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

proteogenomic review of the changes in primate apoC-I during evolution

引用

Frontiers in Biology 2013年第5期8卷 533-548页

作者： Donald L. pUppIONE julian p. WHITELEGGE The Molecular Biology Institute University of California Los Angeles CA 90095 USA The pasarow Mass Spectrometry Laboratory The Jane & Terry Semel Institute for Neuroscience and Human Behavior David Geffen School of Medicine University of California Los Angeles CA 90095 USA

Apolipoprotein C-I has evolved more rapidly than any of the other soluble apolipoproteins. During the course of primate evolution, the gene for this apolipoprotein was duplicated. prompted by our observation that the two resulting genes encode two distinct forms of apoC-I in great apes, we have reviewed both the genomic and proteomic data to examine what changes have occurred during the course of primate evolution. We have found data showing that one of the duplicated genes, known to be a pseudogene in humans, was also a pseudogene in Denisovans and Neandertals. Using genomic and proteomic data for primates, we will provide in this review evidence that the duplication took place after the divergence of New World monkeys from the human lineage and that the formation of the pseudogene took place after the divergence of the bonobos and chimpanzees from the human lineage.

关键词： mass spectrometry apoC-IA apoC-IB apes Old World monkeys New World monkeys

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

Exploring the Dynamic X-ray Universe:Scientific Opportunities for the Einstein probe Mission

引用

空间科学学报 2016年第2期36卷 117-138页

作者： YUAN Weimin OSBORNE julian p ZHANG Chen WILLINGALE Richard Key Laboratory for Space Astronomy and Technology National Astronomical ObservatoriesChinese Academy of Sciences School of Astronomy and Space Science University of Chinese Academy of Sciences Department of physics and Astronomy University of Leicester University

Time-domain astrophysics will enter a golden era towards the end of this decade with the advent of major facilities across the electromagnetic spectrum and in the multi-messenger realms of gravitational wave and *** the soft X-ray regime,the novel micro-pore lobster-eye optics provides a promising technology to realise,for the first time,focusing X-ray optics for wide-angle monitors to achieve a good combination of sensitivity and wide field of *** this context Einstein probe,a soft X-ray all-sky monitor mission,was proposed and selected as a candidate mission of priority in the space science programme of the Chinese Academy of *** paper reviews the most important science developments and key questions in this field towards 2020 and beyond,and how to achieve them *** also introduces the Einstein probe mission,including its key science goals and mission definition,as well as some of the key technological issues.

关键词： Time-domain astronomy High-energy astrophysics X-rays Transients Instruments

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

An unsupervised pattern recognition methodology based on factor analysis and a genetic-DBSCAN algorithm to infer operational conditions from strain measurements in structural applications

引用

Chinese Journal of Aeronautics 2021年第2期34卷 165-181页

作者： Juan Carlos pERAFAN-LOpEZ julian SIERRA-pEREZ Grupo de Investigacion en Ingenieria Aeroespacial Universidad Pontificia BolivarianaCircular 170-01Medellin 050031Colombia

Structural Health Monitoring(SHM) suggests the use of machine learning algorithms with the aim of understanding specific behaviors in a structural system. This work introduces a pattern recognition methodology for operational condition clustering in a structure sample using the well known Density Based Spatial Clustering of Applications with Noise(DBSCAN) *** methodology was validated using a data set from an experiment with 32 Fiber Bragg Gratings bonded to an aluminum beam placed in cantilever and submitted to cyclic bending loads under 13 different operational conditions(pitch angles). Further, the computational cost and precision of the machine learning pipeline called FA + GA-DBSCAN(which employs a combination of machine learning techniques including factor analysis for dimensionality reduction and a genetic algorithm for the automatic selection of initial parameters of DBSCAN) was measured. The obtained results have shown a good performance, detecting 12 of 13 operational conditions, with an overall precision over 90%.

关键词： Clustering DBSCAN Factor analysis FBGs pattern recognition Strain field

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

Neuroprotective and neuroregenerative potential of pharmacologically-induced hypothermia with D-alanine D-leucine enkephalin in brain injury

引用

Neural Regeneration Research 2018年第12期13卷 2029-2037页

作者： M.Grant Liska Marci G.Crowley julian p.Tuazon Cesar V.Borlongan Center of Excellence for Aging and Brain Repair University of South Florida College of Medicine

Neurovascular disorders, such as traumatic brain injury and stroke, persist as leading causes of death and disability - thus, the search for novel therapeutic approaches for these disorders continues. Many hurdles have hindered the translation of effective therapies for traumatic brain injury and stroke primarily because of the inherent complexity of neuropathologies and an inability of current treatment approaches to adapt to the unique cell death pathways that accompany the disorder symptoms. Indeed, developing potent treatments for brain injury that incorporate dynamic and multiple disorder-engaging therapeutic targets are likely to produce more effective outcomes than traditional drugs. The therapeutic use of hypothermia presents a promising option which may fit these criteria. While regulated temperature reduction has displayed great promise in preclinical studies of brain injury, clinical trials have been far less consistent and associated with adverse effects, especially when hypothermia is pursued via systemic cooling. Accordingly, devising better methods of inducing hypothermia may facilitate the entry of this treatment modality into the clinic. The use of the delta opioid peptide D-alanine D-leucine enkephalin（DADLE） to pharmacologically induce temperature reduction may offer a potent alternative, as DADLE displays both the ability to cause temperature reduction and to confer a broad profile of other neuroprotective and neuroregenerative processes. This review explores the prospect of DADLE-mediated hypothermia to treat neurovascular brain injuries, emphasizing the translational steps necessary for its clinical translation.

关键词： stroke traumatic brian injury neurodegeneration temperature management regenerative medicine delta opioids metabolic suppression cerebrovascular disease neurovascular disease

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

Utilization of pH-driven methods to fortify nanoemulsions with multiple polyphenols

引用

Food Science and Human Wellness 2024年第4期13卷 1943-1950页

作者： Hualu Zhou Bingjing Zheng David julian McClements Department of Food Science and Technology College of Agricultural and Environmental SciencesUniversity of GeorgiaGriffinGA 30223USA Biopolymers and Colloids Laboratory Department of Food ScienceUniversity of MassachusettsAmherstMA 01003USA Department of Food Science&Bioengineering Zhejiang Gongshang UniversityHangzhou 310018China

Simple but effective methods are required to incorporate multiple bioactive polyphenols into delivery systems to increase their dispersibility,stability and *** developed and tested three p Hdriven protocols for creating nanoemulsions loaded with multiple lipophilic *** protocols differed in how the different polyphenols were incorporated into the *** impact of these three methods on the formation,properties,and gastrointestinal fate of nanoemulsions loaded with curcumin,resveratrol,and quercetin was *** three methods produced nanoemulsions with similar initial particle properties:droplet diameters(0.15,0.16,and 0.15μm)and zeta-potentials(–59,–58,and–58 m V),***,the average encapsulation efficiencies(82%,88%,and 61%),gastrointestinal stabilities(83%,97%,and 29%)and bioaccessibilities(77%,90%,and 73%)for curcumin,resveratrol,and quercetin were somewhat *** particular,more quercetin degradation occurred using the approach that held it under alkaline conditions for extended *** general,the p H-driven method provides researchers with a versatile approach of incorporating multiple polyphenols with different characteristics into functional food and beverages using a simple and inexpensive method.

关键词： polyphenols pH-Driven encapsulation Nanoemulsions Gastrointestinal fate Functional foods

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

φ-meson photoproduction off the protons by using linearly polarized photons in the mid- to higher-t regimes at threshold energies

引用

Chinese physics C 2009年第12期33卷 1349-1353页

作者： julian Salamanca philip L. Cole Idaho State University Department of Physics Pocatello ID 83209-8106 USA Thomas Jefferson National Laboratory. Newport News VA 23606 USA

Observables from vector meson photoproduction by linearly-polarized photons can be expressed in term of bilinear combinations of helicity amplitudes parameterized by the Spin Density Matrix Elements （SDMEs）. These SDMEs give straightforward relations for understanding the nature of the parity exchange at threshold energies, as well as for extracting signatures of the Okubo-Zweig-Iizuka violation. This paper will show preliminary measurements of SDMEs for γp →φp in the photon energy range of 1.7 to 1.9 GeV （momentum transfer squared t range of -1.2 to -0.25 GeV2） and 1.9 to 2.1 CeV （t range of -1.4 to -0.25 GeV2） from the g8b experimental data collected in the summer of 2005 in the Hall B of Jefferson Lab.

关键词： photoproduction of Ф-mesons linearly-polarized photons polarization observables

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

Nicotinamide mononucleotide:a potential effective natural compound against insulin resistance

引用

Signal Transduction and Targeted Therapy 2021年第9期6卷 2609-2610页

作者： julian Roos Julia Zinngrebe pamela Fischer-posovszky Department of pediatrics and Adolescent Medicine Ulm University Medical CenterUlmGermany

Recently,a study published in Science by Yoshino et al.1 reported on a randomized,placebo-controlled,double-blind clinical trial to examine the effects of a 10-week nicotinamide mononucleotide(NMN)administration on human metabolism in 25 postmenopausal overweight or obese women with *** revealed positive effects of NMN on insulin sensitivity,insulin signalling,and tissue remodelling in skeletal muscle.

关键词： metabolism clinical

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

Hierarchical Mean-Field Type Control of price Dynamics for Electricity in Smart Grid

引用

Journal of Systems Science & Complexity 2022年第1期35卷 1-17页

作者： FRIHI Zahrate El Oula CHOUTRI Salah Eddine BARREIRO-GOMEZ julian TEMBINE Hamidou Laboratory of probability and Statistics(La pS) Department of MathematicsBadji-Mokhtar UniversityB.P.12Annaba 23000Algeria. NYUAD Research Institute New York University Abu DhabiUAE Learning&Game Theory Laboratory New York University Abu DhabiSaadiyat Campus PO Box 129188UAE

This paper solves a mean-field type hierarchical optimal control problem in electricity *** authors consider n-1 prosumers and one *** ith prosumer,for 1prosumer and is a follower of the(i+1)th *** first player(agent)is the follower at the bottom whereas the nth is the leader at the *** problem is described by a linear jump-diffusion system of conditional mean-field type,where the conditioning is with respect to common noise,and a quadratic cost functional involving,the square of the conditional expectation of the controls of the *** authors provide a semi-explicit solution of the corresponding meanfield-type hierarchical control problem with common ***,the authors illustrate the obtained result via a numerical example with two different scenarios.

关键词： Electricity price dynamics hierarchical control mean-field-type control smart grids

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

Surface passivation and boundary lubrication of self-mated tetrahedral amorphous carbon asperities under extreme tribological conditions

引用

Friction 2014年第2期2卷 193-208页

作者： pedro A.ROMERO Lars pASTEWKA julian VON LAUTZ Michael MOSELER Fraunhofer Institute for Mechanics of Materials IWM Wöhlerstraße 1179108 FreiburgGermany Karlsruhe Institute of Technology IAM-ZBSKaiserstraße 1276131KarlsruheGermany Freiburg Materials Research Center Stefan-Meier-Straße 2179104FreiburgGermany University of Freiburg Physics DepartmentHermann-Herder-Straße 379104 FreiburgGermany

Tetrahedral amorphous carbon coatings have the potential to significantly reduce friction and wear between sliding ***,we provide atomistic insights into the evolution of the sliding interface between naked and hydrogen-passivated ta-C sliding partners under dry and lubricated *** reactive classical atomistic simulations we show that sliding induces a sp3 to sp2 rehybridization and that the shear resistance is reduced by hydrogen-passivation and hexadecane-lubrication-despite our finding that nanoscale hexadecane layers are not always able to separate and protect ta-C counter surfaces during *** asperities deform,carbon atoms within the hexadecane lubricant bind to the ta-C sliding partners resulting in degradation of the hexadecane molecules and in increased material intermixing at the sliding *** atoms from the passivation layer and from the hexadecane chains continue to be mixed within a sp2 rich sliding interface eventually generating a tribo-layer that resembles an a-C:H type of *** separation of the sliding partners,the tribo-couple splits within the newly formed sp2 rich a-C:H mixed layer with significant material transfer across the sliding *** leaves behind a-C:H coated ta-C surfaces with dangling C bonds,linear C chains and hydrocarbon fragments.

关键词： Atomic-scale simulations DLC lubrication hexadecane passivation sliding mixed layer wear

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

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

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：