Research - Molecules, Colloids and Particles

Particles Publications


Particles & Colloids



1999 Serra, T. and B.E. Logan. 1999. Collision frequencies of fractal bacterial aggregates with small particles in a sheared fluid. Environ. Sci. Technol. 33(13):2247-2251.

1998 Grossart, H.-P., M. Simon, and B.E. Logan. 1998. Formation of macroscopic organic aggregates (lake snow) in a large lake: The significance of transparent exopolymer particles, plankton and zooplankton. Limnol. Oceanogr. 42(8):1651-1672.

Li, X. U. Passow, and B.E. Logan. 1998. Fractal dimensions of small (15 to 200 µm) particles in eastern Pacific coastal waters. Deep-Sea Res. I, 45(1):115-131.

1997 Jackson, G.A., R. Maffione, D.K. Costello, A.L. Alldredge, B.E. Logan, and H.G. Dam.

1997. Particle size spectra between 1 µm and 1 cm at Monterey Bay determined using multiple instruments. Deep-Sea Res.I, 44(11):1739-1767.

Li, X. and B.E. Logan. 1997. Collision Frequencies of Fractal Aggregates with Small Particles by Differential Sedimentation. Environ. Sci. Technol., 31(4):1229-1236.

Li, X. and B.E. Logan. 1997. Collision Frequencies between Fractal Aggregates and Small Particles in a Turbulently Sheared Fluid. Environ. Sci. Technol., 31(4):1237-1242.

1996 Johnson, C.P., X. Li and B.E. Logan. 1996. Settling velocities of fractal aggregates. Environ. Sci. Technol., 30(6):1911-1919.

Jiang, Q. and B.E. Logan. 1996. Fractal dimensions of aggregates produced in laminar and turbulent shear devices. J. AWWA. 88(2):100-113. [Full color= 42 mB] [Greyscale=16mB]

1995 Logan, B.E. and J.R. Kilps. 1995. Fractal dimensions of aggregates formed in different fluid mechanical environments. Water Res. 29(2):443-453.

Logan, B.E., H.-P. Grossart, and M. Simon. 1994. Direct observation of phytoplankton, TEP, and aggregates on polycarbonate filters using brightfield microscopy. J Plankton Res., 16(12):1811-1815.

Logan, B.E. 1995. Comment on "Investigation of a sequential filtration technique for particle fractionation." by Droppo et al, Environ. Sci. Technol., 29(8):2166-2167.

Jackson, G.A., B.E. Logan, A.L. Alldredge, and H. Dam. 1995. Combining particle size spectra from a mesocosm experiment measured using photographic and aperture impedance (Coulter and Elzone) techniques. Deep-Sea Res. II, 42(1):139-157.

Logan, B.E., U. Passow, A.L. Alldredge, H.-P. Grossart, and M. Simon. 1995. Rapid formation and sedimentation of large aggregates is predictable from coagulation rates (Half-Lives) of transparent exopolymer particles (TEP). Deep-Sea Res. II, 42(1):203-214.

Li, X. and B.E. Logan. 1995. Size distributions and fractal properties of particles during a simulated phytoplankton bloom in a mesocosm. Deep-Sea Res. II, 42(1):125-138.

1994 Logan, B.E., H.-P. Grossart, and M. Simon. 1994. Direct observation of phytoplankton, TEP, and aggregates on polycarbonate filters using brightfield microscopy. J Plankton Res., 16(12):1811-1815.

Kilps, J.R., B.E. Logan, and A.L. Alldredge. 1994. Fractal dimensions of marine snow determined from image analysis of in situ photographs. Deep-Sea Res. 41(8):1159-1169.

Logan, B.E., U. Passow and A.L. Alldredge. 1994. Variable retention of diatoms on screens during size separations. Limnol. Oceanogr. 39(2):390-395.

Passow, U., A.L. Alldredge, and B.E. Logan. 1994. The role of particulate carbohydrate exudates in the flocculation of diatom blooms. Deep-Sea Res. 41(2):335-357.

1993 Alldredge, A.L., Passow, U, and B.E. Logan. 1993. The abundance and significance of a class of large, transparent organic particles in the ocean. Deep-Sea Res. 40(6):1131-1140.

Logan, B.E. 1993. Theoretical analysis of size distributions determined using screens and filters. Limnol. Oceanogr. 38(2):372-381.

1991 Jiang, Q. and B.E. Logan. 1991. Fractal dimensions of aggregates determined from steady-state size distributions. Environ. Sci. Technol., 25(12), 2031-2038.

Logan, B.E. and D.B. Wilkinson. 1991. Fractal dimensions and porosities of Zoogloea ramigera and Saccharomyces cerevisae aggregates. Biotechnol. Bioengin., 38(4):389-396.

1990 Logan, B.E. and Q. Jiang. 1990. A Model for determining molecular size distributions of DOM. J. Envir. Engin. Div., ASCE, 116(6):1046-1062.

Logan, B.E. and J.W. Dettmer. 1990. Increased mass transfer to microorganisms with fluid motion. Biotechnol. Bioengin., 35(11):1135 -1144.

Logan, B.E. and D.B. Wilkinson. 1990. Fractal geometry of marine snow and other biological aggregates. Limnol. Oceanogr., 35(1):130-136.

1989 Logan, B.E. and A.L. Alldredge. 1989. The increased potential for nutrient uptake by flocculating diatoms. Mar. Biol. 101(4):443-450.

1988 Logan, B.E. and J.R. Hunt. 1988. Bioflocculation as a microbial response to substrate limitations. Biotechnol. Bioeng., 31:91-101.

1987 Logan, B.E. and J.R. Hunt. 1987. Advantages of microbial growth in permeable aggregates in marine systems. Limnol. Oceanogr., 32(5):1034-1048.


Bruce E. Logan |  Department of Civil and Environmental Engineering | 231Q Sackett Building
Phone: 814-863-7908 | Fax: 814-863-7304 
The Pennsylvania State University, University Park, PA 16802