Climate change and the increasing unpredictability of environmental conditions have aggravated the shortage of animal feed crops during the dry season. This study examines effect of packaging thickness on the quality of corn silage during long-term storage, to maintain its nutritional value during feed shortages. The results show that packaging with thicknesses of 80, 120, 150, and 200 microns effectively maintain good physical quality, including odor, texture, color, and pH levels, during the 0–21day storage period. The silage had a fermented like fruit flavor or vinegar flavor, a silage texture, and well-preserved leaves and stems. Its color remained yellowish-green, with pH values between 3.7 and 4.7. Additionally, lactic acid analysis found that silage in 200-micron-thick packaging for 21 days had the highest lactic acid content (5.64%). However, there were no significant differences in the nutritional value of the silage across different packaging thicknesses
ปัจจุบันแนวโน้มการเลี้ยงโคเนื้อและโคนมของประเทศไทยเพิ่มขึ้นอย่างต่อเนื่อง โดยในปี 2565 มีจำนวนโคเนื้อเพิ่มขึ้นเป็น 9,394,111 ตัวจาก 6,583,106 ตัวในปี 2554 และจำนวนโคนมเพิ่มขึ้นจาก 560,659 ตัว เป็น 812,235 ตัว (กรมปศุสัตว์, 2565) ทำให้ปัญหาการขาดแคลนพืชอาหารสัตว์ในฤดูแล้งทวีความรุนแรงยิ่งขึ้น การทำหญ้าหมัก (silage) เป็นการถนอมอาหารสัตว์ที่นิยมชนิดหนึ่ง โดยเป็นการนำพืชอาหารสัตว์ เช่น ต้นข้าวโพด ต้นข้าว ฟ่าง หญ้าหรือถั่วต่าง ๆ ที่เก็บเกี่ยวในขณะที่มีความชื้นพอเหมาะมาหมักเก็บไว้ในสภาพสุญญากาศ ซึ่งเป็นการถนอมพืชอาหารสัตว์ไว้ในสภาพหมักดอง เมื่อพืชอาหารสัตว์สด ๆเปลี่ยนสภาพเป็นหญ้าหมักแล้วจะสามารถอยู่ได้เป็นเวลานานโดยคุณค่าทางอาหารไม่เปลี่ยนแปลง (สายัณห์, 2547) ข้าวโพดหมักยังมีคุณสมบัติให้ผลผลิตและพลังงานสูงกว่าพืชอาหารสัตว์ส่วนใหญ่ การถนอมพืชอาหารสัตว์ ในรูปแบบของพืชหมัก (Silage) เป็นสิ่งจำเป็นในการเลี้ยงโคนมในปัจจุบัน เพื่อทดแทนการขาดแคลนอาหารหยาบคุณภาพดี สำหรับโคนมในช่วงฤดูแล้ง เป้าหมายหลักในการเก็บถนอมพืชอาหารสัตว์ คือ ทำให้พืชที่เก็บถนอมไว้นั้นยังมีคุณค่าทางอาหารใกล้เคียงกับของเดิมมากที่สุดหรือมีการสูญเสียน้อยที่สุดและสัตว์สามารถกินได้ดี และการเลือกใช้บรรจุภัณฑ์ที่เหมาะสมจะช่วยรักษาคุณภาพและสามารถป้องกันไม่ให้เกิดความเสียหายได้ ข้าวโพดหมักจึงเป็นพืชอาหารสัตว์ที่มีความสำคัญเป็นอย่างมาก ซึ่งการเลี้ยงโคนมต้องมีอาหารหยาบที่มีคุณภาพจะส่งผลให้คุณภาพน้ำนมมีสารอาหารที่สมบูรณ์ ดังนั้น การศึกษานี้จึงมุ่งศึกษาผลของความหนาบรรจุภัณฑ์ต่อคุณภาพข้าวโพดหมักอาหารสัตว์
คณะวิทยาศาสตร์
This special problem aims to compare the performance of machine learning methods in time series forecasting using lagged time periods as independent variables. The lagged periods are categorized into three groups: lagged by 10 units, lagged by 15 units, and lagged by 20 units. The study employs four machine learning methods: Decision Tree (DT), Random Forest (RF), K-Nearest Neighbors (KNN), and Support Vector Machine (SVM). The time series data simulated as independent variables diverse including characteristics: Random Walk data, Trending data, and Non-Linear data, with sample sizes of 100, 300, 500, and 700. The research methodology involves splitting the data into 90% for training and 10% for testing. Simulations and analysis are performed using the R programming language, with 1,000 iterations conducted. The results are evaluated based on the average mean squared error (AMSE) and the average mean absolute percentage error (AMAPE) are calculated to identify the best performing method. The research findings revealed that for Random Walk data, the best performing methods are Random Forest and Support Vector Machine. For Trend data, the best performing methods are Random Forest. For Non-Linear data, the best performing methods are Support Vector Machine. When tested with real-world data, the results show that for the Euro-to-Thai Baht exchange rate, the best methods are Random Forest and Support Vector Machine. For the S&P 500 Index in USD, the best performing methods are Random Forest. For the Bank of America Corp Index in USD, the best performing methods are Support Vector Machine.
คณะวิศวกรรมศาสตร์
This project objectives are 1) investigate the utilization of coconut husk and rubber latex in construction applications, 2) determine the optimal ratio of coconut husk and rubber latex mixtures, and 3) test the properties of ceiling panels made from coconut husk and rubber latex composite under Thai Industrial Standard (TIS) 219-2552 for gypsum ceiling boards. The methodology involves the following steps: 1) planning the project, 2) designing the mixture for the coconut husk and rubber latex composite ceiling panels, 3) producing the composite ceiling panels, 4) testing the product for properties according to TIS 219-2552 for gypsum ceiling boards, and 5) summarizing the test results.
คณะครุศาสตร์อุตสาหกรรมและเทคโนโลยี
Industrial Education and Technology, King Mongkut's Institute of Technology Ladkrabang has a vision for sustainable excellence. The mission is to develop learners to be ready for the digital world, develop educational innovations using research as a base, strategic management with good governance, and academic services that benefit society. In this activity, the group of students joined with the Embassy of the Russian Federation in the Kingdom of Thailand, the working group of the Thai Silk and Culture Promotion Association, and the working group of the National Research Office (NRCT) to integrate knowledge to design a silk outfit that combines Thai and Russian cultures, create a network of cooperation in arts, culture, technology, innovation, and dissemination of knowledge and the beauty of Thai silk. The objective is to develop the potential of teachers and students in creative design, listen to the work guidelines from the working group of the Thai Silk and Culture Promotion Association, the working group of the National Research Office (NRCT) via an online meeting. The team of teachers and students from King Mongkut's Institute of Technology Ladkrabang under the name of the "Love Silk" group designed a Thai silk outfit that combines cultures with the identity of Thai silk and studying traditions and cultures of the Russian Federation's clothing. They studied related literature and research documents and integrated knowledge into the design process, inspired by the concept of the Rajapataen outfit. Since the reign of King Chulalongkorn (Rama V) in 1872, together with the clothing culture of the Russian Federation, emphasizing Thai silk, this concept has gone through the process of creating and selecting the design concept (Concept Generation and Selection). The concept received from the embassy was first submitted for feedback on July 25, 2024. There was a suggestion to add more uniqueness to Thai silk through a fashion show presentation by the wife and grandson of the Ambassador of the Russian Federation. Therefore, the designed outfits are 1 set of women's clothes and 1 set of boys' clothes. The women's set has an inner shirt adapted from the royal outfit using silk fabric, Kon Ka-ed pattern, with two separate pieces: 1 shirt and 1 skirt. The jacket is a modified long suit style, plain silk, dark pink and red. The boys' set has a long-sleeved shirt adapted from the contemporary royal style, tailored with cream silk, long slacks tailored with raw betel silk, and a collarless coat with blue silk and lotus pattern. Adapted from the Rajapattan suit with a long collar in an international style. On August 2, 2024, the designed suit and the prototype of the raw fabric suit were brought to the ambassador's wife and nephew to try on. On August 30, 2024, the ambassador was met for the 4th time to bring the silk suit that was cut into a real silk suit. The shirt was given to the ambassador's wife and nephew to try on. It was worn to join the fashion show in the 13th "Thai Silk to the World" Silk Festival at the Naval Auditorium, where lecturers and students from the Faculty of Industrial Education and Technology, King Mongkut's Institute of Technology Ladkrabang, joined the fashion show in the finale round, which proceeded smoothly. After the event, the working group of the Thai Silk and Culture Promotion Association brought the clothes designed and tailored by the "Rak Prae Mai" team to exhibit Thai Silk to the World Exhibition from September 1-8, 2024 at the Emsphere Shopping Mall. The team summarized the report and compiled a complete report. In the implementation of this project, the Faculty of Industrial Education and Technology, King Mongkut's Institute of Technology Ladkrabang has received support and facilitation throughout the project. The budget support from the National Research Council of Thailand (NRCT), the support of fabrics for sewing from the Thai Silk and Culture Promotion Association, and the information for designing valuable silk dresses from the Embassy of the Russian Federation in the Kingdom of Thailand are very important factors that made this operation a success. It is a very important experience for the team of teachers and students of Industrial Education and Technology, King Mongkut's Institute of Technology Ladkrabang. We sincerely hope to receive good cooperation in the future.