51 research outputs found
PolÃticas de formación profesional en el área de información en el Mercosur: reflexiones acerca de una experiencia de armonización curricular en BiblioteconomÃa
Considering the creation of Mercosul in 1991 in order to broading the national markets of Argentine, Brazil, Paraguay and Uruguay as well as to guarantee a free flow of goods, services and products, an historical overview the undergraduate library education is provided and the curricular harmonizing process started in 1996 is analyzed. Such aspects furnish background for pointing out some challenges and perspectives for building library education politics in Mercosul which could lead to an integrated higher education modelSe analiza la evolución de la formación universitaria del profesional bibliotecario, asà como el proceso de armonización curricular en el área de BiblioteconomÃa a partir de 1996, como elementos para la construcción de una polÃtica educativa que pueda conducir a un modelo integrador de educación superior en el marco del Mercosur. (A
Volatile Compounds, Chemical Composition and Biological Activities of <em>Apis mellifera</em> Bee Propolis
Propolis is a wax-like resin collected by bees from tree shoots and/or other botanical sources that is used as glue to seal cracks or open spaces in the hive. Its color varies from green to brown and reddish, depending on its botanical origin. Among the substances that can be found in propolis, low molecular weight compounds, such as monoterpenes and sesquiterpenes are the most common. Several biological activities are attributed to these classes of substances, such as antifungal, antibacterial, and others. The objective of this work was to evaluate the chemical composition of volatile compounds present in propolis samples and to analyze their correlation with biological activities
Recommended from our members
Inflation and Dark Energy from spectroscopy at z > 2
The expansion of the Universe is understood to have accelerated during two
epochs: in its very first moments during a period of Inflation and much more
recently, at z < 1, when Dark Energy is hypothesized to drive cosmic
acceleration. The undiscovered mechanisms behind these two epochs represent
some of the most important open problems in fundamental physics. The large
cosmological volume at 2 < z < 5, together with the ability to efficiently
target high- galaxies with known techniques, enables large gains in the
study of Inflation and Dark Energy. A future spectroscopic survey can test the
Gaussianity of the initial conditions up to a factor of ~50 better than our
current bounds, crossing the crucial theoretical threshold of
of order unity that separates single field and
multi-field models. Simultaneously, it can measure the fraction of Dark Energy
at the percent level up to , thus serving as an unprecedented test of
the standard model and opening up a tremendous discovery space
- …