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Search Results: 1 - 10 of 718969 matches for " Mónica María; "
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Selection of Maize Genotypes with Tolerance to Osmotic Stress Associated with Salinity  [PDF]
Mónica B. Collado, Mónica B. Aulicino, Miguel J. Arturi, María del C. Molina
Agricultural Sciences (AS) , 2016, DOI: 10.4236/as.2016.72008
Abstract: Thirteen different inbred lines in relation to the type of grain and life cycles were characterized by testing for osmotic stress associated with salinity. The identification of tolerant genotypes would be an effective strategy to overcome the saline stress. Osmotic stress reduces immediately the expansion of the roots and young leaves which determine a reduction in the size of the plant. A completely randomized design was adopted to test seedlings under controlled conditions of light and temperature. Two treatments were used: 0 mM NaCl (as control) and 100 mM NaCl. After 15 days of complete salinization, the seedlings were harvested and several morphological traits were measured. The morphological traits of growth were leaf growth (Ar1, Ar2, Ar3 and Ar4), dry masses of shoot and root (SDM and RDM, respectively). Also, traits associated with water economy were registered: leaf water loss (LWL) and relative water content (RWC). The morphological traits were expressed in relative terms, while the traits associated with the economy of water were expressed in absolute terms. Uni and multivariate techniques were applied to identify genotypes with divergent behaviors to osmotic stress tolerance. Also, a Tolerance Index was employed to identify superior genotypes. Four clusters were obtained after applying a Cluster Analysis and Principal Component Analysis (PCA). The genotypes were compared to each other with a test of DMS. The results obtained with different statistical techniques converged. Some variables presented a differential weight classification of genotypes. The morphological traits like RDM, SDM, Ar3, Ar4 and Ar5 were the most discriminating. Tolerance Index allowed to classify genotypes, thus SC2 and AD3 lines were that reached highest value of the index and therefore would be tolerant lines, while AF3 and LP3 had a low index and were seen as sensible.
Generational Mean Analysis of Salt Tolerance during Osmotic Phase in Maize Seedling  [PDF]
Mónica B. Collado, Mónica B. Aulicino, Miguel J. Arturi, María del C. Molina
American Journal of Plant Sciences (AJPS) , 2019, DOI: 10.4236/ajps.2019.104040
Abstract: This study details the nature and magnitude of the genetic effects associated with various quantitative characters (morphological and hydric relations) measured in maize seedlings during the osmotic phase of saline stress (100 mM NaCl). Three lines with differential behavior in salt stress: SC2 (tolerant), AFE (susceptible) and LP3 (moderately tolerant) were used to obtain contrasting crosses (SC2 × AFE) and (SC2 × LP3). An analysis of six generational means (P1, P2, F1, F2, BC1 and BC2) was applied for each cross. First a scaling test was applied and then a three and six-parameter genetic models were used to estimate various genetic components. In none of the traits studied there was evidence of adequacy to the three parameter model, which indicates important epistatic effects in genetic expression. The dominant genetic effects were greater than the additive ones for all the characters evaluated. LG showed positive and significant differences for [h] in both crosses, indicating the presence of hybrid vigor and its possible use in the improvement. Low value of [d] and high of [h] both significant in SC2 × AFE, indicates existence of genes dispersion between the parental lines. While, for the cross SC2 × LP3, the low and significant value of [d] and not significant value of [
Determinantes de la multilocalizaciónde empresas exportadoras de manufacturasen Colombia
Sinisterra,Mónica María;
Lecturas de Economía , 2009,
Abstract: the purpose of this document is to investigate the determinants of the intra-regional multilocation of manufacturing export firms in 2007. for this goal, a dataset at the level of the firm is used from proexport and superintendencia de sociedades databases, which estimates a bivariate logit model that allows us to find the characteristics of manufacturing export firms that decide to be located in more than one place in the national territory. the empirical results show that the export firms with a bigger probability of multilocation in colombia are those firms that are big, are not capital-intensive, have high sales, and high leverage.
Efectos de las técnicas de filtrado en la evaluación de un modelo de ciclos económicos reales
Mónica María Sinisterra
Lecturas de Economía , 2009,
Abstract: The purpose of this document is to investigate the determinants of the intra-regionalmultilocation of manufacturing export firms in 2007. For this goal, a dataset at the level of thefirm is used from Proexport and Superintendencia de Sociedades databases, which estimates abivariate logit model that allows us to find the characteristics of manufacturing export firmsthat decide to be located in more than one place in the national territory. The empirical resultsshow that the export firms with a bigger probability of multilocation in Colombia are thosefirms that are big, are not capital-intensive, have high sales, and high leverage.
El afecto depresivo o la clínica del vacío.
Mónica María Palacio.
Affectio Societatis , 2004,
Abstract: Teniendo como fondo la invitación a ocuparnos hoy de una Clínica del vacío , necesaria en función de los efectos que sobre el sujeto postmoderno tiene el discurso de la ciencia, el presente trabajo nos sitúa en uno de los terrenos más difíciles de transitar en el campo clínico, a saber, el de la depresión. Desde Freud hasta Lacan y con la ayuda de otros autores, nos muestra un recorrido que más que un aporte teórico a la cuestión, constituye una herramienta necesaria para quienes hoy no podemos dejar de escuchar y observar los alcances de dicho discurso en el devenir humano. Aquí, el afecto depresivo no es ya el resultado de una experiencia de vacío que se particulariza en una queja cada vez más frecuente, sino, según se devela, de una falla al nivel del deseo que implica, por tanto, interrogar sus coordenadas, y por esta vía, tocar las desgracias del ser.
E-learning as a Key for Regional Integration through Countries of MERCOSUR
Mónica María Silvestri
International Journal of Advanced Corporate Learning (iJAC) , 2011, DOI: 10.3991/ijac.v4i4.1736
Abstract: The Center of training for regional integration (CEFIR, in Spanish) was founded more than 20 years with the firm intention to dedicate efforts on issues of regional integration in the four countries of MERCOSUR. Since 2008 has promoted the creation of a platform for e-learning and delivered some courses in blended learning and e-learning mode, for training in regional integration issues. E-learning has become a transversal theme in the organization and became an efficient instrument for promoting regional integration of the 4 countries of the brick. The heterogeneity of countries, cultures and even languages raised a number of challenges when implementing the e-learning strategy.
Caracterización morfológica de especies del género Passiflora de Colombia
Marín Tangarife Mónica María
Acta Agronómica , 2009,
Abstract: Se caracterizaron 21 especies de Passiflora las que incluyeron tres subgéneros, mediante 66 descriptores cuantitativos y 100 cualitativos. El análisis de componentes principales (ACP) de los descriptores cuantitativos identificó dos componentes con valor propio superior a 1, asociados con hoja y flor, los cuales explicaron 80% de la varianza total de las accesiones estudiadas. Con el análisis factorial de correspondencia múltiple (AFCM) de los descriptores cualitativos se identificaron tres dimensiones, que explicaron 82% de la varianza total; a la segunda se asociaron tipo de crecimiento, número de flores por nudo y color de la última serie de los filamentos en el ápice; a la tercera, forma y margen de la bráctea, margen de la bráctea; y a la primera las demás variables cualitativas. El análisis de agrupamiento (distancias de 'city-block-Manhattan') evidenció dos grandes grupos, según la longitud del hipantio -especies con flor de hipantio corto y largo-. El análisis de clasificación también mostró que la morfología floral fue determinante en la discriminación infragenérica en Passiflora.
La relación del estándar de prueba de la duda razonable y la presunción de inocencia desde el garantismo procesal en el Proceso Penal Colombiano
Bustamante Rúa,Mónica María;
Revista Opinión Jurídica , 2010,
Abstract: evidence, among them, reasonable inference (to formulate imputation), probability of truth (to formulate accusation), and knowledge beyond any doubt (for judgment of conviction), which allow identifying concept application such as probability in the current system. when reading standard demanded to pronounce a verdict from procedure guarantee, a narrow relation between innocence presumption and the limit from which the judge may accept a hypothesis as true in the criminal trial is found. consequently, a study of presumption of innocence presumption is proposed not only from the principle perspective and treatment rule, but also as both evidentiary and judgment rule. this means that, when evidences submitted before a judge are not enough to pronounce sentence and there is still a doubt, presumption of innocence should be applied as a judgment rule -in dubio pro reo.
La relación del estándar de prueba de la duda razonable y la presunción de inocencia desde el garantismo procesal en el Proceso Penal Colombiano
Mónica María Bustamante Rúa
Revista Opinión Jurídica , 2010,
Abstract: En el proceso penal colombiano se consagran diferentes estándares deprueba, entre ellos, inferencia razonable (para la formulación de imputación),probabilidad de verdad (para la formulación de la acusación) y el conocimientomás allá de toda duda (para la sentencia condenatoria), los cuales permitenidentificar la aplicación de conceptos como el de probabilidad en el actualsistema. Al leer el estándar que se exige para dictar sentencia condenatoriadesde el garantismo procesal, se encuentra una relación estrecha entre lapresunción de inocencia y el umbral a partir del cual el juez puede aceptaruna afirmación de hecho o una hipótesis como verdadera dentro del procesopenal, de allí que se proponga el estudio de la presunción de inocencia nosolo desde la perspectiva de principio y regla de tratamiento, sino tambiéncomo regla probatoria y regla de juicio, esto es, cuando no se alcanza el gradode conocimiento exigido al juez para dictar sentencia condenatoria y subsistela duda debe darse aplicación a la presunción de inocencia como regla dejuicio -in dubio pro reo-.
Dietary Supplementation with Probiotic Strain Improves Immune-Health in Aged Mice  [PDF]
Verónica Molina, Marta Médici, Julio Villena, Graciela Font, Maríaa Taranto
Open Journal of Immunology (OJI) , 2016, DOI: 10.4236/oji.2016.63008
Abstract: Ageing is associated with several anatomical and physiological changes of the organism, and the increase in global elderly population promotes the research to develop strategies to improve their quality of life. In this work, we characterized the immunological alterations naturally produced during aging in a mice model, and evaluated the effect of probiotic Lactobacillus (L.) rhamnosus CRL1505 administration on those immunological parameters. We demonstrated that L. rhamosus CRL1505 was able to improve peritoneal macrophages phagocytic activity, and the number of intestinal IgA+ cells in aged mice, reaching values of those parameters similar to young adult mice. The results of this work indicate that is plausible that the immunobiotic CRL1505 strain may find applications as a beneficial immunomodulator in aging to reinforce the intestinal and systemic immunity. The immune modulation in aging induced by L. rhamnosus CRL1505 could lead to the development of new strategies for functional foods specifically tailored for the elderly.
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