Pub Date : 2021-12-31DOI: 10.35429/jsl.2021.25.8.25.30
C. E. González-Sandoval, Y. Díaz-Burke, Rosario Lizette Uvalle-Navarro, Claudia Verónica Mederos-Torres
Introduction. Diabetes mellitus is a disease which affects recently at least 415 million people around the world. Obesity is the main risk factor for the development of this disease. In the development of insulin resistance influences several factors such as carbohydrates metabolism and the secretion of GLP-1 and GIP. Objective. Correlate levels of GLP-1 and GIP with HOMA in students. Methods. A cross-sectional study was performed, we determine glucose levels using dry chemistry and GIP, GLP-1 and insulin levels were quantified by ELISA technique. A Pearson correlation between HOMA. Besides, we stratify in normal weight, overweight and obesity and we did the correlation in the three groups. Results. 78 students in total. GIP increased according to the BMI and show difference between the three groups p=0.01. The GLP-1 did not modify. HOMA index and GIP had a correlation of 0.36 with a significance p=0.002. In the other hand, HOMA index vs GLP-1 r=0.52 (p=0.001); normal weight r=0.94 (p=0.001), overweight r=0.75 (p=0.001), obesity r=0.045 (p=0.001) respectively. Conclusions. GIP and GLP-1 correlate with HOMA. The better correlation was found in GLP-1 which is higher in people with normal weight and decreases in obesity. The correlation between GIP and HOMA was low.
{"title":"Relation between glucagon-like peptide 1 (GLP-1), Glucose dependent insulinotropic peptide (GIP) and HOMA index in university students","authors":"C. E. González-Sandoval, Y. Díaz-Burke, Rosario Lizette Uvalle-Navarro, Claudia Verónica Mederos-Torres","doi":"10.35429/jsl.2021.25.8.25.30","DOIUrl":"https://doi.org/10.35429/jsl.2021.25.8.25.30","url":null,"abstract":"Introduction. Diabetes mellitus is a disease which affects recently at least 415 million people around the world. Obesity is the main risk factor for the development of this disease. In the development of insulin resistance influences several factors such as carbohydrates metabolism and the secretion of GLP-1 and GIP. Objective. Correlate levels of GLP-1 and GIP with HOMA in students. Methods. A cross-sectional study was performed, we determine glucose levels using dry chemistry and GIP, GLP-1 and insulin levels were quantified by ELISA technique. A Pearson correlation between HOMA. Besides, we stratify in normal weight, overweight and obesity and we did the correlation in the three groups. Results. 78 students in total. GIP increased according to the BMI and show difference between the three groups p=0.01. The GLP-1 did not modify. HOMA index and GIP had a correlation of 0.36 with a significance p=0.002. In the other hand, HOMA index vs GLP-1 r=0.52 (p=0.001); normal weight r=0.94 (p=0.001), overweight r=0.75 (p=0.001), obesity r=0.045 (p=0.001) respectively. Conclusions. GIP and GLP-1 correlate with HOMA. The better correlation was found in GLP-1 which is higher in people with normal weight and decreases in obesity. The correlation between GIP and HOMA was low.","PeriodicalId":192509,"journal":{"name":"Revista de Simulación y Laboratorio","volume":"84 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128600034","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-12-31DOI: 10.35429/jsl.2021.25.8.16.24
A. Hernández-Granados, Dulce K. Becerra-Paniagua, H. Martínez-Valencia
This work presents the effect of atmospheric-pressure plasma (APP) treatment on mesoporous TiO2 (mp-TiO2) layers for antimony sulfide (Sb2S3) solar cells. For this work, it was prepared heterojunctions of antimony sulfide (Sb2S3) thin films solid solution as the absorbing materials and cadmium sulfide (CdS) as a sensitized layer deposited by the successive ionic layer adsorption and reaction (SILAR) technique, the Sb2S3 was obtained by chemical bath deposition (CBD). The photovoltaic characteristics of the solar cells with APP treatment showed a power conversion efficiency (PCE) of 0.54% to 1.04% with APP 0- and 60-seconds treatment, respectively.
{"title":"Atmospheric-pressure plasma treatments applied on titanium dioxide layer for Sb2S3 solar cells applications","authors":"A. Hernández-Granados, Dulce K. Becerra-Paniagua, H. Martínez-Valencia","doi":"10.35429/jsl.2021.25.8.16.24","DOIUrl":"https://doi.org/10.35429/jsl.2021.25.8.16.24","url":null,"abstract":"This work presents the effect of atmospheric-pressure plasma (APP) treatment on mesoporous TiO2 (mp-TiO2) layers for antimony sulfide (Sb2S3) solar cells. For this work, it was prepared heterojunctions of antimony sulfide (Sb2S3) thin films solid solution as the absorbing materials and cadmium sulfide (CdS) as a sensitized layer deposited by the successive ionic layer adsorption and reaction (SILAR) technique, the Sb2S3 was obtained by chemical bath deposition (CBD). The photovoltaic characteristics of the solar cells with APP treatment showed a power conversion efficiency (PCE) of 0.54% to 1.04% with APP 0- and 60-seconds treatment, respectively.","PeriodicalId":192509,"journal":{"name":"Revista de Simulación y Laboratorio","volume":"20 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129737710","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-06-30DOI: 10.35429/jsl.2021.24.8.20.27
José María Aguilera-Méndez, Carlos Juárez-Toledo, Irma Martínez-Carrillo, Roberto Ismael Vera-Popoca
The main objective of the research is to suggest the use of unstructured meshes in the SWAN wave model because structured meshes require more adjustments in geographically small areas such as rivers, beaches or even bays. Third-party tools and data such as bathymetry, Meteorological Research Forecast (WRF), WaveWatch III (WWIII) and Simulating Waves Nearshore (SWAN) models were used to carry out the research. The aforementioned software and its own developments were used in Acapulco Bay, Guerrero, Mexico for the elaboration of maps that would serve as input in the generation of Delaunay diagrams, which in turn were fundamental parts in the configuration of the experiments and, with this, perform the analysis on the images of the simulations. With the results obtained, it is expected to confirm the validity of the wave data for the bay; therefore, it is considered a useful tool in the process of analysing the natural phenomena present in the port.
该研究的主要目的是建议在SWAN波浪模型中使用非结构化网格，因为结构化网格在地理上较小的区域(如河流、海滩甚至海湾)需要更多的调整。第三方工具和数据，如测深、气象研究预报(WRF)、WaveWatch III (wiii)和近岸模拟波(SWAN)模型被用于开展研究。在墨西哥格雷罗州的阿卡普尔科湾，上述软件及其自身的发展被用于绘制地图，这些地图将作为德劳内图生成的输入，而德劳内图又是实验配置的基本部分，并以此对模拟图像进行分析。根据所得结果，有望证实该海湾波浪数据的有效性;因此，它被认为是分析港口自然现象过程中的有用工具。
{"title":"Generation of unstructured meshes using Delaunay triangles for tidal analysis of the port of Acapulco, Mexico","authors":"José María Aguilera-Méndez, Carlos Juárez-Toledo, Irma Martínez-Carrillo, Roberto Ismael Vera-Popoca","doi":"10.35429/jsl.2021.24.8.20.27","DOIUrl":"https://doi.org/10.35429/jsl.2021.24.8.20.27","url":null,"abstract":"The main objective of the research is to suggest the use of unstructured meshes in the SWAN wave model because structured meshes require more adjustments in geographically small areas such as rivers, beaches or even bays. Third-party tools and data such as bathymetry, Meteorological Research Forecast (WRF), WaveWatch III (WWIII) and Simulating Waves Nearshore (SWAN) models were used to carry out the research. The aforementioned software and its own developments were used in Acapulco Bay, Guerrero, Mexico for the elaboration of maps that would serve as input in the generation of Delaunay diagrams, which in turn were fundamental parts in the configuration of the experiments and, with this, perform the analysis on the images of the simulations. With the results obtained, it is expected to confirm the validity of the wave data for the bay; therefore, it is considered a useful tool in the process of analysing the natural phenomena present in the port.","PeriodicalId":192509,"journal":{"name":"Revista de Simulación y Laboratorio","volume":"146 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123320403","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-06-30DOI: 10.35429/jsl.2021.24.8.14.19
Alan Joel Servín-Prieto, J. A. Montemayor-Trejo, Norma Guadalupe Sifuentes-Morín, Enrique Miguel-Valles
A study was conducted to determine the mortality pattern in the tree species of Ahuehuetes in the Río Sabinas bed of the state of Coahuila in the period from 2000 to 2018, using the photointerpretation as an analysis tool of satellite images from the LANDSAT 5 TM sensor, and aerials images obtained using an unmanned aerial vehicle (UAV). The NDVI values were obtained from the reflectance values for three sections of the Sabinas’s River bed, which were the object of study in the present investigation, with the results obtained when performing the Chi-square test, it was possible to quantify the number of living or dead trees in each study area and taking the time factor as the dependent variable (x2 = 144.51; df=3; p<2.2 * e-16). The photointerpretation yielded a total of 517 individuals of the species present at the sampled sites within the established period. 155 specimens were identified for the section of las Adjuntas, of these, three were registered as dead in 2010 and 23 individuals were added for 2018. Later, 111 individuals were registered in the Sabinas section, of which, two were registered as dead in 2010 and 26 more were added for 2018.
{"title":"Multi-temporal photointerpretation analysis of mortality pattern of Ahuehuete (Taxodium mucronatum Ten.) on the coast of the Sabinas River, Coahuila","authors":"Alan Joel Servín-Prieto, J. A. Montemayor-Trejo, Norma Guadalupe Sifuentes-Morín, Enrique Miguel-Valles","doi":"10.35429/jsl.2021.24.8.14.19","DOIUrl":"https://doi.org/10.35429/jsl.2021.24.8.14.19","url":null,"abstract":"A study was conducted to determine the mortality pattern in the tree species of Ahuehuetes in the Río Sabinas bed of the state of Coahuila in the period from 2000 to 2018, using the photointerpretation as an analysis tool of satellite images from the LANDSAT 5 TM sensor, and aerials images obtained using an unmanned aerial vehicle (UAV). The NDVI values were obtained from the reflectance values for three sections of the Sabinas’s River bed, which were the object of study in the present investigation, with the results obtained when performing the Chi-square test, it was possible to quantify the number of living or dead trees in each study area and taking the time factor as the dependent variable (x2 = 144.51; df=3; p<2.2 * e-16). The photointerpretation yielded a total of 517 individuals of the species present at the sampled sites within the established period. 155 specimens were identified for the section of las Adjuntas, of these, three were registered as dead in 2010 and 23 individuals were added for 2018. Later, 111 individuals were registered in the Sabinas section, of which, two were registered as dead in 2010 and 26 more were added for 2018.","PeriodicalId":192509,"journal":{"name":"Revista de Simulación y Laboratorio","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132501400","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-12-31DOI: 10.35429/jsl.2019.21.6.12.18
J. Valle-Hernández, Joanna Díaz-Monroy, Britania Junery Lozano-Olmedo, Apolo Rojas-Ávila
It is very important to carry out vaccination campaigns in the marginalized areas of our country, because they are more vulnerable to contracting diseases, but to do the appropriate containers are needed so that they arrive with their properties and to protect each person. The Seasonal Influenza vaccine is transported in portable refrigerators at a temperature of 2 and 8 ° C, and the storage time is within 3 and 7 days for the first and 12 to 36 hours for the second. This paper presents the modeling and simulation by Computational Fluid Dynamics (CFD) of a refrigerated system, from thermoelectric cells, for the storage of influenza vaccines. The results show the temperature distribution within the refrigerated system and the transfer of heat in each container element, as well as the most appropriate arrangement to keep each vaccine to the optimal storage temperature. Being able to count on portable systems that allow the optimal transfer of vaccines keeping refrigerated in a constant way would have a positive impact on the health of people who live in marginalized areas.
{"title":"Modelado y simulación CFD de un sistema de refrigeración para el almacenamiento de vacunas contra la Influenza Estacional","authors":"J. Valle-Hernández, Joanna Díaz-Monroy, Britania Junery Lozano-Olmedo, Apolo Rojas-Ávila","doi":"10.35429/jsl.2019.21.6.12.18","DOIUrl":"https://doi.org/10.35429/jsl.2019.21.6.12.18","url":null,"abstract":"It is very important to carry out vaccination campaigns in the marginalized areas of our country, because they are more vulnerable to contracting diseases, but to do the appropriate containers are needed so that they arrive with their properties and to protect each person. The Seasonal Influenza vaccine is transported in portable refrigerators at a temperature of 2 and 8 ° C, and the storage time is within 3 and 7 days for the first and 12 to 36 hours for the second. This paper presents the modeling and simulation by Computational Fluid Dynamics (CFD) of a refrigerated system, from thermoelectric cells, for the storage of influenza vaccines. The results show the temperature distribution within the refrigerated system and the transfer of heat in each container element, as well as the most appropriate arrangement to keep each vaccine to the optimal storage temperature. Being able to count on portable systems that allow the optimal transfer of vaccines keeping refrigerated in a constant way would have a positive impact on the health of people who live in marginalized areas.","PeriodicalId":192509,"journal":{"name":"Revista de Simulación y Laboratorio","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114539254","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-12-31DOI: 10.35429/jsl.2019.21.6.1.11
Homero Jiménez-Rabiela, Benjamín Vázquez-González, José Luis Ramírez-Cruz, Pedro García-Segura
Objectives: To show a process to synthesize and analyze a crank mechanism oscillator function generator. Simulate it in a virtual reality environment, without losing its physical characteristic. Evaluate deviations between analytically desired and virtually obtained. Methodology: Using the analytical method described by Hartenberg and Denavit, a graphic package and an electronic spreadsheet; knowing the angle of rotation of the crank, the angular reference position of the crank, the displacement of the oscillator, the extreme values of the independent variable and the function; precision positions, link lengths, eccentricity and oscillator reference position were determined. The links were generated, the mechanism was assembled, analyzing fifteen of its positions. Of the infinite number of existing solutions, five were synthesized. For each solution that justify it, the deviation of the generated function was evaluated with respect to the desired one. Contribution: The friendly, fast, safe, accurate and parametric process was demonstrated; modifying the inputs and checking the update of the outputs, therefore it is a contribution to the scientific progress of the area.
{"title":"Mecanismo Diseñado y Simulado Virtualmente","authors":"Homero Jiménez-Rabiela, Benjamín Vázquez-González, José Luis Ramírez-Cruz, Pedro García-Segura","doi":"10.35429/jsl.2019.21.6.1.11","DOIUrl":"https://doi.org/10.35429/jsl.2019.21.6.1.11","url":null,"abstract":"Objectives: To show a process to synthesize and analyze a crank mechanism oscillator function generator. Simulate it in a virtual reality environment, without losing its physical characteristic. Evaluate deviations between analytically desired and virtually obtained. Methodology: Using the analytical method described by Hartenberg and Denavit, a graphic package and an electronic spreadsheet; knowing the angle of rotation of the crank, the angular reference position of the crank, the displacement of the oscillator, the extreme values of the independent variable and the function; precision positions, link lengths, eccentricity and oscillator reference position were determined. The links were generated, the mechanism was assembled, analyzing fifteen of its positions. Of the infinite number of existing solutions, five were synthesized. For each solution that justify it, the deviation of the generated function was evaluated with respect to the desired one. Contribution: The friendly, fast, safe, accurate and parametric process was demonstrated; modifying the inputs and checking the update of the outputs, therefore it is a contribution to the scientific progress of the area.","PeriodicalId":192509,"journal":{"name":"Revista de Simulación y Laboratorio","volume":"110 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133112378","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-12-31DOI: 10.35429/jsl.2019.21.6.34.44
Andrés De León-Castrejón, Pedro Pablo Hernández-Estrada, D. H. Noriega-Cantú, Alfonso Villegas-Vergara
One of the limitations in agricultural production in the State of Guerrero is the various events of meteorological disasters, with the case of recurrent drought, hurricane winds, high rainfall that cause floods and very high daytime temperatures that directly affect annual crops (corn, beans and sorghum) and perennials (mango, lemon, avocados). In the entity there is little accurate and timely agroclimatic information that serves as a determining factor in the decision-making process of production processes. The present study has the purpose of developing a prototype of low-cost agrometeorological station. The data can be monitored via the Internet 24 hours a day, from the climate variables, such as: environmental temperature, relative humidity, rainfall, solar and ultraviolet radiation, wind speed and direction. With the storage of these climatological data, information will be obtained that contributes to the prevention of diseases and pests in the cultivation of corn, fruit trees and vegetables of economic importance. Reason for which the National Institute of Forestry, Agriculture and Livestock Research and the Technological University of the North Region of Guerrero, are joining forces in the development of a prototype of agrometeorological station.
{"title":"Prototipo de estación agrometeorológica de monitoreo de datos climatológicos","authors":"Andrés De León-Castrejón, Pedro Pablo Hernández-Estrada, D. H. Noriega-Cantú, Alfonso Villegas-Vergara","doi":"10.35429/jsl.2019.21.6.34.44","DOIUrl":"https://doi.org/10.35429/jsl.2019.21.6.34.44","url":null,"abstract":"One of the limitations in agricultural production in the State of Guerrero is the various events of meteorological disasters, with the case of recurrent drought, hurricane winds, high rainfall that cause floods and very high daytime temperatures that directly affect annual crops (corn, beans and sorghum) and perennials (mango, lemon, avocados). In the entity there is little accurate and timely agroclimatic information that serves as a determining factor in the decision-making process of production processes. The present study has the purpose of developing a prototype of low-cost agrometeorological station. The data can be monitored via the Internet 24 hours a day, from the climate variables, such as: environmental temperature, relative humidity, rainfall, solar and ultraviolet radiation, wind speed and direction. With the storage of these climatological data, information will be obtained that contributes to the prevention of diseases and pests in the cultivation of corn, fruit trees and vegetables of economic importance. Reason for which the National Institute of Forestry, Agriculture and Livestock Research and the Technological University of the North Region of Guerrero, are joining forces in the development of a prototype of agrometeorological station.","PeriodicalId":192509,"journal":{"name":"Revista de Simulación y Laboratorio","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128830954","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-09-30DOI: 10.35429/jsl.2019.20.6.9.14
Nora Castillo-Tépox, J. A. Luna-López, José Álvaro David Hernández-De la luz, K. Monfil-Leyva
In this work we present the results of the analysis obtained from the deposit and characterization of thin films of silicon rich oxide (SRO). The films were obtained by hot filament chemical vapor deposition (HFCVD) technique, such films were deposited on silicon substrates p-type. The deposit of thin films was realized considering different distances from source to substrate (DFS) which were 3, 4, 5 and 6 mm. The quantity of precursors (SiO2) was controlled by the distance from the filament to the source, which was 6 mm for this work, the filament was held at 2000°C. A constant 3-minute deposit time was maintained, and the hydrogen flow level was 10 sccm. The films thickness was obtained by using the profilometry technique, the thickness range was from 200 to 600 nm. The vibrational molecular modes of the SRO films were obtained by Fourier Transform Infrared Spectroscopy (FTIR). The films of 3 mm DFS exhibit an optical transmittance of 90%. The optical energy band gap of the thin films varies from 2.2 to 3.3 eV. When an annealing process at 1000°C was carried out for one hour, the SRO films increase their photoluminescence by an order of magnitude approximately.
{"title":"Propiedades ópticas y estructurales de las películas de óxido de silicio rico en silicio obtenidas por la técnica HFCVD","authors":"Nora Castillo-Tépox, J. A. Luna-López, José Álvaro David Hernández-De la luz, K. Monfil-Leyva","doi":"10.35429/jsl.2019.20.6.9.14","DOIUrl":"https://doi.org/10.35429/jsl.2019.20.6.9.14","url":null,"abstract":"In this work we present the results of the analysis obtained from the deposit and characterization of thin films of silicon rich oxide (SRO). The films were obtained by hot filament chemical vapor deposition (HFCVD) technique, such films were deposited on silicon substrates p-type. The deposit of thin films was realized considering different distances from source to substrate (DFS) which were 3, 4, 5 and 6 mm. The quantity of precursors (SiO2) was controlled by the distance from the filament to the source, which was 6 mm for this work, the filament was held at 2000°C. A constant 3-minute deposit time was maintained, and the hydrogen flow level was 10 sccm. The films thickness was obtained by using the profilometry technique, the thickness range was from 200 to 600 nm. The vibrational molecular modes of the SRO films were obtained by Fourier Transform Infrared Spectroscopy (FTIR). The films of 3 mm DFS exhibit an optical transmittance of 90%. The optical energy band gap of the thin films varies from 2.2 to 3.3 eV. When an annealing process at 1000°C was carried out for one hour, the SRO films increase their photoluminescence by an order of magnitude approximately.","PeriodicalId":192509,"journal":{"name":"Revista de Simulación y Laboratorio","volume":"89 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124571213","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-09-30DOI: 10.35429/jsl.2019.20.6.1.8
Patricio Martinez-Zamudio, V. González-Villela, Hector Leon-Nuñez
This article presents the model and simulation of the serial robot configurations of the types RRR and RPR, applying the theories of differential kinematics, to obtain the representation of its mathematical model (Jacobian matrix) and its simulation. The differential kinematics in robotics is the relationship between vector spaces, so it is possible to make the velocity map in the joint space in the end effector workspace. We present the differential kinematic model that is obtained from the position kinematics by differentiation techniques and with the help of the asymmetric matrix we obtain the information that is part of the Jacobian matrix, which allows us to know the velocities of the joint variables as a function of linear and angular velocity in the end effector and vice versa. The simulation of the manipulators is carried out validating the mathematical differential model; through the validation of the differential kinematics of serial chains it is possible to apply the procedure to complicated manipulator robots. The method presented here is the basis of a useful tool for solving complex robots, as in the case of redundant, parallel and hybrid serial manipulator robots.
{"title":"Simulación del Modelo Matemático de la Cinemática Diferencial de Robots Seriales Planos Configuración RRR y RPR","authors":"Patricio Martinez-Zamudio, V. González-Villela, Hector Leon-Nuñez","doi":"10.35429/jsl.2019.20.6.1.8","DOIUrl":"https://doi.org/10.35429/jsl.2019.20.6.1.8","url":null,"abstract":"This article presents the model and simulation of the serial robot configurations of the types RRR and RPR, applying the theories of differential kinematics, to obtain the representation of its mathematical model (Jacobian matrix) and its simulation. The differential kinematics in robotics is the relationship between vector spaces, so it is possible to make the velocity map in the joint space in the end effector workspace. We present the differential kinematic model that is obtained from the position kinematics by differentiation techniques and with the help of the asymmetric matrix we obtain the information that is part of the Jacobian matrix, which allows us to know the velocities of the joint variables as a function of linear and angular velocity in the end effector and vice versa. The simulation of the manipulators is carried out validating the mathematical differential model; through the validation of the differential kinematics of serial chains it is possible to apply the procedure to complicated manipulator robots. The method presented here is the basis of a useful tool for solving complex robots, as in the case of redundant, parallel and hybrid serial manipulator robots.","PeriodicalId":192509,"journal":{"name":"Revista de Simulación y Laboratorio","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127698886","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-06-30DOI: 10.35429/jsl.2019.20.6.15.22
Filemón López-Ortega, Martha Cárdenas-Maciel, Rogelio Serrano-Zepeda, Miguel Ángel Lara-Ceballos
This article describes the simulation and control of a mobile base pendulum (PBM), which consists of a mechanism with two wheels and a vertical cylindrical rod, which can rotate freely on its own axis, then the mobile must move to compensate for the angular displacement of the pendulum. The objective is to develop a mathematical model to simulate the dynamic behavior of the mechanism and thereby develop a Proportional, Integral and Derivative (PID) controller, optimal that manages to maintain this pendulum at a vertical degree in a time ts ≤ 1 second, with an entry angle of ± 10 degrees. The Newton-Euler (NE) methodology was used to determine the dynamic equations of motion, by analyzing the free body diagram and using the physical laws that allow defining the forces acting on the system to achieve the state of equilibrium. These simulations were carried out with the SolidWorks (SimMechanics Link) and Matlab (Simulink) tools, in addition a closed loop system was used to analyze the output signal Y (s) with respect to the input signal U (s). The contributions of this development consist of designing high-precision controllers with the purpose of improving industrial automation processes from the implementation of a control system, in areas such as robotics, marine vehicles, aerospace, to name a few examples.
{"title":"Modelado y simulación del péndulo de base móvil","authors":"Filemón López-Ortega, Martha Cárdenas-Maciel, Rogelio Serrano-Zepeda, Miguel Ángel Lara-Ceballos","doi":"10.35429/jsl.2019.20.6.15.22","DOIUrl":"https://doi.org/10.35429/jsl.2019.20.6.15.22","url":null,"abstract":"This article describes the simulation and control of a mobile base pendulum (PBM), which consists of a mechanism with two wheels and a vertical cylindrical rod, which can rotate freely on its own axis, then the mobile must move to compensate for the angular displacement of the pendulum. The objective is to develop a mathematical model to simulate the dynamic behavior of the mechanism and thereby develop a Proportional, Integral and Derivative (PID) controller, optimal that manages to maintain this pendulum at a vertical degree in a time ts ≤ 1 second, with an entry angle of ± 10 degrees. The Newton-Euler (NE) methodology was used to determine the dynamic equations of motion, by analyzing the free body diagram and using the physical laws that allow defining the forces acting on the system to achieve the state of equilibrium. These simulations were carried out with the SolidWorks (SimMechanics Link) and Matlab (Simulink) tools, in addition a closed loop system was used to analyze the output signal Y (s) with respect to the input signal U (s). The contributions of this development consist of designing high-precision controllers with the purpose of improving industrial automation processes from the implementation of a control system, in areas such as robotics, marine vehicles, aerospace, to name a few examples.","PeriodicalId":192509,"journal":{"name":"Revista de Simulación y Laboratorio","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116316911","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：