Results 171 to 180 of about 2,607 (224)

A Pedologia e a Agricultura de Precisão. [PDF]

open access: yes, 2017
FILIPPINI ALBA, J. M., FLORES, C. A.
core  

Avaliação de diferentes genótipos de cana-de-açúcar no sul do brasil quanto à incidência de ferrugem das folhas e mancha parda. [PDF]

open access: yes, 2013
AMARAL, A. S. do   +5 more
core  

Creep Investigation of SiCf-SiBC Composites

Scripta Materialia, 2005
The concept of ceramic matrix composites was proposed in the eighties to be used in the aeronautical and space domains. Classical SiCf-SiC have changed into complex materials, such as SiCf-SiBC investigated in this work: that composite is reinforced with SiC Hi-Nicalon fibers and has a multi-layer and self-sealing matrix.
Gaëlle Farizy   +3 more
  +6 more sources

Boundary Element Formulation Enforcing High-Order Surface Impedance Boundary Conditions for Axisymmetric Eddy Current Problems

IEEE transactions on magnetics, 2021
This article presents a boundary element method (BEM) formulation coupled with high-order surface impedance boundary conditions (SIBCs) for axisymmetric eddy current problems.
S. Yin   +3 more
semanticscholar   +1 more source

Fabrication of Si3N4–SiBC composite ceramic and its excellent electromagnetic properties

Journal of the European Ceramic Society, 2012
Abstract To obtain better electromagnetic wave absorbing property, it is vitally necessary to develop novel ceramics with not only high dielectric loss but also low dielectric constant. Si3N4–SiBC, a composite ceramic with such dielectric properties, was fabricated by infiltrating SiBC into porous Si3N4 ceramic via low pressure chemical vapor ...
Fang Ye   +5 more
openaire   +1 more source

BEM Computation of the Internal Impedance of Air-Core Inductors Enforcing High-Order Surface Impedance Boundary Conditions

IEEE transactions on magnetics, 2021
The internal impedance of an axisymmetric air-core inductor is computed by the boundary element method (BEM) coupled with high-order surface impedance boundary conditions (SIBCs), which considers the curvature of the cross sections of the conductors. The
S. Yin   +3 more
semanticscholar   +1 more source

Damage Creep Mechanisms of SiCf-SiBC Composites

2008
In the 1373-1523K domain, the creep behavior of SiC f -SiBC batches tested under argon and 120 MPa has been investigated. The creep deformation of these composite is governed by a damage creep mechanism: first the creation of matrix microcracking until its saturation, then an opening of the microcracks in the transverse tows.
S. Darzens   +3 more
openaire   +1 more source

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