The teaching of the English language is one of the fundamental pillars in the educational formation of students in today's world. The practice of the language contributes to the development of communication and expression skills, in addition to promoting interculturality and access to entertainment and study media. However, Brazilian schools predominantly employ the traditional teaching method, which relies on learning through grammatical rules and literal translations. This method is monotonous and repetitive, having as a consequence the demotivation of students with the discipline. Therefore, the application of technologies in education, such as virtual reality, increases students' interest in learning through interactive activities that encourage creativity and fun, improving the quality of education, absorption of content and their cognitive skills. This work presents a virtual reality tool that offers interactive three-dimensional virtual environments with the aim of assisting in the teaching and learning of English language for Brazilian elementary school students. The virtual environments were evaluated by the project researchers through a specific usability questionnaire for this type of environment, obtaining a final average of 4.53 out of 5.0, being considered suitable for future use in classrooms.
{"title":"ENGLISHVR: USO DE REALIDADE VIRTUAL NO ENSINO DA LÍNGUA INGLESA NAS ESCOLAS DE ENSINO FUNDAMENTAL ESTADUAL BRASILEIRO","authors":"Marina Zeni Oliveira Marques Calderan, Cintia Camargo Furquim, Robson Augusto Siscoutto","doi":"10.5747/ce.2024.v16.e420","DOIUrl":"https://doi.org/10.5747/ce.2024.v16.e420","url":null,"abstract":"The teaching of the English language is one of the fundamental pillars in the educational formation of students in today's world. The practice of the language contributes to the development of communication and expression skills, in addition to promoting interculturality and access to entertainment and study media. However, Brazilian schools predominantly employ the traditional teaching method, which relies on learning through grammatical rules and literal translations. This method is monotonous and repetitive, having as a consequence the demotivation of students with the discipline. Therefore, the application of technologies in education, such as virtual reality, increases students' interest in learning through interactive activities that encourage creativity and fun, improving the quality of education, absorption of content and their cognitive skills. This work presents a virtual reality tool that offers interactive three-dimensional virtual environments with the aim of assisting in the teaching and learning of English language for Brazilian elementary school students. The virtual environments were evaluated by the project researchers through a specific usability questionnaire for this type of environment, obtaining a final average of 4.53 out of 5.0, being considered suitable for future use in classrooms.","PeriodicalId":30414,"journal":{"name":"Colloquium Exactarum","volume":" 8","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141001177","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 : 2024-05-08DOI: 10.5747/ce.2024.v16.e419
Raphael Soares Erbes, Daniele Araujo Altran, G. Olazar, Andreza F. P. da Silva
Trip Generating Developments (TGDs) have an influence on traffic in their location and are directly linked to the lack of control in the mobility of vehicles and pedestrians in the location, if their implementation is not properly planned. The objective of this work was to study traffic and conditions around Hospital da Vida (HV), located in the center Dourados-MS, as a Hospital PGV and propose safe mobility to the location. The study was developed with a bibliographical analysis of the topic, data relating to accidents and mobility in the region with local authorities, vehicle and pedestrian counts and on-site visits were also carried out. According to the data obtained, it was shown that HV has a high complexity/cost service, serving 33 municipalities in the region. According to data from counts carried out at the intersection of Toshinobu Katayama Street and Ciro Melo Street in Dourados-MS, a high flow of vehicles was noted, represented mainly by cars, as well as a high flow of pedestrians. In 500 meter radius studied had noticed the highest rate of accidents at the site in 2023, since 2020. Therefore, it was possible to note that the existing signs do not include safe mobility in the study site, with solutions being proposed using tactical urbanism and reinforcement of horizontal and vertical signs, with the aim of increasing safety and helping pedestrians stay and coexist.
{"title":"ESTUDO DE TRÁFEGO DE VEÍCULOS, INTERVENÇÕES DE SINALIZAÇÕES E URBANISMO TÁTICO NO ENTORNO DO HOSPITAL DA VIDA COMO POLO GERADOR DE VIAGENS","authors":"Raphael Soares Erbes, Daniele Araujo Altran, G. Olazar, Andreza F. P. da Silva","doi":"10.5747/ce.2024.v16.e419","DOIUrl":"https://doi.org/10.5747/ce.2024.v16.e419","url":null,"abstract":"Trip Generating Developments (TGDs) have an influence on traffic in their location and are directly linked to the lack of control in the mobility of vehicles and pedestrians in the location, if their implementation is not properly planned. The objective of this work was to study traffic and conditions around Hospital da Vida (HV), located in the center Dourados-MS, as a Hospital PGV and propose safe mobility to the location. The study was developed with a bibliographical analysis of the topic, data relating to accidents and mobility in the region with local authorities, vehicle and pedestrian counts and on-site visits were also carried out. According to the data obtained, it was shown that HV has a high complexity/cost service, serving 33 municipalities in the region. According to data from counts carried out at the intersection of Toshinobu Katayama Street and Ciro Melo Street in Dourados-MS, a high flow of vehicles was noted, represented mainly by cars, as well as a high flow of pedestrians. In 500 meter radius studied had noticed the highest rate of accidents at the site in 2023, since 2020. Therefore, it was possible to note that the existing signs do not include safe mobility in the study site, with solutions being proposed using tactical urbanism and reinforcement of horizontal and vertical signs, with the aim of increasing safety and helping pedestrians stay and coexist.","PeriodicalId":30414,"journal":{"name":"Colloquium Exactarum","volume":" 11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140998525","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 : 2024-03-18DOI: 10.5747/ce.2024.v16.e417
Igor dos Santos Santana, César Alberto Bravo Pariente
The objective of this project was to develop a semantic model of arithmetic and logical operations for virtual hardware; this goal was achieved through three main steps: Implement logic gates and arithmetic and logic units in Nand2tetris virtual hardware simulator software; Implement recursive and iterative functions to check the correct functioning of logical and arithmetic operations in the p-code machine virtual machine. In the first stage, implementations of the elementary logic gates were developed in the hardware simulator software Nand2tetris. From these logic gates, combinational circuits and sequential circuits were built as logical and arithmetic unit, Half Adder, Full Adder, 16-bit Addition, 16-bit logical negation, 16-bit logical AND, 16-bit logical OR, among others. The second stage involved experimenting at a high level with arithmetic and logical operations, provided by the virtual machine p-code machine, which was implemented in the C programming language, as addition, subtraction, greater than, less than. In the third stage, having already implemented logical and arithmetic operations, iterative and recursive programs were developed to calculate the nth value of the Fibonacci Sequence and the factorial of any number n.
该项目的目标是为虚拟硬件开发算术和逻辑运算语义模型；这一目标通过三个主要步骤实现：在 Nand2tetris 虚拟硬件模拟器软件中实现逻辑门、算术和逻辑单元；在 p 代码机虚拟机中实现递归和迭代功能，以检查逻辑和算术运算的正确运行。在第一阶段，在硬件模拟器软件 Nand2tetris 中开发了基本逻辑门的实现。根据这些逻辑门，建立了逻辑和算术单元、半加法器、全加法器、16 位加法、16 位逻辑否定、16 位逻辑 AND、16 位逻辑 OR 等组合电路和顺序电路。第二阶段是对算术和逻辑运算进行高水平的实验，由虚拟机 p-code machine 提供，用 C 编程语言实现加法、减法、大于、小于等运算。在第三阶段，在实现了逻辑和算术运算后，开发了迭代和递归程序，以计算斐波那契数列的 n 次方值和任意数字 n 的阶乘。
{"title":"MODELO SEMÂNTICO DE OPERAÇÕES ARITMÉTICAS E LÓGICAS PARA HARDWARE VIRTUAL","authors":"Igor dos Santos Santana, César Alberto Bravo Pariente","doi":"10.5747/ce.2024.v16.e417","DOIUrl":"https://doi.org/10.5747/ce.2024.v16.e417","url":null,"abstract":"The objective of this project was to develop a semantic model of arithmetic and logical operations for virtual hardware; this goal was achieved through three main steps: Implement logic gates and arithmetic and logic units in Nand2tetris virtual hardware simulator software; Implement recursive and iterative functions to check the correct functioning of logical and arithmetic operations in the p-code machine virtual machine. In the first stage, implementations of the elementary logic gates were developed in the hardware simulator software Nand2tetris. From these logic gates, combinational circuits and sequential circuits were built as logical and arithmetic unit, Half Adder, Full Adder, 16-bit Addition, 16-bit logical negation, 16-bit logical AND, 16-bit logical OR, among others. The second stage involved experimenting at a high level with arithmetic and logical operations, provided by the virtual machine p-code machine, which was implemented in the C programming language, as addition, subtraction, greater than, less than. In the third stage, having already implemented logical and arithmetic operations, iterative and recursive programs were developed to calculate the nth value of the Fibonacci Sequence and the factorial of any number n.","PeriodicalId":30414,"journal":{"name":"Colloquium Exactarum","volume":"43 16","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140231503","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 : 2024-03-18DOI: 10.5747/ce.2024.v16.e416
Jéssica Girello Motta Viana, Geilson A. da Silva, Hygor Rodrigues de Oliveira
In this study we analyzed the concentration of the metals Cd, Cu, Pb, Fe and Ni in the muscle tissue and digestive tract of 13 species of fish from the Taquari River, collected in the northern region of the state of Mato Grosso do Sul, in the Coxim micro-region, in order to quantify and compare the concentrations of these analytes present in these fish with the regulations for inorganic contaminants in Brazil (MERCOSUR) and abroad (FAO/WHO), thus making it possible to indicate whether they are within acceptable standards. The analyses were carried out using the Flame Atomic Absorption Spectrometry method and the results obtained indicate that Cd and Pb were not detected in all species. For Fe, Cu and Ni, no limits stipulated by legislation were found. Finally, the analysis showed that there are no factors of contamination by potentially contaminating metals through the consumption of fish by the population.
在这项研究中，我们分析了在南马托格罗索州（Mato Grosso do Sul）北部地区科西姆（Coxim）微型区域塔夸里河（Taquari River）中采集的 13 种鱼类的肌肉组织和消化道中的金属镉、铜、铅、铁和镍的浓度，以便量化这些鱼类体内存在的这些分析物的浓度，并将其与巴西（南方共同市场）和国外（粮农组织/世卫组织）的无机污染物规定进行比较，从而确定这些浓度是否在可接受的标准范围内。分析采用火焰原子吸收光谱法进行，结果表明，在所有鱼种中均未检测到镉和铅。至于铁、铜和镍，则没有发现法律规定的限值。最后，分析表明，居民食用鱼类不存在潜在污染金属的污染因素。
{"title":"ANÁLISE DE METAIS POTENCIALMENTE CONTAMINANTES NOS PEIXES DO RIO TAQUARI, BACIA DO RIO PARAGUAI, MUNICÍPIO DE COXIM-MS","authors":"Jéssica Girello Motta Viana, Geilson A. da Silva, Hygor Rodrigues de Oliveira","doi":"10.5747/ce.2024.v16.e416","DOIUrl":"https://doi.org/10.5747/ce.2024.v16.e416","url":null,"abstract":"In this study we analyzed the concentration of the metals Cd, Cu, Pb, Fe and Ni in the muscle tissue and digestive tract of 13 species of fish from the Taquari River, collected in the northern region of the state of Mato Grosso do Sul, in the Coxim micro-region, in order to quantify and compare the concentrations of these analytes present in these fish with the regulations for inorganic contaminants in Brazil (MERCOSUR) and abroad (FAO/WHO), thus making it possible to indicate whether they are within acceptable standards. The analyses were carried out using the Flame Atomic Absorption Spectrometry method and the results obtained indicate that Cd and Pb were not detected in all species. For Fe, Cu and Ni, no limits stipulated by legislation were found. Finally, the analysis showed that there are no factors of contamination by potentially contaminating metals through the consumption of fish by the population.","PeriodicalId":30414,"journal":{"name":"Colloquium Exactarum","volume":"46 9","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140231472","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 : 2024-03-18DOI: 10.5747/ce.2024.v16.e418
Rafael J. Chirolli, Francis Lopes Pacagnelli, Ana Paula Coelho Figueira Freire, Robson Augusto Siscoutto
Cardiovascular diseases (CVD) are the main causes of death in the world and many people who have CVD survive, making intervention measures necessary that are effective in their cardiovascular rehabilitation (CVR). This article presents the PHYSIOVR computational tool, which uses Virtual Reality (VR), to assist in the treatment of heart disease patients during physical activities, using customized 3D virtual environments, aiming to improve functional capacity and cognitive engagement. The tool was evaluated through a usability questionnaire, obtaining a final average of 4.6 out of 5.0 points, and then it was evaluated by physical therapists, obtaining an overall satisfaction level of 9.1 ± 0.73.
{"title":"PHYSIOVR: FERRAMENTA DE REALIDADE VIRTUAL APLICADO NA REABILITAÇÃO CARDIOVASCULAR","authors":"Rafael J. Chirolli, Francis Lopes Pacagnelli, Ana Paula Coelho Figueira Freire, Robson Augusto Siscoutto","doi":"10.5747/ce.2024.v16.e418","DOIUrl":"https://doi.org/10.5747/ce.2024.v16.e418","url":null,"abstract":"Cardiovascular diseases (CVD) are the main causes of death in the world and many people who have CVD survive, making intervention measures necessary that are effective in their cardiovascular rehabilitation (CVR). This article presents the PHYSIOVR computational tool, which uses Virtual Reality (VR), to assist in the treatment of heart disease patients during physical activities, using customized 3D virtual environments, aiming to improve functional capacity and cognitive engagement. The tool was evaluated through a usability questionnaire, obtaining a final average of 4.6 out of 5.0 points, and then it was evaluated by physical therapists, obtaining an overall satisfaction level of 9.1 ± 0.73.","PeriodicalId":30414,"journal":{"name":"Colloquium Exactarum","volume":"77 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140232391","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 : 2023-12-05DOI: 10.5747/ce.2023.v15.e406
Danielly Pereira Sales, J. G. M. S. Decanini, Leonardo Carniato, F. Pereira
This paper seeks to evaluate the impacts arising from the insertion of distributed generation (DG) in electrical power distribution systems. In this circumstance, using the OpenDSS computational tool, simulations of four different scenarios were carried out, varying the DG penetration levels as a function of the total feeder load, considering a specific point of operation. Finally, the same feeder was simulated with photovoltaic generating sources distributed in bars next to the loads, in order to analyze the temporal characteristic of solar generation as a function of demand. Through the simulations, it was possible to analyze, interpret and highlight the impacts that the insertion of DG produces in the electrical power distribution systems. It was evident that the increase in DG penetration led to an improvement in the feeder voltage profile, power flow inversion and reduction of electrical losses in the feeder. It should be noted that the insertion of DG from renewable sources is a Brazilian reality and a path to be followed, since the diversification of the energy matrix in line with the use of new technologies, such as smart grids, will provide electrical power systems with greater safety, operational efficiency and quality in the product delivered to consumers.
{"title":"AVALIAÇÃO DA INFLUÊNCIA DA INSERÇÃO DA GERAÇÃO DISTRIBUÍDA EM SISTEMAS DE DISTRIBUIÇÃO DE ENERGIA ELÉTRICA","authors":"Danielly Pereira Sales, J. G. M. S. Decanini, Leonardo Carniato, F. Pereira","doi":"10.5747/ce.2023.v15.e406","DOIUrl":"https://doi.org/10.5747/ce.2023.v15.e406","url":null,"abstract":"This paper seeks to evaluate the impacts arising from the insertion of distributed generation (DG) in electrical power distribution systems. In this circumstance, using the OpenDSS computational tool, simulations of four different scenarios were carried out, varying the DG penetration levels as a function of the total feeder load, considering a specific point of operation. Finally, the same feeder was simulated with photovoltaic generating sources distributed in bars next to the loads, in order to analyze the temporal characteristic of solar generation as a function of demand. Through the simulations, it was possible to analyze, interpret and highlight the impacts that the insertion of DG produces in the electrical power distribution systems. It was evident that the increase in DG penetration led to an improvement in the feeder voltage profile, power flow inversion and reduction of electrical losses in the feeder. It should be noted that the insertion of DG from renewable sources is a Brazilian reality and a path to be followed, since the diversification of the energy matrix in line with the use of new technologies, such as smart grids, will provide electrical power systems with greater safety, operational efficiency and quality in the product delivered to consumers.","PeriodicalId":30414,"journal":{"name":"Colloquium Exactarum","volume":"15 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138601482","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 : 2023-12-05DOI: 10.5747/ce.2023.v15.e405
Gustavo Garcia de Campos, Francisco Assis da Silva, Leandro Luiz de Almeida, A. O. Artero, Ricardo Luís Barbosa, A. Hiraga
Trees are indispensable to human life, they absorb carbon dioxide and release oxygen, protect ecosystems, reduce erosion and help to reduce the environment temperature. The manual identification of trees on public roads requires expense and time for recording and managing the data collected, since urban regions can be very large. We developed in this paper a method for the trees detection in urban areas from a 360 video. A YOLO neural network was trained to detect the trees from frames of the equirectangular video (360 images). We used Computer Vision techniques with the OpenCV library to develop algorithms to segment the regions that fit the detected trees in the rectilinear field of view (gnomonic projection), in order to verify if the trees are on the sidewalks. The results obtained showed around 80% success in detecting trees using YOLO, and an accuracy of 71% in the algorithm that checks if the trees are on the sidewalk.
{"title":"ALGORITMO PARA A DETECÇÃO DE ÁRVORES URBANAS A PARTIR DE IMAGENS 360","authors":"Gustavo Garcia de Campos, Francisco Assis da Silva, Leandro Luiz de Almeida, A. O. Artero, Ricardo Luís Barbosa, A. Hiraga","doi":"10.5747/ce.2023.v15.e405","DOIUrl":"https://doi.org/10.5747/ce.2023.v15.e405","url":null,"abstract":"Trees are indispensable to human life, they absorb carbon dioxide and release oxygen, protect ecosystems, reduce erosion and help to reduce the environment temperature. The manual identification of trees on public roads requires expense and time for recording and managing the data collected, since urban regions can be very large. We developed in this paper a method for the trees detection in urban areas from a 360 video. A YOLO neural network was trained to detect the trees from frames of the equirectangular video (360 images). We used Computer Vision techniques with the OpenCV library to develop algorithms to segment the regions that fit the detected trees in the rectilinear field of view (gnomonic projection), in order to verify if the trees are on the sidewalks. The results obtained showed around 80% success in detecting trees using YOLO, and an accuracy of 71% in the algorithm that checks if the trees are on the sidewalk.","PeriodicalId":30414,"journal":{"name":"Colloquium Exactarum","volume":"16 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138601289","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 : 2023-11-30DOI: 10.5747/ce.2023.v15.e404
Danrley Cristian Monteiro dos Santos, Daniele Araujo Altran
Urban mobility characterizes the conditions for moving people and loads through urban space, acting on the well-being and safety of the population. Considering the safety aspect, Vision Zero emerges as a set of techniques that help reduce accidents with deaths or serious injuries. This work presents the application of concepts of safe mobility and Vision Zero in the city of Dourados-MS through an intervention project in a stretch of one of its roads. The elaboration of the project required two main stages: determination of the study section and characterization of the traffic elements of that section. From the implementation of the bike path on Avenue Presidente Vargas, the safety of cyclists will increase. In addition, the correction of signs and the solution of problems related to accessibility when crossing the medians will result in greater safety for people with reduced mobility. Thus, it was found that the parameters of Vision Zero are strong allies to ensure the safety of pedestrians and cyclists and prevent serious accidents from occurring in the city.
{"title":"MOBILIDADE SEGURA: PROJETO DE INTERVENÇÃO VIÁRIA PARA UMA INTERSEÇÃO DA AVENIDA PRESIDENTE VARGAS DO MUNICÍPIO DE DOURADOS-MS","authors":"Danrley Cristian Monteiro dos Santos, Daniele Araujo Altran","doi":"10.5747/ce.2023.v15.e404","DOIUrl":"https://doi.org/10.5747/ce.2023.v15.e404","url":null,"abstract":"Urban mobility characterizes the conditions for moving people and loads through urban space, acting on the well-being and safety of the population. Considering the safety aspect, Vision Zero emerges as a set of techniques that help reduce accidents with deaths or serious injuries. This work presents the application of concepts of safe mobility and Vision Zero in the city of Dourados-MS through an intervention project in a stretch of one of its roads. The elaboration of the project required two main stages: determination of the study section and characterization of the traffic elements of that section. From the implementation of the bike path on Avenue Presidente Vargas, the safety of cyclists will increase. In addition, the correction of signs and the solution of problems related to accessibility when crossing the medians will result in greater safety for people with reduced mobility. Thus, it was found that the parameters of Vision Zero are strong allies to ensure the safety of pedestrians and cyclists and prevent serious accidents from occurring in the city.","PeriodicalId":30414,"journal":{"name":"Colloquium Exactarum","volume":"10 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139198261","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 : 2023-11-14DOI: 10.5747/ce.2023.v15.e402
Gabrielly Lorraynny Martins de Oliveira, Gustavo Braga, Wilker Caetano, Katieli da Silva Souza Campanholi
Photodynamic therapy (PDT) is a treatment modality already used in several countries to treat invasive and topical diseases. In these treatments, the combination of a photoactive drug (PS), visible light, and molecular oxygen results in the formation of singlet oxygen, a type of highly reactive/cytotoxic oxygen species. Phthalocyanines incorporated into solubilization/monomerization systems are photosensitizing substances used in PDT, even given their high hydrophobicity. Its inhibitory capacity against microorganisms and its photodynamic action against various cancer cell lines have made it the protagonist of several scientific articles. This review article provides a brief overview of the concept of PDT and its potential use in the treatment of diseases - an emerging treatment modality in Brazil.
{"title":"REVISÃO DO FOTOSSENSIBILIZADOR FTALOCIANINA UTILIZADA NA TERAPIA FOTODINÂMICA E SUA APLICABILIDADE FRENTE AO TRATAMENTO DE DIVERSOS AGENTES PATOGÊNICOS","authors":"Gabrielly Lorraynny Martins de Oliveira, Gustavo Braga, Wilker Caetano, Katieli da Silva Souza Campanholi","doi":"10.5747/ce.2023.v15.e402","DOIUrl":"https://doi.org/10.5747/ce.2023.v15.e402","url":null,"abstract":"Photodynamic therapy (PDT) is a treatment modality already used in several countries to treat invasive and topical diseases. In these treatments, the combination of a photoactive drug (PS), visible light, and molecular oxygen results in the formation of singlet oxygen, a type of highly reactive/cytotoxic oxygen species. Phthalocyanines incorporated into solubilization/monomerization systems are photosensitizing substances used in PDT, even given their high hydrophobicity. Its inhibitory capacity against microorganisms and its photodynamic action against various cancer cell lines have made it the protagonist of several scientific articles. This review article provides a brief overview of the concept of PDT and its potential use in the treatment of diseases - an emerging treatment modality in Brazil.","PeriodicalId":30414,"journal":{"name":"Colloquium Exactarum","volume":"1 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134992047","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 : 2023-11-14DOI: 10.5747/ce.2023.v15.e403
Frederico Artoni Leal Diogo, Wanderson Fernando Maia
The present work brings a numerical, non-linear physical and geometric analysis using the Finite Element Method, of cold-formed steel channel with complex edge stiffeners, using the Ansys software. The simulations employed different magnitudes of initial imperfections and seeking to find the critical buckling loads and failure modes, observing local, distortional buckling and the interaction between both. The results obtained were compared with experimental tests, performed by Young e Yan (2002) and with the values proposed by the brazilian standard ABNT NBR 14762:2010, using the Direct Strength Method. The numerical analysis proved to be quite efficient, producing interesting results compared to the experimental ones, showing the reliability of this adopted method. The initial imperfections adopted showed that, for the same section, it was not the same magnitude that produced the best results, emphasizing the importance of your choice. The procedure of ABNT NBR 14762:2010 proved to be conservative for sections in which local buckling predominated and against security for sections in which the distortional buckling predominated.
本文利用Ansys软件对冷弯型钢复杂边缘加筋通道进行了数值、非线性物理和几何分析。模拟采用不同大小的初始缺陷，寻找临界屈曲载荷和破坏模式，观察局部屈曲、畸变屈曲以及两者之间的相互作用。使用直接强度法，将所得结果与Young e Yan(2002)进行的实验测试以及巴西标准ABNT NBR 14762:2010提出的值进行了比较。与实验结果相比，数值分析证明是非常有效的，得出了有趣的结果，表明所采用方法的可靠性。最初采用的缺陷表明，对于同一部分，产生最佳结果的大小不同，强调了您选择的重要性。ABNT NBR 14762:2010证明了程序对于局部屈曲为主的截面是保守的，对于扭曲屈曲为主的截面是不安全的。
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