Journal of Science and Technology Phetchabun Rajabhat University

Assessment of Water Quality, Trophic Status and Carbon Dioxide Captured by Biomass Producers in the Lentic Ecosystem of Chiang Rai Rajabhat University

2024-01-15T16:36:31+07:00

The objective of this study was to investigate water quality, trophic status, and assess the CO₂ capture by biomass producers. Water samples were collected using grab sampling from
three sampling sites and five times in Nong Bua of Chiang Rai Rajabhat University area during August-September 2021, and subsequently examined for physico-chemical water quality, Net primary Productivity (NPP) and CO₂ captured. The trophic status of water sources was evaluated, and the relationship between Sechi transparency, nutrients, and CO₂ capture by biomass producers was analyzed. The examined of the physico-chemical properties of water indicated that the water quality index predominantly aligns with established criteria for type 2 surface water. The mean NPP was 233.46±200.97 mgC·m^-2·day^-1, whereas the biomass producers captured an average of 856.80±737.57 mgC·m^-2·day^-1 of CO₂. Furthermore, the assessment based on Trophic State Index (TSI), which take into account total phosphorus, indicated that all water sources were in a hypereutrophic, whereas an assessment based on TSI measurements of Sechi transparency values classed all water sources as eutrophic. The regression analysis revealed significant relationships (p < 0.001) between CO₂ capture and the total phosphorus, nitrate nitrogen, and Sechi transparency.

Factors Related to Fall Prevention Behaviors among Elderly Adults, Namnao District, Phetchabun Province

2023-09-11T16:05:30+07:00

This cross-sectional analytical research was to study fall prevention behavior of the elderly, and factors related to fall prevention behavior of the elderly in Namnao District, Phetchabun Province, In this study, stratified random sampling was used to recruit 435 elderly samples. Tools were questionnaires as personal data, depression risk, home environment, self-efficacy and fall prevention behavior. Data were collected between May - June 2023. Data were analyzed using descriptive statistics and multiple logistic regression.

The results of this study showed that the fall prevention behaviors of samples were at a high level (65.75) and a moderate level (27.13). Regarding the factors related to fall prevention behaviors of the elderly, it was found that sex (OR_adj=0.63, 95%CI=0.41 to 0.98, p-value = 0.042), education (OR_adj =0.28, 95%CI=0.08 to 0.88, p-value = 0.029), vision (OR_adj =2.13, 95%CI=1.30 to 3.47, p-value = 0.002), fall history(OR_adj =0.21, 95%CI=0.07 to 0.62, p-value = 0.005), home environment (OR_adj =0.43, 95%CI=0.25 to 0.72, p-value = 0.002) and self-efficacy(OR_adj =0.25, 95%CI=0.16 to 0.41, p-value < 0.001). From the results of the study, public health officials should screening the eyes of the elderly, provide knowledge about home management for the elderly and promote self-efficacy for fall prevention in the elderly.

The Designed and Development of Fluid Bed Roasters for Coffee and Cocoa Controlled by Node-RED and PID

2024-02-12T17:31:48+07:00

This research studies and designed fluid bed roasters for coffee and cocoa controlled by Node-RED and PID. The research process is to design a fluid bed roasting system that uses hot air to drive coffee beans or cocoa into the roasting room. Designed a temperature control system by generating a Pulse-Width Modulation (PWM) by microcontroller. The PWM signal is transferred to the heater for controlled temperature. Node-RED operates an automation roasting system. The result shows that the fluid bed roasters for coffee and cocoa using time for roasting coffee lower than drum roaster is 500 s from 900-1,200 s. The use time for roasting cocoa as 540 s is same general roasting cocoa as 300-3,900 s. And, the controller system controls steady temperatures as 120-190 ºC. analyzed for mean absolute percentage error (MAE) of coffee and cocoa as 1.04% and 1.01% respectively.

Species of Fruit Flies and Their Infestation Rate on Indian Jujube (Ziziphus mauritiana Lam.) in Chai Badan District, Lop Buri Province

2024-03-10T12:36:11+07:00

The 'Samros' cultivar of Indian jujube (Ziziphus mauritiana Lam.) is a promising option for increasing farmers' income in Thailand. However, these jujube crops have been susceptible to damage from fruit fly infestations. Therefore, this study aimed to investigate the diversity of fruit flies and the extent of infestation in jujube fruits within Chai Badan District, Lop Buri Province. Fruit fly samples were collected during the fruiting season from December 2021 to February 2022. This was achieved through two methods: 1) employing traps baited with lure substances, and 2) gathering jujube fruits displaying signs of fruit fly infestation for laboratory analysis. The study identified two species of fruit flies, Bactrocera dorsalis (Hendel) and Bactrocera correcta (Bezzi), using traps with lure baits and jujube fruits showing signs of fruit fly infestation. The average capture rates were 1.66± 0.48 and 2.45±0.77 individuals/trap/week, respectively. Significantly, B. correcta was captured in greater numbers compared to B. dorsalis (p<0.05). Furthermore, upon examining jujube fruits in the laboratory, the infestation rates of B. dorsalis and B. correcta were recorded at 41.50±15.60 and 46.98± 17.80 individuals/kg, respectively. These rates did not exhibit significant differences (p≥0.05) between the two species but the infestation rate in December was significantly higher than in the other months (p < 0.05). The insights gained from this study regarding fruit fly species diversity and infestation rates will assist farmers in accurately identifying these pests. Consequently, this information can serve as a valuable guide for implementing preventive measures to mitigate future crop damage.

Factors associated with preventive behaviors for Coronavirus disease 2019 among people in Pamiang sub-district, Doisaket district, Chiang Mai province

2023-09-12T12:55:54+07:00

Coronavirus disease 2019 is a rapidly spreading disease. The preventive behaviors including related factors were important to the development of preventive behavior’s promotion. This research aimed to study preventive behaviors and factors that associated with preventive behaviors with Coronavirus disease 2019 among people in Pamiang sub-district, Doisaket district, Chiang Mai province. An Cross-sectional analytical study was conducted in 327 samples. The samples were selected by stratified random sampling. Data was collected by using a questionnaire. The data were analyzed using descriptive statistics and stepwise multiple regression analysis. The results revealed that people had a high level (good behavior level) at 96.64%. The relative factors to the preventive behaviors for Coronavirus disease 2019 include perceived barriers (β =.203, p <.001), knowledge (β =.196, p<.001), attitudes (β =.156, p=.008), perceived benefits (β =.134, p=.029), channel (β =.119, p=.012), and marital status (β =.105, p p=.023). They were able to explain predict 33.20% of the variation in preventive behaviors among people (Adjusted R²=.332). Perceived barriers were the most influential factor affecting to Coronavirus disease 2019 preventive behaviors (β =.203, p <.001). The development of behavioral promotion for disease prevention among people should considerably increases aware of the disease awareness, Add channel to receive information in a timely manner, including increase participation in all sectors to encourage sustainable practices of preventing the Coronavirus disease 2019.

Development of mathematics learning activities Using a cooperative learning model STAD techniques that enhance problem-solving skills and mathematics achievement Logic matters For Mathayom 4 students

2023-08-14T23:41:47+07:00

The objectives of this research are to 1) develop and find out the efficiency of STAD collaborative learning with traditional learning 2) compare academic achievement and problem solving skills using STAD cooperative learning. with normal learning management. 3) Compare academic achievement and problem-solving skills by organizing cooperative learning using the STAD technique before and after learning. 4) Compare academic achievement and problem-solving skills using traditional learning arrangements. before class and after class, and 5) get a format for organizing mathematics learning activities Using the STAD collaborative learning model that enhances problem-solving skills and mathematics 4 academic achievement.
The sample group used in the research was Mathayom 4 students at Phetchabun Provincial Administrative Organization School. (Wang Chomphu Witthayakhom), Mueang District, Phetchabun Province, Semester 1, Academic Year 2022, 2 classrooms, obtained from Simple Random Sampling, then drawn into experimental groups. and control group, 1 room each. As follows:
(1) the experimental group is 38 Mathayomsuksa 4/2 students who received learning through STAD cooperative learning techniques and (2) the control group is 38 Mathayomsuksa 4/3 students. that received normal learning management The tools used in the research consisted of 1) a plan for organizing mathematics learning activities. Using the collaborative learning management model, STAD technique, with normal learning management. Logic matters For Mathayom 4 students and 2) a test to measure academic achievement and mathematical problem-solving skills. Logic matters It is a multiple-choice test with 4 options, 30 questions. Statistics used in data analysis are percentage, mean, and standard deviation. t-test dependent and t-test for independent samples. The results of the research found that: 1) Results of evaluating the quality of mathematics learning activity plans using the STAD collaborative learning model that enhances problem-solving skills and mathematics learning achievement. Logic matters For Mathayom 4 students. From the evaluation of experts, it was found that the mathematics learning activity plan Using the collaborative learning management format STAD technique and normal learning management. Logic matters For Mathayom 4 students, the suitability is at the most appropriate level. has a mean of 4.94 and a standard deviation of 0.21 and the results of finding the efficiency of the mathematics learning activity plan Using the collaborative learning management model, STAD technique, with normal learning management. Logic matters For Mathayom 4 students, there is an efficiency value. / equals 80.33/80.70, which is higher than the set 80/80 criteria and consistent with the set assumptions. 2) Comparative results of academic achievement and problem-solving skills The topic of logic for Mathayom 4 students who received learning through cooperative learning using the STAD technique and normal learning. Before and after studying, it was found that the average between students by organizing Collaborative learning using STAD techniques is higher than traditional teaching. Statistically significant at the .05 level. 3) Results of comparing achievement Studying and problem solving skills Logic matters For Mathayom 4 students, learning is organized through cooperative learning techniques. Before studying and after studying, it was found that students' test scores after studying were significantly higher than before studying at the .05 level. 4) Results of comparing academic achievement and problem solving skills in logic. For Mathayom 4 students who receive learning management by organizing normal learning Before studying and after studying, it was found that students' test scores after studying were significantly higher than before studying at the .05 level. and 5) organizing mathematics learning activities Using the organizing format Collaborative learning STAD techniques that enhance problem-solving skills and mathematics achievement. There are 3 steps of the learning process: (1) the introduction step (2) the teaching step. There are 5 steps of teaching: Step 1, introduction into the lesson, Step 2, group work step, Step 3, testing step. The 4th stage is checking the answer of the test, the 5th stage is the work certification stage, and (3) the summary stage.

Development of Checklist Application Technology for Dairy Goat Farm Management of the Group Goat Milking Enterprises, Si Thep District, Phetchabun Province

2023-10-10T10:33:52+07:00

The objective of this research was to develop a checklist application on android mobile phones of dairy goat farm management, and to study the satisfaction of application users. Population used to evaluate application usage Farmers, Group Goat Milking Enterprises, Si Thep District, Phetchabun Province. There were 3 experts to evaluate the analysis of experts' development tools and the satisfaction assessment form of the checklist application dairy goat farm management. Statistical methods used for data analysis included calculating the mean and standard deviation. The results of the research showed that the quality assessment of the checklist application for dairy goat farm management for experts was very satisfied overall ( =4.48,
S.D=0.54) and farmers were satisfied with the overall quality level ( =4.63, S.D=0.52). It shows that the concept of this designed and developed system can be effectively implemented. Checklist Application users can collect comprehensive information on dairy goat farm management and benefit dairy goat farm management of community enterprise farmers. This will lead to increased productivity and sustainable development of the agricultural sector in the future.

The Antifungal Colletotrichum gloeosporioides of chemicals extracted from Peperomia pellucida (L.) Kunth

2024-02-13T11:32:09+07:00

Preliminary phytochemical analysis of Peperomia pellucida (L.) Kunth extracts using hexane, dichloromethane, and ethanol solvents revealed the presence of six phytochemical groups: alkaloids, flavonoids, coumarins, saponins, tannins, and steroids. The antifungal activity of the crude extracts against C. gloeosporioides was evaluated using the Food poison method at concentrations ranging from 6,000 to 12,000 ppm for 7 days. The results showed that the hexane crude extract at 12,000 ppm exhibited the highest antifungal activity with percent inhibition values of 74.38, 64.78, and 52.56 at 3, 5, and 7 days, respectively. However, the antifungal activity was lower compared to the standard fungicide mancozeb, which showed percent inhibition values of 87.50, 77.78, and 75.56 at 3, 5, and 7 days, respectively, under the same concentration and incubation periods. Nevertheless, the promising antifungal activity of the hexane crude extract from Peperomia pellucida (L.) Kunth warrants further investigation to isolate and identify the pure compounds responsible for the antifungal activity against C. gloeosporioides.

The Impact of the Magnitude of Player Impulse on Match Outcomes in Youth Football

2024-03-21T22:11:45+07:00

This study investigated the effect of player momentum on the outcome of youth football matches. We used an open-source Python library to track the movement of six players in ten 8-10 year-old youth football matches. We then calculated the individual and team average momentum and analyzed the relationship between the total momentum and the match outcome. The results showed that Team 1 had a mean momentum of 3.17 kg-m/s (SD = 1.63) and Team 2 had a mean momentum of 2.35 kg-m/s (SD = 1.57). The F-test indicated a significant difference between the two groups (F > 1), and the P-value was less than 0.05 (P < 0.05), indicating that teams with higher momentum had a 95% chance of winning. In conclusion, teams with higher total momentum have a greater chance of winning youth football matches.

A Note on Calculus: Bisection Point Theorem

2024-02-10T00:33:39+07:00

In this note, we defined the bisection point, the point on a closed interval with a continuous and nonnegative function of real numbers such that the value of the definite integral between the and is equal. Furthermore, we present several examples to demonstrate how to find the bisection point on a nonnegative polynomial function.