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Semileptonic bc to cc and bb to bc baryon decays and heavy quark spin symmetry

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Chinese Physics C 2010年第9期34卷 1364-1367页

作者： j.nieves j.M.Flynn E.Hernández Instituto de Física corpuscular (IFIC) Centro Mixto Universidad de Valencia-CSICInstitutos de Investigación de Paterna School of Physics and Astronomy University of Southampton Departamento de Física Fundamental e IUFFyM Universidad de Salamanca

We study the semileptonic decays of the lowest-lying bc baryons to the lowest-lying cc baryons （Ξ （＊） bc → Ξ （＊） cc and Ω （＊） bc → Ω （＊） cc ）,in the limit m b,m c Λ QCD and close to the zero recoil *** separate heavy quark spin symmetries make it possible to describe all these decays using a single form *** also show how these constraints can be used to test the validity of different quark model *** to bc baryon decays are also discussed.

关键词： heavy quark spin symmetry semileptonic decays constituent quark modelsIf

Charmed hadrons in nuclear medium

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Chinese Physics C 2010年第9期34卷 1335-1338页

作者： L.Tolos D.Gamermann C.Garcia-Recio R.Molina j.nieves E.Oset A.Ramos Theory Group.KVI.University of Groningen Instituto de Física Corpuscular (centro mixto CSIC-UV Institutos de Investigación de Paterna Aptdo.2208546071ValenciaSpain) Departamento de Física Atómica Molecular y NuclearUniversidad de Granada Departament d'Estructura i Constituents de la Matèria Universitat de Barcelona

We study the properties of charmed hadrons in dense matter within a coupled-channel approach which accounts for Pauli blocking effects and meson self-energies in a self-consistent *** analyze the behaviour in this dense environment of dynamically-generated baryonic resonances as well as the open-charm meson spectral *** discuss the implications of the in-medium properties of open-charm mesons on the D s0 （2317） and the predicted X（3700） scalar resonances.

关键词： open-charm mesons spectral function dynamically-generated baryonic resonances charmed and hidden charmed scalar resonances

Global spatio-temporally harmonised datasets for producing high-resolution gridded population distribution datasets

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Big Earth Data 2019年第2期3卷 108-139页

作者： Christopher T.Lloyd Heather Chamberlain David Kerr Greg Yetman Linda Pistolesi Forrest R.Stevens Andrea E.Gaughan jeremiah j.nieves Graeme Hornby Kytt MacManus Parmanand Sinha Maksym Bondarenko Alessandro Sorichetta Andrew j.Tatem WorldPop School of Geography and Environmental ScienceUniversity of SouthamptonSouthamptonUK Flowminder Foundation StockholmSweden Center for International Earth Science Information Network(CIESIN) Columbia UniversityPalisadesNYUSA Department of Geography and Geosciences University of LouisvilleLouisvilleKYUSA GeoData University of SouthamptonSouthamptonUK

Multi-temporal,globally consistent,high-resolution human population datasets provide consistent and comparable population distributions in support of mapping sub-national heterogeneities in health,wealth,and resource access,and monitoring change in these over *** production of more reliable and spatially detailed population datasets is increasingly necessary due to the importance of improving metrics at sub-national and multitemporal *** is in support of measurement and monitoring of UN Sustainable Development Goals and related *** response to these agendas,a method has been developed to assemble and harmonise a unique,open access,archive of geospatial *** are provided as global,annual time series,where pertinent at the timescale of population analyses and where data is available,for use in the construction of population distribution *** archive includes sub-national census-based population estimates,matched to a geospatial layer denoting administrative unit boundaries,and a number of co-registered gridded geospatial factors that correlate strongly with population presence and ***,we describe these harmonised datasets and their limitations,along with the production ***,we demonstrate applications of the archive by producing multi-temporal gridded population outputs for Africa and using these to derive health and development *** geospatial archive is available at https://***/10.5258/SOTON/WP00650.

关键词： Human population subnational global spatial dataset multi-temporal

Muscle strength deficits are associated with low bone mineral density in young pediatric cancer survivors:The iBoneFIT project

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journal of Sport and Health Science 2024年第3期13卷 419-427页

作者： Andres Marmol-Perez jose j.Gil-Cosano Esther Ubago-Guisado Francisco j.Llorente-Cantarero juan Francisco Pascual-Gázquez Kirsten K.Ness Vicente Martinez-Vizcaino jonatan R.Ruiz Luis Gracia-Marco Department of Physical Education and Sports Faculty of Sport SciencesSport and Health University Research Institute(iMUDS)University of GranadaGranada 18011Spain Department of Epidemiology and Cancer Control St.Jude Children's Research HospitalMemphisTN 38105USA Department of Communication and Education Loyola University AndalusiaSeville 41704Spain Biosanitary Research Institute ibs.GranadaGranada 18012Spain Maimonides Biomedical Research Institute of Cordoba(IMIBIC) Cordoba 14004Spain CIBEROBN Biomedical Research Networking Center for Physiopathology of Obesity and NutritionCarlos III Health InstituteMadrid 28029Spain Department of Specific Didactics Faculty of EducationUniversity of CordobaCordoba 14071Spain Pediatric and adolescent hematology and oncology service Pediatrics and Pediatric Surgery Clinical Management UnitVirgen de las Nieves University HospitalGranada 18014Spain Health and Social Research Center Universidad de Castilla-La ManchaCuenca 13001Spain

Background Pediatric cancer survivors are at increased risk of muscle weakness and low areal bone mineral density(aBMD).However,the prevalence of muscle strength deficits is not well documented,and the associations of muscle strength with aBMD are unknown in this ***,this study aimed to investigate the prevalence of upper-and lower-body muscle strength deficits and to examine the associations of upper-and lower-body muscle strength with age-,sex,and race-specific aBMD Z-scores at the total body,total hip,femoral neck,and lumbar *** This cross-sectional study included 116 pediatric cancer survivors(12.1±3.3 years old,mean±SD;42.2%female).Upper-and lower-body muscle strength were assessed by handgrip and standing long jump test,***‑energy X‑ray absorptiometry was used to measure aBMD(g/cm2).Associations between muscle strength and aBMD were evaluated in multivariable linear regression *** regression was used to evaluate the contribution of muscle strength(1-decile lower)to the odds of having low aBMD(Z-score≤1.0).All analyses were adjusted for time from treatment completion,radiotherapy exposure,and body mass *** More than one-half of survivors were within the 2 lowest deciles for upper-(56.9%)and lower-body muscle strength(60.0%)in comparison to age-and sex-specific reference *** strength deficits were associated with lower aBMD Z-scores at all sites(B=0.133–0.258,p=0.001–0.032).Each 1-decile lower in upper-body muscle strength was associated with 30%–95%higher odds of having low aBMD Z-scores at all *** 1-decile lower in lower-body muscle strength was associated with 35%–70%higher odds of having low aBMD Z-scores at total body,total hip,and femoral *** Muscle strength deficits are prevalent in young pediatric cancer survivors,and such deficits are associated with lower aBMD Z-scores at all *** results suggest that interventions designed to improve muscle strength in t

关键词： Bone health Childhood cancer DXA Lean mass Resistance training

Use of fly and bottom ashes from a thermoelectrical plant in the synthesis of geopolymers:Evaluation of reaction efficiency

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Energy Geoscience 2021年第2期2卷 167-173页

作者： Leidy j.jaramillo nieves Fabio Elyseu Silviany Goulart Mariana de Souza Pereira Erick Zabot Valvassori Adriano Michael Bernardin Ceramic Materials Group Universidade do Extremo Sul CatarinenseAv.Universitaria 110588806-000CriciumaSanta CatarinaBrazil

The use of by-products as raw materials in the manufacturing of industrial products has risen in the last years because of environmental *** example is the use of coal ashes from thermalelectrical plants in the production of geopolymer–a green cement made by mixing aluminosilicate with alkaline *** this study,fly and bottom ashes from a thermal-electrical unit were used as sources of aluminosilicate in the synthesis of geopolymers.A mixture of sodium hydroxide(10 mol/L)and sodium silicate(SiO_(2)/Na_(2)O ratio of 2.2)was used as the alkaline *** type(fly or bottom ash)and content of the ash were the variables in the *** ashes were characterized by X-ray fluorescence(XRF),X-ray diffraction(DRX),particle size distribution(PSD),specific surface area(BET),and thermal analysis(DTA/TGA).The ash-based geopolymer samples were measured to obtain their compressive strength after *** evolution of the geopolymerization process was also assessed based on final alkali concentration *** results show that it is possible to obtain geopolymers using coal ashes as raw materials with high solid *** compressive strength for the bottom ash geopolymer after 90 days of curing is 35 *** low concentration of unreacted alkalis after curing(1.5×10^(-3)e 3.5×10^(-3)M)corresponds to high efficiency of the geopolymerization reaction.

关键词： Coal ash Geopolymer Industrial by-product Geopolymerization reaction

Note on X(3872) production at hadron colliders and its molecular structure

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Chinese Physics C 2017年第12期41卷 1-3页

作者： Miguel Albaladejo 郭奉坤 Christoph Hanhart Ulf-G.Mei?ner juan nieves Andreas Nogga 杨智 Departamento de Física Universidad de Murcia CAS Key Laboratory of Theoretical Physics Institute of Theoretical PhysicsChinese Academy of Sciences School of Physical Sciences University of Chinese Academy of Sciences Institute for Advanced Simulation Institut für Kernphysik and Jülich Center for Hadron Physics Helmholtz-Institut für Strahlen- und Kernphysik and Bethe Center for Theoretical Physics Universitt Bonn Instituto de Física Corpuscular (IFIC) Centro Mixto CSIC-Universidad de ValenciaInstitutos de Investigación de Paterna Institute of Modern Physics Chinese Academy of Sciences

The production of the X（3872） as a hadronic molecule in hadron colliders is clarified. We show that the conclusion of Bignamini et al., Phys. Rev. Lett. 103（2009） 162001, that the production of the X（3872） at high pT implies a non-molecular structure, does not hold. In particular, using the well understood properties of the deuteron wave function as an example, we identify the relevant scales in the production process.

关键词： X(3872) hadronic molecules exotic hadrons

Charmed baryon resonances with heavy-quark symmetry

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Chinese Physics C 2009年第12期33卷 1323-1326页

作者： L. Tolos C. Garcia-Recio V. K. Magas T. Mizutani j. nieves A. Ramos L. L. Salcedo Theory Group KVI University of Groningen Zernikelaan 25 9747 AA Groningen The Netherlands Departamento de Física Atómica Molecular y Nuclear Universidad de Granada E-18071 Granada Spain Departament d'Estructura i Constituents de la Matèria and Institut de Ciències del Cosmos Universitat de Barcelona E-08028 Barcelona Spain Department of Physics Virginia Polytechnic Institute and State University Blacksburg VA 24061 USA Instituto de Física Corpuscular (centro mixto CSIC-UV) Institutos de Investigación de Paterna Aptdo. 22085 E-46071 Valencia Spain

We study charmed baryon resonances that are generated dynamically from a coupled-channel unitary approach that implements heavy-quark symmetry. Some states can already be identified with experimental observations, such as Ac（2595）, Ac（2660）, Ec（2902） or Ac（2941）, while others need a compilation of more experimental data as well as an extension of the model to include higher order contributions. We also compare our model to previous SU（4） schemes.

关键词： charmed baryon resonances heavy-quark symmetry SU(8) and SU(4) spin-flavor symmetry

Multiscale assessment of ground,aerial and satellite spectral data for monitoring wheat grain nitrogen content

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Information Processing in Agriculture 2023年第4期10卷 504-522页

作者： joel Segarra Fatima Zahra Rezzouk nieves Aparicio jon González-Torralba Iker Aranjuelo Adrian Gracia-Romero jose Luis Araus Shawn C.Kefauver Integrative Crop Ecophysiology Group Plant Physiology SectionFaculty of BiologyUniversity of BarcelonaBarcelona 08028Spain AGROTECNIO(Center for Research in Agrotechnology) Lleida 251981Spain Agro-technological Institute of Castilla y León(ITACyL) Valladolid 47071Spain Grupo AN Tajonar 31192NavarreSpain Instituto de Agrobiotecnología(IdAB) CSIC-Gobierno de NavarraMutilva Baja 31192PamplonaNavarreSpain

Wheat grain quality characteristics have experienced increasing attention as a central factor affecting wheat end-use products quality and human ***,in the last decades a reduction in grain quality has been ***,it is central to develop efficient quality-related phenotyping *** this sense,one of the most relevant wheat features related to grain quality traits is grain nitrogen content,which is directly linked to grain protein content and monitorable with remote sensing ***,the relation between nitrogen fertilization and grain nitrogen content(protein)plays a central role in the sustainability of *** aiming to develop efficient phenotyping tools using remote sensing instruments and to advance towards a field-level efficient and sustainable monitoring of grain nitrogen status,this paper studies the efficacy of various sensors,multispectral and visible red-greenblue(RGB),at different scales,ground and unmanned aerial vehicle(UAV),and phenological stages(anthesis and grain filling)to estimate grain nitrogen *** models were calculated using vegetation indices at each sensing level,sensor type and phenological ***,this study explores the up-scalability of the best performing model to satellite level Sentinel-2 equivalent *** found that models built at the phenological stage of anthesis with UAV-level multispectral cameras using red-edge bands outperformed grain nitrogen content estimation(R2=0.42,RMSE=0.18%)in comparison with those models built with RGB imagery at ground and aerial level,as well as with those built with widely used ground-level multispectral *** also demonstrated the possibility to use UAV-built multispectral linear models at the satellite scale to determine grain nitrogen content effectively(R2=0.40,RMSE=0.29%)at actual wheat fields.

关键词： Wheat Remote sensing Sentinel-2 Grain nitrogen content Phenotyping

Effect of the enrichment time with the tuna orbital oil emulsion on the fatty acids profile of juveniles of Artemia franciscana

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Aquaculture and Fisheries 2021年第1期6卷 69-74页

作者： Mario nieves-Soto Ricardo Lozano-Huerta Diana j.Lòpez-Peraza María A.Medina-jasso Miguel AHurtado-Oliva joséF.Bermudes-Lizárraga Facultad de Ciencias del Mar Universidad Autónoma de SinaloaPaseo Claussen s/n.Los PinosMazatlánC.P.8200Mexico

Artemia is deficient in polyunsaturated fatty acids(PUFAs),particularly in arachidonic(ARA,20:4n-6),eicosapentaenoic(EPA,20:5n-3),and docosahexaenoic acid(DHA,22:6n-3).The aim of this study was to determine the optimal time in which the higher contents of PUFAs in juveniles of Artemia franciscana were obtained by the effect of enrichment with the tuna orbital oil *** enrichment periods were evaluated:3,6,9,12,15 and 18 h,in addition to a control treatment(0 h).The most abundant fatty acids in *** were monounsaturated(43.10%±4.35–52.92%±5.82%),followed by saturated(33.83%±1.71–42.33%±2.31%)and PUFAs(8.86%±2.83%–21.32%±2.38%).ARA decreased over the enrichment time;the maximum content was 5.74±0.37%at 3 h,which was not statistically different with respect to the content recorded at 0 *** highest content of EPA was at 3 h(6.47%±1.44%),without significant differences with the content registered at 0 h,while that from 6 h and until 15 h tended to decrease *** 6 h,the content of DHA(8.84%±2.72%)was significantly higher compared to the rest of the treatments,which did not differ among themselves,or with the *** to the 6 h and until 15 h,the content of PUFAs tended to decrease,which could indicate the metabolization of them by ***,coupled with the possible oxidation of these fatty acids in the enrichment solution.

关键词： Artemia franciscana juveniles Bioencapsulation Essential fatty acids Tuna orbital oil emulsion