About the necessary thickness of stationary shield in X-ray dental rooms

Autor: V. Yu. Golikov

Publikováno v: Радиационная гигиена, Vol 17, Iss 2, Pp 46-52 (2024)

In the paper, based on the analysis of scientific information regarding the parameters and characteris-tics of radiation fields for three dental X-ray procedures (intraoral radiographs, panoramic radiographs on orthopantomographs and computed tomogra

Externí odkaz: https://doaj.org/article/4cf32bc6939248279b933a84a5e2b7ef

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Scalar Measures of Volatility and Dependence for the Multivariate Models with Applications to Asian Financial Markets

Autor: Sangwhan Kim, Anil K. Bera

Publikováno v: Journal of Risk and Financial Management; Volume 16; Issue 4; Pages: 212

The variance–covariance matrix is a multi-dimensional array of numbers, containing information about the individual variabilities and the pairwise linear dependence of a set of variables. However, the matrix itself is difficult to represent in a co

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b69305e8ab72305889fb3ae3da03dbdd
https://doi.org/10.3390/jrfm16040212

Spatial and Seasonal Variations of Heavy Metal Loads in Uyo Urban Drainage Stream under PS and NPS Pollution

Autor: O. E. Essien

Publikováno v: Nigerian Journal of Technological Development, Vol 9, Iss 2 (2012)

The concentration of heavy metals (HM) in the 4km urban drainage stream in Uyo was studied using grab and composite sampling of water from six stations on the stream, and analyzed by a multipurpose atomic absorption spectrophotometer. The data were s

Externí odkaz: https://doaj.org/article/8863a43bcd714df1af438db6623826c9

Spatial and seasonal variations of heavy metal loads in Uyo urban drainage stream under PS and NPS pollution

Autor: O. E. Essien

Publikováno v: Nigerian Journal of Technological Development; Vol 9, No 2 (2012); 82-95
Nigerian Journal of Technological Development, Vol 9, Iss 2, Pp 82-95 (2012)

The concentration of heavy metals (HM) in the 4km urban drainage stream in Uyo was studied using grab and composite sampling of water from six stations on the stream, and analyzed by a multipurpose atomic absorption spectrophotometer. The data were s

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::df06af03660f3a68416fed439747bee2
https://www.ajol.info/index.php/njtd/article/view/117688