Zobrazeno 1 - 10
of 83
pro vyhledávání: '"K.K. Nielson"'
Publikováno v:
Environment International, Vol 22, Iss, Pp 471-476 (1995)
Soil radon fluxes were measured at 882 individual locations on undeveloped lands throughout all 67 counties of Florida, and at 112 locations on developed lands in South Central Florida. The fluxes were log-normally distributed, with respective geomet
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2fb6626ba6751d78f4e2db7fdbdd5811
http://www.sciencedirect.com/science/article/pii/S016041209600147X
http://www.sciencedirect.com/science/article/pii/S016041209600147X
Autor:
K.K. Nielson, V.C. Rogers
This report documents the research activities by Rogers and Associates Engineering Corporation on grant DE-FG03-93ER61600 during the funded project period from August 1993 to April 1996. The objective of this research was to characterize the mechanis
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cd3a0e4f5c086f38d90ca23cfc762ba0
https://doi.org/10.2172/263993
https://doi.org/10.2172/263993
This report documents the activities by Rogers and Associates Engineering Corporation personnel in the second year of a grant from the Office of Health and Environmental Research at the US Department of Energy. The project objective is to integrate t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ce2409bc58197aaebbbadafa949e01c3
https://doi.org/10.2172/6922017
https://doi.org/10.2172/6922017
Autor:
K.K. Nielson, S.R. Garcia
Publikováno v:
Advances in X-ray Analysis. 20:497-506
Two methods are described for computing multielement x-ray absorption corrections for aerosol samples collected in IPC-1478 and Whatman 41 filters. The first relies on scatter peak intensities and scattering cross sections to estimate the mass of lig
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::758767e452a478a396fcfbf0b8ee6607
https://doi.org/10.1154/s0376030800012118
https://doi.org/10.1154/s0376030800012118
Autor:
N.A. Wogman, K.K. Nielson
Publikováno v:
Environment International, Vol 4, Iss 4, Pp 313-324 (1980)
An energy-dispersive X-ray fluorescence spectrometer has been developed that provides in situ analyses for thirty elements in the 5 to 50 ppm range (dry weight) in sediments at water depths to 100 m. The analyzer consists of a radionuclide excitation
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9d2c55b8e93a79dd2355ed81cd098319
http://www.sciencedirect.com/science/article/pii/0160412080900835
http://www.sciencedirect.com/science/article/pii/0160412080900835
Autor:
K.K. Nielson, R.W. Sanders
Publikováno v:
Advances in X-ray Analysis. 26:385-390
This chapter describes extended capabilities of the backscatter with fundamental parameter (BFP) method, which was originally applied only to well-defined samples over a more restricted range of compositions. It demonstrates that the BFP calculation
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7ea77478e03ad90f30ccf98b6ada68a7
https://doi.org/10.1154/s0376030800012738
https://doi.org/10.1154/s0376030800012738
Autor:
K.K. Nielson
A FORTRAN computer program is presented for quantitative multielement analysis of spectral data from both isotope- and x-ray tube-excited x-ray fluorescence systems. The program is designed for analysis of pelletized environmental samples (20 to 200
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::61a1079989e6e4f3c30922595e649af0
https://doi.org/10.2172/7213361
https://doi.org/10.2172/7213361
A series of field tests has been conducted during the past year to provide benchmark data on the performance of simple, single-layer earthen covers at thee uranium tailings sites. The performance of the covers was evaluated in terms of their reductio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::90603a63b25f7d4e2b269526370ec367
https://doi.org/10.2172/6421364
https://doi.org/10.2172/6421364
Radon emission from a model open pit uranium mining operation has been estimated by applying radon exhalation fluxes measured in an open pit uranium mine to the various areas of the model mine. The model mine was defined by averaging uranium concentr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ce84558ec79303b8f24a644286ae2c75
https://doi.org/10.2172/6153633
https://doi.org/10.2172/6153633
Autor:
K.K. Nielson, V.C. Rogers
Radon migration in porous, earthen materials is characterized by diffusion in both the air and water components of the system as well as by the interaction of the radon between the air and water. The size distribution and configuration of the pore sp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f361e9205a63756bccc3fbd9c79572bf
https://doi.org/10.2172/6678584
https://doi.org/10.2172/6678584