General Relativistic MHD Jets

Magnetic fields connecting the immediate environs of rotating black holes to large distances appear to be the most promising mechanism for launching relativistic jets, an idea first developed by Blandford and Znajek in the mid-1970s. To enable an understanding of this process, we provide a brief introduction to dynamics and electromagnetism in the spacetime near black holes. We then present a brief summary of the classical Blandford-Znajek mechanism and its conceptual foundations. Recently, it has become possible to study these effects in much greater detail using numerical simulation. After discussing which aspects of the problem can be handled well by numerical means and which aspects remain beyond the grasp of such methods, we summarize their results so far. Simulations have confirmed that processes akin to the classical Blandford-Znajek mechanism can launch powerful electromagnetically-dominated jets, and have shown how the jet luminosity can be related to black hole spin and concurrent accretion rate. However, they have also shown that the luminosity and variability of jets can depend strongly on magnetic field geometry. We close with a discussion of several important open questions.Comment: 21 pages, 2 figures, To appear in Belloni, T. (ed.): The Jet Paradigm - From Microquasars to Quasars, Lect. Notes Phys. 794 (2009

Relativistic Laser-Matter Interaction and Relativistic Laboratory Astrophysics

The paper is devoted to the prospects of using the laser radiation interaction with plasmas in the laboratory relativistic astrophysics context. We discuss the dimensionless parameters characterizing the processes in the laser and astrophysical plasmas and emphasize a similarity between the laser and astrophysical plasmas in the ultrarelativistic energy limit. In particular, we address basic mechanisms of the charged particle acceleration, the collisionless shock wave and magnetic reconnection and vortex dynamics properties relevant to the problem of ultrarelativistic particle acceleration.Comment: 58 pages, 19 figure

Antitumor enzyme L-lyzine-α-oxidase from Trichoderma harzianum Rifai F-180 and investigation of its action on L-lysine oxidation by capillar electrophoresis

Trichoderma harzianum Rifai F-180, an organism producing the antitumor enzyme L-lysine-a-oxidase was cultivated and the enzyme was isolated and purified under the manufacturing conditions. The effect of L-lysine-α-oxidase on oxidation of L-lysine was investigated for the first time by capillary electrophoresis and the procedure conditions were developed. The reaction of L-lysine oxidative deamination is described and location of the reaction components picks on the elecrophoregrams was identified. The average rate of the catalytic reaction of L-lysine oxidation equal to 0.46 RU/min (7.7×103 RU/sec) was determined. The use of the antitumor enzyme L-lysine-a-oxidase is recommended as a drug for the treatment of superficial tumors and tissue relative oxygen excess

Structure and Thermoelectric Properties of CoSi-Based Film Composites

The properties of Co–Si thin films grown by the thermal sintering of Co and Si layers are studied. Co and Si layers are produced by chemical vapor deposition. To form cobalt silicide, the obtained two-layer structure is annealed at a temperature of 760 K for 12 h. The thermoelectric properties of the film structure are studied in the temperature range of 300–800 K. The temperature dependences of the thermoelectric power and resistivity, as well as structural data, indicate the formation of a multilayer structure containing layers with excess silicon and cobalt

Antitumor enzyme L-lyzine-α-oxidase from Trichoderma harzianum Rifai F-180 and investigation of its action on L-lysine oxidation by capillar electrophoresis

Trichoderma harzianum Rifai F-180, an organism producing the antitumor enzyme L-lysine-a-oxidase was cultivated and the enzyme was isolated and purified under the manufacturing conditions. The effect of L-lysine-α-oxidase on oxidation of L-lysine was investigated for the first time by capillary electrophoresis and the procedure conditions were developed. The reaction of L-lysine oxidative deamination is described and location of the reaction components picks on the elecrophoregrams was identified. The average rate of the catalytic reaction of L-lysine oxidation equal to 0.46 RU/min (7.7×103 RU/sec) was determined. The use of the antitumor enzyme L-lysine-a-oxidase is recommended as a drug for the treatment of superficial tumors and tissue relative oxygen excess