Determination of the Physical Properties of Oil Sands Components using Scanning Probe Microscopy
- PDF / 368,665 Bytes
- 6 Pages / 432 x 648 pts Page_size
- 99 Downloads / 159 Views
'HWHUPLQDWLRQRIWKH3K\VLFDO3URSHUWLHVRI2LO6DQGV&RPSRQHQWVXVLQJ6FDQQLQJ3UREH 0LFURVFRS\
5DYL*DLNZDG7LQX$EUDKDP$KDUQLVK+DQGH)DWHPHK%DNKWLDUL6LGGKDUWKD'DV 7KRPDV7KXQGDW 1 Department of Chemical and Materials Engg, University of Alberta, Edmonton, 2Department of Mechanical Engg, University of Maryland, Baltimore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µOLTXLGOLNH¶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±@ RQ PLFD DQG VLOLFRQ ZDIHUV DUH G
Data Loading...