Results 11 to 20 of about 260,463 (262)

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

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

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.
openaire   +3 more sources

Mid-infrared cross-comb spectroscopy

open access: yesNature Communications, 2023
The authors introduce and demonstrate cross-comb spectroscopy in the mid-infrared as a variant of dual-comb spectroscopy. It provides enhanced performance and allows mid-infrared spectral information to be obtained by near-infrared detection.
Mingchen Liu   +5 more
doaj   +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

Selective Enhancement of Photoresponse with Ferroelectric‐Controlled BP/In2Se3 vdW Heterojunction

open access: yesAdvanced Science, 2023
Owing to the large built‐in field for efficient charge separation, heterostructures facilitate the simultaneous realization of a low dark current and high photocurrent.
Jian Wang   +13 more
doaj   +1 more source

Near-infrared spectroscopy

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   +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

Kinematical and dynamical properties of recently discovered bulge and disc star clusters with WINERED

open access: yesAstronomy & Astrophysics
Context. Galactic globular clusters are a very important tool in explaining the characteristics of the Milky Way. Therefore it is essential to determine the kinematical and dynamical properties of the new star cluster candidates, especially at the low ...
Petralia Ilaria   +10 more
doaj   +1 more source

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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