Results 11 to 20 of about 1,421,366 (338)

The Dust Attenuation Law in Galaxies [PDF]

open access: yesAnnual Review of Astronomy and Astrophysics, 2020
Understanding the properties of dust attenuation curves in galaxies and the physical mechanisms that shape them are among the fundamental questions of extragalactic astrophysics, with great practical significance for deriving the physical properties of ...
S. Salim, D. Narayanan
semanticscholar   +1 more source

Developing MXenes from Wireless Communication to Electromagnetic Attenuation

open access: yesNano-Micro Letters, 2021
Highlights The industrial application and foundational research of MXenes at gigahertz frequency are systematically reviewed. The design principles of “lightweight, wide, and strong” are specifically highlighted.
P. He, M. Cao, W. Cao, Jie Yuan
semanticscholar   +1 more source

Low-Attenuation Noncalcified Plaque on Coronary Computed Tomography Angiography Predicts Myocardial Infarction

open access: yesCirculation, 2020
Supplemental Digital Content is available in the text. Background: The future risk of myocardial infarction is commonly assessed using cardiovascular risk scores, coronary artery calcium score, or coronary artery stenosis severity.
M. Williams   +25 more
semanticscholar   +1 more source

Dust Attenuation Curves in the Local Universe: Demographics and New Laws for Star-forming Galaxies and High-redshift Analogs [PDF]

open access: yes, 2018
We study the dust attenuation curves of 230,000 individual galaxies in the local universe, ranging from quiescent to intensely star-forming systems, using GALEX, SDSS, and WISE photometry calibrated on the Herschel ATLAS.
S. Salim, M. Boquien, Janice C. Lee
semanticscholar   +1 more source

Disturbance/Uncertainty Estimation and Attenuation Techniques in PMSM Drives—A Survey

open access: yesIEEE transactions on industrial electronics (1982. Print), 2017
This paper gives a comprehensive overview on disturbance/uncertainty estimation and attenuation (DUEA) techniques in permanent-magnet synchronous motor (PMSM) drives.
Jun Yang   +4 more
semanticscholar   +1 more source

Predicting Depth of Mineral Deposit using Gravity-Density Downward Correlation by Fourier Transform

open access: yesГеофизический журнал, 2016
Residual gravity anomalies are the superposition of effects originating from several interfaces in the subsurface. In downward projection of the anomalies for the determination of the depth of the particular substructure which accounts for the bulk of ...
E. E. Epuh   +2 more
doaj   +1 more source

Attenuated Psychosis Syndrome [PDF]

open access: yesIndian Journal of Psychological Medicine, 2014
Byline: M. Reddy Diagnostic and Statistical Manual of Mental Disorders, 5 [sup]th edition (DSM - 5) included attenuated psychosis syndrome (APS) in Section III under "conditions for further study". The DSM - 5 task force determined that there was insufficient evidence to warrant inclusion of APS as official mental disorder diagnosis in Section II. "The
openaire   +3 more sources

Seismic good quality of the Earth crust of the northern part pf the Ukrainian shield

open access: yesГеофизический журнал, 2016
According to the records of superficial coda-waves from seismic events in the Kriviy Rig area receive value, quality factor (Q), frequency parameter (n) and attenuation factor (δ) of seismic waves in earth's crust of northern part Ukrainian shield have ...
Yu. A. Andrushchenko   +3 more
doaj   +1 more source

Relationship between changes in pericoronary adipose tissue attenuation and coronary plaque burden quantified from coronary computed tomography angiography.

open access: yesEuropean Heart Journal-Cardiovascular Imaging, 2019
AIMS Increased attenuation of pericoronary adipose tissue (PCAT) around the proximal right coronary artery (RCA) from coronary computed tomography angiography (CTA) has been shown to be associated with coronary inflammation and improved prediction of ...
M. Goeller   +18 more
semanticscholar   +1 more source

Attenuation correction in SPECT without attenuation map [PDF]

open access: yes2011 IEEE Nuclear Science Symposium Conference Record, 2011
A method of attenuation correction in Single Photon Emission Computed Tomography (SPECT), based on emission data only is presented. The algorithm uses the well known Helgason-Ludwig consistency conditions. However, it does not attempt to find the attenuation map, but rather the correction factors for the projection data, which makes the problem simpler
openaire   +2 more sources

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