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Hadron resonances as rovibrational states

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chinese Physics c 2021年第8期45卷 99-104页

作者： Douglas L.Bernardo cristiano c.Bastos antonio c.Pavao Departamento de Quimica Fundamental Universidade Federal de PernambucoRecife50740-540Brazil Departamento de Quimica Universidade Federal Rural de PernambucoRecife52171-900Brazil

A rovibrational model,including anharmonic,centrifugal,and coriolis corrections,is used to calculate π,K,N,and ∑ orbital and radial *** four orbital excitations of the n meson correspond to the/?(1235),ti2(1670),63(2030),and π4(2250)*** first four radial excitations correspond to the π(1300),π(1800),π(2070),and 7t(2360)*** orbital excitations of the K meson are interpreted as the K_(1)(1270),K_(2)(1770),K_(3)(2320),and K_(4)(2500)resonances;its radial excitations correspond to the K(1460)and K(1830)*** N orbital excitations are identified with the N(1520),N(1680),N(2190),N(2220),and N(2600)*** first four radial excitations of the N family correspond to the N(1440),N(1880),N(2100),and N(2300)*** orbital excitations of the ∑ baryon are associated with the ∑(1670),∑(1915),∑(2100),and ∑(2250)resonances,whereas its radial excitations are identified with the ∑(1660),∑(1770),and ∑(1880)*** proposed rovibrational model calculations show a good agreement with the corresponding experimental values and allow for the prediction of hadron resonances,thereby proving to be useful for the interpretation of excited hadron spectra.

关键词： excited hadron spectrum orbital and radial resonances rovibrational states

oxidative reforming of methane for hydrogen and synthesis gas production:Thermodynamic equilibrium analysis

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Journal of Natural Gas chemistry 2012年第5期21卷 571-580页

作者： antonio c.D.Freitas Reginaldo Guirardello School of chemical Engineering University of Campinas (UNICAMP)Av.Albert Einstein 50013083-852Campinas-SPBrazil

A thermodynamic analysis of methane oxidative reforming was carried out by Gibbs energy minimization （at constant pressure and temperature） and entropy maximization （at constant pressure and enthalpy） methods,to determine the equilibrium compositions and equilibrium temperatures,*** cases were treated as optimization problems （non-linear programming formulation）.The GAMS 23.1 software and the coNoPT2 solver were used in the resolution of the proposed *** hydrogen and syngas production were favored at high temperatures and low pressures,and thus the oxygen to methane molar ratio （o 2 /cH 4） was the dominant factor to control the composition of the product *** o 2 /cH 4 molar ratios higher than 0.5,the oxidative reforming of methane presented autothermal behavior in the case of either utilizing o 2 or air as oxidant agent,but oxidation reaction with air possessed the advantage of avoiding peak temperatures in the system,due to change in the heat capacity of the system caused by the addition of *** calculated results were compared with previously published experimental and simulated data with a good agreement between them.

关键词： thermodynamic analysis methane oxidative reforming Gibbs energy minimization entropy maximization hydrogen and syngas production

The colider and Roosevelt olcanic rocks (sw amazonian craton): geochemistry and sm-nd isotope characteristics of a silicic large igneous province

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Acta Geochimica 2021年第6期40卷 1023-1049页

作者： Bruna Saar de Almeida Mauro césar Geraldes carlos Augusto Sommer Felipe corrales antonio Joāo Paes de Barros Universidade do Estado do Rio de Janeiro Rio de JaneiroBrazil University of Geneva GenevaSwitzerland Universidade Federal do Rio Grande do Sul Rio Grande do SulBrazil METAMAT(Mato Grosso State Geological Survey) CuiabaBrazil

The volcanic rocks of the colíder and Roosevelt formations are extensively exposed in the south-central portion of the Amazonian craton where effusive and pyroclastic rocks have been *** units,topped by chemical sediments and oceanic facies as rhyolite and andesite lavas,rhyodacite,and porphyritic dacite,with frequent intercalations of pyroclastic and epiclastic ***-rock geochemistry for 55 samples of rhyolitic to andesitic composition suggests the involvement of fertile mantle-derived components with E-MoRB to oIB *** analyzed rocks display calc-alkaline to shoshonitic affinity consistent with generation related to an active continental *** whole-rock Sm-Nd isotope data from selected felsic volcanic rocks of the colíder and Roosevelt formations yield negative initial eNd values between–3 and–9,indicating the predominantly crustal nature of the parental magmas with early Archean to late Paleoproterozoic(ca.2.5–2.0 Ga)depleted mantle model ages.

关键词： Amazonian craton Geochemistry Sm-Nd isotopes Paleoproterozoic Volcanism

Litter production and leaf nutrient concentration and remobilization in response to climate seasonality in the central Amazon

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Journal of Forestry Research 2024年第3期35卷 131-141页

作者： Ricardo antonio Marenco Saul Alfredo Antezana-Vera Daniela Pereira Dias Luiz antonio candido Instituto Nacional de Pesquisas da Amazonia Coordenagao de Uso da Terra e Mudanca ClimaticaAv.Andre Araujo 2936ManausAM69067-375Brazil Programa de pos-Graduagao em Agricultura no Tropico Umido Instituto Nacional de Pesquisas da Amazonia-INPAManausAMBrazil Unidade Academica de ciencias Agrarias Universidade Federal de JataiBR 364km 195JataiGO 75801-615Brazil

Litterfall is the largest source of nutrients to for-est soils of tropical ***,variability in lit-terfall production,nutrient remobilization,and changes in leaf nutrient concentration with climate seasonality remain largely unknown for the central *** study meas-ured litterfall production,leaf nutrient remobilization,and leaf area index on a forest plateau in the central *** was measured at monthly intervals during 2014,while nitrogen,phosphorus,potassium,calcium and mag-nesium concentrations of leaf litter and canopy leaves were measured in the dry and rainy seasons,and remobilization rates *** area index was also recorded in the dry and rainy *** litterfall varied from 33.2(in the rainy season)to 87.6 g m^(-2) in the dry season,while leaf area index increased slightly in the rainy *** seasonality had no effect on concentrations of nitrogen,calcium,and magnesium,whereas phosphorous and potassium responded to rainfall seasonality *** phosphorous increased,potassium decreased during the dry *** seasons,nitrogen,potassium,and phosphorous decreased in leaf litter;calcium increased in leaf litter,while magnesium remained unaffected with leaf ***,the five nutrients had similar remobilization rates over the *** absence of climate seasonality on nutrient remobilization suggests that the current length of the dry season does not alter nutrient remobilization rates but this may change as dry periods become more prolonged in the future due to climate change.

关键词： Throughfall Nutrient cycling climatic seasonality Leaf mass per area

Quasi-freestanding graphene on Ni（110）： A graphene/ metal contact with suppressed interface states

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Nano Research 2016年第6期9卷 1795-1800页

作者： antonio Politano Department of Physics University of Calabria via Ponte Bucci 3 I/C 1-87036 Rende (CS) Italy

Graphene/Ni（110） has been studied by time-resolved X-ray photoelectron spectroscopy and near-edge X-ray absorption fine structure. The c ls core level shows a splitting typical of periodically rippled interfaces. The analysis of the c K-edge reveals that the interface states previously observed for graphene/Ni（111） are suppressed in graphene/Ni（110）. This suppression is due to the reduced hybridization of the Dirac-cone electrons in graphene with the d-bands of the （110）-oriented nickel contacts. our results show that, contrary to commensurate growth of graphene on Ni（111）, epitaxially grown graphene on Ni（110） behaves as a quasi-freestanding sheet, as the lattice mismatch gives rise to a moir6 reconstruction.

关键词： graphene electronic properties synchrotron radiation X-ray photoelectronspectroscopy near-edge X-rayphotoelectron spectroscopy

Solitary Bodies and Emotions:contemporary Plastic Art in the context of Individualization Society

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Fudan Journal of the Humanities and Social Sciences 2022年第3期15卷 367-388页

作者： Juan antonio Roche cárcel Department of Sociology I University of AlicanteAlicanteSpain

This article follows the trail of Weber’s comprehensive sociology and uses the hermeneutical method as well as the iconological applied to 11 contemporary works of plastic art which can be described as significant and representative of contemporary *** pursues two specific objectives:(a)analyzing the construction of loneliness both in contemporary plastic art and within the society of individuality and separateness,through human bodies and emotions;and(b)attesting how this theme has evolved in artistic practices from simple to reflexive *** have indeed placed solitary men and women in the geographical and symbolic center of their compositions,additionally providing a contrast with a spatial and temporal environment which marginalizes *** conclude that,for contemporary art,subjects are neither fully fledged individuals nor citizens in their own right and that they do not voluntarily live in an individualized society,but rather in one defined by separateness.

关键词： Sociology of art Sociology of bodies and emotions Individualization society Liquid society Separateness society Loneliness

Interplay between the glass and the gel transition

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Science china(Physics,Mechanics & Astronomy) 2019年第10期62卷 45-50页

作者： Annalisa Fierro antonio de candia antonio coniglio cNR-SPIN c/o Complesso di Monte S.AngeloNapoli 80126Italy Dipartimento di Fisica"Pancini" Universita di Napoli"FedericoⅡ"Complesso di Monte S.AngeloNapoli 80126Italy

By changing the control parameters, many physical systems reach a slow dynamics regime followed by an arrested or a quasiarrested state. Examples, among others, are gels and glasses. In this paper, we discuss some experimental and theoretical results in polymer and colloidal systems, where gel and glass transitions interfere, and use models from Mode coupling Theory（McT）to illustrate the rich phenomenology observed. The continuous and the discontinuous transition lines, found in the McT models,are considered suitable to describe respectively the gel and the glass transitions, so we suggest that the interplay between gel and glass may be interpreted in terms of the F13 McT model, clarifying also the origin of logarithmic decays often observed in such systems. In particular, the theoretical predictions of the McT in the F13 model are compared with Molecular Dynamics simulations in model systems for chemical gels and charged colloids.

关键词： glass gel and sol colloid

First spaceborne demonstration of BeiDou-3 signals for GNSS reflectometry from cYGNSS constellation

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chinese Journal of Aeronautics 2021年第9期34卷 1-10页

作者： Weiqiang LI Estel cARDELLAcH Serni RIBo antonio RIUS Bo ZHoU Institute of Space Sciences(IcE CSIC)Barcelona 08193Spain Institut d'Estudis Espacials de catalunya(IEEc) Barcelona 08034Spain Shanghai Spaceflight Institute of TT&c and Telecommunications Shanghai 201109China

The full constellation of chinese Global Navigation Satellite System(GNSS)Bei Dou-3 has been deployed completely and started fully operational *** addition to providing global Positioning,Navigation and Timing(PNT)services,the Bei Dou-3 satellites transmissions can also be used as the sources of illumination for Earth observation(Eo)with a bistatic radar *** innovative Eo concept,known as GNSS reflectometry(GNSS-R),allows to measure the Earth surface characteristics at high resolution via the reflected L-band radar signals collected by a constellation of small,low cost and low Earth orbiting *** the first time in orbit,earth reflected Bei Dou-3 signal has been detected from the limited sets of raw data collected by the NASA’s cyclone GNSS(cYGNSS)*** feasibility of spaceborne Bei Dou-3 reflections on two typical applications,including sea surface wind and flooding inundation detection,has been *** methodology and results give new strength to the prospect of new spaceborne GNSS-R instruments and missions,which can make multi-GNSS reflectometry observations available to better capture rapidly changing weather systems at better spatio-temporal scales.

关键词： Global Navigation Satellite System(GNSS) BeiDou-3 Small satellites Bistatic radar GNSS Reflectometry(GNSS-R) cYGNSS Tropical cyclone Flood inundation

correlations among large igneous provinces related to the West Gondwana breakup:A geochemical database reappraisal of Early cretaceous plumbing systems

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Geoscience Frontiers 2023年第1期14卷 181-206页

作者： Antomat A.macêdo Filho Maria Helena B.M.Hollanda Stephen Fraser Alisson L.oliveira Alanny c.c.Melo Alana R.Dantas Instituto de Geociências Universidade de São Paulo05508-080São PauloBrazil W.H.Bryan Mining&Geology Research centre Sustainable Minerals InstituteThe University of QueenslandSt Lucia CampusQLD 4072Australia Programa de Pós-Graduação em Geodinamica e Geofisica Universidade Federal do Rio Grande do NorteCampus Universitário S/NLagoa Nova59078-970 NatalRNBrazil

The opening and spreading of the Atlantic ocean between Africa and South America evolved during the Early cretaceous and were preceded by dramatic tholeiitic(mafic)magmatism and minor silicic and alkaline *** features are presently recognized from the equatorial regions of Brazil and Africa to the Falklands and South *** southeastern South America,continental flood basalts and related plumbing systems constitute the ParanáMagmatic Province(PMP),whose African counterpart is the Etendeka Magmatic Province(EMP).In northeastern Brazil,dike swarms and sill complexes compose the Equatorial Atlantic Magmatic Province(EQUAMP).As a common feature,these provinces are chemically represented by two prevalent magma types:(1)tholeiitic basalts and basaltic andesites with lowTi(Tio_(2)o including transitional Ti tholeiites with Tio_(2)~2.7-1.7 wt.%,and low incompatible element *** type is predominantly found in the southern PMP and EMP,with minor occurrences in the EQUAMP.(2)Tholeiitic basalts and basaltic andesites with high Ti(Tio_(2)>~2 wt.%)and incompatible element *** Ti tholeiites are relevant in the northern PMP and EMP,and dominant in *** rocks(Sio_(2)=57-65 wt.%)interpreted as byproducts of assimilation and/or fractional crystallization(AFc)processes from high Ti tholeiitic magmas,are scarce(but present)in all three *** accurate analysis of multivariable databases collected from the literature for dikes and sills,including major and trace element and radiogenic isotope data,reveals close similarities in their geochemical *** a paleogeographic reconstruction of West Gondwana,the intrusive remnants of the PMP,EMP and EQUAMP are spread over an area of nearly 10×10^(6)km^(2).forming perhaps the most extensive set of plumbing systems on Earth,with a relatively consistent chronology based on a vast collection of K-Ar and^(40)Ar/^(39)Ar data available in the *** work provides the first c

关键词： LIP-related plumbing systems continental tholeiites Paraná-Etendeka EQUAMP Self-organizing maps