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定向凝固Al−6%Cu−5%Ni合金的显微组织特征和力学、电化学行为

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Transactions of Nonferrous Metals society of China 2021年第6期31卷 1529-1549页

作者： Adilson Vitor RoDRIGUEs Thiago soares LIMA Talita Almeida VIda Crystopher BRITo Amauri GARCIA Noé CHEUNG Department of Manufacturing and Materials Engineering University of Campinas-UNICAMPCampinasSP13083-860Brazil Federal Institute of Education Science and Technology of São Paulo-IFSPBragança PaulistaSP12903-600Brazil são Paulo state University-UNEsP Campus of São João da Boa VistaSão João da Boa VistaSP13876-750Brazil

在Al−6%Cu合金中添加5.0%Ni(质量分数),研究其对合金凝固时的冷却速率(T)和生长速率(V_(L)),显微组织中枝晶长度、金属间化合物(IMCs)的形貌和分布,以及最终性能的影响。研究在大冷却速率范围内制备的定向凝固Al−6%Cu−5.0%Ni合金铸锭沿... 详细信息

在Al−6%Cu合金中添加5.0%Ni(质量分数),研究其对合金凝固时的冷却速率(T)和生长速率(V_(L)),显微组织中枝晶长度、金属间化合物(IMCs)的形貌和分布,以及最终性能的影响。研究在大冷却速率范围内制备的定向凝固Al−6%Cu−5.0%Ni合金铸锭沿长度方向的耐腐蚀性和拉伸性能。推导出一次枝晶间距(λ_(1))和二次枝晶间距(λ_(2))随T和V_(L)的演变规律。采用Hall−Petch公式计算沿铸件长度方向的断后伸长率(δ)和极限抗拉强度(σ_(U))与λ_(1)^(−1/2)的关系。在合金成分中添加Ni的强化效果优于细化枝晶组织的强化效果。在较高T下凝固的样品中形成细小的IMCs,且均匀分布在枝晶间,这种典型的显微组织使样品具有最高的耐腐蚀性。

关键词： Al−Cu−Ni合金铸态显微组织枝晶间距拉伸强度耐腐蚀性

The role of environmental temperature on movement patterns of giant anteaters

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Integrative Zoology 2022年第2期17卷 285-296页

作者： Aline GIRoUX Zaida oRTEGA Alessandra BERTAssoNI Arnaud Léonard Jean DEsBIEZ danilo KLUYBER Gabriel Favero MAssoCATo Guilherme DE MIRANda Guilherme MoURÃo Luciana sURITA Nina ATTIAs Rita de Cassia BIANCHI Vinícius Peron de oliveira GAsPARoTTo Luiz Gustavo Rodrigues oLIVEIRA-sANTos Ecology Department Federal University of Mato Grosso do Sul(UFMS)Campo GrandeMato Grosso do SulBrazil Post Graduate Program of Ecology and Evolution Federal University of Goiás(UFG)GoiâniaGoiásBrazil Institute of Research and Conservation of Anteaters in Brazil(PRoJETo TAMANDUÁ) ParnaíbaPiauíBrazil Institute for the Conservation of Wild Animals(ICAs) Campo GrandeMato Grosso do SulBrazil Royal Zoological society of scotland(RZss) MurrayfieldEdinburghUK Institute for Ecological Research(IPÊ) NazaréPaulistaSão PauloBrazil Naples Zoo at Caribbean Gardens NaplesFloridaUSA The Houston Zoo HoustonTexasUSA National Institute of Criminalistics-Federal Police BrasíliaBrazil Embrapa Pantanal CorumbáMato Grosso do SulBrazil Natural Resources Graduate Program(PRoNAT)-Federal University of Roraima(UFRR) Boa VistaRoraimaBrazil Animal Biology Graduate Program Federal University of Mato Grosso do Sul(UFMS)Campo GrandeMato Grosso do SulBrazil Animal Biology Department São Paulo State University(UNESP)São Josédo Rio PretoSão PauloBrazil Department of Preventive Veterinary Medicine and Animal Health School of Veterinary MedicineUniversity of São Paulo(USP)São PauloSPBrazil Brazilian Institute for Conservation Medicine(TRÍADE) RecifePernambucoBrazil

Mammals can show conspicuous behavioral responses to thermal variation,including changes in movement *** used an integrative approach to understand how environmental temperature can drive the movement behavior of a mammal with low capacity for physiological thermoregulation,the giant anteater(Myrmecophaga tridactyla).We tracked 52 giant anteaters in 7 areas throughout the Brazilian *** estimated the distance moved,area used,use of forest areas,and mean environmental temperature for each monitoring day of each *** modeled these data with Mixed structural Equations—considering the possible interactions between our variables and controlling for sex and body *** anteaters reduced displacement and increased forest use with decreasing environmental temperature,probably because of their low body heat *** is possible that they reduce distance moved and area used by reducing the duration of *** decreasing temperature,forest habitats become warmer than open ones,besides buffer rain and chilly *** displacement and using forests are important strategies to reduce body heat loss and the energetic costs of ***,decreasing movement can limit food access and,consequently,***,we highlight the importance of forests as thermal *** increasing frequency and intensity of extreme weather events,we showed the need to preserve forest patches to offer suitable conditions for tropical mammals’behavioral *** this context,policies favoring deforestation on Brazilian territory are especially ***,we emphasize the need of integrative approaches to understand the complex interactions between organisms and the environment.

关键词： behavioral thermoregulation biologging habitat use mixed structural equations movement ecology

Distinguishing the Regional Atmospheric Controls on Precipitation Isotopic Variability in the Central-southeast Portion of Brazil

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Advances in Atmospheric sciences 2022年第10期39卷 1693-1708,I0018-I0020页

作者： Vinícius dos sANTos Peter MARsHALL FLEMING Luís HENRIQUE MANCINI stela daLVA sANTos CoTA Graziele Beatriz de LIMA Rafaela RoDRIGUEs GoMEs Roberto Eduardo KIRCHHEIM Ricardo sANCHÉZ-MURILLo Didier GAsTMANs são Paulo state University(UNEsP) Environmental Studies Center.Av.24ABased1515-Bela Vista13.506-900Rio Claro(SP)Brazil Center for the Development of the Nuclear Technology(CDTN-CNEN) Av.Presidente Antônio Carlos6.627Campus da UFMG-Pampulha31270-90Belo Horizonte(MG)Brazil Universidade de Brasília-UnB Instituto de GeociênciasLaboratório de Isótopos Estáveis.Campus"Darcy Ribeiro"Asa Norte70.910-900Brasília(DF)Brasil Hydrology and Territorial Management Directory(DHT) The Geological Survey of Brazil(CPRM-SGB)São Paulo(SP)Brazil University of Texas at Arlington Earth and Environmental Sciences Department500 Yates StreetArlingtonTexas76019USA stable Isotopes Research Group and Water Resources Management Laboratory Universidad NacionalHerediaCosta Rica

Precipitation isotope ratios(o and H)record the history of water phase transitions and fractionation processes during moisture transport and rainfall ***,we evaluated the isotopic composition of precipitation over the central-southeastern region of Brazil at different *** isotopic compositions were associated with classical effects(rainfall amount,seasonality,and continentality),demonstrating the importance of vapor recirculation processes and different regional atmospheric systems(south American Convergence Zone-sACZ and Cold Fronts-CF).While moisture recycling and regional atmospheric processes may also be observed on a daily timescale,classical effects such as the amount effect were not strongly correlated(δ^(18)o-precipitation rate r≤-0.37).daily variability revealed specific climatic features,such asδ^(18)o depleted values(~-6‰to-8‰)during the wet season were associated with strong convective activity and large moisture *** isotopic analysis revealed the role of different moisture sources and transport *** ratios combined with d-excess explain how atmospheric recirculation processes interact with convective activity during rainfall formation *** findings provide a new understanding of rainfall sampling timescales and highlight the importance of water isotopes to decipher key hydrometeorological processes in a complex spatial and temporal context in central-southeastern Brazil.

关键词： precipitation stable water isotopes d-excess moisture source and transport southern Atlantic ocean and Amazon

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中国辽西两件长尾翼龙的简单注释(英文)

地球学报 2010年第S1期31卷 36-37页

作者： Alexander W.A.KELLNER setor de Paleovertebrados Museu Nacional/UFRJQuinta da Boa Vista s/n.So CristóvoRio de JaneiroCEP:20940-040Fellow CNPq and FAPERJ

Pterosaur diversity in China has increased tre-mendously in the last two decades particularly due to discoveries made in deposits of western Liaoning.

关键词：辽西翼龙长尾注释简单

species richness and similarity of the flora on four lajedos in boa Nova, Bahia, Brazil

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journal of Mountain science 2023年第6期20卷 1526-1539页

作者： Morgana Maria Do CARMo BARBosA Anderson FERREIRA PINTo MACHADo Andrea Karla ALMEIda Dos sANTos Raymundo joséDE sá-NETo Michele MARTINs CoRRêA Graduate Program in Environmental sciences State University of Southwest BahiaUniversity Campus“Juvino Oliveira”BR 415km 0445700-000ItapetingaBahiaBrazil secretary of Education of the state of Bahia Military Police College Eraldo TinocoBrasilia Avenue273Kadija45650-120Vitoria da ConquistaBahiaBrazil Mongoyós Herbarium Multidisciplinary Institute in HealthCampus Anísio TeixeiraFederal University of BahiaRua Hormindo Barros58Bairro Candeias45029-094Vitoria da ConquistaBahiaBrazil Department of Natural sciences State University of Southwest BahiaEstrada do Bem Querers/nBairro Candeias45083-900Vitoria da ConquistaBahiaBrazil

The municipality of boa Nova,in northeastern Brazil,is in an ecotone zone between the Caatinga and Atlantic Forest phytogeographic *** transition phytophysiognomy is seasonal forest and known locally as mata de cipó.In these phytophysiognomies there are lajedos,which are rock outcrops colonized by vegetation welladapted to extreme microclimatic variation and vegetation diversity is affected by the vegetation types of the surrounding *** to the singularity of these environments and the relevance of floristic studies for conservation,this work aimed to identify the species richness and compare the similarity of the flora on four rock outcrops in boa *** flora was surveyed during exploratory walks along lajedos between 2016 and *** total,162 species were identified on the boa Nova *** flora has a composition and structure similar to semiarid outcrops,as well as endemic species that also occur in surrounding *** the proximity,a similarity index revealed there is floristic dissimilarity between the *** new occurrences were recorded for the region,five species are threatened with extinction(Aosa gilgiana,Ficus cyclophylla,Hippeastrum stigmovittatum,Pleroma caatingae and Trixis pruskii),and 43 species are common in anthropogenic *** reinforces the importance of actions to conserve these areas.

关键词： Ecotone Flora Inselberg Rock outcrops semiarid similarity

Food and Nutritional security in the Refugee Women’s Life Narratives

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Food and Nutrition sciences 2023年第11期14卷 1031-1042页

作者： Juliana Vidal Vieira Guerra Valdecyr Herdy Alves Brenda Caroline Martins da silva Tatiana do socorro dos santos Calandrini Giovanna Rosario soanno Marchiori Ediane de Andrade Ferreira Maria Bertilla Lutterbach Riker Branco Diego Pereira Rodrigues Departamento de Nutriç &#227o Aplicada Instituto de Nutri&#231&#227o Universidade do Estado do Rio de Janeiro Rio de Janeiro Brasil Programa Acadêmico em Ciências do Cuidado em saúde Escola de Enfermagem Aurora de Afonso Costa Universidade Federal Fluminense Niterói Brasil Instituto de Ciências da saúde Universidade Federal do Pará Belém Brasil Centro de Ciências da saúde Universidade Federal de Roraima Boa Vista Brasil

objective: To understand, based on the life narratives of refugee women, food and nutritional security. Method: Qualitative, descriptive, exploratory study, Narratives of life method, by daniel Bertaux. Conducted with 11 participants, refugee women residing in the state of Rio de Janeiro, Brazil. Results: The meanings and feelings evidenced in the life narratives of refugee women expressed the insecurities and weaknesses with food in the resettlement. Final Considerations: Given the meanings and feelings regarding food in the refuge, it is expected that the present study will contribute to the elaboration of new action plans and intersectoral public policies of agile action to meet the demands of the refugee population, in the attempt to mitigate starvation, poverty, social differences and the compromised health status of the refugee population.

关键词： Food security Feeding Behavior Refugees Human Migration Human Right to Adequate Food

Application of Extended Multiplicative signal Correction to short-Wavelength near Infrared spectra of Moisture in Marzipan

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journal of data Analysis and Information Processing 2013年第3期1卷 30-34页

作者： Pedro dos santos Panero Francisco dos santos Panero joao dos santos Panero Henrique Eduardo Bezerra da silva campus Novo Paraiso Instituto Federal de EducacaoCiencia e Tecnologia de RoraimaBoa VistaBrazil Instituto Federal de Educacao Ciencia e Tecnologia de RoraimaBoa VistaBrazil Departamento de Engenharia Eletrica Universidade Federal de RoraimaBoa VistaBrazil Departamento de Quimica Universidade Federal de RoraimaBoa VistaBrazil

short-wavelength near infrared spectroscopy (sW-NIR) is a very rapid, versatile and precise technique, which can be used in many different situations and for very types of products and chemical compounds. Extended multiplicative signal correction (EMsC) is a modification of the standard MsC pre-processing method that allows the separation of physical light scattering effects from chemical (vibrational) light absorbance effects in spectra. In this paper, the EMsC is applied and compared with first derivate, second derivate, MsC and sNV in combination of PLsR to obtain robust models in terms of accuracy and predict ability with a reduced calibration data set using sW-NIR spectra of moisture in marzipan. The Extended Multiplicative signal Correction—EMsC and combination methods provide the best results in terms of prediction ability and calibration sW-NIR spectra of moisture in marzipan. The best classification results were obtained by Extended Multiplicative signal Correction followed by second derivates.

关键词： EMsC PLsR sW-NIR Extended Multiplicative signal Correction Chemometrics

Taenidium barretti ichnofabric and rainfall seasonality:Insights into dryland suites of scoyenia ichnofacies

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journal of Palaeogeography 2023年第1期12卷 28-49页

作者： Diego Luciano Nascimento Renata Guimaraes Netto Alessandro Batezelli Francisco sergio Bernardes Ladeira daniel sedorko ICHNos Research Group Geology Graduate ProgramUnisinos UniversityAv.Unisinos95010 Sao LeopoldoRS93022-750Brazil Campinas state University Geology and Natural Resources DepartmentZeferino Vaz University CityBarao GeraldoCampinasSP13083-970Brazil Laboratory of Pedology(LABPED) Department of GeographyGeosciences InstituteGeosciencesState University of CampinasCampinasSP13083-855Brazil Museu Nacional Departamento de Geologia e PaleontologiaUniversidade Federal do Rio de Janeiro.Horto BotanicoParque Quinta da Boa VistaR.Gen.Herculano Gomes1340Sao CristovaoRio de JaneiroRJ20940-040Brazil

The present work analyzes the monotypic Taenidium barretti ichnofabric developed in abandoned channels and floodplains to understand its paleoecological significance in highly seasonal fluvial *** data come from the Cretaceous paleosols of the Marília Formation(Bauru Basin,sE Brazil),in which the *** ichnofabric and rhizoliths represent the biotic *** larvae are considered to be the most likely *** tracemakers in these *** intensity and recurrence of bioturbation suggest that the windows of opportunity for beetle population growth were very short and controlled by the progressive substrate desiccation after flood *** characteristics of the trace fossil assemblage suggest soil colonization by r-strategic organisms triggered by flooding events that provided the resource inputs necessary for their living during rainy *** results also show that in fluvial systems with high discharge variations,the boundaries between a“pre-desiccation suite”and a“desiccation suite”in the scoyenia ichnofacies can be diffuse due to the short duration of colonization windows and progressive terrestrialization of floodplains and ***,the frequency of flooding events,the lowered water table,and the rapidity of substrate desiccation constrained colonization by other burrowers and may be considered as firstorder factors controlling the generation of a monotypic *** ***,the monotypic Taenidium ichnofabric in the scoyenia ichnofacies context is an ichnomarker of brief windows for colonization in highly seasonal environments.

关键词： Ichnology Paleopedology Continental ichnofacies Meniscate burrows Ichnofabric

Control of inherited structural fabric on the development and exhumation of passive margins-Insights from the Araçuaíorogen(Brazil)

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Geoscience Frontiers 2023年第6期14卷 30-48页

作者： Ana Fonseca Tiago Novo Tobias Fonte-boa Matheus Kuchenbecker daniel Galvão Carnier Fragoso daniel Peifer Antônio Carlos Pedrosa-soares johan De Grave Laboratory for Mineralogy and Petrology Department of GeologyGhent UniversityKrijgslaan 281 S89000 GhentBelgium Universidade Federal de Minas Gerais Programa de Pós-Graduação em GeologiaCPMTC-IGCCampus PampulhaBelo HorizonteMGBrazil Centro de Pesquisas Professor Manoel Teixeira da Costa Instituto de GeociênciasUniversidade Federal de Minas GeraisBelo HorizonteBrazil Universidade Federal dos Vales do Jequitinhonha e Mucuri Instituto de Ciência e TecnologiaCentro de Estudos em GeociênciasLaboratório de Estudos TectônicosDiamantinaBrazil Petrobras Rio de JaneiroRJBrazil Instituto de Geociências Universidade Federal do Rio Grande do SulPorto AlegreRSBrazil Department of Geosciences University of TübingenSchnarrenbergstr.94-9672076 TübingenGermany

The Araçuaíorogen,in eastern Brazil,was formed during the Neoproterozoic–Cambrian amalgamation of West *** the Mesozoic–Cenozoic opening of the south Atlantic ocean,and the associated divergent tectonics,the orogen developed as basement to the passive margin of south America and was progressively covered by thick offshore sedimentary basins,particularly the Espírito santo,Mucuri,and Cumuruxatiba basins,in which hydrocarbon systems have been *** understanding of the Araçuaíorogen’s passive margin evolution,erosion,and sediment transfer to these basins ultimately depends on constraining the onshore exhumation in response to Mesozoic–Cenozoic ***,new and previously published data from apatite fission-track(AFT)analyses and inverse thermal history modelling of(Pre)Cambrian basement rocks from the Araçuaíorogen resolve three discrete basement cooling and associated erosional exhumation *** the Pre-Rift phase,Jurassic–Hauterivian erosion of the Araçuaíorogen is most likely related to the adjoining intra-continental West Gondwana flexural subsidence,which increased hillslope and river erosion *** the Rift and Transitional phases,Barremian–Albian accelerated phase of erosion is associated with the uplift of the Atlantic rift shoulders and the establishment of an oceanic *** the Drift phase,reactivations in response to far-field stresses likely triggered a Late Cretaceous–Paleocene rapid erosion *** rates at which these events unfolded vary spatially and are controlled by inherited *** Araçuaíorogen experienced slower denudation rates in areas closer to the são Francisco Craton,which suggests that the tectonic reactivation and related surface uplift during the Mesozoic–Cenozoic is in first-order controlled by lithospheric ***,the structural framework of the Paramirim and Pirapora aulacogens and NE-oriented shear zones in the orogen’s southeast facilitated later *** the spati

关键词： Thermal history Denudation Tectonic inheritance Reactivations south Atlantic Hydrocarbons