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Search Results: 1 - 10 of 604233 matches for " María Teresa Garzón Martínez "
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"Es de suponerse que semejante delito haya sido cometido por mujeres...", o el miedo a las otras
María Teresa Garzón Martínez
Andamios , 2011,
Abstract: A través del análisis de un homicidio se habla de un momento específico de la historia de Bogotá, cuando el orden se orial colonial blanco entra en crisis por la aparición de nuevas clases sociales, específicamente el proletariado urbano y sus mujeres. Se muestra cómo el relato del homicidio es usado por la élite aristocrática blanca para representar el fantasma que le amenaza, generando miedo en torno a él, pero también se ilustra cómo el mismo puede generar procesos de resistencia al orden moderno/colonial.
Ampliando el campo. Estado de la cuestión de la literatura dedicada al tema de retorno de población en situación de desplazamiento
María Angélica Garzón Martínez
Boletín de Antropología , 2011,
Abstract: El presente artículo corresponde al estado de la cuestión de la bibliografía dedicada a los procesos de retorno de población en situación de desplazamiento. A través de la revisión de diferentes textos se busca construir un primer balance de dicha literatura y relacionarla con los campos de memoria y ciudadanía para, a partir de este examen, proponer nuevas miradas al tema del retorno de población en situación de desplazamiento.
Predicción del proceso de remodelación ósea para diferentes implantes de cadera al utilizar optimización topológica
Garzón-Alvarado,Diego Alexander; Roa Garzón,Máximo Alejandro; Ramírez Martínez,Angélica María;
Revista Cubana de Ortopedia y Traumatolog?-a , 2008,
Abstract: the use of topology optimization for the evaluation of total hip implants was presented. to this end, two types of endoprostheses were compared, that is, the lazcano type, the intrafemoral component (stem) of which is curved, and the straight stem. based on the evaluation of these two components, bone re-absorption and tissue density distribution after implantation was compared, allowing preliminary intrafemoral bone and intrafemoral component diagnosis, and the selection of appropriate implant. in order to make his comparison, a two-dimensional simulation using topological optimization under the finite element method was performed, which is a first approach to the problem of evaluating the type of prosthesis to be used and the behavior of bone tissue after hip implant. the results of this numerical procedure lead to an estimation of the final bone density after hip implant that is comparable with the clinical practice patterns. this process can better determine the best implant geometry, thus avoiding excessive bone mass loss.
Factores que influyen en el crecimiento endocondral: experimentos y modelos
Garzón Alvarado,Diego Alexander; Roa Garzón,Máximo Alejandro; Ramírez Martínez,Angélica María;
Revista Cubana de Ortopedia y Traumatolog?-a , 2008,
Abstract: the main factors influencing on the endochondral development at the pre- and postnatal level are presented. the most important factors of the development of the long bones may be classified into molecular and mechanical, which at the same time, may be defined as intrinsic and extrinsic. in this paper, the fundamental advances attained in the knowledge of the endochondral development are presented, for which a review of the state of the art regarding the experimental, animal and some computer models of the set of all the factors influencing on the growth of a long bone is made. the last part of the article refers to the appearance and development of the secondary centres of ossification and to how mechanics and the molecular factors are closely regulated to control total bone formation.
Una aproximación computacional para generar patrones de rugosidad superficial del pericarpio y la testa de algunas plantas: coincidencias en los resultados numéricos
Garzón-Alvarado,Diego; Ramírez-Martínez,Angélica María;
Ingeniería y Universidad , 2012,
Abstract: this article proposes a phenomenolo-gical model that describes the pattern formation of the seedcoat (seedhead) of plant seeds through reaction-diffusion equations with parameters within turing's space. with the purpose of studying pattern formation, several numerical examples concerning simplified geometries of a seed are solved. the finite element method is used for the numerical solution along with the newton-raphson method for the approximation of partial non-linear differential equations. the numerical examples show that the model may represent the formation of different types of plant seedcoats.
Descripción de la metástasis del cáncer en el tejido óseo a través de un modelo matemático
Garzón-Alvarado,Diego Alexander; Ramírez Martínez,Angélica María; Silva,Octavio;
Revista Cubana de Investigaciones Biom??dicas , 2010,
Abstract: metastasis is the fast proliferation of cancer cells, secondary tumor in a specific site, that in general lead to death. this process occur in anatomical sites providing the necessary environment of vascularization, oxygen and food allowing to camouflage its action for triggering the fast growing of cancer. prostrate and breast cancer use by example, the bone marrow for its proliferation. thus, the bone gives support for the adjustment cells to environment; mimic the genetic and molecular behavior of bone cells. in present paper the cancer metastasis process is simulated with bone marrow activation. authors propose a mathematical model involving the molecular activation by the bone tissue cells, needed for cancer proliferation. in this order of ideas two ways of secondary tumor growth is simulated according the type of metastasis: the osteosclerosis and osteolysis.
Descripción de la metástasis del cáncer en el tejido óseo a través de un modelo matemático Description of cancer metastasis in bone tissue through a mathematical model
Diego Alexander Garzón-Alvarado,Angélica María Ramírez Martínez,Octavio Silva
Revista Cubana de Investigaciones Biom??dicas , 2010,
Abstract: La metástasis es la rápida proliferación de células de cáncer, tumor secundario, en un sitio específico, que, en general, conduce a la muerte. Este proceso ocurre en sitios anatómicos que proveen el ambiente necesario de vascularización, oxígeno y alimento que le permiten camuflar su acción para desencadenar el rápido crecimiento del cáncer. El cáncer de próstata y de mama utiliza, por ejemplo, la médula ósea para su proliferación. Por lo tanto, el hueso da soporte para que las células de cáncer se adapten al ambiente, imiten el comportamiento genético y molecular de las células óseas. En este trabajo se simula el proceso de metástasis del cáncer con activación de la medula ósea. Para ello se plantea un modelo matemático que involucra la activación molecular, por parte de las células del tejido óseo, necesaria para la proliferación del cáncer. En este orden de ideas se simula dos posibles formas de crecimiento del tumor secundario según el tipo de metástasis: la osteoclerosis y la osteolisis. Metastasis is the fast proliferation of cancer cells, secondary tumor in a specific site, that in general lead to death. This process occur in anatomical sites providing the necessary environment of vascularization, oxygen and food allowing to camouflage its action for triggering the fast growing of cancer. Prostrate and breast cancer use by example, the bone marrow for its proliferation. Thus, the bone gives support for the adjustment cells to environment; mimic the genetic and molecular behavior of bone cells. In present paper the cancer metastasis process is simulated with bone marrow activation. Authors propose a mathematical model involving the molecular activation by the bone tissue cells, needed for cancer proliferation. In this order of ideas two ways of secondary tumor growth is simulated according the type of metastasis: The osteosclerosis and osteolysis.
Una formulación preliminar de tipo electromecánica para la formación de hueso en un proceso de remodelación Preliminary electromechanical formulation for bone formation in a remodeling process
Angélica María Ramírez Martínez,Diego Alexander Garzón-Alvarado
Revista Cubana de Investigaciones Biom??dicas , 2012,
Abstract: En este artículo se propone un modelo de remodelación ósea que tiene en cuenta los estímulos mecánicos y eléctricos. Bajo estos supuestos, se obtiene la distribución de masa que depende de las cargas mecánicas y eléctricas. El trabajo coloca de manifiesto la importancia del campo eléctrico en el proceso de remodelación y, propone la cuantificación de sus efectos para obtener un modelo aplicable a nivel clínico. A bone remodeling model is proposed which takes account of mechanical and electrical stimuli. Under these assumptions, a mass distribution is obtained which depends on mechanical and electrical loads. The paper reveals the importance of the electric field in the remodeling process, and proposes to quantify its effects with a view to obtaining a clinically applicable model.
Una aproximación computacional para generar patrones de rugosidad superficial del pericarpio y la testa de algunas plantas: coincidencias en los resultados numéricos
Diego Alexander Garzón Alvarado,Angélica María Ramírez Martínez
Ingeniería y Universidad , 2012,
Abstract: En este artículo se propone un modelofenomenológico que describe la formaciónde los patrones de la corteza (testa)de las semillas vegetales medianteecuaciones de reacción-difusión conparámetros en el espacio de Turing.A fin de estudiar la formación depatrones se resuelven varios ejemplosnuméricos sobre geometrías simplificadasde una semilla. Para la soluciónnumérica se utilizó el método de loselementos finitos, en conjunto con elmétodo de Newton-Raphson parala aproximación de las ecuacionesdiferenciales parciales no lineales. Losejemplos numéricos muestran que elmodelo puede representar la formaciónde diferentes tipos de cortezas desemillas vegetales.
Efficacy and safety of oral solution dosed misoprostol versus misoprostol vaginally in labour induction  [PDF]
Longinos Aceituno Velasco, María Teresa Sánchez Barroso, María Huertas Segura García, Valois González Acosta, Ramón de la Fuente Pedrosa, Ana Barqueros Ramírez, Luis Delgado Martínez, Encarna Ruiz Martínez
Open Journal of Obstetrics and Gynecology (OJOG) , 2013, DOI: 10.4236/ojog.2013.39123
Abstract:

Background: Labour induction is one of the most common medical procedures in obstetrics. The aim is to end the pregnancy when continuity is a risk to mother or fetus. Its main side effect is the increase in the cesarean rate, compared to spontaneous onset deliveries. On the other hand, mortality and morbidity in cesareans are higher. The most common pharmacological drugs used for induction are prostaglandins: dinoprostone and misoprostol. The “gold standard” for labour induction is vaginal misoprostol. The oral route is also effective and also has several benefits like faster onset and easear administration. In recent years several publications state that the administration of misoprostol oral solution, given in doses gradually, is associated with a lower cesarean and hyperstimulation rate than the cases where vaginal misoprostol has been used in pregnant women with unripe cervix. Furthermore, being its half life shorter, it may be very useful in case of uterine hyperstimulation and, probably, a high percentage of women prefer this oral administration to the vaginal one. The objective of this study is to compare the efficacy, safety and side effects on mother and fetus on use of oral versus vaginal administration for induction of labour for prolonged gestation (41 weeks) and premature rupture of membranes, both with live fetus. Methods/Design: Design: double blind controlled trial. Study population: Pregnant women whose labour will be induced due to premature rupture of membranes or prolonged gestation. Inclusion Criteria: 1) Bishop Test equal to or less than 7; 2) Single pregnancy; 3) Pregnancy at term (37 - 42 weeks); 4) No history of uterine surgery; 5) Cephalic presentation; 6) Live fetus; 7) No prostaglandins contraindications. Discussion: Nowadays induction rates are very high, ranging from 25% to 30% approximately. In these cases caesarean rates are higher than when the delivery starts spontaneously. That is one of the main reasons why caesareans have increased, mainly in the cases of nuliparous women with immature cervix. If we can prove the hypothetical good results obtained through the use of dosed oral misoprotol, we will be able to reduce the number of induced deliveries by cesarean, and so improve the levels of security for the mother and the foetus, and, as a consequence, provide a higher quality of medical attention to the newborn and the mother.

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