22. Onnis-Hayden, A., Majed, N. and Gu, A.Z. (2009) Decoupling the Microbial Populations for Phosphorus and Nitrogen Removal in Integrated Fixed-Film Activated Sludge Enhanced Biological Phosphorus Removal (IFAS-EBPR) System. (in submission)

21. Onnis-Hayden, A., Cherchi, C and Gu, A.Z. (2009) The selection of Organic Sources for Denitrification: Testing and Practical Implication for Their Application in WWTPs. (in submission)

20. Onnis-Hayden, A., Schramm, A., Dair, D. and Gu, A.Z. (2009) Kinetics And Nitrifying Populations In Nitrogen Removal Processes At A Full-Scale Integrated Fixed-Film Activated Sludge (IFAS) Plant. (in submission)

19. Majed, N., Matthäus, C., Deim, M. and Gu, A.Z. (2009) Evaluation of  Intracellular Polyphosphate Dynamics in Enhanced Biological Phosphorus Removal Process using Raman Microscopy. Environ. Sci. Technol. (in press)

18. Wan, Y., Gu, A.Z., He, M., Li, D. and Shi, H.C. (2009)  Development of a  Combined Immunomagnetic Separation and Reverse Transcription-Quantitative PCR Assay for Sensitive Detection of Infectious Rotavirus in Water Samples. Appl. Environ. Microbiology (in review)

17. Cherchi, C., Onnis-Hayden, A., Shawabkeh, I.E. and Gu, A.Z. (2009) Implication of Utilizing Different Carbon Sources For Denitrification in Wastewater Treatments. Water Environ. Res. (accepted, in press)

16. Onnis-Hayden, A., H. F. Weng, M. He, S. Hansen, V. Ilyin, K. Lewis & A. Z. Gu (2009) Prokaryotic Real-Time Gene Expression Profiling for Toxicity Assessment. Environmental Science & Technology, 43(12), 4574-458

15. Li, D., Gu, A.Z., He, M. and Shi, H.C. (2009) UV inactivation and resistance of Rotavirus Evaluated by Integrated Cell Culture and Real-time RT-PCR Assay. Water Research (accepted, in press)

14. Hellweger, F. L., Bucci, V., Litman, M. R., Gu, A. Z., Onnis-Hayden, A. (2009). Biphasic Decay Kinetics of Fecal Bacteria in Surface Water: Resistant Fraction or Density Effect? ASCE J. Environ. Engineer., Vol. 134, No. 5, May 2009, pp. 372-376.

13. McMahon, K. D., A. Z. Gu, R. Nerenberg & B. M. Sturm (2008) Molecular Methods in Biological Systems. Water Environment Research, 80(10), 929-961.

12. Gu, A.Z., A. Saunders, J.B. Neethling, H.D. Stensel, and L.L. Blackall. (2008) Functionally Relevant Microorganisms to Enhanced Biological Phosphorus Removal Performance At Full-Scale Wastewater Treatment Plants in the US. Water Environ. Res. Vol.80, No.8 p678-689

11. Gu, A.Z. and J.B. Neethling. (2008) Investigation and Modeling UV-catalyzed Chlorine Decay in Disinfection Contact Basin at Full-Scale Wastewater Treatment Plants. Water Environ. Res.  Vol. 80, No.2, p179-185 

10. He, S., A.Z. Gu, and K.D. McMahon. (2008) Progress towards explaining differences in distribution of Accumulibacter among full-scale enhanced biological phosphorus removal systems. Microb Ecol., 55:229–236 

9. McMahon, K. D., A. Z. Gu, R. Nerenberg & L. T. Angenent (2007) Molecular methods in biological systems. Water Environment Research, 79(10), 1109-1151.

8. Benisch, M., Clark, D., Neethling, J.B., Fredrickson, H.S., Gu, A. (2007). Tertiary Phosphorus Removal Pilot Tests Technology Limits In Coeur D’Alene, ID. Water Practice, 1(13), 1-13.

7. Gu, A.Z., Pedros, P. B., Kristiansen, A., Onnis-Hayden, A. and Schramm, A. (2007)Nitrifying Community Analysis In A Single Submerged Attached Growth Bioreactor For Treatment Of High-Ammonia Waste Stream. Water Environ. Res.  Vol. 79, No.13, p2510-2519.

6. Angenent, L. T., K. D. McMahon, A. Z. Gu & R. Nerenberg (2006) Molecular methods in biological systems. Water Environment Research, 78(10), 1084-1118 (review).

5. He, S., A.Z. Gu, and K.D. McMahon. Fine-Scale Differences Between Rhodocyclus-Like Bacteria In Enhanced Biological Phosphorus Removal Activated Sludge (2006). Water Sci. and Technol. Vol. 54, No.1, 111-117

4. Walker, C.B., A.Z. Gu, H.D. Stensel, and S.E. Strand.  A Biological Method for Synthesizing ¹⁴C-Vinyl Chloride. (2004). J Label Compd Radiopharm, 47: 1–8.

3. Gu, A.Z., B. Hedlund, J. Staley, S. Strand, and H.D. Stensel. (2004) Analysis and Comparison of the Microbial Community Structures of Two Enrichment Cultures Capable of Reductively Dechlorinating TCE and cis-DCE.  Environ.  Microbiology, V6(1), 45-54.

2. Gu, A.Z, H.D. Stensel, J. Pietari, and S. Strand. (2003) Vinyl Bromide as a Surrogate for Determining Vinyl Chloride Reductive Dechlorination Potential. Environ. Sci. & Technol. 37(19) 4410-4416.

1. Basu, B., A.Z. Gu, and K. Shilinsky. (1999) Application of Packed Scrubber for Air Emissions Control in Municipal Wastewater Treatment Plants.  Environ. Progress, Vol.17, No. 1. 9-18.