A novel computational method is proposed in this work for use in discovering reaction mechanisms and solving the kinetics of transition metal-catalyzed reactions. The method does not rely on either chemical intuition or assumed a priori mechanisms, and it works in a fully automated fashion. Its core is a procedure, recently developed by one of the authors, that combines accelerated direct dynam...

The current research focuses on understanding the transition of pipe flow by using a triggering device. In particular, rod was installed within CoSma-Pipe at Brandenburg University Technology Cottbus-Senftenberg. effect rod, which has variable height perpendicular to axis inlet, examined in range 2,500 ≤ Re 31,000 where is Reynolds number based mean velocity, diameter, and air's viscosity. This...

We describe a mean-field theory for phase transitions in a Josephson junction array consisting of two sets of parallel wire networks, arranged at right angles and coupled together by Josephson interactions. In contrast to earlier treatments, we include the variation of the superconducting phase along the individual wires; such variation is always present if the wires have finite thickness and a...

all the producing and assembling processes exert residual stress on the pieces that may lead to structural failure. therefore, calculating the residual stress in such structures has been common in recent years. in this article, distribution of temperature and residual stress resulting from arc welding in three-pass butt joint in p91 austenitic stainless steel pipes is calculated and estimated u...

In order to determine the optimal parameters when using an ultrasonic probe measure cavern geometry a metal borehole pipe is present, investigation was firstly carried out on influence of vertical plates with thickness from 1 mm 15 immersed in water transmitted and reflected waves. The results obtained will be used as indicator for measurement underground which placed inside lining borehole. Th...

BACKGROUND Covering the eye of all snakes is a transparent integumental structure known as the spectacle. In order to determine variations in spectacle thickness among species, the spectacles of 217 alcohol-preserved museum specimens of 44 species belonging to 14 different families underwent optical coherence tomography (OCT) to measure spectacular thickness. Multivariable analyses were made to...