Results 21 to 30 of about 7,706,107 (291)

Spectral Line Depth Variability in Radial Velocity Spectra [PDF]

open access: yes, 2022
Stellar active regions, including spots and faculae, can create radial velocity (RV) signals that interfere with the detection and mass measurements of low mass exoplanets.
Plavchan, Peter   +10 more
core   +1 more source

Building an ensemble learning model for gastric cancer cell line classification via rapid raman spectroscopy

open access: yesComputational and Structural Biotechnology Journal, 2023
Cell misuse and cross-contamination can affect the accuracy of cell research results and result in wasted time, manpower and material resources. Thus, cell line identification is important and necessary.
Kunxiang Liu   +10 more
doaj   +1 more source

A Low-mass line-rich Core Found in Massive Star-forming Region IRAS 16351-4722

open access: yesThe Astrophysical Journal, 2023
We present Atacama Large Millimeter/submillimeter Array subarcsecond-resolution observations of both continuum and molecular lines at 345 GHz toward the massive star-forming region IRAS 16351-4722 (hereafter I16351).
Meizhu Liu   +12 more
doaj   +1 more source

Atomic Iron and Nickel in the Coma of C/1996 B2 (Hyakutake): Production Rates, Emission Mechanisms, and Possible Parents

open access: yesThe Planetary Science Journal, 2021
Two papers recently reported the detection of gaseous nickel and iron in the comae of over 20 comets from observations collected over two decades, including interstellar comet 2I/Borisov.
S. J. Bromley   +6 more
doaj   +1 more source

Computer Models for Musical Instrument Identification [PDF]

open access: yes, 2006
PhDA particular aspect in the perception of sound is concerned with what is commonly termed as texture or timbre. From a perceptual perspective, timbre is what allows us to distinguish sounds that have similar pitch and loudness. Indeed most people are
Chetry, Nicolas D.
core   +3 more sources

Critically Evaluated Atomic Data for the Au iv Spectrum

open access: yesThe Astrophysical Journal Supplement Series, 2023
A spectral investigation of triply ionized gold (Au iv ) has been carried out in the wavelength region of 500–2106 Å. The gold spectra were photographed at the National Institute of Standards and Technology, USA, on a 10.7 m normal incidence vacuum ...
Aashna Zainab   +4 more
doaj   +1 more source

Spectral line-by-line pulse shaping of on-chip microresonator frequency combs [PDF]

open access: yes, 2011
Recently, on-chip comb generation methods based on nonlinear optical modulation in ultrahigh-quality-factor monolithic microresonators have been demonstrated, where two pump photons are transformed into sideband photons in a four-wave-mixing process ...
Lei Chen   +15 more
core   +1 more source

Theory and assessment of an improved power spectral density estimator [PDF]

open access: yes, 1990
This thesis is concerned with the processing of time domain signals received by a single sensor. An example of such signals is the radar return, which is used in one way or another to estimate the power spectral density a frequency representation of ...
Ali, Ali Abbas
core   +3 more sources

Saliva as a first-line diagnostic tool: A spectral challenge for identification of cancer biomarkers [PDF]

open access: yesJournal of Molecular Liquids, 2020
Abstract The paper concentrates on the role of saliva in the early diagnosis of salivary gland tumor. Due to the still not fully understood etiology of head and neck cancer, the fundamental objective of this study is to find tumor markers of salivary gland tumor progression.
Paluszkiewicz, Czeslawa   +7 more
openaire   +2 more sources

Structural patterns in complex networks through spectral analysis [PDF]

open access: yes, 2010
The study of some structural properties of networks is introduced from a graph spectral perspective. First, subgraph centrality of nodes is defined and used to classify essential proteins in a proteomic map.
Estrada, Ernesto
core   +3 more sources

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