Results 11 to 20 of about 529,607 (296)

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

NIR Calibrations for Soybean Seeds and Soy Food Composition Analysis: Total Carbohydrates, Oil, Proteins and Water Contents [v.2] [PDF]

open access: yes, 2011
Conventional chemical analysis techniques are expensive, time consuming, and often destructive. The non-invasive Near Infrared (NIR) technology was introduced over the last decades for wide-scale, inexpensive chemical analysis of food and crop seed ...
Doina M. Costescu   +4 more
core   +2 more sources

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

NIR‐NIR‐Aufkonvertierung in molekularen Chrom‐Ytterbium‐Salzen [PDF]

open access: yesAngewandte Chemie, 2020
AbstractPhotonen‐Aufkonvertierung in hetero‐oligonuklearen, Metallkomplex‐Architekturen mit organischen Liganden ist ein interessantes, aber bisher selten beobachtetes Phänomen, trotz des großen Potentials sowohl aus Sicht der Grundlagenforschung als auch aus der Anwendungsperspektive. Nun wurde ein neues photonisches Material aus molekularen Chrom(III)
Jens Kalmbach   +7 more
openaire   +1 more source

Voltage-controlled wavelength conversion by terahertz electro-optic modulation in double quantum wells [PDF]

open access: yes, 2002
An undoped double quantum well (DQW) was driven with a terahertz (THz) electric field of frequency \omega_{THz} polarized in the growth direction, while simultaneously illuminated with a near-infrared (NIR) laser at frequency \omega_{NIR}.
A. Huntington   +5 more
core   +2 more sources

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

Determination of Soybean Oil, Protein and Amino Acid Residues in Soybean Seeds by High Resolution Nuclear Magnetic Resonance (NMRS) and Near Infrared (NIRS) [PDF]

open access: yes, 2012
A detailed account is presented of our high resolution nuclear magnetic resonance (HR-NMR) and near infrared (NIR) calibration models, methodologies and validation procedures, together with a large number of composition analyses for soybean seeds.
Doina Costescu   +5 more
core   +2 more sources

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

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