1. A study and construction of neodymium yag laser
Pichet Limsuwan, Prapard Prisuwanna and Chonjaraun Tipsuwan

2. A study and construction of transversely excited atmospheric-pressure carbondioxide laser
Witee Srimongkol, Kobchai Dechan and Pichet Limsuwan

3. Effects of solids residence time on phosphorus removal with oxygen or nitrate
Chalermraj Wantawin and Vasana Peetamnongsin

4. On the experimentation of data approximation using the discrete wavelet transform compared with the discrete cosine transform
Manit Kiatkhamjaikajorn, Prapakorn Suwanna and Manas Sangworasil

5. Purification .and properties of nad-dependent l-lactate dehydrogenase from a rhizopus oryzae mutant
W. Suntornsuk and Y. D. Hang

6. Resins for, removal of heavy metals modified from natural rubber
Pleonpit Boochathum and Praweena Tira

7. The application of state variable feedback control to fermentation process
Pipat Titapand and Ake Chaisawadi