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construction of 3D porous cu_(1.81)S/nitrogen-doped carbon frameworks for ultrafast and long-cycle life sodium-ion storage

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 191-200页

作者： chen chen Hongyu Xue Qilin hu Mengfan Wang Pan Shang Ziyan Liu Tao Peng Deyang Zhang yongsong Luo Key Laboratory of Microelectronics and Energy of Henan Province Henan Joint International Research Laboratory of New Energy Storage TechnologyCollege of Physics and Electronic EngineeringXinyang Normal UniversityXinyang 464000China School of Physics and Electronic Engineering Nanyang Normal UniversityNanyang 473061China

Transition metal sulfides have great potential as anode mterials for sodium-ion batteries(SIBs)due to their high theoretical specific ***,the inferior intrinsic conductivity and large volume variation during sodiation-desodiation processes seriously affect its high-rate and long-cyde performance,unbeneficial for the application as fast-charging and long-cycling SIBs ***,the three-dimensional porous cu_(1.81)S/nitrogen-doped carbon frameworks(cu_(1.81)S/Nc)are synthesized by the simple and facile sol-gel and annealing processes,which can accommodate the volumetric expansion of cu_(1.81)S nanoparticles and accelerate the transmission of ions and electrons during Na^(+)insertion/extraction processes,exhibiting the excellent rate capability(250.6 mA·g^(-1)at 20.0 A·g^(-1))and outstanding cycling stability(70% capacity retention for 6000 cycles at 10.0 A·g^(-1))for ***,the Na-ion full cells coupled with Na_(3)V_(2)(PO_(4))_(3)/c cathode also demonstrate the satisfactory reversible specific capacity of 330.5 mAh·g^(-1)at 5.0 A·g^(-1)and long-cycle performance with the 86.9% capacity retention at 2.0 A·g^(-1)after 750 *** work proposes a promising way for the conversionbased metal sulfides for the applications as fast-charging sodium-ion battery anode.

关键词： copper sulfide nanoparticles porous carbon framework fast charging long-cycle performance sodium-ion full batteries

Revealing the Role of Hydrogen in Highly Efficient Ag-Substituted cZTSSe Photovoltaic Devices:Photoelectric Properties Modulation and Defect Passivation

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Nano-Micro Letters 2025年第4期17卷 166-180页

作者： Xiaoyue Zhao Jingru Li chenyang hu yafang Qi Zhengji Zhou Dongxing Kou Wenhui Zhou Shengjie yuan Sixin Wu The Key Laboratory for Special Functional Materials of MOE School of Nanoscience and Materials EngineeringNational and Local Joint Engineering Research Center for High-Efficiency Display and Lighting TechnologyCollaborative Innovation Center of Nano Functional Materials and ApplicationsHenan UniversityKaifeng 475004People’s Republic of China

The presence of SnZn-related defects in cu_(2)ZnSn(S,Se)_(4)(cZTSSe)absorber results in large irreversible energy loss and extra irreversible electron-hole non-radiative recombination,thus hindering the efficiency enhancement of cZTSSe *** the incorporation of Ag in cZTSSe can effectively suppress the SnZn-related defects and significantly improve the resulting cell performance,an excellent efficiency has not been achieved to date primarily owing to the poor electrical-conductivity and the low carrier density of the cZTSSe film induced by Ag ***,this study exquisitely devises an Ag/H co-doping strategy in cZTSSe absorber via Ag substitution programs followed by hydrogen-plasma treatment procedure to suppress SnZn defects for achieving efficient cZTSSe ***-depth investigation results demonstrate that the incorporation of H in Ag-based cZTSSe absorber is expected to improve the poor electrical-conductivity and the low carrier density caused by Ag ***,the c=O and O-H functional groups induced by hydrogen incorporation,serving as an electron donor,can interact with under-coordinated cations in cZTSSe material,effectively passivating the SnZn-related ***,the incorporation of an appropriate amount of Ag/H in cZTSSe mitigates carrier non-radiative recombination,prolongs minority carrier lifetime,and thus yields a champion efficiency of 14.74%,showing its promising application in kesterite-based cZTSSe devices.

关键词： cZTSSe Ag/H co-doping Photoelectric properties modulation Defect passivation Non-radiative recombination

Influence of material characteristics on the failure mode and process of landslide dam

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Journal of Mountain Science 2025年第1期22卷 89-109页

作者： hu Liang ZHONG Qiming cHEN Liang yANG Meng ZHANG Lucheng WU Hao college of civil and Transportation Engineering Hohai UniversityNanjing 210098China Department of Geotechnical Engineering Nanjing Hydraulic Research Institute National Key Laboratory of Water Disaster Prevention Nanjing 210098China Key Laboratory of Reservoir and Dam Safety of the Ministry of Water Resources Nanjing 210029China

Landslide dams,as frequent natural hazards,pose significant risks to human lives,property,and ecological *** grading characteristics and density of dam materials play a crucial role in determining the stability of landslide dams and the potential for dam *** explore the failure mechanisms and evolutionary processes of landslide dams with varying soil properties,this study conducted a series of flume experiments,considering different grain compositions and material *** results demonstrated that grading characteristics significantly influence landslide dam stability,affecting failure patterns,breach processes,and final breach ***-graded materials exhibited a sequence of surface erosion,head-cut erosion,and subsequent surface erosion during the breach process,while well-graded materials typically experienced head-cut erosion followed by surface *** coarse-graded dams,the high permeability of coarse particles allowed the dam to remain stable,as inflows matched *** dam breach model experiments also showed that increasing material density effectively delayed the breach and reduced peak breach flow ***,higher fine particle content led to a reduction in the residual dam height and the base slope of the final breach profile,although the relationship between peak breach discharge and the content of fine and coarse particles was *** better understand breach morphology evolution under different soil characteristics and hydraulic conditions,three key points were identified—erosion point,control point,and scouring *** study,by examining the evolution of failure patterns,breach processes,and breach flow discharges under various grading and density conditions,offers valuable insights into the mechanisms behind landslide dam failures.

关键词： Landslide dams Overtopping Grain size distribution Breaching process Outflow discharge

creeping fat and gut microbiota in crohn’s disease

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World Journal of Gastroenterology 2025年第1期31卷 16-23页

作者： Ana EV Quaglio Daniéla O Magro Marcello Imbrizi Ellen cS De Oliveira Luiz c Di Stasi Ligia y Sassaki Verum Ingredients Botucatu Technology ParkBotucatu 18605-525São PauloBrazil Department of Surgery Faculty of Medical SciencesState University of CampinasCampinas 13083-970São PauloBrazil Department of Gastroenterology Faculty of Medical SciencesUniversity of CampinasCampinas 13083-970São PauloBrazil Department of Internal Medicine Medical SchoolSão Paulo State UniversityBotucatu 18618-686São PauloBrazil Department of Biophysics and Pharmacology Institute of BiosciencesSão Paulo State UniversityBotucatu 18618-689São PauloBrazil

In this article,we explored the role of adipose tissue,especially mesenteric adipose tissue and creeping fat,and its association with the gut microbiota in the pathophysiology and progression of crohn’s disease(cD).cD is a form of inflammatory bowel disease characterized by chronic inflammation of the gastrointestinal tract,influenced by genetic predisposition,gut microbiota dysbiosis,and environmental *** microbiota plays a crucial role in modulating immune response and intestinal inflammation and is associated with the onset and progression of ***,visceral adipose tissue,particularly creeping fat,a mesenteric adipose tissue characterized by hypertrophy and fibrosis,has been implicated in cD pathogenesis,inflammation,and *** bacteria from the gut microbiota may translocate into mesenteric adipose tissue,contributing to the formation of creeping fat and influencing cD *** creeping fat may be a protective barrier against bacterial invasion,its expansion can damage adjacent tissues,leading to *** gut microbiota through interventions such as fecal microbiota transplantation,probiotics,and prebiotics has shown potential in managing ***,more research is needed to clarify the mechanisms linking gut dysbiosis,creeping fat,and cD progression and develop targeted therapies for microbiota modulation and fat-related complications in patients with cD.

关键词： creeping fat Mesenteric adipose tissue Gut microbiota crohn’s disease Inflammatory bowel disease

Intestinal Flatulence in Pampus argenteus:changes in Gut Microbiota

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Journal of Ocean University of china 2025年第1期24卷 182-194页

作者： NIE Wenhao ZHANG Man ZHANG youyi LI yuanbo XU Shanliang hu Jiabao WANG yajun yAN Xiaojun Key Laboratory of Applied Marine Biotechnology Ministry of EducationNingbo UniversityNingbo 315832China Key Laboratory of Marine Biotechnology of Zhejiang Province Ningbo UniversityNingbo 315832China college of Marine Sciences Ningbo UniversityNingbo 315832China

Pampus argenteus is a commercially valuable species in many *** artificial cultivation has been impacted by intestinal flatulence,leading to increased ***,the role of gut microbiota in this process remains ***,this study utilized high-throughput sequencing of 16S rRNA genes to investigate the gut microbiota in both flatulent and healthy ***.A total of 227571 high-quality and classifiable reads,representing 312 Amplicon Sequence Variants(ASVs),were *** emerged as the predominant phylum in all samples,with the flatulent group displaying the highest relative abundance(85.3%).Microbial diversity was significantly greater in samples from water than those from *** analysis using Bray-curtis distance via cPcoA revealed distinct gut microbiota compositions between the samples with flatulence and the healthy ***-occurrence network analysis demonstrated that the bacterial community in the flatulent group exhibited disorder due to the high abundance of *** predictive analysis(PIcRUSt2)indicated that flatulence in *** was associated with impaired methane and lipid metabolism,potentially resulting in excessive methane synthesis utilizing hydrogen and acetic acid as substrates produced by clostridium sensu stricto 1,cetobacterium,and *** study holds significant implications for early diagnosis and prevention of intestinal flatulence through the regulation of gut microbiota.

关键词： Pampus argenteus gut microbiota 16S rRNA intestinal flatulence PIcRUSt2

THEcHORD GAUSS cURVATURE FLOW AND ITS L_(p)cHORDMINKOWSKI PROBLEM

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Acta Mathematica Scientia 2025年第1期45卷 161-179页

作者： Jinrong hu yong huANG Jian LU Sinan WANG School of Mathematics Hunan UniversityChangshaHunan Province410082China Institut für Diskrete Mathematik und Geometrie Technische Universität WienWiedner Hauptstrasse 8-101040WienAustria School of Mathematical Sciences South China Normal UniversityGuangzhou510631China School of Mathematics Hunan UniversityChangsha 410082China

In this paper,the L_(p)chord Minkowski problem is *** on the results shown in[20],we obtain a new existence result of solutions to this problem in terms of smooth measures by using a nonlocal Gauss curvature flow for ... 详细信息

关键词： L_(p)chord Minkowski problem new Monge-Ampere equation geometric fow

P-tuned FeN2 binuclear sites for boosted cO2 electro-reduction

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Journal of Energy chemistry 2025年第2期101卷 816-824页

作者： cao Guo Sanshuang Gao Jun Li Menglin Zhou Abdukader Abdukayum Qingquan Kong yingtang Zhou Guangzhi hu School of Materials and Energy Institute for Ecological Research and Pollution Control of Plateau Lakes School of Ecology and Environmental Science Yunnan University Xinjiang Key Laboratory of Novel Functional Materials chemistry College of Chemistry and Environmental Sciences Kashi University School of Mechanical Engineering Chengdu University National Engineering Research center for Marine Aquaculture Marine Science and Technology College Zhejiang Ocean University

The recycling of cO2through electrochemical processes offers a promising solution for alleviating the greenhouse effect;however,the activation of cO2and desorption of*cO in electrocatalytic cO2reduction（EcR） frequently encounter high energy barriers and competitive hydrogen evolution reactions（HERs）,which are urgent problems that need to be *** this study,a catalyst(P100-Fe-N/c) with homogeneous P-tuned FeN2binuclear sites（N2PFe-FePN2） was successfully synthesised,demonstrating satisfactory performance in the EcR to cO.P100-Fe-N/c attains a peak FEcOof 98.01% and a normalized TOF of664.7 h-1at-0.7 VRHE,surpassing the performance of the Fe binuclear catalyst without P and singleatoms *** the MEA cell,a FEcOexceeding 90% can still be *** functional theory analysis indicates that the asymmetric coordination configuration induced by the incorporation of P facilitates a reduction in the system's *** modulation of P results in the d-band centre of the catalyst being positioned closer to the Fermi level,which facilitates the interaction of the catalyst with cO2,allowing more electrons to be injected into the cO2molecule at the Fe binuclear sites and inhibiting the *** P-tuned FeN2binuclear sites effectively lower the*cO desorption barrier.

关键词： cO2 reduction reaction DFT calculation Diatomic catalyst Electrocatalysis Heteroatom doping

New Potential Barite Reference Materials for LA-Mc-IcP-MS Sulfur Isotope Analysis with Application to Hydrothermal Barite in the huayangchuan Deposit,Western china

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Journal of Earth Science 2025年第1期36卷 1-10页

作者： Jiali Fu Xinqian He Zhaochu hu Shuo yin Jian Ma Kaiyun chen Wen Zhang National Key Laboratory of Uranium Resource Exploration-Mining andNuclear Remote Sensing East China UniversityofTechnologyNanchang 330013China State Key Laboratory of Nuclear Resources and Environment East China University of TechnologyNanchang 330013China School of Earth Sciences East China University of TechnologyNanchang 330013China State Key Laboratory of Geological Processes and Mineral Resources China University of GeosciencesWuhan 430078China State Key Laboratory of continental Dynamics Department of GeologyNorthwest UniversityXi'an 710069China

Sulfur isotopes of S-bearing materials are powerful tools to trace various geological processes and sulfur sources in earth sciences,especially in ore deposits where sulfide-sulfate pair coprecipitates ***,in-situ S isotope determination of barite is challenging without natural matrix-matched reference *** this study,we present two natural barite reference materials(1-yS and 294-yS)for in-situ sulfur isotopic *** LA-Mc-IcP-MS laboratories were utilized to test theδ34S micron-scale homogeneity of 1-yS and 294-yS barites that have 2s repeatabilities of better than±0.45‰and±0.41‰,***,the in-situ analysis results are consistent with the results of the bulk analysis by GS-IRMS within *** grand meanδ~(34)S values of 1-yS(13.37‰±0.42‰,2s)and 294-yS(14.38‰±0.44‰,2s)are the final recommended values obtained from four independent *** the results confirm the suitability of 1-yS and 294-yS barite used as calibration materials with respect to in-situ S isotopic ***,the new developed barite reference materials were used as matrix-matched standard to calibrate the barite samples from the huayangchuan carbonatite-hosted U-polymetallic deposit(Qinling orogenic belt,western china)to obtainδ34S *** the temperaturedependentδ34S fractionation of barite-pyrite pair,we calculate the formation temperature of barite(i.e.,506 to 537°c)and theδ34S value of mineralizing fluid(i.e.,-7.11‰to-7.59‰)in the huayangchuan *** results indicate an involvement of sedimentary sulfur,presumably acting as a potential uranium source(e.g.,upper crustal materials)for the giant huayangchuan deposit.

关键词： LA-Mc-IcP-MS S isotope reference material barite geothermometry

Separation of the ionospheric and thermospheric contributions in the data from the Triple Ionosophere Photo Meter onboard the Feng-yun 3E satellite

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Science china Earth Sciences 2025年第1期68卷 172-184页

作者： Fang JIANG Tian MAO Jin-Song WANG Xiu-Qing hu Xiao-Xin ZHANG Liping FU Nan JIA Tianfang WANG National Space Science center Chinese Academy of SciencesBeijing100090China Beijing Key Laboratory of Space Environment Exploration Beijing100090China Key Laboratory of Environmental Space Situation Awareness Technology Beijing100090China National Satellite Meteorological center China Meteorological AdministrationBeijing100081China

The Triple Ionosphere Photo Meter(TRIPM)is a far ultraviolet nadir-view photometer that is onboard the secondgeneration,polar-orbiting chinese meteorological satellite Feng-yun 3E(Fy-3E),which was launched on July 5,*** has three channels,and each is used to measure different types of emissions:(1)135.6 nm airglow produced by the recombination of the O+ions and electrons in the absence of sunlight(nighttime channel);(2)135.6 nm airglow from the OI when sunlight is present(daytime/dusk-dawn 135.6 nm channel);and(3)Airglow in the N_(2)LBH of the TRIPM(daytime/dusk-dawn N_(2)LBH channel).Fy-3E is a satellite operating in the early morning ***,the data are mostly distributed on the dawndusk side or at times when the solar zenith angle is relatively *** this study,combined with simulation calculations,the data are *** further explore the application value of the data products,a model is used to separate the ionospheric radiative recombination contribution from the thermosphere photoelectron impact excitation contribution in the data from the daytime/dusk-dawn 135.6 nm *** approach not only improves the accuracy of O/N_(2)derived from the 135.6 nm channel and N_(2)LBH channel but also provides the ionospheric 135.6 nm radiance at the same time as the *** results show that the 135.6 nm radiance originating from the combination of O+and electrons extracted from the measurement data exhibits similar equatorial anomaly peak structure characteristics and seasonal variations as the corresponding GPS total electron content(TEc)*** the other hand,the separated 135.6 nm radiance generated from the thermosphere photoelectron collision excitation does not contain radiative recombination contributions;thus,the ionosphere influence is greatly avoided when the O/N_(2)is obtained.

关键词： Far ultraviolet 135.6 nm emission intensity Photoelectron impact excitation Radiative recombination excitation

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