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Search Results: 1 - 10 of 178716 matches for " Rosa E. Carrasquillo "
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Rese a de "Women, Creole Identity, and Intellectual Life in Early Twentieth-Century Puerto Rico" de Magali Roy-Féquière
Rosa E. Carrasquillo
Centro Journal , 2006,
Online measurements of the emissions of intermediate-volatility and semi-volatile organic compounds from aircraft
E. S. Cross,J. F. Hunter,A. J. Carrasquillo,J. P. Franklin
Atmospheric Chemistry and Physics Discussions , 2013, DOI: 10.5194/acpd-13-8065-2013
Abstract: A detailed understanding of the climate and air quality impacts of aviation requires detailed measurements of the emissions of intermediate-volatility and semi-volatile organic compounds (I/SVOCs) from aircraft. Currently both the amount and chemical composition of aircraft I/SVOC emissions remain poorly characterized. Here we characterize I/SVOC emissions from aircraft, using a novel instrument for the online, quantitative measurement of the mass loading and composition of low-volatility organic vapors. Emissions from the NASA DC8 aircraft were sampled on the ground, 143 m downwind of the engines and characterized as a function of engine power from ground idle (~4% maximum rated thrust) through 85% power. Results show that I/SVOC emissions are highest during engine-idle operating conditions, with decreasing but non-zero I/SVOC emissions at higher engine powers. Comparison of I/SVOC emissions with total hydrocarbon (THC) measurements, VOC measurements, and an established emissions profile indicates that I/SVOCs comprise 10–20% of the total organic gas phase emissions at idle, and an increasing fraction of the total gas phase organic emissions at higher powers. Positive matrix factorization of online mass spectra is used to identify three distinct types of I/SVOC emissions: aliphatic, aromatic and oxygenated. The volatility and chemical composition of the emissions suggest that unburned fuel is the dominant source of I/SVOCs at idle, while pyrolysis products make up an increasing fraction of the I/SVOCs at higher powers. Oxygenated I/SVOC emissions were detected at lower engine powers (≤30%) and may be linked to cracked, partially oxidized or unburned fuel components.
De la decisión a la acción: estudio sobre el imperium en Tomás de Aquino
Francisco J. Romero Carrasquillo
Diánoia , 2012,
Construction and validation of Experiences Questionnaire on Violence in Couple and Family Relations in University Students [Desarrollo del Cuestionario de Experiencias de Violencia en las Relaciones de Pareja y Familia en Estudiantes Universitarios]
Angel A. Villafa?e Santiago,Maria Isabel Jimenez Chafey,Damaris De Jesus Carrasquillo,Robinson A. Vázquez Ramos
Universitas Psychologica , 2012,
Abstract: This study describes the process of developing the Experiences of Violence in Couple and Family Relationships in University Students Questionnaire, its psychometric properties and the results of the pilot study. The research design used for this study was a nonexperimental, transversal co relational design. The nonrandomized sample consisted of 267 students. The final version of the questionnaire consisted of 41 items and four sub-scales which measured experiences with violence in a relationship as an Aggressor and as a Victim, Observed between the Parents and in the Parent-child relationship as a victim. The total scale and the subscales obtained adequate reliability indexes. On average, the sample reported ten experiences with violence in different contexts. The results of this study contribute data on the prevalence of violence in college students’ romantic and family relationships which in turn, provide valuable information for planning prevention and early intervention efforts with this population.
An Alternative Manifold for Cosmology Using Seifert Fibered and Hyperbolic Spaces  [PDF]
Maria E. Mejía, Reinaldo R. Rosa
Applied Mathematics (AM) , 2014, DOI: 10.4236/am.2014.56096

We propose a model with 3-dimensional spatial sections, constructed from hyperbolic cusp space glued to Seifert manifolds which are in this case homology spheres. The topological part of this research is based on Thurston’s conjecture which states that any 3-dimensional manifold has a canonical decomposition into parts, each of which has a particular geometric structure. In our case, each part is either a Seifert fibered or a cusp hyperbolic space. In our construction we remove tubular neighbourhoods of singular orbits in areas of Seifert fibered manifolds using a splice operation and replace each with a cusp hyperbolic space. We thus achieve elimination of all singularities, which appear in the standard-like cosmological models, replacing them by “a torus to infinity”. From this construction, we propose an alternative manifold for cosmology with finite volume and without Friedmann-like singularities. This manifold was used for calculating coupling constants. Obtaining in this way a theoretical explanation for fundamental forces is at least in the sense of the hierarchy.

Hemispheric lateralization of a molecular signal for pain modulation in the amygdala
Yarimar Carrasquillo, Robert W Gereau IV
Molecular Pain , 2008, DOI: 10.1186/1744-8069-4-24
Abstract: The amygdala is a forebrain multinuclear structure with a well-established role in emotional processing [1,2]. Increasing evidence supports the role of the central nucleus of the amygdala (CeA) as a neural modulator of pain perception [3]. Previous work from our laboratory has identified the extracellular signal-regulated kinases (ERKs) as key molecules for the modulation of pain by the CeA in mice [4]. Biochemical experiments showed that ERK is activated in the CeA during persistent inflammation. ERK activation in the CeA was shown to be necessary for inflammation-induced peripheral hypersensitivity because acute pharmacological blockade of ERK activation in this amygdala nucleus reduced inflammation-induced peripheral tactile hypersensitivity. Furthermore, ERK activation in the amygdala was shown to be not only necessary for inflammation-induced peripheral hypersensitivity but also sufficient to induce peripheral tactile hypersensitivity in the absence of tissue injury.Interestingly, the biochemical data from our previous study showed that inflammation-induced ERK activation occurs in the right CeA independent of the side of peripheral inflammation (right or left hindpaw) [4]. These results suggest that modulation of pain by ERK activation in the CeA might be functionally lateralized to the right hemisphere. We tested this hypothesis in the present study by comparing the effects of acute blockade of ERK activation in the right versus the left amygdala when inflammation was induced in the right or the left hind-paw.To induce peripheral inflammation in mice, a 5% formalin solution was injected subcutaneously into the right or the left hind-paw as previously described [4]. Two hours after formalin injection into the hind-paw, the MEK inhibitor U0126 (1.5 nmoles), the inactive structural analog U0124 (1.5 nmoles) or vehicle (50% DMSO/Saline) were infused into the right or the left CeA. Formalin-induced mechanical sensitivity was measured 1 hr after intra-amygdala drug
Planktonic ciliates Choreotrichida and Strombidiida from the inner zone of Bahía Blanca Estuary, Argentina
Pettigrosso, Rosa E.;
Iheringia. Série Zoologia , 2003, DOI: 10.1590/S0073-47212003000200001
Abstract: seven species of aloricate planktonic ciliates were identified using protargol staining. choreotrichida: strombidinopsidae, strombidinopsis elongata song & bradbury, 1998; strobiliidae, strobilidium epacrum lynn & montagnes, 1988 and strombidiida: strombidiidae, strombidium capitatum (leegaard, 1915) kahl, 1932; s. emergens (leegaard, 1915) kahl, 1932; s. acutum leegaard, 1915; s. dalum lynn, montagnes & small, 1988 and cyrtostrombidium longisomum lynn & gilron, 1993; they were collected from the inner zone of the bahía blanca estuary in the southern region of the buenos aires province, argentina. these species represent new records to south america (argentina).
Caracterización de las Organizaciones No Gubernamentales: El caso de los municipios Maracaibo y San Francisco
Ortiz,Rosa E;
Revista Venezolana de Gerencia , 2005,
Abstract: this study of non-governmental organizations was directed towards a characterization of the diversity of groups and associations grouped under the generic term ngo that exist in the municipalities of maracaibo and san francisco, which are the more relevant populations in the political, economic, social and cultural life of zulia state, venezuela. a descriptive-exploratory study was proposed. the results indicated that a) there is sustained growth in the ngos in these municipalities: b) the sectors with greater ngo concentration are health, education, sports, recreation, art and culture, c) the institutions that promote more organizations are the church and the state, which in the second case is an attempt to reduce the functions which correspond to the state, as well as to minimize labour costs and conflicts, d) there is ambivalence in the orientation of the functioning of ngos. some ngos implement semi-mercantile activities in which they legitimize strategies within the neo-liberal economic model, while other groups strengthen the democratization of public services. the conclusion is that the growth and characterization of ngos in these municipalities was related to the application of neo-liberal public policy during the 1990s and the beginning of the decade 2000.
Planktonic ciliates Choreotrichida and Strombidiida from the inner zone of Bahía Blanca Estuary, Argentina
Pettigrosso Rosa E.
Iheringia. Série Zoologia , 2003,
Abstract: Seven species of aloricate planktonic ciliates were identified using protargol staining. Choreotrichida: Strombidinopsidae, Strombidinopsis elongata Song & Bradbury, 1998; Strobiliidae, Strobilidium epacrum Lynn & Montagnes, 1988 and Strombidiida: Strombidiidae, Strombidium capitatum (Leegaard, 1915) Kahl, 1932; S. emergens (Leegaard, 1915) Kahl, 1932; S. acutum Leegaard, 1915; S. dalum Lynn, Montagnes & Small, 1988 and Cyrtostrombidium longisomum Lynn & Gilron, 1993; they were collected from the inner zone of the Bahía Blanca estuary in the southern region of the Buenos Aires province, Argentina. These species represent new records to South America (Argentina).
The effects of orthographic neighborhood in reading and laboratory word identification tasks: A review
Perea M.,Rosa E.
Psicológica , 2000,
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