Results 261 to 270 of about 26,782 (299)
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2008
Depending on the origin, riverine aggregates (suspended material) harbor a complex mixture of inorganic and organic components. The living organic components are characterized by nucleic acid-containing constituents such as algae, protozoa, fungi, bacteria and virus-like particles.
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Depending on the origin, riverine aggregates (suspended material) harbor a complex mixture of inorganic and organic components. The living organic components are characterized by nucleic acid-containing constituents such as algae, protozoa, fungi, bacteria and virus-like particles.
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Particle Size Spectra in Ecology
1984The use of size distributions as descriptors of ecosystems goes back at least to Elton (1927), although quantitative applications have appeared only during the past decade. Elton noted that there was a characteristic difference between terrestrial and aquatic ecosystems; on land the organisms in the lower trophic levels tend to be larger than the ...
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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 ...
Ming Tao Zhou, Ping Yang, Huan Hu
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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
E.W. Tollner +3 more
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A novel ecological particle swarm optimization algorithm and its population dynamics analysis
Applied Mathematics and Computation, 2008zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Qi Kang 0001, Lei Wang 0006, Qidi Wu
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Empirical study of particle swarm optimization inspired by Lotka–Volterra model in Ecology
Soft Computing, 2018Particle 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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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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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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Termite soil preferences and particle selections: strategies related to ecological requirements
Insectes Sociaux, 2002At the Lamto Savanna Ecological Station (Cote d'Ivoire), Odontotermes nr. pauperans (Termitidae, Macrotermitinae) was observed to build mounds enriched with fine particles. Using laboratory experiments we studied the selection of building materials by worker termites offered soil from two contrasting horizons: superficial soil (15-20 cm) and a deeper ...
P. Jouquet, M. Lepage, B. Velde
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Exploitation of Particle Migration Mechanism to Promote Economy and Ecology in Concrete Technology
Key Engineering Materials, 2006The 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, J. Hu, Martijn Stroeven
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olymethylsilsesquioxane Oligomers as Ecologically Friendly Binding Agents for Particle Boards
INEOS OPENThe possibility of using multifunctional methylsilsesquioxane oligomers as ecologically friendly binding agents for wood chipboards is investigated. The physical and mechanical properties of the resulting particle boards are studied and compared with those of the boards containing a formaldehyde resin as a binder.
E. A. Litvinov +5 more
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