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Near-infrared spectroscopy procedure for online determination of sodium and potassium content in low-salt cured hams [PDF]

open access: yes, 2023
Producción CientíficaThis paper reports the development of a near-infrared spectroscopy (NIRS) calibration procedure for the determination of sodium and potassium content in cured ham samples.
Campos Labadíe, María isabel   +2 more
core   +1 more source

A Systematic Review of the Impact of Physical Exercise-Induced Increased Resting Cerebral Blood Flow on Cognitive Functions

open access: yesFrontiers in Aging Neuroscience, 2022
Brain perfusion declines with aging. Physical exercise represents a low-cost accessible form of intervention to increase cerebral blood flow; however, it remains unclear if exercise-induced amelioration of brain perfusion has any impact on cognition.
Maria B. Renke   +7 more
doaj   +1 more source

Nanostructure-enhanced infrared spectroscopy

open access: yesNanophotonics, 2021
While infrared spectroscopy is a powerful technique that provides molecular information such as chemical constituents and chemical structures of analytes, it suffers from low absorption cross-section resulting in low sensitivity and poor signal-to-noise ...
Tanaka Takuo, Yano Taka-aki, Kato Ryo
doaj   +1 more source

Infrared Spectroscopy–Quo Vadis?

open access: yesApplied Sciences, 2022
Given the exquisite capability of direct, non-destructive label-free sensing of molecular transitions, IR spectroscopy has become a ubiquitous and versatile analytical tool.
Michael Hlavatsch   +6 more
doaj   +1 more source

Shock Excitation in Narrow-line Regions Powered by AGN Outflows

open access: yesThe Astrophysical Journal, 2023
Outflows in an active galactic nucleus (AGN) are considered to play a key role in the evolution of the host galaxy through transfer of a large amount of energy.
Misaki Mizumoto   +12 more
doaj   +1 more source

Upconversion time-stretch infrared spectroscopy

open access: yesLight: Science & Applications, 2023
We develop upconversion time-stretch infrared spectroscopy, which enables high-speed and high-resolution broadband mid-infrared spectroscopy with over 1000 spectral elements at a rate of more than 10 MSpectra s−1.
Kazuki Hashimoto   +6 more
doaj   +1 more source

IR action spectroscopy of glycosaminoglycan oligosaccharides [PDF]

open access: yes, 2020
Glycosaminoglycans (GAGs) are a physio- and pharmacologically highly relevant class of complex saccharides, possessing a linear sequence and strongly acidic character.
Freyse, Joanna   +9 more
core   +2 more sources

Metallicities of Classical Cepheids in the Inner Galactic Disk

open access: yesThe Astrophysical Journal, 2023
Metallicity gradients refer to the sloped radial profiles of the metallicities of gas and stars and are commonly seen in disk galaxies. A well-defined metallicity gradient of the Galactic disk is observed particularly well with classical Cepheids, which ...
Noriyuki Matsunaga   +16 more
doaj   +1 more source

Ultrabroadband Tellurium Photoelectric Detector from Visible to Millimeter Wave

open access: yesAdvanced Science, 2022
Ultrabroadband photodetection is of great significance in numerous cutting‐edge technologies including imaging, communications, and medicine. However, since photon detectors are selective in wavelength and thermal detectors are slow in response ...
Wanli Ma   +10 more
doaj   +1 more source

Quantitative macromolecular patterns in phytoplankton communities resolved at the taxonomical level by single-cell Synchrotron FTIR-spectroscopy

open access: yesBMC Plant Biology, 2019
Background Technical limitations regarding bulk analysis of phytoplankton biomass limit our comprehension of carbon fluxes in natural populations and, therefore, of carbon, nutrients and energy cycling in aquatic ecosystems.
Andrea Fanesi   +4 more
doaj   +1 more source

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