检索结果-南通市图书馆

Predictive modelling of ferroelectric tunnel junctions

npj Computational Materials 2016年第1期2卷 150-162页

作者： julian P Velev John D Burton Mikhail Ye Zhuravlev Evgeny Y Tsymbal Department of Physics and Astronomy University of NebraskaLincolnNEUSA Department of Physics and Astronomy University of Puerto RicoSan JuanPuerto RicoUSA Nebraska Center for Materials and Nanoscience University of NebraskaLincolnNEUSA Kurnakov Institute for General and Inorganic Chemistry Russian Academy of SciencesMoscowRussia Faculty of Liberal Arts and Sciences St Petersburg State UniversitySt PetersburgRussia

Ferroelectric tunnel junctions combine the phenomena of quantum-mechanical tunnelling and switchable spontaneous polarisation of a nanometre-thick ferroelectric film into novel device *** the ferroelectric barrier polarisation direction produces a sizable change in resistance of the junction—a phenomenon known as the tunnelling electroresistance *** a fundamental perspective,ferroelectric tunnel junctions and their version with ferromagnetic electrodes,i.e.,multiferroic tunnel junctions,are testbeds for studying the underlying mechanisms of tunnelling electroresistance as well as the interplay between electric and magnetic degrees of freedom and their effect on *** a practical perspective,ferroelectric tunnel junctions hold promise for disruptive device *** a very short time,they have traversed the path from basic model predictions to prototypes for novel non-volatile ferroelectric random access memories with non-destructive *** remarkable progress is to a large extent driven by a productive cycle of predictive modelling and innovative experimental *** this review article,we outline the development of the ferroelectric tunnel junction concept and the role of theoretical modelling in guiding experimental *** discuss a wide range of physical phenomena that control the functional properties of ferroelectric tunnel junctions and summarise the state-of-the-art achievements in the field.

关键词： ferroelectric tunnel resistance

来源：

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

Seroconversion of HBsAG coincides with hepatitis A superinfection: A case report

引用

World Journal of Clinical Cases 2020年第9期8卷 1651-1655页

作者： Claudia Beisel Marylyn M Addo julian Schulze zur Wiesch Department of Internal Medicine Division of Infectious DiseaseUniversity Medical Center Hamburg-EppendorfHamburg 20251Germany German Center for Infection Research Hamburg 20251Germany

BACKGROUND Hepatitis B virus(HBV)is a hepatotropic virus that can cause acute and chronic liver *** to the world health organization 257 million people are infected with chronic HBV infection ***-infection with other hepadnaviruses,including hepatitis A virus(HAV),hepatitis C virus,hepatitis D virus,and hepatitis E virus is associated with increased risk of acute liver failure in patients with chronic *** SUMMARY Here,we report a case of a 47-year old male patient with HBV-related compensated Child A cirrhosis,who presented with general fatigue,malaise and laboratory signs of acute *** the patient was regularly seen at a specialized university liver unit,the HAV vaccination status was *** HAV super-infection was diagnosed by positive serological and polymerase chain reaction *** acute HAV super-infection,spontaneous HBsAg elimination and development of an anti-HBs titer were *** This case illustrates the importance of carefully checking the vaccination *** our patient,unspecific immunological responses to HAV led to functional cure of HBV.

关键词： Chronic hepatitis B infection Liver cirrhosis Acute hepatitis A infection HBsAg clearance Functional cure Case report

来源：

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

作者： julian Guthrie.

学校读者我要写书评

暂无评论

Deforming generalized cylinders without self-intersection by means of a parametric center curve

引用

Computational Visual Media 2018年第4期4卷 305-321页

作者： Ruibin Ma Qingyu Zhao Rui Wang James Damon julian Rosenman Stephen Pizer Computer Science University of North Carolina at Chapel Hill Mathematics University of North Carolina at Chapel Hill Radiation Oncology University of North Carolina at Chapel Hill

Large-scale deformations of a tubular object, or generalized cylinder, are often defined by a target shape for its center curve, typically using a parametric target curve. This task is non-trivial for free-form deformations or direct manipulation methods because it is hard to manually control the centerline by adjusting control points. Most skeleton-based methods are no better, again due to the small number of manually adjusted control points. In this paper, we propose a method to deform a generalized cylinder based on its skeleton composed of a centerline and orthogonal cross sections. Although we are not the first to use such a skeleton, we propose a novel skeletonization method that tries to minimize the number of intersections between neighboring cross sections by means of a relative curvature condition to detect intersections. The mesh deformation is first defined geometrically by deforming the centerline and mapping the cross sections. Rotation minimizing frames are used during mapping to control twisting. Secondly, given displacements on the cross sections, the deformation is decomposed into finely subdivided regions. We limit distortion at these vertices by minimizing an elastic thin shell bending energy,in linear time. Our method can handle complicated generalized cylinders such as the human colon.

关键词： generalized cylinder deformation skeleton self-intersection

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Prevalence and Factors Associated with Concomitant Chinese Medicine Use by Rheumatoid Arthritis Patients in A Multi-Ethnic Asian Population

引用

Chinese Journal of Integrative Medicine 2022年第3期28卷 223-228页

作者： HUANG You-yi XIN Xiao-hui Rehena Sultana julian Thumboo FONG Kok Yong Duke-NUS Medical School Singapore Department of Rheumatology and Immunology Singapore General HospitalSingapore Medicine Academic Clinical Program Division of MedicineSingapore General HospitalSingapore Centre for Quantitative Medicine Duke-NUS Medical SchoolSingapore

Objective:To determine the prevalence,factors associated with and patterns of concomitant Chinese medicine(CM)with Western treatment use among patients with rheumatoid arthritis(RA)in a tertiary referral centre(Singapore General Hospital)in ***:We conducted a cross-sectional intervieweradministered survey of a consecutive sample of patients with RA in Singapore General Hospital centre regarding their CM use including data on patient demographics,disease characteristics,concomitant use of CM and reasons,concerns and disclosure patterns from March to August *** and multivariate logistic regression analyses were performed to determine the associations of CM ***:Prevalence of CM use among the 258 patients surveyed(male:female 42:216;Chinese:Malay:Indian 191:29:34;mean age:61 years;mean duration of RA:10 years)was 46.1%(119/258).On muutivariate analysis,Chinese ethnicity(OR,95%CI:4.11,1.49-11.36),Chinese speakers(OR,95%CI:2.35,1.03-5.54),middle-income group(OR,95%CI:2.53,1.01-6.31)and greater learned helplessness(OR,95%CI:1.13,1.04-1.22)were significantly associated with CM *** CM users disclosed their CM use to CM physicians(87.3%,96/110),sought advice from them on treatment interactions(59.4%,57/96)and how best to combine treatments(49.0%,47/96)than did so with rheumatologists(42.0%,50/119;40.0%,20/50;and 42.0%,21/50,respectively).Forty-two percentage(29/69)of patients who concealed CM use from rheumatologists because their rheumatologists did not specifically enquire about CM ***:Concomitant CM use among patients with RA treated in a tertiary referral centre in Singapore is high but voluntary disclosure is *** associations identified can help doctors identify and enquire about CM use,minimizing potential adverse interactions.

关键词： pevalence rheumatoid arthritis Chinese medicine complementary therapies

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Long-term overlap of social and genetic structure in free-ranging house mice reveals dynamic seasonal and group size effects

引用

Current Zoology 2021年第1期67卷 59-69页

作者： julian C.EVANS Anna K.LINDHOLM Barbara KöNIG Department of Evolutionary Biology and Environmental Studies University of ZurichWinterthurerstrasse 190Zurich8057Switzerland

Associating with relatives in social groups can bring benefits such as reduced risk of aggression and increased likelihood of *** among relatives over limited resources,on the other hand,can induce individuals to alter their patterns of *** density might further affect the costs and benefits of associating with relatives by altering resource competition or by changing the structure of social groups;preventing easy association with ***,the overlap between genetic and social structure is expected to decrease with increasing population size,as well as during times of increased breeding ***,we use multi-layer network techniques to quantify the similarity between long-term,high resolution genetic,and behavioral data from a large population of free-ranging house mice(Mus musculus domesticus),studied over *** infer how the benefit of associating with genetically similar individuals might fluctuate in relation to breeding behavior and environmental *** found a clear seasonal effect,with decreased overlap between social and genetic structure during summer months,characterized by high temperatures and high breeding *** the effect of overall population size was relatively weak,we found a clear decrease in the overlap between genetic similarity and social associations within larger *** well as longer-term within-group changes,these results reveal population-wide short-term shifts in how individuals associate with *** study suggests that resource competition modifies the trade-off between the costs and benefits of interacting with relatives.

关键词： genetic relatedness long-term data multilayer networks seasonal social behavior

来源：

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

Multiple forest structural elements are needed to promote beetle biomass, diversity and abundance

引用

Forest Ecosystems 2022年第5期9卷 585-595页

作者： Nolan J.Rappa Michael Staab julian Frey Nathalie Winiger Alexandra-Maria Klein Nature Conservation and Landscape Ecology University of FreiburgTennenbacherstrasse 479106Freiburg im BreisgauGermany Ecological Networks Technical University DarmstadtSchnittspahnstrasse 364287DarmstadtGermany Forest Growth and Dendroecology University of FreiburgTennenbacherstrasse 479106Freiburg im BreisgauGermany Wildlife Ecology and Management University of FreiburgTennenbacherstrasse 479106Freiburg im BreisgauGermany

Background:Retention forestry is a management strategy aiming to mitigate biodiversity loss by retaining structural elements such as dead trees that would otherwise be *** we analyze the biomass,diversity and abundance among forest beetles collected using window traps on 1281-ha forest sites reflecting gradients in the amount of structural elements in southwestern ***:We found that beetle biomass increased with mean diameter at breast height(a measure of tree size),and decreased with stand structural *** of individual feeding guilds responded differently to forest structural elements,namely lying deadwood,understory complexity,tree basal area and stand structural *** family diversity increased with the effective number of layers,i.e.1-m forest strata occupied by vegetation assessed via terrestrial laser *** of feeding guilds responded to only elevation and share of deciduous *** composition in terms of biomass was structured by forest elements similar to biomass of individual feeding guilds,with the addition of lying *** differed from community composition in terms of abundance of feeding guilds,which was structured by primarily standing deadwood volume and share of deciduous ***:Our results show that biomass,diversity and abundance respond differently to forest structural *** suggests that the concurrent prioritization of multiple forest elements is needed to promote forest beetles,with more focus placed on the differing resource needs among feeding *** addition,retention strategies should also consider the varying responses of beetle biodiversity metrics when assessing the importance of forest structural elements.

关键词： Allometry Biodiversity Coleoptera Forest management Terrestrial laser scanning Window trap

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

[Y(dbm)_(3)(H_(2)O)]:Synthesis,thermal behavior and spin-coating precursor for Y_(2)O_(3)layer formation

引用

Journal of Rare Earths 2017年第12期35卷 1248-1254页

作者： Elaheh Pousaneh Andrea Preuβ Khaybar Assim julian Noll Alexander Jakob Tobias Rüffer Heinrich Lang Technische Universitat Chemnitz Faculty of Natural SciencesInstitute of ChemistryInorganic Chemistry

The synthesis,structure and thermal behavior of [Y（dbm）3（H2 O）]（3）（dbm = 1,3-diphenyl-1,3-propandionate） and its use as a spin-coating precursor for Y2 O3 deposition is reported. Complex 3 was prepared by the reaction of [Y（NO3）3·6 H2 O]（1） with 3 equiv of Hdbm（2） in presence of NaOH. The molecular structure of 3 in the solid-state was determined by single X-ray crystal diffraction. Both C1 symmetric crystallographically independent species of 3 possess a YO7 coordination setup with minor deviation from an ideal capped octahedron coordination geometry（∧ enantiomer）. Complex 3 forms a1 D chain, due to intermolecular hydrogen bonds between the coordinated H2 O molecule and the 0 atom of the dbm ligand, respectively. The thermal decomposition behavior of 3 was investigated by thermogravimetric studies in the temperature range of 40-800 ℃ and 40-1300 ℃ under an oxygen and argon atmosphere, respectively. Powder X-ray diffraction（PXRD） measurements of the residues confirmed the formation of Y2 O3. Complex 3 was applied as a spin-coating precursor for yttrium oxide film formation on either Si wafers with a continuous 100 nm thick SiO2 film, or with a native oxide *** as-deposited Y2 O3 layers are smooth, conformal, dense and transparent and are of a thickness of 27 and 30 nm, respectively.

关键词： Yttrium β-Diketonate Yttrium oxide Spin-coating Solid-state structure Vapor pressure

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Network Intrusion Detection in Internet of Blended Environment Using Ensemble of Heterogeneous Autoencoders(E-HAE)

引用

Computer Systems Science & Engineering 2023年第9期46卷 3261-3284页

作者： Lelisa Adeba Jilcha Deuk-Hun Kim julian Jang-Jaccard Jin Kwak ISAA Lab. Department of AI Convergence NetworkAjou UniversitySuwon16499Korea ISAA Lab. Institute for Information and CommunicationAjou UniversitySuwon16499Korea Department of Computer Science and Information Technology Massey UniversityAuckland0745New Zealand Department of Cyber Security Ajou UniversitySuwon16499Korea

Contemporary attackers,mainly motivated by financial gain,consistently devise sophisticated penetration techniques to access important information or *** growing use of Internet of Things(IoT)technology in the contemporary convergence environment to connect to corporate networks and cloud-based applications only worsens this situation,as it facilitates multiple new attack vectors to emerge *** such,existing intrusion detection systems suffer from performance degradation mainly because of insufficient considerations and poorly modeled detection *** address this problem,we designed a blended threat detection approach,considering the possible impact and dimensionality of new attack surfaces due to the aforementioned *** collectively refer to the convergence of different technology sectors as the internet of blended *** proposed approach encompasses an ensemble of heterogeneous probabilistic autoencoders that leverage the corresponding advantages of a convolutional variational autoencoder and long short-term memory variational *** extensive experimental analysis conducted on the TON_IoT dataset demonstrated 96.02%detection ***,performance of the proposed approach was compared with various single model(autoencoder)-based network intrusion detection approaches:autoencoder,variational autoencoder,convolutional variational autoencoder,and long short-term memory variational *** proposed model outperformed all compared models,demonstrating F1-score improvements of 4.99%,2.25%,1.92%,and 3.69%,respectively.

关键词： Network intrusion detection anomaly detection TON_IoT dataset smart grid smart city smart factory digital healthcare autoencoder variational autoencoder LSTM convolutional variational autoencoder ensemble learning

来源：

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

Classification, Expression Pattern, and E3 Ligase Activity Assay of Rice U-Box-Containing Proteins

引用

Molecular Plant 2008年第5期1卷 800-815页

作者： Li-Rong Zenga Chan Ho Park R.C. Venu julian Gough Guo-Liang Wang Department of Plant Pathology Plant Molecular Biology and Biotechnology Program The Ohio State University 2021 Coffey Rd 201 Kottman Hall Columbus OH 43210 USA Present address: Boyce Thompson Institute for Plant Research Tower Rd Ithaca NY 14853 USA Department of Computer Science University of Bristol Woodland Rd Bristol BS8 1UB UK Crop Gene Engineering Key Laboratory of Hunan Province Hunan Agricultural University Changsha Hunan 410128 China

Ubiquitin ligases play a central role in determining the specificity of the ubiquitination system by selecting a myriad of appropriate candidate proteins for modification. The U-box is a recently identified, ubiquitin ligase activityrelated protein domain that shows greater presence in plants than in other organisms. In this study, we identified 77 putative U-box proteins from the rice genome using a battery of whole genome analysis algorithms. Most of the U-box protein genes are expressed, as supported by the identification of their corresponding expressed sequence tags （ESTs）, full-length cDNAs, or massively parallel signature sequencing （MPSS） tags. Using the same algorithms, we identified 61 U-box proteins from the Arabidopsis genome. The rice and Arabidopsis U-box proteins were classified into nine major classes based on their domain compositions. Comparison between rice and Arabidopsis U-box proteins indicates that the majority of rice and Arabidopsis U-box proteins have the same domain organizations. The inferred phylogeny established the homology between rice and Arabidopsis U-box/ARM proteins. Cell death assay using the rice protoplast system suggests that one rice U-box gene, OsPUB51, might act as a negative regulator of cell death signaling. In addition, the selected U-box proteins were found to be functional E3 ubiquitin ligases. The identification and analysis of rice U-box proteins hereby at the genomic level will help functionally characterize this class of E3 ubiquitin ligase in the future.

关键词： ESTs MPSS U-Box-Containing

来源：

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

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：