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Mostrando ítems 1-10 de 14
Artículo
Site-directed Mutagenesis of Cytochromec 6 from Synechocystissp. PCC 6803
(Elsevier, 1999)
This paper reports the first site-directed mutagenesis analysis of any cytochrome c 6, a heme protein that performs the same function as the copper-protein plastocyanin in the electron transport chain of photosynthetic ...
Artículo
Study of a diastereoisomeric dihydrothiophene derivative at 150 K
(International Union of Crystallography, 1999)
Artículo
Detection and analysis of genetic variation in Salicornieae (Chenopodiaceae) using random amplified polymorphic DNA (RAPD) markers
(International Bureau for Plant Taxonomy and Nomenclature, 1995)
Representatives of Arthrocnemum, Salicornia and Sarcocornia were analysed using RAPO. The methods used were optimized by testing different conditions of the parameters. The genetic characterization of the mentioned taxa ...
Artículo
A geometrical coefficient implying the fixed point property and stability results
(University of Houston, 1996)
In this paper we define a new geometric constant M(X) in Banach spaces such that X has the fixed point property for nonexpansive mappings if M(X) > 1. We prove that M(X) •_ WCS(X), the inequality being strict in many ...
Artículo
Remarks on multivalued nonexpansive mappings
(Soochow University, 1995-01)
Convergence of fixed point sets of multivalued nonexpansive mappings is studied under both the Mosco and Hausdorff senses. A characterization for *- nonexpansive multivalued mappings is given. Also a counterexample is ...
Artículo
Metallicity maps of the globular cluster system in the galaxy
(IOP Publishing Ltd., 1993-01-10)
The spatial metallicity distribution in the Galaxy, as depicted by the globular cluster system, is analyzed. Two metallicity maps (on the ω - |Z| plane) corresponding to the halo and disk subsamples (Zinn 1985) have been ...
Artículo
N-acetyl-2,3,4,6-tetra-O-acetyl-N-benzyl-β-D-glucopyranosylamine
(International Union of Crystallography, 1997)
The solid-state conformation of the title compound, C23H29NOIo, has been unequivocally established. The configuration at C 1 is/3-D-glucopyranose and the pyranose ring is essentially a perfect chair. Only the E ...
Artículo
Convergence in mean of weighted sums of {an,k}-compactly uniformly integrable random elements in Banach spaces
(Hindawi, 1997)
The convergence in mean of a weighted sum ka.k(Xk EXk) of random elements in a separable Banach space is studied under a new hypothesis which relates the random elements with their respective weights in the sum: the {a.. ...
Artículo
The presence of glutamate dehydrogenase is a selective advantage for the cyanobacterium Synechocystis sp. strain PCC 6803 under nonexponential growth conditions
(American Society for Microbiology, 1999)
he unicellular cyanobacterium Synechocystis sp. strain PCC 6803 has two putative pathways for ammonium assimilation: the glutamine synthetase- glutamate synthase cycle, which is the main one and is finely regulated by the ...
Artículo
An evaluation of clay minerals as support materials in anaerobic digesters
(Taylor & Francis, 1998)
The use of different clay rninerals as support in anaerobic digestion has been studied: The suppon materials were evaluated in a batch microd.igester and their effect in the digestion process was measured ar the beginning ...