983 research outputs found
El ensanche occidental de la Córdoba Califal
El presente trabajo recoge de manera generalizada algunas consideraciones en cuanto al urbanismo de los arrabales occidentales de la Qurtuba islámica y la organización interna de la típica vivienda hispanomusulmana, con sus estancias orgnizadas en torno al patio que ejerce de elemento aglutinador, como resultado de las diversas intervenciones arqueológicas desarrolladas a raíz de la expansión urbanística de la Córdoba actual.The present work picks up in a widespread way some considerations as for the urbanism of the western suburbs in the islamis Qurtuba and the internal organization of the typical housing muslim hispanic, with its organized stays around the patio that exercises of agglutinative element, as a result of the diverse archaeological interventions developed soon after the expansion urbanistic of the current Córdoba
Hallazgo de una nueva columna miliaria perteneciente a la Via Augusta
By means of this article we let you know about the discovery of a new milliary column which belonged to the Roman Via Augusta. It has been found in the environs of La Torrecilla industrial area close to Córdoba. Its chronology based upon epigraphic analysis allow us to date it in the early years of Nero mandate.Mediante este artículo damos a conocer una nueva columna miliaria correspondiente a la Via Augusta y hallada en las inmediaciones del Polígono Industrial de La Torrecilla. Su cronología, basada en el análisis epigráfico, nos permite adjudicarla al emperador Nerón, en los primeros años de su mandato
Contribución al conocimiento del género Anthyllis L. (Fabaceae) en la Península Ibérica A. plumosa sp. nov
Se realiza un estudio morfológico, palinológico y cariológico de tres especies del
género Anthyllis (sect. Oreanthyllis), describiéndose una nueva especie, A. plumosa E. Domínguez
procedente de las arenas dolomíticas de la Sierra de Almijara (Málaga).In this paper a morphological, palynological and caryological study of three species
of Anthyllis (sect. Oreanthyllis) is included. As a consecuence a new species A. plumosa
E. Domínguez from the dolomitics sands of Sierra de Almijara (Málaga) is described
Hamiltonian Noether theorem for gauge systems and two time physics
The Noether theorem for Hamiltonian constrained systems is revisited. In
particular, our review presents a novel method to show that the gauge
transformations are generated by the conserved quantities associated with the
first class constraints. We apply our results to the relativistic point
particle, to the Friedberg et al. model and, with special emphasis, to two time
physics.Comment: 20 pages, Latex, references added, the "massless" sense of (87) is
clarifie
Contribución al conocimiento del género Anthyllis L. (Fabaceae) en la Peninsula Ibérica. A. plumosa sp. nov.
In this paper a morphological, palynologicaland caryologicalstudy of three species of Anthyllis (sect. Oreanthyllis)is included. As a consecuencea newspecies A.plumosa E. Domínguez from the dolomitics sands of Sierra de Almijara (Málaga) is described.Se realiza un estudio morfológico, palinológico y cariológico de tres especies del género Anthyllis (sect. Oreanthyllis), describiéndose una nueva especie, A. plumosa E. Domínguez procedente de las arenas dolomíticas de la Sierra de Almijara (Málaga)
The role of impulsivity in dropout from treatment for cigarette smoking
AbstractImpulsivity is a variable that has been associated with drug use. This study analyzes impulsivity from two different paradigms, one considering it as a trait and the other based on its behavioral correlates, such as disinhibition and impulsive decision-making in the treatment prognosis (maintain abstinence, relapse and dropout) of smokers after outpatient treatment. The participants in the study were 113 smokers who requested treatment for nicotine addiction. They were assigned to three groups according to whether or not they remained abstinent one month after beginning treatment; thus, group 1 was abstinent, group 2 had relapsed, and group 3 had dropped out of treatment. The participants filled out the Semi-structured Interview for Smokers, the Fargerström Test for Nicotine Dependence, the Temperament and Character Inventory-Revised (TCI-R) and the Delay Discounting Task (DDT). The Delay Discounting variable presents lower scores in the dropout group than in the relapse and abstinent groups, with the highest scores in the relapse group. Differences were also found on the Harm Avoidance (HA) variable, with lower scores in the dropout group compared to the relapse group. The importance of these results lies in the consideration of the smoker’s personality profile in order to prevent both dropout and relapse
Influencia del clembuterol-Clb en los procesos homeostáticos que inhibe la conservación de especies criollas en bovinos: Influência do clembuterol-Clb nos processos homeostáticos que inibe a conservação de espécies crioulas em bovinos
El clenbuterol-Clb calificado como un potente bronco-vaso-dilatador, repartidor de grasa, agente tocolitico (retardador del parto), utilizado para controlar enfermedades respiratorias, tanto en animales como en humanos; el Clb es un β2-agonista-adrenérgico (β2-AA), el cual, causa incremento de la masa muscular en aves, bovinos, cabras y ovejas, sin embargo, las rutas metabólicas y el modo de acción hasta el presente no están bien dilucidadas; el objetivo de este estudio consistió en determinar los metabolitos que surgen con la ingesta del clembuterol y sus `posibles derivados que se almacenan en la estructura hepática, páncreas, glándula suprarrenal, músculos y órganos genitales en bovinos. Además, se sabe que el contenido de grasa es reducido dramáticamente cuando el clembuterol es utilizado como anabólico, entendiendo como anabólico, cuando el Clb se administra de forma oral o intramuscular por arriba de la dosis terapéutica, entre 5 y 10 veces su concentración terapéutica (0.8µg/peso corporal dos veces al día). Para este estudio de midieron 17 metabolitos diferentes con el propósito de determinar cuáles son los parámetros metabólicos que son perturbados por este aditivo, y que impiden los procesos de equilibrio intra y extracelular llamado homeostasis, esto a nivel de los diferentes órganos en el que interviene. Se estudiaron 2567 bovinos: el 95% machos y el 5% hembras (Bos taurus X Bos indicus), los resultados revelaron que son varios los metabolitos que son alterados por el clembuterol entre estos tenemos a: a la glucosa, triglicéridos, colesterol, bilirrubina y el Calcio y enzimas a nivel hepático como: fosfatasa alcalina, gamma glutamil transferasa, transaminasas (ALT/GPT y AST/GOT), deshidrogenas láctica; fosfatasa acida: FA-total, FA-prostático y FA-no prostática, los datos muestran que el Clb tiene un efecto en alterar el metabolismo de varias rutas metabólicas; contribuyendo a que posee actividad lipolítica, y anti-lipogénicas e induce a la retención de nitrógeno, aumenta la glicolisis, la producción de lactato y el consumo de oxígeno, incrementa los niveles de glucosa, que varía de acuerdo al tiempo de tratamiento o que es suministrado, ya que a nivel del páncreas disminuye la insulina y los adipocitos son menos sensibles a este aditivo, se detectó el incremento en la utilización de energía y esto produce el aumento de la temperatura corporal llamada termogénesis y que repercute en el desarrollo de patologías en la calidad espermática de los bovinos e infertilidad en hembras bovinas a nivel hormonal, también aumenta los intervalos entre partos-anestro; estas anomalías desarrolladas son activadas por el uso de este aditivo alimenticio Clb. Estos datos determinan que este aditivo tiende a disminuir la sustentabilidad de esta especie. 
Bacterioplankton responses to riverine and atmospheric inputs in a coastal upwelling system (Ría de Vigo, NW Spain)
Original research paperAnthropogenic pressures are changing the magnitude and nature of matter inputs
into the ocean. The Ría de Vigo (NW Spain) is a highly productive and dynamic coastal system that
is likely affected by such alterations. Previous nutrient-addition microcosm experiments conducted during contrasting hydrographic conditions suggested that heterotrophic bacteria are limited by organic carbon (C) and occasionally co-limited by inorganic nutrients in this coastal area.
In order to assess short-term responses in biomass, production, and respiration of heterotrophic
bacteria from the Ría de Vigo to increasing amounts of natural inputs of matter, we conducted 6
microcosm experiments, wherein surface seawater collected in spring, summer, and autumn was
mixed with increasing amounts of dissolved natural matter concentrates from riverine and atmospheric origin. Simultaneous experiments with controlled inorganic and/or organic additions
indicated that bacteria were co-limited by inorganic nutrients and C in spring and summer and
primarily limited by C in autumn. Production responded more than biomass to increasing inputs
of matter, whereas respiration did not change. The bacterial production response to increasing
dissolved organic C load associated with riverine and atmospheric inputs was strongly related to
the relative phosphorus (P) content of the dissolved matter concentrates. Our data suggest that
bacterial production might decrease with the increase of P-deficient allochthonous matter inputs,
which would have important biogeochemical consequences for C cycling in coastal areas.Spanish Ministry of Science and Innovation, MINECO, CSIC, Xunta of Galicia and European Union (Marie Curie Grants)Versión del edito
Bacterioplankton responses to riverine and atmospheric inputs in a coastal upwelling system (Ría de Vigo, NW Spain)
12 páginas, 5 figuras, 2 tablasAnthropogenic pressures are changing the magnitude and nature of matter inputs into the ocean. The Ría de Vigo (NW Spain) is a highly productive and dynamic coastal system that is likely affected by such alterations. Previous nutrient-addition microcosm experiments conducted during contrasting hydrographic conditions suggested that heterotrophic bacteria are limited by organic carbon (C) and occasionally co-limited by inorganic nutrients in this coastal area. In order to assess short-term responses in biomass, production, and respiration of heterotrophic bacteria from the Ría de Vigo to increasing amounts of natural inputs of matter, we conducted 6 microcosm experiments, wherein surface seawater collected in spring, summer, and autumn was mixed with increasing amounts of dissolved natural matter concentrates from riverine and atmospheric origin. Simultaneous experiments with controlled inorganic and/or organic additions indicated that bacteria were co-limited by inorganic nutrients and C in spring and summer and primarily limited by C in autumn. Production responded more than biomass to increasing inputs of matter, whereas respiration did not change. The bacterial production response to increasing dissolved organic C load associated with riverine and atmospheric inputs was strongly related to the relative phosphorus (P) content of the dissolved matter concentrates. Our data suggest that bacterial production might decrease with the increase of P-deficient allochthonous matter inputs, which would have important biogeochemical consequences for C cycling in coastal areasThis research was supported by the Spanish Ministry of Science and Innovation through
project REIMAGE (grants CTM2011-30155-C03-01 and CTM2011-30155-C03-02)
and by the Xunta the Galicia trough project DIMENSION (grant EM2013/023). E. B-L
was funded by a F.P.I. MICINN fellowship. M.N.-C. was funded by the CSIC Program
"Junta para la Ampliación de Estudios" co-financed by the ESF. S.M.G. was funded by
a Marie Curie fellowshipPeer reviewe
Average Entropy of a Subsystem from its Average Tsallis Entropy
In the nonextensive Tsallis scenario, Page's conjecture for the average
entropy of a subsystem[Phys. Rev. Lett. {\bf 71}, 1291(1993)] as well as its
demonstration are generalized, i.e., when a pure quantum system, whose Hilbert
space dimension is , is considered, the average Tsallis entropy of an
-dimensional subsystem is obtained. This demonstration is expected to be
useful to study systems where the usual entropy does not give satisfactory
results.Comment: Revtex, 6 pages, 2 figures. To appear in Phys. Rev.
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