yrammuS 要概96Worata KLINSAWAT97Patiya KEMACHEEVAKUL98Anucha KAMJINGImpacts of Human Disturbance on Genetic Connectivity and Diversity of Coastal and Riverine Populations of Irrawaddy Dolphin (Orcaella brevirostris) in Thailand and Indonesia(Project 2020)Photocatalytic Degradation of Hazardous Volatile Organic Compound Using an Innovative Reactor with Nitrogen-Doped Photocatalytic-Coated Glass Sheets Under Visible and Solar Light Irradiations(Project 2020)Threat Assessment and Management Prioritization for Otters’ Long-Term Conservation in Coastal Wetlands of Southern Thailand(Project 2020)71values. In addition, fracture behaviors of different welded samples were evaluated with regard to occurred microstructural characteristics. It was found that the dominant local failure mechanism of laser welded steel- aluminum joints was strongly governed by the inhomogeneity of chemical and mechanical properties of their fusion zones that could be precisely described by the proposed model.The Irrawaddy dolphin (Orcaella brevirostris) occupies freshwater and coastal habitat across Asia. Despite wide distribution, Thailand and Indonesian populations are in decline and susceptible to genetic diversity loss. We applied population genetics based on mitogenome and microsatellite to examine historical environmental impacts and assess the recent anthropogenic disturbance on genetic diversity, effective size and gene flow among riverine and coastal populations. The Indonesian population had the lowest diversity compared to Thailand with high population differentiation (FST = 0.6622, P<0.0001). The Songkhla Lake and coastal Lower Gulf populations showed the lowest differentiation, which is consistent with an absence of biogeographic barrier and maintenance of historical dispersal and gene flow. MtDNA phylogenetic analyses revealed close relationships between Thailand and Indonesia, supporting recent radiation and eastward Pleistocene recolonization from Thailand during middle Pleistocene. However, low microsatellite diversity raises conservation concern and supports management strategies aiming to reduce impacts of genetic and demographic stochasticity.Benzene is well known as a toxic and carcinogenic air pollutant, which is mainly emitted from industrial processes, vehicles, and residential activities. TiO2-based photocatalysis is becoming one of the most promising solutions for the treatment of benzene in the ambient air. This study aims to investigate the photocatalytic activity of N-doped TiO2 film coated on glass sheets for the degradation of gaseous benzene under visible light irradiation. N-doped TiO2 was synthesized through the sol-gel method and then coated on both sides of glass sheets by the doctor blade technique. N-doped TiO2 films showed narrower bandgaps as compared with the TiO2 reference. The results demonstrated that the removal efficiency of benzene depended on the reaction condition, nitrogen dopant content, irradiation time, and light source. Moreover, the N-doped TiO2 film coated on glass sheets can be reused without decreasing efficiency. The maximum removal efficiency of benzene in the photocatalysis test was 52%.Wildlife conservation management requires information in both animal and human dimensions especially for animals having habitats overlap with human habitation. We conducted interview in five provinces in southern Thailand along the Andaman Coast between 2020-2021 to assess direct threat from human to two otter species, and identify management scheme for each area. Within the past ten years, both Asian Small-clawed Rep. Grant. Res., Asahi Glass Foundation (2022)
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