arguably, the natural gas transmission pipeline infrastructure in iran represents one of the largest andmost complex mechanical systems in the world. the optimization of large gas trunk lines known asigat results in reduced fuel consumption or higher capability and improves pipeline operation. in thecurrent study, a single-objective optimization was conducted for khormoj compressor station on t...

BACKGROUND AND PURPOSE Recent reports describe a high rate of thromboembolic events related to Guglielmi detachable coil (GDC) use in the treatment of cerebral aneurysms. The purpose of this study was to investigate electrolysis-related changes of blood as a potential cause of thromboembolic complications associated with GDC use. METHODS For in vitro observations, 15 GDCs (10 conventional coi...

A theoretical analysis of the circuits for a nitrogen laser driven by the Blumlein or capacitor charge transfer transmission line is given in detail. The electrical characteristics of the charge line for a special case of resonant charging are discussed and the effects of various parameters on voltage and current are investigated. By using MICRO-CAP software the transient behavior of the curren...

Since Zwilling and co-workers first introduced the electrochemical anodization method to prepare TiO2 nanotubes in 1999, it has attracted a lot of researches due to its outstanding gas response and selectivity, making it widely used in gas detection field. This review presents an introduction to the sensor applications of TiO2 nanotube arrays (TNTAs) in sulfur hexafluoride (SF6)-insulated equip...

W.A. Stygar, P. A. Corcoran, H. C. Ives, R. B. Spielman, J.W. Douglas, B. A. Whitney, M.A. Mostrom, T. C. Wagoner, C. S. Speas, T. L. Gilliland, G. A. Allshouse, R. E. Clark, G. L. Donovan, T. P. Hughes, D. R. Humphreys, D.M. Jaramillo, M. F. Johnson, J.W. Kellogg, R. J. Leeper, F.W. Long, T. H. Martin, T. D. Mulville, M.D. Pelock, B. P. Peyton, J.W. Poukey, J. J. Ramirez, P. G. Reynolds, J. F....

In this work, we present the application of exergy analysis in the evaluation of the ethanol steam reforming (ESR) process in a catalytic membrane reactor (CMR) containing Pd-Ag membranes sandwiched by PdRh/CeO2 catalyst to produce fuel cell grade pure hydrogen (no sweep gas). ESR experiments were performed at T=873-923 K and P=4-12 bar. The fuel was a mixture of ethanol and distilled water wit...

SF 6 gas has excellent dielectric strength, but it causes global warming about 23900 times more than CO 2 gas which is the main cause of global warming. This shows necessity of the environment friendly dielectric gas which can replace SF 6 gas. We made the test chamber which simulated inner of the gas insulation switchgear (GIS) and 25.8kV GIS of 3 phase unity bundle operation tank type. The br...