نتایج جستجو برای: fourier transform infra

تعداد نتایج: 143345  

Journal: :IOSR Journal of Mathematics 2013

Journal: :IEEE Transactions on Signal Processing 2008

Journal: :int. journal of mining & geo-engineering 2014
reza ahmadi nader fathianpour gholam-hossain norouzi

to date, a number of numerical methods, including the popular finite-difference time domain (fdtd) technique, have been proposed to simulate ground-penetrating radar (gpr) responses. despite having a number of advantages, the finite-difference method also has pitfalls such as being very time consuming in simulating the most common case of media with high dielectric permittivity, causing the for...

Journal: :Chemistry and physics of lipids 2002
J Wouters S Vandevoorde C Culot F Docquir D M Lambert

Based on a series of physicochemical properties (differential scanning calorimetry, powder X-ray crystallographic studies and Fourier-transform infra red spectroscopic analysis) determined for N-stearoylethanolamine (NSEA) (C18:0) at different temperatures, evidence has been given that this compound can exist in (at least) three polymorphic forms. Powder X-ray crystallography clearly demonstrat...

Journal: :Molecules 2013
Adriana Morales-Ortega Elizabeth Carvajal-Millan Yolanda López-Franco Agustín Rascón-Chu Jaime Lizardi-Mendoza Patricia Torres-Chavez Alma Campa-Mada

In the present study water extractable arabinoxylans (WEAX) from a Mexican spring wheat flour (cv. Tacupeto F2001) were isolated, characterized and gelled and the gel rheological properties and microstructure were investigated. These WEAX presented an arabinose to xylose ratio of 0.66, a ferulic acid and diferulic acid content of 0.526 and 0.036 µg/mg WEAX, respectively and a Fourier Transform ...

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