the quality of hg contaminated sediments in artisanal gold mining areas of tanzania have to date only been assessed through bulk chemical analysis. however, measurement of contaminant levels alone has a limited ability to predict adverse effects on living resources. in this study we investigated the possible effects of hg contaminated sediments from the river mabubi which drains the artisanal g...

The unique minerals of the Au-Pd-Hg system in gold grains from heavy concentrates Itchayvayam placers and watercourses draining ore samples Barany outcrop at mafic–ultramafic complex (Kamchatka, Russia) were investigated. Gold contain substitution structures formed by Pd,Hg-rich low-fineness (Au0.59–0.52Pd0.24–0.25Hg0.17–0.23, 580‰–660‰) Pd,Hg-poor high-fineness (Au0.94–0.90Pd0.02–0.04Hg0.03, 9...

Machine learning (ML) algorithms have emerged as competent tools for identifying areas that are susceptible to flooding. The primary variables considered in most of these works include terrain models, lithology, river networks and land use. While several recent studies average annual rainfall and/or temperature, other meteorological information such snow accumulation short-term intense rain eve...

In the field of thermoelectric energy conversion, oxide materials show promising potential due to their good stability in oxidizing environments. Hence, the influence of oxygen partial pressure during synthesis on the thermoelectric properties of Cu-Delafossites at high temperatures was investigated in this study. For these purposes, CuFeO₂ powders were synthetized using a conventional mixed-ox...

The interaction of mercury vacancies with dopant indium atoms in Hg0,7&d0.t,Te was studied using the perturbed ‘y”/ angular correlation (PAC) technique+ Two dominant PAC signals, characterized by quadrupole interaction strengths YQ~ = 83 MHz and yoL = 91 MHz and asymmetry parameters v1 = r/2 = 0.08, were observed and attributed to one or more In-Vu, complexes. The complexes appeared after annea...

BACKGROUND Toenail-Hg levels are being used as a marker of methylmercury (MeHg) exposure in efforts to associate exposure with effects such as cardiovascular disease. There is a need to correlate this marker with more established biomarkers that presently underlie existing dose-response relationships in order to compare these relationships across studies. METHODS As part of the Arsenic Mercur...