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The decisive role of the water structure in changes of conformation of nucleic acids

100%

Barciszewski J., Jurczak J., Porowski S., Specht T., Erdmann V. A.

Acta Biochimica Polonica

1999

tom 46

nr 1

This review summarizes data on the structure and properties of water under normal conditions, at high salt concentration and under high pressure. We correlate the observed conformational transitions in nucleic acids with changes in water structure and activity, and suggest a mechanism of conformational transitions of nucleic acid involving these changes. We conclude that the Z-DNA form is induced only at low water activity caused by high salt concentrations and/or high pressure.

Kinetics of particle formation in the graft polymerization of acrylic monomers onto polysaccharides

67%

Kislenko V. N., Litovchenko N. I.

Żywność Nauka Technologia Jakość. Suplement

2002

tom 09

nr 4

The kinetics of polymer particle formation and distribution of acrylic monomers between a solution and polymer particles at the graft polymerization of acrylic monomers onto polysaccharides have been investigated. The polyacrylic particle number increased at the first stage of polymerization of soluble monomers. At the second stage of polymerization, the number of particles was always constant. The concentration of adsorbed monomer decreased during the polymerization process. The monomer concentration in dispersed phase was higher than in solution. The mathematical model taking into account the rate of monomer polymerization, aggregation of oligomer radicals and their conformation changes, adsorption of monomer in the polymer particles has been proposed. Based on the experimental results, some constants of the process were calculated.

Ograniczanie wyników

1 Acta Biochimica Polonica

1 Żywność Nauka Technologia Jakość. Suplement

1 Barciszewski J.

1 Erdmann V. A.

1 Jurczak J.

1 Kislenko V. N.

1 Litovchenko N. I.

1 Porowski S.

1 Specht T.

1 2002

1 1999

Wyniki wyszukiwania

The decisive role of the water structure in changes of conformation of nucleic acids

Kinetics of particle formation in the graft polymerization of acrylic monomers onto polysaccharides