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Non-contact real-time detection of trace nitro-explosives by MOF composites visible-light chemiresistor

National Science Review 2022年第10期9卷 188-195页

作者： Wei-hua deng Ming-Shui Yao Min-Yi Zhang Masahiko Tsujimoto Kenichi Otake Bo Wang Chun-Sen Li Gang Xu Susumu Kitagawa State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences University of Chinese Academy of Sciences Chinese Academy of Sciences Institute for Integrated Cell-Material Sciences (WPI-i Ce MS) Kyoto University Institute for Advanced Study Kyoto University Institute for Integrated Cell-Material Sciences (WPI-iCeMS) Kyoto University Institute for Advanced Study Kyoto University Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials Key Laboratory of Cluster Science Ministry of Education School of Chemistry and Chemical Engineering Beijing Institute of Technology Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China

To create an artificial structure to remarkably surpass the sensitivity,selectivity and speed of the olfaction system of animals is still a daunting ***,we propose a core-sheath pillar(CSP) architecture with a perfect synergistic interface that effectively integrates the advantages of metal-organic frameworks and metal oxides to tackle the above-mentioned *** sheath material,NH2-MIL-125,can concentrate target analyte,nitro-explosives,by 1012 times from its *** perfect band-matched synergistic interface enables the TiO2core to effectively harvest and utilize visible *** room temperature and under visible light,CSP(TiO2,NH2-MIL-125) shows an unexpected self-promoting analyte-sensing *** experimentally reached limit of detection(～0.8 ppq,hexogeon) is 103 times lower than the lowest one achieved by a sniffer dog or all sensing techniques without analyte ***,the sensor exhibits excellent selectivity against commonly existing interferences,with a short response time of 0.14 min.

关键词： MOFs metal oxides electrical devices thin films gas sensors

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Measurement of CO,HCN,and NO productions in atmospheric reaction induced by femtosecond laser filament

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Chinese Physics B 2022年第9期31卷 152-156页

作者： Xiao-Dong huang Meng Zhang Lun-hua deng Shan-Biao Pang Ke Liu huai-Liang Xu State Key Laboratory of Precision Spectroscopy East China Normal University(ECNU)Shanghai 200062China State Key Laboratory of Integrated Optoelectronics College of Electronic Science and EngineeringJilin UniversityChangchun 130012China Chinese Academy of Sciences Center for Excellence in Ultra-Intense Laser Science Shanghai 201800China

It is proved that the chemical reaction induced by femtosecond laser filament in the atmosphere produces CO,HCN,and NO,and the production CO and HCN are observed for the first *** concentrations of the products are measured by mid-infrared tunable laser absorption *** the reduced pressure air,the decomposition of CO_(2) is enhanced by vibration excitation induced by laser filament,resulting in the enhanced production of CO and *** the same time,the CO and HCN generated from the atmosphere suffer rotation excitation induced by laser filament,enhancing their absorption *** is found that NO,CO,and HCN accumulate to 134 ppm,80 ppm,and 1.6 ppm in sealed air after sufficient reaction *** atmospheric chemical reaction induced by laser filament opens the way to changing the air composition while maintaining environmental benefits.

关键词： femtosecond laser flament atmospheric reaction CO HCN NO

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A giant adult paratesticular rhabdomyosarcomar

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Asian Journal of Andrology 2017年第3期19卷 382-383页

作者： Xu Chen Xiang-Zhou Sun Wen-Lin Xie Qiang-Sheng Dai Shan Hu Chun-hua deng Department of Urology The First Affiliated Hospital of Sun Yat-Sen University Guangzhou 510080 China Department of Pathology The First Affiliated Hospita of Sun Yat-Sen University Guangzhou 510080 China Department of Oncology The First Affiliated HosDital of SLm Yat-Sen University Guangzhou 510080 China Department of Radiology Guangdong Academy of Medical Sciences Guangdong General Hospital Guangzhou 510000 China.

Dear Editor, Rhabdomyosarcoma （RMS） is a rare malignant neoplasm that can involve the bladder, prostate, vagina, or paratesticular area. 2he peak incidence ofparatesticular RMS occurs at 2-5 years of age. Herein, we report a case of adult paratesticular RMS that is relatively uncommon. A 20-year-old man presented with a mass in the left scrotum that had been progressively growing over a period of 1 month. 3he patient had found a pea-size neoplasm in the scrotum during bathing 1 month previously. Subsequently, it grew quickly in the scrotum without causing pain and fever. The physical examination resulted in the detection of a soft mass with mild tenderness in the left scrotum.

关键词： INTERGROUP RHABDOMYOSARCOMA

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Application of modified discontinuous deformation analysis to dynamic modelling of the Baige landslide in the Jinsha River

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Journal of Mountain Science 2024年第7期21卷 2305-2319页

作者： XIE Chenxi deng Jianhui PENG Xinyan YANG Zhongkang ZHAO Siyuan LI hua State Key Laboratory of Hydraulics and Mountain River Engineering College of Water Resource and HydropowerSichuan UniversityChengdu 610031China State Key Laboratory of Geohazard Prevention and Geoenvironment Protection Chengdu University of TechnologyChengdu 610051China MOE Key Laboratory of Deep Earth Science and Engineering Institute for Disaster Management and ReconstructionSichuan UniversityChengdu 610031China Power China Chengdu Engineering Corporation Limited Chengdu 610031China

Accurate dynamic modeling of landslides could help understand the movement mechanisms and guide disaster mitigation and *** deformation analysis(DDA)is an effective approach for investigating ***,DDA fails to accurately capture the degradation in shear strength of rock joints commonly observed in high-speed *** this study,DDA is modified by incorporating simplified joint shear strength *** on the modified DDA,the kinematics of the Baige landslide that occurred along the Jinsha River in China on 10 October 2018 are *** violent starting velocity of the landslide is considered *** cases with different violent starting velocities are investigated to show their effect on the landslide movement ***,the landslide movement process and the final accumulation characteristics are analyzed from multiple *** results show that the violent starting velocity affects the landslide motion characteristics,which is found to be about 4 m/s in the Baige *** movement process of the Baige landslide involves four stages:initiation,high-speed sliding,impact-climbing,low-speed motion and *** accumulation states of sliding masses in different zones are different,which essentially corresponds to *** research results suggest that the modified DDA is applicable to similar high-level rock landslides.

关键词： Discontinuous deformation analysis(DDA) Baige landslide Violent starting velocity movement process Accumulation characteristics

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Effect of An Atmospheric Plasma Jet on the Differentiation of Melanoblast Progenitor

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Current Medical Science 2022年第3期42卷 629-634页

作者： Xiao-qi NIE Yu-han LI Ting ZHOU Chen LU Dong LI Zi-lan XIONG Yun-hua deng Department of Dermatology Tongji HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430030China State Key Laboratory of Advanced Electromagnetic Engineering and Technology Huazhong University of Science and TechnologyWuhan 430074China

Objective Melanoblasts are the cell source of regeneration for pigment *** ability to differentiate into mature melanocytes is the essential feature of melanoblasts in depigmentation *** atmospheric plasma is an ionized gas with near-room temperature and highly reactive species that has been shown to induce stem cell *** aim of the study was to explore the effect of cold atmospheric plasma on the differentiation of melanoblast progenitor *** In this study,melanoblasts were exposed to the plasma jet and the cell morphology was *** cell cycle and cell proliferation were ***,the cell immunofluorescence and the detection of melanin particle and nitric oxide were carried out to investigate the differentiation of melanoblast progenitor *** Cells that were treated with the plasma had longer and more synaptic structures,and the G1 phase of cell cycle was prolonged in the treated *** melanin synthesis-related proteins and melanin particles were produced after plasma *** oxide was one of the active components generated by the plasma jet,and the nitric oxide content in the cell culture medium of the treated group *** These results indicate that an increase in nitric oxide production caused by a plasma jet can promote cell *** application of plasma provides an innovative strategy for the treatment of depigmentation diseases.

关键词： atmospheric plasma jet melanoblasts differentiation nitric oxide,depigmentation disease

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Effect of heating time on bonding interface, atom diffusion and mechanical properties of dissimilar titanium joints produced by thermal self-compressing bonding

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Transactions of Nonferrous Metals Society of China 2018年第4期28卷 662-668页

作者： Yun-hua deng Qiao GUAN Jun TAO Aeronautical Key Laboratory for Welding and Joining Technologies AVIC Beijing Aeronautical Manufacturing Technology Research InstituteBeijing 100024China School of Mechanical Engineering and Automation Beihang UniversityBeijing 100191China

Solid-state bonding between pure titanium and Ti6Al4V(TC4)alloy was conducted by a new bonding method named as rigid restraint thermal self-compressing *** of heating time on bonding interface,atom diffusion and mechanical properties of the joints were *** show that atom diffusion between pure titanium and TC4 alloy significantly takes place during *** diffusion depths of Al and V in pure titanium side are increased with increasing heating *** to the enhancement of atom diffusion,bond quality of the bonding interface is improved along with the increase of heating *** heating time seems to have little effect on microhardness distribution across the ***,the tensile strength and ductility of the joint have close relation to heating *** heating time can improve the tensile strength and ductility of the joint,especially the *** the heating time increases to 450 s,solid-state joint with good combination of strength and ductility is attained.

关键词： dissimilar titanium alloys joining rigid restraint thermal self-compressing bonding atom diffusion,mechanical properties

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Machine-learning-assisted prediction of the mechanical properties of Cu–Al alloy

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International Journal of Minerals,Metallurgy and Materials 2020年第3期27卷 362-373页

作者： Zheng-hua deng Hai-qing Yin Xue Jiang Cong Zhang Guo-fei Zhang Bin Xu Guo-qiang Yang Tong Zhang Mao Wu Xuan-hui Qu Collaborative Innovation Center of Steel Technology University of Science and Technology BeijingBeijing 100083China Chongqing Engineering Technology Research Center for Light Alloy and Processing Chongqing Three Gorges UniversityChongqing 404000China Beijing Advanced Innovation Center for Materials Genome Engineering Beijing 100083China Institute for Advanced Materials and Technology University of Science and Technology BeijingBeijing 100083China

The machine-learning approach was investigated to predict the mechanical properties of Cu–Al alloys manufactured using the powder metallurgy technique to increase the rate of fabrication and characterization of new materials and provide physical insights into their *** algorithms were used to construct the prediction models, with chemical composition and porosity of the compacts chosen as the *** results show that the sequential minimal optimization algorithm for support vector regression with a puk kernel(SMOreg/puk) model demonstrated the best prediction ability. Specifically, its predictions exhibited the highest correlation coefficient and lowest error among the predictions of the six models. The SMOreg/puk model was subsequently applied to predict the tensile strength and hardness of Cu–Al alloys and provide guidance for composition design to achieve the expected values. With the guidance of the SMOreg/puk model, Cu–12Al–6Ni alloy with a tensile strength(390 MPa) and hardness(HB 139) that reached the expected values was developed.

关键词： powder metallurgy tensile strength hardness machine learning Cu–Al alloy SMOreg/puk

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Nb_(2)CT_(x)MXene boosting PEO polymer electrolyte for all-solid-state Li-S batteries:two birds with one stone strategy to enhance Li+conductivity and polysulfide adsorptivity

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稀有金属:英文版 2023年第8期42卷 2562-2576页

作者： Si-Ming Liu Meng-Xun Chen Ying Xie deng-hua Liu Jin-Fei Zheng Xiang Xiong Heng Jiang Li-Chang Wang Heng Luo Kai Han State Key Laboratory for Powder Metallurgy College of Chemistry and Chemical EngineeringCentral South UniversityChangsha 410083China Shinghwa Advanced Material Group Co. LtdDongying 257500China School of Physics and Electronics Central South UniversityChangsha 410083China Department of Chemistry Oregon State UniversityCorvallis OR 97331-4003USA School of Geosciences and Info-Physics Central South UniversityChangsha 410083China

All-solid-state lithium-sulfur(Li-S)battery is regarded as next-generation high energy density and safety battery *** key challenge is to develop a compatible high-performance solid-state ***,a two birds with one stone strategy is proposed to simultaneously enhance Li+conductivity and polysulfide adsorptivity of poly(ethylene oxide)(PEO)-based polymer electrolyte via the integration of Nb_(2)CT_(x)***,the sheet size of Nb_(2)CT_(x)MXene is crucial for the enhancement of Li^(+)conductivity and polysulfide adsorptivity,attributing to the difference in a specific surface area related to the percolation *** tuning the sheet size of Nb_(2)CT_(x)MXene from 500-300 nm to below 100 nm,the ionic conductivity of the PEO electrolyte is increased to2.62×10^(-4)S·cm^(-1)with improved Li+transference number of 0.37 at ***,theoretical calculation and X-ray photoelectron spectroscopy(XPS)conjointly prove that poly sulfides could be effectively adsorbed by Nb2CTxnanosheets via forming Nb-S bonding to inhibit their shuttle in the PEO *** a result,the all-solid-state Li-S cell exhibits an initial capacity of 1149 mAh·g^(-1)at 0.5C and good cycling stability with 491 mAh·g^(-1)after 200 *** results demonstrate the necessity of polysulfide inhibition and the application of Nb_(2)CT_(x)MXene in PEO-based electrolytes for all-solid-state Li-S batteries.

关键词： All-solid-state Li-S batteries Polyethylene oxide(PEO)-based electrolyte Nb_(2)CT,MXene Shuttle effect inhibition

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An electron-transfer[Fe_(2)Co_(2)]square complex exhibiting unprecedented wide room-temperature hysteresis

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Science China Chemistry 2024年第4期67卷 1198-1207页

作者： Xin-hua Zhao Yi-Fei deng Jia-Tao Chen Jiong Yang Yuan-Zhu Zhang Department of Chemistry Southern University of Science and Technology(SUSTech)Shenzhen 518055China

Switchable molecules with magnetic bistability that can function at standard conditions are highly desirable from the perspective of practical *** the last decade,significant progress has been made in modulating thermally induced electrontransfer-coupled spin transition(ETCST)events between diamagnetic{Fe_(LS)^(Ⅱ)(μ-CN)Co_(LS)^(Ⅲ)}and paramagnetic{Fe_(LS)^(Ⅲ)(μ-CN)-Co_(HS)^(Ⅱ)}electron configurations(named LS and HS,respectively,for short)within the Fe/Co mixed-valence cyanometallate ***,we prepared a novel[Fe_(2)Co_(2)]square complex[(pzTp)Fe(CN)_(3)Co(bnbpen)]_(2)[NO_(3)]_(2)·4CH_(3)OH·2.5H_(2)O(1·Solv)and its desolvated phase[(pzTp)Fe(CN)_(3)Co(bnbpen)]_(2)[NO_(3)]_(2)(1),obtained via single-crystal-to-single-crystal(SCSC)*** 1·Solv remaining in the diamagnetic state below room temperature exhibits an irreversible ETCST behavior accompanied by desolvation upon ***,complex 1 displays an unprecedented rate-dependent ETCST behaviour involving with two diamagnetic LS states(a dynamically favoured LS1 state and a thermodynamically favoured LS2state),between which a net one-way transition from LS1 to LS2 is accessible likely via a structural phase transition(SPT)above255 ***,two well separated transition channels(HS?LS1 at around 255 K and HS←→LS2 in the temperature range of 317-350 K)are achieved according to either fast(>20 K/min)or slow rate(<1 K/min),*** a moderate rate of 3 K/min,complex 1 shows a wide hysteresis of 66 K centered at 328 K,the largest yet reported for discrete Fe/Co cyanometallate *** 1 represents the first ETCST example coupled with dynamic SPT,providing a new strategy for manipulating bistability within this fascinating cyanometallate family.

关键词： switchable molecules cyanometallate complexes electron transfer hysteresis structural phase transition

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基于Hoff理论的金属复合屋面板夹层壳单元

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浙江大学学报（工学版） 2016年第1期50卷 41-47页

作者：黄莉邓华浙江财经大学房地产与工程管理系浙江杭州310018 浙江大学空间结构研究中心浙江杭州310058

针对大跨度建筑屋盖结构常用的聚氨酯泡沫夹芯金属复合屋面板,根据修正后的Hoff型夹层板理论,建立简便、有效的八结点矩形夹层壳单元.以一块矩形屋面板为例,分别采用分层实体单元、夹层体单元和八结点矩形夹层壳单元模拟.数值结果显示,... 详细信息

针对大跨度建筑屋盖结构常用的聚氨酯泡沫夹芯金属复合屋面板,根据修正后的Hoff型夹层板理论,建立简便、有效的八结点矩形夹层壳单元.以一块矩形屋面板为例,分别采用分层实体单元、夹层体单元和八结点矩形夹层壳单元模拟.数值结果显示,八结点矩形夹层壳单元模拟的屋面板在静荷载作用下的变形形式与精细的分层实体单元模型相同,且两者变形基本接近;基本振型与精细的分层实体单元模型相同,自振频率较接近.表明采用该夹层壳单元能够有效地模拟聚氨酯夹芯金属复合屋面板的静、动力特性.

关键词：金属复合屋面板 Hoff型夹层板夹层壳单元八节点单元

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