Results 51 to 60 of about 922,402 (315)
Rapid, Time-Division Multiplexed, Direct Absorption- and Wavelength Modulation-Spectroscopy
Sensors, 2014 We present a tunable diode laser spectrometer with a novel, rapid time multiplexed direct absorption- and wavelength modulation-spectroscopy operation mode.
Alexander Klein +2 more
doaj +1 more source
Gut alterations in a chronic kidney disease rat model with diet‐induced vascular calcification
FEBS Open Bio, EarlyView.Chronic kidney disease (CKD) patients often suffer from intestinal and/or mineral and bone disorders. Using a rat model, we showed that uremic vascular calcification is associated with gut barrier alterations (decreased gut mucus production and Nlrp6 gene expression, increased gut inflammation), and plasma retention of gut‐origin uremic toxins (indoxyl
Piotr Bartochowski +13 more
wiley +1 more source
Quick Detection of Contaminants Leaching from Polypropylene Centrifuge Tube with Surface Enhanced Raman Spectroscopy and Ultra Violet Absorption Spectroscopy [PDF]
Z. Xu, M. R. Gartia, C. J. Choi, J. Jiang, Y. Chen, B. T.
Cunningham, and G. L. Liu, Journal of Raman Spectroscopy, 42, 1939-1944 2011, 2014 Anomalous surface enhanced Raman scattering (SERS) peaks are identified for liquid sample stored in polypropylene centrifuge tubes (PP tube) for months. We observed the unexpected Raman peaks during experiments for Thiamine Hydrochloride aqueous solution stored in PP tube for two months.
arxiv +1 more source
, 2009 We show that a combination of linear absorption spectroscopy, hyper-Rayleigh scattering, and a theoretical analysis using sum rules to reduce the size of the parameter space leads to a prediction of the two-photon absorption cross-section of the dye ...
F. A. Cotton +9 more
core +1 more source
Diagnostic Potential of Cosmic-Neutrino Absorption Spectroscopy [PDF]
, 2004 Annihilation of extremely energetic cosmic neutrinos on the relic-neutrino background can give rise to absorption lines at energies corresponding to formation of the electroweak gauge boson $Z^{0}$.
A. Liddle +17 more
core +3 more sources
Gas Sensor Based on Photonic Crystal Fibres in the 2ν3 and ν2 + 2ν3 Vibrational Bands of Methane
Sensors, 2009 In this work, methane detection is performed on the 2ν3 and ν2 + 2ν3 absorption bands in the Near-Infrared (NIR) wavelength region using an all-fibre optical sensor.
Jose M. Lopez-Higuera +4 more
doaj +1 more source
FEBS Open Bio, EarlyView.In human monocytic cells THP‐1, a limited uptake of native—not oxidized—LDL/VLDL induced expression of scavenger receptor A and cellular adhesion. Induction was inhibited by lysosomotropic (WR‐1065) and lipophilic (BHT) antioxidants and by siRNAs against ferritinophagy.
Martina Čierna +4 more
wiley +1 more source
Polymer Thin Films as Universal Substrates for Extreme Ultraviolet Absorption Spectroscopy of Molecular Transition Metal Complexes [PDF]
arXiv, 2021 Polystyrene and polyvinyl chloride thin films are explored as sample supports for extreme ultraviolet (XUV) spectroscopy of molecular transition metal complexes. Thin polymer films prepared by slip-coating are flat, smooth, and transmit much more XUV light than silicon nitride windows.
arxiv
Sensors, 2019 We present field deployment results of a portable optical absorption spectrometer for localization and quantification of fugitive methane (CH4) emissions.
Eric J. Zhang +6 more
doaj +1 more source
Characterizing viral samples using machine learning for Raman and absorption spectroscopy
MicrobiologyOpen, 2022 Machine learning methods can be used as robust techniques to provide invaluable information for analyzing biological samples in pharmaceutical industries, such as predicting the concentration of viral particles of interest in biological samples. Here, we
Miad Boodaghidizaji +5 more
doaj +1 more source