Spectral aspect of the onset of subharmonic Shapiro steps in a chain of Josephson junctions connected in parallel

A chain of parallel-connected Josephson elements described by a resistive model is considered as a model for high-temperature Josephson junctions. The calculated spectra of the Josephson generation can account for the experimentally observed subharmonic Sapiro steps on the current-voltage characteristic and for their aperiodic dependence on the external magnetic field. Pis’ma Zh. Tekh. Fiz. 24, 45–52 (September 12, 1998)     

Periclase-Carbon Components for Use in the Refractory Lining of the Steel-Tapping Channel of a 370-Ton Converter

Tests of periclase-carbon blocks for the converter's steel-tapping channel available from the Kombinat Magnezit JSC were carried out in an oxygen-converter shop at the Magnitogorskii Metal-and-Steel Works JSC. The new refractory materials are shown to have a higher endurance as compared to the conventional periclase blocks, which made it possible to increase the operational efficiency of converters.     

Use of Periclase-Carbon Refractories for the Lining of 385-Ton Steel-Teeming Ladles for a Furnace-Ladle Unit Installed in an Oxygen-Converter Shop at the Magnitogorskii Metal-And-Steel Works Joint-Stock Co.

Refractories and Industrial Ceramics -     

Systematic Analysis of Viscoelastic-Plastic Properties of Marine Polymer Ropes

Fibre Chemistry - Methods of systematic analysis of the viscoelastic-plastic properties of marine polymer ropes are considered, which make it possible to qualitatively assess the operational and...     

Characterization of microdevices for ferrous chloride separation for biosensing applications

Ferrous chloride has a variety of applications such as a reducing flocculation agent in waste-water treatment, especially for wastes containing chromate, in the laboratory synthesis of iron complexes and it is employed as a reducing agent in many organic syntheses. The device used for experiment was fabricated on the silicon wafer as support for two electrodes in a SU8 polymer microchannel with an inlet, for the injection of aqueous solution of ferrous chloride, and two outlets, for the two by-products of separated solutions. The various parameters of the device were measured by White Light Interferometer (WLI) and Scanning Electron Microscopy (SEM). The magnetic field created by applying different types of potential between two electrodes determined ferrous chloride to separate in ferrous oxide and chlorine (in gaseous form). If a protein is added in this solution we have the possibility to immobilize the protein on the iron particles and on the channel area. The electrical results were collected using a semiconductor system analyzer Keithley and were examined subsequently. The Fe complexes deposited on the electrodes were characterized by XRD analyses.     

Web-service based architecture to support SCM context-awareness and interoperability

Integration of Web-Services and “smart objects” in supply chain manufacturing systems (SCM) enables enterprise innovation and competitiveness in a globalized economy. The paper proposes a web-service based architecture for SCM that enables enterprises to develop context-awareness and to achieve interoperability at data, services, processes and business levels using event based web service notifications. The architecture is analyzed and implemented following the case study of an enterprise in the automotive industry.     

Metal oxide bicrystal Josephson junctions of a new type with high critical parameters

Film bicrystal Josephson junctions of a new type based on a metal oxide high-T _c superconductor of the YBa₂Cu₃O_7−x (YBCO) system are suggested and studied. In junctions of the new type, in contrast to the known ones, the working surfaces situated on the opposite sides of the bicrystal interface have different crystal orientations: one is (001)YBCO, and the other is rotated (misoriented) relative to it by an asymmetric bicrystal angle around a certain axis lying in the substrate plane. The main electrical and dynamic (microwave) characteristics have been determined for junctions of the new type based on NdGaO₃ bicrystal substrates with the misorientation angle varying from 13° to 28°. These junctions exhibit high values of the critical parameters at T=77 K, including the critical current density I _C= (2–5)×10⁵ A/cm² and the characteristic voltage V _C=I _C R _N=0.6–0.9 mV. Advantages of the bicrystal Josephson junctions of the new type over the known junctions are considered.     

Decomposing regional business change at plant level in Italy: A novel spatial shift‐share approach

In this paper, spatial shift‐share decomposition is analysed when applied to Italian data on regional business change at plant level, over the period 2004–2009. A new type of spatial decomposition, which looks more effectively at neighbourhood influence, is introduced here. Notable results emerge from the empirical investigation. First, it can be seen that the spatial level of aggregation greatly affects results. Second, evidence of neighbourhood advantage in the Southern NUTS 3 regions is found, together with opposite results for the Central‐Northern NUTS 3 regions. Finally, evidence of positive industrial mix effects is only found in Central‐Northern Italy.