This study is focused on the deformation mechanism and behavior of naturally aged 7010 aluminum alloy at elevated temperatures. The specimens were for 60 days to reach a saturated hardness state. High-temperature tensile tests sample conducted different temperatures 573, 623, 673, 723 K various strain rates ranging from 5 × 10−5 10−2 s−1. dependency stress rate showed exponent, n, ~6.5 low two ...

Microtubule flux in spindles of insect spermatocytes, long-used models for studies on chromosome behavior during meiosis, was revealed after iontophoretic microinjection of rhodamine-conjugated (rh)-tubulin and fluorescent speckle microscopy. In time-lapse movies of crane-fly spermtocytes, fluorescent speckles generated when rh-tubulin incorporated at microtubule plus ends moved poleward throug...

We have carried out long time scale simulations where the \dimer method" [G. Henkelman and H. J onsson, J. Chem. Phys. 111, 7010 (1999)] is used to nd the mechanism and estimate the rate of transitions within harmonic transition state theory and time is evolved by using the kinetic Monte Carlo method. Unlike traditional applications of kinetic Monte Carlo, the atoms are not assigned to lattice ...

Microtubule flux in spindles of insect spermatocytes, long-used models for studies on chromosome behavior during meiosis, was revealed after iontophoretic microinjection of rhodamine-conjugated (rh)-tubulin and fluorescent speckle microscopy. In time-lapse movies of crane-fly spermtocytes, fluorescent speckles generated when rh-tubulin incorporated at microtubule plus ends moved poleward throug...

this paper presents the effect of high environmental heat on behavior of the male charles foster rats. eighty rats were divided into three groups, subjected to (i) acute heat stress (ii) chronic heat stress and (iii) handling control group. animals were exposed to the hot environment in a biological oxygen demand incubator at 38 ± 1ºc (relative humidity 45-50%) for four hours of continuous sing...

In many countries breath-alcohol testing is a well established method to control driving under the influence of alcohol. Various analytical principles are used to measure the alcohol concentration in expired breath, such as gas chromatography, electrochemical cells, semiconductors, and infrared spectrometry. A breath-alcohol analyzer based on the last method was demonstrated at the last meeting...

Background One of the most important cause of severe neonatal hyperbilirubinemia is hemolysis including Rh incompatibility.  The aim of this study was to assess the rate of hyperbilirubinemia due to hemolysis in Rh positive neonates  born to Rh negative mothers. Methods In this retrospective study from March 1998 to February 2003, 60 icteric Rh positive newborns that were born to Rh negative m...