Buscar
Mostrando ítems 11-20 de 194
A simplified mathematical model to estimate the erosive capacity of a pulsating laminar muddy flow
(Assoc Brasileira Engenharia Sanitaria Ambiental, 2018-09-01)
In this paper, we proposed and validated a simplified mathematical model to estimate the erosive capacity of a muddy laminar flow with roll waves (pulsating effect) on the free surface. From the perspective of applying ...
Control of instabilities in non-Newtonian free surface fluid flows
(Abcm Brazilian Soc Mechanical Sciences & Engineering, 2013-10-01)
Free surface flows in inclined channels can develop periodic instabilities that are propagated downstream as shock waves with well-defined wavelengths and amplitudes. Such disturbances are called roll waves and are common ...
Interactive effects of grazing and environmental stress on macroalgal biomass in subtropical rocky shores: Modulation of bottom-up inputs by wave action
(2015-02)
In contrast to what is observed in most temperate regions, perennial macroalgae are rare at the mid intertidal level of tropical and subtropical shores, and energy transfer through benthic herbivores largely relies on the ...
Anelastic relaxation due to OH pairs in NbZr alloys
(Elsevier B.V., 1994-09-01)
In the last 30 years several studies have been made to understand the relaxation mechanisms of the hydrogen atoms present in transition metals and their alloys. In this work, we observed the stress-induced ordering of ...
Application of acoustoelasticity to measure the stress generated by milling in ASTM A36 steel plates
(Abcm Brazilian Soc Mechanical Sciences & Engineering, 2013-11-01)
This work presents the study of the effects of the milling parameters on the stress field for ASTM A36 plates, using a new technique, named the ultrasonic method with acoustoelastic theory. The parameters selected are the ...
Evaluation of stresses generated by welding in API 5L X65 steel using acoustoelasticity
(Amer Soc Nondestructive TestColumbusEUA, 2008)
Combined effects of waves and plants on a mud deposition event at a mudflat-saltmarsh edge in the Bahía Blanca estuary
(Elsevier, 2010-12)
This study was carried out at the Bahı´a Blanca Estuary, Argentina, at the seaward edge of a saltmarsh. The saltmarsh-mudflat boundary in the study area shows sediment deposits at a higher elevation immediately seaward of ...
Ensaios não-destrutivos de propagação de ondas em toras e madeira serrada de Pinus. taeda L.
(2010)
In this paper it was evaluated the influence of the relative position of logs on the trees, the type of wood (juvenile and mature wood and pith) and the dimension of sawed wood elements on the velocity of propagation of ...