36,524 research outputs found
Interpreting the effects of operating variables on the induction period of CaCl2–Na2CO3 system by a cluster coagulation model
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Mt. Tai O3 datasets
No full textArchived here are the observation data (hourly resolution) in 2018 at Mt. Tai as well as the LPTM output discussed in the paper: Zhang, Y., Xue, L., Li, H., Chen, T., Mu, J., Dong, C., Sun, L., Liu, H., Zhao, Y., Wu, D., Wang, X., and Wang W.: Source Apportionment of Regional Ozone Pollution Observed at Mount Tai, North China: Application of Lagrangian Photochemical Trajectory Model and Implications for Control Policy, Journal of Geophysical Research., in revirw, 202
Occurrence of plasmids and tetracycline resistance among Campylobacter jejuni and Campylobacter coli isolated from whole market chickens and clinical samples
No full textChallenges and improvements in applying a particle image velocimetry (PIV) approach to granular flows
No full textThe particle image velocimetry (PIV) is a well-established non-invasive optical technique for measuring the velocity field in fluids. Recently, the PIV approach has been extended to granular flows, where the medium under investigation is composed of a discrete number of grains that are typically non-transparent and of super-millimetric size. Granular PIV (g-PIV) still represents a non-standard application, as some accuracy concerns arise. In particular, since granular flows can be highly sheared, the choice of appropriate interrogation windows for the PIV analysis is not trivial. As well, owing to the spatially-averaged nature of the PIV approach, the estimation of second-order statistics remains a very challenging task. Here, we report a laboratory investigation on dry granular flows composed of glass spheres in a rotating drum. The velocity measurements at the sidewall are obtained by using a window deformation multi-pass PIV approach, where the open-source code PIVlab has been specifically used. Different combinations of the number of PIV passes and of interrogation windows are investigated. A slightly modified version of PIVlab allowed us to carry out g-PIV calculations with an arbitrary number of passes (i.e. greater than 4). Comparisons among different analyses helped us to identify reliable settings for g-PIV applications
Control of Crystal Habit and Particle Morphology of Calcium Sulfite Hemihydrate Crystals
No full textMorphology and growth rate of calcium carbonate crystals in a gas-liquid-solid reactive crystallizer
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