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Search Results: 1 - 10 of 587274 matches for " Pía Valeria; "
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Del Movimiento de Trabajadores Desocupados a la cooperativa social: Trabajo y formas de militancia en la economía social
Rius,Pía Valeria;
Trabajo y sociedad , 2011,
Abstract: this article studies forms of work and militancy practices in desocupados' (unemployed workers') movements (mtd). it compares the militants' and the non-militants' conceptions of work observed in the same social milieu. it analyzes a textile cooperative in the city of berisso between 2003 and 2007. from an ethnographic standpoint, the article explores the relationships established between members and non-members, in particular, links between families, acquaintances and vecinos (neighbors). the analysis does not focus on the movement as political actor but conceptions of justice, notions of work and economic activity. political activities turn into work. work remains at the heart of representations of worthy activity but encompasses new practices. finally, the way discourse and the spoken word are apprehended by members and non-members within the groups signals a form of publicity supported by mutual, albeit fragile, agreements, through which discussion emerges in the workplace.
Del Movimiento de Trabajadores Desocupados a la cooperativa social: Trabajo y formas de militancia en la economía social From desocupados' movements to cooperatives and social economy in Argentina
Pía Valeria Rius
Trabajo y sociedad , 2011,
Abstract: El artículo estudia prácticas de trabajo y de militancia en los movimientos de trabajadores desocupados (MTD). Introduce una metodología de investigación que abandona una mirada exclusiva sobre los militantes, entendidos en el sentido habitual de referentes o dirigentes, para comprender el conjunto de relaciones que conforman la pertenencia a un movimiento de desocupados en un mismo medio social. Se basa en el estudio de una cooperativa textil situada en Berisso realizado entre 2003 y 2007. Una perspectiva de tipo etnográfica permite ir más allá de la relevancia política del MTD para poner de relieve concepciones de trabajo y de actividad económica. En particular se refleja la relación entre miembros y no miembros de la organización, lazos familiares y de vecindad. El trabajo continúa siendo la actividad legítima para ganarse la vida pero abarca nuevas prácticas. La actividad política es considerada una forma de trabajo. El trabajo y la militancia aparecen como dos condiciones necesarias en la transformación de organizaciones de desocupados y cooperativas de trabajo. La consigna de trabajo digno de los MTD adquiere la forma de un trabajo, sin patrón, respetado o bancado. Se trata de frágiles acuerdos mutuos que se producen mediante la discusión en el seno de lugar de trabajo. This article studies forms of work and militancy practices in desocupados' (unemployed workers') movements (MTD). It compares the militants' and the non-militants' conceptions of work observed in the same social milieu. It analyzes a textile cooperative in the city of Berisso between 2003 and 2007. From an ethnographic standpoint, the article explores the relationships established between members and non-members, in particular, links between families, acquaintances and vecinos (neighbors). The analysis does not focus on the movement as political actor but conceptions of justice, notions of work and economic activity. Political activities turn into work. Work remains at the heart of representations of worthy activity but encompasses new practices. Finally, the way discourse and the spoken word are apprehended by members and non-members within the groups signals a form of publicity supported by mutual, albeit fragile, agreements, through which discussion emerges in the workplace.
Evaluación del ensayo de L-prolina iminopeptidasa para el diagnóstico de vaginosis bacteriana
Marguet,Emilio Rogelio; Aloisi,Pía Valeria; Vallejo,Marisol;
Acta bioqu?-mica cl?-nica latinoamericana , 2004,
Abstract: the detection of specific enzymes has potential use in the diagnosis of bacterial vaginosis (bv). l-proline iminopeptidase activity was assayed in vaginal fluid samples from 253 patients, and these results were compared to those obtained by a microscopic examination method based on 6 grades of classification. in the 6 grades a direct correlation between the numbre of the the cases with enzyme activity and the shift in the vaginal flora from lactobacillus morphotypes to a mixed flora composed mainly of gram negative rods, gram-variable rods and curved gram negative rods, was found. the specificity and sensitivy of the assay for the prediction of bv were 97.7% and 94.8%, respectively, values that were comparable with those found in previus evaluations. the results of the evaluation suggest that l-proline imipeptidase assay is a simple and rapid method that can be used as a complementary toll for the diagnosis of bv.
Evaluación del ensayo de L-prolina iminopeptidasa para el diagnóstico de vaginosis bacteriana Evaluation of L- proline iminopeptidase assay for the diagnosis of bacterial vaginosis
Emilio Rogelio Marguet,Pía Valeria Aloisi,Marisol Vallejo
Acta bioqu?-mica cl?-nica latinoamericana , 2004,
Abstract: La detección de enzimas específicas es potencialmente útil para el diagnóstico de vaginosis bacteriana (VB). La actividad de la L-prolina iminopeptidasa fue ensayada en muestras de exudados vaginales de 253 pacientes y estos resultados se compararon con los obtenidos por un método de examen microscópico basado en 6 grados de clasificación. En los 6 grados se halló una relación directa entre el número de casos con actividad enzimática y el cambio en la flora vaginal de morfotipos de Lactobacillus a una flora mixta compuesta principalmente por bacilos gram negativos, bacilos gram variables y bacilos gram negativos curvos. La especificidad y sensibilidad del método para la predicción de VB fueron 97,7% y 94, 8%, respectivamente, valores comparables con los hallados en evaluaciones previas. Los resultados de la evaluación sugieren que el ensayo de L-prolina iminopeptidasa es un método simple y rápido que puede ser utilizado como herramienta complementaria para el diagnóstico de VB. The detection of specific enzymes has potential use in the diagnosis of bacterial vaginosis (BV). L-proline iminopeptidase activity was assayed in vaginal fluid samples from 253 patients, and these results were compared to those obtained by a microscopic examination method based on 6 grades of classification. In the 6 grades a direct correlation between the numbre of the the cases with enzyme activity and the shift in the vaginal flora from Lactobacillus morphotypes to a mixed flora composed mainly of gram negative rods, gram-variable rods and curved gram negative rods, was found. The specificity and sensitivy of the assay for the prediction of BV were 97.7% and 94.8%, respectively, values that were comparable with those found in previus evaluations. The results of the evaluation suggest that L-proline imipeptidase assay is a simple and rapid method that can be used as a complementary toll for the diagnosis of BV.
Statistical Properties of the T-exponential of Isotropically Distributed Random Matrices
Anton S. Il'yn,Valeria A. Sirota,Kirill P. Zybin
Physics , 2015,
Abstract: A functional method for calculating averages of the time-ordered exponential of a continuous isotropic random $N\times N$ matrix process is presented. The process is not assumed to be Gaussian. In particular, the Lyapunov exponents and higher correlation functions of the T-exponent are derived from the statistical properties of the process. The approach may be of use in a wide range of physical problems. For example, in theory of turbulence the account of non-gaussian statistics is very important since the non-Gaussian behavior is responsible for the time asymmetry of the energy flow.
LACTANCIA MATERNA Y VIH/SIDA HIV/AIDS AND BREASTFEEDING
Valeria Cortés F,Jaime Pérez A,Lilian Ferrer L,Rosina Cianelli A
Revista Chilena de Nutricíon , 2006,
Abstract: VIH/SIDA es una pandemia que afecta a hombres, mujeres y ni os, pero que presenta una tendencia hacia la feminización, afectando especialmente a mujeres jóvenes. Su consecuencia es el aumento de la transmisión vertical, durante el embarazo, parto o lactancia materna. Este estudio bibliográfico describe la relación entre VIH/SIDA y lactancia materna, explicitando factores que influyen en la elección de la modalidad de alimentación de madres viviendo con VIH/SIDA. Se describen causas de morbimortalidad infantil asociada y recomendaciones internacionales de lactancia en mujeres con VIH/SIDA. En un mundo globalizado con constantes migraciones poblacionales, estos resultados representan un llamado de atención para profesionales de salud quienes deben considerar factores sociales que influenciarán la toma de decisión de madres viviendo con VIH/SIDA al escoger la modalidad de lactancia. No sólo basta conocer el riesgo de transmisión vertical, sino que se debe tomar conciencia de aquellos factores dinámicos y específicos de cada comunidad HIV/AIDS is a pandemic that affects men, women and children, but is increasingly affecting women, especially among reproductive age. This has consequences over vertical transmission during pregnancy, delivery or breastfeeding. This analysis describes the relation between HIV/AIDS and breastfeeding, and the factors that influence the decision mothers living with HIV/AIDS make about the feeding modality they will choose. Also, causes of infant mortality in relation with this problem are described in accordance with international recommendations to prevent mother to child transmission. In this environment where globalization takes place, constant migrations have created a need for health care workers to consider social factors that influence the decision of women living with HIV/AIDS in relation with feeding options for their infants. It is not enough to know the proven risk for HIV/AIDS transmission through breastfeeding, there is a need to be conscious about the dynamic and specific factors each community has
Bacteriostatic action of synthetic polyhydroxylated chalcones against Escherichia coli
Alvarez,María De Los Angeles; Zarelli,Valeria E. P.; Pappano,Nora B.; Debattista,Nora B.;
Biocell , 2004,
Abstract: in previous work the bacteriostatic action of trihydroxylated chalcones against staphylococcus aureus atcc 25 923 was investigated. in this work the action of 2′,4′,2-(oh)3-chalcone, 2′,4′,3-(oh)3- chalcone and 2′,4′,4-(oh)3 -chalcone against escherichia coli atcc 25 922 was evaluated. growth kinetic curves of e.coli were made in nutritive broth added with increasing drug concentrations. the specific growth rates of the microorganisms were calculated by a kinetic turbidimetric method, which was previously probed and the minimal inhibitory concentrations (mic′s) were evaluated by a mechanism of action proposed. the mics of 2′,4′,3-(oh)3-chalcone and 2′,4′,2-(oh)3-chalcone were 46 mg/ml and 122 mg/ml, respectively. the 2′,4′,4-(oh)3-chalcone was inactive. the mic value of 2′, 4′, 3-(oh) 3-chalcone (46 mg/ml), more active than 2′, 3-(oh) 2-chalcone (72.2 mg/ml) may be due to the introduction of an electron donating group (-oh) at position 4′ in the aromatic a- ring, which activates the region that includes the 2′-hydroxyl neighbur group and the a,b- unsaturated carbonyl group.
Bacteriostatic action of synthetic polyhydroxylated chalcones against Escherichia coli
María De Los Angeles Alvarez,Valeria E. P. Zarelli,Nora B. Pappano,Nora B. Debattista
Biocell , 2004,
Abstract: In previous work the bacteriostatic action of trihydroxylated chalcones against Staphylococcus aureus ATCC 25 923 was investigated. In this work the action of 2′,4′,2-(OH)3-chalcone, 2′,4′,3-(OH)3- chalcone and 2′,4′,4-(OH)3 -chalcone against Escherichia coli ATCC 25 922 was evaluated. Growth kinetic curves of E.coli were made in nutritive broth added with increasing drug concentrations. The specific growth rates of the microorganisms were calculated by a kinetic turbidimetric method, which was previously probed and the minimal inhibitory concentrations (MIC′s) were evaluated by a mechanism of action proposed. The MICs of 2′,4′,3-(OH)3-chalcone and 2′,4′,2-(OH)3-chalcone were 46 mg/ml and 122 mg/ml, respectively. The 2′,4′,4-(OH)3-chalcone was inactive. The MIC value of 2′, 4′, 3-(OH) 3-chalcone (46 mg/ml), more active than 2′, 3-(OH) 2-chalcone (72.2 mg/ml) may be due to the introduction of an electron donating group (-OH) at position 4′ in the aromatic A- ring, which activates the region that includes the 2′-hydroxyl neighbur group and the a,b- unsaturated carbonyl group.
Variable number tandem repeats in the promoter region of prostacyclin synthase gene in choline deficient rats
Valeria C. Denninghoff,Georgina P. Ossani,Ana M. Uceda,Maria A. Avagnina
Biocell , 2010,
Abstract: Weanling Sprague-Dawley rats were fed on a choline-deficient diet with hydrogenated vegetable oil and corn oil as lipids develop acute renal failure. Pathogenesis of the latter is controversial and an ischemic mechanism has been proposed. Arachidonic acid derivatives are involved in the regulation of vascular tonus. Vasospasm could be due to an increase in tromboxane A2-mediated vasoconstriction or to a decrease in prostacyclin-induced vasodilatation. Enzymes involved in the synthesis of both compounds are tromboxane A2- and prostacyclin-synthase respectively. The aim of this study was to identify the variable number tandem repeats (VNTR) in the promoter region of prostacyclin synthase gene and verify if there exists a relationship between the occurrence of VNTR in those choline-deficient rats which die because of acute renal failure and those which do not. We verified the presence of the VNTR in the prostacyclin synthase rat gene, but we did not find any difference in the molecular weight of the alleles between experimental and control rats. Renal reparation of the acute kidney injury due to choline deficiency in some rats is not related with differences in VNTR in the promoter region of the prostacyclin synthase gene.
Multiplex Real-Time PCR for Detection of Staphylococcus aureus, mecA and Panton-Valentine Leukocidin (PVL) Genes from Selective Enrichments from Animals and Retail Meat
Valeria Velasco, Julie S. Sherwood, Pedro P. Rojas-García, Catherine M. Logue
PLOS ONE , 2014, DOI: 10.1371/journal.pone.0097617
Abstract: The aim of this study was to compare a real-time PCR assay, with a conventional culture/PCR method, to detect S. aureus, mecA and Panton-Valentine Leukocidin (PVL) genes in animals and retail meat, using a two-step selective enrichment protocol. A total of 234 samples were examined (77 animal nasal swabs, 112 retail raw meat, and 45 deli meat). The multiplex real-time PCR targeted the genes: nuc (identification of S. aureus), mecA (associated with methicillin resistance) and PVL (virulence factor), and the primary and secondary enrichment samples were assessed. The conventional culture/PCR method included the two-step selective enrichment, selective plating, biochemical testing, and multiplex PCR for confirmation. The conventional culture/PCR method recovered 95/234 positive S. aureus samples. Application of real-time PCR on samples following primary and secondary enrichment detected S. aureus in 111/234 and 120/234 samples respectively. For detection of S. aureus, the kappa statistic was 0.68–0.88 (from substantial to almost perfect agreement) and 0.29–0.77 (from fair to substantial agreement) for primary and secondary enrichments, using real-time PCR. For detection of mecA gene, the kappa statistic was 0–0.49 (from no agreement beyond that expected by chance to moderate agreement) for primary and secondary enrichment samples. Two pork samples were mecA gene positive by all methods. The real-time PCR assay detected the mecA gene in samples that were negative for S. aureus, but positive for Staphylococcus spp. The PVL gene was not detected in any sample by the conventional culture/PCR method or the real-time PCR assay. Among S. aureus isolated by conventional culture/PCR method, the sequence type ST398, and multi-drug resistant strains were found in animals and raw meat samples. The real-time PCR assay may be recommended as a rapid method for detection of S. aureus and the mecA gene, with further confirmation of methicillin-resistant S. aureus (MRSA) using the standard culture method.
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