Results 291 to 300 of about 747,285 (331)
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Population biology of multispecies helminth infection: Competition and coexistence

Journal of Theoretical Biology, 2007
The role that interspecific interactions play in shaping parasite communities is uncertain. To date, models of competition between helminth species have assumed that interaction occurs through parasite-induced host death. To our knowledge, there has been no theoretical exploration of other forms of competition.
María-Gloria Basáñez   +2 more
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Synthetic Biology and the International Genetically Engineered Machines Competition

BIOS, 2010
? JM T^e are excited to share an exciting new m/m/ area ?f biological research that will be V V of great interest to many TriBeta stu? dents and faculty mentors. As biology and math? ematics faculty mentors ourselves with a long? standing commitment to undergraduate research, we have advised students working on a variety of research topics, including ...
Jeffrey L. Poet   +3 more
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Comparative biology of two closely related species ofEuphorbia — Competitive relationships [PDF]

open access: possibleProceedings / Indian Academy of Sciences, 1980
The present study reveals a variety of competitive interactions between the two species ofEuphorbia—Euphorbia hirta andEuphorbia thymifolia depending upon the calcium status of the soil. In general,Euphorbia thymifolia suffered high mortality in low calcium soils as compared toEuphorbia hirta. The former, however, showed better survival in high calcium
C Kanta, P S Ramakrishnan
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Modeling Competition in the Telecommunications Market Based on Concepts of Population Biology

IEEE Transactions on Systems, Man, and Cybernetics, Part C (Applications and Reviews), 2011
Based on concepts of ecology modeling and specifically on population biology, a methodology for describing a high-technology market's dynamics is developed and presented. The importance of the aforementioned methodology is its capability to estimate and forecast the degree of competition, market equilibrium, and market concentration, the latter ...
Dimitris Varoutas   +2 more
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The mathematics of resource allocation in population Biology. I. interspecific competition

Applied Mathematics and Computation, 1989
Frequency- and density-dependent selection models in the case of interspecific competition are studied. Several definitions of evolutionary stability and sufficient conditions of it are proposed. The stability of phenotypic equilibria is studied using the center manifold theory and an appropriate coupling of dynamic equations.
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Triggering positive competition [PDF]

open access: possibleNature, 2006
In most bacteria, a molecule known as trigger factor prevents misfolding of newly made proteins emerging from their ribosome factory. The dynamic action of this molecule has been followed using fluorescence spectroscopy.
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Molecular biology: In competition, actin filament turnover saves the day

Current Biology
Cellular actin cytoskeleton networks compete for limited actin monomers. New in vitro reconstitutions with purified proteins reveal that without network turnover, the strongest networks monopolize all the resources. However, with turnover, weaker networks survive and coexist with stronger networks.
Cristian, Suarez, David R, Kovar
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The Principle of Competitive Exclusion in Population Biology

1983
It is often observed in nature that the struggle for existence between two similar species competing for the same limited food supply and living space nearly always ends in the complete extinction of one of the species. This phenomenon is known as the “principle of competitive exclusion,” and was first enunciated, in a slightly different form, by ...
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Competition or Monopoly? The Implications of Complexity Science, Chaos Theory, and Evolutionary Biology for Antitrust and Competition Policy

The Antitrust Bulletin, 2006
Predicting the competitive and economic impacts of business conduct and relationships ranging from horizontal marketing joint ventures to vertical restraints demands an assessment and understanding of "immeasurable dynamic relationships." Despite the assiduous efforts of economists and lawyers to bring order and predictability to the competitive ...
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