山本政儀,松 井正夫:北 陸大学薬学部放射薬 品学教室 金沢市金川町 ホ3番 地 〒g20-11 五十嵐修一,吉 岡満夫, 早川博信,北 川貞治:福 井県衛生研究所放射能課 福井市原 目町39-4 〒910 Radionuclides/Glycerol/Sediment/Normalization The concentrations of 239Pu and 137Cs due to fall-out, and 60Co originating from the nuclear power reactor in the sediments sampled at Urazoko Bay, Fukui Pref., Japan, were determined and their correlation with the particle size or the amount of g...

A human health risk assessment has been performed in relation to recreational activities on two artificial freshwater lakes along the river Meuse in The Netherlands. Although the discharges of contaminants into the river Meuse have been reduced in the last decades, which is reflected in decreasing concentrations of pollutants in surface water and suspended matter, the levels in sediments are mo...

The effects of three suspected endocrine disrupting chemicals, the xeno-estrogens bisphenol A (BPA), 4-tert-octylphenol (OP) and 4-n-nonylphenol (NP), were investigated in a whole-sediment biotest with the freshwater mudsnail Potamopyrgus antipodarum (Gastropoda, Prosobranchia). Artificial sediments were spiked with five nominal concentrations (six for NP), ranging from 1-300 microg/kg dry weig...

Bacteria and phytoplankton are key players in aquatic ecosystem functioning. Their interactions mediate carbon transfer through the trophic web. Chemical contamination can alter function diversity of bacterioplankton, with important consequences for The aim present study was to assess impact chemical on between both biological compartments. Two contrasting marine coastal ecosystems, offshore wa...

The aim of this study was to estimate suspended sediment by the ANN model, DT with CART algorithm and different types of SRC, in ten stations from the Lorestan Province of Iran. The results showed that the accuracy of ANN with Levenberg-Marquardt back propagation algorithm is more than the two other models, especially in high discharges. Comparison of different intervals in models showed that r...

Anomaly separation using stream sediment geochemical data has an essential role in regional exploration. Many different techniques have been proposed to distinguish anomalous from study area. In this research, a continuous restricted Boltzmann machine (CRBM), which is a generative stochastic artificial neural network, was used to recognize the mineral potential area in Korit 1:100000 sheet, loc...

Beach width is an important factor for tourists’ comfort, and the backshore a swash zone where sediment moves quickly. Artificial sandy beaches focus on beach stability evolution. This paper based artificial project in Haikou Bay, where, view of existing conditions, new type profile that can protect berm without being eroded by large wave action. Numerical simulation XBeach model were conducted...

Sediments recovered from Ocean Drilling Program (ODP) holes undergo elastic rebound and physical expansion when recovered from great depths below the seabed (about 75 m). This expansion contributes to the artificial “growth” of the composite depth section (Hagelberg et al., 1992). Sediment elastic properties, derived from one-dimensional consolidation tests, are used to correct the expanded sed...

Beirut, Sidon and Tyre were major centres of maritime trade from the Bronze Age onwards. This economic prosperity generated increased pressures on the local environment, through urbanization and harbour development. Until now, however, the impact of expanding seaport infrastructure has largely been neglected and there is a paucity of data concerning the environmental stresses caused by these ne...

Widenfalk, A. 2005. Interactions between pesticides and microorganisms in freshwater sediments – Toxic effects and implications for bioavailability. Doctoral dissertation. ISSN 1652-6880, ISBN 91-576-7022-6. In aquatic ecosystems sediment microbial communities provide many important functions, such as organic matter decomposition and by constituting a major food source for organisms at higher t...