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https://purl.org/pe-repo/ocde/ford#5.02.04
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ODS 3: Salud y bienestar. Garantizar una vida sana y promover el bienestar de todos a todas las edades
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1
artículo
This article comprehensively reviews the implementation and impacts of Lean Manufacturing in the plastics industry, with the aim of synthesizing and evaluating how the adoption of these methodologies has contributed to improving efficiency, reducing costs and optimizing production processes. Using a systematic review methodology, 97 relevant articles were selected. The main results of the review indicate that Lean not only improves operational efficiency and reduces waste significantly, but also encourages the integration of advanced technologies such as Industry 4.0. In addition, a strong focus on sustainability is observed, with Lean facilitating practices that support environmental conservation and carbon footprint reduction. In conclusion, while Lean Manufacturing has proven to be an effective tool for improving operations, its effective implementation requires tailored approaches th...
2
artículo
This article comprehensively reviews the implementation and impacts of Lean Manufacturing in the plastics industry, with the aim of synthesizing and evaluating how the adoption of these methodologies has contributed to improving efficiency, reducing costs and optimizing production processes. Using a systematic review methodology, 97 relevant articles were selected. The main results of the review indicate that Lean not only improves operational efficiency and reduces waste significantly, but also encourages the integration of advanced technologies such as Industry 4.0. In addition, a strong focus on sustainability is observed, with Lean facilitating practices that support environmental conservation and carbon footprint reduction. In conclusion, while Lean Manufacturing has proven to be an effective tool for improving operations, its effective implementation requires tailored approaches th...
3
artículo
The recent detections of gravitational waves have brought renewed attention to the problem of obtaining high accuracy predictions for the gravitational radiation spectra emitted by binary systems with black holes or neutron stars constituents. This work explains how effective field theory applied to gravitation can be used to describe a gravitationally interacting extended object as in the binary system case. Gravitational wave emission from the binary system is shown by using methods that are usually applied in quantum field theory.
4
artículo
The recent detections of gravitational waves have brought renewed attention to the problem of obtaining high accuracy predictions for the gravitational radiation spectra emitted by binary systems with black holes or neutron stars constituents. This work explains how effective field theory applied to gravitation can be used to describe a gravitationally interacting extended object as in the binary system case. Gravitational wave emission from the binary system is shown by using methods that are usually applied in quantum field theory.
5
artículo
Publicado 2023
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Present and future generations have a great concern about environmental issues such as the increase of contamination of natural resources and the loss of plant and animal life on earth due to excessive waste and its poor management, poor production practices and consumption habits. As a result of this concern, the main purpose of this research was to present the strategies and the framework that constitute the circular economy (CE) and to consider its application in Latin America. The methodology included a literature review using Scopus and Dialnet databases, applying the key terms “Circular Economy” and “Latin America”, the selection criteria were based on language, number of citations and publication date, which resulted in a statistical sample of 62 articles and reports. After completing the literature review of CE principal concepts, implementation strategies throughout diff...
6
artículo
Publicado 2009
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The existents methodologies available for the proposal of determination of quantity of solids in the air, have low precision in the mining industry, this work presents an adaptation in a already and classic existent system, what transform it in a more precise one. This innovated methodology presents a big potential also in the fertilizer industry. The innovation of this equipment consists in a recipient with calculated dimensions that is used to “throw” the material that is going to be evaluated, causing the loose or a suspension of the dust; this material is collected through a system of filter, with a support and a special constant vacuum pump. This system is able to collect a representative quantity of particles separated, during a determinated period of time. After this, the system is weighted and the weigh is compared with the initial weigh, giving parameters for the definitions...
7
artículo
Publicado 2015
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The objective of the study was to evaluate the antioxidant activity and use of ethanol extract of Tropaeolum tuberosum Ruiz & Pavón (mashua) as colorant for yogurt. The antioxidant activity was evaluated using DPPH and ABTS methods. The total content of anthocyanins (TA) and polyphenols (TP) was determined by the method of differential pH and Folin-Ciocalteu, respectively. Parameters of CIEL*a*b* system were used to measure the purple color and concentration of pigment used to color natural yogurt "3500", comparing with yogurt commercial blackberry "6224" which was taken as a reference. Both yogurt samples were stored under refrigeration (4°C ± 1) for 28 days and color and pH were measured every 4 days. For sensory analysis the acceptance test was applied (p<0,05). The contents of TA and TP in the extracts analyzed were 192,63 ± 1,28 mg of cyanidin-3-glucoside/100g fresh weigh...
8
artículo
Publicado 2008
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The design of a control system in certain processes in the industry is the main problem for engineers. Since the input and output data of a certain process are obtained, we can know the response of the system, the same that allows us to study a model prototype and using the theory of nonlinear control the limit cycles are predicted, we can propose a function descriptive whose parameters will be necessary to implement the Neurocontroller that will be trained with the Back propagation algorithm. In our case, we address the design and implementation of a Neurocontroller in the LabVIEW graphical program environment under the supervision of the Simulation Toolkit. Our application is the control of a prototype physical system whose model can represent first and second order systems. The model of the process dynamics was obtained experimentally, for which the identification of parameters was ap...
9
artículo
Publicado 2022
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En este trabajo se determinaron los parámetros para la limpieza por ablación láser de contaminantes depositados mediante atracción electrostática sobre sustratos de láminas de acetato de celulosa (OHP) y su análisis mediante la medición de la transmitancia de la superficie irradiada en función de la energía por pulso de un láser Nd:YAG. La energía fue controlada mediante el tiempo de retraso del Q-switch usando longitudes de onda en la región infrarroja de 1064 nm y luz visible verde de 532 nm. Se utilizó un máximo de 10 pulsos láser con una frecuencia de 1 Hz sobre lo s sustratos con contaminantes con 9 μm y 11 μm de espesor. Se encontró que para la limpieza láser sin daños de sustratos de la s láminas OHP, es conveniente usar una longitud de onda de 1064 nm, con una fluencia de 0.4 J/cm2 y usando un máximo de 6 pulsos. Se verificaron las ventajas de la radiación...
10
artículo
La2O3/CaO catalysts were prepared at different weight percentages of La2O3.Por the coprecipitation method described porRaO, CaCO3 is prepared and then it was impregnated in a solution of La (NO) 3.6H2O thus obtaining the catalyst precursor . precursors dried at 393K and calcined at 973K, obtaining 0-15% La2O3/CaO catalysts. XRF elemental qualitative analysis was performed. By FTIR carbonates adsorbed species was observed. The presence of La2O3 and CaO phases was confirmed by XRD and BET surface area of the catalyst giving values less than 9m2 / g The measurement of the activity for La2O3/CaO cataluzador 15% was measured, it was performed in a microreactor quartz, using a feed rate of methane / oxygen ratio of 4:1 and the reaction temperatures of 923, 973 and 1023 K, resulting in a maximum conversion temperature of 1023K of 26.84% methane conversion and selectivity to C2 + of 38.17%...
11
artículo
Publicado 2022
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The objective of this research was to analyze the perception of three supermarkets before the application of the tax on the consumption of plastic bags, considering that their exaggerated use is the cause of environmental deterioration. The applied methodology had a focus on qualitative, exploratory, phenomenological, the design fits are non-probabilistic for convenience, based on experiences of three taxes specialist supermarkets, using semi-structured interviews as an instrument. As a result of the analysis of interviews conducted before the modification of the norm of the consumption tax on plastic bags (ICBP), on tax issues and the effectiveness, there are shortcomings; because only a small sector has been fulfilled, there are also many limitations due to informality since the law was established N.° 30884, it can be seen that there is a significant reduction consumption of single-u...
12
artículo
Publicado 1956
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The Conway microdiffusion method, using a closed chamber system, allows the determination of substances susceptible to volatilization and appropriate fixing means. This system comprises two compartments located so that if one of them put the substance to volatilize and other appropriate fixative or trapping, airtight chamber when a stream of gas from the field will be set to release towards the fixation; current is given by the simple set of gas pressure differences on both surfaces. The body is isolated and then analyzed quantitatively by titration, potentiometry, photocolorimetry, etc.
13
artículo
Publicado 2019
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The presence of hydrocarbons in soils and waters represents a serious problem of global environmental pollution, often caused by accidental spills of petroleum products such as diesel. Natural bioremediation is shown as an environmentally friendly alternative. The native communities of microorganisms present in a body affected by pollution, metabolicallycooperate with each other to survive; these have developed mechanisms of adaptation to adverse environments using the contaminating agent itself as a substrate. Currently, bioremediation systems require long times to obtain efficient degradation results; that is why, in the present investigation, microorganisms from a soil with the presence of diesel have been isolated from spills, for which the physicochemical characterization of contaminated soil was carried out. Next, two strains were isolated and molecularly identified, determining th...
14
artículo
La2O3/CaO catalysts were prepared at different weight percentages of La2O3.Por the coprecipitation method described porRaO, CaCO3 is prepared and then it was impregnated in a solution of La (NO) 3.6H2O thus obtaining the catalyst precursor . precursors dried at 393K and calcined at 973K, obtaining 0-15% La2O3/CaO catalysts. XRF elemental qualitative analysis was performed. By FTIR carbonates adsorbed species was observed. The presence of La2O3 and CaO phases was confirmed by XRD and BET surface area of the catalyst giving values less than 9m2 / g The measurement of the activity for La2O3/CaO cataluzador 15% was measured, it was performed in a microreactor quartz, using a feed rate of methane / oxygen ratio of 4:1 and the reaction temperatures of 923, 973 and 1023 K, resulting in a maximum conversion temperature of 1023K of 26.84% methane conversion and selectivity to C2 + of 38.17%...
15
artículo
Publicado 2021
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In this work, the modeling of the volatility of financial assets is studied using a Bayesian approach. DCC - GARCH models are used, for the errors of these models asymmetric and leptokurtic probability distributions are considered, which are parameterized according to the asymmetry and the weight of the tails, therefore these parameters are also estimated. The estimation of the model parameters was performed using the MCMC methodology Metropolis - Hastings random walk algorithm using the software R package bayesDccGarch, daily data from 04/01/2015 - 01/31/2020 of the stock indices of: Frankfurt are considered (DAX), Tokyo (NIKKEI225), Paris (CAC40), and Lima (BVL). The Bayesian approach to estimating the model parameters facilitates interpretation and provides the ability to insert a priori information for the parameters.
16
objeto de conferencia
Publicado 2020
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El texto completo de este trabajo no está disponible en el Repositorio Académico UPN por restricciones de la casa editorial donde ha sido publicado.
17
artículo
Publicado 2022
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Some provisions of our Civil Code are clear regarding their content and others are somewhat vague and questionable. A regulation that generates controversy in terms of its concept and use is the one referring to the legal acts or business that has led the Supreme Judges to issue contradictory and erroneous sentences based on the outdated notion or out of context. The aim of this paper is to analyze the methodology used by the Supreme Court in the IX Civil Cassation Plenary for the argumentation of the scope that it has given to the notion of manifest nullity, as a cause of nullity that can be easily noticed in the same contract or through other evidence. It is extremely important to establish the methodological errors incurred by the Supreme Court when improperly using what is treated in the doctrine, laws and national and international jurisprudence, to later contrast its limitations an...
18
artículo
Publicado 2024
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The valorization and use of lignocellulosic biomass from food processing to obtain value-added products is crucial to improve sustainability and reduce waste management costs. This potential for cost reduction is a reason for optimism, as it allows agro-industrial waste to be transformed into valuable resources, contributing to the circular economy. This study focused on the compositional and structural characterization of eleven types of lignocellulosic biomass (LCB) to evaluate their potential in producing nanopolysaccharides and polyhydroxyalkanoates. Parameters such as humidity, ash, proteins, extractives, structural carbohydrates, and lignin were analyzed in passion fruit peels, artichoke bracts, asparagus peels, lemon peels, orange peels, avocado seed, potato peels, cassava peels, sugar cane bagasse, rice husk, and rice straw. The results showed that fruit peels and other waste had...
19
artículo
Publicado 2021
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The objective of the research was to determine the influence of the Canvas business model on the Business Productivity of the olive companies of the La Yarada Los Palos District, in 2019. The methodology used consisted of a correlational analytical design, we worked with two olive companies in the sector called Sur Oliva S.A.C. and Baumann Crosby S.A. Where the Canvas business model was evaluated from two perspectives; Canvas and the questionnaire of 13 questions applied to 20 workers and customers, business productivity was evaluated with a questionnaire of 9 questions using the Likert scale to 20 workers and customers of the units of study. The results of the companies under study from the nine elements of the Canvas model were; Key resources, Activities, Key alliances. Also the Value Proposition. In addition, the type of market segment, customer relationships, distribution channels. F...
20
artículo
Publicado 2020
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The study sought to verify the effect of aformative research program on investigative skillsin Nursing students at the National University ofHuancavelica. The research was applied witha pre-experimental design. Questionnaires andobservation cards were administered to a sampleof 62 students from the first cycle "A" and "B",using the simple random sampling technique. Theresults obtained in the investigative skills in the pretest indicate that 9% of the students carry out thebibliographic search, 12% use technological means,7% apply methodology, 4% apply the communicationof results and 45% apply the practice of values. Aftercompleting the formative research, the investigativeskills measured in the post test indicate that 33% ofthe students carry out a bibliography search, 61%use technological means, 35% apply methodology,39% apply the communication of results and 11%apply the practice of va...
