Slope Surface
Mostrando 13-24 de 153 artigos, teses e dissertações.
-
13. Water Erosion in Different Slope Lengths on Bare Soil
ABSTRACT Water erosion degrades the soil and contaminates the environment, and one influential factor on erosion is slope length. The aim of this study was to quantify losses of soil (SL) and water (WL) in a Humic Cambisol in a field experiment under natural rainfall conditions from July 4, 2014 to June 18, 2015 in individual events of 41 erosive rains in th
Rev. Bras. Ciênc. Solo. Publicado em: 09/03/2017
-
14. Aggregate Stability in Soil with Humic and Histic Horizons in a Toposequence under Araucaria Forest
ABSTRACT Aggregate stability is one of the most important factors in soil conservation and maintenance of soil environmental functions. The objective of this study was to investigate the aggregate stability mechanisms related to chemical composition of organic matter in soil profiles with humic and histic horizons in a toposequence under Araucaria moist fore
Rev. Bras. Ciênc. Solo. Publicado em: 2017
-
15. NUEVA ESPECIE DE RANA BROMELÍCOLA DEL GÉNERO PRISTIMANTIS (AMPHIBIA: CRAUGASTORIDAE), MESETA DE LA CORDILLERA DEL CÓNDOR, ECUADOR
ABSTRACT We describe a small frog of the genus Pristimantis inhabiting bromeliads (snout-vent length 20.3-23.3 mm in females, 16.1-17.4 mm in males), from a remote sandstone plateau of the Cordillera del Condor, in southeastern Ecuador, with an altitudinal range of 2,045-2,860 m. A phylogeny based on sequences of DNA (mitochondrial and nuclear genes) support
Pap. Avulsos Zool.. Publicado em: 2017
-
16. Slope stability analysis at highway BR-153 using numerical models
Abstract An existing cut slope on Highway RS-471/BR-153 is studied. The slope is composed of the Serra Geral Formation's material: a highly altered volcanic breccia and above it a slightly altered and very fractured rhyolite. A numerical analysis of the slope is carried out in two dimensions. Fracturing of the rhyolite necessitates the use of a constitutive
Rem: Rev. Esc. Minas. Publicado em: 2016-06
-
17. Construction of a New Aluminum(III) Cation Selective Electrode Based on 12-Crown-4 as an Ionophore
This article describes the fabrication of a novel and selective polyvinylchloride (PVC) membrane potentiometric sensor for Al3+ cation based on 12-crown-4 (12C4) as an ionophore. The electrode was prepared by coating the surface of a graphite rod by a membrane containing PVC as a plastic matrix, dibutylphthalate (DBP) as plasticizer, 12C4 as an ionophore and
J. Braz. Chem. Soc.. Publicado em: 2015-05
-
18. Horizontal and vertical distribution of mesozooplankton species richness and composition down to 2,300 m in the southwest Atlantic Ocean
We describe the species richness, distribution and composition of mesozooplankton over the continental shelf and slope, and in the water masses in the Campos Basin, southwest Atlantic Ocean. We analyzed the mesozooplankton from two oceanographic cruises (rainy and dry seasons, 2009) with samples taken in five different water masses from the surface to 2,300
Zoologia (Curitiba). Publicado em: 2014-10
-
19. Comparação entre mapas de solos obtidos pelos métodos convencional e digital numa área complexa / Comparison between soil maps obtained by conventional and digital methods in complex area
Soil maps are essential for the development of agricultural areas in an economically viable and environmentally friendly manner. So far, Brazil only has soil maps of small scale (1:250,000 to 1:1,000,000), whose use is limited to agricultural and environmental planning at the farm. Despite its importance, in Brazil a few mappings have been carried out by pub
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 16/04/2012
-
20. COMPORTAMENTO DE TALUDE DA MARGEM DO RIO SÃO FRANCISCO SUBMETIDO À TECNICA DE BIOENGENHARIA DE SOLOS. / BEHAVIOR OF THE SLOPE OF THE SÃO FRANCISCO RIVER SUBJECTED TO THE SOIL BIOENGINEERING TECHNIQUE.
The lower San Francisco river had changed their hidrossedimentological behavior by changes in river channel through the impoundment of water reservoirs for the implementation of large hydropower projects. These direct impact on the stability of river banks, demands actions to mitigate the erosion resulting from soil mass movements. Soil bioengineering, which
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 09/02/2012
-
21. Study of the number of occlusal contacts in maximum intercuspation before orthodontic treatment in subjects with Angle Class I and Class II Division 1 malocclusion
OBJECTIVE: Define and compare numbers and types of occlusal contacts in maximum intercuspation. METHODS: The study consisted of clinical and photographic analysis of occlusal contacts in maximum intercuspation. Twenty-six Caucasian Brazilian subjects were selected before orthodontic treatment, 20 males and 6 females, with ages ranging between 12 and 18 years
Dental Press Journal of Orthodontics. Publicado em: 2012-02
-
22. Análise dos efeitos da vegetação na proteção de taludes rodoviários e proposição de alternativas de revegetação na BR-386 / Effects of vegetation on the road slope protection
Esta dissertação discute o emprego de técnicas de estabilização de taludes rodoviários de corte e aterros utilizando drenagem superficial e vegetação. Os conceitos de aplicação de vegetação no aumento da resistência do solo, diminuição da poro-pressão e diminuição da erosão superficial do terreno são revisados. O trabalho discute a import
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2012
-
23. Análise cinemática do controle cervical, do tronco e do membro superior em crianças com desenvolvimento motor típico com idade de um a quatro meses / Kinematic analysis of head, of trunk and upper limb in motor development of children with typical with one to four months age
The psychomotor development is typically characterized by the gradual acquisition of postural control. The prone position is indicated for the control cervical, scapular stability that favors, for the support of the forearms and hands. Therefore, the objective of this study was to identify the effect of different degrees of inclination of the supporting surf
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 14/12/2011
-
24. Impact of the recovery of a degraded area on the hydrological and sedimentary responses in semi-arid environment / Impacto da recuperaÃÃo de Ãrea degradada sobre as respostas hidrolÃgicas e sedimentolÃgicas em ambiente semiÃrido
As regiÃes semiÃridas compreendem Ãreas muito sensÃveis Ãs alteraÃÃes do seu ambiente natural. O semiÃrido brasileiro, por ser um dos mais populosos do mundo, està mais susceptÃvel Ãs atividades antrÃpicas, como o desmatamento para atividades agrosilvopastoris. Esta pesquisa foi desenvolvida no Ãmbito do projeto âEstudos dos processos de degrad
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 09/09/2011