检索结果-南通市图书馆

Quantum-mechanical effects in photoluminescence from thin crystalline gold films

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

Light(Science & Applications) 2024年第4期13卷 783-794页

作者： Alan R.Bowman Alvaro Rodríguez Echarri fatemeh Kiani fadil Iyikanat Ted V.Tsoulos joel D.Cox Ravishankar Sundararaman f.Javier García de Abajo Giulia Tagliabue Laboratory of Nanoscience for Energy Technologies(LNET) STIÉcole Polytechnique Fédérale de Lausanne(EPFL)LausanneSwitzerland ICfO–Institut de Ciencies fotoniques The Barcelona Institute of Science and TechnologyCastelldefels(Barcelona)Spain. MBI–Max-Born-Institut BerlinGermany. POLIMA–Center for Polariton-driven Light–Matter Interactions University of Southern DenmarkOdense MDenmark. Danish Institute for Advanced Study University of Southern DenmarkOdense MDenmark. Department of Materials Science&Engineering Rensselaer Polytechnic InstituteTroyNYUSA. Department of Physics Applied Physicsand AstronomyRensselaer Polytechnic InstituteTroyNYUSA. ICREA–Institucio Catalana de Recerca i Estudis Avancats BarcelonaSpain

Luminescence constitutes a unique source of insight into hot carrier processes in metals,including those in plasmonic nanostructures used for sensing and energy ***,being weak in nature,metal luminescence remains poorly understood,its microscopic origin strongly debated,and its potential for unraveling nanoscale carrier dynamics largely ***,we reveal quantum-mechanical effects in the luminescence emanating from thin monocrystalline gold ***,we present experimental evidence,supported by first-principles simulations,to demonstrate its photoluminescence origin(i.e.,radiative emission from electron/hole recombination)when exciting in the interband *** model allows us to identify changes to the measured gold luminescence due to quantum-mechanical effects as the gold film thickness is ***,such effects are observable in the luminescence signal from flakes up to 40 nm in thickness,associated with the out-of-plane discreteness of the electronic band structure near the fermi *** qualitatively reproduce the observations with first-principles modeling,thus establishing a unified description of luminescence in gold monocrystalline flakes and enabling its widespread application as a probe of carrier dynamics and light-matter interactions in this *** study paves the way for future explorations of hot carriers and charge-transfer dynamics in a multitude of material systems.

关键词： luminescence quantum crystalline

Hydrogeochemical and isotopic assessment of the origin of NO_(3)^(−)and N-NH_(3)contents in the aquifer located in a closed lacustrine volcano-sedimentary basin in the metropolitan area of Mexico City

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

Acta Geochimica 2024年第4期43卷 719-736页

作者： Jose Ivan Morales-Arredondo Maria Aurora Armienta Hernandez joel Edmundo Ortega-Gutierrez Elisa Cuellar Ramirez Natural Resources Department Institute of GeophysicsNational Autonomous University of MexicoCiudad Universitaria No.3000Col.Copilco UniversidadCoyoacán Delegation04360 MexicoCDMXMexico Instituto Politecnico Nacional ***án 55La Laguna Ticoman07340 MexicoCDMXMexico Benemérita Universidad Autónoma de Puebla Ciudad Universitaria Col.San ManuelPueblaPueMexico

To explain the presence and spatial distribution of NO_(3)^(−)and N-NH_(3)in the Aquifer of the Metropolitan Area of Mexico City(AMAMC),a hydrogeochemical and isotopic analysis using^(13)C DIC(as well as the stable isotopes^(18)O and^(2)H)in groundwater was *** aquifer is located in an old closed lacustrine volcano-sedimentary basin;some wells hosted in the semi-confined zone contain high N-NH_(3)concentrations,while others present NO_(3)^(−)contents in the recharge zones(hosted in an oxidizing environment).In this study,a change in the isotopic signature(primarily in^(18)O and^(2)H)was observed from the recharge zones to the basin center in some of the wells with high NO_(3)^(−)concentrations,this behavior can be attributed to evaporation during the incorporation of recently infiltrated *** addition,the results for^(13)C(along with ^(2) H)in wells with the highest N-NH_(3)concentrations exhibited an atypically broad range of *** indicated the occurrence of hydrogeochemical and/or biochemical processes in the aquifer(in an oxidizing or reducing environment),such as organic degradation,bacterial decomposition(primarily in the ancient Lake Texcoco and which acts as a natural sink for carbon,nitrogen,sulfur,and phosphorus),besides rock weathering and dissolution,which may be responsible for a very marked isotopic modification of the^(13)C(and,to a lesser extent,2 H).Methanotrophic bacterial activity and methanogenic activity may be related to N-NH_(3)removal processes by oxidation and residual water incorporation respectively,whereas the increase in the NO_(3)^(−)content in some wells is due to the recent contribution of poor-quality water due to contamination.

关键词： 18 O and^(13)C isotopes Iron Hydrogeochemical processes Nitrate Nitrogen species

Application of near-infrared spectroscopy for fast germplasm analysis and classification in multi-environment using intact-seed peanut(Arachis hypogaea L.)

在线全文

学校读者我要写书评

暂无评论

Oil Crop Science 2024年第2期9卷 132-141页

作者： fentanesh Chekole Kassie Gilles Chaix Hermine Bille Ngalle Maguette Seye Coura fall Hodo-Abalo Tossim Aissatou Sambou Olivier Gibert fabrice Davrieux Joseph Martin Bell Jean-francois Rami Daniel fonceka joel Romaric Nguepjop Department of Plant Biology and Physiology Faculty of SciencesUniversity of Yaounde IYaoundeP.O.Box 337Cameroon Department of Plant Science College of AgricultureWolaita Sodo UniversitySodoP.O.Box 138Ethiopia CIRAD UMR AGAP InstitutMontpellierFrance AGAP Institut Univ MontpellierCIRADINRAEInstitut AgroMontpellierFrance ChemHouse Research Group MontpellierFrance Centre D’Etudes Regional Pour L’Amelioration de L’Adaptation a La Secheresse(CERAAS/ISRA) Route de KhomboleThiesBP 3320Senegal Dispositif de Recherche et de formation en Partenariat Innovation et Amelioration Varietale en Afrique de L’Ouest(IAVAO)CERAASRoute de KhomboleThiesBP 3320Senegal CIRAD UMR QUALISUDSaint PierreFrance

Peanut is a worldwide oilseed crop and the need to assess germplasm in a non-destructive manner is important for seed nutritional *** this study,Near Infrared Spectroscopy(NIRS)was applied to rapidly assess germplasm variability from whole seed of 699 samples,field-collected and assembled in four genetic and environmentbased sets:one set of 300 varieties of a core-collection and three sets of 133 genotypes of an interspecific population,evaluated in three environments in a large spatial scale of two countries,Mbalmayo and Bafia in Cameroon and Nioro in Senegal,under rainfed *** elemental spectra were gathered on six subsets of seeds of each sample,after three rotation scans,with a spectral resolution of 16 cm-1over the spectral range of867 nm to 2530 *** were then processed by principal component analysis(PCA)coupled with Partial least squares-discriminant analysis(PLS-DA).As results,a huge variability was found between varieties and genotypes for all NIR wavelength within and between *** magnitude of genetic variation was particularly observed at 11 relevant wavelengths such as 1723 nm,usually related to oil content and fatty acid *** yielded the most chemical attributes in three significant PCs(i.e.,eigenvalues>10),which together captured 93%of the total variation,revealing genetic and environment structure of varieties and genotypes into four clusters,corresponding to the four samples *** pattern of genetic variability of the interspecific population covers,remarkably half of spectrum of the core-collection,turning out to be the ***,a PLS-DA model was developed and a strong accuracy of 99.6%was achieved for the four sets,aiming to classify each seed sample according to environment *** confusion matrix achieved for the two sets of Bafia and Nioro showed 100%of instances classified correctly with 100%at both sensitivity and specificity,confirming that their seed quality was different f

关键词： Groundnut Oilseed Near infrared spectroscopy Germplasm analysis Environment Nutritional Breeding

Towards a comprehensive understanding of p75 neurotrophin receptor functions and interactions in the brain

在线全文

学校读者我要写书评

暂无评论

Neural Regeneration Research 2022年第4期17卷 701-704页

作者： joel f.Ritala Seán BLyne Antti Sajanti Romuald Girard Janne Koskimäki Division of Clinical Neurosciences Department of NeurosurgeryTurku University Hospital and University of TurkuTurkuFinland Neurovascular Surgery Program Section of NeurosurgeryThe University of Chicago Medicine and Biological SciencesChicagoILUSA Department of Psychiatry Central Hospital of Southern OstrobothniaSeinäjokiFinland Neuroscience Center HiLIFEUniversity of HelsinkiHelsinkiFinland

The role of neurotrophins in neuronal plasticity has recently become a strong focus in neuroregeneration research field to elucidate the biological mechanisms by which these molecules modulate synapses,modify the response to injury,and alter the adaptation ***,the prior studies highlight the role of p75 neurotrophin receptor(p75^(NTR))in various injuries and diseases such as central nervous system injuries,Alzheimer's disease and amyotrophic lateral *** comprehensive elucidation of the mechanisms,and therapies targeting these molecular signaling networks may allow for neuronal tissue regeneration following an *** to a diverse role of the p75^(NTR)in biology,the body of evidence comprising its biological role is diffusely spread out over numerous *** review condenses the main evidence of p75^(NTR)for clinical applications and presents new findings from published literature how data mining approach combined with bioinformatic analyses can be utilized to gain new hypotheses in a molecular and network level.

关键词： bioinformatics brain injury data mining neuron neurotrophins p75^(NTR) plasticity regeneration

Phylogenetics of varied subtypes of avian influenza viruses in China： potential threat to humans

在线全文

学校读者我要写书评

暂无评论

Protein & Cell 2014年第4期5卷 253-257页

作者： Weifeng Shi Wei Li Xianbin Li joel Haywood Juncai Ma George f.Gao Di Liu School of Basic Medical Sciences Taishan Medical CollegeTaian 271016China Network Information Center Institute of MicrobiologyChinese Academy of SciencesBeijing 100101China Shenzhen Institute of Advanced Technology Chinese Academy of ScienceShenzhen 518055China University of Chinese Academy of Sciences Beijing 100049China CAS Key Laboratory of Pathogenic Microbiology and Immunology Institute of MicrobiologyChinese Academy of SciencesBeijing 100101China Beijing Institutes of Life Science Chinese Academy of SciencesBeijing 100101China Office of Director-General Chinese Center for Disease Control and Prevention(China CDC)Beijing 102206China

Dear Editor, Since february 2013, infections with several novel avian- origin influenza viruses have occurred in Taiwan and the Mainland of China. The H7N9 influenza virus has caused 136 human infections with 44 deaths in the first influenza season, and has continued to cause infections during the current influenza season （Li et al., 2014）. As of february 11th, 2014, a total of 331 human infections with 101 deaths in China have been reported （http：//***）. During the outbreak of H7N9 in the Mainland of China, Tai- wan reported the first human infection of avian H6N1 influ- enza virus, which again hit the public （Shi et al., 2013a; Wei et al., 2013）. In November 2013, the first infection of H10N8 influenza virus was reported by Nanchang Center for Dis- ease Control and Prevention （Chen et al., 2014）.

关键词： Influenza Virus Internal Gene H7N9 Virus Avian Influenza Virus Influenza Season

Dynamics of a Rotating Sphere on free Surface of Vibrated Granular Materials

在线全文

学校读者我要写书评

暂无评论

Chinese Physics Letters 2018年第8期35卷 44-48页

作者： Adones B.Dengal joel T.Maquiling Geophysics Research Laboratory Department of Physics School of Science and EngineeringAteneo de Manila University Department of Physics College of Natural Sciences and Mathematics Mindanao State University

We investigate the rotational dynamics of a low-density sphere on the free surface of a vertically vibrated granular material（VGM）. The dynamical behavior of the sphere is influenced by the external energy input from an electromagnetic shaker which is proportional to ε,where ε is equal to the ratio between the square of the dimensionless acceleration Γ and the square of the vibration frequency f of the container. Empirical results reveal that as the VGM transits from local-to-global convection,an increase in ε generally corresponds to an increase in the magnitudes of the rotational ω（RS） and translational v（CM） velocities of the sphere, an increase in the observed tilting angle θ（bed） of the VGM bed, and a decrease in the time t（wall） it takes the sphere to roll down the tilted VGM bed and hit the container wall. During unstable convection, an increase in ε results in a sharp decrease in the sphere＇s peak and mean ω（RS）,and a slight increase in t（wall）.for the range of ε values covered in this study, the sphere may execute persistent rotation, wobbling or jamming, depending on the vibration parameters and the resulting convective flow in the system.

关键词： Dynamics of a Rotating Sphere on free Surface of Vibrated Granular Materials

fundamentals of financial management / Concise 3rd ed. Concise 3rd ed.

在线全文

学校读者我要写书评

暂无评论

Fundamentals of financial management / Concise 3rd ed.

A critical analysis of the reported association between vasectomy and frontotemporal dementia

2002年

作者： Eugene f. Brigham joel f. Houston.

来源：畅想之星图书光盘版（南... 评论

在线全文

畅想之星图书光盘版（南通市图书馆镜像）

学校读者我要写书评

暂无评论

Asian Journal of Andrology 2012年第6期14卷 903-904页

作者： Tobias S K6hler Jeremy T Choy Anees A fazili joel f Koenig Robert E Brannigan Division of Urology Southern Illinois University School of Medicine Springfield IL 62794 USA Department of Urology Northwestern University Feinberg School of Medicine Chicago IL 60611 USA Department of Urology University of Rochester Medical Center Rochester NY 14642 USA

Dear Editor, Researchers reported an association between vasectomy and pri- mary progressive aphasia （PPA—a rare variety of frontotemporal dementia） in a 2006 manuscript in Cognitive Behavioral Neurology detailing ...

关键词：

Reconstructing f(T) modified gravity from ECHDE and ECNADE models

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

Communications in Theoretical Physics 2020年第9期72卷 75-88页

作者： A E Godonou Ines G Salako M J S Houndjo Etienne Baffou joel Tossa Institut de Mathematiques et de Sciences Physiques(IMSP) 01 BP 613 Porto-NovoBenin Ecole de Genie Rural(EGR) 01 BP 55 KetouBenin faculte des Sciences et Techniques de Natitingou(fAST) BP 72NatitingouBenin

We investigate alternative candidates to dark energy(DE) that can explain the current state of the Universe in the framework of the generalized teleparallel theory of gravity f(T), where T denotes the torsion scalar. To achieve this, we carry out a series of reconstructions taking into account the ordinary and entropy-corrected versions of the holographic and new agegraphic DE *** models are used as alternatives to DE in the literature in order to describe the current state of our Universe. It is remarked that the proposed models indicate behavior akin to phantom or quintessence models. furthermore, we also generate the parameters of the equation of state associated with entropy-corrected models and we observe a phase transition between the quintessence state and phantom state as it is shown by the recent observational data. We also investigate the stability of these models and we create the {r-s} trajectories and compare with the ΛCDM limit. The behavior of certain physical parameters such as the speed of sound and the Statefinder diagnostic pair {r-s} is compatible with the current observational data.

关键词： teleparallel gravity ECHDE ECNADE