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Furfural residues derived nitrogen-sulfur co-doped sheet-like carbon: An excellent electrode for dual carbon lithium-ion capacitors

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Green Energy & Environment 2024年第9期9卷 1427-1439页

作者： Xiaoying Guo Yan Qiao Zonglin Yi christian Marcus Pedersen Yingxiong Wang Xiaodong Tian Peide Han College of Materials Science and Engineering Taiyuan University of Technology State Key Laboratory of Coal Conversion Institute of Coal Chemistry Chinese Academy of Sciences University of Chinese academy of Sciences CAS Key Laboratory of Carbon Materials Institute of Coal Chemistry Chinese Academy of Sciences Department of Chemistry University of Copenhagen Universitetsparken 5 College of Chemistry Taiyuan University of Technology

The state-of-the-art lithium-ion capacitors （LICs）,consisting of high-capacity battery-type anode and high-rate capacitor-type cathode,can deliver high energy density and large power density when comparing with traditional supercapacitors and lithium-ion batteries,***,the ion kinetics mismatch between cathode and anode leads to unsatisfied cycling lifetime and anode *** efforts have been devoted to solving the abovementioned *** promising strategy is altering high conductive hard carbon anode with excellent structural stability to match with activated carbon cathode,assembling dual-carbon *** this contribution,one-pot in-situ expansion and heteroatom doping strategy was adopted to prepare sheet-like hard carbon,while activated carbon was obtained involving *** persulfate was used as expanding and doping agent *** furfural residues （FR） were served as carbon *** resulting hard carbon （FRNS-HC） and activated carbon （FRNS-AC）show excellent electrochemical performance as negative and positive electrodes in a lithium-ion battery （LIB）.To be specific,374.2 m Ah g-1and 123.1 m Ah g-1can be achieved at 0.1 A g-1and 5 A g-1when FRNS-HC was tested as *** combined with a highly porous carbon cathode (SBET=2961 m2g-1) synthesized from the same precursor,the LIC showed high specific energy of147.67 Wh kg-1at approximately 199.93 W kg-1,and outstanding cycling life with negligible capacitance fading over 1000 *** study could lead the way for the development of heteroatom-doped porous carbon nanomaterials applied to Li-based energy storage applications.

关键词： Furfural residue Ammonium persulfate Sheet-like carbon Lithium-ion capacitors Hard carbon

Assessment of natural and anthropogenic impacts on terrestrial water storage in the Loess Plateau based on different types of grace/grace-FO solutions

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Journal of Mountain Science 2024年第7期21卷 2173-2192页

作者： ZHANG Cheng CHEN Peng ZHU Chengchang LU Jierui ZHANG Yuchen YANG Xinyue WU Mengyan College of Geomatics Xi'an University of Science and TechnologyXi'an 710054China State Key Laboratory of Geodesy and Earth’s Dynamics Innovation Academy for Precision Measurement Science and TechnologyChinese Academy of SciencesWuhan 430077China

Changes in water resource storage are inevitable due to climate change and human activities,thus understanding alterations in water storage within a specific region is imperative for the planning and management of water *** from the Gravity Recovery and Climate Experiment(grace)satellite mission are extensively employed to analyze large-scale total terrestrial water storage anomalies(TWSA).In this study,we derived a more reliable TWSA using different types of grace gravity models,which served as the basis for evaluating spatial and temporal variations in total terrestrial water storage and its hydrological components(soil moisture and groundwater)across the Loess ***,we analyzed the impact of natural and anthropogenic influences on water storage in the Loess Plateau,categorizing them into primary and secondary influences,utilizing data on climate and human *** findings revealed a declining trend in the overall TWSA of the Loess Plateau,with a rate of decrease at-0.65±0.05 cm/yr from 2003 to 2020(P<0.01).As the direct factors affecting TWSA,soil moisture dominated the change of TWSA before 2009,and groundwater dominated the change of TWSA after ***,there was variability in the changes of TWSA in the Loess *** in-depth studies showed that soil moisture changes in the study area were primarily driven by evapotranspiration and temperature,with precipitation and vegetation cover status playing a secondary *** activities had a secondary effect on soil moisture in some *** change and agricultural development were major factors in altering groundwater storage in the study *** than that,groundwater was influenced by natural factors to a limited *** findings provided valuable insights for local governments to implement proactive water management policies.

关键词： grace Terrestrial water storage Human activity Loess Plateau

Loss of the accessory chromosome converts a pathogenic tree-root fungus into a mutualistic endophyte

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Plant Communications 2024年第1期5卷 164-180页

作者： Huanshen Wei Zhenhui Zhong Zhongfeng Li Yuwei Zhang Eva H.Stukenbrock Boping Tang Ningning Yang Riccardo Baroncelli Long Peng Zhuo Liu Xinghua He Yuzhan Yang Zhilin Yuan State Key Laboratory of Tree Genetics and Breeding Chinese Academy of ForestryBeijing 100091China Research Institute of Subtropical Forestry Chinese Academy of ForestryHangzhou 311400China State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops Fujian Agriculture and Forestry UniversityFuzhou 350002China Environmental Genomics Christian-Albrechts University24118 KielGermany Max Planck Fellow Group Environmental Genomics Max Planck Institute for Evolutionary Biology24306 PlonGermany Jiangsu Key Laboratory for Bioresources of Saline Soils School of WetlandsYancheng Teachers UniversityYancheng 224002China Department of Agricultural and Food Sciences(DISTAL) University of Bologna40127 BolognaItaly

Some fungal accessory chromosomes(ACs)may contribute to virulence in ***,the mecha-nisms by which ACs determine specific traits associated with lifestyle transitions along a symbiotic contin-uum are not *** we delineated the genetic divergence in two sympatric but considerably variable isolates(16B and 16W)of the poplar-associated fungus Stagonosporopsis *** identified a-0.6-Mb horizontally acquired AC in 16W that resulted in a mildly parasitic lifestyle in *** deletion of the AC(D16W)significantly altered the fungal ***,D16W was morphologically more similar to 16B,showed enhanced melanization,and established beneficial interactions with poplar plants,thereby acting as a dark septate *** sequencing(RNA-seq)analysis showed that AC loss induced the upregulation of genes related to root colonization and biosynthesis of indole acetic acid and *** observed that the AC maintained a more open status of chromatin across the genome,indicating an impressive remodeling of cis-regulatory elements upon AC loss,which potentially enhanced symbiotic *** demonstrated that the symbiotic capacities were non-host-specific through comparable experiments on Triticum–and Arabidopsis–fungus ***,the three isolates generated symbiotic interactions with a nonvascular *** summary,our study suggests that the AC is a suppressor of symbiosis and provides insights into the underlying mechanisms of mutualism with vascular plants in the absence of traits encoded by the *** speculate that AC-situ-ated effectors and other potential secreted molecules may have evolved to specifically target vascular plants and promote mild virulence.

关键词： dark septate endophytes effectors lifestyle transition root–fungus symbioses

Protect the oceans from Japan's radioisotope dumping

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Environmental Science and Ecotechnology 2024年第4期20卷 16-17页

作者： Chengjun Li Huan Zhong Lingyu Meng Mengjie Wu Wenjing Ning Su Shiung Lam Jun Luo christian Sonne Institute of Environmental Research at greater Bay Area Guangzhou UniversityGuangzhou 510006China School of Environment Nanjing UniversityNanjingChina Department of Civil Engineering Nagoya Institute of TechnologyJapan Key Laboratory of Soil Environment and Pollution Remediation Institute of Soil ScienceChinese Academy of SciencesNanjingChina Universiti Malaysia Terengganu TerengganuMalaysia Center for Global Health Research(CGHR) Saveetha Institute of Medical and Technical Sciences(SIMATS)Saveetha UniversityChennaiIndia Aarhus University RoskildeDenmark Sustainability Cluster School of EngineeringUniversity of Petroleum&Energy StudiesDehradunUttarakhandIndia

In August 2023,Japan started to dump its 1.3 million tons of radioactive wastewater into the oceans[1,2].Most radioisotopes are claimed to be removed from the wastewater except tritium,which needs further dilution before ***,this dilution does not effectively remove any tritium from the wastewater but serves as a measure to bring its abnormally high concentration down to meet emission *** most worrisome situation is that many more bioaccumulative long-lived radioisotopes(BLLRs),such as carbon-14 and cobalt-60,slip through the treatment *** are attempts to reduce the concentrations of BLLRs via repurification to meet the regulatory standards[3];however,even low levels of these BLLRs can undergo biomagnification of up to 50,000 folds in marine fish species[4].

关键词： wastewater Japan removed

Degeneration of foundation cushion species induced by ecological constraints can cause massive changes in alpine plant communities

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Science China(Life Sciences) 2024年第4期67卷 789-802页

作者： Jianguo Chen Xufang Chen Lishen Qian Yazhou Zhang Bo Li Honghua Shi Lu Sun christian Schöb Hang Sun Key Laboratory for Plant Diversity and Biogeography of East Asia Kunming Institute of BotanyChinese Academy of SciencesKunming 650201China University of Chinese academy of Sciences Beijing 100049China College of Resources and Environment Yunnan Agricultural UniversityKunming 650500China Área de Biodiversidad y Conservación Universidad Rey Juan CarlosMóstoles 28933Spain

Foundational cushion plants can re-organize community structures and sustain a prominent proportion of alpine biodiversity,but they are sensitive to climate *** loss of cushion species can have broad consequences for associated *** potential plant community changes with the population dynamics of cushion plants remain,however,*** eight plant communities along a climatic and community successional gradient,we assessed cushion population dynamics,the underlying ecological constraints and hence associated plant community changes in alpine communities dominated by the foundational cushion plant Arenaria *** population dynamics of Arenaria are attributed to ecological constraints at a series of life history *** functions are constrained by increasing associated beneficiary plants;subsequent seedling establishment is constrained by temperature,water and light availability,extreme climate events,and interspecific competition;strong competitive exclusion may accelerate mortality and degeneration of cushion *** with cushion dynamics,species composition,abundance and community structure gradually *** cushion plants completely degenerate,previously cushion-dominated communities shift to relatively stable communities that are overwhelmingly dominated by *** warming may accelerate the degeneration process of *** of this foundational cushion plant will possibly induce massive changes in alpine plant communities and hence ecosystem functions in alpine *** assessment of the population dynamics of foundation species is critical for an effective conservation of alpine biodiversity.

关键词： alpine ecosystem biodiversity change climate change plant community dynamics foundation species global warming population dynamics

Body-contact self-bias effect in partially depleted SOI-CMOS and alternatives to suppress floating body effect

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Journal of Semiconductors 2011年第2期32卷 33-37页

作者：周建华高明辉彭树根邹世昌 grace Semiconductor Manufacturing Corporation Shanghai Institute of Microsystem and Information Technology Chinese Academy of Sciences Graduate University of the Chinese academy of Sciences

As SOI-CMOS technology nodes reach the tens ofnanometer regime, body-contacts become more and more ineffective to suppress the floating body effect. In this paper, self-bias effect as the cause for this failure is analyzed and discussed in depth with respect to different structures and conditions. Other alternative approaches to suppressing the floating body effect are also introduced and discussed.

关键词： partially depleted SOI-CMOS floating body effect hot-carriers kink-effect gate oxide tunneling

Silicide-block-film effects on high voltage drain-extended MOS transistors

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Journal of Semiconductors 2009年第3期30卷 52-55页

作者：王磊高超刘博胡剑黎坡巨晓华张美丽李文军杨华岳 Shanghai Institute of Microsystem and Information Technology Chinese Academy of Sciences Graduate University of the Chinese academy of Sciences grace Semiconductor Manufacturing Corporation

Silicide-block-film effects on drain-extended MOS （DEMOS） transistors were comparatively investigated, by means of different film stack stoichiometric SiO2 and silicon-rich oxide （SRO）. The electrical properties of the as-deposited films were evaluated by extracting source/drain series resistance. It was found that the block film plays a role like a field plate, which has significant influence on the electric field beneath. Similar to hot-carrier- injection （HCI） induced degradation for devices, the block film initially charged in fabrication process also strongly affects the device characteristics and limits the safe operating area.

关键词： DEMOS silicide-block-film field plate

Simulation solution for micro droplet impingement on a flat dry surface

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Chinese Physics B 2008年第9期17卷 3185-3188页

作者：孙震海韩瑞津 Shanghai Institute of Microsystem and Information Technology Chinese Academy of Sciences grace Semiconductor Manufacture Corporation Graduate School of Chinese academy of Sciences

This paper presents a computational fluid dynamics approach for micro droplet impacting on a flat dry surface. A two-phase flow approach is employed using FLUENT VOF multiphase model to calculate the flow distributions upon impact. The contact line velocity is tracked to calculate the dynamic contact angle through user defined function program. The study showed that the treatment of contact line velocity is crucial for the accurate prediction of droplet impacting on poor wettability surfaces. On the other hand, it has much less influence on the simulation of droplet impacting on good wettability surfaces. Good fit between simulation results and experimental data is obtained using this model.

关键词： droplet impact wettability contact line velocity dynamic contact angle

Role of CF_2 in the etching of SiO_2,Si_3N_4 and Si in fluorocarbon plasma

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Journal of Semiconductors 2009年第3期30卷 30-34页

作者：陈乐乐朱亮徐昕睿李东霞蔡辉包大勇 Shanghai Institute of Microsystem and Information Technology Chinese Academy of Sciences Graduate University of the Chinese academy of Sciences grace Semiconductor Manufacturing Corporation

The CF2 density and etch rate of SiO2, Si3N4 and Si are investigated as a function of gas pressure and O2 flow rate in fluorocarbon plasma. As the pressure increases, the self-bias voltage decreases whereas the SiO2 etch rate increases. Previous study has shown that SiO2 etch rate is proportional to the self-bias voltage. This result indicates that other etching parameters contribute to the SiO2 etching. Generally, the CF2 radical is considered as a precursor for fluorocarbon layer formation. At a given power, defluorination of fluorocarbon under high-energy ion bombardment is a main source of fluorine for SiO2 etching. When more CF2 radical in plasma, SiO2 etch rate is increased because more fluorine can be provided. In this case, CF2 is considered as a reactant for SiO2 etching. The etch rate of Si3N4 and Si is mainly determined by the polymer thickness formed on its surface which is dominated by the CF2 density in plasma. Etching results obtained by varying O2 flow rate also support the proposition.

关键词： CF2 SiO2 etching fluorocarbon film