Now showing items 51-60 of 85
Enzymatic fluorometric assay for myo-inositol trisphosphate
(Elsevier, 1987-05-01)
The determination of myo-inositol trisphosphate by an enzymatic fluorometric assay is presented. The method involves the acid extraction of water-soluble inositol polyphosphates followed by separation by anion-exchange ...
Soft X-ray emission from a CO 2 laser-heated Z-pinch plasma
(Kluwer Academic Publishers-Plenum Publishers; Plenum Publishing Corporation ; Springer Science+Business Media, 1987-09)
We report results of soft X-ray measurements in which a high-power (10 10 –10 11 W/cm 2 ) CO 2 laser was used to heat a near critical density (<10 19 cm −3 ) helium Z-pinch plasma. Frequency-integrated X-ray data show that ...
A technique for the determination of protein concentration by neutron activation analysis of silver binding
(Kluwer Academic Publishers; Akadémiai Kiadó ; Springer Science+Business Media, 1987-05)
A method for the quantitative determination of small amounts of protein samples was developed employing neutron activation analysis. Current methods of protein concentration determination are severely limited as a result ...
Population balance modeling of the dissolution of polydisperse solids: Rate limiting regimes
(American Institute of Chemical EngineersWiley Periodiocals, Inc., 1987-01)
Significant errors can result in modeling dissolution processes if the polydispersity of the solid particles is ignored and the sample is treated as a collection of monodisperse spheres having the average size of the ...
Centrifugal distortions in molecules: An ab initio approach with application to ozone
(John Wiley & Sons, Inc., 1987-06)
Our procedure for employing analytical gradients of ab initio potential energy hypersurfaces in the description of centrifugally distorted molecules is applied for the first time to an asymmetric top, namely ozone. Both ...
Synthesis of linear poly(ethylenimine) containing nucleic acid pendants as polynucleotide analogs
(John Wiley & Sons, Inc., 1987-07)
Polynucleotide analogs with a linear poly(ethylenimine) (PEI) backbone and adenine, cytosine, and hypoxanthine pendants were synthesized. Linear PEI was synthesized by the cationic ring-opening polymerization of 2-H-2-oxazoline, ...
Potentiometric titration behavior of poly(ethylene glycol methyl ether)-b-poly(ethylenimine)
(John Wiley & Sons, Inc., 1987-08)
Poly(ethylene glycol methyl ether)-b-poly(ethylenimine hydrochloride) was characterized using potentiometric and viscosimetric titration methods. The average chemical compositions of the polyamine hydrochloride salts ...
Polymerization and conformational studies of poly( trans -3-ethyl- D and L -proline)
(John Wiley & Sons, Inc., 1987-11)
Poly( L - trans -3-ethylproline), L -PT3EP, and poly( D - trans -3-ethylproline), D -PT3EP, were prepared by ring opening polymerization of the corresponding N -carboxyanhydrides (NCA) using triethylamine as an initiator. ...
Synthesis of polynucleotide analogs by grafting optically active nucleic acid base derivatives onto polyethylenimine Preliminary results are reported in J. Polym. Sci. Polym. Chem. Ed. , 24 , 167 (1986).
(John Wiley & Sons, Inc., 1987-01)
Polynucleotide analogs with a polyethylenimine backbone and optically active thymine- and adenine-containing pendants and their model compounds were synthesized. The pendants were prepared by the addition reaction of the ...
Synthesis and esterolytic reactions of linear and cross-linked asymmetric imidazole-containing polymers
(John Wiley & Sons, Inc., 1987-11)
Asymmetric linear and cross-linked imidazole-containing polymers were prepared from 1-[2(S)-methylbutyl]-4-vinylimidazole and 1-[2(S)-methylbutyl]-5-vinylimidazole. The esterolytic reactions of these linear and cross-linked ...