Results 1 to 10 of about 2,960,676 (390)

Breakthrough Potential in Near-Infrared Spectroscopy: Spectra Simulation. A Review of Recent Developments

open access: yesFrontiers in Chemistry, 2019
Near-infrared (12,500–4,000 cm−1; 800–2,500 nm) spectroscopy is the hallmark for one of the most rapidly advancing analytical techniques over the last few decades.
Krzysztof B Be, Christian W Huck
exaly   +4 more sources

Upconversion time-stretch infrared spectroscopy [PDF]

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   +2 more sources

Infrared Spectroscopy—Mid-infrared, Near-infrared, and Far-infrared/Terahertz Spectroscopy

open access: yesAnalytical Sciences, 2021
This article aims to overview infrared (IR) spectroscopy. Simultaneously, it outlines mid-infrared (MIR), near-infrared (NIR), and far-infrared (FIR) or terahertz (THz) spectroscopy separately, and compares them in terms of principles, characteristics, advantages, and applications.
Yukihiro Ozaki, Yukihiro Ozaki
openaire   +5 more sources

Near-infrared spectroscopy [PDF]

open access: yesJournal of Neuroanaesthesiology and Critical Care, 2015
Tissue ischaemia can be a significant contributor to increased morbidity and mortality. Conventional oxygenation monitoring modalities measure systemic oxygenation, but regional tissue oxygenation is not monitored.
Virendra Jain, Hari H Dash
doaj   +5 more sources

Leveraging infrared spectroscopy for automated structure elucidation [PDF]

open access: yesCommunications Chemistry
The application of machine learning models in chemistry has made remarkable strides in recent years. While analytical chemistry has received considerable interest from machine learning practitioners, its adoption into everyday use remains limited.
Marvin Alberts   +2 more
doaj   +2 more sources

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

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

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