482 research outputs found

    ETHNOBOTANICAL STUDY IN TOLEDO-PR DISTRICT: AN APPROACH ABOUT USED SPECIES VARIABILITY WITH THE SAME POPULAR NAME

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    The ethnopharmacological knowledge acquired throughout human evolution culminated in the development of high therapeutic relevance drugs. In ethnobotanical survey conducted in the city of Toledo in 2007, it was found that 79% of the population often use plants for medicinal purposes, mostly in the tea form, originated from own crops. They claimed that the consumption of these plants improved their health conditions. The plants mainly cited were: balm, chamomile and marcela. This study aimed to verify if the population habits related to medicinal plants have changed, also  proceed a literature review to find out if the most used plants have their biological activity scientifically proven and looking for  reports of homonymous to the most cited medicinal plants. There was small change in the species used by the population. In the literature, it was found out that different species are used with the same popular name, in practice, it was detected the use of two different species, Piper amalago L. (UNOP 7972) and Piper mikanianum (Kunth) (UNOP 7971), for  the medicinal plant commonly known as pariparoba, although none of them is recognized for the Brazilian Pharmacopoeia

    El concepto de lenguaje y los procesos de producción

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    En la relación producción/consumo los objetos cumplen diferentes funciones, prácticas, estéticas y funcionales que, en su conjunto, constituyen el lenguaje del producto que, además de cumplir una función pragmática es también portador de información. La Técnica es la reforma sistemática e intencional que el hombre impone a la Naturaleza para la satisfacción de sus necesidades y, que al incorporar la ciencia moderna deviene en Tecnología. El Lenguaje es la facultad humana de sustituir la realidad por uno o varios sistemas de signos. En la formación del diseñador industrial la enseñanza de la Morfología procura establecer las relaciones indisolubles entre la forma y la técnica

    The Effect of Visual Perceptual Load on Auditory Awareness in Autism Spectrum Disorder

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    Recent work on visual selective attention has shown that individuals with Autism Spectrum Disorder (ASD) demonstrate an increased perceptual capacity. The current study examined whether increasing visual perceptual load also has less of an effect on auditory awareness in children with ASD. Participants performed either a high- or low load version of a line discrimination task. On a critical trial, an unexpected, task-irrelevant auditory stimulus was played concurrently with the visual stimulus. In contrast to typically developing (TD) children, children with ASD demonstrated similar detection rates across perceptual load conditions, and reported greater awareness than TD children in the high perceptual load condition. These findings suggest an increased perceptual capacity in children with ASD that operates across sensory modalities

    Reciprocal inhibition between Pax7 and muscle regulatory factors modulates myogenic cell fate determination

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    Postnatal growth and regeneration of skeletal muscle requires a population of resident myogenic precursors named satellite cells. The transcription factor Pax7 is critical for satellite cell biogenesis and survival and has been also implicated in satellite cell self-renewal; however, the underlying molecular mechanisms remain unclear. Previously, we showed that Pax7 overexpression in adult primary myoblasts down-regulates MyoD and prevents myogenin induction, inhibiting myogenesis. We show that Pax7 prevents muscle differentiation independently of its transcriptional activity, affecting MyoD function. Conversely, myogenin directly affects Pax7 expression and may be critical for Pax7 down-regulation in differentiating cells. Our results provide evidence for a cross-inhibitory interaction between Pax7 and members of the muscle regulatory factor family. This could represent an additional mechanism for the control of satellite cell fate decisions resulting in proliferation, differentiation, and self-renewal, necessary for skeletal muscle maintenance and repair

    Diagnosis and control of Equine Infectious Anemia in a horse farm located in Buenos Aires province, Argentina

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    Inst.de VirologíaFil: Vissani, Aldana. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Virología; ArgentinaFil: Reynal O'Connor, J. Laboratorio Equino S.R.L.; ArgentinaFil: Olguin Perglione, Cecilia. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Virología; ArgentinaFil: Traverso, S. Laboratorio Equino S.R.L.; ArgentinaFil: Gutierrez, G. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Virología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Alvarez, Irene. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Virología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Barrandeguy, Maria Edith. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Virología; Argentina. Universidad del Salvador. Escuela de Veterinaria; Argentin

    Herschel Hi-GAL imaging of massive young stellar objects

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    We used Herschel Hi-GAL (Herschel infrared Galactic Plane survey) data to determine whether massive young stellar objects (MYSOs) are resolved at 70 μm and to study their envelope density distribution. Our analysis of three relatively isolated sources in the l = 30° and 59° Galactic fields show that the objects are partially resolved at 70 μm. The Herschel Hi-GAL survey data have a high scan velocity which makes unresolved and partially resolved sources appear elongated in the 70 μm images. We analysed the two scan directions separately and examine the intensity profile perpendicular to the scan direction. Spherically symmetric radiative transfer models with a power-law density distribution were used to study the circumstellar matter distribution. Single dish submm data were also included to study how different spatial information affects the fitted density distribution. The density distribution which best fits both the 70 μm intensity profile and spectral energy distribution has an average index of ∼0.5. This index is shallower than expected and is probably due to the dust emission from bipolar outflow cavity walls not accounted for in the spherical models. We conclude that 2D axisymmetric models and Herschel images at low scan speeds are needed to better constrain the matter distribution around MYSOs

    El proyecto, un universo a construir

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    El Curso de Nivelación de la Facultad de Arquitectura, Urbanismo y Diseño promueve la exploración, la recuperación de experiencias individuales y grupales, el intercambio y la discusión a través del trabajo en taller, y la elaboración de conceptos

    Synthesis and coordination chemistry of 2-(di-2-pyridylamino)pyrimidine; structural aspects of spin crossover in an Fe(II) complex

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    This paper was accepted on February 26 20122-(Di-2-pyridylamino)pyrimidine (L), a potentially ditopic tetradentate ligand, was synthesized from commercially available di-2-pyridylamine and 2-chloropyrimidine. Despite being capable of bridging two metal atoms with bidentate chelation of both metal centres, L prefers to chelate or bridge through the more basic pyridyl donors of the di-2-pyridylamine moiety. Mononuclear trans-[Fe(NCS)2(L)2] and [Cu(L)2(H2O)](BF4)2•H2O complexes, and a discrete [Ag2(L)4](PF6)2 metallomacrocycle were isolated and structurally characterized by X-ray crystallography. A mononuclear palladium complex [PdCl2(L)]•(solvate), where solvate = ½H2O or CH2Cl2, was also readily obtained in 71% yield. One example of the ligand acting as a bis(bidentate) bridging ligand was observed in a dinuclear [(PdCl2)2(L)]•¾H2O complex that was obtained only in very low yield (ca. 3%) from the reaction that produced [PdCl2(L)]•½H2O. trans-[Fe(NCS)2(L)2] undergoes a temperature dependent HS-LS (HS = high spin; LS = low spin) crossover at ca. 205 K that was 2 observed by X-ray crystallography and magnetic measurements and attempts were made to understand the structural basis of this process. Despite efforts to isolate examples of L bridging two iron(II) centres, only the mononuclear trans-[Fe(NCS)2(L)2] species could be obtained.Rachel S. Crees, Boujemma Moubaraki, Keith S. Murray, and Christopher J. Sumb
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