Results 31 to 40 of about 32,643 (235)

Four nearby L dwarfs [PDF]

open access: yes, 1999
We present spectroscopic, photometric and astrometric observations of four bright L dwarfs identified in the course of the 2MASS near-infrared survey. Our spectroscopic data extend to wavelengths shortward of 5000\AA in the L0 dwarf 2MASSJ0746+2000 and ...
A. J. Burgasser   +15 more
core   +3 more sources

An analysis of the shapes of interstellar extinction curves. VII Milky Way spectrophotometric optical-through-ultraviolet extinction and its R-dependence [PDF]

open access: yes, 2019
We produce a set of 72 NIR-through-UV extinction curves by combining new Hubble Space Telescope/STIS optical spectrophotometry with existing International Ultraviolet Explorer spectrophotometry (yielding gapless coverage from 1150 to 10000 ?) and NIR ...
Bohlin, Ralph   +4 more
core   +4 more sources

Transmission enhancement through square coaxial apertures arrays in metallic film: when leaky modes filter infrared light

open access: yes, 2014
We consider arrays of square coaxial apertures in a gold layer and study their diffractive behavior in the far infrared region. These structures exhibit a resonant transmission enhancement that is used to design tunable bandpass filters.
Bedu, Frédéric   +8 more
core   +3 more sources

An infrared-submillimeter study of star-forming regions selected by the ISOSS 170um survey

open access: yes, 2008
Using the ISOPHOT Serendipity Survey (ISOSS) at 170um a sample of galactic star-forming regions exhibiting very cold dust temperatures (< 20 K) and high masses (> 100 M_sun) has been established.
Beuther   +43 more
core   +1 more source

Characterizing the IYJ Excess Continuum Emission in T Tauri Stars [PDF]

open access: yes, 2011
We present the first characterization of the excess continuum emission of accreting T Tauri stars between optical and near-infrared wavelengths. With nearly simultaneous spectra from 0.48 to 2.4 microns acquired with HIRES and NIRSPEC on Keck and SpeX on
Akeson   +46 more
core   +3 more sources

L-cysteine modified silver nanoparticles for selective and sensitive colorimetric detection of vitamin B1 in food and water samples

open access: yesHeliyon, 2020
The use of L-cysteine modified silver nanoparticles (Cys-capped AgNPs) as a colorimetric probe for determination of vitamin B1 (thiamine) is described in the present work.
Beeta Rani Khalkho   +6 more
doaj   +1 more source

Quantitative analysis of WC stars: Constraints on neon abundances from ISO/SWS spectroscopy [PDF]

open access: yes, 2000
Neon abundances are derived in four Galactic WC stars -- gamma Vel (WR11, WC8+O7.5III), HD156385 (WR90, WC7), HD192103 (WR135, WC8), and WR146 (WC5+O8) - using mid-infrared fine structure lines obtained with ISO/SWS.
A. J. Willis   +77 more
core   +2 more sources

Assessment of Absorption of Glycated Nail Proteins in Patients with Diabetes Mellitus and Diabetic Retinopathy

open access: yesMedicina, 2020
Background and objectives: Glycation occurs in a variety of human tissues and organs. Knowledge about the relationship between predictive biochemical factors such as absorption of glycated nail proteins and severity of type 2 diabetes mellitus (DM) and ...
Ieva Jurgeleviciene   +4 more
doaj   +1 more source

Fully Bio‐Based Gelatin Organohydrogels via Enzymatic Crosslinking for Sustainable Soft Strain and Temperature Sensing

open access: yesAdvanced Functional Materials, EarlyView.
Enzymatically crosslinked gelatin‐based organohydrogels, fabricated through a fully bio‐based and scalable process, exhibit exceptional strain and temperature sensing capabilities with minimal interference from environmental humidity. These transparent, stretchable, and ionically conductive materials operate without synthetic fillers or dopants.
Pietro Tordi   +7 more
wiley   +1 more source

A spectroscopic examination of accretion diagnostics for near solar mass stars in IC 348 [PDF]

open access: yes, 2008
High-resolution optical and moderate-resolution near-infrared spectra were obtained for 40 near solar mass (~2.0-0.5 M⊙) members of the 2-3 Myr old cluster IC 348 in order to examine established accretion diagnostics and the coupling between inner disk ...
Dahm, S. E.
core   +1 more source

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