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Tungsten chalcogenides as anodes for potassium-ion batteries

Tungsten 2024年第2期6卷 278-292页

作者： yu-han wu Wei-Hao Xia yun-Zhuo Liu Peng-Fei Wang yu-hang Zhang Jin-Ru Huang Yang Xu De-Ping Li Li-Jie Ci School of Environmental and Chemical Engineering Shenyang University of TechnologyShenyang 110870China Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education) Nankai UniversityTianjin 300071China State Key Laboratory of Advanced Welding and Joining School of Materials Science and EngineeringHarbin Institute of Technology(Shenzhen)Shenzhen 518055China Department of Chemistry University College LondonLondon WC1H 0AJUnited Kingdom

Potassium-ion batteries(PIBs)by virtue of their strong cost competitiveness and similar electrochemical properties to lithiumion batteries have been deemed to be a promising electrochemical energy storage *** promote the application in the commercial market,developing electrode materials with high specifi c capacities,superior cycling stability,and reliable safety is of great *** materials as an important component of PIBs play a decisive role,among which twodimensional transition metal chalcogenides(2D TMCs)have attracted wide attention owing to their unique material and electrochemical *** the 2D TMCs’family,molybdenum chalcogenides as fl agship are the most studied materials and demonstrated the potential as *** the deepening of research on 2D TMCs,another shining member that possesses similar properties to molybdenum chalcogenides,tungsten chalcogenides(WS_(2),WSe_(2),and WTe_(2)),has aroused tremendous *** many inspiring results,various challenges remain to be further addressed;meanwhile,some results are still unclear and ***,this review fi rst introduces their material properties and electrochemical storage ***,we systematically overview the research progress and put forward promoting improvement ***,challenges and opportunities that would be future research directions are discussed.

关键词： Electrochemical energy storage Potassium-ion batteries Anodes Tungsten chalcogenides

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传统村落旅游生计转型意愿及影响机制研究——以古丈县默戎镇龙鼻嘴村为例

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人文地理 2024年第2期39卷 181-192页

作者：张平周国华余翰武伍国正湖南师范大学地理科学学院长沙410081 湖南科技大学建筑与艺术设计学院湘潭411201 湖南师范大学地理空间大数据挖掘与应用湖南省重点实验室长沙410081

农户生计状况是实现乡村振兴和乡村可持续发展过程中需要关注的重点,旅游作为当前传统村落开发的重要方式,直接给当地农户的生计类型选择带来深刻影响。文章以湖南省古丈县默戎镇龙鼻嘴村为案例地,通过笔者对政府和企业的走访,以及入户... 详细信息

农户生计状况是实现乡村振兴和乡村可持续发展过程中需要关注的重点,旅游作为当前传统村落开发的重要方式,直接给当地农户的生计类型选择带来深刻影响。文章以湖南省古丈县默戎镇龙鼻嘴村为案例地,通过笔者对政府和企业的走访,以及入户调查获取数据,以可持续生计框架为基础构建了旅游驱动下传统村落农户生计转型分析框架和农户生计资本评价指标体系,详细分析了“墨戎苗寨”旅游开发中结构和制度的转变对当地农户生计的影响,并探讨了导致农户生计转型的影响机制。研究发现:(1)旅游发展使农户生计策略发生转变,旅游与传统的生计方式组合形成了多样化的农户生计组合形式;(2)农户生计策略出现转型和分化,形成了旅游主导型、旅游务工型、参与旅游型、务工主导型、传统纯农型和半工半农型6种类型农户;(3)不同生计策略农户,生计资本水平和转型意愿均存在差异;(4)“墨戎苗寨”形成了在政府和企业外部支持下,农户内生动力充分发展的长效机制,旅游成为农户传统生计的重要补充,提升了其生计资本。

关键词：农户生计旅游驱动生计转型机制传统村落

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Continuum Model for Electronic Polarization Based on a Novel Dielectric Response Function

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Chinese Journal of Chemical Physics 2009年第5期22卷 481-488,I0001页

作者： Quan-deWang han-yu wu Ke-xiang Fu Xiang-yuan Li College of Chemical Engineering Sichuan University Chengdu 610065 China

A generalized response function based on the use of dielectric spectra for dielectric relaxation process is derived. We apply the general response function to the special case in order to examine how special dielectric relaxation functions developed by other authors for solvent relaxation can be derived based on our formulations. Three typical solvents, water, methanol, and acetonitrile are used to investigate the electronic polarization processes of polar solvents. The solvent electronic polarization process is shown after a linear variation with the external electric field imposed on the solvent. The results show a conclusion that the electronic polarization of the solvents will accompany the electronic transition synchronously, without time lag.

关键词： Response function Dielectric relaxation Electronic polarization Continuummodel

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Chicken chromatin accessibility atlas accelerates epigenetic annotation of birds and gene fine-mapping associated with growth traits

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Zoological Research 2023年第1期44卷 53-62页

作者： Xiao-Ning Zhu yu-Zhe Wang Chong Li han-yu wu Ran Zhang Xiao-Xiang Hu State Key Laboratory of Agrobiotechnology College of Biological SciencesChina Agricultural UniversityBeijing 100193China National Research Facility for Phenotypic and Genotypic Analysis of Model Animals(Beijing) China Agricultural UniversityBeijing 100193China

The development of epigenetic maps, such as the ENCODE project in humans, provides resources for gene regulation studies and a reference for research of disease-related regulatory elements. However,epigenetic information, such as a bird-specific chromatin accessibility atlas, is currently lacking for the thousands of bird species currently *** major genomic difference between birds and mammals is their shorter introns and intergenic distances, which seriously hinders the use of humans and mice as a reference for studying the function of important regulatory regions in birds. In this study, using chicken as a model bird species, we systematically compiled a chicken chromatin accessibility atlas using 53 Assay of Transposase Accessible Chromatin sequencing(ATAC-seq)samples across 11 tissues. An average of 50 ?796open chromatin regions were identified per sample,cumulatively accounting for 20.36% of the chicken genome. Tissue specificity was largely reflected by differences in intergenic and intronic peaks, with specific functional regulation achieved by two mechanisms: recruitment of several sequence-specific transcription factors and direct regulation of adjacent functional genes. By integrating data from genome-wide association studies, our results suggest that chicken body weight is driven by different regulatory variants active in growth-relevant tissues. We propose CAB39L(active in the duodenum), RCBTB1(muscle and liver), and novel long non-coding RNA ENSGALG00000053256(bone) as candidate genes regulating chicken body weight. Overall, this study demonstrates the value of epigenetic data in fine-mapping functional variants and provides a compendium of resources for further research on the epigenetics and evolution of birds and mammals.

关键词： Chicken Chromatin accessibility atlas ATAC-seq Tissue-specific OCRs GWAS Growth traits

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Targeting lentiviral vectors to primordial germ cells(PGCs):An efficient strategy for generating transgenic chickens

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Zoological Research 2020年第3期41卷 281-291页

作者： Zi-Qin Jiang han-yu wu Jing Tian Ning Li Xiao-Xiang Hu College of Biological Sciences China Agricultural UniversityBeijing 100094China State Key Laboratory of Agro-Biotechnology China Agricultural UniversityBeijing 100094China

Recent advances in avian transgenic studies highlight the possibility of utilizing lentiviral vectors as tools to generate transgenic chickens. However, low rates of gonadal chimerism and germ line transmission efficiency still limit the broad usage of this method in creating transgenic chickens. In this study, we implemented a simple strategy using modified lentiviral vectors targeted to chicken primordial germ cells(PGCs) to generate transgenic chickens. The lentiviral vectors were pseudotyped with a modified Sindbis virus envelope protein(termed M168) and conjugated with an antibody specific to PGC membrane proteins. We demonstrated that these optimized M168-pseudotyped lentiviral vectors conjugated with SSEA4 antibodies successfully targeted transduction of PGCs in vitro and in vivo. Compared with the control, 50.0%–66.7% of chicken embryos expressed green fluorescent protein(GFP) in gonads transduced by the M168-pseudotyped lentivirus. This improved the targeted transduction efficiency by 30.0%–46.7%. Efficient chimerism of exogenous genes was also observed. This targeting technology could improve the efficiency of germ line transmission and provide greater opportunities for transgenic poultry studies.

关键词： M168-pseudotyped lentiviral vectors Primordial germ cells Targeted transduction Transgenic chickens SSEA4

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Breather Interaction Properties Induced by Self-Steepening and Space-Time Correction

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Chinese Physics Letters 2020年第4期37卷 9-13页

作者： yu-han wu Chong Liu Zhan-Ying Yang Wen-Li Yang School of Physics Northwest UniversityXi'an 710127 Shaanxi Key Laboratory for Theoretical Physics Frontiers Xi'an 710127 NSFC-SPTP Peng Huanwu Center for Fundamental Theory Xi'an 710127 Institute of Modern Physics Northwest UniversityXi7an 710127

We study the properties of breather interactions in nonlinear Kerr media with self-steepening and space-time correction and with either self-focusing or self-defocusing nonlinearity,and present a new family of exact breather solutions via the Darboux transformation with a special-designed quadratic spectral *** contrast to the previous results of the nonlinear Schrodinger equation(NLSE)hierarchy,we show that the relative phase of colliding breathers has a significant effect on the collision *** particular,only the out-of-phase interactions can generate small amplitude waves at the collision center,which are analogous to the NLSE superregular *** results will deepen our understanding of the properties of breather interactions and they will offer the possibility of experimental observations of super-regular breather dynamics in systems with self-steepening and space-time correction.

关键词： parameter. collision nonlinear

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A Green Strategy to Synthesize Ag/Ag3PO4/Chitosan Composite Photocatalysts and Their Photocatalytic Degradation Performance under Visible Light Irradiation

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Journal of Electronic Science and Technology 2020年第2期18卷 138-150页

作者： Peng-Cheng wu Hui-Li Peng yu-han wu Lei Li Xiao-Rui Hao Bang-Hua Peng Gui-Hua Meng Jian-Ning wu Zhi-Yong Liu School of Chemistry and Chemical Engineering Shihezi UniversityShihezi 832003 Key Laboratory of Materials-Oriented Chemical Engineering of Xinjiang Uygur Autonomous Region Shihezi UniversityShihezi 832003 Engineering Research Center of Materials-Oriented Chemical Engineering of Xinjiang Bingtuan Shihezi 832003 Shandong yuhuang New Energy Technology Co. Ltd.Heze 274000 College of Chemistry Chemical Engineering and Materials ScienceSoochow UniversitySuzhou 215123 Tsinghua Shenzhen International Graduate School Tsinghua UniversityShenzhen 518055

In this work, the plasmonic Ag/Ag3PO4/chitosan(Ag/Ag3PO4/CS) composite photocatalyst was prepared by a low-temperature strategy. Environmentally friendly CS plays triple vital roles in this composite. First, it was devoted to in situ reducing metallic silver from silver ions of Ag3PO4. Also, as the carrier of Ag/Ag3PO4 nanoparticles,CS can effectively prevent aggregation. Furthermore, benefitting from the settlement of hydrophilic CS, the prepared composite could be easily separated and recovered from the solution system. X-ray diffraction(XRD), the scanning electron microscope, energy-dispersive X-ray spectroscopy(EDS), ultraviolet-visible(UV-vis) diffused reflectance spectroscopy, and X-ray photoelectron spectroscopy(XPS) were employed to characterize the properties of materials. The results of photo-decomposition testing showed that the Ag/Ag3PO4/CS composite possessed good activity for the decomposition of Rhodamine B(Rh B) under visible light.

关键词： silver visible devoted

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Two-dimensional precise figuring of 500 mm-long X-ray mirror using one-dimensional ion beam system

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Advances in Manufacturing 2024年第1期12卷 177-184页

作者： Qiu-Shi Huang han-Dan Huang Qiao-yu wu Jun yu Zhong Zhang Zhan-Shan Wang MOE Key Laboratory of Advanced Micro-Structured Materials Institute of Precision Optical Engineering(IPOE)School of Physics Science and EngineeringTongji UniversityShanghai200092People’s Republic of China Shanghai Professional Technical Service Platform for Full-Spectrum and High-Performance Optical Thin Film Devices and Applications Tongji UniversityShanghai200092People’s Republic of China Shanghai Frontiers Science Center of Digital Optics Tongji UniversityShanghai200092People’s Republic of China

In this study,a new method was developed to realize two-dimensional(2D)figure correction of grazing-incidence X-ray mirrors using a one-dimensional(1D)ion-beam figuring system.A mask of holes was specifically designed to generate removal functions at different widths and extend the figuring capability over a wide ***,a long mirror could be *** this method,the surface height root-mean-square(RMS)error of the center area of 484 mm×16 mm was reduced from 11.49 nm to 2.01 nm,and the 1D meridional RMS error reached 1.0 *** proposed method exhibits high precision and cost effectiveness for production of long X-ray mirrors.

关键词： Long-size mirrors Ion beam figuring Two-dimensional figure correction Mask

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Transcriptomic and cellular decoding of scaffolds-induced suture mesenchyme regeneration

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International Journal of Oral Science 2024年第2期16卷 306-321页

作者： Jiayi wu Feifei Li Peng yu Changhao yu Chuyi han Yitian Wang Fanyuan yu Ling Ye State Key Laboratory of Oral Diseases&National Center for Stomatology&National Clinical Research Center for Oral Diseases&West China Hospital of Stomatology Sichuan UniversityChengduChina State Key Laboratory of Oral Diseases&National Center for Stomatology&National Clinical Research Center for Oral Diseases&Department of Cariology and Endodontics West China Hospital of StomatologySichuan UniversityChengduChina State Key Laboratory of Oral Diseases&National Center for Stomatology&National Clinical Research Center for Oral Diseases&Department of Pediatric Dentistry West China Hospital of StomatologySichuan UniversityChengduChina

Precise orchestration of cell fate determination underlies the success of scaffold-based skeletal *** extensive studies on mineralized parenchymal tissue rebuilding,regenerating and maintaining undifferentiated mesenchyme within calvarial bone remain very challenging with limited advances *** knowledge has evidenced the indispensability of rebuilding suture mesenchymal stem cell niches to avoid severe brain or even systematic *** to date,the absence of promising therapeutic biomaterials/scaffolds *** reason lies in the shortage of fundamental knowledge and methodological evidence to understand the cellular fate regulations of *** address these issues,in this study,we systematically investigated the cellular fate determinations and transcriptomic mechanisms by distinct types of commonly used calvarial *** data elucidated the natural processes without scaffold transplantation and demonstrated how different scaffolds altered in vivo cellular responses.A feasible scaffold,polylactic acid electrospinning membrane(PLA),was next identified to precisely control mesenchymal ingrowth and self-renewal to rebuild non-osteogenic suture-like tissue at the defect center,meanwhile supporting proper osteointegration with defect bony ***,transcriptome analysis and cellular mechanisms underlying the well-orchestrated cell fate determination of PLA were *** study for the first time cellularly decoded the fate regulations of scaffolds in suture-bony composite defect healing,offering clinicians potential choices for regenerating such complicated injuries.

关键词： injuries healing suture

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Climatic impacts induced by winter wheat irrigation over North China simulated by the nonhydrostatic RegCM4.7

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Advances in Climate Change Research 2024年第2期15卷 197-210页

作者： Jia wu Zhen-yu han Xue-Jie GAO Zheng-Jia LIU National Climate Centre China Meteorological AdministrationBeijing 100081China Key Laboratory for Climate Studies China Meteorological AdministrationBeijing 100081China Climate Change Research Center Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters Nanjing University of Information Science and TechnologyNanjing 210044China Institute of Geographic Sciences and Natural Resources Research Chinese Academy of SciencesBeijing 100101China

Quantification of the impact of winter wheat irrigation on the climate and the occurrence of extreme climatic events over North China is crucial for regional adaptation *** related studies mainly focused on the impact on surface processes;however,few focused on the effects of extreme events using high-resolution nonhydrostatic regional climate ***,the 9-km-resolution nonhydrostatic RegCM4.7 was coupled with a crop irrigation scheme and an updated winter wheat irrigation dataset to better simulate irrigation *** experiments were conducted with and without winter wheat irrigation to isolate the effects of *** showed that irrigation simulation reduces the model biases in temperature,precipitation,latent heat flux,soil moisture,sensitive heat flux,and top-layer soil ***,it also reduces the bias and increases the correlation with observations obtained in irrigated areas,especially in summer,indicating better representation of irrigation *** wheat irrigation tends to cause substantial cooling of the local surface maximum,minimum,and mean air temperatures(by-1.68,-0.34,and-0.79℃,respectively)over irrigated areas of North China,with the largest changes observed in relation to maximum ***,precipitation is found to increase during spring and summer,which is strongly related to water vapor transport in the lower levels of the *** analyses indicated that the number of annual mean hot days decrease(-13.9 d),whereas the number of both comfort days(+10.2 d)and rainy days(days with total precipitation greater than 1 mm:+6.6 d)increase over irrigated areas,demonstrating beneficial feedback to human perception and ***,although the heat wave risk increases(number of annual mean heat wave days:+5.8 d),the impact is limited to small areas within irrigated ***,no notable change was found in terms of heavy rainfall events and precipitation intensity

关键词： Nonhydrostatic regional climate model Irrigation effect Extreme events North China

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