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An analysis of F-doping in Li-rich cathodes

Rare Metals 2022年第6期41卷 1771-1796页

作者： Trent Seaby Tong-en Lin yu-Xiang Hu Qing-Hong yuan Lian-Zhou Wang Nanomaterials Centre School of Chemical Engineering and Australian Instiutle for Bioengineering and Nanotec hnologyThe University of QucenslandBrisbane QLD 4072Australia Key Laboratory of Advanced Functional Materials Education Ministry of China.Faculty of Materials and ManufacturingBeijing University of TechnologyBeijing 100124 China Centrefor Theoretical and Computational MolecularScience Australian Institute for Bioengineering and Nanotechnology The University of QueenslandBrisbane QLD 4072Australia

Li-rich materials,due to their high capacity(>250 mAh·g^(-1)),have recently been considered as an alternative to the current generation of cathode materials for Li-ion batteries(LIBs).However,their inferior cycling stability limits their practical *** is a common technique to solve this ***,anion doping remains relatively ***(F)is one of the most effective anion dopants owning to the improved capacity,cycling stability,and rate performance in *** explanations and experimental results,however,vary significantly from study to ***,we find that bulk F-doping significantly improves both rate performance and cycling stability,likely driven by charge compensation and greater ***,bulk F-doping occasionally improves capacity via enhanced activation and occasionally decreases capacity by preventing activation from *** F-doping has similar effects to bulk F-doping on capacity and stability,while significantly hindering the rate ***,the improvements in surface-doped materials do not appear to be a result of specific surface modification,and instead can be ascribed to the effect of fluorine on the near-surface bulk *** understanding of fluo-rine's influence on activation,in particular,is required to unlock the full potential of synergistic cation/anion co-doping.

关键词： Li-rich materials Fluorine dopingi Normalization analysis Electrochemical performance

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Troy: Efficient Service Deployment for Windows Systems

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Chinese Journal of Electronics 2024年第1期33卷 313-322页

作者： Deyu ZHANG yu XIE Mucong XU en CHenG Xiaoyan KUI Bangwen HE yunhao LI School of Computer Science and engineering Central South University

The modern university computer lab and kindergarden through 12th grade classrooms require a centralized solution to efficiently manage a large number of desktops. The existing solutions either bring virtualization overhead in runtime or requires loading a large image over 30 GB leading to an unacceptable network latency. In this work, we propose Troy which takes advantage of the differencing virtual hard disk techniques in Windows *** such, Troy only loads the modifications made on one machine to all other machines. Troy consists of two modules that are responsible to generate an initial image and merge a differencing image with its parent image, respectively. Specifically, we identify the key fields in the virtual hard disk image that links the differencing image and the parent image and find the modified blocks in the differencing images that should be used to replace the blocks in the parent image. We further design a lazy copy solution to reduce the I/O burden in image merging. We have implemented Troy on bare metal machines. The evaluation results show that the performance of Troy is comparable to the native implementation in Windows, without requiring the Windows environment.

关键词： Runtime Image synthesis Merging Loading Metals Hard disks Virtualization

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Profiles of and variations in aluminum species in PAC-MC used for the removal of blooming microalgae

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Journal of environmental Sciences 2021年第8期33卷 76-82页

作者： Xueyi Dong Xihua Cao Wenbin jiang Xiuxian Song Zhiming yu Shitao yu College of Chemical engineering Qingdao University of Science and TechnologyQingdao 266042China CAS Key Laboratory of Marine Ecology and environmental Sciences Institute of OceanologyChinese Academy of SciencesQingdao 266071China Functional Laboratory of Marine Ecology and environmental Science Qingdao National Laboratory for Marine Science and TechnologyQingdao 266237China University of Chinese Academy of Science Beijing 100049China Center for Ocean Mega-Science Chinese Academy of SciencesQingdao266071China

Polyaluminum chloride modified clay(PAC-MC)is a safe and efficient red tide control agent that has been studied and applied *** it is well known that the distribution of hydrolytic aluminum species in PAC affects its flocculation,little is known about the influence of particulars aluminum species on the microalgae removal efficiency of PAC-MC;this lack of knowledge creates a bottleneck in the development of more efficient MCs based on aluminum *** ferron method was used in this study to quantitatively analyze the distributions of and variations in different hydrolytic aluminum species during the process of microalgae removal by *** results showed that Ala,which made up 5%–20%of the total aluminum,and Alp,which made up 15%–55%of the total aluminum,significantly affected microalgae removal,with Pearson’s correlation coefficients of 0.83 and 0.89,*** of the aluminum in the PAC-MC sank rapidly into the sediments,but the rate and velocity of settlement were affected by the dose of modified *** optimal dose of PAC-MC for precipitating microalgae was determined based on its aluminum *** results provide guidance for the precise application of PAC-MC in the control of harmful algal blooms.

关键词： Modified clay Red tide Aluminum species Microalgal removal efficiency Ecological safety

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Large-scale experimental study on scour around offshore wind monopiles under irregular waves

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Water Science and engineering 2022年第1期15卷 40-46页

作者： Song-gui Chen en-yu Gong Xu Zhao Taro Arikawa Xin Chen Tianjin Research Institute for Water Transport engineering Tianjin 300456China College of Water Resources and Civil engineering China Agricultural UniversityBeijing 100083China Department of Civil and environmental engineering Chuo UniversityTokyo 112-8551Japan

The Keulegan-Carpenter(KC)number is the main dimensionless parameter that affects the local scour of offshore wind power monopile *** study conducted large-scale(1:13)physical model tests to study the local scour shape,equilibrium scour depth,and local scour volume of offshore wind power monopiles under the action of irregular waves with different KC *** experiments were carried out with the KC number ranging from 1.0 to *** a small KC number(KCen the KC number was less than 4,the scour mainly occurred on both cross-flow sides of the monopile with a low scour *** the KC number exceeded 4,the shape of the scour hole changed from a fan to an ellipse,and the maximum scour depth increased significantly with *** a large KC number(KC>6),the proposed method better predicted the equilibrium scour depth when the wave *** addition,according to the results of three-dimensional terrain scanning,the relationship between the local equilibrium scour volume of a single offshore wind power monopile and the KC number was *** provided a rational method for estimation of the riprap redundancy for monopile protection against scour.

关键词： Keulegan-Carpenter number Large-scale test Scour hole shape Equilibrium scour depth Local scour hole volume

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Comparative Analysis of Hina Gene Sequences in Wild (Hordeum spontaneum) and Cultivated (H. vulgare) Barleys

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Agricultural Sciences in China 2011年第9期10卷 1313-1322页

作者： LI Wei-tao jiang Qian-tao CHen Guo-yue PU Zhi-en LIU Ya-xi WANG Ji-rui ZHenG You-liang WEI yu-ming Triticeae Research Institute Sichuan Agricultural University Wenjiang 611130 P.R.China Key Laboratory of Southwestern Crop Germplasm Utilization Ministry of Agriculture/College of Agriculture Sichuan Agricultural University Ya＇an 625014 P.R.China

The Hina gene is one of the two known Hin genes for hardness, and its RNA expression is correlated with grain hardness and dry matter digestibility variation. In this study, only one clone ofHina gene was obtained from one barley accession. A total of 121 Hina gene sequences were isolated from 121 wild barley （Hordeum spontaneum） accessions in Israel, Iran, and Turkey, and then their molecular characteristics were compared with 97 Hina gene sequences from 74 cultivated barley （H. vulgare） lines in Europe and 23 landrace （H. vulgare） with global distribution and other 26 Hina gene sequences from cultivated barleys （H. vulgare） with unknown global distribution. Cis-acting regulatory element （CARE） searching revealed that there were different types of regulatory element for the Hina gene in wild and landrace/cultivated barleys. There were six consistent cis-acting binding sites in wild and landrace/cultivated barleys, whereas 8 to 16 inconsistent TATA-boxes were observed. In addition, three special elements （E2Fb, Spl, and boxS） were only observed in wild barley, while one （AT1-motif） was only found in landrace/cultivated barley. Forty-four deduced amino acid sequences of HINA from wild and landrace/cultivated barleys were obtained by deleting repetitive amino acid sequences, and they were clustered into two groups on the basis of Neighbor-Joining analysis. However, there was no obvious difference in the amino acid sequences of HINA between wild and landrace/cultivated barleys. Comparing to protein secondary structure of wheat PINA, it was indicated that HINA also existed a signal peptide. In addition, HINA was a hydrophilic protein on the basis of the protein properties and composition.

关键词： Hina secondary structure regulatory element grain hardness barley

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A Creative Computing Approach to Film-story Creation:A Proposed Theoretical Framework

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International Journal of Automation and computing 2020年第5期17卷 678-690页

作者： Hong-Wei Liu Hong-Rui Liu Hong-Ji Yang en-Ze yu Tianjin Foreign Studies University Tianjin 300204China San Jose State University San Jose 95192USA University of Leicester Leicester LE17RHEngland South China Business College Guangdong University of Foreign StudiesGuangzhou 510545China

The film industry is currently witnessing a severe shortage of good stories and a decline in storytelling ***,creative computing has been employed successfully in the humanities,especially in the fields of *** the similarities between the process of film-story creation and that of creative computing,we propose a theoretical framework across the two domains,where the exploratory,the combinational and the transformational rules are jointly utilized to generate new ideas and provide potential options in film-story *** framework consists of a film knowledge library,a creative computing system,an evaluation model and an output *** combination of creative computing and film story creation not only helps to produce novel storylines,shorten the creation cycle,and speed up film industry,but also contributes to the novelty and specificity of interdisciplinary studies.

关键词： Creative computing film-story creation creativity rules automatic generation human-like scriptwriting

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Reduced graphene oxide wrapped hollow molybdenum trioxide nanorod for high performance lithium-ion batteries

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Chinese Chemical Letters 2017年第12期28卷 2231-2234页

作者： Chenglong Yang Xiongwu Zhong yu jiang Yan yu Key Laboratory of Materials for energy Conversion Chinese Academy of SciencesDepartment of Chemistry and Materials ScienceUniversity of Science andTechnology of ChinaHefei 230026China State Key Laboratory of Fire Science University of Science and Technology of ChinaHefei 230026China

Reduced graphene oxide wrapped hollow molybdenum trioxide nanorods （MoO3@rGO） have been fabricated by a facile process. The MoO3@rCO shows improved lithium storage performance. It could deliver a high reversible capacity （842 mAh/g at 0.1 A/g）, excellent cycling stability （778 mAh/g at 0.1 A/g after 200 cycles） and excellent rate capability （455 mAh/g at 2A/g）. The excellent electrochemical performance could be attributed as the special core （MoO3）/sheath （rCO） structure, which could accommodate the volume change of MoO3 during lithiation/delithiation process. In addition, the rGO coating layer could improve the electronic conductivity of MOO3.

关键词： Lithium-ion batteriesAnodeMoO3rGOhigh performance

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Insight on corrosion behavior of a Cu-P-Cr-Ni steel with different Ni contents by electrochemical and periodic immersion corrosion experiments

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Journal of Iron and Steel Research International 2023年第3期30卷 580-590页

作者： Zhi-wei Lian Tian-en Peng Shuang Hu Bo He Xue-wen Hu Tao Zhu Bo jiang School of Materials Science and engineering University of Science and Technology BeijingBeijing 100083China Technical Center Ma’anshan Iron&Steel Co.Ltd.Ma’anshan 243041AnhuiChina

Corrosion behavior of Cu-P-Cr-Ni weathering steels with different nickel contents was studied by periodic immersion corrosion test for 72 *** mass loss method was used to evaluate the weatherability of weathering *** rust layers formed on weathering steel were characterized by scanning electron microscopy,X-ray diffraction,electron probe microanalysis,X-ray photoelectron spectroscopy,and electrochemical *** results of periodic immersion corrosion test for 72 h showed that the mass loss rates of Cu-P-Cr-0.14Ni steel and Cu-P-Cr-0.04Ni steel were 1.57 and 1.61 g/(m^(2)h),*** to the electrochemical experiment,the corrosion potentials of the two tested steels at the initial stage of corrosion were-0.6852 and-0.7037 V,*** the corrosion time reaching 72 h,the corrosion potential difference between the two tested steels was gradually *** the initial stage,NiO was formed in the rust layer and can dramatically promote the crystallization of corrosion products to improve the stability of the rust *** periodic immersion corrosion test for 72 h,Ni element had no obvious *** this time,it was mainly the enrichment of Cu and Cr elements in the form of CuO and Cr_(2)O_(3)in the rust layer that could further protect the matrix.

关键词： Weathering steel Ni Electrochemical experiment Periodic immersion corrosion Corrosion behavior

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Emerging binary nanostructure array enables multiple nanostructures

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National Science Review 2018年第5期5卷 608-610页

作者： Jun jiang Xuan Lei Shu-Hong yu Department of Chemistry University of Science and Technology of China

Binary nanostructure array, in which the sub-component arrays are made of two(or more) different materials or structures in one unit, has been demonstrated to be an innovative principle for designing and constructing functional devices and systems [1–5]. In particular,when the binary sub-components are at the interplay distance, intimate coupling between the two components becomes dominant and endows the macroscopic materials with novel properties

关键词： Emerging binary nanostructure array enables multiple nanostructures

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Transcriptomic analysis reveals essential microRNAs after peripheral nerve injury

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Neural Regeneration Research 2021年第9期16卷 1865-1870页

作者： yu Wang Shu Wang jiang-Hong He Key Laboratory for Neuroregeneration of jiangsu Province and Ministry of Education Co-innovation Center of NeuroregenerationNantong UniversityNantongJiangsu ProvinceChina

Studies have shown that microRNAs(miRNAs) mediate posttranscriptional regulation of target genes and participate in various physiological and pathological processes, including peripheral nerve injury. However, it is hard to select key miRNAs with essential biological functions among a large number of differentially expressed miRNAs. Previously, we collected injured sciatic nerve stumps at multiple time points after nerve crush injury, examined gene changes at different stages(acute, sub-acute, and post-acute), and obtained mRNA expression profiles. Here, we jointly analyzed mRNAs and miRNAs, and investigated upstream miRNAs of differentially expressed mRNAs using Ingenuity Pathway Analysis bioinformatic software. A total of 31, 42, 30, and 23 upstream miRNAs were identified at 1, 4, 7, and 14 days after rat sciatic nerve injury, respectively. Temporal expression patterns and biological involvement of commonly involved upstream miRNAs(miR-21, let-7, miR-223, miR-10 b, miR-132, miR-15 b, miR-127, miR-29 a, miR-29 b, and miR-9) were then determined at multiple time points. Expression levels of miR-21, miR-132, miR-29 a, and miR-29 b were robustly increased after sciatic nerve injury. Biological processes involving these miRNAs include multicellular organismal response to stress, positive regulation of the epidermal growth factor receptor signaling pathway, negative regulation of epithelial cell differentiation, and regulation of myocardial tissue growth. Moreover, we constructed mechanistic networks of let-7, miR-21, and miR-223, the most significantly involved upstream miRNAs. Our findings reveal that multiple upstream miRNAs(i.e., let-7, miR-21, and miR-223) were associated with gene expression changes in rat sciatic nerve stumps after nerve injury, and these miRNAs play an important role in peripheral nerve regeneration. This study was approved by the Experimental Animal Ethics Committee of jiangsu Province of China(approval No. 20190303-18) on March 3, 2019.

关键词： bioinformatic analysis Ingenuity Pathway Analysis mechanistic network microRNA peripheral nerve injury peripheral nerve regeneration RNA sequencing sciatic nerve crush

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