Zobrazeno 1 - 10
of 26
pro vyhledávání: '"Kirk K. Nielson"'
Autor:
Kirk K. Nielson, Vern C. Rogers
Publikováno v:
Managing Soils in an Urban Environment
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8e7d86d7e388d81f58884b3b771e4e8d
https://doi.org/10.2134/agronmonogr39.c10
https://doi.org/10.2134/agronmonogr39.c10
Publikováno v:
Health Physics. 73:696-699
The RAETRAD model was generalized to characterize radon generation and movement from soils and building materials into multi-level buildings with basements or crawl spaces. With the generalization, the model retains its original simplicity and ease o
Autor:
Kirk K. Nielson, Vern C. Rogers
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 353:519-523
The fraction of radon (222Rn) gas emanated from soils and building materials is critical in estimating radiation source strengths for human dosimetry. A sensitive method has been developed to measure emanation fractions (E) from sample radon effluent
Publikováno v:
Health Physics. 67:363-377
Remediation planning and 222Rn-related construction zoning require knowledge of how close and strong 226Ra sources can be in different foundation soils under different groundwater conditions without excessively elevating indoor 222Rn levels. A two-di
Publikováno v:
Journal of Food Composition and Analysis. 4:285-292
Arsenic was detected in 22 of 525 samples of fruits, vegetables, grain products, fast foods, dairy products, and seafoods analyzed by a multielement X-ray fluorescence method. The arsenic occurrences corresponded almost completely and exclusively wit
Publikováno v:
Journal of Food Composition and Analysis. 4:39-51
Concentrations of Mg, P, S, Cl, K, Ca, Mn, Fe, Cu, and Zn were measured in quadruplicate for 190 samples of 72 different fruits, vegetables, and grain products by a multielement X-ray fluorescence (XRF) method. Validation measurements on standard ref
Publikováno v:
Health physics. 68(6)
This note reports radon gas pore diffusion coefficient measurements for residential concretes from Florida, ranging in age from 12 y to 45 y. The coefficients ranged from 1.5 x 10{sup -7} m{sup 2} s{sup -1} to 5.5 x 10{sup -7} m{sup 2} s{sup -1}. On
Publikováno v:
Health physics. 67(3)
Radon gas diffusion through concrete can be a significant mechanism for radon entry into dwellings. Measurements of radon diffusion coefficients in the pores of residential concretes ranged from 2.1 x 10(-8) m2 s-1 to 5.2 x 10(-7) m2 s-1. The pore di
Autor:
Kirk K. Nielson
Publikováno v:
Journal of the American Chemical Society. 121:490-490
Publikováno v:
Analytical Chemistry. 50:1032-1040
The concentrations of 43 major, minor, and trace elements were measured by x-ray fluorescence, atomic absorption, and instrumental neutron activation for nine well-defined size fractions, with mass median diameters of 0.5 ..mu.. to 50 ..mu..m, of fly