Edge Influence
Mostrando 13-24 de 116 artigos, teses e dissertações.
-
13. The influence of El Niño and edge effects on the reproductive phenology and floral visitors of Eschweilera tetrapetala Mori (Lecythidaceae), an endemic species of the Atlantic Forest of northeastern Brazil
ABSTRACT We compared the reproductive phenology and floral visitors of Eschweilera tetrapetala growing along the edge and in the interior of a submontane forest in the Chapada Diamantina mountains, Bahia State, Brazil. We sought to determine if there were inter-annual differences in intensity and seasonality associated with environmental conditions, and if t
Acta Bot. Bras.. Publicado em: 19/10/2017
-
14. Influence of artificial lights on the orientation of hatchlings of Eretmochelys imbricata in Pernambuco, Brazil
ABSTRACT Sea turtle hatchlings, in natural abiotic conditions, emerge from their nests at night and go directly to the sea, following the moonlight’s reflection in the ocean. Increased human activities such as tourism and artificial lights on the coasts, however, have interfered with the ability of sea turtle neonates to find their correct destination, neg
Zoologia (Curitiba). Publicado em: 19/10/2017
-
15. Analytical Bending and Stress Analysis of Variable Thickness FGM Auxetic Conical/Cylindrical Shells with General Tractions
Abstract In the present research, a unified semi-analytical solution that incorporates influence of the auxeticity (negative Poisson ratio) of the material into elastic responses of the variable thickness functionally graded conical and cylindrical shells and circular/annular plates is developed. The top or bottom layers of the shell/plate may be subjected t
Lat. Am. j. solids struct.. Publicado em: 2017-06
-
16. Comprehensive Study of Growth Mechanism and Properties of Low Zn Content Cd1-xZnxS Thin Films by Chemical Bath
Cd1-xZnxS thin films have been studied extensively as window layers for solar cell applications. However, a mismatch between the Cd1-xZnxS and copper-indium-gallium-selenide absorber layers increases with Zn film concentration, which reduces the device efficiency. In this work, Cd1-xZnxS thin films with low Zn concentrations were analyzed. The effect of the
Mat. Res.. Publicado em: 03/10/2016
-
17. Spider species composition in the tree-shrub strata of riparian forests and its microhabitats in southern Brazil
ABSTRACT The composition of the spider fauna of riparian forests is insufficiently known. These forests, adjacent to both aquatic and terrestrial environments, are recognised as having important ecosystem functions. We compare the composition of spider assemblages of four riparian forests in different drainage basins, along with their microhabitats (edges an
Zoologia (Curitiba). Publicado em: 14/07/2016
-
18. Geometry and head loss in Venturi injectors through computational fluid dynamics
ABSTRACT To determine the influence of geometry on the hydrodynamic behavior of Venturi injectors, using computational fluid dynamics techniques, we studied, at the Universitat Politècnica de València, Valencia, Spain, the geometric parameters that exert the most influence on head losses: the relationship between throat diameter and nozzle (β), nozzle ang
Eng. Agríc.. Publicado em: 2016-06
-
19. Effects of Partial Edge Loading and Fibre Configuration on Vibration and Buckling Characteristics of Stiffened Composite Plates
Abstract In this work, the influence of uniaxial and biaxial partial edge loads on buckling and vibration characteristics of stiffened laminated plates is examined by using finite element method. As the initial pre-buckling stress distributions within an element are highly non-uniform in nature for a given loading and edge conditions, the critical loads are
Lat. Am. j. solids struct.. Publicado em: 2016-05
-
20. The Influence of Twist Drill Main Cutting Edge Preparation in Drilling Process
In order to improve the performance of a twist drill, one must understand some aspects involved in drilling process that are not commonly addressed, such as the micro geometry employed in the tool’s tip sharpening and the protection of the main cutting edge. The edge of the twist drill can be protected by rounding, chamfering or the combination of both. Th
Mat. Res.. Publicado em: 17/11/2015
-
21. Numerical Simulation on the Radar Cross Section of Variable-Sweep Wing Aircraft
ABSTRACT: The influence of variable-sweep wing on the aircraft's radar cross section (RCS) characteristics has been studied to reduce the aircraft's RCS as well as its detection probability by the hostile radar. With the help of CATIA, a 3-D digital model of the variable-sweep wing aircraft is built to generate a series of digital grids. Using MATLAB, a nume
J. Aerosp. Technol. Manag.. Publicado em: 2015-06
-
22. Influência do efeito de borda sobre a anurofauna do parque estadual Carlos Botelho (SP) / Influence of edge effects in frogs of parque estadual Carlos Botelho (SP)
This study aimed to determine the extent of the edge effect and its influence on the richness and abundance of amphibians in a conservation of the Atlantic Forest in the state of São Paulo, the Carlos Botelho State Park. We used 28 transects with six plots of 4 × 4 m apart and parallel to the edge of this 0, 25, 50, 100, 200 and 300 m, totaling 168 samples
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 14/09/2012
-
23. Influência de um fragmento florestal sobre as comunidades de macroinvertebrados de um córrego tropical degradado
Land use changes have resulted in large environmental impacts, and in agricultural landscapes sometimes only forest fragments remain. However, riparian forest remnants can influence positively stream water quality, and serve as refuge to aquatic species sensible to deforestation. We evaluated if the presence of a riparian forest remnant influences the struct
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 05/07/2012
-
24. Lutzomyia longipalpis abundance in the city of Posadas, northeastern Argentina: variations at different spatial scales
The distribution of Lutzomyia longipalpis is heterogeneous with a pattern of high abundance areas (HAAs) embedded in a matrix of low abundance areas (LAAs). The objective of this study was to describe the variability in the abundance of Lu. longipalpis at two different spatial levels and to analyse the relationship between the abundance and multiple environm
Mem. Inst. Oswaldo Cruz. Publicado em: 2012-09