Crystallization kinetics of sea-salt aerosols studied by high-speed photography

Sulfate Formation in Sea-Salt Aerosols: Constraints from Oxygen Isotopes

[1] We use observations of the mass-independent oxygen isotopic composition (DO) of sulfate in the marine boundary layer (MBL) to quantify the sulfate source from aqueous SO2 (S(IV)) oxidation by O3 in alkaline sea-salt aerosols. Oxidation by O3 imparts a large DO signature to the resulting sulfate (8.8%) relative to oxidation by H2O2 (0.9%) or by OH or O2 (0%). Ship data from two Indian Ocean ...

The Influence of Hematite on High Speed Continuous Casting of Steel Lubricating Powders: Viscosity and Crystallization

Mold powders used in the continuous casting of steel contain the harmful CaF2 as a main substance developing toxic gases such as SiF4 and HF at elevated temperatures. In this study, three samples of I1, I2 and I3, which contained gypsum free Portland cement clinker with different percentages of Fe2O3 (5.68, 6.83, 8.02 ...

Calcium oxalate crystallization kinetics studied by oxalate-induced turbidity in fresh human urine and artificial urine.

We have studied the kinetics of oxalate-induced turbidity in fresh human urine and artificial urine. Assays are performed in 96-well plates, which allows many oxalate concentrations to be studied, repeatedly, in a short time. The metastable limit is defined in terms of the lowest oxalate concentration that gives a rate of change of attenuance significantly greater than the control. Interpretati...

Coded Strobing Photography: Compressive Sensing of High-speed Periodic Events

We show that, via temporal modulation, one can observe a high-speed periodic event well beyond the abilities of a low-frame rate camera. By strobing the exposure with unique sequences within the integration time of each frame, we take coded projections of dynamic events. From a sequence of such frames, we reconstruct a high-speed video of the high frequency periodic process. Strobing is used in...

Effect of temperature, pH and salt concentration on β-lactoglobulin deposition kinetics studied by OWLS