WorldWideScience

Sample records for cauca valley colombia

  1. First record of Diatraea tabernella in the Cauca River Valley of Colombia

    Science.gov (United States)

    Diatraea tabernella (Dyar) is first recorded in the Cauca River Valley of Colombia. Even though information on its status has been unknown for almost a century in Colombia, its recent register creates concern about its potential economic importance in virtue of its abundance and distribution in the ...

  2. Composition patterns of waterbirds from la vieja river, geographic valley of cauca river, colombia

    OpenAIRE

    Laura Milena Ramírez-Urrea; Enrique Arbeláez-Cortés; Oscar Humberto Marín-Gómez; Diego Duque-Montoya

    2014-01-01

    We compiled and analyzed data gathered from observations during the period 2001-2013 in three sectors along La Vieja river, located in the Cauca river valley, Colombia. We describe spatial and temporal aspects of such dataset, focusing in indentify patterns of species’ composition and abundance. We recorded 28 waterbird species in 33 transects, being 22 species observed in more than 50 % of these transects. The species richness among transects did not shows significant differences. However, t...

  3. The Role of Non-Formal Education in Rural Development: A 10-year Case Study of the Cauca River Valley, Colombia.

    Science.gov (United States)

    Garcia, Alvardo Pedrosa

    1980-01-01

    Details several agricultural and health development programs initiated during the past decade in the Cauca Valley in Colombia. Introduced through nonformal educational strategies making use of media, these programs have had mixed results. (LLS)

  4. Composition Patterns of Waterbirds from La Vieja River, Geographic Valley of Cauca River, Colombia

    Directory of Open Access Journals (Sweden)

    Laura Milena Ramírez-Urrea

    2014-02-01

    Full Text Available We compiled and analyzed data gathered from observations during the period 2001-2013 in three sectors along La Vieja river, located in the Cauca river valley, Colombia. We describe spatial and temporal aspects of such dataset, focusing in indentify patterns of species’ composition and abundance. We recorded 28 waterbird species in 33 transects, being 22 species observed in more than 50 % of these transects. The species richness among transects did not shows significant differences. However, two cluster analyses, considering both presence/absence and abundance data, showed that there is spatial structure in the species composition along the river. In contrast, although observations were conducted during more than ten years there is no evidence of temporal changes in species composition. Still, some species showed increase ordecrease trends in their frequency. We present a new record for one species (Chloroceryle aenea for the region. Despite that the landscape surrounding La Vieja river have faced a high anthropogenic impact, the river still presents a significant diversity of waterbirds, which could add value to the conservation plans in the zone. PATRONES DE LA COMPOSICIÓN DE AVES ACUÁTICAS EN ELRÍO LA VIEJA, VALLE GEOGRÁFICO DEL RÍO CAUCA, COLOMBIARESUMENCompilamos y analizamos los datos de observaciones realizadas entre los años 2001 y 2013 en tres sectores a lo largo del cauce del río La Vieja, ubicado en el valle geográfico del río Cauca, Colombia. Describimos los datos espacial y temporalmente, enfocándonos en identificar patrones de composición y abundancia de especies. Registramos 28 especies de aves acuáticas en 33 transectos, siendo 22 especies observadas en más del 50 % de los transectos. Las diferencias en el número de especies por transecto no fueron significativas entre los tres sectores del río. Sin embargo, dos análisis de agrupamiento, considerando tanto los datos de presencia/ausencia como de

  5. EFECTO DE VINAZAS SOBRE HONGOS QUE FORMAN MICORRIZA ARBUSCULAR EN UN MOLISOL DEL VALLE DEL CAUCA, COLOMBIA EFFECT OF VINASSE ON ARBUSCULAR MYCORRHIZAL FUNGI IN A MOLLISOL OF CAUCA VALLEY (COLOMBIA

    Directory of Open Access Journals (Sweden)

    Diana Cristina Velásquez Pomar

    2011-06-01

    has the potential as fertilizer, the “Ingenios azucareros” of Cauca Valley (Colombia, have begun research to improve the productivity and vinasse effects on chemical and physical soil properties. There are few publications about vinasse´s effect on biological properties, such as arbuscular mycorrhizal fungi (AMF. In order to know if AMF are affected by vinasse, white corn (Zea mays L. SV1127 was grown in a Pachic Haplustolls of a Cauca Valley with potassium deficient, under greenhouse conditions. A completely randomized design was established with 5 treatments: one control and 4 with vinasse:KCl in a ratio of 100:0, 75:25, 50:50 and 0:100 proportions. The external mycelium length (EML, activity of external mycelium (AEM, easily extractable glomalin (EEG and total glomalin (TG were estimated 36 and 70 days after sowing. With the exception of EEG, the other variables were significantly affected by treatments. The results indicate that to supply K deficiency through vinasse or KCl, increased significantly EML (maximum value 10,4 m•g-1 with 100% vinasse and AEM (between 50 - 62%. TG was sensitive to the source of K (organic or inorganic and depressed by 100 % KCl. Increases in biological activity could be related with effects of vinasse on EML and AEM. Studies indicate that fertility gradients affect TG, related to rates of decomposition of this molecule.

  6. Unapal-Llanogrande, nuevo cultivar de zapallo adaptado a las condiciones del valle geográfico del río Cauca, Colombia Unapal Llanogrande, pumkim new cultivar adapted to the Cauca Valley, Colombia

    Directory of Open Access Journals (Sweden)

    Edgar Iván Estrada Salazar

    2010-04-01

    Full Text Available El nuevo cultivar de zapallo (Cucurbita moschata Unapal-Llanogrande se originó a partir de la población básica P-34 obtenida en la segunda colección colombiana de germoplasma realizada por Montes (2003. La población heterogénea (P-34 fue sometida a tres ciclos de selección recurrente fenotípica para los caracteres: producción por planta, prolificidad, tamaño de fruto pequeño (2 - 3 kg, calidad de fruto y sanidad de la planta. El cultivar expresa alta uniformidad y estabilidad fenotípica para hábito de crecimiento postrado con moderado número de guías, tallo cilíndrico angular y pubescente, hojas lobuladas reniformes pequeñas, con alta frecuencia de manchas plateadas, floración monoica, inicio de floración estaminada y pistilada entre 60-70 días después de la emergencia, inicio de cosecha de 130 a140 días, con plantas de alta prolificidad (9 a 11 frutos y alto rendimiento (entre 10 y 20 kg/planta. El fruto es redondo con superficie lisa, sin costillar, de color verde brillante y manchas amarillas o rojizas en la madurez, el peso varía entre 1.5 y 3.0 kg, el diámetro de pulpa entre 3.8 y 4.8 cm y el de cavidad placentaria entre 9 y 12 cm. El color de pulpa es amarillo intenso.Unapal-Llanogrande, is a pumkin (Cucurbita moschata breeding population, originated from the second germoplasm colombian colection obtained for Consuelo Montes (2003. The heterogeneous population P-34 was subjected to three cycles of phenotypic recurrent selection that were carried out at Experimental Center of the National University of Colombia, Palmira, Valle del Cauca. Plant production, plant prolific, small fruit weight, fruit quality and tolerance to diseases and pests were evaluated. The Unapal-Llanogrande, had height uniformity and stability postrate growth habit, low number of branch per plant, 60-70 days to male and female flowering, 130-140 days to harvesting. Fruits had a round shape, green whit yellow an red spot colors at maturity, fruit

  7. Host preference of the arbovirus vector Culex erraticus (Diptera: Culicidae) at Sonso Lake, Cauca Valley Department, Colombia.

    Science.gov (United States)

    Mendenhall, I H; Tello, S A; Neira, L A; Castillo, L F; Ocampo, C B; Wesson, D M

    2012-09-01

    Culex erraticus (Dyar & Knab) is a competent vector of Eastern equine encephalitis virus and subtype IC Venezuelan equine encephalitis virus, and both St. Louis encephalitis virus and West Nile virus have been isolated from field-collected specimens. Previous bloodmeal analysis studies have shown this species to be a generalist, feeding on a variety of mammals, birds, reptiles, and amphibians. This behavior can bridge arboviral transmission across different vertebrate groups. Our study examined the host preference of Cx. erraticus at Sonso Lake in Colombia. From July to August 2008, blood-engorged mosquitoes were collected from resting boxes, while vertebrate abundance was determined to calculate host preference. Based on mitochondrial DNA analysis of bloodmeals, birds were the predominant hosts (57.6%), followed by mammals (30.8%), and reptiles (6.7%); 9.5% of the bloodmeals were mixed. The most commonly fed upon species were: limpkin, black-crowned night-heron, striated heron, human, and capybara. Forage ratios showed the least bittern, limpkin, Cocoi heron, striated heron, capybara, and black-crowned night heron were preferred hosts across all vertebrates. Of the available avifauna, the least bittern, limpkin, striated heron, Cocoi heron, and black-crowned night heron were preferred, whereas the bare faced ibis, great egret, snowy egret, and cattle egret were under-used. This study shows that while Cx. erraticus is an opportunistic feeder, using diverse vertebrate hosts in the environment, certain avian species are targeted preferentially for bloodmeals. PMID:23025191

  8. Hybrid Fv - Biogas/Diesel System Measuring With Homer. Case of Application: Farm Pozo Verde, Jamundi Municipality, Cauca Valley, Colombia; Dimensionado de un Sistema Hibrido Fv - Biogas/Diesel mediante el Empleo de la Herramienta Homer. Caso de Aplicacion: Granja Pozo Verde, Municipio de Jamundi, Valle del Cauca, Colombia

    Energy Technology Data Exchange (ETDEWEB)

    Dominguez, J.; Manrique, P. A.; Pinedo, I.

    2009-11-25

    This report completes the previous one, by adding the characterization of renewable energy systems based on optimization and sizing tools. A case study has been carried out in the Valley of Cauca (Colombia) using HOMER, once the solar energy potential was defined. This work is about the production of electricity using hybrid power systems (HPS). The HPS chosen for this study is based on two of the most common energy resources in most of Colombian rural areas: solar energy and biomass waste. The biomass waste is obtained by animal manure from livestock farms, particularly from pigs, which is highly valued in terms of energy production. The breeding of pigs has a huge economic, environmental and social importance in this Colombian region. In this report, the HPS technology and the energy contribution of the biogas produced from animal manure are described. A technical and economic simulation of a HPS has been performed using the optimization tool HOMER. These reports are the result of a collaboration established between Universidad del Valle (Colombia) and CIEMAT (Spain), and have been done by the author while his staying at our center included on his PhD program. Keywords: renewable energies, hybrid systems, biogas, technology sizing, rural electrification, Latin America. (Author) 8 refs.

  9. Analysis of the Solar Resource Information Datasets for Thermal and/or electric Generation Using a Geographical Information System. Cases of Application: Central Cafeteria - University of the Valley, Cali Municipality and Farm {sup P}ozo Verde{sup ,} Jamundi Municipality , Cauca Valley, Colombia; Analisis de las Fuentes de Informacion sobre Recurso Solar para Generacion Termica y/o Electrica Empleando un Sistema de Informacion Geografica. Casos de Aplicacion: Cafeteria Central - Universidad del Valle, Municipio de Cali y Granja {sup P}ozo Verde{sup ,} Municipio de Jamundi, Valle del Cauca, Colombia

    Energy Technology Data Exchange (ETDEWEB)

    Dominguez, J.; Manrique, P. A.; Pinedo, I.

    2009-10-12

    In this report, two examples of renewable energy assessments based on Geographical Information Systems are presented. Several case studies have been carried out in the Valley of Cauca (Colombia), and one on them has been used to size a hybrid system. The results of this particular case study are presented in a second report. The aim of this document is analysing the different sources of data that could be used in the characterization of solar energy for electricity and electricity-heat use. With this purpose, data of two areas in Valley of Cauca obtained from the Atlas of Solar Radiation of Colombia, SWERA project and SSE-NASA have been compared. The data coming from these sources has been analysed using a Geographical Information System, and the conclusions are described along with cartographic and numeric products. These reports are the result of a collaboration established between Universidad del Valle (Colombia) and CIEMAT (Spain), and have been done by the author while his staying at our center included on his PhD program.

  10. Influencia de la aplicación de vinaza en actividad y biomasa microbiana en un Entic Dystropept y un Fluventic haplustoll del Valle del Cauca, Colombia Influence of the vinasse application on activity and microbial biomass in an Entic dystropept and a Fluventic haplustoll soils of the Cauca Valley, Colombia

    Directory of Open Access Journals (Sweden)

    Sandra Patricia Montenegro Gómez

    2009-01-01

    Full Text Available Con la aplicación de vinaza, residuo de la producción de alcohol carburante a partir de la caña de azúcar, se evaluó el efecto sobre la actividad y biomasa microbiana del suelo y el suministro de K+ al cultivo de maíz dulce (Zea Mays en un Entic Dystropept y un Fluventic Haplustoll del Valle del Cauca, Colombia. Se utilizó un diseño completamente al azar con cuatro tratamientos y cinco repeticiones: T1 (100% requerimiento de K+ con KCl, T2 (100% requerimiento de K+ con vinaza, T3 (50% requerimiento de K+ con KCl +50% con vinaza y T4 (25% requerimiento de K+ con KCl +75% con vinaza. Se estimó biomasa microbiana por el método de fumigación-extracción. Se realizó análisis de varianza, prueba de comparación de medias, regresiones y correlaciones (SAS. Se presentaron diferencias significativas en la actividad y biomasa microbiana por época de muestreo y entre los diferentes muestreos; al final del cultivo el Entic Dystropept presentó el contenido más alto de biomasa microbiana-C en el T2, mientras que en el Fluventic Haplustoll fue en el T1. El menor qCO2 fue para el T2 del Entic Distropept y T1 del Fluventic Haplustoll, estos tratamientos presentaron mayor acumulación de biomasa en cada suelo respectivamente T2 (30 450 kg ha-1 y T1 (21 015.6 kg ha-1.With the vinasse application, a residue from the production of fuel ethanol from sugarcane, the effect on the activity of soil microbial biomass an the supply of K+ to crop sweet corn (Zea Mays in two soils of the Cauca Valley, Colombia were evaluated: Entic Dystropept and Fluventic Haplustoll . Was used a completely randomized design with four replications and five treatments: T1 (100% requirement of K+ with KCl, T2 (100% requirement of K+ with vinasse, T3 (50% requirement of K+ with KCl + 50% with vinasse, T4 (25% requirement of K+ with KCl +75% with vinasse. The microbial biomass was estimated by the fumigation-extraction method. The results were evaluated using analysis of variance

  11. Influencia de la aplicación de vinaza en actividad y biomasa microbiana en un Entic Dystropept y un Fluventic haplustoll del Valle del Cauca, Colombia Influence of the vinasse application on activity and microbial biomass in an Entic dystropept and a Fluventic haplustoll soils of the Cauca Valley, Colombia

    OpenAIRE

    Sandra Patricia Montenegro Gómez; Juan Carlos Menjivar Flórez; Carmen Rosa Bonilla Correa; Raúl Madriñán Molina

    2009-01-01

    Con la aplicación de vinaza, residuo de la producción de alcohol carburante a partir de la caña de azúcar, se evaluó el efecto sobre la actividad y biomasa microbiana del suelo y el suministro de K+ al cultivo de maíz dulce (Zea Mays) en un Entic Dystropept y un Fluventic Haplustoll del Valle del Cauca, Colombia. Se utilizó un diseño completamente al azar con cuatro tratamientos y cinco repeticiones: T1 (100% requerimiento de K+ con KCl), T2 (100% requerimiento de K+ con vinaza), T3 (50% requ...

  12. Efecto de la fertilización en la nutrición y rendimiento de ají (Capsicum spp. en el Valle del Cauca, Colombia Effect of the fertilization on the nutrition and yield of the red pepper (Capsicum spp. in the Valley of the Cauca, Colombia.

    Directory of Open Access Journals (Sweden)

    Edgar A Rodríguez Araujo

    2010-01-01

    Full Text Available En el estudio se evaluó el efecto de las fertilizaciones química y orgánica y biofertilización en la nutrición y rendimiento del ají (Capsicum spp. en el Valle del Cauca, Colombia, y en la producción de plántulas en vivero y en campo. Las variables evaluadas en vivero fueron: peso fresco de raíz y parte aérea, número de hojas, altura de la planta (cm, diámetro del tallo (mm, peso seco total, peso seco de raíz y parte aérea. Se evaluaron seis tratamientos, bajo un diseño estadístico de bloques completos al azar, de la forma siguiente: fertilización de síntesis química completa (testigo (FSQC, FSQC más fertilización orgánica (FSQC + O, FSQC + O más biofertilización 1 (solubilizador de fósforo con base en Penicillium janthinellum (1x10(7conidias/ml, FSQC + O más micorrizas (FSQC + O + M, FSQC + O más biofertilización 2 (fijador de nitrógeno con base en Azotobacter chroococcum (1x10(8 UFC/ml y Azospirillun sp. (1x10(8 UFC/ml, FSQC + O más biofertilización 3 (fijador de nitrógeno con base en Azotobacter chroococcum (1x10(8 UFC/ml. El experimento se instaló sobre un Typic Hapludolls. El análisis de resultados mostró que, en todos los tratamientos la fertilización de síntesis química + orgánica + micorrizas presentó los mejores resultados (P This study was realised with the purpose of to evaluate the effect of the chemical, organic fertilization and biofertilization on the nutrition and yield of the red pepper (Capsicum spp. in the Valley of the Cauca in the initial production of plants in breeding ground and final production in field. Two experiments were realized, one in stage of fish-pond and other one in field stage. In fish-pond an experiment was realized where there was evaluated the effect of the different types of fertilization in chili and other one where there was evaluated the effect of the chemical, organic fertilization and biofertilización in chili. In field there was evaluated the effect of the

  13. Incidence of the phenomena El Nino and The Nina, on the climatic conditions in the valley of the River Cauca. Part I - climatological Analysis

    International Nuclear Information System (INIS)

    The influence of the phenomena known as El Nino and La Nina on the climatic conditions in the Cauca Valley (South-western Colombia) was studied by means of the analysis of climatic variability caused by these phenomena. Data were analysed from three weather stations located in the sugarcane area of influence, recorded during the 1972-1998 period. It was found that when these events are present in the Tropical Pacific Ocean, the behaviour of some climatic variables in the Cauca Valley is altered. These anomalies, which are of different magnitude for the different climatic variables, tend to be opposite in nature. The incidence of these phenomena on the Cauca Valley climate is noticeable in certain seasons and months

  14. Hydrogeological study with emphasis on hydrochemistry of aquifers in the southern department of Valle del Cauca (Colombia)

    International Nuclear Information System (INIS)

    The studied area is located in the south-west of Colombia in the Cauca Valley's Province between the Western and Central Andean Cordilleras. The climatology is of intermountain high plain type (T annual= 24 deg C, P=1400 mm/y). The Quaternary deposits form a multilayer aquifer. The upper level, A, and the lower level, C, are separated by a clay layer B. This layer clearly differentiated in the area of the Cauca River. The layers A and B are composed of alluvial deposits from the Cauca River and other tributaries. The estimated annual recharge is about 270 Mm3 and takes place in the highest part of the alluvial cone and through the fault system which is standing in the Western and Central Cordilleras. The regional water flow is East-West, within the Cauca River direction. The chemical results show a difference between the aquifer levels. Level C is characterized by the substitution of Ca2+ by Na+ (ion exchange) through the layer clay, B, and by higher chloride values in relation to the Tertiary deposits located under the alluvial deposit. It also shows higher residence time of groundwater. The stable isotope composition of groundwater in both aquifers is similar. The residence time, calculated using 14C and tritium, is younger in the level A with ages younger than 50 years. (author)

  15. Variación morfológica de tres especies de curubas (Passiflora tripartita var. mollissima, P. tarminiana y P. mixta y sus híbridos en el Valle del Cauca (Colombia Morphological variation of three banana passion fruit species (Passiflora tripartita var. mollissima, P. tarminiana and P. mixta and their hybrids in the Cauca Valley (Colombia

    Directory of Open Access Journals (Sweden)

    Sophie Primot

    2005-12-01

    Full Text Available Se estudió la variación morfológica entre ocho accesiones de las tres principales especies de curubas cultivadas y silvestres del Valle del Cauca, Passiflora tripartita var. mollissima (curuba de Castilla, Passiflora tarminiana (curuba india y Passiflora mixta (curuba de monte y 11 de sus híbridos, usando el análisis de componentes principales y el método de clasificación del vecino más próximo en 105 caracteres cualitativos y cuantitativos. Siete componentes principales explican 84% de la varianza total. Las clasificaciones sobre los caracteres cualitativos y cuantitativos muestran una clara agrupación por especie. Dentro de P. mixta, se distinguen un tipo poco pubescente, representativo de las plantas silvestres más comunes, y un tipo muy pubescente, con caracteres de domesticación como frutos amarillentos de pulpa colorida, y con una mayor variación morfológica. La clasificación de estos últimos individuos sugiere una introgresión entre P. mixta y Passiflora tripartita var. mollissima. Los híbridos ocupan una posición intermedia entre las especies parentales, pero se diferencian claramente según la dirección del cruzamiento, revelando un efecto maternal sobre la herencia de los caracteres vegetativos y florales. Los primeros análisis del fruto muestran características intermedias en cuanto a forma, color y tolerancia a la antracnosis.Morphological variation was studied in eight accessions from the three most common cultivated and wild species of banana passion fruit in the Cauca Valley, Passiflora tripartita var. mollissima (curuba de Castilla, P. tarminiana (curuba india and P. mixta (curuba de monte, and 11 of their hybrids, using the principal component analysis and neighbor joining cluster analysis on 105 qualitative and quantitative traits. The seven principal components explain 84% of the total variance. The principal component and cluster analyses clearly show the groups accessions by species. Two subgroups are

  16. DISTRIBUCIÓN ESPACIAL DEL BOSQUE SECO TROPICAL EN EL VALLE DEL CAUCA, COLOMBIA

    Directory of Open Access Journals (Sweden)

    Diana Patricia ALVARADO-SOLANO

    2015-07-01

    Full Text Available En el departamento del Valle del Cauca, la distribución de Bosque Seco Tropical (BsT se ha asociado al valle geográfico del río Cauca ubicado en la zona plana. Actualmente en esta zona, su cobertura se ha reducido a pocos relictos que se encuentran bajo alguna figura de conservación y mantienen áreas representativas de las formaciones vegetales típicas de este bioma. Este trabajo se enfocó en el reconocimiento de la distribución espacial de formaciones vegetales de BsT en el departamento del Valle del Cauca. Se empleó información cartográfica secundaria para reconocer los biomas, ecosistemas y usos del suelo del área de estudio y en zonas adyacentes del piedemonte y montañas. Un modelo digital de elevaciones fue utilizado para realizar análisis altitudinales. En un sistema de información geográfico se aplicaron técnicas de geoprocesamiento y análisis geoespacial entre la información cartográfica y satelital. Los resultados evidencian que pese al avanzado deterioro de las coberturas de bosque seco en la zona plana, alrededor del 80 % se localiza en ecosistemas de montaña, específicamente en zonas de transición hacia bosques húmedos.  A futuro, el potencial de estas áreas deberá evaluarse en para ser incluidas estrategias de conservación y restauración del bosque seco así como en el diseño de procesos adaptativos frente al cambio climático.Spatial Distribution of Tropical Dry Forest in Valle Del Cauca, ColombiaThe distribution of tropical dry forest in the department of Valle del Cauca, has been associated with the geographic Cauca valley. Currently in this area, dry forest coverages has been reduced to a few relicts, which are found under some protection figure and also hold representative areas of the typical vegetation of this biome. This work is focused on the spatial distribution of BsT vegetation formations in the Department of Valle del Cauca. Secondary cartographic information was used to recognize biomes

  17. Reconocimiento de hongos con potencial benéfico asociados a la rizósfera de chontaduro (Bactris gasipaes H.B.K. en la región Pacífico del Valle del Cauca, Colombia Recognition of potential beneficial fungi associated with rhizosphere of chontaduro (Bactris gasipaes H.B.K. in the Pacific, Cauca Valley, Colombia

    Directory of Open Access Journals (Sweden)

    Donald Riascos-Ortiz

    2011-12-01

    Full Text Available El chontaduro o pejibaye (Bactris gasipaes H.B.K es el principal cultivo de los agroecosistemas de la selva húmeda tropical de la costa pacífica colombiana. Esta región no aparece referenciada en la literatura científica a pesar de su alta biodiversidad e importancia agroecológica. El objetivo de este estudio fue aislar y caracterizar morfológicamente hasta género, hongos presentes en la rizósfera de B. gasipaes en dos sistemas de producción diferentes, localizados en Citronela y Sabaletas, Valle del Cauca, Colombia. Durante seis meses se tomaron muestras de raíces y suelo rizosférico en tres épocas con distinta precipitación pluvial. Se planteó como hipótesis que el tamaño y diversidad de la población de hongos son influenciados negativamente por la precipitación, ya que esta es la variable climática preponderante en la región del estudio. Los resultados mostraron que en la localidad de Citronela las poblaciones de hongos permanecieron estables durante los dos primeros muestreos, independiente de los cambios ocurridos en el régimen de lluvias entre épocas. En Sabaletas, durante estos mismos periodos, los registros de lluvias fueron más altos, lo que pudo generar condiciones anaerobias en la rizósfera y limitar la expresión poblacional fúngica. Para el tercer muestreo, en ambas localidades aumentó la población y diversidad de géneros de hongos, lo que coincide con la época de alta precipitación pluvial y llenado de frutos en las palmas, condiciones que aparentemente favorecen la liberación de exudados en las raíces y consecuentemente el desarrollo de las poblaciones microbianas benéficas de la rizósfera. Los géneros de hongos aislados en este estudio fueron: Trichoderma en ambas localidades, Fusarium y Rhizopus sólo en Citronela, Penicillium y Thielaviopsis sólo en Sabaletas. Estos microorganismos fungosos podrían presentar potencial benéfico para ser utilizados en programas de manejo integrado dentro del

  18. Riesgos laborales en trabajadores del sector informal del Cauca, Colombia

    OpenAIRE

    Augusto Muñoz-Caicedo; Pilar Mirely Chois-Lenis

    2014-01-01

    Antecedentes. Un estudio a nivel nacional permitió establecer los riesgos a los cuales estaban expuestos los trabajadores del sector informal del comercio. Sin embargo, no fue incluido el Departamento del Cauca. Objetivo. Describirlos riesgos laborales de las personas ocupadas en el sector informal del comercio, en cinco municipios del departamento del Cauca, durante el 2011. Materiales y métodos. Estudio descriptivo, transversal, desarrollado con 223 sujetos a quienes se les aplicó una encue...

  19. Algunas creencias sobre susceptibilidad y severidad de la caries en adolescentes del Valle del Cauca, Colombia

    OpenAIRE

    Jorge Eduardo Tascón; Gustavo Alonso Cabrera

    2005-01-01

    Objetivo: Conocer las creencias que sobre susceptibilidad y severidad de la caries dental tienen los adolescentes escolarizados del departamento del Valle del Cauca, Colombia. Método: Se usó el Modelo de Creencias en Salud como eje teórico y metodológico en un estudio descriptivo y transversal en 38 de 42 municipios del departamento del Valle del Cauca. Se seleccionó una muestra de 5.400 adolescentes entre 10 y 20 años por muestreo probabilístico, trietápico, estratificado, de conglomerados ...

  20. Algunas creencias sobre susceptibilidad y severidad de la caries en adolescentes del Valle del Cauca, Colombia.

    OpenAIRE

    Jorge Eduardo Tascón; Gustavo Alonso Cabrera

    2009-01-01

    Objetivo: Conocer las creencias que sobre susceptibilidad y severidad de la caries dental tienen los adolescentes escolarizados del departamento del Valle del Cauca, Colombia. Método: Se usó el Modelo de Creencias en Salud como eje teórico y metodológico en un estudio descriptivo y transversal en 38 de 42 municipios del departamento del Valle del Cauca. Se seleccionó una muestra de 5.400 adolescentes entre 10 y 20 años por muestreo probabilístico, trietápico, estratificado, de conglomerados e...

  1. Aves de la costa del pacífico, municipio de guapi, cauca, colombia, i

    OpenAIRE

    Olivares, Antonio

    2012-01-01

    Las aves estudiadas en este trabajo las coleccioné en el Municipio de Guapi, Cauca, Colombia, durante el tiempo comprendido entre el 21 de noviembre de 1955 y el 19 de enero de 1956.  El Municipio está situado en el extremo suroeste del Departamento del Cauca. entre los 20 11' y 20 40' de latitud norte y los 770 10' y 78" (aprox.) de longitud occidental de Greenwich. Limita al norte con Timbiquí, al oriente con el Tambo, al sur y occidente con el Departamento de Nariño y al noroeste lo baña e...

  2. Variación morfológica de tres especies de curubas (Passiflora tripartita var. mollissima, P. tarminiana y P. mixta) y sus híbridos en el Valle del Cauca (Colombia) Morphological variation of three banana passion fruit species (Passiflora tripartita var. mollissima, P. tarminiana and P. mixta) and their hybrids in the Cauca Valley (Colombia)

    OpenAIRE

    Sophie Primot; Geo Coppens d'Eeckenbrugge; Vincent Rioux; John Albeiro Ocampo Pérez; François Garcin

    2005-01-01

    Se estudió la variación morfológica entre ocho accesiones de las tres principales especies de curubas cultivadas y silvestres del Valle del Cauca, Passiflora tripartita var. mollissima (curuba de Castilla), Passiflora tarminiana (curuba india) y Passiflora mixta (curuba de monte) y 11 de sus híbridos, usando el análisis de componentes principales y el método de clasificación del vecino más próximo en 105 caracteres cualitativos y cuantitativos. Siete componentes principales explican 84% de la...

  3. Nuevos registros de flebotominos (Diptera: Psychodidae y triatominos (Hemiptera:Reduviidae para Risaralda, Cauca y Valle del Cauca,Colombia.

    Directory of Open Access Journals (Sweden)

    Mauricio Barreto

    2009-10-01

    Full Text Available Los flebotominos y los triatominos son insectos hematófagos. Buena parte de los primeros transmiten leishmaniasis y los segundos la enfermedad de Chagas o tripanosomiasis americana. Con técnicas como trampas de luz, cebo humano, red entomológica, y búsqueda en sitios de reposo, se capturaron flebotominos y triatominos en 12 localidades rurales colombianas (de las que se dan las alturas sobre el nivel del mar y sus formaciones ecológicas de los siguientes departamentos: Cauca (municipios: Guapi, Popayán; Risaralda (Guática, La Virginia, Pereira, Pueblo Rico; y Valle del Cauca (Buenaventura, Cali, Calima o Darién. Sólo en Cali las capturas se hicieron en la zona urbana. Se colectaron 21 especies o subespecies de flebotominos y dos de triatominos. Tanto de los unos como de los otros se establecen nuevos registros que amplían la distribución geográfica de estos insectos en Colombia. Se discuten sus relaciones en la transmisión de enfermedades.

  4. Quantification and economic valuation of the capture of CO2 for plantations of the Eucalyptus, genus, settled down by the PRECA in the carboniferous basins of Cesar, Cauca Valley, Cauca and Cundiboyacense Highland

    International Nuclear Information System (INIS)

    In this study, the first measure is to quantify the tons of CO2 captured by the increment in the biomass of forest plantations of the Eucalyptus genus, settled down by the PRECA of Ecocarbon in the carboniferous basins of the Cesar, Cauca Valley, Cauca and Cundiboyacense highland and in second measure to determine the economic value that the sale of this environmental service can represent for a developing country as Colombia. The results obtained for each one of the plantations settled down in each carboniferous basin are determined and statistical models that will allow to calculate the capture of CO2 carried out by plantations of three different species of Eucalyptus (E. Camaldulensis, E. grandis and E. globulus)

  5. Quantification and economic valuation of the capture of CO2 for Eucalyptus plantations, established by the Preca in the carboniferous Basins of Cesar, Cauca Valley, Cauca and Highland Cundiboyacense

    International Nuclear Information System (INIS)

    This study, as first measure it looks for to quantify the tons of CO2 captured by the increment in the biomass of forestall plantations of the Eucalyptus genus established by the PRECA of Ecocarbon in the carboniferous basins of the Cesar, Cauca Valley, Cauca and Highland Cundiboyacense and in second measure to determine the economic value that the sale of this environmental service can represent for a developing country as Colombia. The results obtained for each one of the plantations in each carboniferous basin are determined, and statistical models that will allow calculating the capture of CO2 carried out by plantations of three different species of Eucalyptus (E. camaldulensis, e. grandis and E. globulus), starting from the volume in foot of the timber only barked

  6. Incidence of the phenomena El Nino and The Nina, on the climatic conditions in the valley of the River Cauca. Part II - Analysis of correlations

    International Nuclear Information System (INIS)

    In this research we seeked to evaluate the influence of the phenomena El Nino and La Nina on the climate regime in the Cauca Valley (south-western Colombia). Correlation analysis between climatic variables and ENSO external parameters was used. 11 climate variables of three weather stations and 14 external parameters, recorded during the 1972 -1998 period, were used in this investigation. The highest correlations were found using statistical artifices. These correlations show a strong dependence of the climatic variables during El Nino and La Nina events. In order to determine the seasons more affected, lineal correlations were calculated, particularly on a decadal, monthly and seasonal basis. These analyses show that the incidence of these phenomena on the Cauca Valley climate is very noticeable particularly in certain seasons, months and decades

  7. Salud, trabajo e informalidad en el Cauca, Colombia

    OpenAIRE

    Augusto Muñoz C; Pilar M. Chois

    2013-01-01

    Objetivo: describir las condiciones de salud y trabajo de las personas ocupadas en el sector informal del comercio, en cinco municipios del departamento del Cauca, durante el año 2011. Metodología: estudio descriptivo, transversal, desarrollado con 223 sujetos a quienes se les aplicó una encuesta estandarizada a nivel nacional. Resultados: la mayoría (80%) de la población está asegurada en salud, pero no a pensiones ni a riesgos profesionales. Más del 70% tiene acceso a telefonía celular, acu...

  8. EVALUACIÓN DE ALTERNATIVAS PARA CLIMATIZACIÓN DE ESTANQUES CON ENERGÍA SOLAR PARA CULTIVO DE TILAPIA ROJA (Oreochromis sp, LOCALIZADOS EN LA ZONA FRÍA DEL VALLE DEL CAUCA, COLOMBIA EVALUATION OF ALTERNATIVES FOR AIR CONDITIONING OF PONDS WITH SOLAR ENERGY FOR CULTIVATION OF RED TILAPIA (Oreochromis sp, LOCATED IN THE COLD AREA OF THE CAUCA VALLEY, COLOMBIA

    Directory of Open Access Journals (Sweden)

    Francisco Javier Borja Gallardo

    2006-06-01

    Full Text Available La investigación fue desarrollada para que la tilapia roja (Oreochromis sp, especie de pez mÁs producida en Colombia, pueda ser explotada en lugares donde las condiciones óptimas para su normal desarrollo no son las adecuadas, como son las regiones altas con temperaturas por debajo de los 24 °C, aplicando metodologías relacionadas con el aprovechamiento de la energía solar. Las técnicas evaluadas fueron: climatización por medio de colectores solares, climatización por medio de manta térmica, climatización por medio de mangueras térmicas y climatización por medio de resistencias eléctricas. Se analizaron factores como funcionalidad, mantenimiento, limitaciones organizativas, espaciales, y costos.The research was developed so that the red tilapia (Oreochromis sp, fish species that more taken place in Colombia can be exploited in regions where the good conditions for its normal development are not the appropriate ones as in the high regions with temperatures below the 24 °C, applying methodologies related with the use of the solar energy. The evaluated methodologies were: air conditioning by means of solar collectors, air conditioning by means of thermal blanket, air conditioning by means of thermal hoses and air conditioning by means of electric resistances. Factors like functionality, maintenance, organizational and space limitations, and costs were analized.

  9. Riesgos laborales en trabajadores del sector informal del Cauca, Colombia

    Directory of Open Access Journals (Sweden)

    Augusto Muñoz-Caicedo

    2014-07-01

    Full Text Available Antecedentes. Un estudio a nivel nacional permitió establecer los riesgos a los cuales estaban expuestos los trabajadores del sector informal del comercio. Sin embargo, no fue incluido el Departamento del Cauca. Objetivo. Describirlos riesgos laborales de las personas ocupadas en el sector informal del comercio, en cinco municipios del departamento del Cauca, durante el 2011. Materiales y métodos. Estudio descriptivo, transversal, desarrollado con 223 sujetos a quienes se les aplicó una encuesta estandarizada a nivel nacional. Resultados. Más del 20% de los taxistas y lecheros están expuestos a riesgos de seguridad, mientras que aproximadamente 1 de cada 4 vendedores ambulantes, carretilleros y vendedores de alimentos, están expuestos a riesgos ambientales. El grupo de mayor exposición a los riesgos sanitarios y a carga física son los carretilleros; más del 50% de estos, de vendedores de minutos y de vendedores ambulantes están expuestos a riesgos locativos. Además, aproximadamente 1 de cada 4 vendedores ambulantes y vendedores de alimentos están expuestos a riesgos de orden público. Conclusiones. Los riesgos laborales a los cuales están expuestos los trabajadores del sector informal del comercio no coinciden con los encontrados por un estudio desarrollado a nivel nacional. Por otro lado, la poca organización dentro de los grupos de trabajadores y la falta de políticas públicas pueden desencadenar aumento en la morbimortalidad de esta población.

  10. Determinación del requerimiento hídrico del pimentón en el municipio de Candelaria, departamento del Valle del Cauca Water requeriments of pepper in Candelaria, Valle del Cauca, Colombia

    Directory of Open Access Journals (Sweden)

    Adriana Gómez Enríquez

    2010-10-01

    Full Text Available Se realizó un ensayo con el fin de determinar el requerimiento hídrico del pimentón Capsicum annuum variedad Unapal-Serrano, en la zona de Candelaria-Valle del Cauca (Colombia. Se determinó que el pimentón requiere 425mm de agua durante su ciclo vegetativo, obteniendo una eficiencia del uso del agua de 5.32 kg/m³ de fruto fresco y de 0.5 kg/m³ en términos de materia seca. Además, se comprobó la eficiencia del microevaporímetro 'MIEVHR' como herramienta para programación del riego y estudios hidrológicos.A trial was carried out in order to determining the water requirement of the pepper Capsicum annuum variety UNAPAL- Serrano in the zone of Candelaria -Valley of the Cauca (Colombia and to evaluate the efficiency of the microevaporímeter 'MIEVHR' as estimator of the evaporation. It was determined that the pepper requires 425mm of water during the cycle vegetative obtaining an efficiency of the use of the water of 5.32 Kg/m³ of fresh fruit and 0.5 kg/m³ in terms of dry matter. Besides, it was verified the microevaporímeter efficiency 'MIEVHR' as tool for programming of the irrigation.

  11. Salud, trabajo e informalidad en el Cauca, Colombia

    Directory of Open Access Journals (Sweden)

    Augusto Muñoz C

    2013-03-01

    Full Text Available Objetivo: describir las condiciones de salud y trabajo de las personas ocupadas en el sector informal del comercio, en cinco municipios del departamento del Cauca, durante el año 2011. Metodología: estudio descriptivo, transversal, desarrollado con 223 sujetos a quienes se les aplicó una encuesta estandarizada a nivel nacional. Resultados: la mayoría (80% de la población está asegurada en salud, pero no a pensiones ni a riesgos profesionales. Más del 70% tiene acceso a telefonía celular, acueducto y energía, pero baja cobertura del servicio de gas y alcantarillado. El 60% manifestó tener una buena salud y más del 50% percibió su lugar de trabajo como un lugar seguro para trabajar. El grupo que mejor se siente con el trabajo que realiza es el de vendedores de leche (92,3%. Discusión: los resultados obtenidos en cuanto al sexo, edad, estado civil y nivel educativo, entre otros, coinciden con los arrojados por un estudio desarrollado a nivel nacional con la misma población. Se encontró que en los municipios incluidos en este estudio no se ha promovido la conformación de Grupos Organizados de Trabajadores Informales, lo cual puede impedir su organización y la mejoría de sus condiciones

  12. Hyphessobrycon ocasoensis sp. n. (Teleostei, Characidae una nueva especie para el Alto Cauca, Colombia

    Directory of Open Access Journals (Sweden)

    García-Alzate, C. A.

    2008-12-01

    Full Text Available Hyphessobrycon ocasoensis n. sp. (Teleostei, Characidae a new species from the Alto Cauca, Colombia Hyphessobrycon ocasoensis n. sp. (Characiformes, Characidae from heterorhabdus group (Gery, 1977 is described from the upper Cauca River in Colombia. The new species is distinguished from all other known species by the following combination of characters: three unbranched and eight branched fins in the dorsal fin; short maxillary bone with one or no teeth; four small foramens in the maxillary bone, and five in the premaxillary; 5-17 scales with pores in the lateral line, six between the lateral line and anal-fin origin, six between the lateral line and pelvic-fin origin, and nine predorsals; depth of the caudal peduncle has a mean of 16.7% in standard length; interorbital width 50.6% in head; a dark spot on caudal peduncle and a dark lateral band that extends vertically from the dorsal–fin origin to the tips of the middle caudal fin rays. Physical and chemical data of their habitat are included.

  13. Algunas creencias sobre susceptibilidad y severidad de la caries en adolescentes del Valle del Cauca, Colombia.

    Directory of Open Access Journals (Sweden)

    Jorge Eduardo Tascón

    2009-11-01

    Full Text Available Objetivo: Conocer las creencias que sobre susceptibilidad y severidad de la caries dental tienen los adolescentes escolarizados del departamento del Valle del Cauca, Colombia. Método: Se usó el Modelo de Creencias en Salud como eje teórico y metodológico en un estudio descriptivo y transversal en 38 de 42 municipios del departamento del Valle del Cauca. Se seleccionó una muestra de 5.400 adolescentes entre 10 y 20 años por muestreo probabilístico, trietápico, estratificado, de conglomerados en la población escolar de colegios oficiales y privados. Resultados: Del total de adolescentes 51% no cree que la caries produce cambios en la masticación; 52% de los participantes no cree que le puede dar caries de nuevo, una vez hayan sido obturados o «calzados» sus dientes y 54% no relaciona la caries con cambios en la digestión; 80% no relaciona el uso de «brackets» y retenedores con la enfermedad; 92% cree que la caries le puede dar a cualquier persona y 91% cree que la caries puede hacerle perder los dientes. Conclusiones: Las creencias sobre la severidad de la caries son en general favorables; las creencias con respecto a susceptibilidad deben ser mejoradas por medio de estrategias de intervención preventivas dirigidas a este grupo poblacional.

  14. Algunas creencias sobre susceptibilidad y severidad de la caries en adolescentes del Valle del Cauca, Colombia

    Directory of Open Access Journals (Sweden)

    Jorge Eduardo Tascón

    2005-09-01

    Full Text Available Objetivo: Conocer las creencias que sobre susceptibilidad y severidad de la caries dental tienen los adolescentes escolarizados del departamento del Valle del Cauca, Colombia. Método: Se usó el Modelo de Creencias en Salud como eje teórico y metodológico en un estudio descriptivo y transversal en 38 de 42 municipios del departamento del Valle del Cauca. Se seleccionó una muestra de 5.400 adolescentes entre 10 y 20 años por muestreo probabilístico, trietápico, estratificado, de conglomerados en la población escolar de colegios oficiales y privados. Resultados: Del total de adolescentes 51% no cree que la caries produce cambios en la masticación; 52% de los participantes no cree que le puede dar caries de nuevo, una vez hayan sido obturados o «calzados» sus dientes y 54% no relaciona la caries con cambios en la digestión; 80% no relaciona el uso de «brackets» y retenedores con la enfermedad; 92% cree que la caries le puede dar a cualquier persona y 91% cree que la caries puede hacerle perder los dientes. Conclusiones: Las creencias sobre la severidad de la caries son en general favorables; las creencias con respecto a susceptibilidad deben ser mejoradas por medio de estrategias de intervención preventivas dirigidas a este grupo poblacional.

  15. Integrated ecological modelling for decision support in river management: a lowland river case study (Cauca river in Colombia)

    OpenAIRE

    Holguin Gonzalez, Javier; Goethals, Peter; Galvis, Alberto

    2010-01-01

    Several practical concepts and software systems have been recently developed in the issue of environmental decision support. However, the application of ecological modelling approaches that integrate hydrodynamic, physical-chemical, and biological components sub-models for predicting macroinvertebrates in rivers, is rather limited and hardly described in literature. The Cauca river is one of most severe cases of contamination for domestic and industrial wastewater discharges in Colombia. One ...

  16. Determination of reliable environmental flows in Colombia: The example of the River Palace (Cauca)

    International Nuclear Information System (INIS)

    The increasing exploitation of the water resources in Colombia requires an advanced Environmental Flows Regime (EFR) regulation, for a properly design of the Watershed Planning and Management Programs. Among the diversity of approaches proposed to EFR assessment, the most used and scientifically accepted is the well-known Instream Flow Incremental Methodology (IFIM), whose applicability for Colombian rivers is explored in this study. The IFIM modeling of the Palace River below the diversion of 500 l/s to the new water-supply facilities in Popayan (Cauca) reveals that the global effect of this limited derivation of the 6.78% mean annual flow in the integrity of the aquatic ecosystem is very low. The eco-hydraulic and eco hydrological simulations of the representative reach (500m length, 18m width, 500/00 slope and coarse substrate) analyzed with the software RHABSIM 3.0, revealed some not very significant reductions of the usable habitat for adult fishes and macro-invertebrates. Consequently, the present instream flows regime of the Palace River caused by the diversion project is corroborated as a satisfactory EFR, according to the IFIM evaluation system. Finally, some research lines are suggested, that are focused to the improvement and adaptation of the IFIM to the particular fluvial conditions of Colombia

  17. Evaluación de la calidad de agua del Río Grande (Caloto, Cauca-Colombia)

    OpenAIRE

    Chará Ana M.; Hernández Angélica

    2005-01-01

    Se evaluó la calidad del agua del río Grande (Caloto, Cauca, Colombia), con el fin de determinar el impacto que tiene la actividad humana sobre estas aguas, utilizando el índice BMWP ajustado para Colombia (BMWP/Col). Se realizaron muestreos de macroinvertebrados con redes D,
    Surber y de Pantalla, y pruebas físico-químicas (concentración de fósforo, fosfatos, ortofosfato y nitratos) en dos estaciones diferentes del río. En la primera estación (en el pueblo), se encontró que la cali...

  18. Evaluation of propagation methods, nitrogen fertilization and phenology in stevia in the Cauca Valley, Colombia Evaluación de métodos de propagación, fertilización nitrogenada y fenología de estevia en condiciones del Valle del Cauca

    OpenAIRE

    Bonilla Correa Carmen Rosa; Sánchez Manuel Salvador; Perlaza Diego Fernando

    2007-01-01

    This research was carried out at the Experimental Center of the National University of Colombia (Palmira) in order to know more about the cropping system of Stevia rebaudiana Bertoni. The research consisted of an evaluation of rooting process and growth of cuttings from basal and apical position of the stem. The results were obtained from three root sustrates (coal ship-sand, coal ship-compost and sand-compost) and t...

  19. Evaluación de métodos de propagación, fertilización nitrogenada y fenología de estevia en condiciones del Valle del Cauca Evaluation of propagation methods, nitrogen fertilization and phenology in stevia in the Cauca Valley, Colombia

    Directory of Open Access Journals (Sweden)

    Carmen R Bonilla C

    Full Text Available En el Centro Experimental de la Universidad Nacional de Colombia sede Palmira se evaluó el prendimiento de estacas apicales y basales de Stevia rebaudiana en tres sustratos de enraizamiento (carbonilla-arena, carbonilla-compost y arena-compost y tres fuentes de nitrógeno (urea 46%N, compost 1.5%N y gallinaza 1% N. El mejor método de propagación fue la estaca apical en sustrato carbonilla-arena 1:1, volumen; las fuentes de nitrógeno no presentaron diferencias significativas en la acumulación de materia seca de hojas. Se diferenciaron los siguientes periodos fenológicos: Emergencia: 6 días después de la siembra (dís, Estado vegetativo: 17 dias, Floración: 71 dís, Fructificación: 115 dís, Senescencia: 169 dís y Rebrote: 201 dísThis research was carried out at the Experimental Center of the National University of Colombia ( Palmira in order to know more about the cropping system of Stevia rebaudiana Bertoni. The research consisted of an evaluation of rooting process and growth of cuttings from basal and apical position of the stem. The results were obtained from three root sustrates (coal ship-sand, coal ship-compost and sand-compost and three different nitrogen sources (urea 46%N, compost 1.5% N and chicken manure 1% N. The results showed that the most productive sustrate was coal ship-sand 1:1 volume. The application of the nitrogen sources had no significant differences in accumulation of leaf dry matter. Phenological observation were as follows: emergence: 6 days after sowing (das, vegetative state: 17 das, flowering: 71 das, fructificatión: 115 das, senility: 169 das and shoot: 201 dís.

  20. Resisting poverty : perspectives on participation and social development. The case of CRIC and the eastern rural region of Cauca in Colombia

    OpenAIRE

    Berglund, Staffan

    1982-01-01

    With the reproduction of severe deprivation among the campesinado in Latin America as a starting-point,the report explores the mechanisms of impoverishment in the eastern rural region of the department of Cauca in Colombia and the forms of resistance initiated by the Regional Indigenous Council of Cauca (CRIC). It is postulated that the continued existence of poverty derives its root-causes not from lacking integration of the traditional sector of the national economy into the modern sector, ...

  1. Evaluation of propagation methods, nitrogen fertilization and phenology in stevia in the Cauca Valley, Colombia Evaluación de métodos de propagación, fertilización nitrogenada y fenología de estevia en condiciones del Valle del Cauca

    Directory of Open Access Journals (Sweden)

    Bonilla Correa Carmen Rosa

    2007-09-01

    Full Text Available This research was carried out at the Experimental Center of the National University of Colombia (Palmira in order to know more about the cropping system of Stevia rebaudiana Bertoni. The research consisted of an evaluation of rooting process and growth of cuttings from basal and apical position of the stem. The results were obtained from three root sustrates (coal ship-sand, coal ship-compost and sand-compost and three different nitrogen sources (urea 46%N, compost 1.5% N and chicken manure 1% N. The results showed that the most productive sustrate was coal ship-sand 1:1 volume. The application of the nitrogen sources had no significant differences in accumulation of leaf dry matter. Phenological observation were as follows: emergence: 6 days after sowing (das, vegetative state: 17 das, flowering: 71 das, fructificatión: 115 das, senility: 169 das and shoot: 201 dísEn el Centro Experimental de la Universidad Nacional de Colombia sede Palmira se evaluó el prendimiento de estacas apicales y basales de Stevia rebaudiana en tres sustratos de enraizamiento (carbonilla-arena, carbonilla-compost y arena-compost y tres fuentes de nitrógeno (urea 46%N, compost 1.5%N y gallinaza 1% N. El mejor método de propagación fue la estaca apical en sustrato carbonilla-arena 1:1, volumen; las fuentes de nitrógeno no presentaron diferencias significativas en la acumulación de materia seca de hojas. Se diferenciaron los siguientes periodos fenológicos: Emergencia: 6 días después de la siembra (dís, Estado vegetativo: 17 dias, Floración: 71 dís, Fructificación: 115 dís, Senescencia: 169 dís y Rebrote: 201 dís

  2. Determinantes del trabajo infantil y la escolaridad: el caso del Valle del Cauca en Colombia

    Directory of Open Access Journals (Sweden)

    Sebastián Urueña Abadía

    2009-10-01

    Full Text Available Colombia, al igual que la mayoría de países latinoamericanos, consciente de las repercusiones sociales y económicas negativas del trabajo infantil, se ha comprometido en la lucha por la erradicación de este fenómeno. Prueba de ello es la ratificación por parte del gobierno colombiano en el año 2007, del Convenio 182 de la OIT sobre la Prohibición de las Peores Formas de Trabajo Infantil y la Acción Inmediata para su Eliminación. En el plano regional, como parte del Plan de Desarrollo del Departamento del Valle del Cauca 2008-2011, se está implementando actualmente una estrategia territorial de erradicación del trabajo infantil en sus 42 municipios. Considerando este panorama, este trabajo indaga cuáles son los determinantes del trabajo infantil y la escolaridad en el departamento del Valle a partir de los datos de la Encuesta Nacional de Calidad de Vida del año 2003. Para el análisis se emplea un modelo econométrico Probit Bivariado, que permite el estudio conjunto e interrelacionado de decisiones diferentes, en este caso la asistencia escolar y el trabajo.

  3. Trends into rainfall time series of two andes basins of Valle del Cauca (Colombia

    Directory of Open Access Journals (Sweden)

    Faisury Cardona-Guerrero

    2014-01-01

    Full Text Available With the goal of detecting changes or trends in registered data of daily rainfall in the basins of rivers Dagua and Cali, located in the south-west of Colombia, in the Valle del Cauca, nine climate extremes indices were calculated using the RClimDex software. For this, precipitation trends were analyzed in 18 rain gauges located in the study area with historical series ranging between 21 and 56 years. Homogeneity tests were made to data to ensure consistency in the information. The results show changes in rainfall, dominated by the increasing trends for almost all indices; however most of the trends do not show high statistical significance. Also, a significant increase in the average annual total rainfall of 15.2 mm (Dagua river basin and 9.1 mm (Cali river basin in the stations located below 1500 msnm was obtained. Moreover, in the stations located at higher elevations, decreases were observed. There is a homogeneous spatial distribution for the most of the indices and similar patterns were found located in defined areas of the study zone, which may affect the runoff production in watersheds in the coming years.

  4. Bandolerismo rural en el Bajo Cauca, Magdalena Medio y el Nordeste antioqueño (Colombia), 1953-1958

    OpenAIRE

    Diana Henao Holguín

    2015-01-01

    Este artículo busca contribuir a la discusión sobre el fenómeno del bandolerismo rural desde una perspectiva regional. Explora las zonas del Bajo Cauca, Magdalena Medio y Nordeste antioqueños en Colombia entre 1953 y 1958. En dichos años, el bandolero aparece en el escenario regional tras la descomposición de las guerrillas liberales de la primera fase de La Violencia (1949-1953). Así, adquiere características que difieren del modelo planteado por Eric Hobsbawm, quien propone el concepto band...

  5. Amphibia, Anura, Strabomantidae, Pristimantis permixtus Lynch, Ruiz-Carranza, and Ardila-Robayo, 1994: Distribution extension, Valle del Cauca, Colombia

    OpenAIRE

    Mendez-Narvaez, J.; Bolivar-G, W.; Castro-Herrera, F.

    2010-01-01

    Pristimantis permixtus is a moderate sized frog tipically of upper cloud forests and sub-páramo areas. Herewe provide the second record and southernmost of P. permixtus in the Occidental Cordillera in the department of Valle delCauca, Vereda Chicoral, municipality of La Cumbre, Colombia.

  6. Scale insects (Hemiptera: Coccoidea) associated with avocado crop, Persea americana Mill. (Lauraceae) in Valle del Cauca and neighboring departments of Colombia

    OpenAIRE

    Kondo, Takumasa; Muñoz, Jazmín Adriana

    2016-01-01

    Scale insects (Hemiptera: Coccoidea) of avocado, Persea americana Mill. (Lauraceae) were collected in the State of Valle del Cauca, Colombia. The study was conducted for one year, during October 2008–October 2009. As a result of this study, 34 scale insect species in seven families (Coccidae, Diaspididae, Kerriidae, Margarodidae, Monophlebidae, Pseudococcidae and Putoidae) were collected. Together with previous records, the number of scale insects collected on avocado in Colombia increa...

  7. Characterization of the coal of the Cauca Valley in the Swallows sector, Cali Municipality

    International Nuclear Information System (INIS)

    The study of the geologic, physical-chemical and petrography characteristics of the coal of the Cauca valley, are indispensable for the knowledge of the Colombian coal. For technical and logistical reasons the sector Cerro Golondrinas was chosen, near to the Cali city, where were taken samplings in many mines realizing analysis and interpretation of the results. The importance of the development of the pacific region in the industrial aspect it is excellent. Therefore, the best knowledge in its energy resources is basic for an appropriate use. It was possible to determine the presence of bituminous coal high volatile A, with a heating, dry power free of ashy (slcz), around 8.000 calories for gram, also, a content average of 6% of hydrogen with a relationship H/C (slcz) near to 8 x 102, that which gives to these coal the possibility of being used in gasification processes and liquefaction. The mill index shows an average of 46 corresponding to the range of coal of the area that which means that in the mill they should be kept in mind the conditions that require fairly hard coal. Even when there was not a mathematical correlation of the mill index with the ashes, the variability and the quantity of these last it is also an important parameter to keep in mind in the preparation of the coal. The same composition of the ashes is also variable in the whole area: of 75 samples of analyzed ashes, 56% is classified as bituminous and 44%, as lignite, in most of them was a deposition factor (slagging) low and an fouling factor, also low, that which indicates that these ashes don't present problems of accumulation of deposits in the combustion processes. The temperature of initial deformation in reducing atmosphere (itr) it reveals the presence of two populations, one with the maximum between 1.100 and 1.200 Celsius Degree and another with the maximum, superior to 1.500 Celsius Degree, fact that should be kept in mind for the correct use of the coal. One can say that the coal

  8. N2 fixer free-living bacteria in two soils of Cauca Valley

    International Nuclear Information System (INIS)

    Several soil samples were taken in two agricultural soils, located in Palmira and Ricaurte, Cauca Valley, with the aim of establishing the presence of free life N2 fixer bacteria and to identify the predominant species. Such soils were chemical and physically characterized and were collected information about their farmer management. For each one of them were counted the N2 a symbiotic fixers by the dilution method and culture in N free Ashby media. The main bacteria isolated in each soil were, purified and identified. The physical chemistry conditions in both soils favored the presence of such microorganisms because of the pH, closer to neutral and an adequate nutrient content in Ricaurte, the soils was an inceptisol, moderately deep and growing passion fruit Passiflora edulis sims, in which have had an intensive use of chemicals, similar to palmira's soil; there, the microbial population was 5.5 x 107 U.F.C. N2 fixer bacteria/g of dry soil. In Palmira, it was a mollisol growing tomato Lycopersicon esculentum mill with a population of 5.1 x 107 U.F.C./g of dry soil; both figures indicated the abundance of such microbiological resource and the potential for being explored in sustainable agricultural systems. In Ricaurte it was isolated Azotobacter is a main strain (probably a. chroococcum, according IMI) and in Palmira, Stenotroghomonas maltophilia (IMI), well known as a growth promoter in wheat and sunflower; referred in some cases as lightly pathogen in humans

  9. Estado de conservación de las poblaciones de tres palmas amenazadas del departamento del Valle del Cauca, Colombia

    Directory of Open Access Journals (Sweden)

    Galeano Gloria

    2007-04-01

    Full Text Available Se evaluó el estado de conservación de Attalea amygdalina, Aiphanes duquei y Bactris gasipaes var. chichagüi, tres
    palmas amenazadas del Valle del Cauca (Colombia, dentro del proyecto “Evaluación y conservación del departamento del Valle del Cauca, basada en principio de planeación sistemática de la conservación”. Para la evaluación, se determinó la distribución actual, las densidades, las estructuras de edad y se identificaron los factores de vulnerabilidad de las poblaciones. Para el caso de Aiphanes duquei se estudiaron 0,65 ha (11 parcelas donde se encontraron densidades bajas y una estructura de edad de una población en crecimiento. Se estimaron unos 250 individuos adultos ocupando solamente 15 ha. Para Attalea amygdalina se estudiaron 0,4 ha (cuatro parcelas y se encontraron poblaciones con densidades altas y estructuras de edad de poblaciones en crecimiento, pero todas en hábitats muy fragmentados, de menos de 4 ha; se estimaron unos 4.000 adultos en el Valle del Cauca. Por último, para Bactris gasipaes var. chichagüi se estudiaron 0,85 ha (10 parcelas donde se encontraron en general densidades bajas y estructuras de edad incompletas y de
    poblaciones decreciendo. De acuerdo a esta información se propusieron medidas de conservación in situ y ex situ para cada especie.

  10. DISTRIBUCIÓN ESPACIAL DEL BOSQUE SECO TROPICAL EN EL VALLE DEL CAUCA, COLOMBIA

    OpenAIRE

    Diana Patricia ALVARADO-SOLANO; Joel Tupac OTERO OSPINA

    2015-01-01

    En el departamento del Valle del Cauca, la distribución de Bosque Seco Tropical (BsT) se ha asociado al valle geográfico del río Cauca ubicado en la zona plana. Actualmente en esta zona, su cobertura se ha reducido a pocos relictos que se encuentran bajo alguna figura de conservación y mantienen áreas representativas de las formaciones vegetales típicas de este bioma. Este trabajo se enfocó en el reconocimiento de la distribución espacial de formaciones vegetales de BsT en el departamento del...

  11. The cultural analysis in the environmental impact studies. Jepirachi wind pilot project and connecting road between the Aburra valley and Cauca River

    International Nuclear Information System (INIS)

    This article is synthesis of the investigation to choose I in environment title of Master and Development of the National University of Host Colombia Medellin, on the speech, the social images and representations that emerge in the Studies from environmental Impact -EIA- from the cultural systems from communities affected by the implantation and operation. From two macro projects, that are part of the Plans of national Development, regional and local in Colombia: one, the Project Pilot of Generation of Aeolian Energy Jepirachi, in Colombian the Guajira discharge that affects indigenous communities of several establishments Wayuu in the sector of Average Moon. The other, the project of Road Connection between Valleys of the Aburra River - and the Cauca River, which it affects communities that inhabit an axis of rural transition - urban, whose cultural composition is diverse in its origin, mobility and interactions. It was left from two hypotheses: one, is that the analysis made in the cultural dimension of the EIA, is insufficient lo identify, lo evaluate and to handle the impacts on the cultural systems; second, front lo the treatment of the cultural systems is the existence of fundamental differences. There is cultural systems in Colombia which status is recognized greater and category than to others. The analysis of the speech allowed to obtain a diagnosis on semantic the rhetorical structure and - formal and textual cohesion, coherence, correlations and associations in the EIA and to identify the social images and representations that emerge on the populations taken part by the projects. Finally conclusions. That consider they leave to the debate on the cultural analyses that have been made in the EIA ,their emptiness and limitations and the different courses open that can take futures works from investigation

  12. Petroleum geochemistry of Middle Magdalena Valley, Colombia

    Energy Technology Data Exchange (ETDEWEB)

    Ramon, J.C. [HOCOL S.A., Bogota (Colombia); Dzou, L.I. [Amoco EPTG, Houston, TX (United States)

    1999-07-01

    Twenty-five crude oil samples from tertiary reservoirs in the Middle Magdalena Valley, Colombia, were studied by geochemical methods in order to understand their genetic relationships. The oils were probably derived from both calcareous and siliciclastic facies of the Upper Cretaceous La Luna Formation. Some oils in the eastern margin contain relatively higher concentrations of land plant derived biomarkers than the remaining oil samples. The molecular compositions of the oils observed in this study appear to be consistent with the inferred depositional sequence of anoxic marine/pelagic carbonate facies in the north and western sectors of the Middle Magdalena Valley, while the eastern sector received a higher proportion of clastic input. Biomarker maturity parameters indicate that most of the oils were generated from the early phase of the oil window, except for the Colorado-38 oil that was generated during the peak of the oil window. Geochemical data support ''local'' generation and migration of the Middle Magdalena oils as opposed to longer distance migration from the region of the eastern Cordillera. The range of oil gravities measured in the Middle Magdalena Valley is attributed to organic facies variations, different levels of biodegradation, and late charge of condensate rather than to thermal maturity and migration-related effects. (author)

  13. Late-glacial and Holocene history of the dry forest area in the south Colombian Cauca Valley

    Science.gov (United States)

    Berrío, Juan Carlos; Hooghiemstra, Henry; Marchant, Robert; Rangel, Orlando

    2002-10-01

    Two sedimentary cores with pollen, charcoal and radiocarbon data are presented. These records document the Late-glacial and Holocene dry forest vegetation, fire and environmental history of the southern Cauca Valley in Colombia (1020 m). Core Quilichao-1 (640 cm; 3° 6N, 76° 31W) represents the periods of 13 150-7720 14C yr BP and, following a hiatus, from 2880 14C yr BP to modern. Core La Teta-2 (250 cm; 3° 5N, 76° 32W) provides a continuous record from 8700 14C yr BP to modern.Around 13 150 14C yr BP core Quilichao-1 shows an active Late-glacial drainage system and presence of dry forest. From 11 465 to 10 520 14C yr BP dry forest consists mainly of Crotalaria, Moraceae/Urticaceae, Melastomataceae/Combretaceae, Piper and low stature trees, such as Acalypha, Alchornea, Cecropia and Celtis. At higher elevation Andean forest comprising Alnus, Hedyosmum, Quercus and Myricachanged, with extensive open grass vegetation indicative of dry climatic conditions. This event may coincide with the change to cool and dry conditions in the second part of the El Abra stadial, an equivalent to the Younger Dryas. From 8850 climatic conditions relative to the present, these prevailing up to 2880

  14. Bandolerismo rural en el Bajo Cauca, Magdalena Medio y el Nordeste antioqueño (Colombia, 1953-1958

    Directory of Open Access Journals (Sweden)

    Diana Henao Holguín

    2015-07-01

    Full Text Available Este artículo busca contribuir a la discusión sobre el fenómeno del bandolerismo rural desde una perspectiva regional. Explora las zonas del Bajo Cauca, Magdalena Medio y Nordeste antioqueños en Colombia entre 1953 y 1958. En dichos años, el bandolero aparece en el escenario regional tras la descomposición de las guerrillas liberales de la primera fase de La Violencia (1949-1953. Así, adquiere características que difieren del modelo planteado por Eric Hobsbawm, quien propone el concepto bandolerismo social para el análisis de este fenómeno. El artículo evidencia que el análisis contextual permite observar las particularidades del fenómeno y comprender mejor su naturaleza, ya que éstos poseen diversos perfiles que escapan a las explicaciones de tipo general.

  15. Hydraulic characterization of the heterogeneity of the "Valle del Cauca" Aquifer (Colombia)

    Science.gov (United States)

    Donado, L. D.; Gomez-Español, A.

    2012-04-01

    This research consists of a regional study in which is analyzed and defined in detail the response of a large alluvial aquifer to external imposed stresses of varying magnitude at multiple points within its area. On the other hand, this work evaluates and establishes the spatial correlation structure of the transmissivity and specific capacity values and provides a spatial stochastic prediction model. The later acceptably synthesizes the field properties of each of these parameters. The prediction model was developed from the cross correlation between 852 series values of specific capacity and 316 from transmissivity. This model lead us to demonstrate from the geological perspective that exits a relation among geomorphology and recharge areas so that, higher transmissivity values are presented in the lowlands of the valley through which rivers flow localized in recharge areas generated by geological folds. Since 1950, began an intensive development of this aquifer (Colombia). Despite the country has a positive water balance (IDEAM, 2003), this aquifer is the most productive one in Colombia, has an extension of 3,300 km2. Approximately 1,500 wells supply about 92,540 L/s used for agricultural and industrial purposes. This research uses about 1,000 pumping tests carried out since 1970 by the regional environmental agency (CVC). We interpreted those pumping tests using the diagnostic plot method (Rennard, 2008) to determine aquifer transmissivity and specific capacity. The model figures out a significant geological heterogeneity in the apparently homogeneous alluvial aquifer that leads us to use several interpretation methods for different boundary and well conditions. This brings into question the validity of the regional scale research using a single method of interpretation. Similarly, the results permit us to review the current conceptual model of a three layers aquifer (unconfined - aquitard - confined aquifers) with a defined thickness to a heterogeneous model

  16. Frequency and variability of dental morphology in deciduous and permanent dentition of a Nasa indigenous group in the municipality of Morales, Cauca, Colombia

    OpenAIRE

    Eider Díaz; Lorena García; Michelle Hernández; Lesly Palacio; Diana Ruiz; Nataly Velandia; Judy Villavicencio; Freddy Moreno

    2014-01-01

    Objectives:To determine the frequency, variability, sexual dimorphism and bilateral symmetry of fourteen dental crown traits in the deciduous and permanent dentition of 60 dental models (35 women and 25 men) obtained from a native, indigenous group of Nasa school children of the Musse Ukue group in the municipality of Morales, Department of Cauca, Colombia.Material and methods:This is a quantitative descriptive, cross-sectional study that characterizes dental morphology by means of the system...

  17. Late glacial and Holocene history of the dry forest area in south Colombian Cauca Valley from sites Quilichao and la Teta

    International Nuclear Information System (INIS)

    Two sedimentary cores with records of pollen and charcoal content within a chronology provided by radiocarbon are presented from the southern Cauca Valley in Colombia (1020 m). These records document the late glacial and Holocene dry forest vegetation, fire and environment history. Specifically, core Quilichao -1 (640 cm; 3 degrade 6' N, 76 degrade 31' W) represents the periods of 13/150-7720 14C yr BP and following a hiatus from 2880 14C yr BP to recent. Core la Teta - 2 (250 cm; 3 degrade 5' N, 76 degrade 32' W) provides a record from 8700 14C yr BP around 13/150 214C yr BP Quilichao shown an active late glacial drainage system and presence of dry forest. From 11/465-10/520 14C yr BP dry forest consists mainly of Crotalaria Moraceae Urticaceae, Melastomataceae, Piper and low stature trees, such as Acalypha, Alchornea, Cecropia and Celtis. At higher elevation on the slopes Andean forest with Quercus, Hedyosmum, Myrica and Alnus are common

  18. DIETA DE LA NUTRIA NEOTROPICAL Lontra longicaudis (CARNÍVORA, MUSTELIDAE EN EL RÍO ROBLE, ALTO CAUCA, COLOMBIA DIET OF THE NEOTROPICAL OTTER Lontra Longicaudis (Carnivora, Mustelidae IN THE ROBLE RIVER, UPPER CAUCA BASIN, COLOMBIA

    Directory of Open Access Journals (Sweden)

    Rosemary Mayor-Victoria

    Full Text Available Se estudio la dieta de la nutria neotropical en el río Roble, sistema del río La Vieja , alto Cauca, Colombia. Desde agosto de 2006 hasta marzo de 2007 dos veces por mes fueron colectadas heces de la nutria en bolsas plásticas en la zona baja del río Roble. En el laboratorio las muestras fueron lavadas, tamizadas y comparadas con una colección de referencia. Se reconocieron 14 categorías alimenticias, dentro los cuales los peces de la Familia Loricariidae , presentaron el mayor porcentaje de frecuencia, particularmente la especie Chetostoma sp. (22,6%, seguida de Hypostomus sp. (9,55% y Ancistrus sp. (8,54%; otras especies de peces aprovechadas por la nutria en menor proporción son: Apteronotus sp. (11,6%, Brycon henni (9,86%, Lebiasina sp. (0,70%, y Rhamdia sp. (9,15%. Los insectos fueron el siguiente grupo en importancia, con la especie Corydalus sp. (9% (Familia Corydalidae, y en menor presencia los reptiles de la Familia Corytophanidae , especie Basiliscus sp. Se encontró diferencias significativa, entre los ítems consumidos por temporada climática (Rs = 0,429; n= 11 p= 0.00001.The diet of Neotropical otters was studied at Roble river, a tributary of La Vieja river, Upper Cauca basin, Colombia . From August 2006 to March 2007 otter scats were collected twice per month using plastic bags, from the lower stretch of the Roble river. In the laboratory, the scats were washed, sieved and items were identified by comparing them with a reference collection. Fourteen food categories were recognized. Ranked by frequency of occurrence, benthic sucker-mouthed catfish were the favored food items, especially Chaetostoma sp (22,6 % followed by Hypostomus sp. (9,55% and Ancistrus sp. (8,54%. Other species of fish eaten by the otters are: Apteronotus sp. (11,6 %, Brycon henni (9,86 %, Lebiasina sp. (0,70%, y Rhamdia sp. (9,15 %; (Family Loricariidae., followed by insects Corydalus sp (9% (Family Corydalidae. The lowest frequency observed was for

  19. DETERMINACIÓN DE CAUDALES AMBIENTALES CONFIABLES EN COLOMBIA: EL EJEMPLO DEL RÍO PALACÉ (CAUCA

    Directory of Open Access Journals (Sweden)

    Diez Hernández Juan Manuel

    2008-07-01

    Full Text Available La explotación creciente de los recursos hídricos en Colombia requiere una reglamentación avanzada para determinar los Regímenes de Caudales Ambientales (RCA que fundamentan los Planes de Ordenación y Manejo de Cuencas Hidrográficas (POMCA. Entre la diversidad de enfoques propuestos para evaluar RCA, el más utilizado y aceptado científicamente es la conocida metodología «Instream Flow Incremental Methodology» (IFIM, cuya aplicabilidad en los ríos de Colombia se ensaya por primera vez en este trabajo. La modelación IFIM del río Palacé aguas abajo de la nueva captación de 500 l/s para el acueducto de Popayán (Cauca revela que el efecto de la detracción limitada del 6.78% del caudal medio anual sobre la integridad ecosistémica fluvial es muy leve. Las simulaciones eco­ hidráulica y eco­ hidrológica del tramo fluvial representativo (longitud 500m, anchura 18m, pendiente 5% y granulometría gruesa con el programa RHABSIM 3.0, detectaron disminuciones poco significativas del hábitat disponible para la ictiofauna y los macroinvetebrados acuáticos. En consecuencia, el manejo de caudales actual del Palacé vinculado a la captación del nuevo acueducto de Popayán es corroborado, según este análisis avanzado IFIM, como un RCA satisfactorio. Este trabajo sugiere investigaciones dirigidas al perfeccionamiento y particularización de IFIM para las condiciones fluviales de Colombia.

  20. Atlantic Multidecadal Oscillation (AMO) forcing on the late Holocene Cauca paleolake dynamics, northern Andes of Colombia

    Science.gov (United States)

    Martínez, J. I.; Obrochta, S.; Yokoyama, Y.; Battarbee, R. W.

    2015-07-01

    The Atlantic Multidecadal Oscillation (AMO), is a major driving climate mechanism, in the eastern Caribbean Sea and the South Atlantic Ocean in relation to the dynamics of the South American Monsoon System (SAMS) for the late Holocene. Here we document the AMO signal in the San Nicolás-1 core of the Cauca paleolake (Santa Fé-Sopetrán Basin) in the northern Andes. Wavelet spectrum analysis of the gray scale of the San Nicolás-1 core provides evidence for a 70 yr AMO periodicity for the 3750 to 350 yr BP time interval, whose pattern is analogous to the one documented for the Cariaco Basin. This supports a possible correlation between enhanced precipitation and ENSO variability with a positive AMO phase during the 2000 to 1500 yr BP interval, and its forcing role on the Cauca ria lake deposits, which led to increased precipitation and to the transition from a igapo (black water) to a varzea (white water) environment ca. 3000 yr BP.

  1. Atlantic Multidecadal Oscillation (AMO forcing on the late Holocene Cauca paleolake dynamics, northern Andes of Colombia

    Directory of Open Access Journals (Sweden)

    J. I. Martínez

    2015-07-01

    Full Text Available The Atlantic Multidecadal Oscillation (AMO, is a major driving climate mechanism, in the eastern Caribbean Sea and the South Atlantic Ocean in relation to the dynamics of the South American Monsoon System (SAMS for the late Holocene. Here we document the AMO signal in the San Nicolás-1 core of the Cauca paleolake (Santa Fé–Sopetrán Basin in the northern Andes. Wavelet spectrum analysis of the gray scale of the San Nicolás-1 core provides evidence for a 70 yr AMO periodicity for the 3750 to 350 yr BP time interval, whose pattern is analogous to the one documented for the Cariaco Basin. This supports a possible correlation between enhanced precipitation and ENSO variability with a positive AMO phase during the 2000 to 1500 yr BP interval, and its forcing role on the Cauca ria lake deposits, which led to increased precipitation and to the transition from a igapo (black water to a varzea (white water environment ca. 3000 yr BP.

  2. [Trophic and reproductive ecology of Trichomycterus calietes and Astrtoblepus cyclopus (pisces: Siluriformes) in Quindio River, Upper Cauca, Colombia].

    Science.gov (United States)

    Román-Valencia, C

    2001-06-01

    The trophic and reproductive ecology of catfish (Trichomycterus caliense and Astroblepus cyclopus) was studied in the Quindio River upper Basin, Alto Cauca, Colombia. The pH was neutral, water oxygen content high (8.4 ppm) and temperature in the habitats was 18.63 degrees C; both species are nonmigratory and sympatric with four other fish species. The ovaries mature primarily between May and September in T. caliense; between December and May in A. cyclopus. The mean size at maturity is 8.3 cm (standard length) in T. caliense and 6.0 cm (standard length) in A. cyclopus; the sex ratio is 1:1 in T. caliense (X2 = 3.4, P > or = 0.05) and in A. cyclopus (X2 = 1.44, P > or = 0.1); the fecundity is low (191 and 113 oocytes respectively) and the eggs are small (1.5 and 2.39 mm respectively). The fishes are insectivorous and specialize in Coleoptera, Diptera and Trichoptera; Spearman Rank Correlation Coefficients (rs = 0.464) indicated that there are differences (T = 2.5148, P < 0.01) between their diets; both taxa did not agree with the expected trophic habits for sympatric species that are morphologically similar and related in the same trophic level. PMID:11935917

  3. La política por los espiritus: escenarios multiculturales en "zonas de contacto" (Valle de Cauca, Colombia

    Directory of Open Access Journals (Sweden)

    Anne-Marie Losonczy

    2013-01-01

    Full Text Available Basado en una reciente investigacion etnografica entre los Embera-Chami de la région plurietnica del Valle del Cauca (Colombia el examen de escenarios de encuentros interénicos encuadrados por la legislacion multicultural permite vislumbrar la paradojica interdependencia entre la institucionalizacion de un concepto culturalista singularizante de "la" cultura y la homogeneizacion politica de los grupos etnicos. La "estatizacion" de las relaciones inter-étnicas, concomitante a la competicion por la visibilidad, entre grupos de igual estatus en la legislacion nacional e internacional aparecen como dimensiones emergentes del campo interétnico, mientras que se confirma el papel performativo de la ritualizacion en la circulacion y la apropriacion de discursos y practicas. Los escenarios descritos que corresponden a múltiples situaciones semejantes evidencian también que la apropiación multidireccional y uso contextual de conceptos genéricos provenientes del espacio académico, nacional e internacional - como "médico tradicional", "derecho ancestral", "reforzamiento cultural", o "chamanismo" - construyen campos de paradojas. Permiten a los actores étnicos de construir y visibilizar una singularidad cultural aislacionista conforme al concepto oficializado de "cultura" pero al mismo tiempo empujan a una mayor apertura de las "zonas de contacto" interétnicas donde circulan una mayor variedad de prácticas y discursos que antes de la institucionalización del multiculturalismo.

  4. [Agricultural land use impacts on aquatic macroinvertebrates in small streams from La Vieja river (Valle del Cauca, Colombia].

    Science.gov (United States)

    Giraldo, Lina Paola; Chará, Julián; Zúñiga, Maria del Carmen; Chará-Serna, Ana Marcela; Pedraza, Gloria

    2014-04-01

    The expansion of the agricultural frontier in Colombia has exerted significant pressure on its aquatic ecosystems during the last few decades. In order to determine the impacts of different agricultural land uses on the biotic and abiotic characteristics of first and second order streams of La Vieja river watershed, we evaluated 21 streams located between 1,060 and 1,534 m asl in the municipalities of Alcalá, Ulloa, and Cartago (Valle del Cauca, Colombia). Seven streams were protected by native vegetation buffers, eight had influence of coffee and plantain crops, and six were influenced by cattle ranching. Habitat conditions, channel dimensions, water quality, and aquatic macroinvertebrates were studied in each stream. Streams draining cattle ranching areas had significantly higher dissolved solids, higher phosphorus, higher alkalinity, higher conductivity, and lower dissolved oxygen than those covered by cropland and forests. Coarse substrates and diversity of flow regimes were significantly higher in cropland and protected streams when compared to streams affected by cattle ranching, whereas the percent of silt and slow currents was significantly higher in the latter. A total of 26,777 macroinvertebrates belonging to 17 orders, 72 families and 95 genera were collected. The most abundant groups were Diptera 62.8%, (Chironomidae 49.6%, Ceratopogonidae 6.7%), Mollusca 18.8% (Hydrobiidae 7.2%, Sphaeriidae 9.6%) and Trichoptera 5.7% (Hydropsychidae 3.7%). The Ephemeroptera, Trichoptera, and Plecoptera orders, known for their low tolerance to habitat perturbation, had high abundance in cropland and forested streams, whereas Diptera and Mollusca were more abundant in those impacted by cattle ranching. Results indicate that streams draining forests and croplands have better physical and biological conditions than those draining pastures, and highlight the need to implement protective measures to restore the latter. PMID:25189079

  5. Contribution of a mixed forest plantation to avifauna conservation at Rio Cauca canyon, Colombia

    International Nuclear Information System (INIS)

    The avifauna of a forest mixed plantation at Cauca river canyon in Caldas department; was monitored during 10 months. Fifty nine understory resident species were captured,10% of them presented high sensibility to habitat perturbation (forest specialists). Only those species with low sensibility (generalists) presented differences between monthly numbers of captures. Other 50 species associated to the plantation, including two endemic and 26% boreal migratory species were registered visually and/or by its vocalizations. The results suggest that this plantation plays a key role in the conservation of local avifauna, is habitat both for species associated with natural forests and for those with less habitat requirements. This type of reforestation with native species could be a restoration model for other degraded areas from the region.

  6. Flow prediction models using macroclimatic variables and multivariate statistical techniques in the Cauca River Valley

    International Nuclear Information System (INIS)

    The project this centred in the revision of the state of the art of the ocean-atmospheric phenomena that you affect the Colombian hydrology especially The Phenomenon Enos that causes a socioeconomic impact of first order in our country, it has not been sufficiently studied; therefore it is important to approach the thematic one, including the variable macroclimates associated to the Enos in the analyses of water planning. The analyses include revision of statistical techniques of analysis of consistency of hydrological data with the objective of conforming a database of monthly flow of the river reliable and homogeneous Cauca. Statistical methods are used (Analysis of data multivariante) specifically The analysis of principal components to involve them in the development of models of prediction of flows monthly means in the river Cauca involving the Lineal focus as they are the model autoregressive AR, ARX and Armax and the focus non lineal Net Artificial Network.

  7. El proceso de sustitución de combustibles pesados por gas natural en el sector industrial del Valle del Cauca y del Cauca - Colombia 2004-2012

    Directory of Open Access Journals (Sweden)

    Andrés Eduardo Rangel Jiménez

    2016-01-01

    Full Text Available Este documento tiene por objetivo analizar el proceso de sustitución de la utilización de combustibles pesados hacia el gas natural por parte de medianas y grandes empresas ubicadas en el Valle del Cauca y norte del Cauca, que se observan durante el periodo 2004-2012. Asimismo, utilizando un modelo Probit de efectos aleatorios en Panel, se estima la propensión de estas industrias a sustituir un combustible altamente contaminante por gas natural. Los resultados muestran que la diferencia de gasto en gas con relación a otros combustibles es determinante en la probabilidad de conversión. Adicionalmente, se confirma que las industrias con menos probabilidad de realizar la conversión son aquellas que utilizan carbón en los procesos de producción.

  8. Genetic population analysis of 17 Y-chromosomal STRs in three states (Valle del Cauca, Cauca and Nariño) from Southwestern Colombia.

    Science.gov (United States)

    Julieta Avila, Sandra; Briceño, Ignacio; Gómez, Alberto

    2009-05-01

    Seventeen Y-chromosomal (DYS19, DYS389 I/II, DYS390, DYS391, DYS392, DYS393, DYS438, DYS439, DYS437, DYS448, DYS456, DYS458, DYS635, YGATA-H4 and DYS385a/b) short tandem repeat (STR) polymorphic systems were typed in three South West Colombian populations: Valle (short term for Valle del Cauca), Cauca and Nariño. DYS385a/b showed the highest gene diversity in the three populations. A total of 287 different Y-chromosome haplotypes were observed in the 308 males analyzed, and the haplotype diversity among populations was 0.9977. The most frequent haplotype was observed only three times and only nineteen others were observed two times. The highest gene diversity was found in Valle and the lowest in Cauca. Analysis of molecular variance (AMOVA) revealed that variation is mainly within populations (99.1%) in agreement with previous results in European populations. In conclusion, these populations could be pooled together in order to create one "Colombian-Mestizo" database for forensic use. PMID:19329077

  9. Riesgo de enfermedades infecciosas transmitidas por transfusión en el Valle del Cauca, Colombia.

    Directory of Open Access Journals (Sweden)

    Armando Cortés B.

    2009-10-01

    Full Text Available Se informa el potencial de riesgo para enfermedades infecciosas obtenidas a través de transfusión en el Valle del Cauca en 1997. Todas de las unidades de sangre colectadas en este departamento se tamizaron para los siguientes marcadores de infección: anticuerpos contra el virus de la inmunodeficiencia humana (anti-VIH-1,2, anticuerpos contra el virus de la hepatitis C (anti-VHC, antígeno de superficie de la hepatitis B (AgHBs y anticuerpos contra Trypanosoma cruzi (anti-Tc, y parcialmente para anticuerpos no treponémicos (VDRL/RPR, anticuerpos contra el virus linfotrópico de células T (anti-HTLV-I/II y anticuerpos totales contra el "core" de la hepatitis B (anti-HBc. El riesgo de adquirir VIH y hepatitis B fue más bajo que para hepatitis C, HTLV y T. cruzi debido al completo tamizaje serológico y reducida prevalencia. El índice calculado de diseminación para cada enfermedad infecciosa fue mayor valor obtenido para bancos de sangre de Cali y tipo de donación coactiva con 12 y 16 infecciones/10,000 transfusiones, respectivamente. El índice fue más bajo en bancos de sangre situados fuera de Cali y con la donación voluntaria correspondiendo a 10 y 7 infecciones/10,000 transfusiones, respectivamente. A pesar de que el número de unidades potencialmente infectadas o personas infectadas es probablemente más bajo que nuestras estimaciones por los falsos positivos y receptores ya infectados, estos datos refuerzan la necesidad de mantener esta información para evaluar el nivel de tamizaje de enfermedades infecciosas en la sangre disponible para la comunidad. Estos datos también le permite a los médicos usuarios y ordenadores de las transfusiones conocer el riesgo aproximado de inducir iatrogénicamente una infección por transfusión en el Valle del Cauca, elemento útil para considerar en la toma de decisiones y a los epidemiológos y encargados de vigilar la salud, el impacto de las transfusiones en la diseminación de ciertas

  10. Physicochemical and biological characterization of the Roble river, Upper Cauca, western Colombia Caracterización fisicoquímica y biológica del río Roble, Alto Cauca, occidente de Colombia

    Directory of Open Access Journals (Sweden)

    Carlos A. García-Alzate

    2010-06-01

    Full Text Available To determine dial and seasonal differences as well as productivity and the trophic status of the lower Roble river, a tributary of the Vieja and upper Cauca rivers of west Colombia, we sampled phytoplankton, zooplankton, fish and macroinvertebrates and recorded physicochemical variables (dissolved oxygen, percent oxygen saturation, pH, conductivity, relative humidity, environmental, water, maximum and minimum temperatures, width, depth, current velocity, substrate, CO2, COD, BOD, total calcium and magnesium hardness, total, dissolved and suspended solids, alkalinity, acidity, chlorine and turbidity during the wet and dry seasons. Most physicochemical variables such as relative humidity, dissolved oxygen and percent oxygen saturation showed low coefficients of variation, except for oxygen deficit. The Shannon-Wiener diversity index, equity and dominance had low values around 0.5. We recorded eight orders, 28 families and 58 genera of macroinvertebrates, three divisions, five orders and 45 genera of phytoplankton, two divisions and six genera of zooplankton and 19 species of fishes. This river has an allochthonous-heterotrophic trophic state and productivity is oligotrophic but with a tendency to eutrophication.Para determinar las diferencias diarias y estaciónales, así como la productividad y el estado trófico del río Roble, un afluente de la Vieja, alto Cauca al occidente de Colombia, tomamos muestras de fitoplancton, zooplancton, peces y macroinvertebrados y registramos variables físico-químicas (oxígeno disuelto, porcentaje de saturación de oxígeno, pH, conductividad, humedad relativa, temperaturas ambiente, del agua, máximas y mínimas, ancho, profundidad, velocidad de la corriente, sustrato, CO2, DQO, DBO5, dureza total, dureza calcica y durezas magnesicas, sólidos totales, disueltos y suspendidos, alcalinidad , acidez, cloruros y turbidez durante sequía y lluvias. La mayoría de las variables físico-químicas tales como la

  11. Diversidad de hongos micorrizógenos arbusculares de una crono secuencia de suelos aluviales degradados por actividad minera en el bajo cauca antioqueño, colombia.

    OpenAIRE

    Medina Sierra, Marisol; Orozco Patiño, Francisco Hernando; Márquez Fernández, María Elena

    2011-01-01

    Se evaluó la presencia de hongos micorrizógenos arbusculares (HMA) en suelos de zonas alteradas y no alteradas por minería de aluvión de los subgrupos Tropic Fluvaquent, Typic Dystropept y Typic Paleudult de terrazas Baja, Media, y Alta, respectivamente, del río Cauca a la altura del municipio de Tarazá (Antioquia, Colombia). La multiplicación de propágulos de HMA se realizó en jarras de Leonard en invernadero, utilizando sustrato estéril, solución Hoagland´s modificada y como inóculo diferen...

  12. Efecto de algunas prácticas de manejo sociocultural del suelo sobre agroecosistemas de Guacarí, Valle del Cauca, Colombia

    OpenAIRE

    Vergara Gómez, Andrés Felipe; GÓMEZ LÓPEZ, EYDER DANIEL

    2015-01-01

    En agroecosistemas de Santa Rosa de Tapias, Valle del Cauca, Colombia, mediante algunos indicadores físicos, químicos y biológicos se busca determinar el efecto de las prácticas de manejo sociocultural del suelo; bien social fundamental para la sustentabilidad del agroecosistema. El trabajo está en fase inicial, obteniéndose algunos resultados mediante socialización, investigación acción participativa (IAP) y entrevistas. Se caracterizarán seis fincas y, siguiendo los protocolos de los labora...

  13. Retención y disponibilidad de fósforo asociado a la materia orgánica en un Typic Melanudands del departamento del Cauca, Colombia

    OpenAIRE

    Isabel Bravo; Juan Carlos Montoya; Juan Carlos Menjivar

    2013-01-01

    En el departamento del Cauca, Colombia, en un Typic Melanudands cultivado con café (Coffea arabica) y guamo (Inga spuria) como sombrío, se evaluó el efecto de la materia orgánica (M.O.) sobre la retención y disponibilidad de fósforo (P), mediante isotermas elaboradas a partir de la ecuación de Langmuir linealizada por Scatchard y empleando el método propuesto por Fox y Kamprath (1970). Se utilizó un diseño completamente al azar con 60 tratamientos, generados a partir de cinco dosis de P por s...

  14. Analysis of meteorological drought for Dagua river basin, Valle del Cauca, Colombia

    Directory of Open Access Journals (Sweden)

    Nathalia González López

    2016-06-01

    Full Text Available Context: Extreme climatic events causes great challenges for social, economic and environmental sustainability of a region. Droughts affect agricultural activities significantly thus endangering the livelihoods and food security of rural populations, this is especially crucial for developing countries. The objective of this study is to characterize meteorological drought in Dagua river basin, Valle del Cauca.Method:  Intensity, magnitude, duration and frequency of drought events was estimated using the Standardized Precipitation Index (SPI, for semi-annual and annual groupings with records of 19 stations, during the period 1982-2011Results: At least one drought was identified in each series; the area near to the subxerofític Basin region, exhibits more frequency of extremely strong drought and lower threshold of minimum precipitation; the largest percentage of spatial coverage of drought coincides with El Niño phenomena events, such as those that occurred in 91-92 to 09-10.Conclusions: The results obtained provide an approach for prediction and characterization of drought, and offer inputs to generate strategies for planning and mitigation of their impacts.

  15. DIETA DE LA NUTRIA NEOTROPICAL Lontra longicaudis (CARNÍVORA, MUSTELIDAE EN EL RÍO ROBLE, ALTO CAUCA, COLOMBIA

    Directory of Open Access Journals (Sweden)

    Botero-Botero Alvaro

    2010-04-01

    Full Text Available Se estudio la dieta de la nutria neotropical en el río Roble, sistema del río La Vieja, alto Cauca, Colombia. Desde agosto de 2006 hasta marzo de 2007 dos veces por mes fueron colectadas heces de la nutria en bolsas plásticas en la zona baja del río Roble, en laboratorio las muestras fueron lavadas, tamizadas y comparadas con una colección de referencia.Se reconocieron 14 categorías alimenticias, dentro los cuales los peces de la Familia Loricariidae, presentaron el mayor porcentaje de frecuencia, particularmente la especie Chetostoma sp. (22,6%, seguida de Hypostomus sp.  (9,55% y  Ancistrus sp.  (8,54%;  otras especies de peces aprovechadas por la nutria en menor proporción son: Apteronotus sp. (11,6%, Brycon henni  (9,86%, Lebiasina sp. (0,70%, y Rhamdia sp. (9,15%. Los insectos fueron el siguiente grupo en importancia, con la especie Corydalus sp. (9% (Familia Corydalidae, y en menor presencia los reptiles de la Familia Corytophanidae, especie Basiliscus sp. Se encontró diferencias significativa, entre los ítems consumidos por temporada climática (Rs = 0,429; n= 11 p= 0.00001.

  16. Vinasse application to sugar cane fields. Effect on the unsaturated zone and groundwater at Valle del Cauca (Colombia).

    Science.gov (United States)

    Ortegón, Gloria Páez; Arboleda, Fernando Muñoz; Candela, Lucila; Tamoh, Karim; Valdes-Abellan, Javier

    2016-01-01

    Extensive application of vinasse, a subproduct from sugar cane plantations for bioethanol production, is currently taking place as a source of nutrients that forms part of agricultural management in different agroclimatic regions. Liquid vinasse composition is characterised by high variability of organic compounds and major ions, acid pH (4.7), high TDS concentration (117,416-599,400mgL(-1)) and elevated EC (14,350-64,099μScm(-1)). A large-scale sugar cane field application is taking place in Valle del Cauca (Colombia), where monitoring of soil, unsaturated zone and the aquifer underneath has been made since 2006 to evaluate possible impacts on three experimental plots. For this assessment, monitoring wells and piezometers were installed to determine groundwater flow and water samples were collected for chemical analysis. In the unsaturated zone, tensiometers were installed at different depths to determine flow patterns, while suction lysimeters were used for water sample chemical determinations. The findings show that in the sandy loam plot (Hacienda Real), the unsaturated zone is characterised by low water retention, showing a high transport capacity, while the other two plots of silty composition presented temporal saturation due to La Niña event (2010-2011). The strong La Niña effect on aquifer recharge which would dilute the infiltrated water during the monitoring period and, on the other hand dissolution of possible precipitated salts bringing them back into solution may occur. A slight increase in the concentration of major ions was observed in groundwater (~5% of TDS), which can be attributed to a combination of factors: vinasse dilution produced by water input and hydrochemical processes along with nutrient removal produced by sugar cane uptake. This fact may make the aquifer vulnerable to contamination. PMID:26372944

  17. Influencia de acondicionadores sintéticos y orgánicos en cuatro suelos del Valle del Cauca

    OpenAIRE

    Madriñan, Molina

    2014-01-01

    Este trabajo se realizó en el invernadero de la Facultad de Ciencias Agropecuarias de Palmira, con el propósito de averiguar el efecto del acondicionador sintético y de la materia orgánica en las propiedades físicas de cuatro suelos del Valle del Cauca. / Abstract starts here. This work was carried out in the greenhouse of the Facultad de Ciencias Agropecuarias of Palmira, Cauca Valley, Colombia. The purpose was to investigate the effect or one synthetic soil conditioner and two kinds of orga...

  18. Two new species of Edmockfordia García Aldrete (Psocodea, ‘Psocoptera’, Epipsocidae, from Valle del Cauca, Colombia, and description of the female E. chiquibulensis García Aldrete

    Directory of Open Access Journals (Sweden)

    Julián A. Mendivil Nieto

    2015-05-01

    Full Text Available Two new species of Edmockfordia García Aldrete, from Valle del Cauca, Colombia, and the female of E. chiquibulensis García Aldrete, are described and illustrated. A key to the species of Edmockfordia is included; the genus was previously known only from Belize. The genus is re-diagnosed to include female characters. The distribution of the genus is considerably widened, from Belize to northeastern South America.

  19. Early and Middle Holocene evidence for plant use and cultivation in the Middle Cauca River Basin, Cordillera Central (Colombia)

    Science.gov (United States)

    Aceituno, Francisco J.; Loaiza, Nicolás

    2014-02-01

    This paper presents the latest results of research done in the Colombian Andean region known as Middle Cauca River Basin, an important location for the study of the origins of plant use and the dispersal of domesticates throughout the Americas due to its geographical position in northwest South America. We discuss human-environment interactions during Pleistocene/Holocene transition to middle Holocene (ca 10,000-4000 BP), specifically human-plant interaction and environmental factors that led to the adoption of horticultural practices. Three lines of evidence are analyzed: archaeological stratigraphy, lithic technology, and microbotanical remains. Our results suggest that early Holocene environmental stability allowed Middle Cauca settlers to use the diverse local resources for several millennia, altering the local vegetation, and leading to the development of horticultural practices that included the use of both local and foreign plants. These results inform the ongoing debate about the antiquity and nature of plant domestication and dispersals in the Americas.

  20. Cambios en coberturas de áreas y usos del suelo en tres humedales en el Valle del Cauca Changes of the coverage of three wetland areas in Cauca Valley

    Directory of Open Access Journals (Sweden)

    Christian Andrés Núñez Restrepo

    2009-10-01

    Full Text Available El objetivo de este proyecto fue aplicar la tecnología de Sistemas de Información Geográfica (SIG, en especial los programas ARCGIS y ERDAS, como metodología para identificar los cambios de cobertura de área y uso del suelo en las zonas de los humedales la Bolsa, Charco de Oro y el Pital, localizados en la parte plana del municipio de Andalucía corregimiento de Campoalegre y El Salto (Valle del Cauca, Colombia. Para el estudio se utilizaron fotografías aéreas de 1950 y 1998, imágenes Landsat 2002 y cartografía base de la zona. Los procesos dentro de la metodología fueron depurados, un ejemplo es la georreferenciacion de las fotografías y la creación de fotomosaicos que conllevan una imagen con mejor apariencia visual y más fácil identificación de los humedales, de manera que al hacer comparaciones, aquellos arrojen cambios de cobertura en la zona de estudio. Así, la utilización de los SIG y un correcto tratamiento de las imágenes satelitales resultan de gran ayuda no sólo en la obtención de los cambios en el uso del suelo y los humedales, sino también en diferentes áreas donde la utilización de esta tecnología es poco común.The objective of this project was to apply geographic information system (GIS technology, mainly ARCGIS and ERDAS software, as a methodology to identify changes in coverage and land usage of the terrain comprising the wetlands La Bolsa, Charco de Oro, and El Pital, located in the flat zone of the Andalucia municipality, in the villages of Campo Alegre and el Salto (Valle del Cauca Department, Colombia. The study employed aerial photos from 1950 and 1998, Landsat images from 2002, and base cartography of the zone. The processes within the methodology were purged. For example, the geo-referencing of photographs, and the creation of photo-mosaics to convey an image with a better visual appearance, and easier identification of the wetlands, in such a way that when making comparisons, they reveal changes

  1. Epidemiología de la colección, proceso y uso de sangre y componentes sanguíneos en el Valle del Cauca, Colombia.

    Directory of Open Access Journals (Sweden)

    Armando Cortés B.

    2009-10-01

    Full Text Available Para evaluar la práctica transfusional y los efectos del suministro de sangre, se estudió la colección y transfusión de sangre en el Valle del Cauca, Colombia, mediante una encuesta de información con las secretarías de Salud Municipal de Cali y Departamental, y los resultados de una muestra de hospitales y clínicas del departamento. Se usaron métodos estadísticos para calcular las actividades principales. El cuestionario incluyó información del donante de sangre, número de unidades colectadas y procedimiento de colección por entidad, servicios ofrecidos, producción y uso de componentes sanguíneos durante 1997. Para calcular la tasa de incidencia de transfusiones de sangre y componentes en la población general y en edad y grupos específicos, se tomó una muestra de habitantes del departamento del Valle que recibieron transfusiones durante 1997. El estudio determinó los casos de transfusión en un grupo de individuos bien definido y en un tiempo específico. Este estudio proporciona datos recientes en las actividades de donación y transfusión que son vitales para evaluar la práctica transfusional. Es el primer informe de tasa de incidencia de transfusión sanguínea en Colombia.

  2. Estudio de la artropofauna asociada a suelos de dos tipos de ecosistemas en la cuenca del río Cauca - Colombia Soil arthropos study in two differents ecosystems from Cauca River - Colombia

    OpenAIRE

    Téllez Leonardo; Agudelo Daniel; Salinas Ardi; Camero-R. Édgar; Diaz Julián Esteban

    2005-01-01

    En el flanco occidental del cauce del río Cauca se escogieron dos bosques con distinto tipo de vegetación: nativo y de coníferas, para efectuar comparaciones en cuanto a la composición de los artrópodos tanto en el estrato rasante del suelo como en horizontes subsuperficiales. Para la captura de la fauna se utilizaron trampas pitfall y la técnica de Berlesse y se aplicaron índices de diversidad,  abundancia relativa, frecuencia y biomasa. Los resultados muestran diferencias significativas en ...

  3. Estimación mediante RAPD's de la diversidad genética en Guadua en el departamento del Cauca, Colombia

    Directory of Open Access Journals (Sweden)

    Palacio M. Juan Diego

    2006-06-01

    Full Text Available

    Mediante RAPD's se analizaron 120 muestras foliares de 12 biotipos de Guadua angustifolia Kunth clasificados morfológicamente, procedentes de la cuenca del río Cauca, en el departamento del Cauca, Colombia, para determinar diversidad genética. El ADN se extrajo mediante el protocolo modificado de Dellaporta (1983. Se emplearon los cebadores; OPF-12, OPG-19, OPN-19 y OPP-16 con mayor número de bandas polimórficas. El índice de Shannon (HT = 0.4556 ± 0.1849 señaló diversidad genética total alta y diversidad entre los biotipos y al interior de ellos. El Índice de estructura genética (Gst = 0.5200 e Indice de migración efectiva (Nm = 0.4615 definieron biotipos bien diferenciados. El análisis de similaridad conformó tres grupos a un coeficiente de 0.64. El grupo G1 incluyó los biotipos Curvado, Rayada frecuente, Amarilla Playón, Rayada ancha, Rayada escasa, Convexa, Amarilla, Hembra, Verde irregular y algunos individuos de verde alta. El grupo G2, Verde alta y Macho. El grupo G3, Rayada negra. El estudio molecular agrupó los individuos de forma similar al estudio morfológico, con excepción de los individuos del biotipo Hembra.

    Palabras claves: Guadua angustifolia, caracterización molecular, variación genética.

  4. Prevalencia de deserción escolar en embarazadas adolescentes de instituciones educativas oficiales del Valle del Cauca, Colombia, 2006

    OpenAIRE

    Mauricio Hernández; Iván Osorio

    2011-01-01

    Antecedentes: Partiendo de la institución educativa, se investigó la relación entre embarazo adolescente y deserciónescolar y como influía el grado escolar y la edad de la embarazada en su riesgo de deserción.Materiales y métodos: Se aplicó una encuesta voluntaria en 180 instituciones educativas oficiales del departamento delValle del Cauca, correspondiente a 112,470 estudiantes mujeres, encontrando 605 embarazadas. De estas, a 564 se les realizóuna entrevista por un profesional en psicología...

  5. Estudio de la artropofauna asociada a suelos de dos tipos de ecosistemas en la cuenca del río Cauca - Colombia Soil arthropos study in two differents ecosystems from Cauca River - Colombia

    Directory of Open Access Journals (Sweden)

    Téllez Leonardo

    2005-07-01

    Full Text Available En el flanco occidental del cauce del río Cauca se escogieron dos bosques con distinto tipo de vegetación: nativo y de coníferas, para efectuar comparaciones en cuanto a la composición de los artrópodos tanto en el estrato rasante del suelo como en horizontes subsuperficiales. Para la captura de la fauna se utilizaron trampas pitfall y la técnica de Berlesse y se aplicaron índices de diversidad,  abundancia relativa, frecuencia y biomasa. Los resultados muestran diferencias significativas en la abundancia y la composición de los grupos de artrópodos encontrados, al igual que en los parámetros de biomasa y en la composición de grupos funcionales, lo cual puede interpretarse como cambios en la estructura trófica de los ecosistemas nativos por razones de intervención antrópica.Two different ecosystems: a native forest and a pine plantation were chosen on the west side of Cauca river to study the arthropod composition in the upper horizons and interior ones. Catches were made through pitfall traps and Berlesse techniques and population comparisons were made in all horizons based on Diversity, Frequency, Abundance and Biomass indexes. Results show differences in arthropods fauna composition and its abundance in both ecosystems  with all indexes used, and differences in biomass and functional groups measurements, could indicate changes in ecosystem composition and relationships due to man perturbations.

  6. Sistemas de siembra de Cratylia argentea cultivar Veranera en dos localidades del valle del río Cauca, Colombia

    Directory of Open Access Journals (Sweden)

    Jaime Rosero Alpala

    2010-10-01

    Full Text Available Cratylia argentea cv. Veranera, es una especie forrajera importante para la ganadería en zonas de trópico bajo de América Latina. Es originaria de Goiás, región de Brasil, caracterizada por suelos ácidos típicos del ecosistema Cerrado. La investigación se realizó en Quilichao, Cauca, una zona con suelos ácidos y en Palmira, Valle del Cauca, en suelos de alta fertilidad. En un arreglo de parcelas divididas se determinó el efecto de los sistema de siembra directa y trasplante de esta leguminosa con y sin inocular con aplicación de N (18% N, 18% N+inóculo, inóculo y control y cuatro niveles de fósforo (0, 20, 40, 80 kg/ha. La emergencia fluctuó entre 85-97% y 78-92% a los 25 y 35 días después de siembra (dds para Quilichao y Palmira, respectivamente. La supervivencia de plantas en campo para siembra directa y con trasplante fluctuó entre 94-97% en Quilichao y 79-88% en Palmira. El período de establecimiento presentó diferencias altamente significativas entre localidades (P < 0.01 con 147 días en Quilichao (más del 90% de establecimiento para siembra directa y con trasplante, respecto a los encontrados en Palmira (menor al 50 % establecimiento a los 210 días para siembra directa y con trasplante. El establecimiento de Cratylia se vio afectado por los suelos alcalinos y con bajo hierro asimilable de Palmira (P<0,05. La rapidez de establecimiento no se vio afectada por el sistema de siembra, ni el tiempo de establecimiento mejoró con la fertilización nitrogenada y fosfórica ni con la inoculación con Rhizobium sp.

  7. Sistemas de siembra de Cratylia argentea cultivar Veranera en dos localidades del valle del río Cauca, Colombia

    Directory of Open Access Journals (Sweden)

    Rosero Alpala Jaime

    2010-12-01

    Full Text Available

    Cratylia argentea cv. Veranera, es una especie forrajera importante para la ganadería en zonas de trópico bajo de América Latina. Es originaria de Goiás, región de Brasil, caracterizada por suelos ácidos típicos del ecosistema Cerrado. La investigación se realizó en Quilichao, Cauca, una zona con suelos ácidos y en Palmira, Valle del Cauca, en suelos de alta fertilidad. En un arreglo de parcelas divididas se determinó el efecto de los sistema de siembra directa y trasplante de esta leguminosa con y sin inocular con aplicación de N (18% N, 18% N+inóculo, inóculo y control y cuatro niveles de fósforo (0, 20, 40,

    80 kg/ha. La emergencia fluctuó entre 85-97% y 78-92% a los 25 y 35 días después de siembra (dds para Quilichao y Palmira, respectivamente. La supervivencia de plantas en campo para siembra directa y con trasplante fluctuó entre 94-97% en Quilichao y 79-88% en Palmira. El período de establecimiento presentó diferencias altamente significativas entre localidades (P < 0.01 con 147 días en Quilichao (más del 90% de establecimiento para siembra directa y con trasplante, respecto a los encontrados en Palmira (menor al 50 % establecimiento a los 210 días para siembra directa y con trasplante. El establecimiento de Cratylia se vio afectado por los suelos alcalinos y con bajo hierro asimilable de Palmira (P<0,05. La rapidez de establecimiento no se vio afectada por el sistema de siembra, ni el tiempo de establecimiento mejoró con la fertilización nitrogenada y fosfórica ni con la inoculación con Rhizobium sp.

  8. Prevalencia de citología anormal e inflamación y su asociación con factores de riesgo para neoplasias del cuello uterino en el cauca, colombia

    OpenAIRE

    Sierra-Torres, Carlos H; Tafurt-Cardona, Yaliana; Acosta-Astaiza, Claudia P

    2012-01-01

    Objetivos Establecer la prevalencia del resultado de citología anormal e inflamación y su asociación con factores de riesgo para neoplasias del cuello uterino en mujeres del departamento del Cauca, Colombia. Metodología Después de la firma voluntaria del consentimiento informado, las mujeres fueron entrevistadas a través de un cuestionario para colectar variables de tipo sociodemográfico y clínico, incluyendo historia reproductiva, actividad sexual, historia de citología y hábito de fumar. Po...

  9. Petroleum systems of the Upper Magdalena Valley, Colombia

    Energy Technology Data Exchange (ETDEWEB)

    Sarmiento, L.F.; Rangel, A. [Instituto Colombiano del Petroleo, Bucaramanga (Colombia). ECOPETROL

    2004-03-01

    In the Upper Magdalena Valley, Colombia, four petroleum systems were identified. Two petroleum systems are located in the Girardot sub-basin and the other two in the Neiva sub- basin. Limestones laterally changing to shales of the lower part of the Villeta Gp, deposited during Albian and Turonian marine flooding events, constitutes the main source rocks of the oil families. These rocks contain 1-4% TOC and type II kerogen. The littoral quartz arenites of the Caballos (Albian) and Monserrate (Maastrichtian) Fms. are the main reservoir rocks. Seal rocks are Cretaceous and Paleocene shales. Overburden includes the Cretaceous rocks and the Tertiary molasse deposited simultaneously with development of two opposite verging thrust systems during Cenozoic time. These deformation events were responsible for trap creation. Except for the Villarrica area, where the source rock reached maturity during the Paleocene, generation occurred during Miocene. Two oil families are identified, each in both sub-basins: One derived from a clay-rich source and the second from a carbonate-rich source rock lithofacies of the lower part of Villeta Gp. Geochemical source-rock to oil correlations are demonstrated for the three of the petroleum systems. Up-dip lateral migration distances are relatively short and faults served as vertical migration pathways. A huge amount of oil was probably degraded at surface, as a result of Miocene deformation and erosion. (author)

  10. Retención y disponibilidad de fósforo asociado a la materia orgánica en un Typic Melanudands del departamento del Cauca, Colombia

    Directory of Open Access Journals (Sweden)

    Isabel Bravo

    2013-07-01

    Full Text Available En el departamento del Cauca, Colombia, en un Typic Melanudands cultivado con café (Coffea arabica y guamo (Inga spuria como sombrío, se evaluó el efecto de la materia orgánica (M.O. sobre la retención y disponibilidad de fósforo (P, mediante isotermas elaboradas a partir de la ecuación de Langmuir linealizada por Scatchard y empleando el método propuesto por Fox y Kamprath (1970. Se utilizó un diseño completamente al azar con 60 tratamientos, generados a partir de cinco dosis de P por seis tiempos de incubación en muestras de suelo con y sin M.O. El análisis de varianza no mostró diferencias significativas en adsorción de P en función del tiempo de incubación (P > 0.05, indicando que la adsorción ocurre desde el tiempo cero. La retención de P se ajustó a la isoterma de Scatchard con valores de L = 0.16 x10(6 (suelo con M.O. y 3 x 10(6 (suelo sin M.O. y demuestra que la retención de P ocurre principalmente en la fracción mineral. El coeficiente de distribución más alto en el suelo sin M.O. (9.72 muestra mayor cantidad de P en sitios de adsorción con respecto al suelo sin ella (4.08. El mayor valor de Qmax en el suelo con M.O. muestra sitios de adsorción pero con baja afinidad, reflejada en el menor coeficiente de reparto, y un fácil proceso de desorción hacia la solución del suelo.

  11. Tierras de la microcuenca potrerillo (Cauca, Colombia: Clasificación local en relación con propiedades edáficas.

    Directory of Open Access Journals (Sweden)

    Cerón Rengifo Carmen Patricia

    2003-12-01

    Full Text Available Este estudio se realizó con el objetivo de relacionar la clasificación local de tierras con propiedades físicas, químicas y biológicas del suelo. Se hicieron entrevistas a 36 agricultores de la microcuenca, Potrerillo, Cauca, Colombia, para considerar criterios culturales de clasificación local; se tomaron muestras de suelo en 8 tierras, de 0 a 5 y 0 a 20 cm, con 5 repeticiones. Se determinó color, textura, N y P disponible, C total, fracción liviana de materia orgánica (LL, PH, Ca, K, Mg y Al. Los datos se trabajaron estadísticamente a partir de análisis de varianza, prueba Duncan y análisis de clasificación de datos. La información sugiere que los agricultores diferencias las tierras a partir de la ubicación, características físicas del suelo y de categorías culturales llamadas tierra buena, mala, brava y cansada. Las tierras consideradas buenas se relacionan con colores pardos oscuros, contenidos más altos de N, C y fracción LL, mayor densidad de miriápodos en tierras con vegetación arbórea y mayor biomasa de lombrices en barbecho de la parte baja de la colina. Entre las tierras de menor calidad, disminuye N, C fracción LL y Al y aumenta el pH; en aquellas que no son utilizadas son frecuentes los colores amarillos o rojos, decrecen los valores de N, C, LL, Ph y se incrementa el Al.

  12. Frequency and variability of dental morphology in deciduous and permanent dentition of a Nasa indigenous group in the municipality of Morales, Cauca, Colombia

    Directory of Open Access Journals (Sweden)

    Eider Díaz

    2014-04-01

    Full Text Available Objectives:To determine the frequency, variability, sexual dimorphism and bilateral symmetry of fourteen dental crown traits in the deciduous and permanent dentition of 60 dental models (35 women and 25 men obtained from a native, indigenous group of Nasa school children of the Musse Ukue group in the municipality of Morales, Department of Cauca, Colombia.Material and methods:This is a quantitative descriptive, cross-sectional study that characterizes dental morphology by means of the systems for temporary dentition from Dahlberg (winging, and ASUDAS (crowding, reduction of hypocone, metaconule and cusp 6, Hanihara (central and lateral incisors in shovel-shape and cusp 7, Sciulli (double bit, layered fold protostylid, cusp pattern and cusp number and Grine (Carabelli trait; and in permanent dentition from ASUDAS (Winging, crowding, central and lateral incisors in shovel-shape and double shovel-shape, Carabelli trait, hypocone reduction, metaconule, cusp pattern, cusp number, layered fold protostylid, cusp 6 and cusp 7.Results:The most frequent dental crown features were the shovel-shaped form, grooved and fossa forms of the Carabelli trait, metaconule, cusp pattern Y6, layered fold, protostylid (point P and cusp 6. Sexual dimorphism was not observed and there was bilateral symmetry in the expression of these features.Conclusions:The sample studied presented a great affinity with ethnic groups belonging to the Mongoloid Dental Complex due to the frequency (expression and variability (gradation of the tooth crown traits, upper incisors, the Carabelli trait, the protostylid, cusp 6 and cusp 7. The influence of the Caucasoide Dental Complex associated with ethno-historical processes cannot be ruled out. 

  13. EVALUACIÓN DE ABONOS VERDES EN EL CULTIVO DE YUCA Manihot sculenta Krantz EN UN INCEPTISOL DE LA ZONA DE LADERA DEL DEPARTAMENTO DEL CAUCA, COLOMBIA EVALUATION OF GREEN FERTILIZERS IN CULTIVATION OF CASSAVA Manihot Sculenta Krantz IN AN INCEPTISOL IN A HILLSIDE ZONE OF THE DEPARTMENT OF CAUCA, COLOMBIA

    Directory of Open Access Journals (Sweden)

    Mary Adriana Salazar Rosero

    2004-12-01

    Full Text Available Se evaluó el corte y la distribución en el campo de varios abonos verdes, entre ellos: maíz - fríjol; mucuna; sorgo; millo - fríjol; millo, en un cultivo de yuca ( Manihot sculenta Krantz en un inceptisol de las laderas del Departamento del Cauca (Colombia, analizando los efectos de ellos sobre las propiedades del suelo, su capacidad para interferir la vegetación espontánea no deseable para el cultivo. Respecto a la incidencia sobre las propiedades físico-químicas del suelo, se observó que la porosidad presentó diferencias significativas por efecto de los diferentes abonos verdes evaluados; sobresaliendo la asociación maíz - fríjol. En las propiedades químicas, calcio y magnesio presentaron diferencias significativas, siendo sus contenidos más altos cuando se empleó el abono verde mucuna, sobresaliendo por su capacidad de reciclar estos nutrientes. El sorgo fue el abono verde donde hubo la menor influencia de la vegetación espontánea por su lenta descomposición y también con el cual se obtuvo la mejor productividad del cultivo de yuca (17 t/ha. En general, todos los abonos verdes presentaron adecuadas cualidades para su empleo, como parte de una estrategia de manejo sostenible de este tipo de suelo.The cut and distribution in the field of various green fertilizers, including corn-red beans, mucuna, sorghum, mille- red beans, and mille, in the cultivation of cassava (Manihot sculenta Krantz, was evaluated in an inceptisol in a hillside zone of the Department of Cauca (Colombia, analyzing their effects on the properties of the soil and their capability to inhibit spontaneous vegetation undesirable for the crop. With respect to the physical-chemical properties of the soil, porosity varied significantly due to the effects of the different green fertilizers evaluated, with the corn-red beans mixture excelling. In terms of chemical properties, calcium and magnesium showed significant differences with their concentrations higher

  14. Adsorción de cadmio, cromo y mercurio en suelos del Valle del Cauca a varios valores de pH Cadmium, chromium and mercury adsorption on Cauca Valley soils as a function of pH

    Directory of Open Access Journals (Sweden)

    García O. Álvaro

    1991-12-01

    Full Text Available Con el fin de observar el proceso de adsorción de Cd, Cr y Hg y determinar el efecto del pH sobre la adsorción de los metales indicados, se seleccionaron tres suelos de los órdenes predominantes en el Valle del Cauca que, por su ubicación, están siendo regados con aguas contaminadas o pueden llegar a serlo en un futuro. El pH de los suelos se ajustó con ácido acético al 1, 4 y 12% o con NaOH 0.01 N para obtener valores lo más próximo posible a 5.7, 6.5 Y 7.8. Se prepararon soluciones de equilibrio con cada metal (0.0, 0.28, 0.56, 1.12 Y 2.25 mg/L y se adicionaron a 0.25 g de suelo seco al aire y tamizado para pasar una malla de 2 mm. La extracción de los metales se realizó con HCI 001 N y se determinaron por espectrofotometría de absorción atómica. La diferencia entre la concentración inicial y la final se consideró como la cantidad adsorbida por el suelo y la diferencia entre la cantidad adsorbida y la cantidad extraída con H Cl 0.01 N se consideró como la cantidad retenida por el suelo. En general el Cd se adsorbe más a valores de pH neutro o alcalino en todos los suelos, debido a que su forma predominante es la divalente y tiende más a formar complejos solubles e insolubles con los aniones encontrados en el suelo por encima de pH 7.0. La adsorción de Cr y Hg es mayor a valores de pH ácido debido a que forman complejos con la materia orgánica del suelo y/o los óxidos e hidróxidos de Fe, Al y Mn cuyas reacciones se ven favorecidas a estos valores de pH. La menor extracción (mayor retención en todos los suelos se dio a valores de pH entre 6.4 y 6.6, indicando que en este pH los metales quedan fuertemente retenidos por el complejo de cambio y su disponibilidad hacia las plantas es mínima.Soils irrigated with heavy metals contamined water are common in Cauca Valley and there is not available information about of soil behavior and soil processes affected by Cd, Cr and Hg. Three soils of the main orders of Cauca Valley

  15. DIVERSIDAD DE HONGOS MICORRIZÓGENOS ARBUSCULARES DE UNA CRONO-SECUENCIA DE SUELOS ALUVIALES DEGRADADOS POR ACTIVIDAD MINERA EN EL BAJO CAUCA ANTIOQUEÑO, COLOMBIA DIVERSITY OF ARBUSCULAR MYCORRHIZAL FUNGI IN A CHRONO-SEQUENCE OF ALLUVIAL AND DEGRADED SOILS DUE TO MINING PROCESSES IN BAJO CAUCA ANTIOQUEÑO, COLOMBIA

    Directory of Open Access Journals (Sweden)

    Marisol Medina Sierra

    2009-06-01

    Full Text Available Se evaluó la presencia de hongos micorrizógenos arbusculares (HMA en suelos de zonas alteradas y no alteradas por minería de aluvión de los subgrupos Tropic Fluvaquent, Typic Dystropept y Typic Paleudult de terrazas Baja, Media, y Alta, respectivamente, del río Cauca a la altura del municipio de Tarazá (Antioquia, Colombia. La multiplicación de propágulos de HMA se realizó en jarras de Leonard en invernadero, utilizando sustrato estéril, solución Hoagland's modificada y como inóculo diferentes fracciones de suelo correspondientes al tamaño de las esporas. Se realizó un primer ensayo en maíz (Zea mays en el cual se logró colonización de las raíces pero no esporulación; en un segundo ensayo en kudzú (Pueraria phaseoloides se logró colonización y esporulación en los tratamientos provenientes de suelo de terraza alta y suelo disturbado y efecto significativo en el rendimiento del kudzú (P≤0,001 respecto a los demás tratamientos. Las esporas de suelos disturbados y no disturbados por minería de aluvión en el Bajo Cauca antioqueño (Colombia mostraron baja capacidad infectiva; sin embargo, en cultivos trampa fue posible multiplicar HMA que produjeron esporas de cuatro morfotipos diferentes, uno de los cuales se identificó como G. microagregatum. El polimorfismo de los morfotipos obtenidos mediante la técnica de RAPD's permitió diferenciarlos con el cebador OPA2 y el agrupamiento por UPGMA con todos los cebadores mostró similitud mayor al 38% entre ellos. Los resultados moleculares y morfológicos, permitieron ubicar los cuatro morfotipos en el género Glomus pero posiblemente pertenecen a especies diferentes. Los resultados obtenidos son promisorios en la diferenciación de cepas nativas con bajo número de esporas colectadas a partir de muestras de suelos en proceso de rehabilitación, de los cuales no se conoce su composición de HMA.Arbuscular mycorrhizal fungi (AMF presence and diversity were evaluated in

  16. Design and management of the Metropolitan Green Belt of Aburrá Valley (Colombia)

    OpenAIRE

    Agudelo Patiño, Luis Carlos; Miralles García, José Luis

    2015-01-01

    Medellín is the center of a metropolitan area that occupies part of the Aburrá Valley. Between 2012 and 2013, the National University of Colombia, local office of Medellín, conducting the study Proposal for the Development of the Metropolitan Green Belt of Aburrá Valley. The study aims to develop a project of ecological planning in the metropolitan region around Medellín in Colombia. The area includes 10 municipalities comprising the metropolitan conurbation of Medellín. The project designs a...

  17. Frequency and variability of the dental morphology in African-Colombian children of a school institution of Puerto Tejada, Cauca, Colombia.

    Directory of Open Access Journals (Sweden)

    Lorena Rocha

    2009-11-01

    Full Text Available Objetivos: Determinar la frecuencia y variabilidad de once rasgos morfológicos dentales coronales (winging, incisivos centrales y laterales en pala, doble pala, cúspide de Carabelli, pliegue acodado, protostílido, patrón cuspídeo, número de cúspides, cúspide 6 y cúspide 7, en dientes permanentes (UI1/UI2/UM1/LM1, para comprender la influencia étnica y la distancia biológica de una muestra obtenida por conveniencia. Materiales y métodos: Se trata de un estudio descriptivo transversal de enfoque cuantitativo para observar la frecuencia y variabilidad de once rasgos morfológicos dentales coronales mediante la metodología ASUDAS en 84 modelos de estudio obtenidos de niños afro-colombianos de ambos sexos (42 mujeres y 42 hombres habitantes del municipio de Puerto Tejada, Cauca (Colombia. Resultados: Se observaron frecuencias altas de cúspide de Carabelli de mediano tamaño (grado 5, patrón cuspídeo +5 y +6, y alta frecuencia de cúspide 7, lo cual sugiere notable influencia del complejo dental occidental (caucasoides y negroides. Se apreciaron altas frecuencias del protostílido (punto P o  foramen secum y del pliegue acodado lo cual sugiere influencia mongoloide a partir de la miscegenación con grupos indígenas regionales. Los rasgos morfológicos winging, incisivos centrales y laterales en pala, doble pala, número de cúspides y cúspide 6 presentaron frecuencias bajas. Se demostró la simetría bilateral y ausencia de dimorfismo sexual (a excepción de winging, incisivos en pala y protostílido. Estos resultados son importantes dentro de los contextos odontológico y forense durante los procesos de identificación, y en el contexto antropológico para estimar la odontobiografía de una población específica.

  18. Correlación de variables macroclimáticas del Océano Pacífico con los caudales en los ríos interandinos del Valle del Cauca (Colombia

    Directory of Open Access Journals (Sweden)

    Yesid Carvajal

    2014-06-01

    Full Text Available Los fenómenos climáticos sobre los océanos ejercen gran influencia sobre la hidroclimatología del valle del río Cauca (Colombia, en especial el evento "El Niño Oscilación Sur" (ENOS, que es responsable de la variabilidad climática en escalas de tiempo que van desde meses hasta décadas. Debido a esta dependencia, se estudió la correlación entre 8 variables indicadoras del clima en los Océanos Pacífico y Atlántico con los caudales medios mensuales de 8 ríos del valle del río Cauca. Las series cubren un período promedio de 40 años 1957-1997. Los resultados muestran las variaciones regionales de la situación hidrológica del valle del río Cauca respecto a las variables macroclimáticas. Los coeficientes de correlación indican que las variables que presentan mayor asociación con los caudales analizados son en su orden: Las temperaturas de la superficie del mar en las regiones Niño 3, Niño 3-4, Niño 4 Y SOl, mientras en el Atlántico, las mejores correlaciones las presentan: la Temperatura en el Trópico, en el Atlántico Norte (NATL y Atlántico Sur (SATL respectivamente.

  19. Water grabbing in the Cauca basin

    DEFF Research Database (Denmark)

    Velez Torres, Irene

    2012-01-01

    This article examines water grabbing in the Alto Cauca in Colombia as a form of accumulation through ethnicised and racialised environmental dispossession in the capitalist system. Characterised by privatisation and historical trends of exclusion, this violent accumulation model has shaped...... a particular form of environmental racism leading to negative impacts experienced in historically marginalised Afro-descendant local communities. Analyzing two development projects in the upper watershed of the Cauca river – the Agua Blanca Irrigation District Project and a Project for Diverting the River...

  20. el Valle del Cauca

    Directory of Open Access Journals (Sweden)

    Carlos Humberto Ortiz

    2007-01-01

    Full Text Available Este artículo se enfoca en la identi- ficación de aquellos factores estructurales que explican la pérdida de dinamismo económico de largo plazo en Colombia y, en particular, en el Valle del Cauca. Se examina la competitividad del Valle en relación con Colombia y con el resto del mundo. Se cuestiona la insistencia en una estrategia exportadora como dinamizadora del desarrollo económico. Se identifica que una gran parte de la población está excluida de los beneficios del desarrollo económico. Para construir un modelo de desarrollo que incluya a esta población se recomienda recuperar la senda de la industrialización, invertir en el capital humano (educación de alta calidad, salud, salubridad y nutrición, e invertir en infraestructura. La participación del Estado en estas inversiones sociales es necesaria para disminuir la desigualdad y aumentar el crecimiento económico.

  1. Life cycle, agricultural importance and integrated management of the rhizophagous whitegrub, Phyllophaga menetriesi Blanchard (Coleoptera: Melolonthidae, in Cauca and Quindío, Colombia Ciclo de vida, importancia agrícola y manejo integrado de la chisa rizófaga Phyllophaga menetriesi Blanchard (Coleoptera: Melolonthidae, en Cauca y Quindío, Colombia

    Directory of Open Access Journals (Sweden)

    Montoya Lerma James

    2007-12-01

    Full Text Available The life cycle of Phyllophaga menetriesi was studied under laboratory conditions using samples taken from different crop systems in the departments of Cauca and Quindio, Colombia. The life cycle is annual and the developmental stages of this species were as follows: egg, 2–3 weeks; first instar, 3–4 weeks; second instar, 6–8 weeks; third instar, 20–25 weeks; prepupa, 2–3 weeks; pupa, 4–5 weeks; and adult, 4–6 weeks for males and 4–8 weeks for females. Cephalic width as well as body width and length (mm were measured in the three instars, with the following results: first instar: 1.85– 2.04, 1.05–2.02, and 14.3–19.2, respectively; second instar: 3.3–3.95, 4.02–5.1, and 24–35, respectively; and third instar: 5.8–6.02, 6.1–7.6, and 56–67, respectively. The reproductive period of these insects was short and coincided with the rainy season (October–November, based on the results of weekly catches of insects using light traps in Caldono, Cauca (2° 81' N, 76° 55' W, 1450 m.a.s.l., and an annual pluvial precipitation of 2191 mm. To assess the economic impact of the insect, monthly samples were taken in quadrats (1 m2 and 25 cm deep in Quimbaya, Quindío (04° 38´ 02"; N, 75° 47´ 47";W, 1274 m.a.s.l., and an annual precipitation of 2000 mm. Results showed that 5 larvae/m2 produced total loss of maize and cassava plants less than 2 months old. Incidence ranged from 0 to 8 larvae/m2, showing an irregular distribution. The highest densities were detected in pastures and in cassava crops. Plots with a history of incidence should be closely monitored using light traps as an early warning system. The presence of larvae should be determined immediately after the October rains and a microbiological control treatment has to be applied as preventive measure. Levels of 4 larvas/m2 or above could exact soil removal

  2. Afloramiento de Azolla sp. presente en el humedal Carabalo (Valle del Cauca) Colombia: metabolitos secundarios y evaluación preliminar de toxicidad

    OpenAIRE

    Carabalí Isajar, Mary Lilián

    2014-01-01

    Introducción: El espejo de agua del humedal Carabalo, ubicado en el Valle del Cauca, se encuentra completamente cubierto por una planta flotante perteneciente al género Azolla, lo cual ha afectado sus procesos biológicos y en consecuencia, se ha notado una disminución en la abundancia de peces, base de alimentación y economía en la comunidad de Quinamayó (Valle del Cauca). La sobrepoblación de esta planta ha llevado a la comunidad quinamayoreña a utilizarla como alimento para la cría de ani...

  3. Análisis cualitativo del deterioro de la calidad del agua y la infección por Helicobacter pylori en una comunidad de alto riesgo de cáncer de estómago (Cauca, Colombia)

    OpenAIRE

    Claudia Patricia Acosta; John Alexander Benavides; Carlos Hernán Sierra

    2015-01-01

    Este estudio aborda aspectos de la salud ambiental de la población rural de Timbío (Cauca, Colombia) con relación al deterioro de la calidad del agua. La información se obtuvo mediante métodos de investigación participativa, relacionadas al manejo y uso del agua, fuentes de contaminación y percepción de la calidad del agua y su relación con la infección por Helicobacter pylori. Los resultados forman parte del análisis cualitativo de una primera fase de caracterización de la problemática hídri...

  4. Una mirada al origen y las propiedades de los suelos magnésicos en el Valle del Cauca-Colombia

    Directory of Open Access Journals (Sweden)

    Garcia O. A.

    2004-12-01

    Full Text Available Se estudiaron las relaciones Si/Mg y Ca/Mg, en tres transectos y 12 perfiles de suelos, con lluvias inferiores a 1400 mm anuales. Más de 15% de minerales ferromagnesianos en la fracción arena fueron garantía para la aparición de contenidos de Mg+2 mínimos de 5 Cmol (+/kg en todos los paisajes. Variaciones anuales de la precipitación entre 800 y 1400 mm no influyeron en la variabilidad del magnesio de 5 a 41 Cmol (+/kg. El Mg+2 aumentó en el sentido en que decreció la tasa de infiltración promedia. Los suelos con arcillas oxídicas acumularon SO4=, yeso en los poros y adolecieron de horizontes Bk; con influencia de piroclastos aumentaron Na+. Cuando presentaron Si / Mg > 5 tuvieron menores concentraciones relativas de Mg+2 y Ca+2, excepto en familias esmectítica y caolinítica. Las aguas de riego presentaron C.E. < 1 dS/m, la mayoría carbonato de sodio residual (CSR, y para casi todas se prevén aportes de magnesio al suelo. Hubo efecto específico en todos los paisajes; para Ca/Mg < 2 se atenuó cuando el contenido de materia orgánica fue similar a 5% o con mineralogías caoliníticas; con mineralogías micáseas el efecto se dio desde relaciones Ca/Mg 2-3. Valores de Ca+2 > 10 Cmol (+/kg y pH ­ 7.5 inhibieron la acumulación de Na+. ABSTRACT A sigh over the origin and properties of magnesic soils in Valle del Cauca-Colombia. They were studied as a function of Si/Mg and Ca/Mg relations in three transect and 12 soil profiles where rain precipitation was lower than 1400 mm. More than 15% of ferromagnesian minerals in sand fraction allows at least a minimum Mg+2 content of 5 Cmol (+/kg. Annual rain variations between 800 and 1400 mm had not influence in Mg+2 variability between 5 to 41 Cmol(+/kg. Mg+2 contents had a tendency to increase as well as medium infiltration rate decrease. Magnesic soils with oxidic clays in general allowed accumulation of S04= ion, gypsum in pore space, and lacking of Bk horizons; but with piroclastic

  5. Consumo energético, eficiencia de campo y cobertura vegetal en labranza-siembra de maíz en el Valle del Cauca, Colombia

    Directory of Open Access Journals (Sweden)

    Herrera G Oscar A.

    2005-03-01

    Full Text Available En el Centro de Investigaciones Palmira de la Corporación Colombiana de Investigación Agropecuaria, Corpoica, se realizó un estudio de auditoría energética en cuatro métodos de labranza-siembra (vertisol de maíz en rotación con algodón. El mayor consumo de energía fósil correspondió a labranza convencional (LC, en la cual más del 70% se invirtió en las labores de labranza primaria y secundaria, seguida de cincel vibratorio (CV con un 65% y de mulch-tiller (MT con 54%; siembra directa (SD sólo empleó combustible fósil en la operación de desbroce de la soca y en la siembra; LC requirió casi 4 veces más energía que SD, CV casi 3 veces más y MT 2.7 veces más; el costo del combustible estuvo en igual proporción, lo mismo que el costo ambiental; en LC, MT y CV el primer pase del implemento de labranza consumió entre 1.5 y 3 veces más energía que el segundo y tercer pases, en suelos tenaces como los vertisoles del CI Palmira. Los altos valores de eficiencia de campo en LC contrastaron con el elevado consumo energético, en comparación con SD, y éste mostró diferencias notorias con respecto a los demás métodos de labranza-siembra en lo relacionado con la conservación de la cobertura vegetal del suelo. ABSTRACT Energy consumption, field efficiency and on ground vegetal cover in corn till-planting systems on Valle del Cauca, Colombia. Corn-cotton energy audit in four tillage-planting systems was carried out at the Colombian Corporation of Agricultural Research Center branch Palmira. The highest consumption of fossil energy corresponded to conventional tillage (LC, in which more than 70% of this consumption corresponded to primary and secondary tillage, followed by vibratory chisel (CV with 65% and mulch-tiller (MT with 54%, whereas no-till planting (SD observed the lowest energy consumption, because it suppressed itself primary and secondary tillage and only used fossil fuel to prepare the soca of the previous

  6. Caracterización morfológica en árboles nativos de guayaba en el Valle del Cauca

    Directory of Open Access Journals (Sweden)

    Muñoz Jaime E.

    2005-12-01

    Full Text Available Se caracterizaron 53 accesiones de Psidium guajava, colectadas en 9 transectos del Valle del Cauca. En los descriptores cualitativos las accesiones se integraron en tres grupos que se diferenciaron por la forma del fruto. El 75% de los descriptores cuantitativos mostraron CV mayor al 24%. El 72.41% de la variación total de estos descriptores fue explicado en tres CP, que permitieron discriminar para variables de rendimiento del fruto, estructura del árbol y calidad del fruto. Abstract Morphological characteristics of guava in Cauca Valley, Colombia. 53 accesions were collected of Psidium guajava, in 9 transects of the Cauca Valley, these themselves were characterizates. In the descriptors qualitative the accesions were integrated in three groups that were differentiated for the form of the fruit. The 75% of the descriptors quantitative they showed greater VC to 24%. The 72.41% of the total variation of these descriptors, was explained in three PC, that permitted to discriminate for variables of performance of the fruit, structure of the tree and quality of the fruit. Keywords: Psidium guajava, accesions, descriptors quantitative, descriptors qualitative. Principal Component Analysis - PCA

  7. The social representation of drug trafficking like laborer optionAt first glance, the State of Baja California (Mexico) and the Department of Valle del Cauca (Colombia) do not have much in common. They belong to different countries and have significant di

    OpenAIRE

    Lilian Paola Ovalle

    2010-01-01

    At first glance, the State of Baja California (Mexico) and the Department of Valle del Cauca (Colombia) do not have much in common. They belong to different countries and have significant differences in their history and their social, cultural, political and economic structures. However these places have a commonality--namely the fact that for more than three decades they have become epicenters of drug trafficking. In both of these territories, trafficking groups and international business ne...

  8. Quantification of the macrofauna in a vertisol under different systems from handling in the Cauca Valley, Colombia

    International Nuclear Information System (INIS)

    Using the tropical soil biology and fertility (TSBF) methodology the biodiversity, the density and biomass of macrofauna was evaluated in a vertisol soil under four tillage systems and in a cocoa plantation with an undisturbed for more than 20 years. Soil under cocoa showed the highest values of biodiversity (47 u.t.) while mulch tiller treatment showed the highest density (122 ind. 0.062 m2) and direct seeding the highest value of biomass (5.44 g. 0.062 m2). Ants, Myriapods and earthworms exhibited greater level of population density (41 +/- 28; 15 +/- 8 and 8 +/- 5 ind. 0.062 m2, respectively) while the greatest contribution to biomass was made by earthworms and coleoptera population with 2.3 +/- 1.7 and 0.27 +/- 0.32 g. 0.062 m2. Soil under cocoa plantation and direct seeding presented the highest proportion of macrofauna at the top 5 cm (58.2 and 51.1 % respectively) while treatments with soil disturbance as mulch tiller, disk plowing and chisel plow the distribution of macrofauna was between 5 to 20 cm depth (55.8,53.7 and 46.2 %). this study evidenced the sensibility of the soil's macrofauna to different tillage systems. Macrofauna quantifying could be used to evaluate soil conditions under different management methods

  9. Puesta a prueba de un indicador sencillo de degradación en suelos histeréticos del Valle del Cauca, Colombia

    Directory of Open Access Journals (Sweden)

    Lozano Jaime

    2005-06-01

    hysteretic soils from Valle del Cauca-Colombia. This study was carried out in 2001 on five molisol and vertisol soils of the CIAT, it was used a nested georeferenced net of 68 sampling points located under logarithmic scheme at two depths: 1- at the surface and 2- at a zone of less penetration. This was the base to make the cartography of a Compaction Index and the main physical soil properties. The Compaction Index was estimated with the combination of soil bulk density and sample soil gravimetric moisture using a relation matrix created specifically to this aim. With conventional methodologies was evaluated four categories of soil physical characteristics: 1- hydraulic properties using hydraulic conductivity, infiltration rate, sorptivity, and the redistributing volumetric moisture using the database from “instant profile� method, 2- water retention capacity with the characteristic curve; 3- structural condition with modified “Yoder� method and 4- general physical conditions using texture, bulk density, organic matter, penetration resistance and pore distribution. In order to validate this compaction index as a simple soil degradation indicator was followed three routes: a correlation analysis that show the soil physical properties in each soil compaction-consistency map with units generated by geostatistics; a graphical study of the tendency of soil water redistribution curves and a discriminant multivariate analysis to prove the viability to convert the compaction index in a dozen of consistency classes. The proposed index proved to be a good indicator of soil physical conditions because of soil physical qualities decreased in soil compaction units. Key words: Compaction index, hydric soil properties, structural soil condition, soil water retention, geostatistics, hysteretic soil.

  10. Contaminación y toxicidad de las aguas residuales de las rallanderías del Norte del Cauca, Colombia

    OpenAIRE

    Sarriá Núñez, Helbert

    2011-01-01

    Este estudio se centra en los efectos producidos por la agroindustria de la yuca sobre los ecosistemas acuáticos receptores de sus vertidos. El proceso es llevado a cabo por pequeñas o medianas unidades de procesamiento que son conocidas comúnmente como “rallanderías” (RALL) localizadas en el departamento del Cauca, Las aguas residuales (AR) del proceso aportan una alta carga orgánica, expresada como DBO5 y DQO y además la presencia natural de compuestos glicosídicos con cianuro (CN). Los obj...

  11. El rol de los recursos locales en la evaluación de la agroindustria rural del almidon agrio de yuca en el departamento de cauca, Colombia

    OpenAIRE

    Viviana Sandoval; Ricardo Ruiz

    2006-01-01

    La producción de almidón agrio de yuca en el departamento del Cauca está conformada por un complejo sistema de agroempresas procesadoras, agricultores, intermediarios, empresas fabricadoras de equipos y organizaciones que prestan servicios de apoyo.  Los recursos locales como el saber-hacer, las redes de actores, el producto, las acciones colectivas, las condiciones agro-ecológicas específicas, son los factores dinamizadores que han permitido la evolución y crecimiento de esta compleja concen...

  12. Aproximación de la recarga de agua subterránea en el norte del Departamento del Cauca, Colombia

    OpenAIRE

    Cristo Facundo Pérez; Andrés Echeverri-Sánchez; Norberto Urrutia-Cobo

    2016-01-01

    Las aguas subterráneas representan una importante alternativa para el desarrollo de actividades socioeconómicas en regiones donde la oferta de agua superficial no satisface las necesidades o su calidad es deficiente. Sin embargo, su aprovechamiento debe estar en función del conocimiento de su oferta. El norte de Departamento del Cauca es una zona con un importante desarrollo agrícola e industrial, donde se viene presentando extracciones de aguas subterráneas sin conocimiento del volumen of...

  13. Lo “tecno-cultural” como concepto en la construcción de un producto turístico diferenciador para el departamento del Cauca (Colombia)

    OpenAIRE

    Andrés José Castrillón

    2005-01-01

    Con una presentación preliminar que ilustra las diversas etapas que han sido agotadas por los actores regionales del turismo a partir de 1999 en el marco de importantes proyectos actualmente en ejecución; se introduce, a manera de hipótesis, el concepto de lo tecnocultural en la construcción de un producto turístico diferenciador, en virtud de la escasa competitividad que para el Departamento del Cauca supone poseer una vocación sustentada en lo ecológico, lo étnico y lo cultural inmersa en e...

  14. Edad de la formación vijes en el pozo v3a, oligoceno del piedemonte oriental de la cordillera occidental, departamento del valle del cauca, colombia

    OpenAIRE

    Dueñas, Hernando; Navarrete, Rosa Esther; Mojica, Jairo; Pardo, Mauricio; Camargo, Roger

    2012-01-01

    Outcrops of the Vijes Formation are restricted to the Vijes and Mulaló areas, which are located in the northwestern part of the Valle del Cauca Basin. Based on its micro-paleontological content (palynomorphs and forams) an Oligocene age has been assigned for this Marine Unit for long time considered as an Eocene to Miocene Formation. The Vijes Formation, has a thickness close to 180 m. It is made up of limestones, dirty sandstones and calcareous siltstones, that allow to sub-divide it in four...

  15. Integrated exploration workflow in the south Middle Magdalena Valley (Colombia)

    Science.gov (United States)

    Moretti, Isabelle; Charry, German Rodriguez; Morales, Marcela Mayorga; Mondragon, Juan Carlos

    2010-03-01

    The HC exploration is presently active in the southern part of the Middle Magdalena Valley but only moderate size discoveries have been made up to date. The majority of these discoveries are at shallow depth in the Tertiary section. The structures located in the Valley are faulted anticlines charged by lateral migration from the Cretaceous source rocks that are assumed to be present and mature eastward below the main thrusts and the Guaduas Syncline. Upper Cretaceous reservoirs have also been positively tested. To reduce the risks linked to the exploration of deeper structures below the western thrusts of the Eastern Cordillera, an integrated study was carried out. It includes the acquisition of new seismic data, the integration of all surface and subsurface data within a 3D-geomodel, a quality control of the structural model by restoration and a modeling of the petroleum system (presence and maturity of the Cretaceous source rocks, potential migration pathways). The various steps of this workflow will be presented as well as the main conclusions in term of source rock, deformation phases and timing of the thrust emplacement versus oil maturation and migration. Our data suggest (or confirm) The good potential of the Umir Fm as a source rock. The early (Paleogene) deformation of the Bituima Trigo fault area. The maturity gap within the Cretaceous source rock between the hangingwall and footwall of the Bituima fault that proves an initial offset of Cretaceous burial in the range of 4.5 km between the Upper Cretaceous series westward and the Lower Cretaceous ones eastward of this fault zone. The post Miocene weak reactivation as dextral strike slip of Cretaceous faults such as the San Juan de Rio Seco fault that corresponds to change in the Cretaceous thickness and therefore in the depth of the thrust decollement.

  16. Malaria in the colombian regions of Uraba and Bajo Cauca, province of Antioquia: an overwiew to interpret the antimalarial therapeutic failure La malaria en Colombia, Antioquia y las zonas de Urabá y Bajo Cauca: panorama para interpretar la falla terapéutica antimalárica. Parte 2

    Directory of Open Access Journals (Sweden)

    Jaime Carmona Fonseca

    2004-01-01

    Full Text Available Problem: in the past 5 years we have studied the treatment response to antimalarials and their combinations in the Antioquia region (Turbo, Zaragoza and El Bagre municipalities. The interpretation and better understanding of the treatment outcome (adequate clinical response, early treatment failure or late treatment failure require further information since this response depends on host’s and parasite’s factors, independently of the characteristics of the antimalarial administered. Objectives: to define an adequate reference frame which allows for interpretation of results obtained during antimalarials treatment assessment studies. This would include demography, epidemiology, climatic and social-economic information about Colombia, Antioquia, the regions of Uraba, Bajo Cauca and the municipalities of Turbo and El Bagre. Methodology: research of secondary information (publications reports and internet resources, and some primary information (taken from Sistema de Vigilancia Epidemiológica de Antioquia (Sivigila of Dirección Seccional de Salud de Antioquia DSSA. Data about treatment response were primary information (produced by Grupo Malaria, Universidad de Antioquia, or obtained from other authors. With the gathered data, tables and graphs were produced and calculations were carried out using other variables. Results: the frequency of malaria is presented for Colombia during the period 1960-2002 and the results of the malaria eradication and control programs, and their failure, are described. Similarly, the frequency of malaria in Antioquia during 1959-2003 is discussed and presented in terms of incidence rates and parasite annual indexes (PAI. Non adjusted and adjusted rates and PAI were obtained, therefore adjusted rates are presented by exposed population, which is less of 20%. Adjusted results are 5-6 fold higher that non-adjusted values in Antioquia. However this is not true for the Uraba and Bajo Cauca regions, where 100% of the

  17. Análisis cualitativo del deterioro de la calidad del agua y la infección por Helicobacter pylori en una comunidad de alto riesgo de cáncer de estómago (Cauca, Colombia

    Directory of Open Access Journals (Sweden)

    Claudia Patricia Acosta

    2015-01-01

    Full Text Available Este estudio aborda aspectos de la salud ambiental de la población rural de Timbío (Cauca, Colombia con relación al deterioro de la calidad del agua. La información se obtuvo mediante métodos de investigación participativa, relacionadas al manejo y uso del agua, fuentes de contaminación y percepción de la calidad del agua y su relación con la infección por Helicobacter pylori. Los resultados forman parte del análisis cualitativo de una primera fase de caracterización de la problemática hídrica y sanitaria y su relación con enfermedades infecciosas emergentes y soluciones comunes, llevada a cabo entre noviembre de 2013 y agosto de 2014. Los resultados de esta investigación se discuten desde un enfoque ecosistémico de la salud humana, que reconoce la complejidad de los conflictos ambientales relacionados con el recurso hídrico y su impacto en la salud de las poblaciones. A través de la metodología empleada, este estudio permitió conocer y visualizar los problemas prioritarios y las causas frecuentes de la contaminación del recurso hídrico, para postular algunas soluciones a través de una agenda compartida con los actores sociales.

  18. Petroleum systems of the Middle Magdalena Valley, Colombia

    Energy Technology Data Exchange (ETDEWEB)

    Mora, C.; Cordoba, F.; Luna, O.; Sarmiento, L.F.; Rangel, A. [and others

    1996-08-01

    The petroleum systems of the Middle Magdalena Valley include 29 oil fields and numerous oil seeps with recoverable reserves of 3 billion barrels of oil. Based on API gravity, sulfur content, pristane/phytane index, carbon isotopic ratios of the saturated and aromatic hydrocarbon fractions, and biomarkers, at least two oil families occur within this province. Each oil family covers a different area. Based on stratigraphic occurrence, one oil family originated from the Tablazo Formation of Aptian age while the other oil family originated from the La Luna Formation of Cenomanian to Santonian age. Both of these rock units have high organic carbon contents and hydrogen indices indicative of petroleum source rocks. The primary reservoir rocks are the Tertiary sandstones of the La Paz, Esmeraldas, Mugrosa, and Colorado Formations. The La Cira Shale, a regional seal rock, is the uppermost part the Colorado Formation. Secondary reservoirs are limestones of the Tablazo, Rosablanca, and La Luna formations, and sandstones of the Lisama and Umir Formations. An Eocene unconformity separates the primary reservoir rocks above from the secondary reservoir rocks and active source rocks below. This unconformity places the primary reservoir rocks in angular discordance with the underlying active source rock intervals, forming the main plumbing system for migrating petroleum. Traps are related to pre-Andean and Andean folding and faulting. Overburden rocks are Cretaceous marine, Paleocene transitional, and Eocene-Pleistocene nonmarine sedimentary rocks. Thermal data and modeling indicates that the thermal history of the source rock intervals was sufficient to generate hydrocarbons during late Tertiary time.

  19. Ciclo de vida, importancia agrícola y manejo integrado de la chisa rizófaga Phyllophaga menetriesi Blanchard (Coleoptera: Melolonthidae, en Cauca y Quindío, Colombia

    Directory of Open Access Journals (Sweden)

    Luis Carlos Pardo-Locarno

    2007-01-01

    Full Text Available La biología e importancia agrícola de P. menetriesi, especie rizófaga, fue investigado en laboratorio y en cultivos del Cauca y Quindío (Colombia. El ciclo de vida fue anual, la duración de los estados (semanas fue: huevo 2-3, primer instar 3-4, segundo instar 6-8, tercer instar 20-25, prepupa 2-3, pupa 4-5, adulto macho 4-6 y adulto hembra 4-8. El tamaño corporal (mm por instar fue: primer instar anchura cefálica 1.85-2.04, anchura corporal 1.05-2.02 y la longitud 14.3-19.2, segundo instar 3.3-3.95, 4.02-5.1 y 24-35 respectivamente y en el tercer instar 5.8-6.02, 6.1-7.6, 56-67 respectivamente. El periodo reproductivo, estudiado mediante captura semanal en trampas de luz en Caldono, Cauca (2° 81'N y 76° 55'O, 1.450 msnm, precipitación pluvial 2.191 mm/anuales, fue corto, sincronizado con las lluvias de octubre-noviembre. El impacto económico, estudiado con muestreos mensuales de cuadrantes (1 m-2/25cm de profundidad en Quimbaya, Quindío (04° 38´ 02" N y 75° 47´ 47" O; 1.274 msnm; 2000 mm/anuales, mostró que cinco larvas m-2 ocasionaron pérdida total de plántulas de maíz y yuca menores de dos meses; la abundancia fluctuó desde cero hasta 8 larvas m-2, evidenciando distribución "parchosa" y mayores densidades en pastizal y yuca. En lotes con antecedentes de la plaga deben monitorearse los adultos con trampas de luz como aviso temprano, catear larvas después de las lluvias de octubre y aplicar control microbiológico preventivo; niveles de 4 o más larvas m-2 podrían conjugar remoción de suelo, uso localizado de control químico e incorporación de fitomasa para fomentar la población de chisas saprófagas, diversidad trófica y enemigos naturales.

  20. Aproximación de la recarga de agua subterránea en el norte del Departamento del Cauca, Colombia

    Directory of Open Access Journals (Sweden)

    Cristo Facundo Pérez

    2016-01-01

    Full Text Available Las aguas subterráneas representan una importante alternativa para el desarrollo de actividades socioeconómicas en regiones donde la oferta de agua superficial no satisface las necesidades o su calidad es deficiente. Sin embargo, su aprovechamiento debe estar en función del conocimiento de su oferta. El norte de Departamento del Cauca es una zona con un importante desarrollo agrícola e industrial, donde se viene presentando extracciones de aguas subterráneas sin conocimiento del volumen ofertado. El objetivo del presente estudio fue estimar la recarga del acuífero como herramienta para su gestión en las actividades desarrolladas en la región. En este sentido, la recarga anual del acuí - fero fue estimada mediante balance hídrico, partiendo de la definición de un volumen de control delimitado con la hidrogeología del acuífero, e identificando los componentes de recarga (precipitación, agua de riego, y caudal superficial de entrada y descarga (Evapotranspiración real, caudal de extracción por bombeo, y caudal superficial de salida. El volumen de recarga anual calculado fue de 56 x10 6 m 3 , indicando la dispo - nibilidad del recurso hídrico subterráneo para potencializar las actividades socioeconómicas en la zona, bajo una planeación optima del recurso.

  1. Evaluación de la mutagenicidad causada por metales pesados presentes en agua del río Cauca en la ciudad de Cali, Colombia

    Directory of Open Access Journals (Sweden)

    Aura H. Vivas

    2015-09-01

    Full Text Available Se evaluó la mutagenicidad del agua delrío Cauca debida a la presencia de metalespesados en la zona urbana de la Ciudadde Santiago de Cali, a partir de muestrastomadas en la temporada seca y lluviosaen el año 2013. Los metales se extrajeronpasando el agua por la resina AmberliteXAD-16. Las concentraciones de los metalespesados se midieron por absorción atómicay la mutagenicidad se evaluó por mediodel test de Ames, con las cepas TA98 yTA100 de Salmonella typhimurium con ysin activador enzimático S9. Los resultadosmostraron índices de mutagenicidad (IMpositivos (IM > 2,0 para muestras colectadasen temporada lluviosa en tres de los cincopuntos evaluados: puente El Hormiguero(IM = 3,6, desembocadura del CanalColector Sur (IM = 2,9 y desembocaduradel río Cali (IM = 2,7, todos con la cepaTA98 sin S9. Estos sitios presentaron a suvez las mayores concentraciones totales demetales pesados en sus extractos. El análisisde la variación espacio-temporal del índicemutagénico se realizó haciendo un análisis devarianza multifactorial del IM. Los resultadosencontrados indican que la época demuestreo contribuye significativamente a lavariabilidad del IM , mientras que los puntosde muestreo no.

  2. [Qualitative analysis of water quality deterioration and infection by Helicobacter pylori in a community with high risk of stomach cancer (Cauca, Colombia)].

    Science.gov (United States)

    Acosta, Claudia Patricia; Benavides, John Alexander; Sierra, Carlos Hernán

    2015-12-01

    This study looks at aspects of the environmental health of the rural population in Timbío (Cauca, Columbia) in relation to the deterioration of water quality. The information was obtained through participatory research methods exploring the management and use of water, the sources of pollution and the perception of water quality and its relation to Helicobacter pylori infection. The results are part of the qualitative analysis of a first research phase characterizing water and sanitation problems and their relation to emerging infectious diseases as well as possible solutions, which was carried out between November 2013 and August 2014. The results of this research are discussed from an ecosystemic approach to human health, recognizing the complexity of environmental conflicts related to water resources and their impacts on the health of populations. Through the methodology used, it is possible to detect and visualize the most urgent problems as well as frequent causes of contamination of water resources so as to propose solutions within a joint agenda of multiple social actors. PMID:26676599

  3. Total suspended particles (TSP) and breathable particles (PM10) in Aburra Valley, Colombia

    International Nuclear Information System (INIS)

    In the Aburra's valley, nor-western region of Colombia, inhabited by 3 million people, crossed by 400,000 vehicles; with the presence of establishments of industrial sectors: textile, foods and metal-mechanical; The concentrations of total suspended particles (PST) and breathable particles (PM10) were evaluated, during the period: December of 2000 to June of 2001. The determinations of PST and PM10 were performed in ten stations, distributed of north to the south, covering urban and rural zones with the municipalities of: Girardota, Bello, Medellin, Itagui, Sabaneta and Caldas. When analyzing relation PM10/PST, was that the best statistical correlations are located in the zones center and the south of the valley. In addition the increasing tendency in relation PM10/PST was observed, from 0.527 for the rural station Girardota (North), to 0.813 in the urban station Caldas (South). This gradient in relation PM10/PST apparently this related to the wind regime that predominates in the Valley of Aburra with direction the north-south, which causes that the fine particles migrate of north to the south, increasing relation PM10/PST in the same direction

  4. Diversity of arbuscular mycorrhizal fungi in a chrono-sequence of alluvial and degraded soils due to mining processes in bajo cauca antioqueno, Colombia

    International Nuclear Information System (INIS)

    Arbuscular mycorrhizal fungi (AMF) presence and diversity were evaluated in undisturbed and disturbed soils form alluvial mining processes. The soils belong to the Tropic Fluvaquent, Typical Dystropept, and Typical Paleudult sub-groups which corresponded to Low, Middle and High terraces, respectively, of the Cauca river at Taraza town. AMF propagules were multiplied in Leonard jars under glass house conditions using sterile substrate, modified Hoagland's solution and different fractions of soil used as sources of inoculum, which corresponded to the size of the spores. A first assay was made in maize (Zea mays) which allowed mycorrhizal colonization in roots but not spore production. In a second assay, in kudzu (Pueraria phaseoloides) AMF spores and colonized roots were obtained with the treatments corresponding to propagules obtained from high terrace and disturbed soil. These treatments presented a significant effect on kudzu yield (P?0,001) respect to the other treatments. The AMF spores of undisturbed and disturbed soils showed low infective capacity. Nevertheless, propagules of AMF were multiplied in trap cultures, which produced spores of four morpho types. One of these was identified as G. microagregatum. The polymorphism obtained by RAPD's made possible the differentiation of these morpho types with the primer OPA2. Similitude above 38% was achieved using UPGMA system. The results indicated that four morpho types belong to the genus Glomus, but they possibly belong to different species. Our results are promissory in the differentiation of native strains of AMF with low number of spores collected from soil samples in rehabilitation processes, which normally is unknown.

  5. Water quality analysis in rivers with non-parametric probability distributions and fuzzy inference systems: application to the Cauca River, Colombia.

    Science.gov (United States)

    Ocampo-Duque, William; Osorio, Carolina; Piamba, Christian; Schuhmacher, Marta; Domingo, José L

    2013-02-01

    The integration of water quality monitoring variables is essential in environmental decision making. Nowadays, advanced techniques to manage subjectivity, imprecision, uncertainty, vagueness, and variability are required in such complex evaluation process. We here propose a probabilistic fuzzy hybrid model to assess river water quality. Fuzzy logic reasoning has been used to compute a water quality integrative index. By applying a Monte Carlo technique, based on non-parametric probability distributions, the randomness of model inputs was estimated. Annual histograms of nine water quality variables were built with monitoring data systematically collected in the Colombian Cauca River, and probability density estimations using the kernel smoothing method were applied to fit data. Several years were assessed, and river sectors upstream and downstream the city of Santiago de Cali, a big city with basic wastewater treatment and high industrial activity, were analyzed. The probabilistic fuzzy water quality index was able to explain the reduction in water quality, as the river receives a larger number of agriculture, domestic, and industrial effluents. The results of the hybrid model were compared to traditional water quality indexes. The main advantage of the proposed method is that it considers flexible boundaries between the linguistic qualifiers used to define the water status, being the belongingness of water quality to the diverse output fuzzy sets or classes provided with percentiles and histograms, which allows classify better the real water condition. The results of this study show that fuzzy inference systems integrated to stochastic non-parametric techniques may be used as complementary tools in water quality indexing methodologies. PMID:23266912

  6. Soil thermal conductivity, organic matter, activity and microbial biomass in crops systems of passion fruit in Toro, Valle del Cauca, Colombia Conductividad térmica del suelo, materia orgánica, actividad y biomasa microbianas en sistemas de cultivo de maracuyá en Toro, Valle del Cauca

    Directory of Open Access Journals (Sweden)

    Pérez Jesús

    2007-03-01

    Full Text Available The study evaluated the relationship among soil thermal conductivity (λ organic matter, activity and microbial biomass. In three systems of passion fruit crop (ecological, transitional and conventional in the municipality of Toro, Valle del Cauca, Colombia. In samples taken at random in two depths (0-15 and 15-30 cm, biological properties microbial activity (C-CO2; microbial biomass (microbial C - fumigation, extraction - and physical and chemical properties (organic matter, pH, humidity, texture, apparent density, porosity (traditional methods and thermal conductivity of the soil (electrothermal method were measured. The results were analyzed program SAS through models of lineal regression, LSD and Duncan. There were highly significant differences in organic matter, activity and microbial biomass and thermal conductivity of the soil at both depths.The most notorious among ecological and conventional crops. High correlations of direct proportionality were calculated among thermal conductivity of the soil (λ and soil organic matter, for the three crop systems. The ecological crop increased these properties and activity and microbial biomass. Key words: Passiflora edulis Sims var flavicarpa, crop systems, soil thermal conductivity, organic matter, activity and microbial biomass.El estudio evaluó la relación entre la conductividad térmica del suelo (λ, la materia orgánica, la actividad y la biomasa microbianas. En tres sistemas de cultivo de maracuyá (agroecológico, transición y convencional en el municipio de Toro (Valle del Cauca, en nueve puntos por manejo se tomaron muestras al azar a dos profundidades (0-15 y 15-30 cm y se midieron propiedades biológicas: (actividad microbiana (C-CO2; biomasa microbiana (C microbiano –fumigación, extracción– y propiedades físicas y químicas (materia orgánica, pH, humedad, textura, densidad aparente, porosidad (métodos tradicionales y conductividad térmica del suelo (m

  7. Influencia de abonos verdes sobre la dinámica del nitrógeno en un typic haplustert del valle del cauca, colombia

    OpenAIRE

    Breno Augusto Sosa Rodrígues; Marina Sánchez de Prager; Oscar Eduardo Sanclemente Reyes

    2014-01-01

    Este estudio abordó el metabolismo del N, mediado por prácticas agroecológicas como los abonos verdes (AV), que incluyen leguminosas asociadas con rizobios -micorriza arbuscular y mejoran la nutrición de nitrógeno y fósforo. Se evaluó su influencia en la dinámica del nitrógeno de un Typic Haplustert en Candelaria (Colombia). En bloques completos al azar con seis repeticiones, se asoció como AV Mucuna pruriens L. var. Utilis - Zea mays L. var. ICA 305 (tratamiento 1- T1) y, la arvense nativa R...

  8. ESTUDIO DE TENDENCIAS DE LA PRECIPITACIÓN MENSUAL EN LA CUENCA ALTA-MEDIA DEL RÍO CAUCA, COLOMBIA.

    Directory of Open Access Journals (Sweden)

    OLGA L. PUERTAS OROZCO

    2011-01-01

    Full Text Available Estudiar las alteraciones en la oferta hídrica asociadas a la variabilidad o al cambio climático, es importante para ajustar adaptaciones frente a los cambios actuales y futuros, para esto se requiere comprender cambios históricos espacio-temporales en el patrón regional de lluvias. Para esto, se analizaron las tendencias de la precipitación mensual (1975-2006 en escalas de la lluvia total-anual, mensual-multianual y semianual-trimestral; mediante la aplicación de la prueba no-paramétrica de Mann-Kendall en 108 estaciones pluviométricas, ubicadas en la cuenca alta-media del río Cauca. En los resultados, la precipitación anual tuvo tendencias significativas con rango de variación desde -9.3% (-147,3 mm hasta +6.5% (+128,8 mm por decenio con promedio de -0.7% (-7,7 mm, para 24 estaciones. A escala trimestral, en Junio Julio-Agosto como periodo de menor pluviosidad al año, se encontró una disminución significativa de la precipitación, con promedio de -15% (-29 mm por decenio, en el 19% (21 de las estaciones analizadas. Se concluye, que existe cambios en el régimen intranual de la precipitación y, tras comparar las tendencias en la precipitación anual con variables geográficas (altitud, latitud y longitud, por encima de los 1500 msnm y en latitud menor a 3o52'N en la cordillera de los Andes, existe reducción generalizada en la lluvia. Dichos cambios, afectarán negativamente la generación y la disponibilidad de la escorrentía, que representa la oferta hídrica en la cuenca. En futuras investigaciones, deben estudiarse los cambios en la precipitación a escala diaria y vincularse actores locales, para el ajuste de adaptaciones frente a los cambios.

  9. Aplicación de diferentes fuentes de azufre en soya (Glycine max (L. Merrill en tres ordenes de suelos del Valle del río Cauca, Colombia, en condiciones de invernadero

    Directory of Open Access Journals (Sweden)

    Gómez L. Jairo A.

    1989-06-01

    Full Text Available Se utilizaron cuatro fuentes portadoras de S (sulfato de amonio, yeso, ácido sulfúrico y azufre micronizado en dosis de 20 y 40 kg de S/ha, aplicado en pre y al momento de la siembra , en tres órdenes de suelos (Vertisol, Inceptisol y Entisol del Valle geográfico del río Cauca, con la variedad ICA Tunía, como cultivo indicador. La unidad experimental estuvo constituida por bolsas de polietileno con dos kilos de suelo seco al aire, utilizando el horizonte Ap. El diseño experimental fue completamente al azar, el diseño de tratamientos fueron dos factoriales entrelazados con dos tratamientos adicionales, testigo absoluto (To, testigo comercial (Te. Este llevó fertilización basal con N, P, K, y doce tratamientos con fertilización basal más S (N, P, K +S. Al período de floración se cuantificó peso de materia seca, peso de nódulos, % S, % N Y N/S, a final de cosecha se determinó en el grano de soya % S, % N, N/ S, número de vainas, de granos, peso seco de grano y % de aceite. Los tres suelos respondieron a la fertilización de S. La fuente que presentó diferencias significativas con mayor incremento en producción de grano de soya, fue el azufre micronizado, en la dosis de 20 kg S/ha aplicado con anterioridad a la siembra.In order to fertilize, four sources of sulphur, ammonicum sulfate, gyppum, sulfuric acid and micronized sulphur, were used. Sulphur dose of 20 and 40 kg per hectare were applied before sowing and at the seeding moment, on three soils orders (Vertisol, Inceptisol and Entisol of the geographic Valley of the Cauca river, with the soybeam variety ICA Tunía. The experimental units were made of polyethilen bags with two kilograms of air dry soil, using the Ap. horizon. The experimental design was completyly ramdom. The treatment designs were two factorial s interlaced with two additional treatments, absolute indicator (To commercial indicator (Te. This carried basal fertilization with N, P, K and twelve treatments with

  10. Evaluation of the seroconversion as a response to rabies vaccination in dogs. The experience of the department of Valle del Cauca, Colombia, 2009 Evaluación de la seroconversión como respuesta a la vacunación antirrábica en perros. La experiencia del departamento del Valle del Cauca, Colombia 2009

    Directory of Open Access Journals (Sweden)

    Gloria Rey-Benito

    2011-06-01

    Full Text Available Introduction. The department of Valle del Cauca has been free of dog rabies for more than 20 years, however there are sylvatic rabies foci which threatens the health of people and pets. Rabies vaccination campaigns are carried out annually in all 42 municipalities of the department.
    Objectives. To measure the impact of dog vaccination on the basis of surrogates of adequate humoral immunorsponse, population parameters and how they correlate with variables inherent to the vaccination process and logistics. To discuss the epidemiological meaning of the results and the implications in public health.
    Materials and methods. Sera and information were obtained in all 42 municipalities in the department, from 569 rabies vaccinated dogs. Rabies neutralizing antibodies were measured by quantitative ELISA. Information was analyzed by EPI-INFO 6.0.
    Results. 9.1% and 25.1% of dogs were seronegative and did not elicit an adequate humoral immune response to vaccination respectively. Concentration of rabies neutralizing antibodies diminished gradually with the time after vaccination, and was associated to age and vaccine quality, however it was not associated to gender nor race.
    Conclusions. With the aim of increasing the rate of seropositive and adequately responsive dogs, results in this paper allow us to make the following recommendations: 1 Viable non expired rabies vaccines must only be used to immunize animals; 2 Two doses of rabies vaccine must be applied during the first six months of life of the puppies; 3 Buster immunizations must be applied at least every year; 4 Practices and processes related to rabies vaccination in private institutions must be watched by health authorities.
    Introducción. El departamento del Valle del Cauca ha estado libre de rabia canina por más de 20 años, aunque persisten focos de rabia silvestre amenazando a humanos y sus mascotas, por ello anualmente se realizan campañas de vacunación antirr

  11. Influencia de abonos verdes sobre la dinámica de nitrógeno en un Typic Haplustert del Valle del Cauca, Colombia

    Directory of Open Access Journals (Sweden)

    Breno Augusto Sosa Rodrígues

    2014-12-01

    Full Text Available Este estudio abordó el metabolismo del N, mediado por prácticas agroecológicas como los abonos verdes (AV, que incluyen leguminosas asociadas con rizobios -micorriza arbuscular y mejoran la nutrición de nitrógeno y fósforo. Se evaluó su influencia en la dinámica del nitrógeno de un Typic Haplustert en Candelaria (Colombia. En bloques completos al azar con seis repeticiones, se asoció como AV Mucuna pruriens L. var. Utilis - Zea mays L. var. ICA 305 (tratamiento 1- T1 y, la arvense nativa Rottboellia cochinchinensis L. como Tratamiento 2 - T2. En prefloración de M. pruriens se evaluó en el suelo el contenido de C orgánico (CO, N total (NT, nitrato, amonio, número de copias de gen amoA de las bacterias oxidantes de amonio (BOA, porosidad total del suelo (PPA, temperatura, flujo de gases con efecto invernadero: metano (CH4, dióxido de carbono (CO2 y óxido nitroso (N2O; la materia seca (MS y el contenido de C, N y P en tejidos vegetales. Se registraron concentraciones significativamente (p<0.05 altas de CO, NT, amonio y nitrato, en T2. BOA fue significativamente mayor en T1, coincidiendo con mayor PPA y menor temperatura del suelo. El CO2 atmosférico fue significativamente menor en T1, mientras que CH4 y N2O alcanzaron los valores más altos. Al finalizar el ensayo, AV en T1 aportó cerca de 4 t MS/ha, 1668.3 kg C/ha, 78.7 kg N/ha y 11.0 kg P/ha, con beneficio económico-social de 9.2 ton choclo/ha.

  12. Tracking evolution of Andean ranges bounding the Middle Magdalena Valley basin, Colombia

    Science.gov (United States)

    Nie, J.; Horton, B. K.; Mora, A.; Saylor, J.; Housh, T. B.; Rubiano, J.; Naranjo, N.

    2009-12-01

    The shortening history of the northern Andes is important to our understanding of convergent continental deformation. However, the timing of significant shortening-related uplift in the northern Andes is poorly constrained, with estimates ranging from early-Cretaceous to Miocene. Detrital zircon U-Pb ages from the middle Magdelena Valley basin in Colombia reveal two pronounced provenance shifts during the Cenozoic. The first shift occurs between lower and upper Paleocene strata, where age spectra switch from Proterozoic-dominated to Phanerozoic-dominated. We attribute this change to uplift-related exhumation of the Central Cordillera. The second shift occurs between middle-upper Eocene and upper Oligocene strata, where increased Grenville and diminished mid- Jurassic-Cenozoic zircon ages are consistent with initial shortening-related uplift of the Eastern Cordillera. The U-Pb results improve our understanding of the Cenozoic uplift/exhumation history of the Colombian Andes and provide a basis for future studies that consider the possible role of Andean uplift on Cenozoic climate.

  13. Reconocimiento de hongos con potencial benéfico asociados a la rizósfera de chontaduro (Bactris gasipaes H.B.K. en la region Pacifico del Valle del Cauca, Colombia

    Directory of Open Access Journals (Sweden)

    Sarria-Villa Greicy A.

    2011-12-01

    Full Text Available

    El chontaduro o pejibaye DBactris gasipaes H.B.K es el principal cultivo de los agroecosistemas de la selva :Gmeda  tropical de la costa pacifica colombiana. Esta región no aparece reerenciada en la literatura cientifica a pesar de su alta biodiversidad e importancia agroecológica. El objetivo de este estudio ue aislar % caracteriIar  morfológicamente  hasta  género,  hongos  presentes en la riIósera de B. gasipaes en dos sistemas de producción diferentes, localizados en Citronela y Sabaletas, Valle del Cauca, Colombia. Durante seis meses se tomaron muestras de raices % suelo riIos-rico en tres

    -pocas con distinta precipitación pluvial. Se planteó como :ipótesis que el tamaño % diversidad de la población de :ongos  son inMuenciados negativamente por la precipitación, %a que esta es la variable climOtica preponderante en la región del estudio. Los resultados mostraron que en la localidad de Citronela las poblaciones de hongos permanecieron estables durante los dos primeros muestreos, independiente de los cambios ocurridos en el r-gimen de lluvias entre -pocas. En Sabaletas, durante estos mismos periodos, los registros de lluvias ueron mOs altos, lo que pudo generar condiciones anaerobias en la rizósfera y limitar la expresión poblacional fúngica. Para el tercer muestreo, en ambas localidades aumentó la población % diversidad de g-neros de :ongos, lo que coincide con la

    -poca de alta precipitación pluvial % llenado de rutos en las palmas, condiciones que aparentemente favorecen la liberación de exudados en las raíces y consecuentemente el desarrollo de las poblacio- nes microbianas ben-ficas  de la riIósera.  Los g-neros de :ongos  aislados en este estudio ueron6 Trichoderma en ambas localidades, Fusarium y Rhizopus sólo en Citronela, Penicillium y Thielaviopsis sólo en Sabaletas. Estos

  14. Personal Docente del Nivel Primario. Series Estadisticas Basicas, Nivel Educativo: Cauca (Teaching Personnel in Primary Schools. Basic Statistics Series, Level of Education: Cauca).

    Science.gov (United States)

    Ministerio de Educacion Nacional, Bogota (Colombia). Instituto Colombiano de Pedagogia.

    This document provides statistical data on the distribution and education of teaching personnel working in the elementary schools of Cauca, Colombia, between 1958 and 1967. The statistics cover the number of men and women, public and private schools, urban and rural location, and the amount of education of the teachers. For overall statistics in…

  15. Análisis del comportamiento de la precipitación en el municipio de buenaventura (valle del cauca, colombia) en condiciones de desarrollo de los fenómenos el niño y la niña

    OpenAIRE

    Enriquez, Oscar; Guzmán, Anderson; Narváez, Germán

    2013-01-01

    Los fenómenos de El Niño y La Niña son causantes de muchas alteraciones en las variables climáticas, especialmente, en la precipitación. Este artículo da a conocer la variación que estos fenómenos generan en los patrones generales de la lluvia en el municipio de Buenaventura (Valle del Cauca, Colombia). De este modo, tras el análisis estadístico efectuado en diferentes series históricas de precipitación, la correlación de estas con índices oceánicos y atmosféricos, el cálculo de anomalías y l...

  16. The social representation of drug trafficking like laborer optionAt first glance, the State of Baja California (Mexico and the Department of Valle del Cauca (Colombia do not have much in common. They belong to different countries and have significant di

    Directory of Open Access Journals (Sweden)

    Lilian Paola Ovalle

    2010-11-01

    Full Text Available At first glance, the State of Baja California (Mexico and the Department of Valle del Cauca (Colombia do not have much in common. They belong to different countries and have significant differences in their history and their social, cultural, political and economic structures. However these places have a commonality--namely the fact that for more than three decades they have become epicenters of drug trafficking. In both of these territories, trafficking groups and international business networks have appropriated the region in order to frame their illegal project. This paper summarizes the findings of field research conducted during December 2008. Knowing and comparing the social representations of drug trafficking in these two territories, offers significant elements that help understand the integration processes and social penetration of drug trafficking in local contexts—and shed light on processes that have helped consolidate these practices as viable labor options.

  17. Análisis del comportamiento de la precipitación en el municipio de Buenaventura (Valle del Cauca, Colombia) en condiciones de desarrollo de los fenómenos El Niño y La Niña

    OpenAIRE

    Oscar Enriquez; Anderson Guzmán; Germán Narváez

    2014-01-01

    Los fenómenos de El Niño y La Niña son causantes de muchas alteraciones en las variables climáticas, especialmente, en la precipitación. Este artículo da a conocer la variación que estos fenómenos generan en los patrones generales de la lluvia en el municipio de Buenaventura (Valle del Cauca, Colombia). De este modo, tras el análisis estadístico efectuado en diferentes series históricas de precipitación, la correlación de estas con índices oceánicos y atmosféricos, el cálculo de anomalí...

  18. Agro-industria cañera y uso del agua: análisis crítico en el contexto de la política de agrocombustibles en Colombia

    Directory of Open Access Journals (Sweden)

    Mario Alejandro Pérez

    2011-12-01

    Full Text Available Este artículo muestra la relación entre las políticas económicas que han promovido al sector cañicultor y su impacto sobre el uso del agua en Colombia, haciendo énfasis en el Valle del Cauca, tanto en su función abastecedora como en la asimiladora. Además, examina la capacidad de soporte del territorio en el valle del río Cauca, asociado a la dinámica futura del cultivo de caña como resultado de las nuevas políticas de apoyo a los agrocombustibles.This work shows the relationship amongst economic policies that have promoted the sugar cane sector and its impact on the water resources supply and assimilatory functions in Colombia, with emphasis on the Valle del Cauca. Furthermore, it examines the land support capacity in the Cauca river valley related to the future dynamics of sugar cane crops as a result of the new policies supporting biofuels production.

  19. Stratigraphic implications of geochemistry of oils from Middle Magdalena Valley, Colombia

    Energy Technology Data Exchange (ETDEWEB)

    Illich, H.A.

    1983-03-01

    Seventeen oils from the Middle Magdalena Valley of Colombia were studied for the purpose of acquiring an improved view of the number and nature of hydrocarbon sources in the region. Examination of the chemistry of the oils and comparison of these data to oils from other basins lead to the conclusion that the Magdalena oils were derived from a single source or series of closely related sources. The sources for the oils are believed to be stratigraphic units deposited in marine environments. This conclusion is based mainly upon the isoprenoid, normal paraffin, and polycyclic alkane composition of the oils. A marine source virtually eliminates the possibility of the source occurring within the Tertiary section. Study of lithologic descriptions of the Cretaceous sediments stratigraphically underlying the Tertiary allows the nomination of several units that may have been the source for the oils: the La Luna, Simiti, and Paja formations. Each of these formations was deposited under anoxic marine conditions, and some of them contain enough organic debris to be described as carbonaceous. Differences in the bulk compositions of the oils are interpreted to be related to secondary alteration processes. The Middle Magdalena oils are derived from a single source or a series of closely related sources that are probably Cretaceous in age. Some of the oils have experienced secondary alteration that is believed to account for the range of bulk compositions observed in the region. The complicated source-reservoir relationships suggested by knowledge of the oil chemistry are undoubtedly contributory to protracted exploration history of the Magdalena.

  20. Colombia

    OpenAIRE

    World Bank

    2013-01-01

    Disasters resulting from natural hazards represent an important challenge for Colombia’s fiscal sustainability and stability. Colombia is one of the countries with the highest recurrence rate of disasters caused by natural hazards in Latin America. As the country’s population and economy continue to grow, so will the economic losses resulting from such events, an average of 600 disaster ev...

  1. A new green anole lizard of the "Dactyloa" clade (Squamata: Dactyloidae) from the Magdalena river valley of Colombia .

    Science.gov (United States)

    Velasco, Julián A; Hurtado-Gómez, Juan Pablo

    2014-01-01

    We describe a new species of Anolis from the Magdalena river valley in Colombia. The new species is morphologically similar to Anolis ibanezi and A. chocorum, but differs in body and dewlap color, and head scalation. We performed an exploratory multivariate analysis based on 15 morphological characteristics of the new species and A chocorum and found that differences between both species are mainly associated with head dimensions. A phylogenetic analysis based on morphological characters suggests that the new species is nested within the "Dactyloa" clade of Anolis. Finally, we discuss phylogenetic relationships and biogeographical affinities based in its distribution.  PMID:24872178

  2. La malaria en Colombia, Antioquia y las zonas de Urabá y Bajo Cauca: panorama para interpretar la falla terapéutica antimalárica. Parte 1

    Directory of Open Access Journals (Sweden)

    Jaime Cardona Fonseca

    2003-03-01

    Full Text Available Antecedentes y Problema: en 1998-2002 se investigó en Antioquia (Turbo, Zaragoza y El Bagre, la eficacia terapéutica de medicamentos y combinaciones antimaláricos. La interpretación de la respuesta terapéutica (adecuada, fallas precoz y tardía requiere información adicional para una mejor comprensión. Objetivo: definir un marco de referencia para interpretar los resultados de las evaluaciones de respuesta terapéutica antimalárica, constituido por información sobre el comportamiento de los programas antimaláricos en Colombia y por información demográfica, epidemiológica, climatológica y socioeconómica sobre el departamento de Antioquia, las regiones de Urabá y Bajo Cauca y los municipios de Turbo y El Bagre. Metodología: se usó información oficial secundaria y en menor cantidad, información primaria. Con los datos recogidos se construyeron cuadros y gráficos, y se hicieron cálculos sobre otras variables. Resultados: se describe la malaria (paludismo en Colombia en 1960-2002. En 2002, de los 43,707 millones de habitantes, 22,403 millones (51,17% están expuestos (41,88% con bajo riesgo. El P. vivax es la especie predominante (66% de los casos, excepto en la región del Pacífico, donde el P. falciparum causa el 75% de los casos. Hay brotes de malaria cada 2 a 7 años; la más intensa epidemia en la historia conocida ocurrió en 1998. La mortalidad ha pasado de 25 por cien mil en 1983 a 3 por cien mil en 2000. El índice parasitario anual (IPA ha estado alrededor de 8 por mil expuestos después de 1990, valor que es el cuádruple del existente en 1960-1970. La ineficacia del programa ha sido evidente casi desde su inicio en 1958 y la tendencia de la enfermedad siempre ha sido creciente. El fracaso de los programas gubernamentales antimalaria no tiene origen en fenómenos principalmente biológicos (resistencias del plasmodio a los medicamentos y del anofeles a los insecticidas, ni tampoco en las “condiciones de orden p

  3. HONGOS NATIVOS CON POTENCIAL DEGRADADOR DE TINTES INDUSTRIALES EN EL VALLE DE ABURRÁ, COLOMBIA NATIVE FUNGI WITH INDUSTRIAL DYE DEGRADING POTENTIAL IN THE ABURRÁ VALLEY, COLOMBIA

    Directory of Open Access Journals (Sweden)

    Xiomara Chanagá Vera

    2012-06-01

    Full Text Available Resumen. Los colorantes industriales poseen estructuras químicas estables que dificultan su tratamiento mediante procesos fisicoquímicos convencionales. En los últimos años, como una alternativa biotecnológica para la degradación de compuestos recalcitrantes, se han utilizado hongos ligninolíticos de diferentes grupos taxonómicos, que producen enzimas oxidantes de dichas moléculas. El aislamiento e identificación de especies fúngicas nativas con potencial decolorante, resulta promisorio para biorremediar efluentes provenientes de industrias textiles. En esta investigación se identificaron, con base en análisis de secuencias de las regiones ITS1 e ITS2 y 28S del ADNr, y por sus características morfológicas, cuatro hongos nativos aislados de material lignocelulósico colectado en el Valle de Aburrá (Antioquia, Colombia. Los aislamientos fueron identificados como el ascomycete Leptosphaerulina sp., y los hongos anamórficos Trichoderma viride (dos cepas y Aspergillus niger.Abstract. Synthetic dyes have stable chemical structures that hinder their treatment by conventional physicochemical processes. In recent years, as a biotechnological alternative for degradation of these recalcitrant compounds, wood degrading fungi of different taxonomic groups have been used. These fungi produced enzymes with oxidative potential for those molecules. The isolation and identification of ligninolytic fungi with potential for discoloration is promising for bioremediation of effluents from textile industries. In this research, we identified four native fungi isolated from lignocellulosic material in the Aburra Valley (Antioquia, Colombia. Identification was made based on sequence analysis of ITS1-ITS2 regions and 28S rDNA as well as morphological characteristics. The fungi were identified as the ascomycete Leptosphaerulina sp., and the anamorphic species Trichoderma viride (two strains and Aspergillus niger.

  4. El Cauca, un río "desenfrenadamente raudo"

    OpenAIRE

    Luis Horacio López Domínguez

    2014-01-01

    En sus cuencas de drenaje el río Cauca ha sido escenario de numerosos sucesos históricos del occidente de Colombia que se semejan al curso mismo, colmado de atavismos y de retos de supervivencia ambiental, marcados por catástrofes naturales y desafueros, desencadenados por una presión antrópica, impuesta esta por quienes han incursionado a sangre y fuego para explotar sus recursos por siglos. Historia del río marcada por altibajos sociales como su lecho, apenas consignados por cronistas de In...

  5. 3D multicomponent seismic characterization of a clastic reservoir in the Middle Magdalena Valley Basin, Colombia

    Science.gov (United States)

    Velasquez-Espejo, Antonio Jose

    The main goal of this research is to characterize the combined structural-stratigraphic trap of the Tenerife Field in the Middle Magdalena Valley Basin (MMVB), Colombia. For the first time in Colombia the structural and quantitative interpretation of modern three-dimensional multicomponent (3D-3C) seismic imaging enables a geometric description, a kinematic interpretation of the structural styles, and the facies distribution of the reservoir. A seismic petrophysics work-flow to better achieve the seismic well-tie. Edited and check-shot calibrated P-wave sonic logs were obtained and coefficients of the Gardner and Castagna equations were calibrated to match the density and shear-wave velocity depth trends for the basin. Seismic modeling was performed to evaluate the PP and PS seismic response of the reservoir interval (Mugrosa Formation). The structural interpretation methodology involves a 3D fault-correlation and horizon picking for both PP- and PS-PSTM data volumes. Geometric attributes such as coherence and curvature were used to enhance the structural discontinuities. The main unconformity of the Middle Eocene (MEU) was interpreted, and an attribute-assisted interpretation of the reservoir was conducted in detail. While P-wave data provided most of the structural interpretation, converted-wave data provide a better understanding of the faults. Traditionally, compressive thrust-propagation folds and tectonic inversion have been considered as the main mechanisms controlling the deformation in the MMVB. However, the new interpretation shown in this work provides a different structural concept that involves two major structural styles: 1. Under the MEU the Late Cretaceous and Early Paleocene deformation, dominated by east-verging thrust and partially inverted Mesozoic normal faults, is preserved. Associated folds exhibit a north-south strike, and their structural development is controlled by a long-lived structural element that dominates the area (the Infantas

  6. Aplicación de diferentes fuentes de azufre en soya (glycine max (l.) merrill) en tres ordenes de suelos del valle del río cauca, colombia, en condiciones de invernadero

    OpenAIRE

    Tanguado H., David A.; Gómez L., Jairo A.

    2010-01-01

    Se utilizaron cuatro fuentes portadoras de S (sulfato de amonio, yeso, ácido sulfúrico y azufre micronizado) en dosis de 20 y 40 kg de S/ha, aplicado en pre y al momento de la siembra , en tres órdenes de suelos (Vertisol, Inceptisol y Entisol) del Valle geográfico del río Cauca, con la variedad ICA Tunía, como cultivo indicador. La unidad experimental estuvo constituida por bolsas de polietileno con dos kilos de suelo seco al aire, utilizando el horizonte Ap. El diseño experimental fue compl...

  7. Aplicación de diferentes fuentes de azufre en soya (Glycine max (L.) Merrill) en tres ordenes de suelos del Valle del río Cauca, Colombia, en condiciones de invernadero

    OpenAIRE

    Gómez L. Jairo A.; Tanguado H. David A.

    1989-01-01

    Se utilizaron cuatro fuentes portadoras de S (sulfato de amonio, yeso, ácido sulfúrico y azufre micronizado) en dosis de 20 y 40 kg de S/ha, aplicado en pre y al momento de la siembra , en tres órdenes de suelos (Vertisol, Inceptisol y Entisol) del Valle geográfico del río Cauca, con la variedad ICA Tunía, como cultivo indicador. La unidad experimental estuvo constituida por bolsas de polietileno con dos kilos de suelo seco al aire, utilizando el horizonte Ap. El diseño experimental fue compl...

  8. De ecosistema a socioecosistema diseñado como territorio del capital agroindustrial y del Estado-nación moderno en el valle geográfico del río Cauca, Colombia

    Directory of Open Access Journals (Sweden)

    Hernando Uribe Castro

    2015-07-01

    Full Text Available El valle geográfico del río Cauca experimenta, desde tiempo atrás, sobre todo a partir de la década de 1950 del siglo XX, un proceso de transformación, debido a la expansión incesante de la frontera agrícola, dedicada a la caña de azúcar, que logró monopolizar todo este vasto territorio. Hoy se asientan sobre este valle trece ingenios azucareros distribuidos por toda la región. El argumento central del presente artículo es que dicho proceso de transformación fue dirigido, de modo intencional, por los agentes del capital privado agroindustrial y terrateniente, quienes, interesados en promover esa actividad agrícola, lograron cooptar las instituciones del Estado para llevar a cabo su proyecto territorial. Actores privados que, haciéndose agentes públicos, participaron de la construcción del estado regional. Actualmente, el valle geográfico del río Cauca se extiende desde el norte del departamento del Cauca —de modo preciso, desde Santander de Quilichao—, pasa por el Valledel Cauca hasta el departamento de Risaralda; es un territorio de capital agroindustrial y del Estado-nación moderno, que evidencia procesos de acumulación por desposesión, y por despojo social y ambiental, tanto de las comunidades humanas como del sistema viviente en general (animales, plantas y diversidad. La ampliación del cultivo de la caña de azúcar desplazó a las comunidades campesinas, estableció un modelo regional de ciudades intermedias y arrasó las particularidades ecosistémicas de los valles interandinos, como la presencia de importantes ecosistemas de humedal, en los que se encuentra una importante variedad biológica. Se trata de un territorio diseñado a partir de un discurso sobre el desarrollo regional,en el que parecen no aplicar los tres principios fundamentales de la Ley 388 de 1997, que se leen en su artículo 2, sobre la función social y ecológica de la propiedad, la prevalencia del interés general sobre

  9. Análisis del comportamiento de la precipitación en el municipio de Buenaventura (Valle del Cauca, Colombia en condiciones de desarrollo de los fenómenos El Niño y La Niña

    Directory of Open Access Journals (Sweden)

    Oscar Enriquez

    2014-01-01

    Full Text Available Los fenómenos de El Niño y La Niña son causantes de muchas alteraciones en las variables climáticas, especialmente, en la precipitación. Este artículo da a conocer la variación que estos fenómenos generan en los patrones generales de la lluvia en el municipio de Buenaventura (Valle del Cauca, Colombia. De este modo, tras el análisis estadístico efectuado en diferentes series históricas de precipitación, la correlación de estas con índices oceánicos y atmosféricos, el cálculo de anomalías y la caracterización específica de algunos de los eventos más importantes, ha sido posible establecer que en el municipio la lluvia presenta un comportamiento inverso al que normalmente se describe ante la ocurrencia de El Niño o La Niña en la región Pacífica colombiana.

  10. Efecto del corredor vial Buga-Buenaventura, ubicado en la reserva natural bosque de Yotoco (Valle del Cauca, Colombia) en la comunidad de mamíferos y fundamento para una propuesta de corredores artificiales

    OpenAIRE

    López Meneses Wendy Francy; Sánchez Palomino Pedro

    2006-01-01

    A través de algunas de las metodologías de campo estándares para el muestreo de pequeños mamíferos
    terrestres, voladores, medianos y grandes se determinaron los sitios de paso más frecuentes y las tendencias
    de movilidad de la fauna, por la carretera Buga-Buenaventura que pasa a través de la Reserva Natural Bosque de Yotoco, Valle del Cauca. La caracterización topográfica y fisionómica de la vegetación mostró un mosaico de diez ambientes asociados a la carretera los cual...

  11. POSSIBLE RAPID STRAIN ACCUMULATION RATES NEAR CALI, COLOMBIA, DETERMINED FROM GPS MEASUREMENTS (1996-2003

    Directory of Open Access Journals (Sweden)

    Trenkamp Robert

    2004-06-01

    Full Text Available Global Positioning System (GPS data from southern Central America and northwestern South America collected between 1991 and 1998 reveal wide plate margin deformation along a 1400 km length of the North Andes. Also associated with the oblique subduction of the Nazca plate at the Colombia-Ecuador trench is the 'escape' of the North Andes block (NAB. The NAB is delineated by the Bocono-East Andean fault systems and the Dolores Guayaquil Megasheare to the east, the South Caribbean deformed belt on the north and the Colombia-Ecuador trench and Panama on the west. Within the NAB many damaging crustal earthquakes have occurred which is most recently exemplified on January 25, 1999 (Mw = 6.1 Armenia earthquake. Preliminary analysis of recent occupations (2003 GEORED GPS of several previously observed (1996-2001 GPS sites suggest shear strain accumulation rates in the Cauca valley near Cali of approximately 2.1 x 10-7 yr-1 and 1.6 x 10-7 yr-1. These strain rates are measured within 2 Delaunay triangles with common vertices at Cali and Restrepo, which encompass areas, located north and west of Cali.Seismicity has been monitored in the Cauca Valley for the last 17 years by the "Observatorio Sismológico del Suroccidente" (OSSO since 1987 and by the Red Sismológica Nacional del INGEOMINAS since 1993. Their catalogs list numerous shallow earthquakes near Cali but nothing larger than magnitude 5. Historically, however, several large earthquakes are associated with the "Falla Cauca Almaguer" in locations both to the south and north of Cali in the Cauca valley. Preliminary calculations using the strain rates determined for these Delaunay triangles and a simplified Kostrov formula suggest possible decadal (30 - 90 years recurrence intervals for Mw = 6.0 - 6.3 earthquakes, centenary (90 - 900 years recurrence intervals for Mw = 6.4 - 6.9 earthquakes and millennial (900+ years recurrence intervals for Mw ≥ 7 earthquakes.

  12. Real-time health monitoring of civil infrastructure systems in Colombia

    Science.gov (United States)

    Thomson, Peter; Marulanda Casas, Johannio; Marulanda Arbelaez, Johannio; Caicedo, Juan

    2001-08-01

    Colombia's topography, climatic conditions, intense seismic activity and acute social problems place high demands on the nations deteriorating civil infrastructure. Resources that are available for maintenance of the road and railway networks are often misdirected and actual inspection methods are limited to a visual examination. New techniques for inspection and evaluation of safety and serviceability of civil infrastructure, especially bridges, must be developed. Two cases of civil structures with health monitoring systems in Colombia are presented in this paper. Construction of the Pereria-Dos Quebradas Viaduct was completed in 1997 with a total cost of 58 million dollars, including 1.5 million dollars in health monitoring instrumentation provided and installed by foreign companies. This health monitoring system is not yet fully operational due to the lack of training of national personnel in system operation and extremely limited technical documentation. In contrast to the Pereria-Dos Quebradas Viaduct monitoring system, the authors have proposed a relatively low cost health monitoring system via telemetry. This system has been implemented for real-time monitoring of accelerations of El Hormiguero Bridge spanning the Cauca River using the Colombian Southwest Earthquake Observatory telemetry systems. This two span metallic bridge, located along a critical road between the cities of Puerto Tejada and Cali in the Cauca Valley, was constructed approximately 50 years ago. Experiences with this system demonstrate how effective low cost systems can be used to remotely monitor the structural integrity of deteriorating structures that are continuously subject to high loading conditions.

  13. Phosphorus fractions in valle del cauca soils under different coffee cropping systems

    OpenAIRE

    Mejía Umaña, Diana Milena; Ángel Sánchez, Diego Iván; Menjivar Flores, Juan Carlos

    2012-01-01

    This study was conducted in the coffee growing zone of Valle del Cauca (Colombia) to evaluate the effect of planting coffee under different cropping systems: organic, conventional and organic-mineral, on soil phosphorus (P) fractions.  Adapted sequential fractionation methodology was done by the International Center of Tropical Agriculture.  The statistical analysis consisted of a Complete Randomized Block Design under a split plot arrangement with three treatments and three replications.  Th...

  14. Catalogue of Diptera of Colombia: an introduction.

    Science.gov (United States)

    Wolff, Marta; Nihei, Silvio S; Carvalho, Claudio J B De

    2016-01-01

    Colombia has an imposing natural wealth due to its topography has many unique characteristics as a consequence of having Caribbean and Pacific shores, as well as sharing part of the Amazon basin and northern Andes mountains. Thus, many natural and biological features are due to the convergence of three biogeographical regions: Pacific, Andes and Amazonia. The Andean uplift created a complex mosaic of mountains and isolated valleys, including eleven biogeographical provinces (Morrone 2006). The Andes dominate the Colombian topography and cross the country south to north. There are three mountain ranges (Western, Central, and Eastern) with a maximum elevation of 5,775 m, and an average elevation of 2,000 m. The Magdalena and Cauca River valleys separate these ranges, that along with the Putumayo and Caquetá Rivers, the Catatumbo watershed, the Darién, Pique Hill, the Orinoquia Region (with its savannas), the Amazon region (with tropical rainforests), and some lower mountain ranges (Macarena and Chiribiquete), have generated the conditions for very high levels of endemism. This variety of conditions has resulted in an extremely diverse plant and animal biota, and in which 48% of the nation remains unexplored. PMID:27395251

  15. Wage disparities and internal rate of return to private education teachers at the University of Cauca

    Directory of Open Access Journals (Sweden)

    Andrés Mauricio Gómez Sánchez

    2015-06-01

    Full Text Available This document aims to find the internal rate of return to private education from teachers of Universidad del Cauca (Popayan, Colombia controlled by a set of social and economic variables. To achieve this, econometric models, exempt of endogeneity problems and sample selection biases, are built, as it includes academic productivity of teachers as an instrumental variable and additionally has population data. The results show, among many others, that the overall rate of return is lower for university professors compared with those found for all Colombia, and as it is a national and global pattern, this rate is lower for women than for men.

  16. Percepciones de los efectos de la implementación del Sistema General de Seguridad Social en Salud sobre las acciones de control de tuberculosis en el Valle del Cauca, Colombia

    OpenAIRE

    Gustavo Alonso Cabrera; Janeth Mosquera; Rocío Carvajal

    2004-01-01

    Background: The health sector reform in Colombia had a deep effect on public health programmes. Changes on organizative structure and intervention activities for Tuberculosis control (TBC), have been caused by the emergence of new actors involved in health services delivery; design of new health plans; responsibilities diversification and their vagueness; and system decentralisation. Objective: Known perceptions of key actors of TBC control about effects generated by Colombian Health Secto...

  17. Basin development and tectonic history of the Llanos Basin, Eastern Cordillera, and Middle Magdalena Valley, Colombia

    Energy Technology Data Exchange (ETDEWEB)

    Cooper, M.A. [PanCanadian Petroleum, Calgary, Alberta (Canada); Addison, F.T.; Alvarez, R. [BP Exploration Ltd., Bogota (Colombia)] [and others

    1995-10-01

    The Middle Magdalena Valley, Eastern Cordillera, and Llanos basin constituted a major regional sedimentary basin from the Triassic to the middle Miocene. Basin development began during the Triassic to the earliest Cretaceous with a synrift megasequence related to the separation of North and South America in the proto-Caribbean. The synrift megasequence began with deposition in a continental environment that became paralic and shallow marine in the Early Cretaceous. Basin development continued into the Cretaceous in a back-arc setting east of the Andean subduction zone. The back-arc megasequence was dominated by shallow-marine sedimentation and produced an excellent regional source rock during the Turonian-Coniacian. Marine deposition was abruptly terminated during the early Maastrichtian due to the final accretion of the Western Cordillera.

  18. Caña de azúcar en Colombia

    Directory of Open Access Journals (Sweden)

    Ramos Gómez, Oscar Gerardo

    2005-04-01

    Full Text Available This article studies the sugar industry in Colombia, mainly in the Cauca Valley. The analysis is focused on the technical evolution undergone since its inception and the way in which a «sugar culture» evolved. This work also studies the participation of «hacendados» and croppers during the Independence period and the formation of republican oligarchies, their adaptation to the economy modernization processes in the 20th Century, as well as the State intervention and the associative mechanisms the sector used to confront the 1930 crisis. These mechanisms helped to expand the sector. Finally the recent performance of the sugar industry is analyzed, mainly its growth in the seventies and the present efforts at competitiveness, environmental impact and situation in the world trade.

    Este artículo analiza la industria azucarera en Colombia, sobre todo en el Valle del Cauca, su evolución técnica desde sus orígenes y el modo en que se fue configurando una cultura de la caña de azúcar. Además, estudia la participación de los hacendados y cultivadores en la independencia y la formación de las oligarquías republicanas, su adaptación a la modernización de la economía nacional en el siglo XX y la intervención el Estado y los mecanismos asociativos con que hizo frente el sector a la crisis de 1930 y que dieron lugar a una notable expansión del mismo. La parte final del texto explora el desempeño reciente de dicha actividad, su fuerte crecimiento en el decenio de 1970 y sus actuales esfuerzos por mejorar su competitividad, impacto medioambiental y posición en el comercio mundial.

  19. Water Grabbing in the Cauca Basin: The Capitalist Exploitation of Water and Dispossession of Afro-Descendant Communities

    Directory of Open Access Journals (Sweden)

    Irene Vélez Torres

    2012-06-01

    Full Text Available This article examines water grabbing in the Alto Cauca in Colombia as a form of accumulation through ethnicised and racialised environmental dispossession in the capitalist system. Characterised by privatisation and historical trends of exclusion, this violent accumulation model has shaped a particular form of environmental racism leading to negative impacts experienced in historically marginalised Afro-descendant local communities. Analyzing two development projects in the upper watershed of the Cauca river – the Agua Blanca Irrigation District Project and a Project for Diverting the River Cauca – the article concludes that many actors are responsible for the negative effects of the regional development model. These include the state, national and foreign private companies, and powerful international economic stakeholders.

  20. Caracterización molecular con marcadores aflp’s de los biotipos de spodoptera frugiperda (lepidoptera: noctuidae) pertenecientes a los departamentos de Córdoba, Meta y Valle del Cauca, Colombia

    OpenAIRE

    Lobo Hernández, Mariela Isabel

    2012-01-01

    Spodoptera frugiperda (Lepidoptera, Noctuidae) (J. E. Smith) es una polilla que se ha diferenciado genéticamente en dos biotipos denominados “maíz” y “arroz” en todo el Hemisferio Occidental. En Colombia, particularmente en el departamento del Tolima, una investigación anterior se basó en la identificación de los biotipos de este insecto con el uso de una PCR-RFLP del gen COI y una PCR del gen FR como marcadores diagnóstico de la especie, sin embargo, dada la baja variabilidad genética de est...

  1. El Cauca, un río "desenfrenadamente raudo"

    Directory of Open Access Journals (Sweden)

    Luis Horacio López Domínguez

    2014-02-01

    Full Text Available En sus cuencas de drenaje el río Cauca ha sido escenario de numerosos sucesos históricos del occidente de Colombia que se semejan al curso mismo, colmado de atavismos y de retos de supervivencia ambiental, marcados por catástrofes naturales y desafueros, desencadenados por una presión antrópica, impuesta esta por quienes han incursionado a sangre y fuego para explotar sus recursos por siglos. Historia del río marcada por altibajos sociales como su lecho, apenas consignados por cronistas de Indias y por registros documentales del acontecer fluvial, visible a tramos, en archivos, crónicas lugareñas y por la exhumación arqueológica amenazada por una guaquería sin sosiegos.

  2. Origen, desarrollo, y descripción de los tipos de gallina "criolla" existentes en varios municipio del Valle del Cauca

    Directory of Open Access Journals (Sweden)

    Muñoz F. Jaime E.

    1990-06-01

    Full Text Available Se plantean argumentos que respaldan la hipótesis de la existencia de la gallina doméstica en América del Sur antes de su descubrimiento. Con el establecimiento de colonias se introdujeron tipos europeos para el consumo de parte de la población. Se explica cómo se generó tecnología apropiada, produciéndose excedentes para exportar antes de 1950. Se comenta el fuerte cambio que sufre la gallina cultura en el Siglo XX con las primeras importaciones, creándose así una dependencia tecnológica. Se describen 11 tipos de gallina "criolla" que existen en el valle del Cauca, y se mencionan algunos ajustes fisiológicos y anatómicos que favorecen un mejor comportamiento de la gallina "criolla"; se discuten y proponen elementos para la creación de un banco de germoplasma con estas aves.There are arguments that favorate the hypotesis that the domestic hen lived in South America before its discovery. There was introduction of European types when the colonies settled. Through apropiate technology there was enough product for exports before 1950. Because of the first imports there was a strong change for the poultry production in the XX Century because of that a technological dependence was introduced. There are 11 diferent types of country hens in the Cauca Valley. Some phisiological and anatomical adjustements help a better development of the country hen in Colombia. This study proposes some elements to create a bank of germplasm with country hens.

  3. Cerambycidae (Coleoptera da Colômbia. V. Lamiinae com unhas tarsais divergentes Cerambycidae (Coleoptera of Colombia. V. Lamiinae with divergent tarsal claws

    Directory of Open Access Journals (Sweden)

    Maria Helena M. Galileo

    2003-06-01

    Full Text Available New species described from Colombia: Amphicnaeia interrupta sp. nov., from Cauca; Adetus tayronus sp. nov., from Magdalena; A. aberrans sp. nov., from Santander; Parmenonta albosticta sp. nov., from Cundinamarca; Jamesia bella sp. nov., from Cauca. New records for nine species of Colombian Lamiinae (Apomecynini, Agapanthiini, Onciderini are given.

  4. Efecto del corredor vial Buga-Buenaventura, ubicado en la reserva natural bosque de Yotoco (Valle del Cauca, Colombia en la comunidad de mamíferos y fundamento para una propuesta de corredores artificiales

    Directory of Open Access Journals (Sweden)

    López Meneses Wendy Francy

    2006-12-01

    Full Text Available A través de algunas de las metodologías de campo estándares para el muestreo de pequeños mamíferos
    terrestres, voladores, medianos y grandes se determinaron los sitios de paso más frecuentes y las tendencias
    de movilidad de la fauna, por la carretera Buga-Buenaventura que pasa a través de la Reserva Natural Bosque de Yotoco, Valle del Cauca. La caracterización topográfica y fisionómica de la vegetación mostró un mosaico de diez ambientes asociados a la carretera los cuales se asociaron con los puntos captura, de observación y de atropellamiento. Se encontró que individuos de Melanomys caliginosus, Oryzomys talamancae, Rhipidomys mastacalis y Marmosa robinsoni, recapturados en más de tres ocasiones, tienden a moverse paralelamente a la carretera, sin ninguna evidencia de cruce. A pesar de que no hubo recapturas de individuos de las especies de mamíferos voladores Anoura cauddifer, Artibeus jamaicensis, Artibeus sp., Carollia brevicauda, Desmodus rotundus, Glosophaga Soricina, Sturnira luisi y Myotis riparius se puede afirmar que cruzan indiferentemente la carretera, viven en los desagues bajo esta y algunos forrajean en el borde. Particularmente Myotis riparius se ve atraída por los insectos que llegan por efecto de la luz vehicular. Los mamíferos medianos y grandes Cebus capucinus, Alouatta seniculus, Potos flavus, Aotus sp., Bradypus variegatus y Choloepus hoffmanni, forrajean en el día y en la noche cerca del borde, algunos individuos de Cebus capucinus y Alouatta seniculus fueron vistos cruzando la carretera del fragmento pequeño al grande. La fragmentación de hábitat ocasionada por dicha carretera es evidente y está ocasionando un aislamiento total en las especies de pequeños mamíferos y genera peligro de atropellamiento para algunas especies de murciélagos y monos que la cruzan. Ambientes hostiles como helechales, pastizales, cañaduzales y deslizamientos penetran cada vez más hacia el interior de cada

  5. Water Grabbing in the Cauca Basin: The Capitalist Exploitation of Water and Dispossession of Afro-Descendant Communities

    OpenAIRE

    Irene Vélez Torres

    2012-01-01

    This article examines water grabbing in the Alto Cauca in Colombia as a form of accumulation through ethnicised and racialised environmental dispossession in the capitalist system. Characterised by privatisation and historical trends of exclusion, this violent accumulation model has shaped a particular form of environmental racism leading to negative impacts experienced in historically marginalised Afro-descendant local communities. Analyzing two development projects in the upper watershed of...

  6. Percepciones de los efectos de la implementación del Sistema General de Seguridad Social en Salud sobre las acciones de control de tuberculosis en el Valle del Cauca, Colombia

    Directory of Open Access Journals (Sweden)

    Gustavo Alonso Cabrera

    2004-01-01

    Full Text Available Background: The health sector reform in Colombia had a deep effect on public health programmes. Changes on organizative structure and intervention activities for Tuberculosis control (TBC, have been caused by the emergence of new actors involved in health services delivery; design of new health plans; responsibilities diversification and their vagueness; and system decentralisation. Objective: Known perceptions of key actors of TBC control about effects generated by Colombian Health Sector Reform implementation. Methods: A qualitative case study was carried out. Information was obtained through semi-structured interviews. In total, 15 key health officials responsable for tuberculosis control at national, state and local level were interviewed. Results: The most relevant negative effects of the implementation of Health Sector Reform on TBC control programme were: lack of political will; corruption in resources management; poor managerial and technical skills; deficiency in government supervision activities at local level; inadequacy of the government fulfilment of its administrative and financial obligations. Diversification of financial resources was pointed out as a facilitating factor, because of the increased allocation of resources for programme control. Discussion: A perceived reduction of the regulative and control role of the government in the operation of the Health System and on the TBC was the main finding of the study. Introduction of new actors on health services delivery and the increased resource allocation to TBC control did not produce the expected positive effects, and quantity and quality of tuberculosis actions were reduced.

  7. Comunidad prehispánica de El Cerrito, Valle del Cauca: medio ambiente, prácticas funerarias y condiciones de vida

    OpenAIRE

    Rodríguez Cuenca, José Vicente; Blanco, Sonia; Botero Zuluaga, Pedro José

    2005-01-01

    Este libro constituye un esfuerzo mancomunado del programa «Recuperación de memoria histórica y ambiental regional», de la comunidad local, de la empresa privada, de la Alcaldía Municipal de El Cerrito (Valle del Cauca), y de la comunidad científica representada por el Instituto para la Investigación y la Preservación del Patrimonio Cultural y Natural del Valle del Cauca (Insiva) y la Universidad Nacional de Colombia. Gracias a esta acción colectiva, un grupo de investigadores y estudiantes d...

  8. Historiografía empresarial e industrial sobre el valle de cauca, 1950-2007

    OpenAIRE

    Julio Cesar Zuluaga Jimenez

    2012-01-01

    El objetivo del artículo es elaborar un estado de la cuestión acerca de la historiografía empresarial sobre el Valle del Cauca (Colombia). Para alcanzar este objetivo se elucidará el estado cuantitativo de esta historiografía sectorial, atendiendo a siete categorías: tipos de publicación, periodos de publicación, temáticas, espacios, periodos históricos, autores y disciplinas. De igual manera, se presenta un estado cualitativo donde se analizan los problemas, hipótesis y evidencia empírica de...

  9. Creencias sobre caries e higiene oral en adolescentes del Valle del Cauca.

    OpenAIRE

    Jorge Eduardo Tascón; Gustavo Alonso Cabrera

    2009-01-01

    Objetivo: Conocer las creencias que sobre caries e higiene oral tienen los adolescentes escolarizados del departamento del Valle del Cauca, Colombia. Método: Se utilizó el Modelo de Creencias en Salud como referente en un estudio descriptivo de corte transversal efectuado en 38 de los 42 municipios del departamento. Se seleccionó una muestra de 5,400 adolescentes matriculados en instituciones educativas públicas y privadas por muestreo probabilístico, trietápico, estratificado y de conglomer...

  10. Indicador mensual de actividad económica (IMAE) para el Valle del Cauca

    OpenAIRE

    Pavel Vidal Alejandro; Lya Paola Sierra Suárez; Johana Sanabria Dominguez; Jaime Andres Collazos Rodríguez

    2015-01-01

    En el presente trabajo se lleva a un contexto regional la metodología de Stock y Watson (1991), usualmente aplicada en la construcción de indicadores de actividad económicas a nivel macroeconómico. A partir de siete series históricas claves del departamento del Valle del Cauca en Colombia, en el período enero del 2000 a marzo de 2015, se construyó un indicador coincidente mensual de actividad económica (IMAE). Para ello se estimó, mediante el filtro de Kalman, un factor común a todas las vari...

  11. Kinematic evolution of Andean fold-thrust structures along the boundary between the Eastern Cordillera and Middle Magdalena Valley basin, Colombia

    Science.gov (United States)

    SáNchez, Javier; Horton, Brian K.; Tesón, Eliseo; Mora, AndréS.; Ketcham, Richard A.; Stockli, Daniel F.

    2012-06-01

    Surface and subsurface data support a kinematic reconstruction of Cenozoic fold-thrust deformation along the Eastern Cordillera-Magdalena Valley transition in Colombia. The La Salina fault (LSF) marks the boundary between west-vergent Eastern Cordillera structures and hinterland deposits of the Middle Magdalena Valley basin. Apatite fission track and (U-Th)/He thermochronological results for the west-directed LSF reveal initial hanging wall exhumation during middle Eocene-early Oligocene (45-30 Ma) shortening, renewed exhumation in the early middle Miocene (18-12 Ma), and accelerated late Miocene-Pliocene (12-3 Ma) exhumation. Vitrinite reflectance data suggest maximum burial of 4-6 km, helping constrain Cenozoic basin architecture. Mapping of the LSF reveals hanging wall Cretaceous-Eocene rocks in a broad anticline-syncline pair with limited faulting and footwall Eocene-Quaternary basin fill in a complex series of tight thrust-related folds. Limited displacement along the westernmost (frontal) thrust suggests that shortening is largely accommodated by east-directed thrusting within a broader triangle zone of a passive-roof duplex (and probable minor strike-slip deformation). In the preferred kinematic restoration, the most recent phase of shortening to transpressional deformation represents out-of-sequence reactivation of the LSF consistent with irregular crosscutting relationships among footwall structures. Earliest exhumation by 45-30 Ma in the Eastern Cordillera fold-thrust belt is correlated with increased sedimentary lithic fragments and high compositional maturity in sandstones of the adjacent Magdalena Valley basin. Exhumation since ˜15 Ma coincided with decreased compositional maturity and elevated accumulation rates for the Real Group. The compositional provenance shifts are attributed to westward advance of fold-thrust deformation into the proximal (eastern) segments of the Magdalena Valley basin.

  12. Depositional and provenance record of the Paleogene transition from foreland to hinterland basin evolution during Andean orogenesis, northern Middle Magdalena Valley Basin, Colombia

    Science.gov (United States)

    Moreno, Christopher J.; Horton, Brian K.; Caballero, Victor; Mora, Andrés; Parra, Mauricio; Sierra, Jair

    2011-10-01

    The Central Cordillera and Eastern Cordillera of the northern Andes form the topographic flanks of the north-trending Magdalena Valley Basin. Constraining the growth of these ranges and intervening basin has implications for Andean shortening and the transformation from a foreland to hinterland basin configuration. We present sedimentological, paleocurrent, and sandstone petrographic results from Cenozoic type localities to provide insights into the tectonic history of the northern Middle Magdalena Valley Basin of Colombia. In the Nuevo Mundo Syncline, the mid-Paleocene transition from marine to nonmarine deposystems of the Lisama Formation corresponds with a paleocurrent shift from northward to eastward transport. These changes match detrital geochronological evidence for a contemporaneous shift from cratonic (Amazonian) to orogenic (Andean) provenance, suggesting initial shortening-related uplift of the Central Cordillera and foreland basin generation in the Magdalena Valley by mid-Paleocene time. Subsequent establishment of a meandering fluvial system is recorded in lower-middle Eocene strata of the lower La Paz Formation. Eastward paleocurrents in mid-Paleocene through uppermost Eocene fluvial deposits indicate a continuous influence of western sediment source areas. However, at the upper middle Eocene (˜40 Ma) boundary between the lower and upper La Paz Formation, sandstone compositions show a drastic decrease in lithic content, particularly lithic volcanic fragments. This change is accompanied by a facies shift from mixed channel and overbank facies to thick, amalgamated braided fluvial deposits of possible fluvial megafans, reflecting changes in both the composition and proximity of western sediment sources. We attribute these modifications to the growing influence of exhumed La Cira-Infantas paleohighs in the axial Magdalena Valley, features presently buried beneath upper Eocene-Quaternary basin fill along the western flank of the Nuevo Mundo Syncline. In

  13. Cartografía social como metodología participativa y colaborativa de investigación en el territorio afrodescendiente de la cuenca alta del río Cauca

    DEFF Research Database (Denmark)

    Velez Torres, Irene; Rátiva-Gaona, Sandra; Varela-Corredor, Daniel

    2012-01-01

    This article explores the opportunities and challenges given by social cartography as a participatory and collaborative methodology to characterize the socio-environmental conflicts in three areas of the upper basin of the Cauca River, Colombia. The text is organized in five parts: (i) introduction...

  14. Modeling Soil Sodicity Problems under Dryland and Irrigated Conditions: Case Studies in Argentina and Colombia

    Science.gov (United States)

    Pla-Sentís, Ildefonso

    2014-05-01

    Salt-affected soils, both saline and sodic, my develop both under dryland and irrigated conditions, affecting negatively the physical and chemical soil properties, the crop production and the animal and human health.Among the development processes of salt-affected soils, the processes of sodification have been generally received less attention and is less understood than the development of saline soils. Although in both of them, hydrological processes are involved in their development, in the case of sodic soils we have to consider some additional chemical and physicochemical reactions, making more difficult their modeling and prediction. In this contribution we present two case studies: one related to the development of sodic soils in the lowlands of the Argentina Pampas, under dryland conditions and sub-humid temperate climate, with pastures for cattle production; the other deals with the development of sodic soils in the Colombia Cauca Valley, under irrigated conditions and tropical sub-humid climate, in lands used for sugarcane cropping dedicated to sugar and ethanol production. In both cases the development of sodicity in the surface soil is mainly related to the effects of the composition and level of groundwater, affected in the case of Argentina Pampas by the off-site changes in dryland use and management in the upper zones and by the drainage conditions in the lowlands, and in the case of the Cauca Valley, by the on-site irrigation and drainage management in lands with sugarcane. There is shown how the model SALSODIMAR, developed by the main author, based on the balance of water and soluble componentes of both the irrigation water and groundwater under different water and land management conditions, may be adapted for the diagnosis and prediction of both problems, and for the selection of alternatives for their management and amelioration.

  15. SISAV: crea comunidades virtuales para la gestión del conocimiento del AGRO del Valle del Cauca

    OpenAIRE

    Montaño de Mayolo, Piedad

    2004-01-01

    This article provides the experience of a librarian that has obtained the strategic alliance between 23 public organizations, private and academic making the creation of the SISAV- Agriculture Sector Information System of the Valley of the Cauca, and constructing a new model of sustainable development that it looks for to solve situation of social exclusion and poverty. The access to the new technologies in the matter of rural development is one of the activities that has the support of the C...

  16. Evaluación de seis abonos verdes en un vertisol ústico en condiciones del Valle del Cauca

    Directory of Open Access Journals (Sweden)

    Bonilla C. C. R.

    2004-12-01

    Full Text Available En el Centro Experimental de la Universidad Nacional de Colombia-Sede Palmira, en un diseño de bloques completos al azar, se evaluaron seis tratamientos con tres repeticiones. (Cajanus cajan guandul arbóreo y arbustivo; Canavalia ensiformis, fríjol Canavalia; Cynodon niemfuensis, pasto estrella; Zea mays, Maíz y Cucúrbita moschata, zapallo. El pasto estrella y el zapallo fueron cultivos previos al ensayo; los otros materiales se sembraron por semilla a 50 cm en cuadro y se incorporaron al suelo a los 150 días cuando se cosechó el maíz (choclo. Maíz y canavalia aportaron mayor biomasa al suelo (10.068 y 9.748 kg/ha, respectivamente. C. cajan arbóreo y C. ensiformis aportaron las mayores cantidades de nitrógeno (254 y 213 kg/ha. El maíz y el pasto estrella, por sus altos contenidos de lignina, se descompusieron más lentamente. En casi todos los tratamientos se presentó incremento de la población microbiana, predominando la población de bacterias, seguida por hongos, fijadores de nitrógeno de vida libre y luego la población de actinomicetos. ABSTRACT Evaluation of six green manure materials in a Ustic Vertisol Soil of Cauca Valley, Colombia. This research was realized in the Experimental Center of the National University in Palmira. A design of a Randomized Completed Blocks, with six treatments and three repeticions was used. The treatments were two accesions of guandul (tree and shrub Cajanus cajan, Canavalia Canavalia ensiformis Corn Zea mays, Star grass Cynodon niemfuensis and Ramkin Cucúrbita moschata. The plot size was 20 m x 10 m. The materials were incorporated with tractor and disk plough when the maiz was colected as ear. The results showed that corn and Canavalia had the higher yields of fitomass (10068 and 9748 kg/ha, respectively. The legumes C. cajan (tree and C. ensiformis showed higher yileds of Nitrogen (254 and 213 kg/ha and biomolecules. Z. mays and C. nlemfuensis were the treatments with lower

  17. Notas sobre aves de colombia

    OpenAIRE

    Borrero H., José Ignacio; Olivares, Antonio; Hernández Camacho, Jorge

    2012-01-01

    We present some notes concerning principally with the distribution and systematic position of some species or subspecies of birds from the valley of the Magdalena river in the Departments of Santander, Cundinamarca and Tolima in Colombia.  The field-work in Santander was carried under the auspices of the Instituto Carlos Finlay of Bogotá, Colombia.

  18. Effects of Fragment and Vegetation Structure on the Population Abundance of Ateles hybridus, Alouatta seniculus and Cebus albifrons in Magdalena Valley, Colombia.

    Science.gov (United States)

    Marsh, Christopher; Link, Andres; King-Bailey, Gillian; Donati, Giuseppe

    2016-01-01

    Many primate species currently subsist in fragmented and anthropogenically disturbed habitats. Different threats arise depending on the species' life history strategy, dietary requirements and habitat preference. Additionally, anthropogenic disturbance is far from uniform and may affect individual forest fragments in a single landscape in differing ways. We studied the effects of fragmentation on three species of diurnal primate, Cebus albifrons, Alouatta seniculus and Ateles hybridus, in Magdalena Valley, Colombia. We tested the assumption that generalist species are more resilient than specialist species to habitat degradation by examining the fragments' vegetation and spatial structure and how these affected primate presence and abundance patterns. We found C. albifrons, a generalist, to be the most abundant species in 9 of 10 forest fragments, regardless of the level of habitat disturbance. A. hybridus, a large-bodied primate with a specialist diet, was either absent or low in abundance in fragments that had experienced recent disturbances and was found only in higher-quality fragments, regardless of the fragment size. A. seniculus, a species considered to have a highly flexible diet and the ability to survive in degraded habitat, was found in intermediate abundances between those of Cebus spp. and Ateles spp., and was more frequently found in high-quality fragments. PMID:27093602

  19. Variations in alluvial style of Tertiary units in response to tectonism, Las Monas area, middle Magdalena valley, Colombia

    Energy Technology Data Exchange (ETDEWEB)

    Jordan, D.W.; Siemers, C.T.

    1989-03-01

    Detailed sedimentologic and petrographic analyses of Tertiary alluvial sandstone outcrops within and east of producing oil fields in the Las Monas area in Colombia, South America, indicate that depositional style changed from fluvial-deltaic to braided streams atop alluvial fans to high-sinuosity meandering streams in response to uplifts in the surrounding areas. Diverse paleocurrent trends in the Tertiary formations in the perimeter area demonstrate that streams flowed northeast and northwest. Streams in the oil field had easterly and southerly components. Source areas contributing sediment were different and reflected uplifts to the west and south of the Las Monas area. Petrographic composition of sandstones that have easterly and southerly paleocurrent trends in the field area contain more feldspar and less polycrystalline strained quartz than sandstones having a northerly trend in the perimeter area. Sandstones in the field area represent an unroofing of a western granitic terrain, possibly in the ancestral Central Cordillera.

  20. Caracterización molecular con marcadores RAM de árboles nativos de Psidium guajava (guayaba en el Valle del Cauca

    Directory of Open Access Journals (Sweden)

    Sanabria Hilsy L

    2006-03-01

    Full Text Available COMPENDIO Se evaluaron 53 accesiones de Psidium guajava Valle del Cauca, utilizando marcadores microsatélites aleatorios RAM. Los seis primeros usados generaron 74 bandas polimórficas, con pesos moleculares de 100 a 700 pb. El porcentaje de loci Polimórfico en cinco de los primeros resultó ser del 100% (P < 0.05 y la diversidad génica de 0.4386. El Análisis de Varianza Molecular (AMOVA reveló que el 64.51% de la varianza total haplotípica contabiliza para variaciones dentro de transectos. El análisis de clasificación reflejó un agrupamiento que no correspondía a un patrón geográfico, lo cual indica que la especie de guayaba tiene alta diseminación. El análisis conjunto de las características morfológicas y moleculares suministró una caracterización confiable. La variación total de los descriptores morfológicos y valores moleculares fue explicada en un 77.58% mediante CP, donde las variables originales alcanzaron valores de comunalidad desde 57.22 a un 95.99% dentro de cinco variables sintéticas generadas. El ACM permitió caracterizar las accesiones en cuatro grupos, en los cuales según el análisis discriminante casi el 100% de las accesiones quedaron debidamente clasificadas. Palabras claves: Psidium guajava, accesiones, biodiversidad, marcadores genéticos, análisis molecular, clasificación. ABSTRACT Molecular characteristics of Psidium guajava in the Cauca Valley, Colombia. 53 accessions of Psidium guajava were collected in 9 zones of the Valley of the Cauca. The accessions were characterized molecularly by Microsatellite Amplificated Random RAMs, with the purpose to estimate the diversity and genetic structure that this specie possesses. Six primers were utilized and generated 74 polymorphisms bands with molecular weights from 100 to 700 pb. Five primers resulted to be 100% (P<0.05 polymorphic and the estimated gene diversity was 0.4386. The Analysis of Molecular Variance (AMOVA showed that the 64

  1. Hormigas como plagas potenciales en tres criaderos de mariposas del suroccidente de Colombia Ants as potential pest of butterflies in three rearing in the southwest of Colombia

    Directory of Open Access Journals (Sweden)

    María Catalina Sanabria-Blandón

    2009-01-01

    Full Text Available La fauna de hormigas asociada con la zoocría de mariposas en los departamentos de Valle del Cauca y Quindío (Colombia, se colectó por captura manual en tres ambientes (mariposario, vivero y laboratorio. De 125 muestras se extrajeron 779 hormigas, pertenecientes a cinco subfamilias, 18 géneros y 24 especies. El mayor número de especies se registró en el área de laboratorio (17, seguido por vivero (16 y mariposario (13. No se encontraron diferencias significativas (Chi² = 6.019, g.l.= 10, P>0.75, al evaluar la preferencia de las hormigas por un ambiente, sin embargo se observaron tendencias de esta manera: Wasmannia auropunctata (50%, Linepithema sp. (47%, Monomorium floricola (40% fueron las más importantes en el laboratorio, mientras que en el mariposario fueron Linepithema humile (42%, Camponotus novogranadensis (39% y Paratrechina longiconis (37.5% y en el vivero W. auropunctata (37.5% y P. longicornis (37.5%. Algunas de estas hormigas son reconocidas como vagabundas y plagas urbanas, lo que podría considerarse como un riesgo potencial para las actividades de zoocría de mariposas. En el presente estudio se propuso conocer las especies de hormigas que se asocian con tres criaderos de mariposas localizados en el suroccidente colombiano.The ant fauna associated to the butterflies rearing in the departments of Cauca Valley and Quindio (Colombia was studied. The ants were collected using manual capture method in three different environments (butterfly garden, nursery and laboratory. 779 ants were extracted from 125 samples, which belonged to five sub-families, 18 genera and 24 species. The greatest number of species were registered at the laboratory (17, followed by nursery (16 and butterfly garden (13. There weren't any significant differences (Chi2 = 6.019, d.f.= 10, P> 0.75, in assessing the preference of ants for some environment, however some trends were observed, on this way: at the lab Wasmannia auropunctata (50%, Linepithema sp

  2. Cambios en coberturas de áreas y usos del suelo en tres humedales en el Valle del Cauca

    OpenAIRE

    Christian Andrés Núñez Restrepo; Edgar Enrique Madero Morales

    2009-01-01

    El objetivo de este proyecto fue aplicar la tecnología de Sistemas de Información Geográfica (SIG), en especial los programas ARCGIS y ERDAS, como metodología para identificar los cambios de cobertura de área y uso del suelo en las zonas de los humedales la Bolsa, Charco de Oro y el Pital, localizados en la parte plana del municipio de Andalucía corregimiento de Campoalegre y El Salto (Valle del Cauca, Colombia). Para el estudio se utilizaron fotografías aéreas de 1950 y 1998, imágenes Landsa...

  3. Una virosis del cacao en colombia y en la república dominicana

    OpenAIRE

    Ciferri Rafael

    2012-01-01

    Se describe la sintomatología de una nueva enfermedad del cacao, llamada "hoja estrecha abollada", cuya naturaleza virosa ha sido establecida mediante la transmisión por injerto y cuya distribución geográfica, hasta la fecha, abarca la República Dominicana y el Valle del Cauca, en Colombia.

  4. Japoneses en Colombia. Historia de inmigración, sus descendientes en Japón

    OpenAIRE

    Ines Sanmiguel.

    2006-01-01

    Based on the use of primary sources, the article studies Japanese immigration towards Colombia during the XX Century. It takes into consideration the immigration projects at Cauca and the Atlantic Coast, as well as the crisis triggered by the beginning of the Second World War. The analysis extends until nowadays, and includes a thought on the remittances issue.

  5. DAMAGE BY TIBRACA LIMBATIVENTRIS (HEMIPTERA: PENTATOMIDAE) TO RICE IN SOUTHWESTERN COLOMBIA

    Science.gov (United States)

    Action thresholds for Tibraca limbativentris Stall (TL) on rice were calculated to be 8.8 and 25.8 TL/10 sweep nets for 30 and 40 day old plants respectively. Population dynamics of TL in two localities of Valle del Cauca Colombia, indicates a density of 1.2 TL/ sweep (12 TL/10 sweeps). Densities e...

  6. Bienestar y participación, una construcción local. Versalles, Valle del Cauca

    Directory of Open Access Journals (Sweden)

    Mark Lundy

    1999-01-01

    Full Text Available El concepto de desarrollo local se ha venido construyendo tanto en el escenario académico como en los diferentes espacios de trabajo comunitario existentes en Colombia. El presente artículo retoma una de estas experiencias, la del Comité de Participación Comunitaria del municipio de Versalles, Valle del Cauca, y la desglosa por medio de una descripción, el análisis de los logros y algunas reflexiones acerca de lo vivido. El ejercicio permite avanzar en la definición de algunos conceptos, clarificar retos futuros, proponer algunos pasos necesarios para potenciar el desarrollo humano e identificar ciertas variables claves en el proceso de desarrollo local.

  7. Implementation of decision support system in the central AQUATOOL Department of Valle del Cauca

    International Nuclear Information System (INIS)

    The decision support system AQUATOOL, created by the Polytechnic University of Valencia (Spain), represents an alternative for water resources management for it makes it possible to evaluate planning scenarios for the use of both surface and groundwater. For the evaluation of this tool, the application zone chosen was the Central Region of the Valle del Cauca State in Colombia. With the mathematical model AQUATOOL technical scenarios were formulated focused on the efficient satisfaction of demands in the zone, based on a supply - demand scheme, in which only real demand was included in the regulations for the use of every stream. As far as surface waters are concerned, a special feature of the State concerns its torrential flow rivers, not regulated. Though there are feasibility studies for regulation dams in the zone. Based on this initial scheme several alternatives were presented: aquifer swell and study of dams projected as complementary supply resources, aiming to greater satisfaction of present and future demands.

  8. Analysis of curved folds and fault/fold terminations in the southern Upper Magdalena Valley of Colombia

    Science.gov (United States)

    Jiménez, Giovanny; Rico, John; Bayona, German; Montes, Camilo; Rosero, Alexis; Sierra, Daniel

    2012-11-01

    We use surface and subsurface fold and fault geometries to document curved geometry of folds, along-strike termination of faults/folds and the change of dip of regional faults in four structural areas in the southern part of the Upper Magdalena Valley Basin. In La Cañada area, strike-slip deformation is dominant and cuts former compressional structures; faults and folds of this area end northward abruptly near Rio Paez. To the north of Paez River is the La Hocha area that includes the Tesalia Syncline and La Hocha Anticline, two curved folds that plunge at the same latitude. The southern domain of La Hocha Anticline is asymmetric and bounded by faults in both flanks, whereas the symmetry of the northern domain is related to subsurface fault bending. Paleomagnetic components uncovered in Jurassic rocks suggest a clockwise rotation of 15.2 ± 11.4 in the southern domain, and 31.7 ± 14.4 in the northern domain. The Iquira Area, North of La Hocha, the internal structure is controlled by east-verging faults that end abruptly to the north of this area. The northernmost area is the Upar area that includes fault systems with opposite vergence; west-verging faults at the east of this area decapitate east-verging faults and folds. Paleomagnetic data, geologic mapping and regional structural cross-sections suggest that: (1) pre-existing basement structure controls the curved geometry of La Hocha Anticline; (2) along-strike changes in structural style between adjacent areas and along-strike termination of faults and folds are related to the location of northwest-striking transverse structures in the subsurface; and (3) at least two deformation phases are documented: an Eocene-Oligocene phase associated with the growth of folds along detachment levels within Mesozoic rocks; and a late Miocene phase associated with transpressive faulting along the Chusma and San Jacinto faults. The latter event drove clockwise rotation of the La Hocha Anticline.

  9. Obtención del tiempo de retardo y del tiempo de concentración para varias cuencas del departamento del Valle del Cauca Getting the lag time and the concentration time for various basin of the Valle del Cauca department

    Directory of Open Access Journals (Sweden)

    Materón M. Hernán

    1989-12-01

    Full Text Available En este trabajo se encontraron expresiones matemáticas, a partir de cuatro características fisiográficas, que permitieron reproducir la respuesta hidrológica de las cuencas del centro y norte del Departamento del Valle del Cauca en términos de los tiempos de retardo y de concentración. Se consideraron diez áreas de drenaje cuyas corrientes son afluentes del río Cauca. Las áreas oscilan entre 11.63 a 317.5 km2. Los resultados obtenidos a partir de métodos calibrados en cuencas extranjeras y con un estudio similar realizado en Antioquia, indicaron diferencias significativas entre estos resultados. Las diferencias fueron más altas en las cuencas de mayor extensión.In this work were found mathematical expressions, upon four phisiografic characteristics that allow the hidrological response of the central and north basins of the Valle del Cauca in terms of the lag and concentration time. Ten areas of drainage which currents are afluents of the Cauca river were considered. The areas go from 11.63 to 317.5 km", The results obtained from the calibrated methods in basis of other countries and with a similar method made in Antioquia, Colombia, indicated significant differences between these results. The differences are higger in basins of more extension.

  10. CATÁLOGO DE LA FAMILIA POACEAE EN COLOMBIA

    OpenAIRE

    Diego Giraldo-Cañas

    2011-01-01

    Se presenta un inventario de las especies de Poaceae de Colombia junto con un análisis de la diversidad específica de esta familia según las regiones naturales colombianas, los gradientes de altitud y de precipitaciones, y la distribución sistemática. Se realizaron 96 expediciones de campo a las diez grandes regiones naturales de Colombia (Amazonia, Andes, Caribe, Chocó Biogeográfico, Guayana, islas caribeñas, Orinoquia, Sierra Nevada de Santa Marta, valle del río Cauca y valle del río Magdal...

  11. 100 años de la jurisdicción contencioso administrativa en el departamento del Cauca. Un estudio de su historia y de las decisiones de nulidad y reparación directa

    Directory of Open Access Journals (Sweden)

    Hoover Hugo Paredes Mosquera

    2014-09-01

    Full Text Available This paper poses a historical overview of the Administrative Litigation Tribunal of Cauca Department in Colombia; its contributions to Human Rights protection and administrative control are analyzed. Document analysis methodology is used and it is concluded that this jurisdiction reclaimed victim’s rights and firmly examined the principle of legality of administrative activities as established in the legislation in force at the time

  12. Orchids of the cloud forests of southwestern Colombia and opportunities for their conservation

    Directory of Open Access Journals (Sweden)

    Jorge E. Orejuela-Gartner

    2012-09-01

    Full Text Available Between Colombia and Ecuador, the two richest countries in the world in orchids, 9,000 species are found or thirty percent of all knownspecies. However, in both countries the number of orchid species threatened with extinction may well add up 3,000 species, a figure quiteworrying when you consider that the main cause of this extinction is the deforestation of Andean forests. These forests provide most ofthe water resources for the large cities, agriculture lands and industries of these nations. One could say that where there are still forestsrich in orchid populations there will also be healthy human populations. The La Planada, Farallones de Cali and La Mesenia natural areas inthe Guiza, Cali-Jamundí and San Juan river basins respectively represent examples where the richness and endemism of their more than400 species registered thus far coincide with the importance of the ecosystem services provided to the cities of Ricaurte and Tumaco in thedepartment of Nariño, Cali-Jamundí in Cauca Valley and Jardín/Andes in Antioquia, where some critical areas of cloud forests have beenidentified for conservation. Images are presented of endemic, threatened and newly described orchid species of Colombia’s Western

  13. Gestión ambiental para conservar la potencialidad turística en función de la oferta hídrica de los suelos de terrazas aluviales entre las quebradas la seca, la nuarque y el río cauca: municipio de olaya, departamento de antioquia

    OpenAIRE

    Henao R. Leonardo de Jesús; Obregón R. Gerardo

    2008-01-01

    Se prevén cambios en los usos suelos en el corredor turístico de la margen derecha del Río Cauca, municipio de Olaya, departamento de Antioquia, república de Colombia: sector la Florida y vereda Quebrada Seca, esto por el crecimiento de la población turística o flotante generada por la apertura del Túnel de Occidente. El área de estudio está comprendida entre las quebradas La Seca, La Nuarque y el Río Cauca y tiene 1367 hectáreas. El trabajo contempla la ejecución de un balance híd...

  14. SimBasin: serious gaming for integrated decision-making in the Magdalena-Cauca basin

    Science.gov (United States)

    Craven, Joanne; Angarita, Hector; Corzo, Gerald

    2016-04-01

    The Magdalena-Cauca macrobasin covers 24% of the land area of Colombia, and provides more than half of the country's economic potential. The basin is also home a large proportion of Colombia's biodiversity. These conflicting demands have led to problems in the basin, including a dramatic fall in fish populations, additional flooding (such as the severe nationwide floods caused by the La Niña phenomenon in 2011), and habitat loss. It is generally believed that the solution to these conflicts is to manage the basin in a more integrated way, and bridge the gaps between decision-makers in different sectors and scientists. To this end, inter-ministerial agreements are being formulated and a decision support system is being developed by The Nature Conservancy Colombia. To engage stakeholders in this process SimBasin, a "serious game", has been developed. It is intended to act as a catalyst for bringing stakeholders together, an illustration of the uncertainties, relationships and feedbacks in the basin, and an accessible introduction to modelling and decision support for non-experts. During the game, groups of participants are led through a 30 year future development of the basin, during which they take decisions about the development of the basin and see the impacts on four different sectors: agriculture, hydropower, flood risk, and environment. These impacts are displayed through seven indicators, which players should try to maintain above critical thresholds. To communicate the effects of uncertainty and climate variability, players see the actual value of the indicator and also a band of possible values, so they can see if their decisions have actually reduced risk or if they just "got lucky". The game works as a layer on top of a WEAP water resources model of the basin, adapted from a basin-wide model already created, so the fictional game basin is conceptually similar to the Magdalena-Cauca basin. The game is freely available online, and new applications are being

  15. Descripción de una nueva subespecie de Leptotila Verreauxi Bonaparte,1855 (Aves: Columbidae) del sureste de Colombia

    OpenAIRE

    Romero Zambrano Hernando; Morales Sánchez Jorge E.

    1981-01-01

    La especie Leptotila verreauxi se conocía en Colombia en la región suroccidental, mitad meridional de la cuenca del río Cauca y la ladera occidental de los Andes occidentales en el Departamento del Cauca, hacia el sur y en la ladera amazónica de los Andes en el sureste de Nariño (cf. Meyer De Schauensee,1952: 4) con la subespecie L. v. decolor (SALVIN, 1892). Al norte del país y en el valle del río Magdalena está representada por L. v, verreauxi (BONAPARTE,1855) de la cual para el oriente del...

  16. Physical properties of magnesium affected soils in Colombia

    International Nuclear Information System (INIS)

    Magnesium has some capacity to develop higher exchangeable sodium levels in clays and soil materials. The Mg+2 accumulation on the exchange complex of soils to a very high saturation levels affect their physical, chemical and biological properties. Colombia has a large area of these soils, located mainly in the main rivers valleys and in the Caribbean Region. In the Cauca River Valley there are about 117,000 hectares affected. There is a lack of information about the soil forming processes, the Mg+2 effects on soils, the type and source of compounds responsible for the magnesium enrichment, their relationship with the landscape and the way this accumulation occurs. To identify and quantify soil Mg+2 enriched areas over 2500 soil profiles from different landscape positions of the Cauca River Valley were studied. The information was processed to generate Mg-saturation maps, to identify the different soil profile types and to estimate the affected area. A topographic sequence from the alluvial inundation plain to the hills was used to explore the presence of diagnostic horizons and to determine the main soil characteristics and genetic, mineralogical or chemical evidences of soil forming processes. Two 180 kilometer transects parallel to the river were used to: a) study the type and source of Mg-compounds responsible for the Mg-enrichment and the way this accumulation occurs. b) the soil hydraulic properties like infiltration, saturated hydraulic conductivity and matrix potential at different depths were also measured. Samples of nine profiles were collected and the porosity and soil volume changes at different water content were examined. The program RETC was used for prediction of the hydraulic properties of non saturated soils. These properties involved the retention curve, the function of hydraulic conductivity and the diffusivity of the water in the soil. By grouping together the soil profiles, five main type of Mg-affected soils were identified as being

  17. Adiciones a la Biota de Uredinales (fungi de Colombia Addictions to the Uredinales Biota (fungi in Colombia

    Directory of Open Access Journals (Sweden)

    Katherin Maritza Vanegas Berrouet

    2011-12-01

    Full Text Available Colecciones de plantas con síntomas de hongos royas (Uredinales, Basidiomycota realizadas en los últimos años en los departamentos de Amazonas, Antioquia, Caldas, Cundinamarca, Tolima y Valle del Cauca han sido estudiadas y depositadas en el Museo Micológico de la Universidad Nacional de Colombia, Sede Medellín (MMUNM. Entre las novedades encontradas, se registran por primera vez para Colombia las royas: Puccinia investita, Sphenospora pallida, Crossopsora piperis, Uredo psychotriicola y Pucciniosira solani. Se adiciona la familia botánica Dioscoreaceae para la Biota de Uredinales colombianos. Se hace la corrección del nombre anamórfico Uredo parthenii publicado para Colombia en 2003, por el nombre teliomorfico válido Puccinia schileana. Son registrados seis nuevos hospedantes parasitados por royas en Colombia, entre estos reviste importancia la colección sobre Origanum vulgare L. una planta aromática y medicinal cultivada mundialmente.Plant collections with symptoms of rusts fungi (Uredinales, Basidiomycota made during recent years in provinces of Amazonas, Antioquia, Caldas, Cundinamarca, Tolima and Valle del Cauca have been studied and deposited in Museo Micológico of Universidad Nacional de Colombia, Sede Medellín (MMUNM. The rusts species Puccinia investita, Sphenospora pallida, Crossopsora piperis, Uredo psychotriicola and Pucciniosira solani are new records for Colombia. A first record for this country of rust fungi in plants of family Dioscoreaceae has been also made. The anamorphic name Uredo parthenii published in 2003 in Colombia, has been corrected by the valid teleomorph Puccinia schileana. Finally, six new hosts parasitized by rusts are recorded, including Origanum vulgare L. a world-wide important aromatic and medicinal plant.

  18. Agroindustria y extractivismo en el Alto Cauca. Impactos sobre los sistemas de subsistencia Afrocampesinos y resistencias (1950-2011

    Directory of Open Access Journals (Sweden)

    Irene Vélez Torres

    2013-12-01

    Full Text Available La agroindustria y el extractivismo han generado un profundo cambio en las prácticaseconómicas tradicionales del Alto Cauca en Colombia en detrimento de los sistemas socio-económicos de subsistencia de la población local Afro-campesina. El intenso conflictoarmado y la migración forzada han acompañado la instauración de estos modelos de acumulaciónpor despojo. Utilizando una metodología de investigación participativa, este artículoanaliza críticamente la disputa por el acceso y la propiedad sobre la tierra y los bienesambientales del territorio, rescatando el punto de vista de comunidades Afrodescendientesy organizaciones sociales que han resistido desde la colonia y hasta nuestros días para defendersus pueblos y territorios.

  19. A landslide susceptibility assessment in urban areas based on existing data: an example from the Iguaná Valley, Medellín City, Colombia

    OpenAIRE

    Klimeš, J.; V. Rios Escobar

    2010-01-01

    Fast urbanization and the morphological conditions of the Iguaná River Basin, Medellín, Colombia have forced many people to settle on landslide prone slopes as evidenced by extensive landslide induced damage. In this study we used existing disaster databases (inventories) in order to examine the spatial and temporal variability of landsliding within this watershed. The spatial variability of landsliding was examined using "expert-based" and "weighted" landslide susceptibility models. The cons...

  20. A landslide susceptibility assessment in urban areas based on existing data: an example from the Iguaná Valley, Medellín City, Colombia

    Czech Academy of Sciences Publication Activity Database

    Klimeš, Jan; Rios Escobar, V.

    2010-01-01

    Roč. 10, č. 10 (2010), s. 2067-2079. ISSN 1561-8633 R&D Projects: GA ČR GP205/09/P383 Institutional research plan: CEZ:AV0Z30460519 Keywords : landslide susceptibility assessment * Colombia * Medellín Subject RIV: DE - Earth Magnetism, Geodesy, Geography Impact factor: 1.792, year: 2010 http://www.nat-hazards-earth-syst-sci.net/10/2067/2010/nhess-10-2067-2010.html

  1. La inserción al Asia-Pacífico, oportunidades y desafíos para el Valle del Cauca y la región pacífica colombiana

    Directory of Open Access Journals (Sweden)

    Ricardo Coutin

    2014-12-01

    Full Text Available Resumen: El objetivo general del texto es brindar una aproximación a los retos y las oportunidades que representa, para el Valle del Cauca y la Región Pacífica colombiana, la inserción al Asia-Pacífico. Para lo cual se plantean tres objetivos específicos: primero, analizar someramente el contexto económico comercial del Asia-Pacífico y América Latina, con especial énfasis en Colombia y los demás países de la Alianza del Pacífico (AP; segundo, estudiar las oportunidades y los retos para el Valle del Cauca y la Región Pacífica colombiana que plantea la puesta en escena del bloque comercial denominado Alianza del Pacífico; y tercero, indagar sobre los retos de competitividad y productividad que enfrenta el Valle del Cauca y que afectan el ambiente de negocios. El documento concluye que Colombia se encuentra rezagada en su inserción con la cuenca del Asia-Pacífico; también se plantea la necesidad de abordar el tema de estudio desde un enfoque subnacional.

  2. Política pública de la migración en el Departamento del Valle del Cauca. ¿Cómo se está tratando el tema de la migración internacional, en el Departamento del Valle del Cauca hasta el 2009?

    Directory of Open Access Journals (Sweden)

    Lorena López López

    2011-08-01

    Full Text Available El presente documento de trabajo se basa en la tesis de grado, presentada en la Universidad Icesi de Cali, bajo el mismo título del presente artículo. El texto aborda la Política Integral Migratoria (PIM de Colombia y sus implicaciones en el departamento del Valle del Cauca. El documento está dividido en cuatro temas principales. Primero, se presenta el marco teórico, enfocado, particularmente, en el concepto de migración internacional, el cual se analiza desde distintos puntos de vista y autores. Segundo, se retoman los últimos 30 años de proceso histórico migratorio desde el departamento del Valle del Cauca al exterior. Tercero, se analiza el documento Conpes 3603, emitido por el Gobierno Nacional, en cabeza del Ministerio de Relaciones Exteriores, y se escruta sobre la influencia de este en las políticas formuladas e implementadas en el departamento. Cuarto, se enumeran algunas de las organizaciones gubernamentales, y no gubernamentales, más relevantes con las cuales trabaja el gobierno del Valle del Cauca para lograr el desarrollo de la Política Integral Migratoria (PIM en el departamento. Finalmente, el presente artículo pretende brindar algunas conclusiones, a modo de reflexión, sobre los retos que enfrenta la Política Integral Migratoria (PIM en el departamento.

  3. Environmental management to preserve the tourist potential on the basis of hydric supply of alluvial soil terracing, between Quebrada Seca, La Nuarque and the Cauca River, Municipality of Olaya, Department of Antioquia

    International Nuclear Information System (INIS)

    It is predict changes on the soils uses at the tourist zone of the right margin of Cauca river, Olaya village, department of Antioquia, republic of Colombia: La Florida and Quebrada Seca sectors, this is the consequence of the growth of tourist population generated by the opening of the Tunel de Occidente. The study area is between the streams: La Seca, La Nuarque and the Cauca river, it has 1367 hectares. The work contemplates to carry out of a hidric balance, the projection of population and its hidric requires to the year 2016, on the basis of the previous ideas it was defined: the offer-demand relation at the year 2016 and the instructive to the environmental management for the conservation, optimization and use of the hidric resources and the environmental arrangement of the territory, reasonable to the density of houses in agreement with the soil's potentials

  4. Malaria in gold-mining areas in Colombia.

    Science.gov (United States)

    Castellanos, Angélica; Chaparro-Narváez, Pablo; Morales-Plaza, Cristhian David; Alzate, Alberto; Padilla, Julio; Arévalo, Myriam; Herrera, Sócrates

    2016-01-01

    Gold-mining may play an important role in the maintenance of malaria worldwide. Gold-mining, mostly illegal, has significantly expanded in Colombia during the last decade in areas with limited health care and disease prevention. We report a descriptive study that was carried out to determine the malaria prevalence in gold-mining areas of Colombia, using data from the public health surveillance system (National Health Institute) during the period 2010-2013. Gold-mining was more prevalent in the departments of Antioquia, Córdoba, Bolívar, Chocó, Nariño, Cauca, and Valle, which contributed 89.3% (270,753 cases) of the national malaria incidence from 2010-2013 and 31.6% of malaria cases were from mining areas. Mining regions, such as El Bagre, Zaragoza, and Segovia, in Antioquia, Puerto Libertador and Montelíbano, in Córdoba, and Buenaventura, in Valle del Cauca, were the most endemic areas. The annual parasite index (API) correlated with gold production (R2 0.82, p gold produced, the API increased by 0.54 cases per 1,000 inhabitants. Lack of malaria control activities, together with high migration and proliferation of mosquito breeding sites, contribute to malaria in gold-mining regions. Specific control activities must be introduced to control this significant source of malaria in Colombia. PMID:26814645

  5. Malaria in gold-mining areas in Colombia

    Directory of Open Access Journals (Sweden)

    Angélica Castellanos

    2016-01-01

    Full Text Available Gold-mining may play an important role in the maintenance of malaria worldwide. Gold-mining, mostly illegal, has significantly expanded in Colombia during the last decade in areas with limited health care and disease prevention. We report a descriptive study that was carried out to determine the malaria prevalence in gold-mining areas of Colombia, using data from the public health surveillance system (National Health Institute during the period 2010-2013. Gold-mining was more prevalent in the departments of Antioquia, Córdoba, Bolívar, Chocó, Nariño, Cauca, and Valle, which contributed 89.3% (270,753 cases of the national malaria incidence from 2010-2013 and 31.6% of malaria cases were from mining areas. Mining regions, such as El Bagre, Zaragoza, and Segovia, in Antioquia, Puerto Libertador and Montelíbano, in Córdoba, and Buenaventura, in Valle del Cauca, were the most endemic areas. The annual parasite index (API correlated with gold production (R2 0.82, p < 0.0001; for every 100 kg of gold produced, the API increased by 0.54 cases per 1,000 inhabitants. Lack of malaria control activities, together with high migration and proliferation of mosquito breeding sites, contribute to malaria in gold-mining regions. Specific control activities must be introduced to control this significant source of malaria in Colombia.

  6. Descripción de los parámetros productivos, reproductivos y de las tecnologías de producción en sistemas intensivos de ganadería bovina en el sur del Valle geográfico del río Cauca

    Directory of Open Access Journals (Sweden)

    Sánchez Clara Inés

    1995-06-01

    Full Text Available

    En la zona plana del Sur del Valle del Cauca, Colombia, se estudiaron nueve (9 fincas, clasificadas como sistemas intensivos de producción bovina. Los resultados (medias e intervalos de confianza fueron: a Parámetros de producción: UGGI/ha: 2.7 (2.5-2.8; animales/ha; 3.2 (3.0-3.4; Duración de lactancia; días: 320 (292-349; Producción de leche /vaca/día, 1: 8.1 (6.4-9.8; Vacas en producción, %: 74.3 (64.2-84.4; Leche/vaca/año, 1:2850 (2231-3370; Leche vaca/día/hato, 1:5.75 (4.2-7.3; b Parámetros de reproducción: Natalidad, %: 80.5 (71.6-89.5; intervalo entre partos, meses: 14.7 (13.5-15.9; intervalo parto-concepción, días: 166 (129-202; servicios por concepción (IA: 1.7 (1.3-2.1; edad al primer servicio, meses: 23 (20.6-25.3. Los resultados fueron superiores a los descritos para sistemas intensivos en Colombia. Se comprobó el grado de intensificación por la utilización de tecnología como razas mejoradas, fertilizantes químicos, agrotóxicos, riego, pastoreo intensivo rotacional, alimentos concentrados, conservación de forrajes, planes sanitarios de vacunación y control de parásitos, crianza e inseminación artificial, ordeño mecanizado. No se encontró común el uso de tecnologías como el aprovechamiento de residuos de cosecha, subproductos agroindustriales, leguminosas asociadas con gramíneas y leguminosas arbóreas en la alimentación del ganado.

    The study was carried out in the plain zone of the south of Cauca Valley, Colombia. The main productive and reproductive parameters and the more representative technological characteristics were estimated and analized comparatively for nine (9 farms, classified as intensive cattle production systems. The results were (means and confidence intervals: a Production parameters: Cattle units/ha: 2.7 (2.5-2.8; animal/ha: 3.2 (3.0-3.4; lactation length, days: 320 (292-349; daily milk production per cow, 1:8.1 (6.4-9.8; productive cows, % 74.3: 64.2-84.4 Yearly milk

  7. Silenced Fighters: Identity, Language and Thought of the Nasa People in Bilingual Contexts of Colombia (Voces silenciadas: identidad, lengua y pensamiento de la comunidad nasa en contextos bilingües colombianos)

    Science.gov (United States)

    Escobar Alméciga, Wilder Yesid; Gómez Lobatón, July Carolina

    2010-01-01

    This article is the result of a theoretical investigation and a reflection guided by a revision of literature and a set of interviews conducted of two members of the Nasa community: Adonias and Sindy Perdomo, father and daughter who belong to a Nasa sub-community located in Tierradentro, Cauca, southwestern Colombia. The article addresses three…

  8. Descripción de un caso de labio leporino y paladar hendido en bubalus bubalis bubalis (búfalo, Sucre, Colombia - Description of a case of harelip and cleft palate in bubalus bubalis bubalis (buffalo, Sucre, Colombia.

    Directory of Open Access Journals (Sweden)

    Montes Vergara, Donicer

    2012-07-01

    Full Text Available ResumenEl presente trabajo muestra el hall azgo de un caso de labio leporino y paladar hendido en una cría de Bubalus bubalis bubalis (Murrah x Murrah en una la finca, dedicada a la explotación de esta especie de ganado ubicada en la depresión del Bajo Cauca y San Jorge del Municipio de San Benito Abad, departamento de Sucre, Colombia.SummaryThe present work report the discovery of a case of harelip and cleft palate in a newborn of Bubalus bubalis bubalis (Murrah x Murrah on a farm dedicate to this calve exploitation, located in the depression of the Cauca River andSan Jorge River on the Municipality of San Benito Abad, department of Sucre, Colombia.

  9. Beneficiation of Guachinte (Cauca) and Golondrinas (Valle Del Cauca) coals using a Cyclone test rig with two separation stages

    International Nuclear Information System (INIS)

    Two Colombian coals from South-West, Guachinte (Cauca) and Golondrinas (Valle del Cauca)), were beneficiated using a dense medium cyclone with two separation stages in series. It was obtained a concentrated fraction in organic matter (beneficiated fraction) for each separation stage. Yield of beneficiated fractions obtained in the first separation stage were in the range 28 to 58%. Using the second separation stage, the maximum yield obtained for Guachinte coal was 71%. Ash content of beneficiated coal fractions was between 6.84 and 24.68%, which was lower than feed fractions 23.39 y 43.29%. A reduction in sulphur content was also found in beneficiated fractions of Guachinte coal in comparison to feed fractions, however, a contrary behavior was obtained for Golondrinas coal.

  10. Cartografía social como metodología participativa y colaborativa de investigación en el territorio afrodescendiente de la cuenca alta del río Cauca

    OpenAIRE

    Daniel Varela Corredor; Sandra Rátiva Gaona; Irene Vélez Torres

    2012-01-01

    Este articulo explora las oportunidades y los desafíos de la cartografía social como metodología participativa y colaborativa de investigación para caracterizar los conflictos socioambientales en tres territorios de la cuenca alta del rio Cauca, al suroccidente de Colombia. El texto esta organizado en cinco partes: (i) introducción al articulo, (ii) descripción del problema y del contexto de investigación, (iii) presentación del contexto etnográfico y decisiones metodológicas, (iv) reflexión ...

  11. Estudio de las características del drenaje de un suelo orgánico del páramo de las papas, Cauca Study of characteristics of drainage conditions in an organic soil at paramo de las papas

    OpenAIRE

    Tafur Hermann Harold; Gómez Zambrano Jairo

    1990-01-01

    En la hacienda Los Andes, ubicada en el municipio de San Sebastián, departamento del Cauca, Colombia (2.700 m.s.n.m.), se adelantó un estudio acerca de las características hidráulicas de sus suelos, determinados por un alto contenido de materia orgánica (suelos orgánicos). Se encontró que a pesar de la alta porosidad que puede presentar un suelo orgánico, su permeabilidad no necesariamente, responde directamente a esta característica, porque está dominada esencialmente por microporos. El mal ...

  12. Potassium effect on production and forage quality of brachiaria decumbens stapf in the eastern plain piedmont of colombia

    OpenAIRE

    Rincón Castillo, Álvaro

    2012-01-01

    This study was conducted to evaluate the response of planting coffee under different cropping systems: organic, conventional and organic-mineral, on soil phosphorus fractions with volcanic influence in the department of Valle del Cauca (Colombia) coffee growing zone. Sequential fractionation methodology adapted by the International Center of Tropical Agriculture was used. The statistical analysis consisted of a Complete Randomized Block Design under a split plot arrangement with three treatme...

  13. La cuestión Cerruti y la crisis diplomática entre Colombia e Italia (1885-1911)

    OpenAIRE

    Tamburini, Francesco

    2000-01-01

    In february 1885, during the civil war between the conservative and the upleaved liberal party in the Colombian federated state of Cauca, the real estates and properties of the Italian subject Ernesto Cerruti were destroyed and impounded, under the charge of cooperation with the insurgent liberal forces. The measures taken by the Caucan authorities and the subsequent demand for compensation by Cerruti were the cause of the 26 years longlasting diplomatic clash between Colombia and Italy, whic...

  14. A landslide susceptibility assessment in urban areas based on existing data: an example from the Iguaná Valley, Medellín City, Colombia

    Science.gov (United States)

    Klimeš, J.; Rios Escobar, V.

    2010-10-01

    Fast urbanization and the morphological conditions of the Iguaná River Basin, Medellín, Colombia have forced many people to settle on landslide prone slopes as evidenced by extensive landslide induced damage. In this study we used existing disaster databases (inventories) in order to examine the spatial and temporal variability of landsliding within this watershed. The spatial variability of landsliding was examined using "expert-based" and "weighted" landslide susceptibility models. The constructed landslide susceptibility maps demonstrate consistent results irrespective of the underlying method. These show that at least 55.9% of the watershed is highly or very highly susceptible to landsliding. In addition, the temporal distribution of landsliding was analyzed and compared with climatic data. Results show that the area has a distinct bimodal rainfall distribution, and it is clear that landsliding is particularly frequent during the later rainy season between October and November. Moreover, landslides are more common during La Niña years. It is recommended that the existing landslide inventories are improved so as to be of greater use in the future land use planning of the watershed. The construction of landslide susceptibility maps based on existing data represents a significant step towards landslide mitigation in the area. Using susceptibility and hazard assessment during the developmental process should lessen the need for disaster response at a later stage.

  15. FRECUENCIA DE HEMOPARÁSITOS EN BOVINOS DEL BAJO CAUCA Y ALTO SAN JORGE, 2000-2005

    Directory of Open Access Journals (Sweden)

    Mariana Herrera

    2008-12-01

    Full Text Available Objetivo. Determinar la frecuencia de hemoparásitos en los bovinos evaluados por microscopía directa. Materiales y métodos. Se aplicó un modelo epidemiológico cuyo diseño de investigación fue transeccional de tipo descriptivo retrospectivo transversal. Se analizó la totalidad de los datos de los últimos 5 años, proporcionados por el laboratorio Lavebac que presta su servicio a las regiones del Bajo Cauca Antioqueño y Córdoba. Se realizó un análisis de tendencias por el tipo de parásito, sistema de explotación, procedencia y época climática; seguido de un análisis comparativo de asociación utilizando la razón de disparidad (RD y el X2, mediante el programa EPI-INFO versión 3.3. Resultados. Se encontró una frecuencia hemoparasitaria del 22.5%, y de estos el 59.3% correspondió a Anaplasma sp, el 3.1% a Babesia sp y para Trypanosoma sp 30.9%. La región con mayor frecuencia hemoparasitaria fue Bajo Cauca (14%; los diagnósticos positivos fueron realizados con mayor frecuencia en época seca (14.9%, en la que se detectó mayor proporción de infección por Anaplasma sp. Conclusiones. Los resultados dan una aproximación a la frecuencia y distribución de Trypanosoma sp, Babesia sp y Anaplasma sp en dos zonas ganaderas de Colombia, en donde durante la época seca se encontró un mayor porcentaje de infección, y de los agentes hemoparasitarios Anaplasma sp es el más frecuente.

  16. Integrated provenance analysis of a convergent retroarc foreland system: U-Pb ages, heavy minerals, Nd isotopes, and sandstone compositions of the Middle Magdalena Valley basin, northern Andes, Colombia

    Science.gov (United States)

    Nie, Junsheng; Horton, Brian K.; Saylor, Joel E.; Mora, Andrés; Mange, Maria; Garzione, Carmala N.; Basu, Asish; Moreno, Christopher J.; Caballero, Victor; Parra, Mauricio

    2012-01-01

    Sediment provenance analysis remains a powerful method for testing hypotheses on the temporal and spatial evolution of uplifted source regions, but issues such as recycling, nonunique sources, and pre- and post-depositional modifications may complicate interpretation of results from individual provenance techniques. Convergent retroarc systems commonly contain sediment sources that are sufficiently diverse (continental magmatic arc, fold-thrust belt, and stable craton) to enable explicit provenance assessments. In this paper, we combine detrital zircon U-Pb geochronology, heavy mineral identification, Nd isotopic analyses, conventional sandstone petrography, and paleocurrent measurements to reconstruct the clastic provenance history of a long-lived sedimentary basin now exposed in an intermontane zone of the northern Andean hinterland of Colombia. The Middle Magdalena Valley basin, situated between the Central Cordillera and Eastern Cordillera, contains a 5-10 km-thick succession of Upper Cretaceous to Quaternary fill. The integrated techniques show a pronounced change in provenance during the Paleocene transition from the lower to upper Lisama Formation. We interpret this as a shift from an eastern cratonic source to a western Andean source composed of magmatic-arc rocks uplifted during initial shortening of the Central Cordillera. The appearance of detrital chloritoid and a shift to more negative ɛ Nd(t=0) values in middle Eocene strata of the middle La Paz Formation are attributed to shortening-related exhumation of a continental basement block (La Cira-Infantas paleohigh), now buried, along the axis of the Magdalena Valley. The diverse provenance proxies also show distinct changes during middle to late Eocene deposition of the Esmeraldas Formation that likely reflect initial rock uplift and exhumation of the fold-thrust belt defining the Eastern Cordillera. Upsection, detrital zircon U-Pb ages and heavy mineral assemblages for Oligocene and younger clastic

  17. Prevención en fonoaudiólogos de la Universidad del Valle en Cali, Colombia Prevention and performance role of speech-hearing therapist from University of Valley in Cali, Colombia

    Directory of Open Access Journals (Sweden)

    Gustavo A. Cabrera

    1998-04-01

    Full Text Available INTRODUCCIÓN: Un curriculo de formación en fonoaudiología, idealmente, contempla fundamentación teórica-prática para el abordaje preventivo de desordenes de comunicación humana presentes en usuarios de serviços profesionales. Para explorar la coherencia de lo propuesto por un plan de estudios y las prácticas preventivas en el ejercicio profesional, se vinculó a los graduados del programa de estudios en fonoaudiologia de la Universidad del Valle con sede en la ciudad de Cali - Colombia. METODOLOGÍA: Se formuló un estudio descriptivo; 45 profisionales que cumplieron criterios de graduación, residencia y con ejercicio comprobado en la ciudad al momento del estudio, respondieron entre enero y abril de 1995 a un cuestionario autoadministrado de 13 items, formulados y validados según objetivos del estudio; referidos a variable laborales, ocupacionales y profesionales para describir y analizar la distribución del grupo según campo de ocupación, lugar de trabajo, tipo de institución a la que estam vinculados, grupo etáreo y área de comunicación humana en la que ejercían su prática professional; abordar el origen intra o extracurricular de sus conocimientos en prevención y la utilización-frequencia de estrategias y acciones específicas de prevención en las áreas de voz-habla, audición, lenguaje y aprendizaje. RESULTADOS: El 67% reconoció el plan de estudios como fuente relevante de sus conocimientos preventivos. Un 47% de profesionales usaba solo una entre nueve estrategias preventivas viables; un 29% afirmó haber usado maximo dos de tales alternativas de intervencíon. Para todas las areas de comunicación, en media, cerca del 60% de fonoaudiólogos nunca incorporó acciones preventivas de ninguna categoría. CONCLUSIÓN: La mayoría del grupo estudiado no incorpora en su ejercicio profesional estrategias ni acciones preventivas de desordenes de comunicación del modo propuesto en el perfil curricular, como es socialmente

  18. Exhumation history of the Northern Andes from the Cenozoic syn-tectonic sedimentary fill of the Middle Magdalena Valley Basin, Colombia

    Science.gov (United States)

    Moreno, C. J.; Caballero, V. M.; Horton, B. K.; Mora, A.

    2009-12-01

    The Central Cordillera and the Eastern Cordillera of the northern Andes form the western and eastern flanks of the Colombian Middle Magdalena Valley Basin, respectively. Previous estimates of the timing of onset of exhumation of the two cordilleras vary, and although some recent studies have been in agreement, more work is needed to develop a clear picture. The spatial and chronological distribution of deformation has direct implications for the shortening history of the greater South American Andean margin, as well as for improving predictions of the rapid, lateral facies changes associated with the varying nearby sediment sources. Field-based analyses of the basin fill using paleocurrent measurements of trough-cross-beds, clast imbrication and flute casts, not only provide new insights into the tectonic history, but directly complement recent detrital zircon U-Pb work completed in the MMVB. Between the lower and upper Paleocene strata, the paleocurrent direction shifts from northward to eastward, indicating that uplift of the Central Cordillera was underway by the mid-Paleocene and consistent with the shift from a cratonic to Central Cordilleran sediment source observed in the detrital zircon record. This paleocurrent shift occurs coevally with a shift from delta to fluvial facies. An eastward paleoflow in upper Eocene through lowest Oligocene strata indicate a continuing influence of the Central Cordillera. Paleocurrent directions in the lower Oligocene deposits are highly variable, and, beginning in the middle Oligocene strata, show a switch to a dominantly westward orientation that continues through the Neogene. As the orientation changes, deposits show an increase in energy from muddy, meandering river deposits, to coarser, braided channel facies. We attribute this switch, from eastward to westward paleocurrent orientations, to the onset of exhumation of the Eastern Cordillera. The results of a current, detailed sandstone petrographic study combined with

  19. Distribución espacial del dengue basado en herramientas del Sistema de Información Geográfica, Valle de Aburrá, Colombia / Spatial distribution of dengue based on Geographic Information Systems tools, Aburra Valley

    Directory of Open Access Journals (Sweden)

    Libardo A. Londoño C

    2013-08-01

    the years 2008, 2009 and 2011 in the Aburrá valley, under the jurisdiction of Medellín, Colombia, were taken as a case study. Methodology: Dengue cases of which the Medellín Health Secretary was notified were spatially located using the addresses of the patients' homes. ArcGis 10 software was used to geo-spatially locate the cases, while IDW and Slope spatial analysis tools were employed to demonstrate that the dengue phenomenon complies with the principle of spatial auto-correlation. Results and discussion: The disease shows spatial patterns in the south-west sector of Medellín; the Altavista township and the Belén and Guayabal municipalities, and it would be of great interest to study this phenomenon with environmental variables and to have more tools available for d

  20. Esporogénesis y esporas de Equisetum bogotense (Equisetaceae) de las áreas montañosas de Colombia

    OpenAIRE

    Rincón-Baron, Edgar Javier; Torres, Gerardo Andrés; Rolleri, Cristina Hilda

    2013-01-01

    Sporogenesis and spores of Equisetum bogotense (Equisetaceae) from mountain areas of Colombia. Studies on some reproductive traits in Equisetum species are scarce and valuable to understand species distribution. Therefore, a detailed study of the sporogenesis process and spore development in E. bogotense is presented, with an analysis of the main events during meiosis, maturation of spores, spore wall ultrastructure, orbicules and elaters. Specimens were collected from 500 to 4 500m in Cauca,...

  1. Hormigas como plagas potenciales en tres criaderos de mariposas del suroccidente de Colombia Ants as potential pest of butterflies in three rearing in the southwest of Colombia

    OpenAIRE

    María Catalina Sanabria-Blandón; Patricia Chacón de Ulloa

    2009-01-01

    La fauna de hormigas asociada con la zoocría de mariposas en los departamentos de Valle del Cauca y Quindío (Colombia), se colectó por captura manual en tres ambientes (mariposario, vivero y laboratorio). De 125 muestras se extrajeron 779 hormigas, pertenecientes a cinco subfamilias, 18 géneros y 24 especies. El mayor número de especies se registró en el área de laboratorio (17), seguido por vivero (16) y mariposario (13). No se encontraron diferencias significativas (Chi² = 6.019, g.l.= 10, ...

  2. Vulnerabilidad a la contaminación, zona sur acuifero del valle del cauca, colombia

    OpenAIRE

    Ríos Rojas, Liliana; Vélez Otálvaro, María Victoria

    2009-01-01

    El movimiento de un contaminante desde la superficie del suelo hasta el agua subterránea puede tomar días ó décadas antes que el impacto de la contaminación resulte evidente y hasta este momento grandes volúmenes del acuífero estarán involucrados. Por lo cual las medidas de limpieza, casi siempre tienen un alto costo económico y su ejecución es bastante dispendiosa desde el punto de vista técnico. Es ésta entonces una justificación válida para un estudio de vulnerabilidad a la contaminación q...

  3. Regional flow analysis for the Valle del Cauca Region in Colombia

    Directory of Open Access Journals (Sweden)

    González C. A.

    1996-12-01

    Full Text Available Flow frequancy analysis of high and low flows is curry out by using the regional Probability Weighted Moments (PWM algorithm. The distributions fitted to the región area: General extreme value (GEV, Wakeby, Extreme value type 1 (EVl or Gumbel and Weibull (two or three parameters distribution. In order to selecte the distribution appropite for each series for test of goodness of fit were carry out, manely, chi square, 'DMAX ' goodness of ifit, probability plot criteria and a graphical test base on Montecarlo simulation. The selection of the distribution is made to depend on the performance of the distributions under tests over all test. The distributions selected for annnual máximum flow series is the EVl distribution while the GEV distribution is selected for the annual minimum flow series.

  4. Sediment and solute transport in a mountainous watershed in Valle del Cauca, Colombia

    Science.gov (United States)

    Guzman, Christian; Hoyos Villada, Fanny; Morales Vargas, Amalia; Rivera, Baudelino; Da Silva, Mayesse; Moreno Padilla, Pedro; Steenhuis, Tammo

    2015-04-01

    Sediment samples and solute concentrations were measured from the La Vega micro watershed in the southwestern region of the Colombian Andes. A main goal of this study was to improve prediction of soil surface and soil nutrient changes, based on field measurements, within small basin of the Aguaclara watershed network receiving different types of conservation measures. Two modeling approaches for stream discharge and sediment transport predictions were used with one of these based on infiltration-excess and the other on saturation-excess runoff. These streams are a part of a recent initiative from a water fund established by Asobolo, Asocaña, and Cenicaña in collaboration with the Natural Capital Project to improve conservation efforts and monitor their effects. On-site soil depth changes, groundwater depth measurements, and soil nutrient concentrations were also monitored to provide more information about changes within this mountainous watershed during one part of the yearly rainy season. This information is being coupled closely with the outlet sediment concentration and solute concentration patterns to discern correlations between scales. Lateral transects in the upper, middle, and lower part of the hillsides in the La Vega micro watershed showed differences in soil nutrient status and soil surface depth changes. The model based on saturation-excess, semi-distributed hydrology was able to reproduce discharge and sediment transport rates as well as the initially used infiltration excess model indicating available options for comparison of conservation changes in the future.

  5. [Seed germination of four tree species from the tropical dry forest of Valle del Cauca, Colombia].

    Science.gov (United States)

    Vargas Figueroa, Jhon Alexander; Duque Palacio, Olga Lucía; Torres González, Alba Marina

    2015-03-01

    The ecological restoration strategies for highly threatened ecosystems such as the tropical dry forest, depend on the knowledge of limiting factors of biological processes for the different species. Some of these include aspects such as germination and seed longevity of typical species present in those forests. In this study, we evaluated the effect of light and temperature on seed germination of two Fabaceae (Samanea saman and Jacaranda caucana) and two Bignoniaceae (Pithecellobium dulce and Tabebuia rosea) species having potential use in restoration, and we analyzed the seed storage behavior of these species for a three months period. To study the light effect, four levels of light quality on seeds were used (photoperiod of 12 hours of white light, darkness and light enriched in red and far-red, both for an hour each day), and we combined them with three levels of alternated temperatures (20/25, 20/30 and 25/30*C-16/8h). For the storage behavior, two levels of seed moisture content particular for each species were used (low: 3.5-6.1% and high: 8.3-13.8%), with three storage temperatures (20, 5 and -20 degrees C) and two storage times (one and three months). The criterion for germination was radicle emergence which was measured in four replicates per treatment, and was expressed as percentage of germination (PG). There were significant differences in germination of Samanea saman and Jacaranda caucana among light and temperature treatments, with the lowest value in darkness treatments, whereas germination of Pithecellobium dulce and Tabebuia rosea did not differ between treatments (PG>90%). The most suitable temperature regime to promote germination in all species was 25/30 degrees C. These four species showed an orthodox seed storage behavior. We concluded that seeds of R dulce, J. caucana and T. rosea did not have an apparent influence of all light conditions tested in their germination response, which might confer advantages in colonization and establishment processes, while S. saman did not germinate well in darkness. We suggest the use of seeds of P dulce, J. caucana and T rosea in ecological restoration processes, due to their tolerance and germination under a wide range of temperature and light conditions. Futhermore, seeds of S. saman might be used in open areas such as forest gaps. PMID:26299129

  6. Aves de la costa del pacífico, municipio de guapi, cauca, colombia, ii

    OpenAIRE

    Olivares, Antonio

    2012-01-01

    Los ejemplares de esta serie coinciden can la descripción original (Tinamus latifrons Salvadori, 1895: 506-Balzar, occidente del Ecuador) . La hembra es más grande que los machos: ala, 247; tarso, 68; en los machos: ala 240, 228, 218; tarso, 62, 60, 67 mm. La cresta occipital se encuentra normalmente desarrollada en todos los ejemplares.

  7. Hallazgo del falarópodo de wilson (steganopus tricolor) en colombia

    OpenAIRE

    Dugand, Armando

    2012-01-01

    La familia de las Falaropódidas (Charadriiformes.-Sub-Orden Charadrii) no ha sido señalada todavía en Colombia. Por lo tanto es interesante registrar aquí por primera vez su presencia ocasional en este país con un ejemplar del Falarópodo de Wilson coleccionado cerca de Popayán, que ha llegado a nuestro Instituto como parte de un canje de pieles con el Museo de Historia Natural de la Universidad del Cauca.

  8. Sistema Ferroviario para la Región Andina de Colombia

    OpenAIRE

    Duque Escobar, Gonzalo

    2015-01-01

    Como fundamento del sistema intermodal de carga para la Región Andina de Colombia se requiere una estructuración de la red ferroviaria, para implementar una red de transporte soportada en dos ejes fundamentales: la hidrovía del Magdalena y el corredor férreo del Río Cauca con extensión desde Buenaventura hasta Urabá; ambos enlazados por un ferrocarril de montaña que parte de Puerto López en la hidrovía del Meta, pasa por el Altiplano, baja a la Dorada, y llega al Km 41 donde se articularía al...

  9. Nueva especie de rana (atelopus) de los farallones de cali, cordillera occidental de colombia

    OpenAIRE

    Kattan, Gustavo

    2012-01-01

    Durante la realización de colecciones herpetológicas en el Departamento del Valle del Cauca, fue encontrada una especie no descrita de Atelopus (Anura: Bufonidae) en los farallones de Cali, a 2600 m de altura. Esta es la primera especie en este género que se encuentra a elevaciones superiores a 2000 m en la Cordillera Occidental. Se conocen varias especies de Atelopus en las Cordilleras Central y Oriental de Colombia y en los Andes ecuatorianos (COCHRAN y GOIN 1970; PETERS 1973; RIVERO 1963) ...

  10. Hormigas como plagas potenciales en tres criaderos de mariposas del suroccidente de colombia

    OpenAIRE

    María Catalina Sanabria-Blandón; Patricia Chacón de Ulloa

    2009-01-01

    La fauna de hormigas asociada con la zoocría de mariposas en los departamentos de Valle del Cauca y Quindío (Colombia), se colectó por captura manual en tres ambientes (mariposario, vivero y laboratorio). De 125 muestras se extrajeron 779 hormigas, pertenecientes a cinco subfam...

  11. Brachyotum sertulatum, una especie nueva de Melastomataceae de Colombia

    OpenAIRE

    Ulloa Ulloa, Carmen

    2007-01-01

    A new species of Melastomataceae, Brachyotum sertulatum C. Ulloa, from southern Colombia is described and illustrated. It is characterized by a conspicuous single row of large tubercles sub-marginal on the leaf blade above. It is endemic to the Páramo de las Papas in the Colombian massif (Macizo Colombiano), between the departments of Cauca and Huila at around 3400 m. Due to the restricted distribution and small population it is assigned the category of Endangered (EN).Se describe e ilustra B...

  12. Aplicación y comparación de estrategias activas de enseñanza en las ciencias naturales en el tema del "dogma central de la biología", utilizados en dos grupos del grado 7° de la Institución educativa José Antonio Aguilera, del Municipio de San Pedro (Valle del cauca)

    OpenAIRE

    Guacaneme Montaño, Elizabeth

    2012-01-01

    El trabajo de grado consistió en la aplicación de estrategias activas de enseñanza en ciencias naturales para el tema del dogma central de la biología, hacer una comparación entre ellas y seleccionar una que genere un mejor impacto entre los estudiantes del grado séptimo (7º) de la Institución Educativa José Antonio Aguilera, del municipio de San Pedro - Valle del Cauca (Colombia). Además de analizar la incidencia de factores diarios en que viven los estudiantes en el aprendizaje con estas es...

  13. Santandes (Colombia

    Directory of Open Access Journals (Sweden)

    J.D. Mercado Gómez

    2007-01-01

    Full Text Available Se estudió e ilustró la morfología polínica de 5 géneros y 29 especies de Melastomataceae registradas para Pamplona, Norte de Santander, Colombia, los taxa incluidos en el presente trabajo fueron: Chaetolepis, Leandra, Miconia, Monocheatum y Tibouchina. Las observaciones de los granos de polen se realizaron con microscopio de luz. La morfología polínica presenta una gran variabilidad entre los géneros ya que estos son radialmente simétricos, usualmente heterocolpados, heterosincolpados y estefanocolporados; presentan una exina psilada, escabrada hasta rugulada. Esta diversidad de formas, le confieren a la familia un carácter eurinopalinológico, que coincide con su presencia en gran número de hábitats y biomas.

  14. Use of Isotopic Techniques for the Assessment of Hydrological Processes in Wetlands (Cienaga Colombia)

    International Nuclear Information System (INIS)

    The Cienaga Colombia wetland is located in the Bajo Cauca Antioqueno region where the 'Man' river flows into the Cauca River. Hydrological processes on the Cienaga Colombia wetland are complex because of the interactive effects of both local and regional elements, associated with a typical tropical wet climatic regime. In this groundwater dependent wetland hydrological studies have been conducted, including hydrochemical analyses and isotope tracers, to describe and understand the interactions between groundwater and surface water, not only for the wetland itself but also for the entire catchment area. Rain samples (five year record) were used to obtain the LML: δ2H = 8.03 δ18O +9.9. The evaporation line is: δ2H = 5.9 δ18O - 7.3. According to the analyses, both groundwater and surface waters have the same isotopic signatures. Unsustainable land use practices along with current and predicted global environmental changes may cause negative impacts on the hydrological functioning of the region, affecting primarily, but not exclusively, evapotranspiration-recharge processes and the sustainability of the entire system. (author)

  15. Cambios en coberturas de áreas y usos del suelo en tres humedales en el Valle del Cauca

    Directory of Open Access Journals (Sweden)

    Christian Andrés Núñez Restrepo

    2009-10-01

    Full Text Available El objetivo de este proyecto fue aplicar la tecnología de Sistemas de Información Geográfica (SIG, en especial los programas ARCGIS y ERDAS, como metodología para identificar los cambios de cobertura de área y uso del suelo en las zonas de los humedales la Bolsa, Charco de Oro y el Pital, localizados en la parte plana del municipio de Andalucía corregimiento de Campoalegre y El Salto (Valle del Cauca, Colombia. Para el estudio se utilizaron fotografías aéreas de 1950 y 1998, imágenes Landsat 2002 y cartografía base de la zona. Los procesos dentro de la metodología fueron depurados, un ejemplo es la georreferenciacion de las fotografías y la creación de fotomosaicos que conllevan una imagen con mejor apariencia visual y más fácil identificación de los humedales, de manera que al hacer comparaciones, aquellos arrojen cambios de cobertura en la zona de estudio. Así, la utilización de los SIG y un correcto tratamiento de las imágenes satelitales resultan de gran ayuda no sólo en la obtención de los cambios en el uso del suelo y los humedales, sino también en diferentes áreas donde la utilización de esta tecnología es poco común.

  16. Descripción de un caso de labio leporino y paladar hendido en bubalus bubalis bubalis (búfalo), Sucre, Colombia - Description of a case of harelip and cleft palate in bubalus bubalis bubalis (buffalo), Sucre, Colombia.

    OpenAIRE

    Montes Vergara, Donicer; De La Ossa Velázquez, Jaime

    2012-01-01

    ResumenEl presente trabajo muestra el hall azgo de un caso de labio leporino y paladar hendido en una cría de Bubalus bubalis bubalis (Murrah x Murrah) en una la finca, dedicada a la explotación de esta especie de ganado ubicada en la depresión del Bajo Cauca y San Jorge del Municipio de San Benito Abad, departamento de Sucre, Colombia.SummaryThe present work report the discovery of a case of harelip and cleft palate in a newborn of Bubalus bubalis bubalis (Murrah x Murrah) on a farm dedicate...

  17. Cartografía social como metodología participativa y colaborativa de investigación en el territorio afrodescendiente de la cuenca alta del río Cauca

    Directory of Open Access Journals (Sweden)

    Daniel Varela Corredor

    2012-12-01

    Full Text Available Este articulo explora las oportunidades y los desafíos de la cartografía social como metodología participativa y colaborativa de investigación para caracterizar los conflictos socioambientales en tres territorios de la cuenca alta del rio Cauca, al suroccidente de Colombia. El texto esta organizado en cinco partes: (i introducción al articulo, (ii descripción del problema y del contexto de investigación, (iii presentación del contexto etnográfico y decisiones metodológicas, (iv reflexión sobre el proceso y los productos cartográficos, y (v conclusiones sobre los principales desafíos metodológicos identificados durante el desarrollo de esta investigación.

  18. La inserción al Asia-Pacífico, oportunidades y desafíos para el Valle del Cauca y la región pacífica colombiana

    OpenAIRE

    Ricardo Coutin

    2014-01-01

    Resumen: El objetivo general del texto es brindar una aproximación a los retos y las oportunidades que representa, para el Valle del Cauca y la Región Pacífica colombiana, la inserción al Asia-Pacífico. Para lo cual se plantean tres objetivos específicos: primero, analizar someramente el contexto económico comercial del Asia-Pacífico y América Latina, con especial énfasis en Colombia y los demás países de la Alianza del Pacífico (AP); segundo, estudiar las oportunidades y los retos para el Va...

  19. Compilación y análisis sobre contaminación del aire producida por la quema y la requema de la caña de azúcar, saccharum officinarum L. en el valle geográfico del río cauca

    OpenAIRE

    Madriñán Palomino, Carlos Eduardo

    2002-01-01

    Esta compilación intenta reunir la información existente en Colombia sobre la quema y la re-quema de la caña de azúcar Saccharum Officinarum L, analizando la contaminación del aire producida por esta actividad en el valle geográfico del rio cauca área de mayor influencia de este cultivo en Colombia. La investigación monográfica inicia con una breve historia alrededor de los motivos que llevaron a los agroindustriales a la implementación de esta práctica en la cosecha de la caña de azúcar;...

  20. Presence of PAHs in water and sediments of the Colombian Cauca River during heavy rain episodes, and implications for risk assessment.

    Science.gov (United States)

    Sarria-Villa, Rodrigo; Ocampo-Duque, William; Páez, Martha; Schuhmacher, Marta

    2016-01-01

    In Colombia little attention has been paid to river pollution with Polycyclic Aromatic Hydrocarbons (PAHs). Low environmental control and legislation in such emerging region could significantly contribute to high PAHs releases. In this study, we report the presence of PAHs in water and sediments of the Cauca River (Colombia). Three sampling campaigns were carried out between May 2010 and June 2011, and the samples were collected at eight relevant sites. The sampling time included measuring before, during, and after a season of heavy rains, which were influenced by the global coupled ocean-atmospheric phenomenon, which affected tropical countries with huge flooding, commonly called "La Niña", and/or "El Niño" Southern Oscillation (ENSO). The highest mean ∑PAH concentrations were 4476.5 ng/l and 1582.7 ng/g in water and sediments, respectively. The PAHs most detected were Benzo[b]fluoranthene, Benzo[k]fluoranthene, and Pyrene in sediments; and Fluorene, Acenaphtylene, and Anthracene in water. After the season of rains statistically significant higher PAH concentrations were detected. The results of the study were compared to other rivers worldwide at both environmental compartments, and did not show concentrations of special concern. In some sites, concentrations detected of PAHs were higher than screening benchmarks for ecological protection. Estimation of human health risks was carried out, and the results suggested some likely carcinogenic effects due to PAHs especially in children exposed during current recreational swimming and adults working in low technology sand extraction. PMID:26303092

  1. Evaluación agronómica de accesiones de Capsicum del banco de germoplasma de la Universidad Nacional de Colombia Sede Palmira Agronomic evaluation of Capsicum accessions of the gene Bank of the National University of Colombia at Palmira's campus

    Directory of Open Access Journals (Sweden)

    Catherine Pardey Rodríguez

    2009-01-01

    Full Text Available En un diseño de bloques incompletos 10 x 10 con tres repeticiones se estudiaron descriptores cuantitativos relacionados con producción por planta, contenido de capsaicina y presencia de virus en 100 accesiones de Capsicum pertenecientes a la Universidad Nacional de Colombia. Las diferencias entre las accesiones fueron explicadas por el contenido de capsaicina, características asociadas con la producción por planta y características del fruto. Se encontró correlación inversa entre el contenido de capsaicina y producción; número de frutos por planta con peso de fruto. La dispersión de las accesiones en el plano cartesiano situó las variedades comerciales Cayenne, Tabasco y Habanero, en función de producción, peso y cantidad de frutos, en posiciones desventajosas con respecto a los promedios generales de las características de las otras accesiones. Cuatro accesiones superaron a Tabasco en contenido de capsaicina. Cuatro tipos de virus (potyvirus, geminivirus y cucumovirus y virus del mosaico del tabaco TMV se presentaron en el lote de evaluación. Los virus actuaron en forma conjunta; los potyvirus con los cucumovirus y TMV; los geminivirus con TMV.100 accessions from Capsicum gene Bank of the National University of Colombia at Palmira's campus, under field conditions of the experimental station at Candelaria, Cauca Valley were studied. In a design of incomplete blocks 10 x 10 with three repetitions, quantitative descriptions were evaluated. The characteristics were related with yield, capsaicin content and virus presence.The agronomic evaluation found that the differences among the accessions are explained for the capsaicin content, yield, characteristics associated and fruits characteristics associated. Inverse correlation among the capsaicin content with production, quantity of fruits for plant with weight was found. The dispersion of the accessions in the Cartesian axis placed the commercial varieties: Cayenne, Tabasco and

  2. (Colombia 2010

    Directory of Open Access Journals (Sweden)

    Sandra Constanza Cañón

    2011-01-01

    Full Text Available El presente estudio pretende indagar sobre las prácticas y comportamientos sexuales en una población universitaria, ya que comportamientos positivos pueden desarrollar mejores habilidades para la prevención de conductas de alto riesgo, mayor satisfacción sexual y, por ende, vivir más plenamente. La presente investigación es de tipo transversal y en ella participaron estudiantes de todas las facultades de la Universidad de Manizales (Caldas, Colombia, que estaban cursando entre primero y noveno semestre. La muestra de esta investigación la constituyeron 267 personas sobre una población de 3600 estudiantes regulares; se obtuvo mediante un muestreo probabilístico estratificado por género y facultad. La edad media fue de 21.69 años; la mayor proporción fue de mujeres en un 58.8%; 1.5% eran homosexuales y un 5%, bisexuales, el método de anticoncepción más usado fueron los métodos de barrera en un 41.3%; el 15.2% habían tenido alguna infección de transmisión sexual. En lo que se refiere a las prácticas sexuales el 22.8% realizan todas las prácticas (masturbación, sexo oral, sexo anal, sexo vaginal; en cuanto al promedio de edad de inicio de relaciones sexuales fue de 16.09 años; están de acuerdo con la despenalización total del aborto en un 53.1%; el 73.2% adoptan una posición de aceptación y tolerancia hacia la homosexualidad. El estudio permitió ver la influencia de varias variables como género, familia, religión y formación educativa sobre el comportamiento y la práctica sexual responsable.

  3. Observaciones preliminares del comportamiento agronómico de Canavalia ensiformis L en condiciones del Valle del Cauca

    Directory of Open Access Journals (Sweden)

    Castellar P. Nelson

    1986-03-01

    Full Text Available Se realizaron observaciones sobre aspectos fitosanitarios, morfológicos y fenológicos, aspectos agronómicos, nodulación y componentes del rendimiento para tres distancias de siembra. La especie presenta tres hábitos de crecimiento (arbustivo determinado, arbustivo con guía corta e indeterminado con guía larga trepador. La fase vegetativa dura 69 d días y 122 días la reproductiva Los insectos con mayor potencial de daño son Corythuca gossypii, Anticarsia gemmatalis y Caryedes grammicus, este último registrado por primera vez en el mundo. Se presentaron virosis. Antracnosis, y mildeo polvoso. El virus se clasificó como Potyvirus (CMV, quinto virus a nivel mundial en esta especie. La mejor distancia de siembra fue 1 x 0.6 m, siendo el número de vainas por planta el factor que más influye en el rendimiento.The present study had as objective, to realize the prelyminar observations of the Canavalia ensiformis behaviour in the Cauca's Valley. Observations were made about phytopatologics and entomologics, morphologics and phenologics aspects, agronomic bahevior, nodulation and the yield's components for 3 distances of sowing. C. ensiformis presents 3 growth's habits: determinated shrub, shrub habit with short guide and indeterminated habit with long guide, climbing. C. ensiformis presents one vegetative of 69 days and one reproductive phase of 122 days. The pests insects with more damage's potential are: Corythuca gossypii, Anticarsia gemmatalis y Caryedes grammicus, this later the first report in the world. Virosis, anthracnosis and powdery mildew were the diseases with higher incidence. The virus was named CMV, one potyvirus, which constitute the 5 thin the world for Canavalia. The distance 1 x 0.6 m was the best treatment among the evaluated, and the number of pods for plant is the principal component of the yield.

  4. Counterterrorism policy in Colombia

    OpenAIRE

    Self, Kevin A.

    2007-01-01

    The purpose of this thesis is to suggest a coherent, credible, and long-term counterterrorism policy in Colombia. The events of September 11, 2001 heightened U.S. awareness of Colombian terrorist organizations, the most powerful being the Revolutionary Armed Forces of Colombia (FARC). The U.S. counterterror approach in Colombia appears fragmented, with only minor changes to its previous drug control policies. In contrast, the Colombian government has developed and implemented a policy to ...

  5. Dental education in Colombia

    OpenAIRE

    JORGE A. JARAMILLO; Pulido, Jairo H. Ternera; Núñez, Jaime A. Castro; Bird, William F.; Komabayashi, Takashi

    2010-01-01

    This article describes Colombia's development of formal dentistry, its dental school system, curriculum, and dental licensure, and current issues in oral health care. In 1969, there were only 4 dental schools in Colombia; at this writing there are 21. Five dental schools are public and the other 16 are private. Nearly all classes are conducted in Spanish. Undergraduate pre-dental coursework is not a prerequisite for dental school in Colombia. To obtain licensure, Colombian dental students mus...

  6. [Characterization of the genetic diversity of the fish Brycon henni (Characiformes: Characidae) in central Colombia with RAPD markers].

    Science.gov (United States)

    Pineda Santis, Hermes; Arboleda Chacón, Lucy; Echeverry Echavarria, Amparo; Urcuqui Inchima, Silvio; Pareja Molina, Diego; Olivera Angel, Martha; Builes Gómez, Juan

    2007-01-01

    Knowledge on the genetic diversity of wild fish species is essential for conservation and appropriate management of individuals in repopulation programs. In Colombia, Brycon henni has been reported in the Magdalena and Cauca river basins, but the population and range have diminished as a consequence of anthropic activities. In this study, the Random Amplified Polymorphic DNA (RAPD) was used to estimate the actual genetic structure in this species. For the purpose, six sample sites located in the department of Antioquia (Central Chain Mountains of Colombia) were used. Thirty five primers (87.5%), out of forty used, yielded 1 466 reliable and consistent fragments; 417 were considered as unique fragments able to discriminate among the Magdalena (Humarada-1 and Humarada-2) and Cauca (Piedras, La Clara y Guaracfi) river basins samples, suggesting that each is a discrete unit. This diversity suggests that anthropic effects of over fishing, dam building, deforestation and water pollution, have contributed to the isolation of these fish groups on the high mountains. Brycon moorei and Colossoma macropomum, as an interspecific control groups, were placed out of the B. henni general group, confirming their taxonomic classification through morphologic data. The RAPD technique was useful to know the genetic diversity and to discriminate among B. henni populations from different geographic origins, as a basis for an appropriate plan of repopulation, conservation and wildlife management. PMID:19086404

  7. Utilizing NASA EOS Data for Fire Management in el Departmento del Valle del Cauco, Colombia

    Science.gov (United States)

    Brenton, J. C.; Bledsoe, N.; Alabdouli, K.

    2012-12-01

    statistically exploring the demographic and environmental factors of fire risk, such as land surface temperature, precipitation, and NDVI .4.) A dynamic fire risk evaluation able to generate a dynamic map of ignition risk based on statistical analysis factors. This study aims to research integrating MODIS, Landsat and ASTER data along with in-situ data on environmental parameters from the Corporation of the Cauca Valley River (CVC) along with other data on social, economical and cultural variables obtained by researchers of the Wild Fire Observatory (OCIF) from the "Universidad Autónoma de Occidente" in order to create an ignition cause model, dynamic fire risk evaluation system and compile any and all geospatial data generated for the region. In this way the research will help predict and forecast fire vulnerabilities in the region. The team undertook this project through SERVIR with the guidance of the scientist, Victor Hugo Ramos, who was the leader and principal investigator on the SIGMA-I.

  8. The Cauca gold mesoeconomy and dependence retroactivity: Notes on conjuncture and regional imbalance

    Directory of Open Access Journals (Sweden)

    Ronald Alejandro Macuacé-Otero

    2013-12-01

    Full Text Available Despite the increase in the price of raw materials and the goodness of the projections for the Colombian economy, there are still unclear territorial changes that are trying to reach the height of national macroeconomic successes within gold mining. The aim of this paper is therefore placing in context the space-redistributive implications of this growth pattern in the department of Cauca, highlighting the effects both on sectorial economic composition and the geographical displacement of mining activity.

  9. Pentachlorophenol reduction in raw Cauca river water through activated carbon adsorption in water purification

    OpenAIRE

    Camilo Hernán Cruz Vélez; Magally González; Héctor Mario Gutiérrez; Luz Edith Barba; Juan Carlos Escobar; Luis Germán Delgado; Patricia Torres

    2010-01-01

    Reducing chemical risk in raw water from the River Cauca (caused by the presence of pentachlorophenol and organic matter (real color, UV254 absorbance)) was evaluated at bench scale by using three treatment sequences: adsorption with powdered ac-tivated coal (PAC); adsorption – coagulation; and, adsorption – disinfection – coagulation. The results showed that although PAC is appropriate for pentachlorophenol removal, and its use together with the coagulant (aluminium sulphate) significantly i...

  10. Edad y provenincia de las rocas volcánico sedimentarias de la formación combia en el suroccidente antioqueño colombia

    OpenAIRE

    Ramírez S., Diego A.; López C., Adriana; Sierra L, Gloria M.; Toro V., Gloria E.

    2008-01-01

    Los estudios petrográficos y de paleocorrientes realizados en la Formación Combia (Mioceno), departamentos de Antioquia y Caldas en Colombia sugieren que ésta se formó a partir flujos volcánicos y volcanicoclásticos que se originaron hacia el oeste y este del actual Valle del Río Cauca.Los estudios de trazas de fisión en circones colectados de diferentes horizontes de la Formación Combia arrojan edades Cretácicas, Paleoceno Tardío EocenoTemprano y Mioceno Tardío, las cuales han sido interpret...

  11. Estudio de las características del drenaje de un suelo orgánico del páramo de las papas, Cauca Study of characteristics of drainage conditions in an organic soil at paramo de las papas

    Directory of Open Access Journals (Sweden)

    Tafur Hermann Harold

    1990-12-01

    Full Text Available En la hacienda Los Andes, ubicada en el municipio de San Sebastián, departamento del Cauca, Colombia (2.700 m.s.n.m., se adelantó un estudio acerca de las características hidráulicas de sus suelos, determinados por un alto contenido de materia orgánica (suelos orgánicos. Se encontró que a pesar de la alta porosidad que puede presentar un suelo orgánico, su permeabilidad no necesariamente, responde directamente a esta característica, porque está dominada esencialmente por microporos. El mal drenaje de estos suelos (encharcamiento, está determinado por la alta capacidad de almacenamiento de agua de su vegetación natural, el musgo, el cual a su vez tiene baja transmisibilidad. Se describen los procesos mediante los cuales los agricultores adecuan los suelos para el uso agrícola.A study about the hydraulic characteristics of the organic soil in a farm located at Paramo de Las Papas (2700 m.a.s.l., Colombia, was carried out. It was found that permeability is not directly related with the high porosity of this type of soils. The present water logging is determined by the high water holding capacity of the surface vegetation, that is constitued by moss species, material that have a low transmisibility. In this paper, the proccess by which farmers reclaim the soils for cultivation, is described too.

  12. Agro-industria cañera y uso del agua: análisis crítico en el contexto de la política de agrocombustibles en Colombia

    OpenAIRE

    Mario Alejandro Pérez; Miguel Ricardo Peña; Paula Alvarez

    2011-01-01

    Este artículo muestra la relación entre las políticas económicas que han promovido al sector cañicultor y su impacto sobre el uso del agua en Colombia, haciendo énfasis en el Valle del Cauca, tanto en su función abastecedora como en la asimiladora. Además, examina la capacidad de soporte del territorio en el valle del río Cauca, asociado a la dinámica futura del cultivo de caña como resultado de las nuevas políticas de apoyo a los agrocombustibles.This work shows the relationship amongst econ...

  13. Spatial and seasonal mercury distribution in the Ayapel Marsh, Mojana region, Colombia.

    Science.gov (United States)

    Marrugo-Negrete, José; Benítez, Luís Norberto; Olivero-Verbel, Jesús; Lans, Edineldo; Vazquez Gutierrez, Felipe

    2010-12-01

    Geographical and temporal changes of total mercury (T-Hg) concentrations in sediments, macrophytes and fish were evaluated in the Ayapel Marsh, Mojana, Colombia. Sampling was conducted during 2006-2007, including both rainy and dry seasons, and T-Hg was measured using atomic absorption spectroscopy. Distribution of T-Hg in sediments and the macrophyte Eichhornia crassipes showed that higher concentrations were found along the flooding pathway of the Cauca River. Hg has also polluted the food chain. Highest T-Hg concentrations in fish were detected for the carnivorous Pseudoplatystoma fasciatun (0.432 ± 0.107 μg/g, fresh weight [fw]), and lowest in the non-carnivorous Prochilodus magdalenae (0.143 ± 0.053 μg/g, fw), with differences between trophic levels. T-Hg for fish samples (0.298 ± 0.148 μg/g, fw) did not exceed the limit consumption level (0.50 μg/g, fw). It is concluded that mercury-polluted sediments from the Cauca River, contribute to Hg deposition into the Ayapel Marsh. Accordingly, interventions must be conducted to decrease Hg accumulation in fish. PMID:21161806

  14. Relationship between two shading systems of coffee and some properties of the soil in the plateau of Popayán, Colombia Relación entre dos sistemas de sombrío de café y algunas propiedades del suelo en la meseta de Popayán, Colombia

    OpenAIRE

    Sadeghian Siavosh; Paz Iván Enrique; Sánchez de Prager Marina

    2006-01-01

    At Figueroa a small town of the municipality of Popayán, Department of Cauca, Colombia, in eight farms located between 1750 and 1800 meters above sea level, the microbial activity in the plant rizosphere of the Colombian cof fee variety was estimated to relate it with some properties of the soil and shading was estimated. Soil samples were taken 0 and 10 cm during in the grain harvest season (june/05) to determine physical, chemical and biological properties of the soil. In addition,...

  15. Caracteres moleculares para la determinación taxonómica de tres especies de Lutzomyia (Diptera: Psychodidae, vectores potenciales de Leishmania presentes en el valle de Aburrá, Colombia Molecular characters for the taxonomic determination of three species of Lutzomyia (Diptera: Psychodidae, potential Leishmania vectors found in the Aburrá valley, Colombia

    Directory of Open Access Journals (Sweden)

    Alveiro Pérez-Doria

    2008-12-01

    Full Text Available En Colombia están registradas 143 especies de Lutzomyia França, pero menos del 7% de éstas se encuentran incriminadas como vectores de Leishmania spp. Debido a la alta semejanza morfológica de algunas especies vectoras con otras no vectoras, se necesitan caracteres taxonómicos alternativos para identificar correctamente los flebotomíneos de cada zona geográfica del país. Con este objetivo, en el presente trabajo se secuenció el extremo 3' del gen mitocondrial que codifica para la proteína citocromo b en tres vectores potenciales de Leishmania presentes en el valle de Aburrá, Colombia, Lutzomyia hartmanni (Fairchild y Hertig, L. columbiana (Ristorcelli y Van Ty y L. tihuiliensis Le Pont, Torrez-Espejo y Dujardin. A partir del alineamiento múltiple de nucleótidos se determinaron los sitios polimórficos, las distancias genéticas pareadas netas (p y la entropía. Las secuencias de nucleótidos fueron trasladadas a aminoácidos para estimar el número de sustituciones sinónimas y no sinónimas. En el alineamiento múltiple de 321 nucleótidos del gen citocromo b de L. columbiana, L. hartmanni y L. tihuiliensis se detectaron 83 sustituciones. En la secuencia parcial de la proteína se encontraron 18 reemplazos de aminoácidos. Las distancias genéticas interespecíficas fluctuaron en un rango mínimo de 0,137 entre L. tihuiliensis y L. columbiana, y un máximo de 0,215 entre L. columbiana y L. hartmanni. Los polimorfismos detectados en la secuencia de nucleótidos del gen y de aminoácidos de la proteína constituyen caracteres moleculares potencialmente útiles para la determinación taxonómica de estas especies de flebotomíneos.To date, 143 species of Lutzomyia França are recorded in Colombia, but less than 7% is incriminated in the transmission of Leishmania spp. Alternative taxonomic characters are necessary to correctly identify the particular sand fly fauna in each Colombian region, and the separation of morphologically

  16. Status and distribution of the West Indian manatee, Trichechus manatus manatus, in Colombia

    Science.gov (United States)

    Montoya-Ospina, R. A.; Caicedo-Herrera, D.; Millan-Sanchez, S. L.; Mignucci-Giannoni, A. A.; Lefebvre, L.W.

    2001-01-01

    Historical and recent information on the status and distribution of West Indian manatee, Trichechus manatus manatus, in Colombia was reviewed. Opportunistic and systematic interviews were also conducted. Historical information suggested that the distribution of manatees had been reduced in the Caribbean basin. Manatees can be found in the Atrato, Sinu??, San Jorge, Cauca, Cesar and Magdalena rivers and the Cie??naga Grande de Santa Marta marsh in the Caribbean basin, and in the Meta River in the Orinoco basin. The Magdalena riparian system provides the largest area of suitable habitat, which also has the highest frequency of captures. Most animals (81.20%) were killed for sale or to share meat in a subsistence base. Hunting is apparently increasing but capture with nets still represents the species' major direct threat. Habitat destruction occurs in all areas. International and national laws protect the species, however, funding is inadequate for effective enforcement of present laws. ?? 2001 Published by Elsevier Science Ltd. All rights reserved.

  17. Calentamiento global en Colombia

    OpenAIRE

    Duque Escobar, Gonzalo

    2011-01-01

    En atención a los conocidos eventos invernales que asolan la Patria, me he permitido adaptar este material sobre los efectos del Calentamiento global para el caso de Colombia, a partir de una conferencia que titulara Cambio climático y turismo en Colombia (2008), como una colaboración de la Universidad Nacional de Colombia Sede Manizales para conmemorar el Día Mundial del Medio Ambiente, invitando a reflexionar sobre la importancia de la adaptación ambiental.

  18. HOSPEDANTES DE Ralstonia solanacearum EN PLANTACIONES DE BANANO Y PLÁTANO EN COLOMBIA HOSTS OF Ralstonia solanacearum ON BANANA AND PLANTAIN PLANTATIONS IN COLOMBIA

    Directory of Open Access Journals (Sweden)

    Mónica Obregón Barrios

    2008-12-01

    Full Text Available La enfermedad del “Moko” causada por la bacteria Ralstonia solanacearum Raza 2, es uno de los problemas fitopatológicos más limitantes en la producción de plátano y banano en las regiones productoras. La bacteria cuenta con un amplio rango de hospederos, cerca de 50 familias botánicas y más de 200 especies. En plantaciones de banano y plátano de Colombia la bacteria se asocia con arvenses que se encuentran en altas poblaciones contribuyendo a su sobrevivencia y permanencia en el campo. Para la determinación de los hospedantes silvestres sintomáticos y asintomáticos en áreas afectadas en plantaciones de plátano y banano del Valle del Cauca, Quindío y Urabá, se realizó la colección de arvenses frecuentes en los focos afectados y el aislamiento en medio semiselectivo SMSA de la bacteria. 124 aislamientos fueron sometidos a pruebas bioquímicas y de patogenicidad en plantas de banano y plátano bajo condiciones similares a las de Urabá y Valle del Cauca. En las pruebas de patogenicidad 67 de 124 aislamientos evaluados fueron positivos, reproduciendo los síntomas típicos de la enfermedad como flacidez, clorosis, amarillamiento de hojas y muerte de las plantas. Se encontraron nuevas especies de arvenses hospedantes de la bacteria que corresponden a Chaptalia nutans, Seneciodes cinerea, Tripogandra glandulosa, Plenax hirtus, Peperomia pellucida, Tripogandra cumanenses, Desmodium sp, y Cissus sicyoides esta última perteneciente a la familia Vitaceae, la cual corresponde al registro de una nueva familia como hospedera. Se confirmó la presencia de la bacteria en hospedantes silvestres previamente mencionados.The moko disease caused by the bacterium Ralstonia solanacearum race 2, is one of the most limiting phytosanitary problem to deal with in plantain and banana production in Colombia . The bacterium has a wide host range, nearly 50 botanical families and over two hundred species. In plantain and banana plantations in Colombia

  19. Vulnerabilidad a la contaminación, zona sur acuífero del Valle del Cauca, Colombia.

    OpenAIRE

    Ríos Rojas, Liliana; Vélez Otálvaro, María Victoria

    2008-01-01

    El movimiento de un contaminante desde la superficie del suelo hasta el agua subterránea puede tomar días ó décadas antes que el impacto de la contaminación resulte evidente y hasta este momento grandes volúmenes del acuífero estarán involucrados. Por lo cual las medidas de limpieza, casi siempre tienen un alto costo económico y su ejecución es bastante dispendiosa desde el punto de vista técnico. Es ésta entonces una justificación válida para un estudio de vulnerabilidad a la contaminación q...

  20. Mercury bioaccumulation on tadpoles of a gold mining zone in dagua river, buenaventura, valle del cauca, colombia

    OpenAIRE

    Oscar Dario Hernandez Cordoba; Fernando Castro-Herrera; Martha Paez Melo

    2013-01-01

    Amphibians, particularly larval stages, are strongly sensitive to pollutants, so they have become useful indicators to assesshow different human activities affect ecosystems. In this way, tadpoles were used as bioindicators in the Medio Dagua zone,in Zaragoza town, where mining has released pollutants into the Dagua River (mostly heavy metals). Using spectrophotometry by cold vapor atomic absorption, we measured total mercury concentrations in tadpoles of five species, with a sediment sample ...

  1. ANÁLISIS DE LOS DISEÑOS EN LOS HIPOGEOS DEL PARQUE ARQUEOLÓGICO DE TIERRADENTRO, CAUCA, COLOMBIA

    OpenAIRE

    Armando Aroca Araújo

    2013-01-01

    Se presenta una aproximación a la lógica de construcción que dio origen a los diseños de la pintura mural, al interior de los hipogeos, del Parque Arqueológico de Tierradentro, siendo tal vez uno de los vestigios geométricos más representativos del patrimonio matemático colombiano. En particular, se analizarán algunos diseños de hipogeos ubicados en las estaciones de Segovia, El Duende, Alto de San Andrés y El Aguacate, que fueron elaborados en las paredes, techos, pilastras, nichos y columna...

  2. Fracciones de fósforo en suelos del Valle del Cauca con diferentes sistemas de cultivo de café

    Directory of Open Access Journals (Sweden)

    Diana Milena Mejía Umaña

    2011-07-01

    Full Text Available El trabajo tuvo como objetivo evaluar la influencia de los sistemas de cultivo de café: orgánico, convencional y orgánico-mineral, sobre las fracciones de fósforo (P en suelos del departamento del Valle del Cauca, Colombia. Las mediciones por fraccionamiento secuencial reducido se hicieron en el Laboratorio de Suelos del Centro Internacional de Agricultura Tropical (CIAT. El análisis estadístico se ajustó a un modelo de diseño completamente aleatorio en un arreglo en parcelas divididas con tres tratamientos y tres repeticiones. Los resultados mostraron que los contenidos de las fracciones orgánicas de P disponible y P moderadamente disponible variaron (P < 0.05 entre los sistemas de manejo orgánico y el convencional, este último, presentó los valores más bajos. El sistema orgánico-mineral mostró los mayores contenidos de P orgánico e inorgánico, y el sistema convencional presentó los valores más bajos de ambas fracciones de P. La fracción de P no-disponible fue más alta en los sistemas orgánicos comparado con el sistema convencional, mientras que en el sistema orgánico mineral se encontraron diferencias (P < 0.05 con respecto a los restantes sistemas. El P total mostró un comportamiento similar al de las fracciones. Los bajos contenidos de P en el sistema convencional se deben, posiblemente, a prácticas de manejo, como el uso de fertilizantes de síntesis química, la siembra a libre exposición en monocultivo y la ausencia de coberturas entre plantas.

  3. Intercambio cationico calcio-magnesio-sodio en algunos suelos del Valle del Cauca

    Directory of Open Access Journals (Sweden)

    Torres M. Jorge Ilian

    1989-12-01

    Full Text Available Para estudiar la influencia de diferentes cantidades de Ca, Mg y Na en las aguas de riego sobre las propiedades químicas y físicas de los suelos, se caracterizó el intercambio Ca-Mg en presencia de diferentes saturaciones de Na en la solución de equilibrio en términos de las isotemas de intercambio de 4 suelos pertenecientes a los tres principales ordenes predominantes en el Valle del Cauca. En general hubo ligera preferencia por Ca sobre Mg en los suelos; pero a bajas concentraciones de Mg en la solución el suelo Doronzoro mostró preferencia por Mg y el suelo Crucero una tendencia hacia mayor afinidad por el Mg+2a altos valores de Mg y de la RAS en la solución. Las preferencias de los suelos por Mg parecen estar asociadas en parte con la presencia de carbonatos y materia orgánica. Con excepción del suelo Crucero, las isotermas no mostraron influencia de la RAS o del PSI resultante sobre la selectividad por Ca+2 o Mg+2. Las altas saturaciones de Mg+2 encontradas en muchos suelos del Valle del Cauca se deben a la presencia de altas cantidades de este ión en las aguas de riego en las aguas freáticas y no a preferencia de los suelos por el mismo.To study the influence of different amounts of Ca, Mg and Na in the irrigation water on chemical and physical properties of soils, four soils from the Cauca Valle y were used to characterize their cation distribution and the Ca-Mg exchange in presence of different concentrations of Na in the equilibrium solution. A general preference for Ca over Mg was found; however, the Doronzoro soil isotherms showed that at low ion concentrations of Mg in the solutions there is a preference for Mg2+relative to Ca2+ and Crucero soil showed an increasing affinity to Mg2+as its concentration and SAR increase in the solution. Soil preferences for magnesium seem to be related to the presence of organic matter or to the presence of carbonates. Excluding the Crucero soil the isotherms did not show influence of SAR

  4. Costo operativo de la unidad transfusional del Banco de Sangre del Cauca S.A.

    OpenAIRE

    Pilar Bautista, Gladys Pilar; Guzmán Velasco, Josefa Nayibe; Montero Carvajal, Julieta Betzabet

    2012-01-01

    La medicina transfusional es de una alta responsabilidad terapéutica y debe ser un servicio regulado legalmente según los diferentes niveles, basando su accionar en políticas de calidad, seguridad y oportunidad que garanticen el uso seguro y efectivo de los productos sanguíneos para la efectividad de los procesos. El banco de sangre del cauca S.A. cuenta con todos los requisitos requeridos para la prestación del servicio según el decreto 1571 de 1993, Decreto de 1011 de 2006 y resolución 1...

  5. On Apteronotus magdalenensis (Miles, 1945 (Gymnotiformes: Apteronotidae: a poorly known species endemic to the río Magdalena basin, Colombia

    Directory of Open Access Journals (Sweden)

    Javier A. Maldonado-Ocampo

    2011-01-01

    Full Text Available Based on the examination of the two available paratypes and recently collected material, we present new data and information on the electric knifefish Apteronotus magdalenensis, a species endemic to the río Magdalena-Cauca basin in Colombia. Since Miles' description in 1945, this species was not collected until recent field work at the Torrents of Honda and additional localities. We present data on the external morphology, morphometrics, pigmentation and electric organ discharges (EODs, of A. magdalenensis. We also review its distribution, ecology and conservation status.Basados en la revisión de los dos paratipos disponibles y material recientemente colectado, presentamos nuevos datos e informaciones del pez cuchillo eléctrico Apteronotus magdalenensis, una especie endémica de la cuenca del río Magdalena-Cauca en Colombia. Desde su descripción en 1945 por Miles, esta especie no fue colectada hasta trabajo de campo llevado a cabo recientemente en los rápidos de Honda y localidades adicionales. Presentamos datos sobre la morfología externa, morformetría, pigmentación y descarga del órgano eléctrico (EOD de A. magdalenensis. También revisamos su distribución, ecología y estatus de conservación.

  6. Descripción de los parámetros productivos, reproductivos y de las tecnologías de producción en sistemas intensivos de ganadería bovina en el sur del Valle geográfico del río Cauca

    OpenAIRE

    Sánchez Clara Inés; Domínguez Eva Lorena; Ramírez Náder Luis Miguel

    1995-01-01

    En la zona plana del Sur del Valle del Cauca, Colombia, se estudiaron nueve (9) fincas, clasificadas como sistemas intensivos de producción bovina. Los resultados (medias e intervalos de confianza) fueron: a) Parámetros de producción: UGGI/ha: 2.7 (2.5-2.8); animales/ha; 3.2 (3.0-3.4); Duración de lactancia; días: 320 (292-349); Producción de leche /vaca/día, 1: 8.1 (6.4-9.8); Vacas en producción, %: 74.3 (64.2-84.4); Leche/vaca/año, 1:2850 (2231-3370); Leche vaca/día/hato, 1:5.75 (4...

  7. Comportamiento sexual y erotismo en estudiantes universitarios, Cali, Colombia

    Directory of Open Access Journals (Sweden)

    Lina María García

    2011-09-01

    Full Text Available Objetivo: Identificar los principales componentes de pensamiento y prácticas eróticas de los estudiantes de la Universidaddel Valle, Campus San Fernando.Método: Se realizó un estudio descriptivo, durante los años 2008 y 2009 con 1,120 estudiantes estudiantes de dosfacultades de una universidad pública en el Valle del Cauca, Colombia, para evaluar sus necesidades en salud sexual yreproductiva.Resultados: Se diseñó un sistema informático para el estudio. Fueron 695 (62% mujeres con una edad media de 20 años,con alta proporción de niveles socioeconómicos bajos. La edad media de inicio de relaciones sexuales fue 16 años sindiferencias por nivel educativo; 50% tuvo su primer coito antes de la adolescencia final y 42% ha tenido entre dos y cincoparejas sexuales. Las mujeres disfrutan menos las relaciones sexuales (p=0.022 con mayor proporción de relaciones extraparejaen los hombres (p<0.001.Conclusiones: Los hombres adoptan con mayor frecuencia comportamientos de riesgo en las prácticas eróticas tales comomayor número de parejas sexuales, mayor frecuencia de infidelidad, reportaron mayor placer durante las relaciones sexoeróticas.

  8. Sexual behavior and erotism in university students, Cali, Colombia

    Directory of Open Access Journals (Sweden)

    Liliana Arias

    2011-09-01

    Full Text Available Aim: To identify the main components related to the thoughts and erotic practices of students at Universidad del Valle, San Fernando Campus. Method: A descriptive study was conducted during 2008-2009 to evaluate the students´ necessities on sexual and reproductive health (SRH in two faculties in a public university in Valle del Cauca, Colombia. A total of 1120 students were evaluated. Results: An information technology system was designed for this study. Six hundred and ninety five (62% of the subjects were women with an average age of 20 years, mostly coming from underprivileged economic backgrounds. The average age for the beginning of sexual intercourse was 16 without differences by educational level. Fifty percent had their first intercourse before their final adolescence, 42.3% have had 2 to 5 sexual partners. Women enjoy sex with less frequency than men (p=0.022. Men have higher frequency of sexual intercourse outside of the couple than women (p=0.001. Conclusions: Men adopted risk behaviors in erotic practices such as more sexual couples, high frequency of unfaithfulness. Men report more pleasure in their erotic practices.

  9. Terrorism in Colombia.

    Science.gov (United States)

    Paredes Zapata, Gabriel Darío

    2003-01-01

    Colombia is a poor country that has been plagued by ongoing violence for more than 120 years. During the 1940s, subversive terrorist groups emerged in rural areas of the country when criminal groups came under the influence of Communism, and were later transformed into contemporary groups, such as the Ejercito de Liberacion Nacional (ELN) or National Liberation Army and Fuerzas Armadas Revolucionares de Colombia (FARC) or Revolutionary Armed Forces of Colombia). Paramilitary terrorist groups emerged in response to subversive groups and were later transformed into contemporary groups, such as the Autodefensas Unidas de Colombia (AUC) or United Self-Defense Forces of Colombia. Terrorism has placed an enormous burden on modern Colombia. From 1995 to 2002, 9,435 people were killed by terrorism-related events, of which 5,864 were killed by subversive terrorist activities and 3,571 were killed by paramilitary terrorist activities. In 2002, at least nineteen attacks produced 10 or more casualties, of which 18 were bombings. In 2002, terrorists killed at least 12 mayors, 71 legislators, and internally displaced 300,000 persons from their homes. Since terrorist groups in Colombia are typically supported by drug manufacturing and trafficking, it has been difficult at times to distinguish violence due to terrorism from violence due to illicit drug trafficking. Terrorism has also had a major adverse effect on the economy, with restricted travel, loss of economic resources, and lack of economic investment. In addition to political, military, and commercial targets, terrorists have specifically targeted healthcare infrastructure and personnel. At the national and local levels, much emergency planning and preparedness has taken place for terrorism-related events. The Centro Regulador de Urgencias (CRU) or Emergency Regulation Center in Bogota plays a major role in coordinating local prehospital and hospital emergency response in the capital city and the national level where

  10. Cuantificación del riesgo de incumplimiento en créditos de libre inversión: un ejercicio econométrico para una entidad bancaria del municipio de Popayán, Colombia

    OpenAIRE

    Fabián Enrique Salazar Villano

    2013-01-01

    Este documento aborda el estudio del riesgo de crédito como un objetivo de la regulación bancaria moderna, partiendo de la teoría económica hasta llegar a una aproximación cuantitativa concreta. En este sentido, se plantean 2 modelos econométricos para una institución bancaria representativa en la cartera de libre inversión en el municipio de Popayán, Departamento del Cauca (Colombia), con los cuales se logra demostrar que su cartera de libre inversión es de bajo riesgo, aun bajo ciertas cara...

  11. Efecto de abonos verdes en la agregación y micorrización en el cultivo de maíz (zea mays l.) en un suelo de ladera de Palmira (Colombia)

    OpenAIRE

    Vélez Zabala, Francisco Javier

    2012-01-01

    Los Abonos Verdes (AV) inciden positivamente sobre propiedades físicas, químicas y biológicas del suelo, entre ellas, la expresión de la micorriza arbuscular (MA), componente simbiótico fundamental en el suelo, que incide en la nutrición, sanidad, productividad de los cultivos y conservación del agroecosistema. En un Humic Dystrudepts del municipio de Palmira (Valle del Cauca, Colombia) se sembró Canavalia ensiformis L. y Axonopus scoparius F., los cuales se cosecharon como AV, en época de pr...

  12. Relación entre dos sistemas de sombrío de café y algunas propiedades del suelo en la meseta de popayán, colombia

    OpenAIRE

    Paz, Iván Enrique; Sánchez De Prager, Marina; Sadeghian, Siavosh

    2007-01-01

    En la vereda Figueroa, municipio de Popayán, departamento del Cauca, en ocho fincas ubicadas entre 1.750 y 1.850 m.s.n.m., se estimó la actividad microbiana en la rizósfera de plantas de café variedad Colombia para relacionarla con algunas propiedades del suelo y el sistema de sombrío empleado. Entre 0y10 cm de profundidad y en época de cosecha de grano (junio/05) se tomaron muestras para determinar algunas propiedades físicas, químicas y biológicas del suelo. Adicionalmente, tres muestreos m...

  13. Landscape evolution and origin of Lake Fúquene (Colombia): Tectonics, erosion and sedimentation processes during the Pleistocene

    NARCIS (Netherlands)

    G. Sarmiento; S. Gaviria; H. Hooghiemstra; J.C. Berrio; T. van der Hammen

    2008-01-01

    The Basin of Ubaté-Chichinquirá (5°28′N, 73°45′ W, c. 2580 m altitude) includes the Fúquene Valley and is located in the central part of the Eastern Cordillera of Colombia. Rocks and sediments were folded and faulted during the Miocene, uplifted during the (late) Pliocene, and affected by glaciers d

  14. Estudios en la ecoepidemiología y enfermedad por el virus dengue en el Valle del Cauca 2002-2004

    Directory of Open Access Journals (Sweden)

    Mauricio Barreto Barreto

    2004-03-01

    epidemias de dengue, la primera entre los años 1997-1998 y la segunda entre los años 2001-2002. Se encontró una asociación positiva entre la temperatura máxima registrada y el número de casos reportados.

    Durante un periodo de mayor incidencia (visitas 1-3 y uno de menor incidencia (visitas 4-6 se entrevistaron un total de 3.193 personas y se detectó infección por el virus en el 6.8%. Solamente el 14% de los individuos infectados refirió sintomatología. Se colectó principalmente Aedes aegypti, pero en el municipio de Buenaventura también se encontró Aedes albopictus, recientemente introducido a Colombia. No se encontraron diferencias en los índices de positividad de viviendas para larvas ni adultos entre el período de mayor incidencia y el de menor incidencia. Por el contrario, las TMI entomológicas se encontraron asociadas al aislamiento viral en humanos. Mediante análisis de regresión, se predijo que el incremento de 1 por mil en la TIM, se asoció a un incremento de cerca de 5% en la proporción de individuos infectados en la visita siguiente.

    Los serotipos virales que circularon en humanos fueron principalmente Den-2, Den-1, Den-4 y finalmente Den-3. En mosquitos se detectaron los mismos tipos virales encontrados en humanos con predominio de Den-2 y Den-1. De manera interesante, Aedes albopictus se encontró positivo a Den-2, siendo el primer reporte para Colombia de infección natural de este vector.

    En conclusión, las epidemias por virus dengue ocurren en el Valle del Cauca en un patrón intermitente que se repite cada 3 a 4 años. Las tendencias para los dos últimos años muestran que en los principales focos endémicos de la región, existe una transmisión continua de todos los serotipos del virus con la reemergencia

  15. Wonder Valley

    OpenAIRE

    Hillyard, William

    2013-01-01

    You might have passed through here, maybe. Thought you'd stick to the blue roads, hit the casinos of Vegas by the back way. As you blew through this nowhere corner of the Mojave Desert you might have noticed the rat-trap shacks rotting into the sparse hardscrabble of greasewood scrub. And you'd have thought, "What the hell is this place?" Wonder Valley. Out here, thousands of dilapidated cabins crumble into the desert, each one 12 by 20, an outhouse out back. They sit on a grid of five acre p...

  16. Revisio violacearum colombiae

    OpenAIRE

    2012-01-01

    Con el propósito de presentar un estudio crítico al Tercer Congreso Botánico Suramericano que debía celebrarse en Bogotá en el año de 1953, iniciamos en 1950 una revisión de la familia VIOLACEAE en Colombia. Aunque oportunamente se anunció que este Congreso no se realizaría, continuamos en nuestro empeño considerando que ésta sería una contribución útil al estudio de la Flora de Colombia.

  17. Colombia : Accounting and Auditing

    OpenAIRE

    World Bank

    2003-01-01

    This report is based on the findings of a review of accounting and auditing standards and practices in Colombia. The review exercise focused mainly on the strengths and weaknesses of the institutional framework that supports a corporate financial reporting system in the country. The current legal and regulatory requirements on accounting have led to issuance of conflicting accounting stand...

  18. English Teaching Profile: Colombia.

    Science.gov (United States)

    British Council, London (England). English Language and Literature Div.

    This profile of the English language teaching situation in Colombia discusses the role of English in the educational system and in Colombian society. The status of English as the country's first foreign language is examined. It is noted that because Spanish is sufficient for most needs and because there is a relatively small number of Colombians…

  19. Recruiting Teachers in Colombia

    Science.gov (United States)

    Blair, Robert

    2009-01-01

    In this article, the author talks about a system of special schools in Colombia which introduces students to teaching careers as early as the 8th grade. The Colombian system is based on a simple idea: Every student is a potential teacher. Principals talk about molding "ciudadano-pedagogos"--citizen-educators who view teaching as a way of…

  20. Confirmation of Anopheles (Anopheles calderoni Wilkerson, 1991 (Diptera: Culicidae in Colombia and Ecuador through molecular and morphological correlation with topotypic material

    Directory of Open Access Journals (Sweden)

    Ranulfo González

    2010-12-01

    Full Text Available The morphologically similar taxa Anopheles calderoni, Anopheles punctimacula, Anopheles malefactor and Anopheles guarao are commonly misidentified. Isofamilies collected in Valle de Cauca, Colombia, showed morphological characters most similar to An. calderoni, a species which has never previously been reported in Colombia. Although discontinuity of the postsubcostal pale spots on the costa (C and first radial (R1 wing veins is purportedly diagnostic for An. calderoni, the degree of overlap of the distal postsubcostal spot on C and R1 were variable in Colombian specimens (0.003-0.024. In addition, in 98.2% of larvae, seta 1-X was located off the saddle and seta 3-C had 4-7 branches in 86.7% of specimens examined. Correlation of DNA sequences of the second internal transcribed spacer and mtDNA cytochrome c oxidase subunit I gene (COI barcodes (658 bp of the COI gene generated from Colombian progeny material and wild-caught mosquitoes from Ecuador with those from the Peruvian type series of An. calderoni confirmed new country records. DNA barcodes generated for the closely related taxa, An. malefactor and An. punctimacula are also presented for the first time. Examination of museum specimens at the University of the Valle, Colombia, revealed the presence of An. calderoni in inland localities across Colombia and at elevations up to 1113 m.

  1. Catalogación inicial de las Cochinillas del Valle del Cauca. [Homoptera-Coccoidea

    Directory of Open Access Journals (Sweden)

    Figueroa Potes. Adalberto

    1946-08-01

    Full Text Available El presente trabajo es un intento hacia la catalogación de las especies de cóccidos (cochinillas, palomillas etc. que se encuentran en el Valle del Cauca, sean o no de importancia económica. La presente catalogación no comprende todas las especies de cochinillas de este Departamento, pero sí las más comunes y las que he tenido oportunidad de recolectar personalmente o han recolectado mis colegas y amigos. He anotado los nombres científicos válidos hoy después de la revisión de algunos grupos, hecha esa revisión por taxonomistas renombrados de la época moderna. También algunas sinonimias, la distribución o lugar donde se han recolectado o constatado y la planta hospedadora con su nombre científico y vulgar

  2. Pentachlorophenol reduction in raw Cauca river water through activated carbon adsorption in water purification

    Directory of Open Access Journals (Sweden)

    Camilo Hernán Cruz Vélez

    2010-05-01

    Full Text Available Reducing chemical risk in raw water from the River Cauca (caused by the presence of pentachlorophenol and organic matter (real color, UV254 absorbance was evaluated at bench scale by using three treatment sequences: adsorption with powdered ac-tivated coal (PAC; adsorption – coagulation; and, adsorption – disinfection – coagulation. The results showed that although PAC is appropriate for pentachlorophenol removal, and its use together with the coagulant (aluminium sulphate significantly impro-ved phenolic compound and organic matter removal (promoting enhanced coagulation, the most efficient treatment sequence was adsorption – disinfection - coagulation, achieving minor pentachlorophenol levels than detection (1.56 μg/l and WHO li-mits (9μg/l due to the effect of chloride on PAC.

  3. Programa pre natal dirigido a la gestante indígena del municipio de Caldono - Cauca

    OpenAIRE

    Cabrera Herrera, Claudia Carolina; Patiño Lopeda, Edna Ruth; Casso, Ana Jael

    2013-01-01

    plantear un programa de atención integral a la gestante indígenas del municipio de caldono, cauca de acuerdo a la Normatividad Legal Vigente y teniendo en cuenta sus creencias y costumbres.teniendo en cuenta acuerdos entre IPS, autoridades indígenas y parteras acerca de la atención integral a la embarazada indígena; enseñando lo que es la gestación,su proceso, la serie de cambios: anatómicos, fisiológicos y psicológicos, que no sólo son experimentados por la mujer, sino también, por su parej...

  4. Las Enfermedades del Arroz y su Importancia Económica en el Valle del Cauca

    Directory of Open Access Journals (Sweden)

    Bernal Correa Alberto

    1940-12-01

    Full Text Available El estudio de la presente tesis es el resultado de una serie de experimentaciones y observaciones que he llevado a cabo durante año y medio en la Estación Agrícola Experimental de Palmira y en los cultivos industriales del Valle del Cauca. Parte de este estudio pertenece al programa que he desarrollado desde el departamento de fitopatología de la Estación y parte a conclusiones que he obtenido en algunos trabajos que he efectuado en cultivos industriales. Con este estudio he querido relacionar muy estrechamente la importancia de los sistemas de cultivo del arroz, con la patología económica de esta planta. El cultivo del arroz, desde el punto de vista patológico, es económicamente posible en el Valle del Cauca y si en algunas ocasiones se han presentado serios disturbios de origen patógeno en las plantaciones, se ha debido en gran parte a la ignorancia absoluta que caracteriza a la mayoría de nuestros agricultores en lo que respecta a la sanidad vegetal. Estos disturbios bien pueden considerarse como provocados por los arroceros; unas veces por importación de las enfermedades, especialmente en las semillas, y otras veces por favorecer con sus sistemas culturales la persistencia o mayor intensidad de las afecciones. Quiero contribuir con el presente trabajo a una mejor orientación en los sistemas de cultivo y especialmente demostrar que la sanidad vegetal es tan importante en el éxito de una empresa agrícola, como la sanidad humana en las empresas que dependen del factor obrero. La sanidad vegetal, lo mismo que la sanidad humana, debe comenzar desde el origen del individuo y continuarse de acuerdo con las necesidades que exigen los diferentes estados de su vida. Teniendo en cuenta que siempre es mejor prevenir que curar.

  5. Loodushariduse mammutkongress Colombias / Aarne Tõldsepp

    Index Scriptorium Estoniae

    Tõldsepp, Aarne

    2009-01-01

    Sel suvel toimunud rahvusvahelisest matemaatika- ja loodushariduse kongressist Colombia ajaloolises sadamalinnas Cartagenas, mille peakorraldajaks oli 19 aastat tagasi Valgevenest Colombiasse emigreerunud professor Juri Orlik

  6. Estudio de las interacciones entre un proyecto de desarrollo y la comunidad de monterilla en Caldono (Cauca)

    OpenAIRE

    Ibarra O. Jorge L.; Salazar Martha C.; Otocar Reina José

    1995-01-01

    In this research, a methodology was examined to evaluate development institutions, which transcends the relationship between objectives and results. The interactions between the DERIC projects, established in Monterilla town (Cauca),and the community , were studied, The Theoretical Focus of Human Scale development by Manfred Max Neef and the Communicative Action Theory by Jurgen Habermas were applied together with the methodological orientation of IAP investigation-Action-Participati...

  7. Diverse and common: constitutive elements of the conflict among indigenous, peasant and afrocolombian communities in el cauca department

    OpenAIRE

    Rincón García, John Jairo

    2009-01-01

    The present essay aims at generating an approximation to some of the constitutive elements of the conflict for land and territory in El Cauca department, as well as to the latent and manifest tensions existing between peasant and indigenous communities in connection with the land, the territory, education and health services, exacerbated since the campaign “Liberación de la Madre Tierra” took place. The article intends to contribute to the understanding of the aforementioned phenomenon. This ...

  8. HEALTH PSYCHOLOGY IN COLOMBIA

    OpenAIRE

    LUIS FLÓREZ-ALARCÓN

    2006-01-01

    An historical analysis about the evolution of health psychology in Colombia is made, taking as starting point someinvestigations carried out in the field of the behavioral medicine in the decade of the 70’s, and concluding with thedescription of 25 investigation groups that right now exist in many universities of the country, which carry out researchactivities in psychology and health. It is underlined that the development of this investigation field and practice inpsychology have been bound ...

  9. Colombia : Public Expenditure Review

    OpenAIRE

    World Bank

    2005-01-01

    The thrust of the argument in this report is that, from the fiscal policy perspective, Colombia's long term economic performance will best benefit from: lower public sector debt levels; a lower size of public expenditure; a simpler and (almost) neutral tax structure; a closer linkage between revenue and expenditure responsibilities at different government levels; stronger demand incentives and private sector participation in connection with social expenditures and the related public services...

  10. Caracterización morfológica de mora en los departamentos de Valle del Cauca, Cauca y Nariño, de Colombia Morphologic characterization of blackberry on the departments of Valle, Cauca y Nariño of Colombia

    Directory of Open Access Journals (Sweden)

    Adriana Zamorano M

    2007-06-01

    Full Text Available Se colectaron 36 materiales de mora pertenecientes a las especies Rubus glaucus , R. urticifolius y R. robustus . La caracterización cualitativa separó las 3 especies y generó descriptores que permitieron identificar forma, tipo, margen, ápice y color del envés en las hojas, y presencia de antocianinas y cerosidad en tallos. La caracterización cuantitativa identificó particularidades de importancia comercial (alto peso de fruto, pocas espinas en el tallo y altos grados Brix en los materiales 3 y 31 de la Colección. El análisis multivariado de caracteres cuantitativos de tallo y fruto conformó 5 grupos que variaron en distancia de entrenudos, longitud de peciolulo en rama macho, longitud de pecíolo en rama hembra y macho, ancho de folíolo, peso de fruto, longitud del corazón del fruto y número de drupas.36 materials of blackberry belonging to three species: R. glaucus , R. urticifolius and R. robustus were collected. The qualitative characterization separated the three species and it generated describers that allowed to identify form, type, margin, apex, color of leaf in the leaves, and presence of antocianinas and serosity in steams. The quantitative characterization identified characteristics of commercial importance (high fruit weight, few thorns in the stem and high Brix degrees in the materials 3 and 31 of the Collection. The multivaried analysis of quantitative characters for stem and fruit conformed 5 groups that varied in distance of internodes, length of pedicels in the male branch, length of petioles in female and male branch, wide of leaf, fruit weight, length of the heart of the fruit and number of drupes.

  11. El Rosario: un asentamiento prehispánico en "la sierra de los pijao", municipio de Buga, cordillera Central (Colombia

    Directory of Open Access Journals (Sweden)

    Eduardo Forero Lloreda

    2009-07-01

    In the Colombian Andean Central Range belonging to over the Department of Valle in the origins of Cofre river, at El Rosario (Municipality of Buga, there are certain cultural ar- chaeological characteristics that show the evidence of pre–Hispanic occupation, which occurred close to the moment of the first contact with the Spanish invasion. Historical sources of this contact make reference to the fact that the Central Mountain Range was called “Sierra de los pijaos” or “Sierra alta de los pijaos” and was considered the territorial limit since the foundation chronicles of the city of Buga. This is the same border that was used in those days, when Spanish invaders could not trespass due to the occupation of groups that were against the invasion. There is also information about explorations along the middle river stream Guadalajara –river in the same terri- torial limits; that is, the western branch of the Central Mountain Range. The fact that these establishments are found in the limits of the occupation might mean that the- re are two different patterns. The first one is El Rosario (which shares similarities in style with Chaparral– Tolima and the second one is El Janeiro, which has late charac- teristics of what is known as Cauca Medio and Quimbaya. This document reports the unpublished archaeological explorations for this archaeological Colombian region. Keywords: central mountain range, Sierra de los Pijao, territorial limit, Cauca Valley, late settlements

  12. Therapeutic efficacy test in malaria falciparum in Antioquia, Colombia

    Directory of Open Access Journals (Sweden)

    Álvarez Tania

    2006-02-01

    Full Text Available Abstract Objective Evaluate the frequency of failure of eight treatments for non-complicated malaria caused by Plasmodium falciparum in patients from Turbo (Urabá region, El Bagre and Zaragoza (Bajo Cauca region, applying the 1998 protocol of the World Health Organization (WHO. Monotherapies using chloroquine (CQ, amodiaquine (AQ, mefloquine (MQ and sulphadoxine-pyrimethamine (SP, and combinations using chloroquine-sulphadoxine-pyrimethamine (CQ-SP, amodiaquine-sulphadoxine-pyrimethamine (AQ-SP, mefloquine-sulphadoxine-pyrimethamine (MQ-SP and artesunate-sulphadoxine-pyrimethamine (AS-SP, were examined. Methodology A balanced experimental design with eight groups. Samples were selected based on statistical and epidemiological criteria. Patients were followed for 21 to 28 days, including seven or eight parasitological and clinical evaluations, with an active search for defaulting patients. A non-blinded evaluation of the antimalarial treatment response (early failure, late failure, adequate response was performed. Results Initially, the loss of patients to follow-up was higher than 40%, but the immediate active search for the cases and the monetary help for transportation expenses of patients, reduced the loss to 6%. The treatment failure was: CQ 82%, AQ 30%, MQ 4%, SP 24%, CQ-SP 17%, AQ-SP 2%, MQ-S-P 0%, AS-SP 3%. Conclusion The characteristics of an optimal epidemiological monitoring system of antimalarial treatment response in Colombia are discussed. It is proposed to focus this on early failure detection, by applying a screening test every two to three years, based on a seven to 14-day follow-up. Clinical and parasitological assessment would be carried out by a general physician and a field microscopist from the local hospital, with active measures to search for defaulter patients at follow-up.

  13. Detección, identificación y localización geográfica de Begomovirus que afectan al tomate en Colombia

    Directory of Open Access Journals (Sweden)

    Juan Carlos Vaca-Vaca

    2011-12-01

    Full Text Available Detection, identification and geographical localization of tomato-infecting Begomovirus in Colombia Título corto: Begomovirus que afectan tomate en Colombia ResumenEn la actualidad, los Begomovirus (Familia Geminiviridae se han convertido en la mayor amenaza para los cultivos de interés agrícola ubicados en las zonas tropicales y templadas del planeta. Estos virus son transmitidos por la mosca blanca Bemisia tabaci, la cual en los últimos años en Colombia ha tenido un aumento significativo en sus poblaciones y se ha asociado con la aparición de síntomas virales en cultivos de tomate. Muestras de tomate con síntomas virales típicos fueron recolectadas en las cinco principales zonas productoras de esta solanácea en el país. Los Begomovirus fueron detectados por medio de la técnica de hibridación de ácidos nucleicos tipo Dot blot así como por medio de la reacción en cadena de la polimerasa (PCR en todas las muestras colectadas. Con la excepción de un reporte previo en el Valle del Cauca, este es el primer reporte de Begomovirus afectando cultivos de tomate en los departamentos de Antioquia, Santander, Boyacá y Cundinamarca. Asimismo, es la primera vez que se informa sobre Begomovirus que afectan cultivos de tomate localizados por encima de 1500 msnm en Colombia. Palabras clave: Begomovirus, Bemisia tabaci, tomate, Dot blot, PCR. Abstract The begomoviruses (Family Geminiviridae have recently emerged as  Key words: Begomovirus, Bemisia tabaci, tomato, Dot blot, PCR. samples with typical Begomovirus symptoms were collected in five different departments, comprising the mayor tomato growing areas of the country. Begomovirus were detected by Polymerase Chain Reaction (PCR or Dot Blot Hybridization in all tomato samples collected in whole tomato growing areas of the country. With exception for Valle del Cauca, this is the first report of tomato-infecting Begomovirus in Antioquia, Santander, Boyacá and Cundinamarca departments

  14. DETERMINACIÓN DE LA CALIDAD AMBIENTAL DE LA CIÉNAGA COLOMBIA CAUCASIA ­ ANTIOQUIA ­ COLOMBIA

    Directory of Open Access Journals (Sweden)

    Velásquez R. Jesús Oswaldo

    2008-07-01

    Full Text Available Se realizaron mediciones de 22 parámetros físicos, químicos, biológicos y evaluación de fitoplancton durante cuatro meses en tres estaciones de muestreo para caracterizar La Ciénaga Colombia, como representativa del sistema de humedales del Bajo Cauca Antioqueño, con el ánimo de proponer un método para la detección de la calidad ambiental de este tipo de ecosistemas, que permita fijar pautas para su adecuado manejo. Se analizaron los datos mediante la determinación de índices de estado trófico, contaminación e indicares bióticos, así como análisis estadísticos de componentes principales y análisis de correspondencia canónica. Los valores promedio de los índices de estado trófico evidenciaron la calidad eutrófica del ecosistema, aspecto que coincide con los índices de contaminación especialmente referido a los valores de fósforo total. Los indicadores bióticos mostraron distribución uniforme de fitoplancton, con valores bajos en cuanto a diversidad por la condición de ser humedal eutrófico, se identificaron un total de 69 especies pertenecientes a 31 géneros, 21 familias y 6 divisiones, grupos importantes y representativos en aguas naturales. Se detectó la presencia de un alto porcentaje de macrófitas producto de los sedimentos aportados por el mal uso del suelo en las áreas de influencia.

  15. Energetic Planning in Colombia

    International Nuclear Information System (INIS)

    In the country one of the most dynamic sectors in the last years, it has been the mining - energy sector that has had rates of increase superiors to 5%. The most critical situation corresponds to the sector of hydrocarbons, where the exploration in Colombia has arrived at its lower historical levels as they are those of 22 and 30 perforated wells, and 2148 and 2300 acquired kilometers of seismic 2d, in the years of 1996 and 1997, that which doesn't agree with the National Energy Plan NEP that inclined to perforate 100 exploratory wells per year, for the period 1997 - 2010, with the purpose of maintaining the production of 1.0 mbd starting from the year 2000 and this way to avoid that Colombia loses its self-sufficiency and be importer in the 2004 again. The oil politics in charge of the Ecopetrol, will have to be revised with different approaches if one wants a reactivation, because from 1989, year in that included the escalation clause, not alone it has not been possible to increase the exploration, but rather it has fallen at the mentioned levels. In the electric sector; the Regulation of Energy and Gas Commission - REGC, has been a supremely difficult to put priorities, because measures and immediate and urgent changes are needed. To medium term, Colombia should solve its institutional, normative problems and of infrastructure, to be able to have a true integral planning, that takes us to receive the next millennium with true energy self-sufficiency and a consolidation of the country in the export of coal and petroleum, if they take the necessary measures and avoid the lost of the self-sufficiency in hydrocarbons

  16. Evaluation of hydrological methods to obtain environmental flows in the Tulua River, Colombia

    Energy Technology Data Exchange (ETDEWEB)

    Castro-Herendia, Lina Mabel; Carvajal-Escobar, Yesid [Universidad del Valle (Colombia)

    2008-10-15

    Most rivers in the world have been modified in their structure, form, composition or function, which has caused severe ecological and environmental alterations, such as pollution, a dramatic reduction in flow, and less environmental and recreational services. To reduce the human impact on the hydrological systems, new policies of sustainability are being developed worldwide. The aim is the sustainable and responsible use of water resources. One of them is the development and implementation of techniques to estimate environmental flows (EF) and environmental regimen flow regime (EFR). In this article, some hydrological methods used to determine EF and EFR are explained, and their implementation in the Tulua River (Valle del Cauca-Colombia). Simulation on HEC-RAS of the given flows was performed in order to examine flow and level variability. The result showed that most hydrological methods demand constant flows over time, and are specific for certain places and aquatic species, but some others calculate a variable EFR throughout the year and with some modifications can be used in Colombian Rivers. [Spanish] La mayoria de los rios en el mundo han sido modificados en su estructura, forma, composicion y funcionamiento, lo que ha provocado graves alteraciones ecologicas y ambientales, como contaminacion, disminucion excesiva de caudales, y perdida de los servicios ambientales y recreativos, entre otras. Es por esto que para reducir los impactos generadores por las actividades humanas en las cuencas, se estan desarrollando nuevas politicas en el mundo para el uso sostenible y responsable del recurso hidrico, entre las cuales se tienen el desarrollo y la aplicacion de tecnicas de estimacion de caudales ambientales (QA) o de regimenes de caudal ambiental (RQA). En el presente trabajo se explican algunos de los metodos hidrologicos usados para determinar el QA y el RQA, y se muestra la aplicacion de los mismos rios Tulua (Valle del Cauca, Colombia), y su posterior

  17. Colombia Firm Energy Market

    OpenAIRE

    Peter Cramton; Steven Stoft

    2007-01-01

    A firm energy market for Colombia is presented. Firm energy—the ability to provide energy in a dry period—is the product needed for reliability in Colombia’s hydro-dominated electricity market. The firm energy market coordinates investment in new resources to assure that sufficient firm energy is available in dry periods. Load procures in an annual auction enough firm energy to cover its needs. The firm energy product includes both a financial call option and the physical capability to supply...

  18. Serpientes de colombia

    OpenAIRE

    M. Rodrigo Ángel

    2013-01-01

    En este libro es una guía práctica sobre las serpientes de Colombia en cuanto a su clasificación y tratamiento del envenenamiento causado por sus mordeduras. Contiene los siguientes capítulos: 1. Características generales, 2. Serpiente Colombianas, 3. Aparato venenoso, 4. Clasificación fisiopatología de los efectos del veneno, 5. Mordedura por serpientes venenosas en Antioquía, listas de nombres populares y científicos, la bibliografía. Esta es una introducción a esta práctica guí...

  19. Aging in Colombia

    OpenAIRE

    Santos Pérez, María Lourdes; Valencia Olivero, Nelcy Yoly

    2016-01-01

    A partir de datos procedentes de fuentes estadísticas y de informes oficiales, se propone una aproximación crítica a la vejez en Colombia, específicamente desde el punto de vista de las políticas públicas que se están llevando a cabo o que se hallan en proyecto. Nuestra hipótesis principal es que dichas medidas renuncian a un tratamiento integral de la vejez en términos de necesidades y derechos apostando por un sistema de carácter asistencialista, lo que contribuye a afianzar un imaginario d...

  20. Hydroelectric power in Colombia

    Energy Technology Data Exchange (ETDEWEB)

    Ospina, C.S.

    1987-07-01

    At present 77 per cent of Colombia's power generation is produced from hydro stations, and the priority for the future will be developing more of the country's abundant hydro resources. Reviews the development of the Colombian hydro industry, discussing, for example, the impact of the country's interconnection system on the planning and construction of large schemes during the 1970s. A description is included of Guavio, the country's largest hydro scheme under construction at present, which will have a capacity of 1600 MW.

  1. Prevalence of school desertion during teenage pregnancy from public schools in Valle del Cauca, 2006

    Directory of Open Access Journals (Sweden)

    Iván Osorio

    2011-09-01

    Full Text Available Antecedentes: Partiendo de la institución educativa, se investigó la relación entre embarazo adolescente y deserción escolar y como influía el grado escolar y la edad de la embarazada en su riesgo de deserción. Materiales y métodos: Se aplicó una encuesta voluntaria en 180 instituciones educativas oficiales del departamento del Valle del Cauca, correspondiente a 112,470 estudiantes mujeres, encontrando 605 embarazadas. De estas, a 564 se les realizó una entrevista por un profesional en psicología al inicio del período académico y seguimiento a lo largo del año lectivo, identificando las deserciones escolares en este grupo. Resultados: Del total de las adolescentes escolarizadas embarazadas, 24.6% desertaron de su institución educativa durante el período (8 veces el porcentaje de deserción escolar esperada en mujeres. Al analizar la información se encontró que las escolarizadas embarazadas en edades entre 16 y 18 años desertan significativamente menos (p=0.011

  2. Caracterización de la apicultura en el Valle del Cauca y su futuro desarrollo

    Directory of Open Access Journals (Sweden)

    Satizabal E. M. Cristina

    1986-03-01

    Full Text Available La información para caracterizar los aspectos técnicos, económicos y sociales de la apicultura se obtuvo mediante entrevistas y encuestas (88 productores apícolas, 6 fabricantes de implementos apícolas, una Cooperativa que comercia la miel de abejas en el departamento y un consumidor industrial. Se determinaron las principales características de las explotaciones apícolas. El manejo realizado en los apiarios y el grado de conocimiento de los apicultores se utilizaron para evaluar la asistencia técnica. Se describió el mercadeo de la miel de abejas y se caracterizó la unidad de producción apícola (UPAOne study of characterization (technical, economic and social aspects of the bee-keeping in the Valle del Cauca was carried out. The information was obtained from interview and inquiries (88 to bee-keepers, 6 to rnarkers of beekeeping tools, one to the small species cooperative and to Colombina S. A.. The main characteristics of the beekeeping and the apiaries were determined. The management was made in the apiaries using the bee-keeper’s knowledge in order to evaluate the technical assistence. The unit of beekeping production (UPA was defined pointing out its characteristics. The marketing of honey was also described.

  3. Especie nueva del género Bryconamericus (Teleostei: Characidae del río Fonce, sistema río Magdalena, Colombia A new fish species of the genus Bryconamericus (Teleostei: Characidae from the Fonce river, Magdalena Basin, Colombia

    Directory of Open Access Journals (Sweden)

    César Román-Valencia

    2009-08-01

    Full Text Available Se describe una especie nueva del género Bryconamericus Eigenmann, 1907 de la cuenca río Fonce, sistema río Magdalena, Colombia. La especie se distingue de sus congéneres por el número de radios anteriores de la aleta anal cubiertos por una hilera de escamas (4-11 vs. 11-26, excepto de B. orinocoense Román-Valencia 2003, de la cual se distingue por el mayor número de radios ramificados en la aleta anal 19-26 vs. 16-17 y de escamas en la línea lateral (39-45 vs. 31-32; en machos, por un número reducido de espinas sobre los radios en las aletas (anal 2-10 vs. 9-23, pélvicas 2-9 vs. 8-20, pectorales 2-6 vs. 9-28 y dorsal 3-6 vs. 6-18. Se suministran datos ecológicos del hábitat del nuevo taxon y una clave taxonómica para las especies de la cuenca de los ríos Cauca-Magdalena, Sinú y Ranchería.A new fish species of Bryconamericus Eigenmann 1907 is described from the Fonce river, Magdalena Basin of Colombia. The species can be distinguished from all congeners by the number of anterior anal fin rays covered by a scales row (4-11 vs.11-26, except B. orinocoense Román-Valencia 2003 with 1-6, from which is distinguished by the higher number of branched anal fin rays 19 -26 vs. 16-17 and lateral line scales (39-45 vs.31-32; in males, by the spines number on each fins rays (anal 2-10 vs. 9-23, pelvic 2-9 vs. 8-20, pectorals 2-6 vs.9-28 and dorsal 3-6 vs. 6-18. Ecological data of the aquatic habitat of the new taxon are presented and a key to species of Bryconamericus from Cauca-Magdalena, Sinú and Ranchería rivers in Colombia is provided.

  4. Una Colombia imaginada

    Directory of Open Access Journals (Sweden)

    Miguel A. Ramiro Avilés

    2014-01-01

    Full Text Available José Antonio Osorio Lizarazo, José Félix Fuenmayor y Manuel Francisco Sliger Vergara escribieron, respectivamente, Barranquilla 2132, Una triste aventura de 14 sabios y Viajes interplanetarios en Zepelines que tendrán lugar el año 2009. Se trata de tres novelas de ciencia ficción que fueron publicadas en Colombia en la década de 1930. En estas obras se perfila una Colombia imaginada, muchas veces deseada y, por suerte o desgracia, nunca alcanzada. El objetivo de este texto es presentar las propuestas de reforma política anunciadas por estos tres autores en sus obras de ciencia ficción, centrando la atención en la obra de José Antonio Osorio Lizarazo por ser la más compleja y elaborada de las tres, así como por estar directamente ligada al pensamiento político de Jorge Eliécer Gaitán.

  5. Una Colombia imaginada

    Directory of Open Access Journals (Sweden)

    Miguel A. Ramiro Avilés

    2013-12-01

    Full Text Available José Antonio Osorio Lizarazo, José Félix Fuenmayor y Manuel Francisco Sliger Vergara escribieron, respectivamente, Barranquilla 2132, Una triste aventura de 14 sabios y Viajes interplanetarios en Zepelines que tendrán lugar el año 2009. Se trata de tres novelas de ciencia ficción que fueron publicadas en Colombia en la década de 1930. En estas obras se perfila una Colombia imaginada, muchas veces deseada y, por suerte o desgracia, nunca alcanzada. El objetivo de este texto es presentar las propuestas de reforma política anunciadas por estos tres autores en sus obras de ciencia ficción, centrando la atención en la obra de José Antonio Osorio Lizarazo por ser la más compleja y elaborada de las tres, así como por estar directamente ligada al pensamiento político de Jorge Eliécer Gaitán.

  6. Análisis de viabilidad económica y financiera de una planta de tratamiento de residuos sólidos en el departamento del Cauca

    OpenAIRE

    Melo Mina, Cesar Iván

    2013-01-01

    El trabajo formula la creación de una empresa especializada de servicios de aseo con un enfoque innovador en el tratamiento para el aprovechamiento de residuos sólidos, provenientes de los municipios de la región norte del Cauca, Sur del Valle y el municipio de Popayán capital del departamento del Cauca, mediante la recolección selectiva y el tratamiento para el aprovechamiento de residuos sólidos, se conduce de manera directa a la disminución de impactos ambientales, económicos y sociales ge...

  7. Population Study of the Hawksbill Turtle Eretmochelys imbricata (Cheloniidae in the Southern Pacific region of Colombia

    Directory of Open Access Journals (Sweden)

    Alexander Tobón-López

    2014-06-01

    Full Text Available The objective of this research was to determine biological and ecological population characteristics of the hawksbill turtle (Eretmochelys imbricata found in the southern Colombian Pacific department of Cauca. Morphometric measurements were recorded, the health status of individuals was reviewed, and blood samples were taken for a biochemistry assessment. During the seven months of the investigation, 25 hawksbill turtles were caught (16 different individuals on the reefs of Gorgona Natural National Park. Forty-six percent of the total numbers of turtles assessed were recaptured during the study period. While no obvious health problems were noted, most animals possessed epibionts and filamentous algae covering the carapace, some parts of the limbs, as well as on their neck. Curved carapace length (CCL showed the highest proportion of individuals were between 37 and 45 cm. Sixteen individuals captured in Gorgona Natural National Park were compared with 11 individuals captured in the coastal zone of the department of Cauca. Using the Mann-Whitney U test, a significant difference in CCL was found between these two groups; the animals from Gorgona National Park were larger than those present on the coast of the mainland (Z = -2.59, p = 0.007. Uric acid concentrations were found to be higher than previously referenced values. ESTUDIO POBLACIONAL DE LA TORTUGA CAREY Eretmochelys imbricata (CHELONIIDAE EN EL PACÍFICO SUR DE COLOMBIAEl objetivo de esta investigación fue conocer aspectos poblacionales, biológicos y ecológicos de las tortugas carey (Eretmochelys imbricata presentes en el Pacífico sur de Colombia (Departamento del Cauca, para esto se tomó información de morfometría, se revisó el estado de salud de los individuos y  se tomaron muestras de sangre para valoración de química sanguínea. Durante siete meses de muestreo se capturaron 25 tortugas carey (16 individuos diferentes en los arrecifes del Parque Nacional Natural Gorgona

  8. Gravity Data For Colombia 1997

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The gravity station data (9,050 records), were observed and processed by the Instituto Geografico Agustin Codazzi(IGAC), in Colombia from 1958 to 1996. This data...

  9. Colombia contemporánea

    OpenAIRE

    Sánchez Gómez, Gonzalo; Gómez Albarello, Juan Gabriel; Zuluaga Nieto, Jaime; Fazio Vengoa, Hugo; Ramírez Vargas, Socorro; Tokatlian, Juan Gabriel; Tirado Mejía, Álvaro; Vasco Uribe, Luis Guillermo; Thomas, Florence; Reyes Posada, Alejandro; Cepeda Ulloa, Fernando

    1996-01-01

    Preliminares. Presentación, pág. 1; Introducción, pág.3; Capítulo 1. Conflicto armado y derecho humanitario en Colombia, pág. 11; Capítulo 2. Antecedentes y perspectivas de la política de paz, pág. 47; Capítulo 3. Colombia y América Latina en las relaciones internacionales contemporáneas, pág. 87; Capítulo 4. Colombia, América Latina y el Caribe: Una presencia precaria en el movimiento de países no alineados, pág. 109; Capítulo 5. Colombia, política exterior y no alineamiento: entre la expec...

  10. Modelo auditoría interna programa detección temprana adulto mayor unidad salud, Universidad del Cauca. 2012

    OpenAIRE

    2012-01-01

    Se presenta el estado situacional del programa abordando aspectos administrativos, físicos, personal, recursos económicos, se trazan estandares e indicadores que impactan las diferentes áreas que conforman el programa y se diseña un manual de auditoría interna para el programa de Detección de Alteraciones del Adulto Sano Mayor de 40 años de la Unidad de Salud de la Universidad del Cauca. El informe contiene cuatro capítulos: el primero presenta una análisis situacional del programa de Adulto ...

  11. Entre el oficio y la disciplina. Hacia un balance del quehacer antropológico en el Valle del Cauca

    OpenAIRE

    Carlos Enrique Pérez Orozco

    2009-01-01

    Este artículo presenta las relexiones surgidas de una investigación exploratoria acerca del quehacer de los antropólogos en el Valle del Cauca. Caracteriza dicho quehacer tanto en los oficios que desempeñan, su rol y lugar social, como en su producción disciplinar, en términos de sus aportes a las ciencias sociales. El autor sostiene que las prácticas en espacios interdisciplinares, si bien han sido una ganancia para la comprensión holística de los problemas de la cultura, diluyen las fronter...

  12. Cooperación internacional para el desarrollo en el Valle del Cauca: un estudio de percepciones

    OpenAIRE

    Lady Maritza Otálora Sevilla; Vladimir Rouvinski

    2013-01-01

    Este artículo analiza las percepciones de los actores de la cooperación internacional en el Departamento del Valle del Cauca sobre los procesos de cooperación internacional para el desarrollo. Los autores, luego de analizar las entrevistas en profundidad con distintos actores y documentos relevantes en la cooperación internacional en la región, argumentan que las percepciones de los actores clave inciden fuertemente en los procesos de cooperación, y destacan una diversidad muy amplia en l...

  13. Programa de salud ocupacional de la Escuela de Capacitación de la Gobernación del Cauca

    OpenAIRE

    Potes Satizabal, Carmen Stella; Potes Satuzabal, Mary Luz; Muñoz Chicaiza, Ruth Alba; Zúñiga Muñoz, Manuel Mesías

    2012-01-01

    Este proyecto busca la formulación del Programa de Salud Ocupacional en la Escuela de Capacitación de la Gobernación del Cauca, teniendo en cuenta que no ha sido prioridad en la gestión administrativa el campo de la salud ocupacional. Para la realización del trabajo, se hace el diagnostico de la gestión Administrativa del programa de salud ocupacional y se genera la política de compromiso gerencial, así como la evaluación y el plan de mejoramiento de las condiciones de trabajo que hacen ...

  14. Riesgo Familiar Total y Grado de Salud Familiar, Familias Desplazadas Residentes en el Municipio de Bugalagrande, Valle del Cauca

    OpenAIRE

    Soto González, Ana María

    2014-01-01

    OBJETIVO: determinar el riesgo familiar total y el grado de salud familiar de las familias desplazadas residentes en el municipio de Bugalagrande, Valle del Cauca. MATERIALES Y MÉTODOS: Es un estudio de tipo descriptivo transversal con abordaje cuantitativo, que permite identificar el Riesgo familiar total y grado de salud familiar, la muestra estuvo conformada por 59 familias desplazadas residentes en el área urbana del municipio, de estrato socio-económico 1, 2, 3, que aceptaron de manera v...

  15. FRECUENCIA DE HEMOPARÁSITOS EN BOVINOS DEL BAJO CAUCA Y ALTO SAN JORGE, 2000-2005

    OpenAIRE

    Mariana Herrera; Ángela Soto; Viviana Urrego; Gloria Rivera; Mario Zapata; Leonardo Rios

    2008-01-01

    Objetivo. Determinar la frecuencia de hemoparásitos en los bovinos evaluados por microscopía directa en el laboratorio Lavebac- ASOGAUCA. Materiales y métodos. Se aplicó un modelo epidemiológico cuyo diseño de investigación fue transeccional de tipo descriptivo retrospectivo transversal. Se analizó la totalidad de los datos de los últimos 5 años, proporcionados por el laboratorio Lavebac que presta su servicio a las regiones del Bajo Cauca Antioqueño y Córdoba. Se realizó un análisis de tende...

  16. Colombia : Coffee Sector Study 2002

    OpenAIRE

    World Bank

    2002-01-01

    Colombia is the world's third-largest producer of coffee and by far the largest single producer of washed arabica coffee. This introduction outlines the global situation in brief and sets the context with a synopsis of Colombia's coffee history and its unique coffee culture. Chapters 2 and 3 assess the impact of the current coffee situation in both economic and social terms. Chapters 4 and...

  17. Marine biodiversity in Colombia

    International Nuclear Information System (INIS)

    One decade ago, the seas and oceans were considered biologically less diverse that the terrestrial environment. Now it is known that it is on the contrary; 33 of the 34 categories of animals (phylum), they are represented in the sea, compared with those solely 15 that exist in earth. The investigation about the diversity of life in the sea has been relatively scorned, but there are big benefits that we can wait if this is protected. The captures of fish depend on it; the species captured by the fisheries are sustained of the biodiversity of their trophic chains and habitats. The marine species are probably the biggest reservoir of chemical substances that can be used in pharmaceutical products. The genetic material of some species can be useful in biotechnical applications. The paper treats topics like the current state of the knowledge in marine biodiversity and it is done a diagnostic of the marine biodiversity in Colombia

  18. Pérdidas de suelo y nutrientes bajo diferentes coberturas vegetales en la zona Andina de Colombia

    Directory of Open Access Journals (Sweden)

    J. Alexander Rodríguez

    2009-07-01

    Full Text Available El estudio se realizó en la reserva natural El Ciprés, ubicada en la vereda Bellavista, municipio de El Dovio (Valle del Cauca. La vereda se encuentra en la zona Andina de la cordillera occidental, en el departamento del Valle del Cauca, entre 1700 y 1800 m.s.n.m., con una temperatura promedio de 18 °C. Según la clasificación climática de Holdridge, corresponde a una zona de bosque húmedo Montano Bajo, con una precipitación promedio entre 2500 y 2700 mm/año, una humedad relativa de 90% y una pendiente del suelo de 62%. Las mediciones se hicieron en parcelas de escorrentía de 32 m² cada una y siete tipos de coberturas: guadua (Guadua angustifolia Kunth, bosque secundario, pastura (Brachiaria decumbens, café (Coffea arabica; banco de proteína (Trichanthera gigantea, caña forrajera (Saccharum officinarum y cultivo limpio conformado por yuca (Manihot esculenta, maíz (Zea mays y arracacha (Arracacia zanthorrhiza Brancroft. Para la evaluación se midieron las pérdidas de suelo y los nutrientes calcio, magnesio, potasio y fósforo en un periodo de 7 meses. Los resultados mostraron diferencias (P < 0.05 entre las coberturas evaluadas. Las pérdidas más altas de suelo y nutrientes ocurrieron bajo cultivos limpios (2.61 t/ha y las más bajas en guadua (0.08 t/ha. Estos resultados sugieren ventajas de los bosques de guadua en esta zona de Colombia, ya que además de contribuir a la conservación de los suelos y al mantenimiento de la fertilidad, es una alternativa económica complementaria para los productores rurales a partir de su manejo y aprovechamiento.

  19. Pérdidas de suelo y nutrientes bajo diferentes coberturas vegetales en la zona Andina de Colombia

    Directory of Open Access Journals (Sweden)

    Rodríguez José Alexander

    2009-09-01

    Full Text Available El estudio se realizó en la reserva natural El Ciprés, ubicada en la vereda Bellavista, municipio de El Dovio (Valle del Cauca. La vereda se encuentra en la zona Andina de la cordillera occidental, en el departamento del Valle del Cauca, entre 1700 y 1800 m.s.n.m., con una temperatura promedio de 18 °C. Según la clasificación climática de Holdridge, corresponde a una zona de bosque húmedo Montano Bajo, con una precipitación promedio entre 2500 y 2700 mm/año, una humedad relativa de 90% y una pendiente del suelo de 62%. Las mediciones se hicieron en parcelas de escorrentía de 32 m2 cada una y siete tipos de coberturas: guadua (Guadua angustifolia Kunth, bosque secundario, pastura (Brachiaria decumbens, café (Coffea arabica; banco de proteína (Trichanthera gigantea, caña forrajera (Saccharum officinarum y cultivo limpio conformado por yuca (Manihot esculenta, maíz (Zea mays y arracacha (Arracacia zanthorrhiza Brancroft. Para la evaluación se midieron las pérdidas de suelo y los nutrientes calcio, magnesio, potasio y fósforo en un periodo de 7 meses. Los resultados mostraron diferencias (P < 0.05 entre las coberturas evaluadas. Las pérdidas más altas de suelo y nutrientes ocurrieron bajo cultivos limpios (2.61 t/ha y las más bajas en guadua (0.08 t/ha. Estos resultados sugieren ventajas de los bosques de guadua en esta zona de Colombia, ya que además de contribuir a la conservación de los suelos y al mantenimiento de la fertilidad, es una alternativa económica complementaria para los productores rurales a partir de su manejo y aprovechamiento.

  20. Análisis de crecimiento de canavalia en zona plana del Valle del Cauca

    Directory of Open Access Journals (Sweden)

    Cortés R. Harry

    2005-12-01

    Full Text Available El análisis se realizó en condiciones de campo, en dos localidades (Candelaria y Palmira, determinando los componentes de rendimiento (kg, altura (cm y fenología (dds/floración. Se empleó un diseño completamente al azar con cinco repeticiones. El crecimiento de C. ensiformis no mostró diferencias entre las localidades evaluadas. El desempeño fisiológico en la acumulación de fotosintatos se concentró en mayor proporción en el órgano vertedero “frutoâ€?, que representa entre el 60 y 75% de MS total. La dinámica de acumulación de MS mostró correlación en los índices medidos (TCC, TCR, TAN, IAF. Abstract Analysis of growth of canavalia in the plane zone of Valle del Cauca. Under conditions of field, in two localities (Candelaria and palmira, determining the components of yield (Kg, height (cm and fenology (d/flower. A design at random with five (5 repetitions was used completely. The growth of Canavalia ensiformis does not show differences enters the evaluated localities. The physiological performance in the accumulation of photosintates is it accumulated in greater proportion in the organ garbage dump “fruitâ€?, that represents between 60 and 75% of dry matter. The dynamics of accumulation of MS shows correlation in the measured indices (NAR, LAI, RGR. Key words: Canavalia ensiformis, biological analysis, phenology, yield components.

  1. Valley polarization in bismuth

    Science.gov (United States)

    Fauque, Benoit

    2013-03-01

    The electronic structure of certain crystal lattices can contain multiple degenerate valleys for their charge carriers to occupy. The principal challenge in the development of valleytronics is to lift the valley degeneracy of charge carriers in a controlled way. In bulk semi-metallic bismuth, the Fermi surface includes three cigar-shaped electron valleys lying almost perpendicular to the high symmetry axis known as the trigonal axis. The in-plane mass anisotropy of each valley exceeds 200 as a consequence of Dirac dispersion, which drastically reduces the effective mass along two out of the three orientations. According to our recent study of angle-dependent magnetoresistance in bismuth, a flow of Dirac electrons along the trigonal axis is extremely sensitive to the orientation of in-plane magnetic field. Thus, a rotatable magnetic field can be used as a valley valve to tune the contribution of each valley to the total conductivity. As a consequence of a unique combination of high mobility and extreme mass anisotropy in bismuth, the effect is visible even at room temperature in a magnetic field of 1 T. Thus, a modest magnetic field can be used as a valley valve in bismuth. The results of our recent investigation of angle-dependent magnetoresistance in other semi-metals and doped semiconductors suggest that a rotating magnetic field can behave as a valley valve in a multi-valley system with sizeable mass anisotropy.

  2. Sequencing targeting insurgents and drugs in Colombia

    OpenAIRE

    Farrell, Michelle L.

    2007-01-01

    Colombia President Pastrana President Uribe Drug Trade Coca Counter-narcotics FARC FARC-EP Revolutionary Armed Forces of Colombia Government of Colombia Insurgency Terrorism Plan Colombia Plan Patriota Demilitarized Zone Democratic Defense and Security Policy DSP Peru's success in first defeating the Shining Path guerrilla movement in the early 1990s and then reducing coca cultivation in the mid-1990s demonstrates the effectiveness of a s...

  3. [Litter decomposition and nutrient release in Acacia mangium plantations established on degraded soils of Colombia].

    Science.gov (United States)

    Castellanos-Barliza, Jeiner; León Peláez, Juan Diego

    2011-03-01

    Several factors control the decomposition in terrestrial ecosystems such as humidity, temperature, quality of litter and microbial activity. We investigated the effects of rainfall and soil plowing prior to the establishment of Acacia mangium plantations, using the litterbag technique, during a six month period, in forests plantations in Bajo Cauca region, Colombia. The annual decomposition constants (k) of simple exponential model, oscillated between 1.24 and 1.80, meanwhile k1 y k2 decomposition constants of double exponential model were 0.88-1.81 and 0.58-7.01. At the end of the study, the mean residual dry matter (RDM) was 47% of the initial value for the three sites. We found a slow N, Ca and Mg release pattern from the A. mangium leaf litter, meanwhile, phosphorus (P) showed a dominant immobilization phase, suggesting its low availability in soils. Chemical leaf litter quality parameters (e.g. N and P concentrations, C/N, N/P ratios and phenols content) showed an important influence on decomposition rates. The results of this study indicated that rainfall plays an important role on the decomposition process, but not soil plowing. PMID:21516640

  4. Litterfall and nutrient dynamics in Acacia mangium (Mimosaceae) forest plantations of Antioquia, Colombia

    International Nuclear Information System (INIS)

    Fine litter production, nutrient return, nutrient resorption, and nutrient use efficiency were studied during one year in Acacia mangium forest plantations in mining gold degraded soils at the Bajo Cauca region of Colombia. annual fine litter production was estimated at 10.4 mg ha-1 and it was dominated by the leaf fraction (54%), followed by the reproductive material (24%) and to a lesser proportion by other debris (6%) and other species leaves (1.5%). the highest organic matter and nutrients returns were found on sites classified as high quality. Soil plowing realized previous Acacia mangium planting, did not show any significant effect on organic matter and nutrients returns. A. mangium leaf litter had a high N concentration and consequently, given the high leaf litter production values, it was found a high N return. By the opposite, leaf litter P content and P returns via litter fall were very low. The high values found for p retranslocation and P use efficiency indexes showed that P was the most limiting nutrient for the species. the high values of fine litter production and nutrient return via leaf litter indicate that A. mangium has a great capacity for degraded areas reclamation, as of the restoration of the biogeochemical cycles.

  5. Resistance of Plamodium falciparum to Antimalarial Drugs in Zaragoza (Antioquia, Colombia, 1998

    Directory of Open Access Journals (Sweden)

    Silvia Blair-Trujillo

    2002-04-01

    Full Text Available Plasmodium falciparum sensitivity to chloroquine (CHL, amodiaquine (AMO and sulfadoxine/pyrimethamine (SDX/PYR was assessed in vivo and in vitro in a representative sample from the population of Zaragoza in El Bajo Cauca region (Antioquia-Colombia. There were 94 patients with P. falciparum evaluated. For the in vivo test the patients were followed by clinical examination and microscopy, during 7 days. The in vitro test was performed following the recommendations of the World Health Organization. The in vivo prevalence of resistance to CHL was 67%, to AMO 3% and to SDX/PYR 9%. The in vitro test showed sensitivity to all antimalarials evaluated. Concordance for CHL between the in vivo and in vitro tests was 33%. For AMO and SDX/PYR, the concordance was 100%. We conclude that a high percentage of patients are resistant to CHL (in vivo. A high rate of intestinal parasitism might explain in part, the differences observed between the in vivo and the in vitro results. Therefore, new policies and treatment regimens should be proposed for the treatment of the infection in the region. Nationwide studies assessing the degree of resistance are needed.

  6. Hormigas como plagas potenciales en tres criaderos de mariposas del suroccidente de Colombia

    Directory of Open Access Journals (Sweden)

    María Catalina Sanabria-Blandón

    2009-01-01

    Full Text Available La fauna de hormigas asociada con la zoocría de mariposas en los departamentos de Valle del Cauca y Quindío (Colombia, se colectó por captura manual en tres ambientes (mariposario, vivero y laboratorio. De 125 muestras se extrajeron 779 hormigas, pertenecientes a cinco subfamilias, 18 géneros y 24 especies. El mayor número de especies se registró en el área de laboratorio (17, seguido por vivero (16 y mariposario (13. No se encontraron diferencias significativas (Chi² = 6.019, g.l.= 10, P>0.75, al evaluar la preferencia de las hormigas por un ambiente, sin embargo se observaron tendencias de esta manera: Wasmannia auropunctata (50%, Linepithema sp. (47%, Monomorium floricola (40% fueron las más importantes en el laboratorio, mientras que en el mariposario fueron Linepithema humile (42%, Camponotus novogranadensis (39% y Paratrechina longiconis (37.5% y en el vivero W. auropunctata (37.5% y P. longicornis (37.5%. Algunas de estas hormigas son reconocidas como vagabundas y plagas urbanas, lo que podría considerarse como un riesgo potencial para las actividades de zoocría de mariposas. En el presente estudio se propuso conocer las especies de hormigas que se asocian con tres criaderos de mariposas localizados en el suroccidente colombiano.

  7. A mediated modelling approach to promote collaborative learning in Andean rural micro-catchments in Colombia

    Science.gov (United States)

    Gowing, John; Dominguez, Isabel

    2013-04-01

    In rural catchments of developing countries water-related diseases, due to land use patterns (agriculture and livestock), microbial pollution, inadequate sanitation systems, access to water of poor quality, and lack of institutional support are common problems which disproportionally affect poor and vulnerable people. This research aims at developing a system dynamic model to improve the understanding of the macro and micro factors that influence human health and environmental health in rural micro-catchments in Valle del Cauca, Colombia. In this catchment livelihoods for most people depend on agriculture, particularly coffee. The research uses a mediated modeling approach, in which different stakeholders in modeling sessions, develop a STELLA model that allows them to identify relations between the economic, social and environmental factors and driving forces over the performance of their system. Stakeholders jointly develop the model structure in sessions facilitated by the researcher and the data required is gathered using secondary information from the different relevant institutions and primary information from field surveys that cover socioeconomic and environmental aspects that has not been previously collected by any institution or organization (i.e. household survey, stream water survey, and drinking water survey). Representation and understanding of their system will allow the stakeholders to test the effect of different management strategies in the micro-catchment and their associated socioeconomic, environmental and human health outcomes.

  8. Silicon Valley Ecosystem

    Institute of Scientific and Technical Information of China (English)

    Joseph Leu

    2005-01-01

    @@ It is unlikely that any industrial region of the world has received as much scrutiny and study as Silicon Valley. Despite the recent crash of Internet and telecommunications stocks,Silicon Valley remains the world's engine of growth for numerous high-technology sectors.

  9. Rift Valley Fever Virus

    Science.gov (United States)

    Rift Valley fever virus (RVFV) is a mosquito-transmitted virus or arbovirus that is endemic in sub-Saharan Africa. In the last decade, Rift Valley fever (RVF) outbreaks have resulted in loss of human and animal life, as well as had significant economic impact. The disease in livestock is primarily a...

  10. The Colombia Seismological Network

    Science.gov (United States)

    Blanco Chia, J. F.; Poveda, E.; Pedraza, P.

    2013-05-01

    The latest seismological equipment and data processing instrumentation installed at the Colombia Seismological Network (RSNC) are described. System configuration, network operation, and data management are discussed. The data quality and the new seismological products are analyzed. The main purpose of the network is to monitor local seismicity with a special emphasis on seismic activity surrounding the Colombian Pacific and Caribbean oceans, for early warning in case a Tsunami is produced by an earthquake. The Colombian territory is located at the South America northwestern corner, here three tectonic plates converge: Nazca, Caribbean and the South American. The dynamics of these plates, when resulting in earthquakes, is continuously monitored by the network. In 2012, the RSNC registered in 2012 an average of 67 events per day; from this number, a mean of 36 earthquakes were possible to be located well. In 2010 the network was also able to register an average of 67 events, but it was only possible to locate a mean of 28 earthquakes daily. This difference is due to the expansion of the network. The network is made up of 84 stations equipped with different kind of broadband 40s, 120s seismometers, accelerometers and short period 1s sensors. The signal is transmitted continuously in real-time to the Central Recording Center located at Bogotá, using satellite, telemetry, and Internet. Moreover, there are some other stations which are required to collect the information in situ. Data is recorded and processed digitally using two different systems, EARTHWORM and SEISAN, which are able to process and share the information between them. The RSNC has designed and implemented a web system to share the seismological data. This innovative system uses tools like Java Script, Oracle and programming languages like PHP to allow the users to access the seismicity registered by the network almost in real time as well as to download the waveform and technical details. The coverage

  11. Environmental information in Colombia

    International Nuclear Information System (INIS)

    This article is a chapter from the paper, Elements for the description of an environmental information system, which was written by the author as a requirement for the degree of specialist on environment and Geoinformatics at the school of engineering. Universidad de Antioquia. The original paper attempted a description of the context and development of a particular environmental information system, built at the eastern region of Antioquia by CORNARE (a regional autonomous corporation for the environment and the natural resources). This article refers to the Colombian institutional context for environmental information. With particular emphasis laid on the strategic character that must be conceded to the administration of information. Towards the construction of equitable and sustainable development models under autonomous orientation an efficient and transparent environmental administration as is needed by such models is only attainable through the design and application of environmental information systems committed to the pursuit of collective interests. Here a balance is sought between accomplishments and failures reached during the long standing discussion held in Colombia around the formulation of public policies that acknowledge and strengthen the role of information as a cornerstone of environmental administration, and a contribution towards the goal of human sustainable development

  12. Mantidflies of Colombia (neuroptera, mantispidae).

    Science.gov (United States)

    Ardila-Camacho, Adrian; García, Alexander

    2015-01-01

    This study revises the Mantispidae of Colombia. 151 adult specimens of 12 entomological museums of Colombia were examined and identified. On the basis of the specimens studied and a comprehensive literature search, it is determined that 20 nominal species (including two doubtful records) plus four proposed as new to science, in ten genera (Anchieta, Plega, Trichoscelia, Gerstaeckerella, Buyda, Climaciella, Dicromantispa, Entanoneura, Leptomantispa, and Zeugomantispa) and, three subfamilies (Symphrasinae, Drepanicinae, and Mantispinae) occur in Colombia. In addition, A. eurydella (Westwood), C. amapaensis Penny and P. fasciatella (Westwood) are redescribed, providing complementary information to the original descriptions. A list of Colombian Mantispidae, distribution maps and taxonomic keys to subfamilies, genera and species are included. Illustrations of the external morphology and male genitalia are provided for selected species. The taxonomic status of P. hagenella (Westwood) is discussed, and its diagnostic characters are redefined. Anchieta remipes (Gerstaecker) is newly transferred to this genus from Trichoscelia. PMID:25947479

  13. USO DE HIDROQUÍMICA E ISÓTOPOS AMBIENTALES PARA LA EVALUACIÓN DE LA CONEXIÓN HIDROLÓGICA ENTRE EL AGUA SUBTERRÁNEA Y EL HUMEDAL CIÉNAGA COLOMBIA. (UN PRIMER ACERCAMIENTO

    Directory of Open Access Journals (Sweden)

    SANTA ARANGO DIANA PATRICIA

    2010-05-01

    Full Text Available El entendimiento de las condiciones de flujo de agua desde y hacia un humedal se basa, en principio, en la interpretación de información hidrológica, pero además la incorporación de técnicas no convencionales como lo son la hidroquímica y la hidrología isotópica y permite un mayor nivel de comprensión de los sistemas hidrológicos, en la medida en que es posible identificar el origen, la evolución del agua y los tiempos de tránsito y residencia en los diferentes compartimientos del ciclo hidrológico. El sistema hidrológico Ciénaga Colombia representa un ecosistema estratégico en el Bajo Cauca antioqueño y en pro de su sostenibilidad, se requiere un mejor conocimiento de él. Se presentan aquí los primeros resultados del proyecto “Hydrochemical and Isotopic techniques for the assessment of hydrological processes in the wetlands of Bajo Cauca Antioqueño” que la Universidad de Antioquia adelanta en convenio con el Organismo Internacional de Energía Atómica, OIEA, inspirados en la idea de usar técnicas isotópicas para evaluar procesos hidrológicos en humedales.

  14. Renewable energy potential in Colombia

    Science.gov (United States)

    Correa Guzman, Jose Luis

    2008-12-01

    Renewable energy flows are very large in comparison with humankind's use of energy. In principle, all our energy needs, both now and into the future, can be met by energy from renewable sources. After many years trying to develop the alternative energy potential of Colombia, a major effort is principally being made since 2000 to explore and assess the renewable resources of the entire country. Until 2000, the availability of conventional energy sources in Colombia prevented renewable energy exploration from reaching a higher level. However, the extreme energy crisis of 1992 - 1993 alerted the authorities and the community to the necessity for exploring alternative energy sources. This energy study is a general approach to the current and future renewable energy scenario of Colombia. It was prepared in response to the increased interest around the world and in particular in Colombia to develop its non-fossil energy prospective. It, therefore, represents a working document giving an initial impression of the possible scale of the main renewables sources as a response to the concern about energy security and fossil fuel dependence problems. The assumptions made and calculations reported may therefore be subject to revision as more information becomes available. The aim of this dissertation is not only to improve the public understanding and discussion of renewable energy matters in Colombia but also to stimulate the development and application of renewable energy, wherever they have prospects of economic viability and environmental acceptability. To achieve such goal this paper reviews several renewable technologies, their availability, contribution and feasibility in Colombia.

  15. Sismos y volcanes en Colombia

    OpenAIRE

    Duque Escobar, Gonzalo

    2010-01-01

    Notas sobre las zonas de amenaza sísmica y principales fuentes sísmicas de Colombia, y los segmentos volcánicos de los Andes colombianos con los principales volcanes activos, de conformidad con los estudios del Ingeominas. Anexos a títulos con sus correspondientes enlaces, para ofrecer artículos relacionados con sismos y volcanes, en los que se consideran aspectos de interés para la gestión del riesgo sísmico y volcánico en Colombia

  16. La cuestión Cerruti y la crisis diplomática entre Colombia e Italia (1885-1911

    Directory of Open Access Journals (Sweden)

    Tamburini, Francesco

    2000-12-01

    Full Text Available In february 1885, during the civil war between the conservative and the upleaved liberal party in the Colombian federated state of Cauca, the real estates and properties of the Italian subject Ernesto Cerruti were destroyed and impounded, under the charge of cooperation with the insurgent liberal forces. The measures taken by the Caucan authorities and the subsequent demand for compensation by Cerruti were the cause of the 26 years longlasting diplomatic clash between Colombia and Italy, which led to the intervention of Spain and USA as arbitrators as well as to a myriad of official publications, civil lawsuits at Italian courts and warships sent to Colombian harbours in order to uphold the claims of Italy. No doubt the "Cerruti case" was one of the most complicated of international cases Italian diplomacy ever had to face, in which the Italian government also had to confront the rising North American imperialism.

    En febrero de 1885, el Estado federal colombiano del Cauca, durante la guerra civil entre el insurgido partido liberal y el conservador, las propiedades del ciudadano italiano Ernesto Cerruti fueron destruidas y secuestradas con la acusación de cooperación con las fuerzas liberales. Las medidas de las autoridades caucanas y la consiguiente reclamación de Cerruti por la indemnización fueron la causa de los veintiseis años de crisis diplomática entre Colombia e Italia que llevó a la intervención de España y Estados Unidos como mediadores, la publicación de miriades de documentos oficiales, juicios en los tribunales italianos y envíos de cruceros en los puertos colombianos. Sin suda alguna el «caso Cerruti» fue uno de los casos de derecho internacional privado más complicados con que Italia tuvo que gestear llevando el gobierno italiano también a enfrentarse con el emergente imperialismo norteamericano.

  17. Serpientes de Colombia

    Directory of Open Access Journals (Sweden)

    M. Rodrigo Ángel

    1983-06-01

    Full Text Available En este libro es una guía práctica sobre las serpientes de Colombia en cuanto a su clasificación y tratamiento del envenenamiento causado por sus mordeduras. Contiene los siguientes capítulos: 1. Características generales, 2. Serpiente Colombianas, 3. Aparato venenoso, 4. Clasificación fisiopatología de los efectos del veneno, 5. Mordedura por serpientes venenosas en Antioquía, listas de nombres populares y científicos, la bibliografía. Esta es una introducción a esta práctica guía sobre las serpientes Colombianas: Desde el origen del hombre, a través de la evolución de las distintas culturas y aún en la época actual en un amplio sector sociocultural, la serpiente ha sido considerada como un animal dotado de ciertos poderes sobrenaturales, bien sea como fuente de mal, de beneficio, de poder, de sabiduría o de salud. Considerada por su aspecto tóxico, la influencia en la patología humana es evidente y de gran importancia como causa de morbilidad sobre todo en aquellos países donde se le considera animal sagrado. En el aspecto simbólico, el folklor es abundante en creencias y tradiciones, que generalmente coinciden en la mayoría de los pueblos. En un país tropical como Colombia, con diversidad de climas y bosques, las serpientes venenosas de gran poder tóxico son también abundantes y significan un peligro real para nuestra población campesina en lucha abierta con la naturaleza. Los envenenamientos causados por sus mordeduras, graves de por sí, empeoran frecuentemente debido a diversos factores tales como la escasez y alto costo del suero antiofídico y la demora en la atención médica, condicionada esta última no sólo por la deficiencias de nuestras vías de comunicación, sino por la influencia nefasta del curandero. Sobre tema tan importante de nuestra patología, es entonces necesario que nuestras instituciones educativas y las encargadas de velar por la salud, se preocupen no sólo por su

  18. Two new trans-Andean species of Imparfinis Eigenmann & Norris, 1900 (Siluriformes: Heptapteridae from Colombia

    Directory of Open Access Journals (Sweden)

    Armando Ortega-Lara

    2011-01-01

    Full Text Available Two new species of Imparfinis are described from the trans-Andean region of Colombia. Imparfinis timana is diagnosed by having longer anal fin base (12.4-15.5% in SL, in combination with long adipose fin (24.6-31.3% in SL, 5-6 gill rakers on the first ceratobranchial, 42-43 vertebrae and additional measurements. Imparfinis usmai is distinguished by the combination of first ray of dorsal fin longest, but not projected as a long filament, long adipose fin (21.1-27.0% in SL, maxillary barbel exceeding pelvic-fin base, 39-40 vertebrae, upper caudal-fin lobe pointed and longer than lower lobe, lower lobe rounded, 7-8 gill rakers on the first ceratobranchial, as well as additional measurements. Imparfinis timana is only known from río Guarapas, a small tributary of the upper course of the río Magdalena. Imparfinis usmai is broadly distributed in the upper basin of ríos Cauca and Magdalena, and in the lower Patía river basin. The restricted distribution of I. nemacheir to trans-Andean drainages (Atrato, Magdalena, and Lago de Maracaibo is also discussed.Duas novas espécies do gênero Imparfinis são descritas da região transandina da Colômbia. Imparfinis timana é diagnosticada por possuir as nadadeiras adiposa e anal compridas (24,6-31,3% e 12,4-15,5% no CP, respectivamente, 5-6 rastros branquiais no primeiro ceratobranquial, 42-43 vértebras, além de outros caracteres de morfometria. Imparfinis usmai é diferenciada pela combinação do primeiro raio da nadadeira dorsal longo, mas não projetado como um filamento comprido, nadadeira adiposa longa (21,1-27,0% na CP, barbilhões maxilares ultrapassando a base da nadadeira ventral, 39-40 vértebras, lóbulo superior da nadadeira caudal pontiagudo e mais longo que o lóbulo inferior, lóbulo inferior arredondado, 7-8 rastros branquiais no primeiro ceratobranquial e outros caracteres de morfometria. Imparfinis timana é conhecida somente para o rio Guarapas, pequeno tributário da bacia do alto

  19. Miocene characid fishes from Colombia: evolutionary stasis and extirpation.

    Science.gov (United States)

    Lundberg, J G; Machado-Allison, A; Kay, R F

    1986-10-10

    Fossil fishes from the Miocene La Venta fauna of the Magdalena River Valley, Colombia, are identified as Colossoma macropomum (Characidae), a living species from the Orinoco and Amazon basins. The fossils document a long and conservative history for a species that is highly specialized for feeding on streamside plants. The phylogenetically advanced position of Colossoma in the subfamily Serrasalminae implies that six related genera and other higher characid taxa originated well before 15 million years ago. This discovery also corroborates neontological evidence for a vicariance event that contributed species from Miocene Orinoco-Amazon faunas to the original Magdalena region fauna. The fossils suggest a formerly diverse Magdalena fauna that has suffered local extinction, perhaps associated with late Cenozoic tectonism. This new evidence may help explain the depauperate nature of the modern Magdalena River. PMID:17746480

  20. Colombia extends its exploration horizon

    International Nuclear Information System (INIS)

    The Return 1 Contract, currently being awarded under the tender system, faithfully reflects Colombia's new approach to hydrocarbon exploration and exploitation. This policy aims to increase reserves and has Ecopetrol assume a more aggressive role in its direct activities by sharing the exploration risks with private partners

  1. Astroparticle Physics at Eastern Colombia

    CERN Document Server

    Asorey, Hernan

    2015-01-01

    We present the emerging panorama of Astroparticle Physics at Eastern Colombia, and describe several ongoing projects, most of them related to the Latin American Giant Observatory (LAGO) Project. This research work is carried out at the Grupo de Investigaciones en Relatividad y Gravitaci\\'on of Universidad Industrial de Santander.

  2. Blitzen Valley Management Plan

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — The 64,000 acre Blitzen Valley unit of Malheur National Wildlife Refuge is not producing enough wildlife to meet the refuge's migratory bird objectives. The area...

  3. Geometry of Valley Growth

    CERN Document Server

    Petroff, Alexander P; Abrams, Daniel M; Lobkovsky, Alexander E; Kudrolli, Arshad; Rothman, Daniel H

    2011-01-01

    Although amphitheater-shaped valley heads can be cut by groundwater flows emerging from springs, recent geological evidence suggests that other processes may also produce similar features, thus confounding the interpretations of such valley heads on Earth and Mars. To better understand the origin of this topographic form we combine field observations, laboratory experiments, analysis of a high-resolution topographic map, and mathematical theory to quantitatively characterize a class of physical phenomena that produce amphitheater-shaped heads. The resulting geometric growth equation accurately predicts the shape of decimeter-wide channels in laboratory experiments, 100-meter wide valleys in Florida and Idaho, and kilometer wide valleys on Mars. We find that whenever the processes shaping a landscape favor the growth of sharply protruding features, channels develop amphitheater-shaped heads with an aspect ratio of pi.

  4. Unapal-Llanogrande, nuevo cultivar de zapallo adaptado a las condiciones del valle geográfico del río Cauca, Colombia

    Directory of Open Access Journals (Sweden)

    Edgar Iván Estrada Salazar

    2010-04-01

    Full Text Available El nuevo cultivar de zapallo (Cucurbita moschata Unapal-Llanogrande se originó a partir de la población básica P-34 obtenida en la segunda colección colombiana de germoplasma realizada por Montes (2003. La población heterogénea (P-34 fue sometida a tres ciclos de selección recurrente fenotípica para los caracteres: producción por planta, prolificidad, tamaño de fruto pequeño (2 - 3 kg, calidad de fruto y sanidad de la planta. El cultivar expresa alta uniformidad y estabilidad fenotípica para hábito de crecimiento postrado con moderado número de guías, tallo cilíndrico angular y pubescente, hojas lobuladas reniformes pequeñas, con alta frecuencia de manchas plateadas, floración monoica, inicio de floración estaminada y pistilada entre 60-70 días después de la emergencia, inicio de cosecha de 130 a140 días, con plantas de alta prolificidad (9 a 11 frutos y alto rendimiento (entre 10 y 20 kg/planta. El fruto es redondo con superficie lisa, sin costillar, de color verde brillante y manchas amarillas o rojizas en la madurez, el peso varía entre 1.5 y 3.0 kg, el diámetro de pulpa entre 3.8 y 4.8 cm y el de cavidad placentaria entre 9 y 12 cm. El color de pulpa es amarillo intenso.

  5. Consumption of agro-industrial supplies by the baker subsector of Palmira, Valle, Colombia. Consumo de insumos agroindustriales por el subsector panificador de Palmira, Valle del Cauca.

    Directory of Open Access Journals (Sweden)

    Adarme J Wilson

    2007-06-01

    Full Text Available The indicators of agroindustrial consumption in the bakers subsector Pymes play a primary role for designing sustainable strategies for the small craftsman of bread. The administrative, operative and human talent subsystems were evaluated, in 30 of 178 organizations that conformed the bakers subsystems of Palmira on 2005. The estimated annual consumption of wheat flour on 2004 was 2016 t; 348 t of sugar; 240 t of cheese; 54 t of salt; 492 t of margarine; 99 t of yeast; 151200 panels of eggs. With regarding to raw materials it consumes 384000 m3 of natural gas; 1.2 million kw of electric power and 156000 m3 of water. The sector generates 681 direct employments. Map is presented with the location of 86% of the bakeries registered in the Trade Chamber. There is not a unique bakery that had implemented a program of Good Manufacture Practices BPM in an integral way, that meets the National Institute of Medications and Foods Surveillance INVIMA Standars, that has of a system of Hazard Analysis and Critical Control Point (HACCP or have been is to be certified with Quality Assuring Standars (ISO 9000, and/or Environmental Administration (ISO 14000, with occupational health programs (OHSAS 18000 and permanent improvement programs relative to administrative and commercial aspects.Los indicadores de consumo agroindustrial en las Pymes del subsector panificador resultan apremiantes para el diseño de estrategias de sostenibilidad para los pequeños artesanos del pan. Se evaluaron los subsistemas administrativos, talento humano y operativo en 30 de las 178 organizaciones que conformaron el subsistema panificador de Palmira en el 2005. El consumo estimado anual para el 2004 de harina de trigo fue 2.016 t; 348 t de azúcar; 240 t de queso; 54 t de sal; 492 t de margarina; 99 t de levadura; 151.200 paneles de huevos. En materias primas auxiliares consume 384.000 m3 de gas natural; 1.2 millones de kw de energía eléctrica y 156.000 m3 de agua. El sector genera 681 empleos directos. Se presenta mapa con la ubicación del 86% de las panaderías registradas en la Cámara de Comercio. No existe una sola panadería que en forma integral haya implementado un programa de Buenas Prácticas de Manufactura-BPM, que cumpla con las normas del (INVIMA, que disponga de un sistema de Análisis de Peligros y Puntos Críticos de Control (HACCP, que esté certificada con normas sobre aseguramiento de calidad (ISO 9000, y/o Gestión Ambiental (ISO 14000, con programas de salud ocupacional (OHSAS 18000 y programas de mejora permanente en aspectos administrativos y comerciales.

  6. Consumption of agro-industrial supplies by the baker subsector of Palmira, Valle, Colombia. Consumo de insumos agroindustriales por el subsector panificador de Palmira, Valle del Cauca.

    OpenAIRE

    Adarme J Wilson; Álvarez P. Camilo

    2007-01-01

    The indicators of agroindustrial consumption in the bakers subsector Pymes play a primary role for designing sustainable strategies for the small craftsman of bread. The administrative, operative and human talent subsystems were evaluated, in 30 of 178 organizations that conformed the bakers subsystems of Palmira on 2005. The estimated annual consumption of wheat flour on 2004 was 2016 t; 348 t of sugar; 240 t of cheese; 54 t of salt; 492 t of margarine; 99 t of yeast; 151200 panels of eggs. ...

  7. Biología floral y polinización artificial del guanábano Annona muricata L. en condiciones del Valle del Cauca, Colombia

    Directory of Open Access Journals (Sweden)

    Escobar T. William

    1986-03-01

    Full Text Available Aunque la flor es hermafrodita presenta protoginia y existe un período de 36 a 48 horas durante el cual pueden encontrarse maduros ambos órganos sexuales, la disposición apretada del cuerpo de estambres, aún estando dehiscentes, no permite disponibilidad de polen. Los insectos asociados con las flores no tienen influencia en el proceso de polinización. Se presume que los frutos se forman a partir de autopolinización (autogamia que ocurre al retener los estambres desprendidos algunos pétalos interiores. En razón a que esta forma es esporádica ya que el tiempo desde la polinización de los estigmas hasta su desprendimiento en muchos casos puede no ser suficiente para que ocurra la fecundación, se presenta bajo prendimiento o cuajamiento de las flores. La polinización manual de las flores aumenta la producción. El tamaño y la velocidad del crecimiento de los frutos están en relación directa con el número de pistilos fecundados.A field study was conducted on floral biology and artificial pollination in soursop (Annona muricata L.. Although flowers are apparently adapted to cross pollination despite being anatomically hermaphrodite, the bunched arrangement of stamens does not results in available fertil pollen. There is a period from 36 to 48 hours in which both sexual organs are simultaneusly, however guanabana flowers functions as physiologically protogineous. None insect genera has any influency on poIlination. It is assumed that generally fruits are formed by autogamy after stigmas get in contact with stamens retained by lower petals. Because this way of pollination is rather sporadic and sometimes stigmas shed after pollination but before fertilization, only a low number of fruit setting is observed as many flowers fall out due to the low number that get fertilized. Manual poIlination resulted in an effective way to increase production. The size and growth rate of these fruits are correlated with the number of pistiIs get fertilized.

  8. ESTUDIO DE TENDENCIAS DE LA PRECIPITACIÓN MENSUAL EN LA CUENCA ALTA-MEDIA DEL RÍO CAUCA, COLOMBIA.

    OpenAIRE

    OLGA L. PUERTAS OROZCO; YESID CARVAJAL ESCOBAR; MAURICIO QUINTERO ANGEL

    2011-01-01

    Estudiar las alteraciones en la oferta hídrica asociadas a la variabilidad o al cambio climático, es importante para ajustar adaptaciones frente a los cambios actuales y futuros, para esto se requiere comprender cambios históricos espacio-temporales en el patrón regional de lluvias. Para esto, se analizaron las tendencias de la precipitación mensual (1975-2006) en escalas de la lluvia total-anual, mensual-multianual y semianual-trimestral; mediante la aplicación de la prueba no-paramétrica de...

  9. Recognition of potential beneficial fungi associated with chontaduro (bactris gasipaes h.b.k.) rhizosphere in the pacific region of valle del cauca, colombia

    OpenAIRE

    Riascos Ortiz, Donald; Sarria-Villa, Greicy A.; Varon de Agudelo, Francia; Gomez Carabalí, Arnulfo; Mosquera Espinosa, Ana Teresa

    2012-01-01

    El chontaduro o pejibaye (Bactris gasipaes H.B.K) es el principal cultivo de los agroecosistemas de la selva húmeda tropical de la costa pacífica colombiana. Esta región no aparece referenciada en la literatura científica a pesar de su alta biodiversidad e importancia agroecológica. El objetivo de este estudio fue aislar y caracterizar morfológicamente hasta género, hongos presentes en la rizósfera de B. gasipaes en dos sistemas de producción diferentes, localizados en Citronela y Sabaletas, ...

  10. Indicador global adelantado de corto y largo plazo para la economía del Cauca 1960-2014

    Directory of Open Access Journals (Sweden)

    Andrés Mauricio Gómez Sánchez

    2016-07-01

    Full Text Available Este documento propone la construcción de un indicador líder o adelantado para la economía del departamento del Cauca, a través de tres metodologías alternativas, distantes de las tradicionalmente basadas en la metodología National Bureau of Economic Research (NBER. Para lograrlo, se utilizan tres indicadores de corto y largo plazo, bajo el método de descomposición lineal del ciclo, otro indicador global sintético basado en la metodología de los componentes principales y finalmente otro que utiliza el algoritmo del filtro de Kalman. Los resultados muestran, entre otros aspectos, que el indicador en el escenario Kalman supera en robustez estadística a los otros dos indicadores y augura un crecimiento económico positivo para esta región en los años venideros.

  11. Modelamiento ecohidrológico de la humedad del suelo en el valle del Río Cauca

    OpenAIRE

    Hernández Torres, Guillermo

    2010-01-01

    El presente trabajo de investigación implementa un modelo ecohidrológico a la zona del valle geográfico del Río Cauca en el cual se evalúa un modelo estocástico de balance hídrico puntual en función del contenido de humedad del suelo. Al modelo de balance se acopla un modelo matemático que evalúa el grado de estrés hídrico aplicado al cultivo de la caña de azúcar. El marco conceptual corresponde al estudio del impacto del ciclo hidrológico en la dinámica del contenido de agua en el suelo ...

  12. Patrimonio fotográfico del Valle del Cauca: el archivo de Otto Moll González

    Directory of Open Access Journals (Sweden)

    Olga Cecilia Eusse González

    2014-02-01

    Full Text Available El Departamento Red de Bibliotecas, a través del Área Cultural de Cali, adquirió en 2009 el archivo fotográfico de Otto Moll González (Cúcuta, 1904-Cali, 1988. Este archivo, conformado por alrededor de 30.000 documentos entre negativos blanco y negro (en película y vidrio y fotografías blanco y negro en papel de diferentes formatos, constituye una de las colecciones de imágenes más valiosas que tiene el Valle del Cauca para los decenios de 1950 a 1980 y es un aporte importante a las colecciones documentales de la Red de Bibliotecas sobre el suroccidente y otras regiones del país.

  13. Una mirada a la situación de la niñez en el Valle del Cauca

    Directory of Open Access Journals (Sweden)

    Ana María Osorio

    2010-10-01

    Full Text Available En este documento identificamos un conjunto de indicadores a nivel departamental y municipal (en la medida en que la información lo permite con perspectiva de niñez, indicadores que facilitan analizar el bienestar y cumplimiento de los derechos de los niños y niñas en distintas áreas: salud, educación, alimentación, vivienda digna, y la exposición a riesgos tempranos como el trabajo y la maternidad. La construcción de indicadores a nivel municipal que reflejan el bienestar y/o el cumplimiento de los derechos, ofrece una oportunidad para obtener una imagen completa de la situación de la niñez en un departamento, y constituye una herramienta sumamente importante en el diseño de la política pública y la focalización del gasto. Los indicadores del Valle del Cauca aquí presentados reflejan inequidades geográficas en la provisión y acceso de servicios sociales básicos; en ellos se evidencian grandes brechas entre municipios frente al promedio departamental y la ciudad de Cali. Los mayores rezagos se concentran en algunos municipios del norte del Valle y el municipio de Buenaventura. Todo esto plantea importantes retos de política pública, e invitan al debate, al análisis y a la visualización de las condiciones de vida de la niñez en el Valle del Cauca.

  14. Receiver functions and crustal structure of the northwestern Andean region, Colombia

    Science.gov (United States)

    Poveda, Esteban; Monsalve, Gaspar; Vargas, Carlos Alberto

    2015-04-01

    We used the receiver function technique to deduce crustal thickness beneath the northwestern Andean system, using data from the permanent seismic network of Colombia, combined with some of the IRIS and CTBTO stations in Colombia and Ecuador. The estimation of crustal thickness was made using the primary P to s conversion and crustal reverberations. The bulk crustal VP/VS ratio was constrained using a crustal thickness versus VP/VS stacking method, in addition to estimations using a time to depth conversion technique based on results of a modified Wadati diagram analysis. We observed a wide range of crustal thicknesses, including values around 17 km beneath the Malpelo Island on the Pacific Ocean, 20 to 30 km at the coastal Pacific and Caribbean plains of Colombia, 25 to 40 km beneath the eastern plains and foothills, 35 km beneath the Western Cordillera, 45 km at the Magdalena River intermountain valley, 52 to 58 km under the northern Central Cordillera, and reaching almost 60 km beneath some of the volcanoes of the Southern Cordilleran system of Colombia; crustal thickness can be slightly greater than 60 km beneath the plateau of the Eastern Cordillera. The values of VP/VS are particularly high for some of the stations on the volcanic centers, reaching values above 1.79, probably related to the addition of mafic materials to the lower crust, and in the plateau of the Eastern Cordillera near Bogota, where we speculate about the possibility of crustal seismic anisotropy associated with shear zones.

  15. Geochemistry, processes and environmental impact caused by the mining and auriferous ore process in the Marmato District (Caldas Department, Colombia)

    International Nuclear Information System (INIS)

    Colombia is the third gold producer in Latin America, Mining and processing of gold ore bodies are backward and it is well known that produce great deal of effects on the environment. This study puts emphasis on heavy metals (Cu, Pb, Zn, Cd, Ag, As, Hg, Sb. Bi) released from mining, processing and tailings of gold-sulfide ore bodies from the Marmato Area, and the main objective is research about the geochemical behavior of such heavy metals (sources, dispersion, accumulation, chemical speciation, deposition and accumulation rates) taking surface waters, sediments and suspended particulate matter as geochemical sampling media. In order to asses the fate of these heavy metals, was planned a sampling programmed (summer and winter seasons) of surface waters. Sediments and suspended particulate matter, in streams (Aguas Claras. CascabeI, Pantanos. Marmato, Arquia, Chirapoto), two mine drainages and two processing effluents from the Marmato gold District (vein type), and in the Cauca River (Marmato Area). Analytical work in surface waters was carried out in the field, (physical-chemical parameters: temperature, pH, conductivity, turbidity, sulfides and flow) and in specialized analytical laboratories of Colombia (cyanides, COD - Chemical Oxygen Demand, TOC - Total Organic Carbon, TS - Total Solids. DS - Dissolved solids, NH3, chlorides. Dissolved heavy metals - Cu, Pb, Zn, Cd, Ag, As, Hg, Sb. Bi). In sediments and suspended particulate matter is carrying out a gross geochemical speciation (non-detrital or geochemically reactive fraction and residual or inactive fraction) by leaching with HCl 0.5N and total contents analysis (acidic digestion -HF/ Perchloric acid) in specialized Laboratories of Colombia and Canada. Preliminary results of summer season sampling, showed that surface waters flowing from the Marmato Area are not appropriated neither as domestic supply, agriculture irrigation, aquatic life or industrial use (Cyanides (0.13 -3.8 mg/L), TS (9422-39952 mg/L. The

  16. Republic of Colombia. Country Profile.

    Science.gov (United States)

    Canak, W L

    1985-03-01

    This discussion of Colombia covers population growth, age distribution, regions and cities, households and families, housing and construction, ethnicity and religion, labor force and income, education, communications and transportation, and sources of information. Colombia's 1985 population is estimated at 28.7 million, making it the largest country in South America after Brazil. Colombia's growth in the last 5 years has averaged 2% annually, compared with an average of 2.3% a year for Latin America as a region. Colombia's moderate growth has been accompanied by shifts in population distribution and composition. In particular a massive internal migration has increased the urban population from roughly 1/3 in th 1950s to 2/3 at this time. Improved housing, education, and access to public health facilities have accompanied this rural to urban migration. At this time Colombia is holding its own economically and anticipates economic growth based on recovery in the US and Europe as well as on its own coal exports. Colombia's fertility rate, at 3.9 children/women in 1980-81, is the lowest in tropical South America but higher than the total fertility rate in the more temperate South American countries. Compared with other South American nations, Colombia's crude birthrate of 29-31 births/1000 population is low. Reflecting the impact of urban migration and the widescale effectiveness of family planning programs initiated in the 1960s and 1970s, median age has increased from 17 years in 1970 to almost 21 years in 1985. About 37% of the population is aged 14 or under at this time. The population aged 65 and older is only 3.8% and by 2000 will constitute only 4.5% of the population. From 1951-82 the urban population grew at 4.4% annually, exceeding the national average of 2.6% and the rural growth rate of less than 1%. Since 1982 the urban growth rate has been about 3% annually. In 1964 the average completed family size was 6.8 children. By 1980 it was 3.9 children. A steady

  17. Pérdidas de suelo y nutrientes bajo diferentes coberturas vegetales en la zona Andina de Colombia Soil and nutrient loss under different vegetation covers in Colombia's Andean region

    Directory of Open Access Journals (Sweden)

    J. Alexander Rodríguez

    2009-07-01

    Full Text Available El estudio se realizó en la reserva natural El Ciprés, ubicada en la vereda Bellavista, municipio de El Dovio (Valle del Cauca. La vereda se encuentra en la zona Andina de la cordillera occidental, en el departamento del Valle del Cauca, entre 1700 y 1800 m.s.n.m., con una temperatura promedio de 18 °C. Según la clasificación climática de Holdridge, corresponde a una zona de bosque húmedo Montano Bajo, con una precipitación promedio entre 2500 y 2700 mm/año, una humedad relativa de 90% y una pendiente del suelo de 62%. Las mediciones se hicieron en parcelas de escorrentía de 32 m² cada una y siete tipos de coberturas: guadua (Guadua angustifolia Kunth, bosque secundario, pastura (Brachiaria decumbens, café (Coffea arabica; banco de proteína (Trichanthera gigantea, caña forrajera (Saccharum officinarum y cultivo limpio conformado por yuca (Manihot esculenta, maíz (Zea mays y arracacha (Arracacia zanthorrhiza Brancroft. Para la evaluación se midieron las pérdidas de suelo y los nutrientes calcio, magnesio, potasio y fósforo en un periodo de 7 meses. Los resultados mostraron diferencias (P Soil and nutrient (calcium, magnesium, potassium, phosphorus losses were measured over a 7-month period in the El Ciprés Natural Reserve, located in the Bellavista rural community, municipality of El Dovio, in the western cordillera of the Andes of the department of Valle del Cauca, Colombia. At 1700-1800 meters above sea level, the area presents an average temperature of 18 °C, an average annual precipitation of 2500-2700 mm, 90% relative humidity, and a 62% slope. According to the Holdridge climate classification system, it corresponds to a lower montane rain forest. Measurements were taken in runoff plots, each 32 m², with seven types of vegetation cover: giant bamboo (Guadua angustifolia Kunth; secondary forest; pastures (Brachiaria decumbens; coffee (Coffea arabica; protein bank (Trichanthera gigantea; forage cane (Saccharum officinarum

  18. Forced displacement in Colombia: Magnitude and causes

    OpenAIRE

    Ana María Ibáñez

    2009-01-01

    The article describes the magnitude, geographical extent, and causes of forced populationdisplacements in Colombia. Forced migration in Colombia is a war strategy adopted by armed groups to strengthen territorial strongholds, weaken civilian support to the enemy, seize valuable lands, and produce and transport illegal drugs with ease. Forced displacement in Colombia today affects 3.5 million people. Equivalent to 7.8 percent of Colombia’s population, and second worldwide only to Sudan, this s...

  19. Fiscal and Macroeconomic Effects of Colombia`s Pension Reform Fiscal and Macroeconomic Effects of Colombia`s Pension Reform

    Directory of Open Access Journals (Sweden)

    Klaus Schmidt-Hebbel

    1997-03-01

    Full Text Available In 1994 Colombia started replacing its state-run and pay-as-you-go (PAYG pension system by a privately-run and fully-funded scheme. Numerical simulations for the government's reform transition reveal implicit PAYG debt levels and corresponding reform transition deficits that are high relative to other countries, considering that Colombia's old pension system was characterized by low coverage, low system maturity, and a young population.Simulation results show that output could increase by 10% due to higher future saving caused by financing the pension deficit by a fiscal contraction -but this would occur only in the very long term. Sooner and possibly larger gains could be reaped from higher employment and production in formal sectors, and the development of capital markets spurred by the reform. In addition, Colombia's new pension systemthat includes a redistributive pillar targeted at the poor -is potentially more equitable than the old scheme, To reap these efficiency and equity bellefits, however, the Colombian government would have to adopt complementary reforms. They include giving the private fully-funded pension pillar a commanding role, supporting the development of capital markets, and bolstering formal-sector employment by the reduction of deadweight tax burden of non-pension programs that are currently financed by payroll taxes on labor. In 1994 Colombia started replacing its state-run and pay-as-you-go (PAYG pension system by a privately-run and fully-funded scheme. Numerical simulations for the government's reform transition reveal implicit PAYG debt levels and corresponding reform transition deficits that are high relative to other countries, considering that Colombia's old pension system was characterized by low coverage, low system maturity, and a young population.Simulation results show that output could increase by 10% due to higher future saving caused by financing the pension deficit by a fiscal contraction -but this would

  20. Exploración de la variabilidad genética del maracuyá (Passiflora edulis f. flavicarpa Degener como base para un programa de fitomejoramiento en Colombia

    Directory of Open Access Journals (Sweden)

    John Ocampo

    2013-12-01

    Full Text Available El maracuyá es uno de los principales frutales del Neotrópico y en Colombia existen cerca de 6000 ha cultivadas con esta fruta, con una producción de 90,000 t/año. No obstante este potencial, los cultivos presentan graves problemas fitosanitarios y degeneración genética, lo que se manifiesta por una reducción de la vida útil de la plantación. El objetivo de esta investigación fue evaluar el grado de variabilidad genética del maracuyá cultivado en Colombia como base para un programa de fitomejoramiento. Las recolecciones se realizaron en los departamentos de Antioquia, Caldas, Cauca, Huila, Tolima y Valle del Cauca mediante una selección masal participativa con los productores. En cada cultivo, se seleccionaron diez frutos al azar (calidad extra de las plantas más sobresalientes por productividad y sanidad, en las cuales se registró la incidencia de insectos plaga y enfermedades. Los frutos fueron caracterizados con 11 variables fisicoquímicas y analizados mediante la descomposición de la varianza (univariado y el análisis de clasificación (neighbour joining. Los resultados mostraron que los trips (Neohydatothrips spp. y la virosis (SMV son los problemas fitosanitarios que más afectan el cultivo en los sitios del estudio. El análisis univariado del fruto mostró un porcentaje de variabilidad promedio total de 14.31% (CV, destacándose los pesos de la cáscara (20.53% y de la semilla (20.47%. Tomando en cuenta los parámetros de calidad (°Brix y %pulpa + semilla se identificaron ocho accesiones élite provenientes de Caldas, Valle del Cauca y Antioquia. El análisis de clasificación mostró una alta variabilidad, con poca estructuración por origen geográfico. Estos resultados permitirán iniciar un proceso de mejoramiento genético a partir de genotipos superiores de las accesiones élite identificadas.

  1. The genus Triphora (Triphoreae, Orchidaceae in Colombia

    Directory of Open Access Journals (Sweden)

    Szlachetko Dariusz L.

    2014-06-01

    Full Text Available In Colombia, four species of Triphora (Orchidaceae are recognized. Two species (Triphora galeanoi and T. vichadaensis are newly described. As circumscribed here, the two new species occur exclusively in Colombia apart from T. foldatsii, being known from Colombia and Venezuela, and T. gentianoides, ranging from the USA (Florida in the north to Colombia in the south. For the species treated, a taxonomic description, synonymy and information about distribution are provided. Additionally,for the two new species, illustrations of flower parts are provided. A key for the determination of the Colombian species of Triphora is included.

  2. Niveles y efectos de la consanguinidad en variables de comportamiento durante la tienta y la lidia en dos ganaderías de reses bravas de Colombia

    Directory of Open Access Journals (Sweden)

    David Calero Quintero

    2010-04-01

    Full Text Available En el estudio se estimaron los niveles y las tendencias de la consanguinidad en variables de comportamiento durante la tienta y la lidia en dos ganaderías colombianas de reses bravas: Ernesto González Caicedo (EGC - Popayán, Cauca, encaste Santacoloma; y Guachicono (GUA - Bolívar, Cauca, Colombia, encaste Parladé. Se analizaron los pedigríes de 2.094 animales EGC nacidos entre 1918 y 2007 y 963 GUA, nacidos entre 1928 y 2005. Los coeficientes de consanguinidad de los bovinos se obtuvieron usando el Proc Inbreed del programa SAS v. 9.1.3. Se estudiaron además de las notas del ganadero, las variables propias y comunes a las faenas de tienta y de lidia. Los promedios y las desviaciones estándar de la consanguinidad en EGC y GUA fueron 4.9±6.6 y 4.2±4.2% para todos los animales, 4.5±5.8 y 6.0±3.4% para la última época estudiada, y 10.6±5.8 y 6.5±3.5% considerando sólo los consanguíneos. Se encontraron efectos positivos en las variables responsables de ‘toreabilidad’ y estilo, y depresivos en la fuerza de los animales. La consanguinidad actual en ambas ganaderías es mediana, sin embargo debe diseñarse un plan de apareamiento.

  3. Valley-contrasting orbital angular momentum in photonic valley crystals

    CERN Document Server

    Chen, Xiaodong; Dong, Jianwen

    2016-01-01

    Valley, as a degree of freedom, has been exploited to realize valley-selective Hall transport and circular dichroism in two-dimensional layered materials. On the other hand, orbital angular momentum of light with helical phase distribution has attracted great attention for its unprecedented opportunity to optical communicagtions, atom trapping, and even nontrivial topology engineering. Here, we reveal valley-contrasting orbital angular momentum in all-dielectric photonic valley crystals. Selective excitation of valley chiral bulk states is realized by sources carrying orbital angular momentum with proper chirality. Valley dependent edge states, predictable by nonzero valley Chern number, enable to suppress the inter-valley scattering along zigzag boundary, leading to broadband robust transmission in Z-shape bend without corner morphological optimization. Our work may open up a new door towards the discovery of novel quantum states and the manipulation of spin-orbit interaction of light in nanophotonics.

  4. La industria maltera en colombia

    OpenAIRE

    Parra Restrepo, Bernardo

    2011-01-01

    Este artículo estudia la industria maltera de Colombia, su origen, evolución y el estado en que se encuentra. Presenta cifras respecto al comportamiento de la producción y ventas. Muestra las relaciones de propiedad y describe la importancia relativa de la empresa con las otras subsidiarias del grupo económico al que pertenece. De otra parte analiza las relaciones obrero/patronales en el contexto actual y las relaciones con la agroindustria colombiana.

  5. Ways for peace in Colombia

    OpenAIRE

    Eduardo Andrés Sandoval Forero

    2013-01-01

    This paper addresses the socio-political conflict and direct violence, structural and cultural performing in Colombia comes from the decade of the fifties of last century. From the peace studies and conflict, reflects on the armed confrontation of different perspectives of negotiation between the government and the insurgency, and peace building. Are some significant ideas of civilsociety organizations around the peace process, and made some reflections on the possible scenarios of negative...

  6. Energy sector development in Colombia

    Energy Technology Data Exchange (ETDEWEB)

    Ospina, G. [Ecopetrol, (Colombia)

    1997-12-31

    The current status of the petroleum industry in Colombia with reference to exploration, production, reserves and hydrocarbon potential was discussed. The upstream operations structure and challenges that the industry will encounter in the next century were outlined. Colombia ranks fifth in Latin America`s oil production and fourth in terms of reserves. By December 1997, when the Cusiana and Cupiagua fields reach a production of almost 450,000 barrels per day, Colombia will produce almost 900,000 barrels per day. Exploration and production activities are under way in 11 of the 18 Colombian basins. Ecopetrol is responsible for much of the exploration activity in the Llanos Foothills. The risk sharing contract concept, developed by Ecopetrol, was described. Under this mechanism, Ecopetrol participates jointly with a partner by underwriting 50 per cent of the investment necessary for exploration and for development. In return, the partner carries out the exploration at its own risk, and is given a contract for 28 years (six years for exploration and 22 years for production). The distribution of revenues after a 20 per cent royalty charge up front, is 50 per cent to Ecopetrol and 50 per cent to the associate, up to a production of 60 million barrels. Above this level, the distribution is according to the `R` factor which establishes a ratio between the accumulated revenue and the outlays of the associate.

  7. Energy sector development in Colombia

    International Nuclear Information System (INIS)

    The current status of the petroleum industry in Colombia with reference to exploration, production, reserves and hydrocarbon potential was discussed. The upstream operations structure and challenges that the industry will encounter in the next century were outlined. Colombia ranks fifth in Latin America's oil production and fourth in terms of reserves. By December 1997, when the Cusiana and Cupiagua fields reach a production of almost 450,000 barrels per day, Colombia will produce almost 900,000 barrels per day. Exploration and production activities are under way in 11 of the 18 Colombian basins. Ecopetrol is responsible for much of the exploration activity in the Llanos Foothills. The risk sharing contract concept, developed by Ecopetrol, was described. Under this mechanism, Ecopetrol participates jointly with a partner by underwriting 50 per cent of the investment necessary for exploration and for development. In return, the partner carries out the exploration at its own risk, and is given a contract for 28 years (six years for exploration and 22 years for production). The distribution of revenues after a 20 per cent royalty charge up front, is 50 per cent to Ecopetrol and 50 per cent to the associate, up to a production of 60 million barrels. Above this level, the distribution is according to the 'R' factor which establishes a ratio between the accumulated revenue and the outlays of the associate

  8. Algunos digéneos de Rhinella marina (Anura: Bufonidae en Colombia Some digeneans of Rhinella marina (Anura: Bufonidae in Colombia

    Directory of Open Access Journals (Sweden)

    Mauricio Bechara

    2010-04-01

    Full Text Available Se estudiaron 40 sapos Rhinella marina Linnaeus, 1758 (24 machos y 16 hembras del Valle de Aburrá, Antioquia, Colombia, 8 de los cuales se encontraron parasitados por 2 especies de digéneos: Pseudosonsinotrema chabaudi (Caballero y Caballero, 1969 Sullivan, 1974 (Pleurogenidae (primer registro para Colombia y para el hospedero y Mesocoelium monas (Rudolphi, 1819 Freitas, 1958 (Brachycoeliidae, previamente registrado para este país. De las 2 especies de helmintos recolectadas, la que alcanzó los mayores niveles de prevalencia (40% y abundancia media (14.7 fue P. chabaudi en San Antonio de Prado, y la intensidad promedio más elevada fue para M. monas, en los sapos de Barbosa (46.7.Eight of 40 Rhinella marina Linnaeus, 1758 (24 males and 16 females from Aburrá Valley, Antioquia, Colombia, were infected with 2 digenea species: Pseudosonsinotrema chabaudi (Caballero y Caballero, 1969 Sullivan, 1974 (Pleurogenidae, which represents new host and country records, and Mesocoelium monas (Rudolphi, 1819 Freitas, 1958 (Brachycoeliidae, which was previously reported for the country. Pseudosonsinotrema chabaudi in San Antonio de Prado reached the highest prevalence levels (40% and mean abundance (14.7, whereas the highest mean intensity was recorded for M. monas in cane toads from Barbosa (46.7.

  9. Una nueva e interesante passiflora de colombia

    OpenAIRE

    Uribe Uribe Lorenzo

    2012-01-01

    En el material botánico llegado recientemente al Herbario Nacional Colombiano he encontrado una interesantísima Passiflora, descubierta cerca del Puerto de Buenaventura en el Departamento del Valle del Cauca. Su estudio me mostró que se trataba de una especie de la rara Sección Tryphostemmatoides Harms (considerada como Sub-género por Killip) , que comprende unos pocos bejucos herbáceos de hojas sencillas e Inflorescencias constituidas por un pedúnculo que termina en un largo zarcillo y que s...

  10. PYROCLASTIC FLOW MODELING TO RECONSTRUCT A VOLCANIC EDIFICE IN PAIPA (BOYACÁ-COLOMBIA.

    Directory of Open Access Journals (Sweden)

    Rodríguez Óscar

    2004-06-01

    Full Text Available Pyroclastic deposits produced by the domes collapse (resurgence of a caldera collapse, at the west of the Honda Grande creek (Paipa, Boyacá-Colombia were related by INGEOMINAS. These deposits fill the valleys of Olitas, Calderitas and a creek at the south of the Alto de los Volcanes reaching distances near to 3 km from the focus between the Alto de los Volcanes and El Mirador Hill.The flows were modeled using 3D Software (Sheridan and Kover, 1996. A volcanic simulation was done obtaining the height and morphology of the volcanic edifice before the collapse during the last eruptive event.

  11. Biogeography of the areas and Canthonini (Coleoptera: Scarabaeidae of dry tropical forest in Mesoamerica and Colombia

    Directory of Open Access Journals (Sweden)

    Dora Nancy Padilla-Gil

    2007-01-01

    Full Text Available This biogeographical analysis examines the historical, geological, climatic and ecological processes that have influenced the formation of the dry tropical forests (DTF of Mesoamerica and Colombia, areas that are the setting for multiple biogeographical stories that in this case are illustrated by the patterns and evolutionary processes of Canthonini. In this study we test the hypothesis that the Canthonini fauna of dry tropical forests has a South American affinity. To this end, we compare extant species from a tract of dry tropical forest in Mexico, a second enclave in Costa Rica, four from the Caribbean region of Colombia and finally one from the north of Tolima in the Upper Magdalena River Valley, Colombia. The geomorphological characteristics of the enclaves of DTF are also compared, as are the geographical distribution and taxonomic affinities of each of the species found in these dry tropical forests. The biogeographical, historical and geological aspects of the enclaves were evaluated using a Parsimony Analysis of Endemicity (PAE, with two tropical rain forests as the outgroup: Leticia (Amazonas, Colombia and Los Tuxtlas (Veracruz, Mexico. This study reveals the origin and distribution of Neotropical dry forests in the Pleistocene, and the establishment of its dry conditions during the Holocene. It also reveals apparent similarities among the Canthonini of the dry tropical forests of Mexico, Costa Rica and Colombia, with three geographical distribution patterns that correspond to different degrees of expansion towards the north and the diversification of evolutionary lines, and even species of South American origin. The comparison of the cladogram generated for species of Canthonini with that of the geological events that have occurred in the study regions indicates that the distribution of Canthonini in dry tropical forests began during the Pliocene with the re-establishment of the Panamanian connection, with no evidence of previous

  12. Prevention of School Desertion in Colombia

    Science.gov (United States)

    Walker, Sarah

    2004-01-01

    Colombia has been ravaged for over 40-years by escalating civil conflict and more than half of its population of 42 million live below the poverty line. As a result, many children and young people are excluded from school and drop out rates of those who gain places are high. It is in Bogota, the capital of Colombia, where many displaced families…

  13. Expanding Opportunities for Rural Finance in Colombia

    OpenAIRE

    Gutierrez, Eva; Reddy, Rekha

    2015-01-01

    The purpose of this note is to provide policy recommendations to improve access to credit of rural populations and small agricultural producers under financially sustainable schemes. Although the agricultural sector remains an important source of employment, agricultural credit is a small fraction of commercial credit in Colombia. The share of agricultural credit in Colombia is below level...

  14. Landscape evolution and origin of Lake Fúquene (Colombia): Tectonics, erosion and sedimentation processes during the Pleistocene

    Science.gov (United States)

    Sarmiento, Gustavo; Gaviria, Sergio; Hooghiemstra, Henry; Berrio, Juan Carlos; Van der Hammen, Thomas

    2008-08-01

    The Basin of Ubaté-Chichinquirá (5°28'N, 73°45' W, c. 2580 m altitude) includes the Fúquene Valley and is located in the central part of the Eastern Cordillera of Colombia. Rocks and sediments were folded and faulted during the Miocene, uplifted during the (late) Pliocene, and affected by glaciers during the Pleistocene. Successive glacial and interglacial periods left significant marks in the landscape which were used to reconstruct six stages in the development of the landscape along a relative chronology. During early Pleistocene episode 1 glaciers formed U-shape valleys. Evidence of the impact of ice sheets has been found as far downslope as ca. 2900 m elevation. During episode 2 moraines developed which were cut by the present San José River. During episode 3 abundant sediment was produced by glacial erosion. It accentuated the sculpturing of hard rock and deepening of the drainage basin. The ancestral Ubaté-Suarez River constituted a dynamic erosive system that gave rise to deep V-shaped valleys and progressively formed a set of intricate valleys with a high sediment production. Finally, intense glacial and fluvio-glacial erosion led to a geomorphological system with high energy levels and intensive sediment transport leading to wide valleys. During episode 4 the Ubaté-Suarez River eroded and deepened its valley until it captured the old El Hato-San José Valley. It caused intense erosion of the moraine and the fluvio-glacial gravels. Deep V-shaped valleys stabilized in the high areas of the main drainage system and these valleys form the present-day fluvial sub-basins. During episode 5 the deep valley in the northern part of the Basin of Ubaté-Chichinquirá developed. During middle Pleistocene episode 6 colluvial sediments formed the Saboya dam and a lake was formed in the river valley of which the present Lake Fúquene is only a small remnant. Lithological changes indicate fluctuating water levels and Lake Fúquene must have expanded periodically

  15. Breathing Valley Fever

    Centers for Disease Control (CDC) Podcasts

    2014-02-04

    Dr. Duc Vugia, chief of the Infectious Diseases Branch in the California Department of Public Health, discusses Valley Fever.  Created: 2/4/2014 by National Center for Emerging and Zoonotic Infectious Diseases (NCEZID).   Date Released: 2/5/2014.

  16. Silicon Valley's Turnaround

    Institute of Scientific and Technical Information of China (English)

    Joseph Leu

    2006-01-01

    @@ During Silicon Valley's dramatic economic growth fueled by the Internet boom and business investment in information technology, employment in the region's high-tech sec tor tripled between 1995 and 2000. The economic boom gave rise to many new firms,drawing em ployees into high-tech jobs from other regions and other industries.

  17. Silicon Valley Policy

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    @@ Silicon Valley is home to the most dynamic industries in the California economy. These industries--the high-tech sector--are driven by innovation, and each new wave of innovation is usually led by creative entrepreneurs starting new firms.

  18. Hormigas como plagas potenciales en tres criaderos de mariposas del suroccidente de Colombia

    Directory of Open Access Journals (Sweden)

    Sanabria-Blandón María Catalina

    2009-03-01

    Full Text Available La fauna de hormigas asociada con la zoocría de mariposas en los departamentos de Valle del Cauca y Quindío (Colombia, se colectó por captura manual en tres ambientes (mariposario, vivero y laboratorio. De 125 muestras se extrajeron 779 hormigas, pertenecientes a cinco subfamilias, 18 géneros y 24 especies. El mayor número de especies se registró en el área de laboratorio (17, seguido por vivero (16 y mariposario (13. No se encontraron diferencias significativas (Chi2 = 6.019, g.l.= 10, P>0.75, al evaluar la preferencia de las hormigas por un ambiente, sin embargo se observaron tendencias de esta manera: Wasmannia auropunctata (50%, Linepithema sp. (47%, Monomorium floricola (40% fueron las más importantes en el laboratorio, mientras que en el mariposario fueron Linepithema humile (42%, Camponotus novogranadensis (39% y Paratrechina longiconis (37.5% y en el vivero W. auropunctata (37.5% y P. longicornis (37.5%. Algunas de estas hormigas son reconocidas como vagabundas y plagas urbanas, lo que podría considerarse como un riesgo potencial para las actividades de zoocría de mariposas. En el presente estudio se propuso conocer las especies de hormigas que se asocian con tres criaderos de mariposas localizados en el suroccidente colombiano.

  19. COMERCIO DE FAUNA SILVESTRE EN COLOMBIA WILDLIFE TRADE IN COLOMBIA

    OpenAIRE

    Néstor Javier Mancera Rodríguez; Otto Reyes García

    2008-01-01

    Este trabajo ofrece un panorama sobre las actividades relacionadas con el comercio de bienes derivados de las especies de fauna silvestre en Colombia, abordando el tema desde el desarrollo que ha tenido su actividad productiva, el aprovechamiento extractivo, así como la dinámica de su comercio legal e ilegal en el país y el desarrollo y promoción de alternativas productivas sustentadas en su aprovechamiento. Se analizó la información secundaria de entidades como el Ministerio de Ambiente, Viv...

  20. Heredabilidad y repetibilidad de la nota de tienta y de lidia en una ganadería de reses bravas en Colombia

    Directory of Open Access Journals (Sweden)

    Durán C. Carlos Vicente

    1995-12-01

    Full Text Available

    A study in the bullfight herd of Ernesto González Caicedo located in the Department of Cauca, Colombia, mostly of Santa Coloma lineage (a strain of bull-fighting cattle, either pure bred or up graded, evaluated between 1963 and 1994. The information arose from 948 standing records of "Nota de Tienta" (a quantitative test given to females to evaluate their potential for the bullfight. The test is used to select breeding darns and also used in males to select the future sires and "Nota de Lidia" (a quantitative test given to bulls to evaluate their overall performance in the bullfight. The Nota de Tienta and Nota de Lidia may not allow to make comparisons due the differences between both practices, but a "t" test to determinate evaluation type and sex effects over the calculate parameters showed them to be comparable (P <0.05. The repeatability was estimated as 0.18, a value inferior to the estimated heritability index h2 = 0.24. The difference may be explained by a bias in the estimated values of temporal and permanent environmental variances resulting from special environmental effects which influence on the behavior of the animal when it is tested.

    Se realizó un estudio en la ganadería de lidia de Ernesto González Caicedo, fundamentalmente de origen Santa Coloma, pura o por cruza absorbente de ganado mexicano, ubicada en el departamento del Cauca, Colombia. La información utilizada constó de 948 Notas de Tienta y de Lidia entre 1963 y 1994. Las notas de Tienta y de Lidia, que por el desarrollo un tanto diferente de las dos prácticas, pueden no permitir comparaciones, resultaron equiparables luego de realizar una prueba de "t" para medir efectos del tipo de evaluación y el sexo sobre la nota obtenida (P<0.05. La repetibilidad estimada para estas variables resultó en rxx= 0.18, un valor inferior al índice de heredabilidad obtenido durante la misma investigación, calculado en h2 = 0.24, a través de diferentes

  1. Infraestructura de transporte en Colombia

    OpenAIRE

    Tito Yepes; Juan Mauricio Ramírez; Leonardo Villar; Juliana Aguilar

    2013-01-01

    Colombia necesita adoptar una agenda estratégica para poder atender el rezago en que se encuentra el sector de infraestructura de transporte. Dos reformas largamente aplazadas son determinantes para el éxito de esa agenda: Primero, aprovechar la oportunidad que representa la agenda de Cambio Climático para hacer la infraestructura de una manera más consistente con nuestra geografía. Segundo, desarrollar las instituciones que acompañan el desarrollo físico de la agenda de transporte. Estas se ...

  2. MICROCRÉDITO EN COLOMBIA

    Directory of Open Access Journals (Sweden)

    Bernardo Barona Z

    2004-01-01

    Full Text Available El artículo tiene como propósitos: proporcionar una visión general de la forma en que el financiamiento de los microempresarios y los estratos más vulnerables de la población ha sido abocada en Colombia; resumir los grandes retos que enfrenta en la actualidad el programa de microfinanzas en el mundo, presentar el programa de investigación que están adelantando las Universidades Icesi y del Valle en Colombia en asocio con la Universidad de Laval en Canadá y con algunos centros de Investigación de Filipinas, Marruecos y Benin y algunos resultados parciales de este esfuerzo investigativo; y, presentar algunas recomendaciones tendientes a fortalecer a las organizaciones microfinancieras en el país. Una revisión de la historia y el estado actual del microcrédito en Colombia indica que los esfuerzos hasta ahora realizados parecen haberse quedado muy cortos frente a las necesidades de financiación de los microempresarios: la cobertura de microemepresarios alcanzada por instituciones gubernamentales, ONG y la banca convencional ha sido muy baja. En cuanto a los retos que afronta el movimiento microfinanciero en el mundo dos muy importantes son (i, clarificar el efecto de los diferentes esfuerzos de microcrédito realizados en la reducción de la pobreza de la población del país y, (ii, identificar mecanismos para lograr un aumento significativo de la cobertura mediante un balance adecuado entre regulación, supervisión y disciplina de mercado. Los principales resultados (parciales obtenidos en la línea de investigación descrita en este artículo son (i, contrario a lo que con frecuencia se asume, a medida que una organización cooperativa crece en tamaño no necesariamente se torna más eficiente: los posibles beneficios de la mayor escala fueron más que compensados en las empresas estudiadas por nosotros por la propensión al gasto excesivo que exhiben los gerentes en caso de instituciones de mayor tamaño (ii, las cooperativas

  3. La industria maltera en Colombia

    Directory of Open Access Journals (Sweden)

    Bernardo Parra Restrepo

    2002-06-01

    Full Text Available Este artículo estudia la industria maltera de Colombia, su origen, evolución y el estado en que se encuentra. Presenta cifras respecto al comportamiento de la producción y ventas. Muestra las relaciones de propiedad y describe la importancia relativa de la empresa con las otras subsidiarias del grupo económico al que pertenece. De otra parte analiza las relaciones obrero/patronales en el contexto actual y las relaciones con la agroindustria colombiana.

  4. Food Innocuousness: Prospect In Colombia

    Directory of Open Access Journals (Sweden)

    Ana Elvira Ortiz Amaya

    2011-12-01

    Full Text Available Food innocuousness, on all over the world, is receiving more attention due to the increment in the incidence of food borne diseases (ETAs, the worry about emergent known dangers and the globalization of trade. Consequently, this literature review shows the progress in relation to this thematic, in Colombia. It covers topics as the relation between food innocuousness and safety, the international and national organizations involved, the developments, in legislation, the system of epidemiological surveillance of ETAs and their perspectives, as cornerstones to ensure food quality

  5. [Sporogenesis and spores of Equisetum bogotense (Equisetaceae) from mountain areas of Colombia].

    Science.gov (United States)

    Rincón-Baron, Edgar Javier; Torres, Gerardo Andrés; Rolleri, Cristina Hilda

    2013-09-01

    Studies on some reproductive traits in Equisetum species are scarce and valuable to understand species distribution. Therefore, a detailed study of the sporogenesis process and spore development in E. bogotense is presented, with an analysis of the main events during meiosis, maturation of spores, spore wall ultrastructure, orbicules and elaters. Specimens were collected from 500 to 4500 m in Cauca, Colombia. Strobili at different maturation stages were fixed, dehydrated, embedded in resin, and ultra-microtome obtained sections were stained with Toluidine blue. Observations were made with optical microscopy with differential interference contrast illumination technique (DIC), transmission and scanning electron microscopy (TEM and SEM). Ultrathin sections (70-80 microm) for TEM observations were stained with uranyl acetate and lead citrate; while samples for SEM observations, were fixed, dehydrated in 2.2-dimethoxypropane and dried at critical point as in standard methods. Strobili have numerous mature sporangiophores, each one with a peltate structure, the scutellum, bearing five-six sessile sporangia attached to the axis of strobilus by the manubrium. Immature sporocytes (spore mother cells) are tightly packed within the young sporangia. The sporocytes quickly undergo meiosis, by passing the stage of archesporium and give origin to tetrads of spores. The tapetum loses histological integrity during early stages of sporogenesis, intrudes as a plasmodial mass into the cavity of the sporangium, partially surrounding premeiotic sporocytes, and then, tetrads and adult spores. The tapetum disintegrates towards the end of the sporogenesis, leaving spores free within the sporangial cavity. Spores present several cytological changes that allow them to achieve greater size and increase the number of plastids, before reaching the adult stage. Sporoderm includes three layers external to the cytoplasmic membrane of the spore cell, and they are pseudoendospore, exospore and

  6. Green valley galaxies

    Directory of Open Access Journals (Sweden)

    Salim S.

    2014-01-01

    Full Text Available The “green valley” is a wide region separating the blue and the red peaks in the ultraviolet-optical color magnitude diagram, first revealed using GALEX UV photometry. The term was coined by Christopher Martin (Caltech, in 2005. Green valley highlights the discriminating power of UV to very low relative levels of ongoing star formation, to which the optical colors, including u−r, are insensitive. It corresponds to massive galaxies below the star-forming, “main” sequence, and therefore represents a critical tool for the study of the quenching of star formation and its possible resurgence in otherwise quiescent galaxies. This article reviews the results pertaining to (predominantly disk morphology, structure, environment, dust content and gas properties of green valley galaxies in the local universe. Their relationship to AGN is also discussed. Attention is given to biases emerging from defining the “green valley” using optical colors. We review various evolutionary scenarios and we present evidence for a new one, the quasi-static view of the green valley, in which the majority (but not all of galaxies currently in the green valley were only partially quenched in the distant past and now participate in a slow cosmic decline of star formation, which also drives down the activity on the main sequence, presumably as a result of the dwindling accretion/cooling onto galaxy disks. This emerging synthetic picture is based on the findings from Fang et al. (2012, Salim et al. (2012 and Martin et al. (2007, as well as other results.

  7. Revitalizing the Mahoning Valley

    OpenAIRE

    T F Buss; Vaughan, R J

    1987-01-01

    For nearly a decade, since the closing of its steel mills, the Mahoning Valley in northeast Ohio has pursued a traditional development strategy, based upon large capital subsidies, to attract new or support existing businesses. These policies have failed. As a result, local business leaders have questioned the foundations of traditional policy and have developed an alternative strategy that involves a far broader set of state and local programs in the development process. The new strategy aim...

  8. Antecedentes Indígenas Del Urbanismo Colonial En Dos Regiones De Colombia: Los Andes Orientales Y El Valle De Aburrá.

    Directory of Open Access Journals (Sweden)

    Carl Henrik Langebaek

    2002-02-01

    Full Text Available This paper evaluates traditional wisdom related to the introduction of central places and settlement hierarchies by the Spaniards in what today is Colombia. It is argued that both processes have a long prehispanic tradition. It is also argued that the arrival of the Spaniards and the colonial system actually implied less centralized settlements as well as a strategy of resistance that led incligenous populations to live in scattered dwellings away from the colonial power. This paper is based upon research in the Eastern Highlands (Fúquene and the Leiva Valley and the Aburrá Valley, in Antioquia.

  9. Gasto por procedimiento en la especialidad de cardiología intervencionista en pacientes con enfermedad coronaria del Seguro Social, Seccional Valle del Cauca. Noviembre 2003-diciembre 2004

    Directory of Open Access Journals (Sweden)

    Hernán Rodríguez

    2006-12-01

    Full Text Available Introducción: La enfermedad coronaria afecta a una gran proporción de afiliados al Seguro Social (ISS Valle del Cauca. Aquí se describe el gasto en la especialidad de cardiología intervencionista que asumió esta empresa promotora de salud (EPS por cuenta de la enfermedad entre noviembre 2003-diciembre 2004. El gasto sobrepasa lo presupuestado por el ISS y este desequilibrio se produce bajo el régimen contributivo del actual sistema de seguridad social colombiano, que actúa en contra del ISS pues un alto número de sus afiliados son mayores de 45 años. La población compensada del ISS Valle del Cauca es de 423,440 personas de las cuales 43% superan los 45 años de edad, segmento donde se observa mayor riesgo de enfermedad coronaria.Metodología: El estudio es descriptivo. Se analizó la distribución de la población compensada por edad y sexo y el pago hecho por el ISS Valle del Cauca a las instituciones prestadoras de salud (IPS en la especialidad de cardiología intervensionista en el período señalado. La información se obtuvo de la facturación presentada por las IPS al Seguro Social y se cruzó con los registros individuales de procedimientos en salud (RIPS para identificar los pacientes afectados por enfermedad coronaria y clasificarlos teniendo en cuenta los Códigos Internacionales de Enfermad (CIE 10 así como el Manual de Actividades, Procedimientos e Intervenciones del Plan Obligatorio de Salud (MAPIPOS. Se practicaron 1,349 procedimientos a 1,103 pacientes del ISS con diagnóstico de enfermedad coronaria.Análisis y resultados: La población compensada del ISS Valle del Cauca representa 9.3% de la población vallecaucana (4’532,378 habitantes en el Departamento/423,400 compensados. De éstos 43% son mayores de 45 años, en riesgo de padecer enfermedad coronaria y requerir intervención médica. El ISS pagó a las IPS que prestan servicios de cardiología intervencionista la suma de $5’320,786.046 (más de cinco mil

  10. Concentración ideal de electrolitos en la superficie de suelos de los municipios de Palmira, El Cerrito y Guacarí en el Valle del Cauca, Colombia Ideal electrolite concentration in soil surface from Palmira, El Cerrito and Guacarí, Valle del Cauca, Colombia

    Directory of Open Access Journals (Sweden)

    Edgar Enrique Madero Morales

    2008-10-01

    Full Text Available Tras añadir cantidades variables de CaCl2, equivalentes a la Concentración Crítica de Coagulación (CCC, llamada concentración de electrolitos ideal, se evaluó el movimiento de agua en muestras de suelo superficial y se relacionó con los contenidos de carbono orgánico, arcilla y pH en 112 muestreos distribuidos en esquema logarítmico sobre 84.000 ha; se utilizó el programa ArcGIS 8.3 para producir mapas geoestadísticos. La CCC mejoró significativamente la conductividad hidráulica saturada en la mayoría de los suelos analizados y mostró correlación inversa con el contenido de arcilla y el pH, y directa con el porcentaje de carbono orgánico. Por interpolación se obtuvieron las áreas más susceptibles a sellarse con agua lluvia.After addition of variable quantities of CaCl2 equivalent to critical coagulation concentration (CCC (ideal soil electrolyte concentration the water movement in surface soil samples was evaluated and was also related with organic carbon, clay content, and soil pH in 112 soil samples distributed in a logarithmic squeme over 84.000 ha. The Arc GIS 8.3 software to produce geoestadistical maps was used. The CCC improved significantly the saturated soil hydraulic conductivity in majority of soils, showed inverse correlation with clay content and pH and direct correlation with organic carbon percentage. Using the interpolation procedure the most susceptible areas to soil sealing were obtained.

  11. EPIDEMIOLOGÍA DEL DENGUE EN PALMIRA VALLE, COLOMBIA 2001-2004 Dengue in Palmira-Vallle(Colombia2001-2004. An epidemiological

    Directory of Open Access Journals (Sweden)

    Jorge Martín Rodríguez

    2006-06-01

    Palmira- Valle del Cauca (Colombia between 2001 and 2004. Materials and methods. Descriptive study, which used the registries of monitoring system in Public Health of Palmira, originating on daily harvesting of health services and weekly consolidation at local health direction. Results. A reduction of the 88,2% of the registries of classic dengue was observed from 2001 to 2004, being greater in the group of 15-44 years by a reduction of 92,2%, in the group of 5-14 years diminution was of 89,8% and in the people of 45- 59 years it was of the 88,2%. Notification of probable cases of classic and hemorrhagic dengue has an important deficit because medical personnel of health institutions don’t use standardized criteria for these diseases diagnostic. Conclusion. It is necessary to implement periodic qualifications to the health professionals in classic and hemorrhagic dengue, and to continue with the processes of entomologic monitoring and social participation for control and prevention of this disease.

  12. Evolución ambiental de la depresión momposina (colombia) desde el pleistoceno tardío a los paisajes actuales

    OpenAIRE

    Herrera, Luisa Fernanda; Sarmiento, Gustavo; Romero, Fredy; Botero, Pedro José; Berrío, Juan Carlos

    2012-01-01

    The Momposina Basin, located in the lower Magdalena valley, in northern Colombia, is an example of an anastomosed system since the Pleistocene, which was developed as an answer to the progressive sinking of a transtensive basin.  The anastomosed system is controlled by microtectonic blocks, which are limited by faults indicating a differential subsidence with a mayor sinking of the southern and western blocks. Water sources move towards the southwestern part of the region, as a product of the...

  13. Operational fog collection and its role in environmental education and social reintegration: A case study in Colombia

    Science.gov (United States)

    Escobar, C. M.; Lopez, A.; Aristizabal, H. F.; Molina, J. M.

    2010-07-01

    Experimental efforts with fog collection in Colombia began eight years ago, and in recent papers we have suggested the implementation of operational fog collection as an alternative to meet water requirements in rural areas of the Andes Mountain Range. Since then, an increasing number of individuals from academia and environmental organizations in the country have shown a remarkable interest on this appropriate technology, and some started its exploration in a larger scale. In this work we describe the implementation process of the first operational fog collection project in Colombia and discuss its role in rural water supply, in environmental education issues and in the process of "social reintegration" of people who have been victims of forced displacement. Both the fog collection evaluation stage and construction and administration of the operational system involved the participation of the community of a rural village. The study zone, located in the Andes Mountains of the Valle del Cauca Department and with altitudes ranging from 2600 to 2800 meters a.s.l., has serious limitations in water availability. Eight standard fog collectors (SFC) were implemented and used during the period May/2008 - Feb/2009 in order to assess the water yield from fog. The best average monthly collection rate in the period of study was around 2.0 l.m-2.day-1. The constructed large fog collector (LFC), with a vertical collection surface of 25 m2, and the associated hydraulic system are currently managed and administered by the village inhabitants. The fog collection system benefits a rural school, and the water is mainly used in small-scale irrigation activities for horticultural crops and livestock development. The project has also brought positive impacts in the community organization, mainly comprising people who have been forced out of their rural homes by the country's nearly half-century old armed conflict. The system also allows agriculture- and environment-related issues to be

  14. Risk management in Aburra Valley. A long - ranch history

    International Nuclear Information System (INIS)

    Risk management in Medellin and the Aburra Valley has been transformed over the past 80 years. Until the early 80s, disaster were seen as random events requiring attention and the risk that blended with the threat, was addressed to the extent that it affected the processes of urbanization. A noticeable change has been reported associated with the occurrence of major tragedies in Colombia and supported enactment of legislation to introduce new regulations and leading to land use according to planning process, especially in urban areas. This process can identify changes in the conception of risk, the importance given to environmental issues, the alternatives considering intervention, the process of participation and the interinstitution work.

  15. Caracterización molecular con marcadores RAM de árboles nativos de Psidium guajava (guayaba) en el Valle del Cauca

    OpenAIRE

    Sanabria Hilsy L

    2006-01-01

    COMPENDIO Se evaluaron 53 accesiones de Psidium guajava Valle del Cauca, utilizando marcadores microsatélites aleatorios RAM. Los seis primeros usados generaron 74 bandas polimórficas, con pesos moleculares de 100 a 700 pb. El porcentaje de loci Polimórfico en cinco de los primeros resultó ser del 100% (P < 0.05) y la diversidad génica de 0.4386. El Análisis de Varianza Molecular (AMOVA) reveló que el 64.51% de la varianza total haplotípica contabiliza para variaciones dentro de...

  16. Modelo explicativo del conocimiento organizacional en la Corporación Autónoma Regional del Valle del Cauca - CVC

    OpenAIRE

    Carlos Hernán González Campo; Henry Antonio Saltaren Quiñónez; Nubia Mercedes Arenas Quiñones

    2010-01-01

    El conocimiento es el activo más importante que posee una organización, en particular para las Autoridades Ambientales, el presente artículo de investigación tiene como objetivo presentar un modelo explicativo del conocimiento organizacional en la Corporación Autónoma Regional del Valle del Cauca - CVC y el diseño de una propuesta para la gestión de conocimiento organizacional, ambos resultantes de la investigación interpretativa basada en el paradigma constructivista utilizados en la meto...

  17. Evaluación agroindustrial de los aceites esenciales de algunas plantas aromáticas en condiciones del Valle del Cauca

    OpenAIRE

    Luís F. Saldarriaga; Gina M. Sánchez; Harlen Torres; Manuel Sánchez; Carmen R Bonilla

    2007-01-01

    La composición química del aceite esencial obtenido a partir de las hojas de varias plantas aromáticas en condiciones del Valle del Cauca, fue analizada mediante GC/MS. Los compuestos químicos más representativos fueron la Elemicina (40.11%) en Artemisia dracunculus Linn, el ß-Himachaleno (53.98%) en Franseria artemisioides Willd, trans-ß-Cariofileno (22.18) en Salvia officinalis Linn, a-Bisabolol (15.79%) en Lippia dulcis Frev y 1,8- Cineol (Eucaliptol) (23.34%) en Occimun ...

  18. Guidelines for curriculum reform in the University of Cauca's speech-language therapy programme, 2004. Diagnostic phase LINEAMIENTOS PARA UNA REFORMA CURRICULAR EN EL PROGRAMA DE FONOAUDIOLOGÍA DE LA UNIVERSIDAD DEL CAUCA 2004. FASE DIAGNÓSTICA

    Directory of Open Access Journals (Sweden)

    Nora Aneth Pava Ripoll

    2009-01-01

    Full Text Available Background. The article presented here gives the results of research entitled, “Curriculum reform of the academic speech therapy programme at the University of Cauca - diagnostic phase”. Curriculum reform emerges from the need for growing convergence between knowledge and action in order to respond with greater precision and certainty to social, economic, political and human realities. It is recognised that ongoing adjustments should be made to respond to the disciplines’ dynamic evolution. Objective. Theoretical and practical bases are thus proposed; they are tailored to the context of curriculum reform regarding the University of Cauca’s speech therapy programme so that ideas and strategies guiding the meaningfulness of the curriculum may be proposed. Materials and methods.Using qualitative (evaluative research and documentary analysis led to rapprochement with the players involved (teachers and students. The research was carried out with 20 professors and 53 students from the University of Cauca’s speech therapy programme. A serious diagnosis was thereby achieved that dealt with analysing academic practice, evaluation systems, the concepts of training and curriculum, the models of pedagogic formation, predominant theoretical trends, the educational plan and relationships between teachers and students. Results. A technical concept of training emphasising knowledge-based humanistic and comprehensive concepts was outlined in this research. The concept of curriculum was separated from comprehensive training and limited to content. Pedagogic practice was focused on the teacher, thus favouring teaching rather than learning. Conclusions. The academic practices of the players involved in a higher education programme should be transformed so that curriculum reform can be contemplated; real positioning of cultures and academic communities should be made. Moreover, the curriculum should always be thought of as being a process of ongoing

  19. COMERCIO DE FAUNA SILVESTRE EN COLOMBIA WILDLIFE TRADE IN COLOMBIA

    Directory of Open Access Journals (Sweden)

    Néstor Javier Mancera Rodríguez

    2008-12-01

    Full Text Available Este trabajo ofrece un panorama sobre las actividades relacionadas con el comercio de bienes derivados de las especies de fauna silvestre en Colombia, abordando el tema desde el desarrollo que ha tenido su actividad productiva, el aprovechamiento extractivo, así como la dinámica de su comercio legal e ilegal en el país y el desarrollo y promoción de alternativas productivas sustentadas en su aprovechamiento. Se analizó la información secundaria de entidades como el Ministerio de Ambiente, Vivienda y Desarrollo Territorial, las Corporaciones Autónomas Regionales y Autoridades Ambientales Urbanas, el Instituto Colombiano de Desarrollo Rural-INCODER, las Autoridades Policiales, los Institutos de Investigación, el Departamento Administrativo Nacional de Estadística, la Dirección de Impuestos y Aduanas Nacionales-DIAN, el Ministerio de Comercio, Industria y Turismo, y PROEXPORT. entre otras. En Colombia, el comercio de especies de fauna silvestre está centrado principalmente en la extracción de ejemplares de forma ilegal, lo cual ha generado desequilibrios en las poblaciones naturales y ha repercutido en el deterioro de la dinámica de los ecosistemas. El comercio legal de fauna silvestre se basa en la producción de unas pocas especies entre las que se destacan la babilla (Caiman crocodilus, el chigüiro (Hydrochaeris hydrochaeris, cerca de 200 especies de peces ornamentales y en menor medida el lobo pollero (Tupinambis nigropunctatus, la iguana (Iguana iguana, la boa (Boa constrictor, escarabajos (Dynastes hercules y mariposas. En el país no se tiene información exacta sobre el número de incautaciones realizadas en los operativos de control al tráfico ilegal de fauna, y no existe un conocimiento de la dinámica de este comercio ilegal.This work offers a current view on the activities related to the trade of derived from the wildlife species in Colombia, approaching the topic from the development that has had its productive activity

  20. El Quindio Colombia Earthquake, January 25, 1999

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The El Quindio earthquake was one of the most destructive natural disasters to have occurred in Colombia in recent years. Long lasting economic and social impacts...

  1. Social Networks in Silicon Valley

    Institute of Scientific and Technical Information of China (English)

    Joseph Leu

    2006-01-01

    @@ Social network is a dominant, distinguishing characteristic of Silicon Valley. Because innovation entails coping with a high degree of uncertainty,such innovation is particularly dependent on networks.

  2. Session: Long Valley Exploratory Well

    Energy Technology Data Exchange (ETDEWEB)

    Tennyson, George P. Jr.; Finger, John T.; Eichelberger, John C.; Hickox, Charles E.

    1992-01-01

    This session at the Geothermal Energy Program Review X: Geothermal Energy and the Utility Market consisted of four presentations: ''Long Valley Exploratory Well - Summary'' by George P. Tennyson, Jr.; ''The Long Valley Well - Phase II Operations'' by John T. Finger; ''Geologic results from the Long Valley Exploratory Well'' by John C. Eichelberger; and ''A Model for Large-Scale Thermal Convection in the Long Valley Geothermal Region'' by Charles E. Hickox.

  3. Cuatro especies nuevas de Cyclanthaceae de Colombia

    OpenAIRE

    Tuberquia Dino

    1997-01-01

    Four new species of Cyclanthaceae, Asplundia trilobulata, A. gigantea, Dicranopygium arusisense and D. odoratum, from the Cabo Corrientes area on the Pacific Coast of Colombia, are described and illustrated. Their taxonomic status and probable relationships are dicussed.Se describen e ilustran cuatro especies nuevas de Cyclanthaceae, Asplundia trilobulata, A. gigantea, Dicranopygium arusisense y D. odoratum, de la región del Cabo Corrientes en la Costa Pacífica de Colombia. Se discute su posi...

  4. CLILL: COLOMBIA LEADING INTO CONTENT LANGUAGE LEARNING

    OpenAIRE

    Monica Rodriguez Bonces

    2011-01-01

    Content and Language Integrated Learning (CLIL) has been adopted by many nations as a methodology to reach bilingualism. Nonetheless, the implementation of CLIL in Colombia goes beyond teaching a core area in English. It implies a long process, including multiple factors to achieve success. This article presents a general background of the process of bilingualism in Colombia and how different kinds of institutions approach this governmental policy through a critical reflection. The paper pres...

  5. Climate protection in Colombia. An overview

    International Nuclear Information System (INIS)

    The effects of the climatic change in Colombia includes the increase of sea level at the Caribbean and the Pacific coast, the increase of temperature, the increase of precipitation, effecting the agricultures, the ecosystems, the water supply and the public health. Colombia has already started specific programs, adaptation measures with respect to the effects of the climatic change, reduction of the greenhouse gas emissions and projects with respect to the reduction of emissions due to deforestation and degradation.

  6. Demobilized Women Combatants: Lessons from Colombia

    OpenAIRE

    Giraldo, Saridalia

    2012-01-01

    In Colombia, a country with one of the longest civil wars in the world, women combatants return to civil society in the midst of ongoing tension. In this transition, women suffer triple difficulties: the reaction of their home communities; hostility from armed illegal groups still engaged in conflict, and disregarding from the government itself. What accounts for these obstacles? First, in a patriarchal society such as Colombia, demobilized women face the denigration of their community which ...

  7. Aditions to the flora of colombia

    OpenAIRE

    Hermann, J. F.

    2012-01-01

    During the first four months of 1944 while the writer was engaged in exploration for sources of rotenone in Colombia, principally in the Eastern Llanos, some opportunity was found for general botanical collecting. Although both time and facilities for this purpose were limited to the extent that somewhat less than 500 numbers were obtained, these collections included a few undescribed plants and several species apparently not so far reported from Colombia. In addition to the two novelt...

  8. Barriers to combating human trafficking in Colombia

    OpenAIRE

    Wilcox, Daniel Joseph

    2015-01-01

    Approved for public release; distribution is unlimited Despite international and domestic policies and programs intended to combat human trafficking, Colombia remains one of the countries with the highest instances of human trafficking in the Western Hemisphere. Factors contributing to human trafficking in Colombia, such as internal violence and displacement, drug trafficking, a weak central government, and widespread corruption, have overpowered what energies the government marshaled agai...

  9. Caracterización morfológica de 29 introducciones de Physalis peruviana L. de la colección de trabajo de la Universidad Nacional de Colombia Sede Palmira Morphological characterization of 29 introductions of Physalis peruviana L. from the collection of the National University of Colombia at Palmira

    Directory of Open Access Journals (Sweden)

    Carlos Eduardo Madriñán Palomino

    2011-01-01

    Full Text Available Physalis peruviana L. (uchuva), de la familia Solanaceae, es una de las frutas más importantes en términos de exportaciones para Colombia debido a sus propiedades nutricionales y medicinales. En nuestro país la caracterización morfológica y evaluación de los bancos de germoplasma ha comenzado a implementarse. El objetivo de la presente investigación es la caracterización morfológica mediante descriptores discriminantes de 29 Introducciones de uchuva representativas de la colección de trabajo de la Universidad Nacional de Colombia sede Palmira. El trabajo se realizó en la Reserva Natural "La Albecia", vereda Regaderos, corregimiento de Aují, Municipio de El Cerrito - Valle del Cauca, a una altura de 1945 msnm, temperatura de 18-20°C, humedad relativa 70-80% y precipitación anual de 900-1200 mm. El ensayo se desarrolló en tres fases. En la primera se escogieron 29 introducciones representativas de la colección de trabajo de uchuva (CTU). En la segunda se estableció el ensayo bajo un diseño experimental de bloques completos al azar (BCA) y en la última fase se recopiló la información mediante descriptores cuantitativos y cualitativos previamente seleccionados. Se obtuvo un dendrograma a partir del análisis de conglomerado de varianza mínima de Ward, que determinó cinco grupos para las variables cualitativas. El tercer grupo explica el mayor grado de similitud entre las 29 introducciones evaluadas, con un porcentaje del 27.58. La mayor variabilidad estuvo relacionada con los caracteres del fruto: peso con y sin cáliz, grados Brix y diámetros polares y ecuatoriales.Physalis peruviana L. (gooseberry) Solanaceae family, is one of the most important to export for Colombia because its nutritional and medicinal properties. In Colombia, the morphological characterization and evaluation of germplasm banks has begun to be implemented. This research aims the morphological characterization by using descriptors able to discriminate 29

  10. A new colorful species of Pristimantis (Anura: Craugastoridae) from the eastern flank of the Cordillera Central in Colombia .

    Science.gov (United States)

    Rivera-Prieto, Diego A; Rivera-Correa, Mauricio; Daza, Juan M

    2014-01-01

    We describe a new species of Pristimantis from the humid forests on the eastern flank of the northern Cordillera Central in Colombia (6º 23' 19.3554" N, 75º 1' 24.0594" W; ca. 1150 m.a.s.l.). Pristimantis jaguensis sp. nov. is characterized by an extraordinary variation in color and is readily distinguished from congeneric species by lacking nuptial pads, discoidal fold and conical calcar tubercles; flanks and belly white to cream without blotches as well as iris yellow ocher to copper with thick brown reticulation and cream sclera. Molecular phylogenetic analyses recovered the new species in a clade with species mostly distributed in Ecuador. Our finding suggests that new taxa can still be discovered in the Middle Magdalena River valley of Colombia despite the extensive sampling this region has received during the last decades.  PMID:25543734

  11. Synthetic River Valleys

    Science.gov (United States)

    Brown, R.; Pasternack, G. B.

    2011-12-01

    The description of fluvial form has evolved from anecdotal descriptions to artistic renderings to 2D plots of cross section or longitudinal profiles and more recently 3D digital models. Synthetic river valleys, artificial 3D topographic models of river topography, have a plethora of potential applications in fluvial geomorphology, and the earth sciences in general, as well as in computer science and ecology. Synthetic river channels have existed implicitly since approximately the 1970s and can be simulated from a variety of approaches spanning the artistic and numerical. An objective method of synthesizing 3D stream topography based on reach scale attributes would be valuable for sizing 3D flumes in the physical and numerical realms, as initial input topography for morphodynamic models, stream restoration design, historical reconstruction, and mechanistic testing of interactions of channel geometric elements. Quite simply - simulation of synthetic channel geometry of prescribed conditions can allow systematic evaluation of the dominant relationships between river flow and geometry. A new model, the control curve method, is presented that uses hierarchically scaled parametric curves in over-lapping 2D planes to create synthetic river valleys. The approach is able to simulate 3D stream geometry from paired 2D descriptions and can allow experimental insight into form-process relationships in addition to visualizing past measurements of channel form that are limited to two dimension descriptions. Results are presented that illustrate the models ability to simulate fluvial topography representative of real world rivers as well as how channel geometric elements can be adjusted. The testing of synthetic river valleys would open up a wealth of knowledge as to why some 3D attributes of river channels are more prevalent than others as well as bridging the gap between the 2D descriptions that have dominated fluvial geomorphology the past century and modern, more complete, 3D

  12. Silicon Valley Lifestyle

    Institute of Scientific and Technical Information of China (English)

    Joseph Leu

    2005-01-01

    @@ As we embrace the rapid developments of the new media age,competitiveness in the field of internet and computer technology is an increasingly crucial factor in stimulating new business,jobs and new industry in the region.Accelerating advancements in new media,internet,software and computer technologies offer new commercial opportunities and sources of economic revenue. Silicon Valley has been a model of the new age since its existence.While the dream place not only has a unique business model,but also has a very special lifestyle.

  13. LA MODELACION NUMERICA COMO HERRAMIENTA PARA LA EXPLORACION HIDROGEOLÓGICA Y CONSTRUCCION DE MODELOS CONCEPTUALES (Caso de aplicación: Bajo Cauca Antioqueño

    Directory of Open Access Journals (Sweden)

    TERESITA BETANCUR

    2009-01-01

    Full Text Available Además de constituir una herramienta de simulación, los modelos numéricos en hidrogeología ofrecen un camino para avanzar en el entendimiento de sistemas acuíferos. Los modelos numéricos pueden tener carácter exploratorio y así, pueden acompañar la tarea de construcción de un modelo conceptual desde el momento en que se inicia la recolección de información, en el curso de su interpretación, y cada vez que se obtienen nuevos datos o se aplican nuevos análisis para la validación de un sistema hidrogeológico. El ejercicio de modelación numérica propuesto para el sistema acuífero del Bajo Cauca antioqueño, tiene carácter exploratorio. La información recopilada desde el año 2003, fue sucesivamente incorporada en tareas de modelación numérica nutriendo el modelo conceptual regional con el que hoy se cuenta. En este trabajo, seemprendió la tarea de modelación numérica con el propósito de ayudar, a interpretar la información y la dinámicade flujo subterráneo del Bajo Cauca antioqueño.

  14. Residualidad del ácido sulfúrico aplicado como enmienda, y calculado de acuerdo con la CIC y con la suma de bases, sobre la estabilidad de los agregados en dos suelos salino-sódicos de la zona de Palmaseca, Valle del Cauca Residualidad del acido sulfúrico aplicado como enmienda, y calculado de acuerdo con la c 1c y con la suma de bases, sobre la estabilidad de los agregados en dos suelos salino-sódicos de la zona de palma seca, Valle del Cauca

    Directory of Open Access Journals (Sweden)

    Charry Calle Jairo

    1988-12-01

    Full Text Available Los dos suelos salino-sódicos se cultivaron sucesivamente con algodón (Gossypium hirsutum var. Gossica P-21, soya (Glycine max var. ICA- Tunía y fríjol (Phaseolus vulgaris var. ICA- Gualí. La estabilidad de los agregados para los suelos, tratamientos y cultivos, se comparó calculando el área localizada debajo de cada una de las curvas aditivas porcentuales de los agregados, entre los parámetros menor de 025 mm y 0.42-0.84 mm.Residuality of sulfuric acid applied as amendment and calculated according to CEC and Sum of Exchangeable Bases (Ca, Mg, Na and K on the aggregate stability of two saline-sodic soils from Palmaseca zone , Cauca Valley, successively cultivated in cotton (Gossypium hirsutum var. Gossica P- 211. soybean (Glycine max var. ICA Tunía and bean (Phaseolus vulgaris var. ICA-Gualí was studied. The aggregate stability for two soils, treatments and crops, was compared by calculating the area located below each one of the accumulative percentage curves of aggregates, between less than 025 mm and 0.42-084 mm parameters. The results showed: A percent increase up to 56% in the aggregate stability of both soils, in treatments calculated according to CEC cultivated in soybean, and Sum of Exchangeable Bases cultivated in bean. The characteristic roots do not have a pronounced effect on aggregation. The initial and final chemical analysis of soils cultivated in cotton, bean and soybean showed in general, a 90 to 98% reductions of levels of sulphate, exchangeable sodium and exchangeable sodium percentage.

  15. La tenencia de la tierra en universos campesinos. Distribución, transformaciones y luchas desarrolladas en Cajibío (Colombia, 1973-2008

    Directory of Open Access Journals (Sweden)

    Diego Andrés Lugo Vivas

    2011-07-01

    Full Text Available En el presente trabajo se analizarán las transformaciones en la distribución y uso de la tierra, así como las luchas sociales que alrededor de la propiedad rural se han desarrollado en el municipio de Cajibío (Cauca, Colombia durante el periodo 1973-2008. Centraremos nuestro interés en la tierra y en sus principales transformaciones, pues además de ser una de las mejores estrategias para aproximarnos a la realidad de una sociedad campesina, nos permite señalar algunos de los fenómenos de recomposición económica y política más fuertes registrados en este municipio. Para ello hemos recurrido a un trabajo estadístico con cifras provenientes del Instituto Geográfico Agustín Codazzi (IGAC, a un trabajo con fuentes documentales consignadas en cuatro archivos estatales de Cajibío y a entrevistas en profundidad con líderes, habitantes y funcionarios del municipio.

  16. A comparative study of oral health attitudes and behavior using the Hiroshima University - Dental Behavioral Inventory (HU-DBI) between dental and civil engineering students in Colombia

    Science.gov (United States)

    Jaramillo, Jorge A.; Jaramillo, Fredy; Kador, Itzjak; Masuoka, David; Tong, Liyue; Ahn, Chul; Komabayashi, Takashi

    2014-01-01

    The aim of this study was to use the Hiroshima University - Dental Behavioral Inventory (HU-DBI) to compare oral health attitudes and behavior of dental and civil engineering students in Colombia. The HU-DBI's survey consisting of twenty dichotomous responses (agree-disagree) regarding tooth brushing, was completed at University Antonio Narino for the dental students and the University of Cauca for the civil engineering students. The Spanish version of the HU-DBI questionnaire was taken by 182 of 247 dental students and 411 of 762 engineering students. The data was-statistically analyzed by the chi-square test and backward logistic regression. Compared to the engineering students, the dental students were more likely to agree with questions such as “I am bothered by the color of my gums”(OR = 2.2, 95% CI: 1.3-3.7),“I think I can clean my teeth well without using toothpaste” (OR = 3.0, 95% CI: 1.5-5.9), “I have used a dye to see how clean my teeth are” (OR = 2.9, 95% CI: 1.9-4.3), and “I have had my dentist tell me that I brush very well” (OR = 2.0, 95% CI: 1.3-3.1). The dental education curriculum in a dental school compared to a civil engineering school in Colombia indicated that a three-phase curriculum in didactics and clinics increased oral health attitudes and behavior from entry to graduation. PMID:23485597

  17. Predicted altitudinal shifts and reduced spatial distribution of Leishmania infantum vector species under climate change scenarios in Colombia.

    Science.gov (United States)

    González, Camila; Paz, Andrea; Ferro, Cristina

    2014-01-01

    Visceral leishmaniasis (VL) is caused by the trypanosomatid parasite Leishmania infantum (=Leishmania chagasi), and is epidemiologically relevant due to its wide geographic distribution, the number of annual cases reported and the increase in its co-infection with HIV. Two vector species have been incriminated in the Americas: Lutzomyia longipalpis and Lutzomyia evansi. In Colombia, L. longipalpis is distributed along the Magdalena River Valley while L. evansi is only found in the northern part of the Country. Regarding the epidemiology of the disease, in Colombia the incidence of VL has decreased over the last few years without any intervention being implemented. Additionally, changes in transmission cycles have been reported with urban transmission occurring in the Caribbean Coast. In Europe and North America climate change seems to be driving a latitudinal shift of leishmaniasis transmission. Here, we explored the spatial distribution of the two known vector species of L. infantum in Colombia and projected its future distribution into climate change scenarios to establish the expansion potential of the disease. An updated database including L. longipalpis and L. evansi collection records from Colombia was compiled. Ecological niche models were performed for each species using the Maxent software and 13 Worldclim bioclimatic coverages. Projections were made for the pessimistic CSIRO A2 scenario, which predicts the higher increase in temperature due to non-emission reduction, and the optimistic Hadley B2 Scenario predicting the minimum increase in temperature. The database contained 23 records for L. evansi and 39 records for L. longipalpis, distributed along the Magdalena River Valley and the Caribbean Coast, where the potential distribution areas of both species were also predicted by Maxent. Climate change projections showed a general overall reduction in the spatial distribution of the two vector species, promoting a shift in altitudinal distribution for L

  18. A distinctive new subspecies of Scytalopus griseicollis (Aves, Passeriformes, Rhinocryptidae from the northern Eastern Cordillera of Colombia and Venezuela

    Directory of Open Access Journals (Sweden)

    Jorge Avendaño

    2015-06-01

    Full Text Available We describe a new subspecies of Pale-bellied Tapaculo Scytalopus griseicollis from the northern Eastern Cordillera of Colombia and Venezuela. This form differs diagnosably in plumage from described subspecies S. g. griseicollis and S. g. gilesi and from the latter in tail length. It is also differentiated non-diagnosably in voice from both these populations. Ecological niche modelling analysis suggests that the new subspecies is restricted to the Andean montane forest and páramo north of both the arid Chicamocha valley and the Sierra Nevada del Cocuy.

  19. A distinctive new subspecies of Scytalopusgriseicollis (Aves, Passeriformes, Rhinocryptidae) from the northern Eastern Cordillera of Colombia and Venezuela.

    Science.gov (United States)

    Avendaño, Jorge Enrique; Donegan, Thomas M

    2015-01-01

    We describe a new subspecies of Pale-bellied Tapaculo Scytalopusgriseicollis from the northern Eastern Cordillera of Colombia and Venezuela. This form differs diagnosably in plumage from described subspecies Scytalopusgriseicollisgriseicollis and Scytalopusgriseicollisgilesi and from the latter in tail length. It is also differentiated non-diagnosably in voice from both these populations. Ecological niche modelling analysis suggests that the new subspecies is restricted to the Andean montane forest and páramo north of both the arid Chicamocha valley and the Sierra Nevada del Cocuy. PMID:26085800

  20. Estimation of the structural stability of two soils of the south of Colombia with different types of management. Estimación de la estabilidad estructural de dos suelos al sur de Colombia con diferentes tipos de manejo.

    Directory of Open Access Journals (Sweden)

    Carrillo Jesús

    2008-03-01

    Full Text Available The study carried out in two localities in zones to the north of the department of the Cauca Colombia, random a design of blocks with six treatments was used: 1. bare plots (reference; 2. Rotation crops + organic fertilizer. (Farming; 3. Rotation from improved praire. (Minimum till + chemical fertilizer; 4. Conventional rotation. (Chemical Farming + chemical fertilizer; 5. Rotation crops + legumes. (Chemical Farming + chemical fertilizer; 6. Rotation from improved praire. (Chemical Farming + chemical fertilizer. These treatments established as run–off plots during eight years were exposed without vegetation to the impact of rains during 10 months, which were compared to the reference plots whose original to praire was 15 years old. To evaluate the structural stability the test of turbidimetría was used. The results appeared like the area under the curve (AUC for the dispersion variable (%, which was lower for the aggregates taken from the surface of virgin soils (Treatment 1 and rotation of crops plus minimum till (Treatment 3. The rotation treatment with addition of organic chicken manure (3 t/ha and covers of legumes presented the higher values.En el estudio que se realizó en dos localidades de la zona de ladera al norte del departamento del Cauca, Colombia, se utilizó un diseño de bloques al azar con seis tratamientos: 1. Parcelas descubiertas (referencia, 2. Rotación cultivos + abono orgánico (labranza; 3. Rotación a partir de pradera mejorada (labranza mínima + abono químico; 4. Rotación convencional (labranza + abono químico; 5. Rotación cultivos + leguminosas (labranza + abono químico; 6. Rotación a partir de pradera mejorada (labranza + abono químico. Los tratamientos se establecieron como parcelas de escorrentía durante ocho años y luego se sometieron sin vegetación a la exposición de las lluvias durante 10 meses y se

  1. Evaluación de seis abonos verdes en un vertisol ústico en condiciones del valle del cauca

    OpenAIRE

    Bonilla C. C. R.; Sánchez M. S.; Salamanca W. F.

    2006-01-01

    En el Centro Experimental de la Universidad Nacional de Colombia-Sede Palmira, en un diseño de bloques completos al azar, se evaluaron seis tratamientos con tres repeticiones. (Cajanus cajan guandul arbóreo y arbustivo; Canavalia ensiformis, fríjol Canavalia; Cynodon niemfuensis, pasto estrella; Zea mays, Maíz y Cucúrbita moschata, zapallo). El pasto estrella y el zapallo fueron cultivos previos al ensayo; los otros materiales se sembraron por semilla a 50 cm en cuadro y se incorporaron al su...

  2. COMPORTAMIENTO ESTRUCTURAL DE LOS ÁCIDOS HÚMICOS OBTENIDOS DE UN SUELO ANDISOL DEL DEPARTAMENTO DEL CAUCA

    Directory of Open Access Journals (Sweden)

    Carmen Mosquera

    2008-04-01

    Full Text Available Las sustancias húmicas del suelo constan de una mezcla heterogénea de compuestos, en la que cada fracción (ácidos húmicos, ácidos fúlvicos y huminas está constituida por moléculas de tamaños diferentes, y su estructura depende considerablemente tanto de los materiales orgánicos presentes en el suelo, como de las diferentes condiciones ambientales. Este estudio, empleó técnicas de espectroscopía ultravioleta – visible (relación E4/E6, infrarroja con transformada de Fourier  y resonancia magnética nuclear 13C (RMN para identificar la estructura química de una muestra de ácidos húmicos (AH provenientes de un suelo agrícola del departamento del Cauca, y los cambios que dicha estructura presenta en diferentes medios de reacción, como en anhídrido acético y alcohol absoluto. Los AH se obtuvieron a partir de la materia orgánica del suelo, mediante una separación granulométrica del suelo y una extracción sucesiva empleando tres soluciones básicas: tetraborato de sodio (0,05M, pirofosfato de sodio (0,05M e hidróxido de sodio (0,1M, purificándolos a través de tratamientos ácidos HCl-HF 1%, centrifugación de alta velocidad y diálisis. La relación E4/E6 mostró cambios en el grado de condensación de los AH en los diferentes medios de reacción, corroborándose dichos cambios por el aparecimiento de nuevas bandas o disminución y aumento de otras en los espectros infrarrojos, y por los cambios apreciables en las bandas y distribución de la intensidad en las diferentes regiones de los espectros de resonancia magnética nuclear 13C. Esta investigación  muestra cambios químicos y estructurales de los ácidos húmicos extraídos de un suelo agrícola, que  concuerdan con diferentes investigaciones efectuadas en este campo.

  3. Niveles y efectos de la consanguinidad en variables de comportamiento durante la tienta y la lidia en dos ganaderías de reses bravas de Colombia Levels and effects of inbreeding on performance traits during tempt and fight from two fighting bull farms in Colombia

    Directory of Open Access Journals (Sweden)

    David Calero Quintero

    2010-04-01

    Full Text Available En el estudio se estimaron los niveles y las tendencias de la consanguinidad en variables de comportamiento durante la tienta y la lidia en dos ganaderías colombianas de reses bravas: Ernesto González Caicedo (EGC - Popayán, Cauca, encaste Santacoloma; y Guachicono (GUA - Bolívar, Cauca, Colombia, encaste Parladé. Se analizaron los pedigríes de 2.094 animales EGC nacidos entre 1918 y 2007 y 963 GUA, nacidos entre 1928 y 2005. Los coeficientes de consanguinidad de los bovinos se obtuvieron usando el Proc Inbreed del programa SAS v. 9.1.3. Se estudiaron además de las notas del ganadero, las variables propias y comunes a las faenas de tienta y de lidia. Los promedios y las desviaciones estándar de la consanguinidad en EGC y GUA fueron 4.9±6.6 y 4.2±4.2% para todos los animales, 4.5±5.8 y 6.0±3.4% para la última época estudiada, y 10.6±5.8 y 6.5±3.5% considerando sólo los consanguíneos. Se encontraron efectos positivos en las variables responsables de ‘toreabilidad’ y estilo, y depresivos en la fuerza de los animales. La consanguinidad actual en ambas ganaderías es mediana, sin embargo debe diseñarse un plan de apareamiento.This study was carried out to estimate levels and trends of the inbreeding on behavior variables during the tempt and fight from two fighting farms: Ernesto González Caicedo (EGC and Guachicono (GUA with strains Santacoloma, and Parladé respectively, located on Popayán and Bolívar, municipalities of the Cauca Department, Colombia. The pedigrees of 2094 EGC animals born between 1918 and 2007, and 963 GUA animals born between 1928 and 2005 were analyzed. Inbreeding coefficients of the cattle were obtained using PROC INBREED from the software SAS v. 9.1.3. In addition to the breeder’s notes the own variables, dealing and common to the tempt and fight task were studied. The average and standard deviations of the blood relationship during the total and the last time studied for the cattle raising EGC and

  4. 27 CFR 9.58 - Carmel Valley.

    Science.gov (United States)

    2010-04-01

    ... 27 Alcohol, Tobacco Products and Firearms 1 2010-04-01 2010-04-01 false Carmel Valley. 9.58... Carmel Valley. (a) Name. The name of the viticultural area described in this section is “Carmel Valley.” (b) Approved maps. The approved maps for determining the boundary of the Carmel Valley...

  5. Tpm implementation impact in companies´s competitivity in the metropolitan region of aburra’s valley and near east

    OpenAIRE

    Arango Serna, Martin Dario; Zapata Cortes, Julian Andrés; Alzate Lopez, Juan Felipe

    2012-01-01

    Best practices methodologies have been used by different companies as competitive growing tools in a globalized market. In Colombia, particularly at Aburra’s Valley Metropolitan Area (AMVA) and near east can be noticed that TPM (Total Productive Management) had been adopted as a competitive support tool. This article evaluates the TPM implementation impact in different competitiveness variables for the companies that are working on it at the AMVA and near east, finding that there is not a cle...

  6. Relationship between two shading systems of coffee and some properties of the soil in the plateau of Popayán, Colombia Relación entre dos sistemas de sombrío de café y algunas propiedades del suelo en la meseta de Popayán, Colombia

    Directory of Open Access Journals (Sweden)

    Sadeghian Siavosh

    2006-12-01

    Full Text Available

    At Figueroa a small town of the municipality of Popayán, Department of Cauca, Colombia, in eight farms located between 1750 and 1800 meters above sea level, the microbial activity in the plant rizosphere of the Colombian cof fee variety was estimated to relate it with some properties of the soil and shading was estimated. Soil samples were taken 0 and 10 cm during in the grain harvest season (june/05 to determine physical, chemical and biological properties of the soil. In addition, three more samples were collected in july, august and october, to estimate biological activity. In soils under partial shade, organic matter content was higher, as well as humidity, water retention capacity, and nitrogen, phosphorus, potassium, calcium, and manganese availability. Statistically higher differences in respiration and microbial biomass were found during the summer season (august/05 and lower in the rainy seasons (october /05. When comparing the different farms, the organic matter content a direct relationship was found. The microbial carbon was 0.5% and 0.9% of the total carbon present in the organic matter of the studied soil.

    Key words: Biological respiration; microbiology; biomass, varieties; Colombia; coffee.

    En la vereda Figueroa, municipio de Popayán, departamento del Cauca, en ocho fincas ubicadas entre 1.750 y 1.850 m.s.n.m., se estimó la actividad microbiana en la rizósfera de plantas de café variedad Colombia para relacionarla con algunas propiedades del suelo y el sistema de sombrío empleado. Entre 0y10 cm de profundidad y en época de cosecha de grano (junio/05 se tomaron muestras para determinar algunas propiedades físicas, químicas y biológicas del suelo. Adicionalmente, tres muestreos más en julio, agosto y octubre, para estimar la actividad biológica durante el tiempo. En suelos bajo sombrío medio fue mayor el contenido de materia orgánica, la capacidad de retención de humedad y la disponibilidad de nitr

  7. Nuclear Medicine week in Colombia

    International Nuclear Information System (INIS)

    During the week of 6-12 October 2003 the IAEA organized a Research Coordination Meeting on 'Relationship between lower Respiratory Tract Infection, Gastroesophageal reflux and bronchial Asthma in children' at Hospital San Ignacio in Bogota. Besides there were four workshops in Bogota; workshops on Bone infection and Bone scan in Pediatric ortopaedics at Hospital Militar and Fundacion CardioInfantil, a workshop for Nuclear Medicine Technologists and a workshop on Sentinel Lymph Node mapping and Surgical Gamma Probe Application at Institute of Oncology. A nuclear cardiology workshop was organized in Medellin, and finally crowning them all was the 9th Congress of the Colombian Association of Nuclear Medicine at Cali from 10-12 October, 2003; probably the largest and best Colombian nuclear medicine congress every held in the country. A workshop was also organized in Cali for nuclear medicine technologists in conjunction with the Annual Convention. It was a mix of IAEA's Technical Cooperation and Regular Budget activities along with the activities of Colombian Association of Nuclear Medicine, bringing in absolute synergy to galvanize the entire nuclear medicine community of the country. The week saw nuclear medicine scientists from more than 20 IAEA Member States converging on Colombia to spread the message of nuclear medicine, share knowledge and to foster International understanding and friendship among the nuclear medicine people of the world

  8. en Colombia, 2002-2012

    Directory of Open Access Journals (Sweden)

    Camilo Tamayo

    2014-01-01

    Full Text Available El presente artículo ofrece una mirada interpretativa de las principales ten- dencias que han guiado el estudio sobre la relación entre los medios de co- municación, el periodismo y la confrontación armada en Colombia entre 2002 y 2012. ¿Cuál es la agenda investigativa que la academia, las organiza- ciones sociales y de periodistas han elaborado sobre esta problemática? El estudio reúne 89 trabajos que se pueden agrupar en tres tendencias prin- cipales: las miradas al oficio: riesgos, libertades y garantías para informar en medio del conflicto; las agendas del conflicto: fuentes, lenguajes y pú- blicos de la información, y los escenarios emergentes: (posconflicto, víc- timas y memoria. El artículo cierra con 12 aprendizajes que resultaron de la interpretación de las tendencias encontradas, y que pretenden propiciar puntos de atención sobre los lugares de mirada del periodismo, la academia y las organizaciones de la sociedad en contextos de conflicto armado.

  9. The coal sector in Colombia

    International Nuclear Information System (INIS)

    Inside the plan of development of the sub-sector coal, implemented by the Ministry of Mines and Energy, has like one of the objectives to achieve that in the year 2001, this is the energy second in order of importance for the consumption of the country, overcome alone for the petroleum and their derived. The consumption of this energy in Colombia has shown a stable behavior in the last 15 years, period in which incursions of the coal have not been observed in new markets of the national economy, having a growth of so single 2.1% a year. Inside the plan of development of the sub-sector coal, implemented by the Ministry of Mines and Energy, the coal is had as one of the objectives to achieve that in the year 2001, this it is the energy second in order of importance for the consumption of the country, overcome alone for the petroleum and their derived. The author also refers to the role of the state; the coal in the national economy and it shows charts related with the exports and demand, among other items

  10. Postales audiovisuales. exotismo, turismo y pa’ colombia

    Directory of Open Access Journals (Sweden)

    María Sol Barón Pino

    2011-12-01

    Full Text Available Pa’ Colombia (Carlos Lersundy, 1971-1979 es un ensayo audiovisual producto de un contexto en el cual, desde diferentes acercamientos, se estimuló la producción cinematográfica nacional, mientras se difundía la imagen del país a través de políticas para promover el sector turístico que generarían un amplio espectro de imaginarios exóticos y folclóricos sobre Colombia. El registro directo de Lersundy, a través del ejercicio de viaje que dio forma al cortometraje Pa’ Colombia, contrasta con la difusión visual generada por la Corporación Nacional de Turismo, y permite plantear una lectura crítica enmarcada dentro del panorama cinematográfico colombiano de la década de los setentas.

  11. The century of the Petroleum in Colombia

    International Nuclear Information System (INIS)

    A recount of the big changes is made with hydrocarbons in Colombia during the X X century. The X X century it meant everything for Colombia in oil matter. In this century it took off and it consolidated their industry of the hydrocarbons and with her great part of the industrialization process and development of the country. It is undeniable that the petroleum was one of the big main characters of the century X X and Colombia has not been unaware to the sways of a highly changing industry. The creation of the OPEC, the warlike conflicts, the times of high and low prices, the technological advances, the processes of energy integration and the mega coalitions are hardly some of the ingredients that seasoned the Oil Industry in the years 1900

  12. Evaluación agroindustrial de los aceites esenciales de Artemisia dracunculos L, Franseria artemisioides Willd, Salvia officinalis L, Lippia dulcis Frev, y Occimun americanum L en condiciones del Valle del Cauca Agroindustrial evaluation of essential oils of Artemisia dracunculos L, Franseria artemisioides Willd, Salvia officinalis L, Lippia dulcis Frev, and Occimun americanum L in conditions of the Cauca Valle

    OpenAIRE

    Luis F Saldarriaga C; Ginna M Sánchez M; Carmen Rosa Bonilla Correa; Manuel Salvador Sánchez Orozco; Harlen Gerardo Torres Castañeda

    2010-01-01

    En parcelas establecidas de la Colección de Trabajo de Plantas Medicinales del Centro Experimental CEUNP en condiciones del departamento del Valle del Cauca, se tomaron muestras del material vegetal mediante el corte manual en un marco de 0.25m² ; se separaron hojas, tallos y flores de cada especie. Se determinó el porcentaje de materia seca y se acondicionó para el proceso de extracción de aceite esencial mediante arrastre con vapor. A los aceites obtenidos se les midió la densidad, y el índ...

  13. Sistema de salud de Colombia The health system of Colombia

    Directory of Open Access Journals (Sweden)

    Ramiro Guerrero

    2011-01-01

    Full Text Available En este trabajo se presenta una breve descripción de las condiciones de salud de Colombia y una descripción detallada del sistema colombiano de salud. Esta última incluye una descripción de su estructura y cobertura, sus fuentes de financiamiento, el gasto en salud, los recursos con los que cuenta, quién vigila y evalúa al sector salud y qué herramientas de participación tienen los usuarios. Dentro de las innovaciones más recientes del sistema se incluyen las modificaciones al Plan Obligatorio de Salud y a los montos de la unidad de pago por capitación, la integración vertical entre empresas promotoras de salud y las instituciones prestadoras de servicios, así como el establecimiento de nuevas fuentes de recursos para lograr la universalidad e igualar los planes de beneficios entre los distintos regímenes.This document briefly describes the health conditions of the Colombian population and, in more detail, the characteristics of the Colombian health system. The description of the system includes its structure and coverage; financing sources; expenditure in health; physical material and human resources available; monitoring and evaluation procedures; and mechanisms through which the population participates in the evaluation of the system. Salient among the most recent innovations implemented in the Colombian health system are the modification of the Compulsory Health Plan and the capitation payment unit, the vertical integration of the health promotion enterprises and the institutions in charge of the provision of services and the mobilization of additional resources to meet the objectives of universal coverage and the homologation of health benefits among health regimes.

  14. Accelerating optimization by tracing valley

    Science.gov (United States)

    Li, Qing-Xiao; He, Rong-Qiang; Lu, Zhong-Yi

    2016-06-01

    We propose an algorithm to accelerate optimization when an objective function locally resembles a long narrow valley. In such a case, a conventional optimization algorithm usually wanders with too many tiny steps in the valley. The new algorithm approximates the valley bottom locally by a parabola that is obtained by fitting a set of successive points generated recently by a conventional optimization method. Then large steps are taken along the parabola, accompanied by fine adjustment to trace the valley bottom. The effectiveness of the new algorithm has been demonstrated by accelerating the Newton trust-region minimization method and the Levenberg-Marquardt method on the nonlinear fitting problem in exact diagonalization dynamical mean-field theory and on the classic minimization problem of the Rosenbrock's function. Many times speedup has been achieved for both problems, showing the high efficiency of the new algorithm.

  15. Mississippi River Valley alluvial aquifer

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — This data set represents the extent of the Mississippi River Valley alluvial aquifer in the states of Missouri, Kentucky, Tennessee, Arkansas, Mississippi, and...

  16. The History of Silicon Valley

    Institute of Scientific and Technical Information of China (English)

    Joseph Leu

    2005-01-01

    @@ Just as Manchester was once the center for indus trial progress, the microelectronics industry also has a heartland. Silicon Valley is located in a thirty by ten miles strip between San Francisco and San Jose,California.

  17. Social Networks in Silicon Valley

    Institute of Scientific and Technical Information of China (English)

    Joseph; Leu

    2006-01-01

      Social network is a dominant, distinguishing characteristic of Silicon Valley. Because innovation entails coping with a high degree of uncertainty,such innovation is particularly dependent on networks.……

  18. The Drentsche Aa valley system

    International Nuclear Information System (INIS)

    This thesis is composed of five papers concerned with Late Quaternary geology and geomorphology of the Aa valley system. The correlation and chronostratigraphic position of the layers have been established by radiocarbon dating. (Auth.)

  19. RailroadValleySpringfish_CH

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — These data identify the areas where final critical habitat for the Railroad Valley springfish (Crenichthys nevadae) occur. The irrigation ditch that is on the north...

  20. Estudio de las interacciones entre un proyecto de desarrollo y la comunidad de monterilla en Caldono (Cauca

    Directory of Open Access Journals (Sweden)

    Ibarra O. Jorge L.

    1995-12-01

    Full Text Available

    In this research, a methodology was examined to evaluate development institutions, which transcends the relationship between objectives and results. The interactions between the DERIC projects, established in Monterilla town (Cauca,and the community , were studied, The Theoretical Focus of Human Scale development by Manfred Max Neef and the Communicative Action Theory by Jurgen Habermas were applied together with the methodological orientation of IAP investigation-Action-Participation (IAP , complemented by the participant observation. Three phases were identified in the evaluative process of the interaction between the institution and the community: 1.The initial phase, where the community objectives are the starting point for the development project, and the dominance of consensual community actions, over strategic actions guarantee its initiation. 2. This is the state where community objectives are relatively fulfilled, when strategic actions are gradually seen to substitute communicative actions in the orientation of the project, to the point where a change is produced in the kind of leadership shown. 3. In the third phase, the strategic actions of the project are consolidated for the realization of the autonomous objectives of the DERIC project, which in turn ends up being the property of the Catholic church, thus transforming itself into a Foundation. The IAP evaluative process was written into this last phase in search of an opening towards the community, and so as to redirect the project. After close analysis it was found that the situation within the community, the project and the visions of some. About the development as a production of objects meant that it was not possible to gain fund achievements for social welfare. However, this process permitted a dialogue, an exchange of knowledge and provided technical advancements for some of the region´s farmers based on their particular needs.

    En la investigación se explora una

  1. Cuatro especies nuevas de Cyclanthaceae de Colombia

    Directory of Open Access Journals (Sweden)

    Tuberquia Dino

    1997-06-01

    Full Text Available Four new species of Cyclanthaceae, Asplundia trilobulata, A. gigantea, Dicranopygium arusisense and D. odoratum, from the Cabo Corrientes area on the Pacific Coast of Colombia, are described and illustrated. Their taxonomic status and probable relationships are dicussed.Se describen e ilustran cuatro especies nuevas de Cyclanthaceae, Asplundia trilobulata, A. gigantea, Dicranopygium arusisense y D. odoratum, de la región del Cabo Corrientes en la Costa Pacífica de Colombia. Se discute su posición y relaciones taxonómicas.

  2. Problematic of mining environmental liabilities in Colombia

    International Nuclear Information System (INIS)

    Mining environmental liabilities (PAM from its acronym in Spanish) are areas where there is a need for restoration, mitigation or compensation for environmental damage or unmanaged impact, produced by inactive or abandoned mining that threatens health, quality of life or public or private property. In Colombia the environmental liabilities from mining have not been regulated, but given the age and the prevalence of informality in mining, there is increasing interest in defining, regulating and managing these obligations. In this paper we approach the problem of valuing mining environmental liabilities by examining different management approaches for such liabilities around the world. We also identify key information requirements to manage mining environmental liabilities in Colombia.

  3. Plan para control de malaria en colombia

    OpenAIRE

    Rey, Hernando

    2011-01-01

    Con motivo de la colaboración de la Oficina de Relaciones Interamericanas en la solución de algunos problemas de Higiene pública en Colombia, el Secretario del Ministerio de Trabajo, Higiene y Previsión Social, doctor Alfonso Orozco, me pidió la elaboración de un breve plan para control de Paludismo en Colombia. El Plan fué presentado al Ministerio por una parte y por otra enviado al doctor Mark F. Boyd de la International Health Division de la Fundación Rockefeller.

  4. VEGETATION INVENTORY OF BALABANDERE VALLEY

    OpenAIRE

    Erol, Ulvi Erhan

    2009-01-01

    Balabandere Valley where Belgrad forest and Bosphorus meet in the easterly orientation of the forest has a very important ecological wealth within the greater Istanbul manucipality. The area, in which this study was conducted, has a potantial to become an outdoor recreation laboratory in and around Istanbul city. Balabandere valley and its vicinity can as well be described as a conservation zone with its cultural and ecological landscaoe history. It harbors a very crucial watershed for the ci...

  5. Estudios en la ecoepidemiología y enfermedad por el virus dengue en el Valle del Cauca 2002-2004

    OpenAIRE

    Mauricio Barreto Barreto; Fabián Méndez Méndez; Beatriz Parra P.

    2004-01-01

    Se conoce muy poco sobre la dinámica de transmisión del virus dengue y sobre los factores que regulan la ocurrencia de brotes en el Valle del Cauca. Se determinó de manera prospectiva la ocurrencia de infección en las poblaciones de mosquitos y humanos en cuatros focos epidémicos del departamento, con el propósito de analizar la acumulación de infecciones asintomáticas, la tasa de infección mínima en mosquito...

  6. Three new species of Hemibrycon (Characiformes: Characidae) from the Magdalena River Basin, Colombia.

    Science.gov (United States)

    Román-Valencia, César; Ruiz-C, Raquel I; Taphorn, Donald C; Mancera-Rodriguez, Néstor J; García-Alzate, Carlos A

    2013-09-01

    Fish biodiversity of aquatic ecosystems is highly threatened by different economic activities driven by human populations, and its description is increasingly a priority. For the Cauca-Magdalena River system we have described 14 species, and the purpose of this paper was to describe three new species belonging to the same genus Hemibrycon from the Nare and Guatapé River drainages of the middle Magdalena River, Colombia. The description was based on a series of 200 specimens, and the use of morphometric, meristic and osteological characters, as well as fish distribution and morphogeometric analytical methods. We have found that Hemibrycon fasciatus n. sp. (n = 54) differs from other species of Hemibrycon (that also have a vertical humeral spot) in having: melanophores outlining the posterior margins of the scales along sides of body; humeral spot extending onto posterior margin of opercle; a dark lateral stripe, formed by deep pigment that is continuous with the peduncular spot; the toothed portion of the maxilla not reaching the dorsal margin of the dentary (vs. toothed portion of maxilla extending beyond dorsal margin of dentary); all maxillary teeth tricuspid (vs. some unicuspid teeth present on maxilla). H. cardalensis n. sp. (n = 64) differs in having: a vertically elongate humeral spot that extends one or two scales below the lateral line canal. H. cardalensis n. sp. differs from all congeners in having the pigment of the caudal spot restricted to the ventral half of the caudal peduncle, and in having melanophores around the anterior scales of the lateral line. Hemibrycon antioquiae n. sp. (n = 82) differs in having a circular humeral spot. It differs from the other species with a circular humeral spot, like H. mikrostiktos, in having a projection of disperse melanophores extending from the dorsal margin of the humeral spot to below the lateral stripe. Habitat data and environmental impacts caused by the construction of reservoirs for hydroelectric projects

  7. Environmental variables, remote sensing and geographical information systems applied to the study of Rhodnius prolixus distribution in Colombia

    International Nuclear Information System (INIS)

    A data base of the entomological survey performer during the Chagas Disease National Control Programme (CHDNCP) in 1997 - 2001 and temporal satellite images masp containing 57 environmental variables were used to build Rhodnius prolixus dispersion predictive maps in Colombia, based on temporal images, Fourier analyses and a discriminative multivaried statistical analyses of the variables studied. The maps show the dispersion of this species and its implication on the Chagas disease transmission in Colombia. A clear division in the predictive dispersion of R. prolixus in two geographical zones was found: one area in the southeast of the Eastern Cordillera associated with the environmental variables used in the present study and a second zone in the Andean Valleys, East of the Eastern Cordillera not much defined by the same variables. This would suggest that the Southwest Region. of Colombia presents a tendency to a wider dispersion of R. prolixus associated to other variables like human intervention. Sylvatic populations of R. prolixus were found recently in Attalea butyracea palm trees in this Region of the Eastern Planes demonstrating the prediction of the presence of this species.

  8. Drugs, guns and early motherhood in Colombia

    OpenAIRE

    Millán-Quijano, Jaime

    2015-01-01

    This paper examines the effect of violent crime on the prevalence of early motherhood in Colombia. To instrument for the predominance of violent crime I use geographical and temporal variation in drug trafficking networks. My results suggest that one standard deviation increase in the homicide rate induces a 2.55 percentage points increase in the probability of early motherhood

  9. Astroparticle physics at the Eastern Colombia region

    Science.gov (United States)

    Asorey, Hernán; Núñez, Luis A.

    2015-12-01

    We present the emerging panorama of Astroparticle Physics at the Eastern Colombia region, and describe several ongoing projects, most of them related to the Latin American Giant Observatory (LAGO) Project. This research work is carried out at the Grupo de Investigaciones en Relatividad y Gravitacin of Universidad Industrial de Santander.

  10. Lifelong Learning in Colombia and Denmark

    DEFF Research Database (Denmark)

    Olesen, Henning Salling

    The article examines education and learning opportunities in Colombia against the backdrop of Danish modernisation and reform experiences from second half of 20th Century. The article discusses possibilities to learn from Danish experiences in the development of a Colombian lifelong learning policy...

  11. Adiciones a las leguminosas de colombia

    OpenAIRE

    2012-01-01

    Nuevas para la flora de Colombia, y de especial interés para el conocimiento de nuestras Leguminosas, son las especies colectadas recientemente que voy a reseñar. La sigla HNC se refiere a ejemplares que se conservan en el Herbario Nacional Colombiano, Instituto de Ciencias Naturales, Bogotá.

  12. Fuelling a National Innovation System in Colombia

    Science.gov (United States)

    Lucio-Arias, Diana

    2006-01-01

    This presentation of the innovation-driven environment in Colombia derives from important national efforts to gather and store pertinent information. Two large surveys have tested the "innovative behaviour" of Colombian manufacturing firms--the more recent of these was in 2005. Another information source is the Scienti platform, an online effort…

  13. Qualidade do leite de vacas criadas no sistema silvipastoril no Vale do Cauca, Colômbia

    Directory of Open Access Journals (Sweden)

    Carmen A.D. Bolaños

    2014-02-01

    Full Text Available O sistema silvipastoril caracteriza-se por aumentar a produção de leite, com maior número de vacas por hectare devido ao maior aporte de proteína na dieta. Neste sistema as vacas são alimentadas, além do pasto, de pequenas árvores e arbustos. O objetivo do presente estudo foi determinar os principais indicadores de qualidade do leite e agentes causais de mastite em vacas criadas em sistema silvipastoril. Foram avaliadas a composição (teor de gordura, proteína total, lactose, extrato seco, extrato seco desengordurado e nitrogênio uréico, contagem de células somáticas (CCS, contagem bacteriana total (CBT, ocorrência de mastite clínica e subclínica, isolamento microbiológico, perfil de sensibilidade bacteriana "in vitro" e detecção de resíduos antimicrobianos no leite produzido por 100 vacas, bem como do tanque de expansão e latões em propriedades do Vale do Cauca, Colômbia. Os teores médios dos principais constituintes do leite foram 3,24% de gordura, 3,27% de proteína total, 4,40% de lactose, 10,62% de extrato seco, 8,57% de extrato seco desengordurado e 15,82mg/dL de nitrogênio uréico, enquanto do tanque de expansão e latões foi 3,51% de gordura, 3,20% de proteína total, 4,34% de lactose, 11,72% de extrato seco, 8,47% de extrato seco desengordurado e 14,57mg/dL de nitrogênio uréico. A celularidade média dos quartos mamários e do tanque de expansão foi 141.252,75 CS/mL e 363.078,05 CS/mL respectivamente. A CBT média dos quartos mamários e do tanque de expansão foi 4.466,84 UFC/mL e 24.547,01 UFC/mL. Os principais micro-organismos isolados dos quartos mamários foram Corynebacterium bovis, Staphylococcus aureus, Staphylococcus hyicus, Staphylococcus spp., Streptococcus dysgalatiae, enquanto do tanque de expansão foram identificados Streptococcus spp., Enterobacter cloacae, Hafnia alveii, Streptococcus hemolítico e Streptococcus spp., com maior frequência. A presença de resíduos de antimicrobianos em

  14. Serological evidence of Hepatitis E Virus infection in Antioquia, Colombia slaughtered pigs

    Directory of Open Access Journals (Sweden)

    Jorge Forero D

    2015-05-01

    Full Text Available ABSTRACT Objective. To detect the presence of specific antibodies against Hepatitis E virus (HEV in pigs slaughtered in Antioquia, the department where the greatest amount of pork is produced and consumed in Colombia. Materials and methods. Between September 2011 and May 2012, blood samples from pigs were obtained in five slaughterhouses of Antioquia, four of them located in the Aburrá Valley subregion and other located in northern subregión. Serum were evaluated with a commercial ELISA kit for diagnosing HEV in humans but adapted to detect IgG and IgM antibodies in pigs. Results. A 100.0% seropositivity for IgG antibodies was found in 1000 samples evaluated, and 82.06% for IgM antibodies were found in 740 samples. Conclusions. These results indicate that pigs in slaughter age in Antioquia, and possibly in Colombia, have been exposed to HEV at some point in their production process and a high percentage of them can arrive to slaughterhouses with recent infection.

  15. Historia de los conflictos interétnicos por el territorio en Chocó y Norte del Cauca. Su incidencia en la política de restitución de tierras, 2011

    OpenAIRE

    Daniela López Gómez

    2014-01-01

    This article reports the relationship between indigenous and black communities in the area of northern Cauca (san Rafael and Monte Teta) and north Choco (Unguia), focusing on the conflict over territory with the aim of demonstrating that ethnic groups are not homogeneous and that they do not have a state of inertia over time.it also aims to demonstrate that territorial disputes are common and they do not just limit to the confrontations between insurgent groups and the population but, on the ...

  16. Nutrition, development, and foreign aid: a case study of U.S.-directed health care in Colombian plantation zone.

    Science.gov (United States)

    Taussig, M

    1978-01-01

    Based on a case study of some aspects of Rockefeller and USAID intervention in the Cauca Valley, Colombia, this article is aimed at drawing attention to the political characteristics and inadequacies of U.S.-sponsored health care planning and research in the Third World, particularly as regards nutrition in rural regions of intensive economic development. By contrasting an historical analysis of the politicoeconomic development of agriculture and nutrition in the southern Cauca Valley with the assumptions guiding U.S. intervention in the health field there, a more complete picture of the causes of malnutrition is obtained, among which should be counted the intervention of the U.S. itself. Inter alia, other approaches to the malnutrition problem are suggested. PMID:631959

  17. Notes in colombian herpetology, iii

    OpenAIRE

    Dunn, Emmett Reid

    2012-01-01

    In my recent paper on American Caecilians (Dec. 1942, Bull. Mus. Camp. Zool. 91, 6) the six then known specimens of Gymnopis from Colombia were regarded as of one species, G. nicefori Barbour, with a range from Cáceres in the Lower Cauca in northern Antioquia (alt. 150 m.) to Honda, Girardot and San Juan de Rioseco (alt. 1300 m.) in the Upper Magdalena valley. Later examination of four additional specimens from the Upper Magdalena valley, Honda (3) and Aguas Blancas in Tolima, seemed to confi...

  18. Ten new species of Rhagovelia in the angustipes complex (Hemiptera: Heteroptera: Veliidae) from Colombia, with a key to the Colombian species.

    Science.gov (United States)

    Padilla-Gil, Dora Nancy

    2015-01-01

    Ten new species of Rhagovelia are described from Colombia as follows: Rhagovelia penta sp. n., and Rhagovelia santanderi sp. n., from the Upper and Middle Magdalena River Valley respectively; Rhagovelia carina sp. n., Rhagovelia tricoma sp. n., and Rhagovelia barbacoensis sp. n., from Altaquer, Río Ñambi; Rhagovelia caunapi sp. n. from Río Caunapi; Rhagovelia tumaquensis sp. n., from Tumaco, Río Mejicano; Rhagovelia jagua sp. n., from Eastern Andes; Rhagovelia mocoa sp. n. and Rhagovelia umbria sp. n., from Amazonas region. Rhagovelia tantilla Drake & Harris is recorded from Colombia, for the first time; the description of macropterous morph of Rhagovelia espriella Padilla-Gil, 2011 and a key to the Rhagovelia, angustipes complex of Colombian species are provided. PMID:26701554

  19. Modelling photochemistry in alpine valleys

    Directory of Open Access Journals (Sweden)

    G. Brulfert

    2005-01-01

    Full Text Available Road traffic is a serious problem in the Chamonix Valley, France: traffic, noise and above all air pollution worry the inhabitants. The big fire in the Mont-Blanc tunnel made it possible, in the framework of the POVA project (POllution in Alpine Valleys, to undertake measurement campaigns with and without heavy-vehicle traffic through the Chamonix and Maurienne valleys, towards Italy (before and after the tunnel re-opening. Modelling is one of the aspects of POVA and should make it possible to explain the processes leading to episodes of atmospheric pollution, both in summer and in winter. Atmospheric prediction model ARPS 4.5.2 (Advanced Regional Prediction System, developed at the CAPS (Center for Analysis and Prediction of Storms of the University of Oklahoma, enables to resolve the dynamics above a complex terrain. This model is coupled to the TAPOM 1.5.2 atmospheric chemistry (Transport and Air POllution Model code developed at the Air and Soil Pollution Laboratory of the Ecole Polytechnique Fédérale de Lausanne. The numerical codes MM5 and CHIMERE are used to compute large scale boundary forcing. This paper focuses on modelling Chamonix valley using 300-m grid cells to calculate the dynamics and the reactive chemistry which makes possible to accurately represent the dynamics in the Chamonix valley (slope and valley winds and to process chemistry at fine scale. The summer 2003 intensive campaign was used to validate the model and to study chemistry. NOy according to O3 reduction demonstrates a VOC controlled regime, different from the NOx controlled regime expected and observed in the nearby city of Grenoble.

  20. Modelling photochemistry in alpine valleys

    Directory of Open Access Journals (Sweden)

    G. Brulfert

    2005-03-01

    Full Text Available Road traffic is a serious problem in the Chamonix Valley, France: traffic, noise and above all air pollution worry the inhabitants. The big fire in the Mont-Blanc tunnel made it possible, in the framework of the POVA project (POllution in Alpine Valleys, to undertake measurement campaigns with and without heavy-vehicle traffic through the valley, towards Italy (before and after the tunnel re-opening. Modelling in POVA should make it possible to explain the processes leading to episodes of atmospheric pollution, both in summer and in winter.

    Atmospheric prediction model ARPS 4.5.2 (Advanced Regional Prediction System, developed at the CAPS (Center for Analysis and Prediction of Storms of the University of Oklahoma, enables to resolve the dynamics above a complex terrain.

    This model is coupled to the TAPOM 1.5.2 atmospheric chemistry (Transport and Air POllution Model code developed at the Air and Soil Pollution Laboratory of the Ecole Polytechnique Fédérale de Lausanne.

    The numerical codes MM5 and CHIMERE are used to compute large scale boundary forcing.

    Using 300-m grid cells to calculate the dynamics and the reactive chemistry makes possible to accurately represent the dynamics in the valley (slope and valley winds and to process chemistry at fine scale.

    Validation of campaign days allows to study chemistry indicators in the valley. NOy according to O3 reduction demonstrates a VOC controlled regime, different from the NOx controlled regime expected and observed in the nearby city of Grenoble.

  1. The regional response to the crisis in Colombia

    OpenAIRE

    Kaiser, Daniel R.

    2003-01-01

    This thesis focuses on the regional response to the crisis in Colombia. The major conclusions of the thesis are that the crisis directly affects the security of Colombia's neighbors; that the use of military force will be the most important element in a strategy to restore security and that the Colombian military will require external military assistance to do so; that while Colombia's neighbors have traditionally rejected ideas of intervention, there are indications that they may be willing ...

  2. Valley evolution by meandering rivers

    Science.gov (United States)

    Limaye, Ajay Brian Sanjay

    Fluvial systems form landscapes and sedimentary deposits with a rich hierarchy of structures that extend from grain- to valley scale. Large-scale pattern formation in fluvial systems is commonly attributed to forcing by external factors, including climate change, tectonic uplift, and sea-level change. Yet over geologic timescales, rivers may also develop large-scale erosional and depositional patterns that do not bear on environmental history. This dissertation uses a combination of numerical modeling and topographic analysis to identify and quantify patterns in river valleys that form as a consequence of river meandering alone, under constant external forcing. Chapter 2 identifies a numerical artifact in existing, grid-based models that represent the co-evolution of river channel migration and bank strength over geologic timescales. A new, vector-based technique for bank-material tracking is shown to improve predictions for the evolution of meander belts, floodplains, sedimentary deposits formed by aggrading channels, and bedrock river valleys, particularly when spatial contrasts in bank strength are strong. Chapters 3 and 4 apply this numerical technique to establishing valley topography formed by a vertically incising, meandering river subject to constant external forcing---which should serve as the null hypothesis for valley evolution. In Chapter 3, this scenario is shown to explain a variety of common bedrock river valley types and smaller-scale features within them---including entrenched channels, long-wavelength, arcuate scars in valley walls, and bedrock-cored river terraces. Chapter 4 describes the age and geometric statistics of river terraces formed by meandering with constant external forcing, and compares them to terraces in natural river valleys. The frequency of intrinsic terrace formation by meandering is shown to reflect a characteristic relief-generation timescale, and terrace length is identified as a key criterion for distinguishing these

  3. Mapping Environmental Dimensions of Dengue Fever Transmission Risk in the Aburrá Valley, Colombia

    Directory of Open Access Journals (Sweden)

    A. Townsend Peterson

    2009-12-01

    Full Text Available Dengue fever (DF is endemic in Medellín, the second largest Colombian city, and surrounding municipalities. We used DF case and satellite environmental data to investigate conditions associated with suitable areas for DF occurrence in 2008 in three municipalities (Bello, Medellín and Itagüí. We develop spatially stratified tests of ecological niche models, and found generally good predictive ability, with all model tests yielding results significantly better than random expectations. We concluded that Bello and Medellín present ecological conditions somewhat different from, and more suitable for DF than, those of Itagüí. We suggest that areas predicted by our models as suitable for DF could be considered as at-risk, and could be used to guide campaigns for DF prevention in these municipalities.

  4. Mapping Environmental Dimensions of Dengue Fever Transmission Risk in the Aburrá Valley, Colombia

    OpenAIRE

    A. Townsend Peterson; Sair Arboleda; Nicolas Jaramillo-O.

    2009-01-01

    Dengue fever (DF) is endemic in Medellín, the second largest Colombian city, and surrounding municipalities. We used DF case and satellite environmental data to investigate conditions associated with suitable areas for DF occurrence in 2008 in three municipalities (Bello, Medellín and Itagüí). We develop spatially stratified tests of ecological niche models, and found generally good predictive ability, with all model tests yielding results significantly better than random expectations. We con...

  5. Hydrocarbon export and production in Colombia. Present time and perspectives; Exportacion y produccion de hidrocarburos en Colombia: Actualidad y perspectiva

    Energy Technology Data Exchange (ETDEWEB)

    Herbert, Richard [BP Exploration (Colombia)

    1997-07-01

    The present projects of operation of new fields will increase the importance of Colombia as exporter of crude. This paper analyzes the process of operation and oil production in Colombia under three subjects: the transition process in this country, future challenges and the necessary associations between the private sector and the state for the success. A projection is made of the oil production in Colombia from 1980 to 2010, as well as of the reserves and production of gas. [Spanish] Los proyectos actuales de explotacion de nuevos campos aumentaran la importancia de Colombia como exportador de crudo. Este trabajo analiza el proceso de explotacion y produccion de petroleo en Colombia bajo tres temas: el proceso de transicion en este pais, sus retos futuros y las asociaciones entre el sector privado y el estado necesarias para el exito. Se hace una proyeccion de la produccion petrolera en Colombia de 1980 al 2010 asi como de las reservas y produccion de gas.

  6. UREDINALES DE PLANTAS CULTIVADAS DE INTERÉS FLORAL EN COLOMBIA UREDINALES OF CULTIVATED FLOWERS IN COLOMBIA

    Directory of Open Access Journals (Sweden)

    Víctor Manuel Pardo Cardona

    2006-06-01

    Full Text Available Treinta especies de Uredinales (royas se han registrado en Colombia parasitando a veintiseis especies de plantas cultivadas de interés floral comprendidas en 21 géneros y 15 familias botánicas. Se registra para Colombia y la zona andina de Sudamérica a Puccinia hemerocallidis Thuemen. Se confirma la presencia en Colombia de Puccinia antirrhini Dietel & Holway y Uromyces gladioli P. Hennings.Thirty species of Uredinales (rust fungi are registered in Colombia parasitizing 26 species of cultivated flowers belonging to 21 genera and 15 botanical families. Puccinia hemerocallidis Thuemen is a new record for Colombia and the Andean zone of South America. Puccinia antirrhini Dietel & Holway and Uromyces gladioli P. Hennings are first records for Colombia.

  7. Los hongos de colombia-ii: nuevas especies de uredinales

    OpenAIRE

    Buriticá, Pablo

    2012-01-01

    El presente trabajo incluye resultados parciales del estudio de los materiales coleccionados conjuntamente con el doctor Kent P. Dumont en Colombia y Ecuador. Es, por otra parte, la primera contribución hacia la preparación de una Flora Micológica de Colombia.  Se describen aquí cuatro especies nuevas de Uredinales, dos de las cuales se conocen únicamente de material coleccionado en Colombia, una del Ecuador y otra representada por ejemplares procedentes de Colombia y de Puerto Rico.

  8. 27 CFR 9.154 - Chiles Valley.

    Science.gov (United States)

    2010-04-01

    ... 27 Alcohol, Tobacco Products and Firearms 1 2010-04-01 2010-04-01 false Chiles Valley. 9.154... Chiles Valley. (a) Name. The name of the viticultural area described in this section is “Chiles Valley.” (b) Approved maps. The appropriate maps for determining the boundary of the Chiles...

  9. Steam injection in Colombia under challenging environment

    Energy Technology Data Exchange (ETDEWEB)

    Waghray, J.P. [Mansovar Energy Colombia Ltd (Colombia)

    2011-07-01

    Mansarovar Energy Columbia Ltd. is a company extracting heavy oil from its Colombian fields. In order to enhance the production and at the same time to contribute to the economic recovery, they are using the cyclic steam injection method. The aim of this presentation is to show what are the challenges facing heavy oil extraction in Colombia, what is the state of the art, and what needs to be improved. Heavy oil extraction in Colombia presents two sorts of challenges: operational ones related to sanding problems and diluents and gas availability; and commercial ones, related to low return rates. The use of steam injection in conventional wells can, however, increase both productivity and the rate of return while at the same time enhancing the recovery factor by 10 to 15%. For the future, improvement in drilling and completion, production, and steam efficiency will be necessary as well as the implementation of the appropriate enhanced oil recovery processes.

  10. Sirenomelia: two cases in Cali, Colombia.

    Science.gov (United States)

    Saldarriaga, Wilmar; Salcedo-Arellano, Maria Jimena; Ramirez-Cheyne, Julian

    2015-01-01

    We report two cases of sirenomelia, a rare congenital defect with a prevalence rate of 1:100 000 births; both cases were observed in Cali, Colombia. Both pregnant women were referred from Buenaventura, Colombia. The expecting mothers shared multiple adverse sociodemographic factors. Their homes were located in a city where the entire population is of low socioeconomic status living under conditions of extreme poverty. They were uneducated, with nutritional deficiencies and no access to drinking water most of the time. Both were exposed to water and fish from a nearby river contaminated with leachate from a poorly managed landfill. A similar relation was previously reported in Cali in 2005 between environmental factors and sirenomelia. We suggest that there is a common aetiological factor of environmental origin between these two sirenomelia cases and propose that exposure to derivatives from landfills should be included among the factors for this rare defect of multifactorial aetiological origin. PMID:25636631

  11. Conflict fields of journalistic praxis in Colombia

    Directory of Open Access Journals (Sweden)

    Rousbeh Legatis

    2010-10-01

    Full Text Available The chronic uncertainty for journalists and editors in carrying out their professional work in Colombia has many sources and has been serious for decades. Currently – besides indicators of extreme physical violence (such as daily attacks, abuse, kidnappings and murders – problem areas are strongly marking journalistic work in Colombia that are often neglected in the international discussion, such as inadequate training offerings, unsatisfactory infrastructure in the workplace, precarious wage situations, lack of independence in relationship to editors and a poorly taught understanding of professional ethics. These structural problems produce qualitative deficiencies – especially in conflict reportage. But instead of stagnation, change is occurring. Colombian journalists are revising their self-image, at the same time developing a problem consciousness in their own work, and are actively trying to correct the deficiencies.

  12. Franchises in Colombia, legal regulations and features

    OpenAIRE

    María Andrea Camacho Solana

    2016-01-01

    Este artículo es una reflexión sobre el estudio de la franquicia en Colombia y su desarrollo a través de los años. También analiza cómo los abogados sin tener ninguna regulación expresa han podido manejar esta figura, en particular con los Estados Unidos, que ha sido el país que ha tenido más injerencia en la evolución de este contrato en la economía colombiana. Se parte de un análisis de la figura en Colombia, de sus principales características y elementos, ejemplos prácticos de franquicias ...

  13. Franchises in Colombia, legal regulations and features

    Directory of Open Access Journals (Sweden)

    María Andrea Camacho Solana

    2016-01-01

    Full Text Available Este artículo es una reflexión sobre el estudio de la franquicia en Colombia y su desarrollo a través de los años. También analiza cómo los abogados sin tener ninguna regulación expresa han podido manejar esta figura, en particular con los Estados Unidos, que ha sido el país que ha tenido más injerencia en la evolución de este contrato en la economía colombiana. Se parte de un análisis de la figura en Colombia, de sus principales características y elementos, ejemplos prácticos de franquicias en el país y riesgos que puede presentar la figura.

  14. Colombia en la guerra de Corea Colombia in Korea ’s war

    Directory of Open Access Journals (Sweden)

    Adolfo León Atehortúa Cruz

    2008-06-01

    Full Text Available Este artículo se ocupa de cinco aspectos poco explorados con respecto a la Guerra de Corea: la decisión de participar en el conflicto por parte del gobierno colombiano; la selección de los oficiales al frente del Batallón Colombia; la búsqueda de armas para el gobierno de Laureano Gómez; la experiencia obtenida por el Ejército de Colombia, y la influencia norteamericana profundizada con ella.This article refers five aspects scarcely explored on the Korea ’s War: the Colombian decision of participating in the conflict; the selection of the officials in the Battalion Colombia; the search for weapons by Laureano Gómez; the experience obtained by the Colombian Army, and the North American influence established on that period.

  15. The Future of Silicon Valley

    Institute of Scientific and Technical Information of China (English)

    Joseph Leu

    2006-01-01

    @@ By the end of 1984, Silicon Valley was going through the down cycle fol lowing the PC boom. A hundred PC companies wanted just 10 percent of the market, wanting to strike it rich, as rich as the Apple IPO (Initial Public Of fering) -the Google celebrity IPO of its day.

  16. Political participation and war in Colombia

    OpenAIRE

    García, Miguel; Hoskin, Gary

    2003-01-01

    This study analyses the impact of the war on political participation in the March 2002 elections to the lower house of the Colombian Congress. The specific research question is whether the dynamics of violence in Colombia has affected the way voters behaved in those elections. In order to provide some answers, this article seeks to pinpoint the relationship between war and democracy by focusing upon a key component of democratic regimes, namely political participation. The article is organize...

  17. Percepciones venezolanas sobre la crisis de colombia.

    OpenAIRE

    Miriam Kornblith.

    2004-01-01

    This paper analyzes the effects of the Colombian conflict in Venezuela and the perceptions of threat of the country's leading political actors regarding Colombia's security crisis. The author discusses the tangible consequences of the Colombian conflict in Venezuela. Second, the ways in which the security crisis has been perceived and politically maneuvered by the Venezuelan government is explored. Finally, the article traces the interaction been the securitization of security and defense iss...

  18. Plant Turnover and Structural Reforms in Colombia

    OpenAIRE

    Marcela Eslava; John Haltiwanger; Adriana Kugler; Maurice Kugler

    2006-01-01

    In a healthy economy, plant turnover increases aggregate productivity because efficient producers are more likely to survive. Given high entry and exit rates and the potential importance of turnover in accounting for aggregate productivity, in this paper we examine the determinants of plant exits and then examine how exits and other forms of output reallocation contribute to aggregate productivity. Using a unique plant-level longitudinal data set for Colombia for the period 1982-98, we examin...

  19. Tests psicológicos en Colombia

    Directory of Open Access Journals (Sweden)

    José M. González

    1977-01-01

    Full Text Available In order to find out test usage by Colombian psychologists, a questionnaire was sent to a sample of members of the Colombian Federation of Psychology. Thírty-three percent of the questionnaires were answered. The most widely used tests in Colombia are: (1 Weschler, (2 Rorschach, (3 Kuder, (4 TAT, and (5 CAT, HMP, and Raven. The results are compared with those found in other countries.

  20. Corporate Governance and Firm Valuation in Colombia

    OpenAIRE

    Pombo, Carlos; Luis H. Gutiérrez

    2007-01-01

    This paper studies the separation of ownership and control of 108 listed companies in Colombia from 1996 to 2002, finding that voting rights are greater than cash flow rights because of indirect ownership across firms. The paper also examines the association of various ownership and control measures and separation ratios with a firm’s value and performance for the same sample of companies that traded their stock from 1998 to 2002. Large blockholders were found to exert a positive influence up...

  1. The constitutional control system in Colombia

    OpenAIRE

    Luis Javier Moreno Ortiz

    2010-01-01

    The system of constitutional control in Colombia designed in the Legislative Act n.º 3 of 1910 is a milestone in a long and fruitful political and constitutional tradition owes much to his Hispanic roots and its American developments. Both the public action of unconstitutionality as the plea of unconstitutionality have clear precedents in the constitutionalism of Spain and the Colony were prepared by a Constituent Assembly acted with knowledge and faithfulness to that tradition and have been ...

  2. Depositor Behavior and Market Discipline in Colombia

    OpenAIRE

    Roberto Steiner; Adolfo Barajas

    2000-01-01

    This study examines how depositors choose among different banks and over time in Colombia, focusing on whether they discipline bank behavior. By controlling for a more comprehensive set of risk/return factors, the study improves upon conventional market discipline tests. Panel data estimations for 1985-99 show that depositors prefer banks with stronger fundamentals, and that banks tend to improve their fundamentals after being “punished” by depositors. Banks with stronger fundamentals benefit...

  3. Has plan Colombia ignored neighboring countries?

    OpenAIRE

    Andrade-Garzon, Celso.

    2008-01-01

    The United States government has two main concerns in South America's Andean region. The first is drug production and trafficking. This study focuses on the drug supply from the Andean region. The second concern is the insurgency conducted by Colombian narco-guerilla groups. The Colombian government is dedicated to defeating those illegal groups as the main cause of regional violence. Their primarily military strategy, implemented by local government, is Plan Colombia, which in the last s...

  4. Colombia : Creditor Rights and Insolvency Proceedings

    OpenAIRE

    Rouillon, Adolfo

    2006-01-01

    This article analyzes the legislation and institutions connected with creditor rights and insolvency proceedings in Colombia. It aims to contribute to the debate on the conditions required to restore the vitality of the Colombian credit environment. In relation to creditor rights, there is a particular emphasis on mechanisms for establishing security interests used in granting corporate credit. The analysis identifies the principal factors affecting the efficiency of security interests. These...

  5. Contributions to an orchid flora of colombia

    OpenAIRE

    Hawkes, Alex D.

    2012-01-01

    During the past several years the writer has been amassing materials for a proyected illustrated monographic treatment of the 0rchidaceae of Colombia. At an early date it became evident that the materials involved were insufficient for critical revisions of the vast majority of the complex genera involved. A large number of the typical specimens of Schlechters myriad Colombian taxa were destroyed during the Second World War, and since they were in the main unicates, must in many cases -until ...

  6. A transdisciplinary political science in Colombia

    OpenAIRE

    Julián Andrés Caicedo Ortiz; Sergio Angel Baquero; Julián Andrés Cuellar Argote

    2015-01-01

    The article proposes an epistemological interpretation of the disciplinary development of political science in Colombia. Through a hermeneutical exercise it builds the need to think and recognize the political science in a (trans) disciplinary way to show then that in the process of formation of the different faculties have participated professionals from different branches, revealing the difficulty to set up programs with disciplinary specificities. The article concludes that this transdisci...

  7. How Profitable is Higher Education in Colombia?

    OpenAIRE

    Gustavo Hernández

    2010-01-01

    This paper examines the education premium for graduate students in Colombia, focusing on the screening hypothesis which is tested via sheepskin effects. A new dataset for higher education is constructed using administrative records of educational institutions and social security information. The findings suggest that the Colombian labor market places a high value on an individual’s alma mater, followed in, second place, by undergraduate field of study. Finally, the evidence also implies that ...

  8. The holding of the earth in Colombia

    International Nuclear Information System (INIS)

    A description of the modern cadastre, the cadastral tendency to world level and its state in Colombia is done, as well as distribution of rural properties, in order to impelling to the sustainable development of the country, which depends on the summary, and upgrade and popularization of the use of the cadastral information. Finally some statistics coming from the national base of cadastre are done

  9. Colombia: la aplanadora minera a toda marcha

    OpenAIRE

    Grisales Gonzáles, Daniel

    2011-01-01

    This article presents a brief characterization of the legislation governing the mining industry, particularly the reforms issued from the first decade of the century XXI, highlighting the incentives given to big business for the sake of turning Colombia into the country of destination large investments in this sector of the industry. It continues with some relevant figures regarding mining application and certification in the country, concluding with some relevant elements concerning the poss...

  10. Rueda Cardoso, Juan Alberto (Compilador y editor. 2012. Los ejércitos federales de Colombia, 1855- 1886. Bucaramanga: Universidad Industrial de Santander. ISBN: 978-958-8819-10-5.

    Directory of Open Access Journals (Sweden)

    Luis Miguel Pardo Bueno

    2014-05-01

    Full Text Available La investigación sobre los ejércitos federales de Colombia dirigida por Juan Alberto Rueda, comprende una compilación de nueve capítulos escritos por ocho autores diferentes que muestran el proceso de construcción de la fuerza pública durante el periodo federal colombiano. La exposición del libro centra su atención en describir las características organizativas, económicas, políticas y sociales de las fuerzas armadas creadas en los Estados de Panamá, Cauca, Bolívar, Cundinamarca, Santander, Magdalena, Antioquia, Boyacá y Tolima. Para ello, los autores recurrieron a diversas fuentes en cada región: informes de los presidentes de los Estados y gobernadores; memorias de los secretarios de guerra y marina; gacetas oficiales; manuales y reglamentos militares; leyes, decretos, códigos militares, documentos de la secretaría de guerra y marina y constituciones nacionales y estatales; tesis, historiografía del siglo XIX e historiografía regional y nacional; prensa y diarios políticos y militares.

  11. Cuantificación del riesgo de incumplimiento en créditos de libre inversión: un ejercicio econométrico para una entidad bancaria del municipio de Popayán, Colombia

    Directory of Open Access Journals (Sweden)

    Fabián Enrique Salazar Villano

    2013-01-01

    Full Text Available Este documento aborda el estudio del riesgo de crédito como un objetivo de la regulación bancaria moderna, partiendo de la teoría económica hasta llegar a una aproximación cuantitativa concreta. En este sentido, se plantean 2 modelos econométricos para una institución bancaria representativa en la cartera de libre inversión en el municipio de Popayán, Departamento del Cauca (Colombia, con los cuales se logra demostrar que su cartera de libre inversión es de bajo riesgo, aun bajo ciertas características del acreditado y del contrato de crédito, y por otro lado, que el riesgo de incumplimiento es elástico o altamente sensible ante el ciclo económico, e inelástico ante las tasas de interés y desempleo de la ciudad.

  12. Caracterización morfológica de 29 introducciones de Physalis peruviana L. de la colección de trabajo de la Universidad Nacional de Colombia Sede Palmira

    Directory of Open Access Journals (Sweden)

    Carlos Eduardo Madriñán Palomino

    2011-01-01

    Full Text Available Physalis peruviana L. (uchuva, de la familia Solanaceae, es una de las frutas más importantes en términos de exportaciones para Colombia debido a sus propiedades nutricionales y medicinales. En nuestro país la caracterización morfológica y evaluación de los bancos de germoplasma ha comenzado a implementarse. El objetivo de la presente investigación es la caracterización morfológica mediante descriptores discriminantes de 29 Introducciones de uchuva representativas de la colección de trabajo de la Universidad Nacional de Colombia sede Palmira. El trabajo se realizó en la Reserva Natural "La Albecia", vereda Regaderos, corregimiento de Aují, Municipio de El Cerrito - Valle del Cauca, a una altura de 1945 msnm, temperatura de 18-20°C, humedad relativa 70-80% y precipitación anual de 900-1200 mm. El ensayo se desarrolló en tres fases. En la primera se escogieron 29 introducciones representativas de la colección de trabajo de uchuva (CTU. En la segunda se estableció el ensayo bajo un diseño experimental de bloques completos al azar (BCA y en la última fase se recopiló la información mediante descriptores cuantitativos y cualitativos previamente seleccionados. Se obtuvo un dendrograma a partir del análisis de conglomerado de varianza mínima de Ward, que determinó cinco grupos para las variables cualitativas. El tercer grupo explica el mayor grado de similitud entre las 29 introducciones evaluadas, con un porcentaje del 27.58. La mayor variabilidad estuvo relacionada con los caracteres del fruto: peso con y sin cáliz, grados Brix y diámetros polares y ecuatoriales.

  13. Child soldiers in Colombia: Five views [Niños soldados en Colombia: cinco visiones

    Directory of Open Access Journals (Sweden)

    Jaime Alberto Carmona Parra

    2012-07-01

    Full Text Available This paper offers explanations of the meanings that push children to illegally armed groups in Colombia from the testimony of 21 demobilized young girls from the region of Antioquia (Colombia. The girls’ answers are placed on a typology of explanations drawn from academic reports, and compared to three samples of attributions of students, teachers and policemen of their same region. The visions “idealizing” and “criminalizing” mobilization are practically marginal in all samples. The dominant vision among the girls is called “self-assertive”. From the rest of the samples, as well as for the experts, the majority of the views are “victimizing”.

  14. Topological spin and valley pumping in silicene.

    Science.gov (United States)

    Luo, Wei; Sheng, L; Wang, B G; Xing, D Y

    2016-01-01

    We propose to realize adiabatic topological spin and valley pumping by using silicene, subject to the modulation of an in-plane ac electric field with amplitude Ey and a vertical electric field consisting of an electrostatic component and an ac component with amplitudes and . By tuning and , topological valley pumping or spin-valley pumping can be achieved. The low-noise valley and spin currents generated can be useful in valleytronic and spintronic applications. Our work also demonstrates that bulk topological spin or valley pumping is a general characteristic effect of two-dimensional topological insulators, irrelevant to the edge state physics. PMID:27507592

  15. Hazardous solid wastes management in Antioquia (Columbia); Lineamientos para la gestion de residuos solidos especiales peligrosos en el area matropolitana del valle De Aburra (Antioquia-Colombia)

    Energy Technology Data Exchange (ETDEWEB)

    Agudelo Garcia, R. A.; Yepes Palacio, D. Y.

    2002-07-01

    The aim of the present study was to determine the sort of problems associated with management of dangerous waste in the metropolitan area of Aburra Valley, located in Antioquia. Colombia. In the area there are organizations responsible for handling, control detracting, and managing dangerous waste. Yet, their current management policies are deficient. The study supports the design of proposals and guidelines that, from different points of view, indicate handling methods for this type of waste, starting from strategies for strengthening and encouraging actions for its integral management. (Author)

  16. Hohenbergia andina (bromeliaceae), nueva especie del noroccidente de colombia

    OpenAIRE

    Betancur, Julio

    2012-01-01

    Se describe e ilustra Hohenbergia andina J. Betancur, una interesante especie nueva de Bromeliaceae de la vertiente Occidental de los Andes en el noroccidente de Colombia. H. andina representa el primer registro del género para Colombia y aparentemente es endémica para la región de la que es descrita.

  17. Year of displaced people’s rights in Colombia

    OpenAIRE

    Marco Alberto Romero

    2007-01-01

    A Campaign for the Rights of Displaced People in Colombia, launched in 2007 by UNHCR, Colombian NGO CODHES and the Catholic Church, has tried to raise awareness in Colombia and the international community about the severity of the country’s displacement crisis and its failure to guarantee the rights of displaced people.

  18. A Geographical Information System for Malaria in Colombia (SIGMA)

    International Nuclear Information System (INIS)

    A Geographical Information System for Malaria in Colombia (SIGMA) is introduced and its capabilities and modules are described. It allows the interactive visualization of the Colombian Ministry of Social Protection database at national, regional and municipal levels and the analysis of relationships with different environmental and climatic variables. SIGMA is a powerful decision support system for human health intervention and management programs in Colombia

  19. 76 FR 53165 - Certification Related to Aerial Eradication in Colombia

    Science.gov (United States)

    2011-08-25

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF STATE Certification Related to Aerial Eradication in Colombia Pursuant to the authority vested in the Secretary of... for aerial eradication of illicit crops in Colombia is being used in accordance with EPA...

  20. Colombia : Inputs for Sub-Regional Competitiveness Policies

    OpenAIRE

    World Bank

    2008-01-01

    In recent years, the Government of Colombia (GoC) has placed a high priority on competitiveness. Increasing globalization trends and Colombia's decision to increase trade integration, with the negotiation of a free trade agreement (FTA) with the US, has led the government to focus on a complementary agenda to boost competitiveness in order to reap the benefits of increased trade integratio...