King Mongkut’s University of Technology North Bangkok International Journal of Applied Science and Technology最新文献_第5页

Environmentally-Friendly RF Plasma Treatment of Thai Silk Fabrics with Chitosan for Antibacterial Property 环境友好型射频等离子体处理泰国真丝织物的抗菌性能

King Mongkut’s University of Technology North Bangkok International Journal of Applied Science and Technology Pub Date : 2016-04-08 DOI: 10.14416/J.IJAST.2016.02.002

Wijittra Wongjaikham, D. Wongsawaeng, N. Somboonna

引用次数: 0

Evaluation of the Possibility for Using Polypropylene/Graphene Composite as Bipolar Plate Material Instead of Polypropylene/Graphite Composite 聚丙烯/石墨烯复合材料替代聚丙烯/石墨复合材料作为双极板材料的可能性评价

King Mongkut’s University of Technology North Bangkok International Journal of Applied Science and Technology Pub Date : 2016-03-23 DOI: 10.14416/J.IJAST.2016.02.003

Kannika Onyu, R. Yeetsorn, M. Fowler, A. Yu, Yun-Seok Jun, Chaiwat Prapainainar, W. Prissanaroon-Ouajai

{"title":"Evaluation of the Possibility for Using Polypropylene/Graphene Composite as Bipolar Plate Material Instead of Polypropylene/Graphite Composite","authors":"Kannika Onyu, R. Yeetsorn, M. Fowler, A. Yu, Yun-Seok Jun, Chaiwat Prapainainar, W. Prissanaroon-Ouajai","doi":"10.14416/J.IJAST.2016.02.003","DOIUrl":"https://doi.org/10.14416/J.IJAST.2016.02.003","url":null,"abstract":"To reduce the bipolar plate weight and keep the desired power density of a low temperature fuel cell, thermoplastic composite bipolar plates have been fabricated for low temperature fuel cell applications. Concerns over material weight, electrical conductivity, mechanical properties, and injection processability of the thermoplastic nanocomposites have brought forth the idea of producing a polypropylene/graphene nanocomposite for an injection moulded bipolar plate application. In this article, the properties of produced polypropylene/graphene nanocomposites were also compared with the properties of polypropylene/graphite composites to assess the feasibility for using polypropylene/graphene nanocomposites as a bipolar plate material. The effects of graphene contents and sizes on electrical conductivity and mechanical properties were reported in this work. Moreover, the obtained results were discussed in terms of morphology and state of dispersion and distribution of the graphene within the polypropylene matrix. This work is a preliminary study that offers insight into the material selection and development for low temperature fuel cells toward the ultimate goal of broad commercialization.","PeriodicalId":352801,"journal":{"name":"King Mongkut’s University of Technology North Bangkok International Journal of Applied Science and Technology","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134046763","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 8

Further Development on Joining of Metal and Fibre Components Using Semi-solid Forming Technology 半固态成形技术在金属与纤维件连接中的进一步发展

King Mongkut’s University of Technology North Bangkok International Journal of Applied Science and Technology Pub Date : 2016-03-23 DOI: 10.14416/J.IJAST.2016.01.003

M. Liewald, L. Marx

引用次数: 1

Experimental Study of the Effect of Water Depth on the Productivity of Double Basin Solar Stills in Seawater Desalination 水深对海水淡化双盆太阳能蒸馏器生产效率影响的实验研究

King Mongkut’s University of Technology North Bangkok International Journal of Applied Science and Technology Pub Date : 2016-01-25 DOI: 10.14416/j.ijast.2015.12.004

C. Phukapak, Sorawin Phukapak

{"title":"Experimental Study of the Effect of Water Depth on the Productivity of Double Basin Solar Stills in Seawater Desalination","authors":"C. Phukapak, Sorawin Phukapak","doi":"10.14416/j.ijast.2015.12.004","DOIUrl":"https://doi.org/10.14416/j.ijast.2015.12.004","url":null,"abstract":"This research article studied the experimental of the effect of water depth on the productivity of double basin solar stills in seawater desalination. The experiment was carried out with the water depths at 1, 2, 3, 4 and 5 cm in order to obtain the appropriate water depth for purified water production during the day and at night and to analyze its efficiency. The study’s results revealed that the basin single and double slope solar stills at the water depth of 1 cm produced the maximum purified water at 2,285 ml/day and 2,620 ml/day, respectively. During the day, the production rates of purified water were 1,628 ml/day and 1,869 ml/day. At night, the production rates were 657 ml/day and 751 ml/day, respectively. The efficiency was 24.46% and 28.04%. However, at the water depth of 5 cm, the lowest purified water production rates were 1,044 ml/day and 1,389 ml/day. During the day, the production rates were 744 ml/day and 989 ml/day while at night it was produced 300 ml/day and 400 ml/day, respectively. The efficiency was 11.42% and 15.19%. The lower water depth provides better productivity than the higher water depth since the surface of water is less, so it is able to accumulate higher thermal energy obtained from the transmission of heat from the sun until it reaches the latent heat of vaporization and it evaporates into the glass surface. Then the condensation is fast made, so it provides a long period of desalination. This results in more production rate.","PeriodicalId":352801,"journal":{"name":"King Mongkut’s University of Technology North Bangkok International Journal of Applied Science and Technology","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126614138","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

CFD Simulation of Molten Steel Flow with Isothermal Condition in the Continuous Casting Tundish 连铸中间包等温条件下钢液流动的CFD模拟

King Mongkut’s University of Technology North Bangkok International Journal of Applied Science and Technology Pub Date : 2016-01-25 DOI: 10.14416/j.ijast.2015.12.003

P. Kowitwarangkul, Maitri Kamonrattanapisud, E. Juntasaro, Deedeach Sukam

引用次数: 6

Numerical Implementation of Energy-based Models in Explicit Finite Element Analysis for Sand in Plane Strain Compression 砂土平面应变压缩显式有限元分析中基于能量模型的数值实现

King Mongkut’s University of Technology North Bangkok International Journal of Applied Science and Technology Pub Date : 2016-01-25 DOI: 10.14416/j.ijast.2016.01.001

P. Chattonjai

引用次数: 1

Investigation of Using Beijing Grass Extract as a Natural Antioxidant in Edible Oil 北京草提取物作为食用油天然抗氧化剂的研究

King Mongkut’s University of Technology North Bangkok International Journal of Applied Science and Technology Pub Date : 2016-01-25 DOI: 10.14416/j.ijast.2015.12.002

Ketinun Kittipongpittaya, W. Rungjang, Sukarnda Klomlab

{"title":"Investigation of Using Beijing Grass Extract as a Natural Antioxidant in Edible Oil","authors":"Ketinun Kittipongpittaya, W. Rungjang, Sukarnda Klomlab","doi":"10.14416/j.ijast.2015.12.002","DOIUrl":"https://doi.org/10.14416/j.ijast.2015.12.002","url":null,"abstract":"Beijing grass [ Murdannia loriformis (Hassk) Rolla Rao et Kammathy] has been widely used as a Thai medicinal plant. In this study, the antioxidant activity of the ethanolic extract of Beijing grass was evaluated using the DPPH assay. Furthermore, the extract was added into soybean oil and pork lard, which were incubated at 75°C for 14 days. Peroxide value and color of the oil were determined during the storage in order to screen suitability of the extract as a natural antioxidant in edible oil. The antioxidant activity of the Beijing grass extract at 200, 400, 600 and 800 ppm were 60.38, 70.13, 85.38 and 87.29%, respectively according to the DPPH assay. Protection factor was calculated to show a relative increase of the induction period of lipid oxidation due to the addition of antioxidant. The protection factors of the Beijing grass extract in pork lard at 200, 400, 600 and 800 ppm were 1.4, 1.6, 1.6, and 1.6, respectively. This suggested that the extract helped increase oxidative stability of the oil compared to the control without antioxidant. However, antioxidant efficiency of the Beijing grass extract was relatively low compared to synthetic antioxidant BHT which possessed the protection factor of 3.3. The same trend was observed in soybean oil in the way that Beijing grass extract at 200, 400, 600 and 800 ppm showed protection factor of 1.2, 1.2, 1.2, and 1.3, respectively. TBHQ, a synthetic antioxidant, again exhibited significantly higher antioxidant activity compared to the Beijing extract in soybean oil. Measuring the Hunter L , a , b values of the oil suggested that the Beijing extract caused the oil lightness to decrease, while the greenness and blueness increased. In conclusion, the Beijing grass extract showed great potential as an effective natural antioxidant to protect edible oil from lipid oxidation. However, the impact of the extract on the color of the oil is still a great concern that needs to be further investigated.","PeriodicalId":352801,"journal":{"name":"King Mongkut’s University of Technology North Bangkok International Journal of Applied Science and Technology","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130627655","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Nutrition Composition and Analysis of Medicinal Herbal Potential of Horsfieldia glabra Warb. Seeds 光天马的营养成分及药用潜力分析。种子

King Mongkut’s University of Technology North Bangkok International Journal of Applied Science and Technology Pub Date : 2016-01-04 DOI: 10.14416/j.ijast.2015.12.001

N. Chaichana

{"title":"Nutrition Composition and Analysis of Medicinal Herbal Potential of Horsfieldia glabra Warb. Seeds","authors":"N. Chaichana","doi":"10.14416/j.ijast.2015.12.001","DOIUrl":"https://doi.org/10.14416/j.ijast.2015.12.001","url":null,"abstract":"Horsfieldia glabra Warb. is a locally consumed plant indigenous to Chiang Rai Province, Thailand and of late, there has been considerable interest in evaluating its health benefits. The aim of this study was to investigate H. glabra Warb. seeds in order to assess their nutritional properties and its potential as a medicinal herb. In terms of nutritional assessment, the experiment found that H. glabra Warb. seed extract contained 68.24 g per 100 g dry weight of lipids, 7.80 g per 100 g dry weight of protein, 14.20 g per 100 g dry weight of carbohydrates, 5.04 g per 100 g dry weight of crude fiber, 1.41 g per 100 g dry weight of ash and 6.827 kcal per 1 g dry weight of energy. The analysis of its potential as a medicinal herbal determined the antioxidant activity and Minimum Inhibitory Concentration (MIC) of Staphylococcus aureus , Pseudomonas aeruginosa and Escherichia coli . The results revealed that H. glabra Warb. seed extraction displayed antioxidant activity (62.01 ± 3.99% DPPH inhibition activity) with a IC50 value of 0.358 ± 0.02 mg/ml. Experiments investigating MIC determined that the extract exhibited the minimum inhibitory concentration of S. aureus (15.625 mg/ml) with 8.00 ± 1.73 mm clear zone. Whereas Streptomycin concentration of 30 mg/ml inhibited 9.00 ± 2.00 mm clear zone. GC-MS analysis of H. glabra Warb. seeds determined that the major compounds were α -resorcinol (40.769%) and 4-vinylphenol (23.761%).","PeriodicalId":352801,"journal":{"name":"King Mongkut’s University of Technology North Bangkok International Journal of Applied Science and Technology","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124373911","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

Filtering Test Case Selection for Increasing the Performance of Regression Testing 过滤测试用例选择以提高回归测试的性能

King Mongkut’s University of Technology North Bangkok International Journal of Applied Science and Technology Pub Date : 2016-01-04 DOI: 10.14416/j.ijast.2015.11.002

A. Lawanna

引用次数: 6

Induction Welding of Hybrid Thermoplastic-thermoset Composite Parts 热塑性-热固性复合材料杂化件的感应焊接

King Mongkut’s University of Technology North Bangkok International Journal of Applied Science and Technology Pub Date : 2015-12-22 DOI: 10.14416/j.ijast.2015.10.005

Oliver Schieler, U. Beier

引用次数: 25