bluuebunny/crossref_metadata_2025 huggingface dataset:
การตกเป็นเหยื่อทางไซเบอร์ของผู้สูงอายุ
Authors:   , สามารถ ธัญพิชชา
Published: September 2023

การศึกษานี้มีวัตถุประสงค์เพื่อศึกษารูปแบบการตกเป็นเหยื่อของการหลอกลวงทางไซเบอร์ ปัจจัยที่ทำให้ผู้สูงอายุตกเป็นเหยื่อของการหลอกลวงทางไซเบอร์ และเพื่อเสนอแนะแนวทางการแก้ไขการตกเป็นเหยื่อการหลอกลวงทางไซเบอร์ของผู้สูงอายุ การวิจัยครั้งนี้เป็นการวิจัยเชิงคุณภาพ (Qualitative Research) โดยการสัมภาษณ์เชิงลึกกับกลุ่มตัวอย่างผู้สูงอายุที่ตกเป็นเหยื่อการหลอกลวงทางไซเบอร์จำนวน 24 คน ผู้มีส่วนในการหลอกลวงจำนวน 5 คน และเจ้าหน้าที่และนักวิชาการที่เกี่ยวข้องกับการช่วยเหลือหรือการป้องกันผู้สูงอายุจากการถูกหลอกลวงทางไซเบอร์จำนวน 9 คน ผลการวิจัยแบ่งกลุ่มผู้สูงอายุที่ถูกหลอกลวง
ทางไซเบอร์ 4 กลุ่ม แต่ละกลุ่มมีรูปแบบและปัจจัยที่ทำให้ตกเป็นเหยื่อของการหลอกลวงแตกต่างกัน คือ 1)ผู้ที่ตกเป็นเหยื่อการหลอกลวงให้ลงทุน มีรูปแบบการถูกหลอกลวงโดยส่วนใหญ่ถูกชักชวนจากบุคคลที่รู้จักในกลุ่มไลน์ที่เคยลงทุนด้วยกัน หรือพบเห็นโฆษณาเชิญชวนบนสื่อสังคมออนไลน์ โดยมีลักษณะของผลตอบแทนที่สูงเป็นสิ่งจูงใจ มีทั้งการให้ค่าตอบแทนจากการแนะนำสมาชิกใหม่ และไม่มีการให้ค่าตอบแทน ซึ่งผู้ที่มีส่วนในการหลอกลวงเป็นทั้งบุคคลธรรมดา และอยู่ในรูปแบบบริษัทจดทะเบียน ปัจจัยที่ส่งผลต่อการตกเป็นเหยื่อพบว่ามี 8 ปัจจัย คือ ด้านเศรษฐกิจ ด้านความโลภ ด้านเทคโนโลยี ด้านการสร้างความน่าเชื่อถือของผู้หลอกลวง ด้านความรู้ความเข้าใจในการลงทุน ด้านสภาพความเป็นอยู่ ด้านการชักชวนให้ลงทุนจากญาติหรือคนรู้จัก และด้านความเชื่อมั่นใจตนเอง 2)ผู้ที่ตกเป็นเหยื่อการหลอกลวงจากแก๊งคอลเซนเตอร์ มีรูปแบบการหลอกลวงในการสร้างความตกใจกลัว หรือเกิดความโลภ และมีระยะเวลาในการให้ตัดสินใจจำกัด ปัจจัยที่ส่งผลต่อการตกเป็นเหยื่อพบว่า มี 4 ปัจจัย คือ ด้านความกลัว ด้านความโลภ ด้านความไม่คุ้นเคยกับเทคโนโลยี และด้านการอยู่เพียงลำพังขณะเกิดเหตุ 3)ผู้ที่ตกเป็นเหยื่อการซื้อสินค้าออนไลน์ ผู้หลอกลวงจะสร้างโพรไฟล์ให้ดูมีความน่าเชื่อถือ เปิดร้านขายบนสื่อสังคมออนไลน์ และขายผ่านตลาดกลางออนไลน์เพื่อสร้างความน่าเชื่อถือ สินค้าที่หลอกลวงมักจะเป็นสินค้าที่ราคาไม่สูงนัก หรือเป็นสินค้าที่มีราคาถูกกว่าท้องตลาดทั่วไป ปัจจัยที่ส่งผลต่อการตกเป็นเหยื่อพบว่ามี  3 ปัจจัยคือ ความไว้วางใจร้านค้าออนไลน์โดยไม่ได้ตรวจสอบ การส่งเสริมการขายที่ผิดปกติ และราคาสินค้าที่มีราคาไม่สูง 4)ผู้สูงอายุที่ตกเป็นเหยื่อการหลอกให้รักทางออนไลน์ มีรูปแบบการใช้จิตวิทยาในการหลอกลวง สร้างความสัมพันธ์ที่ดีและใช้ระยะเวลาในการสร้างความไว้วางใจ เลือกเหยื่อจากการดูโพรไฟล์บนสื่อสังคมออนไลน์ ปัจจัยที่ส่งผลต่อการตกเป็นเหยื่อพบว่ามี 4 ปัจจัย คือ ความรักความหลง ความน่าเชื่อถือ ด้านความเหงา และความอายของผู้ที่ถูกหลอก โดยการหลอกลวงทั้ง 4 รูปแบบมีปัจจัยร่วมกันคือ ความรู้ไม่เท่าทันการหลอกลวง สำหรับแนวทางการแก้ไขการตกเป็นเหยื่อ ได้แก่ การสร้างความตระหนักให้กับผู้สูงอายุในการรู้เท่าทันถึงรูปแบบการหลอกลวงทางไซเบอร์ การระมัดระวังการเปิดเผยข้อมูลส่วนตัวผู้อื่นที่ไม่รู้จัก การให้คำปรึกษาในกลุ่มของครอบครัว การจัดตั้งเครือข่ายกลุ่มผู้สูงอายุเพื่อเผยแพร่ข่าวสารการหลอกลวงทางไซเบอร์ ความร่วมมือของภาคเอกชนผู้ให้บริการเครือข่ายโทรศัพท์เคลื่อนที่ในการปิดกันช่องทางการหลอกลวงจากผู้หลอกลวง ตลอดจนหน่วยงานของรัฐในการออกมาตรการทางกฎหมายตลอดจนการบังคับใช้อย่างเคร่งครัด
ผู้ก่อการร้ายหญิง : ปัญหาและแนวทางการแก้ไข
Authors:   , จันทบูรณ์ พิมพ์ชนก
Published: September 2023

การศึกษาเรื่อง ผู้ก่อการร้ายหญิง : ปัญหาและแนวทางการแก้ไข เป็นการวิจัยเชิงคุณภาพ มีวัตถุประสงค์เพื่อศึกษามูลเหตุ จูงใจ บทบาท และกระบวนการในการที่ผู้หญิงเข้าไปมีส่วนร่วมในการก่อการร้าย ตลอดจนแสวงหาแนวทางในการป้องกันและแก้ไขปัญหา

ผลจากการวิจัยพบว่า มูลเหตุจูงใจในการก่อการร้ายของผู้หญิงสามารถแบ่งเป็นสองส่วนหลัก ได้แก่ ส่วนที่เป็นปัจจัยดึงดูด อันเป็นปัจจัยจากฝั่งกลุ่มก่อการร้าย ได้แก่ กระบวนการชักชวนและจัดหาที่มีประสิทธิภาพ ประกอบกับความมีบารมีและความดึงดูดของผู้นำกลุ่มก่อการร้ายและส่วนที่เป็นปัจจัยผลักดัน อันเป็นปัจจัยที่มาจากแรงกระตุ้นของฝั่งผู้หญิงเอง ได้แก่ อารมณ์ส่วนตัว ศาสนา และการเมือง จนนำไปสู่การเข้าสู่กระบวนการโดยสมัครใจเพื่อไปมีส่วนร่วมในการก่อการร้าย โดยในต่างประเทศผู้หญิงมีทั้งบทบาทหลักในการก่อเหตุ และบทบาทสนับสนุน อาทิ การทำหน้าที่เป็นแม่ ภรรยา และจัดหาสมาชิก เป็นต้น ซึ่งมักถูกชักจูงผ่านช่องทางออนไลน์เป็นหลัก ขณะที่บางส่วนที่ไม่สมัครใจก็จะตกเป็นเหยื่อเพื่อแสวงประโยชน์ของกลุ่มก่อการร้าย ในส่วนของประเทศไทยนั้น การก่อการร้ายถูกชี้นำไปในพื้นที่จังหวัดชายแดนภาคใต้ ซึ่งผู้หญิงจะมีบทบาทในการสนับสนุนกลุ่มก่อความไม่สงบ อาทิ การทำหน้าที่ปฐมพยาบาล และการหารายได้ เป็นต้น โดยถูกชักจูงจากคนในครอบครัวและคนใกล้ตัว ประกอบกับการซึมซับข้อมูลและเรื่องเล่าต่าง ๆ ผ่านประสบการณ์จากการอาศัยอยู่ในพื้นที่เป็นเวลานาน

และเนื่องจากผู้หญิงเข้าไปมีส่วนร่วมในการก่อการร้ายในบทบาทต่าง ๆ อันเป็นฟันเฟืองหนึ่งที่ขับเคลื่อนให้เกิดการก่อการร้ายในหลายพื้นที่ทั่วโลก ประชาคมระหว่างประเทศรวมทั้งประเทศไทยจึงได้มีการกำหนดนโยบายที่เกี่ยวข้องในการต่อต้านการก่อการร้ายทั้งในภาพรวมและในมิติของผู้หญิงในการก่อการร้ายเป็นการเฉพาะ อย่างไรก็ดี ยังพบว่าหลายประเทศทั่วโลกยังคงเผชิญกับภัยคุกคามจากการก่อการร้ายจวบจนปัจจุบัน เช่นเดียวกับประเทศไทยที่ปัญหาการก่อความไม่สงบในจังหวัดชายแดนภาคใต้ยังคงดำเนินต่อเนื่องเรื่อยมาหลายทศวรรษ ผู้วิจัยจึงได้เสนอแนะให้มีการปรับปรุงนโยบาย การเพิ่มมาตรการป้องกันในระดับปฏิบัติ ตลอดจนการนำทฤษฎีทางอาชญาวิทยาและแนวทางการป้องกันจากต่างประเทศที่ได้ศึกษาไว้ มาเป็นกรอบในการจัดทำแนวทางในการป้องกันและแก้ไขทั้งในระดับนโยบายและระดับปฏิบัติการที่สอดคล้องกับบริบทของไทย
Link prediction using deep learning approach for type 2 diabetes drug repurposing
Authors:   , Mam Sothornin
Published: September 2023

There is still no effective treatment for type 2 diabetes, which has been on the rise for years. By repositioning current medications for new indications, drug repurposing can aid in the discovery of novel medications. Deep learning has recently been applied to this problem via link prediction utilizing a graph representation that learns from either the structure of a graph or the semantic meaning of entity text. However, because they used a single representation as the basis for their work without making any model improvements, earlier attempts still had restricted performance. In this study, we suggest a new deep-learning approach for the drug repurposing of entities associated with type 2 diabetes. Transformer, a current deep learning network, serves as the foundation of our model's architecture. Regarding our link prediction in the graph, each entity is embedded utilizing both (1) structural information embedded from the node and its neighbor nodes and (2) semantic information retrieved from its name and descriptions. The experiment was conducted using type 2 diabetes data gathered from PubMed and UMLS Metathesaurus. The findings demonstrated that our combined model can outperform other models that only contain a single module, i.e. StAR and HittER, by exhibiting an increase of 77.17% on the mean reciprocal rank score for the drug discovery task. Finally, using the model for drug repurposing, we can identify several medications that may be employed to treat type 2 diabetes.
Digital reading on EIL materials for Thai undergraduate students
Authors:   , Adungdejjaroon Nopphanan
Published: September 2023

This exploratory study had two research objectives. First, it aimed to investigate digital reading on EIL materials for Thai undergraduate students and, second, explore students' perceptions towards digital reading on EIL materials. The study involved two hundred and ninety-nine undergraduate students enrolled in an aviation business management program. The EIL Digital Reading Questionnaire is to collect quantitative data, while the semi-structured interview is to collect qualitative data. The result from descriptive statistics of the questionnaire and thematic analysis of the semi-interview reported that Thai undergraduate students tended to encounter, engage, and evaluate EIL materials frequently. Most of the participants strongly agreed on perceiving the use of these EIL digital reading strategies, including encountering, engaging, and evaluating. Furthermore, the implications of the findings were applied to develop and suggest materials for aviation business management instructional practices with a focus on English as an International Language digital reading.
Effects of the writing instructional model with integration of inquiry-based learning and visual literacy on 21st century skills of EFL learners
Authors:   , Sukserm Patsawut
Published: September 2023

Although a body of research illustrates the potential of inquiry-based learning in promoting the 21st century skills among English as a Foreign Language (EFL) students (AbuRezeq, 2018; Imansyan et al., 2019; Milatasari, 2013; Palupi et al., 2020; Tongjean et al., 2019), other studies have indicated its occasional failure in eliciting students’ engagement (Duschl & Wright, 1989; Gill, 2005), which affects students’ success in language learning. This results in the need to leverage other pedagogical strategies, including visual literacy, to increase the efficacy of inquiry-based learning (Gonzalez-Ledo, 2015; Maricimoi, 2017; Navidinia et al., 2018; Rokhaniyah, 2019, Sulastri, 2019; Tayib, 2015; Villasor, 2018; Yeom, 2018; Yunus and Chien, 2016).  The purposes of this study were 1) to determine the effects of the writing instructional model with integration of inquiry-based learning and visual literacy (WINVIS model) on the 21st century skills, including written communication, collaboration, critical thinking skill, and creative thinking skill, of EFL students and 2) to explore the students’ opinions towards the WINVIS model.  This mixed-methods research with a one-group pretest-posttest design was conducted using the five-step COPAE model, including Connecting, Outlining, Presenting, Applying, and Evaluating, with 20 high school students at a private school in Chaiyaphum province in the northeastern region of Thailand during the first semester of the 2020 academic year. The WINVIS model was implemented for 12 weeks, and data were collected using the 21st century skill pretest and posttest, the 21st century skill rubric, the students’ collaboration questionnaire, the student’s 21st century skill portfolio, the teacher’s observation note, the WINVIS opinion questionnaire, and focus group interviews. Quantitative data were analyzed using descriptive statistics of mean and standard deviation, as well as inferential statistics of Wilcoxon Signed-Rank Test, while content analysis was used to analyze qualitative data.

          The findings showed that the implementation of the WINVIS model had a positive effect on students’ 21st century skills, namely written communication, collaboration, critical thinking skill, and creative thinking skill. Furthermore, students expressed favorable views of the model across all domains evaluated: learning and writing progress, instructional methods, materials, the teacher’s role, and overall satisfaction with learning. Based on the findings, it could be concluded that the WINVIS model could improve the 21st century skills of EFL students. This research enriches the existing pedagogical literature by highlighting the importance of the writing instructional model with integration of inquiry-based learning and visual literacy.
Effects of structural priming and lexical residual activation on the acquisition of the English “noun + relative clause” by L1 chinese learners
Authors:   , Li Xueli
Published: September 2023

This study investigated L1 Chinese learners’ acquisition of the English “Noun + Relative Clause” based on Structural Priming (SP) (Bock, 1986; Bock, 1989; Bock & Griffin, 2000) and Lexical Residual Activation (LRA) (Cleland, 2003; Levelt et al., 1999). It was hypothesized that, based on SP, when L1 Chinese learners were primed by the English “Noun + Relative Clause”, when the priming and the target structures shared different head nouns, they would produce more “Noun + Relative Clause” than when they were primed by the English “Adj + Noun”, and the priming effect was significant. Also, based on SP and LRA, when the priming and the target structures shared the same head noun, the increasing priming effect would be enhanced.

The participants were 90 first year non-English major Chinese students attending Guizhou University of Finance and Economics, and 10 native English speakers. A picture description task was used to elicit data. The results showed, that after having been primed by the English “Noun + Relative Clause” when the priming and target structure shared different head nouns, the L1 Chinese learners produced more “Noun + Relative Clause” than “Adj + Noun”, and the priming effect was significant (p < 0.05). When the priming and the target structures shared the same head noun, the increasing priming effect was enhanced, and the enhancement was significant (p < 0.05). The hypotheses were therefore confirmed.

The study contributed to Second Language Acquisition in that SP and LRA would facilitate L1 Chinese learners’ acquisition of English “Noun + Relative Clause”, although this structure is non-exist in the learners’ L1. The study also gave pedagogical implications in that application of SP and LRA would facilitate as well as enhance the acquisition of L2 structures.
Typology and formation of pothole along the Mekong river and erosional remnant in sandstone of Khorat group, Ubon Ratchathani province, northeastern Thailand
Authors:   , Udomsak Sirawat
Published: September 2023

Phachan Samphanbok Geopark showcases fascinating erosional features, such as a multitude of potholes in the Mekong River. Additionally, it is home to the largest pedestal rock in Thailand, located in Ubon Ratchathani province in the northeastern part of the country, near the border between Thailand and Laos PDR. The formation of potholes is attributed to the erosive force of swirling sediment within fractures caused by vortex currents. In this research study on pothole evolution, the potholes in the Mekong River were categorized into two main groups: structural control potholes and non-structural control potholes. These types were further divided into five groups: ovoid potholes, lateral potholes, open lateral potholes, hierarchical potholes, and coalesced potholes. To analyze pothole characteristics, pebbles within sandstone beds were counted, and samples of pothole grinders were collected for composition comparison. The study revealed that a higher proportion of grinders in a pothole increases the likelihood of its occurrence. Stratigraphic columns were constructed in the study area to describe lithofacies and sedimentary structures. Pothole occurrence was found to be related to pebbly sandstone and trough cross bedding, which are associated with hierarchical potholes. A drone was utilized to capture aerial photos in a grid pattern, enabling the estimation of pothole density and categorization into three zones: high-density, moderate-density, and low-density pothole zones. Several factors were identified as controlling pothole occurrence, including horizontal bedding, the narrow width of the river leading to increased flow velocity, and the location situated in the cutbank zone. The formation of the giant pedestal rock is attributed to ancient gullies eroding into vertical fractures during the last tectonic event. The study of lithofacies indicates a paleoenvironment characterized by a braided river, with paleocurrents flowing in a southwest direction. Overall, this research emphasizes the significance of promoting the Phachan Samphanbok Geopark as a world-class geological heritage site. It also provides suggestions for the local communities and recommendations for future risk management in the Phachan and Samphanbok areas.
The requested record is temporarily suppressed.
Authors:   , Suppressed Temporarily
Published: September 2023

The requested record is temporarily suppressed.
Optimization of blast design for better fragmentation & reduction of ground vibration at Khao Mai Nuan pyrophyllite mine, Saraburi province, Thailand
Authors:   , Khan Arif
Published: September 2023

Control blasting with better fragmentation is very important to decrease the environmental impacts of blasting and the cost of downstream mining operations such as loading, transportation, crushing, and milling. Proper blasting designs with optimized parameters such as burden, spacing, stemming, sub-drilling, and amount of explosive ensure the required fragmentation with ground vibration within the standards set by different monitoring agencies.

This study dealt with the blasting design parameters, fragmentation, and ground vibration at the Khao Mai Nuan Pyrophyllite quarry Saraburi province, Thailand. First, grab samples were collected from the quarry's active benches and tested in a lab for strength, compositions and other rock characteristics. The obtained rock characteristic data such as rock type, rock description, uniaxial compressive strength (UCS), tensile strength, and density were used to optimize blast design parameters and build the predictive models. Based on the rock parameters data, four blast designs were proposed and then executed in the field.

A digital image processing method, image J software was employed for the size distribution analysis of each blast muckpile. The average size distribution results were obtained both in tabular and graphical form, which showed that the fragmentation performance had been increased from the average size of 25 inches to 14 inches with less noticeable boulder productions. On the other hand, blast-induced vibrations were measured carefully for all blasts conducted on-site using the Instantel Micromate seismograph device. Based on the statistical evaluation of the data pairs obtained from a scaled distance and peak particle velocity (PPV), the ground vibrations generated and propagated were very low to cause any kind of damage to any nearby structures within the vicinity of the mine. The highest peak particle velocity was recorded at 1.65 mm/s, and the lowest peak particle velocity (PPV) was 0.37 mm/s. Hence, it can be concluded that the proposed modified blast designs used for test blasts were suitable for the production of required size fragmentation, and it will be very unlikely that the PPV in such a range can affect any structure in the vicinity of the mine.
Study of saliva transcriptome and proteome in Thai patients with dental fluorosis
Authors:   , Gavila Patcharaporn
Published: September 2023

The purpose of this study was to examine the expression profiles of RNA and protein in Thai individuals with dental fluorosis and compare them with those without fluorosis. Additionally, the study aimed to establish a correlation between the severity of dental fluorosis, urinary fluoride levels, and water fluoride levels.

Methods: Schoolchildren in areas endemic for fluoride in Lamphun and Ratchaburi provinces of Thailand were screened for dental fluorosis severity and then enrolled in the study. Fluoride concentration in 24-hour urine and drinking water samples was measured using an ion-selective fluoride electrode. Saliva samples were collected in sterile tubes and stored at -20๐C for subsequent analysis. The saliva of dental and non-dental fluorosis groups were prepared for proteomic and transcriptomic analysis. Finally, urinary fluoride levels, water fluoride levels, RNA expression (transcriptome), and protein profile (proteome) were compared between individuals with and without dental fluorosis.

Result: Among 47 schoolchildren aged between 6-16 years, 27 were non-dental fluorosis, 10 were severe dental fluorosis and 10 were moderate dental fluorosis. The urine fluoride level in the severe group was significantly higher than that in the control group (p=0.007), but there was no statistically significant difference when compared to moderate groups (p=0.054). There was no statistically significant difference in water fluoride among the three groups (p=0.246). For transcriptomic analysis, there was no statistically significant difference in RNA profiles between the severe dental fluorosis and control groups. For proteomic analysis, 12 proteins were found to be differentially expressed. S100A9 was upregulated in both the severe and moderate groups when compared to the control group.

Conclusion: The study showed that the children having severe dental fluorosis had an elevation in urinary fluoride concentration. Twelve proteins were found differentially expressed between severe dental fluorosis, moderate dental fluorosis and non-dental fluorosis which are involved in biological processes including inflammation and cell apoptosis.
Enhanced triacylglycerol production in chlorella vulgaris by flux balance analysis on metabolic network
Authors:   , Kaothong Issalapap
Published: September 2023

Triacylglycerol (TAG) is a type of lipid that can be produced by a microalga called Chlorella vulgaris, which is a promising source of biodiesel. However, there is a lack of research and models explaining how to directly produce this lipid. To address this, we propose using linear minimization of metabolic adjustment (LMOMA), which predicts gene manipulation effects based on Flux Balance Analysis (FBA), to enhance TAG production. We conducted single-gene deletion experiments on the genome-scale metabolic model of C. vulgaris UTEX 395 (iCZ843) under different growth conditions: heterotrophy, photoautotrophy, and mixotrophy conditions. We found that the TAG production increased by 5 and 8 times in heterotrophy after deleting genes ‘genemark_Scaffold_1220-abinit-gene-0.13’ and ‘genemark_Scaffold_1016-abinit-gene-0.16’, respectively. Moreover, in photoautotrophic, after the deletion of ‘maker_Scaffold_332-augustus-gene-0.46’ gene, we found that the TAG productions were increased at 7 times. In mixotrophic, the TAG production was increased at 5 times after the deletion of 'maker_Scaffold_33-augustus-gene-0.119'. Moreover, even if there is limited information about fatty acid β-oxidation in Chlorella vulgaris, our study suggests that manipulating this process could be a valuable strategy for enhancing TAG production for this species. Understanding and manipulating the fatty acid β-oxidation pathway could contribute to the development of high TAG strains for various applications, including biofuel, nutrition, and eco-friendly solutions.
Co-effects of silver nanoparticles and microplastics on nitrifying microorganisms from wastewater treatment plants and their activities
Authors:   , Charanaipayuk Nampetch
Published: September 2023

Silver nanoparticles (AgNPs) and microplastics are emerging water contaminants of the decade. They share a similar fate and transport in wastewater treatment plants as they tend to accumulate in sludge of aeration tanks. Since both contaminants have negative effects on microbial growth, the ammonia-oxidizing microorganisms in the aeration tanks are at risk for inhibition and consequently nitrification process fails. This study investigated the effects of AgNPs and microplastics on ammonia-oxidizing activity and community. No inhibition of ammonia oxidation rate was observed at 0.1 mg/L AgNPs. Partial inhibition was found at 0.5 and 1 mg/L AgNPs, while complete inhibition occurred at higher concentrations of 2.5, 5, and 10 mg/L AgNPs. qPCR targeting AOA, AOB, and comammox amoA genes indicated that the numbers of the AOB amoA genes decreased when AgNPs were ≥2.5 mg/L while the comammox amoA genes dropped at ≥0.5 mg/L of AgNPs. Inhibition of AOA was found at AgNP concentrations above 0.5 mg/L but in substantially less compared to AOB and comammox. This study suggests that the three ammonia-oxidizing microorganisms have different responses to AgNP. The co-effect of AgNPs and PVC was studied in microcosms at concentrations of 0.5 mg/L and 500 mg/L, respectively. The results showed that the PVC microplastics had no inhibitory effects on the ammonia oxidation rate. Interestingly, the microcosms, in which the PVC was pre-shaken for 7 days before adding the sludge and AgNPs showed, a faster ammonia oxidation rate than the microcosms containing the sludge and AgNPs with and without fresh (non-shaken) PVC. This suggests that the pre-shaken PVC microplastics may reduce the toxicity of AgNPs. qPCR results indicated that PVC microplastics did not suppress AOA, AOB, and comammox.
Personal color analysis based on color harmony for skin tone
Authors:   , Sirisayan Punnaphat
Published: September 2023

Personal colour is a method for determining the best colours for a person's clothes, jewelry, make-up, and other accessories. Colours that promote a person’s skin radiance, healthy looks, and great character are appropriate. A person's skin tone defines their personal colours. This study investigated the method for analyzing personal colour using colour harmony between skin tone and sampled colours. Fifteen skin tone samples were selected from the Pantone SkinTone Guide to represent three types of skin undertone: warm, cool, and neutral. They were paired with 128 sampled colours with various hues, lightness, and chroma. The colour pairs were displayed one by one on a computer screen, allowing observers to evaluate colour harmony for each pair. It was found that in addition to skin undertone, skin lightness also affected colour harmony with respect to personal colour. Warm undertones of all lightness groups most harmonised with autumn colours (warm hues); the cool-high lightness group most harmonised with winter colours (cool hues); the cool-medium low lightness group harmonised with summer colours (cool hues); the neutral undertones harmonised with all season colours. The predictions from the universal colour hamony models yielded only 53% agreement with the visual results. This indicated that there should be a colour harmony model specially derived for personal colour analysis.
Forecasting cane sugar production under climate change and human-ecotoxicological impact
Authors:   , Tachabunya Arisara
Published: September 2023

This study forecasted sugar cane yield and cane sugar production using stepwise multiple linear regression (MLR) and autoregressive integrated moving average (ARIMA). Then, impacts on human health and ecosystems at the endpoint level were evaluated using openLCA software version 1.10.3 and the ReCiPe 2016 method. The functional units were the production of 1 kg raw sugar, 1 kg granulated sugar, and 1 kg refined sugar at Tamaka Sugar Industry Co., Ltd., Kanchanaburi province, Thailand. The result revealed that relative humidity at the Thong Pha Phum meteorological station, maximum temperature at the Kanchanaburi meteorological station, and oceanic Niño Index (ONI) were significant variables influencing sugarcane yield. The forecasting models indicated that annual sugarcane yields during crop years 2020/21 to 2024/25 fluctuated from 1,978,907 to 2,091,432 tons. When these sugar cane yields were processed to produce raw sugar, granulated sugar, and refined sugar, at the endpoint level, the harms to human health were estimated at 21.13–22.33 DALY, 221.56–234.15 DALY, and 300.32–317.40 DALY, respectively. The damages to ecosystems were approximated at 0.056–0.059 Species.yr, 0.583–0.617 Species.yr, and 0.791–0.836 Species.yr respectively. The outstanding contributions to human health impacts were fine particulate matter formation, global warming, and carcinogenic toxicity, whereas the prominent contributions to ecological impacts were acidification, global warming, and ozone formation. These findings offer valuable insights to relevant agencies, enabling them to enhance production efficiency and develop strategies to minimize the impact on both human health and ecosystems.
Political astronomy: south Korea space development under the international political dimension
Authors:   , Ueasukpakdee Nutnarin
Published: September 2023

Human Knows about space technology development since 1950s era during that time U.S. and Soviet Union were main actors in “Space race” war.  Space technology development of U.S. and Soviet Union in proxy war era were emphasized to develop for competition of political ideology and power of military. At the present time the purpose of space technology development different from the past, many countries that try to develop space technology for economic benefit, technology benefit, communication benefit or hidden connotation others. South Korea was the one that have potential and interesting to develop space technology because of the conflict with North Korea. Although, South Korea have potential of technology to develop own space technology but actor of South Korea in international level is only middle power state so, the co-operation is better way for South Korea space development.
Korean migration and Hallyu: the emergence of Korean celebrities in the Philippine entertainment industry
Authors:   , Lacuata Rose
Published: September 2023

The Philippines is home to many Korean migrants, who started migrating to the Philippines in the 1990s for economic purposes, and later for educational purposes. As the Korean community in the Philippines continued to grow, they brought with them their own culture, with businesses catering to Koreans also increasing. Meanwhile, Hallyu or the Korean wave has been spreading like wildfire all over the world since it first became popular in China in the early 2000s, and the Philippines is one of the countries where Korean culture has become popular. Eventually, the Korean community in the Philippines, in one way or another, became ambassadors of Korean culture in the country, opening their businesses that used to cater only to fellow Koreans to the Filipinos who became more interested in Korean culture because of K-dramas and K-pop. Because of the presence of Korean communities in the Philippines, Filipinos can have access to Korean products and culture. At the same time, the popularity of Hallyu and Korean culture in the Philippines also attracts Korean migrants to try their luck in the Philippines. Over time, some Korean migrants were able to make a name for themselves in the Philippine entertainment industry, further boosting the popularity of Korean culture in the Philippines. While looking at the role of Korean migration in the spread of Hallyu and Korean culture in the Philippines, it is also important to look at how it had a direct effect on the economy and international relations between the Philippines and South Korea.
Household characteristics of indebted households with members working in the public and private sector
Authors:   , Niwatananun Kawita
Published: September 2023

The research analyzed the influence of different household characteristics on household debt, including mortgage debt. Using data from Thailand’s Household Socio-Economic Survey in 2019 and 2021, the study implemented a logit model to identify household characteristics with significant impact on household debt. By analyzing data from two different periods that varied in social and economic contexts, the study highlighted critical factors that influenced household debt demand. The datasets were divided into three categories according to household work status. The categories include households with at least one public sector worker, households with no public sector workers but at least one private sector worker, and all other households. The study found that, in 2019 and 2021, different household characteristics, such as work status, location, and education attainment, influenced the households’ likelihood of having debt at varying levels of significance and direction. The household work status was a significant and positive factor regarding the probability of having household debt as well as household mortgage demand in all categories of household work statuses. When looking at other factors, the study discovered that households’ location, number of children, average household compensation, government loan schemes, and medical welfare services significantly increased the probability of household debt in both years, while the highest household education attainment level significantly decreased the probability of household debt. At the same time, the study highlighted that number of children, average household compensation, and medical welfare services significantly increased household mortgage demand. However, households’ location, highest household education attainment level, and government loan schemes decreased the likelihood of household mortgages significantly. In addition, household assets had a significant influence on the likelihood of household debt and household mortgage, but this differed by factor and year.
Poverty and elderly labor supply in Thailand
Authors:   , Zhao Ruoshan
Published: September 2023

The aim of this study was to estimate the impact of poverty on elderly labor force participation and investigate the relationship between poverty and the intensity of work (i.e., working days). Labor supply by the elderly is increasingly one of the most concerning issues in developing countries. Based on studies on the elderly, researchers have made significant findings regarding the labor participation rates of older adults. However, there is a lack of research on the relationship between the labor force participation rate and poverty among the elderly in Thailand. This study used the probit regression model and Tobit regression model and found that the impact of poverty on both labor participation and work intensity showed positive relationships. The elderly is more likely to participate in labor as their income increases, and older people living in poverty work fewer hours. These findings can support the further development of the government's elderly subsidy policy to improve the income status of the elderly, reduce their labor participate rate and improve the happiness index of the elderly in their later years.
Effects of different serum supplements on PiggyBac CD19 Chimeric Antigen Receptor T cells
Authors:   , Sanyanusin Mulita
Published: September 2023

Chimeric Antigen Receptor (CAR) T cell is a novel therapy for relapse and refractory hematologic malignancy. Characteristics of CAR T cells is associated with clinical efficacy and toxicity. Type of serum supplements used during cultivation affect the immunophenotype and function of viral-based CAR T cells. This study explores the effect of serum supplements on non-viral piggyBac transposon CAR T cell production. PiggyBac CD19 CAR T cells were expanded in cultured conditions containing either fetal bovine serum, human AB serum, human platelet lysate or xeno-free serum replacement. Then, the effect of different serum supplements on cell expansion, transfection efficiency, immunophenotypes and anti-tumor activity were evaluated. Xeno-free serum replacement exhibited comparable CAR surface expression, cell expansion, and short-term anti-tumor activity comparing with conventional serum supplements. However, CAR T cell cultivated with xeno-free and serum-free cultured condition exhibited increase naïve T cell population and better T cell expansion after long term co-culture as well as during tumor rechallenge assay. This study supports the usage of xeno-free serum replacement as an alternative source of serum supplements for PiggyBac based CAR T cell expansion.
Phthalate ester biodegradation in agricultural soil using exogenous bacterial consortium under fertilizer addition
Authors:   , Putri Theodora
Published: September 2023

Phthalate esters (PAEs) have been classified as a priority contaminant due to their endocrine-disrupting properties and abundance in the environment. Previously, several PAE-degrading consortia were enriched from landfill soil. This study aimed to initially select a consortium with efficient degradation activity, to characterize based on degradation kinetics and community dynamics, and to evaluate bioaugmentation feasibility while maintaining activity through continuous transfer. It was obtained based on enriched consortium selection that LF-NK-DEHP could simultaneously degrade 92.9% 100 mg l-1 DBP and 63.4% 100 mg l-1 DEHP within seven days. Kinetic degradation revealed DBP degradation by LF-NK-DEHP to fit the modified Gompertz model (R2 = 0.92,  t1/2 =1.49 days, 500 mg l-1 DBP). On the other hand, DEHP degradation kinetics fit a zero-order kinetic model (R2 = 0.94, t1/2 =7.23 days, 500 mg l-1 DEHP). Community dynamics study revealed a significant correlation between the genus Microbacterium to DBP degradation and the genus Rhodococcus to DEHP degradation. Genus Pigmentiphaga was reported to correlate with both PAEs. In addition, continuous transfer of LF-NK-DEHP could maintain PAE degradation activity. Bioaugmentation of enriched consortium LF-NK-DEHP revealed insignificant degradation rate compared to natural attenuation. However, fertilizer addition was observed to improve the bioaugmentation performance. Bioaugmentation added with fertilizer could degrade 200 mg kg-1 DEHP up to 75.87% within 25 days while removing 200 mg kg-1 DBP altogether within three days. This was further confirmed through alleviation of PAE intermediates phytotoxicity. Upon completion of this research, new information was acquired, including methods to maintain enriched consortia degradation activity, potential novel PAE-degraders, and feasibility of bioaugmentation with exogenous enriched consortium for PAE bioremediation.
Valorization of furfural to fuel additives by aluminophosphate and metal-organic framework catalysts
Authors:   , Ratthiwal Janejira
Published: September 2023

In this research, aluminophosphate (APAl) catalysts and metal oxide catalysts from calcined metal-organic frameworks (C-MOFs) were successfully synthesized. APAl-A catalysts were obtained from the FQM-383 laboratory group of Prof. Dr. Rafael Luque. The catalysts were named APAl-X/Y-A-Z which X/Y was the ratio of P/Al ratio and Z was the calcination temperature. Both factors were varied to study their effects on the catalyst properties of surface area and active acid sites on catalyst surface. The MOFs (MIL-101(Fe) and MIL-125(Ti)) were prepared by the solvothermal method. The calcination of MOFs (C-MIL-101(Fe) and C-MIL-125(Ti)) provided metal oxide catalysts. The APAl catalysts and C-MOFs catalysts catalyzed acetalization and hydrogenolysis, respectively. The furfural was used as the reactant in the reactions to upgrade the biomass and produce biofuel and chemical building blocks. The furfural acetalization with ethanol produced furfural diethyl acetal (FDA) which is biofuel. The acetalization reaction was studied in the batch system with varying reaction temperature to find the optimum condition. The reaction temperature of 25oC was found to favor the reaction. The APAl-85/15-A-773 exhibited the best performance in the reaction through the batch system with 89% conversion providing >99% selectivity of FDA. The catalyst reuse was investigated. Moreover, the furfural acetalization was estimated with the flow system over the APAl-85/15-A-773 giving 92% conversion. For furfural hydrogenolysis with 2-propanol, the furfuryl alcohol (FOL) was obtained. The FOL is an important starting material to produce other chemicals. The furfural hydrogenolysis with 2-propanol was studied through the flow system varying the catalysts. The C-MIL-125(Ti) catalyst showed the best performance in the reaction offering 83% conversion with 77% FOL selectivity.
Preparation of cellulose micro- and nano fibers from bagasse through deep eutectic solvent system
Authors:   , Phuckpetch Worapoj
Published: September 2023

This study aimed to prepare the cellulose micro- and nanofibers (CMNFs) using green chemistry viewpoint. The CMNFs were fabricated from sugarcane bagasse (SCB) pulp through treatment with zinc chloride (ZnCl2) - lactic acid (LA) in deep eutectic solvent (ZnCl2-LA DES) followed by short time ultrasonication of the DES-treated fibers in water. Under the optimum condition, the SCB pulp at high solid loading of 6.25% was treated with ZnCl2-LA DES. Lactate functionalized CMNFs with 230-270 nm length and 15-16 nm width were resulted in more than 90% yield and up to 62.2% crystallinity. The results showed that ZnCl2-LA DES was a multi-functional green solvent by acting as solvent, catalyst, and substrate. Also, the ZnCl2-LA DES could be reused for more than 5 times with slight decrease of performance. Zinc ion could be separated from ZnCl2-LA DES after used with simple precipitate method and the remained solution mainly contained of saccharides and lactic acid which can be disposed safely after neutralization or used as substrate for fermentation. Overall, ZnCl2-LA DES treatment followed by ultrasonication had proven to be effective and environmentally friendly procedure for preparation lactate functionalized CMNFs from SCB pulp.
Anti-pathogenic yeast malassezia globosa activity by propolis of stingless bee geniotrigona thoracica
Authors:   , Konsila Kawisara
Published: September 2023

Malassezia globosa is a lipophilic pathogen which relates to various chronic skin diseases. Azole drugs are main available treatments, but they have been reported with many side effects and microbial drug resistance. Therefore, the alternative medications should be developed. As the antimicrobial activity of propolis is outstanding, this study aims to investigate the potential of propolis from stingless bee, Geniotrigona thoracica against the pathogenic yeast. The extraction and characterization of the propolis components were done after the obtained extracts were evaluated for anti-M. globosa growth by using agar well diffusion assay and broth microdilution assay. Moreover, Inhibitory Concentration values at 50% (IC50) was estimated by using nonlinear regression analysis. The sample was firstly extracted with 80% methanol (MeOH), then was partitioned with different polarities of organic solvents. The first obtained crude extracts were crude 80% MeOH extract (CME) which exhibited zone of inhibition beginning at 200 mg/ml (11.83 ± 0.50 mm), and its IC50 was estimated at 2.21 mg/ml. After CME was partitioned, only crude MeOH partitioned extract (CMPE) showed the activity. The zone of inhibition from CMPE was observed beginning at 12.5 mg/ml (9.00 ± 0.00 mm) and IC50 values was estimated 1.22 mg/ml. Hence, CMPE was selected to further purification by column chromatography. The obtained CMPE 1 presented the best activity with zone of inhibition beginning at 12.5 mg/ml (11.83 ± 0.83 mm) and IC50 was predicted at 185.0 μg/ml. CMPE 1 was then identified as methyl gallate (MG) by using nuclear magnetic resonance (NMR). Accordingly, our synthetic MG and standard MG were subsequently tested, which the IC50 values were 223.7 μg/ml and 59.14 μg/ml, respectively. The Minimal Fungicidal Concentration of MG was 8 mg/ml as standard MG was used as a representative due to the limitation of the extract. Since extracellular lipase is necessary for survival and pathogenicity, the efficiency of MG toward the lipase was additionally investigated. Both colorimetric and agar-based methods were examined. The results suggested that activity of lipase and growth inhibition of MG might be not related, which percentage of lipase inhibition of standard MG (30.25 ± 1.91%) was lower than the growth inhibition (57.35 ± 0.59%) at the same concentration. Either it did not trend to increase in higher concentrations. However, it still supported the reduction of pathogenicity at low concentration. This is the first report that proves the activity against both growth and lipase of M. globosa by MG, which is explored from the natural resource. Thus, propolis from G. thoracica could be a good candidate source for searching new anti-Malassezia or other antifungal agents.
Human health risk assessment of heavy metals in roadside dust near hydropower dams construction areas in Wangduephodrang District of Bhutan
Authors:   , Dorjee Kinley
Published: September 2023

The concern over the heavy metal laden dust and its impact on human health has gained global importance over the decade. Exposure to roadside dust is associated with various acute and chronic health issues. Bhutan too is battling environmental health issues due to increasing anthropogenic and developmental activities such as hydropower dam construction. This study analyses the heavy metals concentrations in roadside dust near hydropower dam construction areas and assesses the noncancer and cancer risk of exposure to heavy metals laden dust through inhalation. This study was a cross sectional study. The roadside dust samples near hydropower dam construction in Wangduephodrang District were collected and analyzed for As, Pb, Cr, and Hg concentration by using ICP-OES. The socio demographic data and exposure factors were collected through interviews. The mean concentration of the heavy metals in the dust samples were Cd<Hg<As<Pb<Cr at <7.59x10-4±0.00, 4.7x10-4±6.7x10-4, 6.5x10-1±1.16, 5.16±5.90 and 15.71±5.58 mg/kg respectively. All the concentrations of the heavy metals in the dust were lower than the permissible range for safety. The noncancer risk assessment showed that the HQ was 3.66x10-07, 1.21x10-3, 2.67x10-6, 9.27x10-10, and 2.17x10-09 for As, Cr, Cd, Hg and Pb. The HI was 1.22x10-03±3.34x10-04, which indicates an acceptable risk at <1. The mean cancer risk of As, Cr, Cd and Pb was 1.09x10-09±4.50x10-10, 4.59x10-9±1.26x10-9, 6.88x10-10±1.89x10-10 and 4.59x10-12±1.26x10-12 respectively. The mean total cancer risk in the study area due to exposure to As, Cr, Cd and Pb was 6.92x10-9±1.90x10-9, and lower than the acceptable range of 1.0x10-6. There is no potential non-carcinogenic and carcinogenic risk due to exposure to the heavy metals laden dust through inhalation in the hydropower dam construction areas in Bhutan. However, it’s recommended that residents should use face masks for self-protection from roadside dust and prevention of other adverse health effects apart from exposure to heavy metals under the study. Further dust suppression methods need to be strengthened in the area.
This thesis is temporarily suppressed.
Authors:   , suppressed temporarily ,   Chulalongkorn University
Published: September 2023

This thesis is temporarily suppressed.
Folk beliefs, religions and cultural tourism in modern Vietnamese society: a case study of perfume temple festival
Authors:   , Wang Xuan
Published: September 2023

This thesis presents an analysis of the folk beliefs and cultural tourism in modern Vietnam through a case study of the Perfume Temple Festival. It is presumed that folk beliefs and traditional folklore have always constituted the spiritual foundation of Vietnamese people in present day society. It is found that the introduction of religions from outside Vietnam does not affect traditional folk beliefs. These religious beliefs have been integrated into Vietnamese beliefs and traditional culture. This integration contributes to the stability and harmony of modern Vietnamese society. The Perfume Temple Festival, as one of the biggest national temple festivals, embodies elements of folk beliefs, religions, ancient architectural relics and folk art. It can be concluded that the Perfume Temple is a Buddhist temple with a combination of various elements of folk beliefs and Confucian culture. The Perfume Temple festival also plays an important role in the economic development of local community. Located with pleasant scenery, the Perfume Temple is ideal for boating, worshipping Buddha and participating in various activities during the temple festival. It offers distinctive enjoyment to local and foreign tourists who visit the temple for blessings and sightseeing. Thus, the Perfume Temple festival has a potential to address the modern cultural tourism by combining both tangible and intangible cultural resources to modern tourism management.