A5010986528- Groundwater and Isotope Geochemistry
- Hydrology and Watershed Management Studies
- Water Quality and Pollution Assessment
- Soil and Water Nutrient Dynamics
- Aquatic Ecosystems and Phytoplankton Dynamics
- Geology and Paleoclimatology Research
- Marine and coastal ecosystems
- Hydrology and Sediment Transport Processes
- Climate variability and models
- Groundwater and Watershed Analysis
- Mercury impact and mitigation studies
- Coastal wetland ecosystem dynamics
- Heavy metals in environment
- Arsenic contamination and mitigation
- Fish Ecology and Management Studies
- Coastal and Marine Management
- Geochemistry and Elemental Analysis
- Water-Energy-Food Nexus Studies
- Soil erosion and sediment transport
- Geological formations and processes
- Ocean Acidification Effects and Responses
- Wastewater Treatment and Nitrogen Removal
- Transboundary Water Resource Management
- Plant Water Relations and Carbon Dynamics
- Karst Systems and Hydrogeology
Vietnam Atomic Energy Instiute
2018-2025
University of South Florida
2024
RMIT Vietnam
2023
Vietnam Academy of Science and Technology
2006-2018
Hanoi National University of Education
2017
Institute of Chemistry
2014
Yonsei University
2008
Swinburne University of Technology
2005
Laboratoire de Glaciologie et Géophysique de l’Environnement
2005
Abstract Remediation of nitrate pollution Earth’s rivers and aquifers is hampered by cumulative biogeochemical processes nitrogen sources. Isotopes ( δ 15 N, 18 O) help unravel spatiotemporal nitrogen(N)-cycling aquatic (NO 3 − ). We synthesized isotope data n = ~5200) for global shallow common patterns processes. Rivers had lower median NO (0.3 ± 0.2 mg L −1 , 2902) compared to (5.5 5.1 2291) slightly N values (+7.1 3.8‰, 2902 vs +7.7 4.5‰, 2291), but were indistinguishable in O (+2.3 6.2‰,...
Abstract The winter and summer monsoons in Southeast Asia are important but highly variable sources of rainfall. Current understanding the monsoon is limited by conflicting proxy observations, resulting from decoupling regional atmospheric circulation patterns local rainfall dynamics. These signals difficult to decipher paleoclimate reconstructions. Here, we present a speleothem record covering Holocene find that changed synchronously, forced changes Pacific Indian Oceans. In contrast, shows...
Due to the depositional environment, river deltas are said act as filters and sinks for pollutants. However, many also densely populated rapidly urbanizing, creating new increased sources of These pose risk tipping these environments from pollution sources, world's oceans. We provide detailed seasonal annual assessments metal contaminants in riverine suspended particulate matter (SPM) across Red River Delta (RRD), Vietnam. The global contributions elements RRD all <0.2% with elemental fluxes...
Over the last 20 years, we have dramatically improved hydrometeorological data including isotopes, but are making most of this data? Stable isotopes oxygen and hydrogen in water molecule (stable - SWI) well known tracers global hydrological cycle producing critical climate science. Despite this, stable not explicitly included influential reports (e.g. Intergovernmental Panel on Climate Change, IPCC) except for paleoclimate reconstructions. Continuous developments modelling approaches now...
Heavy metal contamination in sediment has caused severe threats to the aquatic ecosystem and public health worldwide. Hence, determining distinct chemical forms of a given heavy sediment...
Diagenetic modeling presents an interesting and robust way to understand sediment–water column processes. Here we present the application of such a model Day River in Northern Vietnam, system that is subject high levels domestic wastewater inputs from Hanoi metropolitan area. Experimental data three areas different water sediment quality, combined with some additional river, are used set up calibrate diagenetic model. The was determine role sediments as sink for carbon nutrients shows dry...
Abstract Tropical rivers are dynamic CO 2 sources. Regional patterns in the partial pressure of ( p ) and relationships with other a/biotic factors densely populated rapidly developing river delta regions Southeast Asia still poorly constrained. Over one year, at 21 sites across system Red River Delta (RRD), Vietnam, we calculated levels from temperature, pH, total alkalinity inter-linkages between phytoplankton, water chemistry seasonality were then assessed. The smaller, more urbanized,...
We report on the fabrication of desired magneto-photonic devices by a low one-photon absorption (LOPA) direct laser writing (DLW) technique photocurable nanocomposite consisting magnetite ( Fe 3 O 4 ) nanoparticles and commercial SU-8 photoresist. The magnetic was synthesized mixing with different kinds photoresists. demonstrated that degree dispersion in depended concentration nanoparticles, viscosity resist, time. By tuning these parameters, most homogeneous obtained about 2 wt % 2005...
This study demonstrates robot technology for harvesting edible bird’s nests within swiftlet houses. A comprehensive manipulator’s movement analysis of operation with a separating tool is provided precisely collecting nests. robotic manipulator mounted on mobile platform vision system also analyzed and evaluated in this study. The actual or the performed visual servo feedback. performs gross motions tools removing under computer control velocity position principle between objective nest...
Organic fertilizer application is often touted as an economical and effective method to increase soil fertility. However, this amendment may dissolved organic carbon (DOC) runoff into downstream aquatic ecosystems consequently alter microbial community. We focused on understanding the effects of DOC from soils amended with compost, vermicompost, or biochar community a tropical reservoir. Runoff collected series rainfall simulations different fertilizers was incubated for 16 days in 200 L...
The Seneque/Riverstrahler (SR) model, which was developed to establish links between the biogeochemical functioning of river systems and constraints set by their (i) meteorology, (ii) drainage network morphology (iii) human activities, applied Day-Nhue River basin (DNRB).The DNRB is most polluted area in northern part Vietnam where domestic, industrial, agricultural aquacultural activities have generated multiple sources pollutants DNRB.Questionnaire surveys were conducted industrial zones...
Abstract This paper presents the use of stable isotopes water for hydrological characterization and flow component partitioning in Red River Delta (RRD), downstream section River. Water samples were collected monthly during 2015 from mainstream river its right bank tributaries flowing through RRD. In general, δ 18 O 2 H signatures depleted summer–autumn (May–October) elevated winter–spring (November–April), displaying seasonal variation response to regional monsoon air mass contest. The...