Results 171 to 180 of about 16,833 (225)

Countercurrent distribution of poliovirus type 1

Virology, 1963
Abstract Differences in the countercurrent distribution pattern in an aqueous polymer phase system are demonstrated for various strains of poliovirus type 1. The attenuated strains L Sc 2 ab and Baylor Att.-1 have partition coefficients of 0.2–0.4 whereas the CHAT strains and a virulent strain have partition coefficients of ≈4.
S, BENGTSSON, L, PHILIPSON
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Circular countercurrent-distribution behavioral genetic maze

Journal of Heredity, 1977
An inexpensive, easily constructed apparatus for mass screening of taxes of small animals with a rapid and accurate assignment of individual behavior scores has been described that should be of utility in hastening a behavioral geneticist's chores and allow him to handle more populations with fewer mazes.
M, Kordek, J R, Jungck, F J, McKosky, M, Norton, J, Roche   +4 more
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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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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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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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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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[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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Countercurrent Distribution of Colchicine and some Derivatives *

Journal of the American Pharmaceutical Association (Scientific ed.), 1953
Abstract A method for the determination of the composition of a binary mixture based on partition coefficients is reported. Where a significant difference exists in the partition coefficients of the two components for a given solvent system, an equation is presented which permits composition analyses where other methods may not be applicable.
S D, BAILEY, R M, HOROWITZ, H L, DINSMORE   +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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