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Search Results: 1 - 10 of 12934 matches for " Laura Arango "
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Colombian Media in the XXI Century: The Re-conquest by Foreign Investment
Arango-Forero,Germán; Arango,María Fernanda; Lla?a,Laura; Serrano,María Carolina;
Palabra Clave , 2010,
Abstract: this paper summarizes and examines the more relevant financial investments, mergers and acquisitions carried out in the colombian media market by major international groups during the first decade of the 21st century. in a highly unprecedented environment and within a period of only ten years, an important share of colombia's leading media companies passed into the hands of foreign firms that remain attracted to the country, given the size of the market, the potential for growth in the different sectors and the policies on foreign direct investment being stimulated and protected by the national government in the field of media content distribution and telecommunication service delivery. the spanish groups planeta, prisa and telefónica, and telmex from mexico have become the main players in this phenomenon, which is known as the re-conquest
Descripción de resultados clínicos con una dosis modificada de amiodarona para la conversión de la fibrilación auricular aguda a ritmo sinusal Description of the clinical outcomes with an amiodarone modified dose for the conversion of acute atrial fibrillation to sinus rhythm
William Uribe,Esteban Uribe,Laura Arango,Beatriz Sánchez
Revista Colombiana de Cardiología , 2009,
Abstract: Introducción: la fibrilación auricular es el disturbio del ritmo cardiaco sostenido más común. La amiodarona es un antiarrítmico que se usa para la conversión a ritmo sinusal, y la dosis que más se emplea reporta una tasa de éxito de 45% a 85% en las primeras veinticuatro horas; sin embargo, no hay consenso en cuanto a la dosis óptima para el tratamiento de la fibrilación auricular. Objetivo: evaluar la eficacia de amiodarona intravenosa durante las primeras setenta y dos horas en la conversión a ritmo sinusal de pacientes con episodios agudos de fibrilación auricular utilizando una modificación de la dosis recomendada. Métodos: estudio descriptivo-retrospectivo de un grupo de pacientes con episodio agudo de fibrilación auricular durante enero de 2000 a junio de 2006, tratados con la dosis propuesta de amiodarona intra-venosa. Resultado: se evaluaron las historias clínicas de 152 pacientes. La edad promedio fue 61,8 ± 16,9 a os; 63,2% de los pacientes era de género masculino. La tasa de conversión a ritmo sinusal fue de 70,5%; de éstos, 81,3% lo hicieron en las primeras veinticuatro horas. La presencia de cardiopatía dilatada y fibrilación auricular permanente, y la respuesta ventricular lenta se asociaron al fracaso de conversión a ritmo sinusal, OR 4,7; 11,5 y 10,2 respectivamente (p < 0,05). Tener corazón sano se asoció con el éxito de conversión a ritmo sinusal, observándose como factor protector (OR 0,28 y p= 0,011). Conclusiones: la dosis de amiodarona propuesta mostró ser eficaz y segura por la baja frecuencia de efectos adversos. Además, resultó costo-efectiva al compararse con otros medicamentos antiarrítmicos disponibles en nuestro medio. Introduction: atrial fibrillation is the most common sustained cardiac arrhythmia. Amiodarone is an antiarrhythmic used for conversion to sinus rhythm. A success rate of 45 to 85% in the first 24 hours is reported for the most commonly used dose. However, there is no consensus as to the optimal dose for treatment of atrial fibrillation. Objetive: to evaluate the efficacy of IV amiodarone during the first 72 hours for conversion to sinus rhythm in patients with acute episodes of atrial fibrillation using a modification of the recommended dose. Methods: descriptive and retrospective study of all patients presenting with acute atrial fibrillation between January 2000 and June 2006 managed with the proposed dose of IV amiodarone. Results: clinical records of 152 patients were evaluated. Average age was 61.8 ± 16.9 years (SD). 63.2% of patients were male. The rate of conversion to sinus rhythm was 70.5%. Of these,
Quiste subcondral a nivel de la articulación interfalángica proximal en una potranca criolla colombiana: reporte de caso
Giraldo Botero,Lucas; Vásquez Salinas,Laura; Delgado Arango,Andrés;
CES Medicina Veterinaria y Zootecnia , 2011,
Abstract: we report the case of an equine patient, assessed by especial - vet prívate practice, whose orthopedic clinical examination showed a degree of lameness ii / v in both hind limbs (according to aaep classification), which demonstrated no improvement after medical treatment with parenteral phenylbutazone. subsequently a new orthopedic clinical examination was performed in which an abaxial, perineural anesthetic block was applied to both hind legs, which produced 90% improvement compared to the initial degree of lameness. digital radiographic evaluation was performed with the following results: dorsal-plantar and lateral-medial images which showed a circumscribed, radiolucent área at the level of the distal third of the first phalanx, with communication to the proximal interphalangeal joint on both hind limbs. following, an ultrasound evaluation was carried out in which there was an anechoic área and lack of continuity of the bone surface at the proximal interphalangeal joint of both hind limbs. these findings established a definitive diagnosis of a subchondral bone cyst at the distal third of the first phalanx, with communication to the proximal interphalangeal joint. intra-articular infiltration was performed with triamcinolone acetonide, betamethasone and hyaluronic acid; antibiotics as prophylaxis, rest in a stable for 4 weeks with a gradual return to exercise, and provision of enteral, chondroprotective supplements (p.o. flexequin ? 40 gr/ day and p.o. cortaflex ? 20ml/day). at the time of publication of this article, the patient does not present any degree of lameness and is performing normal athletic and physical activity.
Comportamiento de la mandarina Arrayana en seis patrones en suelos ácidos del piedemonte Llanero de Colombia
Orduz-Rodríguez,Javier Orlando; Arango-Wiesner,Laura; Monroy,Hernán; Fischer,Gerhard;
Agronomía Colombiana , 2006,
Abstract: in the piedemonte llanero, arrayana mandarins grafted on cleopatra mandarin are slow to come into bearing. for this purpose, it is necessary to select rootstocks, which improve the production and quality of arrayana mandarins in the first harvests. in the experiment established in july 1997 in soils of the higher terrace of piedemonte of meta (typic haplustox), six rootstocks were used in the colombian citriculture. before transplanting correctives were applied to increase the base saturation over 60%. trees on citrumelo swingle rootstock had higher cumulative yield for five harvests surpassing volkameriana lemon, and later were sunki × english, and cleopatra mandarin rootstocks without statistical differences among them, followed by sunki × jacobson, and the lowest yield observed on carrizo rootstock. in the last monitoring, the tree height was similar for all rootstocks except carrizo, which presented the smallest height and canopy volume. the highest yield efficiency of canopy volume, on an average over five harvests, was registered on trees of swingle, followed by volkameriana, sunki × english, and sunki × jacobsen, respectively (without statistical differences among them), followed by cleopatra and, finally, carrizo. the highest fruit size was developed on volkmeriana and swingle rootstocks, followed by sunki × english, sunki × jacobsen, carrizo, and cleopatra, respectively. all rootstocks presented similar fruit quality, except vokmeriana, which had lowest total soluble solids (tss) content and tss/total titratable acid ratio.
Determinación de distancias de siembra en papayo, Carica papaya L. para la zona plana del Valle del Cauca
Arango W. Laura V.,Bedoya V. Lucy,Salazar C. Raúl
Acta Agronómica , 1986,
Abstract: Se estudiaron cuatro distancias entre surcos (1,2, 3 y 4 m) y tres entre plantas (1, 2 Y 3 m) en un dise o de paralelas divididas. Al reducir la distancia de plantación se incrementaron la altura de planta, de floración y el rendimiento, mientras que disminuyeron el diámetro del tallo y número de hojas. No se afectaron las variables número de nudos, tiempo de trasplante a floración y cosecha, tiempo de cosecha, incidencia de virosis, número de frutos por planta y calidad. El rendimiento fue fuertemente afectado por la distancia de siembra. El mayor rendimiento (57.1 t/ha) en un período de 2 meses se obtuvo al separar los surcos 1 m y 2 m las plantas. The present work was carried out with the objective of to determine the best planting distance for the papayo tree under the Cauca Valley. Four distances between rows (1, 2, 3 and 4 m) and three between ptants (1, 2 and 3 m) were studied, using a split plot design with three repetitions. A reduction in planting distances increased the height of plant, flowering and yield; however the stem diameter and leaf number decreased. Number of nodes, period of time from transplanting to flowering and harvest, harvest time, virus incidence, number of fruits per plant as well as its quality were not affected by variation on planting distances. The yield was strongly affected by planting distances. The best yield (57.1 t/ha) over a period of harvest of 2 months was obtained with a 1 m between rows and 2 m between plants.
Comportamiento de la mandarina Arrayana en seis patrones en suelos ácidos del piedemonte Llanero de Colombia
Orduz-Rodríguez Javier Orlando,Arango-Wiesner Laura,Monroy Hernán,Fischer Gerhard
Agronomía Colombiana , 2006,
Abstract: Los cultivos de mandarina Arrayana en el piedemonte Llanero se encuentran injertados en mandarina Cleopatra y presentan una entrada tardía en producción, por lo que es necesario seleccionar patrones que mejoren la producción y calidad de la mandarina Arrayana en las primeras cosechas. En el experimento, establecido en julio de 1997 en suelos de la terraza alta del piedemonte del Meta (Typic Haplustox), se evaluaron seis patrones usados en la citricultura colombiana. Antes del transplante se aplicaron correctivos para aumentar la saturación de bases por encima del 60%. La mayor producción de frutos acumulada de cinco cosechas se obtuvo con Swingle, superando a Volkameriana y detrás de éste, los patrones Sunki × English y Cleopatra, sin diferencias estadísticas entre ellos, seguidos por Sunki × Jacobson y por último, con la menor producción, por Carrizo. En la última lectura, la altura de la planta fue igual para todos los patrones, con excepción de Carrizo, que presentó el menor tama o, así como también el menor volumen de copa. La mayor eficiencia productiva del volumen de copa promedio de cinco cosechas se obtuvo con Swingle, seguida, en su orden, con los patrones Volkameriana, Sunki × English y Sunki × Jacobson –sin diferencias estadísticas entre ellos–, Cleopatra y en el último lugar Carrizo. El mayor tama o de fruta se produjo en Volkameriana y Swingle, seguidos, en su orden, por Sunki × English, Sunki × Jacobson, Carrizo y Cleopatra. Todos los patrones presentaron calidad de fruta similar, con excepción de Volkameriana, que demostró un menor contenido en sólidos solubles totales (SST) y en la relación SST/acidez total titulable.
Evaluación del semen canino, sometido a congelación con diferentes concentraciones de glicerol como crioprotector
Uribe Valderrama,Rubén; Arango Rodríguez,María Elena; Rendón álvarez,Laura; Acevedo Naranjo,Carlos Mauricio;
CES Medicina Veterinaria y Zootecnia , 2011,
Abstract: the study of biotechnology used in canines for reproductive purposes, is a of the principal research study points to the area of veterinary medicine in last years28. in the objective to evaluate the effect of three different concentrations of glycerol on canine semen, to subjected cryo-preservation process, were obtained using manual manipulation, 12 semen samples of male labrador clinically healthy and subject to the same driving conditions. each sample was divided in four treatments (ti: control, t2: 4%, t3: t4 6% and 8% glycerol), to which they evaluated the volume, ph, motility, concentration, morphology and vitality, respectively. then in the analysis were determined after thawing seminal differences and its relationship to the concentration of cryoprotectant. from the results obtained in this project are significant differences between the variables morphology, mortality and concentration, also established that t2 (4% glycerol) and t3 (6% glycerol) provide better results for freezing semen canines.
Sistema NADPH oxidasa: nuevos retos y perspectivas
Arango Rincón,Julián Camilo; Gámez Díaz,Laura Yaneth; López Quintero,Juan álvaro;
Iatreia , 2010,
Abstract: the nadph oxidase system is a multiprotein complex that acts as the main source of reactive oxygen species (ros) in different cells and tissues. in phagocytic cells (mainly macrophages and neutrophils) it is essential for eliminating pathogenic microorganisms, by phagocytosis and the formation of neutrophil extracellular traps (nets). it also contributes to inflammatory processes. genetic defects in the components of the system cause alterations in the production of ros by phagocytic cells, leading to the primary immunodeficiency known as chronic granulomatous disease (cgd). this is a review article on the components of the nadph oxidase system, its cellular distribution, activation, mechanisms of action, and roles in other tissues. the different molecular defects that lead to egc are also reviewed, as well as its treatment, including therapy with ifnγ, and the prospects for the study of the system.
Identificación y tipificación de biotipos y serotipos de Yersinia enterocolitica
Elizalde Casta?eda,Paulino; Díaz? Aparicio,Efrén; Hernández? Andrade,Laura; Jaramillo Arango,Carlos Julio;
Revista de Saúde Pública , 2001, DOI: 10.1590/S0034-89102001000400008
Abstract: objective: to assess the presence of yersinia enterocolitica in otherwise healthy pigs slaughtered for human consumption. methods: one hundred pharyngeal tonsils were sampled in a slaughterhouse in the state of mexico. the minimum sample size (n=100) was calculated based on a preliminary sample of 20 cases, which had 20% positive cases. the collected tonsil samples were inoculated in rappaport broth, and salmonella-shigella and mcconkey media. the biotyping identification process was based on biochemical and serological tests using o:3, o:8 and o:9 antisera. results: twenty-two isolates were obtained. most were biotype 1 (8 cases of o:3 and 8 cases of o:9), but 6 cases could not be serotyped. none of the isolates were of o:8 group. conclusions: this was the first time that y. enterocolitica serotypes were isolated from pig tonsils in mexico. its importance rely on the fact that the isolated serotypes are the most commonly found in public health problems.
Prevalencia del trastorno depresivo en pacientes que consultan un servicio de urgencias en Bogotá
Gómez-Restrepo,Carlos; Ospina,Laura; Castro-Díaz,Sergio; Gil,Fabián; Arango Villegas,Carlos Alberto;
Revista Colombiana de Psiquiatría , 2011,
Abstract: background: depression is a public health problem worldwide due to its high prevalence. in emergency departments it is often underdetected and undertreated. it is important to be informed about the prevalence of this disorder in emergency departments in bogotá. objective: to determine the prevalence of clinically significant depressive symptoms in the last week among adult patients visiting the emergency department (ed) with non-psychiatric complaints, in a teaching hospital in bogotá. method: cross-sectional study in adult patients who visit the ed. data collected included sociodemographical data, chief complaint, diagnosis, and results of the center for epidemiologic studies depression scale (ces-d). results: of the 470 patients visiting the ed, 27.7% had clinically significant depressive symptoms. the presence of depressive symptoms was associated with female sex, low education level, visits to the ed in the afternoon, and the diagnosis of a central nervous system disease. conclusions: this study identified a high frequency of clinically significant depressive symptoms among ed patients in bogotá. more studies are needed to determine risk factors associated to this disorder in this kind of population.
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