Results 21 to 30 of about 2,423 (75)

Radon kinetics in a natural indoor radon chamber

Science of The Total Environment, 2020
An unusual 180 m3 storage room in the basement of a two-story laboratory building is unventilated, and separated from occupiable rooms by double steel doors. The space completely borders on soil through the concrete floor and two of its concrete walls.
Long Kiu Chung, Loren A. Mata, Marco A. Carmona, Nasser Ali M. Shubayr, Qingzhi Zhou, Yongjun Ye, Kimberlee J. Kearfott   +6 more
openaire   +4 more sources

Infinite measure~preserving~transformations with Radon MSJ [PDF]

arXiv, 2015
We introduce concepts of Radon MSJ and Radon disjointness for infinite Radon measure preserving homeomorphisms of the locally compact Cantor space. We construct an uncountable family of pairwise Radon disjoint infinite Chacon like transformations. Every such transformation is Radon strictly ergodic, totally ergodic, asymmetric (not isomorphic to its ...
arxiv  

Radon in caves

International Journal of Speleology, 2005
The physical characteristics of radon are reported as well as its sources,the transport in rock and its behaviour in caves. Then,the instruments,both active and passive, used for the measurement of radon concentration are discussed by taking into accounttheir respective advantages and disadvantages for the use in the cave environment.
openaire   +5 more sources

Statics Preserving Sparse Radon Transform [PDF]

arXiv, 2017
This paper develops a Statics Preserving Sparse Radon transform (SPSR) algorithm.The de-coloration power of Radon basis functions depends on different factors. The most important one is statics. Statics decrease the sparsity of Radon models. To tackle this problem, it is necessary to include statics into the Radon bases functions.
arxiv  

Study on radon and radium concentrations in drinking water in west region of Iran [PDF]

arXiv, 2011
One of the most important characterizations of social health is existence the availability of safe drinking water. Since one of the sources of water contamination is nuclear contamination from radon gas, so in this research radon 222 concentration levels in water supplies in the Toyserkan (a region located in the west of Iran) is investigated.
arxiv  

On weakly Radon-Nikodým compact spaces [PDF]

arXiv, 2015
A compact space is said to be weakly Radon-Nikod\'ym if it is homeomorphic to a weak*-compact subset of the dual of a Banach space not containing an isomorphic copy of $\ell_1$. In this work we provide an example of a continuous image of a Radon-Nikod\'ym compact space which is not weakly Radon-Nikod\'ym.
arxiv  

Radon

, 2019
Radon isotopes (222Rn, 220Rn) are noble, naturally occurring radioactive gases. They originate from the alpha decay of radium isotopes (226Ra, 224Ra), which occur in most materials in the environment, i.e. soil, rocks, raw and building materials. Radon is also found in ground and tap water. The two radon isotopes are chemically identical, but they have
openaire   +3 more sources

An Inversion Formula for the Gaussian Radon Transform for Banach Spaces [PDF]

arXiv, 2013
We provide a disintegration theorem for the Gaussian Radon transform Gf on Banach spaces and use the Segal-Bargmann transform on abstract Wiener spaces to find a procedure to obtain f from its Gaussian Radon transform Gf.
arxiv  

Radon transform and curvature [PDF]

Proceedings of the conference `75 years of Radon transform', Vienna 1992, International Press, Cambridge, MA, (1994), 249--251, 1992
We interpret the setting for a Radon transform as a submanifold of the space of generalized functions, and compute its extrinsic curvature: it is the Hessian composed with the Radon transform.
arxiv