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Design of a model for improving emergency room performance using a colored Petri net

Caicedo-Rolón, Alvaro Jr; Guerrero Gomez, Gustavo; Moreno Gamboa, Faustino (Eureka physics and engineeringHarju maakond, Estonia, 2024-01-31)

Emergency rooms are one of the most complex and vital areas of healthcare institutions, which have presented overcrowding, long waiting, and length of stay times, affecting the timeliness, responsiveness, and quality of ...
Design of an automated cheese cutting machine prototype

Espinel Blanco, Edwin; Ardila Delgado, Armando; Acevedo Peñaloza, Carlos Humberto (Contemporary Engineering SciencesBulgaria, 2018-11-30)

This work describes each of the parameters for the design of a prototype of an automated machine to make cuts in different types of cheese, in cubic form and slices. Each mechanical and structural component is designed, ...
Modeling and simulation of an electrolyser for the production of HHO in Matlab- Simulink

Rincón Castrillo, Erick Daniel; Bermudez Santaella, Jose Ricardo; Vera Duarte, Luis Emilio; garcia pabon, juan jose (Colombia, 2019-05-01)

The electrolyzers work through an electrochemical process, their derivatives (H2, O2, and HHO) are used as enriching fuels due to the electrolysis of water, being cleaner than gasoline and diesel. This article presents the ...
Modeling of phycocyanin production from Spirulina platensis using different light-emitting diodes

Niño, Lilibeth; Gelves, German; Rivera, Christian (South African Journal of Chemical EngineeringPaíses Bajos, 2017-07)

Phycocyanin is a high-value chromo-protein used in various industries. In this research, a simulation study of kinetics is carried out to identify different light spectra effects on microbial growth and phycocyanin ...

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Design of a model for improving emergency room performance using a colored Petri net
...
Caicedo-Rolón, Alvaro Jr | 2024-01-31

Emergency rooms are one of the most complex and vital areas of healthcare institutions, which have presented overcrowding, long waiting, and length of stay times, affecting the timeliness, responsiveness, and quality of service. This research aimed to design a detailed patient flow model to improve emergency room performance using the hierarchical timed colored Petri nets. Then, the model was simulated to evaluate scenarios considering tactical decisions such as physician staff planning, operational decisions such as adjusting work schedules, and strategic decisions such as increasing observation beds. The best scenario would reduce the average waiting times for triage II patients by 17.30 % and 47.57 %, and triage III by 33.49 % and 43.49 % for medical consultation in the office or the minor surgery room, respectively. In addition, the waiting time in observation and the rate of patients left without being seen by a physician would be reduced by 92.45 % and 74.67 %, respectively. These results improve the quality and timeliness of the service and avoid putting the patient's health and life at risk. The designed model included more attributes for patients concerning the place of medical care in the emergency room, the number of visits to the physician, and the physician who will care for the patient. Moreover, the simulation model includes observation beds as a limited resource blocking new patient admission. Finally, this model is a tool to support emergency room managers in making short, medium, and long-term decisions to address problems such as overcrowding, long waiting and length of stay times, and high rates of patients left without being seen by a physician

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Design of an automated cheese cutting machine prototype
...
Espinel Blanco, Edwin | 2018-11-30

This work describes each of the parameters for the design of a prototype of an automated machine to make cuts in different types of cheese, in cubic form and slices. Each mechanical and structural component is designed, analyzed and calculated, with the implementation of a compression mechanism with power screw, simulating its operation in the SolidWorks Computer Aided Design (CAD) program, the equipment and accessories that constitute the control system for the automation of the prototype are selected, the programming of the Programmable Logical Control (PLC) in ladder language is carried out. Finally, the operation of the prototype is demonstrated through modeling and simulation with the use of the NI LabVIEW Softmotion module that allows integration with SolidWorks, making the application that involves some components of the prototype and controlling its movements from NI LabVIEW.

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Modeling and simulation of an electrolyser for the production of HHO in Matlab- Simulink
...
Rincón Castrillo, Erick Daniel | 2019-05-01

The electrolyzers work through an electrochemical process, their derivatives (H2, O2, and HHO) are used as enriching fuels due to the electrolysis of water, being cleaner than gasoline and diesel. This article presents the dynamic model of an alkaline electrolyzer that uses an electrolyte (KOH o NaHCO3) dissolved in distilled water to accelerate the production of oxyhydrogen (HHO). The model shows the phase change that occurs inside the electrolytic cell. The EES® software was used to determine the values of enthalpy, entropy, and free energy that vary during the electrochemical reaction; the equations were simulated in Matlab-Simulink® to observe their dynamic behavior. The Simulations presented varying every 5 g the electrolyte until reaching 20 g. The flow rate of HHO with potassium hydroxide (20 g) is higher than 0.02 L / s, and with sodium bicarbonate (20 g) it is above 0.0006 L / s, confirming what the literature of alkaline cells state, that the most efficient electrolyte for its energy conversion is KOH

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Modeling of phycocyanin production from Spirulina platensis using different light-emitting diodes
...
Niño, Lilibeth | 2017-07

Phycocyanin is a high-value chromo-protein used in various industries. In this research, a simulation study of kinetics is carried out to identify different light spectra effects on microbial growth and phycocyanin production from the cyanobacteria Spirulina platensis. The results are compared with experimental data obtained from previous studies, and an acceptable accuracy is achieved in all the evaluated light spectra. Particular emphasis was placed on determining axial kinetic velocities simulated at different spectra regarding the latency, exponential and stationary microbial growth phases. According to the results obtained, cells grown in exponential phase lighted with red spectrum tend to resist the photo-limitation to a greater degree than cell exposure to white, green and yellow light. The latter is because phycocyanin allows a more excellent wavelength absorption from the red light. Contrarily, the light intensity for all spectra is reduced by around 80% at the inner bioreactor area regarding the intensity reached on the equipment surface during the stationary phase. Also, cell growth and phycocyanin production kinetic rates tend to be close to zero for all spectra, considering more than 50% of the inner bioreactor zone. This finding found in this research may be a key factor for the design of new photobioreactors so that these dark areas could be overcome by installing rotating internal lighting systems to guarantee the photosynthesis process of cyanobacteria in all regions of the bioreactor and thus avoid the phenomenon of photo-limitation due to low light intensities.

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Listar por tema "Simulation"

Design of a model for improving emergency room performance using a colored Petri net

Design of an automated cheese cutting machine prototype

Modeling and simulation of an electrolyser for the production of HHO in Matlab- Simulink

Modeling of phycocyanin production from Spirulina platensis using different light-emitting diodes

Envíos recientes

Design of a model for improving emergency room performance using a colored Petri net

Design of an automated cheese cutting machine prototype

Modeling and simulation of an electrolyser for the production of HHO in Matlab- Simulink

Modeling of phycocyanin production from Spirulina platensis using different light-emitting diodes

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Listar por tema "Simulation"

Design of a model for improving emergency room performance using a colored Petri net ﻿

Design of an automated cheese cutting machine prototype ﻿

Modeling and simulation of an electrolyser for the production of HHO in Matlab- Simulink ﻿

Modeling of phycocyanin production from Spirulina platensis using different light-emitting diodes ﻿

Envíos recientes

Design of a model for improving emergency room performance using a colored Petri net

Design of an automated cheese cutting machine prototype

Modeling and simulation of an electrolyser for the production of HHO in Matlab- Simulink

Modeling of phycocyanin production from Spirulina platensis using different light-emitting diodes

Portales Institucionales

Design of a model for improving emergency room performance using a colored Petri net

Design of an automated cheese cutting machine prototype

Modeling and simulation of an electrolyser for the production of HHO in Matlab- Simulink

Modeling of phycocyanin production from Spirulina platensis using different light-emitting diodes