This research aims to evaluate the efficiency of nano-type oxygen diffusers at different pump power levels in sea bass nursery ponds. The study examines how varying power levels affect dissolved oxygen distribution in the water and their impact on the health, growth, and survival rates of sea bass. The findings indicate that pump power levels influence dissolved oxygen concentration, with the optimal power level improving oxygen distribution in the pond. This enhancement leads to higher survival and growth rates for sea bass. The results provide valuable insights for selecting appropriate oxygen diffusers and pump power levels in fish nursery pond systems. The experiment consisted of two conditions: 1. Without fish – This condition assessed the oxygenation capacity, oxygen transfer coefficient, oxygen transfer rate, and oxygen transfer efficiency of pumps at three different power levels. 2. With fish – This condition evaluated whether the oxygen supplied by pumps at three power levels was sufficient, based on the growth rate and survival rate of the fish in the pond. Blood counts were conducted to assess the immune response. The collected data were statistically analyzed using the RCBD method for the condition without fish and the CRD method for the condition with fish, employing SPSS software.
ประเทศไทยได้ประสบปัญหาในเรื่องของภัยธรรมชาติ ปัญหาการเปลี่ยนเเปลงสภาพภูมิอากาศ โดยเฉพาะปัญหาอุทกภัยและภัยเเล้ง สภาพอากาศแปรปรวน และยังมีปัญหาในด้านการทำประมงที่จำกัดดังนั้นการทำฟาร์มเลี้ยงสัตว์น้ำเเบบลดความเสี่ยงจึงเป็นทางออกในการรักษาความมั่นคงของอาหาร ในปัจจุบันปลาที่สามารถปรับตัวให้อยู่ในน้ำจืดหรือน้ำกร่อยได้และเป็นที่นิยมในการรับประทานได้เเก่ปลากะพงขาว เนื่องจากเลี้ยงง่ายโตเร็ว เนื้อปลารสชาติดี และมีราคาสูงพอคุ้มค่ากับการลงทุน โดยศึกษาจากการใช้อุปกรณ์สร้างออกซิเจนชนิดหัวนาโนบับเบิ้ลเพื่อศึกษาว่าอุปกรณ์ให้ออกซิเจนชนิดหัวนาโนกับขนาดกำลังปั๊มน้ำที่ต่างกันขนาดใดมีความสามารถทำให้ออกซิเจนละลายในน้ำดีมากที่สุด อัตราการถ่ายเทออกซิเจนในน้ำ ค่าสัมประสิทธิ์ออกซิเจนที่ละลายในน้ำได้มีประสิทธิภาพมากที่สุด วัดความเจริญเติบโต อัตรารอดของปลากะพงและภูมิคุ้มกันของปลากะพง ประสิทธิภาพในการให้ ออกซิเจน ในบ่ออนุบาลปลากะพงได้ดีที่สุดและมีผลกระทบน้อยมากที่สุด
คณะสถาปัตยกรรม ศิลปะและการออกแบบ
In the world of blood donation, there are 2 types of people: those who donate blood and those who don't. Most campaigners emphasize how to persuade more people to donate blood and recruit more new blood donors. We believe that even though such focus is important, there're more critical aspects that might have been neglected, which is: for those who have already made up their minds to be blood doners, will they be successful in donating when the time comes? According to our studies, only 63 % of attempted doners are successful. Regrettably, 37 % has to go home disappointed as their bodies are not fit for the conditions required by Red Cross medical staff at blood donation centers (which include some most basic preparations such as low-fat food intake and 8-hours sleep on the night before). Our campaign, ‘Blood in Need, Buddy Indeed’, focuses on 2 aspects. Firstly, to persuade more people to donate blood. Secondly, for those who have made up their minds to donate blood, we will provide necessary support (both body and mind) so that they are fully prepared and successful in donating blood when the time comes via networks of systems, staffs and the newly designed and prototype of the application ‘Blood D’. Our campaign covers the whole ‘before/during/after’ experience of users (as blood doners). Support includes assessment of their current condition whether they are within the requirement of Red Cross Blood Bank. ‘Blood D’ will also provide relevant information on blood donating events, such as locations, and time booking. Once sign-up, the application “Blood D” will sent friendly reminder and clear infographic on how to prepare their bodies as daily notifications during the 7 days countdown. This is to ensure that the users’ blood will be ‘D’ (homophone of the Thai word ‘ดี’ which mean ‘good’ and at the same time playing on the word ‘ Buddy’) or be the ‘good blood’ that can save lives for those in need. After organizing 4 blood donation events both within and outside the KMITL. The numbers of successful blood doners have increased from 63 % to 78 % (this number is the average of 4 events, with the most successful event of 89%). The campaign has won the first runner up in national blood donation campaign competition. It is highly anticipated that once the application “Blood D” is fully launched, it will help increase the amount of blood collected up to 15% with the same numbers of existing doners.
วิทยาเขตชุมพรเขตรอุดมศักดิ์
This project focuses on developing a work tracking system for team members. Python is used to extract data from Excel files and import it into a SQL Server database for systematic data management. The system includes a function to notify task status via LINE and displays reports via Power BI, allowing supervisors to track progress and evaluate team members' performance efficiently. Additionally, the system helps promote work and time management skills for team members.
คณะเทคโนโลยีการเกษตร
Mangosteen peel (Garcinia mangostana Linn.) extract using hot water (MPE) has been shown to have antibacterial potential in freshwater sea bass (Lates calcarifer) larvae infected with Aeromonas hydrophila. In vitro studies showed that MPE has a minimum inhibitory concentration (MIC) of 25 ppm and a minimum bactericidal concentration (MBC) of 25 ppm. In vivo, sea bass larvae were immersed in various concentrations of MPE at 0 ppm (control), 20 ppm, 40 ppm and 60 ppm, respectively, for 7 days with A. hydrophila. The results showed that the MPE-treated group had a higher survival rate compared to the control group. Hematological parameters showed that the MPE-treated group had significantly increased red blood cell (RBC), white blood cell (WBC) and hemoglobin (Hb) concentrations compared to the control group. In addition, the water quality parameters were not significantly different, except for ammonia concentration, with MPE having an ammonia concentration of 60 ppm being the lowest. All results can indicate that MPE can improve the antibacterial potential and the culture potential of sea bass larvae.