Journal of Science and Technology CRRU

Development of Liquid Soap and Scrub Products from Lower-Grade Radish of Ban Sa Wang Community, Lopburi Province

Duangjai Boonkusol — 2026-06-29

This research aimed to develop liquid soap and scrub products from lower-grade radish (Raphanus sativus L.) into community products for Ban Sa Wang, and transfer knowledge to the community. Liquid soap and scrub products contained radish extract from lower-grade radish were developed through stakeholder participation process, and knowledge transfer through practical training workshops. Results showed that products with 5% radish extract had the most balanced properties, with appropriate pH values (4.42 - 5.85) for skin (liquid soap 5.61±0.06 and scrub 4.61±0.09), appealing color and fragrance, and acceptable foaming efficiency and physical stability. DPPH antioxidant activity testing revealed that liquid soap and scrub products with 5% extract showed 32.75±1.96% and 34.92±2.14% activity respectively. Consumer satisfaction evaluation from 30 volunteers indicated that products with 5% radish extract received the highest overall satisfaction scores (liquid soap 4.45±0.51 and scrub 4.42±0.56 out of 5). Quality analysis according to herbal product standards confirmed product safety, with no heavy metal contamination or pathogenic microorganisms exceeding standards. This knowledge transfer to the community showed the highest evaluation scores across all three dimensions: knowledge/understanding (4.76±0.35), satisfaction (4.81±0.45), and practical application (4.72±0.25). These evaluation results indicate that the knowledge transferred was appropriate and could be truly applied and utilized within the community. This research demonstrates the potential of lower-grade radish for developing quality and safe cosmetic products, creating added value for agricultural waste, and promoting sustainable income generation for communities.

On the Solutions of the Exponential Diophantine Equation 3^x-n^y=2z^2

Jirapong Mavongsa — 2026-06-29

In this paper, we study the solutions of the exponential Diophantine equation , where are non-negative integers and is a positive integer. By using elementary properties of congruence and Leu and Li’s theorem, results are obtained that if is even, then the equation has exactly four solutions, which are , For some odd , we show that if , then the equation has non-negative integer solutions in the form , , and , where is a non-negative integer. This discovery provides the solutions in the case of , namely, the solutions of the equation in non-negative integers are given by , , and , where is a non-negative integer. If , and the equation has a solution, then is odd and is even. If , and the equation has a solution, then is even. Moreover, we prove that if or , then

The Solution of the Diophantine Equation (4n-1)^x+67^y = z^2 When 4n-1 is Prime

Worachead Sommanee — 2026-06-29

In this research article, we prove that the Diophantine equation (4n–1)^x+67^y = z² has only one solution is (n, x, y, z) = (1,1,0,2) when x, y, z are non-negative integers and n is a positive integer such that 4n–1 is prime by applying Catalan's conjecture in the proof.

Algebraic Properties of Endomorphism Monoids on Barbell Graphs

Bawornrat Somsri — 2026-06-29

This research investigates the algebraic properties and characterization of the endomorphism monoid of the barbell graph B_n, formed by two complete graphs K_n joined by a bridge. We characterize the mapping properties of End(B_n) into four distinct classes End(K_n ,K'_n), End(K'_n ,K_n), End(K_n ,K_n), and End(K'_n ,K'_n), which constitute a monoid structure under the operation of function composition. Within this structure, End(K_n ,K'_n) acts as the identity element, while End(K_n ,K_n) and End(K'_n ,K'_n) serve as right zero elements. Furthermore, we establish that End(B_n) is always a regular monoid and satisfies the orthodox monoid if and only if n ≤ 2.

Compilation and Development of Big Data System for Water Management: Supporting Policy Decision-Making and Disaster Risk Management for Floods and Droughts in the Phrom Hod River Basin and Sa Kaeo Special Economic Zone

Rattachon Angmanee — 2026-06-29

This article aims to compile and develop a comprehensive Big Data platform for water resource management in the Phrom Hod river basin and the Sakaeo Special Economic Zone—areas identified as both environmentally vulnerable and strategically significant in Thailand’s economic and security landscape. The study integrates diverse datasets, including geographic information, climate data, water infrastructure, and socioeconomic indicators, collected from public agencies, private sectors, and real-time sensor networks. Through Extract–Transform–Load processes, the data are cleaned, harmonized, and stored in databases to enable scalable, flexible, and real-time access. The data was then used to analyze water situation trends and create linguistic models by integrating new dimensions of data from online news using high-performance web scraping techniques. This allowed for the extraction of data from 555 news websites in just 1 hour and 33 minutes through the collaboration of BeautifulSoup and Selenium, overcoming the limitations of JavaScript data loading. Furthermore, the application of the WangchanBERTa Thai language model in Named Entity Recognition (NER) demonstrated high accuracy in extracting crucial information such as date, province, and location, with an average accuracy rate of up to 85% based on human review, as well as n8n-based automation for continuous data ingestion and integration. Findings reveal that the use of Big Data significantly enhances the capacity to monitor hydrological changes, forecast flood and drought risks, and support data-driven policymaking. This integrated approach provides a robust foundation for resilient and sustainable water management at both regional and national levels, contributing to disaster mitigation and long-term water security.

Development of Problem-Solving Ability on the Topic of Solubility of Substances of Using KWDL Technique for Grade 8 Students at the Demonstration School of Thepsatri Rajabhat University

Sasithon Mongkoltong — 2026-06-29

This research aims to compare the problem-solving abilities regarding the solubility of substances of Grade 8 students at the Demonstration School of Thepsatri Rajabhat University between before and after learning the management with KWDL technique. The sample consisted of 49 students from Grade 8 student, Class 1 selected through cluster random sampling. The research instrument used in this study was a test the ability to solve problems related to the solubility of substances. Data were analyzed using mean, standard deviation and t-test dependent. The research results revealed that after learning through the KWDL technique, the sample group's ability to solve problems regarding substance solubility was higher than before learning at a statistical significantly at the level of .05

Small Radial of Stable Circular Orbit Perturbations and Effective Potential of a Charged Particle in a Central Force Field: f(r)=-k/r^2 - Eo/r^4 Using Polar Coordinates

Artit Hutem — 2026-06-29

The purpose of this research was to study the behavior of the motion of electrically charged particles moving in a central force function of radius. The study began by building a model of central force function of radius. Then, Lagrangian mechanics was used to calculate the distance of motion charged particles and effective potential using the central force function of radius. The results are being plotted on a graph by using a computer program where impact of the electric changed particles and variable changes can be analyzed and interpreted.

Raising the Level of Microbiology Laboratory Safety at Science Center Phetchabun Rajabhat University Using ESPReL Checklist

Sompian Sompian — 2026-06-29

Enhancing laboratory safety is a critical component of laboratory management, particularly in microbiology laboratories where activities involve various microorganisms, infectious materials, and hazardous chemicals that may pose risks to laboratory personnel, public health, and the environment. Therefore, the establishment and continuous improvement of laboratory safety systems are essential to ensure safe working conditions and compliance with recognized safety standards. This study aimed to assess and improve the safety status of the microbiology laboratory at the Faculty of Science and Technology, Phetchabun Rajabhat University, using the ESPReL Checklist framework, which comprises seven key safety components. The laboratory safety evaluation was conducted in two phases: a baseline assessment (first evaluation) and a post-intervention assessment (second evaluation), over a six-month period. The findings indicated that the overall laboratory safety score at baseline was 66.74%. Following the implementation of safety improvement measures, the overall score increased to 77.24%, representing an improvement of 10.50%. Analysis of individual components revealed that Component 6, which focuses on fundamental laboratory safety education and training, achieved the highest score at 100%, demonstrating a high level of awareness and competency among laboratory personnel. In contrast, Component 5, related to hazard prevention and emergency response systems, recorded the lowest score at 34.00%, indicating the need for further development and strengthening in this area. Overall, the results demonstrate that the implementation of the ESPReL Checklist effectively improved the safety performance of the microbiology laboratory. The findings can be used as a guideline for developing a model laboratory safety management system and promoting standardized safety practices for the handling of chemicals, laboratory equipment, and scientific instruments in accordance with established laboratory safety standards.

Guidelines for Health Workforce Management During the Transition Period of Sub-district Health Promoting Hospital Transfer to the Kamphaeng Phet Provincial Administrative Organization

Pubes Chaipitak — 2026-06-29

This research aimed to investigate the readiness, operational problems, specific needs, and strategic guidelines for health workforce management during the transition period of Sub-district Health Promoting Hospitals to the Kamphaeng Phet Provincial Administrative Organization. The study population comprised 74 directors of the transferred health centers and 17 experts and executives drawn from the Provincial Public Health Office, District Public Health Offices, and Local Administrative Organizations. The research instruments included structured questionnaires and interview forms. Quantitative data were analyzed using frequency, percentage, mean () and standard deviation (S.D.), while qualitative data obtained from the interviews were synthesized through content analysis. The research findings revealed that the overall readiness for the health workforce transfer was at a high level ( = 2.67). Regarding workforce management problems, the public health administration group reported structural difficulties at the highest and high level ( = 3.74). In terms of specific requirements, there was a clear need for personnel recruitment aligned with the official organizational structure based on facility size, enhanced welfare benefits, and appropriate compensation for family medicine practices. Additionally, the findings highlighted a demand for multidisciplinary teams from parent networks to serve as continuous mentors in family medicine operations. To address these challenges, the study proposes guidelines for health workforce management suggesting that relevant agencies should increase personnel numbers according to the specific size of each health facility and integrate budgetary support into a unified manpower framework for systematic health workforce planning. The study further recommends the establishment of designated service zones and the appointment of zone chairpersons to function as coordination hubs. Crucially, as an urgent measure, cooperation should be forged with local higher education institutions to develop and organize short-term training programs focusing on finance, procurement, and Ministry of Interior regulations for the transferred healthcare personnel, thereby effectively mitigating systemic impacts on public health administration.