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Search Results: 1 - 10 of 315674 matches for " G. Báez "
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Los diez a os de la Revista Avances en Enfermería
Báez Mariela G. de
Avances en Enfermería , 1993,
Abstract: El primer número de la Revista Avances en Enfermería apareció en diciembre de 1982, fueron varios los acontecimientos que antecedieron esta culminación. La inquietud de los docentes planteada varias veces, en relación con la falta de divulgación de sus trabajos; un movimiento de enfermería a nivel nacional, donde se enfatizaba el interés por la expresión escrita e igualmente, en la Universidad existía la preocupación por la publicación del quehacer docente. Vino entonces la decisión de las directivas de la facultad, la búsqueda de recursos y el nombramiento del comité editorial, conformado por cuatro profesoras en quienes recayó la tarea de hacer realidad el propósito de contar con un órgano de difusión del trabajo académico e investigativo de las docentes de la Facultad
Nueva estrategia para la recuperación de errores sintácticos Strategy for Syntax Error Recovering
Báez Henry F,Vargas Juan G
Ingeniería e Investigación , 2003,
Abstract: Este artículo describe una nueva estrategia de recuperación de errores sintácticos para un compilador de lenguaje que no utiliza separadores de instrucciones como el punto y coma ";" o los corchetes de apertura "{" y de cierre "}". Esta estrategia se desarrolla en 4 pasos: 1.encontrar un conjunto de tokens (llamado conjunto ACEPTA) para cada símbolo no terminal de la gramática; 2. en el análisis sintáctico de cada símbolo no terminal, se eliminan tokens que no se encuentren en el conjunto ACEPTA; 3. eliminar tokens repetidos que no son aceptados por la gramática y 4. completar símbolos en el análisis sintáctico con la esperanza que el token que no se ha borrado coincidirá más adelante con un símbolo terminal esperado por el análisis sintáctico. En caso contrario, el token se eliminará en algunas producciones determinadas. La estrategia de recuperación de errores sintácticos es una metodología que puede usarse en cualquier gramática libre de contexto y no ambigua, incluso en las que utilizan separadores de instrucciones como el ";". Se implementa de forma algorítmica y es mucho más fácil de implementar que otras estrategias clásicas como las basadas en pilas. This paper describes a new strategy for syntax error recovering for a compiler that does not have instruction separators like ";" or opening and closing brackets like "{" and "}". This strategy is based on 4 steps. 1. Find a set of tokens (called ACEPTA set) for each non terminal symbol of the grammar. 2. During the syntax analysis of each non terminal symbol, eliminate the tokens that are not in the ACEPTA set. 3. Eliminate repeated tokens that are not accepted by the grammar, and 4. Complete symbols in the syntax analysis with the hope that the token that has not been erased later will match with a terminal symbol expected by the syntax analyser; otherwise the symbol will be eliminated in some particular productions. The strategy for sintax error recovering is a method that can be used in whatever not ambiguos context free grammar includying those that use instruction separators like ";". It is implemented with an algorithm and it is much more easy to implement than other strategies for syntax error recovering like those based on stacks.
Effect of Photon Flux Density and Exogenous Sucrose on the Photosynthetic Performance during In Vitro Culture of Castanea sativa  [PDF]
Patricia L. Sáez, León A. Bravo, Manuel Sánchez-Olate, Paulina B. Bravo, Darcy G. Ríos
American Journal of Plant Sciences (AJPS) , 2016, DOI: 10.4236/ajps.2016.714187
Abstract: The low photon flux density (PFD) under in vitro conditions and sucrose added to the culture medium negatively limits the photochemical activity and photoprotective mechanisms of microshoots. In this work we hypothesize that decreasing sucrose in the culture medium in combination with increasing irradiance, could improve the photosynthesis and consequently the in vitro growth. We evaluated the effect of exogenous sucrose (30 and 5 g·L-1, HS and LS, respectively), under different PFD (50 and 150 μmol photons m-2·s-1, LL and HL, respectively) on the photosynthetic performance and growth of Castanea sativa microshoots. Decreasing sucrose negatively affected the physiological attributes evaluated. Only chloroplast ultrastructure was improved by LS; however this did not lead to an improved in photosynthesis or growth. HL HS produced an increase in photosynthetic activity and chlorophyll contents, reaching under these conditions a higher proliferation rate and biomass production. Additionally, the photochemical activity (electron transport rate and non-photochemical quenching) was improved by HL. Thus, our results suggest that, at least for C. sativa HL is beneficial during the in vitro culture, improving photosynthetic performance as well as growth, but this is only possible in the presence of moderate concentrations of sucrose added to the culture medium.
BEHAVIOR OF HERBICIDE BENSULFURON-METHYL IN MICROWAVE-ASSISTED SOLVENT EXTRACTION (MASE) FROM SOILS WITH DIFFERENT PHYSICOCHEMICAL CHARACTERISTICS
ROA,LUIS G.; BáEZ,MARíA E.;
Journal of the Chilean Chemical Society , 2003, DOI: 10.4067/S0717-97072003000300008
Abstract: the feasibility of mase application in the determination of bensulfuron-methyl (bsm) in soils with different organic matter content, consequently with a different capability to adsorb this herbicide is studied. hydrolysis experiments were performed to check the significance of degradation under various temperature and time conditions in aqueous-acetonitrile solutions at various ph. results are shown of the application of the method developed in the determination of bsm in two characteristic chilean soils (organic matter content 1.4 and 11.4 % and ph 7.2 and 5.1, respectively). the maximum temperature that can be used during the heating program is 60c, where the two main degradation products were undetected and recovery percentages reached 95%.
Relación entre variables sociales, productivas y económicas en 16 predios campesinos lecheros de la provincia de Valdivia, Chile
Lerdon,J; Báez,A; Azócar,G;
Archivos de medicina veterinaria , 2008, DOI: 10.4067/S0301-732X2008000200010
Abstract: this study explains the behaviour of productive variables as a function of social and economic variables of 16 small dairy farms from the farming management programme of the río bueno farm management center (centro de gestión agrícola de río bueno, cega s.a.), for the periods 2000-2001 and 2001-2002. a multiple linear regression analysis was conducted considering three dependent variables: production seasonality, milk production (l/cow/year), and own capital profitability (%). these three variables were obtained using an expert panel method. the explanatory variables included social, productive, economic and financial aspects. the results showed that during the first period, production seasonality was related to the variables own capital profitability and the size of the area destined to milk production, while in the second period it was related to the financial solvency of a farm. the milk production variable was related to milk price in both periods. the own capital profitability variable was related to the cost of milk (per liter) in both periods, and to the area used in milk production, in the second period only.
Relación entre variables sociales, productivas y económicas en 16 predios campesinos lecheros de la provincia de Valdivia, Chile Relation between social, productive and economical variables of sixteen small dairy farms of the Valdivia Province, Chile
J Lerdon,A Báez,G Azócar
Archivos de medicina veterinaria , 2008,
Abstract: El presente trabajo trata de explicar el comportamiento de variables productivas, en función de variables sociales y económicas, en 16 predios campesinos lecheros pertenecientes al Programa de Gestión Agropecuaria que realiza el Centro de Gestión Agrícola de Río Bueno, CEGA S.A., contemplando dos períodos productivos, 2000-2001 y 2001-2002. Se realizó un Análisis de Regresión Lineal Múltiple, donde se consideraron tres variables dependientes: estacionalidad de la producción, producción de leche (litros/vaca masa/a o), rentabilidad de los capitales propios (%), determinadas a través de panel de expertos. Las variables explicativas utilizadas fueron de tipo social, productivas, económicas y financieras. El análisis determinó que las variables que resultaron significativas para la estacionalidad en la primera temporada fueron rentabilidad del capital propio obtenida en el período anterior y superficie del rubro lechería, en cambio para la segunda temporada fue el precio de la leche y la tasa de solvencia. Para la producción, en ambas temporadas resultó ser significativa la variable precio. Para la rentabilidad resultó ser significativa en la primera temporada el costo por litro y en la segunda el costo por litro y la superficie destinada a la lechería. This study explains the behaviour of productive variables as a function of social and economic variables of 16 small dairy farms from the Farming Management Programme of the Río Bueno Farm Management Center (Centro de Gestión Agrícola de Río Bueno, CEGA S.A.), for the periods 2000-2001 and 2001-2002. A Multiple Linear Regression analysis was conducted considering three dependent variables: production seasonality, milk production (L/cow/year), and own capital profitability (%). These three variables were obtained using an expert panel method. The explanatory variables included social, productive, economic and financial aspects. The results showed that during the first period, production seasonality was related to the variables own capital profitability and the size of the area destined to milk production, while in the second period it was related to the financial solvency of a farm. The milk production variable was related to milk price in both periods. The own capital profitability variable was related to the cost of milk (per liter) in both periods, and to the area used in milk production, in the second period only.
BEHAVIOR OF HERBICIDE BENSULFURON-METHYL IN MICROWAVE-ASSISTED SOLVENT EXTRACTION (MASE) FROM SOILS WITH DIFFERENT PHYSICOCHEMICAL CHARACTERISTICS
LUIS G. ROA,MARíA E. BáEZ
Journal of the Chilean Chemical Society , 2003,
Abstract: The feasibility of MASE application in the determination of Bensulfuron-methyl (BSM) in soils with different organic matter content, consequently with a different capability to adsorb this herbicide is studied. Hydrolysis experiments were performed to check the significance of degradation under various temperature and time conditions in aqueous-acetonitrile solutions at various pH. Results are shown of the application of the method developed in the determination of BSM in two characteristic Chilean soils (organic matter content 1.4 and 11.4 % and pH 7.2 and 5.1, respectively). The maximum temperature that can be used during the heating program is 60C, where the two main degradation products were undetected and recovery percentages reached 95%.
Pegylated interferon induced interstitial pneumonitis in a patient with hepatitis C infection Neumonitis intersticial secundaria a tratamiento con interferón pegilado
J. Torres Macho,B. Jara Chinarro,B. Suárez Aliaga,S. Gámez Díez
Revista Espa?ola de Enfermedades Digestivas , 2010,
Abstract: Pegylated interferon and ribavirin is the treatment of choice in patients with chronic hepatitis C infection. The most common side effects of interferon therapy are flu-like symptoms and psychiatric disorders. Pneumonitis is a less frequent complication associated with non-negligible mortality. We herein report a case of interferon associated pneumonitis in a patient with non-severe clinical symptoms and a normal chest radiography. Physicians should be aware of this entity during the differential diagnosis of respiratory symptoms in patients receiving treatment with interferon due to its high morbimortality and good resolution and outcome after drug withdrawal. El interferón pegilado asociado a ribavirina es el tratamiento de elección en los pacientes con infección por hepatitis C crónica. Los efectos secundarios más comunes son los síntomas gripales y las alteraciones psiquiátricas. La neumonitis es una complicación poco frecuente, pero se asocia con una mortalidad no despreciable. Presentamos el caso clínico de un paciente con neumonitis intersticial asociada a interferón que presentaba signos y síntomas clínicos sutiles y una radiografía de tórax sin alteraciones. Se debe de tener presente esta entidad en el diagnóstico diferencial de los síntomas respiratorios en pacientes que reciben tratamiento con interferón debido a su elevada morbi-mortalidad y a su evolución favorable tras la retirada del fármaco.
Relación entre leptina e insulina sanguíneas en mujeres chilenas obesas y no obesas Relationship between leptin and insulin blood levels in obese and lean Chilean women
Cecilia Albala B,Francisco Pérez B,José Luis Santos M,Mabel Yá?ez G
Revista médica de Chile , 2000,
Abstract: Background: Leptin, a product of ob gene and insulin blood levels, are proportional to the amount of adipose tissue. Insulin could have an independent regulatory effect on leptin secretion. Aim: To assess the relationship between serum leptin and plasma insulin levels in obese and lean Chilean women. Material and methods: One hundred forty five women, aged 20 to 60 years old, were studied. Weight, height, waist and hip circumference, fasting blood glucose, insulin and leptin levels were measured. Insulin resistance was assessed using the homeostasis model assessment. The relationship between different variables was determined using multiple linear regression, variance analysis and non parametric correlation. Results: Leptin serum concentrations were positively correlated with body mass index, insulin plasma levels and degree of insulin resistance. The association of leptin with insulin was independent of body mass index and persisted after adjustments by body fat distribution and age. Conclusions: Insulin and insulin resistance are associated to high blood leptin levels and this association is independent of the degree of adiposity and body fat distribution.
Combined Effects of the North Atlantic Oscillation and the Arctic Oscillation on Sea Surface Temperature in the Alborán Sea
José C. Báez, Luis Gimeno, Moncho Gómez-Gesteira, Francisco Ferri-Yá?ez, Raimundo Real
PLOS ONE , 2013, DOI: 10.1371/journal.pone.0062201
Abstract: We explored the possible effects of the North Atlantic Oscillation (NAO) and Arctic Oscillation (AO) on interannual sea surface temperature (SST) variations in the Alborán Sea, both separately and combined. The probability of observing mean annual SST values higher than average was related to NAO and AO values of the previous year. The effect of NAO on SST was negative, while that of AO was positive. The pure effects of NAO and AO on SST are obscuring each other, due to the positive correlation between them. When decomposing SST, NAO and AO in seasonal values, we found that variation in mean annual SST and mean winter SST was significantly related to the mean autumn NAO of the previous year, while mean summer SST was related to mean autumn AO of the previous year. The one year delay in the effect of the NAO and AO on the SST could be partially related to the amount of accumulated snow, as we found a significant correlation between the total snow in the North Alborán watershed for a year with the annual average SST of the subsequent year. A positive AO implies a colder atmosphere in the Polar Regions, which could favour occasional cold waves over the Iberian Peninsula which, when coupled with precipitations favoured by a negative NAO, may result in snow precipitation. This snow may be accumulated in the high peaks and melt down in spring-summer of the following year, which consequently increases the runoff of freshwater to the sea, which in turn causes a diminution of sea surface salinity and density, and blocks the local upwelling of colder water, resulting in a higher SST.
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