The present research aims to include the native Peruvian fruits in the design of drinks with low caloric content. For this purpose, four types of mixed nectares are proposed: A (Pineapple, Camu-camu, Apple and extract of purple Maize), B (Manzana, Sanky and Camu-camu), C (Maracuyá, Mango and Aguaymanto) and D Pineapple and Camu-camu), with a sucrose substitution factor by Stevia of 50%, obtained by a relative intensity of sweetness test. For the selection of the nectar types, a preference classification test was used with 120 panels composed of 18-21 year old students and the data were analyzed with theFriedman test and the Kramer test (α = 0.05), where Obtained formulation A, consisting of 27.9% pulp mixture, 10% corn extract, 57.6% water, 4.06% sugar, 0.19% acidulant, 0.05% Antioxidant, 0.12% stabilizer and 0.05% Stevia powder, as the most preferred nectar. To evaluate its quality, the proximal chemical, physicochemical, microbiological, sensorial acceptability tests were tested using a hedonic scale of 9 points, and its useful life through accelerated tests, using the quality parameters as an indicator of deterioration. From the quality tests, a pH of 3.37 ± 0.08, Brix 6.53 ± 0.30, acidity 0.2868 ± 0.0061, density 1.035 ± 0.006, fats 0.4%, carbohydrates 8.8%, proteins 0.4%, fiber 0.4%, vitamin C 57.4 Mg / 100 g and no caloric content of 40.4 Kcal / 100 g. For a greater acceptability of the drinks it is established that the percentages of incorporation of the fruits are equal to or less than 7.40% in camu-camu, 20.14% in aguaymanto, and 16.67% in sanky, the options may vary depending on the fruits that accompany The formulation. Also, the presence of stevia as a substitute for sucrose by 50% did not give a significant difference in sweetness.

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Stress is one of the most important psychosocial risks and it can produce, among other things, different degrees of anxiety, in work life, in studies or in any field of activities carried out by human beings. Anxiety is a state of mind and a physiological response of the person when facing a situation that causes anguish, fear and mental and emotional blockage. Among young university students, this occurs to a greater or lesser degree and is often not diagnosed or evaluated in its true magnitude. The Covid 19 pandemic has generated a radical change in the teaching modality that has gone to a virtual learning, which has aggravated the usual anxiety levels in students. The aim of this study was to examine the anxiety level of industrial engineering students of different academic levels, in this pandemic environment, to help them cope with this problem. To do this, a study sample was taken and an evaluation instrument was applied that allowed these levels to be established. Relationships were established with the number of credits taken on average and the study cycle of the students in the sample. The results show significant information that can help academic leaders and students themselves to take measures that help improve their anxiety levels.

This article proposes to optimize the planning process of the maintenance service of a company dedicated to the commercialization of analytical instruments using an Emaintenance strategy. The diagnosis was made using Power BI software, centralizing the information on work times in recent years, including the year 2020, an atypical year due to Covid-19 . T he efficiency of each collaborator and the direct work time indicator obtained were analyzed, allowing better decisions to be made in the work planning process. Power BI was chosen as the E-maintenance tool since it allows all the files and information generated by the after-sales staff to be in a centralized location. Likewise, the impact of the maintenance planning and programming process was analyzed, obtaining as a diagnosis that the personnel are dedicated 37.6% to direct work and 62.4% to non-direct work, which represents an efficiency of the man-hour cost of the 35% . Regarding the research methodology, it is of an applicationexperimental level. Achieving as estimated results in the proposal to improve the planning process; direct work time increased by 51% and non-direct work time decreased by 49% , which represents a man-hour cost efficiency of 49% . The case study concludes with the improvement of the planning process and therefore of staff productivity by 36% .