1,719 research outputs found
Emberiza calandra
No full textRecopilación de observaciones de ecología general, anidamiento y cría del triguero (Miliaria calandra, nombrada por el autor como Emberiza calandra) realizadas durante varias salidas a diferentes enclaves de la provincia de Valladolid, Magaz de Pisuerga (Palencia), Toro (Zamora) y Burgos, entre el 7 de julio de 1947 y el 2 de julio de 1948.Compilation of nesting, breeding and general ecology observations of the Corn Bunting (Miliaria calandra, refered as Emberiza calandra by the author) carried out during some trips to different areas of the province of Valladolid, Magaz de Pisuerga (Palencia), Toro (Zamora) and Burgos, between the 7th of July of 1947 and the 2nd of July of 1948
Geografie di confine. Invisibilità e frammentazione delle identità e dei luoghi negli Stati Uniti del 2020
No full textThe anomia’s concept created by Merton (1949), offers us an analysis of the behavioral models that individuals adopt in order to adapt themselves or even to refuse the society’s cultural values. On this basis, some categories of subjects (the identity) that have adopted deviant behavioral models have been taken into consideration. On the other hand, this has finally lead us onto an analysis of the places that host these types of behavior. Taking on consideration further sociological theories that explain the relationship between identity and territory (Raffestin, 1981; Remotti, 1996; Isenburg, 2000; Sayad, 2002; Boni, 2005; Calandra, 2007; Elliott e Lemert, 2007; Bauman, 2009; D’Alessandro, 2009; D’Ascenzo, 2014; Salisci, 2018), a research is been carried out on identity and it’s invisible and split areas; people and spaces socially forgotten, isolated from the official’s United States society and geography. Identity and it’s invisible and split areas, is first defined and then, classified using a taxonomy. Many are the objectives of this means: reaffirm how actual the Mertonian’s Theory still is; identify the endogenous and exogenous factors of the fenomenon; certify a misrepresented perception of the american’s dream idea
Introducción a la Endocrinología
No full textLos tejidos especializados en el organismo funcionan de una manera integrada debido a la existencia de tres mecanismos de control interconectados, que son los siguientes: 1) el sistema nervioso (SN), el cual transmite las señales electroquímicas (neurotransmisores, neurohormonas) entre el cerebro y los tejidos periféricos, o bien entre los propios tejidos (circuito reflejo); 2) el sistema endocrino (SE), el cual libera mediadores químicos (hormonas) a la circulación, y 3) el sistema inmune (SI), el cual por medio de moléculas especializadas (citocinas, factores de crecimiento, FC) interactúa con el sistema endocrino de manera recíproca. Al respecto, se ha demostrado que las células inmunorreactivas, entre otras, secretan prolactina, β-endorfinas, etcétera.Fil: Calandra, Ricardo Saul. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Biología y Medicina Experimental. Fundación de Instituto de Biología y Medicina Experimental. Instituto de Biología y Medicina Experimental; Argentin
Esperienze di ricerca-azione partecipativa in situazione di post-emergenza: dall’Aquila dopo il sisma del 2009 ai terremoti del 2016-2017 in Centro Italia
No full textHallazgos arqueológicos en la Quebrada de Zapagua : (Departamento de Humahuaca, provincia de Jujuy)
No full textFil: Cigliano, Eduardo M..
Universidad Nacional de La PlataFil: Calandra, Horacio A..
Universidad Nacional de La Plat
From antiferromagnetism to d-wave superconductivity in the two-dimensional t-J model
No full textWe have found that the two dimensional t-J model, for the physical parameter range J/t= 0.4 reproduces the main experimental qualitative features of high-ir, copper oxide superconductors: d-wave superconducting correlations are strongly enhanced upon small doping and clear evidence of off-diagonal long-range order is found at the optimal doping delta approximate to 0.15. On the other hand, antiferromagnetic long-range order, clearly present at zero hole doping, is suppressed at small hole density with clear absence of antiferromagnetism at delta>-0.1
Evidence for a GABAergic system in rodent and human testis: Local GABA production and GABA receptors
No full textThe major neurotransmitter of the central nervous system, gamma-aminobutyric acid (GABA), exerts its actions through GABA(A), GABA(B) and GABA(C) receptors. GABA and GABA receptors are, however, also present in several non-neural tissues, including the endocrine organs pituitary, pancreas and testis. In the case of the rat testis, GABA appears to be linked to the regulation of steroid synthesis by Leydig cells via GABA(A) receptors, but neither testicular sources of GABA, nor the precise nature of testicular GABA receptors are fully known. We examined these points in rat, mouse, hamster and human testicular samples. RT-PCR followed by sequencing showed that the GABA-synthesizing enzymes glutamate decarboxylase (GAD) 65 and/or GAD67, as well as the vesicular GABA transporter vesicular inhibitory amino acid transporter (VIAAT/VGAT) are expressed. Testicular GAD in the rat was shown to be functionally active by using a GAD assay, and Western blot analysis confirmed the presence of GAD65 and GAD67. Interstitial cells, most of which are Leydig cells according to their location and morphological characteristics, showed positive immunoreaction for GAD and VIAAT/VGAT proteins. In addition, several GABA(A) receptor subunits (alpha1-3, beta1-3, gamma1-3), as well as GABAB receptor subunits R1 and R2, were detected by RT-PCR. Western blot analysis confirmed the results for GABA(A) receptor subunits beta2/3 in the rat, and immunohistochemistry identified interstitial Leydig cells to possess immunoreactive GABA(A) receptor subunits beta2/3 and alpha1. The presence of GABA(A) receptor subunit alpha1 mRNA in interstitial cells of the rat testis was further shown after laser microdissection followed by RT-PCR analysis. In summary, these results describe molecular details of the components of an intratesticular GABAergic system expressed in the endocrine compartment of rodent and human testes. While the physiological significance of this peripheral neuroendocrine system conserved throughout species remains to be elucidated, its mere presence in humans suggests the possibility that clinically used drugs might be able to interfere with testicular function. Copyright (C) 2003 S. Karger AG, Basel
"Las palabras para decirlo". Le rappresentazioni della violenza sessuale nel Cile di Pinochet
No full textUn volume collettaneo che raccoglie i risulati di una Ricerca di Interesse Nazionale sul fenomeno della violenza sessuale nell'America Latina contemporane
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