Results 21 to 30 of about 169,670 (308)

Indexing cerebrovascular health using near-infrared spectroscopy

open access: yesScientific Reports, 2021
Near-infrared spectroscopy (NiRS) is a relatively new technology of brain imaging with its potential in the assessment of cerebrovascular health only recently discovered.
Rashid Afkhami   +4 more
doaj   +1 more source

Near-infrared laser spectroscopy of NiI [PDF]

open access: yesThe Journal of Chemical Physics, 2004
Laser-induced fluorescence spectrum of NiI in the near infrared region of 714–770 nm has been recorded. Seven bands belonging to three electronic transition systems were observed and analyzed: the (0,0), (1,0), and (2,0) bands of [13.3] 2Σ+-A 2Π3/2 system; the (1,1) and (0,1) bands of [13.9] 2Π3/2-X 2Δ5/2 system; and the (0,0) and (1,0) bands of [13.9] 
Ye, J, Tam, WS, Cheung, ASC
openaire   +5 more sources

The use of near infrared (NIR) spectroscopy to improve soil mapping at the farm scale [PDF]

open access: yes, 2008
The creation of fine resolution soil maps is hampered by the increasing costs associated with conventional laboratory analyses of soil. In this study, near infrared (NIR) reflectance spectroscopy was used to reduce the number of conventional soil ...
Söderström, Mats   +2 more
core   +1 more source

Monitoring Detrusor Oxygenation and Hemodynamics Noninvasively during Dysfunctional Voiding

open access: yesAdvances in Urology, 2012
The current literature indicates that lower urinary tract symptoms (LUTSs) related to benign prostatic hyperplasia (BPH) have a heterogeneous pathophysiology. Pressure flow studies (UDSs) remain the gold standard evaluation methodology for such patients.
Andrew J. Macnab   +2 more
doaj   +1 more source

Portable high-end instrument for in-vivo infrared spectroscopy using spread spectrum modulation [PDF]

open access: yes, 2004
Near infrared spectroscopy (NIRS) can be employed to monitor noninvasively and continuously local changes in hemodynamics and oxygenation of human tissues.
Trevisan, S.   +4 more
core   +1 more source

Fourier transform infrared spectroscopy for analysis of kidney stones [PDF]

open access: yesInvestigative and Clinical Urology, 2018
Purpose: To compare the results of a chemical method of kidney stone analysis with the results of Fourier transform infrared (FT-IR) spectroscopy. Materials and Methods: Kidney stones collected between June and October 2015 were simultaneously analyzed ...
Aysha Habib Khan   +3 more
doaj   +1 more source

Near infrared reflectance spectroscopy compared with soil clay and organic matter content for estimating within-field variation in N uptake in cereals [PDF]

open access: yes, 2008
Adjusting fertiliser applications to within-field variations in nitrogen (N) mineralisation during the growing season can increase yields, improve crop quality, reduce costs and decrease nutrient losses to the environment. Predicting such variations at a
Stenberg, Bo   +2 more
core   +1 more source

(INVITED) Recent progress on broadband near-infrared phosphors-converted light emitting diodes for future miniature spectrometers

open access: yesOptical Materials: X, 2019
The development of phosphor-converted technology-based broadband near-infrared light source for miniature spectrometers to perform spectroscopy applications has recently attracted remarkable attention among researchers in the academe and industry.
Veeramani Rajendran   +2 more
doaj   +1 more source

Infrared and Near-Infrared Spectroscopy of Acetylacetone and Hexafluoroacetylacetone [PDF]

open access: yesThe Journal of Physical Chemistry A, 2015
The infrared and near-infrared spectra of acetylacetone, acetylacetone-d8, and hexafluoroacetylacetone are characterized from experiment and computations at different levels. In the fundamental region, the intramolecular hydrogen bonded OH-stretching transition is clearly observed as a very broad band with substantial structure and located at ...
Howard, Daryl L.   +3 more
openaire   +3 more sources

AUTHENTICATION OF WILD AND REARED SEA BASS BY INFRARED SPECTROSCOPY NIRs (NEAR INFRARED REFLECTANCE SPECTROSCOPY)

open access: yesItalian Journal of Food Safety, 2009
The aim of this study was to evaluate NIRs (Near Infrared Reflectance Spectroscopy) performances in the prediction of Farmed vs.Wild production method in European sea bass.
E. Novelli   +6 more
doaj   +1 more source

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