Pub Date : 2019-11-01DOI: 10.1109/icasat48251.2019.9069523
{"title":"iCASAT 2019 Table of Contents","authors":"","doi":"10.1109/icasat48251.2019.9069523","DOIUrl":"https://doi.org/10.1109/icasat48251.2019.9069523","url":null,"abstract":"","PeriodicalId":178628,"journal":{"name":"2019 IEEE International Conference on Applied Science and Advanced Technology (iCASAT)","volume":"119 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122604128","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 : 2019-11-01DOI: 10.1109/iCASAT48251.2019.9069517
José Armando Olvera Balderas, Julio César Sosa Savedra, R. González, José Dolores Óscar Barceinas Sánchez, A. L. García García, Víctor Hugo García Ortega
In order to calculate and measure wear in a knee simulator, it is necessary to acquire the axial and tangential force in the femoral and tibial component. For this, a board was designed to acquire the signal of two load cells. This can measure up to 8000 N in axial force and 900 N in tangential force. Due to the nature of the axial force, signals were added to establish a force limit and avoid mechanical damage to the knee simulator. The board was designed with high precision instrumentation amplifiers used in medical instrumentation and automation applications. In this work, only the electronic design is presented. A design of a compact printed circuit board for conditioning two load cells and get another signals was raised and the card tests will be presented in future works.
{"title":"Design of a conditioner board for measuring axial and tangential force in a knee simulator","authors":"José Armando Olvera Balderas, Julio César Sosa Savedra, R. González, José Dolores Óscar Barceinas Sánchez, A. L. García García, Víctor Hugo García Ortega","doi":"10.1109/iCASAT48251.2019.9069517","DOIUrl":"https://doi.org/10.1109/iCASAT48251.2019.9069517","url":null,"abstract":"In order to calculate and measure wear in a knee simulator, it is necessary to acquire the axial and tangential force in the femoral and tibial component. For this, a board was designed to acquire the signal of two load cells. This can measure up to 8000 N in axial force and 900 N in tangential force. Due to the nature of the axial force, signals were added to establish a force limit and avoid mechanical damage to the knee simulator. The board was designed with high precision instrumentation amplifiers used in medical instrumentation and automation applications. In this work, only the electronic design is presented. A design of a compact printed circuit board for conditioning two load cells and get another signals was raised and the card tests will be presented in future works.","PeriodicalId":178628,"journal":{"name":"2019 IEEE International Conference on Applied Science and Advanced Technology (iCASAT)","volume":"475 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127557765","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 : 2019-11-01DOI: 10.1109/iCASAT48251.2019.9069520
Giovani. L. Hernádez P., Mario E. Duarte G., R. Palazzo
Several works have proposed the use of cyclic codes, to identify DNA and mRNA sequences as codewords of BCH codes for explaining the ability of cells to preserve genetic information by tolerating errors that can affect the process of DNA transcription. In this way, BCH codes over the ringℤ4 have been used to identify these sequences. The current processes, used to carry out the identification, shows restrictions with respect to the size of the sequence. Therefore, in this work, it is proposed an algorithm that allows identifying odd-length biological sequences as codewords of BCH codes over ℤ4. As results, a total of 318 sequences of nine different sizes, which had not been previously considered by the previous algorithms, were identified as codewords of 64 BCH codes.
{"title":"Identification of odd-sized DNA and mRNA sequences as codewords of BCH codes over ℤ4","authors":"Giovani. L. Hernádez P., Mario E. Duarte G., R. Palazzo","doi":"10.1109/iCASAT48251.2019.9069520","DOIUrl":"https://doi.org/10.1109/iCASAT48251.2019.9069520","url":null,"abstract":"Several works have proposed the use of cyclic codes, to identify DNA and mRNA sequences as codewords of BCH codes for explaining the ability of cells to preserve genetic information by tolerating errors that can affect the process of DNA transcription. In this way, BCH codes over the ringℤ4 have been used to identify these sequences. The current processes, used to carry out the identification, shows restrictions with respect to the size of the sequence. Therefore, in this work, it is proposed an algorithm that allows identifying odd-length biological sequences as codewords of BCH codes over ℤ4. As results, a total of 318 sequences of nine different sizes, which had not been previously considered by the previous algorithms, were identified as codewords of 64 BCH codes.","PeriodicalId":178628,"journal":{"name":"2019 IEEE International Conference on Applied Science and Advanced Technology (iCASAT)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133428600","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 : 2019-11-01DOI: 10.1109/iCASAT48251.2019.9069538
Fernando Gutiérrez Pórtela, Florina Almenares Mendoza, Liliana Benavides
machine learning techniques are widely used in the research for intelligent solutions anomalies detection on different computers and communications systems, which have allowed to modernize the intrusion detection systems, to ensure data privacy. For that, this paper evaluates the performance of some supervised (i.e., KNN and SVM) and unsupervised (i.e., Isolation Forest and K-Means) algorithms, for intrusion detection, using data set UNSW-NB12. The results show that the supervised algorithm SVM gaussiana fine, obtained 92% in accuracy, indicating the ability to correctly classify normal and abnormal data. With regard to the unsupervised algorithms, the K-Means algorithm groups the data together correctly and allows the appropriate number of groups to be clearly defined; however, this data set is highly agglomerated. For Isolation Forest, despite being a robust algorithm for the separation of atypical values, it presented difficulty for it. Finally, it should be made clear that not all methods of detecting anomalies by distance work properly for all data sets.
{"title":"Evaluation of the performance of supervised and unsupervised Machine learning techniques for intrusion detection","authors":"Fernando Gutiérrez Pórtela, Florina Almenares Mendoza, Liliana Benavides","doi":"10.1109/iCASAT48251.2019.9069538","DOIUrl":"https://doi.org/10.1109/iCASAT48251.2019.9069538","url":null,"abstract":"machine learning techniques are widely used in the research for intelligent solutions anomalies detection on different computers and communications systems, which have allowed to modernize the intrusion detection systems, to ensure data privacy. For that, this paper evaluates the performance of some supervised (i.e., KNN and SVM) and unsupervised (i.e., Isolation Forest and K-Means) algorithms, for intrusion detection, using data set UNSW-NB12. The results show that the supervised algorithm SVM gaussiana fine, obtained 92% in accuracy, indicating the ability to correctly classify normal and abnormal data. With regard to the unsupervised algorithms, the K-Means algorithm groups the data together correctly and allows the appropriate number of groups to be clearly defined; however, this data set is highly agglomerated. For Isolation Forest, despite being a robust algorithm for the separation of atypical values, it presented difficulty for it. Finally, it should be made clear that not all methods of detecting anomalies by distance work properly for all data sets.","PeriodicalId":178628,"journal":{"name":"2019 IEEE International Conference on Applied Science and Advanced Technology (iCASAT)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128970457","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 : 2019-11-01DOI: 10.1109/iCASAT48251.2019.9069531
J. R. Romero Navarrete, F. Otremba, A. L. Lozano Guzmán
Avoiding road crashes has been the purpose behind many specialized software and hardware systems, involving both active and passive safety principles. Global Positioning technologies were incorporated into the transportation systems with the main purpose of acquiring the position of the vehicle under a continuous basis, for security and economy purposes. However, the GPS data can also be used for assessing the level of safety at which the vehicle is driven. On the basis of the essential data available from commercial GPS devices, in this paper we propose a combined performance measurement to assess the road safety level at which the vehicle is being driven. Such performance measure uses GPS data of the vehicle displacement, including the speed and the acceleration, as well as the course (latitude and longitude coordinates), in an integral driving assessment formulation that can run in real time. Results from the experimental use of this formulation suggest that the level of safety in the driving is time dependent, and that there are risky situations when different factors converge.
{"title":"A real-time GPS scheme to assess safe driving skills","authors":"J. R. Romero Navarrete, F. Otremba, A. L. Lozano Guzmán","doi":"10.1109/iCASAT48251.2019.9069531","DOIUrl":"https://doi.org/10.1109/iCASAT48251.2019.9069531","url":null,"abstract":"Avoiding road crashes has been the purpose behind many specialized software and hardware systems, involving both active and passive safety principles. Global Positioning technologies were incorporated into the transportation systems with the main purpose of acquiring the position of the vehicle under a continuous basis, for security and economy purposes. However, the GPS data can also be used for assessing the level of safety at which the vehicle is driven. On the basis of the essential data available from commercial GPS devices, in this paper we propose a combined performance measurement to assess the road safety level at which the vehicle is being driven. Such performance measure uses GPS data of the vehicle displacement, including the speed and the acceleration, as well as the course (latitude and longitude coordinates), in an integral driving assessment formulation that can run in real time. Results from the experimental use of this formulation suggest that the level of safety in the driving is time dependent, and that there are risky situations when different factors converge.","PeriodicalId":178628,"journal":{"name":"2019 IEEE International Conference on Applied Science and Advanced Technology (iCASAT)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122547017","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 : 2019-11-01DOI: 10.1109/iCASAT48251.2019.9069533
Hernández-Salazar Jorge A., Hernández-Rodríguez David, H. a, Ramos-Fernández Julio C., M. A., Trejo-Macotela Francisco R.
In this work it is showed fuzzy model, trained with ANFIS algorithm, to estimate water evapotranspiration (ET) of a tomato plant, as a witness in the production in a greenhouse. There are two variables used, the VPD that represents the microclimate of the greenhouse and the mass of the plant, that was measured with a digital balance (lysimeter). Additionally, a second lysimeter was used to prove the result of the structure of the fuzzy model, by means of mass balance principle, it was proved the effectiveness of the model that it is proposed. The experimental results here presented are from two days, the pot with the tomato plant was saturated with water and no irrigation cycles were performed. The approximate model error was 20.3239 (g) of a total 453.3239 (g), that represents approximately 4.48 %. The experimental results indicate that the modeling proposal shown here, reduces the number of variables that it is actually suggest by the organization of the united nations for the agriculture and food (FAO), ET fuzzy model proposed can success in the economy for its implementation in protected agriculture.
{"title":"Estimation of the Evapotranspiration using ANFIS algorithm for Agricultural Production in Greenhouse","authors":"Hernández-Salazar Jorge A., Hernández-Rodríguez David, H. a, Ramos-Fernández Julio C., M. A., Trejo-Macotela Francisco R.","doi":"10.1109/iCASAT48251.2019.9069533","DOIUrl":"https://doi.org/10.1109/iCASAT48251.2019.9069533","url":null,"abstract":"In this work it is showed fuzzy model, trained with ANFIS algorithm, to estimate water evapotranspiration (ET) of a tomato plant, as a witness in the production in a greenhouse. There are two variables used, the VPD that represents the microclimate of the greenhouse and the mass of the plant, that was measured with a digital balance (lysimeter). Additionally, a second lysimeter was used to prove the result of the structure of the fuzzy model, by means of mass balance principle, it was proved the effectiveness of the model that it is proposed. The experimental results here presented are from two days, the pot with the tomato plant was saturated with water and no irrigation cycles were performed. The approximate model error was 20.3239 (g) of a total 453.3239 (g), that represents approximately 4.48 %. The experimental results indicate that the modeling proposal shown here, reduces the number of variables that it is actually suggest by the organization of the united nations for the agriculture and food (FAO), ET fuzzy model proposed can success in the economy for its implementation in protected agriculture.","PeriodicalId":178628,"journal":{"name":"2019 IEEE International Conference on Applied Science and Advanced Technology (iCASAT)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124771996","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 : 2019-11-01DOI: 10.1109/iCASAT48251.2019.9069522
Rojas Velasco I. Ivette, Juárez López Guilermo, Velázquez Cruz E. Isac, Yescas Mendoza Edgardo, Martínez Martínez Rafael, Falcony Guajardo Ciro
This research consisted of obtaining photoluminescent films of ZrO2:Tb3+ as a product of the synthesis of Zr(C5H7O2)4, which were deposited using the Ultrasonic Spray Pyrolitic (UPS) technique on Corning 7059 glass substrates. In a methanol (CH3OH) and dimethylformamide [HCON(CH3)2] dissolution in a 4:1 ratio, adding to the precursor Zr(C5H7O2)4 in 3, 5 and 7M and Tb3+ ion as a dopant of 3 to 11% with 2% increments concerning precursor mass, deposition was at a temperature in the substrate of 450°C. Chemical analyses by EDS and IR check the synthesis of ZrO2 in film form. On the other hand, the characterization by DRX of the films of ZrO2 and ZrO2:Tb3+ have a compact Tetragonal structure, and a homogeneous coverage was observed using MEB, with spherical particles dispersed on the surface. Furthermore, excitation spectra were performed at λex=336nm, obtaining photoluminescence emission and identifying the electronic transitions associated with the Tb3+ ion given in 5D4→7F6, 5D4→7F5 (being the main band and of greater intensity), 5D4→7F4, 5D4→7F3 with a green emission characteristic of the doping ion. All studies were conducted at room temperature.
{"title":"Synthesis of ZrO2:Tb3+ from Zr(C5H7O2)4 in photoluminescent film form by UPS technique","authors":"Rojas Velasco I. Ivette, Juárez López Guilermo, Velázquez Cruz E. Isac, Yescas Mendoza Edgardo, Martínez Martínez Rafael, Falcony Guajardo Ciro","doi":"10.1109/iCASAT48251.2019.9069522","DOIUrl":"https://doi.org/10.1109/iCASAT48251.2019.9069522","url":null,"abstract":"This research consisted of obtaining photoluminescent films of ZrO<inf>2</inf>:Tb<sup>3+</sup> as a product of the synthesis of Zr(C<inf>5</inf>H<inf>7</inf>O<inf>2</inf>)<inf>4</inf>, which were deposited using the Ultrasonic Spray Pyrolitic (UPS) technique on Corning 7059 glass substrates. In a methanol (CH<inf>3</inf>OH) and dimethylformamide [HCON(CH<inf>3</inf>)<inf>2</inf>] dissolution in a 4:1 ratio, adding to the precursor Zr(C<inf>5</inf>H<inf>7</inf>O<inf>2</inf>)<inf>4</inf> in 3, 5 and 7M and Tb<sup>3+</sup> ion as a dopant of 3 to 11% with 2% increments concerning precursor mass, deposition was at a temperature in the substrate of 450°C. Chemical analyses by EDS and IR check the synthesis of ZrO<inf>2</inf> in film form. On the other hand, the characterization by DRX of the films of ZrO<inf>2</inf> and ZrO<inf>2</inf>:Tb<sup>3+</sup> have a compact Tetragonal structure, and a homogeneous coverage was observed using MEB, with spherical particles dispersed on the surface. Furthermore, excitation spectra were performed at λex=336nm, obtaining photoluminescence emission and identifying the electronic transitions associated with the Tb<sup>3+</sup> ion given in <sup>5</sup>D<inf>4</inf>→<sup>7</sup>F<inf>6</inf>, <sup>5</sup>D<inf>4</inf>→<sup>7</sup>F<inf>5</inf> (being the main band and of greater intensity), <sup>5</sup>D<inf>4</inf>→<sup>7</sup>F<inf>4</inf>, <sup>5</sup>D<inf>4</inf>→<sup>7</sup>F<inf>3</inf> with a green emission characteristic of the doping ion. All studies were conducted at room temperature.","PeriodicalId":178628,"journal":{"name":"2019 IEEE International Conference on Applied Science and Advanced Technology (iCASAT)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126393419","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 : 2019-11-01DOI: 10.1109/iCASAT48251.2019.9069530
Verónica O. Torres-Guerrero, Elijah T Adesuji, J. A. Arizpe-Zapata, K. Fuentes, N. Pineda-Aguilar, Marcelo Videa, M. Sánchez-Domínguez
Hierarchical superstructures (HSS) are three-dimensional structures with a significant improvement in some properties as compared to isolated nanoparticles. In the case of plasmonic materials, such as silver, a 3-D arrangement induces higher hot spots concentration which increase the electric field in the entire superstructure. This behavior can be exploited in Surface Enhanced Raman Spectroscopy (SERS) to detect analytes of concern at very low concentrations. However, the obtention of 3-D structures has been conducted by intricate methods that usually involves the synthesis of the building blocks and then, the assembly in superstructures in a second step. As an alternative one-pot procedure, we propose here the use of a bicontinuous microemulsion (BCME), since they are a confined reaction media with a nanostructured liquid morphology. We analyze the parameters that influence the formation of silver HSS and its application as SERS substrates for Rhodamine 6G sensing. By using sodium citrate as stabilizing agent before the total silver reduction in the water channels of the BCME, we were able to obtain an interconnected fibrous material composed of a silver citrate layer and connected 10 nm spherical silver nanoparticles. The decomposition of the silver citrate layer revealed the 3-D hierarchical arrangement of silver nanoparticles. The silver HSS showed and enhancement factor of 2.4x109 for the sensing of Rhodamine 6G in nM concentration, using a 633nm laser operating at 5% of the nominal power (17mW). This promising result indicates that this silver HSS are ideal SERS substrates to sense analytes that could be destroyed under harsh irradiation conditions.
{"title":"Synthesis of silver hierarchical superstructures in bicontinuous microemulsion and their application as SERS substrates","authors":"Verónica O. Torres-Guerrero, Elijah T Adesuji, J. A. Arizpe-Zapata, K. Fuentes, N. Pineda-Aguilar, Marcelo Videa, M. Sánchez-Domínguez","doi":"10.1109/iCASAT48251.2019.9069530","DOIUrl":"https://doi.org/10.1109/iCASAT48251.2019.9069530","url":null,"abstract":"Hierarchical superstructures (HSS) are three-dimensional structures with a significant improvement in some properties as compared to isolated nanoparticles. In the case of plasmonic materials, such as silver, a 3-D arrangement induces higher hot spots concentration which increase the electric field in the entire superstructure. This behavior can be exploited in Surface Enhanced Raman Spectroscopy (SERS) to detect analytes of concern at very low concentrations. However, the obtention of 3-D structures has been conducted by intricate methods that usually involves the synthesis of the building blocks and then, the assembly in superstructures in a second step. As an alternative one-pot procedure, we propose here the use of a bicontinuous microemulsion (BCME), since they are a confined reaction media with a nanostructured liquid morphology. We analyze the parameters that influence the formation of silver HSS and its application as SERS substrates for Rhodamine 6G sensing. By using sodium citrate as stabilizing agent before the total silver reduction in the water channels of the BCME, we were able to obtain an interconnected fibrous material composed of a silver citrate layer and connected 10 nm spherical silver nanoparticles. The decomposition of the silver citrate layer revealed the 3-D hierarchical arrangement of silver nanoparticles. The silver HSS showed and enhancement factor of 2.4x109 for the sensing of Rhodamine 6G in nM concentration, using a 633nm laser operating at 5% of the nominal power (17mW). This promising result indicates that this silver HSS are ideal SERS substrates to sense analytes that could be destroyed under harsh irradiation conditions.","PeriodicalId":178628,"journal":{"name":"2019 IEEE International Conference on Applied Science and Advanced Technology (iCASAT)","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121163306","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 : 2019-11-01DOI: 10.1109/iCASAT48251.2019.9069532
Jhon Freddy Rodríguez León, Eduardo Morales Sánches, E. C. Castañeda, T. Sarkodie-Gyan
This paper presents the theoretical study, design and experimental result of an original electromagnetic-spring actuator addressed for exoskeleton and/or rehabilitation applications. The proposed mechanism is designed with 2 passive magnets and an active magnet which allow store energy during the flexion and extension movements by means of the magnetic potential energy. The electromagnetic-spring actuator can control the position, speed and variable force by means of the electrical current applied to the active magnetic actuator. In this way, the actuator can be adapted to the requirements of torque according to its input signal.
{"title":"Conceptual Design and Experimental Test of an Electromagnetic-Spring Actuator Robotic Applications","authors":"Jhon Freddy Rodríguez León, Eduardo Morales Sánches, E. C. Castañeda, T. Sarkodie-Gyan","doi":"10.1109/iCASAT48251.2019.9069532","DOIUrl":"https://doi.org/10.1109/iCASAT48251.2019.9069532","url":null,"abstract":"This paper presents the theoretical study, design and experimental result of an original electromagnetic-spring actuator addressed for exoskeleton and/or rehabilitation applications. The proposed mechanism is designed with 2 passive magnets and an active magnet which allow store energy during the flexion and extension movements by means of the magnetic potential energy. The electromagnetic-spring actuator can control the position, speed and variable force by means of the electrical current applied to the active magnetic actuator. In this way, the actuator can be adapted to the requirements of torque according to its input signal.","PeriodicalId":178628,"journal":{"name":"2019 IEEE International Conference on Applied Science and Advanced Technology (iCASAT)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131354702","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 : 2019-11-01DOI: 10.1109/iCASAT48251.2019.9069537
Daniela Kristell Calvo Ramos, Margarita Eugenia Gutiérrez Ruíz, M. V. González, J. Santos Cruz, María Carolina Muñoz Torres, Sandra Andrea Mayén Hernández
Efforts to reduce arsenic contamination in water has led to the use of several processes of remediation. Photocatalysis remains one of the techniques yielding better results with lower material and operational costs. In the present study, we obtained the photoxidation of arsenite to arsenate in minutes. We use TiO2 as a photocatalizer with UV and solar lighting. We used an aqueous solution with As III and As V 1 mg/L concentration. The most outstanding results were obtained with 0.1 grams of TiO2 in 150 mL of the solution of As III, reaching a photoxidation to As V of 99% in 4 hours in the reactor with UV lamp. Photoxidation to As V was 94% in 6 hours with a solar lighting prototype using 2 grams of TiO2, in 3 L of a solution of As III. We verified that the As V is adsorbed in the TiO2 powder with or without the presence of light. Regardless of the same conditions, As III was not absorbed. Photoxidation in natural sunlight is somewhat slower compared to the use of a UV lamp, but the energy savings is 100%, providing a significant environmental and sustainability value to the process.
减少水中砷污染的努力导致使用了几种补救方法。光催化仍然是一种以更低的材料和操作成本获得更好结果的技术。在本研究中，我们在几分钟内得到了亚砷酸盐的光氧化反应。我们使用TiO2作为紫外线和太阳能照明的光催化剂。我们使用了浓度为1mg /L的asiii和asv水溶液。在150ml的As III溶液中加入0.1 g TiO2，在紫外灯下，在反应器中4小时达到99%的As V光氧化，结果最为显著。在使用2g TiO2的太阳能照明原型中，在3l的As III溶液中，6小时内光氧化成As V的比例为94%。我们验证了As V在有光或没有光的情况下被吸附在TiO2粉末中。在相同条件下，砷ⅲ均未被吸收。与使用紫外线灯相比，在自然光下的光氧化稍微慢一些，但节省了100%的能源，为该过程提供了重要的环境和可持续性价值。
{"title":"Photoxidation of As3+ to As5+ in the presence of TiO2 under lighting conditions of a lamp and sunlight","authors":"Daniela Kristell Calvo Ramos, Margarita Eugenia Gutiérrez Ruíz, M. V. González, J. Santos Cruz, María Carolina Muñoz Torres, Sandra Andrea Mayén Hernández","doi":"10.1109/iCASAT48251.2019.9069537","DOIUrl":"https://doi.org/10.1109/iCASAT48251.2019.9069537","url":null,"abstract":"Efforts to reduce arsenic contamination in water has led to the use of several processes of remediation. Photocatalysis remains one of the techniques yielding better results with lower material and operational costs. In the present study, we obtained the photoxidation of arsenite to arsenate in minutes. We use TiO2 as a photocatalizer with UV and solar lighting. We used an aqueous solution with As III and As V 1 mg/L concentration. The most outstanding results were obtained with 0.1 grams of TiO2 in 150 mL of the solution of As III, reaching a photoxidation to As V of 99% in 4 hours in the reactor with UV lamp. Photoxidation to As V was 94% in 6 hours with a solar lighting prototype using 2 grams of TiO2, in 3 L of a solution of As III. We verified that the As V is adsorbed in the TiO2 powder with or without the presence of light. Regardless of the same conditions, As III was not absorbed. Photoxidation in natural sunlight is somewhat slower compared to the use of a UV lamp, but the energy savings is 100%, providing a significant environmental and sustainability value to the process.","PeriodicalId":178628,"journal":{"name":"2019 IEEE International Conference on Applied Science and Advanced Technology (iCASAT)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130967162","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}
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