609 research outputs found

    The Crisis of 2007-09: Nature, Causes, and Reactions

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    This is a pre-copy-editing, author-produced PDF of an article accepted for publication in Journal of Interntional Economic Law following peer review. The definitive publisher-authenticated version [Journal of International Economic Law 13(3):531-550 2010] is available online at: http://jiel.oxfordjournals.org/content/13/3/531.ful

    Entanglement properties in the Inhomogeneous Tavis-Cummings model

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    In this work we study the properties of the atomic entanglement in the eigenstates spectrum of the inhomogeneous Tavis-Cummings Model. The inhomogeneity is present in the coupling among the atoms with quantum electromagnetic field. We calculate analytical expressions for the concurrence and we found that this exhibits a strong dependence on the inhomogeneity.Comment: 5 pages, 5 figure

    Effect of Temperature on Cu-doped p-ZnTe Thin-Films

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    In this paper we study the effect of temperature in 150 (±5) and 80 (±5) nm p-ZnTe thin- films immersed in 60 mgCu(NO3)2-3H2O/150 ml (H2O) for 1 minute, and heated at 200 and 300 °C for 30 minutes. Active layers were deposited by pulsed-laser deposition (PLD) at room temperature. Electrical parameters in un-doped films were around 108  ?109 ? and these values decreased to ~ 103 ? when the films were immersed in a Cu solution. The Cu-doped samples heated at 300 °C showed a completely homogeneous doping. X-ray diffraction (XRD) patterns showed the orthorhombic structure at 200 and 300 °C

    Brain motor system function after chronic, complete spinal cord injury.

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    Most therapies under development to restore motor function after spinal cord injury (SCI) assume intact brain motor functions. To examine this assumption, 12 patients with chronic, complete SCI and 12 controls underwent functional MRI during attempted, and during imagined, right foot movement, each at two force levels. In patients with SCI, many features of normal motor system function were preserved, however, several departures from normal were apparent: (i) volume of activation was generally much reduced, e.g. 4-8% of normal in primary sensorimotor cortex, in the setting of twice normal variance in signal change; (ii) abnormal activation patterns were present, e.g. increased pallido-thalamocortical loop activity during attempted movement and abnormal processing in primary sensorimotor cortex during imagined movement; and (iii) modulation of function with change in task or in force level did not conform to patterns seen in controls, e.g. in controls, attempted movement activated more than imagined movement did within left primary sensorimotor cortex and right dorsal cerebellum, while imagined movement activated more than attempted movement did in dorsolateral prefrontal cortex and right precentral gyrus. These modulations were absent in patients with SCI. Many features of brain motor system function during foot movement persist after chronic complete SCI. However, substantial derangements of brain activation, poor modulation of function with change in task demands and emergence of pathological brain events were present in patients. Because brain function is central to voluntary movement, interventions that aim to improve motor function after chronic SCI likely also need to attend to these abnormalities of brain function

    Acción de la simvastatina en la contracción de músculo liso de anillo traqueal inducida por estímulo químico y térmico

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    La contracción del músculo liso traqueal está vinculada a la entrada de Ca2+ al interior celular y la depleción de los depósitos intracelulares. Simvastatina, relaja la arteria basilar por disminución de la concentración intracelular de Ca2+. El objetivo del trabajo fue conocer el efecto de la simvastatina sobre la contracción de la musculatura lisa de tráquea aislada de rata, antes y después del estimulo con acetilcolina y agua fría. Se emplearon 8 ratas anestesiadas con tiobarbital sódico 60 mg/Kg i.p, para extraer la tráquea, se cortaron los anillos, se estimularon con acetilcolina 10-3 M y agua fría 18 °C con y sin simvastatina. Las mediciones se realizaron por ImageTool V. 3.0 (UTHSCSA). Las medias aritméticas del diámetro del músculo traqueal sin la incubación en simvastatina disminuyeron significativamente para el estímulo de acetilcolina y agua fría (p = 0,000 y p = 0,046) respectivamente; al agregar simvastatina se encuentra disminución del diámetro traqueal con el estímulo de agua fría la cual es estadísticamente significativa (p = 0,002) para la acetilcolina no es estadísticamente significativa (p = 0,084). Las medias de las velocidades de contracción de la tráquea al incubar acetilcolina/simvastatina y agua fría/simvastatina, no fueron significativos estadísticamente (p=0,082797 y p = 0,797599). Se concluye que hay disminución del diámetro traqueal al estimular la tráquea con agua fría y acetilcolina. Al agregarsimvastatina y agua fría, se produce el efecto constrictor y disminución del diámetro traqueal ya que se utilizan otras vías de entrada de calcio que no dependen del colesterol

    Unilateral submandibular gland aplasia with ipsilateral sublingual gland hypertrophy presenting as a neck mass

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    The congenital absence off the major salivary glands is a very infrequent disorder, in which several glands are usually involved at the same time. Sometimes this disorder can be associated with other developmental anomalies. The unilateral aplasia of the submandibular gland is an extremely rare finding with only 14 cases reported in the literature. Clinically, this kind of patients may complain of dryness of the mouth, difficulties in chewing and swallowing, severe periodontal disease or multiple caries, but usually they follow an asymptomatic course. Salivary gland aplasia can be diagnosed with a large variety off imaging techniques, which include computer tomography (CT), magnetic resonance imaging (MRR), ultrasonography (UUS), sialography, or scintigraphy. In this paper we report a case off a patient referred to our department with a long term and progressive growing neck mass, who has an unilateral submandibular gland aplasia associated to an ipsilateral hypertrophy off the sublingual gland. © Medicina Oral S. L

    Contribution to the knowledge of pathogenic fungi ofspiders in Argentina. Southernmost record in the worl

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    Fil: Manfrino, Romina G.. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Estudios Parasitológicos y de Vectores; ArgentinaFil: González, Alda. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Estudios Parasitológicos y de Vectores; ArgentinaFil: Barneche, Jorge. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Estudios Parasitológicos y de Vectores; ArgentinaFil: Tornesello Galván, Julieta. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Estudios Parasitológicos y de Vectores; ArgentinaFil: Hywell-Jones, Nigel. Bhutan Pharmaceuticals Private Limited. Thimphu; BhutanFil: López Lastra, Claudia Cristina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Estudios Parasitológicos y de Vectores; Argentin
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