Biocompatibility evaluation of nickel
... can be accurately predicted and eventually lead to a shape change on a macroscopic scale. The crystal structure of martensite is relatively less symmetric compared to that of the parent phase. If a single crystal of the parent phase is cooled below Mf, then martensite variants with a total of 24 cry ...
... can be accurately predicted and eventually lead to a shape change on a macroscopic scale. The crystal structure of martensite is relatively less symmetric compared to that of the parent phase. If a single crystal of the parent phase is cooled below Mf, then martensite variants with a total of 24 cry ...
Effects of plasma non-homogeneity on the physical properties of
... coating production where the final coating properties like micro-structure, stoichiometry, hardness, wear resistance and adhesion are strongly dependent on plasma potential, electron temperature and density. Therefore it is of primary importance to study the plasma homogeneity and its effects on the ...
... coating production where the final coating properties like micro-structure, stoichiometry, hardness, wear resistance and adhesion are strongly dependent on plasma potential, electron temperature and density. Therefore it is of primary importance to study the plasma homogeneity and its effects on the ...
propagation of electromagnetic waves inside a
... pole 11 spherical wave functi ons may be obtained by differentiations of (1.11) and (1.13). In the above paragraphs, starting from plane waves, we succeeded in building up divergent symmetrical spherical waves which, from Equation (1.13) on neglecting the unimportant multiply_..'-;{ R ing factor, ca ...
... pole 11 spherical wave functi ons may be obtained by differentiations of (1.11) and (1.13). In the above paragraphs, starting from plane waves, we succeeded in building up divergent symmetrical spherical waves which, from Equation (1.13) on neglecting the unimportant multiply_..'-;{ R ing factor, ca ...
Modelling and Simulation of a Simple Homopolar Motor of Faraday`s
... Abstract: During the application of simulation tools of computational electromagnetics it is sometimes difficult to decide whether the problems can be solved by the computation of electromagnetic fields or circuit simulation tools have to be applied additionally. The paper describes a typical situat ...
... Abstract: During the application of simulation tools of computational electromagnetics it is sometimes difficult to decide whether the problems can be solved by the computation of electromagnetic fields or circuit simulation tools have to be applied additionally. The paper describes a typical situat ...
Word
... A battery [or cell] is a source of energy in electric circuits – a device for providing an electric current. This is done through the potential energy stored in the chemical bonds of the materials that make up the battery. Electrochemical cells are the simplest type of cell capable of producing an e ...
... A battery [or cell] is a source of energy in electric circuits – a device for providing an electric current. This is done through the potential energy stored in the chemical bonds of the materials that make up the battery. Electrochemical cells are the simplest type of cell capable of producing an e ...
The nature of Petschek-type reconnection T. G. Forbes
... the quasi-steady limit of an inherently time-dependent process. The simplest illustration of this process is the disruption of an infinitely long current sheet caused by enhancing the electrical resistivity in a localized region of the sheet. Disruption of the sheet in this manner leads naturally to ...
... the quasi-steady limit of an inherently time-dependent process. The simplest illustration of this process is the disruption of an infinitely long current sheet caused by enhancing the electrical resistivity in a localized region of the sheet. Disruption of the sheet in this manner leads naturally to ...
Superconductivity
Superconductivity is a phenomenon of exactly zero electrical resistance and expulsion of magnetic fields occurring in certain materials when cooled below a characteristic critical temperature. It was discovered by Dutch physicist Heike Kamerlingh Onnes on April 8, 1911 in Leiden. Like ferromagnetism and atomic spectral lines, superconductivity is a quantum mechanical phenomenon. It is characterized by the Meissner effect, the complete ejection of magnetic field lines from the interior of the superconductor as it transitions into the superconducting state. The occurrence of the Meissner effect indicates that superconductivity cannot be understood simply as the idealization of perfect conductivity in classical physics.The electrical resistivity of a metallic conductor decreases gradually as temperature is lowered. In ordinary conductors, such as copper or silver, this decrease is limited by impurities and other defects. Even near absolute zero, a real sample of a normal conductor shows some resistance. In a superconductor, the resistance drops abruptly to zero when the material is cooled below its critical temperature. An electric current flowing through a loop of superconducting wire can persist indefinitely with no power source.In 1986, it was discovered that some cuprate-perovskite ceramic materials have a critical temperature above 90 K (−183 °C). Such a high transition temperature is theoretically impossible for a conventional superconductor, leading the materials to be termed high-temperature superconductors. Liquid nitrogen boils at 77 K, and superconduction at higher temperatures than this facilitates many experiments and applications that are less practical at lower temperatures.