Results 11 to 20 of about 171,477 (245)
Estrategias campesinas de sobrevivencia en agroecosistemas alto-andinos
Siembra, 2023 En la parroquia Chugchilán, provincia de Cotopaxi, se realizó un estudio con enfoque sistémico para identificar las estrategias campesinas de sobrevivencia en zonas sobre 3.000 m s.n.m.
Christian Vicente Tamayo Ortiz +4 more
doaj +1 more source
Animals, 2022 The Andean cat (Leopardus jacobita) is one of the most endangered and least known wild cat species in the Americas and the world in general. We describe new records of the Andean cat in the central Andes of Chile, in Parque Andino Juncal, obtained as ...
María Belén Zapararte +7 more
doaj +1 more source
Acta Scientiarum. Health Sciences, 2011 A presente pesquisa caracterizou-se em determinar a prevalência da dissociação ocular e manual em crianças com dislexia do desenvolvimento em idade escolar comparadas com crianças normais, pertencentes a escolas públicas.
Marielza Regina Ismael Martins +3 more
doaj +1 more source
Spectral Flows and Twisted Topological Theories [PDF]
, 1995 We analyze the action of the spectral flows on N=2 twisted topological theories. We show that they provide a useful mapping between the two twisted topological theories associated to a given N=2 superconformal theory. This mapping can also be viewed as a
Beatriz Gato-Rivera +19 more
core +2 more sources
Diaza-1,3-butadienes as Useful Intermediate in Heterocycles Synthesis
Molecules, 2022 Many heterocyclic compounds can be synthetized using diaza-1,3-butadienes (DADs) as key structural precursors. Isolated and in situ diaza-1,3-butadienes, produced from their respective precursors (typically imines and hydrazones) under a variety of ...
Jorge Heredia-Moya +3 more
doaj +1 more source
Transmutations between Singular and Subsingular Vectors of the N=2 Superconformal Algebras [PDF]
, 1999 We present subsingular vectors of the N=2 superconformal algebras other than the ones which become singular in chiral Verma modules, reported recently by Gato-Rivera and Rosado.
Ademollo +33 more
core +3 more sources
Ecuador es Calidad, 2017 El peróxido de hidrógeno, en leche cruda, es utilizado para enmascarar la acidez de leche contaminada con bacterias y perjudica a microorganismos beneficiosos para la elaboración de derivados.
Silvia Jurado +5 more
doaj +1 more source
The Even and the Odd Spectral Flows on the N=2 Superconformal Algebras [PDF]
, 1997 There are two different spectral flows on the N=2 superconformal algebras (four in the case of the Topological algebra). The usual spectral flow, first considered by Schwimmer and Seiberg, is an even transformation, whereas the spectral flow previously ...
Ademollo +29 more
core +4 more sources
La fórmula de tratamiento gato entre jóvenes de una escuela de Buenos Aires
Filología, 2022 El objetivo del presente trabajo consiste en analizar las funciones de la fórmula de tratamiento gato en jóvenes. La propuesta teórico-metodológica reúne desarrollos en pragmática sociocultural (Bravo, 1999), metodología etnográfica (Hymes, 1986) y ...
Gabriel Hernández
doaj +1 more source
Singular dimensions of the N=2 superconformal algebras. I [PDF]
, 1998 Verma modules of superconfomal algebras can have singular vector spaces with dimensions greater than 1. Following a method developed for the Virasoro algebra by Kent, we introduce the concept of adapted orderings on superconformal algebras.
Doerrzapf, Matthias +1 more
core +3 more sources