Results 31 to 40 of about 412,293 (160)

Data-driven evaluation of background radiation safety using machine learning and statistical analysis [PDF]

open access: yesBig Data and Computing Visions
The entire globe is radioactive naturally, and humans are constantly exposed to background radiation from cosmic rays and the radioactive materials in their environment. The concentration and effects of background radiation can vary based on geographical
Muhammad Abid, Muhammad Shahid
doaj   +1 more source

Ultraviolet Background Radiation

open access: yesAnnual Review of Astronomy and Astrophysics, 1973
The results are reported of observations in narrow bands centered on 1115, 1425, and 1446 A of the flux from an empty high-galactic-latitude region and from several stars. The observations had been obtained with the aid of three ultraviolet-sensitive Geiger counters which were carried on an Aerobee-150 rocket launched from the White Sands missile ...
openaire   +1 more source

Background Radiation

open access: yes, 1993
We present a short overview on the extragalactic background radiation from radio to X-rays, with an eye to the relation to galaxy formation and emphasizing on astrophysical backgrounds (as opposed to cosmological). As the radio background, the wealth of data on source counts make possible reliable estimations of the contribution from extragalactic ...
De Zotti, G.   +4 more
openaire   +2 more sources

Spectrum of the microwave background radiation [PDF]

open access: yesPhilosophical Transactions of the Royal Society of London. Series A, Mathematical and Physical Sciences, 1982
Abstract A review is given of the present status of measurements of the spectrum of the microwave background. Factors that limit experimental accuracy are discussed with particular reference to high-frequency measurements. A selection of the available measurements yields a data set that is reasonably consistent with the black-body ...
openaire   +3 more sources

The fallacy of comparing diagnostic radiation with background radiation; and the need to learn from past mistakes

open access: yesSouth African Journal of Radiology, 2010
The subject of radiation exposure for diagnostic purposes is currently a ‘hot’ topic, and it is appropriate that the debate around this issue is given exposure in the pages of the SAJR.
D J Emby
doaj   +1 more source

Design and Analysis of a Moon-Based Earth-Radiation Measurement System

open access: yesRemote Sensing
This research project envisions using a lunar observation platform to measure the full-wave (0.2~100 μm) and shortwave (0.2~4.3 μm) radiation of the Earth, achieving an accurate estimation of the overall radiation budget of the Earth.
Shuqi Li   +9 more
doaj   +1 more source

background radiation

open access: yes, 2014
Citation: 'background radiation' in the IUPAC Compendium of Chemical Terminology, 3rd ed.; International Union of Pure and Applied Chemistry; 2006. Online version 3.0.1, 2019. 10.1351/goldbook.B00580 • License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International for individual terms.
openaire   +2 more sources

Assessment of gross Alpha and beta radioactivity in surface water from Rampal Upazila, Bangladesh: A baseline study [PDF]

open access: yesKragujevac Journal of Science
This study presents the first radiological survey of surface water in Rampal Upazila, located in Bangladesh's Bagerhat District, where no prior radiation monitoring data have been reported. Water samples were collected from 10 administrative unions, each
Živković Milena P.   +4 more
doaj   +1 more source

COSMIC TACHYON BACKGROUND RADIATION [PDF]

open access: yesInternational Journal of Modern Physics A, 1999
The equilibrium statistical mechanics of a background radiation of superluminal particles is investigated, based on a vectorial wave equation for tachyons of the Proca type. The partition function, the spectral energy density, and the various thermodynamic variables of an ideal Bose gas of tachyons in an open Robertson–Walker cosmology are derived ...
openaire   +2 more sources

The Extragalactic Background Radiation —1989 [PDF]

open access: yesSymposium - International Astronomical Union, 1990
This symposium has brought back many happy memories of the time 20 years ago when Rashid Sunyaev and I surveyed what was known about the extragalactic background radiation at that time. In one of our papers of 1969, we published a simple representation of the extragalactic background radiation spectrum, as it was known then (Figure 1).
openaire   +1 more source

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