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High-areal-capacity/power lithium metal microbattery configuration based on the mechanically flexible,ultra-lightweight,nanocellulose framework

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Nano Research 2024年第9期17卷 8155-8162页

作者： Shaowen Li Ting Zhao Helin wang Zhiqiao wang Min zhang Ahu Shao Jiacheng Liu Zhaohui wang Yue ma State key laboratory of Solidification Processing Centre for Nano Energy MaterialsSchool of Materials Science and EngineeringNorthwestern Polytechnical UniversityXi'an 710072China College of materials Science and Engineering Hunan UniversityChangsha 410082China The Faculty of Printing Packaging Engineering and Digital Media TechnologyXi'an University of TechnologyXi'an 710048China

The ubiquitous implementation of integrated microelectronics requires the on-chip power sources featured with the lightweight configuration design,high areal-capacity-loadings as well as facile reaction kinetics that beyond the current available microbattery ***,this study constructs a mechanically flexible,nanocellulose fiber(NCF)reinforced microbattery configuration,which consists of metal-organic frameworks(ZIF-8)modified NCF as the separator(MOF@NCF),the carbonized MOF@NCF as the metallic deposition substrate(c-MOF@NCF)as well as gradient-structured LiFePO4 particles infiltrated in the NCF matrix(LFP@NCF)as the *** film-stacked,integrated NCF-based microbattery prototype not only achieves the facile reaction kinetics with homogenized,dendrite-free Li metal deposition at high-capacity-loadings(2 mah·cm^(-2)),but also eliminates the necessary use of metallic current collector to maximize the electroactive mass ratio,which therefore enables the high energy density of 6.8 mWh·cm^(-2)at the power output of 1.36 mW·cm^(-2)as well as the robust cyclability upon various geometric flexing *** study presents a quantum leap towards the facile reaction kinetics and multi-scale interfacial stability for the flexible microbattery construction that based on the sustainable utilization of bio-scaffolds.

关键词： nanocellulose microbattery mechanical flexible ultra-lightweight high-areal-capacity

Angular distribution of terahertz emission from laser interactions with solid targets

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Science china(Information Sciences) 2012年第1期55卷 43-48页

作者： DU Fei1,LI Chun1,ZHOU MuLin1,wang WeiMin1,SU luNing1,ZHENG yi1,GE XuLei1,LI YuTong1,ma JingLong1,LIU XiaoLong1,zhang lu1,SHENG ZhengMing1,2,CHEN LiMing1,lu Xin1,DONG QuanLi1,wang ZhaoHua1,WEI Zhiyi1&zhang Jie1,21Beijing National laboratory of Condensed matter Physics,Institute of Physics,Chinese Academy of Sciences,Beijing 100190,china 2key laboratory for Laser Plasmas(Ministry of Education)and Department of Physics,Shanghai Jiao Tong university,Shanghai 200240,china 1. Beijing National laboratory of Condensed matter Physics Institute of Physics Chinese Academy of Sciences Beijing 100190 China2. Key Laboratory for Laser Plasmas (Ministry of Education) and Department of Physics Shanghai Jiao Tong University Shanghai 200240 China

Intense femtosecond laser-plasma interactions can produce high power terahertz *** our experiment,the polished copper target was irradiated by a p-polarized laser with intensity of more than 1018 W/cm2 at an incident angle of 67.5 from the target *** THz energy from three dierent detection angles is *** maximum emission is found in the direction at an angle of 45 to the laser backward direction,which is more than one order of magnitude higher than in the other two directions.A simple theoretical model has been established to explain the measurements.

关键词： terahertz emission laser solid interactions angular distribution

Regulating metal-acid double site balance on mesoporous SiO2-Al2O3 composite oxide for supercritical n-decane cracking

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Petroleum Science 2024年第4期21卷 2881-2891页

作者： Liu-Ling Chen Jun zhang Chun-Guang Li Li-Qun Fei Bo wang Chen-Qi zhang yi Jiao Jian-Li wang Institute of New Energy and Low-Carbon Technology Sichuan University Engineering Research Center of Combustion and Cooling for Aerospace Power Ministry of Education School of Chemical Engineering Sichuan University State key laboratory of Industrial Vent Gas Reuse Southwest Institute of Chemical Co. Ltd Science and Technology on Scramjet laboratory Beijing Power Machinery Research Institute

The balance between metal and acid sites directly affects the preparation of high-performance cracking catalysts with high heat sink and low ***,how to control acid-metal sites balance and its relationship with cracking performance are reported *** this work,a series of Pt/Al2O3-SiO2dual sites catalysts with different metal to acid active sites ratio(CM/CSA) were constructed by ethanolassisted impregnation method and the impact on n-decane cracking under supercritical conditions was systematically and deeply *** results showed that the conversion and carbon deposition increased gradually with varied CM/CSAand reached the balance at CM/CSAof *** proper ratio CM/CSA（0.13） can balance the deep dehydrogenation coking over metal active sites and high heat sink of cracking over acid active sites,the chemical heat sink reaches amazing 1.75 MJ/kg and carbon deposition is only22.03 mg/cm2at 750℃.Meanwhile,the few metal sites at low CM/CSAand the few strong acid sites at high CM/CSAare the main factors limiting the cracking *** CM/CSAlimit the activation of C-H bond and deep dehydrogenation of coking precursor,resulting in relative low cracking activity and carbon deposition,while high CM/CSAlimit the activation of C-C bond and increase the deep *** this contribution,design and construction of metal-acid dual sites can not only provide the technical solution for the preparation of high heat sink and low coking cracking catalyst,but also deepen the understanding of the cracking path of hydrocarbon fuel.

关键词： Metal-acid dual sites balance Catalytic cracking Hydrocarbon fuels Chemical heat sink Carbon deposition

Cardiac Piezo1 Exacerbates Lethal Ventricular Arrhythmogenesis by Linking Mechanical Stress with Ca^(2+) Handling After Myocardial Infarction

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Research 2024年第1期2023卷 583-594页

作者： Sheng-an Su Yuhao zhang Wudi Li Yutao Xi Yunrui lu Jian Shen Yuankun ma Yaping wang yimin Shen Lan Xie Hong ma Yao Xie Meixiang Xiang Department of Cardiology Cardiovascular Key Laboratory of Zhejiang ProvinceThe Second Affiliated HospitalZhejiang University School of MedicineHangzhou 310009China Department of Endocrinology The Second Affiliated HospitalZhejiang University School of MedicineHangzhou 310009China Texas Heart Institute HoustonTX 77030USA

Ventricular arrhythmogenesis is a key cause of sudden cardiac death following myocardial infarction(MI).Accumulating data show that ischemia,sympathetic activation,and inflammation contribute to ***,the role and mechanisms of abnormal mechanical stress in ventricular arrhythmia following MI remain *** aimed to examine the impact of increased mechanical stress and identify the role of the key sensor Piezo1 in ventricular arrhythmogenesis in *** with increased ventricular pressure,Piezo1,as a newly recognized mechano-sensitive cation channel,was the most up-regulated mechanosensor in the myocardium of patients with advanced heart ***1 was mainly located at the intercalated discs and T-tubules of cardiomyocytes,which are responsible for intracellular calcium homeostasis and intercellular communication.

关键词： ventricular homeostasis Ventricular

construction and application of formal ontology for mine

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中国有色金属学会会刊：英文版 2011年第S3期21卷 577-582页

作者： CHENG Gang 1, 2, zhang yin-ling1, 2, wang Fei 1 ,2, zhang Zhen-hui 3, GUO Yu-xiang1, 2 1. key laboratory of Mine Spatial Information Technologies of State Bureau of Surveying and mapping, Henan Polytechnic university, Jiaozuo 454003, china 2. School of Surveying and land Information Engineering, Henan Polytechnic university, Jiaozuo 454003, china 3. Qingdao Branch of Naval Aeronautical Engineering Institute, Qingdao 266041, china Henan Polytech Univ Key Lab Mine Spatial Informat Technol State Bur Surveying & Mapping Jiaozuo 454003 Peoples R China Henan Polytech Univ Sch Surveying & Land Informat Engn Jiaozuo 454003 Peoples R China Naval Aeronaut Engn Inst Qingdao Branch Qingdao 266041 Peoples R China

Digital mine is the only way for the development of mining industry in china. Due to lack of appropriate standards and norms, and different awareness in the field of digital mine among academia and industry insiders, the meaning for digital mine is still unclear. Starting from the nature of mining and removing of views of specialized fields, this paper constructs formal ontology for digital mine and proposes the four levels for it. The ontology clarifies the concept world for digital mine, defines the meaning of concepts and relations clearly, provides a reference for the standard construction for digital mine and provides a unified semantic framework for the integration of heterogeneous mine data. Meanwhile, it can provide formal reasoning knowledge for expert system of digital mine and improve the intelligence and automation while the machine automatically interpreting and processing mine spatial data.

关键词： Digital mine formalization ontology concept world semantic share

Characteristics of proppant transport and placement within rough hydraulic fractures

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Petroleum Exploration and Development 2024年第2期51卷 453-463页

作者： HUANG Hai ZHENG Yong wang yi wang Haizhu NI Jun wang Bin YANG Bing zhang Wentong School of Petroleum Engineering Xi’an Shiyou UniversityXi’an 710065China Shaanxi key laboratory of Carbon Dioxide Sequestration and Enhanced Oil Recovery Xi’an 710075China Shaanxi Provincial key laboratory of Oil and Gas Well and Reservoir Seepage and Rock Mechanics Xi’an 710065China Oil&Gas Field Production construction Division PetroChina Tarim Oilfield CompanyKorla 841000China National key laboratory of Petroleum Resources and Engineering China University of Petroleum(Beijing)Beijing 102249China Shaanxi Yanchang Petroleum(Group)Co. Ltd.Xi’an 710075China

A three-dimensional reconstruction of rough fracture surfaces of hydraulically fractured rock outcrops is carried out by casting process,a large-scale experimental setup for visualizing rough fractures is built to perform proppant transport *** typical characteristics of proppant transport and placement in rough fractures and its intrinsic mechanisms are investigated,and the influences of fracture inclination,fracture width and fracturing fluid viscosity on proppant transport and placement in rough fractures are *** results show that the rough fractures cause variations in the shape of the flow channel and the fluid flow pattern,resulting in the bridging buildup during proppant transport to form unfilled zone,the emergence of multiple complex flow patterns such as channeling,reverse flow and bypassing of sand-carrying fluid,and the influence on the stability of the sand *** proppant has a higher placement rate in inclined rough fractures,with a maximum increase of 22.16 percentage points in the experiments compared to vertical fractures,but exhibits poor stability of the sand *** fracture width aggravates the bridging of proppant and induces higher pumping *** the viscosity of the fracturing fluid can weaken the proppant bridging phenomenon caused by the rough fractures.

关键词： reservoir fracturing rough fracture proppant transport and placement characteristics bridging buildup

Regulation effects of water and nitrogen on yield,water,and nitrogen use efficiency of wolfberry

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Journal of Arid Land 2024年第1期16卷 29-45页

作者： GAO Yalin QI Guangping ma Yanlin yiN Minhua wang Jinghai wang Chen TIAN Rongrong XIAO Feng lu Qiang wang Jianjun College of Water Conservancy and Hydropower Engineering Gansu Agricultural UniversityLanzhou 730070China Jingtaichuan Electric Power Irrigation Water Resource Utilization Center in Gansu Province Baiyin 730900China

Wolfberry(Lycium barbarum L.)is important for health care and ecological ***,it faces problems of low productivity and resource utilization during *** reasonable models for water and nitrogen management is important for solving these *** on field trials in 2021 and 2022,this study analyzed the effects of controlling soil water and nitrogen application levels on wolfberry height,stem diameter,crown width,yield,and water(WUE)and nitrogen use efficiency(NUE).The upper and lower limits of soil water were controlled by the percentage of soil water content to field water capacity(θ_(f)),and four water levels,i.e.,adequate irrigation(W0,75%-85%θ_(f)),mild water deficit(W1,65%-75%θ_(f)),moderate water deficit(W2,55%-65%θ_(f)),and severe water deficit(W3,45%-55%θ_(f))were used,and three nitrogen application levels,i.e.,no nitrogen(N0,0 kg/hm^(2)),low nitrogen(N1,150 kg/hm^(2)),medium nitrogen(N2,300 kg/hm^(2)),and high nitrogen(N3,450 kg/hm^(2))were *** results showed that irrigation and nitrogen application significantly affected plant height,stem diameter,and crown width of wolfberry at different growth stages(Pmaximum values were observed in W1N2,W0N2,and W1N3 *** weight per plant and yield of wolfberry first increased and then decreased with increasing nitrogen application under the same water *** weight per hundred grains and dry weight percentage increased with increasing nitrogen application under W0 ***,under other water treatments,the values first increased and then decreased with increasing nitrogen *** and its component of wolfberry first increased and then decreased as water deficit increased under the same nitrogen *** water use efficiency(IWUE,8.46 kg/(hm^(2)·mm)),WUE(6.83 kg/(hm^(2)·mm)),partial factor productivity of nitrogen(PFPN,2.56 kg/kg),and NUE(14.29 kg/kg)reached their highest values in W2N2,W1N2,W1N2,and W1N1 treatments.R

关键词： water deficit growth characteristics yield water and nitrogen use efficiency principal component analysis

Photoluminescence of fullerene in ultrathin orderedmultilayers: The dissociation of molecular aggregation

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Chinese Science Bulletin 1998年第12期43卷 1004-1008页

作者： ma Shihong+1, lu Xingze+1, XU Jianhua+1, CAI Zhigang+2,ZHOU Jianying+2, wang Wencheng+1, zhang Zhiming+1 1. State key Joint laboratory for materials Modification by Laser, Ion and Electron Beams, Department of Physics, Fudan university, Shanghai 200433, State key Jt. Lab. mat. M. Department of Physics Fudan University Shanghai 200433 China Ultrafast Laser Spectrosc. Lab. Zhongshan University Guangzhou 510275 China

The aggregation behavior of a substituted fullerene compound, 1benzyl2hydrofullerene （C 60-Be）, in Ztype ultrathin ordered （e.g. LB） multilayers has been studied by UVvis absorption, steady state and timeresolved fluorescence spectroscopies. The LB multilayers of pure C 60Be showed Jaggregate formation, characterized by a large redshift of two absorption peaks （ΔE～2 098 cm -1 from 260→275 nm and ΔE～1 076 cm -1 from 328→340 nm, respectively）. The main fluorescence emission bands were found at 710, 646, 603, 600 and 595 nm for pure C 60-Be, mixed C 60-Be （molar percentage 50%, 25% and 20%, respectively） multilayers and monomeric C 60-Be in solution, respectively. The aggregates were dissociated by mixing with some inert materials. The fluorescence decay profiles of C 60-Be, mixed C 60-Be （molar percentage 50%, 25% and 20%, respectively） in LB films could be bestfitted by using a biexponential decay model.

关键词： fallerene molecular aggregation utrathin ordered multilayer time_resolved fluorescence.

A Novel Anti-Collision Algorithm for Large Scale of UHF RFID Tags Access Systems

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Computers, materials & Continua 2024年第7期80卷 897-912页

作者： Xu zhang yi He Haiwen yi Yulu zhang Yuan Li Shuai ma Gui Li Zhiyuan Zhao Yue Liu Junyang Liu Guangjun Wen Jian Li School of Information and Communication Engineering/yibin Institute University of Electronic Science and Technology of ChinaChengdu611731China Department of IoT Technology Research China Mobile Research InstituteBeijing100053China The 10th Research Institute of china Electronics Technology Group Corporation Chengdu611731China College of Information and Communication National University of Defense TechnologyWuhan430019China

When the radio frequency identification(RFID)system inventories multiple tags,the recognition rate will be seriously affected due to *** on the existing dynamic frame slotted Aloha(DFSA)algorithm,a sub-frame observation and cyclic redundancy check(CRC)grouping combined dynamic framed slotted Aloha(SUBF-CGDFSA)algorithm is *** algorithm combines the precise estimation method of the quantity of large-scale tags,the large-scale tags grouping mechanism based on CRC pseudo-randomcharacteristics,and the Aloha anti-collision optimization mechanism based on sub-frame *** grouping tags and sequentially identifying themwithin subframes,it accurately estimates the number of remaining tags and optimizes frame length accordingly to improve efficiency in large-scale RFID *** outcomes demonstrate that this proposed algorithmcan effectively break through the system throughput bottleneck of 36.8%,which is up to 30%higher than the existing DFSA standard scheme,and has more significant advantages,which is suitable for application in largescale RFID tags scenarios.

关键词： Radio frequency identification anti-collision tags grouping dynamic framed slotted Aloha