C. Yuangyai

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Careless disposal of untreated industrial waste on surface water might affect the physical, chemical and biological characteristics of river ecosystem. U-tapao, one of the main rivers of Songkhla lake basin of Thailand is not exceptional one and seriously polluted by industrial waste disposal which come out from different factories on the both sides of(More)
Statistical design of experiments is widely used among scientists and engineers to understand influential factors in a laboratory or manufacturing process. One of the underlying principles of using the statistical design of experiments method is randomisation, each run of experimental settings will be determined completely unsystematically. In practice,(More)
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