KKU Research Journal (Graduate Studies)

Innovation of Cementitious Material Using Ceramic Electrical Insulator and Silica Fume

Atiwat Viengsam — 2025-04-17

This research presents a study of the compressive strength of mortar in ternary blend materials system of silica fume (SF) and ground ceramic electrical insulator (CE). The mortar mix proportions with constant 10% of SF as a partial cement replacement was used. Then, the use of CE in amounts of 5, 10, 15, and 20% mixed with SF as a partial replacement of cement by weight of the cementitious material. Water to binder ratio (W/B) with constant of 0.50 was used. Superplasticizer (SP) was used to improve the workability of mortar. Test results found that the use of CE in amounts of 5, 10, 15, and 20% mixed with SF as a partial replacement of cement by weight of the cementitious material resulted in higher compressive strength when compared to control mortar (CT), as well as mortar mixed with SF in amounts of 10% by weight of the cementitious material. The ground ceramic electrical insulator can be used as a cementitious material. The results of this research are a reduction in the amount of waste materials, reduce the burden of disposal and reduce environmental problems.

Compressive Strength, Porosity and Water Absorption of Mortar with Ternary Blend Cementitious System of Ordinary Portland Cement, Silica Fume and Ground Basalt Rubble

Witsawa Laoseng — 2025-04-17

This research presents a study of the compressive strength, porosity and water absorption of mortar with ternary blend cementitious system of ordinary Portland cement (OPC), silica fume (SF) and ground basalt rubble (BD). In this research, SF was used to replace OPC at a constant rate of 10% by weight of binder. Additionally, a consistent 10% rate of SF was mixed with BD at rates of 10, 15, 20, 25, and 30% by weight of binder. Water to binder ratio (W/B) with constant of 0.45 was used. Superplasticizer (SP) was used to improve the workability of mortar. Test results showed that using SF at 10% mixed with BD at rates of 10, 15, and 20% by weight of binder results in greater compressive strength, reduced porosity, and water absorption as compared to control mortar (CT).The ground basalt rubble can be developed as a new cementitious material in construction work. This study's findings can result in a reduction in both the amount of waste materials produced and the disposal burden.

Analysis Data Component in Daily Reports to Pursue the Progress of Public Construction Sector Projects in Thailand

Parinya Nabandit — 2025-04-17

Daily report data from Thailand's public construction sector has complicated or revealed significant issues for work that require specific qualities to be stored, as well as reporting issues with unclear information. Reliability concerns that contradict reality or provide information for personal benefit. Consequently, the purpose of this research is to study issues that must be reported in a daily report. To be used to pursue the progress of public construction sector projects in Thailand. Data were collected from 403 participants through a questionnaire covering 35 daily report items and analyzed using factor analysis. The results of the study concluded that topics can be organized into five groups, consisting of: 1) management and operation planning; 2) safety management and problems. 3) Identification of construction project information; 4) Evaluation of construction work; 5) Checking weather conditions as a priority.

Vibro-Aligned Systems for Recycled Carbon Fiber Reinforced Polymer (rCFRP) Processing

Norasak Sikkha — 2025-04-17

This paper experimentally investigated the effect of recycled carbon fiber reinforced plastic (rCFRP)'s initial orientations and fiber-to-polymer ratios using vibration for fiber alignment. The studied rCFRPs were placed on top of a filter plate (with rectangular holes) and vibrated for fiber alignment. The rCFRPs were then mixed with the matrix material (Polypropylene) at different ratios (25/75, 20/80, and 15/85) by heating. The alignments of fibers in the mixed polymers were analyzed by using image processing software. Tensile testing of fibers at 0°, 45°, 90° to the pulled direction was conducted to evaluate the mechanical properties. The results showed that a 90° orientation and a fiber-to-polymer ratio of 20/80 provided the highest tensile strength values.

Improving the Efficiency of Machinery in the Glass Bottle Beverage Production Process Through Autonomous Maintenance

Supichaya Chatpattanasiri — 2025-04-17

This research aims to enhance the overall efficiency of machinery in the beverage bottling process of a particular glass bottle packaging plant. It begins with collecting data on the bottling-filling machine, cap-sealing machine, and box-packing machine, and applying the principle of Autonomous Maintenance (AM) in the initial four out of eight steps, which include preparation, initial cleaning, eliminate source of contamination and difficult to access area, and draw up provisional standard. The results of the study indicate that the overall effectiveness of the machinery increased by 3.74 %, and the machinery uptime increased by 2.48 %, through the implementation of Autonomous Maintenance practices. This has positively impacted the readiness of the machinery to respond to production demands and can serve as a guideline for further improvement of other machinery in the future.

Anti-Allergy Activity, Chemical Content and Stability Testing of Herbal Formulation Extract for Treatment of Urticaria

Natta Choedchutirakul — 2025-04-17

The Kae-Lom-Pid formulation (KLP) is a combination of A.ilicifolius, A.ascalonicum, B.blumeana, and R.nasutus, as suggested in the therapy guidelines for Applied Thai Traditional Medicine. The study was to evaluate the in vitro anti-allergy activity of each plant and the KLP formulation extracts. It included chemical analysis and stability testing. The dried plant components were mixed and macerated in 95% ethanol for extraction. The antiallergy properties were evaluated by measuring the release of β-hexosaminidase and evaluating the levels of IL-4 and histamine release on RBL-2H3 cell lines by ELISA. The findings showed the KLP extract (HDE) effectively suppressed the activity of β-hexosaminidase, IL-4, and histamine release, with IC₅₀ values of 87.04±1.40, 50.90±0.24, and 22.59±0.41 µg/mL, respectively. The HDE contains rhinacanthin-C and -N at a concentration of 1.10±0.02% and 0.15±0.00%w/w, respectively, determined by HPLC. Furthermore, HDE remained stable when stored at 40±2°C, 75±5% RH for a period of 6 months. The findings suggest that HDE has a tendency to alleviate allergies.

The Development of an Optimism Promotion Program for Secondary-school Students through the Online Platforms: Design-Based Research

Piya Thongma — 2025-04-17

The objectives of this study are to design and develop an optimism promotion program and to study the results from applying the program. The participants are 37 students of lower secondary level from Satriwittaya School in the second semester of the academic year 2023. The selection of the participants was through purposive sampling. The research instrument was optimism questionnaires. The statistics implemented was standard deviation (SD) and percentage. From the one-group pretest posttest design, the result showed that 1) the students lacked optimism promotion. This led to the program designing process which consisted of (1.1) a reflection-enhancing activity, (1.2) an experience-enhancing activity and (1.3) creativity-enhancing activity with the duration of 10 hours in total. 2) After the optimism promotion program had been applied, the students showed an increasing level of optimism, more so than before applying the program. The activities are ranked as follows: (2.1) 59.46% of the students had their optimism level of thinking related to their optimism level of reasoning which means the positive students tended to share their positive viewpoints. (2.2) 91.89% of the students were able to analyze the impact of their viewpoints. (2.3) 83.78% of the students were able to improve their way of thinking to be more creative.

Personal Characteristics and Success Factors Influencing Job Satisfaction of Health Officers at Sub-district Health Promotion Hospitals in Nakhon Phanom Province

Patnitha Saenkham — 2025-04-17

This descriptive cross-sectional study aimed to investigate the personal characteristics and success factors influencing job satisfaction of health officers at Sub-district Health Promotion Hospitals in Nakhon Phanom Province. The study population consisted of 490 health officers, from which a stratified random sampling of 153 participants was selected. Data collection tools included a structured questionnaire for quantitative data and an In-Depth Interview guidelines for qualitative data. Descriptive and inferential statistics were used for data analysis. The results indicated that the overall level of success factors and job satisfaction were high, with mean scores of 3.99 (S.D.=0.47) and 4.09 (S.D.=0.44), respectively. Two independent variables factors related to the enhancement of the hospital's image and the connectivity between Sub-district Health Promotion Hospitals and with the parent hospital together predicted and influenced job satisfaction among health officers by 51.7 % (R²=0.517, p-value<0.001)

Organizational Climate and Organizational Support Affecting the Knowledge Management Process among Health Personnel in Bangkok Khon Kaen Hospital

Yuwaree Rungruthaivat — 2025-04-17

This descriptive cross-sectional research aimed to study organizational climate and organizational support affecting the knowledge management process among health personnel in Bangkok Khon Kaen hospital, Thailand. A set of 159 health personnel was randomly selected by stratified random sampling technique from 514 of populations. The quantitative data was collected by using the questionnaires and In-depth interview guidelines were using for the qualitative data. The data analysis was performed by using descriptive and inferential statistics. The results showed that the overall level of Organizational Climate, organizational support and knowledge management process among health personnel in Bangkok Khon Kaen hospital were at a high level with average of 4.31 (S.D.=0.47), 4.29 (S.D.=0.52) and 4.29 (S.D.=0.50), respectively. Four variables composed of organizational support in management, organizational climate in performance standards, organizational support in materials and organizational climate in reward, affected and could jointly predict the knowledge management process among health personnel in Bangkok Khon Kaen hospital at 80.5% (R² = 0.805, p-value<0.001)

Critical Success Factors and Administrative Factors Affecting the Risk Management of Registered Nurses at Mukdahan hospital Mukdahan Province

Kamonporn Poodaen — 2025-04-17

This cross- sectional descriptive research aimed to study the level of risk management, critical success factors and administrative factors affecting the risk management of registered nurses at Mukdahan hospital Mukdahan province, Thailand. A set of 133 registered nurses was randomly selected by stratified random sampling from the 385 populations and 12 key informants were in In-depth interview guidelines to collect qualitative data gathering. Data distribution was performed by descriptive and inferential statistics at a significance level of 0.05. The results showed that the overall level of critical success factors, administrative factors and the risk management of registered nurses at Mukdahan hospital Mukdahan province were at high level with averages 3.70 (S.D.= 0.54), 3.59 (S.D.= 0.55) and 3.78 (S.D.= 0.48), respectively. The results showed that critical success factors; development of health care facility image, administrative factors; time and budget that affected and could jointly predict the risk management of registered nurses at Mukdahan hospital Mukdahan province at 54.0 percentage (R² = 0.540, p-value = 0.039). The results of this research, can use to plan in creating guidelines for promoting risk management in the organization to be more effective.

Factors Affecting the Participation in the Operation of the Local Health Security Fund Among Local Health Security Fund Committee at Bueng Kan Province

Dalin Seenonghang — 2025-04-17

This Cross-Sectional Descriptive Research aimed to study factors affecting the participation in the operation of the local health security fund among local health security fund committee at Buengkan Province. The sample were 180 personnel with randomly selected by Simple Random Sampling techniques from 969 of population, two research instruments used a self-administered questionnaire for the quantitative data and In-depth interview guidelines for the qualitative data from 9 key informants were used In-depth interview guideline for qualitative data gathering. Data analysis was performed by descriptive and inferential statistics as significant level at 0.05. The results showed that overall of the motivation and the continuous quality improvement were at high level. The results showed that five variables of hygiene factors; professional status, supporting governance enforcement, supporting job security, personal life, motivating factors; work conditions could collaboratively predict the participation in the operations of the local health insurance fund committee at the provincial level, Bueng Kan Province, with an explained variance of 66.0% (R²=0.660,p-value<0.001)

Organizational Support and Key Success Factors Affecting Elderly Long Term Care Performance of Health Personnel at sub-district Health Promoting Hospitals in Nakhonphanom Province

Preeyaporn Sutham — 2025-04-17

This cross-sectional descriptive research aimed to study Organizational Support and Key Success Factors Affecting Elderly Long Term Care Performance of Health Personnel at sub-district Health Promoting Hospitals Nakhonphanom Province. The study population consisted of 221 health officers, from which a Simple random sampling techniques of 127 participants was selected. Data collection tools included a structured questionnaire for quantitative data and an In-Depth Interview guideline for qualitative data. Descriptive and inferential statistics were used for data analysis. The results showed that the overall organizational support and key success factors and the elderly long term care performance of health personnel at sub-district health promoting hospitals were at a high level. Three variables consisted of two key success factors including; the supporting agencies at all levels having support plans and the building understanding and encouraging cooperation, and one of organizational support was management, which were affected and could jointly predicted the elderly long term care performance of health personnel at sub-district health promoting hospitals in Nakhonphanom province at 78.5 percentage (R²=0.785, p-value<0.001).

Leadership Soft Skills and Key Success Factors Affecting the Happiness at Work of Health Personnel in Roi-Et Hospital, Roi-Et Province

Khwanhatai Sukkhaphet — 2025-04-17

This cross-sectional descriptive research aimed to study leadership soft skills and key success factors affecting the happiness at work of health personnel in Roi-Et hospital Roi-Et Province , Thailand, A set of 153 health personnel was randomly selected by stratified random sampling technique from 1,493 populations. The quantitative data was collected by using questionnaires and used In-Depth interview guidelines to collect qualitative data. Data analysis was performed by using descriptive and inferential statistics at a significance level of 0.05. The results showed that the overall level of leadership soft skills, key success factors, and the happiness at work of health personnel were at a high level with an averages of 3.91 (S.D.=0.37), 3.87 (S.D.=0.43) and 3.92 (S.D.=0.28), respectively. Three variables composed of key success factors; the development of the quality of medical care, leadership soft skills; self development and teamwork affected and could jointly predict the happiness at work of health personnel in Roi-et hospital, Roi-et Province at 28.6 percentage (R²=0.286, p-value<0.001).

Factors Associated with the Food Safety Management for Consumer of the Traditional Cuisine in Chiang Rai, Thailand

Vivat Keawdounglek — 2025-04-17

The objective of this study is to study factors associated with the food safety management for consumer of the traditional cuisine in Chiang Rai, Thailand. The cross-sectional study was conducted, and four independent factors were carried out including the 1) demographic factors, 2) food safety management in the whole sell factors, 3) food safety management in the traditional cuisine restaurant factors, and 4) communication factors; meanwhile, the dependent factor was the food safety management for consumers. The questionnaire was designed to collect information from 306 sample sizes. The methods for data analysis were the descriptive statistics (frequency, percentage, and mean), and the inferential statistics (t-test and One-way ANOVA). The results demonstrate that the demographic factors were not related to the food safety management for consumers. By contrast, food safety management in the whole sell factors, food safety management in the traditional cuisine restaurant factors, and communication factors were associated with the food safety management for consumers of the traditional cuisine at the 0.05 of the significant level. Therefore, the relevant sectors should apply these factors to create the food safety management guidelines for traditional cuisine to wildly encourage the consumer and traveler’s health and the economic growth in the Chiang Rai, Thailand.

Formula Optimization for Producing Snack Bar Made from Foxtail Millet (Setaria italica Beauv.), Pumpkin Seeds and Oats

Parisut Chalermchaiwat — 2025-04-17

This research aims to enhance the value of agricultural products and expand the utilization of foxtail millet by developing it into a snack bar. The ratio of three main ingredients (foxtail millet 15-20%, pumpkin seeds 25-30%, and oats 45-60%) was investigated using a mixture design approach to evaluate their impact on the physical, chemical, and sensory properties of the snack bars. The results revealed that increasing the amount of foxtail millet and pumpkin seeds led to higher protein and fat content but lower lightness (L*) and hardness values. On the other hand, increasing oat resulted in lower moisture content and aw value but higher acceptability scores. Therefore, the optimal formulation for producing snack bars consisted of 20% foxtail millet, 27.50% pumpkin seeds, and 52.50% oats. This formulation had an aw of 0.35, lightness (L*) of 46.35, and hardness of 30.15 N. The moisture, protein, fat, ash, crude fiber, and carbohydrate contents were 7.57%, 31.09%, 19.24%, 3.06%, 2.36%, and 36.68%, respectively. The developed snack bars (100 g per serving) provided 509 kcal, making them a healthy snack alternative that can replace a meal and is high in protein (31.09 g) according to the Ministry of Public Health Announcement (No. 445). Additionally, the acceptability scores for all attributes were within the range of “Like slightly” to “Like moderately”.

Editorial Note

Professor Dr.Wittaya Ngeontae — 2025-04-17

วารสารวิจัย มข. (ฉบับบัณฑิตศึกษา) ยังคงดำเนินงานด้วยความมุ่งมั่นในการเป็นเวทีทางวิชาการที่เปิดโอกาสให้นิสิต นักศึกษา นักวิจัย และบุคลากรจากหลากหลายสาขา ได้เผยแพร่ผลงานวิจัยที่มีคุณภาพ มีความน่าเชื่อถือ และสามารถนำไปต่อยอดได้จริงในสังคมและแวดวงวิชาการ

ในปี 2568 ซึ่งเป็นปีที่วารสารดำเนินการมาอย่างต่อเนื่องเป็นปีที่ 25 ฉบับที่ 1 (มกราคม–เมษายน 2568) วารสารฯ ได้รับการจัดกลุ่มใหม่ในฐานข้อมูล TCI โดยมีการปรับสถานะจากกลุ่มที่ 1 เป็นกลุ่มที่ 2 แม้จะเป็นการเปลี่ยนแปลงที่ท้าทาย แต่คณะทำงานทุกฝ่ายตระหนักถึงความจำเป็นในการพัฒนาคุณภาพวารสารให้ดียิ่งขึ้น และได้เร่งดำเนินการปรับปรุงในหลายด้าน ทั้งระบบบริหารจัดการวารสาร การเพิ่มประสิทธิภาพกระบวนการประเมินบทความ และการขยายเครือข่ายนักวิจัย เพื่อมุ่งหวังให้วารสารสามารถก้าวกลับสู่กลุ่มที่ 1 ได้ในเร็ววัน

ในฉบับที่ 1 ของปี 2568 นี้ วารสารฯ ได้นำเสนอผลงานวิจัยจำนวน 15 เรื่อง ซึ่งผ่านการกลั่นกรองโดยผู้ทรงคุณวุฒิในสาขาที่เกี่ยวข้อง ครอบคลุมขอบเขตหลากหลาย ตัวอย่างบทความที่น่าสนใจ ได้แก่ การพัฒนาและประเมินประสิทธิภาพวัสดุก่อสร้าง การออกแบบระบบในกระบวนการผลิต การวิเคราะห์ข้อมูลโครงการภาครัฐ การศึกษาเชิงนโยบายด้านสุขภาพ รวมถึงการพัฒนาผลิตภัณฑ์อาหารที่ตอบโจทย์สุขภาพผู้บริโภค ทั้งหมดสะท้อนให้เห็นถึงการบูรณาการองค์ความรู้ที่ทันสมัยและมีคุณูปการต่อการพัฒนาในระดับชุมชน ระดับประเทศ และระดับสากล

วารสารฯ ขอแสดงความขอบคุณอย่างยิ่งต่อผู้เขียนบทความทุกท่านที่ให้ความไว้วางใจส่งผลงานเข้ารับการพิจารณา ตลอดจนผู้ทรงคุณวุฒิ คณะกรรมการ และทีมงานทุกฝ่ายที่มีส่วนร่วมในการพัฒนาและรักษาคุณภาพของวารสาร เราหวังเป็นอย่างยิ่งว่า วารสารวิจัย มข. (ฉบับบัณฑิตศึกษา) จะยังคงเป็นแหล่งเผยแพร่ผลงานวิชาการที่ทรงคุณค่า และขอให้ทุกท่านร่วมเป็นพลังในการขับเคลื่อนวารสารให้กลับคืนสู่กลุ่มคุณภาพที่สูงยิ่งขึ้นอีกครั้งในอนาคตอันใกล้นี้

ในโอกาสนี้กองบรรณาธิการวารสารวิจัย มข. (ฉบับบัณฑิตศึกษา) ยังคงเปิดรับบทความจากนักวิจัย และบุคคลทั่วไปที่สนใจเผยแพร่ผลงานวิจัยในรูปแบบบทความวิจัย บทความวิชาการ บทความวิจัยสื่อสารอย่างสั้น และบทความปริทัศน์ ในสาขาวิชาวิทยาศาสตร์และเทคโนโลยี วิทยาศาสตร์สุขภาพ และวิศวกรรมศาสตร์ โดยผู้สนใจสามารถศึกษารายละเอียดและส่งบทความผ่านระบบออนไลน์ของวารสารได้ที่
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