Early diastolic left ventricular (LV) untwisting has been evaluated as a manifestation of LV recoil, reflecting the release of elastic energy stored during systole. The primary goal of this study was to characterize the relationship between systolic strain (e.g., circumferential strain and the shear strains that comprise twist) with the resulting early diastolic shear strain rates, including th...

abstract during these protracted years, mankind’s main foods consist of grains-specially wheat, oats and rice. granary production and its storage have been one of the main concerns of a human being for a long time. microwave radiation as a safe insect control agent could secure high mortality rate of insect population by increasing the temperature of insects’ body and its niche. low temperature...

The universally applied Codd's relational model has two constructs: a stored relation, with stored attributes only and a view, only with the inherited ones. In 1992, we have proposed third construct, mixing both types of attributes. Examples showed the idea attractive. No one followed however. We now revisit our proposal. We show that a relational database scheme using also our construct may be...

background heat is a harmful factor in workplaces that causes physiologic and cognitive changes in workers. objectives the purpose of this study was to investigate the effect of cooling vest on heat strain and reaction time while wearing chemical-biological-nuclear protective clothes. methods twelve male students with mean age of 25 ± 2 and body mass index (bmi) of 23 ± 1.5 were recruited in th...

determination of critical points on hot stress-strain curve of metals is crucial in thermo-mechanical processes design. in this investigation a mathematical modeling is given to illustrate the behavior of metal during hot deformation processes such as hot rolling. the critical strain for the onset of dynamic recrystallization has been obtained as a function of strain at the maximum stress. in a...

advanced high strength steels (ahss) have recently attracted great attention because of their superior mechanical properties. a modern group of these steels, known as twinning induced plasticity (twip) steels, shows a unique combination of strength and ductility even at high rates of strain. in order to examine the functionality of such steels in dynamic loading conditions, their mechanical beh...

The purpose of this work was to investigate the population dynamics spores and vegetative cells A. acidoterrestris in orange juice treated with temperature-assisted HHP stored different isothermal conditions. For reason, two strains were inoculated commercial subjected treatment at 600 MPa/60 °C for 5 10 min. Inoculated samples subsequently 4, 12 25 60 days. During storage, determined before af...

When a material is plastically deformed the majority of mechanical work dissipated as heat, and fraction plastic converted into heat known Taylor-Quinney coefficient (TQC). Large-scale molecular dynamics simulations were performed high strain rate compression single-crystal tantalum, resulting integral differential TQC values are reported up to true strains 1.0. A phenomenological model propose...

Reagent production: selecting the strain, preparing the antigen and controlling quality The choice of the strain to use is an extremely critical point. The use of the B103 strain, the reference strain used by Regalla et al. in 1999 to develop the IBT method, is highly recommended and should be used to ensure consistent results among laboratories. The antigen is then prepared from a culture grow...

Foams have unique rheological properties that range from solidlike to fluidlike. We study two-dimensional noncoarsening foams of different disorder under shear in a Monte Carlo simulation, using a driven large-Q Potts model. Simulations of periodic shear on an ordered foam show several different response regimes. At small strain amplitudes, bubbles deform and recover their shapes elastically, a...