Rattanakosin Journal of Science and Technology

Using of Sacha inchi Flour as a Butter Substitute in Biscuits

Fri, 03 May 2024 00:00:00 +0700

The purpose of this research was to developed Sacha Inchi products in Nong Ong, U Thong District, Suphan Buri province. Sacha Inchi flour was used as a substitute for animal-derived butter to develop biscuits products. The study found that Microwave-roasted Sacha Inchi were able to be ground into Sacha Inchi flour with suitable physical and chemical properties to develop biscuits than roasted Sacha Inchi. There were four different formulations of Sacha Inchi flour 0%, 15%, 25 and 35%. It was found that biscuit products using 25% Sacha Inchi flour instead of wheat flour and butter could be formed into pastry sheets. The protein fat and carbohydrate contents were 16.53, 23.59 and 2.60 percent, respectively. The total phenolic compounds were 20.34 mgGAE/100 g, which was significantly different from the control. The storage conditions were studied for 1, 2 and 3 months at 4 °C and room temperature. Two types of packaging were used: laminated bags and cans. It was found that they could be stored for at least 3 months under normal atmosphere at 4⁰C in laminated bags. The moisture content of biscuits products is 1-2 %, which is lower than the moisture content that causes biscuits to lose their crispness, which is 7%. It was found that the microorganisms were in the microbiological standard of the cereal snacks. (Thai Industrial Standards Institute, 1998), which requires the total microbial count not to exceed 10⁴ colony per 1 g sample or 4 log10 CFU/g.

Effects of color and nutritional value of biscuit products containing wheat flour replacement with banana blossom flour

Fri, 03 May 2024 00:00:00 +0700

The purpose of this research was to study 3 types of solutions (rice washing water, honey solution, 2% citric acid solution) using distilled water as a control to inhibit the browning reaction of banana blossom. Banana blossom flour is then used to replace wheat flour in biscuit products. Color physical characteristics (L* a* b*) of banana blossom flour and nutritional values (fat, protein, dietary fiber) of biscuits were analyzed. The experimental results showed that Rice water was the best to inhibit the browning reaction. It was found that the brightness (L*), redness (a*), and yellowness (b*) were better than both solutions. In addition, biscuits fortified with banana flower flour at 0, 25, 50, 75 and 100 had lightness (L*) of 70.40, 27.36, 26.60, 29.19, 28, 92 and redness (a*) was 3.34, 6.40, 5.84, 6.06, 6.64 and the yellowness (b*) was 27.94, 10.55, 10.50, 12.69, 15.12 respectively. Biscuits are substituted with banana blossom flour 25%, protein, fat and dietary fiber values are 1.38, 22.65, 62.05 percent. While, the control formula biscuits were 0.59, 20.47, 15.48 percent, respectively, with a statistically significant difference (p≤0.05).

An Experimental Study of Solar Chili Dryer with Volcanic Rock Thermal Storage

Yuttana Sriudom, Anurat Tewata, Sangkom Sapso — Fri, 03 May 2024 00:00:00 +0700

The aimed of this research to experimentally study of chili solar dryer efficiency with volcanic rock thermal storage. The first solar dryer was a solar dryer without volcanic rock thermal storage (SD1). The second solar dryer was a solar dryer with basalt rock thermal storage (SD2). The last solar dryer was a solar dryer with pumice rock thermal storage (SD3). The air flow rate was varied to 0.0142 m³/s 0.0208 m³/s and 0.0279 m³/s. The chili was dried to final moisture content of 13% (w.b.) from the initial moisture content was 75% (w.b.). The result from drying found that the solar dryer efficiency increased when the air flow rate was increased for all test set. The maximum solar dryer efficiency in this test when the air flow rate of 0.0279 m³/sec. The average efficiency of the solar dryer without volcanic rock thermal storage, the solar dryer with basalt rock thermal storage and the solar dryer with pumice rock thermal storage were 25.34%, 28.00% and 30.73%, respectively. The lowest drying time of solar dryer with pumice rock thermal storage was 23.20 hours and the highest efficiency was 30.73%

Prediction model for cervical cancer by using machine learning

Phakkaphon Sawatkamon, Sawita Tongkunwong — Fri, 03 May 2024 00:00:00 +0700

The aim of this study is to compare predictive performance of cervical cancer prediction models using machine learning techniques, including decision trees, gradient boosted trees, random forests, and deep learning. The study collected data from Kaggle.com, comprising 110 data points, with 21 independent variables, such as age, number of sexual partners, age of first sexual intercourse, number of pregnancies, smoking per year, contraceptive pill use, year of contraceptive pill use, intrauterine device use, years of intrauterine device use, sexually transmitted infections, genital herpes, genital warts, syphilis, cervical infection, herpes simplex virus infection, rice-sized cervical polyps, AIDS, HIV infection, HPV infection, and hepatitis B virus infection. The dependent variable is binary, classifying individuals into two groups: those with cervical cancer and those without. The study results indicate that the deep learning-based cervical cancer prediction model performs with the highest predictive efficiency, achieving an accuracy rate of 95.45%.

A Design of car theft prevention system using the IoT

Fri, 03 May 2024 00:00:00 +0700

This research presents the functional design of a car theft prevention system using the IoT system. It relies on the working principle of converting direct current from 12 V to 5 V with a voltage reduction circuit, a buck converter for use with devices for operating control systems. In the operation of this system, control commands are written to the ESP8266 Wi-Fi board module to control the keycard command set and relay operation. In this research, the working principles of various types of cars were used. that uses a fuel pressure pump to improve its operation with greater safety with a control unit that is operated via a key card device. It is also designed to be able to be operated via the IoT system by turning on and off the fuel pressure pump through the Blynk IoT application, including a notification system through the Line application to make this user's property safer.

The Development Ready to Cook by Freeze Drying with Low Energy Green Curry

Pimonnat Viturat — Fri, 03 May 2024 00:00:00 +0700

This research concerned the development ready-to-cook with low energy Thai curry. The purpose was to study and develop a Low Energy Thai coconut milk curry recipe as a healthy semi-finished dried food in accordance with current consumer demand, value, and peferences. A questionnaire was utilized to collect data from general consumers in order to study and generate a standard recipe. In an experiment, a recipe was developed by using fresh skim milk to partially replace coconut milk, thus increasing nutritional value. The researcher used a sensory quality assessment with panelists together with experts. The most accepted recipe was studied in terms of nutritional and research was conducted concerning the procedure for dried, ready-to-cook, and semi-finished food through a freeze-drying process. According to the study results from the questionnaire survey, the preferences of consumers for Thai coconut milk curry were mostly for green curry ( = 3.71). In the case of semi-finished/finished food products containing coconut milk curry, nearly half of the consumers (40%) decided to buy green curry products. This conformed to the factors of selection for buying semi-finished food, which consumers tended to buy, liking cleanliness and taste according to preference at a high level ( = 4.71, 4.60 and 4.56). The researcher selected to study and develop a green curry recipe applied from a standard green curry recipe from previous research dealing with the development of standard Thai food recipes for different ceremonies (Phongsak, 2020), with the most acceptance by panelists and experts at an overall preference level of = 8.13±0.86. The recipe was studied and developed by using fresh skim milk to replace coconut milk at the 50% level, which was mostly accepted with an overall preference level of = 8.30±0.79. The fresh skim milk to partially replace coconut milk in Thai curry has low energy and more nutrition as standard. Finally regarding the study of ready-to-cook process with freeze drying.

Behavior of Piled Raft Foundation in Clay Subjected to Lateral Cyclic Loading

Sommart Swasdi, Samsudin Lateh, Tanan Chubuppakarn — Fri, 03 May 2024 00:00:00 +0700

The popularity of piled raft foundations is on the rise due to their cost-saving advantages in construction. These foundations not only enhance the efficiency of pile foundations but also reduce the number of required piles. This becomes particularly crucial when considering the ability of foundations to withstand lateral cyclic loads such as those induced by earthquakes, wind loads on tall buildings, or wind turbines. Therefore, it is imperative to comprehend the behavior of piled rafts under lateral loads, especially the complex and challenging analysis of cyclical lateral loads. The finite element method proves instrumental in analyzing such intricate behaviors. This research employed a 3D finite element model to investigate the behavior of piled raft foundations under cyclic lateral loading in clay soils. The study involved varying the pattern of lateral cyclic loading, frequency, and number of cycles. The findings indicated that the lateral load behavior of piled rafts was significantly influenced by cyclic loading, leading to a decrease in lateral load capacity as the number of cyclic force cycles increased, and the frequency magnitude changed. This behavior is attributed to the permanent soil deformation surrounding the piles and beneath the raft. The value of the locked-in moment in piles, when the lateral load was withdrawn to zero, will increase with the increasing number of cycles.

A study of radiation measurement using CMOS camera in smartphones digital camera

Fri, 03 May 2024 00:00:00 +0700

Background: X-ray radiography has played a vital role as a part of radiation technique in non-destructive testing (NDT). This technique is utilized as a tool which is invisible by visual inspection. Combining the availability of smart phone and the high efficiency of their CMOS camera, there has been an interest in using smart phone as a radiation monitoring device. Objectives: This research aims to study a radiation counting system using a CMOS camera in smartphones with Android and IOS systems, in comparison with ionization chambers. Materials and Methods: The X-ray counting system in this study consists of an X-ray generator, smartphones with Android and IOS systems, ionization chambers and the ImageJ program for image analysis. The distance from X-ray generator to image receptor (smartphone) was set at 100 cm. The voltage of the X-ray generator was fixed at 100 kVp, while the exposure time was varied from 2, 4, 6, 8, 10, 12, 16, and 20 mAs. The radiographic images were received by a CMOS sensor of the digital camera in the smartphones, which were sealed with duct tape to avoid any unrelated visible light. The radiographic images were analyzed in terms of image intensity, radiation counting capability, and standard deviation (S.D.). Results: Experimental results showed that the exposure time (mAs) of X-ray generator affects the quality of radiographic images in terms of radiation counting value, image intensity, and noise. Image intensities of radiographic images darkened with increasing exposure time from 2 to 20 mAs. The radiation counting value and image noise increased with increasing exposure time in the range of 2 to 12 mAs. A similar phenomenon was also observed by using ionization chambers. However, the exposure time level cannot exceed 8 mAs since it is over the limit of a CMOS sensor. Conclusion: The X-ray counting system using radiographic images from a smartphone proposed in this research is an important basis for developing a radiation counting system, as well as other different techniques in the future.

A Multimedia for Skill Development: Using Tenses (Tower of Tense)

Fri, 03 May 2024 00:00:00 +0700

The aims of this research were: (1) to develop multimedia for Tense practice (2) to create multimedia Tense for junior secondary school review and evaluate a satisfaction of users. A development tools were GDevelop 5 program and GIMP 2.10.34 program. The 45 samples were evaluated satisfaction assessment form. A multimedia to practice Tense can work on mobile smart devices (Android operating systems). The Tower of tense (TOT) comprises 3 parts: Past Tense, Present Tense, and Future Tense. A player can control to create excitement and challenge from the character's walking and jumping, and a life force system. This research found that the user group was at the highest level of satisfaction (M= 4.29, SD=0.77). A multimedia to practice Tense (Tower of Tense) helps stimulate students' interest fun and enjoyable.

Analyzing Movie Posters using DBSCAN Technique Procedia Computer Science

Fri, 03 May 2024 00:00:00 +0700

This study uses Image Processing and Computer Vision techniques to analyze movie posters. It use Image Clustering and Image Augmentation to distinguish factors that influence the decision to watch a movie. The analysis uses DBSCAN and Resnet50 to classify data, and Dimension Reduction and Umap to reduce data size. The results of the analysis highlight the appeal of movie posters and indicate the factors that influence interest and decision-making in movie viewing.

The survey and analysis results found that the characteristics of movie posters are significant in assisting viewers’ decision-making, making them more rational in choosing movies and increasing their satisfaction in watching movies.