Fermented fish is a favorite traditional food in North-East of Thailand that prepare using many kinds of fish. Various pathogens are survived during the fermentation causing the diarrhea. The aim of this research was to isolate foodborne pathogens including Staphylococcus aureus, Vibrio cholerae, and Escherichia coli from Pla-ra and Jaew bong using selective and differential media-based method and multiple polymerase chain reaction (mPCR). Twenty samples of Pla-ra and five samples of Jaew bong were randomly purchased from local market located in Selaphum, Roi Et, Thailand. Foodborne pathogens were isolated using selective and differential media. The cell structure, gene amplification and Gram staining were characterized for confirmation. The results indicated that Pla-ra and Jaew bong sample were contaminated with Vibrio cholerae, Staphylococcus aureus and Escherichia coli, respectively. The predominant foodborne pathogens isolated form Pla-ra and Jaew bong was S. aureus.
发酵鱼是泰国东北部最受欢迎的传统食品，使用多种鱼类制作。在发酵过程中，各种病原体存活下来，引起腹泻。本研究的目的是采用基于选择性和差异培养基的方法和多重聚合酶链反应(mPCR)分离pla和Jaew bong中的金黄色葡萄球菌、霍乱弧菌和大肠杆菌等食源性病原体。在泰国Roi Et Selaphum的当地市场随机购买了20份Pla-ra样品和5份Jaew bong样品。采用选择性和差别化培养基分离食源性致病菌。通过细胞结构、基因扩增和革兰氏染色进行鉴定。结果表明，样品中分别含有霍乱弧菌、金黄色葡萄球菌和大肠杆菌。从plara和jaww bong中分离的食源性致病菌以金黄色葡萄球菌为主。
{"title":"Foodborne pathogens in fermented fish purchased in Selaphum, Roi Et","authors":"Surachai Rattanasuk, Jiraphat Boonbao, Nattawut Sankumpa, Thanai Surasilp","doi":"10.1109/TICST.2015.7369357","DOIUrl":"https://doi.org/10.1109/TICST.2015.7369357","url":null,"abstract":"Fermented fish is a favorite traditional food in North-East of Thailand that prepare using many kinds of fish. Various pathogens are survived during the fermentation causing the diarrhea. The aim of this research was to isolate foodborne pathogens including Staphylococcus aureus, Vibrio cholerae, and Escherichia coli from Pla-ra and Jaew bong using selective and differential media-based method and multiple polymerase chain reaction (mPCR). Twenty samples of Pla-ra and five samples of Jaew bong were randomly purchased from local market located in Selaphum, Roi Et, Thailand. Foodborne pathogens were isolated using selective and differential media. The cell structure, gene amplification and Gram staining were characterized for confirmation. The results indicated that Pla-ra and Jaew bong sample were contaminated with Vibrio cholerae, Staphylococcus aureus and Escherichia coli, respectively. The predominant foodborne pathogens isolated form Pla-ra and Jaew bong was S. aureus.","PeriodicalId":251893,"journal":{"name":"2015 International Conference on Science and Technology (TICST)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121193292","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 : 2015-11-01DOI: 10.1109/TICST.2015.7369362
Suwapich Pornsatitworakul, Saowalak Phikulthai, S. Namuangruk, B. Boekfa
The oxidation mechanism of CO to CO2 catalyzed by Fe-porphyrin using N2O as oxidizing agent has been studied by M06-L method. The reaction mechanism consists of two consecutive steps: the decomposition of N2O to produce Fe-O species and subsequently the conversion of CO to CO2. The adsorption energies are -3.8 kcal/mol for N2O on Fe-porphyrin and -24.1 kcal/mol for CO on Fe(O)-porphyrin. The calculated activation energies are 26.1 and 11.4 kcal/mol for the first and second steps, respectively. The calculation results predict that the reaction could process under mind condition due to the small activation energies and high exothermic reaction. For the environmental implication, the Fe-porphyrin is predicted as a potential catalyst for the reduction of N2O and the oxidation of CO at ambient condition.
{"title":"Catalytic oxidation of CO with N2O on Fe-porphyrin catalyst","authors":"Suwapich Pornsatitworakul, Saowalak Phikulthai, S. Namuangruk, B. Boekfa","doi":"10.1109/TICST.2015.7369362","DOIUrl":"https://doi.org/10.1109/TICST.2015.7369362","url":null,"abstract":"The oxidation mechanism of CO to CO2 catalyzed by Fe-porphyrin using N2O as oxidizing agent has been studied by M06-L method. The reaction mechanism consists of two consecutive steps: the decomposition of N2O to produce Fe-O species and subsequently the conversion of CO to CO2. The adsorption energies are -3.8 kcal/mol for N2O on Fe-porphyrin and -24.1 kcal/mol for CO on Fe(O)-porphyrin. The calculated activation energies are 26.1 and 11.4 kcal/mol for the first and second steps, respectively. The calculation results predict that the reaction could process under mind condition due to the small activation energies and high exothermic reaction. For the environmental implication, the Fe-porphyrin is predicted as a potential catalyst for the reduction of N2O and the oxidation of CO at ambient condition.","PeriodicalId":251893,"journal":{"name":"2015 International Conference on Science and Technology (TICST)","volume":"189 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132604980","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 : 2015-11-01DOI: 10.1109/TICST.2015.7369363
M. A. Setiawan, Heru Hangtry Putra
WHO in its report in 2010 stated that voluntary blood donor is a crucial component and a core service within health care systems. The existence of voluntary blood donor has saved millions of lives. Few studies showed that that non-remunerated donors have very importance rules to fulfil the blood demands. Unfortunately, according to the same report, WHO concluded that there are many patients who could not meet the clinical demands due to blood stocks limitation which has serious consequences to the health of the patient. Few studies on blood donor motivation have shown that there are factors affecting donors to donate their blood. Some of the reasons on why people do not donate their blood are: their distances are too far from where the blood is needed, and other factor is that they have never been asked to donate their blood. The other problem that affecting the supply of blood donors are to retain or to maintain the loyalty of a donor so that he/she can become regular donor. This paper discusses on how smartphone can help to increase the number of blood donors and improve its retention especially among youth. In this paper, we use a context aware system approach i.e. a system that aware of their environment that is implemented in the smartphone, to allow users of smartphone to receive only relevant information e.g. nearby location where the demand of the blood is there. We also utilizes gamification technique to improve the user loyalty.
{"title":"Bloodhub: A context aware system to increase voluntary blood donors' participation","authors":"M. A. Setiawan, Heru Hangtry Putra","doi":"10.1109/TICST.2015.7369363","DOIUrl":"https://doi.org/10.1109/TICST.2015.7369363","url":null,"abstract":"WHO in its report in 2010 stated that voluntary blood donor is a crucial component and a core service within health care systems. The existence of voluntary blood donor has saved millions of lives. Few studies showed that that non-remunerated donors have very importance rules to fulfil the blood demands. Unfortunately, according to the same report, WHO concluded that there are many patients who could not meet the clinical demands due to blood stocks limitation which has serious consequences to the health of the patient. Few studies on blood donor motivation have shown that there are factors affecting donors to donate their blood. Some of the reasons on why people do not donate their blood are: their distances are too far from where the blood is needed, and other factor is that they have never been asked to donate their blood. The other problem that affecting the supply of blood donors are to retain or to maintain the loyalty of a donor so that he/she can become regular donor. This paper discusses on how smartphone can help to increase the number of blood donors and improve its retention especially among youth. In this paper, we use a context aware system approach i.e. a system that aware of their environment that is implemented in the smartphone, to allow users of smartphone to receive only relevant information e.g. nearby location where the demand of the blood is there. We also utilizes gamification technique to improve the user loyalty.","PeriodicalId":251893,"journal":{"name":"2015 International Conference on Science and Technology (TICST)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131891538","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 : 2015-11-01DOI: 10.1109/TICST.2015.7369349
A. Areesirisuk, C. Chiu, T. Yen, Chun‐Hung Liu, S. Pongswat, Jia Guo
Microbial oil production by a novel oleaginous yeast Pseudozyma parantarctica CHC28 was studied using glucose as the main carbon source, in order to investigate its growth, oil production and fatty acid characterization among various glucose concentrations. Batch cultivations demonstrated that there was no significantly inhibitory effect at 100 g/L glucose. Moreover, the highest oil production and oil content of P. parantarctica CHC28 were obtained for 10.99 g/L and 49.66 %dry weight, respectively at 100 g/L glucose. During 120 and 150 g/L glucose, these values were not significantly increased. Furthermore, the fatty acid compositions of P. parantarctica CHC28 were also investigated in this study. The long-chain fatty acids (C16 to C18) were main fatty acids in all conditions, which were ranged between 86.62% and 90.79%. The short-chain fatty acids (carbon less than 14 atoms) were decreased while very long-chain fatty acid (carbon over than 20 atoms) were increased with increasing glucose level. The percentages of saturated (SFA), mono-(MUFA), poly-(PUFA), and total unsaturated fatty acid (TUFA) in crude oil were affected with the concentration of glucose (carbon source). The percentages SFA were significantly increased together with increasing of glucose level. The percentages of MUFA (C16:1 and C18:1 as main fatty acids) and PUFA were significantly decreased under high glucose concentration. Although high TUFA could lower the stability of fuel, the cultivation of P. parantarctica CHC28 under high carbon source could improve the stability of biodiesel.
{"title":"Influence of substrate concentration on microbial oil production by pseudozyma parantarctica CHC28 and its fatty acid characterization","authors":"A. Areesirisuk, C. Chiu, T. Yen, Chun‐Hung Liu, S. Pongswat, Jia Guo","doi":"10.1109/TICST.2015.7369349","DOIUrl":"https://doi.org/10.1109/TICST.2015.7369349","url":null,"abstract":"Microbial oil production by a novel oleaginous yeast Pseudozyma parantarctica CHC28 was studied using glucose as the main carbon source, in order to investigate its growth, oil production and fatty acid characterization among various glucose concentrations. Batch cultivations demonstrated that there was no significantly inhibitory effect at 100 g/L glucose. Moreover, the highest oil production and oil content of P. parantarctica CHC28 were obtained for 10.99 g/L and 49.66 %dry weight, respectively at 100 g/L glucose. During 120 and 150 g/L glucose, these values were not significantly increased. Furthermore, the fatty acid compositions of P. parantarctica CHC28 were also investigated in this study. The long-chain fatty acids (C16 to C18) were main fatty acids in all conditions, which were ranged between 86.62% and 90.79%. The short-chain fatty acids (carbon less than 14 atoms) were decreased while very long-chain fatty acid (carbon over than 20 atoms) were increased with increasing glucose level. The percentages of saturated (SFA), mono-(MUFA), poly-(PUFA), and total unsaturated fatty acid (TUFA) in crude oil were affected with the concentration of glucose (carbon source). The percentages SFA were significantly increased together with increasing of glucose level. The percentages of MUFA (C16:1 and C18:1 as main fatty acids) and PUFA were significantly decreased under high glucose concentration. Although high TUFA could lower the stability of fuel, the cultivation of P. parantarctica CHC28 under high carbon source could improve the stability of biodiesel.","PeriodicalId":251893,"journal":{"name":"2015 International Conference on Science and Technology (TICST)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127212645","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 : 2015-11-01DOI: 10.1109/ticst.2015.7369394
K. Promluang, P. Kumam
In this paper, a regularization algorithm is investigated for finding a common solution of a generalized equilibrium problem, variational inclusion of two accretive operators and fixed point problems of strictly pseudocontractive mappings. Strong convergence is obtained in Banach spaces. Our results are useful in nonlinear analysis and optimization.
{"title":"A regularization algorithm for a common solution of generalized equilibrium problem, variational inclusion and fixed point problems in Banach spaces","authors":"K. Promluang, P. Kumam","doi":"10.1109/ticst.2015.7369394","DOIUrl":"https://doi.org/10.1109/ticst.2015.7369394","url":null,"abstract":"In this paper, a regularization algorithm is investigated for finding a common solution of a generalized equilibrium problem, variational inclusion of two accretive operators and fixed point problems of strictly pseudocontractive mappings. Strong convergence is obtained in Banach spaces. Our results are useful in nonlinear analysis and optimization.","PeriodicalId":251893,"journal":{"name":"2015 International Conference on Science and Technology (TICST)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124441399","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 : 2015-11-01DOI: 10.1109/TICST.2015.7369416
P. Chinnasa, Wichaid Ponhan
The performance of Al-alloy bipolar plates for the PEMFC (proton exchange membrane fuel cell) system is investigated in this paper. The metallic bipolar plates are modified with coating carbon by spraying methods. The performance of the Al-alloy bipolar plates is evaluated by the coating structure, Interfacial contact resistance (ICR), corrosion penetration rate (CPR) and single cell performance. By the type graphite rods F, H, B, HB, 2B, 3B, and 4B Select conditions type graphite rods had lower resistance grinding mixed conductive paint. Used is a binder in coating Sprayed on the aluminum plate 6061 by had the condition in the coating substrate be 3, 6, 9 and 12 wt%. Thickness coating onto the sample and temperature using the coating different from studies ICR and CPR of the sample. The results showed factors graphite rods the type 4B had lower resistance. The aluminum plate 6061 through coating Sprayed at factor percent 9 wt% graphite the volume factor Sprayed 50 times have of results CPR 0.34348 mm/yr and results of ICR 87.67mΩcm2 a value is appropriate. The study of factors and of the temperature with substrate plate It was found that temperature to a substrate plate has very little ICR, but the results CPR of substrate can resistance corrosion at high temperatures and the temperature 50 °C have of results CPR 0.2636 mm/yr. Which are the proper conditions to apply for preparation bipolar plate metal aluminum coated carbon. The work studied the application in proton exchange membrane (PEM) fuel cells in order to generate green electric energy, demonstrating theoretical specific electric energy storage.
{"title":"Fabrication bipolar plate metal aluminum coated carbon for PEMFC","authors":"P. Chinnasa, Wichaid Ponhan","doi":"10.1109/TICST.2015.7369416","DOIUrl":"https://doi.org/10.1109/TICST.2015.7369416","url":null,"abstract":"The performance of Al-alloy bipolar plates for the PEMFC (proton exchange membrane fuel cell) system is investigated in this paper. The metallic bipolar plates are modified with coating carbon by spraying methods. The performance of the Al-alloy bipolar plates is evaluated by the coating structure, Interfacial contact resistance (ICR), corrosion penetration rate (CPR) and single cell performance. By the type graphite rods F, H, B, HB, 2B, 3B, and 4B Select conditions type graphite rods had lower resistance grinding mixed conductive paint. Used is a binder in coating Sprayed on the aluminum plate 6061 by had the condition in the coating substrate be 3, 6, 9 and 12 wt%. Thickness coating onto the sample and temperature using the coating different from studies ICR and CPR of the sample. The results showed factors graphite rods the type 4B had lower resistance. The aluminum plate 6061 through coating Sprayed at factor percent 9 wt% graphite the volume factor Sprayed 50 times have of results CPR 0.34348 mm/yr and results of ICR 87.67mΩcm2 a value is appropriate. The study of factors and of the temperature with substrate plate It was found that temperature to a substrate plate has very little ICR, but the results CPR of substrate can resistance corrosion at high temperatures and the temperature 50 °C have of results CPR 0.2636 mm/yr. Which are the proper conditions to apply for preparation bipolar plate metal aluminum coated carbon. The work studied the application in proton exchange membrane (PEM) fuel cells in order to generate green electric energy, demonstrating theoretical specific electric energy storage.","PeriodicalId":251893,"journal":{"name":"2015 International Conference on Science and Technology (TICST)","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121820630","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 : 2015-11-01DOI: 10.1109/TICST.2015.7369341
Rujee Komjaroenpompong, Chompunut Saisophon, R. Benchawattananon
The goal of this study was to determine sexual differences in palmprint in a population of Buengkan province, Thailand. This study was based on data from palmprints of 70 adult men and women, aged 15–25 years. Palmprint patterns were assessed for three different areas (interdigital, hypothenar and thenar) for all palmprints of each subject. Nineteen palmprint patterns were assessed for this population, which included Waterfall left & right, Clean delta, snow cone & side cone, Various delta, Recurves in interdigital, Loop, Half-moon, Long-short, Vestige, Long & short square nose loop, Flip area, Funnel area & down & out, Belly-out, Carpal delta (12 o'clock) & hump, Outward nose loop, 1 delta, Outward nose loop, 2 delta, Inward nose loop, Mix hypothenar, Delta shift and High carpal delta. It was obvious that Flip area was observed for male in both left palm and right palm but was not found in female. On the other hand, Long & short square nose loop and Belly-out were noted for female in both left palm and right palm.
{"title":"Sexual differences in palmprints in a population of Buengkan province, Thailand: Sexual differences in palmprints","authors":"Rujee Komjaroenpompong, Chompunut Saisophon, R. Benchawattananon","doi":"10.1109/TICST.2015.7369341","DOIUrl":"https://doi.org/10.1109/TICST.2015.7369341","url":null,"abstract":"The goal of this study was to determine sexual differences in palmprint in a population of Buengkan province, Thailand. This study was based on data from palmprints of 70 adult men and women, aged 15–25 years. Palmprint patterns were assessed for three different areas (interdigital, hypothenar and thenar) for all palmprints of each subject. Nineteen palmprint patterns were assessed for this population, which included Waterfall left & right, Clean delta, snow cone & side cone, Various delta, Recurves in interdigital, Loop, Half-moon, Long-short, Vestige, Long & short square nose loop, Flip area, Funnel area & down & out, Belly-out, Carpal delta (12 o'clock) & hump, Outward nose loop, 1 delta, Outward nose loop, 2 delta, Inward nose loop, Mix hypothenar, Delta shift and High carpal delta. It was obvious that Flip area was observed for male in both left palm and right palm but was not found in female. On the other hand, Long & short square nose loop and Belly-out were noted for female in both left palm and right palm.","PeriodicalId":251893,"journal":{"name":"2015 International Conference on Science and Technology (TICST)","volume":"186 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123043416","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 : 2015-11-01DOI: 10.1109/TICST.2015.7369348
Porak Sethakamnerd, C. Leevailoj
Purpose: To compare and evaluate the influence of material type and thickness on contrast ratio. Materials and Methods : A total of 36 disc-shaped specimens (15 mm diameter × 0.5 and 1.0 mm thicknesses) were fabricated from IPS e.max Press (n=12), Lava Plus (n=12), Lava Plus + Lava Ceram shade MO W1 (n=12). Contrast ratio was analyzed with two way ANOVA (P<;.05). Results: Contrast ratio of IPS e.max Press at 0.5 and 1.0 mm showed highest value (73.27 ± 4.37 and 87.30 ± 0.58) when compared to Lava Plus + Lava Ceram and Lava Plus groups. Higher contrast ratio significantly related to thicker material. Conclusion: Ceramic type and thickness had significant effect on contrast ratio. Contrast ratio increase as thickness increase.
目的:比较评价材料类型和厚度对对比度的影响。材料与方法:采用IPS e.max Press (n=12)、Lava Plus (n=12)、Lava Plus + Lava Ceram shade MO W1 (n=12)共制作36个圆盘状标本(直径15mm × 0.5和1.0 mm厚度)。对比分析采用双因素方差分析(P<; 0.05)。结果:与Lava Plus + Lava Ceram和Lava Plus组相比，IPS e.max Press在0.5和1.0 mm处的对比度最高，分别为73.27±4.37和87.30±0.58。对比度越高，材料越厚。结论:陶瓷类型和厚度对对比度有显著影响。对比度随着厚度的增加而增加。
{"title":"Comparison of contrast ratio of two ceramics in two different thicknesses","authors":"Porak Sethakamnerd, C. Leevailoj","doi":"10.1109/TICST.2015.7369348","DOIUrl":"https://doi.org/10.1109/TICST.2015.7369348","url":null,"abstract":"Purpose: To compare and evaluate the influence of material type and thickness on contrast ratio. Materials and Methods : A total of 36 disc-shaped specimens (15 mm diameter × 0.5 and 1.0 mm thicknesses) were fabricated from IPS e.max Press (n=12), Lava Plus (n=12), Lava Plus + Lava Ceram shade MO W1 (n=12). Contrast ratio was analyzed with two way ANOVA (P<;.05). Results: Contrast ratio of IPS e.max Press at 0.5 and 1.0 mm showed highest value (73.27 ± 4.37 and 87.30 ± 0.58) when compared to Lava Plus + Lava Ceram and Lava Plus groups. Higher contrast ratio significantly related to thicker material. Conclusion: Ceramic type and thickness had significant effect on contrast ratio. Contrast ratio increase as thickness increase.","PeriodicalId":251893,"journal":{"name":"2015 International Conference on Science and Technology (TICST)","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129999197","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 : 2015-11-01DOI: 10.1109/TICST.2015.7369361
Yuwanda Injongkol, B. Boekfa, P. Treesukol
The methane decomposition reactions catalyzed by Rh decorated carbon nanotube and by Rh decorated boron-nitride nanotube have been investigated by means of the density functional theory with the M06-L hybrid functional. In both cases, the single-step dissociative adsorption of methane are proposed. According to the activation energy, Methane decomposition on the Rh boron-nitride is preferable than that on the Rh carbon nanotube. An anionic Rh atom on boron-nitride is responsible for the lowering of activation energy of methane decomposition. Moreover, changes in electron configuration of Rh atom upon the metal support interaction can alter the mechanism significantly therefore it is worth to be further investigated in details.
{"title":"Methane dissociative reaction on Rh-decorated carbon and boron-nitride nanotubes","authors":"Yuwanda Injongkol, B. Boekfa, P. Treesukol","doi":"10.1109/TICST.2015.7369361","DOIUrl":"https://doi.org/10.1109/TICST.2015.7369361","url":null,"abstract":"The methane decomposition reactions catalyzed by Rh decorated carbon nanotube and by Rh decorated boron-nitride nanotube have been investigated by means of the density functional theory with the M06-L hybrid functional. In both cases, the single-step dissociative adsorption of methane are proposed. According to the activation energy, Methane decomposition on the Rh boron-nitride is preferable than that on the Rh carbon nanotube. An anionic Rh atom on boron-nitride is responsible for the lowering of activation energy of methane decomposition. Moreover, changes in electron configuration of Rh atom upon the metal support interaction can alter the mechanism significantly therefore it is worth to be further investigated in details.","PeriodicalId":251893,"journal":{"name":"2015 International Conference on Science and Technology (TICST)","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124643730","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 : 2015-11-01DOI: 10.1109/TICST.2015.7369405
P. Kessaratikoon, N. Choosiri, R. Boonkrongcheep, M. Daoh, S. Udomsomporn
The frequency distribution of specific activities of natural (40K, 226Ra and 232Th) and anthropogenic (137Cs) radionuclides in 50 surface beach sand samples collected from Sakom beach in Thepha district Songkhla province (Thailand), have been studied and analyzed after the Fukushima Nuclear Power Plant Accident in Japan. It was found that the frequency distribution of specific activities of 40K, 226Ra, 232Th and 137Cs for Sakom beach was asymmetrical distribution with the skewness of 0.13, 1.20, 2.00 and 1.49, respectively. The median values of 40K, 226Ra, 232Th and 137Cs were 1028.92 ± 130.68 Bq/kg, 31.53 ± 3.18 Bq/kg, 24.98 ± 2.00 Bq/kg and 2.32 ± 0.69 Bq/kg. Furthermore, the median values of specific activities of 40K, 226Ra and 232Th were also used to evaluate four radiological hazard indices which are gamma absorbed dose rate (D), radium equivalent activity (Raeq), external hazard index (Hex) and annual external effective dose rate (AEDout) for the study area. The results were also compared with the Office of Atoms for Peace (OAP) annual report data, Thailand and global radioactivity measurement and evaluations. Moreover, the radioactive contour maps of the investigated area were also created and presented in this paper.
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