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Search Results: 1 - 10 of 463129 matches for " Wilmer A. Parra "
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Georreferenciación de ciudad bolívar: sistema de visualización e información UPZ 70 Jerusalén
Wilmer A. Parra,Gerardo Pati?o,Giovani Mancilla G.
Visión Electrónica , 2012,
Abstract: Este artículo presenta la descripción de la implementación de un sistema piloto que permite: georreferenciar un territorio, particularmente la Unidad de Planeación Zonal Jerusalén (UPZ 70) de Ciudad Bolívar, Localidad 19 de la ciudad de Bogotá (Colombia), a través de un dispositivo GPS; editar la información adquirida; almacenarla en una base de datos espacial; generar mapas, y mostrar la información mediante aplicaciones Web y Wap (Wireless Aplication Protocol), implementando el concepto de Web Mapping y utilizando programas de código abierto.
Cognitive assessment in Alzheimer’s disease  [PDF]
Mario A. Parra
Advances in Alzheimer's Disease (AAD) , 2013, DOI: 10.4236/aad.2013.24016
Abstract: Cognitive assessment in Alzheimer’s disease
Inventario preliminar de plantas útiles de bosques remanentes en las Delicias y el Guamo, Serranía de Imataca, Estado Bolívar, Venezuela
DíAZ P.,Wilmer A.;
Acta Botánica Venezuelica , 2007,
Abstract: the preliminary results of an ethnobotanic inventory carried out in the rural settlements las delicias and el guamo, serrania imataca, bolívar state, are presented. this study is product of a proposal of integral development, that included a diagnosis of the use potentiality of the existing botanical resource in the area. 79 species were inventoried, of which 51 are useful species, the majority used by the people in traditional medicine, according to the consultation of a local person with experience in local plants. a floristic list of the species registered in the study area is included.
Composición florística y estructura de bosques en los asentamientos campesinos Las Delicias, el guamo y lechozal, Estado Bolívar,Venezuela
Díaz P.,Wilmer A.;
Ernstia , 2007,
Abstract: a floristic and structural characterization of a part of the forests from asentamientos campesinos las delicias, el guamo and lechozal, municipio caroní, bolívar state, venezuela is presented. these forests were inventoried in 0,1 ha plots three in deciduous forests, and one in semideciduous forests. for each type of forest floristic composition and structure were analyzed and shannon (h′) diversity index and evenness were calculated. in deciduous forest were found 41 species belonging to 27 families were found dominating, according to fiv, leguminosae s.l. (11 species), sapotaceae four species), burseraceae and verbenaceae (two species each one). the most important species, according to ivi, are spondias mombin, tetragastris sp., pouteria sp., guazuma ulmifolia and genipa americana, while in the sub-evergreen forest 26 species, were found to where leguminosae (four species), lecythidaceae and sapotaceae (three species each), burseraceae, meliaceae and chrysobalanaceae (two species each), are the most dominant families (according fiv) and peltogyne floribunda, protium sp., lecythis sp., ecclinusa sp. and tetragastris sp. are the species with the greatest value of ivi. the forests were different in height (low to medium, 10-25 m), density (323 - 700 ind./ha), basal area (16,1 - 40 m2/ha) and evenness (0,83-0,95), but alike in diversity (2,64-2,68). a floristic list of the families and species registered in the studied area their the common names and life forms, is included.
Preliminary inventory of useful plants of remain forests from Las Delicias and El Guamo, Serranía Imataca, BolívarState, Venezuela Inventario preliminar de plantas útiles de bosques remanentes en las Delicias y el Guamo, Serranía de Imataca, Estado Bolívar, Venezuela
Wilmer A. DíAZ P.
Acta Botánica Venezuelica , 2007,
Abstract: The preliminary results of an ethnobotanic inventory carried out in the rural settlements Las Delicias and El Guamo, Serrania Imataca, Bolívar State, are presented. This study is product of a proposal of integral development, that included a diagnosis of the use potentiality of the existing botanical resource in the area. 79 species were inventoried, of which 51 are useful species, the majority used by the people in traditional medicine, according to the consultation of a local person with experience in local plants. A floristic list of the species registered in the study area is included. Se presentan los resultados preliminares de un inventario etnobotánico del área de los asentamientos campesinos Las Delicias y El Guamo, Serranía de Imataca, estado Bolívar. Este estudio es producto de una propuesta de desarrollo integral, que incluyó un diagnóstico de la potencialidad de uso del recurso botánico existente en la zona. Se encontraron 79 especies, de las cuales 51 son útiles, la mayoría en medicina tradicional, de acuerdo a la consulta a un baquiano conocedor de las plantas locales. Se incluye una lista florística de las especies registradas hasta el momento en el área de estudio.
Composición florística y estructura de bosques en los asentamientos campesinos Las Delicias, el guamo y lechozal, Estado Bolívar,Venezuela
Wilmer A. Díaz P.
Ernstia , 2007,
Abstract: Se presenta la caracterización florístico estructural de una parte de los bosques de los Asentamientos campesinos Las Delicias, El Guamo y Lechozal, en el municipio Caroní, Estado Bolívar, Venezuela. Estos bosques fueron inventariados en parcelas de 0,1 ha; tres en bosques deciduos y una en un bosque semideciduo. Para cada tipo de bosque se analizó la composición florística, la estructura y se calculó el índice de diversidad Shannon (H′) y el de equidad asociado. En el bosque deciduo se encontraron 41 especies pertenecientes a 27 familias, dominando, según el FIV, Leguminosae s.l. (11 especies),Sapotaceae (cuatro especies), Burseraceae y Verbenaceae (dos especies cada una). Las especies más importantes según los valores de IVI, en los bosques deciduos son Spondias mombin, Tetragastris sp., Pouteria sp., Guazuma ulmifolia y Genipa americana, mientras que en el bosque semideciduo se encontraron 26 especies, siendo Leguminosae (4 especies), Lecythidaceae y Sapotaceae (tres especies cada una), Burseraceae, Meliaceae y Chrysobalanaceae (dos especies cada una), las familias más dominantes (según FIV) y Protium sp., Peltogyne floribunda, Lecythis sp., Trichilia sp. y Ecclinusa sp., las especies con mayor valor de IVI. Los bosques fueron diferentes en altura del dosel (bajos a medios, 10-25 m), densidad (323 - 700 ind./ha), área basal (16,1 - 40 m2/ha) y equidad (0,83-0,95), pero parecidos en diversidad (2,64-2,68). Se incluye un listado florístico de las familias y especies registradas en el área con sus nombres comunes y formas de vida. A floristic and structural characterization of a part of the forests from Asentamientos campesinos Las Delicias, El Guamo and Lechozal, municipio Caroní, Bolívar State, Venezuela is presented. These forests were inventoried in 0,1 ha plots three in deciduous forests, and one in semideciduous forests. For each type of forest floristic composition and structure were analyzed and Shannon (H′) diversity index and evenness were calculated. In deciduous forest were found 41 species belonging to 27 families were found dominating, according to FIV, Leguminosae s.l. (11 species), Sapotaceae four species), Burseraceae and Verbenaceae (two species each one). The most important species, according to IVI, are Spondias mombin, Tetragastris sp., Pouteria sp., Guazuma ulmifolia and Genipa americana, while in the sub-evergreen forest 26 species, were found to where Leguminosae (four species), Lecythidaceae and Sapotaceae (three species each), Burseraceae, Meliaceae and Chrysobalanaceae (two species each), are the most dominant families (accord
Plantas colonizadoras en áreas perturbadas por la minería en el Estado Bolívar, Venezuela
Díaz P,Wilmer A; Elcoro,Silvino;
Acta Botánica Venezuelica , 2009,
Abstract: as part of the floristic inventory of some disturbed areas for gold and diamond?s alluvial mining in bolívar state five localities were studied during the years 1992 and 1993. mining activities cause holes, mood ponds and tails. in each locality the tails were divided in four areas according to the substrate and the plants were collected. the first herbs and sufrutescent plants showed at edges of the ponds and holes. asa-karón is the richest locality, followed by supamo-parapapoy, el polaco, bochinche and guaniamo. cyperus odoratus, c. luzulae, fuirena umbellata, pityrogramma calomelanos, trema micrantha and phytolacca rivinoides are common species at the majority of the localities. the families with more species are poaceae, cyperaceae, leguminosae, melastomataceae, asteraceae, rubiaceae, solanaceae, onagraceae, bignoniaceae and clusiaceae.
Plantas colonizadoras en áreas perturbadas por la minería en el Estado Bolívar, Venezuela Pioneer plant species in disturbed mining areas in Bolívar State, Venezuela
Wilmer A Díaz P,Silvino Elcoro
Acta Botánica Venezuelica , 2009,
Abstract: Como parte del inventario florístico de áreas afectadas por minería aluvial de oro y diamante en el estado Bolívar se visitaron cinco localidades entre 1992 y 1993. La actividad minera forma huecos, lagunas de lodo y colas. En cada localidad las colas se dividieron en cuatro áreas de acuerdo al sustrato y se colectaron plantas. Las primeras hierbas y sufrútices aparecieron en los bordes de las lagunas, cortes y declives. La localidad Asa-Karón presenta la mayor riqueza, seguida por Supamo-Parapapoy, El Polaco, Bochinche y Guaniamo. cyperus odoratus, c. luzulae, Fuirena umbellata, Pityrogramma calomelanos, trema micrantha y Phytolacca rivinoides son comunes a la mayoría de las localidades. Las familias con más especies son Poaceae, Cyperaceae, Leguminosae, Melastomataceae, Asteraceae, Rubiaceae, Solanaceae, Onagraceae, Bignoniaceae y Clusiaceae. As part of the floristic inventory of some disturbed areas for gold and diamond’s alluvial mining in Bolívar State five localities were studied during the years 1992 and 1993. Mining activities cause holes, mood ponds and tails. In each locality the tails were divided in four areas according to the substrate and the plants were collected. The first herbs and sufrutescent plants showed at edges of the ponds and holes. Asa-Karón is the richest locality, followed by Supamo-Parapapoy, El Polaco, Bochinche and Guaniamo. cyperus odoratus, c. luzulae, Fuirena umbellata, Pityrogramma calomelanos, Trema micrantha and Phytolacca rivinoides are common species at the majority of the localities. The families with more species are Poaceae, Cyperaceae, Leguminosae, Melastomataceae, Asteraceae, Rubiaceae, Solanaceae, Onagraceae, Bignoniaceae and Clusiaceae.
Catálogo de plantas vasculares de ciudad Bolívar ysus alrededores, estado Bolívar, Venezuela
DíAZ P,Wilmer A; DELASCIO-CHITTY,Francisco;
Acta Botánica Venezuelica , 2007,
Abstract: a catalog of the vascular plants of ciudad bolívar and its surroundings is presented, comprising 868 species, of which 19 belong to the filicopsida (ferns), 141 to the liliopsida (monocotyledons) and 708 to the magnoliopsida (dicotyledons). the taxa listed here include 135 families and 502 genera, including collections made by various researchers between 1995 and 2005, as well as specimens reported for the study area in flora of the venezuelan guayana. the ten families with highest number of species are fabaceae s.s. (91), poaceae (50), cyperaceae (35), mimosaceae (33), caesalpiniaceae (30), rubiaceae (29), asteraceae (27), convolvulaceae (24), euphorbiaceae (24) and malvaceae (20). the specimens are deposited in guyn,port,ven and wis herbaria
Digital processing of geoelectrics data applying the Ridge Regression in the Parish Olegario Villalobos of the Municipality Maracaibo, Zulia State
Márquez,Wilmer; Cardozo,María; Villasmil,Gerson;
Revista Técnica de la Facultad de Ingeniería Universidad del Zulia , 2003,
Abstract: this investigation, is based on the ridge regression method for the processing digital of geoelectrics data, applied in 1970 by marquardt, hoerl and kennard, and in 1973 by joseph robert inman, which involve robust statistical parameters to obtain better results of apparent resistivity values and thickness for lineally dependent systems, using, the vertical electric sound method under the schlumberger electrodic configuration in the parish olegario villalobos of the municipality maracaibo. this geoelectric information is processed with the ghosh method, applying lineal models that generate curves of apparent resistivity for optimizing the obtained variables with the ridge regression method, the half error and the residual variance, among other indicate the residual deviation, the estimate range and the noise level on the data, the last one is defined in 3% as a, product of the relationship between the half percentage error and the standard deviation which define reliable parameters in the interpretation phase of the is geoelectrics these profile indicate the presence of fresh water aquifer, with a top of 30 m, a base of 80 m profile and a flow of 2 l/seg, in the sector las mercedes school.
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