Critical Comparison between Modified Monier-Williams and Electrochemical Methods to Determine Sulfite in Aqueous Solutions

In the present work, known concentration of sulfite aqueous solutions in the presence and absence of gallic acid was measured to corroborate the validity of modified Monier-Williams method. Free and bound-sulfite was estimated by differential pulse voltammetry. To our surprise, the modified Monier-Williams method (also known as aspiration method) showed to be very inaccurate for free-sulfite, although suitable for bound-sulfite determination. The differential pulse approach, using the standard addition method and a correction coefficient, proved to be swift, cheap, and very precise and accurate

Aplicación de una Metodología de Mejora de Procesos basada en el Enfoque de Gestión por Procesos, en los Modelos de Excelencia y el QFD en una empresa del sector de confecciones de Barranquilla (Colombia)

Este artículo presenta la aplicación en una empresa del sector de confecciones de la ciudad de Barranquilla de una metodología de mejoramiento continuo, diseñada en el marco del Grupo de Investigación de Productividad y Competitividad de la División de Ingenierías de la Universidad del Norte, la cual se diseñó bajo el Enfoque de Gestión por Procesos, los tres modelos de excelencia más conocidos (Modelo EFQM, Premio Malcolm Baldridge y el Premio Deming) y el Despliegue de la Función de Calidad, QFD. Con esta metodología se pretende ofrecer a los directores de las pequeñas y medianas empresas de cualquier sector, una herramienta de mejoramiento continuo sencilla, completa y de fácil implementación que les permita obtener resultados positivos en todas las áreas./This article shows the application in a company of the textile sector in the city of Barranquilla, of a Continuous Improvement Methodology, designed under the mark of the Engineering Division Investigation Group of Productivity and Competitiveness at Universidad del Norte, based on the Management Processes, the three good known Excellence Models, (the EFQM Model, the Malcolm Baldridge Award and the Deming Award), and the Quality Function Deployment, QFD. With this methodology it is tried to offer to the directors of the small ones and medium companies of any sector, a simple tool of Continuous Improvement, complete and easy to apply, that allows them to obtain positive results in all the areas

Handgrip and knee extension strength as predictors of cancer mortality: A systematic review and metaâ analysis

Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/145272/1/sms13206.pdfhttps://deepblue.lib.umich.edu/bitstream/2027.42/145272/2/sms13206_am.pd

Active commuting to and from university, obesity and metabolic syndrome among Colombian university students

Background: There is limited evidence concerning how active commuting (AC) is associated with health benefits in young. The aim of the study was to analyze the relationship between AC to and from campus (walking) and obesity and metabolic syndrome (MetS) in a sample of Colombian university students. Methods: A total of 784 university students (78.6% women, mean age = 20.1 ± 2.6 years old) participated in the study. The exposure variable was categorized into AC (active walker to campus) and non-AC (non/infrequent active walker to campus: car, motorcycle, or bus) to and from the university on a typical day. MetS was defined in accordance with the updated harmonized criteria of the International Diabetes Federation criteria. Results: The overall prevalence of MetS was 8.7%, and it was higher in non-AC than AC to campus. The percentage of AC was 65.3%. The commuting distances in this AC from/to university were 83.1%, 13.4% and 3.5% for < 2 km, 2- 5 km and > 5 km, respectively. Multiple logistic regressions for predicting unhealthy profile showed that male walking commuters had a lower probability of having obesity [OR = 0.45 (CI 95% 0.25–0.93)], high blood pressure [OR = 0.26 (CI 95% 0.13–0.55)] and low HDL cholesterol [OR = 0.29 (CI 95% 0.14–0.59)] than did passive commuters. Conclusions: Our results suggest that in young adulthood, a key life-stage for the development of obesity and MetS, AC could be associated with and increasing of daily physical activity levels, thereby promoting better cardiometabolic health.This study was part of the project entitled “Body Adiposity Index and Biomarkers of Endothelial and Cardiovascular Health in Adults”, which was funded by Centre for Studies on Measurement of Physical Activity, School of Medicine and Health Sciences, Universidad del Rosario (Code N° FIUR DNBG001) and Universidad de Boyacá (Code N° RECT 60)

Association of intrinsic capacity with incidence and mortality of cardiovascular disease: prospective study in UK Biobank

Background: The World Health Organization proposed the concept of intrinsic capacity (IC; the composite of all the physical and mental capacities of the individual) as central for healthy ageing. However, little research has investigated the interaction and joint associations of IC with cardiovascular disease (CVD) incidence and CVD mortality in middle- and older-aged adults. Methods: Using data from 443 130 UK Biobank participants, we analysed seven biomarkers capturing the level of functioning of five domains of IC to calculate a total IC score (ranging from 0 [better IC] to +4 points [poor IC]). Associations between IC score and incidence of six long-term CVD conditions (hypertension, stroke/transient ischaemic attack stroke, peripheral vascular disease, atrial fibrillation/flutter, coronary artery disease and heart failure), and grouped mortality from these conditions were estimated using Cox proportional models, with a 1-year landmark analysis to triangulate the findings. Results: Over 10.6 years of follow-up, CVD morbidity grouped (n = 384 380 participants for the final analytic sample) was associated with IC scores (0 to +4): mean hazard ratio (HR) [95% confidence interval, CI] 1.11 [1.08–1.14], 1.20 [1.16–1.24], 1.29 [1.23–1.36] and 1.56 [1.45–1.59] in men (C-index = 0.68), and 1.17 [1.13–1.20], 1.30 [1.26–1.36], 1.52 [1.45–1.59] and 1.78 [1.67–1.89] in women (C-index = 0.70). In regard to mortality, our results indicated that the higher IC score (+4 points) was associated with a significant increase in subsequent CVD mortality (mean HR [95% CI]: 2.10 [1.81–2.43] in men [C-index = 0.75] and 2.29 [1.85–2.84] in women [C-index = 0.78]). Results of all sensitivity analyses by full sample, sex and age categories were largely consistent independent of major confounding factors (P < 0.001). Conclusions: IC deficit score is a powerful predictor of functional trajectories and vulnerabilities of the individual in relation to CVD incidence and premature death. Monitoring an individual's IC score may provide an early-warning system to initiate preventive efforts.This study was funded by Universidad Pública de Navarra

Seroprevalencia de Mycobacterium avium Subsp. paratuberculosis (MAP) en una granja de ganado de carne de bosque húmedo tropical en Caucasia, Antioquia, Colombia

The present study determines the seroprevalence of MAP in beef cattle of a farm in tropical moist forest located in the municipality of Caucasia. Blood samples from all animals over two years of age (n=151) were obtained together with information on the epidemiological characteristics of the animal (age, breed, sex, parity, reproductive state, days postpartum). Serum samples were analyzed with an Enzyme-Linked Immunosorbent Assay (ELISA) and the information analyzed using descriptive and analytic statistics (two-way frequency tables). ELISA results showed a seroprevalence of 33.8% (IC 95% 26.1-41.4) showed statistically significant association between ELISA results and breed. According to the results, high seroprevalence of paratuberculosis level was determined in a beef farm for the first time in Colombia. Further studies on beef cattle herds should be carried out to increase the knowledge of the prevalence of this disease in the country.El presente estudio se realizó para determinar la seroprevalencia a MAP en ganado de carne de una granja en bosque húmedo tropical ubicada en el municipio de Caucasia. Se tomaron muestras de sangre de todos los bovinos mayores de dos años (n=151) y se obtuvo información de características individuales (edad, raza, sexo, número de partos, estado reproductivo y días posparto). Las muestras de suero fueron analizadas mediante el Ensayo por inmunoabsorción ligado a enzimas (ELISA), mientras que la información fue analizada usando estadística descriptiva y analítica (Prueba de chi cuadrado y prueba exacta de Fisher). Los resultados de ELISA mostraron una seroprevalencia del 33.8% (IC 95% 26.1-41.4) y el análisis estadístico mostró asociación estadísticamente significativa entre el resultado de ELISA y la raza. De acuerdo a los resultados, un alto nivel de seroprevalencia fue determinado en ganado de carne por primera vez en Colombia. Futuros estudios en este tipo de ganado deben ser realizados para aumentar el conocimiento de la prevalencia de la enfermedad en el país

Diagnóstico de las condiciones sanitarias del corregimiento El Cedro, en Ayapel, Córdoba

RESUMEN: En el año 2009 se realizó un diagnostico del estado sanitario del corregimiento El Cedro, municipio de Ayapel. Se encontraron Problemas en la calidad del agua que se consume y en la disposición de los residuos líquidos y sólidos que producen la comunidad. En este estudio se presentan alternativas de solución a dichos problemas, entre ellas el diseño de un alcantarillado tipo RAS (red de alcantarillado simplificado) cuyos cálculos (CEPIS, 1987) se hicieron a partir de un ortofotomapa y un modelo digital del terreno provenientes de fotografías aéreas digitales tomadas en 2007. Se realizó ademas, un plano de la red actual de acuerdo con la dicha base cartográfica, se simuló hidráulicamente su funcionamiento con el programa EPANET, se diseñaron dos lagunas de oxidación facultativas y se prepuso un sistema de manejo ambientalmente más amigable, de los residuos sólidos.ABSTRACT: In 2009, a diagnosis was made of the health status of the village of El Cedro, municipality of Ayapel. Problems were found in the quality of the water consumed and in the disposal of the liquid and solid waste produced by the community. In this study alternative solutions to these problems are presented, among them the design of a sewage system type RAS (simplified sewerage network) whose calculations (CEPIS, 1987) were made from an orthophotomap and a digital model of the terrain from photographs digital aerial surveys taken in 2007. A map of the current network was also made in accordance with the aforementioned cartographic database, its operation was simulated hydraulically with the EPANET program, two facultative oxidation lagoons were designed and a more environmentally friendly management system was planned. friendly, of solid waste