Results 21 to 30 of about 595,355 (327)

Discrimination capacity analysis of FTIR-PCA and EEM-PARAFAC on dandelion tissues extracts

open access: yesFood Innovation and Advances, 2023
Dandelion root contains triterpenoids, polyphenols and flavonoids, dandelion leaf is rich in polyphenols, flavonoids, flavonoids glycosides, and dandelion flower mainly contains flavonoids, among other substances.
Guoqing Li, Hui Zou, Yilun Chen
doaj   +1 more source

Quantum Fourier-transform infrared spectroscopy in the fingerprint region [PDF]

open access: yes, 2021
Harnessing the quantum interference of photon-pair generation processes, infrared quantum absorption spectroscopy (IRQAS) can extract the infrared optical properties of a sample through visible or near-infrared photon detection without the need for an infrared optical source or detector, which has been an obstacle for higher sensitivity and ...
arxiv   +1 more source

FOURIER TRANSFORM INFRARED SPECTROSCOPY TECHNIQUE FOR DETECTION OF HONEY AUTHENTICATION [PDF]

open access: yesArab Universities Journal of Agricultural Sciences, 2015
Physico-chemical properties of honey and honey samples adulterated with glucose or sucrose were determined. Total soluble solids (TSS), pH and electrical conductivity of honey and its adulterated samples ranged between (84.10-84.50%), (3.80-4.63) and (11.
Mehaya, F. M.   +3 more
doaj   +1 more source

Mid-infrared supercontinuum-based Fourier transform spectroscopy for plasma analysis

open access: yesScientific Reports, 2022
Broadband mid-infrared (MIR) spectroscopy is a well-established and valuable diagnostic technique for reactive plasmas. Plasmas are complex systems and consist of numerous (reactive) types of molecules; it is challenging to measure and control reaction ...
R. Krebbers   +10 more
doaj   +1 more source

PRE-SLAUGHTER STRESS ESTIMATION BY FOURIER TRANSFORM INFRARED SPECTROSCOPY ANALYSIS

open access: yesJournal of the Indonesian Tropical Animal Agriculture, 2015
The objective of the study was to analyze the potential of fourier transform infrared (FTIR) asstress estimation instrument through measurement of catecholamine (CA) and cortisol (CO) levels byinvasive and non-invasive methods.
S. Widiyanto   +3 more
doaj   +1 more source

Fourier transform infrared spectroscopy and elastic properties of Mg1-xCdxFe2O4 ferrite systems [PDF]

open access: yesSongklanakarin Journal of Science and Technology (SJST), 2019
Cadmium substituted magnesium ferrites were synthesized by a low-cost solid-state method. The cubic structure in homogenous state was realized by X-ray diffraction analysis.
Satyappa Laxman Galagali   +6 more
doaj   +1 more source

High-speed Fourier-transform infrared spectroscopy with phase-controlled delay line [PDF]

open access: yes, 2020
Fourier-transform infrared spectroscopy (FTIR) is the golden standard of mid-infrared (MIR) molecular spectroscopic analysis through optically-encoded vibrational signatures. Michelson-type FTIR and MIR dual-comb spectrometers allow us to simultaneously investigate multiple molecular species via the broadband and high-resolution spectroscopic ...
arxiv   +1 more source

Investigation of modified bitumen binders via Fourier-transform infrared spectroscopy

open access: yesТонкие химические технологии, 2020
Objectives. This study evaluates the effect of the modification process on the group composition of bitumen and bitumen binders containing rubber powder and hybrid modifier that is based on styrene–butadiene thermoplastic elastomer and rubber crumb.
I. V. Gordeeva   +4 more
doaj   +1 more source

Photoacoustic phase-controlled Fourier-transform infrared spectroscopy [PDF]

open access: yesarXiv, 2022
We demonstrate a 13-fold speed improvement in broadband cantilever-enhanced photoacoustic spectroscopy (CEPAS) by combining it with phase-controlled Fourier-transform spectroscopy (PC-FTS) instead of traditional Fourier-transform infrared spectroscopy (FTIR).
arxiv  

An evaluation of IASI-NH3 with ground-based Fourier transform infrared spectroscopy measurements [PDF]

open access: yesAtmospheric Chemistry and Physics, 2016
Global distributions of atmospheric ammonia (NH3) measured with satellite instruments such as the Infrared Atmospheric Sounding Interferometer (IASI) contain valuable information on NH3 concentrations and variability in regions not yet covered by ...
E. Dammers   +28 more
doaj   +1 more source

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