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Oppos.te latitudinal gradients for species richness and phylogenetic diversity of endemic snakes in the Atlantic Forest

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Current Zoology 2024年第4期70卷 522-530页

作者： joséThales da Motta Portillo josuéAnderson Rēgo Azevedo Fausto Erritto Barbo Ricardo j.Sawaya Programa de pos.Graduacao em Biologia Animal Instituto de BiocienciasLetras e Ciencias ExatasUniversidade Estadual Paulista"Julio de Mesquita Filho"Rua Cristovao Colombo2265Sao Josédo Rio PretoSao Paulo 15054-000Brazil Programa de Colecoes Cientificas Biologicas Coordenagao de BiodiversidadeInstituto Nacional de Pesquisas da AmazoniaAvenida AndréAraujo2936ManausAmazonas 69067-375Brazil Gothenburg Global Biodiversity Centre University of GothenburgBox 461GothenburgVastra Gotaland SE-40530Sweden Instituto Federal de Educacao Ciencia e Tecnologia de Minas GeraisRodovia Machado-Paraguacukm 3MachadoMinas Gerais 37750-000Rraizil Centro de Ciencias Naturais e Humanas UniversidadeFederaldo ABCRua Arcturus03Sao Bernardo do CampoSao Paulo09606-070Brazil

The decrease in species richness toward higher latitudes is an expected biogeographical *** pattern could be related to particular envi-ronmental constraints and the evolutionary history of ***,species richness does not fully represent the evolutionary history of the clades behind their *** diversity better clarifies the role of historical factors in biogeographical *** analyzed envi-ronmental and historical drivers related to latitudinal variation in species richness and phylogenetic diversity of Atlantic Forest endemic *** implemented species distribution models,from voucherbased locality points,to map the snake ranges and *** used generalized additive mixed models to evaluate the relationships among the diversity metrics and area,topographical roughness,and past climate change velocity since the Last Maximum Glacial in the Atlantic Forest latitudinal *** to the expected general pattern,species richness was higher toward higher latitudes,being pos.tively related to past climatic *** richness also increased with total area and higher topographical *** diversity,on the other hand,showed oppos.te relationships related to the same *** diversity increased with lower climatic stability in lower ***,dimensions of diversity were affected in different ways by historical and environmental constraints in this unique and threatened biodiversity hotspot.

关键词： biodiversity latitudinal gradient neotropical region phylogenetic diversity serpents species richness.

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Maize (Zea mays L.) and Cotton (Gossypium hirsutum L.) Straw Decompos.tion in Soil: Effect of Straw Placement, Mineral Nitrogen and Tillage

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Pedosphere 2002年第4期12卷 353-364页

作者： j.CHILIMA College of Natural Resources and Environment Zhejiang University Hangzhou 310029 College of Natural Resources and Environment Zhejiang University Hangzhou 30029

With the present understanding that decompos.ng straw may not onlyaffect soil properties, but pos. sibly greenhouse gas emissions aswell, focus among environmental researchers has gradually expanded toinclude understanding of decompos.tion rate and stability of straw ofdifferent plants in different soils under different managementconditions. Against such a background, a short-term (60 days)greenhouse simulation experiment was carried out to study the effectsof straw placement, external mineral N source and tillage on strawdecompos.tion of maize and cotton in two contrasting soils, a redsoil (Ferrasol) and a black soil (Acrisol).

关键词： cotton maize mineral N straw decompos.tion

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Genome-wide SNP Genotyping Resolves Signatures of Selection and Tetrasomic Recombination in Peanut

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Molecular Plant 2017年第2期10卷 309-322页

作者： josh Clevenger Ye Chu Carolina Chavarro Gaurav Agarwal David j. Bertioli Soraya C.M. LeaI-Bertioli Manish K. Pandey justin Vaughn Brian Abernathy Noelle A. Barkley Ran Hovav mark Burow Spurthi N. Nayak Annapurna Chitikineni Thomas G. Isleib C. Corley Holbrook Scott A. jackson Rajeev K. Varshney Peggy Ozias-Akins Department of Horticulture and Institute of Plant Breeding Genetics & Genomics The University of Georgia 2356 Rainwater Road Tifton GA 31793 USA Center for Applied Genetic Technologies and Institute of Plant Breeding Genetics & Genomics The University of Georgia Athens GA 30602 USA International Crops Research Institute for the Semi-Arid Tropics (ICRISAT) Hyderabad 502324 India University of Brasilia Institute of Biological Sciences Campus Darcy Ribeiro 70910-900 Brasilia DF Brazil Embrapa Genetic Resources and Biotechnology 70770-917 Brasflia DF Brazil eUSDA-ARS PGRCU Griffin GA 30223 USA Agricultural Research Organization Plant Sciences Institute 7528809 Rishon LeZion Israel Department of Plant and Soil Science Texas Tech University Lubbock TX 79409-2122 USA Department of Crop and Soil Sciences North Carolina State University Box 7629 Raleigh NC 28695-7629 USA USDA-ARS Tifton GA 31793. USA

Peanut （Arachis hypogaea; 2n = 4x = 40） is a nutritious food and a good source of vitamins, minerals, and healthy fats. Expansion of genetic and genomic resources for genetic enhancement of cultivated peanut has gained momentum from the sequenced genomes of the diploid ancestors of cultivated peanut. To facil- itate high-throughput genotyping of Arachis species, 20 genotypes were re-sequenced and genome-wide single nucleotide poiymorphisms （SNPs） were selected to develop a large-scale SNP genotyping array. For flexibility in genotyping applications, SNPs polymorphic between tetraploid and diploid species were included for use in cultivated and interspecific populations. A set of 384 accessions was used to test the array resulting in 54 564 markers that produced high-quality polymorphic clusters between diploid species, 47 116 polymorphic markers between cultivated and interspecific hybrids, and 15 897 polymorphic markers within A. hypogaea germplasm. An additional 1193 markers were identified that illuminated genomic re- gions exhibiting tetrasomic recombination. Furthermore, a set of elite cultivars that make up the pedigree of US runner germplasm were genotyped and used to identify genomic regions that have undergone pos. itive selection. These observations provide key insights on the inclusion of new genetic diversity in culti- vated peanut and will inform the development of high-resolution mapping populations. Due to its efficiency, scope, and flexibility, the newly developed SNP array will be very useful for further genetic and breeding applications in Arachis.

关键词： single nucleotide polymorphism groundnut Arachis hypogaea

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Spectroscopic investigations on Yb^3+ doped and Pr^3+/Yb^3+ codoped tellurite glasses for photonic applications

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journal of Rare Earths 2021年第1期39卷 33-42,I0002页

作者： M.Seshadri M.j.V.Bell V.Anjos Y.Messaddeq Grupo de Engenharia e Espectroscopia de Materiais Departamento de Fisica-ICEUniversidade Federal de Juiz de ForaJuiz de ForaMG36036-900Brazil Centre d'Optique Photonique et Laser2375 Rue de la TerrasseUniversite LavalQuebecQCG1V 0A6Canada

In this work we repo rt on structural and spect roscopic properties of Yb^3+doped and Pr^3+/Yb^3+co-doped TeO2-Bi2 O3-ZnO-Li2 O-Nb2 O5(TBZLN)tellurite *** and stretching modes of TeO2 and Te-OH bond(strong and weak)were analysed from the deconvolution of observed Raman and FT-IR *** on the absorption measurements,the energy bands of Yb^3+and Pr^3+ions are *** spectroscopic properties for the radiative transitions of Yb^3+and Pr^3+ions were reported using McCumber and judd-Ofelt *** emission bands originating from 3 P1 and 3 P0 to lower lying levels of Pr^3+were registered under 447 nm *** emission band around 1334 nm assigned to the Pr3:1 G4→3 H5 was observed when excited at 980 *** stimulated emission cross-section(σemi(λ))and effective linewidth(Δλeff)for the 3 P1→3 H6,3 P1→3 H5,3 P0→3 H6,3 P0→3 F2,3 P1→3 F3,3 P1→3 F4,3 P0→3 F4 and 1 G4→3 H5 transitions of Pr^3+are *** luminescence in Pr^3+/Yb^3+codoped glass upon 980 nm excitation was *** resonant transfer processes between Yb^3+and Pr^3+ions are presented and *** chromaticity co-ordinates were also evaluated from the visible emission spectra showing that Pr^3+/Yb^3+co-doped glass may be suitable for the development of yellow-orange(λexc=447 nm)and near white light(λexc=980 nm)emitting devices in photonics.

关键词： Rare earth ions Tellurite glass Spectroscopic properties Upconversion luminescence

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Vibration analysis of axisymmetric functionally graded viscothermoelastic spheres

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Acta Mechanica Sinica 2014年第1期30卷 100-111页

作者： D.K.Sharma j.N.Sharma S.S.Dhaliwal V.Walia Department of Mathematics Sant Longowal Institute of Engineering and Technology Department of Mathematics National Institute of Technology

The present study focuses on the analysis of free vibrations of axisymmetric functionally graded hollow spheres. The material is assumed to be graded in radial di- rection with a simple power law. Matrix Frrbenious method of extended power series is employed to derive the analytical solutions for displacement, temperature, and stresses. The dispersion relations for the existence of various types of pos. sible modes of vibrations in the considered hollow sphere are derived in a compact form. In order to explore the character- istics of vibrations, the secular equations are further solved by using fixed point iteration numerical technique with the help of MATLAB software. The numerical results have been presented graphically for polymethyl methecrylate materials in respect of natural frequencies, frequency shift, inverse quality factor, displacement, temperature change, and radial stress.

关键词： Functionally graded Stresses Vibrations Fr6benius - Dispersion - Spherical structures

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LE PROBLME DE DIRICHLET POUR LES QUATIONS HYPERBOLIQUES

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中国数学会学报 1937年第1期 6-20页

作者： j.HADAMARD Université Tsing-Hua Pékin

Après avoir constatéque le problème de Cauchy qui se pos.naturellement pour les équations Iinéaires aux dérivées partielles àcaractéristiques réelles(dn moins pour le type “normal”,le seul quiintervienne en Physique mathématique),est au contraire impos.ibleen général pour les équations àcaractéristiques imaginaires,il étaitnaturel de rechercher,inversement,si le problème de Dirichletest correctement pos. pour les équ ions du type hyperbolique,parexemple,pour léquation àdeux variables independantes (àlaquel nousnous bornerons)

关键词： der LE PROBL ME DE DIRICHLET POUR LES QUATIONS HYPERBOLIQUES

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Kinetics and thermodynamic studies of Methyl Orange removal by polyvinylidene fluoride-PEDOT mats

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journal of Environmental Sciences 2021年第2期33卷 62-73页

作者： Romario j.da Silva Lizeth Carolina Mojica-Sanchez Filipe D.S.Gorza Graciela C.Pedro Bruna G.Maciel Gabriela P.Ratkovski Herica D.daRocha Kamila T.O.do Nascimento juan CMedina-Llamas Alicia E.Chavez-Guajardo jose j.Alcaraz-Espinoza Celso P.de Melo Program a de pos.Graduagao em Ciencia de Materials U niversidade Federal de Pernambuco50670-901 RecifePEBrazil Departamento de Ffsica Uniuersidade Federal de Pemambiico50670-901 Reci/ePEBrazil Centro de Estudios Cientificosy Tecnologicos No.18 Instituto Politecnico Nacional98160 ZacatecasZacMexico Unidad Academica de Ciencias de la Tierra Uniuersidad Aut6noma de Zacatecas98058 ZacatecasZacMexico Departamento de Quimica Universidad Autonoma Metropolitana09340Ciudad de MexicoMexico

We report the preparation of poly(3,4-ethylene dioxythiophene)(PEDOT)-modified polyvinylidene fluoride electrospun fibers and their use as a novel adsorbent material for the removal of the anionic dye Methyl Orange(MO)from aqueous *** novel adsorbent material can be used to selectively remove MO on a wide p H range(3.0-10.0),with a maximum capacity of 143.8 mg/g at p H *** used in a recirculating filtration system,the maximum absorption capacity was reached in a shorter time(20 min)than that observed for batch mode experiments(360 min).Based on the analyses of the kinetics and adsorption isotherm data,one can conclude that the predominant mechanism of interaction between the membrane and the dissolved dye molecules is ***,considering the estimated values for the Gibbs energy,and entropy and enthalpy changes,it was established that the adsorption process is spontaneous and occurs in an endothermic *** good mechanical and environmental stability of these membranes allowed their use in at least 20 consecutive adsorption/desorption cycles,without significant loss of their *** suggest that the physical-chemical characteristics of PEDOT make these hybrid mats a promising adsorbent material for use in water remediation protocols and effluent treatment systems.

关键词： Electrospinning Compos.te mats Pedot Pvdf mats Dye removal Water remediation

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Tropical forest canopies and their relationships with climate and disturbance： results from a global dataset of consistent field-based measurements

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Forest Ecosystems 2018年第1期5卷 77-90页

作者： marion pfeifer alemu gonsamo william woodgate luis cayuela andrew r.marshall alicia ledo timothy c.e.paine rob marchant andrew burt kim calders colin courtney-mustaphi aida cuni-sanchez nicolas j.deere dereje denu jose gonzalez de tanago robin hayward alvaro lau manuel j.macía pieter i.olivier petri pellikka hamidu seki deo shirima rebecca trevithick beatrice wedeux charlotte wheeler pantaleo k.t.munishi thomas martin abdul mustari philip j.platts school of natural and environmental sciences newcastle universityUpon TyneNewcastle NE1 7RUUK department of geography and planning university of torontoONCanada land and water commonwealth scientific and industrial research organisationYarralumlaACTAustralia school of mathematical and geospatial sciences rmit universityGPO Box 2476VMelbourneVIC 3001Australia department of biology geologyphysics and inorganic chemistryuniversidad rey juan carlosE-28933 MostolesMadridSpain tropical forest and peopleresearch centre university of the sunshine coastsippy DownsAustralia environment department university of yorkYorkUK flamingo land ltd. MaltonUK the institute of biological and environmental sciences environmental modelling groupuniversity of aberdeenAberdeenUK biological and environmental sciences university of stirlingStirling FK9 4L AUK york institute for tropical ecosystems environment departmentuniversity of yorkYork YO10 5NGUK department of geography university college londonGower StreetLondon WC1E 6BTUK earth observation climate and optical groupnational physical laboratoryHampton RoadTeddingtonMiddlesex TW11 0LWUK department of archaeology and ancient history uppsala universitetP.O.Box 256-751 05 UppsalaSESweden center for macroecology evolution and climateuniversity of copenhagenUniversitetsparken 152100 CopenhagenDKDenmark durrell institute of conservation and ecology(dice) school of anthropology and conservationuniversity of kentCanterbury CT2 7NRUK department of biology college of natural sciencesjimma universityJimmaEthiopia wageningen university&research laboratory of geo-information science and remote sensingDroevendaalsesteeg 36708 PB Wageningenthe Netherlands center for international forestry research(cifor) Situ GedeSindang BarangBogor 16680Indonesia departamento de biología área de botánicauniversidad autónoma de madridcalle Darwin 2-28049 MadridESSpain conservation ecology research unit university of pretoriaHatfieldPretoriaSouth Af

Background： Canopy structure, defined by leaf area index （LAI）, fractional vegetation cover （FCover） and fraction of absorbed photosynthetically active radiation （fAPAR）, regulates a wide range of forest functions and ecosystem services. Spatially consistent field-measurements of canopy structure are however lacking, particularly for the tropics. Methods： Here, we introduce the Global LAI database： a global dataset of field-based canopy structure measurements spanning tropical forests in four continents （Africa, Asia, Australia and the Americas）. We use these measurements to test for climate dependencies within and across continents, and to test for the potential of anthropogenic disturbance and forest protection to modulate those dependences. Results： Using data collected from 887 tropical forest plots, we show that maximum water deficit, defined across the most arid months of the year, is an important predictor of canopy structure, with all three canopy attributes declining significantly with increasing water deficit. Canopy attributes also increase with minimum temperature, and with the protection of forests according to both active （within protected areas） and passive measures （through topography）. Once protection and continent effects are accounted for, other anthropogenic measures （e.g. human population） do not improve the model. Conclusions： We conclude that canopy structure in the tropics is primarily a consequence of forest adaptation to the maximum water deficits historically experienced within a given region. Climate change, and in particular changes in drought regimes may thus affect forest structure and function, but forest protection may offer some resilience against this effect.

关键词： Leaf area index Fractional vegetation cover Fraction of absorbed photosynthetically active radiation,Human population pressure Protected areas Drought Climate change

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The effects of fabrication atmosphere condition on the microstructural and mechanical properties of laser direct manufactured stainless steel 17-4 PH

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journal of Materials Science & Technology 2019年第7期35卷 1315-1322页

作者： D.Wang C.T.Chi W.Q.Wang Y.L.Li M.S.Wang X.G.Chen Z.H.Chen X.P.Cheng Y.j.Xie Institute of Applied Physics Jiangxi Academy of SciencesNanchang 330029China Institute of Metal Research Chinese Academy of SciencesShenyang 110016China School of Mechanical and Electrical Engineering Nanchang UniversityNanchang 330029China jiangxi Reman Additive Technology Co. Ltd Nanchang 330096China

The effects of atmosphere conditions on microstructural and mechanical properties of stainless steel 17-4PH components fabricated by laser direct manufacturing (LDM) were investigated through mea-surements on phase constitution, porosity, tensile strength, fracture morphology, hardness and evolution of substrate temperature. Results showed that the samples produced in air atmosphere condition pos.sessed higher tensile strength and hardness for both as-depos.ted and heat-treated states than that in Ar chamber condition, due to dispersion strengthening effect of amorphous oxide particles and nitrogen solution strengthening as a result of higher content of oxygen and nitrogen. The temperature of substrate heat accumulation was higher in Ar chamber condition, leading to dramatically lower porosity and more reverse austenite, which also contributed to the lower strength and hardness.

关键词： Additive manufacturing Laser direct manufacturing 17-4 PH stainless steel Fabrication atmosphere Mechanical properties

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Influence of ZnO nanoparticles on the microstructure of a CoCrFeMoNi matrix via powder metallurgy

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International journal of Minerals,Metallurgy and Materials 2019年第11期26卷 1467-1476页

作者： C.D.Gómez-Esparza A.Duarte-Moller C.López-Díaz de León R.Martínez-Sánchez j.F.Hernández-Paz C.A.Rodríguez-González centro de investigación en materiales avanzados(cimav) laboratorio nacional de nanotecnologíamiguel de cervantes no.120chihuahua 31136chi8.mexico facultad de ingeniería civil mecánica e industrialuniversidad de la salle bajíoav.universidad 602león 37150gto.mexico instituto de ingeniería y tecnología universidad autónoma de ciudad juárez(uacj)av.del charro 450 nortec4.juárez 32310chi8.mexico

In the last decade,extensive research has been carried out on the microstructural behavior of high-entropy alloys(HEA),for which the in-situ formation of nanoparticles has been ***,studies of the incorporation of nanoparticles in HEA have been rarely *** this work,the addition of zinc oxide nanoparticles(ZnO NP)as reinforcement in a CoCrFeMoNi high-entropy alloy matrix,as well as the morphological,structural,and microstructural evolution of compos.tes synthesized via powder metallurgy,were *** electron microscopy and X-ray diffraction analysis were performed in order to study the microstructural and phase characterization of the *** sintering,it was found that the ZnO NP addition(0.5 wt%,1 wt%and 2 wt%)had a significant influence on the microstructure and hardness of the CoCrFeMoNi high-entropy *** bonding among metal particles was promoted with the additions of Zn O NP.A reduction in porosity as a function of ZnO NP content was also *** microhardness results showed that the compos.te reached its highest reinforcement in bulk samples with 1 wt%ZnO NP(HV 870),which represented a 20%improvement over the unreinforced HEA matrix.

关键词： high-entropy alloy mechanical alloying nanoparticles compos.tes

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