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Search Results: 1 - 10 of 223739 matches for " Luis Adrián Diaz "
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Comparison of Argentinean Saint Louis Encephalitis Virus Non-Epidemic and Epidemic Strain Infections in an Avian Model
Luis Adrián Diaz ,Nicole M. Nemeth,Richard A. Bowen,Walter R. Almiron,Marta S. Contigiani
PLOS Neglected Tropical Diseases , 2011, DOI: 10.1371/journal.pntd.0001177
Abstract: St. Louis encephalitis virus (SLEV, Flavivirus, Flaviviridae) is an emerging mosquito-borne pathogen in South America, with human SLEV encephalitis cases reported in Argentina and Brazil. Genotype III strains of SLEV were isolated from Culex quinquefasciatus mosquitoes in Cordoba, Argentina in 2005, during the largest SLEV outbreak ever reported in South America. The present study tested the hypothesis that the recent, epidemic SLEV strain exhibits greater virulence in birds as compared with a non-epidemic genotype III strain isolated from mosquitoes in Santa Fe Province 27 years earlier. The observed differences in infection parameters between adult House sparrows (Passer domesticus) that were needle-inoculated with either the epidemic or historic SLEV strain were not statistically significant. However, only the House sparrows that were infected with the epidemic strain achieved infectious-level viremia titers sufficient to infect Cx. spp. mosquitoes vectors. Furthermore, the vertebrate reservoir competence index values indicated an approximately 3-fold increase in amplification potential of House sparrows infected with the epidemic strain when pre-existing flavivirus-reactive antibodies were present, suggesting the possibility that antibody-dependent enhancement may increase the risk of avian-amplified transmission of SLEV in South America.
UNA virus: first report of human infection in Argentina
Diaz, Luis Adrián;Spinsanti, Lorena Ivana;Almiron, Walter Ricardo;Contigiani, Marta Silvia;
Revista do Instituto de Medicina Tropical de S?o Paulo , 2003, DOI: 10.1590/S0036-46652003000200012
Abstract: una virus (unav), togaviridae family, is widely distributed in south america, where infections have been detected in mosquitoes and vertebrate hosts (humans, birds and horses). we analyzed human sera from córdoba inhabitants aged 44 to 89 years and using a neutralization test, we found a prevalence of unav antibodies of 3.8% (3/79). the low titers detected suggest past infections probably acquired in rural areas of the province of córdoba (central argentina). none sera were found positive for mayv neutralizing antibodies. this is the first report of human infections by unav in argentina.
UNA virus: first report of human infection in Argentina
Diaz Luis Adrián,Spinsanti Lorena Ivana,Almiron Walter Ricardo,Contigiani Marta Silvia
Revista do Instituto de Medicina Tropical de S?o Paulo , 2003,
Abstract: Una virus (UNAV), Togaviridae family, is widely distributed in South America, where infections have been detected in mosquitoes and vertebrate hosts (humans, birds and horses). We analyzed human sera from Córdoba inhabitants aged 44 to 89 years and using a neutralization test, we found a prevalence of UNAV antibodies of 3.8% (3/79). The low titers detected suggest past infections probably acquired in rural areas of the Province of Córdoba (central Argentina). None sera were found positive for MAYV neutralizing antibodies. This is the first report of human infections by UNAV in Argentina.
Dominación y corporalidad: técnicas de gobierno en la Conquista Americana
Mora Rodríguez,Luis Adrián;
Tabula Rasa , 2010,
Abstract: this article explores the discourses and practices of power that are developed during the spanish conquest of america, through texts written at that time. these texts allow us to understand how "understanding" of "american alterity" is informed and developed as just another way of domination. we aim to look at this epistemological construction critically, by relying on the concept of "government" developed michel foucault. thus, we intend to show how domination and government techniques identified by the french thinker have a historical origin in the conquest of america.
DOMINACIóN Y CORPORALIDAD: TéCNICAS DE GOBIERNO EN LA CONQUISTA AMERICANA
Luis Adrián Mora Rodríguez
Tabula Rasa , 2010,
Abstract: El presente artículo explora los discursos y prácticas de poder que se desarrollan durante la conquista de América a partir de los textos de la época. éstos permiten entender la forma en que el conocimiento de la alteridad americana se construye y se desarrolla como una forma más de la dominación. Nuestro objetivo es criticar esta construcción epistemológica se alando sus carencias y presupuestos, tomando como punto de partida la noción de gobierno que analizan los cursos de Michel Foucault. De esta manera buscamos mostrar cómo las técnicas de dominación y gobierno que el pensador francés identifica tienen su origen histórico en la conquista de América.
Evaluation of the Physicochemical Behavior of Waste Water Treatment Polyelectrolytes with Metal Ions  [PDF]
Eduardo A. López Maldonado, Mercedes T. Oropeza Guzmán, Georgina Pina-Luis, Adrián Ochoa-Terán
Journal of Environmental Protection (JEP) , 2013, DOI: 10.4236/jep.2013.43032
Abstract: In this paper is describing the physicochemical behavior of polyelectrolytes (PEs) used in waste water treatment with mono-, di- and trivalent metal ions as K+, Mg2+, Zn2+, Fe3+, Sn2+, Cd2+, Pb2+, Cu2+, Ni2+, Al3+ and Cr3+. A coagulant polyelectrolyte Poly(vinyl sulfate) potassium salt (PVSK), and a commercial available Flocculant Trident 2756, were used as models for the study. The colloidal titration UV-Vis spectroscopy technique was successfully implemented in order to evaluate the complexation of PEs with Toluidine Blue O (OTB) and the ability of different metal ions to displace the OTB from the PE-OTB complex and form the PE-metal ion complex. From the experiments was concluded that PVSK has a high affinity for Al3+ and Mg2+ while the
DISE O ASISTIDO POR COMPUTADOR DEL SISTEMA DE VENTILACIóN DE LA CáMARA CALORIMéTRICA PRINCIPAL DE ENSAYOS PARA APLICACIONES HVAC/R
NéSTOR FONSECA DIAZ,LUIS CARLOS FLOREZ
Scientia Et Technica , 2008,
Abstract: Este artículo presenta el modelo computacional implementado para el dise o y construcción del sistema de ventilación de la cámara calorimétrica principal de ensayos de equipos de acondicionamiento de aire tipo recinto, según norma internacional ISO 5151[1]. Se utiliza como herramienta el software FLOWORKS para fijar los principales parámetros de dise o (dimensiones, trayectorias y velocidades) para dar cumplimiento a las restricciones establecidas en la norma internacional en relación a la homogeneidad en temperatura, dirección y velocidad del aire en el recinto de ensayo.
Iniciativa de decreto sobre la propuesta de reforma política del presidente Felipe Calderón
Adrián Joaquín Miranda Camarena,Luis Antonio Corona Nakamura
Espiral , 2010,
Abstract: El presidente Felipe Calderón presenta un paquete de iniciativas, entre las que se encuentra la reforma política que tiene como fin dar más poder al ciudadano y fortalecer la democracia. Además, alienta al ciudadano para que participe y perciba que sus órganos de representación estén más atentos a sus demandas y necesidades. La iniciativa apunta a transformar los rasgos estructurales del régimen político autoritario en el ámbito del ejercicio del poder, no limitándose a lo electoral, por lo que además se pretende salir del estancamiento político y cambiar la dinámica viciosa de la representación legislativa y el conflicto frecuente entre Ejecutivo y Congreso. Por lo que consideró era urgente plantear una serie de cambios, a fin de que nuestro sistema político provenga del sufragio efectivo y pase a una democracia efectiva.
La elegibilidad en Jalisco
Adrián Joaquín Miranda Camarena,Luis Antonio Corona Nakamura
Espiral , 2011,
Abstract: La elegibilidad es un calificativo que denota la posibilidad de ser elegido o electo dentro de una República representativa, democrática y federal; se entiende que existen cargos de elección popular, que cada tres o seis a os se deberán elegir mediante elecciones auténticas, libres y periódicas. Tanto a nivel federal como local, la posibilidad de ser votado a cualquiera de los cargos de elección popular está supeditada a los requisitos que enmarcan tanto la Constitución Política de los Estados Unidos Mexicanos como la Constitución Política del Estado de Jalisco.
Antimicrobial Activity of Three Baccharis Species Used in the Traditional Medicine of Northern Chile
Glauco Morales,Adrián Paredes,Patricia Sierra,Luis A. Loyola
Molecules , 2008, DOI: 10.3390/molecules13040790
Abstract: The antimicrobial activities of aqueous ethanol and chloroform extracts of threeBaccharis species currently used in Northern Chile folk medicine for the treatment ofseveral infectious and inflammatory disorders were tested against Gram-positive andnegative bacteria and fungal spp. using the agar-disc diffusion assay. The results indicatedthat the activity was more pronounced against Gram-positive than against Gram-negativebacteria and yeast. No significant differences on the antibacterial activity were observed inthe aqueous ethanol versus chloroform extracts. None of the plant extracts evaluatedexhibited any activity against ten fungi tested.
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