Results 111 to 120 of about 837,525 (210)

OFICINA DO HISTORIADOR ENTREVISTA

open access: yesOficina do Historiador, 2014
Entrevista com o historiador Rodrigo Patto Sá Motta.
openaire   +4 more sources

Co-Expression of Wild-Type P2X7R with Gln460Arg Variant Alters Receptor Function [PDF]

open access: yes, 2016
The P2X7 receptor is a member of the P2X family of ligand-gated ion channels. A single-nucleotide polymorphism leading to a glutamine (Gln) by arginine (Arg) substitution at codon 460 of the purinergic P2X7 receptor (P2X7R) has been associated with mood ...
Acuña, Matias   +15 more
core   +5 more sources

Differential structure of the Thompson components of selfadjoint operators [PDF]

open access: yes, 2008
Different equivalence relations are defined in the set L(H)s of self- adjoint operators of a Hilbert space H in order to extend a very well known relation in the cone of positive operators.
Fongi, Guillermina   +1 more
core   +1 more source

Schur complements in Krein spaces [PDF]

open access: yes, 2007
The aim of this work is to generalize the notions of Schur complements and shorted operators to Krein spaces. Given a (bounded) J-selfadjoint operator A (with the unique factorization property) acting on a Krein space H and a suitable closed subspace S ...
Maestripieri, Alejandra Laura   +1 more
core   +1 more source

Oblique projections and frames [PDF]

open access: yes, 2006
We characterize those frames on a Hilbert space H which can be represented as the image of an orthonormal basis by an oblique projection defined on an extension K of H.
Antezana, Jorge Abel   +3 more
core   +2 more sources

Diversidad de maiz en la sierra sur de Oaxaca, México: conocimiento y manejo tradicional.

open access: yesPolibotánica, 2017
El estado de Oaxaca representa un importante acervo de maíz en México. Estudios previos han indicado la presencia de muchas variedades locales y razas agronómicas en la Sierra Norte y Valles Centrales.
Beatriz Rendón-Aguilar   +14 more
doaj  

Diversidad de maiz en la sierra sur de Oaxaca, México: conocimiento y manejo tradicional.

open access: yesPolibotánica, 2015
El estado de Oaxaca representa un importante acervo de maíz en México. Estudios previos han indicado la presencia de muchas variedades locales y razas agronómicas en la Sierra Norte y Valles Centrales.
Beatriz Rendón-Aguilar   +14 more
doaj  

Non positively curved metric in the space of positive definite infinite matrices [PDF]

open access: yes, 2007
We introduce a Riemannian metric with non positive curvature in the (infinite dimensional) manifold Σ∞ of positive invertible operators of a Hilbert space H, which are scalar perturbations of Hilbert-Schmidt operators.
Andruchow, Esteban, Varela, Alejandro
core  

Los impuestos medioambientales en Cuba: Una asignatura pendiente

open access: yesRevista Cubana de Finanzas y Precios, 2018
El presente trabajo tiene como objetivo ilustrar el comportamiento de la recaudación de impuestos medioambientales en Cuba en los últimos cinco años, los obligados al pago, la interacción de autoridades ambientales con la administración tributaria y el ...
Juan Carlos Vilaseca Méndez   +1 more
doaj  

Oficina parisina, oficina genovesa

open access: yes, 2017
Lo scritto analizza il metodo progettuale dello studio Renzo Piano Building ...
openaire   +1 more source

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