa、反应时间90 min、反应温度90℃、初始pH值1..5;D1.白段:二氧化氯用量1.5%、反应时间1.0 min、反应温度70℃、初始pH值4.0),最终制备白度82.7%、黏度440.0 mL/g、灰分含量0.24%、α-纤维素含量90.92%的竹浆。

关键词：竹浆氧脱木质素 ClO_(2)漂白 Eop漂白

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