There are several models that emulate the mechanical behavior of biological tissues. Its automation, new materials and manufacturing techniques will enable its use in the near future. This research is based on the use of compressed air in pneumatic muscles that actuate the phalanges. The research is important because it proposes a system that adapts to the needs and economic accessibility or people with limited resources. The problem to solve is that it meets certain standards such as: stable grip and pressure and that it adapts to irregularly shaped objects with more natural movements. The principle of communicating vessels and the force exerted by a fluid on the walls of the container that is used. Consequently, the fluid exerts pressure in all directions. The prosthesis with the design of the Flexy Hand 2 is manufactured by inserting pneumatic muscles to each of the fingers connecting them by means of nylon ropes that are attached to the homemade pneumatic muscles connected to a common manifold, regulating the pressure by means of a valve and a degree of freedom. As a result of the above, it can be concluded that the prototype worked favorably.

Pneumatic traction systems have already been used since Denise Papín, who apparently already had the idea of using compressed air in cars. Currently in Uruguay and India with Armando Miguel Regusci Campomar and the French inventor Guy Negre respectively, they make use of this energy and mention high efficiency in their compressed air motors. In this vein and in order to continue research with this energy, explore non-polluting alternative energies and their efficiency, a Pneumatic-Mechanical traction system is proposed in this research, in a mobile of our own manufacture. The system works under two principles of elementary physics; Pascal's pneumatic energy and Tesla's alternating pneumatic energy that is, alternating pneumatic energy, their efficiency is tested with the energy of the compressed air tank and the displacement energy of the mobile

El control de inventarios y cuentas por cobrar son los recursos más importantes en una empresa, sobre todo en las MIPYMES. Los problemas más comunes son de gestión, administrativo y de planificación como: inventario obsoleto, faltantes, mercancías rezagadas, cuentas incobrables, falta de reportes informativos, etc. Este proyecto se base en un informe técnico previo. El objetivo de este estudio fue el diseño de un modelo de un sistema automatizado para el control de inventarios y cuentas por cobrar en Excel para una MIPYMES, dedicada a la compraventa de ropa, ubicada en la región del Noroeste del estado de Chihuahua, México. La investigación fue aplicada, con enfoque mixto, de corte descriptivo y de análisis. Los métodos de estudio fueron la implementación de procedimientos, actividades y reportes de información para desarrollar un modelo en Microsoft Excel con la herramienta de desarrollador, utilizando macros. Los resultados en este estudio muestran el procedimiento para el control de inventarios y cuentas por cobrar, así como las actividades a realizar y los insumos o reportes que se deben generar en cada proceso y la aplicación en Excel a partir de cinco bases de datos, para registrar las operaciones relacionadas con el control de inventarios y cuentas por cobrar. Se concluye que, con la aplicación de Microsoft Excel, se puede tener un sistema de control económico y eficiente, para generar la información que se requiere para mejorar la gestión y administración de inventarios y cuentas por cobrar.

Background Urinary tract infections (UTIs) are frequently caused by Enterococcus spp. We aim to define the risk factors involved in UTIs caused by Enterococcus. Determine the overall mortality and predictive risk factors. Methods A retrospective in-patients study was conducted with bacteriemic UTIs caused by Enterococcus spp. We compared bacteriemic UTIs caused by Enterococcus spp. vs. a random sample of 100 in-patients with bacteriemic UTIs caused by others enterobacteria. Results We found 106 in-patients with UTIs caused by Enterococcus spp., 51 of whom had concomitant positive blood cultures. Distribution by species was: 83% E. faecalis and 17% E. faecium, with a Charlson comorbidity index of 5.9 ± 2.9. When we compared bacteriemic UTIs caused by Enterococcus spp. vs. bacteriemic UTIs caused by others enterobacteria we found the following independent predictors of bacteriemic UTI by Enterococcus: male sex with an OR of 6.1 (95%CI 2.3–16.1), uropathy with an OR of 4.1 (1.6–10.1), nosocomial infection with an OR of 3.8 (1.4–10.3), urinary cancer with an OR of 6.4 (1.3–30.3) and previous antimicrobial treatment with an OR of 18 (5.2–62.1). Overall, in-patient mortality was 16.5%, which was associated with a higher Sequential Organ Failure Assessment (SOFA) score (> 4), severe comorbidity such as immunosuppression, malignant hemopathy and nephrostomy, or Enterococcus faecium species and its pattern or resistance to ampicillin or vancomycin (p < 0.05). Appropriate empiric antibiotic therapy was not associated with a better prognosis (p > 0.05). Conclusions Enterococcus spp. is a frequent cause of complicated UTI by a profile of risk factors. High mortality secondary to a severe clinical setting and high comorbidity may be sufficient reasons for implementing empiric treatment of patients at risk, although we did not show a higher survival rate in patients with this treatment strategy.