We present a laboratory calibration setup for the individual multi-point calibration of oxygen sensors. It is based on the electrochemical generation of oxygen in an electrolytic carrier solution. Under thorough control of the conditions, i.e., temperature, carrier solution flow rate, and electrolytic current, the amount of oxygen is strictly given by Faradays laws and can be controlled to with...

in a novel dual bed reactor fischer-tropsch synthesis was studied by using two diffrent cobalt catalysts. an alkali-promoted cobalt catalyst was used in the first bed of a fixed-bed reactor followed by a rutenuim promoted cobalt catalyst in the second bed. the activity, product selectivity and accelerated deactivation of the system were assessed and compared with a conventional single bed react...

We consider a thermoelastic contact problem for several bodies under the conditions of unilateral mechanical through nonlinear Winkler surface layers and imperfect thermal contact. obtain weak formulation this in form system formed by variational equation inequality also an alternative linear equations. To solve equations thermomechanical problem, we develop parallel iterative Robin-type domain...

A novel exact analytical solution is derived for the equation y(4)+xny=0 in region x≥0, which important analysis of piles soil with stiffness varying depth. To date, solutions long are available only cases where n=−4, 0, and 1. For other values exponent n, have formerly been obtained numerically, mainly by finite-difference method or approximate solutions. An inherent difficulty obtaining beams...

The security nowadays considered as significant topic specifically in design smart home. This paper is dedicated on an authentication problem door lock using string matching technique based password string.
 work contains two main parts, Android application (remote control) and control circuit Arduino UNO, plus the communication medium Bluetooth technology which used to send receive inform...

We analyzed the effects of gravitational unloading on muscular fatigability and the effectiveness of resistive vibration exercise to counteract these changes. Changes in knee extensor fatigability as a consequence of 8 weeks of horizontal bedrest with or without daily resistive vibration exercise were evaluated in 17 healthy male volunteers. Bedrest increased fatigability (% decrease in maximal...

Our baseline approach from the 2012 year includes three language-independent methods for the task of answer validation. All methods are based on a scoring mechanism that reflects the degree of similarity between the question-answer pairs and the supporting text. We evaluate the proposed methods when using various string similarity metrics, such as exact matching, Levenshtein, Jaro and Jaro-Wink...