A. Jarasjarungkiat, Chaisiri Okoun, Praphaporn Silarach
Analysis of influences line in structures that are complex or indeterminate will make the analysis difficult and time-consuming. Therefore, the researchers have developed an application to analyze beam structures in 2 dimensions that easy to use, convenient, and uncomplicated. In this research, the Double integration method and the Singularity function method are used to analyze the structure. Furthermore, Python is used to develop all of the instructions in Object-oriented programming (OOP) application development. The developed application is capable to analyze the influence lines of structures and display the results in form of animation to show load displacement and structural response. Moreover, it was incorporated with analysis to show basic structural diagrams such as bending, shear, and deflection diagrams. In the final word, this application will be a handy tool for better visualization and investigation behaviors of structures in actual design work.
{"title":"Structural influence line analysis program based on python","authors":"A. Jarasjarungkiat, Chaisiri Okoun, Praphaporn Silarach","doi":"10.1063/5.0064504","DOIUrl":"https://doi.org/10.1063/5.0064504","url":null,"abstract":"Analysis of influences line in structures that are complex or indeterminate will make the analysis difficult and time-consuming. Therefore, the researchers have developed an application to analyze beam structures in 2 dimensions that easy to use, convenient, and uncomplicated. In this research, the Double integration method and the Singularity function method are used to analyze the structure. Furthermore, Python is used to develop all of the instructions in Object-oriented programming (OOP) application development. The developed application is capable to analyze the influence lines of structures and display the results in form of animation to show load displacement and structural response. Moreover, it was incorporated with analysis to show basic structural diagrams such as bending, shear, and deflection diagrams. In the final word, this application will be a handy tool for better visualization and investigation behaviors of structures in actual design work.","PeriodicalId":445992,"journal":{"name":"THE 7TH INTERNATIONAL CONFERENCE ON ENGINEERING, APPLIED SCIENCES AND TECHNOLOGY: (ICEAST2021)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126339270","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}
Plants have ability to convert solar energy into chemical energy in photosynthetic process to produce their own food. Under this process, chlorophyll molecules in plant cell are excited and cascade transferring a high energy electron to the accepters, therefore the electrical currents are generated in this plant system. This current is thinking as the alternative power resources in the future. Titanium dioxide (TiO2) is widely used in photocatalysis in semiconductors because of large bandgap polymorphs of this particles. This substance enhances an absorbing light of different wavelengths owing to their electronic structure. In this experiment, TiO2 nanoparticles are added up into different concentrations of nutrient solution under plant fuel cell system, in order to study the generation of electric power. The cathode and anode electrodes, in the system were zinc steel and polypropylene mixed with CNTs. Electrical potentials and currents of plant fuel cell system with TiO2 are detected and recorded in comparison to that of system without TiO2. Plant fuel cell system, adding TiO2 nanoparticles enhances the current density and voltage in comparison to the non TiO2 system, depending on the concentration of nutrient solution medium and detection time. TiO2 nanoparticle adding in liquid nutrient of plant fuel cell enhance the electric power density, because this particle may improve an absorption of light radiation. The process may increase the oxidation of water and soluble nutrients which escalate the level of total ionic charges in the fuel system. The charges were separated and transferred to the specific electrodes that will be affected on power density generating from the fuel cell system.
{"title":"Titanium dioxide nanoparticles in nutrient solution for enhancement of power density generated from plant fuel cell","authors":"Kanokporn Sompornpailin, S. Siri","doi":"10.1063/5.0064062","DOIUrl":"https://doi.org/10.1063/5.0064062","url":null,"abstract":"Plants have ability to convert solar energy into chemical energy in photosynthetic process to produce their own food. Under this process, chlorophyll molecules in plant cell are excited and cascade transferring a high energy electron to the accepters, therefore the electrical currents are generated in this plant system. This current is thinking as the alternative power resources in the future. Titanium dioxide (TiO2) is widely used in photocatalysis in semiconductors because of large bandgap polymorphs of this particles. This substance enhances an absorbing light of different wavelengths owing to their electronic structure. In this experiment, TiO2 nanoparticles are added up into different concentrations of nutrient solution under plant fuel cell system, in order to study the generation of electric power. The cathode and anode electrodes, in the system were zinc steel and polypropylene mixed with CNTs. Electrical potentials and currents of plant fuel cell system with TiO2 are detected and recorded in comparison to that of system without TiO2. Plant fuel cell system, adding TiO2 nanoparticles enhances the current density and voltage in comparison to the non TiO2 system, depending on the concentration of nutrient solution medium and detection time. TiO2 nanoparticle adding in liquid nutrient of plant fuel cell enhance the electric power density, because this particle may improve an absorption of light radiation. The process may increase the oxidation of water and soluble nutrients which escalate the level of total ionic charges in the fuel system. The charges were separated and transferred to the specific electrodes that will be affected on power density generating from the fuel cell system.","PeriodicalId":445992,"journal":{"name":"THE 7TH INTERNATIONAL CONFERENCE ON ENGINEERING, APPLIED SCIENCES AND TECHNOLOGY: (ICEAST2021)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126435536","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}
A. Suriyawong, S. Saisorn, N. Suwanpayak, S. Wongwises
The study was the conditioning system of the electronic case by using thermoelectric Peltier module. The Peltier module is used based on the temperature difference of the hot and cold sides, with input electric power in the thermoelectric Peltier module. The hot side of the Peltier module was installed on a side of the heat sinks with heat removing from a Peltier module into a surrounding while the cold side of the Peltier module was installed on the other side of the heat sinks with the heat absorption of the computer case. The electronic case volume is 450x395x240 mm³. The device of cooling loads was installed in the electronic case. The cooling loads were tested with various power of 0, 60, 120, 180, and 240 Watt. The results indicated that the coefficient of performance (COP) increased with the cooling load. Furthermore, the experimental results indicated that the temperature inside the electronic case increased with cooling load because the temperature of the electronic case increased with decreasing the temperature difference between the hot and the cold sides.
{"title":"Management of air conditioning system in electronics housing by using thermoelectric Peltier module","authors":"A. Suriyawong, S. Saisorn, N. Suwanpayak, S. Wongwises","doi":"10.1063/5.0064404","DOIUrl":"https://doi.org/10.1063/5.0064404","url":null,"abstract":"The study was the conditioning system of the electronic case by using thermoelectric Peltier module. The Peltier module is used based on the temperature difference of the hot and cold sides, with input electric power in the thermoelectric Peltier module. The hot side of the Peltier module was installed on a side of the heat sinks with heat removing from a Peltier module into a surrounding while the cold side of the Peltier module was installed on the other side of the heat sinks with the heat absorption of the computer case. The electronic case volume is 450x395x240 mm³. The device of cooling loads was installed in the electronic case. The cooling loads were tested with various power of 0, 60, 120, 180, and 240 Watt. The results indicated that the coefficient of performance (COP) increased with the cooling load. Furthermore, the experimental results indicated that the temperature inside the electronic case increased with cooling load because the temperature of the electronic case increased with decreasing the temperature difference between the hot and the cold sides.","PeriodicalId":445992,"journal":{"name":"THE 7TH INTERNATIONAL CONFERENCE ON ENGINEERING, APPLIED SCIENCES AND TECHNOLOGY: (ICEAST2021)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128799130","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}
Since neutrons especially fast neutron has a high weighting factor in radiation dosimetry, exposing the human’s body to a neutron source in a laboratory or clinic may put body tissues at risk and dangerous situations. In doing so, in this investigation, body tissue together with soft tissues (including adipose and skin) were decomposed into their fundamental elements, and then got emitted by neutrons. This research can be put into operation all tissues about cancer therapy. The amounts of neutron energy because of the collision between neutrons and nuclei of the basic elements got calculated in the tissue Next, some results got concluded. The results imply that the highest transferred energy happens within the energy range 3.5-10.5 MeV and also energy ranges 15-16.5 MeV. As well, the tendencies of the transferred-energy graphs were very in a similar way and are the same as other fundamental elements, and the maximum transferred energy happened for the elements that had a small atomic weight.
{"title":"A new investigation into the estimation of transferred energy from a neutron source to a human’s body","authors":"Seyed Alireza Mousavi Shirazi","doi":"10.1063/5.0063749","DOIUrl":"https://doi.org/10.1063/5.0063749","url":null,"abstract":"Since neutrons especially fast neutron has a high weighting factor in radiation dosimetry, exposing the human’s body to a neutron source in a laboratory or clinic may put body tissues at risk and dangerous situations. In doing so, in this investigation, body tissue together with soft tissues (including adipose and skin) were decomposed into their fundamental elements, and then got emitted by neutrons. This research can be put into operation all tissues about cancer therapy. The amounts of neutron energy because of the collision between neutrons and nuclei of the basic elements got calculated in the tissue Next, some results got concluded. The results imply that the highest transferred energy happens within the energy range 3.5-10.5 MeV and also energy ranges 15-16.5 MeV. As well, the tendencies of the transferred-energy graphs were very in a similar way and are the same as other fundamental elements, and the maximum transferred energy happened for the elements that had a small atomic weight.","PeriodicalId":445992,"journal":{"name":"THE 7TH INTERNATIONAL CONFERENCE ON ENGINEERING, APPLIED SCIENCES AND TECHNOLOGY: (ICEAST2021)","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128371364","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}
Bussaba Arre, Phisit Seesuriyachan, W. Wattanutchariya
In the current year, the agricultural business is adopting a holistic management technique, using the concept to build through the ecosystem and the supply chain of the product. This approach studies the upstream, midstream and downstream of the product platform. In the case of coffee, it starts with coffee farmers, coffee processing manufacturer, and coffee wholesalers or retailers. By collecting data from the Doi Chang coffee farmer community, which is an arable area on a plateau in northern Thailand. For the development of Arabica coffee growing potential, the situation of entrepreneurs will be surveyed and analyzed through economic analysis. Focus on the methods they use to process coffee cherries into coffee beans. For downstream, market studies and economic assessments will be used to suggest potential strategies that can enhance and create value for these entrepreneurial products. This research aimed to address common challenges in the manufacturing industry, simplify the technology adoption process and improve coffee sales and marketing. The research methodology is a mixed method and based on participatory research techniques. During the study, the following holistic management models are applied: 1) the management paradigm shift and study visit; 2) Developing transformational leadership strategies and 3) Organizing activities to develop methods of processing coffee into value- added products. In upstream management, land improvement, strengthen local community’s engagement, as well as promoting organic agriculture farming are evaluated. Then, a training program is organized to educate farmers about coffee in the highland fields and the processing of value-added coffee products from coffee by-products. For midstream applications, a holistic management approach will encourage manufacturers to improve the efficiency of the coffee drying process, as well as to control the quality of dry coffee beans using solar dry dome. The study found that the improvement of the good drying technique would make the dry coffee mold free and not destroy the essential substances in the coffee beans. In addition, the new drying process is able to save electricity with an annual production capacity of 4.8 tons, which is 1.5 times higher than the previous method. With this new approach, the payback period of the solar dome is only one season of cherry harvesting period. In downstream, development approaches encourage entrepreneurs to understand various marketing strategies. That can increase the market potential of their new products. Additionally, future development will include supply chain collaboration and management in order to further expand their business platform and develop sustainable growth to the entrepreneur.
{"title":"Holistic management approach to local coffee entrepreneur in northern Thailand","authors":"Bussaba Arre, Phisit Seesuriyachan, W. Wattanutchariya","doi":"10.1063/5.0063782","DOIUrl":"https://doi.org/10.1063/5.0063782","url":null,"abstract":"In the current year, the agricultural business is adopting a holistic management technique, using the concept to build through the ecosystem and the supply chain of the product. This approach studies the upstream, midstream and downstream of the product platform. In the case of coffee, it starts with coffee farmers, coffee processing manufacturer, and coffee wholesalers or retailers. By collecting data from the Doi Chang coffee farmer community, which is an arable area on a plateau in northern Thailand. For the development of Arabica coffee growing potential, the situation of entrepreneurs will be surveyed and analyzed through economic analysis. Focus on the methods they use to process coffee cherries into coffee beans. For downstream, market studies and economic assessments will be used to suggest potential strategies that can enhance and create value for these entrepreneurial products. This research aimed to address common challenges in the manufacturing industry, simplify the technology adoption process and improve coffee sales and marketing. The research methodology is a mixed method and based on participatory research techniques. During the study, the following holistic management models are applied: 1) the management paradigm shift and study visit; 2) Developing transformational leadership strategies and 3) Organizing activities to develop methods of processing coffee into value- added products. In upstream management, land improvement, strengthen local community’s engagement, as well as promoting organic agriculture farming are evaluated. Then, a training program is organized to educate farmers about coffee in the highland fields and the processing of value-added coffee products from coffee by-products. For midstream applications, a holistic management approach will encourage manufacturers to improve the efficiency of the coffee drying process, as well as to control the quality of dry coffee beans using solar dry dome. The study found that the improvement of the good drying technique would make the dry coffee mold free and not destroy the essential substances in the coffee beans. In addition, the new drying process is able to save electricity with an annual production capacity of 4.8 tons, which is 1.5 times higher than the previous method. With this new approach, the payback period of the solar dome is only one season of cherry harvesting period. In downstream, development approaches encourage entrepreneurs to understand various marketing strategies. That can increase the market potential of their new products. Additionally, future development will include supply chain collaboration and management in order to further expand their business platform and develop sustainable growth to the entrepreneur.","PeriodicalId":445992,"journal":{"name":"THE 7TH INTERNATIONAL CONFERENCE ON ENGINEERING, APPLIED SCIENCES AND TECHNOLOGY: (ICEAST2021)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117300285","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}
Prashil Raj Shrestha, Smrit Dhimal, K. Navin, Pratisthit Lal Shrestha, B. Thapa, Tejesh Man Shakya
The investment and sand casting have always been a problematic case for complex shapes such as turbines, blades, and so on in Nepal, and due to which this has always been ineffective regarding functionality and financial aspects, because of multiple iterations of casting. The casting of turbines in a single iteration with few defects would be beneficial both in terms of cost and material use as well as the environment. Necessary expertise in this field can be gained from casting simulation. The paper is about the use of casting simulators like ProCAST with CAD software to understand the better method for investment casting. The single gating system was approached with Caine’s method and Chvorinov’s method in casting. Also, a section of the runner was cast at Metal Cast Pvt. Ltd, Butwal, using sand casting which was verified on ProCAST. Investment casting of 92kW and 14 kW Francis’s runner turbine was simulated with minimum defects like shrinkage and porosity (under 4%) and CSF above 50%. Also, the Mass flowrate was around 2.23 kg/sec. Thus, the study deals with a better way to improve the investment casting of turbines through the help of simulation.
{"title":"Simulation and analysis of investment casting process on Francis turbine runner","authors":"Prashil Raj Shrestha, Smrit Dhimal, K. Navin, Pratisthit Lal Shrestha, B. Thapa, Tejesh Man Shakya","doi":"10.1063/5.0065030","DOIUrl":"https://doi.org/10.1063/5.0065030","url":null,"abstract":"The investment and sand casting have always been a problematic case for complex shapes such as turbines, blades, and so on in Nepal, and due to which this has always been ineffective regarding functionality and financial aspects, because of multiple iterations of casting. The casting of turbines in a single iteration with few defects would be beneficial both in terms of cost and material use as well as the environment. Necessary expertise in this field can be gained from casting simulation. The paper is about the use of casting simulators like ProCAST with CAD software to understand the better method for investment casting. The single gating system was approached with Caine’s method and Chvorinov’s method in casting. Also, a section of the runner was cast at Metal Cast Pvt. Ltd, Butwal, using sand casting which was verified on ProCAST. Investment casting of 92kW and 14 kW Francis’s runner turbine was simulated with minimum defects like shrinkage and porosity (under 4%) and CSF above 50%. Also, the Mass flowrate was around 2.23 kg/sec. Thus, the study deals with a better way to improve the investment casting of turbines through the help of simulation.","PeriodicalId":445992,"journal":{"name":"THE 7TH INTERNATIONAL CONFERENCE ON ENGINEERING, APPLIED SCIENCES AND TECHNOLOGY: (ICEAST2021)","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122145739","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}
This research presents a heat transfer enhancement technique on a Stirling engine heater equipped with a biomass fuel burner. ANSYS Fluent software was utilized in the computation of heat transfer, including heat flux and temperature distribution on the heater component of the engine. Effects of the increasing of the heating surface on heat transfer enhancement were investigated. Fin effectiveness resulting from the fin parameter variation of the heater, such as fin diameter and fin spacing, was evaluated for heat transfer under forced convection and heat conduction. This simulation results in the fin configuration most suitable for the fabrication of our Stirling engine heater.
{"title":"Heat transfer enhancement and investigation on Stirling engine heater with biomass application","authors":"Punsa Tuntrakeun, P. Kansuwan, S. Kwankaomeng","doi":"10.1063/5.0064910","DOIUrl":"https://doi.org/10.1063/5.0064910","url":null,"abstract":"This research presents a heat transfer enhancement technique on a Stirling engine heater equipped with a biomass fuel burner. ANSYS Fluent software was utilized in the computation of heat transfer, including heat flux and temperature distribution on the heater component of the engine. Effects of the increasing of the heating surface on heat transfer enhancement were investigated. Fin effectiveness resulting from the fin parameter variation of the heater, such as fin diameter and fin spacing, was evaluated for heat transfer under forced convection and heat conduction. This simulation results in the fin configuration most suitable for the fabrication of our Stirling engine heater.","PeriodicalId":445992,"journal":{"name":"THE 7TH INTERNATIONAL CONFERENCE ON ENGINEERING, APPLIED SCIENCES AND TECHNOLOGY: (ICEAST2021)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115074293","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}
Prashil Raj Shrestha, Dipa Timalsina, Sabal Bista, B. Shrestha, Tejesh Man Shakya
Completely redesigning a product has allowed designers to think beyond their comfort zone and view the multiple alternatives of a design problem. A designer can only focus on a handful of iteration of a design during the product development phase. Despite many design approaches that have been already proposed, they are all time-consuming and tedious to meet a pool of proposed solutions. To address this problem, this is where the Generative Design Approach comes into play. Several fields have been using this approach to address the problem in the design process. Here, we have adopted the generative design approach to develop a guitar holder and going to talk about a Mechanical Design Problem and how it was addressed. The study provides a practical description of the generative workflow and the outcome of which is cast and tested as in the design parameter. The software used was Autodesk Fusion 360 where a Guitar Holder was taken into consideration for the design process. The Generative Design process incorporated the biomimetic approach considering factors such as appearance, cost and strength. Total Load of 60N normal to the faces were applied. Several materials including ABS, PLA, Brass, Bronze, and Aluminum were considered and several Manufacturing processes like 3D printing, Investment and Sand Casting and CNC machining were considered in the Initial Phase. The 3D printed model was used as pattern for Investment and sand Casting. The casting materials used were bronze and aluminum. Among all the alternatives, the 220 gm sand casted bronze guitar holder satisfied the vast pool of requirement for mass production in terms of aesthetics, economics and structural integrity.
{"title":"Generative design approach for product development","authors":"Prashil Raj Shrestha, Dipa Timalsina, Sabal Bista, B. Shrestha, Tejesh Man Shakya","doi":"10.1063/5.0065031","DOIUrl":"https://doi.org/10.1063/5.0065031","url":null,"abstract":"Completely redesigning a product has allowed designers to think beyond their comfort zone and view the multiple alternatives of a design problem. A designer can only focus on a handful of iteration of a design during the product development phase. Despite many design approaches that have been already proposed, they are all time-consuming and tedious to meet a pool of proposed solutions. To address this problem, this is where the Generative Design Approach comes into play. Several fields have been using this approach to address the problem in the design process. Here, we have adopted the generative design approach to develop a guitar holder and going to talk about a Mechanical Design Problem and how it was addressed. The study provides a practical description of the generative workflow and the outcome of which is cast and tested as in the design parameter. The software used was Autodesk Fusion 360 where a Guitar Holder was taken into consideration for the design process. The Generative Design process incorporated the biomimetic approach considering factors such as appearance, cost and strength. Total Load of 60N normal to the faces were applied. Several materials including ABS, PLA, Brass, Bronze, and Aluminum were considered and several Manufacturing processes like 3D printing, Investment and Sand Casting and CNC machining were considered in the Initial Phase. The 3D printed model was used as pattern for Investment and sand Casting. The casting materials used were bronze and aluminum. Among all the alternatives, the 220 gm sand casted bronze guitar holder satisfied the vast pool of requirement for mass production in terms of aesthetics, economics and structural integrity.","PeriodicalId":445992,"journal":{"name":"THE 7TH INTERNATIONAL CONFERENCE ON ENGINEERING, APPLIED SCIENCES AND TECHNOLOGY: (ICEAST2021)","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116730115","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}
S. Aichayawanich, Montol Seangprapaitip, J. Wongsa
This research aims to study properties of karanda extract and chitosan coating incorporated with karanda extract. Karanda was extracted by distilled water at ratio between dried karanda and distilled water equal to 1:5, 1:6 and 1:7 (w/v). Then, karanda extract was mixed with chitosan coating at percentage of karanda extract equal to 1%, 3% and 5% (v/v). After measuring of antioxidation and antimicrobial activity of karanda extract and chitosan coating incorporated with karanda extract, the results presented that karanda extract had antioxidation activity and antimicrobial activity against E. coli. The karanda extract that extract by distilled water at the ratio between dried karanda and distilled water equal to 1:5 (w/v) showed the highest antioxidation and antimicrobial activity. Antioxidation and antimicrobial activity of the extract still active after using to prepare chitosan coating incorporated with karanda extract. Both activities increased when percentage of the karanda extract in the coating increased. For investigation of viscosity of the coating, viscosity of the coating decreased with increasing of percentage of the karanda extract in the coating. When coating the chitosan coating incorporated with karanda extract on tomato samples, the result showed that the consumers accept color, odor and appearance of the coated tomato samples more than that of tomato samples without coating. During storage interval, percentage of weight loss of coated tomato samples had lower than that of tomato samples without coating. However, weight loss values of coated tomato samples did not significantly depend on the percentage of karanda extract in the coating. After 15 days of storage period, the coated tomato samples still had the acceptable characteristics.
{"title":"The properties of karanda extract and chitosan coating incorporated with karanda (Carissa carandas Linn.) extract","authors":"S. Aichayawanich, Montol Seangprapaitip, J. Wongsa","doi":"10.1063/5.0063789","DOIUrl":"https://doi.org/10.1063/5.0063789","url":null,"abstract":"This research aims to study properties of karanda extract and chitosan coating incorporated with karanda extract. Karanda was extracted by distilled water at ratio between dried karanda and distilled water equal to 1:5, 1:6 and 1:7 (w/v). Then, karanda extract was mixed with chitosan coating at percentage of karanda extract equal to 1%, 3% and 5% (v/v). After measuring of antioxidation and antimicrobial activity of karanda extract and chitosan coating incorporated with karanda extract, the results presented that karanda extract had antioxidation activity and antimicrobial activity against E. coli. The karanda extract that extract by distilled water at the ratio between dried karanda and distilled water equal to 1:5 (w/v) showed the highest antioxidation and antimicrobial activity. Antioxidation and antimicrobial activity of the extract still active after using to prepare chitosan coating incorporated with karanda extract. Both activities increased when percentage of the karanda extract in the coating increased. For investigation of viscosity of the coating, viscosity of the coating decreased with increasing of percentage of the karanda extract in the coating. When coating the chitosan coating incorporated with karanda extract on tomato samples, the result showed that the consumers accept color, odor and appearance of the coated tomato samples more than that of tomato samples without coating. During storage interval, percentage of weight loss of coated tomato samples had lower than that of tomato samples without coating. However, weight loss values of coated tomato samples did not significantly depend on the percentage of karanda extract in the coating. After 15 days of storage period, the coated tomato samples still had the acceptable characteristics.","PeriodicalId":445992,"journal":{"name":"THE 7TH INTERNATIONAL CONFERENCE ON ENGINEERING, APPLIED SCIENCES AND TECHNOLOGY: (ICEAST2021)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117189831","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}
A. Suriyawong, Kritsada Pratuyai, S. Wongwises, S. Saisorn
The development of two-phase flow patterns in helical micro-tube was experimentally investigated. The adiabatic gas-liquid two-phase flow regime maps were presented based on a 0.87 mm inner diameter tube which was helical glass channel. Working fluid in the helically coiled tube was air-water mixture flowing in vertical upward direction. The diameter of the helical coil and the relevant pitch were, respectively, 50 mm and 20 mm. Flow visualization was carried out at different positions along the micro-tube length in order to examine the significance of the centrifugal force existing in addition to the conventional force vectors. In this work, slug flow, churn flow, throat-annular flow, and annular flow were observed and compared to the existing flow transition boundaries developed from micro-channel configurations.
{"title":"An experimental study of adiabatic two-phase gas-liquid flow in helical micro-tube","authors":"A. Suriyawong, Kritsada Pratuyai, S. Wongwises, S. Saisorn","doi":"10.1063/5.0063787","DOIUrl":"https://doi.org/10.1063/5.0063787","url":null,"abstract":"The development of two-phase flow patterns in helical micro-tube was experimentally investigated. The adiabatic gas-liquid two-phase flow regime maps were presented based on a 0.87 mm inner diameter tube which was helical glass channel. Working fluid in the helically coiled tube was air-water mixture flowing in vertical upward direction. The diameter of the helical coil and the relevant pitch were, respectively, 50 mm and 20 mm. Flow visualization was carried out at different positions along the micro-tube length in order to examine the significance of the centrifugal force existing in addition to the conventional force vectors. In this work, slug flow, churn flow, throat-annular flow, and annular flow were observed and compared to the existing flow transition boundaries developed from micro-channel configurations.","PeriodicalId":445992,"journal":{"name":"THE 7TH INTERNATIONAL CONFERENCE ON ENGINEERING, APPLIED SCIENCES AND TECHNOLOGY: (ICEAST2021)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122528836","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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