Results 1 to 10 of about 42,354 (265)
Novel insights into the geochemical evaluation of polymer drive composition on surfactant retention in carbonates using the surface complexation modeling [PDF]
Scientific Reports, 2022 Surfactant-polymer (SP) flooding is considered an efficient technique to increase the recovery of oil, especially from carbonates reservoirs, because of their complex nature.
Ilyas Khurshid, Imran Afgan
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Surface Complexation Modeling of Biomolecule Adsorptions onto Titania
Colloids and Interfaces, 2019 The adsorption of nucleic acid components on the surface of nanocrystalline titanium dioxide (anatase, pHpzc = 6.5) in NaCl solutions was investigated using potentiometric titrations and multibatch adsorption experiments over a wide range of pH and ionic
Nataliya N. Vlasova, Olga V. Markitan
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Gels, 2022 Micro- and nanogels are being increasingly used to encapsulate bioactive compounds. Their soft structure allows large loading capacity while their stimuli responsiveness makes them extremely versatile.
Julia Maldonado-Valderrama +5 more
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Efficient and Rapid Removal of Pb(II) and Cu(II) Heavy Metals from Aqueous Solutions by MgO Nanorods
Inorganics, 2022 In this study, the adsorption capability of MgO nanorods for the quick and effective elimination of Cu(II) and Pb(II) heavy metals from wastewater was examined. The MgO nanorods were produced via simple coprecipitation process.
Monira G. Ghoniem +3 more
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On the complexity of immersed normal surfaces [PDF]
Geometry & Topology, 2016 Normal surface theory, a tool to represent surfaces in a triangulated 3-manifold combinatorially, is ubiquitous in computational 3-manifold theory. In this paper, we investigate a relaxed notion of normal surfaces where we remove the quadrilateral conditions. This yields normal surfaces that are no longer embedded. We prove that it is NP-hard to decide
Burton, Benjamin A. +2 more
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Computational complexity of combinatorial surfaces [PDF]
Proceedings of the sixth annual symposium on Computational geometry - SCG '90, 1990 We investigate the computational problems associated with combinatorial surfaces. Specifically, we present an algorithm (based on the Brahana-Dehn-Heegaard approach) for transforming the polygonal schema of a closed triangulated surface into its canonical form in O(n log n) time, where n is the total number of vertices, edges and faces. We also give an
Vegter, Gert, Yap, Chee K.
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Antimony (V) Adsorption at the Hematite–Water Interface: A Macroscopic and In Situ ATR-FTIR Study
Soil Systems, 2021 The environmental mobility of antimony (Sb) is largely unexplored in geochemical environments. Iron oxide minerals are considered major sinks for Sb. Among the different oxidation states of Sb, (+) V is found more commonly in a wide redox range.
Jerzy Mierzwa +5 more
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Frontiers in Nuclear Engineering, 2023 The literature for radionuclide sorption on four common granitic minerals have been surveyed. Mainly, such studies were modelling using Thermodynamic Sorption Models were investigated. Although the studies give a far from concerted results, they agree on
Stellan Holgersson, Pawan Kumar
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, 2023 Abstract A surface in the Teichmüller space, where the systole function attains its maximum, is called a maximal surface. For genus two there exists a unique maximal surface which is called the Bolza surface. In this article, we study the complexity of the set of systolic geodesics on the Bolza surface.
Saha, Bhola Nath, Sanki, Bidyut
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Sorption of Pd on illite, MX-80 bentonite and shale in Na–Ca–Cl solutions
Nuclear Engineering and Technology, 2021 This paper examines sorption of Pd(II) onto illite, MX-80 bentonite, and Queenston shale in Na–Ca–Cl solutions of varying ionic strength (IS) from 0.01 to 6.0 mol/L (M) and pHc ranging from 3 to 9 under atmospheric conditions.
Jared Goguen +4 more
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