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Author (up) Külls, C.H.; Eichinger, F.; Fader, H.J.; Leistert, H.; Lorenz, G.; Szakacs, E. openurl 
  Title New Environmental Analytical Techniques to Monitor Carbon Sequestration Type Conference Article
  Year 2011 Publication 1st EAGE Sustainable Earth Sciences (SES) Conference and Exhibition Abbreviated Journal  
  Volume Issue Pages 268  
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  Area Expedition Conference European Association of Geoscientists & Engineers  
  Notes Approved no  
  Call Number THL @ christoph.kuells @ Kuells2011new Serial 47  
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Author (up) Külls, C.J.; Ritter, M. openurl 
  Title Deuterium excess anomaly of precipitation in Svalbard Type Conference Article
  Year 2010 Publication American Geophysical Union Abbreviated Journal  
  Volume 2010 Issue Pages 51  
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  Notes Approved no  
  Call Number THL @ christoph.kuells @ Kuells2010deuterium Serial 50  
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Author (up) Külls, C.J.; Zabori, J. openurl 
  Title On the representation of hydrological processes in current SVAT schemes-comparison and perspective Type Conference Article
  Year 2009 Publication American Geophysical Union Fall Meeting Abbreviated Journal  
  Volume 2009 Issue Pages 14  
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  Call Number THL @ christoph.kuells @ Kuells2009representation Serial 52  
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Author (up) Kumar, V.; Setia, R.; Pandita, S.; Singh, S.; Mitran, T. url  openurl
  Title Assessment of U and As in groundwater of India: A meta-analysis Type Journal Article
  Year 2022 Publication Chemosphere Abbreviated Journal  
  Volume 303 Issue Pages 135199  
  Keywords Arsenic, Geology, Groundwater, Health risk, Soil texture, Uranium  
  Abstract More than 2.5 billion people depend upon groundwater worldwide for drinking, and giving quality water has become one of the great apprehensions of human culture. The contamination of Uranium (U) and Arsenic (As) in the groundwater of India is gaining global attention. The current review provides state-of-the-art groundwater contamination with U and As in different zones of India based on geology and soil texture. The average concentration of U in different zones of India was in the order: West Zone (41.07 μg/L) \textgreater North Zone (37.7 μg/L) \textgreater South Zone (13.5 μg/L)\textgreater Central Zone (7.4 μg/L) \textgreater East Zone (5.7 μg/L) \textgreaterSoutheast Zone (2.4 μg/L). The average concentration of As in groundwater of India is in the order: South Zone (369.7 μg/L)\textgreaterCentral Zone (260.4 μg/L)\textgreaterNorth Zone (67.7 μg/L)\textgreaterEast Zone (60.3 μg/L)\textgreaterNorth-east zone (9.78 μg/L)\textgreaterWest zone (4.14 μg/L). The highest concentration of U and As were found in quaternary sediments, but U in clay skeletal and As in loamy skeletal. Results of health risk assessment showed that the average health quotient of U in groundwater for children and adults was less than unity. In contrast, it was greater than unity for As posing a harmful impact on human health. This review provides the baseline data regarding the U and As contamination status in groundwater of India, and appropriate, effective control measures need to be taken to control this problem.  
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  ISSN 0045-6535 ISBN Medium  
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  Call Number THL @ christoph.kuells @ kumar_assessment_2022 Serial 161  
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Author (up) Kurmanseiit, M.B.; Tungatarova, M.S.; Royer, J.-J.; Aizhulov, D.Y.; Shayakhmetov, N.M.; Kaltayev, A. url  openurl
  Title Streamline-based reactive transport modeling of uranium mining during in-situ leaching: Advantages and drawbacks Type Journal Article
  Year 2023 Publication Hydrometallurgy Abbreviated Journal  
  Volume 220 Issue Pages 106107  
  Keywords 3D modeling, In-situ leaching, Reactive transport model, Streamlines, Uranium recovery  
  Abstract Reactive transport modeling is known to be computationally intensive when applied to 3D problems. Transforming sequential computing on the computer processor units (CPU) into parallelized computation on the high-performance parallel graphic processor units (GPU) is a classical approach to increasing computational performance. Another complementary approach is to decompose a complex 3D modeling problem into a set of simpler 1D problems using streamline approaches which can be easily parallelized, therefore reducing computation time. This paper investigates solutions to the equations governing dissolution and transport using streamlines coupled with a parallelization approach. In addition, an analytical solution to the dissolution and transfer equations of uranium describing the In-Situ Leaching (ISL) mining recovery is found using an approximation series to the 2nd order. The analytical solution is compared to the 1D numerical resolution along the streamlines and to the 3D simulation results superimposed on the streamline. Both approaches give similar results with a relative error of \textless2 % (2%). The proposed methodology is then applied to a case study in which the classical 3D resolution is compared to the newly suggested streamline solution, demonstrating that the streamline approach increases computational performances by a factor ranging from hundred to thousand depending on the complexity of the grid-block model.  
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  ISSN 0304-386x ISBN Medium  
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  Notes Approved no  
  Call Number THL @ christoph.kuells @ kurmanseiit_streamline-based_2023 Serial 190  
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