Validación de la herramienta “Calidad Car” para modelación de la calidad agua. Caso de estudio: Río Magdalena

Trabajo de InvestigaciónSe realizó la validación de la herramienta CALIDAD CAR a través de un ejercicio de modelación de calidad de agua comparando los resultados con una herramienta ampliamente utilizada en el país como lo es QUAL2KW utilizando como caso de estudio un tramo del río Magdalena circundante a la ciudad de Neiva. Modelando a partir de la información recopilada de la campaña de monitoreo realizada en el año 2018 por Construcsuelos suministros LTDA y el estudio de modelación del agua código HITGInDiDe180502 del 2018 de HIDROSAN ingenieros consultores. Donde se tiene como propósito evaluar la calidad del agua del río Magdalena analizando su problemática que afecta directamente al municipio de NeivaINTRODUCCIÓN 1. RESUMEN 2. ANTECEDENTES 3. JUSTIFICACIÓN 4. PLANTEAMIENTO Y FORMULACIÓN DEL PROBLEMA 5. MARCO DE REFERENCIA 6. MARCO CONCEPTUAL 7. ESTADO DEL ARTE 8. OBJETIVOS 9. ALCACES Y LIMITACIONES 10. METODOLOGÍA 11. RESULTADOS Y DISCUSIÓN 12. CONCLUSIONES Y RECOMENDACIONES BIBLIOGRAFÍA ANEXOSPregradoIngeniero Civi

The HST/ACS Coma Cluster Survey. II. Data Description and Source Catalogs

The Coma cluster was the target of a HST-ACS Treasury program designed for deep imaging in the F475W and F814W passbands. Although our survey was interrupted by the ACS instrument failure in 2007, the partially completed survey still covers ~50% of the core high-density region in Coma. Observations were performed for 25 fields that extend over a wide range of cluster-centric radii (~1.75 Mpc) with a total coverage area of 274 arcmin^2. The majority of the fields are located near the core region of Coma (19/25 pointings) with six additional fields in the south-west region of the cluster. In this paper we present reprocessed images and SExtractor source catalogs for our survey fields, including a detailed description of the methodology used for object detection and photometry, the subtraction of bright galaxies to measure faint underlying objects, and the use of simulations to assess the photometric accuracy and completeness of our catalogs. We also use simulations to perform aperture corrections for the SExtractor Kron magnitudes based only on the measured source flux and half-light radius. We have performed photometry for ~73,000 unique objects; one-half of our detections are brighter than the 10-sigma point-source detection limit at F814W=25.8 mag (AB). The slight majority of objects (60%) are unresolved or only marginally resolved by ACS. We estimate that Coma members are 5-10% of all source detections, which consist of a large population of unresolved objects (primarily GCs but also UCDs) and a wide variety of extended galaxies from a cD galaxy to dwarf LSB galaxies. The red sequence of Coma member galaxies has a constant slope and dispersion across 9 magnitudes (-21<M_F814W<-13). The initial data release for the HST-ACS Coma Treasury program was made available to the public in 2008 August. The images and catalogs described in this study relate to our second data release.Comment: Accepted for publication in ApJS. A high-resolution version is available at http://archdev.stsci.edu/pub/hlsp/coma/release2/PaperII.pd

Study protocol for the multicentre cohorts of Zika virus infection in pregnant women, infants, and acute clinical cases in Latin America and the Caribbean: The ZIKAlliance consortium

Background: The European Commission (EC) Horizon 2020 (H2020)-funded ZIKAlliance Consortium designed a multicentre study including pregnant women (PW), children (CH) and natural history (NH) cohorts. Clinical sites were selected over a wide geographic range within Latin America and the Caribbean, taking into account the dynamic course of the ZIKV epidemic. Methods: Recruitment to the PW cohort will take place in antenatal care clinics. PW will be enrolled regardless of symptoms and followed over the course of pregnancy, approximately every 4 weeks. PW will be revisited at delivery (or after miscarriage/abortion) to assess birth outcomes, including microcephaly and other congenital abnormalities according to the evolving definition of congenital Zika syndrome (CZS). After birth, children will be followed for 2 years in the CH cohort. Follow-up visits are scheduled at ages 1-3, 4-6, 12, and 24 months to assess neurocognitive and developmental milestones. In addition, a NH cohort for the characterization of symptomatic rash/fever illness was designed, including follow-up to capture persisting health problems. Blood, urine, and other biological materials will be collected, and tested for ZIKV and other relevant arboviral diseases (dengue, chikungunya, yellow fever) using RT-PCR or serological methods. A virtual, decentralized biobank will be created. Reciprocal clinical monitoring has been established between partner sites. Substudies of ZIKV seroprevalence, transmissio

Evolving trends in the management of acute appendicitis during COVID-19 waves. The ACIE appy II study

Background: In 2020, ACIE Appy study showed that COVID-19 pandemic heavily affected the management of patients with acute appendicitis (AA) worldwide, with an increased rate of non-operative management (NOM) strategies and a trend toward open surgery due to concern of virus transmission by laparoscopy and controversial recommendations on this issue. The aim of this study was to survey again the same group of surgeons to assess if any difference in management attitudes of AA had occurred in the later stages of the outbreak. Methods: From August 15 to September 30, 2021, an online questionnaire was sent to all 709 participants of the ACIE Appy study. The questionnaire included questions on personal protective equipment (PPE), local policies and screening for SARS-CoV-2 infection, NOM, surgical approach and disease presentations in 2021. The results were compared with the results from the previous study. Results: A total of 476 answers were collected (response rate 67.1%). Screening policies were significatively improved with most patients screened regardless of symptoms (89.5% vs. 37.4%) with PCR and antigenic test as the preferred test (74.1% vs. 26.3%). More patients tested positive before surgery and commercial systems were the preferred ones to filter smoke plumes during laparoscopy. Laparoscopic appendicectomy was the first option in the treatment of AA, with a declined use of NOM. Conclusion: Management of AA has improved in the last waves of pandemic. Increased evidence regarding SARS-COV-2 infection along with a timely healthcare systems response has been translated into tailored attitudes and a better care for patients with AA worldwide

La Dorada, Caldas : un lugar mágico lleno de paz y emociones mil ¡Que viva mi terruño que tanto amo! : recopilación de cuentos folclóricos

En el libro recupera cuentos folclóricos, versos, canciones, juegos y mitos producto de la tradición oral difundida en La Dorada Caldas y le da reconocimiento a los narradores de la cultura oral del poblado.In the book, he recovers folk tales, verses, songs, games and myths that are the product of the oral tradition spread in La Dorada Caldas and gives recognition to the narrators of the oral culture of the town.El fantasma -- Anécdota de la patasola -- Historia del mohán -- El pollito pio -- Nos ayudamos -- La emboscada -- Toño un amigo con diversidad -- El horripilante olvido en medio de un temblor -- Valoremos -- Mito de un arriero -- El juego de la candela -- Canción el capitán de un buque -- Versos -- Multiplicadores de la cultura oral.na66 página

Resultados Semilleros de Investigación 2009-2010

La publicación recoge los doce informes finales de investigación presentados por los estudiantes de ocho Semilleros 1 y cuatro Semilleros 2, correspondientes a la convocatoria 2009–2010 y se constituye en el Número 25 de la Serie de Investigaciones en Construcción, si bien este es el primer Número publicado en formato digital que UNIJUS se permite poner a disposición no sólo de la comunidad universitaria, sino también de la sociedad colombiana e internacional, interesada en los temas estudiados por los jóvenes investigadores de la Facultad de Derecho, Ciencias Políticas y Sociales de la Universidad Nacional de Colombia

Concordancia de las técnicas subjetivas que miden la amplitud de acomodación

The purpose was determinate reliability test retest and concordance between clinical techniques that measure amplitude of accommodation. Methods: seventy nine students who had normal visual function, refractive and accommodative skills participated. The techniques were: minus lens (near), minus lens (far) and push down modified (-4.00D lens). Results: Intraclass Correlation Coefficient (ICC) show that test retest was high three techniques (>0,7); Concordance correlation coefficient of Lin (ρc) showed that agreement was poor for all of them (ρc≤0,9). Limits of agreement (95%) were push down modified +/-1,22; minus lens near +/-2,02; minus lens far +/- 3,44. Conclusion: reliability test retest was higher for push down modified and concordance between the techniques was poor so, these are not interchangeable.Objetivo: determinar la repetitividad inter observador y la concordancia entre las pruebas clínicas que miden la amplitud de acomodación (AA). Metodología: fueron evaluados setenta y nueve sujetos entre los 18 a 30 años, que presentaban un estado visual refractivo y acomodativo normales. Las pruebas clínicas realizadas fueron la técnica de Sheard (lente negativo de cerca) Jackson (lente negativo de lejos) y Donders modificada (alejamiento más un lente de -4.00D). Resultados: el Coeficiente de Correlación Intraclase (ICC) mostró que las pruebas de mostraban una alta repetitividad (>0,7); el Coeficiente de Correlación y Concordancia de Lin (ρc) reveló una pobre repetitividad y concordancia entre las pruebas (ρc≤0,9). Los límites de acuerdo para Donders, Sheard y Jackson (+/-1,22; +/-2,02, +/-3,44) revelan una menor variación de la AA entre los observadores para Donders y mayor para Jackson. Conclusión: la repetitividad inter observadora es mayor para la técnica de Donders modificada y la concordancia entre las pruebas es pobre, por lo que no son intercambiables

Concordancia de las técnicas subjetivas que miden la amplitud de acomodación

Objetivo: determinar la repetitividad inter observador y la concordancia entre las pruebas clínicas que miden la amplitud de acomodación (AA). Metodología: fueron evaluados setenta y nueve sujetos entre los 18 a 30 años, que presentaban un estado visual refractivo y acomodativo normales. Las pruebas clínicas realizadas fueron la técnica de Sheard (lente negativo de cerca) Jackson (lente negativo de lejos) y Donders modificada (alejamiento más un lente de -4.00D). Resultados: el Coeficiente de Correlación Intraclase (ICC) mostró que las pruebas de mostraban una alta repetitividad (\u3e0,7); el Coeficiente de Correlación y Concordancia de Lin (ρc) reveló una pobre repetitividad y concordancia entre las pruebas (ρc≤0,9). Los límites de acuerdo para Donders, Sheard y Jackson (+/-1,22; +/-2,02, +/-3,44) revelan una menor variación de la AA entre los observadores para Donders y mayor para Jackson. Conclusión: la repetitividad inter observadora es mayor para la técnica de Donders modificada y la concordancia entre las pruebas es pobre, por lo que no son intercambiables