نتایج جستجو برای: static compression pressure

تعداد نتایج: 592716  

Journal: :E3S web of conferences 2023

Article village to the farm intended of lands productivity save important from conditions one has been soil compression ahead get technician and technological ways work on exiting dedicated. In this economy technique their aggregates by soil, too much, except problems, was studied. Village car complex parameters situation account received without, movers pressure equations that determine power ...

Journal: :Optics letters 2013
William A Okell Tobias Witting Davide Fabris Dane Austin Maïmouna Bocoum Felix Frank Aurélien Ricci Aurélie Jullien Daniel Walke Jonathan P Marangos Rodrigo Lopez-Martens John W G Tisch

We investigated the carrier-envelope phase (CEP) stability of hollow-fiber compression for high-energy few-cycle pulse generation. Saturation of the output pulse energy is observed at 0.6 mJ for a 260 μm inner-diameter, 1 m long fiber, statically filled with neon. The pressure is adjusted to achieve output spectra supporting sub-4-fs pulses. The maximum output pulse energy can be increased to 0...

Journal: :Langmuir : the ACS journal of surfaces and colloids 2010
A Halperin E B Zhulina

Force versus distance profiles acquired by atomic force microscopy probe the structure and interactions of polymer brushes. An interpretation utilizing the Derjaguin approximation and assuming local compression of the brush is justified when colloidal probes are utilized. The assumptions underlying this approach are not satisfied for sharp tips, and deviations from this model were reported for ...

ژورنال: مواد پرانرژی 2011
زمانی, جمال, شیخی کوهسار, علی اصغر , معتمد الشریعتی, سید هادی, کدخدا قمصری, علی,

  Abstract   In this paper, the effect of strain rate sensitivity of materials in the case of a fully clamped circular plate has been discussed introducing a new criterion called "dynamic to static collapse pressure ratio". In order to do so, a simple mass and wire model is assumed. Then, using Cowper-Symonds constitutive relation and Perrone-Bhadra Simplifications, the mean strain rate of su...

2017
Brian J. Chow Tzehan Chen Ying Zhong Meng Wang Yu Qiao

The current study discovers that uniaxial compression under ambient condition can directly cause strong bonding in ultra-dry montmorillonite, which is attributed to the secondary molecular interaction other than hydrogen bonding. The strength of so-processed material is sensitive to the lateral confinement condition of loading. Similar compaction pressure produces equally strong solids between ...

Journal: :نشریه مهندسی عمران و نقشه برداری 0
سیّد مجدالدین میرمحمّدحسینی دانشگاه صنعتی امیرکبیر مسعود شریف زاده اصلی دانشگاه صنعتی امیرکبیر

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Journal: :gas processing 0
sahar safarian department of energy engineering, sharif university of technology, tehran, iran masoomeh bararzadeh department of energy engineering, sharif university of technology, tehran, iran

the exergy analysis is a proper method for performance evaluation of industrial systems. a generic and detailed analysis of the gpcss on the second gas pipeline of iran  is made by the means of exergy. the two main improvement measures of fuel pre-heating and steam injection technologies are presented for the current conventional stations. steady state equations regarding the second law of ther...

Journal: :The European respiratory journal 1994
L Freitag R Eicker B Linz D Greschuchna

Three major problems are currently associated with airway stents: mucostasis, formation of granulation tissue, and migration. We wanted to determine whether these problems could be solved by a different stent design. Based on theoretical considerations of an idealized trachea, we developed a dynamic bifurcation stent made of silicone which incorporates horseshoe-shaped steel struts. A flexible ...

Journal: :Resuscitation 2006
Charles F Babbs

OBJECTIVE To discover design principles underlying the optimal waveforms for external chest and abdominal compression and decompression during cardiac arrest and cardiopulmonary resuscitation (CPR). METHOD A 14-compartment mathematical model of the human cardiopulmonary system is used to test successive generations of randomly mutated external compression waveforms during cardiac arrest and r...

Journal: :Transactions of the Architectural Institute of Japan 1970

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