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science Bulletin 2024年第14期69卷 2221-2230页

作者：杨静李志斌伍莹沈勇张明陈彬袁国江肖松华冯建松张旭唐毓蔚丁孙安陈晓龙王太宏 department of Electrical and Electronic Engineering Southern University of Science and TechnologyShenzhen 518055China School of Microelectronics Southern University of Science and TechnologyShenzhen 518055China Key Laboratory for Micro/Nano Optoelectronic Devices of Ministry of Education Engineering Research Center of Advanced Semiconductor Technology and Application of Ministry of EducationChangsha Semiconductor Technology and Application Innovation Research InstituteCollege of Semiconductors(College of Integrated Circuits)Hunan UniversityChangsha 410082China School of Environmental and Chemical Engineering Yanshan UniversityQinhuangdao 066004China School of Integrated Circuits Nanjing UniversitySuzhou 215163China

Flexible pressure sensors with high sensitivity and linearity are highly desirable for robot sensing and human physiological signal ***,the current strategies for stabilizing axial microstructures(e.g.,micro-pyramids)are mainly susceptible to structural stiffening during compression,thereby limiting the realization of high sensitivity and ***,we report a bending-induced nonequilibrium compression process that effectively enhances the compressibility of microstructures,thereby crucially improving the efficiency of interfacial area growth of electric double layer(EDL).Based on this principle,we fabricate an iontronic flexible pressure sensor with vertical graphene(VG)array ***-high sensitivity(185.09 kPa^(-1))and linearity(R^(2.=0.9999)are realized over a wide pressure range(0.49 Pa–66.67 k Pa).It also exhibits remarkable mechanical stability during compression and *** sensor is successfully employed in a robotic gripping task to recognize the targets of different materials and shapes based on a multilayer perception(MLP)neural *** opens the door to realizing haptic sensing capabilities for robotic hands and prosthetic limbs.

关键词： Artificial mechanoreceptor Pressure sensor Vertical grapheme Ionic nanofiber Object recognition E-skin

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Multi-scale simulation of diffusion behavior of deterrent in propellant

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Chinese Journal of Chemical Engineering 2023年第2期54卷 29-35页

作者： Pan Huang Zekai Zhang Yuxin chen Changwei Liu yong Zhang cheng Lian Yajun ding Honglai Liu State Key Laboratory of Chemical Engineering Shanghai Engineering Research Center of Hierarchical NanomaterialsSchool of Chemical EngineeringEast China University of Science and TechnologyShanghai 200237China School of Chemistry and Molecular Engineering East China University of Science and TechnologyShanghai 200237China School of Chemistry and Chemical Engineering Nanjing University of Science and TechnologyNanjing 210094China

Concentration distribution of the deterrent in single-base propellant during the process of firing plays an important role in the ballistic properties of gun propellant in weapons. However, the diffusion coefficient calculated by molecular dynamics(MD) simulation is 6 orders of magnitude larger than the experimental values. Meanwhile, few simple and comprehensive theoretical models can explain the phenomenon and accurately predict the concentration distribution of the propellant. Herein, an onion model combining with MD simulation and finite element method of diffusion in propellants is introduced to bridge the gap between the experiments and simulations, and correctly predict the concentration distribution of deterrent. Furthermore, a new time scale is found to characterize the diffusion process. Finally, the time-and position-depended concentration distributions of dibutyl phthalate in nitrocellulose are measured by Raman spectroscopy to verify the correctness of the onion model. This work not only provides guidance for the design of the deterrent, but could be also extended to the diffusion of small molecules in polymer with different crystallinity.

关键词： Multi-scale simulation Diffusion Deterrent Propellant Onion model Molecular dynamics simulation

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High-resolution and large-size stretchable electrodes based on patterned silver nanowires composites

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Nano Research 2022年第5期15卷 4590-4598页

作者： yong Lin Qingsong Li chen {2. Jiayi Wang Wei Yuan Zhiyuan Liu Wenming Su Zheng Cui Printable Electronics Research Centre Suzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesSuzhou 215123China CAS Key Laboratory of Human-Machine Intelligence-Synergy Systems Shenzhen Institute of Advanced TechnologyChinese Academy of Sciences(CAS)Shenzhen 518055China School of Nano-Tech and Nano-Bionics University of Science and Technology of ChinaHefei 230026China

Electrodes based on composites of silver nanowires(AgNWs)and elastic polymers have been widely studied and applied in various stretchable electronic ***,due to the high aspect ratio of nanowires,the patterning of AgNW-based composite electrodes remains a huge challenge,especially for high-resolution complex circuit wiring on large-size elastic *** this paper,we propose a method for preparing large-size stretchable circuit boards with high-resolution electrodes by the combination of screen printing and vacuum filtration of AgNWs/polydimethylsiloxane(PDMS)*** as-prepared stretchable electrodes have smooth edges with patterning resolution up to-50 μ*** conductivity of the composite electrode can be precisely controlled by varying deposition densities of AgNWs and have reached to 1.07 x 10^(4) S/cm when the deposition density was 2.0 mg/cm^(2..In addition,the uniformity of conductivity and the resistance-strain characteristics of composite electrodes were systematically evaluated with different AgNWs deposition *** composite electrodes have been successfully employed to construct a large-size programmable display system and an 18-channel surface electromyography(EMG)recording,showing great potentials for some strain-insensitive stretchable circuits in wearable and health-related electronic applications.

关键词： AgNWs patterning silver nanowires AgNWs/PDMS composite stretchable circuit board high-density electrode array

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废旧晶体硅光伏组件EVA有氧热解动力学与产物特性

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化工学报 2024年第9期75卷 3310-3319页

作者：丁湧李文建陈昭宇曹立辉刘轩铭任强强胡松向军国能江西新能源产业有限公司江西南昌330029 国家能源集团江西电力有限公司江西南昌330077 华中科技大学煤燃烧与低碳利用全国重点实验室湖北武汉430074

资源化处理回收废旧晶体硅光伏组件迫在眉睫,而其关键在于乙烯-醋酸乙烯共聚物(EVA)薄膜的处理。面向EVA处理提出了有氧热解方法,展开有氧热解失重特性、动力学及产物特性分析,结果表明:随着氧气浓度的增加,最大失重速率从1.8%(质量分数... 详细信息

资源化处理回收废旧晶体硅光伏组件迫在眉睫,而其关键在于乙烯-醋酸乙烯共聚物(EVA)薄膜的处理。面向EVA处理提出了有氧热解方法,展开有氧热解失重特性、动力学及产物特性分析,结果表明:随着氧气浓度的增加,最大失重速率从1.8%(质量分数)/s增加到3.0%(质量分数)/s,EVA在较低温度下热分解更多且速率更快,整体有氧热解活化能呈现出下降的趋势。这是由于氧气的存在促进了氧化反应,加速了有氧热解过程。随着热解终温的升高,焦与油产率呈下降趋势,气产率则随之增加。在2.氧气浓度下,热解终温的提高有利于CH4、C2.6物质富集,有利于油中羧类物质转化为烷烃、烯烃及醇类,使得焦逐渐由非晶质结构朝芳香化与石墨化转变。

关键词：光伏组件 EVA 有氧热解氧气失重动力学产物

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G protein-coupled receptor kinase 2.inhibition improves erectile function through amelioration of endothelial dysfunction and oxidative stress in a rat model of type 2.diabetes

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Asian Journal of Andrology 2019年第1期21卷 74-79页

作者： Zhi-Hua Wan Yuan-Jie Zhang Lin chen yong-Lian Guo Guo-Hao Li {2. Wu yong Wang department of Urology The Central Hospital of WuhanTongll Medical CollegeHuazhong University of Science and TechnologyWuhan 430014China

Type 2.diabetes mellitus (T2.M)is a common cause of erectile dysfunction (ED).It has been demonstrated that G protein-coupled receptor kinase 2.(GRK2.overexpression contributes to diabetic endothelial dysfunction and oxidative stress,which also underlies ED in *** hypothesized that GRK2.overexpressed and attenuated endothelial function of the cavernosal tissue in a rat model of T2.M.T2.M rats were established by feeding with a high-fat diet (HFD)for 2.weeks and then administering two intraperitoneal (IP) injections of a low dose of streptozotocin (STZ),followed by continuous feeding with a HFD for 6 ***2.was inhibited by IP injection of paroxetine,a selective GRK2.inhibitor,after STZ *** challenge tests,intracavernous pressure (ICP), GRK2.expression,the protein kinase B (Akt)/endothelial nitric oxide synthase (eNOS)pathway,nicotinamide adenine dinucleotide phosphate (NADPH)oxidase subunit gp91phox,nitric oxide (NO),reactive oxygen species (ROS)production,and apoptosis in cavernosal tissue were *** response to insulin injection was observed in T2.M rats 2.weeks after *** increased GRK2.expression,along with impaired Akt/eNOS pathway,reduced NO production,increased gp91phox expression and ROS generation,increased apoptosis and impaired erectile function were found in T2.M *** of GRK2.with paroxetine ameliorated Akt/eNOS signaling,restored NO production,downregulated NADPH oxidase,subsequently inhibited ROS generation and apoptosis,and ultimately preserved erectile *** results indicated that GRK2.upregulation may be an important mechanism underlying T2.M ED,and GRK2.inhibition may be a potential therapeutic strategy for T2.M ED.

关键词： endothelial dysfunction erectile dysfunction G protein-coupled receptor kinase 2 oxidative stress type 2 diabetes mellitus

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杏鲍菇菌糠和植物乳杆菌对全株玉米青贮有氧稳定性和体外发酵特性的影响

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草地学报 2024年第2期32卷 646-653页

作者：武伟成肖定福陈一峰陈东温娟黄纯勇陈艳徐志雄魏仲珊刘一然湖南农业大学动物科学技术学院湖南长沙410128 湖南省畜牧兽医研究所湖南长沙410125 内蒙古林业和草原保护总站内蒙古呼和浩特010000 湘西国家农业科技园区管理委员会湖南湘西土家族苗族自治州416499 花垣县农业特色产业服务中心湖南湘西土家族苗族自治州416499 湖南德人草业科技发展有限公司湖南常德415000 湖南麻汝农产品销售有限公司湖南湘西土家族苗族自治州416499

试验旨在研究杏鲍菇菌糠和植物乳杆菌对全株玉米青贮有氧稳定性和体外发酵特性的影响。以玉米品种‘康农玉999’为青贮材料,添加杏鲍菇菌糠和植物乳杆菌混合青贮。青贮60 d后取样分析。对青贮前后发酵各组营养品质、发酵品质、有氧稳定... 详细信息

试验旨在研究杏鲍菇菌糠和植物乳杆菌对全株玉米青贮有氧稳定性和体外发酵特性的影响。以玉米品种‘康农玉999’为青贮材料,添加杏鲍菇菌糠和植物乳杆菌混合青贮。青贮60 d后取样分析。对青贮前后发酵各组营养品质、发酵品质、有氧稳定性和体外消化效果进行研究。结果表明:青贮后,混合青贮发酵营养品质、乙酸含量和有氧稳定性时间优于全株玉米单独青贮;体外发酵试验中,添加10%杏鲍菇菌糠+植物乳杆菌0.02.g·kg^(-1)组CP降解率显著提高。由此可见,在全株玉米青贮中添加杏鲍菇菌糠和植物乳杆菌提高了青贮品质和有氧稳定性,改善了体外发酵特性,提高了CP降解率。综合考虑,以90%全株玉米+10%杏鲍菇菌糠+植物乳杆菌0.02.g·kg^(-1)混合青贮时可获得较好的效果。

关键词：杏鲍菇菌糠植物乳杆菌全株玉米体外发酵有氧稳定性

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Characteristics of late cretaceous faults of the eastern segment of the northern Qaidam basin, NW china

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Mining science and technology 2009年第1期19卷 108-114页

作者： SHEN Zhong-yan XIAO An-chen chen Zhi-{2. ding Wei-xing chen Han-lin WANG Liang department of Earth sciences Zhejiang University Hangzhou Zhefiang 310027 China Research Center for Structures in Oil ＆ Gas Bearing Basins Ministry of Education Hangzhou Zhejiang 310027 China Qinghai Petroleum Company PetroChina Dunhuang Gangsu 736200 China Jiangsu Petroleum Exploration Bureau Yangzhou Jiangsu 225009 China

The Late Cretaceous tectonic upheaval was an important event during the evolution of the Qaidam Basin, resulting in the omission of the Upper Cretaceous in the whole basin and unconformities between the Paleogene sequence and pre-K2.strata. Inte-grating geological and geophysical data, two different groups of Late Cretaceous faults were recognized in the study area, one group consisting of E-W extending strike-slip faults (e.g., the Maxian and Yema-Jinan faults in the Mahai area, which caused an E-W omission zone of Mesozoic), while the other one has NW-SE thrust faults, resulting in NW-SE fold-and-thrust belts. Considering the different strikes and scale of these two groups, a simple-shear model has been employed to explain this structural phenomenon. The NW-SE thrust faults were thought to be subsidiary to the E-W strike-slip faults. Putting this into the framework of the Cretaceous paleogeographic environment of central Asia, it is inferred that this tectonic event of the Qaidam Basin is a response to the continuous northward drifting of the India plate.

关键词： northern Qaidam Basin Late Cretaceous simple-shear E-W strike-slip faults NW-SE thrust faults

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Signal characteristics of coal and rock dynamics with micro-seismic monitoring technique

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International Journal of Mining science and technology 2016年第4期26卷 683-690页

作者： ding Yanlu Dou Linming Cai Wu chen Jianjun Kong {2. Su Zhenguo Li Zhenlei State Key Laboratory of Coal Resources and Mine Safety China University of Mining and Technology department of Civil Engineering University of Hong Kong

In this study, differences of signal characteristics between mine shocks and coal and gas outbursts in coal mines were examined with the micro-seismic monitoring technique and time-frequency analysis. The duration of the mine shock is short while the coal and gas outburst lasts longer. The outburst consists of three stages： the pre-shock, secondary shock and main shock stage, respectively. The velocity amplitude of the mine shock is between 10 s and 10-3 m/s, which is higher than that of the outburst with the same energy level. In addition, in both cases, the correlation between the velocity amplitude and energy is positive while the correlation between the signal frequency band distribution and energy is negative. The signal frequency band of the high energy mine shock is distributed between 0 and 50 Hz, and the low energy mine shock is between 50 and 100 Hz. The fractal characteristics of mine shocks were studied based on a fractal theory. The box dimensions of high energy mine shocks are lower than the low energy ones, however, the box dimensions of outbursts are higher than that of mine shocks with the same energy level. The higher box dimensions indicate more dangerous dynamic events.

关键词： Mine shock Coal and gas outburst Micro-seismic signal Spectrum characteristics Fractal characteristics

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The beaming effect and γ-ray emission for Fermi blazars

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Research in Astronomy and Astrophysics 2016年第1期16卷 107-116页

作者： yong-Yun chen Xiong Zhang {2.-Rong Xiong Si-Ju Wang Xiao-Ling Yu department of Physics Yunnan Normal University Kunming 650500 China Yunnan Observatories Chinese Academy of Sciences Kunming 650011 China Dongxing Middle School Chuxiong 675000 China

We study the γ-ray luminosity and beaming effect for Fermi *** results are as follows.（i） There are significant correlations between γ-ray luminosity and radio core luminosity,and between γ-ray luminosity and R_v,which suggests that the γ-ray emissions have a strong beaming effect,（ⅱ） Using the L_（ext）/M_（abs） as an indicator of environment effects,we find that there is no significant correlation betweenγ-ray luminosity and L_（ext）/M_（abs） for all sources when we remove the effect of *** spectrum radio quasars considered alone also do not show a significant correlation,but BL Lacertae objects（BL Lacs） still show a significant correlation when we remove the effect of *** results suggest that the γ-ray emission may be affected by the environment on a kiloparsec scale for BL Lacs.

关键词： BL Lacerate objects: general -- quasars: general -- gamma-rays: galaxies -- radio continuumgalaxies

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Effects of Aphidius gifuensis on the feeding behavior and potato virus Y transmission ability of Myzus persicae

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Insect science 2018年第6期25卷 1025-1034页

作者： Ying-Qin He yong-Qiang Zhang Juan-Ni chen Wen-Long chen Xian-Yi Zeng Hai-Tao chen Wei ding College of Plant Protection Southwest UniversityChongqingChina Guizhou Key Laboratory of Plant Disease and Pest Management for Mountain Agriculture Institute of EntomologyGuizhou UniversityGuiyangChina Chongqing Institute of Tobacco science ChongqingChina

The stylet penetration behavior of aphids when feeding on plants is associated with virus acquisition and *** gifuensis (Ashmead)is a primary endoparasitoid of Myzuspersicae (Sulzer)which is the most efficient vector of plant viruses. Information about the effects ofparasitoid on aphid and virus transmission can provide an essential foundation for designing effective biological control *** study aimed to investigate the effects *** on the feeding behavior and potato virus Y (PVY) transmission ability of *** results showed that after *** was para-sitized by ***,the duration of the first probe significantly ***, *** exerted remarkable effects on aphid feeding in phloem *** contribution of the E1 waveform to the phloem phase was significantly higher in all parasitized aphids than in the control *** the time of infestation increased for parasitized aphids,the total duration of phloem sap ingestion ***,the percentage of time *** spent in the xylem and phloem phases only changed significantly on day *** percent transmission of PVY by the aphids parasitized on day 5 was lower than that in the control,but no significant differences were *** significance of this work is the demonstration that *** can impede the feeding behavior of ***,which sheds light on the biological basis *** as a natural enemy, but unfortunately does not provide an immediate solution for disrupting the transmission of PVY.

关键词： Braconidae electrical penetration graphs feedingbehavior Myzuspersicae parasitoids virus transmission

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