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Rapid lithium-ion insertion/extraction and migration behavior of na_(2)WO_(4)-encapsulated lithium-rich layered oxide cathode

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Rare Metals 2024年第8期43卷 3647-3660页

作者： yu-Shen Zhao fan-fan Wang Jian-Cang Wang Peng-Fei Wang Ting-Feng yi Jun-Hong Zhang School of Materials Science and Engineering Northeastern UniversityShenyangShenyang 110819China Key Laboratory of Dielectric and Electrolyte Functional Material Hebei Province School of Resources and MaterialsNortheastern University at QinhuangdaoQinhuangdao 066004China Shandong Provincial Key Laboratory of Chemical Energy Storage and novel Cell Technology College of Chemistry and Chemical EngineeringLiaocheng UniversityLiaocheng 252059China

Due to the low cost,high working voltage and high storage capacity,Li-rich Mn-based layered compounds show promise as the cathode materials for lithiumion batteries(LIBs).However,the side reactions at the solid-liquid interface of the cathode will lead to rapid capacity decay and inferior rate ***,this article proposes a liquid-phase dispersion strategy to introduce a na_(2)WO_(4)layer on the Li_(1.2)ni_(0.13)-Co_(0.13)Mn_(0.54)O_(2) cathode,which can reduce the side effects between raw materials and electrolyte and promote the insertion/extraction rate of Li^(+),thus enhancing the material stability and rate *** a result,the capacity retention rate is 96.9%after 200 cycles under ***,the capacities are 177.5,149.5,111.1 and58.3 mAh·g^(-1)at 1C,2C,5C and 10C,imply.ng a superior fast charging *** exceptional performance can be ascribed to both the increased conductivity and enhanced structural stability of the cathode ***'s more,based on the investigation of ion insertion/extraction behavior in electrode materials and the ion migration kinetics in the electrolyte,this study suggests that coating Li-rich Mn-based materials with na_(2)WO_(4)can be a promising strategy to improve their performance in LIBs.

关键词： Li-ion battery Coating Rate performance Li_(1.2)ni_(0.13)Co_(0.13)Mn_(0.54)O_(2) Reaction kinetics

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Grain yield and n uptake of maize in response to increased plant density under reduced water and nitrogen supply conditions

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Journal of Integrative Agriculture 2024年第1期23卷 122-140页

作者： Jingui Wei Qiang Chai Wen y.n Hong fan yao Guo Falong Hu Zhilong fan QimingWang State Key Laboratory of Aridland Crop Science Lanzhou 730070China College of Agronomy Gansu Agricultural UniversityLanzhou 730070China College of Life Sciences Northwest Normal UniversityLanzhou 730070China

The development of modern agriculture requires the reduction of water and chemical n fertilizer *** the planting density can maintain higher yields,but also consumes more of these restrictive ***,whether an increased maize density can compensate for the negative effects of reduced water and n supply on grain yield and n uptake in the arid irrigated areas remains *** study is part of a long-term positioning trial that started in 2016.A split-split plot field experiment of maize was implemented in the arid irrigated area of northwestern China in 2020 to *** treatments included two irrigation levels:local conventional irrigation reduced by 20%(W1,3,240 m^(3)ha^(-1))and local conventional irrigation(W2,4,050 m^(3)ha^(-1));two n application rates:local conventional n reduced by 25%(n1,270 kg ha^(-1))and local conventional n(360 kg ha^(-1));and three planting densities:local conventional density(D1,75,000 plants ha^(-1)),density increased by 30%(D2,97,500 plants ha-1),and density increased by 60%(D3,120,000 plants ha^(-1)).Our results showed that the grain yield and aboveground n accumulation of maize were lower under the reduced water and n inputs,but increasing the maize density by 30% can compensate for the reductions of grain yield and aboveground n accumulation caused by the reduced water and n *** water was reduced while the n application rate remained unchanged,increasing the planting density by 30% enhanced grain yield by 13.9% and aboveground n accumulation by 15.3%.Under reduced water and n inputs,increasing the maize density by 30% enhanced n uptake efficiency and n partial factor productivity,and it also compensated for the n harvest index and n metabolic related enzyme *** with W2n2D1,the n uptake efficiency and n partial factor productivity increased by 28.6 and 17.6%under W1n1D2.W1n2D2 had 8.4% higher n uptake efficiency and 13.9% higher n partial factor productivity than W2n2D1.W1n2D2 improv

关键词： water and n reduction plant density maize grain yield n uptake compensation effect

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Directly predicting n2 electroreduction reaction free energy using interpretable machine learning with non-DFT calculated features

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Journal of Energy Chemistry 2024年第10期97卷 139-148页

作者： yaqin Zhang yuhang Wang ninggui Ma Jun fan Department of Materials Science and Engineering City University of Hong Kong Center for Advanced nuclear Safety and Sustainable Development City University of Hong Kong Department of Mechanical Engineering City University of Hong Kong

Electrocatalytic nitrogen reduction to ammonia has garnered significant attention with the blooming of single-atom catalysts（SACs）,showcasing their potential for sustainable and energy-efficient ammonia ***,cost-effectively designing and screening efficient electrocatalysts remains a *** this study,we have successfully established interpretable machine learning（ML） models to evaluate the catalytic activity of SACs by directly and accurately predicting reaction Gibbs free *** models were trained using non-density functional theory（DFT） calculated features from a dataset comprising 90 graphene-supported *** results underscore the superior prediction accuracy of the gradient boosting regression（GBR） model for both Δg（n2→nnH） and ΔG（nH2→nH3）,boasting coefficient of determination（R2） score of 0.972 and 0.984,along with root mean square error（RMSE） of 0.051 and 0.085 eV,***,feature importance analysis elucidates that the high accuracy of GBR model stems from its adept capture of characteristics pertinent to the active center and coordination environment,unveilling the significance of elementary descriptors,with the colvalent radius play.ng a dominant ***,Shapley additive explanations（SHAP） analysis provides global and local interpretation of the working mechanism of the GBR *** analysis identifies that a pyrrole-type coordination（flag=0）,d-orbitals with a moderate occupation（nd=5）,and a moderate difference in covalent radius(rTM-avenear 140 pm) are conducive to achieving high ***,we extend the prediction of activity to more catalysts without additional DFT calculations,validating the reliability of our feature engineering,model training,and design *** findings not only highlight new opportunity for accelerating catalyst design using non-DFT calculated features,but also shed light on the working mechanism of "black box" ML ***,the model provides valuable guidanc

关键词： Graphene Interpretable machine learning nitrogen reduction non-DFT features Single-atom catalyst

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Exploring the biogeography,morphology,and phylogeny of the condylostomatid ciliates(Alveolata,Ciliophora,Heterotrichea),with establishment of four new Condylostoma species and a revision including redescriptions of five species found in China

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Marine Life Science & Technology 2024年第3期6卷 365-404页

作者： y.ng Chi fan Wei Danxu Tang Changjun Mu Honggang Ma Zhe Wang Khaled A.SAl-Rasheid Hunter n.Hines Xiangrui Chen School of Marine Sciences Ningbo UniversityNingbo 315211China Institute of Evolution&Marine Biodiversity and Key Laboratory of Evolution&Marine Biodiversity(Education Ministry)Ocean University of ChinaQingdao 266003 China3 Marine College Shandong UniversityWeihai 264209China Weishan Special Aquaculture Base Jining 277600China Zoology Department College of SciencesKing Saud UniversityRiyadh 11451Saudi Arabia Harbor Branch Oceanographic Institute Florida Atlantic UniversityFlorida 34946USA

Species of the ciliate class Heterotrichea Stein,1859 are a cosmopolitan group of unicellular eukaryotic microorganisms,many of which have been widely used as models in various fields of research such as regenerative biology,functional ecol-ogy,environmental toxicology,and symbiotic ***,species identification in the heterotrich family Condylos-tomatidae,especially the most species-rich and type genus Condylostoma Bory de Saint-Vincent,1824,remains challenging due to incomplete original descriptions,few reliable distinguishing characters,and overlapping features between different *** study presents an updated revision of Condylostoma and its related genus Condylostomides da Silva neto,1994 based on descriptions of five species,including nine populations collected from China,using both morphological and molecular *** main findings are as follows:(1)43 nominal species and about 130 populations are reviewed,result-ing in the recognition of 30 valid species of Condylostoma and eight valid species of Condylostomides;(2)keys,synonyms,biogeographic distributions and amended/improved diagnoses of all valid species are provided;(3)based on the available data,four new Condylostoma species(*** ***.,*** ***.,*** ***.,and *** ***.),one new combination(Condylostomides minimus(Dragesco,1954)***.&***.),and two corrected names(Condylostoma ancestrale Villeneuve-Brachon,1940 *** Condylostomides nigrus(Dragesco,1960)***.)are suggested;(4)cryptic species are detected and proposed for the first time to form the Condylostoma curvum spe-cies complex;(5)three highly confusing Condylostoma species,***,***,and ***,are redefined for the first time based on modern taxonomic methods;(6)a‘flagship’species,Condylostomides coeruleus,is recorded for the first time from the continent of Asia,substantially expanding its biogeography;(7)ciliature adjacent to the distal end of the paroral mem

关键词： Condylostoma Condylostomides new species Phylogeny Revision Taxonomy

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Plant RnA-binding proteins:Phase separation dynamics and functional mechanisms underly.ng plant development and stress responses

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Molecular Plant 2024年第4期17卷 531-551页

作者： Sheng fan yu Zhang Shaobo Zhu Lisha Shen Temasek Life Sciences Laboratory 1 Research LinkNational University of Singapore1 Research LinkSingapore 117604Singapore Department of Biological Sciences National University of Singapore14 Science Drive 4Singapore 117543Singapore

RnA-binding proteins(RBPs)accompany RnA from synthesis to decay,mediating every aspect of RnA metabolism and impacting diverse cellular and developmental processes in *** RBPs undergo phase separation along with their bound RnA to form and function in dynamic membraneless biomolecular condensates for spatiotemporal coordination or regulation of RnA *** evidence suggests that phase-separating RBPs with RnA-binding domains and intrinsically disordered regions play important roles in plant development and stress ***,we summarize the current knowledge about how dynamic partitioning of RBPs into condensates controls plant development and enables sensing of experimental changes to confer growth plasticity under stress conditions,with a focus on the dynamics and functional mechanisms of RBP-rich nuclear condensates and cytoplasmic granules in mediating RnA *** also discuss roles of multiple factors,such as environmental signals,protein modifications,and n6-methyladenosine RnA methylation,in modulating the phase separation behaviors of RBPs,and highlight the prospects and challenges for future research on phase-separating RBPs in crops.

关键词： RnA-binding proteins phase separation biomolecular condensates RnA metabolism development stress resilience

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Dynamic response of buildings under debris flow impact

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Journal of Mountain Science 2024年第5期21卷 1581-1597页

作者： LIU Huan fan Xiaoyi TIAn Shujun DEnG Xin School of Mechanical and Electrical Engineering Southwest Petroleum UniversityChengdu 610500China School of Civil Engineering and Geomatics Southwest Petroleum UniversityChengdu 610500China Housing and Urban-Rural Development Bureau of Mingshan District Ya’an 625100China Engineering Safety Assessment and Protection Research Southwest Petroleum UniversityChengdu 610500China School of Civil Engineering and Architecture Southwest University of Science and TechnologyMianyang 621010China

This study employs the smoothed particle hydrodynamics–finite element method(SPH–FEM) coupling numerical method to investigate the impact of debris flow on reinforced concrete(RC)-frame buildings. The methodology considers the variables of debris flow depth and velocity and introduces the intensity index IDV(IDV = DV) to evaluate three different levels of debris flow impact intensity. The primary focus of this study is to investigate the dynamic response and failure mechanism of RC-frame buildings under debris flow impact, including structural failure patterns, impact force and column displacement. The results show that under a highintensity impact, a gradual collapse process of the RCframe building can be observed, and the damage mode of the frame column reflects shear failure or plastic hinge failure mechanism. First, the longitudinal infill walls are damaged owing to their low out-of-plane flexural capacity;the critical failure intensity index IDV value is approximately 7.5 m2/s. The structure cannot withstand debris flows with an intensity index IDV greater than 16 m2/s, and it is recommended that the peak impact force should not exceed 2100 k n. The impact damage ability of debris flow on buildings mostly originates from the impact force of the frontal debris flow, with the impact force of the debris flow body being approximately 42% lower than that of the debris flow head. Finally, a five-level classification system for evaluating the damage status of buildings is proposed based on the numerical simulation and investigation results of the disaster site.

关键词： SPH–FEM method Debris flow Buildings The intensity index Dynamic response

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Mutations in the SARS-CoV-2 spike receptor binding domain and their delicate balance between ACE2 affinity and antibody evasion

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Protein & Cell 2024年第6期15卷 403-418页

作者： Song Xue yuru Han fan Wu Qiao Wang Key Laboratory of Medical Molecular Virology (MOE/nHC/CAMS) Shanghai Institute of Infectious Disease and BiosecurityShanghai Frontiers Science Center of Pathogenic Microorganisms and InfectionSchool of Basic Medical SciencesShanghai Medical CollegeFudan UniversityShanghai 200032China

Intensive selection pressure constrains the evolutionary trajectory of SARS-CoV-2 genomes and results in various novel variants with distinct mutation *** mutations,particularly those within the receptor binding domain(RBD)of SARS-CoV-2 spike(S)protein,lead to the functional alteration in both receptor engagement and monoclonal antibody(mAb)***,we review the data of the RBD point mutations possessed by major SARS-CoV-2 variants and discuss their individual effects on ACE2 affinity and immune *** single amino acid substitutions within RBD epitopes crucial for the antibody evasion capacity may conversely weaken ACE2 binding ***,this weakened effect could be largely compensated by specific epistatic mutations,such as n501y,thus maintaining the overall ACE2 affinity for the spike protein of all major *** predominant direction of SARS-CoV-2 evolution lies neither in promoting ACE2 affinity.nor evading mAb neutralization but in maintaining a delicate balance between these two ***,this review interprets how RBD mutations efficiently resist antibody.neutralization and meanwhile how the affinity between ACE2 and spike protein is maintained,emphasizing the significance of comprehensive assessment of spike mutations.

关键词： ACE2 affinity maintained

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Investigation of Maxima Assumptions in Modelling Tropical Cyclone- Induced Hazards in the South China Sea

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China Ocean Engineering 2024年第3期38卷 491-504页

作者： WEn Ze-guo WAnG Fu-ming WAn Jing y.nG fan School of Civil Engineering Sun Yat-sen University&Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai)Zhuhai 519082China Guangdong Academy of Safety Science and Technology Guangzhou 510060China Guangdong Key Laboratory of Oceanic Civil Engineering Guangzhou 510275China Advanced Energy Science and Technology Guangdong Laboratory(y.ngjiang Offshore Wind Energy Laboratory) Yangjiang 529500China

The present study aims to examine the suitability of two commonly used assumptions that simplify modelling metoceanconditions for designing offshore wind turbines in the South China Sea (SCS). The first assumption assumes thatjoint n-year extreme wind and wave events can be independently estimated and subsequently combined. The secondone assumes peak wind and waves can be modelled as occurring simultaneously during a tropical cyclone (TC) *** better understand the potential TC activity, a set of 10000 years synthetic TC events are generated. The wind fieldmodel and the Mike 21 spectral wave model are employed to model the TC-induced hazards. Subsequently, theeffect of the assumptions is evaluated by analyzing the peak structural response of both monopile and semisubmersibleoffshore wind turbines during TC events. The results demonstrate that the examined assumptions are generally *** assessing the implications of these assumptions, valuable insights are obtained, which can inform andimprove the modelling of TC-induced hazards in the SCS region.

关键词： tropical cyclone numerical wave modelling hazards offshore wind turbines structural response

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Morphological and biochemical characteristics associated with autophagy in gastrointestinal diseases

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World Journal of Gastroenterology 2024年第11期30卷 1524-1532页

作者： yi-fan Chang Jia-Jing Li Tao Liu Chong-Qing Wei Li-Wei Ma Vladimir n nikolenko Wei-Long Chang Department of Gastrointestinal Surgery The First Affiliated Hospital of Zhengzhou UniversityZhengzhou 450052Henan ProvinceChina Department of Pathology The First Affiliated Hospital of Zhengzhou UniversityZhengzhou 450052Henan ProvinceChina Department of Clinical Laboratory The First Affiliated Hospital of Zhengzhou UniversityZhengzhou 450052Henan ProvinceChina Department of Human Anatomy and Histology I.M.Sechenov First Moscow State Medical University(Sechenov University)Moscow 119991Russia

Autophagy is a cellular catabolic process characterized by the formation of double-membrane *** electron microscopy is the most rigorous method to clearly visualize autophagic engulfment and degradation.A large number of studies have shown that autophagy is closely related to the digestion,secretion,and regeneration of gastrointestinal(GI)***,the role of autophagy in GI diseases remains *** article focuses on the morphological and biochemical characteristics of autophagy in GI diseases,in order to provide new ideas for their diagnosis and treatment.

关键词： Autophagy Morphological study Biochemical characteristics Subcellular structure Transmission electron microscopy Gastrointestinal diseases

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Exceptional mechanical performance and macroscale superlubricity enabled by core-shell-like MoS_(2)/B_(4)C film

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Science China(Technological Sciences) 2024年第7期67卷 2018-2030页

作者： REn SiMing GAO ZhenRong fan Xin WAnG HaiXin WAnG LiPing Key Laboratory of Advanced Marine Materials Ningbo Institute of Materials Technology and EngineeringChinese Academy of SciencesNingbo 315201China

Molybdenum disulfide(MoS_(2)) films are widely deployed in industrial applications owing to their inherent interlayer slip characteristics, offering energy consumption savings and prolonged mechanical part performance. nevertheless, their practical utility is limited by environmental constraints and the limitations of preparation techniques, which hinder the attainment of robust superlubricity(friction coefficient n, through magnetron sputtering technology, we synthesize a core-shell-like nanocomposite composed of MoS_(2)nanosheets encapsulating B_(4)C. The core-shell-like structure enables the resulting films to preferentially grow crystalline MoS_(2), providing them with outstanding mechanical properties and efficient lubrication over a wide range of temperatures. Remarkably, such film achieves robust macroscale superlubricity and an ultralow wear rate(1.7 ×10^(-8)mm^(3)n-1m^(-1)) under high contact stress in a mild vacuum environment. This noteworthy outcome is primarily attributable to the self-segmentation of the macroscale contact interface during the friction process, involving:(1) a large amount of wear debris is embedded into the wear track to create extensive micro-sized asperities;(2) a nanolayer of amorphous carbon enriched with oxide nanoparticles is formed on the uppermost part of these asperities;(3) numerous incommensurate nanocontacts comprising nanoparticles and highly oriented MoS_(2)nanosheets are established, culminating in the achievement of robust superlubricity. Our pioneering design, coupled with the elucidation of the underly.ng superlubricity mechanism, holds significant promise for advancing the development of robust and high-performance lubricants.

关键词： MoS_(2)/B_(4)C nanocomposites core-shell-like structure H/E ratio high-temperature friction macroscale superlubricity

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