检索结果-南通市图书馆

Nano Research 2025年第1期18卷 315-322页

作者： Kun-Peng Yang Song Xie Zi-Meng Han Hao-cheng Liu Chong-Han Yin Wen-Bin Sun Zhang-Chi Ling Huai-Bin Yang De-Han Li Qing-Fang Guan Shu-Hong Yu Department of Chemistry New Cornerstone Science LaboratoryInstitute of Biomimetic Materials&ChemistryAnhui Engineering Laboratory of Biomimetic MaterialsDivision of Nanomaterials&ChemistryHefei National Research Center for Physical Sciences at the MicroscaleUniversity of Science and Technology of ChinaHefei 230026China Institute of Innovative Materials Department of Materials Science and EngineeringDepartment of ChemistrySouthern University of Science and TechnologyShenzhen 518055China

Separators play a critical role in lithium-ion ***,the restrictions of thermal stability and inferior electrical performance in commercial polyolefin separators significantly limit their applications under harsh ***,we report a cellulose-assisted self-assembly strategy to construct a cellulose-based separator massively and *** an ultrahigh ionic conductivity in electrolytes of 3.7 mS·cm^(-1) and the ability to regulate ion transport,the obtained separator is a promising alternative for high-performance lithium-ion *** addition,integrated with high thermal stability,the cellulose-based separator endows batteries with high safety at high temperatures,greatly expanding the application scenarios of energy storage devices in extreme environments.

关键词： lithium-ion batteries bio-inspired materials battery separators cellulose nanofiber ultrahigh ionic conductivity high safety

Hybrid algorithm for project scheduling with capacity constraint

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Systems Engineering and Electronics 2008年第5期19卷 1041-1046页

作者： cheng Xu Wu cheng Dept. of Automation Tsinghua Univ. Beijing 100084 P. R. China China Academy of Electronics Information Technology Beijing 100041 P. R. China

Motivated by the projects constrained by space capacity and resource transporting time, a project scheduling probIem with capacity constraint was modeled. A hybrid algorithm is proposed, which uses the ideas of bi-level scheduling and project decomposition technology, and the genetic algorithm and tabu search is combined. Topological reordering technology is used to improve the efficiency of evaluation. Simulation results show the proposed algorithm can obtain satisfied scheduling results in acceptable time.

关键词： project scheduling capacity constraint heuristic algorithm bi-level scheduling.

New Study of Anshunsaurus huangnihensis cheng,2007(Reptilia:Thalattosauria):Revealing its Transitional Position in Askeptosauridae

在线全文

学校读者我要写书评

暂无评论

Acta Geologica Sinica(English Edition) 2011年第6期85卷 1231-1237页

作者： cheng Long CHEN Xiaohong ZHANG Baomin CAI Yongjian Key laboratory of Biogeology and Environmental Geology of the Ministry of Education China University of Geoscineees Wuhan 430074 China Wuhan Institute of Geology and Mineral Resources Wuhan 430223 China Wuhan Institute of Earthquake Engineering Wuhan 430071 China

The skull ofAnshunsaurus huangnihensis cheng, 2007, especially the skull roof, is described in detail in this paper. Compared to other genera and species of Askeptosauroidea, Anshunsaurus huangnihensis has some important transitional characters from Askeptosaurus italicus to Anshunsaurus huangguoshuensis： the rostral length related to the skull length between Askeptosaurus italicus and Anshunsaurus huangguoshuensis; the postfrontal existing but distinctly reduced; the posterolateral process relatedly short and overlapping the parietal. The phylogenetic analysis weakly supports the evolutional progress from Anshunsaurus huangnihensis to Anshunsaurus huangguoshuensis. The skeletal ratios indicated that the node among the Askeptosauridae ingroup. The evolutional direction of Askeptosauridae should be from Askeptosaurus italicus to Anshunsaurus huangguoshuensis. The skeletal ratios indicated that the evolutional progress is Askeptosaurus italicus - Anshunsaurus huangnihensis - Anshunsaurus huangguoshuensis. In biogeography provinces, the Askeptosauroidea taxa from south China have a close relationship with those from western Tethys; however, Xinpusaurus from the Late Triassic is more related to those from the eastern Pacific.

关键词： Thalattosaur Anshunsaurus Triassic phylogeny

An accurate determination of the Hubble constant from baryon acoustic oscillation datasets

在线全文

学校读者我要写书评

暂无评论

Science China(Physics,Mechanics & Astronomy) 2015年第9期58卷 103-108页

作者： cheng cheng HUANG QingGuo State Key Laboratory of Theoretical Physics Institute of Theoretical Physics Chinese Academy of Sciences University of the Chinese Academy of Sciences

Even though the Hubble constant cannot be significantly determined just by the low-redshift Baryon Acoustic Oscillation(BAO)data, it can be tightly constrained once the high-redshift BAO data are combined. We combined BAO data from 6d FGS, BOSS DR11 clustering of galaxies, Wiggle Z and z = 2.34 from BOSS DR11 quasar Lyman-α forest lines to get H0= 68.17+1.55-1.56 km s-1Mpc-1. In addition, we adopted the simultaneous measurements of H(z) and DA(z) from the two-dimensional two-point correlation function from BOSS DR9 CMASS sample and two-dimensional matter power spectrum from SDSS DR7 sample to obtain H0=(68.11±1.69) km s-1Mpc-1. Finally, combining all of the BAO datasets, we conclude that H0=(68.11±0.86) km s-1Mpc-1, a1.3% determination.

关键词： Hubble constant baryon acoustic oscillation large-scale structure

Identification methods for anomalous stress region in coal roadways based on microseismic information and numerical simulation

在线全文

学校读者我要写书评

暂无评论

International Journal of Mining Science and Technology 2017年第3期27卷 525-530页

作者： Liu Chao Li Shugang cheng cheng cheng Xiaoyu College of Safety Science and Engineering Xi'an University of Science & Technology Xi'an 710054 China Key Laboratory of Western Mine Exploitation and Hazard Prevention Ministry of Education Xi'an University of Science & Technology Xi'an 710054 China

It is believed that the microseismicity induced by mining effect and gas gradient disturbance stress is a precursor to the essential characteristics of roadway unstability. In order to effectively identify and evaluate the stability of coal roadways in the process of mine development and extraction, a microseismic monitoring system was deployed for the study of the stress evolution process, damage degree and distribution characteristics in the tailgate and headgate. The mine under study is the 62113 outburst working face of Xin Zhuangzi coalmine in Huainan mining area. The whole process of microfractures initiation,extension, interaction and coalescence mechanisms during the progressive failure processes of the coal rock within the delineated and typical event clusters were investigated by means of a two dimensional realistic failure process analysis code(RFPA2D-Flow). The results show that the microseismic events gradually create different-sized event clusters. The microseismicity of the tailgate is significantly higher than that of the headgate. The study indicates that the greater anomalous stress region matches the area where microfractures continuously develop and finally connect to each other and form a fissure *** to the mine layout and stress concentration, the ruptured area is mainly located on the left shoulder of the tailgate roof. The potential anomalous stress region of the coal roadway obtained by numerical simulation is relatively in good agreement with the trend of spatial macro evolution of coal rock microfractures captured by the microseismic monitoring system. The research results can provide important basis for understanding instability failure mechanism of deep roadway and microseismic activity law in complex geologic conditions, and it ultimately can be used to guide the selection and optimization of reinforcement and protection scheme.

关键词： Microseismic monitoring technology Numerical simulation Anomalous stress region Event clusters Microcracks

Measurement and Characterisation of a Diffuse Acoustic Field Using a Phased Array

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Mechanical Engineering 2021年第6期34卷 262-270页

作者： Jingwei cheng National Safety Engineering Technology Research Centre for Pressure Vessels and Pipelines Hefei General Machinery Research Institute Co.Ltd.Hefei 230031China

A diffuse acoustic field has been increasingly used to infer temporal changes in the structures,such as early dislo-cations and *** study explores three different techniques to characterise acoustic field by using a single ultrasonic phased *** first two techniques are proposed to measure spatial uniformity of wave field by examining differences in the integral of energy and the maximum energy respectively at multiple inspection *** third one is developed to evaluate the degree of phase coherence between propagating waves transmitted sequentially by two neighbouring array *** efficacy of these techniques are investigated by examining their metrics on simulations and well-known *** results suggest that two selected metrics can be used to quantitatively estimate the diffuse field start time as well as the field size by comparing their value with the idealised diffuse state(15%for the energy integral metric,ηarea and 1 for the phase coherence metric,ηphase)and identifying the convergence start point.

关键词： Diffuse wave field Ultrasonic phased array Sensing Signal processing

Comparing T-and B-cell responses to COVID-19 vaccines across varied immune backgrounds

在线全文

学校读者我要写书评

暂无评论

Signal Transduction and Targeted Therapy 2023年第6期8卷 3029-3038页

作者： Zhen Cui wenxin Luo Ruihong Chen Yalun Li Zhoufeng Wang Yong Liu Shuo Liu LeiLei Feng Zijing Jia Ruixin cheng Jun Tang Weijin Huang Yanjun Zhang Huawen Liu Xiangxi Wang Weimin Li CAS Key Laboratory of Infection and Immunity National Laboratory of MacromoleculesInstitute of BiophysicsChinese Academy of SciencesBeijing100101China Department of Respiratory and Critical Care Medicine Institute of Respiratory HealthPrecision Medicine CenterPrecision Medicine Key Laboratory of Sichuan ProvinceFrontiers Science Center for Disease-related Molecular NetworkWest China HospitalSichuan UniversityChengdu610041China Precision Medicine Center Precision Medicine Key Laboratory of Sichuan ProvinceFrontiers Science Center for Disease-related Molecular NetworkWest China HospitalSichuan UniversityChengdu610041China Department of Neurology Chongqing University Three Gorges HospitalChongqing UniversityChongqingChina Division of HIV/AIDS and Sex-transmitted Virus Vaccines Institute for Biological Product ControlNational Institutes for Food and Drug Control(NIFDC)No.31 Huatuo StreetDaxing DistrictBeijing102629China Department of Microbiology Zhejiang Provincial Center for Disease Control and PreventionHangzhouChina Department of Oncology Chongqing University Three Gorges HospitalChongqing UniversityChongqingChina

The emergence of adapted variants of the SARS-CoV-2 virus has led to a surge in breakthrough infections worldwide.A recent analysis of immune responses in people who received inactivated vaccines has revealed that individuals with no prior infection have limited resistance to Omicron and its sub-lineages,while those with previous infections exhibit a significant amount of neutralizing antibodies and memory B ***,specific T-cell responses remain largely unaffected by the mutations,indicating that T-cell-mediated cellular immunity can still provide ***,the administration of a third dose of vaccine has resulted in a marked increase in the spectrum and duration of neutralizing antibodies and memory B cells in vivo,which has enhanced resistance to emerging variants such as BA.2.75 and *** results highlight the need to consider booster immunization for previously infected individuals and the development of novel vaccination *** rapid spread of adapted variants of the SARS-CoV-2 virus presents a significant challenge to global *** findings from this study underscore the importance of tailoring vaccination strategies based on individual immune backgrounds and the potential need for booster shots to combat emerging *** research and development are crucial to discovering new immunization strategies that will effectively protect public health against the evolving virus.

关键词： vaccines immunity adapted

Quantitative simulation and prediction of extreme geological events

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Science China Earth Sciences 2022年第6期65卷 1012-1029页

作者： Qiuming cheng School of Earth Science and Engineering Sun Yat-Sen UniversityZhuhai 915000China State Key Lab of Geological Processes and Mineral Resources China University of GeosciencesBeijing 100083China

The systematic study of extreme geological events(such as plate collision and subduction, extreme cold and extreme hot events, biological extinction and revival, earthquakes, volcanoes, mineralization, and oil accumulation) that occurred during the evolution of the earth is essential not only for understanding the “abrupt changes in the evolution of the earth”, but also for an in-depth understanding of the co-evolution of material-life-environment of the livable earth. However, due to the temporal and spatial anomalies and complexity of extreme geological events, classical mathematical models cannot be effectively applied to quantitively describe such events. After comparative studies of many types of geological events, the author found that such extreme geological events often depict “singular” characteristics(abnormal accumulation or depletion of matter or massive release or absorption of energy in a small space or time interval). On this basis, the author proposes a unified definition of extreme geological events, a new concept of “fractal density” and a “local singularity analysis” method for quantitative description and modeling of extreme geological events. Applications of these methods to several types of extreme geological events have demonstrated that the singularity theory and methods developed in the current research can be used as general approaches for the characterization, simulation, and prediction of geological events.

关键词： Mathematical geosciences Nonlinearity Geocomplexity Multifractals Chaos Phase transition Multiplicative cascade processes

同方期刊数据库

基于细节增强和多颜色空间学习的联合监督水下图像增强算法

在线全文

学校读者我要写书评

暂无评论

现代电子技术 2025年第1期48卷 23-28页

作者：胡锐程家亮胡伏原苏州科技大学信息化建设与管理中心江苏苏州215009 苏州科技大学电子与信息工程学院江苏苏州215009

由于水下特殊的成像环境,水下图像往往具有严重的色偏雾化等现象。因此文中根据水下光学成像模型设计了一种新的增强算法,即基于细节增强和多颜色空间学习的无监督水下图像增强算法(UUIE-DEMCSL)。该算法设计了一种基于多颜色空间的增... 详细信息

由于水下特殊的成像环境,水下图像往往具有严重的色偏雾化等现象。因此文中根据水下光学成像模型设计了一种新的增强算法,即基于细节增强和多颜色空间学习的无监督水下图像增强算法(UUIE-DEMCSL)。该算法设计了一种基于多颜色空间的增强网络,将输入转换为多个颜色空间(HSV、RGB、LAB)进行特征提取,并将提取到的特征融合,使得网络能学习到更多的图像特征信息,从而对输入图像进行更为精确的增强。最后,UUIE-DEMCSL根据水下光学成像模型和联合监督学习框架进行设计,使其更适合水下图像增强任务的应用场景。在不同数据集上大量的实验结果表明,文中提出的UUIE-DEMCSL算法能生成视觉质量良好的水下增强图像,且各项指标具有显著的优势。

关键词：水下图像增强多颜色空间学习无监督学习细节增强特征提取特征融合

Advances in ethnopharmacology,phytochemistry and pharmacology of Erigerontis Herba and its Chinese medicine prescriptions

同方期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

Traditional Medicine Research 2025年第1期10卷 44-61页

作者： Yang Zhou Yuan-Yan Huang Ding-Yue Shang Ying Chen Meng Tian cheng-Yu Jin Xin Lu Bing-Chun Yan Han-Qing Pang Institute of Translational Medicine School of MedicineYangzhou UniversityYangzhou 225009China Jiangsu Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Treatment of Senile Diseases Yangzhou UniversityYangzhou 225009China School of Medicine Nanjing University of Chinese MedicineNanjing 210023China State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources Guangxi Normal UniversityGuiling 541004China.

Erigerontis Herba(EH),the dried whole plant of Erigeron breviscapus,is well-known for circulating blood,activating meridians to alleviate pain,expelling wind,and clearing away *** has been extensively utilized in southern China for the treatment of stroke hemiplegia,chest stuffiness and pains,rheumatic arthralgia,headache,and *** review focuses on the botany,ethnopharmacology,phytochemistry,pharmacology and toxicity of EH and its related prescriptions to offer new insights for prospective research of *** information about EH was retrieved from ancient records and books,PubMed,China National Knowledge Infrastructure,Chinese Pharmacopoeia,Web of Science,Doctoral and Master’s Theses,and various electronic *** is a member of Compositae family and is mainly grown in southern *** Chinese medicine records that EH has the effects of circulating blood and removing blood stasis,expelling wind,and removing cold,as well as relieving rigidity of muscle and relieving *** now,nearly 200 ingredients have been characterized from EH,including flavonoids,caffeoyls,aromatic acids,coumarins,pentacyclic terpenoids,volatile oil and other *** extracts,EH related prescriptions(Dengzhan Xixin injection,Dengzhan Shengmai capsules,etc.)or compounds(scutellarin,scutellarein,etc.)possessed obvious therapeutic effects of ischemic stroke,cerebral hemorrhage,myocardial infarction,Alzheimer’s disease,diabetes and its complications,gastric cancer,bone,and joint degenerative ***,the major active compound of EH,has been used as a quality *** no obvious toxicity of EH has been *** to its traditional applications,ethnopharmacology,phytochemistry,pharmacology,and toxicity,EH was applied as a valuable herb for clinical application in food and medicine *** several compounds have been shown to possess diverse biological activities,the underlying mechanisms of their actions remain *** fully exploi

关键词： Erigeron breviscapus traditional applications ethnopharmacology phytochemistry pharmacology