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Flow of high‐concentration suspensions through fractures is important to a range of natural and induced subsurface processes where fractures provide the primary permeability (e.g., mud volcanoes, sand intrusion, and hydraulic fracturing). For these flows, the simple linear relationship between pressure gradient and flow rate, which applies for viscous‐dominated flows of Newtonian fluids, breaks down...
There are few factors more important to the mechanisms of evolution than stress. The stress response has formed as a result of natural selection, improving the capacity of organisms to withstand situations that require action. The ubiquity of the cellular stress response suggests that effective mechanisms to counteract stress emerged early in the history of life, and their commonality proves how vital...
A novel tungsten-nickel ohmic contact metallization on 4H-SiC and 6H-SiC capable of surviving temperatures as high as 900°C is reported. Preliminary results revealed the following: (1) ohmic contact on n-type 4H-SiC having net doping levels (Nd's) of 1.4 and 2 × 1019 cm-3, with specific contact resistances ρsNd's of 7.69 × 10-4 and 5.81 × 10-4 Ω · cm2, respectively, after rapid thermal annealing (RTA),...
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