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Search Results: 1 - 10 of 1150 matches for " Duque "
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Liver transplant in HCC
Sergio I. Duque Duque
Iatreia , 2007,
Abstract: Hepatocellular carcinoma (HCC) is the fifth most common cancer worldwide, and is the leading cause of death in cirrhotic individuals. 80% of HCC develops in cirrhotic patients. Unfortunately only 20 to 25% of patients can have a radical treatment, like resection, liver transplantation (LT), or percutaneous ablation. The other 75 to 80% of patients can only have supportive care. There is no evidence to establish the optimal first-line treatment for early HCC (one tumor of 5 cm or less,) in patients with well preserved liver function, because of the lack of RCTs comparing these radical therapies. Resection and transplantation achieve a very good outcome (5-year survival of 60 to 70%) but with very different recurrence rates (60-70% and 15-20% respectively). Due to the lack of liver donors, these two techniques compete as the first option for treatment in cirrhotic patients with well preserved liver function and only one tumor. There is no question in considering LT as the best option for patients with liver function impairment (Child-Pugh B-C patients) and early tumors (less than three tumors of less than three centimeters). LT provides cure of both the neoplastic disease and the underlying liver disease. There are a few numbers of reports that shows a decrease in the overall survival, from an intention-to treat perspective as a result of the impact of dropouts from the waiting list because of death or progression. These numbers can be as high as 20%. Adjuvant therapies during the waiting period, although intuitively effective, have not had an impact on the outcome. Expansion of the accepted Milan criteria (single nodule <5 cm, two or three nodules <3 cm) has been advocated by some groups, but there are few data to support the benefit of this policy, which otherwise would make the management of the shortage of donors more difficult and less cost effective. Living donor liver transplantation (LDLT) has been mostly applied in patients beyond the Milan criteria, and thus the results should be analyzed with caution. Maybe in the future, when other parameters of the tumor are incorporated in the preoperative protocol, like: tumor doubling time, micro vascular invasion, number of mitoses, and histological grading, the question of what patient really benefits of expanding criteria can be answer, the expansion of the standard criteria is going to be more benefit for the patient due to the less influence in prognosis. Treatment of HCC to reduce waiting list dropout has become a priority at most centers. Ablative therapies (percutaneous or laparoscopic) and chemo
El gerente p?oblico: un profesional indispensable para el desarrollo
Duque, Fernando;
Cadernos EBAPE.BR , 2006, DOI: 10.1590/S1679-39512006000400004
Abstract: in this paper i describe what is the professional called "public manager". first, it is a conceptual description, therefore, i will user a metaphor to illustrate it.. second, i discuss the main functions that such a professional should perform. further i dis-cuss the necessary course structure for a appropriate education of a public manager. finally i analyze chilea′s political system and call attention for the need of a well-educated public manager.
A review of corrosion by biogenic sulphide in the oil industry
Duque,Zoilabet;
Revista Técnica de la Facultad de Ingeniería Universidad del Zulia , 2007,
Abstract: there exist serious problems in the water-injection systems of the oil industry due to microbiologically induced corrosion, associated with the presence of biogenic h2s. several investigators consider that the presence of sulphate-reducing bacteria is the principal cause of bacterial corrosion in natural-water storage and distribution systems. but there are other groups of bacteria h2s producers that are not considered in current microbiological treatments and controls, all caused by the insufficiency of studies that determine the groups of organisms responsible of its production. this review describes the presence of other anaerobic microorganisms that produce this aggressive metabolite or its derivatives in water-injection systems in the oil industry.
Chile y la globalización: una dependencia potencialmente peligrosa Chile and globalization: a potentially dangerous dependence
Fernando Duque
Revista de Administra??o Pública , 2007, DOI: 10.1590/s0034-76122007000100002
Abstract: Este ensayo tiene varios propósitos. Primero, discutir el concepto de globalización en sus diferentes acepciones, particularmente, la económica, la política y la cultural. En segundo lugar, intenta tratar de describir y demostrar el enorme grado de dependencia que Chile tiene del actual proceso globalizador. En tercer término, se trata de se alar que la actual globalización, es un proceso similar al que ha ocurrido en otras épocas de la historia. Especialmente se comenta en detalle el análisis del profesor Ferguson quien compara la actual globalización con la que ocurrió a fines del siglo XIX y comienzos del XX. Se concluye que el actual proceso de globalización es tan volátil, inestable y peligroso como fue la globalización decimonónica. Se concluye también indicando que es altamente probable que el actual proceso globalizador, termine en forma similar a como terminó la globalización 1870-1914. Finalmente se argumenta que debido a que Chile está geográficamente ubicado en la parte más austral del hemisferio sur, es probable que el país salga relativamente intacto de la conflagración que se avecina. This article begins by discussing the different meanings of globalization, especially the economic, political and social ones. It then describes how Chile is greatly dependent on the current globalization process, as well as points out that this process is similar to others that have taken place in other times in history. It discusses in detail professor Ferguson's analysis comparing the current globalization with the one that occurred at the end of the 19th century and the beginning of the 20th. The article concludes that the current process is as volatile, unstable and dangerous as that of the 19th century, and that it is highly probable that it will end as that of 1870-1914. It also argues that since Chile is on the southernmost part of the southern hemisphere, it will be relatively preserved from the oncoming conflagration.
Alimentación, género y pobreza en los Andes ecuatorianos
Juliana Duque
Revista de Estudios Sociales , 2008,
Abstract:
Anomalías y mejoras en las estadísticas de migración internacional durante las últimas décadas
Duque, Ignacio
Revista Internacional de Sociologia , 2011,
Abstract: Why has international migration statistics had short improvements during the last century? Why are they partially worsening? The text analyzes the main international reports on quality of international flux and tests the more relevant hypothesis about this intriguing anomaly in the landscape of Official Statistics. A detailed review is made about migration flux inside European Union and the situation of Spain in this field. The paper presents a deep review of the best initiatives and practices for improving the knowledge of human flux associated to globalization and the relevance of accurate statistics for any democratic debate about migration trends and migration policies. Por qué se ha avanzado poco, o incluso se ha retrocedido, en la disponibilidad de estadísticas de migración internacional con una aceptable cobertura y calidad en el último siglo? En este artículo se hace un repaso de los principales diagnósticos internacionales y se discuten distintas hipótesis explicativas de esta anomalía en la estadística oficial, detallando como ejemplo los flujos interiores a la Unión Europea y revisando la situación espa ola. Por otra parte, se mencionan las iniciativas más relevantes de mejora, así como las consecuencias de todo este panorama en relación con el debate democrático sobre los flujos y las políticas migratorias a nivel internacional.
PROCESO NARRATIVO Y RELACIóN CONTEXTUAL DE AYUDA, ASOCIADOS AL CONSUMO DE SUSTANCIAS PSICOACTIVAS
Rosa Duque
Revista Vanguardia Psicológica , 2012,
Abstract: This paper shows an investigation-intervention work of a systemic-constructionist approach based in the conversational-narrative, where the phenomenon of this study was made in a psychiatric hospital and a therapeutics community, were the narrative process (in the contextual help connection identified among institution-family-patient) and its association with the organization of psychoactive substance consumption as a problem and its influence in the maintenance, mobilization or transformation of such problem. It was seek to generate process comprehension where the actors co-participated in the history construction which it could allow or not the family development. In connection with the method, it is assumed a constructionist systemic perspective with a qualitative focus, design of conversational scenarios based on reflexive teams facilitators of the emergency of diverse voices and versions of the phenomenon, with two patients with problematic use of SPA, their families and professionals in each institution in charge of their treatment. As a result it emerge an important connection among the problem construction and the organization of relationships, identities and action paths of these actors.
Editorial
Edison Duque
Scientia Et Technica , 2007,
Abstract:
Una revisión de la corrosión por sulfuro biogénico en la industria petrolera A review of corrosion by biogenic sulphide in the oil industry
Zoilabet Duque
Revista Técnica de la Facultad de Ingeniería Universidad del Zulia , 2007,
Abstract: La industria petrolera en sus sistemas de inyección de agua para la recuperación secundaria de crudo ha presentado problemas de corrosión microbiana; tradicionalmente éstos se han asociado a bacterias reductoras de sulfato, productoras de H2S, lo cual es considerado por diferentes investigadores del área, como el principal causante de corrosión bacteriana en los sistemas de distribución de aguas naturales centrando el control de tratamiento químico en este grupo bacteriano. A todo ello la problemática microbiana sigue siendo recurrente a nivel mundial. Por lo cual resulta significativo investigar la presencia de otros microorganismos anaeróbicos productores de este metabolito agresivo o de sus derivados en los sistemas de inyección de agua en la industria petrolífera. Este trabajo presenta una revisión de la sulfidogenesis y la corrosividad promovida por estos microorganismos, resaltando la necesidad de indagar la participación de diferentes grupos anaeróbicos y su consideración a efectos de realizar un mejor control de la corrosión bacteriana. There exist serious problems in the water-injection systems of the oil industry due to Microbiologically Induced Corrosion, associated with the presence of Biogenic H2S. Several investigators consider that the presence of Sulphate-Reducing Bacteria is the principal cause of bacterial corrosion in natural-water storage and distribution systems. But there are other groups of bacteria H2S producers that are not considered in current microbiological treatments and controls, all caused by the insufficiency of studies that determine the groups of organisms responsible of its production. This review describes the presence of other anaerobic microorganisms that produce this aggressive metabolite or its derivatives in water-injection systems in the oil industry.
COMENTARIO A: "Quantitative biostratigraphic model for the Tertiary of the Lower Magdalena Basin, colombian caribbean" por Cuartas, Jaramillo, & Martínez, 2006
Hermann Duque
CT&F - Ciencia, Tecnología y Futuro , 2006,
Abstract:
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