Evaluación de métodos de propagación, fertilización nitrogenada y fenología de estevia en condiciones del valle del cauca

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 dí

Braiding networks of freedom

Braiding networks of freedom constitutes a valuable tool for teachers and students in the exercise of constructing citizenship and promoting coexistence in their schools and their surroundings. This document contributes to strengthening citizens’ capacities, as promoted by the ECC- “Educación para la Ciudadanía y la Convivencia”: Identity, Dignity and Rights; Responsibilities and respect for people’s rights; Sensitivity and Emotion Management; Meaning of Life, Body and Nature; Participation and Coexistence”. One mission of the Colombian education system is to promote a general and objective understanding of the world while maintaining the subjective perspectives, customs, beliefs and ways of life of each ethnic group; that is why, as part of its social and integration program, the Ministry of National Education has regulated the “Cátedra de Estudios Afrocolombianos” (CEA) which promotes the construction of interculturality within and from educational institutions, and focuses on recognizing the contributions African-Colombian, Black, Palenquera and Raizal populations have made to politics, economics, sciences, academia, arts and so o

Optimal gastric ESD benchmarks :The learning curve of an untutored Western endoscopist

28 páginasBackground & aims Endoscopic submucosal dissection (ESD) is widely used in Asia to resect superficial gastric lesions, but reports on the gastric ESD learning curve of Western endoscopists are scarce. Moreover, it is uncertain whether optimal ESD outcome benchmarks for superficial gastric lesions can be achieved outside Asian countries. We aimed to determine gastric ESD optimal proficiency benchmarks of a Western endoscopist to guide the development of training programs in Western countries. Methods We performed a retrospective analysis of consecutive ESDs performed by a single operator in Bogota, DC, Colombia. ESD was performed in 122 lesions: 104 mucosal (43% low-grade and high-grade dysplasia, 36% well-differentiated adenocarcinoma, 15% moderate and undifferentiated adenocarcinoma, and 6% large hyperplastic lesions) and 18 submucosal. We estimated case volumes required to achieve acceptable and optimal proficiency benchmarks (85-95% and >95% for en bloc resection, 80-90% and >90% for histologic margin-negative (R0) resection, and adverse events 8-16%. and <8%) and determine the number of cases needed to obtain a steady maximal procedural speed.Especialización en GastroenterologíaEspecialista en Gastroenterologí

Recursos genéticos de plantas medicinales y aromáticas :Colección, caracterización, evaluación, documentación, producción y postcosecha

IP 1120-07-12489medicinales y aromaticas y foro sobre mercadeo / Editado por Carmen RosaBonilla C, Harold Enrique Hernandez;V, Manuel Salvador Sanchez Orozco. -- Palmira : Universidad Nacional de Colombia, 2005. --156 p. ; 28 cm. -;ISBN 9588095255.;LIBRO(S): Catalogo : plantas medicinales y aromaticas / CarmenRosa Bonilla [et al.]. - Palmira :;Universidad Nacional de Colombia 2005. -- 99 p. ; 28 cm. -'- memorias: seminario internacional de planta