Vicerrectorado Académico y de Investigación
http://hdl.handle.net/10757/621168
2024-03-19T13:52:31ZAnalysis and Design of a Non-Invasive Wood Moisture Sensor
http://hdl.handle.net/10757/673104
Analysis and Design of a Non-Invasive Wood Moisture Sensor
Avalos, Mariel; Salazar, Jorge; Kemper, Guillermo; Raymundo, Carlos; Cruz, Cesar
This paper presents an analysis and design of moisture sensor for South American wood species. The proposed sensor is designed to non-invasively measure the estimated moisture content of a piece of wood based on its dielectric properties. The article provides the methodology for designing and developing an inter-digital capacitance sensor, along with its implementation using a multi-stage amplifier circuit.
2023-01-01T00:00:00ZDevelopment of a turbine spirometer prototype and signal digitalization
http://hdl.handle.net/10757/669622
Development of a turbine spirometer prototype and signal digitalization
Chavez, Heyul; Herrera, Carlos; Tejada, Felix Llanos; Mayra, Jorge Bazan; Moguerza, Javier M.; Raymundo, Carlos
The present research is part of the project called PHUKUY, which is a low-cost portable digital spirometer prototype designed for remote monitoring of patients with COPD and COVID-19. It also includes additional sensors for improved patient monitoring. This article presents the development of the spirometry module. A turbine spirometer was chosen for its small and lightweight size, easy cleaning and maintenance, and low-cost implementation, which allows for portability. The airflow was successfully digitized, and its direction was detected using a microcontroller, a pair of IR receivers and emitters. This information was then sent via Bluetooth to be displayed in real-Time on a mobile phone. For a 3-liter calibration, a maximum error of ±0.115 liters and a standard deviation of 0.051 were achieved.
2023-01-01T00:00:00ZApplication of Lean Manufacturing to Improve the Duct Production Process of an Air Conditioning Company in the Year 2021
http://hdl.handle.net/10757/668729
Application of Lean Manufacturing to Improve the Duct Production Process of an Air Conditioning Company in the Year 2021
Peralta, Anthony; Valverde, Leysi; Salvador, Rebeca; Quispe, Grimaldo; Dominguez, Francisco; Raymundo, Carlos
The article's objective was the implementation of the lean manufacturing methodology in the production process of an air conditioning metal processing plant. For this, the methodology of 2 phases was used. The company and its current operation, structure, products, and work plan are presented in the first phase, demonstrating its main deficiencies. In phase 2, an improvement plan was made with lean manufacturing tools applied to the deficit of phase 1. As a result of the implementation of these tools, 64%, 80%, 71% and 50% of space in the measuring, cutting, bending, and welding stations, respectively, and an improvement in production times were obtained. Based on the study results, it is concluded that the application of lean manufacturing benefited the company by drastically improving its production process and work environment.
2023-03-01T00:00:00ZThe Demand Driven MRP Implementation in Complex Manufacturing Industries: A Systematic Literature Reviews
http://hdl.handle.net/10757/668728
The Demand Driven MRP Implementation in Complex Manufacturing Industries: A Systematic Literature Reviews
Benavente, Daniel; Peralta, Stephano; Quispe, Grimaldo; Moguerza, Javier; Raymundo, Carlos
Since its creation in 2011, the DDMRP planning method has been catalogued as an important tool to deal with the high variability of the environment, especially in demand, since it allows modifying inventory levels without neglecting the level of service and quality of the products. However, the volume of research available on this method is small, even more, so those considering the application in complex industries. The objective of this research was to analyze the available literature about the application of the model in complex industries, considering its application trends, buffer positioning and improvement target factors. In addition, it allowed identifying areas that other researchers should study in the future. This systematic review scrutinized different applications of the method in complex industries worldwide by analysing literature in different languages. This research identified that certain characteristics of the DDMRP require further study, especially real and simulated applications. On the one hand, more research is required in applying the last two phases of the method (planning based on demand and visible and collaborative execution), as well as the need to deepen in economic terms and the possibility of combining it with other similar or complementary methods. Thanks to this literature review, it was possible to recognize the impact of the implementation of the DDMRP in complex industries, identify the factors that influence its effectiveness and describe the need to delve into various issues that have not yet been analyzed in depth, seeking to understand the best way the studied method.
2023-03-01T00:00:00ZManejo de heridas traumáticas de difícil cicatrización con colgajos microvasculares.
http://hdl.handle.net/10757/656659
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
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.
El texto completo de este trabajo no está disponible en el Repositorio Académico UPC por restricciones de la casa editorial donde ha sido publicado.
2020-10-01T00:00:00ZGaston Acurio: Business model innovation and creation of a Peruvian gastronomic brand
http://hdl.handle.net/10757/656458
Gaston Acurio: Business model innovation and creation of a Peruvian gastronomic brand
Ontaneda, Elizabeth; Quiroga, Guillermo
No presente resumen
El texto completo de este trabajo no está disponible en el Repositorio Académico UPC por restricciones de la casa editorial donde ha sido publicado.
2020-04-17T00:00:00Z