This experimental investigation of calcite growth quantifies relationships between solution supersaturation and the rates of step advancement. Using in situ fluid cell atomic force microscopy (AFM), we show that the movement of monomolecular steps comprising growth hillocks on {101#4} faces during the growth of this anisotropic material is specific to crystallographic direction. By quantifying ...

The kinetics of ruthenium thin film deposition via the hydrogen assisted reduction of bis(2,2,6,6-tetramethyl-3,5-heptanedionato)(1,5-cyclooctadiene)ruthenium(II) [Ru(tmhd)2cod] in supercritical carbon dioxide was studied. Deposition temperature was varied from 240 C to 280 C and the apparent activation energy was determined to be 45.3 kJ/mol. Deposition rates up to 30 nm/min were attained. The...

The framework ecological stoichiometry uses elemental composition of species to make predictions about growth and competitive ability in defined elemental supply conditions. Although intraspecific differences in stoichiometry have been observed, we have yet to understand the mechanisms generating and maintaining such variation. We used variation in phosphorus (P) content within a Daphnia specie...

The Gompertz function was formulated to represent an actuarial curve, yet it often fits growth of organisms, organs and tumors. Despite numerous attempts, no consensus has been forged about the biological foundation of the broad applicability of the model. Here we revisit the Gompertzian notion of the "power to grow" and equate it with growth fraction. Aside from conferring biological interpret...

The physiological behavior of Corynebacterium glutamicum in glucose-limited chemostat cultures was examined from both growth kinetics and enzymatic viewpoints. Metabolic fluxes within the central metabolism were calculated from growth kinetics and analyzed in relation to specific enzyme activities. At high growth rates, incomplete glucose removal was observed, and this was attributed to rate-li...

The submergence-tolerant species Rumex palustris (Sm.) responds to complete submergence by an increase in petiole angle with the horizontal. This hyponastic growth, in combination with stimulated elongation of the petiole, can bring the leaf tips above the water surface, thus restoring gas exchange and enabling survival. Using a computerized digital camera set-up the kinetics of this hyponastic...