Absorbed electron doses in mixed liquid-phase systems

1982 ◽  
Vol 53 (1) ◽  
pp. 496-497
Author(s):  
�. D. Grushkova ◽  
V. V. Krayushkin ◽  
Yu. D. Kozlov
Keyword(s):  
Liquid Phase ◽  
Phase Systems

Tie Lines in Two-Liquid-Phase Systems

1940 ◽  
Vol 12 (1) ◽  
pp. 35-37 ◽  
Author(s):  
A. V. Brancker ◽  
T. G. Hunter ◽  
A. W. Nash
Keyword(s):  
Liquid Phase ◽  
Tie Lines ◽  
Phase Systems

scholarly journals The Effect of Salts on the Liquid–Liquid Phase Equilibria of PEG600 + Salt Aqueous Two-Phase Systems

2013 ◽  
Vol 58 (12) ◽  
pp. 3528-3535 ◽  
Author(s):  
Sara C. Silvério ◽  
Oscar Rodríguez ◽  
José A. Teixeira ◽  
Eugénia A. Macedo
Keyword(s):  
Liquid Phase ◽  
Phase Equilibria ◽  
Two Phase ◽  
Aqueous Two Phase Systems ◽  
Phase Systems

Biotransformations in two-liquid-phase systems

1999 ◽  
Vol 25 (8-9) ◽  
pp. 729-735 ◽  
Author(s):  
Francesco Molinari ◽  
Raffaella Gandolfi ◽  
Fabrizio Aragozzini ◽  
Rosa Leon ◽  
Duarte M.F. Prazeres
Keyword(s):  
Liquid Phase ◽  
Phase Systems

Americium(III)/curium(III) separation by countercurrent chromatography using malonamide extractants

2005 ◽  
Vol 93 (1) ◽  
Author(s):  
B. F. Myasoedov ◽  
T. A. Maryutina ◽  
M. N. Litvina ◽  
D. A. Malikov ◽  
Yu. M. Kulyako ◽  
...  
Keyword(s):  
Liquid Phase ◽  
Stationary Phase ◽  
Flow Rate ◽  
Mobile Phase ◽  
Countercurrent Chromatography ◽  
Column Length ◽  
Isocratic Elution ◽  
Phase Systems ◽  
Phase Retention

AbstractThe separation of Am(III) and Cm(III) by countercurrent chromatography (CCC) was achieved using the liquid phase systems "diamide–hydrogenated tetrapropylene (TPH)–HNOThe following diamide extractants have been studied: (i) N,N´-dimethyl-N,N´-dibutyltetradecylmalonamide (DMDBTDMA), (ii) N,N´-dimethyl-N,N´-dioctylhexyl-ethoxymalonamide (DMDOHEMA) and (iii) N,N´-dimethyl-N,N´-dibutyldodecylethoxymalonamide (DMDBDDEMA). It is shown that these diamides can be used for the separation of Am(III) and Cm(III) by CCC. Increasing the column length leads to an increase of the stationary phase retention on the column while improving the Am/Cm separation. Increasing the speed of rotation of the centrifuge from 660 to 950 rpm also results in increasing the stationary phase retention but does not influence the resolution of the Am/Cm separation. Decreasing the flow rate of the mobile phase from 1.0 to 0.5 mL/min leads to a better resolution of Am and Cm separation. The best Am/Cm separation was achieved with systems based on DMDBDDEMA and DMDOHEMA in TPH using a two-layer coil column and an isocratic elution mode. The application of CCC makes it possible to separate the elements within 100 min: the Cm fraction contains 99.5% of Cm(III) and 0.6% of Am(III) inventories and the Am fraction contains 99.4% of Am(III) and 0.5% of Cm(III).

scholarly journals IMINATION OF CHITOSAN NANOFIBERS IN A HETEROGENEOUS SYSTEM. SYNTHESIS OPTIMIZATION AND IMPACT ON FIBER MORPHOLOGY

2021 ◽  
Vol 55 (7-8) ◽  
pp. 785-793
Author(s):  
ALEXANDRU ANISIEI ◽  
ANDRA-CRISTINA BOSTANARU ◽  
MIHAI MARES ◽  
LUMINITA MARIN
Keyword(s):  
Polyethylene Glycol ◽  
Liquid Phase ◽  
Polar Solvent ◽  
Solid Phase ◽  
Fiber Morphology ◽  
Glycol Chitosan ◽  
Fibrous Morphology ◽  
Phase Systems ◽  
The Impact ◽  
Heterogenous System

The paper aimed to prepare imino-chitosan fibers by the imination reaction in a heterogenous system, targeting the improvement of anti-pathogenic activity. To this end, porous neat chitosan fibers were prepared by electrospinning of the polyethylene glycol/chitosan blend, followed by polyethylene glycol removal. Imination of the neat chitosan fibers was carried out in three liquid phase systems using solvents of different polarity and, consequently, different ability to swell the solid phase chitosan fibers. The successful imination was qualitatively and quantitatively assessed by FTIR and 1H-NMR spectroscopy, and the impact of the liquid phase on the fibers’ morphology was evaluated by SEM, POM and AFM microscopy. Further, the antimicrobial activity of the imino-chitosan fibers was investigated on relevant bacterial and fungal strains. It was concluded that the prior swelling in water of the fibers improved the imination degree, while the use of a less polar solvent, such as toluene, favored the preservation of the fibrous morphology. The imination with an antimicrobial aldehyde endowed the chitosan fibers with the ability to create a physical barrier against pathogens.

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