in this study, the effects of linear and rotational speed of the friction stir welding tool was investigated on the heat generation and distribution at surface and inside of workpiece, material flow and geometry of the welding area of poly methyl methacrylate (pmma) workpiece. the commercial cfd fluent 6.4 software was used to simulation of the process with computational fluid dynamic technique...

ECG or Electrocardiograph is a tool to find out the electrical activity of heart in patients. Electrocardiogram (ECG) graphic result records potential resulting from by heartbeat, (Mervin J. Goldman, 1990). recording very useful know present certain hypertrophy, arrhythmia, pericarditis, for example potassium electrolyte disturbances. Tool this be named generator signal ECG. functioning produce...

In this study, CuZn37 brass sheets were joined by applying three different stirrer pins and tool rotation speeds of 500, 800, 1100 rpm friction stir welding, while travel speed (40 mm?min-1), other parameters kept constant. Effects the used weld investigated in zone mechanical features via tensile test, microhardness measurement optical scanning electron microscopies. The rising temperature was...

A three-dimensional heat transfer model for friction stir welding (FSW) is presented in this paper; a moving coordinate is introduced to reduce the difficulty of modeling the moving tool. Heat input from the tool shoulder and the tool pin are considered in the model. The finite difference method was applied in solving the control equations. A non-uniform grid mesh is generated for the calculati...

BACKGROUND A relatively new development in the arena of prostatic histopathological study is the premalignant proliferative changes in the glandular epithelium, possibly relating to carcinoma. Two major categories have come up, namely prostatic intraepithelial neoplasia (PIN) and atypical adenomatous hyperplasia (AAH). AIMS The aims of present study were to identify foci of the two putative p...

Plant development and physiology are widely determined by the polar transport of the signaling molecule auxin. This process is controlled on the cellular efflux level catalyzed by members of the PIN (pin-formed) and ABCB (ATP-binding cassette protein subfamily B)/P-glycoprotein family that can function independently and coordinately. In this study, we have identified by means of chemical genomi...

373 Technology Mapping for FPGAs with Nonuniform Pin Delays and Fast Interconnections Jason Cong, Yean-Yow Hwang and Songjie Xu Department of Computer Science University of California, Los Angeles, CA 90095 fcong, yeanyow, [email protected] Abstract In this paper we study the technology mapping problem for FPGAs with nonuniform pin delays and fast interconnections. We develop the PinMap algorith...

Abstract The effect of carbon fiber Z-pin on composite under moisture condition with and without flexural load was investigated in this work. Moisture absorption property crack propagation reinforced epoxy matrix Z-pinned were evaluated only moisture-coupled conditions. by content microscopic morphology obtained using X-ray micro-computed tomography (X-ray μCT). microstructures inside composite...

In this article effects of friction stir welding (FSW) tool rotational and traverse speeds were studied on heat generation and temperature distribution in welding zone of AA1100 aluminum alloy and A441 AISI joint. Computational fluid dynamics method was used to simulate the process with commercial CFD Fluent 6.4 package. To enhance the accuracy of simulation in this Study, the welding line that...

a total of 68385 live pin-worm eggs from adhesive scotch tape were exposed to different detergent powders in under to compare method of detergent washing clothes with the boiling method for the control of family enterobiasis. results show that: a) 80.4-100 percent of eggs are destroyed after hatching within 6-8 hours of exposure to 0.25 gr% detergent at 10-250c. exposure for less than 6 hours h...