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Steady-State Land Cover but Non-Steady-State Major Ion Chemistry in Urban Streams
Environmental Science & Technology, 2018Sources of many major ions in urban streams remain ambiguous, particularly for ions unrelated to deicing salt use, and temporal patterns in concentrations are unstudied. We used 16 years of water chemistry data based on weekly samples from the Baltimore, MD, USA, metropolitan area and the Weighted Regressions on Time, Discharge, and Season approach to ...
Darcy L. Bird +3 more
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Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 2020
The impact of glycosaminoglycan (chondroitin sulphate, CS) on bone morphogenetic protein - 2 (BMP - 2) structure, stability (thermal and chemical), association kinetics and conformation was monitored by multiple spectroscopic techniques (UV-Visible, fluorescence and circular dichroism). The absorbance in peptide region and fluorescence intensity of BMP
Monidipa, Konar, Harekrushna, Sahoo
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The impact of glycosaminoglycan (chondroitin sulphate, CS) on bone morphogenetic protein - 2 (BMP - 2) structure, stability (thermal and chemical), association kinetics and conformation was monitored by multiple spectroscopic techniques (UV-Visible, fluorescence and circular dichroism). The absorbance in peptide region and fluorescence intensity of BMP
Monidipa, Konar, Harekrushna, Sahoo
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Steady State Instability and Oscillation in Simplified Models of Tropospheric Chemistry
The Journal of Physical Chemistry A, 2001Three components have been identified as being common to oscillation in five related but increasingly complex models of tropospheric chemistry. The first of these components is an NOx-empty/refill cycle in which [NOx] grows or declines, depending upon the relative source rates of NOx and HOx, the latter being generally proportional to the rate of ...
Mark R. Tinsley, Richard J. Field
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Extracting Picosecond Time Constants from Steady-State Spectroscopy: A Physical Chemistry Experiment
Journal of Chemical Education, 2013Femtosecond spectroscopy is a key technique in modern physical chemistry research. Thus, femtosecond techniques, as well as molecular processes occurring on femto- to picosecond time scales, should be included in a physical chemistry curriculum. Usually, experiments covering the topic are challenging due to costly equipment and laser safety issues.
Sascha Fröbel +3 more
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Chemistry and Transport of Potassium during the Non‐Steady State of Syenite Leaching
Soil Science Society of America Journal, 2017Core Ideas A flow system for the release and extraction kinetics of ions from a rock fertilizer. The initial release of ions from syenite
Kejing Li, Christi A. Dawydiak
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Multiple steady states in atmospheric chemistry
Journal of Geophysical Research: Atmospheres, 1993The equations describing the distributions and concentrations of trace species are nonlinear and may thus possess more than one solution. Several authors have suggested that the steady‐state equations describing tropospheric and stratospheric chemistry may have multiple solutions, but the existence of such solutions has not been completely demonstrated.
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Calculating critical loads of acid deposition with PROFILE ? A steady-state soil chemistry model
Water, Air, & Soil Pollution, 1992A steady state soil chemistry model was used to calculate the critical load of acidity for forest soils and surface waters at Lake GArdsjon in S.W. Sweden. The critical load of all acid precursors (potential acidity) for the forest soil is 1.64 kmolc ha−1 yr−1, and 1.225 kmolc ha−1 yr−1 for surface waters.
Per Warfvinge, Harald Sverdrup
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Combustion Theory and Modelling, 2003
Splitting techniques have been used extensively for computing reacting flows with detailed chemistry. Nevertheless, there are still some open questions with respect to efficiency and the error introduced by splitting. In this paper, the accuracy and effectiveness of split-operator methods for computing steady-state reacting flows are determined.
Douglas Schwer +3 more
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Splitting techniques have been used extensively for computing reacting flows with detailed chemistry. Nevertheless, there are still some open questions with respect to efficiency and the error introduced by splitting. In this paper, the accuracy and effectiveness of split-operator methods for computing steady-state reacting flows are determined.
Douglas Schwer +3 more
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The Journal of Membrane Biology, 2014
The mathematical model of Rahamathunissa and Rajendran (J Math Chem 44:849-861, 2008) in an amperometric biosensor response is discussed. In this paper, we have applied the shifted second kind Chebyshev wavelets (CW) to obtain the numerical solutions of reaction-diffusion equations containing a nonlinear term related to Michaelis-Menton kinetics of the
M, Mahalakshmi, G, Hariharan
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The mathematical model of Rahamathunissa and Rajendran (J Math Chem 44:849-861, 2008) in an amperometric biosensor response is discussed. In this paper, we have applied the shifted second kind Chebyshev wavelets (CW) to obtain the numerical solutions of reaction-diffusion equations containing a nonlinear term related to Michaelis-Menton kinetics of the
M, Mahalakshmi, G, Hariharan
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The study of soil chemistry through quasi-steady-state models: I. Mathematical definition of model
Geochimica et Cosmochimica Acta, 1989Abstract A mathematical method for studying the composition and speciation of soil solutions is presented. The method is formulated in general algebraic terms, and is adaptable to soil-water systems of virtually any chemical composition. Chemical processes in three different time frames are considered: fast, reversible processes, described in terms ...
Gerhard Furrer +2 more
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