Now showing items 41-50 of 85
Mechanism of cholesterol gallstone dissolution. III. Electrophoretic studies showing the correlation between the bile micellarcharge and the effect of alkyl amines as cholesterol gallstone dissolution rate accelerators
(Elsevier, 1980-03)
We have shown that the cholesterol monohydrate dissolution rate acceleration in chenodeoxycholic acid solutions due to the addition of hexylamine and octylamine may be directly related to their ability to bind to the ...
Concurrent isolation of granulocytes and lymphocytes with unaltered permeability, energy state, and metabolic capacity in vitro
(Elsevier, 1980-04)
A method has been developed based on sedimentation, discontinuous density gradient centrifugation, and differential lysis for the concurrent isolation from the same sample of blood of granulocytes and lymphocytes with ...
Module for rapid normal and inverse normal pulse polarography: application to study of adsorption
(Elsevier, 1980-01-25)
Construction and utilization of a module for interfacing with a rapid response potentiostat are described, which permits use of normal pulse polarography (NPP) and inverse normal pulse polarography (INPP). In trace analysis ...
Field-dispersion profiles of the proton spin-lattice relaxation rate in chloroplast suspensions. Effect of manganese extraction by EDTA, Tris, and hydroxylamine
(Elsevier, 1980-08-05)
Proton spin-lattice relaxation rates (R1) have been measured in a variety of dark-adapted chloroplast suspensions over a range of field strengths between 1 and 15 kG (4-5 MHz). When the effects of EDTA or Tris washing on ...
Thermophysics of the lanthanide trihydroxides II. Heat capacities from 10 to 350 K of Nd(OH)3 and Tb(OH)3. Lattice and Schottky contributions
(Elsevier, 1980-04)
Heat capacities have been measured from near 7 to 350 K for Nd(OH)3 and Tb(OH)3 and the derived thermophysical properties evaluated using previously reported heat capacities at lower temperatures. At 298.15 K the values ...
Bovine prothrombin does not contain [alpha]--galactopyranosyl groups
(Elsevier, 1980-02)
Using purified lectins (Bandeiraea simplicifolia I-B4 isolectin and the castor bean agglutinin) and glycosidases ([alpha]- and [beta]-galactosidases) we have shown that the terminal, non-reducing galactopyranosyl groups ...
Inhibition by lead of human erythrocyte (Na+ + K+)-adenosine triphosphatase associated with binding of 210Pb to membrane fragments
(Elsevier, 1980-07-16)
Fragmented human erythrocyte membranes were exposed to PbCl2 for 10-40 min at 23[deg]C prior to (Na+ + K+)-ATPase assay. Inhibition increased with exposure time. Enzyme activity in 5 [mu]g membrane protein was inhibited ...
An assay of deoxyadenosine and adenosine in human plasma by HPLC
(Elsevier, 1980-10)
We have developed a method for the simultaneous measurement of deoxyadenosine and adenosine in human plasma. A barium hydroxidezinc sulfate extraction procedure circumvented acid precipitation and preserved the deoxyadenosine. ...
Vibrational analysis of peptides, polypeptides, and proteins. V. Normal vibrations of Β-turns
(Wiley Subscription Services, Inc., A Wiley Company, 1980-01)
The normal modes have been calculated for Β-turns of types I, II, III, I′, II′, and III′. The complete set of frequencies is given for the first three structures; only the amide I, II, and III modes are given for the latter ...
On the movement of multiple reaction zones in porous media
(American Institute of Chemical EngineersWiley Periodiocals, Inc., 1980-05)
A distributed parameter model has been developed to describe flow and dissolution of different minerals in porous media. Asymptotic solutions are obtained to give the separation of the different mineral reaction fronts and ...