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介电法土壤水分传感器研究进展

农业技术与装备 2024年第5期 20-22,25页

作者：李泽陈杏子宋宇航张熙良王江涛阿卜杜外力·阿巴拜科日洪明新疆农业大学水利与土木工程学院/新疆水利工程安全与水灾害防治重点实验室新疆维吾尔自治区乌鲁木齐830052

土壤水分传感在精准农业研究过程中起着关键作用。以介电法土壤水分传感器为例,系统地总结了土壤水分传感器的分类和传感器的特点,分析了现有技术、土壤温度、土壤湿度、土壤类型、土壤盐分对介电法土壤水分传感器测量精度的影响比例,... 详细信息

土壤水分传感在精准农业研究过程中起着关键作用。以介电法土壤水分传感器为例,系统地总结了土壤水分传感器的分类和传感器的特点,分析了现有技术、土壤温度、土壤湿度、土壤类型、土壤盐分对介电法土壤水分传感器测量精度的影响比例,提出了如何加强土壤水分传感器测量精度的方法,以期有助于更好地了解和应用土壤水分传感器。

关键词：介电法土壤水分传感器影响因素

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Unraveling high efficiency multi-step sodium storage and bidirectional redox kinetics synergy mechanism of cobalt-doping vanadium disulfide anode

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Journal of Energy Chemistry 2024年第7期94卷 148-157页

作者： Enzhi Li Mingshan wang Yuanlong Feng Lin Yang Qian Li Zhenliang Yang Junchen Chen Bo Yu Bingshu Guo Zhiyuan Ma Yun Huang jiangtao Liu Xing Li School of New Energy and Materials Southwest Petroleum UniversityChengdu 610500SichuanChina Institute of Materials China Academy of Engineering PhysicsMianyang 621908SichuanChina State Key Laboratory of Advanced Chemical Power Sources Guizhou Meiling Power Sources Co.Ltd.Zunyi 563003GuizhouChina school of Chemistry and Chemical Engineering Harbin Institute of TechnologyHarbin 150001HeilongjiangChina

Sodium-based storage devices based on conversion-type metal sulfide anodes have attracted great atten-tion due to their multivalent ion redox reaction ***,they also suffer from sodium polysul-fides(NaPSs)shuttling problems during the sluggish Na^(+) redox process,leading to"voltage failure"and rapid capacity ***,a metal cobalt-doping vanadium disulfide(Co-VS_(2))is proposed to simulta-neously accelerate the electrochemical reaction of VS_(2) and enhance the bidirectional redox of soluble *** is found that the strong adsorption of NaPSs by V-Co alloy nanoparticles formed in situ during the conversion reaction of Co-VS_(2) can effectively inhibit the dissolution and shuttle of NaPSs,and ther-modynamically reduce the formation energy barrier of the reaction path to effectively drive the complete conversion reaction,while the metal transition of Co elements enhances reconversion kinetics to achieve high ***,Co-VS_(2) also produce abundant sulfur vacancies and unsaturated sulfur edge defects,significantly improve ionic/electron diffusion ***,the Co-VS_(2) anode exhibits ultrahigh rate capability(562 mA h g^(-1) at 5 A g^(-1)),high initial coulombic efficiency(~90%)and 12,000 ultralong cycle life with capacity retention of 90%in sodium-ion batteries(SIBs),as well as impressive energy/power density(118 Wh kg^(-1)/31,250 W kg^(-1))and over 10.000 stable cycles in sodium-ion hybrid capacitors(SIHCs).Moreover,the pouch cell-type SIHC displays a high-energy density of 102 Wh kg^(-1) and exceed 600 stable *** work deepens the understanding of the electrochemical reaction mechanism of conversion-type metal sulfide anodes and provides a valuable solution to the shuttlingofNaPSs inSIBsandSIHCs.

关键词： Sodium-ionbatteries Sodium-ion hybrid capacitors Pouch cells Vanadium disulfide Shuttle effect

Effects of landscape fragmentation of plantation forests on carbon storage in the Loess Plateau,China

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Journal of Arid Land 2024年第2期16卷 266-281页

作者： LEI Hangyu DUAN Dantong CHEN Yi GUO Huifeng LI jiangtao LI Xiang College of Landscape Architecture and Art Northwest A&F UniversityYangling 712100China

Tree plantation and forest restoration are the major strategies for enhancing terrestrial carbon sequestration and mitigating climate *** Grain for Green Project in China has positively impacted global carbon sequestration and the trend towards fragmentation of plantation *** studies have been conducted on changes in plantation biomass and stand structure caused by fragmentation,and the effect of fragmentation on the carbon storage of plantation forests remains *** study evaluated the differences between carbon storage and stand structure in black locust forests in fragmented and continuous landscape in the Ansai District,China and discussed the effects of ecological significance of four landscape indices on carbon storage and tree *** used structural equation modelling to explore the direct and indirect effects of fragmentation,edge,abiotic factors,and stand structure on above-ground carbon *** at breast height(DBH)in fragmented forests was 53.3%thicker,tree density was 40.9%lower,and carbon storage was 49.8%higher than those in continuous forests;for all given DBH>10 cm,the trees in fragmented forests were shorter than those in continuous *** patch area had a negative impact on carbon storage,i.e.,the higher the degree of fragmentation,the lower the density of the tree;and fragmentation and distance to edge(DTE)directly increased canopy ***,canopy coverage directly decreased carbon storage,and fragmentation directly increased carbon storage and tree *** non-commercial forests,fragmentation reduces the carbon storage potential of plantation,and the influence of patch area,edge,and patchy connection on plantation should be considered when follow-up trees are planted and for the plantation ***,expanding the area of plantation patches,repairing the edges of complex-shaped patches,enhancing the connectivity of similar patches,and applying nutrients to plantation forests at regular i

关键词： landscape fragmentation plantation carbon storage tree allometry tree density structural equation modelling

Moirésuperlattice effects on interfacial mechanical behavior:A concise review

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Interdisciplinary Materials 2024年第3期3卷 343-357页

作者： Weidong Yan jiangtao Liu Wengen Ouyang Ze Liu Department of Engineering Mechanics School of Civil EngineeringWuhan UniversityWuhanChina School of Physics and Mechatronic Engineering Guizhou Minzu UniversityGuiyangChina State Key Laboratory of Water Resources Engineering and Management Wuhan UniversityWuhanChina The Institute of Technological Sciences Wuhan UniversityWuhanChina

The moirésuperlattice,arising from the interface of mismatched single crystals,intricately regulates the physical and mechanical properties of materials,giving rise to phenomena such as superconductivity and *** study delves into the profound impact of moirésuperlattices on the interfacial mechanical behavior of van der Waals(vdW)layered materials,with a particular focus on tribological properties.A comprehensive review of continuum modeling approaches for vdW layered materials is presented,accentuating the incorporation of moirésuperlattice effects in theoretical models to unravel their distinctive interfacial frictional behavior and thermodynamic *** exploration of moirésuperlattices has significantly advanced our fundamental understanding of interface phenomena in vdW layered *** progress provides crucial theoretical insights that can inform the design of multifunctional devices based on the unique properties of twisted layered materials.

关键词： interfacial mechanics moirésuperlattice superlubricity twist angle van der Waals layered materials

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海域使用水平评价指标体系构建及其评价

海洋通报 2008年第2期27卷 59-64页

作者：王江涛国家海洋信息中心

综合考虑了海域使用水平的各方面影响因素,从海域使用程度、海域使用效率和海域使用结构三个方面建立评价指标体系,并把人们亲海需求满足程度、海域使用公益服务及和谐用海等新因素纳入指标体系。运用建立的评价指标体系对我国十个沿海... 详细信息

综合考虑了海域使用水平的各方面影响因素,从海域使用程度、海域使用效率和海域使用结构三个方面建立评价指标体系,并把人们亲海需求满足程度、海域使用公益服务及和谐用海等新因素纳入指标体系。运用建立的评价指标体系对我国十个沿海省市海域使用水平进行了综合评价,反映了其海域使用水平和存在的问题,并针对海域使用水平评价结果,指出了今后海域使用发展应该注重的方向,最后提出了海域使用水平评价研究中有待解决的问题。

关键词：海域使用水平评价指标体系评价

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洋流和潮波产生的感应电磁场对比

中国石油大学学报（自然科学版） 2022年第4期46卷 52-62页

作者：刘健王江涛王子鸣魏宝君中国石油大学(华东)理学院山东青岛266580

为定量计算洋流和潮波产生的电磁场,分别建立多层模型来描述洋流和潮波的运动。依托多层洋流模型,利用毕奥-萨伐尔定律和镜像法得到洋流产生的稳恒磁场的解析表达式;依托多层潮波模型,利用麦克斯韦方程组和电磁场的边界条件得到潮波感... 详细信息

为定量计算洋流和潮波产生的电磁场,分别建立多层模型来描述洋流和潮波的运动。依托多层洋流模型,利用毕奥-萨伐尔定律和镜像法得到洋流产生的稳恒磁场的解析表达式;依托多层潮波模型,利用麦克斯韦方程组和电磁场的边界条件得到潮波感应电磁场的解析表达式。基于所得到的解析表达式,分析海水速度、电导率等参数对洋流和潮波产生的感应电磁场的影响规律,研究频率对潮波产生的感应电磁场的影响并将其与洋流产生的结果进行对比。结果表明:海水速度的大小、速度随深度衰减的程度、电导率等参数均对洋流和潮波产生的感应电磁场有明显的影响;在各参数的合理取值范围内,速度变化对感应电磁场的影响程度更大;当潮波频率趋于0时,潮波运动产生的感应电磁场与洋流产生的电磁场趋于一致,证明了多层洋流模型与多层潮波模型在研究海洋环境背景电磁场时的正确性。

关键词：多层洋流模型多层潮波模型镜像法感应电磁场

A combined nanotherapeutic approach targeting farnesoid X receptor,ferroptosis,and fibrosis for nonalcoholic steatohepatitis treatment

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Acta Pharmaceutica Sinica B 2024年第5期14卷 2228-2246页

作者： jiangtao Fu Pingping Zhang Zhiguo Sun Guodong Lu Qi Cao Yiting Chen Wenbin Wu Jiabao Zhang Chunlin Zhuang Chunquan Sheng Jiajun Xu Ying Lu Pei wang The Center for Basic Research and Innovation of Medicine and Pharmacy(MOE) School of PharmacyNaval Medical UniversityShanghai 200433China National Demonstration Center for Experimental Pharmaceutical Education Naval Medical University/Second Military Medical UniversityShanghai 200433China Department of Diving and Hyperbaric Medicine Naval Special Medical CenterNaval Medical UniversityShanghai 200433China

Obeticholic acid(OCA),a farnesoid X receptor(FXR)agonist with favorable effects on fatty and glucose metabolism,has been considered the leading candidate drug for nonalcoholic steatohepatitis(NASH)***,its limited effectiveness in resolving liver fibrosis and lipotoxicity-induced cell death remains a major ***,a newly recognized form of cell death characterized by uncontrolled lipid peroxidation,is involved in the progression of *** oxide(NO)is a versatile biological molecule that can degrade extracellular *** this study,we developed a PEGylated thiolated hollow mesoporous silica nanoparticles(MSN)loaded with OCA,as well as a ferroptosis inhibitor liproxsatin-1 and a NO donor S-nitrosothiol(ONL@MSN).Biochemical analyses,histology,multiplexed flow cytometry,bulk-tissue RNA sequencing,and fecal 16S ribosomal RNA sequencing were utilized to evaluate the effects of the combined nanoparticle(ONL@MSN)in a mouse NASH *** with the OCA-loaded nanoparticles(O@MSN),ONL@MSN not only protected against hepatic steatosis but also greatly ameliorated fibrosis and ***@MSN also displayed enhanced therapeutic actions on the maintenance of intrahepatic macrophages/monocytes homeostasis,inhibition of immune response/lipid peroxidation,and correction of microbiota *** findings present a promising synergistic nanotherapeutic strategy for the treatment of NASH by simultaneously targeting FXR,ferroptosis,and fibrosis.

关键词： Nonalcoholic steatohepatitis Nanotherapy Farnesoid X receptor Ferroptosis Fibrosis Obeticholic acid S-Nitrosothiol Liproxstatin-1

Evaluating two stages of silicone-containing arylene resin oxidation via experiment and molecular simulation

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Chinese Journal of Chemical Engineering 2024年第2期66卷 189-202页

作者： jiangtao Cai Qingfu Huang Huan Chen Tao Zhang Bo Niu Yayun Zhang Donghui Long Key Laboratory of Chemical Engineering East China University of Science and TechnologyShanghai 200237China Key Laboratory of Special Functional Polymeric Materials and Related Technology(Ministry of Education) School of Chemical EngineeringEast China University of Science and TechnologyShanghai 200237China

Silicon-containing aryl acetylene resin(PSA)is a new type of high-temperature resistant resin with excellent oxidation resistance,whereas antioxidant reaction mechanism of PSA resin under ultra-high temperatures still remains ***,the oxidation behavior and mechanisms of PSA resin are systematically investigated combining kinetic analysis and Reax FF molecular dynamics(MD)*** analysis indicates that the oxidation process of PSA resin undergoes two main steps:oxidative mass gain and oxidative *** distributed activation energy model(DAEM)is employed for describing oxidation processes and the best-fit one is obtained using genetic algorithms and differential *** model demonstrates that the oxidative weight gain stage is dominated by two virtual reactants and the oxidative degradation stage consists of three virtual ***,the observation of MD reaction pathways indicates that oxygen oxidation of unsaturated structures occurs in the initial stage,which results in the formation of PSA resin ***,cracked pieces react with O_(2)to generate CO and other chemicals in the second *** resin matrix's great antioxidation resilience is illustrated by the formation of SiO_(2).The analysis based on MD simulations exhibits an efficient computational proof with the experiments and DAEM *** on the results,a two-stage reaction mechanism is proposed,which provides important theoretical support for the subsequent study of the oxidation behavior of silica-based resins.

关键词： PSA resin Oxidative degradation Thermogravimetric analysis DAEM reaction kinetics ReaxFF simulation

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基于曲线拟合的PEBB单元散热优化设计

电工技术学报 2016年第4期31卷 71-78页

作者：陈国栋刘宏王江涛上海电气输配电集团技术中心上海200042

散热优化是功率电子元组件(PEBB)设计的关键环节,良好的散热系统可充分提高PEBB的功率密度,最大限度地提高开关器件的利用率。文中详细计算了PEBB单元开关器件的各项损耗功率,并采用ICEPAK软件对该单元进行散热仿真分析。通过改变PEBB... 详细信息

散热优化是功率电子元组件(PEBB)设计的关键环节,良好的散热系统可充分提高PEBB的功率密度,最大限度地提高开关器件的利用率。文中详细计算了PEBB单元开关器件的各项损耗功率,并采用ICEPAK软件对该单元进行散热仿真分析。通过改变PEBB单元中散热器的翅片数目和基板厚度等参数,得出其对单元散热效果的影响,运用曲线拟合的方式确定了这些影响因素与散热效果的函数关系,并通过对函数式求极值给出了散热器结构优化方案,最终通过对比仿真结果与实验数据验证了热仿真设计方法和实验的一致性,证明了该仿真在系统散热优化设计中具有指导意义。

关键词：功率损耗热仿真 ICEPAK软件参数优化曲线拟合