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Search Results: 1 - 10 of 200363 matches for " Joaquín;Ponce Montoya "
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Ordenamiento ecológico comunitario: un modelo de manejo de recursos naturales para el desarrollo comunitario. Estudio de caso ejido Potrero de los López, Aguascalientes
Meraz Jiménez, Antonio de Jesús;Galarza Mendoza, José Luis;Sosa Ramírez, Joaquín;Ponce Montoya, Amalio;Torres González, Jorge Alejandro;
Revista Chapingo. Serie ciencias forestales y del ambiente , 2011, DOI: 10.5154/r.rchscfa.2010.11.044
Abstract: natural resource management based on participatory community-based environmental management (pcem) is a support tool to implement rural development projects at the community level, from a regional planning framework through the use and application of technical tools to analyze the potentials and limits of natural resources and the use of a methodology to drive participatory processes. management elements and production processes were characterized and defined using landform, land use and vegetation through field samplings of 1000 m2 plots for forests and 1 m2 ones for pasturelands, validated by sub-supervised spot image classification and the edaphological conditions proposed by inegi (1978). through participatory planning workshops conducted in 2006, the results of the technical analysis were compared and validated and the community proposals were identified. among the strategic guidelines are: appropriate livestock, agricultural, forestry and ecotourism uses; conservation, reconstruction of water bodies; and restoration of degraded ecosystems, which is based on taking decisions such as establishing buffer zones between use areas and conservation areas where the original ecosystem remains.
Palladium-Catalyzed Synthesis of Natural and Unnatural 2-, 5-, and 7-Oxygenated Carbazole Alkaloids from N-Arylcyclohexane Enaminones
Rafael Bautista,Pablo A. Montoya,Araceli Rebollar,Eleuterio Burgue?o,Joaquín Tamariz
Molecules , 2013, DOI: 10.3390/molecules180910334
Abstract: A palladium-catalyzed synthesis of the carbazole framework is described, including the preparation of 2-, 5-, and 7-oxygenated natural and unnatural carbazole alkaloids. A series of N-arylcyclohexane enaminones, generated by condensation of cyclohexane-1,3-dione with diverse anilines, were aromatized by a Pd(0)-catalyzed thermal treatment to afford the corresponding diarylamines. The latter were submitted to a Pd(II)-catalyzed cyclization and methylation processes to provide the desired carbazoles, including clausine V. Following an inverse strategy, a new and short total synthesis of glycoborine is also reported.
Extracción de nitrógeno en seis especies olerícolas durante su ciclo de crecimiento Nitrogen extraction in six vegetable species during their growth cycle
Rubén Bugarín-Montoya,Maximino Virgen-Ponce,Arturo Galvis-Spinola,Diego García-Paredes
Bioagro , 2011,
Abstract: El objetivo de la presente investigación fue determinar la concentración y acumulación de nitrógeno en función del tiempo en seis especies olerícolas cultivadas en sistemas sin suelo: col china (Brassica campestris), lechuga crespa (Lactuca sativa), rábano (Raphanus sativus), tomate (Solanum lycopersicum), pimiento (Capsicum annum) y pepinillo (Cucumis sativus). Durante el ciclo de cultivo se realizaron muestreos destructivos cuantificando la materia seca acumulada y la concentración porcentual de N. La concentración de N en la biomasa total de tomate, pimiento, pepinillo y rábano disminuyó durante su ciclo de crecimiento, mientras que en las hortalizas de hoja (col china y lechuga crespa), la concentración se mantuvo en constante incremento, alcanzando máximos de 4,0 a 4,7 % de N en la cosecha, valores mayores a los encontrados en el resto de las especies estudiadas. La acumulación de N al momento de la cosecha estuvo influenciada de manera determinante por la biomasa total producida en las diferentes especies. Las tasas máximas de absorción nutrimental difirieron entre las especies estudiadas y ocurrieron cuando la materia seca acumulada osciló entre 43,3 y 64,5 % del total. The objective of this research was to determine the concentration and accumulation of nitrogen of six horticultural species grown in soilless systems: chinese cabbage (Brassica campestris), crisp lettuce (Lactuca sativa), radish (Raphanus sativus), tomato (Solanum lycopersicum), pepper (Capsicum annum) and cucumber (Cucumis sativus). During the crop cycle, destructive samples were taken to measure the accumulated dry matter and the concentrations of N. The N content in the total biomass of tomato, pepper, cucumber and radish decreased during the growth season, while in foliar vegetables (chinese cabbage and crisp lettuce), the concentration continually increased reaching a maximum of 4.0 to 4,7 % of N at harvest, values higher than those found in the rest of the studied species. The nitrogen accumulation at harvest time was definitely influenced by the total biomass produced by the plants. The maximum rates of nutrient absorption were different among the species and occurred when the accumulated dry matter ranged between 43.3 and 64.5 % from the total.
Rese a: Las obras completas de Leo Strauss
Joaquín Abellán
Foro Interno : Anuario de Teoría Política , 2005,
Abstract:
Tourist satisfaction indices. A critical approach
Joaquín Alegre,Joaquín Alegre
Investigaciones Regionales , 2009,
Abstract: In literature, analyses can be found of the competitiveness of internationaltourist destinations, based on tourist satisfaction with different attributes. However,most of these analyses do not use one single measure to make a global assessment,which makes it difficult to compare destinations. The aim of this paper is twofold.First, some alternatives that can be used as a synthetic index of tourist satisfaction arediscussed. Second, the indices that are proposed are used to analyse a group of rivaldestinations for the European sun and sand tourism market. From the results that areobtained, the advantages of each of the proposed indices are discussed.
“ Junta queremos! El comienzo de la emancipación chilena” Un análisis historiográfico de la Independencia de Chile según tres historiadores libe-rales del siglo XX
Carolina Ponce Calderón
Summa Humanitatis , 2010,
Abstract: El presente artículo analiza las interpretaciones de tres historiadores de la escuela liberal chilena del siglo XX sobre el hito fundacional de la historiografía de este país: la Independencia. Dichos académicos, a saber, Sergio Villalobos, Julio Heise y Alfredo Jocelyn-Holt, habrían interpretado la creación de la Primera Junta Nacional de Gobierno de 1810 y el proceso de la Independencia de Chile como la expresión del liberalismo y el paso definitivo hacia la modernidad
Leonardo Padura
Néstor Ponce
Amerika : Mémoires, Identités, Territoires , 2010, DOI: 10.4000/amerika.568
Abstract: Nous abordons l’idée de territoire et ses rapports avec les récits policiers de Leonardo Padura dans une double perspective: d’une part, l’insertion du projet de l’auteur dans le domaine du roman policier cubain et dans un sens plus large du champ intellectuel de son pays; d’autre part, la représentation de la ville de La Havane et de sa société entre 1989 et 2003, représentation qui à son tour met en cause de manière dynamique les différentes représentations et constructions symboliques de la dite société à travers la littérature policière. We approach the idea of territory and its relations with the detective/noir novels of Leonardo Padura from a dual perspective: on the one hand, the insertion of the author's project in the specific field of the Cuban detective/noir novel and in a larger sense in the intellectual field of his country; and on the other hand, the representation of Havana and its society between 1989 and 2003, a representation that puts into question, in dynamic fashion, the different representations and symbolic constructions of that society through detective/noir literature.
éditorial
Néstor Ponce
Amerika : Mémoires, Identités, Territoires , 2010,
Abstract: L’émergence de la culture populaire dans les pays hispano-américains, vers la fin du XIXe siècle et surtout à partir du XXe, co ncide avec une série de processus politiques, sociaux et culturels. En effet, la modernisation de l’état conduite par les élites blanches et inspirée des modèles occidentaux, pose le problème du rapport avec l’ensemble du corps social et des grandes majorités écartées de l’exercice du pouvoir : Indiens, Noirs, immigrés. Les élites commencent alors à revendiquer les ...
éditorial
Néstor Ponce
Amerika : Mémoires, Identités, Territoires , 2010,
Abstract: La troisième parution d’Amerika s’inscrit dans la continuité du numéro antérieur qu’il complète et élargit, dans ses aspects géographiques (Brésil, Colombie, Cuba, Chili), thématiques (droits de l’homme, sociétés) et expressifs (arts plastiques, théatre, cinéma). Elle reprend une sélection de communications du colloque La mémoire et ses représentations esthétiques, tenu à Rennes 2 en février 2010. Cette rencontre a été l’occasion de rendre hommage (en coordination avec Norah Giraldi Dei-Cas e...
éditorial
Néstor Ponce
Amerika : Mémoires, Identités, Territoires , 2010,
Abstract: Ce deuxième numéro d’Amerika comprend deux dossiers. Le premier est issu d’une journée d’étude organisée en 2009 en collaboration avec l’équipe ACE (Anglophonie : Civilisations et écritures) et l’Institut des Amériques de Rennes autour de Imaginaires géopolitiques américains . Le deuxième correspond à une partie des communications retenues pour publication et présentées lors du colloque du LIRA (2010), Mémoire et représentations esthétiques en Amérique latine .Ces deux sujets, qui ont d...
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