Particle image velocimetry was used to measure 2D velocity fields in representative regions of interest within flow channels of interdigitated and single-serpentine proton exchange membrane (PEM) fuel cell models. The model dimensions, gas diffusion layer (GDL) permeability, working fluid, and flow rates were selected to be geometrically and dynamically similar to the cathode-side airflow in a ...

Brett, C. E. and Brookfield, M. E., 1984. Morphology, faunas and genesis of Ordovician hardgrounds from southern Ontario, Canada. Palaeogeogr., PaIaeoclirnatol., PalaeoecoI., 46: 233-290. We have used associations of different rnicrofacies to define facies (or microfaties associations) which fom reasonably welldefined sequences, which we infer, from amlogies with recent and ancient carbonate en...

Wireless network-on-chip (WiNoC) is considered as a novel approach for designing future multi-core systems. In WiNoCs, wireless routers (WRs) utilize high-bandwidth wireless links to reduce the transmission delay between the long distance nodes. When the network traffic loads increase, a large number of packets will be sent into the wired and wireless links and can...

Magnetorheological dampers (MRDs) use the controlled rheological properties of MRF with action an applied magnetic field to achieve lower current regulation and control larger damping. MRD technology is defense industry, vehicle engineering, civil traffic aerospace, other equipment. In this paper, structural design latest engineering applications three types MRDs including internal, bypass, hyb...

Cabuk, Serdar Ph.D., Purdue University, December, 2006. Network Covert Channels: Design, Analysis, Detection, and Elimination. Major Professors: Carla E. Brodley and Eugene H. Spafford. Indirect communication channels have been effectively employed in the communications world to bypass mechanisms that do not permit direct communication between unauthorized parties. Such covert channels emerge a...

Cabuk, Serdar Ph.D., Purdue University, December, 2006. Network Covert Channels: Design, Analysis, Detection, and Elimination. Major Professors: Carla E. Brodley and Eugene H. Spafford. Indirect communication channels have been effectively employed in the communications world to bypass mechanisms that do not permit direct communication between unauthorized parties. Such covert channels emerge a...

the present study was undertaken to compare the in hospital results of coronary artery bypass graft (cabg) with (on pump) or without (off pump) cardiopulmonary bypass (cpb). data were collected on all first-time isolated cabgs with saphenous vein and/or artery grafts at shahid madani hospital in tabriz-iran, between 2006 and 2009. age and clinical profile were marched between on pump and off pu...

The extant creativity literature suggests that creative projects evolve in organizations through either formal or informal channels. This article advances research beyond these two limited single-channel conceptualizations by exploring why and how accessing both In a study of communications campaign subsidiary Fortune 500 multinational corporation, we find switching from the to channel allows p...

conclusions our study showed superiority of off-pump cabg regarding lvef, rvef and valves regurgitations. future studies with prospective structure, accurate randomization, longer follow up duration, and larger sample size are needed. results one hundred eighteen patients with the mean age of 59.47 ± 9.68 years were included (81 male and 37 female). on-pump cabg was done on 84 patients and off-...