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Microglia-associated neuroinflammation is a potential therapeutic target for ischemic stroke

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Neural Regeneration Research 2021年第1期16卷 6-11页

作者： Wan Zhang Tian Tian shao-Xin Gong Wen-qian Huang Qin-Yi Zhou Ai-Ping Wang Ying Tian Institute of Clinical Research Affiliated Nanhua HospitalUniversity of South ChinaHengyangHunan ProvinceChina Department of Clinical Laboratory the First Hospital of ChangshaChangshaHunan ProvinceChina Department of Pathology the First Affiliated Hospital of University of South ChinaHengyangHunan ProvinceChina

Microglia-associated neuroinflammation plays an important role in the pathophysiology of ischemic *** activation and polarization,and the inflammatory response mediated by these cells play important roles in the development,progression and outcome of brain injury after ischemic ***,there is no effective strategy for treating ischemic stroke in clinical ***,it is clinically important to study the role and regulation of microglia in *** this review,we discuss the involvement of microglia in the neuroinflammatory process in ischemic stroke,with the aim of providing a better understanding of the relationship between ischemic stroke and microglia.

关键词： brain cells central nervous system inflammation injury macrophages repair review stroke

Synthesis, Crystal Structure and Fluorescence Property of a Zinc(Ⅱ) Coordination Polymer with a Theoretical Calculatio

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Chinese Journal of Structural Chemistry 2021年第1期40卷 79-84,3页

作者： WANG Wen-qian CHEN Jun WANG Shuai-Hua WU shao-Fan College of Chemistry and Chemical Engineering Fujian Normal UniversityFuzhou 350117China Key Laboratory of Optoelectronic Materials Chemistry and Physics Fujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002China School of Ecological Environment and Urban Construction Fujian University of TechnologyFuzhou 350118China

We have designed and synthesized a new luminescent coordination polymer[Zn_(2)(NO_(3))(NCP)_(3)(H2O)_(3)]n·2 nH_(2)O(1,HNCP=2-(2-carboxyphenyl)imidazo-[4,5-f]-1,10-phenanthroline)under hydrothermal conditions,which has been structurally characterized by single-crystal X-ray diffraction analyses.1 crystallizes in monoclinic,space group P2_(1)/n,with a=13.7748(3),b=19.2651(4),c=19.9543(4)Å,β=95.339(2)o,V=5272.35(19)Å^(3),C_(60) H_(39.73) N_(13) O_(13.33) Zn_(2),M_(r)=1286.80,D_(c)=1.621 g/cm^(3),Z=4,μ(Mo Ka)=2.118,F(000)=2629,the final R=0.0598 and w R=*** 1,the organic ligand NCP-displays two different bridging modes to connect adjacent Zn(II)ions into a 1 D chain along the *** analyses reveal that 1 exhibits a strong green emission with a fluorescent lifetime of 5.57 *** first-principle calculation results show that the luminescence mainly originates from ligand-centered charge transition.

关键词： hydrothermal method crystal structure luminescence theoretical calculation

Temperature-sensitive and solvent-resistance hydrogel sensor for ambulatory signal acquisition in“moist/hot environment”

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Nano Research 2023年第7期16卷 10348-10357页

作者： Xinyu Qu Hanjun Sun Xiaolong Kan Bing Lei Jinjun shao qian Wang Wenjun Wang Zhenhua Ni Xiaochen Dong Key Laboratory of Flexible Electronics(KLOFE)&Institute of Advanced Materials(IAM) School of Physical and Mathematical SciencesNanjing Tech University(NanjingTech)Nanjing 211816China School of Physical Science and Information Technology Liaocheng UniversityLiaocheng 252059China School of Physics and Key Laboratory of MEMS of the Ministry of Education Southeast UniversityNanjing 211189China School of Chemistry&Materials Science Jiangsu Normal UniversityXuzhou 221116China

To realize continuously and stably work in a“moist/hot environment”,flexible electronics with excellent humid resistance,antiswelling,and detection sensitivity are ***,a solvent-resistant and temperature-ultrasensitive hydrogel sensor was prepared by combining MXene and quaternized chitosan(QCS)with the binary polymer *** strong electrostatic interaction between the QCS chain and the poly(acrylic acid)(PAA)network endows the hydrogel stability against solvent erosion,high temperature,and high *** strong dynamic interaction between MXene and polymer matrix significantly improves the mechanical properties and sensing(strain and temperature)sensitivity of the *** hydrogel strain sensor exhibits a high gauge factor(5.53),temperature/humidity tolerance(equilibrium swelling ratio of 2.5%at 80℃),and excellent cycle stability,which could achieve a remote and accurate perception of complex human motion and environment fluctuation under aquatic ***,the hydrogel sensor exhibits impressive thermal response sensitivity(-3.183%/℃),ultrashort response time(<2.53 s),and a low detection limit(<0.5℃)in a wide temperature range,which is applied as an indicator of the body surface and ambient *** short,this study broadens the application scenarios of hydrogels in persistent extreme thermal and wet environments.

关键词： flexible electronics hydrogel sensor solvent-resistance underwater application

Chlorine-anion doping induced multi-factor optimization in perovskites for boosting intrinsic oxygen evolution

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Journal of Energy Chemistry 2021年第1期30卷 115-120,I0004页

作者： Yinlong Zhu qian Lin Zhenbin Wang Dongchen Qi Yichun Yin Yu Liu Xiwang Zhang Zongping shao Huanting Wang Department of Chemical Engineering Monash UniversityClaytonVIC 3800Australia Department of Physics Technical University of Denmark2800 Kongens LyngbyDenmark School of Chemistry and Physics Centre for Materials ScienceQueensland University of TechnologyBrisbaneQueensland 4001Australia Department of Chemical Engineering Curtin UniversityPerthWestern Australia 6845Australia

The oxygen evolution reaction(OER) plays a crucial role in many electrochemical energy technologies,and creating multiple beneficial factors for OER catalysis is desirable for achieving high catalytic ***,we highlight a new halogen-chlorine(Cl)-anion doping strategy to boost the OER activity of perovskite *** a proof-of-concept,proper Cl doping at the oxygen site of LaFeO3(LFO) perovskite can induce multiple favorable characteristics for catalyzing the OER,including rich oxygen vacancies,increased electrical conductivity and enhanced Fe-O *** from these factors,the LaFeO2.9-δCl0.1(LFOCl) perovskite displays significant intrinsic activity enhancement by a factor of around three relative to its parent *** work uncovers the effect of Cl-anion doping in perovskites on promoting OER performance and paves a new way to design highly efficient electrocatalysts.

关键词： Anion doping Halogen chlorine Multiple beneficial factors Oxygen evolution reaction Perovskite oxide

Combined application of Trichoderma harzianum SH2303 and difenoconazole-propiconazolein controlling Southern corn leaf blight disease caused by Cochliobolus heterostrophus in maize

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Journal of Integrative Agriculture 2019年第9期18卷 2063-2071页

作者： WANG shao-qing MA Jia WANG Meng WANG Xin-hua LI Ya-qian CHEN Jie School of Agriculture and Biology Shanghai Jiao Tong UniversityShanghai 200240P.R.China Key Laboratory of Urban Agriculture(South)Ministry of Agriculture Shanghai Jiao Tong UniversityShanghai 200240P.R.China State Key Laboratory of Microbial Metabolism Shanghai Jiao Tong UniversityShanghai 200240P.R.China Plant Genetic Engineering Center of Hebei Province Institute of Genetics and PhysiologyHebei Academy of Agriculture and Forestry SciencesShijiazhuang 050051P.R.China

Southern corn leaf blight(SCLB)disease caused by Cochliobolus heterostrophus is one of the major threats to corn production *** synergistic application of low toxic chemical fungicide and biocontrol agents could improve biocontrol stability and efficiency against plant diseases,which ultimately reduce use of chemical *** spp.,well-known biocontrol fungi have been used to control some foliar ***,few works have been reported on synergistic application of chemical fungicide and Trichoderma against foliar *** study was aimed to investigate the control effect on the synergistic application of Trichoderma harzianum SH2303 and difenoconazole-propiconazole(DP)against *** showed that the synergistic application of DP and SH2303 reduced the leaf spot area compared to the *** efficacy of synergistic application of DP+SH2303 against SCLB could last for 15–20 d in pot trial under the greenhouse *** the natural field condition,maize treated with DP+DP and DP+SH2303 showed 60%control,which was higher than that of SH2303+DP(45%)and SH2303+SH2303(35%).All these treatments induced the synthesis of defense-related enzymes(phenylalanine ammonia lyase(PAL),catalase(CAT),and superoxide dismutase(SOD))and the defence-related gene expression of SA pathway(PR1).Taken together the in-vitro leaf test and field trial,the control of SCLB by synergistic application of DP+SH2303 was similar to that of DP+*** synergistic application,the sequential application of DP+SH2303 showed better control than the sequential application of SH2303+*** was concluded that the synergistic application of chemical fungicide(DP)and biocontrol agent(*** SH2303)could be used to reduce the chemical fungicide and to reduce the SCLB diseases in maize,which provided alternative approach to realize an eco-friendly controlling of the foliar disease.

关键词： synergistic bio-control chemical fungicide Trichoderma harzianum maize leaf spot disease

Facile and efficient one-pot synthesis of 2-arylbenzoxazoles using hydrogen tetrachloroaurate as catalyst under oxygen atmosphere

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2009年第6期10卷 472-478页

作者： Yun-kui LIU Da-jie MAO shao-jie LOU Jian-qiang qian Zhen-yuan XU State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology Zhejiang University of Technology Hangzhou 310014 China

In this paper, we presented a novel method for the facile and efficient one-pot synthesis of 2-arylbenzoxazoles, which were directly synthesized from 2-aminophenol and aldehydes catalyzed by hydrogen tetrachloroaurate (HAuCl4·4H2O) under an oxygen atmosphere with anhydrous tetrahydrofuran (THF) as solvent or in solvent-free condition. The results show that this method could bring excellent yields as high as 96%. THF was proven to be the best choice among several solvents screened and the reaction was tolerated with a variety of aromatic aldehydes possessing electron-donating or withdrawing groups. The advantages of the present method lie in catalytic process using economic and environmentally benign dioxygen as oxidant.

关键词： 2-Arylbenzoxazoles 2-Aminophenol Aldehydes Hydrogen tetrachloroaurate One-pot synthesis

Thermal-sensitive ionogel with NIR-light controlled adhesion for ultrasoft strain sensor

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Nano Research 2023年第4期16卷 5464-5472页

作者： Bing Lei Longxue Cao Xinyu Qu Yunlong Liu Jinjun shao qian Wang Shuhong Li Wenjun Wang Xiaochen Dong School of Physical Science and Information Technology Liaocheng UniversityLiaocheng 252059China Key Laboratory of Flexible Electronics(KLOFE)&Institute of Advanced Materials(IAM) School of Physical and Mathematical SciencesNanjing Tech University(NanjingTech)Nanjing 211816China School of Chemistry&Materials Science Jiangsu Normal UniversityXuzhou 221116China

With the widespread prevailing of flexible electronics in human-machine interfaces,health monitor,and human motion detection,ultrasoft flexible sensors are urgently desired with critical demands in ***,a temperature-sensitive ionogel with near-infrared(NIR)-light controlled adhesion is prepared by electrostatic interaction of poly(diallyl dimethylammonium chloride)(PDDA)and acrylic acid,as well as the incorporation of the conductive polydopamine modified polypyrrole nanoparticles(PPy-PDA NPs).The PPy-PDA NPs could weaken the tough interaction between polymer chains and depress the Young’s modulus of the ionogel,thus promoting the ionogel ultrasoft(34 kPa)and highly stretchable(1,013%)performance to tensile *** addition,the high photothermal conversion capacity of PPy-PDA NPs ensured the ionogel excellent NIR-light controlled adhesion and temperature sensitivity,which facilitated the ionogel on-demand removal and promised a reliable thermal ***,the resulted ultrasoft flexible sensor exhibited high sensitivity and stability to both strain and pressure in a broad range of deformations,enabling a precise monitoring on various human motions and physiological *** temperature-sensitive,ultrasoft,and controlled adhesive capabilities prompted great potential of the flexible ionogel in medical diagnosis and wearable electronics.

关键词： ultrasoft temperature-sensitive controllable adhesion photothermal effect flexible sensor

Quasinormal oscillations and late-time tail of massless scalar perturbations of a magnetized black hole in Rastall gravity

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Chinese Physics C 2022年第10期46卷 215-229页

作者： Cai-Ying shao Yu-Jie Tan Cheng-Gang shao Kai Lin Wei-Liang qian MOE Key Laboratory of Fundamental Physical Quantities Measurement Hubei Key Laboratory of Gravitation and Quantum PhysicsPGMFand School of PhysicsHuazhong University of Science and Technology430074 WuhanChina Hubei Subsurface Multi-scale Imaging Key Laboratory Institute of Geophysics and GeomaticsChina University of Geosciences430074 WuhanChina Escola de Engenharia de Lorena Universidade de Sao Paulo12602-810LorenaSPBrazil Faculdade de Engenharia de Guaratinguetá Universidade Estadual Paulista12516-410GuaratinguetáSPBrazil and Center for Gravitation and Cosmology School of Physical Science and TechnologyYangzhou University225002 YangzhouChina

In this study,we investigate the quasinormal mode and late-time tail of charged massless scalar perturbations of a black hole in generalized Rastall *** black hole metric in question is spherically symmetric,accompanied by a power-Maxwell field surrounded by a quintessence *** show that the massless scalar field,when dressed up with the magnetic field,acquires an effective mass,which significantly affects the properties of the resultant quasinormal oscillations and late-time ***,the quasinormal frequencies become distorted and might even be unstable for particular spacetime ***,the exponent of the usual power-law tail is modified according to the modification in the structure of the branch cut of the retarded Green s *** particular,as the effective mass is generated dynamically owing to the presence of the magnetic field,we may consider a process through which the field is gradually removed from the spacetime *** this context,while the quasinormal oscillations converge to the case of massless perturbations,we argue that the properties of resultant late-time tails do not fall back to their massless *** relevant characteristics are investigated using numerical and analytic approaches.

关键词： black hole quasinormal modes late-time tail Rastall gravity

Increase of ambient formaldehyde in Beijing and its implication for VOC reactivity

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Chinese Chemical Letters 2012年第9期23卷 1059-1062页

作者： qian Zhang Min shao Yang Li Si Hua Lu Bin Yuan Wen Tai Chen State Joint Laboratory of Environmental Simulation and Pollution Control College of Environmental Sciences and EngineeringPeking UniversityChina Beifing 100871

Influencing atmospheric OH radical budget and tropospheric ozone production, ambient formaldehyde （HCHO） is one of the key oxygenated volatile organic compounds （OVOCs）. We present the variations on formaldehyde column densities in summertime in Beijing retrieved from ozone monitoring instrument （OMI） between 2005 and 2011. Satellite columns of HCHO correlated well with available ground-based measurements despite some noticeable differences. The orthogonal distance regression （ODR） method was used to estimate the ratio between satellite columns and ground-level concentrations, whereas ordinary least squares （OLS） method was used to fit the trend of ambient formaldehyde. The formaldehyde concentrations derived from HCHO columns were in the range of 7-12 ppbv and steadily increased at an approximate rate of 0.64 ppbv/yr （7.8% at 2005 level） with an uncertainty of 51%. VOC reactivity quantified by means of OH loss rates showed increasing contribution from formaldehyde and acetaldehyde, rising from 35% in 2005 to 40% in 2010, and decreasing contribution from anthropogenic VOCs, dropping from 49% in 2005 to 40% in 2010. More attention should be paid to understanding the net feedback of increasing formaldehyde to ozone formation potential.

关键词： Formaldehyde Satellite observations Temporal variations VOC reactivity