1,096 research outputs found
A política nacional de recursos hídricos e a gestão ambiental das microbacias dos lajeados lambedor e 1. de março, nos anos de 1999 e 2000
No full textDissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Jurídicas. Programa de Pós-Graduação em Direito.A implementação da Política Nacional de Recursos Hídricos (Lei 9.433/97), não respeita o princípio da descentralização das decisões. O espaço oferecido à sociedade civil, nos órgãos do Sistema Nacional de Recursos Hídricos, vem sendo ocupado por instituições que não a representam. As decisões no estudo de caso privilegiam interesses econômicos, em detrimento dos direitos fundamentais
153) DE CURTIS O., ANTONUCCI A., SALA B., PERESANI M. - 2006. Considerazioni paleoambientali dai reperti a micromammiferi di Grotta del Clusantin (Tardiglaciale, Altopiano di Pradis, Prealpi Carniche)
No full textSi presentano i dati dello studio dei micromammiferi della Grotta del Clusantin (Atopiano di Pradis, Pordenone) che forniscono un quadro paleoclimatico di una parte del Tardoglaciale delle Prealpi Carniche a circa 700 m di quota
X Aniversario. 37 Tercera época (2006) febrero-mayo. Gaceta de Museos
No full text- Diez años, por Emilio Montemayor - La política patrimonial ante los retos actuales, por Jesús Antonio Machuca R. - Edward S. Curtis. La fotografía como testimonio etnográfico, por Marco Antonio Carvajal Correa - Más allá de la pantalla, por Ricardo Contreras - De campamento en el museo, por Edgar Espejel Pérez y Rafael Ríos Chagolla - Planes de manejo, por Isabel Stivalet - Preservación y montaje de documentos y libros, por Lucía O. Torner Morales - Cómo sacarle provecho a las cámaras digitales, por Gliserio Castañeda García - La vitrina del mes: El mito de dos volcanes - La cédula del mes: Happy Victims - El material educativo del mes: Pitao Cocijo - Noticias y reseñas
Low-voltage activated T-type calcium currents are differently expressed in superficial and deep layers of guinea-pig piriform cortex.
No full textGABAergic networks jump-start focal seizures
No full textAbnormally enhanced glutamatergic excitation is commonly believed to mark the onset of a focal seizure. This notion, however, is not supported by firm evidence, and it will be challenged here. A general reduction of unit firing has been indeed observed in association with low-voltage fast activity at the onset of seizures recorded during presurgical intracranial monitoring in patients with focal, drug-resistant epilepsies. Moreover, focal seizures in animal models start with increased c-aminobutyric acid (GABA)ergic interneuronal activity that silences principal cells. In vitro studies have shown that synchronous activation of GABAA receptors occurs at seizure onset and causes sizeable elevations in extracellular potassium, thus facilitating neuronal recruit- ment and seizure progression. A paradoxical involvement of GABAergic networks is required for the initiation of focal seizures characterized by low-voltage fast activity, which represents the most common seizure-onset pattern in focal epilepsies.
KEY WORDS: Focal seizures, Inhibitory networks, GABA, Ictogenesis
Ni2+ slows the activation kinetics of high-voltage-activated Ca2+ currents in cortical neurons: evidence for a mechanism of action independent of channel-pore block.
No full textLong-latency, nonreciprocal reflex responses of antagonistic hindlimb muscles after cutaneous nerve stimulation in the cat.
No full textPharmacological and biophysical characterisation of high-voltage-activated Ca2+ currents in endopiriform-nucleus neurones
No full textA blocker-resistant, fast-decaying, intermediate-threshold calcium current in palaeocortical pyramidal neurons
No full textBiophysical and pharmacological diversity of high-voltage-activated calcium currents in layer II neurones of guinea-pig piriform cortex.
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