Ana Guzman - Academia.edu (original) (raw)

Papers by Ana Guzman

Guía de aplicación para el cumplimiento del plan anual de trabajo de auditoría interna, en las unidades de auditoría interna de los ministerios del órgano ejecutivo de El Salvador

Interacciones socioecológicas que perpetúan la degradación de la laguna de Fúquene, Andes orientales de Colombia

Ambiente y Desarrollo, 2015

Para redireccionar el manejo de sistemas ecológicos y sociales en degradación, hacia trayectorias... more Para redireccionar el manejo de sistemas ecológicos y sociales en degradación, hacia trayectorias resilientes de cambio frente a las transformaciones ambientales, es necesario no solo el conocimiento de sus componentes, sino también entender las interacciones entre ellos, para de esta manera anticipar, con menos incertidumbre, su dinámica como resultado de los posibles efectos del manejo. Con base en la aplicación de herramientas generales de modelamiento dinámico e ilustración de interacciones, se describen las relaciones sociales y ecológicas en un humedal altoandino en Colombia, la laguna de Fúquene, que lo han llevado a su actual estado de degradación. Se identifican las variables estructurantes del sistema, el patrón de interacciones y los aspectos críticos que se deben incorporar en la gestión del humedal, ausentes en el manejo actual, y que son esenciales para evitar su colapso como sistema ecológico y social.

Vidas que cuentan : literatura en familia para educación secundaria

Literatura en familia : cuento lo que sé

Boletin De La Oficina Sanitaria Panamericana, Oct 1, 1987

El género SaímoneDa comprende especies patógenas que causan una gran variedad de enfermedades ent... more El género SaímoneDa comprende especies patógenas que causan una gran variedad de enfermedades entéricas en el hombre (l-4) y en los animales (5-9). Generalmente la entrada se produce por vía digestiva y el intestino delgado es el primer lugar de la infección, aunque algunos de estos agentes patógenos pueden luego invadir otros tejidos y causar un daño más generalizado.

Forma Y Funcion, Apr 11, 2011

Este artículo se propone investigar el aporte de perspectivas traductológicas para el estudio de ... more Este artículo se propone investigar el aporte de perspectivas traductológicas para el estudio de la figura del traductor y su legado. Se centra en enfoques teóricos contemporáneos, principalmente aquellos basados en perspectivas postestructuralistas, que consideran el papel del sujeto traductor como un aspecto crucial en la traducción y los estudios literarios, y proponen maneras interesantes de abordarlo. A lo largo del artículo se cuestionan nociones como la idea de un original sacralizado, la relación entre autoría y propiedad, el ideal del significado transparente, y la tensión entre la traducción y la escritura del "original". Se presta especial atención a la importancia de ubicar históricamente la práctica del traductor, reconocer su papel como agente visible, y conceptualizar la traducción como una forma de escritura que se desarrolla en medio de complejas interacciones y negociaciones.

Una responsabilidad compartida: Oscos-Eo (Asturias): dinamización de la Reserva de la Biosfera Río Eo, Oscos y Terras de Burón

Actualidad Leader Revista De Desarrollo Rural, 2008

Evaluación de la toxicidad por administración única del producto QT2B21 en ratas Sprague Dawley

Revista Cubana De Plantas Medicinales, Apr 1, 2004

... 533,28 mg/kg). Agradecimientos. Agradecemos a los técnicos del laboratorio de Química y Toxic... more ... 533,28 mg/kg). Agradecimientos. Agradecemos a los técnicos del laboratorio de Química y Toxicología María Luisa Acevedo, Lázara Wong y Josué Rodríguez Castro su participación en este trabajo. Summary. A study of acute ...

El turismo rural: la complementariedad económica de explotaciones ganaderas

Actas De Los Xv Cursos Monograficos Sobre El Patrimonio Historico 2005 Isbn 84 8102 969 6 Pags 263 268, 2005

Diagnóstico prenatal ecocardiográfico de un feto con atresia pulmonar

Rev Cuba Pediatr, Dec 1, 1989

Un hallazgo interesante: Sirenomelia asociada con anencefalia

Medicentro, Jun 1, 1988

Base de dados : LILACS. Pesquisa : 243615 [Identificador único]. Referências encontradas : 1 [ref... more Base de dados : LILACS. Pesquisa : 243615 [Identificador único]. Referências encontradas : 1 [refinar]. Mostrando: 1 .. 1 no formato [Detalhado]. página 1 de 1, 1 / 1, LILACS, seleciona. para imprimir. Fotocópia. experimental, Documentos relacionados. Id: 243615. ...

Mecanismos de resistencia a carbapenems en P. aeruginosa, Acinetobacter y Enterobacteriaceae y estrategias para su prevención y control

Infectio, Jun 10, 2011

Page 1. 85 VOL. 10 - 2, 2006 MECANISMOS DE RESISTENCIA A CARBAPENEMS EN P. AERUGINOSA, ACINETOBAC... more Page 1. 85 VOL. 10 - 2, 2006 MECANISMOS DE RESISTENCIA A CARBAPENEMS EN P. AERUGINOSA, ACINETOBACTER Y ENTEROBACTERIACEAE Mecanismos de resistencia a carbapenems en P. aeruginosa, Acinetobacter y Enterobacteriaceae ...

Resistance mechanisms to carabapenems in P. aeuriginosa, Acinetobacter baumannii and Enterobacteriaceae and strategies for prevention and control

Infectio, Jun 1, 2006

El registro de malformaciones congénitas monitorea la eficacia del diagnóstico prenatal

Medicentro, 1993

Evaluation of the Three-Dimensional (3D) Test as a Screening Tool for the Detection of Carbapenemases in Pseudomonas aeruginosa (Pa) and Acinetobacter baumannii (Ab)

Background: Carbapenems are effective against most Gram negative nosocomial pathogens but carbape... more Background: Carbapenems are effective against most Gram negative nosocomial pathogens but carbapenemases are an emerging threat worldwide. Accurate, easy-to-perform and inexpensive diagnostic tools are needed for detection. 3D test consists of using a carbapenem susceptible organism as an indicator of the presence of a carbapenemase in a cellular extract. To detect carbapenemases, a sonicated extract of the tested organism is placed in a groove on the marginal zones of the sensidisk. Zone distortion indicates presence of the enzyme. No data regarding the sensitivity (SEN), specificity (SPE), positive predictive value (PPV) and negative predictive value (NPV) have been described for this test when compared to PCR as the gold standard. Methods: During 2007, 278 clinical isolates of Pa and Ab were sent from 14 tertiary Colombian hospitals to CIDEIM for further studies. MICs were performed by CLSI-approved broth microdilution. Carbapenem-resistant or intermediate Pa and Ab isolates were...

A Biometric Application for Thermal Facial Signatures and Templates Using Mid-Wave Infrared Images

This abstract presents biometric findings using thermal infrared imaging for the detection of the... more This abstract presents biometric findings using thermal infrared imaging for the detection of the human facial vasculature network at the skin surface. This involves the generation of thermal facial signatures and templates. A thermal infrared camera with reasonable sensitivity provides the ability to image superficial blood vessels on the human skin. The experiment consists of image processing techniques used on thermal infrared images captured using the Merlin™ InSb MWIR camera from FLIR systems with a thermal sensitivity of 0.025°C at 30°C ambient temperature. For the purpose of this experiment thermal images were obtained from 13 volunteers, they were asked to sit straight in front of the camera and a snapshot was taken of their frontal view. This process was repeated at least three more times during different days and times of the day to take into consideration subtle variations that may occur. The thermal infrared images were then processed to extract facial vasculature featur...

Recognition and binding of the PF2 lectin to α-amylase from Zabrotes subfasciatus (Coleoptera:Bruchidae) larval midgut

Journal of insect science (Online), 2014

Amylases are an important family of enzymes involved in insect carbohydrate metabolism that are r... more Amylases are an important family of enzymes involved in insect carbohydrate metabolism that are required for the survival of insect larvae. For this reason, enzymes from starch-dependent insects are targets for insecticidal control. PF2 (Olneya tesota) is a lectin that is toxic to Zabrotes subfasciatus (Coleoptera: Bruchidae) larvae. In this study, we evaluated recognition of the PF2 lectin to α-amylases from Z. subfasciatus midgut and the effect of PF2 on α-amylase activity. PF2 caused a decrease of total amylase activity in vitro. Subsequently, several α-amylase isoforms were isolated from insect midgut tissues using ion exchange chromatography. Three enzyme isoforms were verified by an in-gel assay for amylase activity; however, only one isoform was recognized by antiamylase serum and PF2. The identity of this Z. subfasciatus α-amylase was confirmed by liquid chromatography-tandem mass spectrometry. The findings strongly suggest that a glycosylated α-amylase isoform from larval Z...

Yersinia enterocolitica O:8 and O:5 lipopolysaccharide arthritogenicity in hamsters

Rheumatology (Oxford, England), 2000

To assess the arthritogenicity of Yersinia enterocolitica O:8 and O:5 lipopolysaccharide (LPS) ad... more To assess the arthritogenicity of Yersinia enterocolitica O:8 and O:5 lipopolysaccharide (LPS) administered separately as single antigens in hamsters. Male hamsters of the Syria strain were intramuscularly injected into each of the hind paws with two doses of Y. enterocolitica LPS O:8 or O:5. The measurement of swelling using a plethysmometer, the analysis of histological changes by routine techniques and the kinetics of LPS-specific antibodies and autoantibodies evaluated by enzyme-linked immunosorbent assay (ELISA) were performed. LPS O:8 was demonstrated to be more arthritogenic than LPS O:5, inducing acute arthritis on day 3 post-injection as well as more significant and longer lasting joint swelling after a second dose. LPS O:8 caused severe histopathological changes in the joints. Important LPS O:8-specific IgG responses and antibodies against type I and II collagen were observed. LPS O:8 administered alone has arthritogenic power and induces activation of autoreactive clones....

Thermal imaging as a biometrics approach to facial signature authentication

IEEE journal of biomedical and health informatics, 2013

A new thermal imaging framework with unique feature extraction and similarity measurements for fa... more A new thermal imaging framework with unique feature extraction and similarity measurements for face recognition is presented. The research premise is to design specialized algorithms that would extract vasculature information, create a thermal facial signature and identify the individual. The proposed algorithm is fully integrated and consolidates the critical steps of feature extraction through the use of morphological operators, registration using the Linear Image Registration Tool and matching through unique similarity measures designed for this task. The novel approach at developing a thermal signature template using four images taken at various instants of time ensured that unforeseen changes in the vasculature over time did not affect the biometric matching process as the authentication process relied only on consistent thermal features. Thirteen subjects were used for testing the developed technique on an in-house thermal imaging system. The matching using the similarity meas...

Atherosclerosis Supplements, 2008

The diagnosis of autosomal dominant hypercholesterolemia (ADH) in Greece has primarily been based... more The diagnosis of autosomal dominant hypercholesterolemia (ADH) in Greece has primarily been based on clinical characteristics. In fact, only a limited number of Greek patients have been screened for LDLR mutations. Over the past three years, in an attempt to enhance our limited knowledge of the molecular basis of ADH in Greece, we have screened over 140 index cases presenting with ADH.