A5036599837- Microbial Community Ecology and Physiology
- Protist diversity and phylogeny
- Environmental DNA in Biodiversity Studies
- Optical measurement and interference techniques
- Advanced Measurement and Metrology Techniques
- Thermography and Photoacoustic Techniques
- Coral and Marine Ecosystems Studies
- Geophysics and Gravity Measurements
- Polar Research and Ecology
- Surface Roughness and Optical Measurements
- Methane Hydrates and Related Phenomena
- Coastal wetland ecosystem dynamics
- Statistical Mechanics and Entropy
- Image Processing Techniques and Applications
- Marine and fisheries research
- Statistical and numerical algorithms
Nanyang Technological University
2022-2025
National University of Singapore
1995-2020
In recent years, metabarcoding has become the method of choice for investigating composition and assembly microbial eukaryotic communities. The number environmental data sets published increased very rapidly. Although unprocessed sequence files are often publicly available, processed data, in particular clustered sequences, rarely available a usable format. Clustered sequences reported as operational taxonomic units (OTUs) with different similarity levels or more recently amplicon variants...
Abstract Photosynthetic microbial eukaryotes play a pivotal role as primary producers in the Arctic Ocean, where seasonal blooms within and below ice are crucial phenomena, contributing significantly to global production biogeochemical cycling. In this study, we investigated taxonomic composition of sympagic algae phytoplankton communities during under-ice spring bloom using metabarcoding 18S rRNA gene. Samples were obtained from three size fractions over period nearly months at an camp...
Photosynthetic microbial eukaryotes play a pivotal role as primary producers in the Arctic Ocean, where seasonal blooms within and below ice are crucial phenomena, contributing significantly to global production biogeochemical cycling. In this study, we investigated taxonomic composition of sympagic algae phytoplankton communities during under-ice spring bloom using metabarcoding 18S rRNA gene. Samples were obtained from three size fractions over period nearly months at an camp deployed on...
Abstract In recent years, metabarcoding has become the method of choice for investigating composition and assembly microbial eukaryotic communities, an increasing number environmental datasets are being published. Although unprocessed sequence files often publicly available, processed data, i.e. sequences clustered as operational taxonomic units (OTUs) or amplicon variants (ASVs) rarely at hand in a comparable format. This hampers comparative studies between different environments datasets,...
Abstract The principle behind the formation of high resolution live fringe patterns by real-time shearography is presented. It shown that linear and nonlinear photographic recordings both yield instantaneous which depict surface displacement gradient object. However, in theory, recording results lower visibility compared with recording. In either case, requires a simple optical setup eliminates need for Fourier filtering during read-out. also found characteristics double exposure methods...
Abstract Phase shifting shearography is achieved by translating the wedge at iris plane of image-shearing camera parallel to shearing direction. For a particular angle used, amount phase shift linearly proportional translation. Furthermore, sensitivity increases with angle. The experimental results for translation corresponding 2π radian deviate less than 7% from derived theoretical prediction range angles used. This technique particularly developed determination fractional fringe order in...
Abstract The principle behind the formation of high resolution live fringe patterns by real-time shearography is presented. It shown that linear and nonlinear photographic recordings both yield instantaneous which depict surface displacement gradient object. However, in theory, recording results lower visibility compared with recording. In either case, requires a simple optical setup eliminates need for Fourier filtering during read-out. also found characteristics double exposure methods...