نتایج جستجو برای: micro parameters

تعداد نتایج: 686410  

ghiyam eslami, shahram abbaspour

Micro system technology is a relatively new scientific research that deals with the development and study of properties of materials in micro dimensions. Micro-grippers are widely used in switching, positioning, and assembling micron sized components in micro-robotics. In this study, the static and dynamic behavior of visco-elastic Micro-Tweezers under the thermal and electrostatic field is...

Water harvesting is the collection of runoff for productivity purposes, instead of runoff being left to cause erosion. In arid and semi-arid drought-prone areas, micro-catchments are widely used as a water harvesting method to improve rangeland condition. The aim of present study was to investigate the effects of micro-catchment on ecological indices of rangeland health in Ghick-Sheikhha, Jirof...

Journal: :international journal of advanced design and manufacturing technology 0
aliakbar lotfi saeed daneshmand saeed adib nazari

in this study, as for the re-casting, surface alloying and re-solidification layer of this alloys at the work piece level machining with wire electro discharge machining (wedm), changes of surface micro hardness with changes of operational parameters has been studied. therefore, study shows using surface alloying phenomena with the diffusion of wire material into the machined surface and select...

Journal: :Engineering review 2023

This review paper provides a comprehensive analysis of the various factors affecting micro-forming and parameters involved in manufacturing micro-parts. To ensure minimal wear tear error-free products, it is important to optimize both process framework. The aims highlight importance metal technology designing highly precise micro metallic devices, biodegradable implants, micro-pumps, gears. Thr...

Journal: :International Journal of Innovative Research in Science, Engineering and Technology 2014

2014
M. Derkaoui A. Hamid T. Lebey R. Melati

This paper presents the design and modeling of a square micro-transformer for its integration in a flyback converter. From the specifications of the switching power supply, we determined the geometric parameters of this micro-transformer. The π-electrical model of this micro-transformer highlights all parasitic effects generated by stacking of different material layers and permits to calculate ...

پایان نامه :دانشگاه بین المللی امام خمینی (ره) - قزوین - دانشکده علوم پایه 1392

in this thesis,spin dependend transport and electron transport through of ng/sg(graphene/ superconductor graphen) are studied in the junction of ng/fgt/sg. due to andreev reflection conductance increases in the presence of superconductor graphene.also, by applying a voltage gate on a superconductor, fermi level shifts and the conductance is independent of ferromagnatic substrate. also, the cond...

Journal: :iranian journal of hydrogen & fuel cell 2014
faramarz hormozi elham omidbakhsh amiri hussein jelveh

steam reforming integrated with oxidation of methanol was considered with numerical simulation. the parallel micro-channels with circular cross sections were used. because when the catalytic deposited inside the rectangular micro-channels, it fills up the edges. hence, the approximation of a cylindrical channel is appropriate. effect of this changing in cross section was considered and results ...

2005
Weilin Qu Issam Mudawar

This study provides a comprehensive methodology for optimizing the design of a twophase micro-channel heat sink. The heat sink parameters are grouped into geometrical parameters, operating parameters, and thermal/fluid parameters. The objective of the proposed methodology is to optimize micro-channel dimensions in pursuit of acceptable values for the thermal/fluid parameters corresponding to a ...

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