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1
artículo
Publicado 1998
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Thermodynamic simulation models have been developed to observe the behavior of the minor elements Zn, Pb, As, Sb and Bi; as well as the major elements Cu, Fe, Si, 0 and S in the conversion and fusion processes: NORANDA and ISASMELT for the production of copper-rich mattes. The Noranda process shows a steady state model for obtaining a high-grade matte in metallic copper. The lsasmelt process is based on the concept of the two independent reaction sites in the bath (slag-killing interface): rapid oxidation and slow reduction. The heat balance of the process and the distribution thermodynamics of the minor elements are united and expressed in terms of the process variables such as temperature, enriched 02, composition of the charge, degree of matte and content of the magnetite in the Slag and other variables are incorporated into the modeling, which can predict the operating effects of che...
2
artículo
Publicado 2022
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Currently, textile processing plants need to control the conditions associated with the spinning process, being the air conditioning of working environments an important factor in the quality and productivity of these processes. The benefits obtained from the optimization of this air conditioning help to guide a lower energy consumption, helping to improve the positioning of the products and providing profitability in the operation processes. Due to the advantages obtained in the air conditioning process, this work proposes a system that allows reusing the residual energy generated at the outlet of the ventilation ducts. This residual energy is fed into the plant to reduce the high temperatures observed in the ceiling. Consequently, this approach will generate a decrease in the service demand of the air conditioning system and reduce operating costs. Also, to verify this proposal, a mult...
3
artículo
Publicado 1998
Enlace
Enlace
Thermodynamic simulation models have been developed to observe the behavior of the minor elements Zn, Pb, As, Sb and Bi; as well as the major elements Cu, Fe, Si, 0 and S in the conversion and fusion processes: NORANDA and ISASMELT for the production of copper-rich mattes. The Noranda process shows a steady state model for obtaining a high-grade matte in metallic copper. The lsasmelt process is based on the concept of the two independent reaction sites in the bath (slag-killing interface): rapid oxidation and slow reduction. The heat balance of the process and the distribution thermodynamics of the minor elements are united and expressed in terms of the process variables such as temperature, enriched 02, composition of the charge, degree of matte and content of the magnetite in the Slag and other variables are incorporated into the modeling, which can predict the operating effects of che...
4
artículo
Publicado 2023
Enlace
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In this article, a simulation model was developed to propose and evaluate improvements that increase the productivity of the production process of a manufacturing company and at the same time help achieve the company's objectives, for which the Promodel simulation software was used. The study begins with the conceptualization of the model explaining the operation of the production process of the company, detailing the transactions used in the operations and then presenting the layout of the model with the different locations, entities and resources provided by the production process. And finally the results of the model are transcribed with the new values of the variables that intervene in the process and with these values compare it with the current ones and obtain the conclusions of productivity improvement.
5
tesis de maestría
El presente trabajo realizó una comparación económica entre dos procesos de licuefacción de gas natural: el primero llamado Preenfriamiento con propano y refrigerante mixto (C3MR), el cual es el proceso más utilizado en el mundo por las plantas de licuefacción de gas natural de gran capacidad; y el segundo denominado proceso Cascada con fluidos mixtos (MFC), el cual es relativamente nuevo pero eficiente energéticamente. Ambos procesos fueron modelados en Aspen Hysys bajo las mismas condiciones de operación y luego optimizados en MATLAB usando el algoritmo genético. Las funciones-objetivo usadas en la optimización fueron: el costo de capital total (CAPEX), los costos operativos (OPEX) y el costo anual de la planta (TAC).
6
artículo
Publicado 2011
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In this investigation it has been evaluated the current situation of the emergency area that assists adults, in a public hospital of Peru. The software Arena was used to perform discreet simulations, with the objective of obtaining improvement proposals that allow reduce the total time of the patient’s permanency in this area before he is to discharge from hospital or admitted in the hospital. A simulation model was developed where several types of patients were identified that were assisted in the surgery, medicine, and traumatología topics. In some cases clinical analysis was required. For reduce the time of a patient’s permanency in the system diverse possibilities were evaluated, being the best alternative a modification in the schedule of the doctors’ attention in the medicine topic. This solution considers that four doctors assist from 7:00 a.m. to 7:00 p.m. and two doctors ...
7
artículo
Publicado 2011
Enlace
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In this investigation it has been evaluated the current situation of the emergency area that assists adults, in a public hospital of Peru. The software Arena was used to perform discreet simulations, with the objective of obtaining improvement proposals that allow reduce the total time of the patient’s permanency in this area before he is to discharge from hospital or admitted in the hospital. A simulation model was developed where several types of patients were identified that were assisted in the surgery, medicine, and traumatología topics. In some cases clinical analysis was required. For reduce the time of a patient’s permanency in the system diverse possibilities were evaluated, being the best alternative a modification in the schedule of the doctors’ attention in the medicine topic. This solution considers that four doctors assist from 7:00 a.m. to 7:00 p.m. and two doctors ...
8
artículo
Publicado 2015
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This paper considers the proposal, development and numerical simulation of a system that models the behavior of the treatment of HIV-1 using antiretrovirals. The system defined for three dependent variables of the variable t, denoted by X(t)=(x1 (t), x2 (t), x3 (t)) represent the amount of T Lymphocytes "Helpers" (CD4), number of Cytotoxic T Lymphocytes (CD8) Viral load and infection process of HIV-1 at any time t, respectively. The assembly consists of a Nonlinear Ordinary Differential Equations system whose existential domain represents time system evaluation process of infection and viral clearance in a patient with HIV-1. This set of states of Nonlinear Dynamic System, associated with the initial value condition is called Cauchy problem. There are few studies related to the solution of this system, found some of the study are reduced to two variables and others without obtaining the ...
9
artículo
Publicado 2015
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This paper considers the proposal, development and numerical simulation of a system that models the behavior of the treatment of HIV-1 using antiretrovirals. The system defined for three dependent variables of the variable t, denoted by X(t)=(x1 (t), x2 (t), x3 (t)) represent the amount of T Lymphocytes "Helpers" (CD4), number of Cytotoxic T Lymphocytes (CD8) Viral load and infection process of HIV-1 at any time t, respectively. The assembly consists of a Nonlinear Ordinary Differential Equations system whose existential domain represents time system evaluation process of infection and viral clearance in a patient with HIV-1. This set of states of Nonlinear Dynamic System, associated with the initial value condition is called Cauchy problem. There are few studies related to the solution of this system, found some of the study are reduced to two variables and others without obtaining the ...
10
artículo
Publicado 2005
Enlace
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Over the last years, using phenomena models in interpreting and designing of software in metallurgical processes has been increasing. In this present research, a series of experimental test with polymetallic minerals is shown, which have been submitted to Flotation, Filtration, Leaching and Sedimentation processes. Mathematic modelling of such processes is shown, as well as the processing and simulation of the experimental data through the respective models. It is intended to contrast them with data from metallurgical plants for their respective validations. All these results will be used for a better planning and control of industrial variables in a concentrating plant.
11
artículo
Publicado 2005
Enlace
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Over the last years, using phenomena models in interpreting and designing of software in metallurgical processes has been increasing. In this present research, a series of experimental test with polymetallic minerals is shown, which have been submitted to Flotation, Filtration, Leaching and Sedimentation processes. Mathematic modelling of such processes is shown, as well as the processing and simulation of the experimental data through the respective models. It is intended to contrast them with data from metallurgical plants for their respective validations. All these results will be used for a better planning and control of industrial variables in a concentrating plant.
12
artículo
Publicado 2012
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This paper presents an investigation of the extraction of essential oils by steam distillation. The process is analyzed and a model is developed for the extraction of essential oil of eucalyptus in pilot scale with a steam flow of 5.73 g / min. According to the model Dunckhorst-Houghton, which considers the effect of axial dispersion, and the use of optimization procedures to establish the model parameters, excellent agreement was obtained between the amount of oil extracted theoretical and experimental.
13
artículo
Publicado 2022
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This study proposes the simulation of a system for reducing polluting gases produced by a steel foundry by two-stage centrifugation. This simulation seeks to verify the physical principle of centrifugation in two cyclones (Stairmand and Swift types) in serial connection: one with its inlet at the outlet of the other, based on initial gas inlet conditions, as well as the design equations of this equipment. Likewise, it's intended to demonstrate the efficiency of this system by entering the mass composition of the gas, in particulate matter (PM) terms, measuring its new composition at the output, after simulating the gas and particle dynamics. For this, Ansys CFD and Ansys Fluent software are used (with previous data analysis and processing), and Python programming techniques to automate calculations and obtain the optimal design values for the cyclones. This system seeks to be an alternat...
14
artículo
Publicado 2022
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Introduction: Medical education has been affected by social isolation due to the pandemic, and the evaluation of clinical skills in students must opt for options such as clinical simulation. Objective: to describe the evaluation of the degree exam for human medicine interns with multimodal clinical simulation. Clinical evaluation: The structured activity with multimodality from the methodology and location of the participants fulfilled the objective of evaluating and graduating interns. It was carried out through the presentation of case scenarios of two of the major specialties in the intern per student, carried out in a simulation office and a high-fidelity room occupying simulated patients, high-performance simulators, nurse/assistance, function software vital and technical simulation, all of them in person in addition to the student, and the juries remotely who, through observa...
15
artículo
Publicado 2020
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It is important for small growing textile companies to make key decisions based on accurate and reliable information about the present production process and how future changes could affect them. Using traditional mathematical methods it is not possible to accurately and reliably reflect the real stochastic behaviour of processes and activities carried out in this industry. There are, however, information technologies such as the computer simulation technique that allow such information to be obtained taking this behaviour into account.he research carried out a simulation study of the garment making process of a small textile company in order to propose a better distribution of resources by experimenting with a simulation model of the process, In addition, some of the quantitative information obtained with this technique is presented. The results obtained show that making changes in assi...
16
tesis de grado
Publicado 2024
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The clinical analysis laboratory plays a crucial role in the diagnosis and prevention of diseases, consequently, the results of the examinations must be issued under optimal conditions of quality and precision that allow safe medical decisions to be supported. Accreditations such as ISO 15189 are instruments that allow laboratories to ensure, through their criteria and characteristics, results that meet quality standards, ensure traceability and have high reliability, furthermore, the analysis and application of this Standard contribute to the continuous improvement and optimization of resources in clinical laboratories, which generates greater productivity in the processes. In the present investigation, a simulation model of the laboratory service process in a medical center was designed to which proposed improvements were applied considering evaluated criteria of the ISO 15189 Standard...
17
artículo
Publicado 2020
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The implementation of any software development process involves the consumption of critical resources. Software engineers cannot experiment with different development processes before starting them in real projects, due to the time that would entail and the amount of elements that are involved, so it is vital to have tools that allow the pre-visualization of the results of executing the software development process and how the environmental variables affect it, thus being able to anticipate under what conditions the software development process will be deployed. This paper presents the modelling and simulation of a software development process using System Dynamics (SD), which allows the graphical representation of the elements intervening in the software process, and the incorporation of as many relevant elements as possible. As a software costs estimation reference, the COCOMO estimati...
18
artículo
Publicado 2021
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The objective of this article is to describe the satisfaction of students with the use of technological simulation tools in learning in the automatic process control course, as part of the pedagogical update in the context of dis-tance education. The Academic Satisfaction Scale (ESA) was used as a meas-urement instrument, the reliability of the data was performed through Cronbach's alpha, giving a consistencyvalue of 0.949. When developing the re-search, it was determined that 56.8% of the students are satisfied with the aca-demic experience of their learning using technological simulation tools in the virtual environment. On the other hand, 11.4% of students indicated that the content transmitted in this course does not excite them and they do not feel comfortable, these results will allow generating feedback to the teacher in their pedagogical techniques and teaching methods. Likewise,...
19
artículo
Publicado 2023
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Haptic Virtual Reality (HVR) simulators are increasingly crucial in modern clinical education. Within this context, the significance of feedback provided by instructors to students is evident. This feedback can be delivered either face-to-face or remotely, the latter facilitated by an individualized audio and microphone system. However, there is limited literature exploring and illustrating the advantages and disadvantages of these two approaches. Objective: To determine the impact of remote vs. face-to-face feedback on the process of acquiring manual dexterity using an HVR simulator among first-year students at the School of Stomatology of Universidad Peruana Cayetano Heredia. Material and methods: A study was conducted involving 37 participants (mean age = 18.2 years; SD = 3.2 years) without prior dental training. They were randomly assigned to three groups (n1 = 17; n2 = 10; n3 = 10)....
20
artículo
Publicado 2025
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This work focused on proposing a plan for improvement and control of the customer service process in a customer service center, based on a waiting line analysis where it describes all the elements that interact in the system and a statistical analysis of processes to define the state in which it operates. Subsequently, the simulation of processes is applied to represent the system studied, and with it, to be able to evaluate different strategies for improvement and increase in productivity. The following strategies were evaluated: correction of the instability of customer service processes
