A new inverse method is developed to simultaneously estimate heterogeneous hydraulic conductivities, source/sink rates, and unknown boundary conditions for steadystate flow in an unconfined aquifer. Unlike objective function-based techniques, the new method does not optimize any data-model misfits. Instead, its formulation is developed by honoring physical flow principles as well as observation...

1 Department of Neurology, Isfahan Neurosciences Research Center, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran 2 Department of Neurology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran 3 Department of Medical Sciences, School of Medicine, Islamic Azad University, Najafabad Branch, Isfahan, Iran 4 Medical Students’ Research Center, School o...

1Department of Gastroenterology and Hepatology, Tehran University of Medical Sciences, Tehran, IR Iran 2Baqiyatallah Research Center for Gastroenterology and Liver Disease, Baqiyatallah University of Medical Sciences, Tehran, IR Iran 3Middle East Liver Disease Center (MELD), Tehran, IR Iran 4Research Center for Gastroenterology and Liver Disease, Tabriz University of Medical Sciences, Tabriz, I...

Proposed withdrawal of groundwater from the surficial aquifer system confined zone, or the upper and lower Brunswick aquifers in eastern Camden County, Georgia, could result in drawdown extending beneath the Cumberland Sound and potentially could affect groundwater levels and natural resources at Cumberland Island National Seashore. Using a nonequilibrium formula, estimated drawdown after 5 yea...

Modeling and calibration of natural aquifers with multiple scales of heterogeneity is a challenging task due to limited subsurface access. While computer modeling plays an essential role in aquifer studies, large uncertainty exists in developing a conceptual model of an aquifer and in calibrating the model for decision making. Due to uncertainties such as a lack of understanding of subsurface p...

A novel methodology for the interpretation of pumping tests in leaky aquifer systems, referred to as the double inflection point (DIP) method, is presented. The method is based on the analysis of the first and second derivatives of the drawdown with respect to log time for the estimation of the flow parameters. Like commonly used analysis procedures, such as the type-curve approach developed by...

The Abbotsford-Sumas Aquifer is a shallow, predominantly unconfined aquifer that spans regions in southwestern British Columbia, Canada and northwestern Washington, USA. The aquifer is prone to nitrate contamination because of extensive regional agricultural practices. A 22-month ground water nitrate assessment was performed in a 10-km2 study area adjacent to the international boundary in north...

the appearance of sowbugs (hemilepistus shirazi schuttz) in the sedimentation basins of the artificial recharge of groundwater (arg) systems in the gareh bygone plain (gbp) in southern iran is considered an ecological breakthrough in desertification control. this study was performed at the kowsar floodwater spreading and aquifer management research, training and extension station in gbp, 200 km...

One of the most important issues in urban studies relating to climate and environmental sustainability is analysis thermal conditions public spaces, especially streets, since this issue seems affect comfort citizens using such spaces. Thus, main aim present study investigate effect streetscape parameters on streets a hot summer semi-arid climate. For purpose, Karimkhan-e-Zand Street Shiraz, Ira...

Three indigenous groundwater bacterial strains and Pseudomonas putida harboring plasmids TOL (pWWO) and RK2 were introduced into experimentally contaminated groundwater aquifer microcosms. Maintenance of the introduced genotypes was measured over time by colony hybridization with gene probes of various specificity. On the basis of the results of colony hybridization quantitation of the introduc...