检索结果-南通市图书馆

Science China(Information Sciences) 2024年第11期67卷 367-368页

作者： Lu dong Tao han Xin YUAN Chao DENG School of Cyber Science and Engineering Southeast University Engineering Research Center of Blockchain Application Supervision and ManagementSoutheast University Ministry of Education School of Automation Southeast University Institute of Advanced Technology Nanjing University of Posts and Telecommunications

Advanced persistent threat(APT) is a powerful attack pattern in which attackers lurk in the system, waiting for opportune moments and launching attacks. Remote state estimation(RSE) is an essential scenario in the cyber-physical system(CPS). The attacker's objective is to take advantage of the vulnerability in the RSE system, expanding the estimation error of the remote estimator(RE). However, the lurking demand compels the attacker to consider harvesting energy from an external quality-changing environment,which also restricts the attacker. It is of great military interest to manage attack energy in an unreliable environment and with limited resources.

关键词：

同方期刊数据库

Eurasian otters prefer to prey on religious released nonnative fish on the Qinghai-Tibetan Plateau

在线全文

学校读者我要写书评

暂无评论

Current Zoology 2024年第4期70卷 472-479页

作者： Qiaoyun Wang Xuesong han Zichen Wang Kaidan Zheng Zhengyi dong Peng Zhang Pengfei Fan Lu Zhang School of Life Sciences Sun Yat-Sen UniversityGuangzhou 510275China State Key Laboratory of Biocontrol School of Life SciencesSun Yat-sen UniversityGuangzhou 510275China School of Life Sciences Peking UniversityBeijing 100871China Shan Shui Conservation Center Beijing100871China School of Ecology Sun Yat-sen UniversityShenzhenGuangdong 518107China

Religious wildlife release is prevalent worldwide,especially in Asia *** is one of the anthropogenic pathways to cause biological *** fish release is common on the Qinghai-Tibetan Plateau,yet few studies have assessed the influences of religious fish release on local ***,a city on the Qinghai-Tibetan Plateau,we interviewedlocal people,conducted fish trap surveys in local rivers,and exam-ined the diet of Eurasian otters Lutra lutra using a fecal DNA metabarcoding *** found that fish release started at least in 1980-1990s in *** residents released fish in large amounts and released fish were usually exotic commercial fish purchased from *** such long-term and intensive fish release activities,released fish were few in local *** the other hand,Eurasian otters mainly prey on fish and released fish accounted for~20%of relative read abundance of prey DNA in otters'diet,indicating their high preference on released *** study suggested that religious fish release may provide additional food resources for otters,whereas otters,as a top predator in local rivers,may deplete non-native fish once they were released and,therefore,reduce the probability of colonization of released fish,although further studies are required to assess otters'*** study revealed otters'diet in Yushu,providing basic information for local otter management and ***,it represents a case showing that native predators prey on religious released animals,implying a probable direction forcontrolling invasive species through nativepredator conservation.

关键词： biological invasion Buddhism Eurasian otter prey composition religious wildlife release scat DNA.

Monotonic mechanical behaviour of compacted completely decomposed granite with various inclusion levels of incineration bottom ash

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 Zhejiang University-Science A(Applied Physics & Engineering) 2024年第8期25卷 670-679页

作者： han-Lin WANG Cheng-Shuang YIN Qian-Yi ZhanG Qi-Wei LIU Zhen-Yu YIN dong-Xing XUAN Askar KHASANOV Research Center for Advanced Underground Space Technologies of Hunan University Changsha 410082China Key Laboratory of Building Safety and Energy Efficiency of the Ministry of Education Hunan UniversityChangsha 410082China College of Civil Engineering Hunan UniversityChangsha 410082China School of Civil Engineering Zhengzhou UniversityZhengzhou 450001China Department of Civil and Environmental Engineering The Hong Kong Polytechnic UniversityHung HomKowloonHong KongChina Department of Applied and Theoretical Mechanics Samarkand State UniversitySamarkandUzbekistan

1 Introduction Completely decomposed granite(CDG)is widely distributed in South China(Xu et al.,2022;Wang et al.,2023).The parent granite rock mass gradually loses features during the weathering process,and thus needs to be reinforced when used(Lan et al.,2003;Dassekpo et al.,2017;Alamanis et al.,2021).On the other hand,considering the huge demand for construction materials and limited natural resources,it is increasingly important to fully utilize solid waste(Gruhler et al.,2019;Anagnostopoulos et al.,2020;Jiang et al.,2022,2023a,2023b).With high strength and environment-friendly characteristics,incineration bottom ash(IBA)seems to be a suitable reinforcement material for CDG(Ahmed and Khalid,2011;Alhassan and Tankó,2012;Toraldo et al.,2013;Lynn et al.,2017;Xuan et al.,2018;Tang et al.,2020).

关键词： incineration behaviour utilize

The cytosolic isoform of triosephosphate isomerase,ZmTPI4,is required for kernel development and starch synthesis in maize(Zea mays L.)

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

The Crop Journal 2024年第2期12卷 401-410页

作者： Wenyu Li han Wang Qiuyue Xu Long Zhang Yan Wang Yongbiao Yu Xiangkun Guo Zhiwei Zhang Yongbin dong Yuling Li State Key Laboratory of Wheat and Maize Crop Science Collaborative Innovation Center of Henan Grain CropsCollege of AgronomyHenan Agricultural UniversityLongzi Lake CampusZhengzhou 450046HenanChina

Triosephosphate isomerase(TPI)is an enzyme that functions in plant energy production,accumulation,and *** understand its function in maize,we characterized a maize TPI mutant,*** comparison to the wild type,zmtpi4 mutants showed altered ear development,reduced kernel weight and starch content,modified starch granule morphology,and altered amylose and amylopectin ***,ATP,and pyruvate contents were reduced,indicating ZmTPI4 was involved in *** subcellular localization confirmed ZmTPI4 as a cytosolic rather than a plastid isoform of TPI,the zmtpi4 mutant showed reduced leaf size and chlorophyll *** of ZmTPI4 in Arabidopsis led to enlarged leaves and increased seed weight,suggesting a positive regulatory role of ZmTPI4 in kernel weight and starch *** conclude that ZmTPI4 functions in maize kernel development,starch synthesis,glycolysis,and photosynthesis.

关键词： Maize Kernel Starch Weight Photosynthesis

维普期刊数据库

Solid-state non-volatile memories based on vdW heterostructure-based vertical-transport ferroelectric field-effect transistors

在线全文

学校读者我要写书评

暂无评论

Science China(Information Sciences) 2024年第6期67卷 198-206页

作者： Qiyu YANG Zheng-dong LUO Fei XIAO Junpeng ZhanG Dawei ZhanG dongxin TAN Xuetao GAN Yan LIU Zhufei CHU Yinshui XIA Genquan han hangzhou Institute of Technology Xidian University State Key Discipline Laboratory of Wide Band Gap Semiconductor Technology School of MicroelectronicsXidian University School of Artificial Intelligence Xidian University School of Materials Science and Engineering University of New South Wales (UNSW) Sydney ARC Centre of Excellence in Future Low-Energy Electronics Technologies (FLEET) University of New South Wales (UNSW) Sydney Key Laboratory of Light Field Manipulation and Information Acquisition Ministry of Industry and Information Technologyand Shaanxi Key Laboratory of Optical Information TechnologySchool of Physical Science and TechnologyNorthwestern Polytechnical University Faculty of Electrical Engineering and Computer Science Ningbo University

Driven by the explosive development of data-centric computation applications, it is becoming urgent to develop in-memory computing devices that are beyond the von Neumann architecture with an arrangement of separated logic and memory components. The transistor-type solid-state non-volatile memories,such as ferroelectric field-effect transistors(Fe FETs), have long been regarded as a competitive candidate for future in-memory computing architectures. However, the density scaling towards high-density arrays would require advanced Fe FETs with reduced footprints, which remains a great challenge so far. Here, a vertical-transport(VT) Fe FET that flips the charge transport channel perpendicular to the substrate plane is proposed, in which a ferroelectric gate and a van der Waals(vd W) heterojunction channel are vertically integrated, effectively reducing the device footprints. The proposed VT-Fe FET shows not only the robust binary non-volatile memory states but also several key synaptic functionalities at the device level. An artificial neural network with supervised learning was simulated based on the device conductance switching properties,showing excellent classification accuracy for the MNIST handwritten digits. These findings suggest that the proposed VT-Fe FET could offer a new solution for future non-volatile memories as well as more advanced neuromorphic systems.

关键词： vdW heterostructure non-volatile memory vertical-transport transistor ferroelectric field-effect transistor memristive devices

Mechanical behaviours of bedded sandstone under hydromechanical coupling

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Journal of Rock Mechanics and Geotechnical Engineering 2024年第4期16卷 1245-1261页

作者： Junwen Zhang Zhixiang Song Lichao Zhang Shaokang Wu Shanyong Wang Yang Zhang Xukai dong Jinxin Wang Yanbo han Baohua Kan School of Energy and Mining Engineering China University of Mining and Technology (Beijing)Beijing100083China Jarud Banner Zhahanao'er Coal Industry Co. Ltd.ZhaluteqiInner Mongolia029200China Priority Research Centre for Geotechnical Science & Engineering The University of NewcastleCallaghanNSW 2308Australia

The combination of the dipping effect and hydromechanical(H-M)coupling effect can easily lead to water inrush disasters in water-rich roadways with different dip angles in coal ***,H-M coupling tests of bedded sandstones under identical osmotic pressure and various confining pressures were ***,the evolution curves of stress-strain,permeability and damage,macro-and mesoscopic failure characteristics were ***,the mechanical behaviour was characterized,and finally the failure mechanism was *** results showed that:(1)The failure of the sandstone with the bedding angle of 45°or 60°was the structure-dominant type,while that with the bedding angle of 0°,30°or 90°was the force-dominant type.(2)When the bedding angle was in the range of(0°,30°)or(45°,90°),the confining pressure played a dominant role in influencing the peak ***,withinβ∈(30°,45°),the bedding effect played a dominant role in the peak strength.(3)With the increase in bedding angle,the cohesion increased first,then decreased and finally increased,while the internal friction angle was the opposite.(4)When the bedding angle was 0°or 30°,the“water wedging”effect and the“bedding buckling”effect would lead to the forking or converging shear *** the bedding angle was 45°or 60°,the sliding friction effect would lead to the shear slipping *** the bedding angle was 90°,the combination of the“bedding buckling”effect and shear effect would lead to the mixed tension-shear *** above conclusions obtained are helpful for the prevention of water inrush disasters in water-rich roadways with different dips in coal mines.

关键词： Hydromechanical coupling Bedded sandstones Mechanical behaviour Bedding effect Failure mechanism

Evidence for reversible oxygen ion movement during electrical pulsing:enabler of emerging ferroelectricity in binary oxides

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Materials Futures 2024年第3期3卷 195-205页

作者： Huan Liu Fei Yu Bing Chen Zheng-dong Luo Jiajia Chen Yong Zhang Ze Feng Hong dong Xiao Yu Yan Liu Genquan han Yue Hao State Key Discipline Laboratory of Wide Band Gap Semiconductor Technology School of MicroelectronicsXidian UniversityXi’an 710071People’s Republic of China Research Center for Intelligent Chips and Devices Zhejiang LabHangzhou 311121People’s Republic of China Engineering Research Center of Thin Film Optoelectronics Technology Ministry of EducationNankai UniversityTianjin 300350People’s Republic of China

Ferroelectric HfO_(2)-based materials and devices show promising potential for applications in information technology but face challenges with inadequate electrostatic control,degraded reliability,and serious variation in effective oxide thickness *** demonstrate a novel interface-type switching strategy to realize ferroelectric characteristics in atomic-scale amorphous binary oxide films,which are formed in oxygen-deficient conditions by atomic layer deposition at low *** approach can avoid the shortcomings of reliability degradation and gate leakage increment in scaling polycrystalline doped HfO_(2)-based *** theoretical modeling and experimental characterization,we show the following.(1)Emerging ferroelectricity exists in ultrathin oxide systems as a result of microscopic ion migration during the switching process.(2)These ferroelectric binary oxide films are governed by an interface-limited switching mechanism,which can be attributed to oxygen vacancy migration and surface defects related to electron(de)trapping.(3)Transistors featuring ultrathin amorphous dielectrics,used for non-volatile memory applications with an operating voltage reduced to±1 V,have also been experimentally *** findings suggest that this strategy is a promising approach to realizing next-generation complementary metal-oxide semiconductors with scalable ferroelectric materials.

关键词： ferroelectric binary oxide mobile ion amorphous dielectric nonvolatile memory

Recent progress in the deactivation mechanism of zeolite catalysts in methanol to olefins

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 Chemistry 2024年

作者： Sheng Fan han Wang Sen Wang Mei dong Weibin Fan State Key Laboratory of Coal Conversion Institute of Coal Chemistry Chinese Academy of Sciences University of Chinese Academy of Sciences

Methanol to olefins(MTO) as an important reaction in C1 chemistry can effectively transform non-petroleum carbon resources into value-added chemicals. Zeolites have been widely used as MTO catalysts. However, they usually suffer from a rapid deactivation due to bulky coke species production, and thus require continuous regenerations in industrial application. The key to design and develop highly stable zeolite catalysts for MTO process is to unravel the deactivation mechanism and clarify the structure–performance relationship of catalysts. Here, in this mini-review, we investigate the critical intermediate species inducing zeolite deactivation and analyze the formation and evolution pathways of polycyclic aromatic hydrocarbons(PAHs)that are the precursors of carbonaceous deposits. In addition, some methods to alleviate the coking mainly including acid regulation, morphology modification and process optimization, are also summarized.

关键词：

Primary coexisting adenocarcinoma of the colon and neuroendocrine tumor of the duodenum: A case report and review of the literature

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

World Journal of Gastrointestinal Surgery 2024年第8期16卷 2724-2734页

作者： Song Fei Wei-dong Wu han-Shuo Zhang Shao-Jie Liu Dan Li Bo Jin Department of Thoracic and Cardiovascular Surgery Guangzhou Red Cross Hospital of Jinan UniversityGuangzhou 510000Guangdong ProvinceChina Department of Gastrointestinal Surgery Guangzhou Red Cross Hospital of Jinan UniversityGuangzhou 510000Guangdong ProvinceChina

BACKGROUND Neuroendocrine tumors(NETs)arise from the body’s diffuse endocrine *** primary adenocarcinoma of the colon and NETs of the duodenum(D-NETs)is a rare occurrence in clinical *** classification and treatment criteria for D-NETs combined with a second primary cancer have not yet been *** SUMMARY We report the details of a case involving female patient with coexisting primary adenocarcinoma of the colon and a D-NET diagnosed by imaging and surgical *** tumors were treated by surgery and four courses of *** patient achieved a favorable clinical *** Coexisting primary adenocarcinoma of the colon and D-NET were diagnosed by imaging,laboratory indicators,and surgical *** resection com-bined with chemotherapy was a safe,clinically effective,and cost-effective treat-ment.

关键词： Neuroendocrine tumor of the duodenum Multiple primary tumors Colorectal cancer Endoscopic resection Case report

Comparative transcriptomic evidence of physiological changes and potential relationships in vertebrates under different dormancy states

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Zoological Research 2024年第2期45卷 341-354页

作者： Yu-han Niu Li-Hong Guan Cheng Wang Hai-Feng Jiang Guo-Gang Li Lian-dong Yang Shun-Ping He State Key Laboratory of Freshwater Ecology and Biotechnology Institute of HydrobiologyChinese Academy of SciencesWuhanHubei 430072China College of Life Sciences Qinghai Normal UniversityXiningQinghai 810008China Academy of Plateau Science and Sustainability Qinghai Normal UniversityXiningQinghai 810016China Key Laboratory of Biodiversity Formation Mechanism and Comprehensive Utilization of the Qinghai-Tibet Plateau in Qinghai Province Qinghai Normal UniversityXiningQinghai 810008China College of Life Sciences and Technology Xinxiang Medical UniversityXinxiangHenan 453003China College of Animal Science and Technology Northwest A&F UniversityYanglingShaanxi 712100China

Dormancy represents a fascinating adaptive strategy for organisms to survive in unforgiving *** a period of dormancy,organisms often exhibit exceptional *** period is typically divided into hibernation and aestivation based on seasonal ***,the mechanisms by which organisms adapt to their environments during dormancy,as well as the potential relationships between different states of dormancy,deserve further ***,we selected Perccottus glenii and Protopterus annectens as the primary subjects to study hibernation and aestivation,*** on histological and transcriptomic analysis of multiple organs,we discovered that dormancy involved a coordinated functional response across *** analyses revealed noteworthy disparities between the two dormant species in their responses to extreme ***,similarities in gene expression patterns pertaining to energy metabolism,neural activity,and biosynthesis were noted during hibernation,suggesting a potential correlation between hibernation and *** further explore the relationship between these two phenomena,we analyzed other dormancy-capable species using data from publicly available *** comparative analysis revealed that most orthologous genes involved in metabolism,cell proliferation,and neural function exhibited consistent expression patterns during dormancy,indicating that the observed similarity between hibernation and aestivation may be attributable to convergent *** conclusion,this study enhances our comprehension of the dormancy phenomenon and offers new insights into the molecular mechanisms underpinning vertebrate dormancy.

关键词： Hibernation Aestivation Multi-organs Convergent evolution

维普期刊数据库