1,362,774 research outputs found
Análisis histológico de lesiones pódales de pollos comerciales en la Planta de Sacrificio de Pollo Olympico S.A., Colombia
No full textRealizar el análisis histológico de lesiones pódales de pollos comerciales en la planta de sacrificio de Pollo Olympico S.A., Colombia con el fin de discutir aspectos sobre su retención sanitaria en plantas de sacrificio. Materiales y métodos: Se utilizó la población avícola de 10 granjas de la empresa Pollo Olympico S.A evaluando macroscópicamente 129.551 animales y microscópicamente 330 lesiones podales. El análisis histológico evaluó el tipo y la profundidad de las lesiones inflamatorias y la presencia de estructuras micóticas. Resultados: La evaluación macroscópica evidenció lesiones podales en el 64,7% de la población total de aves; la microscópica mostró un predominio de procesos inflamatorios con presentación de heterófilos (73,1%), el 19% fueron infiltrados mixtos y el 7.9% de predominio mononuclear. Las lesiones encontradas mostraron una localización principalmente subcorneal (77.9%) y la ausencia de estructuras micóticas, células gigantes o lesiones vasculares.</jats:p
Dai batteri a Bach di Daniel C. Dennett
No full textFausto Caruana, Carmela Morabito and Simone Pollo discuss Daniel Dennett’s From Bacteria to Bach and Back. The authors critically survey the book and discuss some of its key topics from different theoretical viewpoints. Caruana analyzes Dennett’s reconstruction of the evolution of mind moving some critical suggestions derived from the pragmatist tradition in philosophy of mind. Morabito discusses some couples of opposing concepts used by Dennett and discusses his conclusion about the alternative between bottom-up and top-down processes in the evolution of mind. Pollo equally tackles Dennett’s opposition between bottom-up and top-down processes as it is presented in Dennett’s account of the evolution human culture and the presumed withdrawal of human civilization from Darwinian processes
Building sustainability evaluation in the building process: the construction phase
No full textA building is the outcome of a process that starts with the decision to build and continues
throughout the production/maintenance/utilisation stages up to demolition and recycling. Such
factors as the relatively long life of most constructions, including those referred to as
“ephemeral” (compared to other industrial products), and the significance and values that
become associated with a building in the course of time enhance the importance of the
utilisation and maintenance stages. Over time, a building interacts with the user/buyer/dweller
and with its surroundings through a mechanism of “self-adjustment”, consisting of
maintenance and adaptation works. For these reasons, and in view of the quantities of
pollutants released into the air, the water and the soil from most buildings during their
serviceability stage, the building “product” should be analysed as a process whose goal is to
supply appropriate living conditions during its life cycle, and which entails a huge
commitment in terms of resources and the production of considerable quantities of emissions.
In buildings, the stages of serviceability, maintenance and adaptation to changing needs
account for most of the resources used up and the pollutants emitted. However, this does not
amount to saying that the stage of production - of the materials & components and the
building as a whole - should be rated as a negligible variable. Moreover, it is at the building
stage, and, in particular, at the design stage, that decisions affecting the future impact of a
building on the environment are made. Hence, it is important to design and construct
buildings that are able to make an efficient use of resources throughout their life cycle.
nota: Il contributo è presente nel sito del Fraunhofer Institute irbnet.de/date/iconda/CIB2512.pdf
Il recupero del Moderno: da problema a risorsa
No full textIl contributo inquadra l'ambito del recupero del patrimonio edilizio esistente del novecento all'interno delle tematiche della valorizzazione e riqualificazione della città moderna. La qualità architettonica dei manufatti edilizi, anche se non sottoposti a tutela, rappresenta un elemento importante in una prospettiva di sostenibilità. La qualità tecnologica, soprattutto dal punto di vista dei consumi energetici e del comfort, si affianca, in tal modo, alla qualità architettonica e all'energia incorporata negli oggetti edilizi quale elemento che motiva la strategia del recupero edilizio della città moderna
La valutazione dell'ecocompatibilità nelle diverse fasi del processo edilizio: la fase di produzione in opera
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Going veg: care of the animals or care of the self?
No full textMainstream animal ethics theories, such as Singer’s and Regan’s, argue in favor of dietary behaviors excluding at all animal derived products. According to those accounts, in our societies and in our present conditions of life discarding food obtained from animals is mandatory according to the demands of normative ethical theories. In my paper I will present a different approach to reflective moral vegetarianism (defined in a very broad sense). Moving from some critical remarks to mainstream arguments I will suggest the idea that vegetarianism ought to be more accurately regarded as a part of the self-development and care of the self of scrupulous moral agents. Born from personal reflections about the morality of human/non-human relationships vegetarianism should be regarded a way in which the agents shapes and cultivates her own character. Such a view about vegetarianism avoids the difficulties of mainstream arguments and it is more apt to account for the variety and richness of people actual choices about vegetarianism in ordinary moral experience
Multiple actions of Bay K 8644 on high-threshold Ca channels in adult rat sensory neurons
No full textomega-Conotoxin (omega-CgTx, 6.4 microM) failed to fully block the high-threshold Ba currents (HVA; L,N) of adult rat sensory neurons, and showed only a minor inhibitory action on the low-voltage activated current (LVA,T). In most of the CgTx-treated neurons the residual high-threshold Ba current was strongly agonized by the 1,4-dihydropyridine Bay K 8644. 1 microM Bay K 8644 enhanced 3- to 4-fold the size of this current at low membrane potentials and prolonged its deactivation kinetics by one order of magnitude. As in cardiac cells, in some neurons Bay K 8644 sped up about 3-fold the inactivation time course of the omega-CgTx-resistant Ba current, suggesting multiple actions of the dihydropyridine on neuronal high-threshold Ca channels
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