Thian Yew Gan

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Naphthenic acids, NAs (classical formula C(n)H(2n+z)O(2), where n is the carbon numbers, z represents zero or negative even integers), found in oil sands process waters (OSPWs), are toxic to aquatic environments depending upon several factors such as pH, salinity, molecular size and chemical structure of NAs. Among various available methods, biodegradation(More)
Climate change exerts great influence on streamflow by changing precipitation, temperature, snowpack and potential evapotranspiration (PET), while human activities in a watershed can directly alter the runoff production and indirectly through affecting climatic variables. However, to separate contribution of anthropogenic and natural drivers to observed(More)
Aalto University, P.O. Box 11000, FI-00076 Aalto Author Timo A. Räsänen Name of the doctoral dissertation Hydrological changes in the Mekong River Basin – The effects of climate variability and hydropower development Publisher School of Engineering Unit Department of Civil and Environmental Engineering Series Aalto University publication series(More)
Wavelet-based empirical orthogonal function WEOF analysis was used to analyze the nonstationary spatial, temporal, and frequency regimes of the regional variability in southern African summer October–March rainfall. The leading modes of rainfall variability were then used to establish associations with gridded scale-averaged wavelet power of the sea surface(More)
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