In this paper we attempt, for the first time, to simulate the magnetic activity of an accretion disc using a probabilistic cellular automaton model. Our model is based on three free parameters, the probabilities of spontaneous and stimulated generation of magnetic flux above the surface of the disc (S0, and, respectively, P ), and the probability of diffusive disappearance of flux below the sur...

After obtaining informed consent, biopsy specimens of bone were obtained from the posterior iliac crest of patients with myeloma or other neoplastic diseases with a Wester man Jenson needle. These biopsy specimens ranged from 0.3 to 0.6 cm long. The bone explants were cultured in 2 thin-film culture systems (7-9); (a) an automated unit capa ble of being programmed for proportional media exchang...

The purpose of this study is to observe and describe a culture that surrounds the community as whole related Sewu Temple in certain period based on fieldwork,then look for mathematical aspects history, manufacturing processes, concepts. results are presented qualitative form with an ethnographic approach describes history Temple, sources obtained interviews, observations documentation, using in...

the brass tubes with foam cores of alsi7sic3, alsi7sic3fe1 and alsi7sic3fe3 were produced as the crush-boxes with circle and square cross-section. then axial compressive behavior and energy absorption capability of the foam-filled tubes were investigated during the quasi-static progressive plastic buckling. the uniaxial compressive stress–strain curves of the foam-filled brass tubes exhibited t...

In this paper the fabrication and electrical characterization of a silicon microreactor for high-temperature catalytic gas phase reactions, like Rh-catalyzed catalytic partial oxidation of methane into synthesis gas, is presented. The microreactor, realized with micromachining technologies, contains silicon nitride tubes that are suspended in a flow channel. These tubes contain metal thin films...

Abstract—Solar water heating is a thermodynamic process of heating water using sunlight with the help of solar water heater. Thus, solar water heater is a device used to harness solar energy. In this paper, a modified solar water heating system (MSWHS) has been proposed over flat plate collector (FPC) and Evacuated tube collector (ETC). The modifications include selection of materials other tha...

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In the present study, ion adsorption on the outer and inner surfaces of single-walled carbon nanotubes (SWCNTs) in different aqueous and organic electrolytes was analysed. It was found that the fundamental properties of tube size and electronic structure, particularly the transition between van Hove singularities (the band gap), reflected by the shape of the cyclic voltammogram and increase in ...

Helicon wave sources are known for the dense, remote plasmas they create for etching. Recently they have been found to also deposit high-quality oxide layers. By using an array of multiple sources, we hope to create a uniform plasma of arbitrary size for processing flat-panel displays. The dc magnetic field B that helicons require can hopefully be supplied by permanent magnets, thus avoiding th...