Sistema embebido de bajo costo para visión artificial

Se desarrolló un sistema embebido[1]para visión artificial utilizando diferentes sistemas de desarrollo presentes en la industria electrónica, ensamblados y puestos a punto para obtener un sistema hardware-software de bajo costo para realizar diferentes aplicaciones con visión artificial. Como resultado, el sistema consta de dos microprocesadores, LPC2106 de 60 MHz y el ATMEGA 2560 de 16 MHz, un menú de navegación y una pantalla de visualización. El sistema tiene la capacidad de analizar 7,14 imágenes por segundo, almacenar 2,6 imágenes por segundo y visualizar una imagen cada 3,4s.[1] Un sistema embebido o dedicado es un sistema de computación diseñado para realizar una o algunas funciones dedicadasfrecuentemente en un sistema de computación en tiempo real

Sistema embebido de bajo costo para visión artificial

Se desarrolló un sistema embebido[1]para visión artificial utilizando diferentes sistemas de desarrollo presentes en la industria electrónica, ensamblados y puestos a punto para obtener un sistema hardware-software de bajo costo para realizar diferentes aplicaciones con visión artificial. Como resultado, el sistema consta de dos microprocesadores, LPC2106 de 60 MHz y el ATMEGA 2560 de 16 MHz, un menú de navegación y una pantalla de visualización. El sistema tiene la capacidad de analizar 7,14 imágenes por segundo, almacenar 2,6 imágenes por segundo y visualizar una imagen cada 3,4s.[1] Un sistema embebido o dedicado es un sistema de computación diseñado para realizar una o algunas funciones dedicadasfrecuentemente en un sistema de computación en tiempo real

Sistema embebido de bajo costo para visión artificial

Se desarrolló un sistema embebido[1]para visión artificial utilizando diferentes sistemas de desarrollo presentes en la industria electrónica, ensamblados y puestos a punto para obtener un sistema hardware-software de bajo costo para realizar diferentes aplicaciones con visión artificial. Como resultado, el sistema consta de dos microprocesadores, LPC2106 de 60 MHz y el ATMEGA 2560 de 16 MHz, un menú de navegación y una pantalla de visualización. El sistema tiene la capacidad de analizar 7,14 imágenes por segundo, almacenar 2,6 imágenes por segundo y visualizar una imagen cada 3,4s.[1] Un sistema embebido o dedicado es un sistema de computación diseñado para realizar una o algunas funciones dedicadasfrecuentemente en un sistema de computación en tiempo real

Razones para vivir en personas que se encuentran en situación de desplazamiento forzado

This work aims to identify the reasons for living in displaced persons through a descriptive quantitative research. It uses a cross-sectional design with a sample of 100 persons which ages were between 18 and 81 years. They all were in forced displacement conditions. To collect the information it was used Cuestionario de razones para vivir (reasons for living inventory). Results show that coping skills (55%), responsibility with family (16%), and the fear to suicide (10%) protect people from suicide acts; even in high stress situations. © Revista Colombiana de Ciencias Sociales.Este trabajo tiene como objetivo identificar las razones por las cuales algunas personas desplazadas prefieren vivir y afirman su existencia. Para ello se hizo un estudio cuantitativo descriptivo, con un diseño descriptivo transversal con una muestra de tipo intencionado de 100 personas entre los 18 y los 81 años en condición de desplazamiento forzado. Para recolectar la información se utilizó el Inventario de razones para vivir (I.R.V.). Los resultados indican que las habilidades de afrontamiento (55%), la responsabilidad con la familia (16%) y el miedo al suicidio (10%) protegen las personas de cometer actos suicidas, incluso en condiciones de estrés elevado. © Revista Colombiana de Ciencias Sociales

Aplicación de una Metodología Estructurada para el Diseño de un Sistema de Cosecha Selectiva de Café

A design methodology was used to obtain devices for selective detachment of coffee fruits. The technical specifications of the desire product were taken into account, as well as the conditions offered by the coffee fruits in the branches. There were generated 33 viable options of which the three best qualified were selected for being explored. Then it was chosen the most viable option to be designed in detail. The final device was evaluated in lab conditions and the detached mass showed a mature fruits content of 60% and an immature fruits content of 20%.Se usó una metodología para el diseño de dispositivos que permitan el desprendimiento selectivo de frutos de café. Se tuvieron en cuenta especificaciones técnicas del producto deseado y las condiciones generadas por los frutos de café en ramas. Se generaron 33 opciones viables técnicamente de las cuales fueron seleccionadas las mejores tres calificadas para ser exploradas y finalmente seleccionar solo una para ser diseñada de manera detallada. Dicha opción fue evaluada en condiciones de laboratorio y mostró un porcentaje de desprendimiento de frutos maduros del 60% y de frutos verdes del 20%

Electronic coffee grains separator

Accurate coffee sorting is a response to pressures for product quality and to a growing market for specialty coffees. One of the major challenges in this regard is to prepare the raw coffee fruits for sorting in one-by-one electronic machines. In this paper, we present a mechanical device developed to separate clusters and impurities from the main process. The mechanical device consists of two inclined belt conveyors with upward motion, working in series. This arrangement conveys upwards any elements with more than three contact points on the belt’s flat surface, while quasi-spherical elements (fruits) roll down on the belts. The experimental set up was designed to allow each belt’s inclination and speed to vary, in order to run a 3 x 3 factorial treatment design (Three inclinations: 10º, 14º and 18º and three speeds: 0.17, 0.20 and 0.24 m s-1). The belt transport surface material was PVC. The best performance was obtained at the speed of 0.20 m s-1 and between 10º and 14º of inclination. After these findings, three treatments were conducted at a working speed of 0.20 m s-1 and three inclinations between 10º and 14º, finding the best performance at 11º. In these conditions the mean efficacy of separation was 98.8%, varying within a range between 97.5% and 100%. The resulting system from this research work is suitable to run as pretreatment of one-by-one electronic sorters of coffee and coffee-like products

Passiflora ligularis Juss. (granadilla): estudios químicos y farmacológicos de una planta con potencial terapéutico

ilustracionesEl presente libro es fruto de la investigación interdis- ciplinaria entorno a las hojas de Passiflora ligularis (granadilla) con fines medicinales, entre los grupos de investigación Principios Bioactivos de Plantas Medicinales del Departamento de Farmacia de la Universidad Nacional de Colombia, Estudio y Aprovechamiento de Productos Naturales Marinos y Frutas de Colombia del Departamento de Química de la Universidad Nacional de Colombia y el Grupo de Investigación en Fitoquímica de la Pontificia Universidad Javeriana, con apoyo del Ministerio de Ciencia, Tecnología e Innovación de Colombia. A lo largo de estas páginas, se resumen algunos de los resultados y avances más destacados de estos grupos de investigación en cuanto a la caracterización química de las hojas de esta especie dando énfasis a los flavonoides y saponinas, al estudio in silico, in vitro e in vivo de su actividad farmacológica, principalmente como hipoglicemiante y antinflamatorio, al desarrollo de metodologías analíticas precisas, exactas y reproducibles que permitan la completa caracterización del extracto optimizado obtenido como un ingrediente activo promisorio para el desarrollo de productos fitoterapéuticos, etapa actualmente en progreso. Se pretende que esta publicación permita la divulgación técnica y científica de los resultados de varios años de estudio con el fin de dar valor agregado a los cultivos de Passiflora ligularis, una planta de gran interés comercial debido a sus frutos y cuyas hojas en la actualidad son simplemente un subproducto de su cosecha, desconociendo el potencial terapéutico de las mismas y la posibilidad de convertirse en un materia prima para la obtención de productos fitoterapéuticos estables, seguros y eficaces. (texto tomado de la fuente)Presentación -- Capítulo 1. Estudio in silico y evaluación in vitro de la actividad inhibitoria de flavonoides y saponinas identificados en hojas de Passiflora ligularis Juss. sobre las enzimas α-amilasa y α-glucosidasa -- Capítulo 2. Evaluación de la actividad antiinflamatoria del extracto acuoso, la fracción butanólica y compuestos identificados en las hojas de Passiflora ligularis Juss. -- Capítulo 3. Efecto del extracto acuoso de hojas de Passiflora ligularis Juss. y de sus metabolitos mayoritarios sobre la homeostasis de glucosa -- Capítulo 4. Metodologías analíticas para el estudio y cuantificación de flavonoides en extractos de hojas de Passiflora ligularis Juss. -- Capítulo 5. Estandarización del extracto de hojas de Passiflora ligularis Juss. (granadilla)Primera edició

Antimicrobial resistance among migrants in Europe: a systematic review and meta-analysis

BACKGROUND: Rates of antimicrobial resistance (AMR) are rising globally and there is concern that increased migration is contributing to the burden of antibiotic resistance in Europe. However, the effect of migration on the burden of AMR in Europe has not yet been comprehensively examined. Therefore, we did a systematic review and meta-analysis to identify and synthesise data for AMR carriage or infection in migrants to Europe to examine differences in patterns of AMR across migrant groups and in different settings. METHODS: For this systematic review and meta-analysis, we searched MEDLINE, Embase, PubMed, and Scopus with no language restrictions from Jan 1, 2000, to Jan 18, 2017, for primary data from observational studies reporting antibacterial resistance in common bacterial pathogens among migrants to 21 European Union-15 and European Economic Area countries. To be eligible for inclusion, studies had to report data on carriage or infection with laboratory-confirmed antibiotic-resistant organisms in migrant populations. We extracted data from eligible studies and assessed quality using piloted, standardised forms. We did not examine drug resistance in tuberculosis and excluded articles solely reporting on this parameter. We also excluded articles in which migrant status was determined by ethnicity, country of birth of participants' parents, or was not defined, and articles in which data were not disaggregated by migrant status. Outcomes were carriage of or infection with antibiotic-resistant organisms. We used random-effects models to calculate the pooled prevalence of each outcome. The study protocol is registered with PROSPERO, number CRD42016043681. FINDINGS: We identified 2274 articles, of which 23 observational studies reporting on antibiotic resistance in 2319 migrants were included. The pooled prevalence of any AMR carriage or AMR infection in migrants was 25·4% (95% CI 19·1-31·8; I2 =98%), including meticillin-resistant Staphylococcus aureus (7·8%, 4·8-10·7; I2 =92%) and antibiotic-resistant Gram-negative bacteria (27·2%, 17·6-36·8; I2 =94%). The pooled prevalence of any AMR carriage or infection was higher in refugees and asylum seekers (33·0%, 18·3-47·6; I2 =98%) than in other migrant groups (6·6%, 1·8-11·3; I2 =92%). The pooled prevalence of antibiotic-resistant organisms was slightly higher in high-migrant community settings (33·1%, 11·1-55·1; I2 =96%) than in migrants in hospitals (24·3%, 16·1-32·6; I2 =98%). We did not find evidence of high rates of transmission of AMR from migrant to host populations. INTERPRETATION: Migrants are exposed to conditions favouring the emergence of drug resistance during transit and in host countries in Europe. Increased antibiotic resistance among refugees and asylum seekers and in high-migrant community settings (such as refugee camps and detention facilities) highlights the need for improved living conditions, access to health care, and initiatives to facilitate detection of and appropriate high-quality treatment for antibiotic-resistant infections during transit and in host countries. Protocols for the prevention and control of infection and for antibiotic surveillance need to be integrated in all aspects of health care, which should be accessible for all migrant groups, and should target determinants of AMR before, during, and after migration. FUNDING: UK National Institute for Health Research Imperial Biomedical Research Centre, Imperial College Healthcare Charity, the Wellcome Trust, and UK National Institute for Health Research Health Protection Research Unit in Healthcare-associated Infections and Antimictobial Resistance at Imperial College London

REQUITE: A prospective multicentre cohort study of patients undergoing radiotherapy for breast, lung or prostate cancer

Purpose: REQUITE aimed to establish a resource for multi-national validation of models and biomarkers that predict risk of late toxicity following radiotherapy. The purpose of this article is to provide summary descriptive data. Methods: An international, prospective cohort study recruited cancer patients in 26 hospitals in eight countries between April 2014 and March 2017. Target recruitment was 5300 patients. Eligible patients had breast, prostate or lung cancer and planned potentially curable radiotherapy. Radiotherapy was prescribed according to local regimens, but centres used standardised data collection forms. Pre-treatment blood samples were collected. Patients were followed for a minimum of 12 (lung) or 24 (breast/prostate) months and summary descriptive statistics were generated. Results: The study recruited 2069 breast (99% of target), 1808 prostate (86%) and 561 lung (51%) cancer patients. The centralised, accessible database includes: physician-(47,025 forms) and patient-(54,901) reported outcomes; 11,563 breast photos; 17,107 DICOMs and 12,684 DVHs. Imputed genotype data are available for 4223 patients with European ancestry (1948 breast, 1728 prostate, 547 lung). Radiation-induced lymphocyte apoptosis (RILA) assay data are available for 1319 patients. DNA (n = 4409) and PAXgene tubes (n = 3039) are stored in the centralised biobank. Example prevalences of 2-year (1-year for lung) grade >= 2 CTCAE toxicities are 13% atrophy (breast), 3% rectal bleeding (prostate) and 27% dyspnoea (lung). Conclusion: The comprehensive centralised database and linked biobank is a valuable resource for the radiotherapy community for validating predictive models and biomarkers. Patient summary: Up to half of cancer patients undergo radiation therapy and irradiation of surrounding healthy tissue is unavoidable. Damage to healthy tissue can affect short-and long-term quality-of-life. Not all patients are equally sensitive to radiation "damage" but it is not possible at the moment to identify those who are. REQUITE was established with the aim of trying to understand more about how we could predict radiation sensitivity. The purpose of this paper is to provide an overview and summary of the data and material available. In the REQUITE study 4400 breast, prostate and lung cancer patients filled out questionnaires and donated blood. A large amount of data was collected in the same way. With all these data and samples a database and biobank were created that showed it is possible to collect this kind of information in a standardised way across countries. In the future, our database and linked biobank will be a resource for research and validation of clinical predictors and models of radiation sensitivity. REQUITE will also enable a better understanding of how many people suffer with radiotherapy toxicity