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Search Results: 1 - 10 of 9314 matches for " Daniela Poblete Godoy "
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Rese a de "Mundo real, mundo imaginario social. Teoría y práctica de sociología profunda" de Manuel Antonio Baeza
Daniela Poblete Godoy
Revista de Investigaciones Políticas y Sociológicas (RIPS) , 2012,
Abstract:
ATP Induces NO Production in Hippocampal Neurons by P2X7 Receptor Activation Independent of Glutamate Signaling
Juan Francisco Codocedo, Juan Alejandro Godoy, Maria Ines Poblete, Nibaldo C. Inestrosa, Juan Pablo Huidobro-Toro
PLOS ONE , 2013, DOI: 10.1371/journal.pone.0057626
Abstract: To assess the putative role of adenosine triphosphate (ATP) upon nitric oxide (NO) production in the hippocampus, we used as a model both rat hippocampal slices and isolated hippocampal neurons in culture, lacking glial cells. In hippocampal slices, additions of exogenous ATP or 2′(3′)-O-(4-Benzoylbenzoyl) ATP (Bz-ATP) elicited concentration-dependent NO production, which increased linearly within the first 15 min and plateaued thereafter; agonist EC50 values were 50 and 15 μM, respectively. The NO increase evoked by ATP was antagonized in a concentration-dependent manner by Coomassie brilliant blue G (BBG) or by Nω-propyl-L-arginine, suggesting the involvement of P2X7Rs and neuronal NOS, respectively. The ATP induced NO production was independent of N-methyl-D-aspartic acid (NMDA) receptor activity as effects were not alleviated by DL-2-Amino-5-phosphonopentanoic acid (APV), but antagonized by BBG. In sum, exogenous ATP elicited NO production in hippocampal neurons independently of NMDA receptor activity.
Barren Miocene granitoids in the Central Andean metallogenic belt, Chile: Geochemistry and Nd-Hf and U-Pb isotope systematics
Deckart,Katja; Godoy,Estanislao; Bertens,Alfredo; Jerez,Daniela; Saeed,Ayesha;
Andean geology , 2010,
Abstract: four middle-to-late miocene barren plutonic complexes that occur between the giant porphyry copper deposits of the central chilean andes were selected for u-pb la-icpms geochronology and hf-isotope systematics on single zircon grains. major and trace elements and sr-nd-hf isotope whole rock geochemical studies were under-taken to compare with slightly younger or coeval barren and fertile intrusive rocks between 32° and 34°s. the studied granitoids yield resolvable crystallization ages of 11.3±0.1 ma (cerro mesón alto massif), 10.3±0.2 ma (la gloria pluton), 14.9±0.2 ma/14.9±0.1 ma (yerba loca stock) and 11.2±0.1 ma/14.7±0.1 ma (san francisco batholith). major and trace elements discard an adakitic signature as suggested for coeval porphyric intrusions at 32°s, slightly younger mineralized porphyries at río blanco-los bronces deposit and other cenozoic adakites. volcanic host rocks are less fractionated than the intrusive rock units. the same observation can be made for the unmineralized northern plutons compared to the southern ones. initial sr-nd isotope data show insignificant variation (0.703761-0.704118 and 0.512758-0.512882), plotting in the mantle array. trace element enrichment can be explained by addition of subducted-slab fluids and/or terrigenous sediments to the mantle wedge prior to and/or slight crustal input during magma ascent. zircon grains separated from these barren intrusives share a similar initial εhfi-data variation for the younger age group (10-12 ma; 7.04-9.54) and show a more scattered range for the older one (14-15 ma; 8.50-15.34); both sets plot between the dm and cltur evolution lines. there is evidence that magma evolution was slightly distinct through time from older to younger barren magmatism, compared to a few fertile porphyritic rocks from río blanco-los bronces porphyry copper deposit. it is suggested that chronological inconsistencies within these complexes might be related to differential shortening across the ne-sw-trending yeso
Motivos de licen?as médicas em um hospital de urgência-emergência
Alves, Marília;Godoy, Solange Cervinho Bicalho;Santana, Daniela Moreira;
Revista Brasileira de Enfermagem , 2006, DOI: 10.1590/S0034-71672006000200014
Abstract: this is a descriptive study about the illness-absenteism process among workers in a large emergency hospital in the city of belo horizonte, in 2002. the illness- absenteeism process was analyzed considering frequency, reason (dic10), duration and risk, according to the different professions. the professional categories were: support, administration, nursing and medicine. the rate illness-absenteísm in this hospital was 2,06. the possibility for leave of absence for each profession was 4,7. this rate was influenced by with rate 8,48. found in the category missing. the main reason for leave of absences was related to orthopedics diseases (14,68%), other health problems (13,59%) and respiratory diseases (13,32%).
Peralkaline rocks in the Late Cretaceous Del Salto Pluton, Eastern Patagonian Andes, Aisén, Chile (47°35'S)
Welkner,Daniela; Godoy,Estanislao; Bernhardt,Heinz-J.;
Revista geológica de Chile , 2002, DOI: 10.4067/S0716-02082002000100001
Abstract: abstract the late cretaceous del salto pluton is one of the four late jurassic to late miocene intrusives that are recognized ca. 60 km inboard from the eastern limit of the patagonian batholith, close to the chilean-argentinian border. the pluton is a fluorite-bearing biotite syenogranite, except for part of its northeastern sector, where an alkali feldspar granite contains a typical peralkaline assemblage composed of relict augite and aegirine, together with arfvedsonite, ferrorichterite, astrophyllite, pyrochlore and zektzerite. most of these minerals had not been recognized previously, making this the first example of an alkaline intrusion with a local peralkaline facies in this southern part of the continent. these mineral assemblages are unusual for a subduction-related margin in which subalkalic magmatism is characteristic. judging from its trace element composition and rare earth element patterns, the pluton probably reflects the end product of extreme fractionation in a within-plate to post-collisional environment. the lack of clear-cut contacts between the rock that contains the peralkaline assemblage and the biotite syenogranite argues in favor of podiform bodies in which f-rich solutions have induced alkalic metasomatism
Barren Miocene granitoids in the Central Andean metallogenic belt, Chile: Geochemistry and Nd-Hf and U-Pb isotope systematics Granitoides estériles del Mioceno en la franja metalogénica de los Andes Centrales, Chile: geoquímica e isotopía de Nd-Hf y U-Pb
Katja Deckart,Estanislao Godoy,Alfredo Bertens,Daniela Jerez
Andean Geology , 2010,
Abstract: Four Middle-to-Late Miocene barren plutonic complexes that occur between the giant porphyry copper deposits of the central Chilean Andes were selected for U-Pb LA-ICPMS geochronology and Hf-isotope systematics on single zircon grains. Major and trace elements and Sr-Nd-Hf isotope whole rock geochemical studies were under-taken to compare with slightly younger or coeval barren and fertile intrusive rocks between 32° and 34°S. The studied granitoids yield resolvable crystallization ages of 11.3±0.1 Ma (Cerro Mesón Alto massif), 10.3±0.2 Ma (La Gloria pluton), 14.9±0.2 Ma/14.9±0.1 Ma (Yerba Loca stock) and 11.2±0.1 Ma/14.7±0.1 Ma (San Francisco Batholith). Major and trace elements discard an adakitic signature as suggested for coeval porphyric intrusions at 32°S, slightly younger mineralized porphyries at Río Blanco-Los Bronces deposit and other Cenozoic adakites. Volcanic host rocks are less fractionated than the intrusive rock units. The same observation can be made for the unmineralized northern plutons compared to the southern ones. Initial Sr-Nd isotope data show insignificant variation (0.703761-0.704118 and 0.512758-0.512882), plotting in the mantle array. Trace element enrichment can be explained by addition of subducted-slab fluids and/or terrigenous sediments to the mantle wedge prior to and/or slight crustal input during magma ascent. Zircon grains separated from these barren intrusives share a similar initial εHf i-data variation for the younger age group (10-12 Ma; 7.04-9.54) and show a more scattered range for the older one (14-15 Ma; 8.50-15.34); both sets plot between the DM and CLTUR evolution lines. There is evidence that magma evolution was slightly distinct through time from older to younger barren magmatism, compared to a few fertile porphyritic rocks from Río Blanco-Los Bronces porphyry copper deposit. It is suggested that chronological inconsistencies within these complexes might be related to differential shortening across the NE-SW-trending Yeso Valley transfer fault, assumed as coeval, which also explains the local lack of easterly magmatic are front migration. Cuatro complejos plutónicos del Mioceno Temprano a Medio que se encuentran ubicados entre los depósitos de pórfidos gigantes de cobre de los Andes chileno centrales fueron seleccionados para un estudio de geocronología U-Pb por LA-ICPMS y de isótopos de Hf en granos individuales de circón. Estudios geoquímicos de elementos mayores y trazas y los isótopos de Sr-Nd-Hf en roca permiten compararlos con rocas intrusivas ligeramente más jóvenes o coetáneas estériles y fértiles ent
Peralkaline rocks in the Late Cretaceous Del Salto Pluton, Eastern Patagonian Andes, Aisén, Chile (47°35'S)
Daniela Welkner,Estanislao Godoy,Heinz-J. Bernhardt
Revista geológica de Chile , 2002,
Abstract: ABSTRACT The Late Cretaceous Del Salto Pluton is one of the four Late Jurassic to Late Miocene intrusives that are recognized ca. 60 km inboard from the eastern limit of the Patagonian Batholith, close to the Chilean-Argentinian border. The pluton is a fluorite-bearing biotite syenogranite, except for part of its northeastern sector, where an alkali feldspar granite contains a typical peralkaline assemblage composed of relict augite and aegirine, together with arfvedsonite, ferrorichterite, astrophyllite, pyrochlore and zektzerite. Most of these minerals had not been recognized previously, making this the first example of an alkaline intrusion with a local peralkaline facies in this southern part of the continent. These mineral assemblages are unusual for a subduction-related margin in which subalkalic magmatism is characteristic. Judging from its trace element composition and rare earth element patterns, the pluton probably reflects the end product of extreme fractionation in a within-plate to post-collisional environment. The lack of clear-cut contacts between the rock that contains the peralkaline assemblage and the biotite syenogranite argues in favor of podiform bodies in which F-rich solutions have induced alkalic metasomatism RESUMEN Rocas peralcalinas en el Plutón Del Salto del Cretácico Superior, Andes patagónicos orientales, Aisén, Chile (47°35'S). El Plutón Del Salto, de edad Cretácica tardía, aflora en las inmediaciones del límite chileno-argentino como uno de cuatro intrusivos del Jurásico Superior al Mioceno Superior reconocidos aproximadamente a 60 km del borde oriental del Batolito Patagónico. El intrusivo es petrográficamente hetereogéneo, compuesto principalmente por un sienogranito de biotita y fluorita. En su extremo nororiental se ha reconocido un granito de feldespato alcalino con augita y aegirina relicta, arfvedsonita, ferrorichterita, astrofilita, pirocloro y zektzerita. La mayoría de estos minerales no habían sido descritos con anterioridad en esta zona, haciendo de éste el primer caso de una intrusión alcalina con una facies peralcalina local. Esta asociación mineralógica es inusual para un márgen de subducción activo, donde un magmatismo subalcalino es característico. Considerando la composición de sus elementos traza y el patrón de tierras raras, el plutón podría reflejar el producto final de un fraccionamiento extremo en un ambiente de intraplaca a postcolisional. La ausencia de contactos definidos entre la asociación peralcalina y el sienogranito de biotita, argumenta a favor de cuerpos podiformes en los cuales soluciones
The intracerebral haemorrhage associated to oral anticoagulant therapy: the practical management of urgent reversal therapy
Luca Masotti,Mario Di Napoli,Daniel Godoy,Daniela Rafanelli
Reviews in Health Care , 2011, DOI: 10.7175/rhc.19219-28
Abstract: Intracerebral haemorrhage (ICH) represents the most feared complication of therapy with vitamin K antagonists (VKA), so-called oral anticoagulant therapy (OAT). This is a real emergency in clinical practice, being burdened by high mortality, morbidity and residual functional disability. In recent years, there have been widespread indications for the correct management of VKA associated ICH. The urgent OAT reversal represents the cornerstone of VKA associated ICH therapy. The knowledge of these guidelines is of fundamental importance in clinical practice. The urgent OAT reversal could stop the hematoma enlargement which is considered one of the main risk factor of poor outcome in this clinical setting. The aim of urgent OAT reversal is bringing the INR (International Normalized Ratio) to values ≤ 1.4. It is possible by using prothrombin complex concentrate (PCC), fresh frozen plasma (FFP), recombinant activated factor VII (raFVII) together with vitamin K1 intravenous infusion. In this article the Authors review the practical management of urgent OAT reversal in patients suffering for VKA related ICH.
Multi-site PM2.5 and PM2.5-10 aerosol source apportionment in Rio de Janeiro, Brazil
Soluri, Daniela S.;Godoy, Maria Luiza D. P.;Godoy, José Marcus;Rold?o, Luiz Alfredo;
Journal of the Brazilian Chemical Society , 2007, DOI: 10.1590/S0103-50532007000400025
Abstract: aerosol sampling was performed at ten sites distributed in different location of rio de janeiro city, from september/2003 to sepetember/2004, on a weekly basis with 24 h sampling time interval. pm2.5 and pm2.5-10 aerosol particles were sampled using stacked filter units (sfu). aerosol mass, black carbon, water soluble ions concentration as well as total aluminum, calcium, iron, magnesium, potassium, sodium and titanium concentration were determined. mean annual pm10 mass concentration ranged from 18 to 38 μg m-3, without violation of the brazilian air quality standards. for fine and coarse modes, between 70 and 90% of the measured mass was apportioned to relatively few sources, soil dust accounts for 37-63% of the coarse mode mass. on the other hand, black carbon and secondary aerosol, related to anthropogenic sources as fuel burning, represents very high proportions (45-58%) of the pm2.5 mass.
La burocratización de las políticas sociales: La administración de programas alimentarios en la Argentina rural
Poblete, Lorena;
Perfiles latinoamericanos , 2008,
Abstract: between 1995 and 1999 the reform of the wine production sector caused significant social changes in mendoza (argentina). the restructuring of the paternalistic model which had been the core of the old system of productivity made the rural workers to experience a complete lack of references. they went from a well-known and controlled poverty to a system of social instability in which even the basic resources were missing. the state, unable to satisfy the claims made by the rural workers, created a bureaucratic mechanism for the allocation of social aid.
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