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Revista Tecnica De La Facultad De Ingenieria Universidad Del Zulia最新文献

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Termólisis de Clorooxoacetato de Etilo en Fase Gas: Comparación con Oxoacetato de Etilo y Detalles del Sistema Estático para el Estudio Cinético 氯氧乙酸乙酯气相热解:与氧乙酸乙酯的比较及动力学研究的静态体系细节
Revista Tecnica De La Facultad De Ingenieria Universidad Del Zulia Pub Date : 2020-09-01 DOI: 10.22209/rt.v43n3a01
Andreína Alexandra Reyes Yanes
{"title":"Termólisis de Clorooxoacetato de Etilo en Fase Gas: Comparación con Oxoacetato de Etilo y Detalles del Sistema Estático para el Estudio Cinético","authors":"Andreína Alexandra Reyes Yanes","doi":"10.22209/rt.v43n3a01","DOIUrl":"https://doi.org/10.22209/rt.v43n3a01","url":null,"abstract":"The advantage offered by kinetic studies in the gas phase is that the velocity coefficient is not affected by surfaces, catalysts or solvents that interact with the substrate. So far, gas phase thermolysis of esters derived from oxalic acid have been scarcely studied. In this investigation, the kinetic study of the thermal decomposition of ethyl chlorooxoacetate between 543–593 K and 76–209 mbar was carried out, using a static vacuum system whose operation are widely described. Total pressure measurements and chromatographic products analysis indicates consecutive first order reactions, unimolecular and homogeneous for substrate decarbonylation, followed by ethylene elimination, unlike the ethyl oxoacetate thermolysis, which proceeds by parallel decarboxylation and decarbonylation pathways. Arrhenius equation for the reaction studied between 543.2 – 593.1 K was found to be log k 1 = (13.22 ± 0.45)– (179.4 ± 4.9) kJ mol –1 (2.303RT) –1 and velocity coefficient at 623 K significantly larger than for the decarbonylation of ethyl oxoacetate, suggesting that chlorine substituent would have a greater tendency than hydrogen to migrate to the adjacent carbonyl, forming more rigid bonds transition state","PeriodicalId":21456,"journal":{"name":"Revista Tecnica De La Facultad De Ingenieria Universidad Del Zulia","volume":"4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89310511","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}
引用次数: 0
Oxidación parcial de metano en catalizadores de Pd soportados sobre CexZr1-xO2/SiO2: Efecto de los ciclos continuos de reacción Pd催化剂对CexZr1-xO2/SiO2的部分氧化:连续反应循环的影响
Revista Tecnica De La Facultad De Ingenieria Universidad Del Zulia Pub Date : 2020-09-01 DOI: 10.22209/rt.v43n3a07
Elisbeth Mary Rubio Fuenmayor, Jeannette Josefina Zárraga Colina, Alexander José Moronta Cuicas, Dora Finol, Jorge Luis Alvis Arrieta, Victor José Ferrer Villasmil
{"title":"Oxidación parcial de metano en catalizadores de Pd soportados sobre CexZr1-xO2/SiO2: Efecto de los ciclos continuos de reacción","authors":"Elisbeth Mary Rubio Fuenmayor, Jeannette Josefina Zárraga Colina, Alexander José Moronta Cuicas, Dora Finol, Jorge Luis Alvis Arrieta, Victor José Ferrer Villasmil","doi":"10.22209/rt.v43n3a07","DOIUrl":"https://doi.org/10.22209/rt.v43n3a07","url":null,"abstract":"","PeriodicalId":21456,"journal":{"name":"Revista Tecnica De La Facultad De Ingenieria Universidad Del Zulia","volume":"57 1","pages":"167-175"},"PeriodicalIF":0.0,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81282558","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}
引用次数: 0
Arreglo Inteligente de Concentración Solar FV para MPPT usando Tecnología FPGA 采用FPGA技术的MPPT智能光伏太阳能集中阵列
Revista Tecnica De La Facultad De Ingenieria Universidad Del Zulia Pub Date : 2020-09-01 DOI: 10.22209/rt.v43n3a02
C. Sandoval-Ruiz
{"title":"Arreglo Inteligente de Concentración Solar FV para MPPT usando Tecnología FPGA","authors":"C. Sandoval-Ruiz","doi":"10.22209/rt.v43n3a02","DOIUrl":"https://doi.org/10.22209/rt.v43n3a02","url":null,"abstract":"The present research includes the study of photovoltaic systems and current techniques for maximum power point tracking, in relation to irradiance and temperature, a flap of proposing a reconfigurable PV scheme, simplifying the number of actuator components in the arrangement solar monitoring and regenerative heat recovery circuits, applying neural control in the adaptation of the coefficients of efficiency of the stages of the system. The method consists of identifying the correspondence of the SFVs with the LFSR circuit architecture and the identification of adaptive coefficients, in order to generalize the optimization model on a parameterized ANN. The VHDL description of the architecture was made for its synthesis on FPGA technology, in order to efficiently deal with the computational complexity, parallel processing and technical-environmental feasibility of the design. The results present an alternative technique based on self-similar circuits, with stages of adaptive gain, storage and configurable feedback. This research leads to the concept of intelligent concentration systems, which provides a valuable model, which can be applied in the area of engineering, design and scientific research.","PeriodicalId":21456,"journal":{"name":"Revista Tecnica De La Facultad De Ingenieria Universidad Del Zulia","volume":"79 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81422299","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}
引用次数: 4
Desempeño de catalizadores de CuO/ZnO/Al2O3 sometidos a varios ciclos de reacción de desplazamiento del gas de agua CuO/ZnO/Al2O3催化剂在各种水气置换反应循环下的性能
Revista Tecnica De La Facultad De Ingenieria Universidad Del Zulia Pub Date : 2020-09-01 DOI: 10.22209/rt.v43n3a06
Angeli Mercedes Barroso Velásquez, María Victoria Markovich García, Jeannette Josefina Zárraga Colina, Alexander José Moronta Cuicas, Victor José Ferrer Villasmil
{"title":"Desempeño de catalizadores de CuO/ZnO/Al2O3 sometidos a varios ciclos de reacción de desplazamiento del gas de agua","authors":"Angeli Mercedes Barroso Velásquez, María Victoria Markovich García, Jeannette Josefina Zárraga Colina, Alexander José Moronta Cuicas, Victor José Ferrer Villasmil","doi":"10.22209/rt.v43n3a06","DOIUrl":"https://doi.org/10.22209/rt.v43n3a06","url":null,"abstract":"","PeriodicalId":21456,"journal":{"name":"Revista Tecnica De La Facultad De Ingenieria Universidad Del Zulia","volume":"13 1","pages":"159-166"},"PeriodicalIF":0.0,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87507450","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}
引用次数: 0
Realidad Aumentada Móvil: Una estrategia pedagógica en el ámbito universitario 移动增强现实:大学水平的教学策略
Revista Tecnica De La Facultad De Ingenieria Universidad Del Zulia Pub Date : 2020-09-01 DOI: 10.22209/rt.v43n3a04
Luis Alberto Laurens Arredondo
{"title":"Realidad Aumentada Móvil: Una estrategia pedagógica en el ámbito universitario","authors":"Luis Alberto Laurens Arredondo","doi":"10.22209/rt.v43n3a04","DOIUrl":"https://doi.org/10.22209/rt.v43n3a04","url":null,"abstract":"","PeriodicalId":21456,"journal":{"name":"Revista Tecnica De La Facultad De Ingenieria Universidad Del Zulia","volume":"110 1","pages":"142-149"},"PeriodicalIF":0.0,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79260546","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}
引用次数: 1
Diseño y construcción de un módulo de control analógico tipo adelanto-atraso como herramienta de aprendizaje en la teoría de control 作为控制理论学习工具的超时模拟控制模块的设计与构造
Revista Tecnica De La Facultad De Ingenieria Universidad Del Zulia Pub Date : 2020-09-01 DOI: 10.22209/rt.v43n3a05
Jormany Quintero-Rojas, C. Bermúdez, M. Coronel
{"title":"Diseño y construcción de un módulo de control analógico tipo adelanto-atraso como herramienta de aprendizaje en la teoría de control","authors":"Jormany Quintero-Rojas, C. Bermúdez, M. Coronel","doi":"10.22209/rt.v43n3a05","DOIUrl":"https://doi.org/10.22209/rt.v43n3a05","url":null,"abstract":"Lead-lag compensators are still used for the control of various real systems, therefore, they are an indispensable topic in the study of automatic process control. In the teaching of control theory, the need for didactic systems is evident to offer the possibility of experimenting with analog controllers, this way the theoretical knowledge is strengthened with practice. The object of this work is to describe the design and implementation of a control module based on lead-lag controllers as a physical tool in teaching the theoretical principles of automatic control. The control module was built with easy use and low cost elements in Venezuela. This module features four independent sub-modules: two controllers and two electrical systems to be controlled, which can be connected to each other. The results obtained with the control module slightly differ from the simulations. This designed module allows the user to develop analysis skills in control systems by single, friendly and safe interaction when varying controller parameters.","PeriodicalId":21456,"journal":{"name":"Revista Tecnica De La Facultad De Ingenieria Universidad Del Zulia","volume":"42 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80667683","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}
引用次数: 2
Influencia de las partículas de caucho en la resistencia a la compresión de bloques de concreto 橡胶颗粒对混凝土砌块抗压强度的影响
Revista Tecnica De La Facultad De Ingenieria Universidad Del Zulia Pub Date : 2020-09-01 DOI: 10.22209/rt.v43n3a03
Edison Javier Lara Guerrero, David Patricio Guerrero Cuasapaz, Byron Iván Altamirano León
{"title":"Influencia de las partículas de caucho en la resistencia a la compresión de bloques de concreto","authors":"Edison Javier Lara Guerrero, David Patricio Guerrero Cuasapaz, Byron Iván Altamirano León","doi":"10.22209/rt.v43n3a03","DOIUrl":"https://doi.org/10.22209/rt.v43n3a03","url":null,"abstract":"","PeriodicalId":21456,"journal":{"name":"Revista Tecnica De La Facultad De Ingenieria Universidad Del Zulia","volume":"25 1","pages":"134-141"},"PeriodicalIF":0.0,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88258203","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}
引用次数: 4
Una destacada expresión de un Profesional de la Ingeniería Química 化学工程专业人士的杰出表达
Revista Tecnica De La Facultad De Ingenieria Universidad Del Zulia Pub Date : 2020-09-01 DOI: 10.22209/rt.v43n3a00
R. Solano
{"title":"Una destacada expresión de un Profesional de la Ingeniería Química","authors":"R. Solano","doi":"10.22209/rt.v43n3a00","DOIUrl":"https://doi.org/10.22209/rt.v43n3a00","url":null,"abstract":"","PeriodicalId":21456,"journal":{"name":"Revista Tecnica De La Facultad De Ingenieria Universidad Del Zulia","volume":"22 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81485610","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}
引用次数: 0
Estimación del Factor C de la RUSLE en la microcuenca del rio Lodana, Ecuador, usando imágenes del satélite Sentinel 2 利用Sentinel 2号卫星图像估计厄瓜多尔洛达纳河微流域径流C因子
Revista Tecnica De La Facultad De Ingenieria Universidad Del Zulia Pub Date : 2020-08-01 DOI: 10.22209/rt.ve2020n2a10
Á. Vélez., H. A. Gil
{"title":"Estimación del Factor C de la RUSLE en la microcuenca del rio Lodana, Ecuador, usando imágenes del satélite Sentinel 2","authors":"Á. Vélez., H. A. Gil","doi":"10.22209/rt.ve2020n2a10","DOIUrl":"https://doi.org/10.22209/rt.ve2020n2a10","url":null,"abstract":"","PeriodicalId":21456,"journal":{"name":"Revista Tecnica De La Facultad De Ingenieria Universidad Del Zulia","volume":"80 1","pages":"69-75"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80029927","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}
引用次数: 1
Metabolitos Secundarios y actividad antioxidante del tomatillo silvestre (Solanum pimpinellifolium L.) 野生番茄的次生代谢产物及抗氧化活性
Revista Tecnica De La Facultad De Ingenieria Universidad Del Zulia Pub Date : 2020-08-01 DOI: 10.22209/rt.ve2020n2a04
Denisse María Rivas Navia, A. Rivadeneira, Joan Manuel Rodríguez Díaz
{"title":"Metabolitos Secundarios y actividad antioxidante del tomatillo silvestre (Solanum pimpinellifolium L.)","authors":"Denisse María Rivas Navia, A. Rivadeneira, Joan Manuel Rodríguez Díaz","doi":"10.22209/rt.ve2020n2a04","DOIUrl":"https://doi.org/10.22209/rt.ve2020n2a04","url":null,"abstract":"","PeriodicalId":21456,"journal":{"name":"Revista Tecnica De La Facultad De Ingenieria Universidad Del Zulia","volume":"97 1","pages":"26-32"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87106865","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}
引用次数: 1
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