Study of the effect of plasma chemical oxidation of ethylene impurity on the efficiency of banana storage

The effect of the products of plasma chemical reactions (including ozone) on the storage of fruits and berries was studied. Being the product of greatest commercial interest, bananas were selected as the test object. It was shown that the growth of pathogenic microflora is effectively inhibited by the products of plasma chemical reactions. It was shown that the use of a plasma chemical system, due to which ethylene concentration is reduced and ozone concentration is simultaneously maintained at the level of several ppm, could reduce the amount of spoiled products by several times.Досліджено вплив продуктів плазмохімічних реакцій (у тому числі і озону) на зберігання плодово-ягідної продукції. Як тест-об’єкт вибрано банани, які мають найбільший комерційний інтерес. Показано, що продуктами плазмохімічних реакцій ефективно пригнічується зростання патогенної мікрофлори. Показано, що використання плазмохімічної системи, яка знижує концентрацію етилену і одночасно підтримує концентрацію озону на рівні декількох проміле, може зменшити кількість зіпсованої продукції у кілька разів

Magnetic fileds of coalescing neutron stars and the luminosity function of short gamma-ray burst

Coalescing neutron star binaries are believed to be the most reliable sources for ground-based detectors of gravitational waves and likely progenitors of short gamma-ray bursts. In the process of coalescence, magnetic fields of neutron stars can induce interesting observational manifestations and affect the form of gravitational wave signal. In this papaer we use the population synthesis method to model the expected distribution of neutron star magnetic fields during the coalescence under different assumptions on the initial parameters of neutron stars and their magnetic field evolution. We discuss possible elecotrmagnetic phenomena preceding the coalescence of magnetized neutron star binaries and the effect of magnetic field on the gravitational wave signal. We find that a log-normal (Gaussian in logarithms) distribution of the initial magnetic fields of neutron stars, which agrees with observed properties of radio pulsars, produces the distribution of the magnetic field energy during the coalescence that adequately describes the observed luminosity function of short gamma-ray bursts under different assumptions on the field evolution and initial parameters of neutron stars. This agreement lends further support to the model of coalescing neutron star binaries as progenitors of gamma-ray bursts.Comment: v.2, LATEX, 25 pages, inc. 7 ps figures, Astron. Lett., in press. Typos corrected, reference adde

CO-immobilization of L-lysine α-oxidase and peroxidase on porous membrane carriers

The qoal of the present study was the development of the optimal method of co-immobilization of two enzymes: L-lysine α-oxidase from Trichoderma sp. and horseradish peroxidase. Commercial nitrocellulose, nylon and N+ nylon membranes were used as carriers. The immobilization was carridont either by absorbtion or by covalent binding with aldehyde groups. The aldehyde groups were attached to the surface of the carriers by UV-irradiation of membranes in the presence of pazidotetrafluorobenzaldehyde. The optimal concentrations of reagents, enzymes and reaction conditions were found. The membranes with the co-immobilised L-lysine α-o.xidase and peroxidase were shown to be useful for the determination of L-lysine concentrations

Co-immobilization of L-lysine alpha-oxidase and peroxidase on porous membrane carriers.

The goal of the present study was the development of the optimal method of co-immobilization of two enzymes: L-lysine alpha-oxidase from Trichoderma sp. and horseradish peroxidase. Commercial nitrocellulose, nylon and N+ nylon membranes were used as carriers. The immobilization was carridont either by absorbtion or by covalent binding with aldehyde groups. The aldehyde groups were attached to the surface of the carriers by UV-irradiation of membranes in the presence of p-azidotetrafluorobenzaldehyde. The optimal concentrations of reagents, enzymes and reaction conditions were found. The membranes with the co-immobilised L-lysine alpha-oxidase and peroxidase were shown to be useful for the determination of L-lysine concentrations

Co-immobilization of L-lysine alpha-oxidase and peroxidase on porous membrane carriers.

The goal of the present study was the development of the optimal method of co-immobilization of two enzymes: L-lysine alpha-oxidase from Trichoderma sp. and horseradish peroxidase. Commercial nitrocellulose, nylon and N+ nylon membranes were used as carriers. The immobilization was carridont either by absorbtion or by covalent binding with aldehyde groups. The aldehyde groups were attached to the surface of the carriers by UV-irradiation of membranes in the presence of p-azidotetrafluorobenzaldehyde. The optimal concentrations of reagents, enzymes and reaction conditions were found. The membranes with the co-immobilised L-lysine alpha-oxidase and peroxidase were shown to be useful for the determination of L-lysine concentrations

CO-immobilization of L-lysine α-oxidase and peroxidase on porous membrane carriers

The qoal of the present study was the development of the optimal method of co-immobilization of two enzymes: L-lysine α-oxidase from Trichoderma sp. and horseradish peroxidase. Commercial nitrocellulose, nylon and N+ nylon membranes were used as carriers. The immobilization was carridont either by absorbtion or by covalent binding with aldehyde groups. The aldehyde groups were attached to the surface of the carriers by UV-irradiation of membranes in the presence of pazidotetrafluorobenzaldehyde. The optimal concentrations of reagents, enzymes and reaction conditions were found. The membranes with the co-immobilised L-lysine α-o.xidase and peroxidase were shown to be useful for the determination of L-lysine concentrations