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Fully sprayed MXene-based high-performance flexible piezoresistive sensor for image recognition

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Nano Materials Science 2024年第1期6卷 77-85页

作者： Zhi-Dong Zhang xue-feng zhao Qing-Chao Zhang Jie Liang Hui-Nan Zhang Tian-Sheng Zhang Chen-Yang xue Key Laboratory of Instrumentation Science&Dynamic Measurement of Ministry of Education North University of ChinaTaiyuan030051People's Republic of China State Key Laboratory of ASIC and System Shanghai Institute of Intelligent Electronics&SystemsSchool of MicroelectronicsFudan UniversityShanghai200433People's Republic of China Shanxi Hosipital of Acupuncture and Moxibustion Taiyuan030006People's Republic of China

High-performance flexible pressure sensors provide comprehensive tactile perception and are applied in human activity monitoring,soft robotics,medical treatment,and human-computer ***,these flexible pressure sensors require extensive nano-architectural design and complicated manufacturing and are ***,a highly sensitive,flexible piezoresistive tactile sensor is designed and fabricated,consisting of three main parts:the randomly distributed microstructure on T-ZnOw/PDMS film as a top substrate,multilayer Ti_(3)C_(2)-MXene film as an intermediate conductive filler,and the few-layer Ti_(3)C_(2)-MXene nanosheetbased interdigital electrodes as the bottom *** MXene-based piezoresistive sensor with randomly distributed microstructure exhibits a high sensitivity over a broad pressure range(less than 10 kPa for 175 kPa^(-1))and possesses an out-standing permanence of up to 5000 ***,a 16-pixel sensor array is designed,and its potential applications in visualizing pressure distribution and an example of tactile feedback are *** fully sprayed MXene-based pressure sensor,with high sensitivity and excellent durability,can be widely used in,electronic skin,intelligent robots,and many other emerging technologies.

关键词： Piezoresistive sensor Ti_(3)C_(2)-MXene T-ZnOw/PDMS film Randomly distributed microstructure

Mechanical performance of 22SiMn2TiB steel welded with lowtransformation- temperature filler wire and stainless steel filler wire

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Journal of Iron and Steel Research International 2024年第4期31卷 967-981页

作者： Zi-dong Lin Kai-jie Song Zhen Sun Zi-qian Zhu xue-feng zhao Constantinos Goulas Wei Ya Xing-hua Yu School of Materials Science and Engineering Beijing Institute of TechnologyBeijing 100081China Beijing Institute of Technology Chongqing Innovation Center Chongqing 401120China Department of Design Production and Management Faculty of Engineering Technology.University of TwenteEnschede 7500 AETheNetherlands Rotterdam Additive Manufacture Fieldlab(RAMLAB) Rotterdam 3089 JWTheNetherlands

TX-80 low-transformation-temperature(LTT)welding wire was used to replace the traditional ER 307Si welding wire to realize the connection of 22SiMn2TiB armor steel in manual overlay *** previously existing issues,such as welding cracks,large welding deformation,and severe welding residual stress,were solved to ensure good strength and ductility *** particular,with the same welding conditions,TX-80 LTT wire eliminates welding *** reduces the welding deformation no matter the base pretreatment of pre-setting angle or no pre-setting *** comparison,it was found that the microstructure at the TX-80 weld is mainly composed of martensite and a small amount of retained *** contrast,the microstructure of the ER 307Si weld consists of a large amount of austenite and a small amount of skeleton-like *** variation trend of residual stress and microhardness from the weld to the base were investigated and compared with the mechanical properties of base *** TX-80 and the ER 307Si tensile samples elongation is 6.76%and 6.01%,while the ultimate tensile strengths are 877 and 667 MPa,*** average impact toughness at room temperature of the ER 307Si weld is 143.9 J/cm^(2),much higher than that of the TX-80 weld,which is only 36.7 J/cm^(2).The relationship between impact and tensile properties with microstructure species and distribution was *** addition,the fracture surface of the tensile and the impact samples was observed and *** dimples,fewer pores,larger radiation zone,and shear lips of TX-80 samples indicate better tensile ductility and worse impact toughness than those of ER 307Si weld.

关键词： Low-transformation-temperature material 22SiMn2TiB steel Welding deformation Residual stress Martensitic transformation Mechanical property

Evaluation of Thermal Hazard of Composite Modified Double-base Propellant by Microcalorimetery Method

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Chemical Research in Chinese Universities 2010年第4期26卷 626-629页

作者： xue Liang zhao feng-qi XING Xiao-ling XU Si-yu PEI Qing GAO Yin HU Rong-zu Xi ＇an Modern Chemistry Research Institute Xi ＇an 710065 P. R. China

The thermal decomposition behavior of composite modified double-base（CMDB） propellant containing cyclotrimethylene trinitramine（RDX） was studied via a Calvet microcalorimeter at five different heating rates. The activation energy（E） and the pre-exponential factor（A） of two obvious exothermic processes were obtained by Kissinger＇s method and Ozawa＇s method. The entropy of activation（△S^≠）, the enthalpy of activation（△H^≠）, and the free energy of activation（△G^≠） of the first stage were calculated. To evaluate the thermal hazard of the RDX-CMDB propellant, the critical temperature of thermal explosion（Tb）, the self acceleration decomposition temperature（Tsgox）, the adiabatic decomposition temperature increment（ATad） and the time-to-explosion of adiabatic system（t） were presented as 145.3 ℃, 138.15 ℃, 1634 K and 583.71 s（n=0） and 586.28 s（n=1）, respectively.

关键词： CMDB propellant Microcalorimeter Critical temperature of thermal explosion SADT Adiabatic time-to-explosion

Study on the basic nitrogen compounds from coal-derived oil

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Journal of Coal Science & Engineering(China) 2013年第1期19卷 83-89页

作者： Xiao-hui GU xue-feng MAO Yuan zhao Wen-bo LI Xiao-jing ZHANG State Key Laboratory of Coal Mining and Clean Utilization Beijing Research Institute of Coal Chemistry China CoalResearch Institute Beijing 100013 China

The distillation range analysis and elemental analysis of fractioned direct liquefied oil were conducted. Each fraction of liquefied oil contains some nitrogen compounds. Using the acid extraction method and gas chromatography/mass spectrometry （GC-MS）, the basic nitrogen compounds have been separated and identified. Compared with the nitrogen content of the liquefied oil before and after separation, the basic nitrogen compounds account for more than half of all nitrogen compounds. The basic nitrogen compounds in the light liquefied oil are easily separated, and contain more types of basic nitrogen compounds. The results also show that there are many basic nitrogen compounds in liquefied oil, such as pyrrole, aniline, pyridine, quinoline and so on. However, there are fewer other types of basic nitrogen compounds.

关键词： liquefied oil separation GC-MS nitrogen compounds coal-derived oil

Comparative analysis of two digestive tract reconstruction methods in total laparoscopic radical total gastrectomy

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World Journal of Gastrointestinal Surgery 2024年第4期16卷 1109-1120页

作者： Tian-Xiang Dong Dong Wang Qun zhao Zhi-Dong Zhang xue-feng zhao Bi-Bo Tan Yu Liu Qing-Wei Liu Pei-Gang Yang Ping-An Ding Tao Zheng Yong Li Zi-Jing Liu Third Department of Surgery of the Fourth Hospital of Hebei Medical University Hebei Key Laboratory of Precision Diagnosis and Comprehensive Treatment of Gastric CancerShijiazhuang 050011Hebei ProvinceChina

BACKGROUND The incidence of gastric cancer has significantly increased in recent *** resection is the main treatment,but the method of digestive tract reconstruction after gastric cancer surgery remains *** the current study,we sought to explore a reasonable method of digestive tract reconstruction and improve the quality of life and nutritional status of patients after *** this end,we statistically analyzed the clinical results of patients with gastric cancer who underwent jejunal interposition double-tract reconstruction(DTR)and esophageal jejunum Roux-en-Y reconstruction(RY).AIM To explore the application effect of DTR in total laparoscopic radical total gastrectomy(TLTG)and evaluate its safety and *** We collected the relevant data of 77 patients who underwent TLTG at the Fourth Hospital of Hebei Medical University from October 2021 to January *** them,35 cases were treated with DTR,and the remaining 42 cases were treated with traditional *** 1:1 propensity score matching,the cases were grouped into 31 cases per group,with evenly distributed *** clinical characteristics and short-and long-term clinical outcomes of the two groups were statistically *** The two groups showed no significant differences in basic data,intraoperative blood loss,number of lymph node dissections,first defecation time after operation,postoperative hospital stay,postoperative complications,and laboratory examination results on the 1st,3rd,and 5th days after *** operation time of the DTR group was longer than that of the RY group[(307.58±65.14)min vs(272.45±62.09)min,P=0.016],but the first intake of liquid food in the DTR group was shorter than that in the RY group[(4.45±1.18)d vs(6.0±5.18)d,P=0.028].The incidence of reflux heartburn(Visick grade)and postoperative gallbladder disease in the DTR group was lower than that in the RY group(P=0.033 and P=0.038).Although there was no significant difference in bod

关键词： Gastric cancer Jejunal interposition double-tract reconstruction Roux-en-Y reconstruction Laparoscope

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线性离散状态时滞系统UFIR滤波算法

控制与决策 2017年第6期32卷 1109-1114页

作者：刘飞范雪峰赵顺毅江南大学自动化研究所江苏无锡214122 江南大学轻工过程先进控制教育部重点实验室江苏无锡214122

针对含状态时滞的线性离散时变状态空间模型,提出一类无偏有限脉冲响应(UFIR)滤波算法.通过构造含有时滞状态的增广系统模型,对原系统进行无时滞转换.利用扩展状态空间模型的思路,将现有UFIR滤波算法推广至含控制输入的状态时滞系统中,... 详细信息

针对含状态时滞的线性离散时变状态空间模型,提出一类无偏有限脉冲响应(UFIR)滤波算法.通过构造含有时滞状态的增广系统模型,对原系统进行无时滞转换.利用扩展状态空间模型的思路,将现有UFIR滤波算法推广至含控制输入的状态时滞系统中,并进一步求解相应的迭代形式,保留类Kalman算法快速计算的特点.通过仿真例子表明了所提出算法的有效性.

关键词：状态时滞增广状态状态估计 FIR滤波器

Annexin A2 is implicated in multi-drug-resistance in gastric cancer through p38MAPK and AKT pathway

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Annexin A2 is implicated in multi-drug-resistance in gastric...

Understanding the local structure and thermophysical behavior of Mg-La liquid alloys via machine learning potential

第八届中国肿瘤学术大会暨第十三届海峡两岸肿瘤学术会议

作者： ZHI-DONG ZHANG YONG LI LI-QIAO FAN QUN zhao BI-BO TAN xue-feng zhao Department of General Surgery the Fourth Affiliated HospitalHebei Medical University

＜正＞Objective Studies have shown that Annexin A2（ANXA2）is related with tumor proliferation,apoptosis,and differentiation,invasion,migration,and drug *** purpose of this study was to investigate the role and its me...

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 439-449页

作者： Jia zhao Taixi feng Guimin Lu National Engineering Research Center for Integrated Utilization of Salt Lake Resource East China University of Science and TechnologyShanghai 200237China Joint International Laboratory for Potassium and Lithium Strategic Resources East China University of Science and TechnologyShanghai 200237China

The local structure and thermophysical behavior of Mg-La liquid alloys were in-depth understood using deep potential molecular dynamic(DPMD) simulation driven via machine learning to promote the development of Mg-La alloys. The robustness of the trained deep potential(DP) model was thoroughly evaluated through several aspects, including root-mean-square errors(RMSEs), energy and force data, and structural information comparison results;the results indicate the carefully trained DP model is reliable. The component and temperature dependence of the local structure in the Mg-La liquid alloy was analyzed. The effect of Mg content in the system on the first coordination shell of the atomic pairs is the same as that of temperature. The pre-peak demonstrated in the structure factor indicates the presence of a medium-range ordered structure in the Mg-La liquid alloy, which is particularly pronounced in the 80at% Mg system and disappears at elevated temperatures. The density, self-diffusion coefficient, and shear viscosity for the Mg-La liquid alloy were predicted via DPMD simulation, the evolution patterns with Mg content and temperature were subsequently discussed, and a database was established accordingly. Finally, the mixing enthalpy and elemental activity of the Mg-La liquid alloy at 1200 K were reliably evaluated,which provides new guidance for related studies.

关键词： magnesium-lanthanum liquid alloys local structure macroscopic properties thermodynamic behavior deep potential mo-lecular dynamic simulation

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1-MCP对板栗采后生理的影响

食品研究与开发 2016年第10期37卷 195-198页

作者：费斐薛风照海军医学研究所上海200433

以采自河南信阳的板栗为试材,进行1-MCP(1-甲基环丙烯)处理,于0℃低温下贮藏,通过测定失重率、腐烂率和VC等指标,旨在研究其对板栗采后生理的影响。得到试验结果:1.0μL/L 1-MCP处理可有效抑制板栗失重、VC和还原糖含量的下降,推迟果实... 详细信息

以采自河南信阳的板栗为试材,进行1-MCP(1-甲基环丙烯)处理,于0℃低温下贮藏,通过测定失重率、腐烂率和VC等指标,旨在研究其对板栗采后生理的影响。得到试验结果:1.0μL/L 1-MCP处理可有效抑制板栗失重、VC和还原糖含量的下降,推迟果实的后熟与衰老。0℃贮藏75 d以后,好果率达86.6%,且外观色泽饱满,风味正常。

关键词：板栗 1-MCP 采后生理保鲜