Zobrazeno 1 - 10
of 502
pro vyhledávání: '"A P De Leenheer"'
Autor:
Patel, Swati, De Leenheer, Patrick
In this work, we consider the periodic impulse control of a system modeled as a set of linear differential equations. We define a matrix that governs the qualitative behavior of the controlled system. This matrix depends on the period and effects of
Externí odkaz:
http://arxiv.org/abs/2310.07616
Publikováno v:
Journal of Lipid Research, Vol 38, Iss 4, Pp 780-789 (1997)
We present carbon-13 nuclear magnetic resonance (13C-NMR) and mass spectral data for several androstanes and estranes having a 17,17-dialkyl-18-nor-13(14)-ene substructure. These compounds are formed by a Wagner-Meerwein rearrangement of steroids bea
Externí odkaz:
https://doaj.org/article/82dda661d33e4c838128565a1855a0a5
Publikováno v:
PLoS ONE, Vol 19, Iss 4, p e0300887 (2024)
Cooperation via shared public goods is ubiquitous in nature, however, noncontributing social cheaters can exploit the public goods provided by cooperating individuals to gain a fitness advantage. Theory predicts that this dynamic can cause a Tragedy
Externí odkaz:
https://doaj.org/article/9a9b1302d5224379845253047f5da5bd
We consider a modified Rosenzweig-MacArthur predator-prey model, based on the premise that the search rate of predators is dependent on the prey density, rather than constant. A complete analysis of the global behavior of the model is presented, and
Externí odkaz:
http://arxiv.org/abs/1906.05960
We present a proof of principle for the phenomenon of the tragedy of the commons that is at the center of many theories on the evolution of cooperation. We establish the tragedy in the context of a general chemostat model with two species, the cooper
Externí odkaz:
http://arxiv.org/abs/1705.07214
Akademický článek
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Akademický článek
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Publikováno v:
Journal of Lipid Research, Vol 23, Iss 9, Pp 1362-1367 (1982)
A quantitative determination of physiological levels of all-trans-retinoic acid (vitamin A acid) in human serum has been developed. A double-phase extraction of 3.5 ml of serum followed by a specific and sensitive high performance liquid chromatograp
Externí odkaz:
https://doaj.org/article/7196196917ef4805be1c3a09837799fc
Publikováno v:
Journal of Lipid Research, Vol 23, Iss 7, Pp 1068-1072 (1982)
Owing to the lack of sensitivity and/or selectivity of the existing chemical assays, vitamin K deficiency has always been diagnosed indirectly by measuring its effect on blood coagulation. We used our recently developed multidimensional liquid chroma
Externí odkaz:
https://doaj.org/article/18a560e4b93c4e80858c25639e8e6987
Publikováno v:
Journal of Lipid Research, Vol 29, Iss 4, Pp 491-499 (1988)
In order to study the biological fate of all-trans- and cis-canthaxanthin in the brine shrimp Artemia, a quantitative method was developed for the determination of both carotenoids and their metabolic precursors in encysted embryos (cysts), nauplii,
Externí odkaz:
https://doaj.org/article/f05dd46ad99f437da1d5b8db3b39fd67