A5033572652- Groundwater flow and contamination studies
- Wastewater Treatment and Nitrogen Removal
- Hydrology and Watershed Management Studies
- Iron Metabolism and Disorders
- Phytase and its Applications
- Urban Stormwater Management Solutions
- CO2 Sequestration and Geologic Interactions
- Water Systems and Optimization
- Numerical methods for differential equations
- Microbial bioremediation and biosurfactants
- Groundwater and Isotope Geochemistry
- Dam Engineering and Safety
- Ammonia Synthesis and Nitrogen Reduction
- Modeling and Simulation Systems
- Wireless Sensor Networks for Data Analysis
- Folate and B Vitamins Research
- Protein Hydrolysis and Bioactive Peptides
- Flood Risk Assessment and Management
- Water Quality Monitoring and Analysis
- Soil Moisture and Remote Sensing
- Advanced Numerical Methods in Computational Mathematics
- Microbial Fuel Cells and Bioremediation
- Atmospheric and Environmental Gas Dynamics
- Air Quality Monitoring and Forecasting
- Electromagnetic Simulation and Numerical Methods
Catholic University of America
2015-2019
University of America
2015-2017
Sharif University of Technology
2015
Core Ideas Phytate is degraded through distinct pathways for a particular enzyme. Oxygen isotope ratios of phosphate moieties in phytate are isotopically identical. These findings bring new insights into tracking sources the environment. (IP 6 ) often most common organic P compound particularly agricultural soils. Understanding fate inositol x environment terms isomeric composition and concentration assessing relative resistance to (or preference for) degradation essential estimate potential...
Green infrastructure (GI) is a contemporary approach to the management of stormwater and limits its intrusion into wastewater collection systems. GI practices, such as bioretention systems, affect local water cycle by encouraging detention, infiltration, evapotranspiration intercepted runoff. They may also quality either contributing nutrients or removing pollutants through filtration biogeochemical transformation. Therefore, for complete understanding effects, thorough water-cycle...
A parameter estimation framework was used to evaluate the ability of observed data from a full-scale nitrification–denitrification bioreactor reduce uncertainty associated with bio-kinetic and stoichiometric parameters an activated sludge model (ASM). Samples collected over period 150 days effluent as well reactor tanks were used. hybrid genetic algorithm Bayesian inference perform deterministic estimations, respectively. The main goal assess obtain reliable estimates for modified version...
Abstract The evolution of the joint distribution groundwater age, velocity, and arrival times based on a Markov model for velocities fluid particles in heterogeneous porous media has been quantified. An explicit equation time, particle velocity is derived, which equivalent to continuous time random walk time. approach fully parameterized by correlation flow velocities. transition probability subsequent along streamlines implemented Copula, an efficient method generate correlated series with...
A backward differentiation formula (BDF) has been shown to be an effective way solve a system of ordinary differential equations (ODEs) that have some degree stiffness. However, sometimes, due high-frequency variations in the external time series boundary conditions, small time-step is required ODE throughout entire simulation period, which can lead high computational cost, slower response, and need for more memory resources. One possible strategy overcome this problem dynamically adjust...
In climate change conditions, warmer temperature accompanied by greater precipitation could lead to the formation of larger snowpack and earlier spring melting snowpack, which in turn increase magnitude runoff a cold region basin. Conversely, lower temperatures lesser decrease within Both scenarios, along with other alter basin confounding manner challenge validity parameters used designs embankment dams. Spillways, stilling basins, outlet structures will be impacted most as compared...
In this study, the endogenous respiration rate and observed biomass yield of denitrifying methylotrophic were estimated through measuring changes in denitrification rates (DNR) as a result maintaining under methanol deprived conditions. For purpose, activated sludge from full-scale wastewater treatment plant was kept 10-L batch reactors for 8 days fully aerobic anoxic conditions at 20 °C without addition. To investigate temperature effects, another sample placed starvation over period 10 25...
Simulation of activated sludge model (ASM) including detailed biokinetic reaction network often requires the solution a large system ordinary differential equations (ODEs) at each time frame, which long computing times. In this study, an adaptive step backward differentiation formula (BDF) is proposed to solve ASM's ODEs that mainly contains high degree stiffness. A multi-tile CUDA-based parallel Gauss-Jordan (GJ) algorithm for matrix inversion applied as part BDF accelerate overall...
In this paper, a modeling tool for risk assessment analysis of the movement hydrocarbon contaminants in vadose zone and mass flux contamination release into groundwater table was developed. Also, advection-diffusion-reaction equations combination with three-phase equilibrium state between trapped air, soil humidity, solid particles unsaturated matrix were numerically solved to obtain one dimensional concentration change respect depth total loading rate hydrocarbons table. The developed model...