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Search Results: 1 - 10 of 31290 matches for " Janneth Zú?iga "
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Distorsión en imágenes obtenidas mediante tomografía computarizada de cono Distortion in cone-beam computed tomography images
Gloria Baena,Janneth Zú?iga,Elizabeth Pe?a
Revista Espa?ola de Cirugía Oral y Maxilofacial , 2013,
Abstract: Objetivo: Cuantificar la distorsión presente en imágenes de diferentes regiones del cráneo y la mandíbula humanos obtenidas mediante tomografía computarizada de cono. Metodología: Mediante el trazo de 3 planos horizontales y 4 verticales se delimitaron 15 cuadrantes en 30 cráneos secos humanos con las mandíbulas articuladas y se colocaron en cada cuadrante alambres de acero inoxidable en los planos sagital, coronal y axial (transversal). A cada espécimen debidamente posicionado se le tomó una tomografía computarizada de cono (CBCT). Se midió la longitud de los alambres, tanto en los especímenes óseos (medida real), como en las imágenes (medida tomográfica), para compararlas entre sí. Como pruebas estadísticas se utilizaron el Coeficiente de Correlación de Concordancia (CCC) y la Media de las Diferencias. Resultados: Dado que el CCC encontrado en todos los cuadrantes fue siempre mayor de 0,80, las medidas tomográficas que se hagan en estos cuadrantes pueden ser consideradas estadísticamente confiables. Sin embargo, los valores obtenidos en todas las medidas espaciales revelan que en todos los cuadrantes se presenta algún porcentaje de distorsión, siendo este de magnificación para algunos o de minimización para otros. La mayor distorsión se presentó en las medidas verticales de los cuadrantes situados en la línea mediana o próximos a ella, y el menor porcentaje en las medidas horizontales. Conclusión: La distorsión presente en las diferentes regiones del cráneo y la mandíbula no es estadísticamente significativa, pero es aconsejable tenerla en cuenta para minimizar los errores que puedan presentarse en la práctica clínica. Objective: To quantify the distortion in Cone-Beam Computed Tomography images of different regions of the human skull and mandible. Methods: With the tracing of three horizontal and four vertical planes, fifteen quadrants were delimited in thirty dry human skulls with their articulated jaws. Stainless steel wires were placed in the sagittal, coronal and transverse (axial) planes in each of the quadrants. A cone-beam computerized tomography (CBCT) was taken of each correctly positioned specimen and the wire lengths were measured in the bone specimens (real measure) and in the images (tomographic measure), for comparison. The Concordance Correlation Coefficient (CCC) and the Mean Differences statistical tests were applied to the data. Results: Since the CCC found for all the quadrants was always above 0.80, the tomographic measurements can be considered statistically reliable. However, the values obtained in all the spatial measurements r
Una variación anatómica: la desembocadura aberrante del conducto torácico An anatomical variation: the aberrant termination of the thoracic duct
Elizabeth Pe?a,Janneth Zu?iga
Biomédica , 2009,
Abstract: En uno de los cadáveres disecados durante el primer semestre de 2006 en el anfiteatro del Departamento de Morfología de la Universidad del Valle en Cali (Colombia), se encontró una variación anatómica poco descrita en la literatura científica mundial. Se trata de la desembocadura aberrante del conducto torácico. Normalmente, este conducto linfático asciende en el tórax y se desvía hacia el lado izquierdo del cuello para desembocar en el confluente venoso yúgulo-subclavio izquierdo. En este cadáver masculino de etnia mestiza, el conducto se desvió hacia el lado derecho del cuello y desembocaba en la vena yugular interna derecha. El trabajo describe el origen embrionario del conducto torácico y ofrece una posible explicación para la anomalía encontrada. In a male cadaver dissected at the Department of Morphology, University del Valle, Cali (Colombia), a rarely described anatomical variation was found. It consisted of an aberrant termination or drainage of the thoracic lymph duct. Normally, this duct ascends in the thorax behind the esophagus, gradually diverges towards the left side of the neck and ends in the left jugulo-subclavian confluent--either in the internal jugular vein or in the subclavian vein. In the case of this cadaver, the thoracic duct diverged towards the right side of the neck to end in the right internal jugular vein. The present work describes the embryonic origin of the duct and offers a possible explanation for the anatomical variation encountered.
CONTROL JUDICIAL DE LOS ACTOS POLíTICOS: RECURSO DE PROTECCIóN ANTE LAS "CUESTIONES POLíTICAS"
Zú?iga Urbina,Francisco;
Ius et Praxis , 2008, DOI: 10.4067/S0718-00122008000200008
Abstract: the article do analyse the doctrine of acts of state and the "political questions", conceived today an anacronism anconciliate with the rule of law. that's doctrine have today an position in constitutional democracy, that permit to establish an limit at judicial control of the acts of states, when result of government's function the state, down the modality of power exclusive the organs supreme of state, or to concern the political questions remain in the space at deliberative public of citizenship.
DERECHOS HUMANOS Y JURISPRUDENCIA DEL TRIBUNAL CONSTITUCIONAL 1981 - 1989:: EL PLURALISMO POLíTICO E IDEOLóGICO EN CHILE
Zú?iga Urbina,Francisco;
Ius et Praxis , 2003, DOI: 10.4067/S0718-00122003000100014
Abstract: this paper deals with the opinions of the chilean constitutional court in the period 1981-1989, with emphasis on the decisions handed out on matters of freedom of conscience, free speech, and political rights.
AUTONOMíAS CONSTITUCIONALES E INSTITUCIONES CONTRAMAYORITARIAS (A PROPóSITO DE LAS APORíAS DE LA "DEMOCRACIA CONSTITUCIONAL")
Zú?iga Urbina,Francisco;
Ius et Praxis , 2007, DOI: 10.4067/S0718-00122007000200010
Abstract: this paper analyses the concept of "constitutional autonomy" and the entithys with autonomy in the organization basic of state (government). an specialy abord the autonomy as concept facility the "locus" the entithys as the constitutional court, central bank, accountatility general of republic, the finish is guard an order the constitution, and in the force as contramayoritarian institutions
Responsabilidad Constitucional del Gobierno
Zú?iga Urbina,Francisco;
Ius et Praxis , 2006, DOI: 10.4067/S0718-00122006000200003
Abstract: this paper analyses constitutional responsibility of the government and sustains that it is political and juridical, of distant penal and administrative inspiration, and that the procedure used for persecution is impeachment in political trials, demonstrating a typical case of "political justice." added to the constitutional responsibility of the government are the civil and penal responsibilities of the president and minister's public law
HERRAMIENTA DE RACIONALIDAD: UN ANáLISIS CRíTICO DE SU APLICACIóN EN LA JURISPRUDENCIA DEL TRIBUNAL CONSTITUCIONAL CHILENO
Zú?iga Anazco,Yanira;
Ius et Praxis , 2010, DOI: 10.4067/S0718-00122010000200009
Abstract: this paper proposes that the modern rationality depends on the diferents rationalities that compose the rule of law and the liberal conception of the humans rights. the principle of proportionality is a reflection of the balances required by this conception and it is an interesting theoretical proposal. however, the principle of proportionality presents some problems at the present time and therefore it's not possible to consider it as a real test of rationality.
Constitución y Dominio Público: Dominio Público de Minas y Aguas Terrestres
Zú?iga Urbina,Francisco;
Ius et Praxis , 2005, DOI: 10.4067/S0718-00122005000200003
Abstract: the article examines the ancient concept of públic property or demanio and acomodation constitutional at art. 19 no 24 of constitution. troughout the article that acomodation or legitimes constitucional of an project of royalty ad-valorem. constitution, public property of mines and water, royalty ad-valorem.
CONSTITUCIóN Y LEY INTERPRETATIVA: ALGUNAS NOTAS SOBRE UNA PARADOJA Y PELIGROS RELATIVOS A ESTE TIPO DE LEY
Zú?iga Urbina,Francisco;
Ius et Praxis , 2009, DOI: 10.4067/S0718-00122009000200009
Abstract: the paper approach theme of the constitutional interpretation by means of the "interpretative act", new class of act or statute to incorporate an classification this articyle 66 and that to posses, give to nature or material contents, an exceptional character and limited, no exempt paradox and dangers.
Justicia y racionamiento sanitario en el Plan AUGE: dilemas bioéticos asociados a la distribución de recursos escasos
Zú?iga Fajuri,Alejandra;
Acta bioethica , 2011, DOI: 10.4067/S1726-569X2011000100009
Abstract: rationing criteria in health care establish by auge, in chile, are based, mainly, in maximum efficiency, contrary to the equity principle, which should sustain health care policies in democratic societies. for the application and justification of health care rationing techniques is required not only a medical science and health care economy reflection, but a moral philosophy and bioethical reflection as well. the study of health care distributive justice theories allows to value critically health care rationing criteria used by clinical guidelines for each ges/auge pathology, which operate contrary to the equity principle.
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