Suan Sunandha Rajabhat University Journal of Science and Technology最新文献_第5页

Stretchability and Deformation Behavior of Polybutylene Adipate-co-terephthalate Blend Films 聚己二酸丁二酯-对苯二甲酸酯共混薄膜的拉伸性能和变形行为

Suan Sunandha Rajabhat University Journal of Science and Technology Pub Date : 2022-07-04 DOI: 10.53848/ssstj.v9i2.230

Korawit Kaoudom, S. Suttiruengwong, M. Seadan

{"title":"Stretchability and Deformation Behavior of Polybutylene Adipate-co-terephthalate Blend Films","authors":"Korawit Kaoudom, S. Suttiruengwong, M. Seadan","doi":"10.53848/ssstj.v9i2.230","DOIUrl":"https://doi.org/10.53848/ssstj.v9i2.230","url":null,"abstract":"The single use packaging is widely used in various products; ranging from food to non-food contact, from commodity to specialty purposes. Most of these materials are derived from non-renewable fossil resources. In a sustainable manner, it needs to be recyclable or compostable. Good mechanical properties together with biodegradability can make the product more recyclable. In this study, the elasticity for films consisting of polybutylene adipate-co-terephthalate (PBAT) blended with polylactic acid (PLA) (10, and 20 %wt), additive and reactive agents were evaluated. The blends were prepared via a twin-screw extruder. The film specimens were prepared by cast film extrusion. The films were then stretched with different ratios (1.5, 2 and 2.5 times) by the uniaxial machine. The mechanical properties, elasticities and surface morphology of uniaxially stretched PBAT and PBAT blend films were characterized by tensile testing and scanning electron microscope (SEM), respectively. The tensile strength of stretched films tended to improve while the elongation at break reduced at higher stretching ratios. The surface morphology of stretched films revealed that the degree of orientation was increased after higher stretching ratios. The ability to recover in the plastic deformation region of stretched films was increased at the higher stretching ratios.","PeriodicalId":31349,"journal":{"name":"Suan Sunandha Rajabhat University Journal of Science and Technology","volume":"57 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90949180","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

ปัจจัยพยากรณ์การใช้สมุนไพรพื้นบ้านของผู้สูงอายุ ชุมชนสะลวง – ขี้เหล็ก อำเภอแม่ริม จังหวัดเชียงใหม่ 泰国清迈母亲林地区老年人使用草药的预测因素

Suan Sunandha Rajabhat University Journal of Science and Technology Pub Date : 2021-12-22 DOI: 10.53848/irdssru.v13i2.250372

สามารถ ใจเตี้ย, ศศิกัญญ์ ผ่องชมพู, วิทญา ตันอารีย์, เอกลักษ์ ชมพูศรี

{"title":"ปัจจัยพยากรณ์การใช้สมุนไพรพื้นบ้านของผู้สูงอายุ ชุมชนสะลวง – ขี้เหล็ก อำเภอแม่ริม จังหวัดเชียงใหม่","authors":"สามารถ ใจเตี้ย, ศศิกัญญ์ ผ่องชมพู, วิทญา ตันอารีย์, เอกลักษ์ ชมพูศรี","doi":"10.53848/irdssru.v13i2.250372","DOIUrl":"https://doi.org/10.53848/irdssru.v13i2.250372","url":null,"abstract":"การวิจัยเชิงผสมผสานนี้ศึกษาการใช้สมุนไพรพื้นบ้านของผู้สูงอายุ และพยากรณ์ปัจจัยที่มีอิทธิพลต่อการใช้สมุนไพรพื้นบ้านของผู้สูงอายุ กลุ่มตัวอย่างเป็นผู้สูงอายุที่มีอายุระหว่าง 60 – 95 ปี ในชุมชนสะลวง – ขี้เหล็ก อำเภอแม่ริม จังหวัดเชียงใหม่ จำนวน 177 คน และผู้มีส่วนได้ส่วนเสีย จำนวน 8 คน รวมรวบข้อมูลโดยแบบสอบถาม และการสัมภาษณ์แบบไม่เป็นทางการ วิเคราะห์ข้อมูลด้วย สถิติเชิงพรรณนา การวิเคราะห์การถดถอยเชิงเส้นพหุคูณ และการวิเคราะห์เชิงเนื้อหา ผลการศึกษา พบว่า ผู้สูงอายุมีการใช้สมุนไพรพื้นบ้านโดยรวมระดับน้อย (ค่าเฉลี่ยเท่ากับ 1.98) และเมื่อวิเคราะห์อำนาจการพยากรณ์การใช้สมุนไพรพื้นบ้านของผู้สูงอายุ มีตัวแปรที่สามารถอธิบายความผันแปรการใช้สมุนไพรพื้นบ้านของผู้สูงอายุ 2 ตัวแปรย่อย ได้แก่ อายุ และการรับรู้ประโยชน์สมุนไพรพื้นบ้าน โดยร่วมกันพยากรณ์การใช้สมุนไพรพื้นบ้านของผู้สูงอายุได้ร้อยละ 42.4 อย่างมีนัยสำคัญทางสถิติที่ 0.05 ทั้งนี้ควรส่งเสริมความรู้ทางวิชาการที่ถูกต้องเกี่ยวกับการใช้สมุนไพรในผู้สูงอายุ","PeriodicalId":31349,"journal":{"name":"Suan Sunandha Rajabhat University Journal of Science and Technology","volume":"63 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73737027","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: 0

แนวทางการพัฒนาการจัดการการท่องเที่ยวบริเวณเขื่อนประเทศไทย 泰国大坝旅游管理的发展方向

Suan Sunandha Rajabhat University Journal of Science and Technology Pub Date : 2021-12-22 DOI: 10.53848/irdssru.v13i2.250196

ไพริน เวชธัญญะกุล, ธัญชนก บุญเจือ

引用次数: 0

การเปรียบเทียบผลสัมฤทธิ์ทักษะการฟังภาษาอังกฤษเพื่อความเข้าใจ ของนักเรียนชั้นมัธยมศึกษาปีที่ 4 โรงเรียนสตรีนนทบุรี ระหว่างกลุ่มที่จัดการเรียนการสอนแบบร่วมมือ และกลุ่มที่จัดการเรียนการสอนแบบปกติ 四年级学生的英语听力理解能力比较:Nanthaburi，协作教学小组和常规教学小组。

Suan Sunandha Rajabhat University Journal of Science and Technology Pub Date : 2021-12-22 DOI: 10.53848/irdssru.v13i2.250348

ณัฐกตา เลิศธนะธาดา, วิภาดา ประสารทรัพย์

引用次数: 0

Assessment of Human’s Attitude Towards Natural Resource Conservation in Protected Area in Thailand 泰国保护区自然资源保护的人类态度评价

Suan Sunandha Rajabhat University Journal of Science and Technology Pub Date : 2015-07-01 DOI: 10.14456/SSSTJ.2015.4

Ananya Popradit, Atsushi Ishida, T. Murayama, T. Srisatit, T. Utarasakul, S. Kiratiprayoon, Roj Khun Anake, Somkid Outtaranakorn

{"title":"Assessment of Human’s Attitude Towards Natural Resource Conservation in Protected Area in Thailand","authors":"Ananya Popradit, Atsushi Ishida, T. Murayama, T. Srisatit, T. Utarasakul, S. Kiratiprayoon, Roj Khun Anake, Somkid Outtaranakorn","doi":"10.14456/SSSTJ.2015.4","DOIUrl":"https://doi.org/10.14456/SSSTJ.2015.4","url":null,"abstract":"Attitude of residing people towards a protected forest area was evaluated for sustainable use of natural resources and forest conservation in the Phu Kao–PhuPhan Kham National Park in Thailand. Their economic and social conditions were assessed in three villages of Phukao, NongBua Lamphu Province. Data were collected from 348 households (66.5%) heads or the representatives in the villages with the questionnaire. The questionnaire consisted of three parts: (i) general economic and social information (ii) social grouping and participation and (iii) attitude toward participation in conserving natural resources and tourism management in this area. To evaluate their attitude, the collected data were divided into four categories: (i) level 4 equilibrium/nature (ii) level 3 warning (iii) level 2 risk (iv) level 1 crisis for forest conservation in the protected area. Overall, their attitude towards natural resource conservation, the social grouping and the community participation was very low. However, the attitude towards ecotourism is very high. We suggest that forest conservation will be maintained by more progress of ecotourism in this area.","PeriodicalId":31349,"journal":{"name":"Suan Sunandha Rajabhat University Journal of Science and Technology","volume":"2 1","pages":"18-23"},"PeriodicalIF":0.0,"publicationDate":"2015-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66677374","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: 9

The Health Effects of Computer Use on Personnel at the Suan Sunandha Rajabhat University Suan Sunandha Rajabhat大学人员使用电脑对健康的影响

Suan Sunandha Rajabhat University Journal of Science and Technology Pub Date : 2015-07-01 DOI: 10.14456/SSSTJ.2015.3

Rujijan Vichivanives, Wanwimon Mekwimon

{"title":"The Health Effects of Computer Use on Personnel at the Suan Sunandha Rajabhat University","authors":"Rujijan Vichivanives, Wanwimon Mekwimon","doi":"10.14456/SSSTJ.2015.3","DOIUrl":"https://doi.org/10.14456/SSSTJ.2015.3","url":null,"abstract":"This survey research aimed to find the health effects of computer use on Suan Sunandha Rajabhat University’s personnel. A total of 312 samples were selected out of 1401 population by simple random method. Inferential statistics were used throughout the hypothesis testing and data analysis (percentage, mean and standard deviation). The correlation between risk factors and computer-used behavior were calculated by Pearson correlation and Creamer’s V coefficient (95% CI). The results indicated that the samples spend 6-10 hours of the workday on the computer. In order to create a good working environment, the organization has provided good computing facilities. The overview of computer-used behavior suggests that the personnel have regular good practice, i.e. 5-6 times per week. The research result found that the most of personnel have a regular eyestrain, eye fatigue, sore eyes and irritation symptoms at least 5-6 times per week. In addition, the personnel have regular neck, shoulder, back, waist and wrist pain symptoms at least 3-4 times per week. The result indicated that the computer user’s behavior and user’s health status relate to each other, and are in the same way. In conclusion, the academic staff requires the basic computer usage knowledge in order to avoid future health problems.","PeriodicalId":31349,"journal":{"name":"Suan Sunandha Rajabhat University Journal of Science and Technology","volume":"02 1","pages":"13-17"},"PeriodicalIF":0.0,"publicationDate":"2015-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66677363","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: 0

GIS Application in Urban Traffic Air Pollution Exposure Study: A Research Review GIS在城市交通空气污染暴露研究中的应用研究综述

Suan Sunandha Rajabhat University Journal of Science and Technology Pub Date : 2015-01-01 DOI: 10.14456/SSSTJ.2015.10

Amrit Kumar, R. Mishra, S. K. Singh

{"title":"GIS Application in Urban Traffic Air Pollution Exposure Study: A Research Review","authors":"Amrit Kumar, R. Mishra, S. K. Singh","doi":"10.14456/SSSTJ.2015.10","DOIUrl":"https://doi.org/10.14456/SSSTJ.2015.10","url":null,"abstract":"Vol. 2 No. 1January 2015 © 2015 Faculty of Science and Technology, Suan Sunandha Rajabhat University GIS Application in Urban Traffic Air Pollution Exposure Study: A Research Review Amrit Kumar, Rajeev Kumar Mishra and S. K. Singh Department of Environmental Engineering, Delhi Technological University, Delhi-110042, India *Corresponding Author: rajeevmishraiitr@gmail.com Abstract: This paper reports a preliminary study of the evaluation and forecast of transport-related air pollution dispersion in urban areas with the help of Geographic Information System (GIS) platform and a simulative system with graphical interface. The urban population growth, economic development, energy consumption, growing transportation demand and living standards play major role in pollution exposure in atmosphere. A lot of research has already been done to investigate the functional relationship between air quality and air pollution from transport. This study is an effort to develop a more flexible framework of model to find the exposure of the air pollution in the atmosphere. This review article describes the development of framework of different GIS inputs that help to find the exposure of vehicular pollution in megacity.","PeriodicalId":31349,"journal":{"name":"Suan Sunandha Rajabhat University Journal of Science and Technology","volume":"2 1","pages":"25-37"},"PeriodicalIF":0.0,"publicationDate":"2015-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66676966","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: 13