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Chinese Chemical Letters 2024年第2期35卷 558-563页

作者： Sheng Cai xiao-Yuan Wu Weiming Wu sa-sa Wang Can-Zhong Lu CAS Key Laboratory of Design and Assembly of Functional Nanostructures and Fujian Provincial Key Laboratory of NanomaterialsFujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002China College of Chemistry and Materials Science Fujian Normal UniversityFuzhou 350117China Xiamen Institute of Rare Earth Materials Chinese Academy of SciencesXiamen 361021China University of Chinese Academy of Sciences Beijing 100049China

Partial substitution of polyoxometalate(POM)is an efficient route to modulate the catalytic property of maternal *** this work,a new Keggin type POM involving{Ni 6}cluster,{[Ni(H_(2) O)_(2)(Dach)_(2)][Ni(Dach)_(2)]_(2)}{[Ni_(6)Cl(μ-OH)_(3)(H_(2) O)(Dach)_(3)(WO_(4))(PW9 O_(3)_(4))][Ni_(6)(μ-OH)_(3)(H_(2) O)_(2)(Dach)_(3)(WO_(4))(PW9 O_(3)_(4))]}Cl·27H_(2) O,(1,Dach=1,2-diaminocyclohexane)was *** 1 shows excellent catalytic performance in the selective oxidation of aniline to azoxybenzene(AOB)in *** apparently different results from that with the matrix{PW 9 O_(3)_(4)}({PW9})suggest the successful regulation of the catalytic property of{PW9}by the introduction of the{Ni6}cluster into the *** experimental results indicate that the highlighted performance of 1 is contributed by the synergy of W and Ni sites,which are respectively responsible for the oxidation and condensation steps in the production of *** good selectivity to AOB is essentially attributed to the effective modulation of the reaction rates of oxidation and condensation steps by W and Ni sites,respectively.

关键词： Polyoxometalate {Ni6}cluster Modulated catalytic property Aniline oxidation Azoxybenzene

Supertetragonal BaZrS_(3):A promising perovskite sulphide with giant ferroelectricity and low band gap

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Science China(Physics,Mechanics & Astronomy) 2024年第8期67卷 126-133页

作者： Menglu Li sa Zhang Chenhan Liu xiaotao Zu Liang Qiao Haiyan xiao School of Physics University of Electronic Science and Technology of ChinaChengdu 611731China College of Mathematics and Physics Chengdu University of TechnologyChengdu 610059China Micro-and Nano-scale Thermal Measurement and Thermal Management Laboratory Ministry of Education Key Laboratory of Numerical Simulation of Large-Scale Complex SystemsSchool of Energy and Mechanical EngineeringNanjing Normal UniversityNanjing 210023China

Over the past century,ferroelectricity has offered exciting opportunities for fundamental research and device ***,most of the discovered excellent ferroelectrics are oxide materials with large band gaps,limiting their potential for optoelectronics *** using first-principles calculations we identify a new narrow-gap ferroelectric beyond oxides,i.e.,ferroelectric perovskite sulphide BaZrS_(3).Under large compressive strains,BaZrS_(3)can be stabilized into a unique supertetragonal phase with an extraordinary polarization of 67.16μC/cm^(2),which is even stronger than that of conventional oxide ***,the supertetragonal BaZrS_(3)exhibits a direct narrow band gap of 1.2 eV and excellent electronic *** on the chemical bonding analysis,we attribute the formation of supertetragonal phase to charge re-ordering in which theπbond overlap along the long〈Zr-S〉bond completely vanishes and the antibonding states of theσbond appear below the Fermi *** work provides a conceptual strategy for designing new ferroelectrics for electronic and photovoltaic applications.

关键词： supertetragonal phase perovskite sulphide ferroelectricity

Evaluation of an ischemic model in ischemia prone and general Mongolian gerbils by neurological symptom, injury,and sex difference

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Animal Models and Experimental Medicine 2018年第1期1卷 62-67页

作者： xiao-yan Du Chang-long Li Meng Guo ying Wang Hong-gang Guo Fang-wei Dai xiao-ying sa Zhen-wen Chen School of Basic Medical Science Capital Medical University Department of Laboratory Animal Capital Medical University Zhejiang Center of Laboratory Animals Zhejiang Academy of Medical Science

Background: In the previous study, we established an ischemia-prone gerbil population(IG), which was selectively bred to increase the incidence of unilateral carotid arterial occlusion(UCO)-induced ischemia in Mongolian gerbils. However, if the characteristics of ischemia model in IG are the same as those in general gerbils(GG), and if the neurological symptoms are associated with the neurological insults in IG is still ***: In the present study, we evaluated the UCO model in IG by analyzing neurological symptoms, neurological injury in the hippocampal CA1 region and compared with ***: The data showed that the ratios of neurological symptom scores ≥ 2 in the IG and GG groups were 65.0% vs 30.0%, respectively, and were significantly different(P <.01).The neuronal damage following a UCO ischemic insult in the IG group was more severe compared to the GG group. There was a high correlation between the neurological insults' scale and the neurological symptom score in the IG and GG groups(r =.979 and.943 in the IG and GG groups, respectively). In animals with mild neurological symptom scores(2 and 3), the neuronal insults were significantly different between female and male gerbils in both IG and ***: Our findings suggest that IG population would likely be more advantageous to establish an ischemic model.

关键词： anterior communicating artery Circle of Willis gerbil ischemia-prone neurological injury,posterior communicating artery sex difference

Supertetragonal BaZrS: A promising perovskite sulphide with giant ferroelectricity and low band gap

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Science China(Physics,Mechanics & Astronomy) 2024年

作者： Menglu Li sa Zhang Chenhan Liu xiaotao Zu Liang Qiao Haiyan xiao School of Physics University of Electronic Science and Technology of China College of Mathematics and Physics Chengdu University of Technology Micro-and Nano-scale Thermal Measurement and Thermal Management Laboratory Ministry of Education Key Laboratory of Numerical Simulation of Large-Scale Complex Systems School of Energy and Mechanical Engineering Nanjing Normal University

Over the past century, ferroelectricity has offered exciting opportunities for fundamental research and device ***, most of the discovered excellent ferroelectrics are oxide materials with large band gaps, limiting their potential for optoelectronics applications. Here using first-principles calculations we identify a new narrow-gap ferroelectric beyond oxides,i.e., ferroelectric perovskite sulphide BaZrS3. Under large compressive strains, BaZrS3can be stabilized into a unique supertetragonal phase with an extraordinary polarization of 67.16 μC/cm2, which is even stronger than that of conventional oxide ferroelectrics. Excitingly, the supertetragonal BaZrS3exhibits a direct narrow band gap of 1.2 eV and excellent electronic properties. Based on the chemical bonding analysis, we attribute the formation of supertetragonal phase to charge re-ordering in which the π bond overlap along the long ?Zr-S? bond completely vanishes and the antibonding states of the σ bond appear below the Fermi level. Our work provides a conceptual strategy for designing new ferroelectrics for electronic and photovoltaic applications.

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Bioinspired nanotransducers for neuromodulation

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Nano Research 2024年第2期17卷 618-632页

作者： Fan Yang Xiang Wu sa Cai Guosong Hong Department of Materials Science and Engineering Stanford UniversityStanfordCA 94305USA Wu Tsai Neurosciences Institute Stanford UniversityStanfordCA 94305USA School of Science Shenzhen Campus of Sun Yat-sen UniversityShenzhen 518107China

The field of neuromodulation has experienced significant advancements in the past decade,owing to breakthroughs in disciplines such as materials science,genetics,bioengineering,photonics,and *** convergence of these fields has resulted in the development of nanotransducers,devices that harness the synergies of these diverse *** nanotransducers,essential for neuromodulation,often draw inspiration from energy conversion processes found in nature for their unique *** this review,we will delve into the latest advancements in wireless neuromodulation facilitated by optical,magnetic,and mechanical *** will examine their working principles,properties,advantages,and limitations in comparison to current methods for deep brain neuromodulation,highlighting the impact of natural systems on their design and ***,we will underscore potential future directions,emphasizing how continued progress in materials science,neuroscience,and bioengineering might expand the horizons of what is achievable with nanotransducer-enabled neuromodulation.

关键词： bioinspired synthesis neuromodulation mechanoluminescence focused ultrasound nanotransducers sono-optogenetics

Quaternionic Monge–Ampère Measure on Pluripolar Set

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Acta Mathematica Sinica,English Series 2024年第6期40卷 1431-1457页

作者： Hichame AMAL saïd ASSERDA Fadoua BOUKHARI Department of Mathematics Laboratory LaREAMIRegional Centre of Trades of Education and TrainingKenitraMorocco Ibn Tofail University Faculty of SciencesDepartment of MathematicsPO 242 KenitraMorroco

In this paper, we prove that in a hyperconvex domain Ω in H^(n), if a non-negative Borel measure is dominated by a quaternionic Monge–Ampère measure, then it is a quaternionic Monge–Ampère measure of a function i... 详细信息

关键词： Quaternion space Monge-Amp`ere operator plurisubharmonic function

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Neuropotective effect of HAMI3379,a selective cysteinyl leukotriene receptor 2 antagonist,on focal cerebral ischemia in rats

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Neuropotective effect of HAMI3379,a selective cysteinyl leuk...

Transverse momentum balance of dijets in Xe+Xe collisions at the LHC

第十届中国实验动物科学年会

作者： Qiao-Juan Shi Li xiao xiao-ying sa Er-Qing Wei Experimental Animal Center Zhejiang Academy of Medical Sciences Department of Pharmacology School of MedicineZhejiang University

Objective Cysteinyl leukotrienes(CysLTs) induce inflammatory responses mediated by activating CysLT1 and CysLT2 *** have recently reported CysLT2 receptor is involved in neuron injury,astrocytosis and microgliosis after focal cerebral ischemia in ***3379 is a selective CysLT2 receptor antagonist,whether HAMI3379 can exert protective effect on focal cerebral ischemia in rats remains *** chloral hydrate anesthesia,transient focal cerebral ischemia was induced in rats by 30min of middle cerebral artery occlusion(MCAO),followed by 24h of *** as vehicle,pranlukast(0.1mg/kg,i.p.) as a positive control or HAMI3379(i.c.v.)at the doses of 1,10,100 ng was administered at 30 min before induction of ***,24h after MCAO behavior assessment,brain edema, infarct volume,neuronal damage and IgG exudation were ***3379 at the doses of 10,100 ng could decrease lesion volume,brain edema,IgG exudation,neuron degeneration,and neuron *** protective effect was similar to CysLTl receptor antagonist ***3379 at the dose of lng had no obvious effect on the cerebral ischemia injury. Thus,HAMI3339 has a dose-dependent neuroprotective effects on transient focal cerebral ischemia in rats,with an effective dose range of 10-100 *** findings further support CysLT2 receptor plays regulatory roles in acute neuron injury and the therapeutic potential of CysLT2 receptor antagonists in the treatment of cerebral ischemia at earlier *** studies need to be conducted in order to determine the effects of CysLT2 receptor on the late phase of ischemic injury and the potential mechanism.

关键词： WordsHAMI 3379 Cysteinyl leukotriene receptor 2 Cysteinyl leukotriene receptor 1 MCAO Neuroprotection

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Nuclear Science and Techniques 2024年第7期35卷 137-146页

作者： Yao Li Shu-Wan Shen sa Wang Ben-Wei Zhang Key Laboratory of Quark&Lepton Physics(MOE)and Institute of Particle Physics Central China Normal UniversityWuhan430079China College of Science China Three Gorges UniversityYichang443002China Center for Astronomy and Space Sciences and Institute of Modern Physics China Three Gorges UniversityYichang443002China Guangdong-Hong Kong Joint Laboratory of Quantum Matter Guangdong Provincial Key Laboratory of Nuclear ScienceSouthern Nuclear Science Computing CenterSouth China Normal UniversityGuangzhou510006China

We present a theoretical study of the medium modifications of the Pr balance(xJ)of dijets in Xe+Xe cllions at√SNN=5.44 *** initial production of dijets was carried out using the POWHEG+PYTHLA8 prescription,which matches the next-to-leading-order(NLO)QCD matrix elements with the parton shower(PS)*** SHELL model described the in-medium evolution of nucleus-nucleus collisions using a transport *** theoretical results of the dijet xJ in the Xe+Xe collisions exhibit more imbalanced distributions than those in thep+p collisions,consistent with recently reported ATLAS *** utilizing the Interleaved Flavor Neutralisation,an infrared-and-collinear-safe jet flavor algorithm,to identify the flavor of the reconstructed jets,we classify dijets processes into three categories:glucn-gluon(gg),quark-gluon(qg),and quark-quark(qq),and investigated the respective medium modification *** fraction changes of the 9g,qg,and qq components of the dijet sample in Xe+Xe *** is shown that the increased fraction of qg component at a small xJ contributes to the imbalanceof the dijet;in particular,the 9192(quark-jet-leading)dijets experience more significant asymmetric energy loss than the 9192(gluon-jet-leading)dijets traversing *** comparing the O(xz)=(x)pp-(xJ)AA ofincdusive,cc and b6 dijets in Xe+Xe cllions,we observe△(xj)inal.>△(xj)cε>△(xj)***,Pxe,Pb,the ratios of the nuclear modification factors of dijets in Xe+Xe to those in Pb+Pb,were calculated,which indicates that the yield suppression of dijets in Pb+Pb is more pronounced than that in Xe+Xe owing to the larger radius of the lead nucleus.

关键词： Heavy-ion collisions Quark-gluon plasma Jet quenching Transverse momentum balance

Spatiotemporal changes of gross primary productivity and its response to drought in the Mongolian Plateau under climate change

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Journal of Arid Land 2024年第1期16卷 46-70页

作者： ZHAO Xuqin LUO Min MENG Fanhao sa Chula BAO Shanhu BAO Yuhai College of Geographical Science Inner Mongolia Normal UniversityHohhot 010022China Inner Mongolia Key Laboratory of Remote Sensing and Geographic Information Systems Hohhot 010022China

Gross primary productivity(GPP)of vegetation is an important constituent of the terrestrial carbon sinks and is significantly influenced by *** the impact of droughts on different types of vegetation GPP provides insight into the spatiotemporal variation of terrestrial carbon sinks,aiding efforts to mitigate the detrimental effects of climate *** this study,we utilized the precipitation and temperature data from the Climatic Research Unit,the standardized precipitation evapotranspiration index(SPEI),the standardized precipitation index(SPI),and the simulated vegetation GPP using the eddy covariance-light use efficiency(EC-LUE)model to analyze the spatiotemporal change of GPP and its response to different drought indices in the Mongolian Plateau during *** main findings indicated that vegetation GPP decreased in 50.53% of the plateau,mainly in its northern and northeastern parts,while it increased in the remaining 49.47%***,meadow steppe(78.92%)and deciduous forest(79.46%)witnessed a significant decrease in vegetation GPP,while alpine steppe(75.08%),cropland(76.27%),and sandy vegetation(87.88%)recovered *** aridification areas accounted for 71.39% of the affected areas,while 28.53% of the areas underwent severe aridification,mainly located in the south and central ***,the warming aridification areas of desert steppe(92.68%)and sandy vegetation(90.24%)were *** warming was found to amplify the sensitivity of coniferous forest,deciduous forest,meadow steppe,and alpine steppe GPP to ***,the drought sensitivity of vegetation GPP in the Mongolian Plateau gradually decreased as altitude *** cumulative effect of drought on vegetation GPP persisted for 3.00-8.00 *** findings of this study will improve the understanding of how drought influences vegetation in arid and semi-arid areas.

关键词： gross primary productivity(GPP) climate change warming aridification areas drought sensitivity cumulative effect duration(CED) Mongolian Plateau

基于开放数据的云南迪庆藏族自治州综合交通优势度

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科学技术与工程 2024年第21期24卷 9132-9140页

作者：王晓云撒莹李志英杨晓辉云南大学建筑与规划学院昆明650500 云南金田建筑规划设计有限公司昆明650032

国土空间规划中科学评价规划区域的交通基础设施发展水平,对提高规划科学性具有现实意义。利用低成本开放数据,从交通本质出发,构建由4个因子组成的评价模型,在云南迪庆藏族自治州国土空间规划中进行综合交通优势度研究。结果表明:利用... 详细信息

国土空间规划中科学评价规划区域的交通基础设施发展水平,对提高规划科学性具有现实意义。利用低成本开放数据,从交通本质出发,构建由4个因子组成的评价模型,在云南迪庆藏族自治州国土空间规划中进行综合交通优势度研究。结果表明:利用开放数据可降低模型应用难度,提高评价精度和可靠性;评价显示迪庆藏族自治州综合交通优势度与其自然地理空间分布特征吻合,呈明显的“带”状分布,因此未来应优先提升澜沧江带的优势度;基于数据分析利于布局时“以流定形”,分析表明缺乏快速道路体系是迪庆藏族自治州交通供给侧的最大短板,在城市网络中其对外交通在西藏、四川方向优势度较弱,通道建设亟待加强。研究结果可为数慧赋能实现交通系统与“三生空间”融合发展和在地市级国土空间规划中应用综合交通优势理论提供参考价值。

关键词：综合交通优势度开放数据交通成本城市网络