Turbulent energy parameters of single-phase pulsed flow in an extraction column with internals of immobile discs and rings (doughnuts) are studied. Simulation results are obtained by resolution of Reynolds equations coupled with k–ε model of turbulence. As far as pulsed flow is concerned, the evolution of space distribution of turbulent kinetic energy k and its dissipation rate ε during the pul...

An original one dimensional population balance model (PBM)-based of liquid–liquid extraction columns is reported. Compared to existing simulators, ColHySE implements a more realistic description the flow patterns in contactor, and predicts its effect on local droplet–droplet interactions (i.e. breakage coalescence rates). Proper turbulent properties, extracted from single-phase CFD simulations,...

We have previously demonstrated a pulsed direct detection IPDA lidar to measure range and the column concentration of atmospheric CO2. The lidar measures the atmospheric backscatter profiles and samples the shape of the 1,572.33 nm CO2 absorption line. We participated in the ASCENDS science flights on the NASA DC-8 aircraft during August 2011 and report here lidar measurements made on four flig...

Accurate global measurments of tropospheric CO2 abundance to the "parts per million" (ppm) level is required to better quantify processes that regulate CO2 exchange between atmosphere, land and ocean. To this end NASA has planned the ASCENDS mission, Active Sensing of CO2 Emissions over Nights, Days and Seasons. We report on an airborne laser-based remote sensing instrument we have developed at...

Abstract. The retrieval algorithm for CO2 column mixing ratio from measurements of a pulsed multi-wavelength integrated path differential absorption (IPDA) lidar is described. samples the shape 1572.33 nm line at multiple wavelengths. uses least-squares fit between computed layered atmosphere model and that sampled by lidar. In addition to column-average dry-air mole fraction (XCO2), several ot...

We performed timing and spectral analysis for PSR B1929+10, one of the oldest (about 10 years) of the ordinary pulsars detected in X-rays, using archival ROSAT, ASCA and RXTE data. Pulsed emission was detected at a more than five sigma level for combined ROSAT PSPC and unpublished HRI data. Our pulse profile is in agreement with that obtained by Yancopoulos et al. (1994; ROSAT PSPC) but now wit...

Myo-inositol is a 6-carbon cyclic polyalcohol also known as meso-inositol, meat sugar, inosite, and i-inositol. It occurs in nature in both free (myo-inositol) and bound (inositol phosphates and phosphatidylinositol) forms. For the determination of free myo-inositol, samples are mixed with dilute hydrochloric acid to extract myo-inositol and precipitate proteins, diluted with water, and filtere...