• Manejo de heridas traumáticas de difícil cicatrización con colgajos microvasculares.

      Ciudad, Pedro; Vargas, Maria I; Castillo-Soto, Ana; Sanchez, Jefferson R; Manrique, Oscar J; Bustos, Samyd S; Forte, Antonio J; Huayllani, Maria T; Soto, Zoila; Grández-Urbina, J Antonio (MA Healthcare Ltd, 2020-10)
      Objective: Present different flap alternatives when performing microvascular free-flap reconstruction in acute hard-to-heal wounds. Method: A retrospective review of patients whose acute hard-to-heal wounds were treated with microvascular free-flap reconstruction. Data on demographics, wound aetiology, diagnostic, previous treatment, free-flap type, free-flap size, complications and follow up were analysed. Results: A total of 20 patients received microvascular free-flap reconstruction. The median age was 39.5 years. Twenty free-flap reconstructions were performed. These included: 3 cross-leg free flap, 1 cross-leg vascular cable bridge flap, 2 fibula osteocutaneous flap, 6 anterolateral thigh (ALT) flap, 3 thoracodorsal artery perforator (TDAP) flap, 3 fasciomyocutaneous flap, and 2 femoral artery fasciocutaneous flap. A patient required microvascular anastomosis due to hematoma; the rest did not present complications during their postoperative. Previous treatment included negative pressure wound therapy (12 patients) and surgical debridement with silver hydrogel dressings (8 patients). Conclusion: Hard-to-heal wounds can be unresponsive to traditional wound healing practices or local flaps. They often require free-flap reconstruction, using tissues similar to those compromised. Microvascular techniques can be an effective alternative. CONFLICT OF INTEREST None.
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    • Occupational Health and Safety Management Model for Mining Contracts

      Cano, Yakelin; Quispe, Grimaldo; Chavez, Heyul; Mamani-Macedo, Nestor; Raymundo-Ibañez, Carlos; Dominguez, Francisco (Springer, 2020-01-01)
      The importance of an occupational health and safety management system (OHSMS) in a mining contract allows the establishment of guidelines to prevent and mitigate accidents that may occur in mines and in exploration areas. Such guidelines are integrated to ensure compliance with regulations with respect to the mining activity (DS 024-2016-EM). For developing a model, the literature was initially reviewed (scientific articles and research studies were used as the background), development techniques were established, and an OHSMS was proposed, with prior evaluation from the contractor. Subsequently, this study presents the general requirements, planning, implementation, verification, and the corresponding review by the appropriate authority. Finally, the model is established, supported by tables that will report the current state of the company and the implementation process. This study concludes with the execution of OHSMS in case of mining contracts.
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    • Process management model aligned to the civil service law in public entities of Peru

      Cardenas, Luis; Zapata, Gianpierre (Springer, 2021-01-01)
      In Peru, under the framework of the National Policy for the Modernization of public management by 2021, it is intended that state institutions enter the Civil Service Regime that seeks to continuously improve the public administration in order to avoid disorder in hiring, remuneration excessive, breaches of the rights of the servers, among others, which are currently causing delays and poor service to citizens. For this reason, a management model is proposed that allows integrating the guidelines set forth by the Law of Civil Service and the process improvement techniques that will allow the current situation to be identified, prioritizing which are the critical processes and thus being able to define an improvement plan integrating the different areas within the institution.
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    • Productivity model focused on six sigma and lean manufacturing to improve the quality of service in smes in peru

      Cardenas, Luis; Zapata, Gianpierre (Springer, 2021-01-01)
      In the Peruvian market there is a great demand for the improvement of the service and quality of the products, that is why many SMEs look for low-cost alternatives that allow them to optimize their activities and thus be able to assure the quality of the service. The problem is that there are many difficulties when implementing tools or techniques due to high costs or lack of knowledge, therefore a productivity model is proposed focused on six sigma and lean manufacturing methodologies in order to adapt the needs of SMEs with 4 phases can analyze, design, implement and monitor requirements in order to reduce mismanagement of service quality, cost savings and decrease product returns.
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    • Ventilation System Simulation Model at a Mine

      Artica, I.; Quispe, G.; Raymundo-Ibañeez, C. (IOP Publishing Ltd, 2019-11-25)
      This research project modeled and simulated a ventilation system at a Mining Concession, obtaining real-time information regarding the fans used to ventilate the mine. The simulation was developed using the VENTSIM 5 software, which also helped define the number of fans and the operating parameters required, field information, mine dimensions, the mining method, production, geothermal gradient, gas emission, air stream, and air pressure. In addition, the results from software operation revealed the need to open chimneys and use fans. Furthermore, the results also suggest that a specialist dedicated to ventilation and fan maintenance must be hired to formalize mining operations as per the Occupational Safety and Health Mining Regulations from Executive Action No. 024-2016-EM as this Mining Concession is currently operating without license.
      Acceso abierto