Results 51 to 60 of about 33,626 (171)

Beach ridges, foredunes or transgressive dunefields? Definitions and an examination of the Torres to Tramandaí barrier system, Southern Brazil

open access: yesAnais da Academia Brasileira de Ciências, 2005
Many prograded barriers and some dunefields in theworld have been termed 'beach ridge' plains, but the actual genesis of the 'ridges' is often unknown. Use of the terms, berms, beach ridges and foredunes is also confusing in the literature because their ...
Patrick A. Hesp   +9 more
doaj   +1 more source

Tectonics and paleogeography of the Marajó Basin, northern Brazil

open access: yesAnais da Academia Brasileira de Ciências, 2002
The Marajó Basin area presents geologic and geomorphologic features chiefly due to the Mesozoic extension and post-Miocene neotectonics. The extension event with an Early and a Late Cretaceous phases originated four sub-basins that constitutes the Marajó
JOÃO B. S. COSTA   +4 more
doaj   +1 more source

Analysis of the Levels of Alteration of Aquifers Caused by the Installation of Wind Farms on Dunes on the Coast of Ceará, Brazil

open access: yesRevista Ambiente & Água, 2019
This research evaluated the levels of alteration of aquifers caused by installation of wind farms on dunes on the coast of Ceará, using the GOD and POSH methods of vulnerability, underground flow, and the application of multivariate analysis to subsidize
Maria da Conceição Rabelo Gomes   +3 more
doaj   +1 more source

Geotechnical properties of sediments of the Barreiras Formation in Rio Grande do Norte - Brazil

open access: yesGeotecnia, 2015
The Barreiras Formation is a geological unit of sedimentary nature that outcrops in a strip along approximately 4000 km in the Brazilian coast. In the Northeast Region, the Barreiras Formation supports multiple cities and their infrastructure. This study aimed to jointly review, summarize and interpret the various works done on the geotechnical aspects
Júnior, Olavo   +2 more
openaire   +1 more source

Efeitos dos inseticidas utilizados no controle de Bemisia tabaci (Gennadius) biótipo B e sua seletividade aos inimigos naturais na cultura da soja. [PDF]

open access: yes, 2017
RESUMO:Nas últimas safras a mosca-branca, Bemisia tabaci biótipo B (Hemiptera: Aleyrodidae) tornou-se praga de importância econômica para a cultura da soja devido à ocorrência de altas infestações e à dificuldade de controle desta praga.
BOFF, M. I. C.   +5 more
core   +1 more source

Caracterização elétrica de blocos varistores à base de SnO2 Electrical characteristics of SnO2-based varistor blocks

open access: yesCerâmica, 2012
Neste trabalho foi realizado um estudo das propriedades elétricas de blocos varistores à base de SnO2. Foram avaliadas a não linearidade destas cerâmicas por meio da caracterização tensão-corrente, bem como a altura, largura e os portadores de cargas por
R. L. Brito   +8 more
doaj   +1 more source

Physical activities and barriers reported by adolescents attending a health service [PDF]

open access: yes, 2011
This study characterized the physical activity and barriers reported by adolescents attending the Physical Education service of the Adolescent Care and Support Center, São Paulo, Brazil.
Fisberg, Mauro [UNIFESP]   +1 more
core   +2 more sources

Hidratação de ligantes na presença de matriz e aditivos Hydration of binders in the presence of matrix and additives

open access: yesCerâmica, 2007
Ligantes hidráulicos, como os cimentos de aluminato de cálcio e as aluminas hidratáveis, são os responsáveis pelo desenvolvimento de resistência mecânica de concretos refratários (desmoldagem) influenciando também as suas propriedades reológicas ...
I. R. Oliveira, V. C. Pandolfelli
doaj   +1 more source

PEDOTRANSFER FUNCTIONS FOR WATER RETENTION IN THE MAIN SOILS FROM THE BRAZILIAN COASTAL PLAINS

open access: yesCiência e Agrotecnologia, 2015
Pedotransfer functions (PTFs) are equations used to estimate soil characteristics difficult to determine from other easily obtained ones. Water retention in soil is used in several agronomic and environmental applications, but its direct determination is
Elidiane da Silva   +5 more
doaj   +1 more source

Hauts niveaux marins pléistocènes du littoral brésilien [PDF]

open access: yes, 1988
Sur les parties centrale et sud du littoral brésilien, le haut niveau marin correspondant au dernier interglaciaire a laissé d'importantes traces sous la forme de vastes terrasses sableuses. Les témoins du maximum, daté d'environ 123000 ans B.P.
Flexor, J.M., Martin, Louis, Suguio, K.
core  

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