Results 131 to 140 of about 3,223 (188)

Countercurrent distribution of ribonucleic acids. IV

Biochimica et Biophysica Acta (BBA) - Specialized Section on Nucleic Acids and Related Subjects, 1962
Abstract RNA which has been prepared from rat liver by phenol-water or phenol-naphthalene 1,5-disulphonate methods can be fractionated by countercurrent distribution in two-phase systems of 2-alkoxyethanols and 1.25 M phosphate containing N , N -dibutylaminoethanol.
K S, KIRBY, J R, HASTINGS, M A, O'SULLIVAN   +2 more
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Phase equilibria and countercurrent distribution

Journal of the American Oil Chemists' Society, 1968
AbstractTernary diagrams for methyl oleate/hexane/acetonitrile and methyl palmitate/hexane/acetonitrile systems were constructed from equilibria data obtained at 20.0 and 30.4C. The diagrams varied significantly with temperature; both systems showed expanded regions of immiscibility at the lower temperature. Both the partition coefficient of the methyl
R. A. Barford, R. J. Bertsch, H. L. Rothbart   +2 more
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Modern Countercurrent Distribution

Separation and Purification Methods, 1975
Abstract Interest in liquid-liquid extraction continues to grow as evidenced by such divergent applications as industrial waste water treatment1,2 cleanup for pesticide residue analysis3, and resolution of optical isomers.4 This activity results from increased understanding of the chemistry of solvent extraction which is leading to the design of ...
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Countercurrent distribution with simple equipment

Journal of Chemical Education, 1981
The experiment presented here is suitable as a class project, with each student analyzing the contents of one tube.
I. R. C. Bick, A. J. Blackman, E. J. Browne   +2 more
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Fractionation and countercurrent distribution of ribonucleic acid

Biochimica et Biophysica Acta, 1960
Abstract 1. 1. RNA has been prepared from rat and chicken liver by phenol-water and phenol-naphthalene-1,5-disulphonate (NDS) methids. The RNA prepared by the phenol-NDS method appears to be less degraded than RNA isolated by phenol-water. 2. 2.
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[16] Countercurrent distribution

1967
Publisher Summary Countercurrent distribution is a method for the separation of protein subunits that offers the possibility of using conditions that cannot be achieved with separation methods such as electrophoresis or ion-exchange chromatography.
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Nonideal Phenomena in Countercurrent Distribution

Separation Science, 1969
Abstract An equation is presented that predicts the number of inputs required to produce a step-function (frontal) output in countercurrent distribution (CCD). When a portion of both phases is transported during experiments, the published equations for CCD are inappropriate.
H. L. Rothbart, R. A. Barford, V. G. Martin, R. J. Bertsch, C. R. Eddy   +4 more
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Laboratory countercurrent distribution apparatus

Journal of Chemical Education, 1959
Describes the design, construction, and operation of a laboratory countercurrent distribution apparatus.
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Partition by Countercurrent Distribution (CCD)

2003
A crucial step in many biochemical studies is the separation and purification of the individual structures of interest. For cells, cell organelles, and membrane fragments, the use of aqueous two-phase partition has become an important tool. The basis for separation in these phase systems is the surface properties of the material, and the method ...
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Fractionation of Lipids by Countercurrent distribution

Journal of the American Oil Chemists' Society, 1963
AbstractThe application of countercurrent distribution to the fractionation of lipids both for analytical and preparative purposes, is presented. The method has been applied to the separation of a wide variety of lipids including: fatty acids, methylesters of fatty acids, glycerides, phospholipids, derivatives of phospholipids, complex lipid mixtures ...
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