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Search Results: 1 - 10 of 212328 matches for " Saúl; "
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THREE-DIMENSIONAL STRUCTURE OF Bacillus thuringiensis TOXINS: A REVIEW
LóPEZ PAZOS,SA;
Acta Biológica Colombiana , 2007,
Abstract: structure-based protein engineering of bacillus thuringiensis d-endotoxins may direct the search for variants with broader susceptible species spectra, optimal potency, and stability properties. here, we revised the more important characteristics of the cry and cyt proteins three-dimensional structure; it is possible to conclude that an obvious general model exists with specific properties according to its function and target organism
Qué Piensan los Profesores sobre sus Clases: Estudio sobre las Creencias Curriculares y las Creencias de Actuación Curricular
Contreras,Saúl A;
Formación universitaria , 2008, DOI: 10.4067/S0718-50062008000300002
Abstract: in order to describe the curricular beliefs, curricular action beliefs and the relationship between them, a quantitative exploratory study that analyzes the responses given in a questionnaire applied to a group of 53 chileans science and mathematics teachers was conducted. the statistical analysis indicated that chilean teachers are more constructivists in what they think that ?it should be done? than in what they ?believe they do?. this means they are rather traditional regarding the teaching practice. based on the results of this analysis, it is important to explore the teachers? beliefs in order to begin improving teaching practices. in other words, it is necessary to determine what and how certain aspects of the teachers? thinking support or prevent their professional knowledge and development.
Evolución del tratamiento neuroquirúrgico de la patología hipofisaria: Experiencia de 800 casos
Krivoy O,Saúl;
Gaceta Médica de Caracas , 2010,
Abstract: pituitary tumors are among the most common intracranial neoplasias (10 % to 15 %). the purpose of this study is to present the author?s experience in the surgical management of 800 pituitary tumors based on the study protocols applied in the pituitary units of the miguel pérez carre?o hospital and university hospital, and in the author?s private practice. the most frecuent findings and diagnostic techniques are presented, highlighting the role of magnetic resonance and cerebral angiography. trans-sphenoidal and trans-cranial surgical techniques are analyzed. the advantage of the trans-sphenoidal technique, the improvements made to the surgical technique, and the use of neuro-endoscopy are presented. the importance of a multi-specialty team is stressed. this experience allowed to reduce the associated morbidity and mortality by shortening surgical time and improving recovery, quality of life, and prognosis.
Microcirugía trans-esfenoidal de la hipófisis: Revisión de 400 casos
Krivoy,Saúl;
Gaceta Médica de Caracas , 2002,
Abstract: pituitary tumors are among the most common intracranial neoplasias (10 to 15%). the purpose of this study is to present the author?s experience in the surgical management of 400 pituitary tumors based on the study protocols utilized in the pituitary units of the miguel perez carre?o and university hospital and the author?s private practice. it presents the more frequent findings and diagnostic techniques, highlighting the role of mri and cerebral angiography. trans-sphenoidal and trans-cranial surgical techniques were analyzed. the advantage of the trans-sphenoidal technique is presented, as well as the improvements made to the surgical technique and the use of neuroendoscopy. the importance of a multi-specialty team is stressed. this experience allowed to reduce the associated morbidity and mortality by shortening surgical time and improving recovery. this translated into a more rapid return to regular activities, better quality of life and prognosis for the patient
Neuroendoscopia: nuevas fronteras en neurocirugía.
Krivoy,Saúl;
Gaceta Médica de Caracas , 2002,
Abstract: one of the latest additions to the management of deeply located lesions of the central nervous system, is the use of endoscopy, a technology that is routinely used in other specialties. this technology has proven to be of diagnostic and therapeutic value. its use has improved morbidity and mortality rates, shortened surgical time and reduced anesthesia-related risks by even allowing some procedures to be performed under local anesthesia. it is a minimally invasive technique that has benefited the patient and has significantly improved the surgical management of certain conditions. it is the purpose of this study to present the author′s experience in the introduction of this new technique in venezuela where no previously documented studies on the subjects exist. the author presents his experience of 200 cases where neuroendoscopy was used and an analisys of its indications, technical aspects and its complications.
El ejercicio de la Cirugía en Colombia: una encuesta nacional y algunas reflexiones sobre sus resultados
Rugeles,Saúl Javier;
Revista Colombiana de Cirugía , 2009,
Abstract: introduction: surgery has been an evolving discipline in colombia during the last 20 years. dramatic changes in the health system and the introduction of new surgical technologies and tendencies have had a very strong effect over surgical practice and reimbursement. this paper describes main findings of a comprehensive survey designed and conducted by the colombian association of surgery (cas). methods: the semi-structured survey was designed by one special committee at the cas. one market research company was contacted and implemented the survey to surgeons across the country during 180 days. data was compiled and statistical analysis performed in anonymous way. results: 48% of the cas fellows responded the survey. the surgical practice in colombia is characterized for weeks plenty of hours of work, high number of general surgery procedures and a tendency toward fellowship graduate studies. most surgeons work at more than two health care institutions and receive a low reimbursement. conclusions: surgical practice in colombia has been affected by new local and worldwide regulations in medical practice. most general surgeons seek for fellowship education. surgical education must be reevaluated to prepare future surgeons to be successful in this new job environmental.
Nutrición y metabolismo en Cirugía: Conferencia Rafael Casas Morales 2009
Rugeles,Saúl Javier;
Revista Colombiana de Cirugía , 2009,
Abstract: malnutrition is a common condition in surgical patients, and is associated with high morbidity and mortality rates. malnutrition is also related to higher cost for the health system and longer hospital stay. the impact of malnutrition and the need for nutritional treatment in surgery has been widely demonstrated. this article describes the effects of malnutrition on surgical disease and the metabolic response to injury, focusing on the relationship between nutritional status and the outcome of surgery. the article also shows the scientific evidence supporting the modern specialized nutritional therapy and its impact on surgical morbidity and mortality a review of the evidence on the relationship between diet and cancer is presented as a reason for surgeons to assume the nutritional and dietary advice of their own patients. finally, the author remarks the need for nutritional education in schools of medicine and surgical residence programs.
Violencia y salud en Colombia
Franco Agudelo,Saúl;
Revista Panamericana de Salud Pública , 1997, DOI: 10.1590/S1020-49891997000200002
Abstract: in colombia, violence seems uncontrollable. along with massacres and group killings of astonishing cruelty, there are also kidnappings and disappearances, abuse of children and the elderly, and rape of young adolescents. every day, without respite, colombians are witnesses or victims of street cri mes as well as racial, sexual, and socioeconomic discrimination. unwillingly, they become agents of aggression in public transport, at home, at school, and at work. colombia has the highest rates of mortality from homicide in the world. apart from the enormous institutional burden that violence imposes on the health services and forensic medicine, it now constitutes the principal public health problem in the country. to confront it, the health sector must develop policies and finance actions, develop innovative ways to train personnel, implement public education processes, and devote more effort and greater creativity to research, which up to now has provided some, but not enough, important answers. violence, which is the substitution of force for any type of dialogue, must be conidered within the context of life and health. this it not merely an attempt to rationalize violence, much less to substitute words or reflection for action, but rather an attempt to understand it in depth in order to search for alternatives. with that goal, this article analyzes the subject of violence in colombia, principally from the perspective of its effect on the health of the citizens and its implications for the health sector. the author fully recognizes the subjectivity and limitations of the views he expresses herein.
Violence and health in Colombia
Franco Agudelo,Saúl;
Revista Panamericana de Salud Pública , 1997, DOI: 10.1590/S1020-49891997000900002
Abstract: in colombia, violence seems uncontrollable. along with massacres and group killings of astonishing cruelty, there are also kidnappings and disappearances, abuse of children and the elderly, and rape of young adolescents. every day, without respite, colombians are witnesses or victims of street crimes as well as racial, sexual, and socioeconomic discrimination. unwillingly, they become agents of aggression in public transport, at home, at school, and at work. colombia has the highest rates of mortality from homicide in the world. apart from the enormous institutional burden that violence imposes on the health services and forensic medicine, it now constitutes the principal public health problem in the country. to confront it, the health sector must develop policies and finance actions, develop innovative ways to train personnel, implement public education processes, and devote more effort and greater creativity to research, which up to now has provided some important, albeit insufficient, responses. violence, which is the substitution of force for any type of dialogue, must be considered within the context of life and health. doing so is not an attempt to rationalize violence, much less to substitute words or reflection for action, but rather an attempt to understand it in depth in order to search for alternatives. with that goal, this article analyzes the subject of violence in colombia, principally from the perspective of its effect on the health of the citizens and its implications for the health sector. the author fully recognizes the subjectivity and limitations of the views he expresses herein.
Dos derechos al revés: reflexiones sobre los derechos a la vida y a la paz en el mundo actual
Franco,Saúl;
Salud Colectiva , 2007, DOI: 10.1590/S1851-82652007000300008
Abstract: this document addresses the concepts of life and peace, as well as the understanding of these two concepts as human rights. it also analyzes how both rights are being severely and systematically violated within and among countries, in the present state of world affairs. departing from the contributions of different fields towards the concept of life, this article focuses on the recognition of life as the essential right and as the basis for all other rights. the author then presents a realistic and worrisome view of the current state of life and peace as human rights. statements are backed by data on homicides, forceful displacements, kidnappings and refugees in some of the most representative armed conflicts of today, including the invasion and subsequent war in iraq and the armed conflicts of sudan, afghanistan, israel-palestine and colombia. the article concludes with the author's view of possible mechanisms and actions whereby individuals could contribute to the promotion of life and peace, and to a reduction in the violation of these two human rights.
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