Results 41 to 50 of about 820,423 (413)

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  

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

Biochemistry Characterization of the Leaf of Morinda Lucida: Prospects for Environmentally-Friendly Steel-Rebar Corrosion-Protection in Aggressive Medium [PDF]

open access: yes, 2015
This paper employs atomic absorption spectroscopy (AAS), Fourier transform infrared spectroscopy (FTIR) and phytochemical screening methods for biochemical characterisation of the inorganic and organic constituents of the leaf of Morinda lucida.
Abdulrahman   +13 more
core   +1 more source

Monitoring wine aging with Fourier transform infrared spectroscopy (FT-IR)

open access: yesBIO Web of Conferences, 2015
Oak wood has commonly been used in wine aging but recently other wood types such as Acacia and Chestnut, have attracted the interest of the researchers due to their possible positive contribution to wine quality. However, only the use of oak and chestnut
Basalekou Marianthi   +6 more
doaj   +1 more source

Protocol for bacterial typing using Fourier transform infrared spectroscopy

open access: yesSTAR Protocols, 2023
Summary: The Fourier transform infrared (FT-IR) signals obtained from bacterial samples are specific and reproducible, making FT-IR an efficient tool for bacterial typing at a subspecies level.
Huayan Yang   +13 more
doaj  

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

A Spectroscopic Study of Rhodopsin Alpha-Helix Orientation [PDF]

open access: yes, 1980
Polarized Fourier transform infrared spectroscopy and far ultraviolet circular dichroism of oriented multilamellar films of photoreceptor membranes indicate rhodopsin alpha-helices are predominantly oriented perpendicular to the bilayer ...
Clark, N.A.   +3 more
core   +1 more source

Herbal Medicine Characterization Perspectives Using Advanced FTIR Sample Techniques – Diffuse Reflectance (DRIFT) and Photoacoustic Spectroscopy (PAS)

open access: yesFrontiers in Plant Science, 2020
This study demonstrates the significant potential of the Fourier transform infrared spectroscopy (FTIR) sampling methods: cantilever-enhanced Fourier transform infrared photoacoustic spectroscopy (FTIR PAS) and diffuse reflectance infrared spectroscopy ...
Agnese Brangule   +2 more
doaj   +1 more source

The adsorptive removal of a cationic drug from aqueous solution using poly (methacrylic acid) hydrogels [PDF]

open access: yes, 2014
This study describes adsorptive removal of the antibiotic drug ciprofloxacin hydrochloride from simulated water using poly(methacrylic acid) (PMAA) as adsorbent. The adsorbent was characterised by various instrumental techniques such as X-ray diffraction
Bajpai, SK, Chand, N, Mahendra, M
core   +2 more sources

Optical frequency comb Fourier transform cavity ring-down spectroscopy [PDF]

open access: yesarXiv, 2022
We demonstrate broadband and sensitive cavity ring-down spectroscopy using a near infrared frequency comb and a time-resolved Fourier transform spectrometer. The cavity decays are measured simultaneously and spectrally sorted, leading to purely exponential decays for each spectral element.
arxiv  

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