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Study on discharge characteristics of low-temperature sub-atmospheric pressure under steep change rate voltage

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Plasma Science and Technology 2025年第1期27卷 52-61页

作者： Bo ZHU Ximu HAN He su Xiangjie MA Guoyan WU MOE Key Laboratory of Engineering Dielectrics and its Application Harbin University of Science and TechnologyHarbin 150080People’s Republic of China Huaneng Guanyun Clean Energy Power Generation Co.Ltd. Lianyungang 222228People’s Republic of China

Aiming at the gas discharge problem in electric aircraft,this work studies the gas discharge characteristics at low-temperature sub-atmospheric pressure.A gas discharge shooting platform was built,and the discharge process was photographed by intensified charge-coupled device(ICCD).A two-dimensional axisymmetric model of needle-plate electrode gas discharge was established,and three sets of Helmholtz equations were used to solve the *** results show that under the same voltage,the electric field intensity in the discharge process increases first,then decreases and finally increases *** discharge speed increases with the increase of altitude,and the electron density in the streamer decreases with the increase of *** development speed of the streamer in the middle stage is higher than that in the early stage,and the speed increases more obviously with the increase of *** development speed of the streamer in the later stage is lower than that in the middle stage,but with the increase of altitude,the development speed of the streamer in the later stage is higher than that in the middle stage.

关键词： electric aircraft gas discharge steep change rate voltage electric field intensity electron density

Meningeal lymphatic vessel crosstalk with central nervous system immune cells in aging and neurodegenerative diseases

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Neural Regeneration Research 2025年第3期20卷 763-778页

作者： Minghuang Gao Xinyue Wang Shijie su Weicheng Feng Yaona Lai Kongli Huang Dandan Cao Qi Wang Science and Technology Innovation Center Guangzhou University of Chinese MedicineGuangzhouGuangdong ProvinceChina Institute of Clinical Pharmacology Guangzhou University of Chinese MedicineGuangzhouGuangdong ProvinceChina The Sixth Affiliated Hospital Sun Yat-sen UniversityGuangzhouGuangdong ProvinceChina

Meningeal lymphatic vessels form a relationship between the nervous system and periphery, which is relevant in both health and disease. Meningeal lymphatic vessels not only play a key role in the drainage of brain metabolites but also contribute to antigen delivery and immune cell activation. The advent of novel genomic technologies has enabled rapid progress in the characterization of myeloid and lymphoid cells and their interactions with meningeal lymphatic vessels within the central nervous system. In this review, we provide an overview of the multifaceted roles of meningeal lymphatic vessels within the context of the central nervous system immune network, highlighting recent discoveries on the immunological niche provided by meningeal lymphatic vessels. Furthermore, we delve into the mechanisms of crosstalk between meningeal lymphatic vessels and immune cells in the central nervous system under both homeostatic conditions and neurodegenerative diseases, discussing how these interactions shape the pathological outcomes. Regulation of meningeal lymphatic vessel function and structure can influence lymphatic drainage, cerebrospinal fluid-borne immune modulators, and immune cell populations in aging and neurodegenerative disorders, thereby playing a key role in shaping meningeal and brain parenchyma immunity.

关键词： central nervous system meningeal lymphatic vessels immunity myeloid cells lymphatic cells neurodegenerative disease

Activity and Stoichiometry of Soil Enzymes in Aggregates of Different Soil Types in subtropical Forests

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Huanjing Kexue/Environmental Science 2025年第3期46卷 1716-1728页

作者： su, Zhi-Feng Huang, De-Zhou Zhu, Zhi-yi Chen, Rong-Shu Dai, Ting-Hao Liang, Jian-Hong Zhu, Jing Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection Ministry of Education Guangxi Normal University Guilin541006 China College of Environment and Resources Guangxi Normal University Guilin541006 China Guangxi Key Laboratory of Karst Dynamics Ministry of Natural Resources/Guangxi Institute of Karst Geology Chinese Academy of Geological Sciences Guilin541004 China Guangxi Key Laboratory of Environmental Processes and Remediation in Ecologically Fragile Regions Guilin541006 China

To reveal the differences in soil microbial nutrient limitation and nutrient availability at the aggregate scale of soil types in a subtropical forest in China,the O/A horizon(0-3 cm and 0-7 cm,respectively)and AB horizon(below O/A horizon to 20 cm depth)of typical acidic red soil and neutral limestone soil in Northern Guangxi were studied. The activities of carbon-acquiring enzymes(sucrase,amylase,β-1,4-glucosidase(BG)),nitrogen-acquiring enzymes(urease,β-1,4-N-acetyl-glucosaminidase(NAG),leucine amino peptidase(LAP)),and phosphorus-acquiring enzymes(phytase and acid phosphatase(AP))in different aggregate sizes were determined to reveal the variation in soil enzyme stoichiometry characteristics. The results showed that the limestone soil had higher nitrogen-acquiring enzyme activity compared to that in the red soil,with urease,NAG,and LAP activities being 38.84%,123.89%,and 4.06% higher,respectively. The differences in carbon- and phosphorus-acquiring enzyme activities between the two soils were not significant. The overall soil enzyme activities in the O/A horizon were higher than in the AB horizon for both red soil and limestone soil. Soil total organic carbon and pH were identified as key factors influencing soil enzyme activities. Most enzyme activities(BG,urease,NAG,and phytase)were higher in micro-aggregates(0.1-0.25 mm and © 2025 Science Press. All rights reserved.

关键词：红壤石灰性土壤团聚体酶活性酶化学计量比亚热带森林

Reduced mesencephalic astrocyte-derived neurotrophic factor expression by mutant androgen receptor contributes to neurodegeneration in a model of spinal and bulbar muscular atrophy pathology

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Neural Regeneration Research 2025年第9期20卷 2655-2666页

作者： yiyang Qin wenzhen Zhu Tingting Guo yiran Zhang Tingting Xing Peng yin Shihua Li Xiao-Jiang Li su Yang Guangdong Key Laboratory of Non-human Primate Research Key Laboratory of CNS Regeneration(Ministry of Education)Guangdong–HongKong–Macao Institute of CNS RegenerationJinan UniversityGuangzhouGuangdong ProvinceChina

Spinal and bulbar muscular atrophy is a neurodegenerative disease caused by extended CAG trinucleotide repeats in the androgen receptor gene,which encodes a ligand-dependent transcription facto *** mutant androgen receptor protein,characterized by polyglutamine expansion,is prone to misfolding and forms aggregates in both the nucleus and cytoplasm in the brain in spinal and bulbar muscular atrophy *** aggregates alter protein-protein interactions and compromise transcriptional *** this study,we reported that in both cultured N2a cells and mouse brain,mutant androgen receptor with polyglutamine expansion causes reduced expression of mesencephalic astrocyte-de rived neurotrophic *** n of mesencephalic astrocyte-derived neurotrophic factor amelio rated the neurotoxicity of mutant androgen receptor through the inhibition of mutant androgen receptor *** down endogenous mesencephalic astrocyte-derived neurotrophic factor in the mouse brain exacerbated neuronal damage and mutant androgen receptor *** findings suggest that inhibition of mesencephalic astrocyte-derived neurotrophic factor expression by mutant androgen receptor is a potential mechanism underlying neurodegeneration in spinal and bulbar muscular atrophy.

关键词： androgen receptor mesencephalic astrocyte-derived neurotrophic factor mouse model neurodegeneration neuronal loss neurotrophic factor polyglutamine disease protein misfolding spinal and bulbar muscular atrophy transcription factor

Anti-fouling Hydrophobic Coatings via Single-step Silane Hydrolysis

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Chemical Research in Chinese Universities 2025年第1期41卷 106-112页

作者： LI Saiya HOU Qinwen CHEN Huiping JIA Yule ZHANG Dongyang LIU Yunge ZHANG Jing su Yuan WANG Dianyu School of Chemical Engineering Zhengzhou UniversityZhengzhou450001P.R.China School of Material Science and Engineering Beijing Institute of TechnologyBeijing100081P.R.China

superhydrophobic coatings have tremendous potential for cotton fabric applications in antifouling and *** great scientific and industrial interest in waterproof cellulosic cotton,its application in cotton fibres has been hindered by complicated processes,templates requirement,and limitations in scale-up ***,we prepared a hydrophobic coating using one-step hydrolysis of *** the reaction of long-chain organosilanes with acid,micro/nanostructures with low surface energy were constructed on the cotton fabric ***,the coating not only imparts self-cleaning and anti-bacterial adhesion properties to cotton fabrics,but also maintains a contact angle of over 140°after treatment with acid,alkali,organic solvents and extreme *** addition,the coating can be applied to a wide range of metals,plastics and paper to provide antifouling *** study believes that these excellent overall properties possess enormous potential for various applications involving anti-fouling.

关键词： Nanostructure Hydrophobicity Anti-fouling Silane hydrolysis

A Verification Theorem for Feedback Nash Equilibrium in Multiple-Player Nonzero-sum Impulse Game

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IEEE/CAA Journal of Automatica Sinica 2025年第3期12卷 648-650页

作者： Ruihai Li Yaoyao Tan Xiaojie su Jiangshuai Huang the School of Automation Chongqing University IEEE

Dear Editor,This letter addresses the impulse game problem for a general scope of deterministic, multi-player, nonzero-sum differential games wherein all participants adopt impulse controls. Our objective is to formulate this impulse game problem with the modified objective function including interaction costs among the players in a discontinuous fashion, and subsequently, to derive a verification theorem for identifying the feedback Nash equilibrium strategy.

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Uncovering fantastic synergistic lithium adsorption with manganese-titanium based composite nanospheres:Mild synthesis and molecular dynamics simulation insights

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Journal of Energy Chemistry 2025年第2期101卷 52-67页

作者： Yameng Wang Zi-Yu Liu Yubei su Yu Liu Aoqun Liu Xiaoye Zhang Yugang Huang Liyun Zhang Haisheng Chen Wancheng Zhu Department of Chemical Engineering Qufu Normal University Institute of Engineering Thermophysics Chinese Academy of Sciences State Key Laboratory of Organic-Inorganic Composites Beijing University of Chemical Technology

In light of the burgeoning energy technology sector and the ever-growing demand for lithium across diverse industrial domains,conventional lithium extraction methods have been proven inadequate due to their limited production capacity and high operational *** work introduces a novel approach to the manganese-titanium based composite HMTO（Mn:Ti=1:4） lithium ion-sieve（LIS） nanospheres,employing lithium acetate dihydrate,manganese carbonate and titanium dioxide P25 as the primary *** nanospheres exhibit relatively uniform spherical morphology,narrow size distribution,small average particle size（ca.55 nm）,large specific surface area(43.58 m2g-1) and high surface O2-content（59.01%）.When utilized as the adsorbents for Li+ions,the HMTO（Mn:Ti=1:4） LIS demonstrates a fast adsorption rate,approaching equilibrium within 6.0 h with an equilibrium adsorption capacity（qe）of 79.5 mg g-1and a maximum adsorption capacity（qm） of 87.26 mg g-1(initial concentration CO:1.8 g L-1).In addition,the HMTO（Mn:Ti=1:4） also delivers a high lithium extraction from the simulated high magnesium-lithium molar ratio salt lake brine（Mg:Li=103）,achieving a qeof 33.85 mg g-1along with a remarkable selectivity(αMgLi=2192.76).Particularly,the HMTO（Mn:Ti=1:4） LIS showcases a satisfactory recycling adsorption *** adsorption capacity remains at a high level,even that determined after the 5th cycle(55.45 mg g-1) surpasses that of the most recently reported ***,the fantastic synergistic lithium adsorption mechanism is deliberately uncovered by leveraging the ion exchange principles and molecular dynamics（MD） simulations.

关键词： Adsorption performance Ion exchange Lithium ion-sieves Manganese titanium composite Salt lake brine lithium extraction

On Global and Local Properties of the Trajectories of Gaussian Random Fields——A Look Through the Set of Limit Points

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Acta Mathematica Sinica,English Series 2020年第2期36卷 137-152页

作者： wen Sheng WANG Zhong Gen su yi Min XIAO School of Economics Hangzhou Dianzi UniversityHangzhou 310018P.R.China School of Mathematical Sciences Zhejiang UniversityHangzhou 310027P.R.China Department of Statistics and Probability Michigan State UniversityMI 48824USA

This paper studies the global and local properties of the trajectories of Gaussian random fields with stationary increments and proves sufficient conditions for Strassen's functional laws of the iterated logarithm at zero and infinity *** sets of limit points of those Gaussian random fields are *** main results are applied to fractional Riesz-Bessel processes and the sets of limit points of this field are obtained.

关键词： Fractional Riesz-Bessel processes functional law of the iterated logarithm Gaussian random fields large deviation principle

Herders'willingness to accept compensation for grassland grazing ban in Northwest China

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Journal of Integrative Agriculture 2025年第1期24卷 366-379页

作者： Huifang Liu Lingling Hou Zhibiao Nan Jikun Huang Liufang su China Center for Agricultural Policy(CCAP) School of Advanced Agricultural SciencesPeking UniversityBeijing 100871China State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems College of Pastoral Agriculture Science and TechnologyLanzhou UniversityLanzhou 730020China College of Economics&Management South China Agricultural UniversityGuangzhou 510642China

Payment for Ecosystem Services(PES)has been widely acknowledged as an effective tool for mitigating grassland degradation and enhancing ecosystem services ***,critical factors,such as herders'willingness to accept(WTA)preferences and compensation expectations,are often overlooked,leading to insufficient effectiveness of PES *** study focused on grassland ecological compensation policy(GECP),quantifying herders'WTA compensation for grassland grazing *** face-to-face surveys and employing the contingent valuation method,we estimated households'WTA for participating in a grassland conservation program to bolster ecosystem service *** findings indicated that herders required an average compensation of 237 CNY mu^(-1)yr^(-1)to engage in the grazing ban ***,herders'environmental awareness positively influenced their willingness to participate,whereas larger family sizes were negatively correlated with ***,herders in better health,with higher livestock incomes or categorized as semi-herders,tended to accept lower compensation *** insights are crucial for improving the effectiveness of GECP and provide valuable reference points for similar analyses in economically disadvantaged and ecologically fragile regions.

关键词： anchoring effect conditional value method double-bounded dichotomous choice model ecosystem services grassland system willingness to accept