Ciencias básicas
Collections in this community
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Biología [828]
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Física [51]
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Geología [100]
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Matemática [75]
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Meteorología [287]
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Química [135]
Recent Submissions
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Correction to: The chirality theorem
(2018-10) -
The Kirillov picture for the Wigner particle
(2018-06)We discuss the Kirillov method for massless Wigner particles, usually (mis)named "continuous spin" or "infinite spin" particles. These appear in Wigner's classification of the unitary representations of the Poincaré group, ... -
String chopping and time-ordered products of linear string-localized quantum fields
(2018-03)For a renormalizability proof of perturbative models in the Epstein-Glaser scheme with string-localized quantum fields, one needs to know what freedom one has in the definition of time-ordered products of the interaction ... -
The chirality theorem
(2018-03)We show how chirality of the weak interactions stems from string independence in the string-local formalism of quantum field theory. -
Recomendaciones para mejorar el manejo de comederos artificiales para colibríes
(2019)El uso de comederos artificiales para alimentar a las aves es una práctica extendida y de uso generalizado principalmente en sitios turísticos, tales como hoteles de montaña, parques naturales, y jardines privados. En el ... -
Shade tolerance within the context of the successional process in tropical rain forests
(2019)Abstract: Shade tolerance (the capacity to survive and grow over long periods under shade) is a key component of plant fitness and the foundation of current theories of forest succession in tropical rain forests. It serves ... -
On the kinematics of the last Wigner particle
(2019)Wigner's particle classification provides for "continuous spin" representations of the Poincaré group, corresponding to a class of (as yet unobserved) massless particles. Rather than building their induced realizations by ... -
Aspectos Climáticos del Parque Nacional Santa Rosa. Periodo de enero de 2011 a enero de 2019
(2020-03-06)Se presentan las climatologías de distintos aspectos climáticos de la lluvia y la tempreratura en el Parque Nacional Santa Rosa, Costa Rica, América Central, a partir de observaciones hechas in situ por el personal del ... -
Proyecciones de cambio climático en la parte terrestre del Área de Conservación Guanacaste (ACG)
(2017-12-01)Se seleccionaron 14 corridas de modelos climáticos globales de circulación general que generan proyecciones climáticas mensuales de precipitación y temperaturadel grupo llamado (CMIP5), AR5, IPCC. La selección de los ... -
Behavioral changes across novelty habituation: Contextual modulation of self-grooming after a stress event
(2018-07)Grooming is a widespread behavior in the animal kingdom primarily geared towards the care of the body surface; nonetheless, other behavioral functions have been investigated and postulated. For example, rodents display ... -
Variations of Hodge Structures of Rank Three k-Higgs Bundles and Moduli Spaces of Holomorphic Triples
(2020)There is an isomorphism between the moduli spaces of σ-stable holomorphic triples and some of the critical submanifolds of the moduli space of k-Higgs bundles of rank three, whose elements (E, ϕk ) correspond to variations ... -
Stratifications on the Nilpotent Cone of the moduli space of Hitchin pairs
(2020)We consider the problem of finding the limit at infinity (corresponding to the downward Morse flow) of a Higgs bundle in the nilpotent cone under the natural C ∗ -action on the moduli space. For general rank we provide ... -
Propuestas metodológicas para el rellenado de datos ausentes en series de tiempo geofísicas. Guía Práctica de uso.
(2016-08)En un trabajo reciente, Alfaro y Soley (2009), presentaron dos metodologías para el rellenado de datos ausentes, enfocadas hacia su uso en series de tiempo geofísicas. Una de ellas se basó en la descomposición en componentes ... -
Antifungal compounds
(2013-06-03)Compounds of formula (I) or formula (II), compositions and methods useful for treating and/or preventing a fungal infections are provided. wherein the substituents are as defined in the appended claims. -
Polifenoides de Uncaria Tormentosa y propiedades fitoterapéuticas de uña de gato costarricense
(2012-12-18)Esta invención se refiere a extractos fenólicos conteniendo procianidinas, propelargonidinas y flavanolignanos, con propiedades/actividades potencialmente beneficiosas para la salud humana, y obtenidos a partir de las ... -
Transformation of humic substances by the freshwater Ascomycete Cladosporium sp.
(2017)The ecological relevance of fungi in freshwater ecosystems is becoming increasingly evident, particularly in processing the extensive amounts of polymeric organic carbon such as cellulose, chitin, and humic substances (HS). ... -
A New Parasitic Chytrid, Staurastromyces oculus (Rhizophydiales, Staurastromycetaceae fam. nov.), Infecting the Freshwater Desmid Staurastrum sp.
(2017-08)Chytrids are a diverse group of ubiquitous true zoosporic fungi. The recent molecular discovery of a large diversity of undescribed chytrids has raised awareness on their important, but so far understudied ecological role ... -
Microplastics alter composition of fungal communities in aquatic ecosystems
(2017)Despite increasing concerns about microplastic (MP) pollution in aquatic ecosystems, there is insufficient knowledge on how MP affect fungal communities. In this study, we explored the diversity and community composition ... -
Microplastic pollution increases gene exchange in aquatic ecosystems
(2018-06)Pollution by microplastics in aquatic ecosystems is accumulating at an unprecedented scale, emerging as a new surface for biofilm formation and gene exchange. In this study, we determined the permissiveness of aquatic ... -
Aquatic fungi: targeting the forgotten in microbial ecology
(2016-06)Fungi constitute important and conspicuous components of aquatic microbial communities, but their diversity and functional roles remain poorly characterized. New methods and conceptual frameworks are required to accurately ...
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