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Search Results: 1 - 10 of 209304 matches for " Arbeláez Mario G. "
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Tratamiento físico y químico del suelo para el control Del marchitamiento vascular del clavel causado por el Hongo fusariumoxysporumf. Sp. Dianthi
Garcia David L.,Arbeláez Mario G.,Arbeláez German
Agronomía Colombiana , 1995,
Abstract: Los problemas fitosanitarios constituyen uno de los aspectos más importantes en el cultivo del clavel en Colombia, destacándose, entre ellos, el marchitamiento vascular del clavel, causado por el hongo F. oxysporum f.sp. dianthi. Con el propósito de avanzar en el manejo de dicha enfermedad. Se realizaron dos ensayos en dos fincas productoras de flores en la Sabana de Bogotá, comparando tratamientos físicos y químicos al suelo antes de la siembra. En el primer experimento efectuado con diferentes variedades de clavel estándar, se comprar el fumigante 1.3-0 Cloropicrina frente a la aplicación de vapor de agua. Los dos tratamientos fueren igualmente eficientes en la disminución de la incidencia de la enfermedad en todas las variedades evaluadas; de igual manera no se encontraron diferencias en cuanto a la reducción de la población del hongo en el suelo. Altura de las plantas y la producción y la calidad de las flores. En el segundo experimento, donde se evaluaron diferentes variedades de clavel miniatura, se compara la efectividad del fumigante 1.3-0 Cloropicrina frente al fumigante Dazomet. EI tratamiento al suelo con el fumigante 1,3-0 Cloropicrina fue más eficiente que el fumigante Dazomet en la reducción de la incidencia de la enfermedad y de la población del hongo en el suelo. En el desarrollo de las plantas y en la producción y la calidad de las flores.
Characterization of diabetic patients undergoing dialysis at hospital Universitario San Vicente de Paúl, in Medellín, Colombia Características de los pacientes con diagnóstico de diabetes mellitus en diálisis en la Unidad Renal del Hospital Universitario San Vicente de Paúl, Medellín-Colombia
Eliana María Zapata Agudelo,Ana Mercedes Mejía Lenis,Jorge Enrique Henao Sierra,Mario Arbeláez Gómez
Iatreia , 2005,
Abstract: Introduction: Worldwide, diabetes mellitus (DM) is one of the main causes of renal insufficiency. However, very few Latin American and Colombian studies on the subject have been published. Dialyzed diabetic patients suffer from complications more frequently than their non-diabetic counterparts. Besides, many complications associated with DM are already present before the beginning of dialysis. Purpose: To characterize diabetic patients undergoing dialysis at an university hospital in Medellín, Colombia. Methodology: A cross sectional descriptive study was carried out including all patients registered in the dialysis program on May 31, 2003 at the Renal Unit of Hospital Universitario San Vicente de Paúl. A semistructured questionnaire was used to collect clinical and laboratory information from the patient′s records. Results: Out of 396 dialysis patients, 102 (25.7%) had the diagnosis of diabetic nephropathy which, in 15.3% of them, had been made less than five years before the beginning of this study. Two hundred and eighteen patients were on hemodialysis and 178, on peritoneal dialysis; 65 of the former (29.8%) and 37 of the latter (20.8%) were diabetic. Complete information was obtained from 64 and 34, respectively, for a total of 98 patients (57 men [58.2%] and 41 women [41.8%]). Their average time on dialysis was 1.53 years. DM type 2 was diagnosed in 88 patients (89.8%). High blood pressure was found in 92 patients (93.9%), overweight in 47 (47.9%), total cholesterol above 180 mg/dL in 58.2%, triglycerides above 150 mg/dL in 55.1%, retinopathy in 79.6%, total or partial blindness due to DM in 25.5%, neuropathy in 62.2%, and cardiovascular disease in 84.6%. A majority of patients were not fulfilling self-care recommendations. Conclusions: Diabetic nephropathy, most frequently due to type 2 DM, is the main cause of renal insufficiency at our Renal Unit. Diagnosis is often delayed and complications are the rule. It would be important to establish educational and intervention programs to promote self-care conducts and healthy life styles, with participation of a multidisciplinary group, in order to improve the quality of life of these patients. La diabetes mellitus (DM) es una de las principales causas de insuficiencia renal en el mundo. En Colombia y Latinoamérica existen pocos estudios sobre los diabéticos en diálisis. Las alteraciones en pacientes dializados diabéticos son mayores que en los no diabéticos y muchas complicaciones asociadas a la DM ya están presentes al iniciar la diálisis. Objetivo: determinar las características de los pacientes diab
PRONóSTICO DE FALLAS DE SISTEMAS REPARABLES UTILIZANDO REDES NEURONALES ARTIFICIALES
MARCELO ARBELáEZ G.
Scientia Et Technica , 2006,
Abstract: Este artículo propone una metodología que permite pronosticar el número de fallas en un sistema mediante el uso de redes neuronales artificiales. Se muestra el desarrollo de la metodología propuesta mediante su aplicación a las líneas primarias de distribución de energía de la ciudad de Pereira.
Características de los pacientes con diagnóstico de diabetes mellitus en diálisis en la Unidad Renal del Hospital Universitario San Vicente de Paúl, Medellín-Colombia
Zapata Agudelo,Eliana María; Mejía Lenis,Ana Mercedes; Henao Sierra,Jorge Enrique; Arbeláez Gómez,Mario; Villegas Perrasse,Alberto;
Iatreia , 2005,
Abstract: introduction: worldwide, diabetes mellitus (dm) is one of the main causes of renal insufficiency. however, very few latin american and colombian studies on the subject have been published. dialyzed diabetic patients suffer from complications more frequently than their non-diabetic counterparts. besides, many complications associated with dm are already present before the beginning of dialysis. purpose: to characterize diabetic patients undergoing dialysis at an university hospital in medellín, colombia. methodology: a cross sectional descriptive study was carried out including all patients registered in the dialysis program on may 31, 2003 at the renal unit of hospital universitario san vicente de paúl. a semistructured questionnaire was used to collect clinical and laboratory information from the patient's records. results: out of 396 dialysis patients, 102 (25.7%) had the diagnosis of diabetic nephropathy which, in 15.3% of them, had been made less than five years before the beginning of this study. two hundred and eighteen patients were on hemodialysis and 178, on peritoneal dialysis; 65 of the former (29.8%) and 37 of the latter (20.8%) were diabetic. complete information was obtained from 64 and 34, respectively, for a total of 98 patients (57 men [58.2%] and 41 women [41.8%]). their average time on dialysis was 1.53 years. dm type 2 was diagnosed in 88 patients (89.8%). high blood pressure was found in 92 patients (93.9%), overweight in 47 (47.9%), total cholesterol above 180 mg/dl in 58.2%, triglycerides above 150 mg/dl in 55.1%, retinopathy in 79.6%, total or partial blindness due to dm in 25.5%, neuropathy in 62.2%, and cardiovascular disease in 84.6%. a majority of patients were not fulfilling self-care recommendations. conclusions: diabetic nephropathy, most frequently due to type 2 dm, is the main cause of renal insufficiency at our renal unit. diagnosis is often delayed and complications are the rule. it would be important to establish educational and i
Caracterización de la respuesta de tres variedades de rosa a la infección de Peronospora sparsa Berkeley, bajo condiciones de invernadero
Gómez Sandra,Arbeláez Germán Arbeláez
Agronomía Colombiana , 2005,
Abstract:
Tratamiento físico y químico del suelo para el control del marchitamiento vascular del clavel, causado por el hongo fusariumoxysporumf.sp.dianthi
García David Leonardo,Arbeláez Mario Germán,Arbeláez Torres Germán
Agronomía Colombiana , 1994,
Abstract: Los problemas fitosanitarios constituyen uno de los aspectos más importantes en el cultivo del clavel en Colombia, destacándose el marchitamiento vascular causado por el hongo Fusarium oxysporumf.sp. dianthi. Con el propósito de encontrar un control eficiente para el manejo de dicha enfermedad, se realizaron dos experimentos en dos fincas productoras de flores en la Sabana de Bogotá, comparando algunos tratamientos físicos y químicos al suelo antes de la siembra. En el primer experimento, efectuado con diferentes variedades de clavel estándar, se comparó el fumigante 1,3-D. Cloropicrina frente a la aplicación de vapor de agua. Se utilizó un dise o completamente al azar con contrastes. En este experimento, los dos tratamientos fueron igualmente eficientes en la disminución de la incidencia de la enfermedad en todas las variedades evaluadas; de igual manera, no se encontraron diferencias significativas en cuanto a la reducción de la población del hongo en el suelo, la altura de las plantas. La producción y la calidad de las flores. En el segundo experimento, donde se evaluaron diferentes variedades de clavel miniatura, se comparó el fumigante 1,3-D. Cloropicrina frente al fumigante Dazomet. En este ensayo, se utilizó un dise o de bloques completos al azar. El tratamiento al suelo con el fumigan te 1 ,3-D. Cloropícrina fué más eficiente que el fumigante Dazomet en la reducción de la incidencia de la enfermedad, en el desarrollo de las plantas, en la reducción de la población del hongo en el suelo, en la producción y en la calidad de las flores.
Efecto de la temperatura en el periodo de latencia y producción de esporangios de Peronospora sparsa Berkeley en tres variedades de rosa
Gómez,Sandra; Arbeláez,Germán;
Agronomía Colombiana , 2005,
Abstract: expensive handling, the low efficacy of downy mildew management strategies and the strong relationship with weather conditions place great importance on this disease in producing roses for export. this research was aimed at studying the pathogen's biology to understand its relationship with temperature and host variety in laboratory conditions. sporangia of peronospora sparsa from rose leaves with sporulation were collected in sterile water. a 30,000 sporangia per millilitre suspension was used for inoculating healthy detached leaves from 'charlotte', 'classy' and 'first red' varieties grafted onto 'manetti' and 'natal briar' rootstocks and others rooted directly. the research was carried out at 10, 14, 18 and 22 °c with regulating 12-hour periods of light and dark. the sporulation index (si) and sporangia production per cm2 leaflet were evaluated after seven days' inoculation. classy presented the shortest latent period in this study whilst the longest was observed in 'first red'. temperatures higher than 18 °c were favourable for pathogen sporulation. the highest si was observed in the 'classy' variety, 'charlotte' presented a medium value and 'first red' showed the lowest si at the different temperatures evaluated. variations in latent period and sporulation intensity were specific according to variety and temperature.
Caracterización de la respuesta de tres variedades de rosa a la infección de Peronospora sparsa Berkeley, bajo condiciones de invernadero
Gómez,Sandra; Arbeláez,Germán;
Agronomía Colombiana , 2005,
Abstract: healthy 'charlotte', 'classy' and 'first red' variety rose plants grafted onto 'natal briar' and 'manetti' rootstocks and others rooted directly were inoculated with a sporangial suspension of peronospora sparsa and then incubated for 12 h in a moisture chamber in the dark. after that, plants were kept in normal greenhouse conditions. symptoms of downy mildew were first observed in plants from the three tested varieties on leaves seven days after sporangia inoculation. the symptoms on stems occurred 17 and 18 d after inoculation in 'charlotte' and between 21 and 28 d in 'classy' and 'first red'. the symptoms on flower buds appeared 14 and 16 d after inoculation in 'charlotte', 14 d after inoculation in 'classy' and between 16 and 26 d in 'first red' plants. defoliation of affected leaves first occurred in 'classy' 12 d after inoculation. this reaction was observed in 'charlotte' from 18 to 28 d and in 'first red' plants from 15 to 28 d. no interactions regarding incidence of the disease were observed between rose variety and plant stratum. not all stages of disease development were similar in the different treatments employed in this research; some differences were observed, depending on the rootstock to which the materials had been grafted.
Efecto de la temperatura en el periodo de latencia y producción de esporangios de Peronospora sparsa Berkeley en tres variedades de rosa
Gómez Sandra,Arbeláez Germán
Agronomía Colombiana , 2005,
Abstract:
Tratamiento endoscópico de cáncer gástrico temprano en Colombia con seguimiento a cinco a?os
Gómez,Martín; Otero,William; Arbeláez,Víctor;
Revista Colombiana de Gastroenterologia , 2009,
Abstract: early gastric cancer (egc) is being diagnosed more frequently as each day passes. this is true not only in japan but around the world. even though the endoscopic treatment is relatively simple, our field does not yet have enough experience in long term monitoring after successful endoscopic treatment. for this reason we undertook this study and targeted the following objectives: 1. to determine the efficiency of endoscopic treatment in curing egc. 2. to investigate the incidence of recurrence of tumors after five years of monitoring. materials and methods. between march 2002 and june 2004 we prospectively included patients who were diagnosed with egc at el tunal hospital and monitored for at least 5 years. endoscopic diagnoses were done according to the classification of the japanese society. patients diagnosed with types i, iia and iib of less than 20mm and which were histologically well-differentiated or moderately differentiated were endoscopically treated. results. 11 patients were included in this study. 63.6% were men. the average age was 66.1 years. all the egcs were found in the gastric body. loop resection was performed on seven patients, resection and injection with plastic cup on 1 patient, injection and band placement on 1 patient, traction and loop resection (double channel endoscopy) on two patients. the resection was incomplete in 2 patients. the average monitoring time was 71.3 months (60 to 84 months). there were no incidences of tumor recurrence. conclusions. mucosectomy is a simple, safe and curative method for egc. it is easily performed by a well-trained gastroenterologist.
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