نتایج جستجو برای: ftir spectroscopy

تعداد نتایج: 181847  

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2007
Francis L Martin Nigel J Fullwood

To the Editor: We read the paper by Wang et al. (1) with great interest, and their findings add further support to existing evidence in the literature reporting that Fourier transform infrared (FTIR) spectroscopy is highly effective for the detection of malignant and premalignant tissues. The paper is an excellent piece of work, but we would like to make a few points. Certainly FTIR spectroscop...

2016
MAMTA SHARMA MINAkSHI SHARMA

Galctose oxidase nanoaggregates have been prepared by chemical desolvation method involving the crosslinkng agent glutaraldehyde. These enzyme nanoagregates have been characterized by transmission electron microscopy(TEM), UV visible spectroscopy, Fourier transform infrared spectroscopy (FTIR). TEM reveals the globular spherical nanostructured form upto the range of 20nm. UV visible spectroscop...

Journal: :Acta biochimica et biophysica Sinica 2007
Jilie Kong Shaoning Yu

Infrared spectroscopy is one of the oldest and well established experimental techniques for the analysis of secondary structure of polypeptides and proteins. It is convenient, non-destructive, requires less sample preparation, and can be used under a wide variety of conditions. This review introduces the recent developments in Fourier transform infrared (FTIR) spectroscopy technique and its app...

Journal: :The Analyst 1998
L Rintoul H Panayiotou S Kokot G George G Cash R Frost T Bui P Fredericks

The versatility of FTIR spectrometry was explored by considering a variety of samples drawn from industrial applications, materials science and biomedical research. These samples included polymeric insulators, bauxite ore, clay, human hair and human skin. A range of sampling techniques suitable for these samples is discussed, in particular FTIR microscopy, FTIR emission spectroscopy, attenuated...

2013
J. Depciuch R. Wojnarowska D. Broda H. Nechai M. Gonchar E. Sheregii

16-Mercaptohexadecanoic acid (MHDA) and tripeptide glutathione conjugated with gold nanoparticles (Au-NPs) are characterized by Fourier Transform InfaRared (FTIR) spectroscopy combined with Surface-enhanced Raman scattering (SERS) spectroscopy. Surface Plasmon Resonance (SPR) technique based on FTIR spectroscopy has become an important tool in biophysics, which is perspective for the study of o...

2011
F. R. van de Voort J. Sedman D. Pinchuk

Fourier transform infrared FTIR spectroscopy has found an important analytical niche in the field of condition monitoring CM of lubricants, lubricant quality being a primary determinant of the wear and operational efficiency of engines and machinery. The ability to track a wide range of functional groups associated with chemical changes in lubricants by FTIR spectroscopy allows the overall qual...

Journal: :The journal of medical investigation : JMI 2004
Shinjiro Takata Akira Shibata Hiroshi Yonezu Toshihide Yamada Mitsuhiko Takahashi Aziz Abbaspour Natsuo Yasui

In this review, we focus on findings obtained with biophysic techniques, Fourier transformed infrared (FTIR) spectroscopy and phosphorus-31 solid-state nuclear magnetic resonance (31P solid-state NMR) spectroscopy, which may allow us to evaluate bone quality and to predict bone strength. FTIR measures the absorption energy that produces an increase in the vibrational or rotational energy of ato...

Journal: :The Analyst 2014
Kelly A Heys Matthew J Riding Rebecca J Strong Richard F Shore M Glória Pereira Kevin C Jones Kirk T Semple Francis L Martin

Nanoparticles appear to induce toxic effects through a variety of mechanisms including generation of reactive oxygen species (ROS), physical contact with the cell membrane and indirect catalysis due to remnants from manufacture. The development and subsequent increasing usage of nanomaterials has highlighted a growing need to characterize and assess the toxicity of nanoparticles, particularly t...

Journal: :Chemical communications 2005
Robin H A Ras Cliff T Johnston Robert A Schoonheydt

Octadecylammonium in monolayers transforms into a carbamate derivative, as observed by attenuated total reflection Fourier transform infrared (ATR-FTIR) spectroscopy and 13C nuclear magnetic resonance (NMR) spectroscopy.

Journal: :Bioresource technology 2013
Brian K Via Sushil Adhikari Steve Taylor

The goal of this study was to characterize the changes in biomass with torrefaction for near infrared reflectance (NIR) and attenuated total reflectance Fourier transform infrared (ATR-FTIR) spectroscopy for sweetgum, loblolly pine, and switchgrass. Calibration models were built for the prediction of proximate analysis after torrefaction. Two dimensional (2D) correlation spectroscopy between NI...

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