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Cold plasma promotes Sertoli cell proliferation via AMPK–mTOR signaling pathway

Journal of Integrative Agriculture 2022年第9期21卷 2700-2719页

作者： ZHANG Jiao-jiao LI Ya-qi SHI Mei wang yu-sha TANG Yao wang Xian-zhong Chongqing Key Laboratory of Forage and Herbivore College of Veterinary MedicineSouthwest UniversityChongqing 400715P.R.China

This study investigated cold plasmas for multiple biological applications. Our previous work has found dielectric barrier discharge plasma improves chicken sperm quality. The number of Sertoli cells(SCs) decides spermatogenesis. However, whether cold plasma can regulate SC proliferation remains unclear. This study explored the effects of cold plasma on immature chicken SC proliferation and the regulation mechanism. Results showed that cold plasma exposure at 2.4 W for 30 s twice with an interval of 6 h produced(P<0.05) the maximum SC viability, cell growth, and cell cycle progression. SC proliferation-promoting effect of cold plasma treatment was regulated by increasing(P<0.05) the adenosine triphosphate production and the respiratory enzyme activity in the mitochondria. This process was potentially mediated by the adenosine monophosphate-activated protein kinase(AMPK)–mammalian target of rapamycin(m TOR) signaling pathway, which was regulated by the micro RNA(mi RNA) targeting regulation directly and by the intracellular reactive oxygen species homeostasis indirectly. The cold plasma treatment increased(P<0.01) the mi R-7450-5 p expression and led to a decreased(P<0.01) AMPKα1 level. On the other hand, mi R-100-5 p expression was reduced(P<0.05) and led to an increased(P<0.05) m TOR level in SCs. A single-stranded synthetic mi R-7450-5 p antagomir and a double-stranded synthetic mi R-100-5 p agomir reduced(P<0.05) the SC proliferation. However, this could be ameliorated(P<0.05) by the cold plasma treatment. Our findings suggest that appropriate cold plasma treatment provides a safe strategy to improve SC proliferation, which is beneficial to elevating male chicken reproductive capacity.

关键词： cold plasma Sertoli cell proliferation AMPK mTOR miRNAs

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MXene Hybridized Polymer with Enhanced Electromagnetic Energy Harvest for Sensitized Microwave Actuation and Self-Powered Motion Sensing

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NANO-MICRO LETTERS 2025年第1期17卷 1-15页

作者： wang, yu-Ze wang, yu-Chang Liu, Ting-Ting Zhao, Quan-Liang Li, Chen-sha Cao, Mao-Sheng Beijing Inst Technol Sch Mat Sci & Engn Beijing 100081 Peoples R China Peking Univ Sch Mat Sci & Engn Beijing 100871 Peoples R China North China Univ Technol Sch Mech & Mat Engn Beijing 100144 Peoples R China Heilongjiang Univ Minist Educ Peoples Republ China Key Lab Funct Inorgan Mat Chem Harbin 150080 Peoples R China

Polymeric microwave actuators combining tissue-like softness with programmable microwave-responsive deformation hold great promise for mobile intelligent devices and bionic soft robots. However, their application is challenged by restricted electromagnetic sensitivity and intricate sensing coupling. In this study, a sensitized polymeric microwave actuator is fabricated by hybridizing a liquid crystal polymer with Ti3C2Tx (MXene). Compared to the initial counterpart, the hybrid polymer exhibits unique space-charge polarization and interfacial polarization, resulting in significant improvements of 230% in the dielectric loss factor and 830% in the apparent efficiency of electromagnetic energy harvest. The sensitized microwave actuation demonstrates as the shortened response time of nearly 10 s, which is merely 13% of that for the initial shape memory polymer. Moreover, the ultra-low content of MXene (up to 0.15 wt%) benefits for maintaining the actuation potential of the hybrid polymer. An innovative self-powered sensing prototype that combines driving and piezoelectric polymers is developed, which generates real-time electric potential feedback (open-circuit potential of similar to 3 mV) during actuation. The polarization-dominant energy conversion mechanism observed in the MXene-polymer hybrid structure furnishes a new approach for developing efficient electromagnetic dissipative structures and shows potential for advancing polymeric electromagnetic intelligent devices.

关键词： Microwave absorption Electromagnetic response Energy harvest Self-sensing Soft actuator

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互联网使用对政治机构信任的影响研究：民主政治的环境因素

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经济社会体制比较 2017年第1期 164-177页

作者：游宇王正绪余莎西南财经大学公共管理学院复旦大学国际关系与公共事务学院上海财经大学公共经济与管理学院

文章关注在不同政治制度下,公众的互联网使用如何影响其政治机构信任度。通过利用最新的世界价值观以及相关数据库来构建个体与国家的多层次的实证模型,研究发现:个体的互联网使用频率显著拉低了公众政治机构信任度;更重要的,这一负面... 详细信息

文章关注在不同政治制度下,公众的互联网使用如何影响其政治机构信任度。通过利用最新的世界价值观以及相关数据库来构建个体与国家的多层次的实证模型,研究发现:个体的互联网使用频率显著拉低了公众政治机构信任度;更重要的,这一负面效应在民主程度较低的国家更为强烈,因为相较于成熟的民主国家,这些国家较低的非传统政治参与会加剧互联网的负面影响。通过熵均衡对样本进行平衡性处理后,上述发现依然稳健。由此可见,互联网带给非民主国家的政治冲击是国家治理与民主转型的双重压力。

关键词：政治机构信任互联网使用非传统政治参与民主化

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甘肃省春玉米干旱灾损评估指标研究

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中国农业气象 2013年第1期34卷 100-105页

作者：张钛仁王瑜莎白月明甘肃农业大学资源与环境学院兰州730070 中国气象局北京100081 辽宁省阜新市气象局阜新123000 中国气象科学研究院北京100081

利用甘肃省春玉米主要种植区5个典型代表站,1985-2007年4-9月逐日降水量、CI指数、玉米单产和发育阶段的需水量等资料,尝试构建以CI和水分适宜度(降水量/需水量比值)为参数的定量评估指标即DI指数,利用其与相对气象产量的关系划分干旱... 详细信息

利用甘肃省春玉米主要种植区5个典型代表站,1985-2007年4-9月逐日降水量、CI指数、玉米单产和发育阶段的需水量等资料,尝试构建以CI和水分适宜度(降水量/需水量比值)为参数的定量评估指标即DI指数,利用其与相对气象产量的关系划分干旱指标等级,得到甘肃省春玉米干旱灾损评估的新方法。实证分析结果表明,从代表站的春玉米生长季(4月11日-9月30日)DI指数的逐年变化看,靖远、永昌变化最小且数值最低,榆中次之,西峰和武都变化最大且数值最高;从拔节-吐丝期DI指数的逐年变化看,西峰和武都波动最明显且数值最大,靖远和榆中波动最小且数值最低,所得评估结果与研究区实况较一致。而且DI指数与以往笼统的干旱指标相比,数据资料相对易获取,计算简单,既具有气象学意义,又具有生物学意义,可用于研究不同地区具体作物的干旱灾损评估。

关键词：甘肃春玉米干旱评估指标

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Silk damping in scalar-induced gravitational waves: a novel probe for new physics

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 79-85页

作者： Yan-Heng yu Sai wang Theoretical Physics Division Institute of High Energy Physics Chinese Academy of Sciences School of Physics University of Chinese Academy of Sciences

Silk damping is well known in the study of cosmic microwave background（CMB） and accounts for suppression of the angular power spectrum of CMB on large angular multipoles. In this article, we study the effect of Silk damping on the scalar-induced gravitational waves（SIGWs）. Resulting from the dissipation of cosmic fluid, the Silk damping notably suppresses the energydensity spectrum of SIGWs on scales comparable to a diffusion scale at the decoupling time of weakly-interacting particles. The effect offers a novel observable for probing the underlying particle interaction, especially for those mediated by heavy gauge bosons beyond the standard model of particles. We anticipate that pulsar timing arrays are sensitive to gauge bosons with mass ～10～3-10～4 GeV, while space-and ground-based interferometers to those with mass ～10～7-1012GeV, leading to essential complements to on-going and future experiments of high-energy physics.

关键词： scalar-induced gravitational waves Silk damping new physics

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High-energy-density lithium manganese iron phosphate for lithium-ion batteries: Progresses, challenges, and prospects

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Journal of Energy Chemistry 2025年第1期100卷 1-17页

作者： Bokun Zhang Xiaoyun wang Shuai wang Yan Li Libo Chen Handong Jiao Zhijing yu Jiguo Tu State Key Laboratory of Advanced Metallurgy University of Science and Technology Beijing Research Institute for Intelligent Wearable Systems The Hong Kong Polytechnic University Institute of Advanced Structure Technology Beijing Institute of Technology

The soaring demand for smart portable electronics and electric vehicles is propelling the advancements in high-energy–density lithium-ion *** manganese iron phosphate (LiMnxFe1-xPO4) has garnered significant attention as a promising positive electrode material for lithium-ion batteries due to its advantages of low cost,high safety,long cycle life,high voltage,good high-temperature performance,and high energy *** LiMnxFe1-xPO4has made significant breakthroughs in the past few decades,there are still facing great challenges in poor electronic conductivity and Li-ion diffusion,manganese dissolution affecting battery cycling performance,as well as low tap *** review systematically summarizes the reaction mechanisms,various synthesis methods,and electrochemical properties of LiMnxFe1-xPO4to analyze reaction processes accurately and guide material ***,the main challenges currently faced are concluded,and the corresponding various modification strategies are discussed to enhance the reaction kinetics and electrochemical performance of LiMnxFe1-xPO4,including multi-scale particle regulation,heteroatom doping,surface coating,as well as microscopic morphology ***,in view of the current research challenges faced by intrinsic reaction processes,kinetics,and energy storage applications,the promising research directions are *** importantly,it is expected to provide key insights into the development of high-performance and stable LiMnxFe1-xPO4materials,to achieve practical energy storage requirements.

关键词： Lithium manganese iron phosphate High energy density Lithium-ion batteries Reaction mechanism Tap density

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草莓FveRPM1基因的鉴定及功能分析

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沈阳农业大学学报 2022年第6期53卷 641-649页

作者：关宇涵王雨沙李晓明李贺沈阳农业大学园艺学院/辽宁省草莓育种及优质栽培重点实验室沈阳110161

RPM1属于CC-NBS-LRR类蛋白激酶,在植物抗病反应中起重要作用,其功能在拟南芥、水稻等植物中有深入研究,但在草莓上还鲜有报道。以草莓为试材,克隆FveRPM1基因的编码区序列,发现其长度为2748bp,编码915个氨基酸,属于膜表达蛋白。进化关... 详细信息

RPM1属于CC-NBS-LRR类蛋白激酶,在植物抗病反应中起重要作用,其功能在拟南芥、水稻等植物中有深入研究,但在草莓上还鲜有报道。以草莓为试材,克隆FveRPM1基因的编码区序列,发现其长度为2748bp,编码915个氨基酸,属于膜表达蛋白。进化关系分析显示草莓FveRPM1与苹果MdRPM1的亲缘关系最近,而与乌拉尔图小麦TuRPM1的亲缘关系较远。利用RTqPCR技术检测了FveRPM1基因在草莓不同器官、不同激素浓度及病菌处理下的表达量,结果表明:FveRPM1基因在草莓根中高表达,而在新叶中的表达量最低;不同浓度的MeJA和SA分别处理Ruegen草莓12h后FveRPM1基因的表达水平明显上升,其中1μmol·L^(-1)的MeJA处理12h后FveRPM1基因的表达量最高,为对照的13.2倍,而0.1μmol·L^(-1)的SA处理12h后FveRPM1基因的表达量最高,为对照的14倍;灰霉病菌处理能显著增加FveRPM1基因的表达量,同时也能显著增强POD、CAT和SOD的活性。利用农杆菌介导的草莓果实瞬时转化试验,将构建好的FveRPM1基因的过表达载体和干扰载体分别转入艳丽和月华草莓白果期果实中,待果实转红时接种灰霉病菌后发现,过表达FveRPM1基因能够增强草莓果实对灰霉病的抗性,而沉默该基因则降低了草莓果实对灰霉病的抗性,并且FveRPM1基因过表达果实的SOD酶活性最强,FveRPM1基因沉默果实的SOD酶活性最弱,CAT酶活性表现相同的规律,说明FveRPM1基因参与草莓果实对灰霉病的防御响应。研究结果为利用分子手段进行草莓抗病育种奠定一定的理论基础。

关键词：草莓灰霉病 FveRPM1 功能

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Boosting bidirectional sulfur conversion enabled by introducing boron-doped atoms and phosphorus vacancies in Ni2P for lithium-sulfur batteries

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Journal of Energy Chemistry 2025年第1期100卷 760-769页

作者： Lin Peng yu Bai Hang Li Meixiu Qu Zhenhua wang Kening Sun Advanced Research Institute of Multidisciplinary Science Beijing Institute of Technology Beijing Key Laboratory of Chemical Power Source and Green Catalysis School of Chemistry and Chemical Engineering Beijing Institute of Technology

Lithium-sulfur （Li-S） batteries have gained great attention due to the high theoretical energy density and low cost,yet their further commercialization has been obstructed by the notorious shuttle effect and sluggish redox ***,we supply a strategy to optimize the electron structure of Ni2P by concurrently introducing B-doped atoms and P vacancies in Ni2P （Vp-B-Ni2P）,thereby enhancing the bidirectional sulfur *** study indicates that the simultaneous introduction of B-doped atoms and P vacancies in Ni2P causes the redistribution of electron around Ni atoms,bringing about the upward shift of d-band center of Ni atoms and effective d-p orbital hybridization between Ni atoms and sulfur species,thus strengthening the chemical anchoring for lithium polysulfides （LiPSs） as well as expediting the bidirectional conversion kinetics of sulfur ***,theoretical calculations reveal that the incorporation of B-doped atoms and P vacancies in Ni2P selectively promotes Li2S dissolution and nucleation ***,the Li-S batteries with Vp-B-Ni2P-separators present outstanding rate ability of 777 m A h g-1at 5 C and high areal capacity of 8.03 mA h cm-2under E/S of 5μL mg-1and sulfur loading of 7.20 mg *** work elucidates that introducing heteroatom and vacancy in metal phosphide collaboratively regulates the electron structure to accelerate bidirectional sulfur conversion.

关键词： Lithium sulfur batteries

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Fluorinated poly(p-triphenylene isatin) anion exchange membranes based on hydrophilic hydroxyl side chain modulation for fuel cells

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Journal of Energy Chemistry 2025年第1期100卷 702-709页

作者： Yiman Gu Yanchao Zhang Zhanyu Li Yijia Lei Baozeng Sun Xiaoyu yu Zhe wang College of Chemistry and Life Science Changchun University of Technology College of Chemical Engineering Changchun University of Technology School of Materials Science and Engineering Changchun University of Technology Key Laboratory of Advanced Functional Polymer Membrane Materials of Jilin Province

The development of alkaline fuel cells is moving forward at an accelerated pace,and the application of ether-free bonded polymers to anion exchange membranes （AEMs） has been widely ***,the question of the“trade-off”between AEM ionic conductivity and dimensional stability remains *** strategy of inducing microphase separation to improve the performance of AEM has attracted much attention recently,but the design of optimal molecular structures is still being ***,this work introduced different ratios of 3-bromo-1,1,1-trifluoroacetone （x=40,50,and 60） into the main chain of poly（p-terphenylene isatin）.Because fluorinated groups have excellent hydrophobicity,hydrophilic hydroxyl-containing side chains are introduced to jointly adjust the formation of phase separation *** results show that PTI-PTF50-NOH AEM with the appropriate fluorinated group ratio has the best ionic conductivity and alkali stability under the combined effect of *** has an ionic conductivity of 133.83 mS cm-1at 80°*** addition,the OH-conductivity remains at 89%of the initial value at 80°C and 3 M KOH for 1056 h of *** cell polarization curve based on PTI-PTF50-NOH shows a power density of 734.76 mW cm-2at a current density of 1807.7 mA cm-2.

关键词： Anion exchange membranes Poly(p-terphenylene isatin) Hydrophilic-hydrophobic phase separation Fluorinated group

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Mechanistic insight into the synergy between nickel single atoms and nanoparticles on N-doped carbon for electroreduction of CO2

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Journal of Energy Chemistry 2025年第1期100卷 327-336页

作者： Mingdong Sun Wenwen Guan Cailing Chen Chao Wu Xiaoling Liu Biao Meng Tao Chen yu Han Jun wang Shibo Xi yu Zhou State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemical Engineering Nanjing Tech University Advanced Membranes and Porous Materials Center Physical Sciences and Engineering Division King Abdullah University of Science and Technology Institute of Sustainability for Chemicals Energy and Environment A*STAR (Agency for Science Technology and Research) College of Materials Science and Engineering Sichuan University

The synergy of single atoms （SAs） and nanoparticles （NPs） has demonstrated great potential in promoting the electrocatalytic carbon dioxide reduction reaction （CO2RR）;however,the rationalization of the SAs/NPs proportion remains one challenge for the catalyst ***,a Ni2+-loaded porous poly（ionic liquids）(PIL) precursor synthesized through the free radical self-polymerization of the ionic liquid monomer,1-allyl-3-vinylimidazolium chloride,was pyrolyzed to prepare the Ni,N co-doped carbon materials,in which the proportion of Ni SAs and NPs could be facilely modulated by controlling the annealing *** catalyst Ni-NC-1000 with a moderate proportion of Ni SAs and NPs exhibited high efficiency in the electrocatalytic conversion of CO2into *** Ni K-edge X-ray absorption near-edge structure （XANES） spectra and theoretical calculations were conducted to gain insight into the synergy of Ni SAs and *** charge transfer from Ni NPs to the surrounding carbon layer and then to the Ni SAs resulted in the electron-enriched Ni SAs active *** the electroreduction of CO2,the coexistence of Ni SAs and NPs strengthened the CO2activation and the affinity towards the key intermediate of*COOH,lowering the free energy for the potential-determining*CO2→*COOH step,and therefore promoted the catalysis efficiency.

关键词： Single atom catalyst Synergy effect Carbon catalyst Electrocatalysis

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