Search results for "IPA"
showing 10 items of 5795 documents
La importancia de la participación ciudadana en los programas de recogida selectiva de residuos sólidos urbanos. Análisis de la población inmigrante …
2012
El manejo de la creciente producción de residuos es uno de los problemas ambientales más complejos con los que se ha enfrentado la humanidad. En concreto la responsabilidad de la sociedad consumidora es la de separar los residuos que se generan en el entorno doméstico con la máxima calidad posible y depositarlos posteriormente en los puntos de recogida correctos. El gesto de realizar estas acciones de manera adecuada, condiciona todo el proceso subsiguiente de gestión de los residuos. Por tanto, esta acción se constituye como una conducta en pro del medio ambiente y, tendrá un impacto más significativo en la medida en que más personas se sumen a realizar estas mismas acciones. La escasez de…
Conductes prosocials i responsabilitat social universitària: a la recerca d’un cercle virtuós?
2019
espanolAnte un contexto social con dificultades asociadas a altos indicadores de violencia, se efectua una revision bibliografica de articulos publicados hasta el ano 2017, con las palabras clave conducta prosocial, programas de intervencion y responsabilidad social a fin de reflexionar respecto de la relacion entre el desarrollo de conductas prosociales y la responsabililidad dad social universitaria (RSU). Lo anterior ha permitido plantear la posibilidad de circulos virtuosos que junto con favorecer la prosocialidad en futuros universitarios, propicie que adultos formados en rsu favorezcan contextos de desarrollo prosociales para futuras generaciones. catalaDavant d’un context social amb …
Gobierno político y luchas sociales: patricios y malhechores. Siglos XIV y XV
1989
El gobierno municipal de Valencia desde mediados del siglo XIV se encuentra monopolizado por una oligarquía de ciudadanos. El patriciado urbano queda claramente diferenciado del resto de los habitantes de la ciudad, especialmente por sus actividades políticas y por su reproducción en el poder. Este grupo social no se identificaba con la "burguesía medieval" estando envuelto en las banderías nobiliarias que asolaban la ciudad, cuyo objetivo era el control del gobierno ciudadano, y también la política que desde allí guiaba los designios ciudadanos.
Disputas por el poder municipal y reforzamiento regio en el realengo valenciano. De la derrota agermanada a las cortes de 1604
2021
La introducción del procedimiento electoral de insaculación en buena parte de los municipios valencianos trató de justificarse por su virtualidad para erradicar o reducir la conflictividad generada por los tradicionales mecanismos de cooptación. Las disputas, sin embargo, no desaparecieron con el nuevo sistema y tuvieron oportunidad de expresarse en distintas fases de su aplicación. A partir del análisis de una amplia casuística se trata de mostrar las modalidades que adoptó, en el plano electoral, la pugna por el poder municipal en el marco de la insaculación durante el siglo xVI, así como su incidencia en el creciente fortalecimiento de los órganos y oficiales de la administración regia, …
Long-chain fatty acyl-CoA esters induce lipase activation in the absence of a water-lipid interface.
2003
In most lipases a mobile element or lid domain covers the catalytic site of the enzyme and the lid opening event, which usually proceed at a lipid-water interface, is required to form the catalytically competent lipase. We report here a noticeable increase in activity of two fungal lipases assayed in aqueous solution in absence of any interface when adding submicellar concentrations of amphipathic physiological molecules like long-chain acyl-CoAs. The catalytic activity was dramatically dependent on the acyl chain length of the amphiphile and could be related with a lid-opening process. Our data support that lipase activation can be triggered in the absence of a well-defined interface, and …
Impact of Pulsed Electric Fields on Enzymes
2017
International audience; Pulsed electric field (PEF) processing has emerged as a promising technology in the development of tailor-made processes to effectively control the enzyme activity. It has been proven as an effective technique for the preservation of food products as it can result in substantial inactivation of most undesirable enzymes. When compared to microbial inactivation, however, large specific energy inputs are required to inactivate enzymes. The existing evidence suggests that PEF can also stimulate the activity of beneficial enzymes at low intense treatments. The PEF affects enzyme activity by changing mainly the secondary (α-helix, β-sheets, etc.), tertiary (spatial conform…
Stationary states in quantum walk search
2016
When classically searching a database, having additional correct answers makes the search easier. For a discrete-time quantum walk searching a graph for a marked vertex, however, additional marked vertices can make the search harder by causing the system to approximately begin in a stationary state, so the system fails to evolve. In this paper, we completely characterize the stationary states, or 1-eigenvectors, of the quantum walk search operator for general graphs and configurations of marked vertices by decomposing their amplitudes into uniform and flip states. This infinitely expands the number of known stationary states and gives an optimization procedure to find the stationary state c…
The Origin of Isolated Populations of the Mountain Weevil, Liparus glabrirostris—The Flagship Species for Riparian Habitats
2020
AbstractLiparus glabrirostris is one of the largest European weevils, and it has been recently proposed as the flagship species for threatened riparian habitats in the mountains. For effective conservation of its populations (and associated habitats), it is crucial to understand its history, contemporary distribution, genetic diversity and predict changes in the range, including its highly isolated populations on the Baltic coast. Here, we examined numerous populations of L. glabrirostris across almost the entire species range using phylogeography and species niche modeling (SNM) approaches. Analyses of mtDNA and nucDNA markers revealed the existence of 2 major mitochondrial lineages genera…
Buffer strips can pre-empt extinction debt in boreal streamside habitats
2013
Background Conservation of biological diversity and economical utilization of natural resources form an almost inevitable confrontation between the two. In practice, however, a balance between the two ought to be found, and in managed boreal forests, preservation of woodland key habitats is increasingly used strategy to safeguard biological diversity. According to the Finnish Forests Act, certain Forest Act habitat (FAH) types must be safeguarded, provided they are clearly distinguishable from their surroundings. Furthermore, once the habitat has been identified as a FAH, its special characteristics must not be altered. Both of these aspects contain ambiguities that potentially undermine th…
Geographic Distribution and Niche Divergence of Two Stinkbugs,Parastrachia japonensisandParastrachia nagaensis
2014
Parastrachiidae is a small stinkbug family containing only one genus and two species, Parastrachia japonensis (Scott) (Hemiptera: Heteroptera: Pentatomoidea) and Parastrachia nagaensis Distant. The geographic distribution of the genus has been poorly studied. Niche conservatism refers to that idea that closely related species are more ecologically similar than would be expected, whereas niche divergence predicts they occupy distinct niche spaces. The existence of only two species within one genus suggests niche conservatism or differentiation might exist among them. Herein, the distribution of the genus was mapped, potential distributions were predicted using ecological niche modeling, and …