Diseño e implementación de un prototipo de dispensador automático de comida para animales basado en raspberry pi controlado mediante una aplicación móvil

El desarrollo de este trabajo atiende parte de la problemática actual que viven miles de mascotas en el país y millones en el mundo a causa del poco tiempo que pasan sus dueños en el lugar donde reside la mascota y de los problemas de salud que les acarrea la mala dosificación del alimento. Diversos estudios indican que los animales domésticos que consumen alimentos sin un control horario o raciones específicas disminuyen aproximadamente en un 15% su expectativa de vida y son más propensos a múltiples padecimientos de salud debido a la obesidad. Lo anterior soportado en el Estatuto Nacional de Protección Animal y su actual reforma, la ley 1774 de 2016, la cual demanda en el artículo 3, punto b1, en cuanto al principio de bienestar animal, que los animales no deben sufrir hambre, ni sed. Para dar solución a la problemática se propone un mecanismo de alimentación a distancia el cual permite darle a la mascota el concentrado y las cantidades a las horas más adecuadas, proporcionadas por su amo sin importar dónde este se encuentre. Con los comederos automatizados, la dificultosa tarea de alimentar adecuadamente a la mascota por distintos factores, queda supeditada al simple llenado de la tolva una vez cada dos o tres días, dependiendo la dosificación programada para cada ración de concentrado en función de la edad y la raza. También se debe recalcar que con el tiempo se ha desarrollado una estrecha conexión entre el amo y su mascota y en muchas ocasiones esta pasa a convertirse en un miembro importantes del núcleo familiar y no ser solo visto como un animal sino como un "ser sintiente" que necesitan y merecen protección

Una actualización sobre Blastocystis sp.

Blastocystis sp. (anteriormente B. hominis) es uno de los principales parásitos intestinales que afectan a humanos y animales. Se considera un complejo de varios subtipos (genotipos) y presenta morfologías múltiples (vacuolar, granular, formas multivacuolar, avacuolar, ameboide y quiste) con diferentes estrategias de replicación. Inicialmente considerado como un comensal, los actuales estudios epidemiológicos sugieren que Blastocystis es patógeno u oportunista y se asocia con una amplia gama de trastornos gastrointestinales y extraintraintestinales, pero la asociación de los diferentes subtipos y morfologías a la patología observada en pacientes, es aún desconocida. Blastocystis se considera un parásito ubicuo de distribución en todo el mundo y es el patógeno más frecuentemente aislado en las heces humanas. El uso de técnicas moleculares ha permitido nueva información sobre la distribución de los subtipos de diferentes regiones, su potencial zoonótico y las vías de transmisión

The situation of suicide in Antioquia during 2016 and 2017: Results of epidemiological surveillance data

Background: Identifying the patterns, distribution, and characteristics of suicide in a region is possible with epidemiological surveillance which may lay the foundations for suicide prevention. Objective: To describe the situation of suicide in Antioquia during the period 2016-2017. Methods: Descriptive study based on data from the Epidemiological Surveillance System for External Cause Injuries of the National Institute of Legal Medicine and Forensic Sciences. Suicides rates and Years of Life Lost (YLL) were calculated and the circumstances of the event were described. Results: There were 425 suicides in 2016 and 419 in 2017, with a suicides rate of 6.50 and 6.34 per 100,000 inhabitants/year respectively, and 16,446.8 YLL for 2016 and 16,019.94 YLL for 2017. Most of the suicides occurred in males, in young age groups, urban residents and single marital status. Regarding the characteristics of suicide, the most frequently used mechanism was mechanical asphyxia followed by poisoning, in about 40% of cases a triggering life event was established, such as partner conflicts, and were more frequent on Sunday and Monday and at night and early morning. Conclusion: The incidence of suicide in Antioquia in-creased in 2016 and 2017 compared to previous years. It was more frequent in economically productive ages, which explains the high YLL. The description of the characteristics of suicide may facilitate the discussion of preventive interventions

Frecuencia de enteroparásitos en primates Cebidae y Callitrichidae del Zoológico de Cali, Colombia: implicaciones zoonóticas

Introduction: Enteroparasites can cause problems in animals kept under human care in zoos and shelters. Wild animals have low parasitic loads but when sheltered in closed places they can be higher and lead to clinical manifestations, which increases the cost of medical treatments and care. On the other hand, some enteroparasites can represent a potential risk of zoonotic infection for their animal keepers, visitors, and other zoo animals. In addition, they could affect recovery programs for endangered species.Objectives: To establish the presence and prevalence of potentially zoonotic enteroparasites in primates of the Cebidae and Callitrichidae families at the Zoológico de Cali from September to November, 2017.Materials and methods: We conducted a prospective cross-sectional study. Serial samples from 50 individuals belonging to seven species and two primate families were analyzed by ova and parasite test, flotation, and Kinyoun stain between September and November, 2017.Results: In order of frequency, the parasite genera found in the seven primate species evaluated were Blastocystis spp., Trichomonas spp., Giardia spp., Entamoeba spp., Strongyloides spp., Cyclospora sp., and Trichuris sp. Conclusions: At least six of the parasite genera found have potential zoonotic implications. It is necessary to establish what are the infection sources at the Zoológico de Cali and implement management protocols to reduce the risk of transmission to both humans and other animals in the collection. Additionally, we offer relevant information on the zoonotic potential of each of the enteroparasites found.Introducción. Los enteroparásitos pueden generar problemas en animales bajo cuidado humano en zoológicos y centros de acogida. Los animales silvestres presentan bajas cargas parasitarias, pero estas pueden ser mayores y llevar a manifestaciones clínicas cuando se trata de animales resguardados en recintos, lo que aumenta los gastos en tratamientos y cuidados médicos. Por otro lado, algunos enteroparásitos pueden causar infecciones zoonóticas en los cuidadores, los visitantes y otros animales del zoológico, así como afectar los programas de recuperación de especies amenazadas de extinción.Objetivos. Determinar la presencia y prevalencia de enteroparásitos con potencial de transmisión zoonótica en primates de las familias Cebidae y Callitrichidae del Zoológico de Cali, entre septiembre y noviembre de 2017.Materiales y métodos. Se hizo un estudio transversal prospectivo, para lo cual se recolectaron muestras seriadas de 50 individuos pertenecientes a siete especies de dos familias de primates y se analizaron mediante examen coprológico, flotación y coloración Kinyoun, entre septiembre y noviembre de 2017.Resultados. Según su prevalencia, los géneros de parásitos hallados en las siete especies de primates evaluadas, fueron Blastocystis spp., Trichomonas spp., Giardia spp., Entamoeba spp., Strongyloides spp., Cyclospora sp. y Trichuris sp.Conclusiones. Por lo menos, seis de los géneros de parásitos identificados tienen implicaciones zoonóticas, lo cual hace necesario establecer las posibles vías de infección de los primates del Zoológico de Cali e implementar protocolos de manejo que reduzcan el riesgo de transmisión a los humanos y a otros animales de la colección. Además, se presenta la información relevante sobre el potencial zoonótico de los enteroparásitos hallados

ENTEROPARÁSITOS CON POTENCIAL ZOONÓTICO EN ANIMALES EN CAUTIVERIO DEL ZOOLÓGICO DE CALI, COLOMBIA

Zoos are places with a high diversity of animals, some of which may have acquired a particular parasite load in both their area of origin or during their captivity. The probability of animal keepers contracting zoonotic diseases increases due to constant contact with the animals in their daily work. This descriptive ecological study was performed in order to establish the presence of intestinal parasites with zoonotic potential in captive animals at the Cali Zoological garden. In february 2013, serial pools of stools from psittacids (3 species), cebids (2 species), atelids (2 species), caviids (1 species), and lemurids (1 species), were collected and analyzed using direct smear and concentration techniques. Convenience sampling taking 53 individuals including mammals and birds was performed, yielding parasitological prevalence of 89%, distributed as follows: 57.2 % for helminths (31.8% Trichurida, 6.35% Ascaridida, 6.35% Uncinarias and 12.7 % Strongyloides sp.) and 31.8% for protozoa (19.05% Entamoeba spp. and 12.70 % Giardia spp.). The presence of potential zoonotic parasites in the positive samples such as Giardia spp., Entamoeba spp. and Strongyloides spp. demands studies in larger populations of animals and species using molecular methods.Los zoológicos son lugares con una alta diversidad de animales, algunos de los cuales pueden poseer una particular carga parasitaria adquirida tanto en su zona de origen como durante su cautiverio. La probabilidad de contraer infecciones zoonóticas aumenta por el constante contacto de los cuidadores con los animales en sus labores diarias. Se realizó un estudio ecológico descriptivo con el objetivo de establecer la presencia de enteroparásitos con potencial zoonótico en los animales en cautiverio del Zoológico de Cali. Durante el mes de febrero del 2013 se recolectaron grupos seriados de heces de psitácidos (3 especies), cébidos (2 especies), atélidos (2 especies), cáviidos (1 especie) y lemúridos (1 especie), los cuales se analizaron por las técnicas de directo y concentración. Se realizó un muestreo por conveniencia tomando a 53 individuos (entre mamíferos y aves), obteniéndose una prevalencia parasitológica de 89%, distribuida así: 57,2% para helmintos (31,8% Trichurida, 6,35% Ascaridida, 6,35% Uncinarias y 12,7% Strongyloides sp.) y 31,8% para protozoos (19,05% Entamoeba spp. y 12,70% Giardia spp.). La presencia de parásitos con potencial zoonótico en las muestras positivas, tales como Giardia spp., Entamoeba spp. y Strongyloides spp., demanda estudios en una mayor población de animales y especies, utilizando métodos moleculares

Una mirada prospectiva de la industria Risaraldense camino a la industria 4.0 : plan tecnológico 2020–2030 Centro de Diseño e Innovación Tecnológico Industrial

Se presenta el plan tecnológico del Centro de Diseño e Innovación Tecnológico Industrial del SENA para la vigencia 2002 - 2030. Comprende el análisis y diagnóstico de la industria risaraldense, sus necesidades y tendencias, con enfoque a la industria 4.0. Se provee información para: identificar tecnologías y ocupaciones emergentes que permitan anticipar la definición de perfiles de instructores, determinar requerimientos de modernización de infraestructura física y tecnológica del Centro de formación, actualizar, crear o eliminar programas de formación, establecer el tipo de formación, servicios tecnológicos e innovación que el centro de formación ofrecerá en un horizonte de 10 años e identificar los proyectos y actores estratégicos para el centro de formación.The technological plan of the SENA Industrial Technological Design and Innovation Center for the period 2002-2030 is presented. It includes the analysis and diagnosis of the Risaralda industry, its needs and trends, with a focus on industry 4.0. Information is provided to: identify emerging technologies and occupations that allow anticipating the definition of instructor profiles, determine modernization requirements of the physical and technological infrastructure of the Training Center, update, create or eliminate training programs, establish the type of training, services technology and innovation that the training center will offer over a 10-year horizon and identify projects and strategic actors for the training center.Fase I: análisis y diagnóstico estratégico -- Análisis externo del centro de formación -- Análisis interno del centro de formación -- Seguimiento al plan tecnológico inmediatamente anterior -- Cruce DOFA -- Vigilancia científico -tecnológica y competitiva especialidad energía eléctrica -- Vigilancia científico -tecnológica y competitiva especialidad electrónica y automatización -- Vigilancia científico -tecnológica y competitiva especialidad Mecánica Industrial -- Vigilancia científico -tecnológica y competitiva especialidad Informática, diseño y desarrollo de software -- Vigilancia científico -tecnológica y competitiva especialidad materiales para la industria -- Vigilancia científico -tecnológica y competitiva especialidad Automotor -- Vigilancia científico -tecnológica y competitiva especialidad Textil, confección y diseño -- Vigilancia científico -tecnológica y competitiva especialidad construcción e infraestructura -- Vigilancia científico -tecnológica y competitiva servicios tecnológicos -- Fase II: formulación estratégica -- Mapa de trayectoria tecnológica -- Validación con expertos -- Construcción de escenarios -- Formulación estratégica -- Métodos prospectivos utilizados -- Formulación estratégica -- Fase III: recomendaciones estratégicas -- Recomendaciones estratégicas especialidad energía eléctrica -- Recomendaciones estratégicas especialidad electrónica y automatización -- Recomendaciones estratégicas especialidad mecánica industrial -- Recomendaciones estratégicas especialidad Informática, diseño y desarrollo de software -- Recomendaciones estratégicas especialidad materiales para la industria -- Recomendaciones estratégicas especialidad Automotor -- Recomendaciones estratégicas especialidad Textil, confección y diseño -- Recomendaciones estratégicas especialidad construcción e infraestructura -- Recomendaciones estratégicas Sennova -- Servicios tecnológicos -- Introducción e información general -- Planteamiento de la necesidad u oportunidad -- Objetivos -- Desarrollo de la vigilancia científico-tecnológica -- Resultados de vigilancia tecnológica con base en análisis de patentes -- Identificación de tecnologías y sublíneas tecnológicas -- Comportamiento de los aceros -- Vigilancia normativa y regulatoria -- Vigilancia tecnológica -- Vigilancia competitiva -- Vigilancia comercial -- Resultados -- Conclusiones y recomendacionesna556 página

Treatment with tocilizumab or corticosteroids for COVID-19 patients with hyperinflammatory state: a multicentre cohort study (SAM-COVID-19)

Objectives: The objective of this study was to estimate the association between tocilizumab or corticosteroids and the risk of intubation or death in patients with coronavirus disease 19 (COVID-19) with a hyperinflammatory state according to clinical and laboratory parameters. Methods: A cohort study was performed in 60 Spanish hospitals including 778 patients with COVID-19 and clinical and laboratory data indicative of a hyperinflammatory state. Treatment was mainly with tocilizumab, an intermediate-high dose of corticosteroids (IHDC), a pulse dose of corticosteroids (PDC), combination therapy, or no treatment. Primary outcome was intubation or death; follow-up was 21 days. Propensity score-adjusted estimations using Cox regression (logistic regression if needed) were calculated. Propensity scores were used as confounders, matching variables and for the inverse probability of treatment weights (IPTWs). Results: In all, 88, 117, 78 and 151 patients treated with tocilizumab, IHDC, PDC, and combination therapy, respectively, were compared with 344 untreated patients. The primary endpoint occurred in 10 (11.4%), 27 (23.1%), 12 (15.4%), 40 (25.6%) and 69 (21.1%), respectively. The IPTW-based hazard ratios (odds ratio for combination therapy) for the primary endpoint were 0.32 (95%CI 0.22-0.47; p < 0.001) for tocilizumab, 0.82 (0.71-1.30; p 0.82) for IHDC, 0.61 (0.43-0.86; p 0.006) for PDC, and 1.17 (0.86-1.58; p 0.30) for combination therapy. Other applications of the propensity score provided similar results, but were not significant for PDC. Tocilizumab was also associated with lower hazard of death alone in IPTW analysis (0.07; 0.02-0.17; p < 0.001). Conclusions: Tocilizumab might be useful in COVID-19 patients with a hyperinflammatory state and should be prioritized for randomized trials in this situatio

Biocompatibility Study of Electrospun Nanocomposite Membranes Based on Chitosan/Polyvinyl Alcohol/Oxidized Carbon Nano-Onions

In recent decades, the number of patients requiring biocompatible and resistant implants that differ from conventional alternatives dramatically increased. Among the most promising are the nanocomposites of biopolymers and nanomaterials, which pretend to combine the biocompatibility of biopolymers with the resistance of nanomaterials. However, few studies have focused on the in vivo study of the biocompatibility of these materials. The electrospinning process is a technique that produces continuous fibers through the action of an electric field imposed on a polymer solution. However, to date, there are no reports of chitosan (CS) and polyvinyl alcohol (PVA) electrospinning with carbon nano-onions (CNO) for in vivo implantations, which could generate a resistant and biocompatible material. In this work, we describe the synthesis by the electrospinning method of four different nanofibrous membranes of chitosan (CS)/(PVA)/oxidized carbon nano-onions (ox-CNO) and the subdermal implantations after 90 days in Wistar rats. The results of the morphology studies demonstrated that the electrospun nanofibers were continuous with narrow diameters (between 102.1 nm ± 12.9 nm and 147.8 nm ± 29.4 nm). The CS amount added was critical for the diameters used and the successful electrospinning procedure, while the ox-CNO amount did not affect the process. The crystallinity index was increased with the ox-CNO introduction (from 0.85% to 12.5%), demonstrating the reinforcing effect of the nanomaterial. Thermal degradation analysis also exhibited reinforcement effects according to the DSC and TGA analysis, with the higher ox-CNO content. The biocompatibility of the nanofibers was comparable with the porcine collagen, as evidenced by the subdermal implantations in biological models. In summary, all the nanofibers were reabsorbed without a severe immune response, indicating the usefulness of the electrospun nanocomposites in biomedical applications

Chitosan/Polyvinyl Alcohol/Tea Tree Essential Oil Composite Films for Biomedical Applications

Tissue engineering is crucial, since its early adoption focused on designing biocompatible materials that stimulate cell adhesion and proliferation. In this sense, scaffolds made of biocompatible and resistant materials became the researchers’ focus on biomedical applications. Humans have used essential oils for a long time to take advantage of their antifungal, insecticide, antibacterial, and antioxidant properties. However, the literature demonstrating the use of essential oils for stimulating biocompatibility in new scaffold designs is scarce. For that reason, this work describes the synthesis of four different film composites of chitosan/polyvinyl alcohol/tea tree (Melaleuca alternifolia), essential oil (CS/PVA/TTEO), and the subdermal implantations after 90 days in Wistar rats. According to the Young modulus, DSC, TGA, mechanical studies, and thermal studies, there was a reinforcement effect with the addition of TTEO. Morphology and energy-dispersive (EDX) analysis after the immersion in simulated body fluid (SBF) exhibited a light layer of calcium chloride and sodium chloride generated on the material’s surface, which is generally related to a bioactive material. Finally, the biocompatibility of the films was comparable with porcine collagen, showing better signs of resorption as the amount of TTEO was increased. These results indicate the potential application of the films in long-term biomedical needs

Polycaprolactone (PCL)-Polylactic Acid (PLA)-Glycerol (Gly) Composites Incorporated with Zinc Oxide Nanoparticles (ZnO-NPs) and Tea Tree Essential Oil (TTEO) for Tissue Engineering Applications

The search for new biocompatible materials that can replace invasive materials in biomedical applications has increased due to the great demand derived from accidents and diseases such as cancer in various tissues. In this sense, four formulations based on polycaprolactone (PCL) and polylactic acid (PLA) incorporated with zinc oxide nanoparticles (ZnO-NPs) and tea tree essential oil (TTEO) were prepared. The sol-gel method was used for zinc oxide nanoparticle synthesis with an average size of 11 ± 2 nm and spherical morphology. On the other hand, Fourier Transformed infrared spectroscopy (FTIR) showed characteristic functional groups for each composite component. The TTEO incorporation in the formulations was related to the increased intensity of the C-O-C band. The thermal properties of the materials show that the degradative properties of the ZnO-NPs decrease the thermal stability. The morphological study by scanning electron microscopy (SEM) showed that the presence of TTEO and ZnO-NPs act synergistically, obtaining smooth surfaces, whereas membranes with the presence of ZnO-NPs or TTEO only show porous morphologies. Histological implantation of the membranes showed biocompatibility and biodegradability after 60 days of implantation. This degradation occurs through the fragmentation of the larger particles with the presence of connective tissue constituted by type III collagen fibers, blood vessels, and inflammatory cells, where the process of resorption of the implanted material continues