Results 31 to 40 of about 1,334,336 (314)

The Spectral Line Shape of Exotic Nuclei [PDF]

open access: yes, 1996
The quadrupole strength function of $^{28}O$ is calculated making use of the SIII interaction, within the framework of continuum-RPA and taking into account collisions among the nucleons (doorway coupling).
E. Vigezzi   +12 more
core   +2 more sources

Spectral theory for nonconservative transmission line networks

open access: yesNetworks and Heterogeneous Media, 2011
The global theory of transmission line networks withnonconservative junction conditions is developed from a spectraltheoretic viewpoint. The rather general junction conditionslead to spectral problems for nonnormal operators.The theory of analytic ...
Robert Carlson
doaj   +1 more source

The Spectral Correlation Function -- A New Tool for Analyzing Spectral-Line Maps [PDF]

open access: yes, 1999
The "spectral correlation function" analysis we introduce in this paper is a new tool for analyzing spectral-line data cubes. Our initial tests, carried out on a suite of observed and simulated data cubes, indicate that the spectral correlation function [
Goodman, Alyssa A.   +3 more
core   +4 more sources

Three-Dimensional Reconstruction with a Laser Line Based on Image In-Painting and Multi-Spectral Photometric Stereo

open access: yesSensors, 2021
This paper presents a multi-spectral photometric stereo (MPS) method based on image in-painting, which can reconstruct the shape using a multi-spectral image with a laser line.
Liang Lu   +4 more
doaj   +1 more source

A method to achieve spectral beam combining based on a novel symmetric grating

open access: yesFrontiers in Physics, 2022
A symmetric grating is proposed to obtain higher output power in spectral beam combination by increasing the number of lasers and spectral utilization. The grating allows laser beams to be incident from both sides of the grating normal to achieve coaxial
Xinmin Fan   +18 more
doaj   +1 more source

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

Analysis of Infrared Spectral Radiance of O2 1.27 μm Band Based on Space-Based Limb Detection

open access: yesRemote Sensing, 2023
The infrared spectral radiance of O2 is of great significance for space-based infrared detection. In this work, based on the demand for near-infrared spectral radiance of O2 limb detection, a method of spectral radiance calculation coupled with an ...
Jingyu Bai   +4 more
doaj   +1 more source

Spectral Power Enhancement in a 100 GHz Photonic Millimeter-Wave Generator Enabled by Spectral Line-by-Line Pulse Shaping

open access: yesIEEE Photonics Journal, 2010
We report generation of high-modulation-depth photonic millimeter-wave (MMW) waveforms by applying line-by-line pulse shaping on a phase-modulated continuous-wave frequency comb.
F.-M. Kuo   +8 more
doaj   +1 more source

Diagnostic features of rutile and cassiterite from heavy mineral concentrate samples, according to the IR microscopy data

open access: yesРуды и металлы
Based on the study of rutile and cassiterite grains, using Fourier transform infrared microscopy, a new method for their determination in heavy mineral concentrate samples has been developed.
Khachatryan G. K., Anashkina N. E.
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

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