The aim of the present work was to evaluate the feasibility of passion-fruit shell (PFS) biomass as adsorbent material to remove heavy metals from contaminated waters. Model mediums were used, which were composed of distilled water and the respective metal: lead (Pb), chromium (Cr) and copper (Cu), with a dose of 10g of dry PFSbiomass per liter of medium. The residual concentration of each metal was determined by Atomic Absorption Spectrophotometry (AAS). A good adsorption capacity was exhibited by this agro industrial waste, achieving removal levels of 96,93 and 82% for Pb, Cr and Cu, respectively. In addition, the results obtained showed an adequate fit to the Freundlich model (R² > 0.91), on the basis of which, the following values of adsorption capacity (k: 1.7057, 0.6784, 0.3302) and adsorption intensity (n: 0.6869, 2.3474, 1.0499), for Pb, Cr and Cu respectively, were obtained. Our results suggest that Pb, Cr and Cu ions can be removed by more than 80% by using this agro industrial waste, which with a minimum treatment could be used as an adsorbent material in the treatment of metal-contaminated waters.

The main objective of this research is to analyze the failures in production that cause monetary losses in order to minimize them and generate maximum profit in the company Pastelpan "Los Jardines", Trujillo, 2022. The current situation of the company was analyzed, conducting an in-depth study; thus obtaining four main root causes that generate economic losses in the company. Among the main causes that negatively affect the company we have: The lack of supply of stock of cakes, lack of training to operators in production, deficiency in the production cycle and lack of proper maintenance of equipment. The research proposed the use of engineering methodologies to implement in the quality area, which are: Quality House (QFD), Failure Mode and Effects Analysis (FMEA) and Six Sigma - DMAIC. These tools will allow us to improve the operating process, ensure that products are manufactured consistently and on time for customers, avoiding defects and their high costs. In the results, the continuous improvement plan was evaluated through economic indicators, obtaining an Internal Rate of Return of 65.89%, higher than 20% of the discount rate. Likewise, the economic/financial evaluation was carried out, resulting in an NPV of S/24,914.3, higher than the initial investment of S/15,330.00, thus concluding as an effective proposal, establishing the viability of the investment in three years.

A systematic mapping of articles was carried out that propose a management model based on the ITIL methodology, used for the management of information technology services, focused as a basis on the difficulties that an organization may have when trying to implement in the best way and coping with difficulties such as financial, time, and resource constraints, lack of a strategic plan, lack of skills and staff skills. These difficulties must be solved to subsequently implement an adequate service model according to the organization, as are also the other frameworks, ISO/IEC 20000, COBIT or CMMI-SVC, which learned the service life cycle in order to provide a greater value to the business. In the development of this research, areas, interdisciplinary groups and tools are used that satisfy the problem of complex relationship between business and technology. For this reason, we classify the studies into three categories, which closely depend on the needs and solutions that organizations require regarding the implementation of ITIL. As a result, it was obtained that in three years there was an increase in the implementation of the ITIL framework, as well as the good Management of information technology services.