Results 191 to 200 of about 2,805 (245)

Geochemical Rate Models

2013
This well-organised, comprehensive reference and textbook describes rate models developed from fundamental kinetic theory and presents models using consistent terminology and notation. Major topics include rate equations, reactor theory, transition state theory, surface reactivity, advective and diffusive transport, aggregation kinetics, nucleation ...
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Geochemical Modeling of Reaction Paths and Geochemical Reaction Networks

Reviews in Mineralogy and Geochemistry, 2009
From the discussions in previous chapters, we can see that in order to understand the kinetics of dissolution and precipitation reactions, we really need to understand geochemical reaction networks. The previous chapters have depicted a complex picture of the details of chemical reactions and kinetics.
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A geochemical model of the Venus troposphere

Icarus, 1978
Abstract A geochemical model of the Venus troposphere (0–65 km) based on a theoretical generalization of the available instrumental data and equilibrium calculations in the OHCNS system is proposed. The model is based on the concept of geochemical zoning of the troposphere.
C.P. Florensky, V.P. Volkov, O.V. Nikolaeva   +2 more
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Modeling the Geochemical Carbon Cycle

Scientific American, 1989
The authors have modeled the slow, long-term cycle in which geochemical processes transfer carbon among land, sea, and atmosphere. The model suggests that the earth may have been warmed in the past when buildups of atmospheric carbon dioxide enhanced the greenhouse effect.
Robert A. Berner, Antonio C. Lasaga
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Environmental Applications of Geochemical Modeling

2002
Geochemical modeling is a powerful tool for characterizing environmental site contaminations and predicting environmental impacts. This book discusses the application of geochemical models to environmental practice and studies, through the use of numerous case studies of real-world environmental problems, such as acid mine drainage, pit lake chemistry,
Chen Zhu, Greg Anderson
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Geochemical modeling of glass alteration

2023
Modeling the alteration of radioactive waste confinement glasses presents three main challenges: i) Chemical complexity: The numerous major chemical elements in the glass, fluid, and environmental minerals interact with each other through fluid and gas.
Frugier, Pierre, Delcroix, M., Coste, M., Minet, Y., Godon, Nicole   +4 more
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On the dynamic model of the geochemical cycle

Icarus, 1967
Abstract Movement of chemical species within the crust of the earth is described by the concept of the geochemical cycle. The dynamical behavior of the cycle is studied in which the transfer rates of species among continents, ocean, and ocean bottom play an important role.
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Geochemical and Biogeochemical Reaction Modeling

2007
This book provides a comprehensive overview of reaction processes in the Earth's crust and on its surface, both in the laboratory and in the field. A clear exposition of the underlying equations and calculation techniques is balanced by a large number of fully worked examples.
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Basic Concepts in Geochemical Modelling

1986
During this Nato-Advanced Course devoted to the Role of Air-Sea Exchange in Geochemical Cycling, basic concepts like steady-state, residence time and response time, stability or instability of the system, were often evoked by several speakers. It was therefore important that the participants became rapidly acquainted with these concepts.
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The question of uniqueness in geochemical modeling

Geochimica et Cosmochimica Acta, 1992
Abstract Contrary to prevailing opinion, geochemical models that predict the distribution of species in aqueous fluids do not always give unique results. To constrain calculations of this type, geochemical modelers commonly set the activities of certain dissolved species or fugacities of certain gases and many times assume equilibrium between the ...
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