Results 231 to 240 of about 21,070 (289)
Deriving reaction?diffusion models in ecology from interacting particle systems
Journal of Mathematical Biology, 2004 We use a scaling procedure based on averaging Poisson distributed random variables to derive population level models from local models of interactions between individuals. The procedure is suggested by using the idea of hydrodynamic limits to derive reaction-diffusion models for population interactions from interacting particle systems.
Robert Stephen Cantrell, Chris Cosner
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Exploitation of Particle Migration Mechanism to Promote Economy and Ecology in Concrete Technology
Key Engineering Materials, 2006 The computer simulation study of Portland cement blending confirmed the major mechanism to be size segregation in the Interfacial Transition Zones around the aggregate particles. Fine particles tend to move through the skeleton of larger particles towards the surface of the aggregate grains, improving local density.
Piet Stroeven +2 more
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The importance of fine particle technology in the world's ecology
Powder Technology, 1973 Abstract Fine particle technology has much to offer in controlling the world's ecology. Better and cheap instrumentation for sampling of particulates needs to be developed. The collection efficiencies of existing particle removal systems must be improved and novel methods to remove more than one pollutant in a system must be invented.
M. Balasubramanian
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Environs: Relativistic Elementary Particles for Ecology
The American Naturalist, 1982 Bernard C. Patten
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Journal of Theoretical Biology, 2014 The particle capture efficiency, η, of systems that remove suspended particles from ambient flow (e.g. suspension feeding, abiotic pollination) has been studied using static collectors in steady flows. Particle deposition on collectors moving due to fluid flow remains largely unknown, despite its ecological relevance.
Julian Krick, Josef Daniel Ackerman
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Empirical study of particle swarm optimization inspired by Lotka–Volterra model in Ecology
Soft Computing, 2018 Particle swarm optimization (PSO) has been proved to be an effective technique in solving complex global optimization problems. Many modified versions of the original PSO algorithm emerged during the last 15 years. Many of those existing methods employ all particles in a single population which adopts the similar monotonic strategy.
Xianxiang Wu +4 more
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Chemosphere, 2022
Automobile exhaust has become the main source of atmospheric particulate matter with the increase in the number of automobiles. Automobile exhaust particles (AEPs) discharged into the atmosphere can enter the aquatic environment through atmospheric deposition, rain runoff, leaching, drainage water and urban sewage and further affect aquatic organisms ...
Liang, Cui +5 more
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Automobile exhaust has become the main source of atmospheric particulate matter with the increase in the number of automobiles. Automobile exhaust particles (AEPs) discharged into the atmosphere can enter the aquatic environment through atmospheric deposition, rain runoff, leaching, drainage water and urban sewage and further affect aquatic organisms ...
Liang, Cui +5 more
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Science, 2016 Microplastic's triple threat The billions of tons of plastics that we release into the environment for the most part do not biodegrade. But they do degrade, breaking into ever smaller particles that end up in the oceans. Lönnstedt et al.
Oona M. Lönnstedt, Peter Eklöv
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Implications of network particle tracking (NPT) for ecological model interpretation
Ecological Modelling, 2009Abstract Network particle tracking (NPT), building on the foundation of network environ analysis (NEA), is a new development in the definition of coherence relations within and between connected systems. This paper evaluates three ecosystem models in a comparison of throughflow- and storage-based NEA and NPT. Compartments in models with high indirect
Bernard C. Patten +3 more
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Purification Effect on Particle Size of Matrix in Ecological Filter Bed
Applied Mechanics and Materials, 2012In order to study the purification effect on the particle size of matrix in ecological filter bed, four ecological filter bed units with different particle sizes (0~2mm, 2~15mm, 15~30mm, 30~50mm) are designed to purify the polluted river water. Results show that the particle size of matrix has considerable influence on the polluted river water quality ...
Ping Yang, Ming Tao Zhou, Huan Hu
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