نتایج جستجو برای: saft

تعداد نتایج: 465  

Journal: :Fractal and fractional 2023

The special affine Fourier transform (SAFT) is an extended version of the classical and incorporates various signal processing tools which include transforms, fractional transform, linear canonical other related transforms. This paper aims to introduce a novel octonion (O−SAFT) establish several classes uncertainty inequalities for proposed transform. We begin by studying norm split energy cons...

2004
D. Lévesque A. Blouin C. Néron

The time and Fourier domain Synthetic Aperture Focusing Technique (SAFT and FSAFT) have been used to improve both sensitivity and lateral resolution of ultrasonic NDT. Following acquisition of signals over the surface of the tested piece, SAFT identifies a defect by summing all the signals within a certain area (the aperture) after giving proper time-delays. FSAFT, although using the same data,...

2003
Z. M. BENENSON A. B. ELIZAROV T. V. YAKOVLEVA

The synthetic aperture focusing technique (SAFT) has been previously employed to increase the penetration and to extend the depth of focus. This is particularly important in high frequency ultrasonic imaging because dynamic focusing using arrays is not yet possible. However, performance of the SAFT is limited due to its high sidelobes. In this paper, an adaptive weighting technique based on a f...

Journal: :International journal of sports medicine 2009
K Small L R McNaughton M Greig M Lohkamp R Lovell

The aim of this study was to investigate the effect of a multi-directional soccer-specific fatigue protocol on sprinting kinematics in relation to hamstring injury risk. Nine semi-professional soccer players (Mean +/- SD: Age: 21.3 +/- 2.9 year; Height 185.0 +/- 8.7 cm; Body Mass 81.6 +/- 6.7 kg) completed the SAFT(90); a multi-directional, intermittent 90 min exercise protocol representative o...

Journal: :The journal of physical chemistry. B 2008
M Carolina dos Ramos Kimberly D Goff Honggang Zhao Clare McCabe

A statistical associating fluid theory for potential of variable range has been recently developed to model dipolar fluids (SAFT-VR+D) [Zhao and McCabe, J. Chem. Phys. 2006, 125, 104504]. The SAFT-VR+D equation explicitly accounts for dipolar interactions and their effect on the thermodynamics and structure of a fluid by using the generalized mean spherical approximation (GMSA) to describe a re...

2013
N. Bender N. S. M. Cardozo

Cubic equations of state combined with excess Gibbs energy predictive models (like UNIFAC) and equations of state based on applied statistical mechanics are among the main alternatives for phase equilibria prediction involving polar substances in wide temperature and pressure ranges. In this work, the predictive performances of the PC-SAFT with association contribution and Peng-Robinson (PR) co...

2014

There are many difficulties in the purification of raw components and products. However, researchers are seeking better ways for purification. One of the recent methods is extraction using supercritical fluids. In this study, the phase equilibria of benzoic acid -supercritical carbon dioxide system were investigated. Regarding the phase equilibria of this system, the modeling of solid-supercrit...

Journal: :The journal of physical chemistry. B 2006
Honggang Zhao Pedro Morgado Alejandro Gil-Villegas Clare McCabe

The phase behavior of nitrogen + n-alkanes is studied within the framework of the statistical associating fluid theory for potentials of variable range (SAFT-VR). The effect of the quadrupole moment of nitrogen on the phase behavior is considered through an extension of the SAFT-VR equation that includes an additional contribution to the Helmholtz free energy due to quadrupolar interactions. A ...

Journal: :International journal of sports medicine 2016
F M Bossuyt F García-Pinillos R M F Raja Azidin J Vanrenterghem M A Robinson

This study investigated the utility of a 5-min high-intensity exercise protocol (SAFT(5)) to include in prospective cohort studies investigating ACL injury risk. 15 active females were tested on 2 occasions during which their non-dominant leg was analysed before SAFT(5) (PRE), immediately after (POST0), 15 min after (POST15), and 30 min after (POST30). On the first occasion, testing included 5 ...

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

معادله حالت برپایه مولکولی نه فقط یک سری اطلاعات ترمودینامیکی پایه ای مانند پتانسیل شیمیایی یا فوگاسیته را که برای شبیه سازی تعادل های فازی مورد نیاز است، محاسبه می کنند، بلکه اجازه جداسازی و سنجش کمّی اثرات ساختار مولکولی و تاثیر خواص توده ای ماده بر روی رفتار فاز را نیز می دهد. مثال هایی از این تاثیرات مانند اندازه مولکول ها و شکل (مثلاً طول زنجیره)، انرژی تجمعی (مانند پیوند هیدروژنی) و انرژی ...

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