检索结果-南通市图书馆

High-temperature dynamic behav.or in bulk liquid water： A molecular dynamics simulation study using the OPC and TIP4P-Ew potentials

引用

Frontiers of physics 2018年第1期13卷 25-39页

作者： Andrea Gabrieli Marco Sant Saeed Izadi Parv.z Seifpanahi Shabane alexey v. onufriev Giuseppe B. Suffritti Dipartimento di Chimica e Farmacia Universita degli Studi di Sassari Via Vienna 2 07100 Sassari Italy Department of Biomedical Engineering and Mechanics Virginia Tech Blacksburgl VA 24060 USA Department of Physics Virginia Tech Blacksburg VA 24060 USA Departments of Computer Science and Physics Virginia Tech Blacksburg VA 24060 USA Consorzio Interuniv.rsitario Nazionale per la Scienza e Tecnologia dei Materiali (INSTM) Unita di ricerca di Sassari Via Vienna 2 07100 Sassari Italy

Classical molecular dynamics simulations were performed to study the high-temperature （abov. 300 K） dynamic behav.or of bulk water, specifically the behav.or of the diffusion coefficient, hydrogen bond, and nearest-neighbor lifetimes. Two water potentials were compared： the recently proposed ＂globally optimal＂ point charge （OPC） model and the well-known TIP4P-Ew model. By considering the Arrhenius plots of the computed inv.rse diffusion coefficient and rotational relaxation constants, a crossov.r from v.gel-Fulcher-Tammann behav.or to a linear trend with increasing temperature was detected at T＊ ≈ 309 and T＊ ≈ 285 K for the OPC and TIP4P-Ew models, respectiv.ly. Experimen- tally, the crossov.r point was prev.ously observ.d at T＊ ≈ 315 ±5 K. We also v.rified that for the coefficient of thermal expansion αp（T, P）, the isobaric αp（T） curv.s cross at about the same T＊ as in the experiment. The lifetimes of water hydrogen bonds and of the nearest neighbors were ev.luated and were found to cross near T＊, where the lifetimes are about 1 ps. For T 〈 T＊, hydrogen bonds persist longer than nearest neighbors, suggesting that the hydrogen bonding network dominates the water structure at T 〈 T＊, whereas for T 〉 T＊, water behav.s more like a simple liquid. The fact that T＊ falls within the biologically relev.nt temperature range is a strong motiv.tion for further analysis of the phenomenon and its possible consequences for biomolecular systems.

关键词： dynamic crossov.r molecular dynamics bulk liquid water water models

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

Gradient-induced long-range optical pulling force based on photonic band gap

引用

Light(Science & Applications) 2024年第5期13卷 865-874页

作者： Wenlong Lu alexey v.Krasav.n Sheng Lan Anatoly v.Zayats Qiaofeng Dai Guangdong Basic Research Center of Excellence for Structure and Fundamental Interactions of Matter Guangdong Provincial Key Laboratory of Nanophotonic Functional Materials and DevicesSchool of Information and Optoelectronic Science and EngineeringSouth China Normal UniversityGuangzhou 510006China Department of Physics and London Centre for Nanotechnology King’s College LondonLondon WC2R 2LSUK

Optical pulling prov.des a new degree of freedom in optical *** is generally believ.d that long-range optical pulling forces cannot be generated by the gradient of the incident ***,we theoretically propose and numerically demonstrate the realization of a long-range optical pulling force stemming from a self-induced gradient field in the manipulated *** analogy to potential barriers in quantum tunnelling,we use a photonic band gap design in order to obtain the intensity gradients inside a manipulated object placed in a photonic crystal wav.guide,thereby achiev.ng a pulling *** the usual scattering-type optical pulling forces,the proposed gradient-field approach does not require precise elimination of the reflection from the manipulated *** particular,the Einstein-Laub formalism is applied to design this unconv.ntional gradient *** magnitude of the force can be enhanced by a factor of up to 50 at the optical resonance of the manipulated object in the wav.guide,making it insensitiv. to *** dev.loped approach helps to break the limitation of scattering forces to obtain longrange optical pulling for manipulation and sorting of nanoparticles and other *** dev.loped principle of using the band gap to obtain a pulling force may also be applied to other types of wav.s,such as acoustic or water wav.s,which are important for numerous applications.

关键词： optical wav.guide scattering

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

Method for passiv.tion of propellant residues in orbital stage tank of launch v.hicle

引用

Chinese Journal of Aeronautics 2024年第1期37卷 64-76页

作者： v.leriy TRUSHLYAKOv.Iv.n LESNYAK alexey PANICHKIN Department of Av.ation and Rocket Building Omsk State Technical UniversityOmsk 644050Russia Sobolev.Institute of Mathematics of the Siberian Branch of Russian Academy of Sciences Novosibirsk 630090Russia

The problem of remov.ng unused liquid propellant residues from the tanks of spent spacecraft and orbital stages of Launch v.hicles(Lv.leads to their explosion and the formation of space debris in *** prov.de a solution to this problem,a method for remov.ng liquid propellant residues from the Lv.tanks after the mission completion is *** method is based on the gasification of liquid propellant residues in the tanks under acoustic-v.cuum exposure and the discharge of the gasification products into the surrounding outer *** inv.stigations were carried out on a Ground-based Experimental Installation(GEI)to determine the coefficient of heat transfer from the surface of an acoustic radiator to a *** obtained coefficient was then used to calculate the energy costs for the gasification of *** estimates are giv.n on the example of the tank with kerosene residues from a spent second stage of the Lv.Soyuz-2.1 v..The optimal discharge rate at which kerosene does not freeze is 0.14 m^(3)/***,the acoustic exposure leads to an increase in the mass of ev.porated kerosene ov.r a giv.n time by96.1%,and the energy costs are 1756.7 kJ(approximately 50% of the remaining electrical energy).

关键词： Propellant Weightlessness Liquid ev.poration Heat and mass transfer Acoustics v.cuum v.por bubbles

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

Effect of sodium nitroprusside on the microrheological properties of red blood cells in di®erent media

引用

Journal of Innov.tiv. Optical Health Sciences 2024年第5期17卷 23-31页

作者： Petr Ermolinskiy Matv.y Maksimov.Andrei Lugov.sov.alexey Murav.ov.Irina Tikhomirov. Alexander Priezzhev Faculty of Physics M.V.Lomonosov Moscow State University Moscow 119991Russia Faculty of Physical Education K.D.Ushinsky Yaroslav. State Pedagogical Univ.rsity Yaroslav. 150000 Russia Faculty of Natural Sciences K.D.Ushinsky Yaroslav. State Pedagogical Univ.rsity Yaroslav. 150000 Russia

Red blood cell(RBC)aggregation as well as their deformation signi¯cantly affects blood *** processes depend on v.rious factors,one of which is concentration of the nitric oxide,one of the main signaling molecule in the *** purpose of this study was to inv.stigate the effect of nitric oxide on the microrheological properties of red blood cells(RBCs)in RBC samples of v.rious media after the addition of nitric oxide donor sodium nitroprusside in *** properties were measured using laser aggregometer and ektacytometer based on diffuse light scattering and diffraction of laser light on a suspension of RBCs,*** study found that heparin-stabilized blood showed increased RBC aggregation and deformation with sodium nitroprusside concentrations of 100,and 200M,while EDTA-stabilized blood showed slightly decreased aggregation and unchanged *** washed RBCs in dextran solution,the addition of sodium nitroprusside(in the concentrations of 100,and 200M)resulted in decreased aggregation and increased ***-ndings aid in our understanding of nitric oxide's effect on RBC microrheological properties.

关键词： Sodium nitroprusside nitric oxide red blood cells RBC aggregation diffuse light scattering laser diffractometer

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

The effect of long-term application of nitrogen-rich fertilizers on soil resistome:A study of conv.ntional and organic cropping systems

引用

Soil Ecology Letters 2024年第3期6卷 135-150页

作者： alexey S.v.silchenko Ev.enii O.Burlakov.Darya v.Poshv.na Denis S.Gruzdev.Sergey v.Krav.henko Aleksandr v.Iashnikov.Ning Ling Anastasia v.v.silchenko Laboratory of Antimicrobial Resistance Institute of Environmental and Agricultural Biology(X-BIO)Tyumen State UniversityTyumenRussia Research Institute of Mathematics Physics and Computer ScienceDerzhavin Tambov State UniversityTambovRussia International Integrated Research Laboratory for Climate Change Land Use and BiodiversityInstitute of Environmental and Agricultural Biology(X-BIO)Tyumen State UniversityTyumenRussia SciBear OU Tartu Mnt 67/1-13bKesklinna Linnaosa10115 TallinnEstonia Center for Grassland Microbiome State Key Laboratory of Grassland Agro-EcosystemsCollege of Pastoral Agriculture Science and TechnologyLanzhou UniversityLanzhou 730000China

Metagenomic studies of v.rious soil env.ronments hav. prev.ously rev.aled the widespread distribution of antibiotic resistance genes(ARGs)around the *** this study,we applied shotgun metagenomics to inv.stigate differences in microbial communities and resistomes in Chernozem soils that hav. been under long-term organic and conv.ntional cropping *** organic cropping system was seeded with Triticum spelta without any *** conv.ntional cropping system was seeded with Tríticum durum Desf and used mineral fertilizer(NPK),that resulted in an increased amount of total and av.ilable carbon and nitrogen in *** all samples,we identified a total of 21 ARG classes,among which the dominant were v.ncomycin,tetracycline and *** of soil microbial communities rev.aled differences between the studied fields in the relativ. abundances of 14 and 53 genera in topsoil and subsoil,*** analysis showed significant correlations(positiv. and negativ.)among 18 genera and 6 ARGs,as well as between these ARGs and some chemical properties of *** analysis of metagenome-assembled genomes rev.aled that Nitrospirota,Thermoproteota,Actinobacteriota and Binatota phyla of archaea and bacteria serv. as hosts for glycopeptide and fluoroquinolone/tetracycline ***,the data obtained enrich knowledge about the consequences of human agricultural activ.ties in terms of soil microbiome modification and highlight the role of nitrogen cycling taxa,including uncultiv.ted genera,in the formation of soil resistome.

关键词： soil microbiome inorganic fertilizer nitrogen cycle uncultured bacteria chemolithotrophs Binatia

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

Atherosclerosis originating from childhood:Specific features

引用

Journal of Biomedical Research 2024年第3期38卷 233-240页

作者： Anastasia v.Poznyak alexey A.Yakov.ev.MikhailА.Popov.Elena B.Zhigmitov. v.sily N.Sukhorukov.Alexander N.Orekhov Institute for Atherosclerosis Research Moscow 121609Russia Federal Research and Clinical Center of Intensiv. Care Medicine and Rehabilitology Moscow 109240Russia Department of Cardiac Surgery Moscow Regional Research and Clinical InstituteMoscow 129110Russia Laboratory of Angiopathology Institute of General Pathology and PathophysiologyMoscow 125315Russia

Atherosclerosis is extremely ***,it is considered a disease of older people,who most often experience problems with the heart and blood *** much attention from the scientific community has been paid to studying the association between aging and atherosclerosis,as well as its consequences,there is ev.dence that atherosclerosis occurs at an early *** may form both during intrauterine dev.lopment and in *** plays an important role in childhood atherosclerosis,along with prev.ous infectious diseases and excess weight of both the child and the *** the present rev.ew,we examined the dev.lopment of atherosclerosis and the prerequisites in childhood.

关键词： atherosclerosis childhood pediatrics cardiov.scular 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

Elucidating elusiv. quaternary selenide EuCeCuSe3:Synthesis,crystal structure,properties and theoretical studies

引用

Journal of Rare Earths 2024年第1期42卷 163-171,I0006页

作者： Maxim v.Grigoriev.Anna v.Ruseikina Maxim S.Molokeev.v.adimir A.Chernyshev.Aleksandr S.Aleksandrov.ky Alexander S.Krylov.Sv.tlana N.Krylov. Nikolai P.Shestakov.Dmitriy A.v.likanov.Alexander A.Garmonov.alexey v.Matigorov.Ev.eny A.Ostapchuk Thomas Schleid Damir A.Safin Laboratory of Theory and Optimization of Chemical and Technological Processes University of TyumenVolodarskogo Str.6625003TyumenRussian Federation Kirensky Institute of Physics Federal Research Center KSC SB RASAkademgorodok 50 Bld.38660036KrasnoyarskRussian Federation Department of Physics Far Eastern State Transport UniversitySerysheva Str.47680021KrasnoyarskRussian Federation Institute of Natural Sciences and Mathematics Ural Federal University Named After the First President of Russia B.N.YeltsinMira Str.19620002EkaterinburgRussian Federation Department of Photonics and Laser Technology Siberian Federal UniversitySvobodnii Ave.79660079KrasnoyarskRussian Federation Institute of Physics and Technology University of TyumenVolodarskogo Str.6625003 TyumenRussian Federation Institute for Inorganic Chemistry University of StuttgartPfaffenwaldring 55D-70569StuttgartGermany Scientific and Educational and Innov.tion Center for Chemical and Pharmaceutical Technologies Ural Federal University named after the First President of Russia B.N.YeltsinMira Str.19620002 EkaterinburgRussian Federation Univ.rsity of Tyumen Volodarskogo Str.6625003TyumenRussian Federation

We report on the nov.l heterometallic quaternary selenide EuCeCuSe3,the fabrication of which has been a challenge until this *** structure of the reported selenide was elucidated from the powder X-ray diffraction data,which rev.aled the formation of EuCeCuSe3with excellent yield(96.7%)accompanied with a minor fraction of CeSe2(3.3%),and was best solv.d in orthorhombic space group Pnma with the BaLaCuS3structural ***,the crystal structure of the title compound completes the row of the heterometallic quaternary selenides EuRECuSe3(RE=La,Pr,Nd,Sm,Eu,Gd,Tb,Dy,Ho,Er,Tm,Yb,Lu,Y),of which the cerium-based deriv.tiv. exclusiv.ly belongs to the BaLaCuS3structural *** distortion of the CuSe4polyhedron was compared for the whole series of EuRECuSe3compounds using theτ4-descriptor for four coordinated ions,which rev.aled the highest degree of distortion for the Ce3+-containing selenide,followed by the La3+-based ***,the crystallographic and geometrical parameters of the reported selenide were discussed in comparison to the Ce3+-based sulfides SrCeCuS3and *** initio calculations of the crystal structure,a phonon spectrum and elastic constants for the crystal of EuCeCuSe3were also *** types and wav.numbers of fundame ntal modes were determined and the inv.lv.ment of ions participating in the phonon modes was *** experimental IR spectrum of the reported selenide was interpreted and found to be in agreement with the calculated *** experimental direct band gap of EuCeCuSe3was measured to be 1.36 ev.that is consistent with the concept of its origin due to interband transitions between orbitals emerging mainly from 4f(v.lence band)and 5d(conduction band)lev.ls of the Eu2+*** dependence of the Young’s modulus on the direction demonstrates the anisotropy of the elastic properties,while the v.ckers hardness for EuCeCuSe3was calculated to be 5.2 ***,the title compound is paramagnetic abov. 4 K.

关键词： Quaternary selenide Synthesis Crystal structure Ab initio calculations Magnetic measurements Spectroscopy

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

Polariton lasing in Mie-resonant perov.kite nanocav.ty

引用

Opto-Electronic Adv.nces 2024年第4期7卷 27-42页

作者： Mikhail A.Masharin Daria Khmelev.kaia v.leriy I.Kondratiev.Daria I.Markina Anton D.Utyushev.Dmitriy M.Dolgintsev.alexey D.Dmitriev.v.nik A.Shahnazaryan Anatoly P.Pushkarev.Furkan Isik Iv.n v.Iorsh Iv.n A.Shelykh Hilmi v.Demir Anton K.Samusev.Sergey v.Makarov UNAM-Institute of Materials Science and Nanotechnology National Nanotechnology Research CenterDepartment of Electrical and Electronics EngineeringDepartment of PhysicsBilkent UniversityAnkara 06800Turkey ITMO Univ.rsity School of Physics and EngineeringSt.Petersburg 197101Russia Abrikosov.Center for Theoretical Physics MIPTDolgoprudnyiMoscow Region 141701Russia LUMINOUS!Center of Excellence for Semiconductor Lighting and Displays School of Electrical and Electronic EngineeringSchool of Physical and Mathematical SciencesSchool of Materials Science and EngineeringNanyang Technological UniversitySingapore 639798Singapore Department of Physics Engineering Physics and AstronomyQueen’s UniversityKingstonOntario K7L 3N6Canada Science Institute University of IcelandDunhagi 3IS-107ReykjavikIceland Experimentelle Physik 2 Technische Universität DortmundDortmund 44227Germany Qingdao Innov.tion and Dev.lopment Center Harbin Engineering UniversityQingdao 266000China

Deeply subwav.length lasers(or nanolasers)are highly demanded for compact on-chip bioimaging and sensing at the *** of the main obstacles for the dev.lopment of single-particle nanolasers with all three dimensions shorter than the emitting wav.length in the v.sible range is the high lasing thresholds and the resulting *** we ex-ploit exciton-polariton condensation and mirror-image Mie modes in a cuboid CsPbBr3 nanoparticle to achiev. coherent emission at the v.sible wav.length of around 0.53μm from its ultra-small(≈0.007μm3 or≈λ3/20)semiconductor *** polaritonic nature of the emission from the nanocav.ty localized in all three dimensions is prov.n by direct com-parison with corresponding one-dimensional and two-dimensional wav.guiding systems with similar material *** a deeply subwav.length nanolaser is enabled not only by the high v.lues for exciton binding energy(≈35 mev.,re-fractiv. index(>2.5 at low temperature),and luminescence quantum yield of CsPbBr3,but also by the optimization of po-laritons condensation on the Mie resonances with quality factors improv.d by the metallic ***,the key parameters for optimal lasing conditions are intermode free spectral range and phonons spectrum in CsPbBr3,which gov.rn polaritons condensation *** chemically synthesized colloidal CsPbBr3 nanolasers can be potentially de-posited on arbitrary surfaces,which makes them a v.rsatile tool for integration with v.rious on-chip systems.

关键词： nanolaser perov.kite polariton Mie resonance exciton-polariton

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

Expanded Porphyrin Exhibiting Off-Centered Out-of-Plane Coordination to Dysprosium

引用

CCS Chemistry 2024年第7期6卷 1731-1738页

作者： Dmitry I.Nazarov.Jorge Labella alexey v.Kuzmin Maxim A.Faraonov.Ev.enii N.Iv.nov.Salav.t S.Khasanov.Tomas Torres Mikhail K.Islyaikin Dmitri v.Konarev Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry RAS 142432 Chernogolovka Department of Organic Chemistry Universidad Autonoma de Madrid28049 Madrid Institute of Solid-State Physics RAS 142432 Chernogolovka Research Institute of Macroheterocycles Ivanovo State University of Chemistry and Technology15300 Ivanovo G.A.Krestov.Institute of Solution Chemistry of the Russian Academy of Sciences 153045 Ivanovo Institute for Adv.nced Research in Chemical Sciences Universidad Autonoma de Madrid28049 Madrid IMDEA-Nanociencia 28049 Madrid

The complexation of high-spin lanthanides to porphyrinoids is a powerful strategy for the dev.lopment of adv.nced molecular *** this context,the use of expanded porphyrinoids remains elusiv. since their coordination chemistry is challenging to ***,taking inspiration from on-surface chemistry,we explored the coordination of Dy^(3+)to a six-membered porphyrinoid,namely,the hemihexaphyrazine ***,we observ.d the selectiv. formation of a mono-nuclear off-centered,out-of-plane H_(2)Hhp-Dy^(3+)complex when performing the complexation under reductiv. *** this reaction,the oxidation state of the macrocycle did not *** X-ray diffraction analysis,we found that the coordination number of Dy in this complex was *** macrocycle cocrystallized with decamethylcobaltocene(Cp_(2)^(*)Co)molecules,giv.ng rise to a wellordered solid-state packing,gov.rned byπ-π*** a result of this organization,a small magnetic coupling between the neighboring molecules was *** in all,this work prov.des key insights into the coordination of magnetically activ. metals with expanded porphyrinoids,thus motiv.ting the dev.lopment of adv.nced spintronic dev.ces.

关键词： porphyrins dysprosium macrocycle coordination chemistry magnetism

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

Electric tuning of plasmonic resonances in ultrathin gold nanoribbon arrays

引用

Photonics Research 2024年第8期12卷 1750-1759页

作者： ZHENXIN WANG alexey v.RASAv.N CHENXINYU PAN JUNSHENG ZHENG ZHIYONG LI XIN GUO ANATOLY v.AYATS LIMIN TONG PAN WANG State Key Laboratory of Extreme Photonics and Instrumentation College of Optical Science and EngineeringZhejiang UniversityHangzhou 310027China Department of Physics and London Centre for Nanotechnology King’s College LondonStrandLondon WC2R 2LSUK Jiaxing Key Laboratory of Photonic Sensing&Intelligent Imaging Intelligent Optics&Photonics Research CenterJiaxing Research Institute Zhejiang UniversityJiaxing 314000China

Ultrathin plasmonic nanostructures offer an unparalleled opportunity for the study of light–matter interactions at the nanoscale and realization of compact nanophotonic *** this study,we introduce an ultrathin gold nanoribbon array and demonstrate an electric approach to activ.ly tuning its plasmonic resonance,which lev.raging the extreme light confinement capability in the ultrathin plasmonic nanostructure and a robust nanoscale electro-optical effect in indium tin *** the design(to a total thickness as small as 12 nm for a 2-nmthick gold nanoribbon array),we numerically demonstrate a spectral shift in the plasmonic resonance up to 36 nm along with an approximately 16%change in the transmission at a gate v.ltage below 1.7 v.at the wav.length of1.47μ*** work presents progress towards electric tuning of plasmonic resonances in ultrathin metallic nanostructures for v.rious applications including surface-enhanced spectroscopy,spontaneous emission enhancement,and optical modulation.

关键词： plasmon tuning realization

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

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：