Proceso Lecto-escritor: piedra angular de la enseñanza

Leer es despertar en un mundo propio donde recobra vida la imaginación, donde es el lector quien decide lo malo y lo bueno, es escuchar la voz de cada personaje, ver sus movimientos, sentir sus emociones, es caminar en un castillo acuático buscando el verdadero color de las mariposas. Escribir es construir una nave mágica usando sus propios conceptos, moldeando el barro del conocimiento, sintiendo la aspereza de las dificultades con la ilusión de encontrar suavidad en la sonrisa que reposa sobre una idea expresada.&nbsp

Proceso Lecto-escritor: piedra angular de la enseñanza

Leer es despertar en un mundo propio donde recobra vida la imaginación, donde es el lector quien decide lo malo y lo bueno, es escuchar la voz de cada personaje, ver sus movimientos, sentir sus emociones, es caminar en un castillo acuático buscando el verdadero color de las mariposas. Escribir es construir una nave mágica usando sus propios conceptos, moldeando el barro del conocimiento, sintiendo la aspereza de las dificultades con la ilusión de encontrar suavidad en la sonrisa que reposa sobre una idea expresada.&nbsp

Deconstruir la privacidad. La mujer como sujeto

La naturaleza de esta investigación surge de derrocar el imaginario convencional en el que elcuerpo femenino se encuentra como objeto en el ámbito artístico, buscando nuevos lenguajesdonde poder expresarse de diferentes maneras poniendo la cotidianidad e intimidad comotema central y evitando por completo la sexualización que le rodea; desde exaltando suausencia corporal, trasladando la cotidianidad íntima al ámbito público y descontextualizandolos espacios del hogar, del cual nacen estas nuevas expresiones. Se realizará un repaso de lamujer vista desde los ojos del museo hasta llegar a estas nuevas formas de expresión corporalfemenina.<br /

Artemisia thuscula Cav.: antibacterial, antifungal activity of the plant extracts and associated endophytes

4 páginas, 2 tablas.In this paper we are presenting preliminary results for the antifungal and antibacterian activity of the Artemisia thuscula Cav. all together with the endophytic communities encountered in symbiosis with this specie. This plant is endemic for the Canary Islands and it is recognised for its traditional medicinal use (like other species of the same genus in the rest of the world) and for being a functional repellent of insects. The ethanol extracts tested showed an interesting activity against the phytopathogenic fungi Fusarium monilforme, F. solani and F. oxysporum and antibiotic activity against 2 Gram-positive bacteria: Bacillus cereus and Streptomyces griseus, in an primary screening. The diversity of endophytes found in this plant, especially in the roots, showed promising results supporting further work on this species.This publication has been financed by the project: ‘Bioprospection of endophytes in medicinal plants for biopesticides production’ MCIN- FCCI. 2009. Ref. ACI2009-0900Peer reviewe

Prevalencia de fístulas vaginales en Pacientes con cáncer de cuello Uterino, sometidas a tratamiento de Radioterapia Externa e Intracavitaria en el Hospital Oncológico Solca Quito: Vaginal fistulas prevalence in cervical cancer patients, treated with external and in-tracavitary radiotherapy in the Oncological Hospital Solca Quito

Treatment of cervical cancer in locally advanced stages is based primarily on ionizing radiation therapy and radiosensitizing chemotherapy. This type of therapy has among its most serious and morbid adverse effects,the generation of vaginal fistulas. It is important to establish the punctual prevalence of this adverse effect inour environment as well as to establish the risk factors for the generation of fistulas associated with the treatment. An observational, retrospective, study was conducting. Patients who received external radiotherapy 2D or 3D mode plus brachytherapy or external boost were enrolling, with or without concurrentchemotherapy. The specific prevalences of fistulas were obtein for each case and the respective association with the controls was make using the Odds Ratio. The punctual prevalence of fistulas in our center was 2.93%, 1.62% were under conventional radiotherapy and 1.31% conformational, 1.62% patients who receivedconcurrence and 1.31% who did exclusive radiotherapy. The proportion of fistulas was 50% for external boost, 33% for brachytherapy and 17% without boost or brachytherapy. The external boost vs. brachytherapyshowed an OR = 4.77 95% CI (1.66 - 13.65). The prevalence of fistulas in our center is in accordance with the world reality; however, the association of external radiotherapy boost with more fistulas vs brachytherapyreinforcement shows the importance of bringing the largest number of patients to brachytherapy.El tratamiento del cáncer de cuello uterino en estadios localmente avanzados se basa fundamentalmente en la terapia con radiaciones ionizantes y la quimioterapia radiosensibilizadora. Este tipo de terapia tiene entre sus efectos adversos más graves y mórbidos, la generación de fístulas vaginales. Es importante establecer la prevalencia puntual de este efecto adverso en nuestro medio así como establecer los factores de riesgo para la generación de fístulas asociados al tratamiento. Se realizó un estudio de tipo observacional, retrospectivo. Se registraron las pacientes que recibieron radioterapia externa ya sea en modalidad 2D o 3D más braquiterapia o refuerzo externo de dosis, con quimioterapia concurrente o sin esta última. Se obtuvieron las prevalencias puntuales de fístulas para cada caso y se efectuó la respectiva asociación mediante la Razón de Momios La prevalencia puntual de fístulas en nuestro centro fue del 2.93%, 1.62% fueron bajo modalidad de radioterapia convencional y 1.31% conformacional, 1.62% pacientes que recibieron concurrencia y 1.31% quienes hicieron Radioterapia exclusiva. La proporción de fístulas fue del 50% para refuerzo externo, 33% para braquiterapia y 17% sin refuerzo. El refuerzo externo vs braquiterapia mostro un OR=4.77 IC 95% (1.66 – 13.65) La prevalencia de fístulas en nuestro centro está acorde a la realidad mundial, sin embargo la asociación del refuerzo de radioterapia externa con mayor cantidad de fístulas vs el refuerzo con braquiterapia pone de manifiesto la importancia de llevar el mayor número de pacientes a braquiterapia

Riesgos del Emprendedor

ColcienciasUniversidad EAFIT - Departamento de Contaduría Pública. Semillero de Investigación en Control, Auditoría y Riesgos (SICAR)p. 9

Comparación de la dosis estimada en recto y vejiga con planificación de Braquiterapia 3D vs 2D: Estimated dose comparison in the rectum and bladder with 3D vs. 2D brachytherapy planning

Cervical cancer is one of the main female neoplasia the treatment requires multidisciplinary management.Intracavity brachytherapy occupies a fundamental role. Brachytherapy represented an important improvement in the last years with the growth of the three-dimensional planning. But in many countries, two dimensional planning is still the only option of treatment. We seek to establish the benefit that is obtained with brachytherapy in three dimensions, in the protection to organs of risk. This is an observational, longitudinal cohort study; we extrapolated treatment schemes in three dimensions, to planning in two dimensions. Then turned to move this planning, to the tridimensional system again and we got doses- olume histograms of rectum and bladder. Finally, we determined the average of doses received in 2cc of rectum and bladder in three-dimensional planning and compared with those obtained in the two dimensional planning, using Student’s T test. The dose average in 2cc bladder in two-dimensional plan was 5.5 Gy. And in three-dimensional plan was 5.1 Gy (p=0.01). The dose average in 2cc rectum in two-dimensional plan was 2.8 Gy, and in three-dimensional plan was 3.0 Gy (p=0.06). This study gives an approximation to the dosimetry improvement obtained through the using of the three- dimensional planning, for the reduction of doses in the bladder.El cáncer de cuello uterino se ubica entre las principales neoplasia femeninas, su tratamiento requiere del manejo multidisciplinario, donde la braquiterapia ocupa un sitial fundamental. Está ha presentado una importante evolución en los últimos años con el surgimiento de la planificación en tres dimensiones. En muchas partes del mundo, la modalidad en dos dimensiones sigue siendo la única opción de tratamiento. Como objetivo buscamos establecer el beneficio que se obtiene con braquiterapia en tres dimensiones sobre la técnica convencional de braquiterapia, en la protección a los órganos de riesgo. Planteamos un estudio observacional de cohorte longitudinal, extrapolando planificaciones de tratamiento en tres dimensiones, a planificación en dos dimensiones. Posteriormente se volvió a trasladar esta planificación, al sistema en tres dimensiones y se obtuvo histogramas dosis volumen de recto y vejiga. Determinamos el promedio de dosis recibidas en 2 cc de recto y vejiga en la planificación tridimensional y comparamos con las obtenidos en la planificación en dos dimensiones, mediante la T de Student. El promedio de la planificación de las dosis en vejiga con dos dimensiones fue 5.5 Gy, y con tres dimensiones fue 5.1 Gy, p= 0.01. El promedio de la planificación de las dosis en recto con dos dimensiones fue 2.8 Gy; y con tres dimensiones fue 3.0 Gy p= 0.06. Este estudio nos da una aproximación al beneficio dosimétrico que se obtiene mediante el uso de la planificación tridimensional, para la reducción de dosis que llega a vejiga

Does the disturbance hypothesis explain the biomass increase in basin-wide Amazon forest plot data?

Positive aboveground biomass trends have been reported from old-growth forests across the Amazon basin and hypothesized to reflect a large-scale response to exterior forcing. The result could, however, be an artefact due to a sampling bias induced by the nature of forest growth dynamics. Here, we characterize statistically the disturbance process in Amazon old-growth forests as recorded in 135 forest plots of the RAINFOR network up to 2006, and other independent research programmes, and explore the consequences of sampling artefacts using a data-based stochastic simulator. Over the observed range of annual aboveground biomass losses, standard statistical tests show that the distribution of biomass losses through mortality follow an exponential or near-identical Weibull probability distribution and not a power law as assumed by others. The simulator was parameterized using both an exponential disturbance probability distribution as well as a mixed exponential–power law distribution to account for potential large-scale blowdown events. In both cases, sampling biases turn out to be too small to explain the gains detected by the extended RAINFOR plot network. This result lends further support to the notion that currently observed biomass gains for intact forests across the Amazon are actually occurring over large scales at the current time, presumably as a response to climate change

Ecosystem heterogeneity determines the ecological resilience of the Amazon to climate change

Understanding how changes in climate will affect terrestrial ecosystems is particularly important in tropical forest regions, which store large amounts of carbon and exert important feedbacks onto regional and global climates. By combining multiple types of observations with a state-of-the-art terrestrial ecosystem model, we demonstrate that the sensitivity of tropical forests to changes in climate is dependent on the length of the dry season and soil type, but also, importantly, on the dynamics of individual-level competition within plant canopies. These interactions result in ecosystems that are more sensitive to changes in climate than has been predicted by traditional models but that transition from one ecosystem type to another in a continuous, non–tipping-point manner.Organismic and Evolutionary Biolog

First Colombian Multicentric Newborn Screening for Congenital Toxoplasmosis

Congenital toxoplasmosis can result in permanent sequel as blindness or neurological damage in children and it seems to be more severe in South America than in other continents. There is a lack of information about this frequency in Colombia, where no control program is established, although it is a recognized cause of potentially preventable congenital blindness. We propose the first Colombian multicentric study to determine the frequency and impact of congenital toxoplasmosis. More than 15,000 newborns in seven cities were studied. Newborns were tested at birth by doing a cord blood test for toxoplasmosis. Additionally, children from mothers with history of toxoplasmosis acquired during pregnancy were recalled for a follow-up. The program identified fifteen children otherwise undiagnosed; three of these children died as consequence of congenital toxoplasmosis. The frequency of the congenital infection varied significantly between cities, being higher in Armenia and Florencia, intermediate in Bogota, Bucaramanga and Barranquilla and very low in western cities such as Cucuta and Riohacha. For the first time a significant correlation was found between mean rainfall at the city and the incidence of this congenital infection