Results 11 to 20 of about 3,547,769 (181)

Realistic Models of Biological Motion [PDF]

open access: yesPhysica A: Statistical Mechanics and its Applications, 1998
The origin of biological motion can be traced back to the function of molecular motor proteins. Cytoplasmic dynein and kinesin transport organelles within our cells moving along a polymeric filament, the microtubule.
Ajdari   +42 more
core   +3 more sources

Lagrangians for Biological Models [PDF]

open access: yesJournal of Nonlinear Mathematical Physics, 2012
We show that a method presented in [S.L. Trubatch and A. Franco, Canonical Procedures for Population Dynamics, J. Theor. Biol. 48 (1974), 299-324] and later in [G.H. Paine, The development of Lagrangians for biological models, Bull. Math. Biol. 44 (1982) 749-760] for finding Lagrangians of classic models in biology, is actually based on finding the ...
M.C. Nucci, K.M. Tamizhmani
openaire   +6 more sources

Modelling Biological Rhythms [PDF]

open access: yesCurrent Biology, 2008
With our growing awareness of the complexity underlying biological phenomena, our need for computational models becomes increasingly apparent. Due to their properties, biological clocks have always lent themselves to computational modelling. Their capacity to oscillate without dampening--even when deprived of all rhythmic environmental information ...
Eduardo R. Mendoza   +4 more
openaire   +3 more sources

A Biological Model of Unions [PDF]

open access: yesAmerican Economic Journal: Applied Economics, 2009
This paper applies principles from evolutionary biology to the study of unions. We show that unions that implement the preferred wage and organizing policies of workers will be displaced in evolutionary competition by unions that either extract less from firms, allowing them to live longer, or spend more on union organizing, or both. This implies that
Kremer, Michael, Olken, Benjamin A.
openaire   +5 more sources

Robust Modelling of Biological Neuroregulators [PDF]

open access: yes2005 IEEE Engineering in Medicine and Biology 27th Annual Conference, 2005
The modelling of biological neuroregulated systems is usually complex because of their non-structured and distributed architecture. Software agents are a very useful tool to use in the modelling of this kind of systems, allowing increasing the model with characteristics which are not present in the biological equivalent. This work proposes a model of a
D.R. Fernandez   +5 more
openaire   +5 more sources

New Prenylated Indole Homodimeric and Pteridine Alkaloids from the Marine-Derived Fungus Aspergillus austroafricanus Y32-2

open access: yesMarine Drugs, 2021
Chemical investigation of secondary metabolites from the marine-derived fungus Aspergillus austroafricanus Y32-2 resulted in the isolation of two new prenylated indole alkaloid homodimers, di-6-hydroxydeoxybrevianamide E (1) and dinotoamide J (2), one ...
Peihai Li   +7 more
doaj   +1 more source

Reaction-diffusion models for biological pattern formation [PDF]

open access: yes, 2001
We consider the use of reaction-diffusion equations to model biological pattern formation and describe the derivation of the reaction-terms for several illustrative examples.
Crampin, E. J., Maini, P. K.
core   +1 more source

Automatic landmarking for building biological shape models [PDF]

open access: yes, 2002
We present a new method for automatic landmark extraction from the contours of biological specimens. Our ultimate goal is to enable automatic identification of biological specimens in photographs and drawings held in a database.
Bayer, M.M.   +5 more
core   +3 more sources

On validation and invalidation of biological models [PDF]

open access: yesBMC Bioinformatics, 2009
Very frequently the same biological system is described by several, sometimes competing mathematical models. This usually creates confusion around their validity, ie, which one is correct. However, this is unnecessary since validity of a model cannot be established; model validation is actually a misnomer.
Anderson, J, Papachristodoulou, A
openaire   +4 more sources

Dietary DHA during development affects depression-like behaviors and biomarkers that emerge after puberty in adolescent rats

open access: yesJournal of Lipid Research, 2015
DHA is an important omega-3 PUFA that confers neurodevelopmental benefits. Sufficient omega-3 PUFA intake has been associated with improved mood-associated measures in adult humans and rodents, but it is unknown whether DHA specifically influences these ...
Michael J. Weiser   +3 more
doaj   +1 more source

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