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1
artículo
Publicado 2016
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This paper presents a study that aimed to determine the mechanism of a process for Cr(VI) removal from aqueous solutions, using compost of carnation crop residues as the adsorbent. We assessed whether the microbiota present in the absorbent material affected the removal of Cr(VI) using respirometric measurements and evaluating the removal capacity using sterilized and not sterilized compost. Additionally, the compost was analysed before and after carrying out the Cr(VI) removal process, by quantification of the acidic functional groups and kinetic monitoring of pH, conductivity and redox potential difference. The results showed that, under the conditions used, the microorganisms present in the compost did not affect the process of Cr(VI) removal and that the mechanism can be described by an adsorption model coupled to the reduction, were this adsorption is mainly done on the acidic funct...
2
artículo
Publicado 2021
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In the present study, the control of the pyrolysis temperature was carried out in a gasification process of eucalyptus wood, its prediction is made based on the operating parameters of the reactor to ensure the obtaining of a synthesis gas with the required quality. The results obtained from the mathematical modeling for the prediction of the pyrolysis temperature with the use of artificial intelligence techniques and the development of artificial neural networks are shown, with experimental data of the process. For this reason, an experimental statistical design of type 3n was implemented, with two additional replications, by means of which the training of an artificial neural network capable of predicting the pyrolysis temperature in a downdraft type gasifier with cogeneration was carried out. The prediction of the pyrolysis temperature has an error of 4.6 oC and an adjustment of 93.71...
3
artículo
Publicado 2021
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In the present study, the control of the pyrolysis temperature was carried out in a gasification process of eucalyptus wood, its prediction is made based on the operating parameters of the reactor to ensure the obtaining of a synthesis gas with the required quality. The results obtained from the mathematical modeling for the prediction of the pyrolysis temperature with the use of artificial intelligence techniques and the development of artificial neural networks are shown, with experimental data of the process. For this reason, an experimental statistical design of type 3n was implemented, with two additional replications, by means of which the training of an artificial neural network capable of predicting the pyrolysis temperature in a downdraft type gasifier with cogeneration was carried out. The prediction of the pyrolysis temperature has an error of 4.6 oC and an adjustment of 93.71...
4
artículo
Publicado 2010
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Determining the processes capabilities in companies that develop software is an issue that has gained interest because through them they can be classifi ed at a certain level of capability or maturity, depending on the model used. In addition, some companies have a set of established practices and working methods, in the case of Peru is often based on Rational Unifi ed Process (RUP). This paper presents the theoretical evaluation of the processes capabilities in the operation category of software processes model Moprosoft under the assumption that an organization has properly implemented a set of minimal elements of RUP.
5
artículo
Publicado 2010
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Determining the processes capabilities in companies that develop software is an issue that has gained interest because through them they can be classifi ed at a certain level of capability or maturity, depending on the model used. In addition, some companies have a set of established practices and working methods, in the case of Peru is often based on Rational Unifi ed Process (RUP). This paper presents the theoretical evaluation of the processes capabilities in the operation category of software processes model Moprosoft under the assumption that an organization has properly implemented a set of minimal elements of RUP.
6
artículo
Publicado 2018
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The determination by means of near infrared spectroscopy of critical quality attributes, of interest for the industrial manufacture of pharmaceutical solids, is studied here in order to apply this new methodology more quickly and efficiently as an alternative to conventional methods. The mixing process of the components of an effervescent formula is studied in order to determine the final mixing time in a fast and reliable way, as well as the humidity in intermediate granules of chewable tablets. The objective is to build the quality of the final product, controlling critical quality attributes of intermediate products during the same process by applying Process Analytical Technology (PAT).
7
artículo
Publicado 2023
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The introduction of artificial intelligence methods and techniques in the construction industry has fostered innovation and constant improvement in the automation of monitoring and control processes at construction sites, although there are areas where more studies still need to be conducted. This paper proposes a method to determine the criticality of cracks in concrete samples. The proposed method uses a previously trained YOLOv4 neural network to identify concrete cracks. Then, the region of interest, determined by the bounding box resulting from the neural network model classification, is extracted. Finally, the extracted image is converted to negative grayscale to quantify the number of white pixels above a certain threshold, automatically allowing the system to characterize the fracture’s extent and criticality. The classification module reached a veracity between 98.36% and 99.7...
8
artículo
Publicado 2024
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THE PROJECT PRESENTS THE DESIGN AND IMPLEMENTATION OF AN RPA SYSTEM FOR THE TEACHER QUALIFICATION PROCESS. THE MAIN GOAL OF THE PROJECT IS TO AUTOMATE AND IMPROVE THE ACCURACY OF THE GRADING PROCESS USING TECHNOLOGIES SUCH AS PDF FILE PROCESSING, GRADING ALGORITHMS, AND ARTIFICIAL INTELLIGENCE MODELS. THE PROJECT METHODOLOGY DESCRIBES THE RPA WORKFLOW, WHICH INCLUDES UPLOADING PDF FILES, CONVERTING TO EXCEL, ANALYZING EXCEL SHEETS, AND AUTOMATICALLY GENERATING RATING REPORTS. THE STUDY'S FINDINGS HIGHLIGHT THE IMPORTANCE OF AUTOMATION IN TEACHER QUALIFICATION AND THE POTENTIAL OF RPA TECHNOLOGIES TO IMPROVE THE EFFICIENCY AND QUALITY OF THIS PROCESS. FUTURE AREAS OF RESEARCH ARE SUGGESTED, SUCH AS INCORPORATING MACHINE LEARNING TECHNIQUES FOR CONTINUOUS SYSTEM IMPROVEMENT.. © 2024 LATIN AMERICAN AND CARIBBEAN CONSORTIUM OF ENGINEERING INSTITUTIONS. ALL RIGHTS RESERVED.
9
artículo
Objective: To optimize the process of prior evaluation in mergers and acquisitions in Peru. Method: It is a descriptive and correlational investigation. The comparative law was used as analysis methodology for the law projects under study. Results: In the analysis of the economic impact, the sample consisted of 1 750 companies according to annual sales value and economic sectors such as lawyer services and agroindustries. The results indicated that the Proposals of Application of Thresholds on Projects of Law lack foundation and it has been verified that its uniformly application might be ineffective to all the economic sectors. Conclusions: The improvement of the process of prior evaluation in mergers and acquisitions will create an environment of trust in the CEOs of Peruvian companies, strengthen the capital and securities markets and contribute to the sustained growth of the country ...
10
artículo
Publicado 2021
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This study is based on the evaluation process of the university public policy of distance education and, specifically, the implementation of the Classroom platform, in its didactic and operational dimensions, at the National Autonomous University of Huanta (UNAH), period 2020, in the context of physical and social isolation, which allowed an accurate analysis to make decisions in this regard. To measure such impact, the non-experimental scientific method, descriptive level, was used; likewise, the survey technique, whose instrument is the questionnaire, which was applied to the population of the ordinary teaching staff of the institution. The conceptual frameworks are enriched, exposing reflections from a detailed bibliographic review that analyzes indicators of content, activities, interactivity, resources, administration and aesthetics of the virtual environment. From the analysis...
11
artículo
Publicado 2021
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Objective. The objective of the current study was to evaluate critical nutrients of industrialized foods and compare them with the technical parameters established in the Peruvian regulations, in its two stages of implementation, referring to front-of-package labeling before the beginning of its validity in June 2019. Methods. Cross-sectional study in which the critical nutrients of sodium, total sugar, saturated fat and transfat were analyzed from data declared in the nutritional labels of 511 processed and ultra-processed foods that were part of the products purchased for the consumption of 88 families of students from one private university in Lima. The technical parameters used to evaluate the critical nutrients are those established in the Regulation of Law 30021. All analyses were carried out with Excel and SPSS version 21, Student’s t-statistics and McNemar’s test were used. R...
12
artículo
Publicado 2013
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The realization of the photo-electrochemical process consists in percolating the solution to be treated through an electrolytic reactor, in which the anodes coated with metal oxides remains under the effect of ultraviolet radiation (UV). The solution used in this study was contaminated artificially from fecal samples positive for bacteria and intestinal parasites. The evaluation of the process for the disinfection of water was held in photo-electrical-chemical reactor, with a total volume of 10.0 Lper batch system contaminated with human fecal material. It was used as the -1supporting electrolyte solution of sodium perchlorate at 0.1 mol. Land applying a current density -1of 14 mAwith the aid of a source and a flow rate of 250 L.h. The UVradiation was provided by a mercury vapor lamp of 55 Wwithout bulb shield. The center electrode is inserted through a quartz bulb. Samples were analyzed...
13
artículo
O mundo foi visto prioritariamente com o paradigma da simplicidade que mutila e distorce o fenômeno ou a realidade; isso nos convida a orientar nossa visão em direção a pensamentos complexos. O processo educativo, entendido como uma unidade indivisível, simultânea e permanente, reconhece o ensino, a aprendizagem e a avaliação como um processo único e complexo. O PEAE como didática universitária permite consolidar o desenvolvimento das competências específicas de uma carreira profissional, utilizando o laboratório educacional para canalizar a realização de desempenhos com uma visão complexa e sistêmica, entendendo e assumindo os aspectos ontoepistemológicos da educação universitária.
14
artículo
O mundo foi visto prioritariamente com o paradigma da simplicidade que mutila e distorce o fenômeno ou a realidade; isso nos convida a orientar nossa visão em direção a pensamentos complexos. O processo educativo, entendido como uma unidade indivisível, simultânea e permanente, reconhece o ensino, a aprendizagem e a avaliação como um processo único e complexo. O PEAE como didática universitária permite consolidar o desenvolvimento das competências específicas de uma carreira profissional, utilizando o laboratório educacional para canalizar a realização de desempenhos com uma visão complexa e sistêmica, entendendo e assumindo os aspectos ontoepistemológicos da educação universitária.
15
artículo
Publicado 2013
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Peru, which is a rich country in amount of ores and gold reserves, moreover; it has an attractive minerals sector to the world and of great importance in national economic development. However, in the metallurgy of gold ores, there are minerals called refractory or complex, where free fine gold is trapped or associated with sulfides (pyrite and arsenopyrite), this problem can be seen in the concentrator Tamboraque, which uses inefficient conventional metallurgical processes and of high operating costs. Hence, the present research found an alternative treatment for this type of complex mineral, consisting in a total flotation in a first stage and then a special differential flotation in the second stage, obtaining as a result a reduction of 76.82 % treatmentvolume, 78.31 % the consumption of reagents, 63.64 % presence of toxic reactive in general tailings, 55.85 % and 55.04...
16
artículo
Publicado 2020
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Currently, the National Society of Mining, Petroleum and Energy (SNMPE) states that in recent years the production of gold in Peru has reduced, since in 2016 there was a production of 153 MT, compared to 2005 with a production of 208 MT. Until 2018, a production decrease of 5.4% was established and in 2017 a decrease of 11.3%. Currently there is a need to develop research on gold extraction processes in low recovery minerals with traditionally used processes, due to the complex structure of gold that prevents their extraction. It is necessary to evaluate new processes that are environmentally friendly and that are sustainable in the environmental and economic aspects. In the present work, the applicability of leaching with NaCl and KNO3 in acid medium in a sulphurous gold mineral was evaluated, through the process of leaching with oxidizing sa...
17
artículo
This research aims to analyze the Mobile HANDOVER algorithm evaluating thecharacteristics of the main models. This alternative system is exposed to the problem of applying the HANDOVER Control multicobertura Fuzzy Logic and sets a precedent for continued research on Fuzzy Control applied to Telecommunications. The analysis begins by describing the concept of HANDOVER, then examines the principle of Fuzzy Logic algorithms related mentioning some control of the propagation of the beams of radiation elements Cellular Base Station involved. The evaluation process HANDOVER algorithm is a logical proposal, which aims to improve the decrease in call transfer when applied in similar settings in Mobile Communications 2.75G, 3G, next generation Mesh Networks or 802,21 Networks. The results confirm the decrease with the resulting benefits of reduced system resources.
18
tesis de maestría
The main characteristic of airport networks is their dynamism. The inclusion of a new air route or the insertion or closure of an airport alters the system and can even lead to the collapse of the network. It is for this reason that it is important to develop a Network Analysis, to know its typology, since its characteristics allow to determine the level of service that the system has and allow decision makers to propose strategies that allow them to achieve the efficiency of the system. However, in South America there is a gap in the analysis of airport networks; only Argentina and Brazil have managed to describe their networks and generate proposals for improvement. For this reason, this study has adopted the airport network of Peru, which has 66 authorized public airports and is in the process of increasing the capacity of its international airports and including new airport infrastru...
19
artículo
Publicado 2021
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Welding constitutes a type of permanent joint in the assembly process in the secondary manufacturing industry such as construction for the manufacture of automobiles, aircraft, bridges, tanks, ships, pipes, among others. The objective of this research was to compare the mechanical tensile strength and hardness of welded specimens. The mechanical traction was to evaluate the resistance to breakage of the weld seams by the MIG/MAG process versus the SMAW welding process, on ASTM 36 base material. The hardness was to determine the plastic deformation of the area affected by heat during the fusion process. For this purpose, the universal testing machine was used to determine the stress-strain relationship of each process; while a hardness tester was used for hardness. In this experiment, 12 welded specimens and two non-welded control specimens were used to determine the quantitative deviatio...
20
artículo
Publicado 2021
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The protection by coatings constitutes the most used method of anticorrosive combat, given its effectiveness, economy, universality and ease of application. However, the use of these coatings at an industrial level entails a high consumption of energy and chemical products, as well as a marked environmental impact. One of the ways to minimize the negative effects in this type of process is the use of corrosion inhibitors. This work had the objective of showing the results of an investigation in which an evaluation was carried out for the introduction of corrosion inhibitors in the acid pickling operation of a galvanic workshop. As research methods and techniques, documentary review, observation, experimental studies were used, in addition, mathematical modeling techniques and process optimization were applied. The main results were: the demonstration of the feasibility of the use of form...
