Methane biodegradation in a two-phase partition internal loop airlift reactor with gas recirculation

A technique which identifies cells differing in surface character, aqueous two-phase partition using thin-layer countercurrent distribution (TLCCD), has been used to study differentiation and pattern formation in the developing chick limb bud. The TLCCD profiles of cell populations, derived from various regions of morphologically undifferentiated mesenchyme from three different stages of limb development, have been compared. At no stage, or location, has the population been found to be homogeneous. Cells from progress zones and more proximal regions could all be resolved into several populations. The populations from progress zones at three different developmental stages were qualitatively similar but differed in the proportions of cells in each. The most striking differences in cell populations were those obtained from the most proximal region of the limb, closest to the flank, which represents the developmentally most advanced region.

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Isolation of Plasma Membrane Vesicles from Fat Cells of Epididymal Fat Pads of the Rat by Aqueous Two-Phase Partition

Separations Using Aqueous Phase Systems ◽

10.1007/978-1-4684-5667-7_20 ◽

1989 ◽

pp. 113-115 ◽

Cited By ~ 1

Author(s):

Dorothy M. Morré ◽

D. James Morré ◽

Timothy Snyder ◽

William Li ◽

Amy Erb ◽

...

Keyword(s):

Plasma Membrane ◽

Membrane Vesicles ◽

Fat Cells ◽

Plasma Membrane Vesicles ◽

Two Phase ◽

Phase Partition ◽

Epididymal Fat ◽

Two Phase Partition ◽

Fat Pads

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Influence of biomass on hydrodynamics of an internal loop airlift reactor

Chemical Papers ◽

10.2478/s11696-006-0080-2 ◽

2006 ◽

Vol 60 (6) ◽

Cited By ~ 1

Author(s):

M. Juraščík ◽

M. Hucík ◽

I. Sikula ◽

J. Annus ◽

J. Markoš

Keyword(s):

Aspergillus Niger ◽

Gluconic Acid ◽

Solid Phase ◽

Biomass Concentration ◽

Airlift Reactor ◽

Phase System ◽

Two Phase ◽

Experimental Conditions ◽

Internal Loop ◽

Three Phase

AbstractThe effect of the biomass presence on the overall circulation velocity, the linear velocities both in the riser and the downcomer and the overall gas hold-up was studied in a three-phase internal loop airlift reactor (ILALR). The measured data were compared with those obtained using a two-phase system (air—water). All experiments were carried out in a 40 dm3 ILALR at six different biomass concentrations (ranging from 0 g dm−3 to 7.5 g dm−3), at a temperature of 30°C, under atmospheric pressure. Air and water were used as the gas and liquid model media, respectively. Pellets of Aspergillus niger produced during the fermentation of glucose to gluconic acid in the ILALR were considered solid phase. In addition, liquid velocities were measured during the fermentation of glucose to gluconic acid using Aspergillus niger. All measurements were performed in a bubble circulation regime. At given experimental conditions the effect of the biomass on the circulation velocities in the ILALR was negligible. However, increasing of the biomass concentration led to lower values of the total gas hold-up.

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