The Golden Teak : Science and Technology Journal (GTSJ.)

Investigation Biodiversity Ethnobotany in Mon State, Republic of the Union of Myanmar

Peangjai Jianwitchayakul — 2026-05-28

The study of ethnobotany in Mon State, Republic of the Union of Myanmar aimed to investigate the diversity of plants and local knowledge on plants from local people. The study was carried out in the community by field survey, plant samples and interviews about plants used from January 2017 to May 2018. The results showed, there were 39 families, 55 genera and 59 species which 19 species are herbs, 16 species are shrubs and shrubby, 12 species are trees, 7 species are climbers, 2 species are undershrubs and 1 species is grass. From the interviews, the results revealed, there are 4 types of plants according to their utilities and some are for multiple purposes, as follow: 1) edible plants; 11 families 13 genera 13 species, 2) medicinal plants; 35 families 49 genera 53 species, 3) construction materials; 5 families 5 genera 5 species and 4) other purposes; 12 families 15 genera 15 species.

Information Management System for Nipa palm

Soawanee Prachayagringkai — 2026-05-28

The purposes of this research were to 1) create a database, 2) develop a management information system of nipa palm utilization and 3) evaluate user satisfaction on the system which can be used to manage information and distribute knowledge of nipa palm and nipa palm products of the community in Phra Samut Chedi district, Samut Prakan province. The data were collected from 31 samples consisting of leaders/community representatives and leader/community enterprise representatives. The information included the need and presentation format of data. The database was created using MariaDB with Adminer. The system was constructed using PHP. The user interface was created using HTML5, JavaScript, jQuery and Ajax. The results showed that the developed database could provide nipa palm information and utilization, user information, store, and community product sales. The system could be managed by adding, deleting, editing, searching and checking data. It also supported general users, contributors, vendors, and system administrators. The efficiency of the system evaluated by 5 experts and 70 users was at high level with the average of 4.40 and 3.56, respectively. Summary of research findings, developed system can help manage data usage of Nipa Palm, bring benefits good with user.

Internet of Things for Resort Management System

Teerapong Songputh — 2026-05-28

In this research, the researcher designed a circuit based on internet of things (IoT) technology to apply to the resort management. The IoT circuit comprises Arduino for turning on/off lights through Android application and also a web application was developed under PHP language and MySQL database to manage the resort. Results showed that the resort management system comprising database management and IoT technology for turning on/off lights in the resort worked efficiently. This will bring more convenience to business to take care of their customers.

Antioxidant and Cytotoxic Activities of Zanthoxylum rhetsa Root

Pichit Sudta — 2026-05-28

Dried roots of Zanthoxylum rhetsa were extracted with hexane, ethyl acetate and methanol using maceration technique to obtain the hexane, ethyl acetate and methanol crude extracts, respectively. All crude extracts were examined for the total phenolic and total flavonoid constituents, antioxidant and cytotoxic activities. In addition, the preliminary phytochemical screening for the main groups of secondary metabolites were also investigated. The general detection reagents showed the presence of various secondary metabolites, especially the alkaloids which was the major component of all extracts. The highest total phenolic and total flavonoid were found in the methanol crude extract, followed by the crude ethyl acetate and hexane extracts. The methanol crude extract exhibited the strongest DPPH radical scavenging activity (IC₅₀; 1.12 ± 0.01 mg/mL) and reducing power in the comparison to the other extracts. The evaluation of antioxidant activities of all extracts showed a positive correlation between total phenolic and total flavonoid contents. The results of cytotoxicity screening found that hexane, ethyl acetate and methanol crude extracts exhibited specific and potent cytotoxic effect against only small cell lung cancer NCI-H187 with IC₅₀ values of 22.78, 26.50 and 3.37 μg/mL, respectively. The present study suggests that the extracts of Z. rhetsa roots are a new source of natural antioxidant for protective as well as prevention of life-threating diseases. In addition, the root of Z. rhetsa may have the potential to be developed into therapeutic option for treating cancer with high specificity.

Meringue Product from By-product Salted Egg White, Chaiya District, Suratthani Province

Supaporn Apirattananusorn — 2026-05-28

This research aimed to study the effect of carrageenan on dried egg white powder. The waste of raw salted egg white (from the duck eggs) was dialyzed to remove the excess salt, then mixing with carrageenan at 0, 0.4 and 0.8% (w/w). The mixture was dried and then ground to powder. The results showed that the density of meringue foam with the presence 0.4% carrageenan in egg white was lowest while the volume was highest, and the stability of foam maintained for 180 min without liquid drainage. The L*, a* and b* values of dried egg white powder were 82.74, -0.33 and 17.19, respectively. The pH value was 7.26 and 3.59% salt and 4.80% moisture content were found. It was revealed that the overall liking of the flavored-meringue products, made from dried egg white, was ranged between moderate and very much liking by untrained panelists. After 7 day-storage, the moisture content of meringue increased, while the hardness and crispiness decreased.

Fatigue Life Prediction of Shipper Shaft of Electric Crawler Excavator by Finite Element Method

Siva Sitthipong — 2026-05-28

The objective of this research is to predict the fatigue life of shipper shaft of the electric crawler excavator which is the major machine of Mae Moh mine. The method of study began with finding the fatigue resistance of the test material based on ASME B106.1M:1985 standard and creating an equation for predicting the fatigue life according to the Basquin's equation. Then the finite element method by NASTRAN program was used to analyze the stresses of shipper shaft of the electric crawler excavator and predict the fatigue life of shipper shaft of the electric crawler excavator. The results from the prediction of the fatigue life of shipper shaft of the electric crawler excavator while receiving the fatigue stress of 423 MPa were 276,449 cycle. The predict life equation is

A Study on Properties of Concrete Pavement Mixing Marble Powder

Aekasit Thianmas — 2026-05-28

A study on properties of concrete combined with marble powder pavement used the marble powder instead of using cement with the ratio 10%, 20%, and 30% by weight. In this case, the marble powder was the industrial waste from the marble production industry at Pran Kra Tai, kamphaengphet province. Determining water and cement ratio (W/B) as 0.40, the researcher tested the physical and mechanical properties, for instance, the water absorption and flexural strength according to Thai Industrial Standards Institute (TISI) no.378-2531. The result of the study showed that concrete combined with marble polishing powder pavement with the ratio 10% and 20% were qualified with the Thai Industrial Standards Institute with the water absorption at 3.61 % and 4.12 % which was not over 10%. The transverse blending resistance was 3.81 and 3.24 MPa (not less than 3.00 MPa). However, if the marble powder was increased up to 20%, this resulted in the disagreement between the transverse blending resistance and Thai Industrial Standards Institute.

Convergence Theorems for a Hybrid Pair of Nonexpansive Mappings in CAT (0) Spaces

Kritsana Sokhuma — 2026-05-28

In this paper, we constructed an iteration scheme involving a hybrid pair of the single valued nonexpansive mapping t and the multivalued nonexpansive mapping T of a complete CAT(0) space. In process, we removed a restricted condition (called end-point condition) in Akkasriworn and Sokhuma’s results (Akkasriworn and Sokhuma. 2015: 177–189) and utilized the same to prove some convergence theorems. The result is an expansion from Banach spaces results of Uddin, Abdou and Imdad. (Uddin, Abdou and Imdad. 2014: 1–13).

The Development of a Website for Pradoolai Temple, Kamphaengphet Using 3-Dimensional Pictures

Theerawut Poom-iam — 2026-05-28

This study aimed at 1) develop a public relations website and present Pradoolai Temple, Kamphaengphet in forms of 3-D pictures and video of all buildings within the temple; and 2) evaluate the satisfaction toward the website. The website employed the concept of system development life cycle (SDLC) with context diagram design, entity-relationship diagram (ERD) design, database design and user interface design. According to the evaluation, it was found that users gained the highest satisfaction toward the aspect of interesting forms of presentations ( = 4.75), followed by the aspect of ability to promote Pradoolai Temple ( = 4.70). However, the aspect of narrating sounds and background music gained at least satisfactory ( = 4.35). Generally, the system reached the highest criteria of satisfactory level ( = 4.50).

Solutions of the Diophantine equation

Paweena Thamkaew — 2026-05-28