Diseño de un modelo de plan de mantenimiento centrado en lubricación para la empresa Wordltex - Caribe Ltda

Con el diseño del programa de mantenimiento centrado en lubricación se emplean elementos necesarios para administrar el mantenimiento de los equipos de las instalaciones de la empresa WORLDTEX – CARIBE LTDA, esto nos permitirá mantener la operabilidad y la eficiencia de los mismos, menor cantidad de repuestos, menores costos de compra en lubricantes y aumento de la vida útil de los equipos. El mantenimiento centrado en lubricación le permitirá a la empresa realizar un proceso de lubricación correcto, donde se tendrán en cuenta las frecuencias de intervalo de cambio, evitando o previniendo las fallas antes que sucedan. Los altos costos de mantenimiento en una empresa pueden generarse debido al mal uso de los lubricantes, al no tener un plan de lubricación correcta y de no contar con la capacitación suficiente para su desarrollo. Por lo cual en la empresa WORLDTEX – CARIBE LTDA se busca darle prioridad al programa de mantenimiento centrado en lubricación para garantizar la operación óptima de los equipos y aumentar los niveles de funcionalidad de los mismos. Gracias al uso de los lubricantes se puede reducir la cantidad de fricción que se presenta en las piezas de un equipo y por ende se disminuye el desgaste ahorrando así tiempo y energía en el proceso.Incluye bibliografía, anexo

Impact of the Glancing Angle Deposition on the Yttria-Stabilized Zirconia Growth and Their Thermal Barrier Coating Properties

Yttria-stabilized zirconia (YSZ) is the most common material used as a thermal barrier in several engineering applications. The majority of films produced by physical vapor deposition (PVD) techniques use normal incidence and lead to the columnar growth normal to the substrate. The typical columnar structure of sputter-deposited films is largely influenced, among other parameters, by pressure, temperature, thickness, and the ion-to-atom ratio incident at the substrate or substrate bias voltage. Another important experimental parameter used to modify the film properties is the direction of the incident flux of the depositing species with respect to the substrate surface. In this chapter an oblique angle deposition (OAD) approach was used to grow YSZ with tilted columnar structures, to study the impact of this deposition technique on the microstructure, morphology, and, correspondingly, the thermal conductivity of YSZ films, in order to improve the insulator potential of these thin films. Additionally, in the chapter, we present a detailed description of the oblique angle deposition (OAD) technique and double-layer model used for determination of the effective thermal conductivity of YSZ samples grown over thick substrates

Outcomes of meso-Rex bypass for prehepatic portal hypertension in pediatric patients

Portal hypertension in pediatric patients is often associated with prehepatic portal hypertension (PHPH), frequently linked to thrombosis and cavernomatous degeneration of the portal vein (CDVP). This study evaluates the efficacy of the MesoRexBypass (MRB) in managing PHPH and associated thrombosis. Methods: A retrospective prognostic cohort design was employed to analyze the clinical outcomes of nine pediatric patients who underwent MRB between 2020 and 2022. Clinical and surgical variables were examined, including graft type, surgical time, and complications. Postoperative follow-up confirmed MRB functionality. Results: The MRB proved highly successful, with improved clinical parameters observed in all patients. Significant reductions in gastrointestinal bleeding, esophageal varices, and hypertensive gastropathy were observed postoperatively. Thrombocytopenia and liver enzyme levels showed substantial improvement, indicating enhanced liver function and amelioration of hypersplenism. The MRB's adaptability was demonstrated using autologous grafts and various graft sources.One patient experienced shunt thrombosis, another experienced minor gastrointestinal bleeding, and another died. The MRB exhibited a high success rate and few complications. Conclusion: The MRB is an effective and versatile surgical technique for managing PHPH in pediatric patients. This study emphasizes its promising outcomes and suggests its potential for enhancing treatment approaches and quality of life in this patient population. Further research with larger cohorts is needed to strengthen the evidence presented. The MRB holds promise as a valuable addition to the management of PHPH in children. Level of Evidence IV

Debate on the state of the nation What is coming for Colombia in 2021?

Los colombianos hemos vivido en 2020 una de las experiencias más difíciles de nuestras vidas por cuenta de la pandemia del Covid19. Este año terminará con una contracción de la economía aproximada al 8%, más de 5 millones de empleos perdidos, la pobreza ampliando sus linderos en los hogares y una conflictividad social de alta tensión. Pero los colombianos queremos tener una mejor aproximación sobre lo que vendrá en 2021. Tenemos la esperanza de un 2021 con más oportunidades y corresponde al gobierno, a las autoridades, a los líderes, a los empresarios, generar confianza sobre lo que viene. Con este propósito la Universidad del Rosario, EL TIEMPO Casa Editorial y la Fundación Konrad Adenauer, realizaron e pasado jueves 3 de diciembre de 2020 una jornada de reflexión sobre el Estado de la Nación y lo que vendrá para los colombianos en 2021. A continuación, puede ver el evento completo, que se divide en: - Ponencia: Jóvenes y academia en 2021 (Minuto 0:27:40) / Cheyne-García, Alejandro (Rector de la Universidad del Rosario). - Panel: Una mirada de la sociedad (Minuto 0:45:55) / Tania Rosas (Emprendedora Social), Ana Karina García (Presidenta Fundación Juntos se Puede), Laura Serna (Estudiante Jurisprudencia de la Universidad del Rosario); Calos Andrés Charry (Director de la Maestría en estudios sociales de la universidad del Rosario). - Entrevista: Gobierno (Minuto 1:31:40) / Ivan Duque Márquez (Presidente de la Republica de Colombia), Roberto Pombo (Director de la casa editorial el Tiempo) - Cifras Colombia 2020-2021 (Minuto 2:22:40) / Cesar caballero (gerente general de cifras y conceptos). - Conversatorio: La responsabilidad del sector privado (2:44:28) / Adriana Guillen (Presidenta ASOCAJAS), Nayib Neme (Presidente Grupo a), Mario Hernández (Empresario), Ignacio Gaitán (Presidente INNpulsa), Alejando Cheyne Garcia (rector de la Universidad del Rosario). - Panel: Desarrollo regional (Minuto 3:35:42) / Elsa Noguera (Gobernadora del Atlántico), Aníbal Gaviria (gobernador de Antioquia), Felipe Harman (Alcalde de Villavicencio), Jairo Yañez (Alcalde de Cucuta), Edulfo peña (Director del centro nacional de dialogo de la Universidad del Rosario). - Panel: El gobierno - Ministro (4:29:47): Alicia Arango Olmos (Ministra del interior), María Victoria Angulo (Ministra de educación); Angela María Orozco (Ministra de transporte); Wilson Ruiz Orejuela (Ministro de Justicia); Saul Pineda (Viceministro de desarrollo empresarial); Andres Mompotes (Subdirector El Tiempo)Colombians have lived in 2020 one of the most difficult experiences of our lives due to the Covid19 pandemic. This year will end with a contraction of the economy of approximately 8%, more than 5 million jobs lost, poverty widening its boundaries in homes and a high tension social conflict. But Colombians want to have a better approximation of what will come in 2021. We hope for a 2021 with more opportunities and it is up to the government, the authorities, the leaders, the businessmen, to generate confidence about what is coming. For this purpose, the Universidad del Rosario, EL TIEMPO Casa Editorial and the Konrad Adenauer Foundation, held on Thursday, December 3, 2020, a day of reflection on the State of the Nation and what will come for Colombians in 2021. Next, You can see the complete event, which is divided into: - Lecture: Youth and academy in 2021 (Minute 0:27:40) / Cheyne-García, Alejandro (Rector of the Universidad del Rosario). - Panel: A view of society (Minute 0:45:55) / Tania Rosas (Social Entrepreneur), Ana Karina García (President of the Together We Can Foundation), Laura Serna (Law Student of the Universidad del Rosario); Calos Andrés Charry (Director of the Master in Social Studies at the Universidad del Rosario). - Interview: Government (Minute 1:31:40) / Ivan Duque Márquez (President of the Republic of Colombia), Roberto Pombo (Director of the publishing house El Tiempo) - Figures Colombia 2020-2021 (Minute 2:22:40) / Cesar caballero (general manager of figures and concepts). - Discussion: The responsibility of the private sector (2:44:28) / Adriana Guillen (President ASOCAJAS), Nayib Neme (President Group a), Mario Hernández (Businessman), Ignacio Gaitán (President INNpulsa), Alejando Cheyne Garcia (rector of the University of Rosario). - Panel: Regional Development (Minute 3:35:42) / Elsa Noguera (Governor of the Atlantic), Aníbal Gaviria (Governor of Antioquia), Felipe Harman (Mayor of Villavicencio), Jairo Yañez (Mayor of Cucuta), Edulfo Peña (Director from the National Dialogue Center of the Universidad del Rosario). - Panel: The government - Minister (4:29:47): Alicia Arango Olmos (Minister of the Interior), María Victoria Angulo (Minister of Education); Angela María Orozco (Minister of Transport); Wilson Ruiz Orejuela (Minister of Justice); Saul Pineda (Vice Minister of Business Development); Andres Mompotes (Deputy Director El Tiempo

The impact of COVID-19 on the well-being and cognition of older adults living in the United States and Latin America.

In the COVID-19 pandemic, older adults from vulnerable ethnoracial groups are at high risk of infection, hospitalization, and death. We aimed to explore the pandemic's impact on the well-being and cognition of older adults living in the United States (US), Argentina, Chile, Mexico, and Peru. 1,608 (646 White, 852 Latino, 77 Black, 33 Asian; 72% female) individuals from the US and four Latin American countries aged ≥ 55 years completed an online survey regarding well-being and cognition during the pandemic between May and September 2020. Outcome variables (pandemic impact, discrimination, loneliness, purpose of life, subjective cognitive concerns) were compared across four US ethnoracial groups and older adults living in Argentina, Chile, Mexico, and Peru. Mean age for all participants was 66.7 ( = 7.7) years and mean education was 15.4 ( = 2.7) years. Compared to Whites, Latinos living in the US reported greater economic impact ( < .001,  = .031); while Blacks reported experiencing discrimination more often ( < .001,  = .050). Blacks and Latinos reported more positive coping ( < .001,  = 040). Compared to Latinos living in the US, Latinos in Chile, Mexico, and Peru reported greater pandemic impact, Latinos in Mexico and Peru reported more positive coping, Latinos in Argentina, Mexico, and Peru had greater economic impact, and Latinos in Argentina, Chile, and Peru reported less discrimination. The COVID-19 pandemic has differentially impacted the well-being of older ethnically diverse individuals in the US and Latin America. Future studies should examine how mediators like income and coping skills modify the pandemic's impact. Massachusetts General Hospital Department of Psychiatry