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Search Results: 1 - 10 of 261098 matches for " José Domingo;Miranda Colín "
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Potencial productivo de cruzas intervarietales de maíz en la región semicálida de Guerrero
Palemón Alberto, Francisco;Gómez Montiel, Noel Orlando;Castillo González, Fernando;Ramírez Vallejo, Porfirio;Molina Galán, José Domingo;Miranda Colín, Salvador;
Revista mexicana de ciencias agrícolas , 2012,
Abstract: in the semi-warm regions of guerrero (about 1 500 m elevation) prevails sowing with native seeds (landrace), but there are also areas where improved maize can be established. in this paper we propose two intervarietal crosses as an alternative for farmers to increasing grain production, and these were selected after evaluating the agronomic performance of five parent varieties and their possible crosses in a factorial arrangement; two of them of tropical origin selected at least 10 generations to adapt to the highlands and the other three from native subtropical germplasm, obtained in the state of guerrero; also, besides the six intervarietal crosses and their parents, the local variety of the farmer and six varieties as a control were added to evaluate in a randomized complete block design with four replicates in the spring-summer, 2009, in two localities of intermediate elevation. the combined analysis across the environments showed significant differences in grain yield among crosses, parents and the controls. the vs-529*ve-1 and vs-529*ve-3 intervarietal crosses were higher in grain yield to their parents, the local variety of the farmer and commercial controls had other attributes, such as better ear health and plant expression intermediate for plant height, days to male and female flowering, and less lodging. the subtropical parent varieties per se were slightly higher in grain yield, ear weight and ear diameter compared with the tropical varieties, but they had slightly better health of plant and ear. parents ve-1, ve-3 and vs-529 had positive general combining ability (gca) effects; their crosses were those that showed higher grain yield, heterosis, earliness, better-looking plant and ear, while cist and sint-3-he exhibited negative gca effects. these results allowed to selecting the intervarietal crosses with favorable agronomic characteristics and production potential acceptable as an option to support the traditional corn of intermediate areas of the stat
Cruzas intervarietales de maíz para la región semicálida de Guerrero, México
Palemón Alberto, Francisco;Gómez Montiel, Noel Orlando;Castillo González, Fernando;Ramírez Vallejo, Porfirio;Molina Galán, José Domingo;Miranda Colín, Salvador;
Revista mexicana de ciencias agrícolas , 2011,
Abstract: the topography and agro-ecology of the guerrero state is diverse and in agricultural areas of intermediate elevation (1 200 to 1 700 m), almost no improved varieties are planted, due to unfavorable climatic and soil conditions, so it is difficult to establish a maize breeding program for every ecological niche. in these regions, the stability of 25 maize varieties was examined, during five summer-autumn crop seasons from 2005 to 2009; aiming to identify an intervarietal cross that was stable, consistent and with good yield potential through the environments. the data was analyzed in 20 varieties, using a randomized complete block design with three replications by location and combining locations. using this information, the stability parameters proposed by eberhart and russell, and described by molina were estimated, also the additive main effects and multiplicative interaction model (ammi) was applied. the v15 and v16 male parents showed stability and consistency through the environments; a similar behavior was shown by v3, v7 and v9 intervarietal crosses, they were also outstanding in grain yield; v11 was consistent and showed greater production potential in unfavorable environments. intervarietal crosses v1, v4, v6, v10, farmer's local variety v13 and female parents v17, v18 and v20, showed good response in favorable environments but were also inconsistent. the two methods used, showed similar results; so, it was possible to select three varieties by its grain yield potential, stability, and consistency in environments.
OCEAN FEATURE DETECTION USING MICROWAVE BACKSCATTER AND SUN GLINT OBSERVATIONS
Gagliardini,Domingo A; Colón,Pablo Clemente;
Gayana (Concepción) , 2004, DOI: 10.4067/S0717-65382004000200033
Abstract: synthetic aperture radar (sar) satellite sensors have demonstrated their ability to observe ocean features related to dynamical processes including internal waves, currents, eddies, fronts, and the presence of bathymetric features. because of the high resolution of available sar sensors, circulation details and small-scale processes can be detected that are not observable by other sensors more frequently used for ocean research such as the noaa avhrr and the orbview2 seawifs. in contrast to these, landsat-tm thermal and optical channels can be used to observe sea surface temperatures, surface layer ocean color (upwelled radiance) as well as sun glint (reflected radiance) patterns of surface roughness at a spatial resolution comparable to that of sar. several examples of tm images obtained in 1997-2002 over the argentine coastal ocean region where selected from an extensive data set. these images were analyzed and compared with a series of sar images acquired over the same region by the ers satellites and in some cases near coincident with the tm data. a close inspection of these data demonstrates that over a sun glint region, a high-resolution optical sensor can provide observations of sea surface patterns related to ocean dynamic processes very similar to those captured by sar. the ability of tm to detect such ocean features can extend and complement the use of sar data for ocean research
OCEAN FEATURE DETECTION USING MICROWAVE BACKSCATTER AND SUN GLINT OBSERVATIONS
Domingo A Gagliardini,Pablo Clemente Colón
Gayana (Concepción) , 2004,
Abstract: Synthetic Aperture Radar (SAR) satellite sensors have demonstrated their ability to observe ocean features related to dynamical processes including internal waves, currents, eddies, fronts, and the presence of bathymetric features. Because of the high resolution of available SAR sensors, circulation details and small-scale processes can be detected that are not observable by other sensors more frequently used for ocean research such as the NOAA AVHRR and the ORBVIEW2 SeaWiFS. In contrast to these, LANDSAT-TM thermal and optical channels can be used to observe sea surface temperatures, surface layer ocean color (upwelled radiance) as well as sun glint (reflected radiance) patterns of surface roughness at a spatial resolution comparable to that of SAR. Several examples of TM images obtained in 1997-2002 over the Argentine coastal ocean region where selected from an extensive data set. These images were analyzed and compared with a series of SAR images acquired over the same region by the ERS satellites and in some cases near coincident with the TM data. A close inspection of these data demonstrates that over a sun glint region, a high-resolution optical sensor can provide observations of sea surface patterns related to ocean dynamic processes very similar to those captured by SAR. The ability of TM to detect such ocean features can extend and complement the use of SAR data for ocean research
Adopción y proceso de revelación en Andalucía
Ocón Domingo, José
Revista Internacional de Sociologia , 2007,
Abstract: The changes on the family concept in Spain have also affected the adoption. It could be underlined the opening and social recognition of the adoptive family, in contrast with the traditional obscurantism and excessive secrecy. To abandon the anonymity and to improve the viability of these families, revealing the child about their adoptive condition and their origin has a capital importance. So this process has been, among others, the main topic of our researching (of qualitative nature) of seven andalusian families (four of national adoption and three internationals), that adopted their child between 1996 and 2000. First we have studied the information that the adoptive families have about their child and other aspects related to when, how and who was involved in the revealing process. Following to this, we have described the reactions of the adopted child and, finally, the paternal opinions before the possibility of their child being interested in investigating and meet their origins. Los cambios experimentados en Espa a en el concepto de familia también han afectado a la adopción. Cabe destacar la gran apertura y reconocimiento social que, frente al oscurantismo y secretismo tradicionales, hoy tiene la familia adoptiva. Para el abandono de este anonimato y la viabilidad de estas familias, la revelación a los hijos de su condición de adoptados y sus orígenes reviste una importancia fundamental. De ahí que en nuestra investigación (de naturaleza cualitativa), realizada sobre siete familias andaluzas (cuatro de adopción nacional y tres de internacional), que adoptaron entre los a os 1996 y 2000, se haya profundizado en los elementos involucrados en este proceso. En primer lugar, se ha estudiado la naturaleza de la información que las familias adoptivas tienen de sus hijos y otros aspectos relacionados con el cuándo, el cómo y el quién de la revelación. A continuación, se recogen las reacciones de los adoptados y, finalmente, las posiciones paternales ante la posibilidad de que sus hijos se muestren interesados por indagar y encontrarse con sus orígenes.
EL PROCEDIMIENTO ADUANERO. ESTUDIO COMPARATIVO Y ANALíTICO ENTRE ESTADOS UNIDOS DE AMéRICA Y MéXICO. UN ENSAYO DE DERECHO COMPARADO
José Domingo TENREIRO GIRóN
Boletín mexicano de derecho comparado , 2009,
Abstract:
Eupatorium guiengolense (Asteraceae: Eupatorieae), una nueva especie de Oaxaca, México
Leticia Torres Colín,José Luis Villase?or
Acta botánica mexicana , 1993,
Abstract: Colectas intensivas en el Distrito de Tehuantepec, Oaxaca, llevadas a cabo por el Herbario Nacional, dieron como resultado el descubrimiento de una especie nueva de Eupatorium. Esta especie nueva es descrita e ilustrada; se discuten sus afinidades con E. ovaliflorum y se proporciona una clave para su diferenciación.
Pharmacological strategies for Parkinson’s disease  [PDF]
José-Rubén García-Montes, Alejandra Boronat-García, René Drucker-Colín
Health (Health) , 2012, DOI: 10.4236/health.2012.431174
Abstract: Parkinson’s disease (PD) or Paralysis Agitans was first formally described in “An essay on the shaking palsy”, published in 1817 by a British physician named James Parkinson. In the late 1950’s, dopamine was related with the function of the corpus striatum, thus with the control of motor function. But it was not until 1967, when the landmark study of George C. Cotzias, demonstrated that oral L-DOPA, the precursor of dopamine metabolism, was shown to induce remission of PD symptoms, that the definitive association between the two was firmly established. However, later on L-DOPA treatment began to show a loss of effectiveness and demonstrated to induce a variety of undesirable effects, the most prominent being diskinesia. As a result of this, a variety of alternative or complementary pharmacological strategies have been developed. In this chapter we review the wide variety of strategies that have been used through time, which are geared toward reducing the most disabling symptoms of PD. We additionally make some suggestions as to which are the most promising ones.
Studies and Mechanism of Olefination Reaction in Aryl-Enolates with Paraformaldehyde  [PDF]
Jonathan Román Valdéz-Camacho, José Domingo Rivera-Ramírez, Jaime Escalante
International Journal of Organic Chemistry (IJOC) , 2019, DOI: 10.4236/ijoc.2019.91002
Abstract: A simple, efficient and low-cost methodology for the synthesis of α-aryl-α,β-unsaturated esters using paraformaldehyde as a source of carbon was developed. Factors that control reaction yields such as temperature, concentration and reaction time were evaluated. A mechanism is proposed based on experimental structures of the intermediates.
LA ADAPTACIóN FAMILIAR Y ESCOLAR DEL ADOPTADO
José Ocón Domingo,José álvarez Rodríguez
PROFESORADO , 2011,
Abstract: En este artículo se realiza una breve introducción sobre la situación actual de la adopción y se recogen las conclusiones más importantes aportadas por la investigación espa ola. Pero, fundamentalmente, tratamos de dar a conocer los resultados inéditos alcanzados en una investigación centrada en este recurso de protección de menores en Andalucía. Se han considerado, para este cometido, los procesos observados en siete familias (cuatro de adopción nacional y tres de adopción internacional), en torno a los problemas de salud, de desarrollo, afectivo-conductuales y escolares presentados por los adoptados, desde la acogida hasta la recogida de información. A fin de abordar éstos y otros aspectos se ha optado una novedosa metodología, de corte cualitativo, centrada en una entrevista abierta en profundidad a estos padres adoptivos.
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