9 results match your criteria: "Vietnam Institute of Geosciences and Mineral Resources[Affiliation]"

The complex iron oxide copper and gold (IOCG) Sin Quyen deposit in northern Vietnam is known as hydrothermal veins and multi-stages of mineralization. Thus, it is complicated to make a probabilistic 3D geometric model using traditional methods and to predict the hidden mineral potential. In this study, computer modeling with nearly 8000 archival data was recorded from 146 boreholes within the study area, and the chemical analysis was done on 40 samples.

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  • Coastal aquifers' varying rock and sediment types significantly affect saltwater intrusion, complicating predictions of its pathways and duration.
  • Electrical resistivity tomography (ERT) and induced polarization (IP) methods are being used to differentiate between saltwater and clay-rich sediments, but relying too heavily on simplified conductivity models can lead to inaccuracies in understanding salinity levels in these aquifers.
  • This study utilizes data from boreholes to improve petrophysical relationships, finding that different sediment types show varying formation factors and surface conductivity, which helps distinguish saltwater presence in clay-bearing and sandy sediments.
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  • - The study analyzed mercury (Hg) levels in sediment porewaters and solid phases using both conventional and passive sampling methods in the polluted Scheldt Estuary and Belgian Coastal Zone (BCZ).
  • - Findings revealed that labile Hg concentrations measured by Diffusive Gradients in Thin-films (DGT) were generally lower than those in porewater, with various vertical distribution patterns observed, while sediment solid phases still contained high Hg levels.
  • - The research highlighted the influence of organic matter in controlling Hg movement between solid phases and porewater, and suggested that the DGT method effectively measures bioavailable Hg and can model its release from sediments.
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Trace element contamination in rice and its potential health risks to consumers in North-Central Vietnam.

Environ Geochem Health

June 2023

Faculty of Biotechnology, Chemistry and Environmental Engineering, Phenikaa University, Hanoi, 12116, Vietnam.

Lead (Pb), cadmium (Cd), arsenic (As), chromium (Cr), and nickel (Ni) are poisonous, widely distributed, persistent, and transferable to crops, posing potential health risks. This study aims to assess the potential health risks of those elements in rice collected from North-Central Vietnam: Thanh Hoa, Nghe An, and Ha Tinh provinces. Element analysis was performed on rice harvested in November 2020 by ICP-MS.

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Toxic metal pollution influences the lives of diverse aquatic organisms and humans who consume contaminated aquatic products. However, its potential impacts on aquatic organism health and, thus, ecological health, have been neglected in many regions. This research was carried out to contribute to filling that knowledge gap.

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(1) Background: Metal pollution in the Nhue-Day River basin has impacted approximately 12 million people. However, none of the previous studies considered the entire basin's environmental and health risks. Thus, this research aims to fill knowledge gaps and reduce risks.

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Ostracods had colonized estuaries by the late Silurian.

Biol Lett

December 2021

School of Geography, Geology and the Environment, University of Leicester, Leicester LE1 7RH, UK.

The fossil record of terrestrialization documents notable shifts in the environmental and physiological tolerances of many animal and plant groups. However, for certain significant components of modern freshwater and terrestrial environments, the transition out of marine settings remains largely unconstrained. Ostracod crustaceans occupy an exceptional range of modern aquatic environments and are invaluable palaeoenvironmental indicators in the fossil record.

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A new hybrid equilibrium optimized SysFor based geospatial data mining for tropical storm-induced flash flood susceptible mapping.

J Environ Manage

February 2021

Geographic Information Science Research Group, Ton Duc Thang University, Ho Chi Minh City, Viet Nam; Faculty of Environment and Labour Safety, Ton Duc Thang University, Ho Chi Minh City, Viet Nam; GIS Group, Department of Business and IT, University of South-Eastern Norway, N-3800 Bø i Telemark, Norway. Electronic address:

Flash flood is one of the most dangerous hydrologic and natural phenomena and is considered as the top ranking of such events among various natural disasters due to their fast onset characteristics and the proportion of individual fatalities. Mapping the probability of flash flood events remains challenges because of its complexity and rapid onset of precipitation. Thus, this study aims to propose a state-of-the-art data mining approach based on a hybrid equilibrium optimized SysFor, namely, the HE-SysFor model, for spatial prediction of flash floods.

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A total of 169 specimens of the orange-spotted grouper Epinephelus coioides (Hamilton) were collected from fishermen and marine fish farms in the Gulf of Tonkin, Vietnam. Five different species of Prosorhynchus Odhner, 1905 were recorded, including P. tonkinensis n.

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