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Search Results: 1 - 10 of 38727 matches for " Basilio Gabriel;Castillo González "
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Contribución de fósforo al mejoramiento de calidad en Lilium y la relación con Glomus fasciculatum y Bacillus subtilis
Rubí Arriaga, Martín;González Huerta, Andrés;Olalde Portugal, Víctor;Reyes Reyes, Basilio Gabriel;Castillo González, Ana María;Pérez López, Delfina de Jesús;Aguilera Gómez, Luis Isaac;
Revista mexicana de ciencias agrícolas , 2012,
Abstract: lilium sp. is among the most important species in the production of cut-flowers in mexico, but its cultivation is based on the use of significant amounts of chemical fertilizers, so it is desirable to minimize the impact on the ecosystem without compromising the product quality. this study was conducted to evaluate the main effects and interactions of phosphorus, glomus fasciculatum and bacillus subtilis, on the commercial quality of flowers of lilium oriental hybrid showwinner under greenhouse conditions. in two consecutive cycles between 2007 and 2008, 12treatments inafactorial arrangement 2*3*2 were studied using analysis of variance, comparing treatment means with the test of least significant difference (lsd, p = 0.05) and main component analysis. g. fasciculatum, 22 μg ml-1 of phosphorus and b. subtilis were positively correlated with root dry weight, plant height, stem dry weight, petal width, flower diameter, flower dry weight, life of the flower, flowering time and concentration in the stems of zinc (zn), copper (cu), potassium (k), nitrogen (n), phosphorus (p) and calcium (ca). these results show that the rhizosphere microorganisms used, may interact positively to promote growth and development of the plant and improve the quality of lilium sp. with 22 μg ml-1 of phosphorus.
Contribución de fósforo al mejoramiento de calidad en Lilium y la relación con Glomus fasciculatum y Bacillus subtilis Phosphorus contribution to improving quality in Lilium and its relationship with Glomus fasciculatum and Bacillus subtilis
Martín Rubí Arriaga,Andrés González Huerta,Víctor Olalde Portugal,Basilio Gabriel Reyes Reyes
Revista mexicana de ciencias agrícolas , 2012,
Abstract: Lilium sp. se ubica entre las especies de mayor importancia en la producción de flores de corte en México, pero su cultivo se basa en la utilización de cantidades importantes de fertilizantes químicos, por lo que es deseable minimizar el impacto sobre el ecosistema sin disminuir la calidad del producto. Este estudio se realizó con el objetivo de evaluar los efectos principales y las interacciones de fósforo, Glomus fasciculatum y Bacillus subtilis, sobre la calidad comercial de flores de Lilium híbrido oriental Showwinner en condiciones de invernadero. En dos ciclos consecutivos entre 2007 y 2008 se estudiaron 12 tratamientos bajo un arreglo factorial 2*3*2 aplicando análisis de varianza, comparación de medias de tratamientos con la prueba de la diferencia mínima significativa (DMS, p= 0.05) y análisis de componentes principales. G. fasciculatum, 22 μgml-1 de fósforo y B. subtilis tuvieron correlación positiva con peso seco de raíz, altura de la planta, peso seco deltallo, ancho de pétalo, diámetro de la flor, peso seco de la flor, vida de la flor, período de floración y concentración en los tallos de zinc (Zn), cobre (Cu), potasio (K), nitrógeno (N), fósforo (P) y calcio (Ca). Estos resultados muestran que los microorganismos rizósfericos utilizados, pueden interactuar positivamente para promover el crecimiento y el desarrollo de la planta y mejorar la calidad de Lilium sp. con 22 μg ml-1 de fósforo. Lilium sp. is among the most important species in the production of cut-flowers in Mexico, but its cultivation is based on the use of significant amounts of chemical fertilizers, so it is desirable to minimize the impact on the ecosystem without compromising the product quality. This study was conducted to evaluate the main effects and interactions of phosphorus, Glomus fasciculatum and Bacillus subtilis, on the commercial quality of flowers of Lilium oriental hybrid Showwinner under greenhouse conditions. In two consecutive cycles between 2007 and 2008, 12treatments inafactorial arrangement 2*3*2 were studied using analysis of variance, comparing treatment means with the test of least significant difference (LSD, p = 0.05) and main component analysis. G. fasciculatum, 22 μg ml-1 of phosphorus and B. subtilis were positively correlated with root dry weight, plant height, stem dry weight, petal width, flower diameter, flower dry weight, life of the flower, flowering time and concentration in the stems of zinc (Zn), copper (Cu), potassium (K), nitrogen (N), phosphorus (P) and calcium (Ca). These results show that the rhizosphere microorganisms used, may inte
Intracellular Delivery of siRNA by Polycationic Superparamagnetic Nanoparticles
Betzaida Castillo,Lev Bromberg,Xaira López,Valerie Badillo,Jose A. González Feliciano,Carlos I. González,T. Alan Hatton,Gabriel Barletta
Journal of Drug Delivery , 2012, DOI: 10.1155/2012/218940
Abstract: The siRNA transfection efficiency of nanoparticles (NPs), composed of a superparamagnetic iron oxide core modified with polycationic polymers (poly(hexamethylene biguanide) or branched polyethyleneimine), were studied in CHO-K1 and HeLa cell lines. Both NPs demonstrated to be good siRNA transfection vehicles, but unmodified branched polyethyleneimine (25 kD) was superior on both cell lines. However, application of an external magnetic field during transfection (magnetofection) increased the efficiency of the superparamagnetic NPs. Furthermore, our results reveal that these NPs are less toxic towards CHO-K1 cell lines than the unmodified polycationic-branched polyethyleneimine (PEI). In general, the external magnetic field did not alter the cell’s viability nor it disrupted the cell membranes, except for the poly(hexamethylene biguanide)-modified NP, where it was observed that in CHO-K1 cells application of the external magnetic field promoted membrane damage. This paper presents new polycationic superparamagnetic NPs as promising transfection vehicles for siRNA and demonstrates the advantages of magnetofection.
Distribución espacial del pH de los suelos agrícolas de Zapopan, Jalisco, México
Ibarra Castillo, Daniel;Ruiz Corral, José Ariel;González Eguiarte, Diego Raymundo;Flores Garnica, José Germán;Díaz Padilla, Gabriel;
Agricultura técnica en México , 2009,
Abstract: the objective of this study was to determine the spatial distribution of soil ph in agricultural lands in the zapopan county, jalisco, mexico. in 2004, 105 geo-referenced soil samples were taken in the county from 0-60cm depths cores and analyzed for ph. the determined ph values were organized in an electronic spreadsheet to integrate a geo-referenced data base. two spatial interpolation techniques were tested: ordinary kriging and inverse distance weighting. by comparing the square mean error and a cross validation, ordinary kriging was selected for generating a raster image of soil ph. with this image and using idrisi32 geographical information system it was possible to obtain different interpretations of soil ph spatial distribution. all the agricultural soils of zapopan are acid; although, at different levels of intensity. a strong acidic condition was found in 61.10% of the area and moderate acidic condition in 38.90%.
LA FUNDAMENTACIóN DE LAS SENTENCIAS Y LA SANA CRíTICA
González Castillo,Joel;
Revista chilena de derecho , 2006, DOI: 10.4067/S0718-34372006000100006
Abstract: the so-called system of legal or "assessed" evidence (prueba legal o tasada) is soon to be abandoned in chilean law. it is to be replaced by the so-called system of "sane criticism" (sana crítica), i.e. a judge-based assessment of the value of the evidence brought up in a particular trial. it is therefore more urgent than ever to determine what the sana crítica really is, which are its key elements, its limits and, most importantly, its relationship with the duty of the judges to ground o provide their sentences with enough motives. this article analyzes how the scholars, the caselaw and the law deal with this tool. finally, it criticizes the way the judges have been using the sana crítica
LAS CLáUSULAS LIMITATIVAS, EXONERATIVAS O AGRAVANTES DE RESPONSABILIDAD EN MATERIA CONTRACTUAL. VALIDEZ Y LíMITES
González Castillo,Joel;
Revista chilena de derecho , 2011, DOI: 10.4067/S0718-34372011000100005
Abstract: this article discusses modification of contractual responsibility clauses in its three variants, namely, exoneration, limitation and aggravation of liability. the study focuses on the first two provisions because they are the ones that have caused more doctrinal discussion. even some authors have asserted that exculpatory clauses would not be valid due to lack of consideration. the analysis covers the basis of these clauses, the objections that have been made regarding them, their classification, limits, effects and interpretation. consent of the weaker party in the context of pre-formulated standard contracts, where such clauses are used extensively, and known as "unfair terms" is discussed in the last part of the article with reference also to the directive of the european union that regulates them.
El Derecho de Propiedad y la Intangibilidad de los Contratos en la Jurisprudencia de los Requerimientos de Inaplicabilidad: Comentario a Sentencias “Autopista Central S.A. con Servicio de Mecánica Mantención Track S.A.”, de 26 de diciembre de 2006, y “HQI Transelec S.A. con Empresa Eléctrica Panguipulli S.A.”, de 6 de marzo de 2007
González Castillo,Joel;
Revista chilena de derecho , 2007, DOI: 10.4067/S0718-34372007000200007
Abstract: abstract: the present article analyzes two recent sentences of the chilean constitutional court where property right violation was argued, among other aspects. it is an interdisciplinary approach, from civil and constitutional law, to such important civil right and also to other aspects of high relevance, such as sanctity of contracts to the legislator, the essence of rights, incorporeal property, non-retroactivity law, and unjust enrichment.
PRODUCTS LIABILITY IN EUROPE AND THE UNITED STATES*: RESPONSABILIDAD POR PRODUCTOS DEFECTUOSOS EN EUROPA Y ESTADOS UNIDOS
Joel González Castillo
Revista Chilena de Derecho : Publicado por la Facultad de Derecho Universidad Católica de Chile , 2012,
Abstract: This article examines three linked questions which are considered key elements for the configuration of a products liability system. First, defect categories, i.e., manufacturing defects, design defects, and insufficient warnings. Second, how to determine whether the design of a product is defective. Two possibilities become available at this point: consumer expectations test or risk-utility analysis. And, finally, whether to apply negligence or strict liability in cases of damages caused by defective products. Este artículo trata tres cuestiones vinculadas entre sí que son consideradas esenciales para la configuración de un sistema de responsabilidad por productos defectuosos. Primero, categoría de defectos: defectos de fabricación, defectos de dise o y defectos de información. Segundo, cómo determinar si el dise o de un producto es defectuoso habiendo al respecto dos posibilidades: expectativas del consumidor o el análisis riesgo-utilidad. Y, finalmente, si aplicar responsabilidad por culpa u objetiva en casos de da os causados por productos defectuosos.
LAS CLáUSULAS LIMITATIVAS, EXONERATIVAS O AGRAVANTES DE RESPONSABILIDAD EN MATERIA CONTRACTUAL. VALIDEZ Y LíMITES LIMITATION, EXONERATION AND AGRAVATION OF LIABILITY CLAUSES. VALIDATION AND LIMITS.
Joel González Castillo
Revista Chilena de Derecho : Publicado por la Facultad de Derecho Universidad Católica de Chile , 2011,
Abstract: Este artículo trata sobre las cláusulas modificatorias de responsabilidad contractual en sus tres variantes, esto es, eximentes, limitativas y agravantes de responsabilidad. Las dos primeras son las que concentran el análisis pues son las que han provocado mayor discusión doctrinal llegándose a afirmar por algunos autores que las exonerativas no serían válidas por falta de causa. El análisis abarca el fundamento de estas cláusulas, las objeciones que se han formulados a su respecto, su clasificación, límites, efectos e interpretación. El consentimiento de la parte más débil en el marco de los contratos de adhesión, donde estas cláusulas son profusamente usadas, y conocidas como "cláusulas abusivas", concentran la última parte del artículo con referencia también a la Directiva de la Unión Europea que las regula. This article discusses modification of contractual responsibility clauses in its three variants, namely, exoneration, limitation and aggravation of liability. The study focuses on the first two provisions because they are the ones that have caused more doctrinal discussion. Even some authors have asserted that exculpatory clauses would not be valid due to lack of consideration. The analysis covers the basis of these clauses, the objections that have been made regarding them, their classification, limits, effects and interpretation. Consent of the weaker party in the context of pre-formulated standard contracts, where such clauses are used extensively, and known as "unfair terms" is discussed in the last part of the article with reference also to the Directive of the European Union that regulates them.
LA FUNDAMENTACIóN DE LAS SENTENCIAS Y LA SANA CRíTICA
Joel González Castillo
Revista Chilena de Derecho : Publicado por la Facultad de Derecho Universidad Católica de Chile , 2006,
Abstract: Pronto en Chile la prueba legal o tasada dejará de ser el régimen general de valoración de la prueba ocupando su lugar el sistema de la sana crítica. Más que nunca interesa, por tanto, determinar qué es verdaderamente la sana crítica, cuáles son sus elementos esenciales, sus límites y en especial su vinculación con el deber de los tribunales de fundamentar o motivar adecuadamente sus sentencias. Se analiza el tratamiento doctrinal, jurisprudencial y legislativo de la sana crítica. Y finalmente se hace un análisis crítico de la forma en que los jueces han hecho uso de esta herramienta The so-called system of legal or "assessed" evidence (prueba legal o tasada) is soon to be abandoned in Chilean law. It is to be replaced by the so-called system of "sane criticism" (sana crítica), i.e. a judge-based assessment of the value of the evidence brought up in a particular trial. It is therefore more urgent than ever to determine what the sana crítica really is, which are its key elements, its limits and, most importantly, its relationship with the duty of the judges to ground o provide their sentences with enough motives. This article analyzes how the scholars, the caselaw and the law deal with this tool. Finally, it criticizes the way the judges have been using the sana crítica
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