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Plasma Science and Technology 2022年第5期24卷 57-63页

作者： Junjie zhang Xin zhang Guoliang PENG Zeping REN Northwest Institute of Nuclear Technology Xi’an 710024People’s Republic of China College of Mechanical and Electrical Engineering Beijing Institute of TechnologyBeijing 100081People’s Republic of China

We have proposed a general numerical framework for plasma simulations on graphics processing unit clusters based on microscopic kinetic equations with full collision *** numerical algorithm consistently deals with both long-range(classical forces in the Vlasov term)and short-range(quantum processes in the collision term)*** the relevant particle masses,charges and types(classical,fermionic or bosonic),as well as the external forces and the matrix elements(in the collisional integral),the algorithm consistently solves the coupled multi-particle kinetic ***,the framework is being tested and applied in the field of relativistic heavy-ion collisions;extensions to other plasma systems are *** framework is a potential and competitive numerical platform for consistent plasma simulations.

关键词： plasma simulations GPU clusters microscopic kinetic equations Jefimenko’s equations relativistic heavy-ion collisions quark–gluon plasma

Timing of mineralization at the Shihu gold deposit in the middle segment of the Taihang Mountain, China

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Acta Geochimica 2018年第1期37卷 80-89页

作者： Chao Chen Shuyin Niu Fang Wang Fuxiang zhang Qinglian zhang Baojun Ma Aiqun Sun Jianzhen zhang Yaqi Cao Xiaoqing zhang Hebei GEO University Shijiazhuang 050031 China

The Shihu gold deposit, located in the middlesouth section of the core of the Fuping mantle branch structure, is hosted in the Archean Fuping Group and adjacent to the quartz diorite porphyrite. The gold deposit is the only large gold deposit with reserves of more than 30 tons gold discovered in western Hebei Province so far. In order to constrain the timing of mineralization of this ore deposit, this paper focuses on the isotopic dating of zircon and pyrite. Zircons in gold-bearing quartz veins are magmatic in origin and no hydrothermal zircon has been found in such quartz veins, indicating that zircons were derived from the wall rocks. U–Pb ages of zircons fall mainly in the two domains: 2492 ± 82 and 136 ± 4 Ma, respectively,indicative of the contribution of the Fuping-Group TTG gneiss and Yanshanian igneous rocks, respectively. The Re–Os isotopic compositions of pyrites in the gold-bearing quartz veins yield an isochron age of 127 ± 31 Ma. Combined with other dating results, we suggest that the main metallogenic age of the Shihu gold deposit is 120–127 Ma.

关键词： Mantle branch structure Shihu gold deposit Zircon U–Pb dating Pyrite Re–Os dating Gold-bearing quartz vein

Photocatalytic and photochemical processes of AgCl/TiO_(2) studied with a fully integrated X-ray photoelectron spectrometer

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Rare Metals 2021年第4期40卷 799-807页

作者： Kai Zhou Wen-Lu He Xiao zhang Bin zhang Xiang-Nan Gong Kai-Wen Wang Zhi-Chao zhang Xi-Lan zhang Zhi-Ning Xia Xiao-Yuan Zhou Analytical and Testing Center Chongqing UniversityChongqing 401331China College of Physics Chongqing UniversityChongqing 401331China Beijing Key Laboratory and Institute of Microstructure and Property of Advanced Materials Beijing University of TechnologyBeijing 100124China School of Materials Science and Engineering Chongqing UniversityChongqing 400045China

A fully integrated X-ray photoelectron spectrometer(XPS) was employed for the investigation of the separation processes and recombination behaviors of photogenerated electrons and holes on the surface of AgCl and ultra-small nano-titanium oxide cluster composite photocatalyst(AgCl/TiO_(2)).A facile route,by direct colloidal synthesis,for preparing AgCl/TiO_(2)with high stability and enhanced visible light(Vis) driven catalytic activity was *** photocatalytic activity of AgCl/TiO_(2),which revealed that the photo-degradation rate of the as-prepared AgCl/TiO_(2)was nearly 10.5 times higher than that of bare AgCl,was evaluated by applying it to the photo-degradation of methyl orange(MO) in water ***,AgCl/TiO_(2)exhibited an outstanding long-term stability during ten cycles of *** band gap of AgCl decreased from 3.25 to 2.85 eV because of the ultrasmall nano-TiO_(2)clusters that were pinned to its *** results indicate that the band gap narrowing and surface plasmon resonance(SPR) of Ag(0) were two major contributors to the enhancement of the photocatalytic activity of AgCl/TiO_(2)by improving the utilization of *** situ XPS analysis was,therefore,certified as a beneficial method to explore the catalytic mechanism of photocatalysts.

关键词： Photocatalysis AgCl/TiO_(2) Fully integrated XPS Band gap narrowing

Robust formation control for missiles with obstacle avoidance

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Chinese Journal of Aeronautics 2022年第1期35卷 70-80页

作者： Yong GUO Dan-yang SONG Changqing WANG Jinpeng zhang Gongping zhang Aijun LI School of Automation Northwestern Polytechnical UniversityXian 710000China Luoyang Optoelectro Technology Development Center Luovang 471000China Aviation Key Laboratory of Science and Technology on Airborne Guided Weapons Luoyang 471000China

This paper investigates the robust formation control for missiles with obstacle avoidance.A sliding mode surface that is asymptotically stable is firstly presented by the collision avoidance potential function and hyperbolic tangent *** on the sliding mode surface,a robust formation controller with obstacle avoidance is designed for *** improve the convergence rate,a finite-time controller which can deal with the formation control for missiles is given using an improved sliding mode ***,the effectiveness of the designed controllers for missiles is demonstrated by the Lyapunov theory and simulation results.

关键词： Collision avoidance Finite-time control Missile formation Potential function Sliding mode control

A Note on Curvature Estimate of the Hermitian–Yang–Mills Flow Dedicated to celebrate the Sixtieth anniversary of USTC

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Communications in Mathematics and Statistics 2018年第3期6卷 319-358页

作者： Jiayu Li Chuanjing zhang Xi zhang School of Mathematical Sciences University of Science and Technology of ChinaHefei 230026People’s Republic of China AMSS CASBeijing 100080People’s Republic of China

In this paper,we study the curvature estimate of the Hermitian–Yang–Mills flow on holomorphic vector *** one simple case,we show that the curvature of the evolved Hermitian metric is uniformly bounded away from the ... 详细信息

关键词： Holomorphic structure Harder-Narasimhan-Seshadri filtration Hermitian-Yang-Mills flow

LncRNA AFAP1-AS1 exhibits oncogenic characteristics and promotes gemcitabine-resistance of cervical cancer cells through miR-7-5p/EGFR axis

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Oncology Research 2024年第12期32卷 1867-1879页

作者： CHAOQUN WANG TING zhang CHAOHE zhang Department of Gynecology Aviation General HospitalBeijing100020China Department of Burn and Skin Surgery First Affiliated Hospital of Air Force Military Medical UniversityXi’an710032China Department of Oncology and Hematology Second Hospital of Jilin UniversityChangchun130000China

Background:Drug resistance is the main factor contributing to cancer recurrence and poor *** of drug resistance-related mechanisms and effective therapeutic targets are the aim of molecular targeted *** our study,the role of long non-coding RNA(lncRNA)AFAP1-AS1 in gemcitabine resistance and related mechanisms were explored in cervical cancer ***:Gemcitabine-resistant cervical cancer cell lines HT-3-Gem and SW756-Gem were constructed using the gemcitabine concentration gradient *** overall survival rates and recurrence-free survival rates were evaluated by Kaplan-Meier *** interaction was veriﬁed through a Dual-luciferase reporter gene assay and a Biotinylated RNA pull-down *** proliferation ability was assessed through methyl-thiazolyl-tetrazolium(MTT),soft agar,and colony formation *** cycle and apoptosis were detected byﬂow ***:Up-regulation of AFAP1-AS1 in cervical cancer predicted a poor ***,patients in the gemcitabine-resistance group had higher levels of AFAP1-AS1 than the gemcitabine-sensitive ***1-AS1 promoted tumor growth and induced gemcitabine tolerance of cervical cancer *** addition,AFAP1-AS1 mediated epidermal growth factor receptor(EGFR)expression by serving as a molecular sponge for microRNA-7a-5p(miR-7-5p).This present study also proved that the knockdown of EGFR or overexpression of miR-7a-5p abolished the accelerative role of AFAP1-AS1 overexpression in cancer progression and gemcitabine ***:In general,the AFAP1-AS1/miR-7-5p/EGFR axis was tightly related to the progression and gemcitabine tolerance of cervical cancer,providing potential targets for the management of cervical cancer.

关键词： Long non-coding RNA(lncRNA)AFAP1-AS1 miR-7-5p Epidermal growth factor receptor(EGFR) Gemcitabine-resistance Cervical cancer

Antifreezing and Stretchable Organohydrogels as Soft Actuators

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Research 2019年第1期2019卷 14-24页

作者： Yukun Jian Baoyi Wu Xiaoxia Le Yun Liang Yuchong zhang Dachuan zhang Ling zhang Wei Lu Jiawei zhang Tao Chen Key Laboratory of Marine Materials and Related Technologies Zhejiang Key Laboratory of Marine Materials and Protective TechnologiesNingbo Institute of Material Technology and EngineeringChinese Academy of SciencesNingbo 315201China University of Chinese Academy of Sciences 19A Yuquan RoadBeijing 100049China

Inspired by the freezing tolerance performances found in living creatures, an effect approach is presented to develop novelantifreezing polymeric organohydrogel actuators. Through construction of a bilayer hydrogel including a nonresponsivepolyacrylamide (PAAm) layer and a pH-responsive polyacrylic acid (PAA) layer in the presence of a mixed solvent of water andglycerol, organohydrogel actuators that could produce various shape deformations at subzero temperatures have been achieved,and the actuating speed could be tuned by adjusting the temperature and the ratio between glycerol and water. Moreover, aseries of application demonstrations including a weightlifting robot, artificial valve, and robotic arm have been displayed. Inaddition, by introducing the ionic compound KI into the glycerol-based organogel, flexible conductors that could perform stablesensing performance over a wide range of temperatures from -30℃ to 60℃ have been developed.

关键词： freezing hydrogel organo

A New Equalization Method for Lithium-Ion Battery Packs Based on CUK

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Energy Engineering 2024年第6期121卷 1459-1472页

作者： Yu zhang Sheng Tian Yongkang zhang School of Electrical and Electronic Engineering Hubei University of TechnologyWuhan430000China

Aiming at the traditional CUK equalizer can only perform energy equalization between adjacent batteries,if the two single batteries that need to be equalized are far away from each other,there will be the problem of longer energy transmission path and lower equalization efficiency,this paper optimizes the CUK equalizer and optimizes its peripheral selection circuit,which can support the equalization of single batteries at any two *** control strategy adopts the open-circuit voltage(OVC)of the battery and the state of charge(SOC)of the battery as the equalization variables,and selects the corresponding equalization variables according to the energy conditions of the two batteries that need to be equalized,and generates the adaptive equalization current with an adaptive PID controller in order to improve the equalization *** modeling is performed in Matlab/Simulink 2021b,and the experimental results show that the optimized CUK equalizer in this paper improves the equalization time by 25.58%compared with the traditional CUK *** addition,compared with the mean value difference(MVD)method,the adaptive PID method reduces the equalization time by about 30%in the static and charging and discharging experimental environments,which verifies the superiority of this equalization scheme.

关键词： battery balancing CUK equalizer adaptive PID SOC

Red carbon dots as label-free two-photon fluorescent nanoprobes for imaging of formaldehyde in living cells and zebrafishes

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Chinese Chemical Letters 2020年第3期31卷 759-763页

作者： Hong Wang Jing Wei Chonghua zhang Yuan zhang Yubin zhang Lin Li Changmin Yu Peisheng zhang Jian Chen Key Laboratory of Theoretical Organic Chemistry and Functional Molecule of Ministry of Education Hunan Provincial Key Laboratory of Controllable Preparationand Functional Application of Fine PolymersHunan Provincial Key Lab of Advanced Materials for New Energy Storage and ConversionHunan Province College KeyLaboratory of QSAR/QSPRSchool of Chemistry and Chemical EngineeringHunan University of Science and TechnologyXiangtan 411201China Key Laboratory of Flexible Electronics(KLOFE)&Institute of Advanced Materials(IAM) Nanjing Tech UniversityNanjing 211800China State Key Laboratory of Luminescent Materials and Devices South China University of TechnologyGuangzhou 510640China

Direct,in situ selective detection of intracellular formaldehyde(FA)is of great significance for understanding its function in FA-related ***,red carbon dots(RCD)are reported as label-free two-photon fluorescent nanoprobes for detecting and imaging of *** addition of FA,the-NH2 groups of RCD could quickly and specially react with aldehydes to form Schiff base and then the strong fluorescence of RCD with blue-shift emission is recovery due to the destruction of the hydrogen bond interaction between RCD and *** addition,the nanoprobes exhibit outsta nding photo stability,rapid response(<1 min),high sensitivity(~9.9μmol/L)and excellent selectivity toward FA over other aldehyde group ***,owing to the good cell-membrane permeability and biocompatibility,as well as the large two-photon absorption cross-section,the as-prepared RCD can be used as label-free nanoprobes for selectively detecting and imaging FA in living cells and zebrafishes through one-photon and two-photon ***,RCD could stain the tissue of zebrafishes at depths interval of up to 240μm under two-photon *** research implied that RCD are promising tools for directly and in situ imaging FA in vivo,thus providing critical insights into FA-related pathophysiological processes.

关键词： Carbon dots(CDs) Two-photon excitation Formaldehyde(FA) Intracellular imaging Zebrafishes

Generation of Plvap-CreER and Car4-CreER for genetic targeting of distinct lung capillary populations

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Journal of Genetics and Genomics 2022年第12期49卷 1093-1100页

作者： Zhenqian zhang Bin Zhou State Key Laboratory of Cell Biology Shanghai Institute of Biochemistry and Cell BiologyCenter for Excellence in Molecular Cell ScienceChinese Academy of SciencesUniversity of Chinese Academy of SciencesShanghai 200031China Key Laboratory of Systems Health Science of Zhejiang Province School of Life ScienceHangzhou Institute for Advanced StudyUniversity of Chinese Academy of SciencesHangzhouZhejiang 310024China School of Life Science and Technology Shanghai Tech UniversityShanghai 201210China

It has been reported recently that there are two distinct subpopulations of capillary endothelial cells in the mammalian lungs:gCap(general capillary)and aCap(aerocyte).They are identified by two unique markers,respectively:plasmalemmal vesicle-associated protein(PLVAP)and carbonic anhydrase IV(CAR4).Here,we report two novel knock-in mouse lines Plvap-CreER and Car4-CreER,which genetically target gCap and aCap,*** by tamoxifen,the Plvap-CreER and Car4-CreER alleles mediate specific and efficient Cre-loxP recombinations in PLVAP+gCap and CAR4+aCap,respectively,in the *** two mouse lines are useful genetic tools to investigate cell fates and functions of PLVAP+and CAR4+cells in lung homeostasis,injury and repair.

关键词： lung homeostasis capillary