Correlation between obesity and severity of distal radius fractures

Introduction: The incidence of obesity has increased significantly worldwide. Our hypothesis was that patients with obesity have a more severe distal radius fracture and we realized a study to evaluate this correlation between obesity and severity of distal radius fractures caused by low-energy injuries. Materials and methods: A total of 114 patients with distal radius fracture were examined in

New stable by construction autonomous aerial vehicle: configuration and dynamic model.

[ES] En los últimos años, diferentes estrategias y modelos matemáticos se han desarrollado para el análisis y control de vehículos aéreos no tripulados. El presente artículo amplía este panorama al enfocarse en un sistema aéreo no tripulado estable por construcción. Gracias a su diseño, el sistema reportado disipa la energía que recibe por la acción de perturbaciones externas. El sistema propuesto cuenta con un rotor único para el desarrollo de diferentes tipos de vuelo. Este artículo reporta el concepto de diseño del sistema aéreo no tripulado, la estructura de su modelo dinámico de nueve grados de libertad, un conjunto de simulaciones numéricas que permiten analizar el comportamiento del modelo desarrollado y los primeros resultados experimentales que validan la estabilidad por construcción del vehículo aéreo autónomo. Los dos aspectos más significativos e innovadores reportados en este artículo son el uso de un rotor único orientable para la ejecución de diferentes modos de vuelo y la propiedad inherente del sistema tal que sus estructuras, externa e interna, son estables por construcción.[EN] In recent years, different strategies and mathematical models have been developed in order to analyze and control unmanned aerial vehicles. This article expands this panorama by focusing on a, stable by construction, unmanned aerial system. Thanks to its design, the reported system dissipates the energy received by the action of external disturbances. The proposed vehicle has a unique rotor in order to perform different flight modes. This article reports the design concept of the aerial system, the mathematical structure of its nine degrees of freedom dynamic model, a set of numerical simulations allowing the analysis of the behavior of the developed model and the first experimental results that validate the stability, by construction, of the aerial vehicle. The two most significant and innovative aspects reported in this article are the use of a single orientable rotor to perform different flight modes and the inherent property of the system that makes it stable by construction.Este trabajo fue apoyado por la Universidad Autónoma del Estado de México bajo el proyecto de investigación: Desarrollo de un Vehículo Esférico Aéreo Autónomo con clave 3818/2014/CIB. Eduardo Sánchez Fontes agradece el financiamiento por la beca CONACYT CVU 553663.Sánchez-Fontes, E.; Avila Vilchis, JC.; Vilchis-González, AH.; Saldivar, B.; Jacinto-Villegas, JM.; Martínez-Mendez, R. (2020). 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Modelling and control of a convertible VTOL aircraft. In: Proceedings of the 45th IEEE Conference on Decision and Control. pp. 69-74. https://doi.org/10.1109/CDC.2006.376915Escareño, J., Sanchez, A., Garcia, O., Lozano, R., 2008b. Triple tilting rotor mini-uav: Modeling and embedded control of the attitude. In: American Control Conference. pp. 3476-3481. https://doi.org/10.1109/ACC.2008.4587031Flores, G., Lozano, R., 2013. Transition flight control of the quad-tilting rotor convertible mav. In: International Conference on Unmanned Aircraft Systems (ICUAS). pp. 789-794. https://doi.org/10.1109/ICUAS.2013.6564761Garcia, P., Lozano, R., Dzul, A., 2006. Modelling and control of mini-flying machines. Vol. 48. Springer London. https://doi.org/10.1109/taes.2012.6324687Jacinto-Villegas, J. M., Satler, M., Filippeschi, A., Bergamasco, M., Ragaglia, M., Argiolas, A., Niccolini, M., Avizzano, C. A., Oct. 2017. A novel wearable haptic controller for teleoperating robotic platforms. 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Chinese Journal of Aeronautics 30 (1), 135-148. https://doi.org/https://doi.org/10.1016/j.cja.2016.11.001Lozano, R., 2013. Unmanned Aerial Vehicles: Embedded Control. Vol. 42 of ISTE. Wiley. https://doi.org/10.1002/esp.4142Mendelow, B., Muir, P., Boshielo, B., Robertson, J., 2007. Development of e-juba, a preliminary proof of concept unmanned aerial vehicle designed to facilitate the transportation of microbiological test samples from remote rural clinics to national health laboratory service laboratories. South African Medical Journal 15, 1021-1030. https://doi.org/10.1002/lom3.10222Mohamed, M. K., Lanzon, A., 2012. Design and control of novel tri-rotor uav. In: Proceedings of 2012 UKACC International Conference on Control. pp. 304-309. https://doi.org/10.1109/CONTROL.2012.6334647Motlagh, N. H., Bagaa, M., Taleb, T., Feb. 2017. UAV-based iot platform: A crowd surveillance use case. 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VISUAL PPINOT: A Graphical Notation for Process Performance Indicators

Process performance indicators (PPIs) allow the quantitative evaluation of business processes, providing essential information for decision making. It is common practice today that business processes and PPIs are usually modelled separately using graphical notations for the former and natural language for the latter. This approach makes PPI definitions simple to read and write, but it hinders maintenance consistency between business processes and PPIs. It also requires their manual translation into lower-level implementation languages for their operationalisation, which is a time-consuming, error-prone task because of the ambiguities inherent to natural language definitions. In this article, Visual ppinot, a graphical notation for defining PPIs together with business process models, is presented. Its underlying formal metamodel allows the automated processing of PPIs. Furthermore, it improves current state-of-the-art proposals in terms of expressiveness and in terms of providing an explicit visualisation of the link between PPIs and business processes, which avoids inconsistencies and promotes their co-evolution. The reference implementation, developed as a complete tool suite, has allowed its validation in a multiple-case study, in which five dimensions of Visual ppinot were studied: expressiveness, precision, automation, understandability, and traceability

Childhood acute leukemias are frequent in Mexico City: descriptive epidemiology

<p>Abstract</p> <p>Background</p> <p>Worldwide, acute leukemia is the most common type of childhood cancer. It is particularly common in the Hispanic populations residing in the United States, Costa Rica, and Mexico City. The objective of this study was to determine the incidence of acute leukemia in children who were diagnosed and treated in public hospitals in Mexico City.</p> <p>Methods</p> <p>Included in this study were those children, under 15 years of age and residents of Mexico City, who were diagnosed in 2006 and 2007 with leukemia, as determined by using the International Classification of Childhood Cancer. The average annual incidence rates (AAIR), and the standardized average annual incidence rates (SAAIR) per million children were calculated. We calculated crude, age- and sex-specific incidence rates and adjusted for age by the direct method with the world population as standard. We determined if there were a correlation between the incidence of acute leukemias in the various boroughs of Mexico City and either the number of agricultural hectares, the average number of persons per household, or the municipal human development index for Mexico (used as a reference of socio-economic level).</p> <p>Results</p> <p>Although a total of 610 new cases of leukemia were registered during 2006-2007, only 228 fit the criteria for inclusion in this study. The overall SAAIR was 57.6 per million children (95% CI, 46.9-68.3); acute lymphoblastic leukemia (ALL) was the most frequent type of leukemia, constituting 85.1% of the cases (SAAIR: 49.5 per million), followed by acute myeloblastic leukemia at 12.3% (SAAIR: 6.9 per million), and chronic myeloid leukemia at 1.7% (SAAIR: 0.9 per million). The 1-4 years age group had the highest SAAIR for ALL (77.7 per million). For cases of ALL, 73.2% had precursor B-cell immunophenotype (SAAIR: 35.8 per million) and 12.4% had T-cell immunophenotype (SAAIR 6.3 per million). The peak ages for ALL were 2-6 years and 8-10 years. More than half the children (58.8%) were classified as high risk. There was a positive correlation between the average number of persons per household and the incidence of the pre-B immunophenotype (Pearson's r, 0.789; P = 0.02).</p> <p>Conclusions</p> <p>The frequency of ALL in Mexico City is among the highest in the world, similar to those found for Hispanics in the United States and in Costa Rica.</p

Volviéndonos mejores: necesidad de acción inmediata ante el reto de la obesidad. Una postura de profesionales de la salud.

La creciente epidemia de obesidad ha sido uno de los retos más importantes de salud pública en México durante los últimos años. Con apoyo de la Federación Mundial de Obesidad, en 2021 formamos un grupo de profesionales para identificar y resumir las acciones prioritarias en las que puede enfocarse nuestro país para hacer frente a esta epidemia. Al proceso de desarrollo y discusión de este grupo se sumaron más de 1 000 profesionales de la salud para retomar recomendaciones de documentos y guías de alto nivel previamente publicados. En conmemoración del Día Mundial de la Obesidad, en este 2022 se presenta esta postura como insumo para el desarrollo de acciones en el ámbito profesional y de los diferentes sectores, en la que se incluyen 10 recomendaciones de acción, desde la perspectiva poblacional hasta la atención individualizada, y se enfatiza en la importancia de la participación social, de las intervenciones integrales con visión centrada en la persona y de la sostenibilidad planetaria, además de mejorar la educación y las campañas de difusión, propiciar un ambiente promotor de entornos activos y blindar de conflictos de interés los esfuerzos de prevención y control. La postura hace un llamado para abordar la obesidad de manera seria, con base en la evidencia científica, oportuna e integral, con enfoque de curso de vida, de forma ética y sensible, y sin perpetuar las barreras del estigma de peso en la sociedad

EBV, HCMV, HHV6, and HHV7 Screening in Bone Marrow Samples from Children with Acute Lymphoblastic Leukemia

Acute lymphoblastic leukemia (ALL) is the most common cancer in childhood worldwide and Mexico has reported one of the highest incidence rates. An infectious etiology has been suggested and supported by epidemiological evidences; however, the identity of the involved agent(s) is not known. We considered that early transmitted lymphotropic herpes viruses were good candidates, since transforming mechanisms have been described for them and some are already associated with human cancers. In this study we interrogated the direct role of EBV, HCMV, HHV6, and HHV7 human herpes viruses in childhood ALL. Viral genomes were screened in 70 bone marrow samples from ALL patients through standard and a more sensitive nested PCR. Positive samples were detected only by nested PCR indicating a low level of infection. Our result argues that viral genomes were not present in all leukemic cells, and, hence, infection most likely was not part of the initial genetic lesions leading to ALL. The high statistical power of the study suggested that these agents are not involved in the genesis of ALL in Mexican children. Additional analysis showed that detected infections or coinfections were not associated with prognosis