Ar Ar Ages
Mostrando 1-12 de 26 artigos, teses e dissertações.
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1. Ediacaran emerald mineralization in Northeastern Brazil: the case of the Fazenda Bonfim Deposit
Abstract The Fazenda Bonfim emerald deposit lies within the Seridó Belt. It is a classic example of deposit formed through metasomatic interactions between Be-rich granite intrusions and Cr(± V)-rich mafic-ultramafic rocks. The setting of the emerald mineralization was built under strong strike-slip dynamics, which produced serpentinization and talcificati
Braz. J. Geol.. Publicado em: 13/01/2020
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2. Critérios para decanulação da traqueostomia: revisão de literatura
RESUMO Objetivo Realizar um levantamento bibliográfico a respeito da decanulação da traqueostomia para verificar os fatores e protocolos utilizados em estudos internacionais. Estratégia de pesquisa Estudo de revisão de literatura utilizando a base de dados PubMed com os descritores em língua inglesa “Tracheostomy”, “Weaning”, “Decannulation
CoDAS. Publicado em: 02/12/2019
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3. Geochronological systematics of the Huayna Potosí, Zongo and Taquesi plutons, Cordillera Real of Bolivia, by the K/Ar, Rb/Sr and U/Pb methods
Abstract The Huayna Potosi, Zongo and Taquesi are Triassic plutons located at the core of the Real Cordillera of Bolivia. In this paper, several Rb-Sr and K-Ar ages obtained in the past at the São Paulo Geochronology Laboratory, yet unpublished, will be presented, along with newer U-Pb Sensitive High-Resolution Ion Microprobe (SHRIMP) determinations made in
Braz. J. Geol.. Publicado em: 01/07/2019
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4. Dysfunctional breathing: what do we know?
RESUMO A disfunção respiratória (DR) é um quadro respiratório caracterizado por padrões respiratórios irregulares que ocorrem na ausência de doenças concomitantes ou secundariamente a doenças cardiopulmonares. Embora o principal sintoma seja frequentemente dispneia ou “fome por ar”, a DR também está associada a sintomas não respiratórios, c
J. bras. pneumol.. Publicado em: 11/02/2019
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5. Melanite-bearing nepheline syenite fragments and 40Ar/39Ar age of phlogopite megacrysts in conduit breccia from the Poços de Caldas Alkaline Massif (MG/SP), and implications
ABSTRACT: The Poços de Caldas Alkaline Massif, located in southeast Brazil, is composed of tinguaites, as well as phonolites and nepheline syenites (NeS), together with assorted pyroclastic rocks. The latter constitute deposits within the Vale do Quartel, and show fragments of alkaline rocks (NeS, tinguaites), basaltic and ultramafic volcanics/subvolvanics,
Braz. J. Geol.. Publicado em: 2018-06
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6. New age determinations for the Banhadão and Itapirapuã complexes in the Ribeira Valley, southern Brazil
ABSTRACT: New age determinations by Ar-Ar and U-Pb SHRIMP for the alkaline complexes of Banhadão and Itapirapuã that occur in the Ribeira Valley are in agreement with the previously radiometric K-Ar ages available in literature. Ar-Ar ages on biotite for Banhadão range in the 106-110 Ma interval, and suggest a minimum age of 106 Ma for the complex. Ar-Ar
Braz. J. Geol.. Publicado em: 08/03/2018
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7. Myosin Va is developmentally regulated and expressed in the human cerebellum from birth to old age
Myosin Va functions as a processive, actin-based motor molecule highly enriched in the nervous system, which transports and/or tethers organelles, vesicles, and mRNA and protein translation machinery. Mutation of myosin Va leads to Griscelli disease that is associated with severe neurological deficits and a short life span. Despite playing a critical role in
Braz J Med Biol Res. Publicado em: 2013-02
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8. Morfofisiologia do sistema genital masculino de ratos púberes e adultos após privação androgênica durante a pré-puberdade / Morphophysiology of male reproductive system of adult and pubertal rats after androgen deprivation during prepuberty
Endocrine disrupters are chemicals that can act as agonists or antagonists of endogenous hormones, interfering with the homeostasis of the organism. Since the endocrine system plays a critical role in the development and function of the male reproductive system, this is an especially vulnerable target of potential endocrine perturbations. The literature pres
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 06/02/2012
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9. Datação de processos diagenéticos em arenitos-reservatório de hidrocarbonetos : uma revisão conceitual
Geochronology has became a powerfull tool for diagenetic studies in siliciclastic rocks as it supply parameters for the definition of their depositional or diagenetic ages. This development occurred particularly in the last decades, with analytical techniques improvements and application of oil exploration. Sandstones are important hydrocarbon reservoir-rock
Publicado em: 2010
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10. Evolução tectono-estratigráfica e paleoclimática da formação maricá (Escudo Sul-Rio-Grandense, Brasil) : um exercício de geologia histórica e análise integrada de uma bacia sedimentar neoproterozóica
Significant improvement in the knowledge concerning the Neoproterozoic Maricá Formation of the Sul-riograndense Shield, southern Brazil, was obtained in the latest years. This contribution synthesizes recent data obtained though an integrated analysis of the lowermost unit of the “Camaquã Basin”. Stratigraphic and paleocurrent analyses, petrography, Sr
Publicado em: 2010
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11. Efeito do tratamento neonatal com 17- beta -estradiol sobre o penis de rato em diferentes idades : aspectos estruturais do orgão e expressão do receptor de androgeno pelas celulas musculares lisas e endoteliais in vitro / Effects of neonatal 17- beta -estradiol treatment on the rat penis at different ages : structural aspects of the organ and androgen receptor expression by smooth muscle cells and endothelial cells in vitro
Os hormônios androgênicos (testosterona e diidrotestosterona) regulam a diferenciação e o crescimento das estruturas penianas via receptor de andrógenos (AR), tendo este função reguladora da transcrição de genes relacionados a aspectos do desenvolvimento de indivíduos do sexo masculino. A presença de receptores de estrógenos no pênis permite ass
Publicado em: 2009
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12. A história do intemperismo na Província Borborema Oriental, Nordeste do Brasil: implicações paleoclimáticas e tectônicas
Until some years ago, weathering geochronology was primarily based on the K-Ar and 40Ar/39Ar dating of supergene minerals. Recent advances in the analysis of supergene goethite by the (U-Th)/He method expanded the number of suitable minerals for such purpose, as well as the time of application for weathering geochronology. This study represents the first sys
Publicado em: 2008