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รัฐประศาสนศาสตรมหาบัณฑิต (รัฐประศาสนศาสตร์), 2566 ; The purpose of this research is to 1) investigate air pollution issues in the village of Moo 11, Khlong Hae Subdistrict, Songkhla Province; 2) examine obstacles that have hampered previous attempts to solve these problems; and 3) propose future solutions through collaborative management. The qualitative research methods were employed. Document research, in-depth interviews, and focus group discussions were used to collect data. The key informants for this study are 25 people from different sectors in the areas, including the municipality, community, civil society organization, and manufacturing companies. Data source triangulation was used to validate the data, which were then analyzed using content analysis methods. The following are the study's findings. 1) The major sources of air pollution in this village are dust from the factories in the area, dust from trucks that blow into residences, and health problems caused by the dust. 2) There is currently no formal, collaborative, or proactive mechanism in place to address this issue. 3) This study also reveals that there are some impediments to previous attempts to solve the problems. These include a lack of a dust spreading prevention system in construction companies, climate variability, a lack of public participation due to fear of influential people in the area, a lack of seriousness on the part of village leaders to solve the problem, a lack of concern for people's health in construction companies, and a lack of experts in air pollution in the municipality. 4) In order to improve the management of air pollution in this community, researchers collaborated with residents and stakeholders to develop a mechanism, communication, and process for problem solving based on a collaborative approach. Setting up a four-party committee to monitor the air pollution situation, assigning clear responsibilities and authority to each party, creating a communication channel for this committee using Application Line, and ...

วิทยาศาสตรมหาบัณฑิต (การจัดการทรัพยากรทะเลและชายฝั่ง), 2565 ; Coral bleaching events in global and regional scales have seriously affected on coral mortality and their ability to recover. There is spatial variability in bleaching response in Thai’s water reefs based on their thermal history or environmental conditions. In cellular scale, coral and its zooxanthellae would be able to adapt or resist to environmental conditions such as higher sea surface temperature and light. The aim of this study was to investigate the effects of elevated temperature and light on photosynthesis and growth of zooxanthellae from different environmental conditions and Study the trend of coral recovery when exposed to light stress and increased temperature of Pocillopora acuta. Coral nubbins from different environmental condition, Maiton Island and Panwa Cape, Phuket, Thailand were collected and exposed to two experimental sets: increasing of temperature and light response experiment and limiting of temperature experiment. The results showed that synergistic effects of stress were observed on P. acuta from both sites decreased photosynthesis performance, loss of zooxanthellae association and reduction of chlorophyll concentration, especially HTAL, HTHL and 33ºC treatments. They were always elevated temperature which was the main factor affecting coral and minor factor was light. In addition, coral growth was gradually reduced, weakened, discolored and some corals nubbins were covered with algae, especially, coral nubbins from Maiton Island. However, coral nubbins from Panwa Cape showed an ability to recover when temperature was reduced. Therefore, we suggested that corals from Panwa Cape was more resistant than Maiton Island under same stressors leading to difference capacity to survive after coral bleaching event. ; ปรากฏการณ์ปะการังฟอกขาวในระดับโลกและระดับภูมิภาคส่งผลอย่างร้ายแรงต่อการตาย ของปะการังและความสามารถในการฟื้นตัวของปะการัง การฟอกขาวของปะการังในน่านน้ำไทยใน ...