Results 31 to 40 of about 711,060 (330)

The Unusual Spectral Energy Distribution of a Galaxy Previously Reported to be at Redshift 6.68 [PDF]

open access: yes, 2000
Observations of distant galaxies are important both for understanding how galaxies form and for probing the physical conditions of the universe at the earliest epochs.
A Fernández-Soto   +9 more
core   +2 more sources

The Anomalous Influence of Spectral Resolution on Pulsed THz Time Domain Spectroscopy under Real Conditions

open access: yesSensors, 2017
We have studied the spectral resolution influence on the accuracy of the substance detection and identification at using a broadband THz pulse measured under real conditions (at a distance of more than 3 m from a THz emitter in ambient air with a ...
Vyacheslav A. Trofimov   +1 more
doaj   +1 more source

Line-of-sight geometrical and instrumental resolution effects on intensity perturbations by sausage modes [PDF]

open access: yes, 2013
Diagnostics of MHD waves in the solar atmosphere is a topic which often encounters problems of interpretation, due partly to the high complexity of the solar atmospheric medium.
Antolin, Patrick, Van Doorsselaere, Tom
core   +2 more sources

Evidence of the Amino Acids Tyrosine and Phenylalanine in the Interstellar Material of IC348 in Perseus

open access: yesLife
We employed data from the Spitzer Space Telescope to investigate the presence of the aromatic amino acids tyrosine and phenylalanine in the interstellar gas of the young star cluster IC 348.
Susana Iglesias-Groth   +3 more
doaj   +1 more source

Infrared Spectroscopy of RNA Nucleosides in a Wide Range of Temperatures

open access: yesLife
The RNA world hypothesis suggests that early cellular ancestors relied solely on RNA molecules for both genetic information storage and cellular functions.
Susana Iglesias-Groth   +2 more
doaj   +1 more source

NEAR-INFRARED LINE IDENTIFICATION IN TYPE Ia SUPERNOVAE DURING THE TRANSITIONAL PHASE [PDF]

open access: yes, 2014
We present near-infrared synthetic spectra of a delayed-detonation hydrodynamical model and compare them to observed spectra of four normal Type Ia supernovae ranging from day +56.5 to day +85. This is the epoch during which supernovae are believed to be
B. Friesen   +6 more
semanticscholar   +1 more source

Spectuner: A Framework for Automated Line Identification of Interstellar Molecules

open access: yesThe Astrophysical Journal Supplement Series
Interstellar molecules, which play an important role in astrochemistry, are identified using observed spectral lines. Despite the advent of spectral analysis tools in the past decade, the identification of spectral lines remains a tedious task that ...
Yisheng Qiu   +6 more
doaj   +1 more source

Computer Aided Identification of an Air Heating System

open access: yesMeasurement + Control, 1986
A system testing and identification package has been developed on an HP1000 minicomputer. The package contains components to allow the user to synthesise test signals, conduct tests on on-line systems, spectral analyse system responses and derive ...
R M Mercer, S G Mailey
doaj   +1 more source

New Methods for Finding Activity-sensitive Spectral Lines: Combined Visual Identification and an Automated Pipeline Find a Set of 40 Activity Indicators [PDF]

open access: yesAstronomical Journal, 2018
Starspots, plages, and activity cycles cause radial velocity variations that can either mimic planets or hide their existence. To verify the authenticity of newly discovered planets, observers may search for periodicity in spectroscopic activity indices ...
Alexander W. Wise   +3 more
semanticscholar   +1 more source

Organoids in pediatric cancer research

open access: yesFEBS Letters, EarlyView.
Organoid technology has revolutionized cancer research, yet its application in pediatric oncology remains limited. Recent advances have enabled the development of pediatric tumor organoids, offering new insights into disease biology, treatment response, and interactions with the tumor microenvironment.
Carla Ríos Arceo, Jarno Drost
wiley   +1 more source

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