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Tensoes Residuais na Soldagem, Aspectos Basicos
(1995-12-01)
The purpose of this paper is to analyze the basic aspects of the residual stresses in welding. Concepts about macro and micro residual stresses in metals are considered in welding. In a simple welding model is shown how ...
Stress analysis in oral obturator prostheses: Imaging photoelastic
(2013-07-08)
Maxillary defects resulting from cancer, trauma, and congenital malformation affect the chewing efficiency and retention of dentures in these patients. The use of implant-retained palatal obturator dentures has improved ...
Spleen tissue changes after restraint stress: effects of aerobic exercise training
(2021-01-01)
Inflammation has been described as a prominent mechanism involved in dysfunctions and diseases evoked by chronic stress. Notably, the spleen is an immune organ controlled by sympathetic and glucocorticoid mechanisms, but ...
Stress distribution in the peri-implant area of pure titanium and titanium-zirconium small implants
(2019-01-01)
Aim: In dental implant treatment, there is a demand for mechanically stronger implants. Despite the existence of several studies showing the clinical success of narrow diameter implants, most of them are based on pure ...
Chronic restraint or variable stresses differently affect the behavior, corticosterone secretion and body weight in rats
(Elsevier B.V., 2007-01-30)
Organisms are constantly subjected to stressful stimuli that affect numerous physiological processes and activate the hypothalamo-pituitary-adrenal (HPA) axis, increasing the release of glucocorticoids. Exposure to chronic ...
Study of Brazilian commercial Oriented Strand Board panels using stress wave
(2013-08-09)
Today lumber industry has shown a clearly evident trend towards wood based panels' production; and, among them, Oriented Strand Board (OSB) has become more and more prominent. Nondestructive Testing (NDT) such as stress ...
Adhesive cementation of zirconia posts to root dentin: Evaluation of the mechanical cycling effect
(2008-12-01)
This study evaluated the effect of mechanical cycling on the bond strength of zirconia posts to root dentin. Thirty single-rooted human teeth were transversally sectioned to a length of 16 mm. The canal preparation was ...
Diverter damper force analysis and stress intensity factors for its double fillet welds by boundary element method
(2021-03-01)
Mechanisms usually transmit power by welded links into a shaft. Should this weld be partial, like fillet welds, there will be an area of stress concentration that could behave like a crack due to sharp corners. These can ...
Interactive effects of mechanical ventilation, inhaled nitric oxide and oxidative stress in acute lung injury
(Elsevier B.V., 2014-01-01)
To compare conventional mechanical ventilation (CMV) and high-frequency oscillatory ventilation (HFOV), with/without inhaled nitric oxide (iNO), for oxygenation, inflammation, antioxidant/oxidative stress status, and DNA ...