Results 11 to 20 of about 104,817 (268)

Non-destructive Detection of Sesame Oil Adulteration by Portable FT-NIR, FT-MIR, and Raman Spectrometers Combined with Chemometrics

open access: yesJournal of the Turkish Chemical Society, Section A: Chemistry, 2021
Edible oils are often adulterated with fixed oils because of their high quality and price. Sesame oil is prone to adulteration due to its high commodity value and popularity.
Ahmed MENEVSEOGLU
doaj   +1 more source

Chemometric Tools for NIRS and NIR Hyperspectral Imaging

open access: yesBulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca. Agriculture, 2012
Nowadays in agriculture, new analytical tools based on spectroscopic technologies are developed. Near Infrared Spectroscopy (NIRS) is a well known technology in the agricultural sector allowing the acquisition of chemical information from the samples with a large number of advantages, such as: easy to use tool, fast and simultaneous analysis of several
Dale, Laura   +6 more
openaire   +3 more sources

NIR-to-visible and NIR-to-NIR upconversion in lanthanide doped nanocrystalline GdOF with trigonal structure [PDF]

open access: yesOptical Materials, 2011
Abstract Codoped Er 3+ /Yb 3+ , Tm 3+ /Yb 3+ , Ho 3+ /Yb 3+ and triply doped Er 3+ /Tm 3+ /Yb 3+ gadolinium oxyfluoride nanoparticles were prepared in aqueous solution by a simple coprecipitation method and a suitable heat treatment at 500 °C. From the experimental X-Ray powder diffraction patterns, a Rietveld analysis was carried out and it was ...
PASSUELLO, Tiziana   +7 more
openaire   +1 more source

Discrimination of Gentiana and Its Related Species Using IR Spectroscopy Combined with Feature Selection and Stacked Generalization

open access: yesMolecules, 2020
Gentiana, which is one of the largest genera of Gentianoideae, most of which had potential pharmaceutical value, and applied to local traditional medical treatment.
Tao Shen, Hong Yu, Yuan-Zhong Wang
doaj   +1 more source

Transparent functional nanocomposite films based on octahedral metal clusters: synthesis by electrophoretic deposition process and characterization [PDF]

open access: yesRoyal Society Open Science, 2019
Transparent optical thin films have recently attracted a growing interest for functional window applications. In this study, highly visible transparent nanocomposite films with ultraviolet (UV)-near-infrared (NIR)-blocking capabilities are reported. Such
Ngan Thi Kim Nguyen   +12 more
doaj   +1 more source

NIR Reflection Augmentation for DeepLearning-Based NIR Face Recognition [PDF]

open access: yesSymmetry, 2019
Face recognition using a near-infrared (NIR) sensor is widely applied to practical applications such as mobile unlocking or access control. However, unlike RGB sensors, few deep learning approaches have studied NIR face recognition. We conducted comparative experiments for the application of deep learning to NIR face recognition. To accomplish this, we
Hoon Jo, Whoi-Yul Kim
openaire   +1 more source

Identification of mechanical damage in the 'Fuji' apple cv. using artificial hyperspectral vision

open access: yesDyna, 2019
One problem in the post-harvest phase of apples is the mechanical impact damage; its identification prevents quality issues during storage. The objective was to identify the wavelengths at which the damage is detected early in apples of the 'Fuji ...
Oscar Leonardo García Navarrete   +2 more
doaj   +1 more source

Determination of Total Flavonoid Content in Medicinal Plant Leaves Powder Using Infrared Spectroscopy and Chemometrics

open access: yesIndonesian Journal of Chemistry, 2020
Flavonoid is phenolic compounds consisting of fifteen carbon atoms and is commonly found in plants. Infrared (IR) spectroscopy combined with chemometrics, has been developed for a simple analysis of flavonoid in the medicinal plant leaves powder.
Lestyo Wulandari   +2 more
doaj   +1 more source

Decoding Vigilance with NIRS

open access: yesPLoS ONE, 2014
Sustained, long-term cognitive workload is associated with variations and decrements in performance. Such fluctuations in vigilance can be a risk factor especially during dangerous attention demanding activities. Functional MRI studies have shown that attentional performance is correlated with BOLD-signals, especially in parietal and prefrontal ...
Bogler, C.   +3 more
openaire   +5 more sources

Near-infrared light spectroscopy and stimulation in cognitive neuroscience: the need for an integrative view?

open access: yesJournal of Integrative Neuroscience, 2021
Near-infrared spectroscopy (NIRS) has been largely used in neuroscience as an alternative non-invasive neuroimaging technique, primarily to measure the oxygenation levels of cerebral haemoglobin.
Matteo Martini   +1 more
doaj   +1 more source

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