Materials Literature
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Most of the electrical components (transistors, resistors, etc.) are thermally sensitive elements. Thermal coupling between elements of integrated circuits is a well-known parasitic effect, which must be taken into account in the design process.
Metamaterials represent a new paradigm in electromagnetic science and technology. They have already leaded to many unprecedented microwave applications, which may be classified in three categories: guided-wave, radiated-wave and refracted-wave applications. Radiated-wave applications cover several types of novel anten…
Abstract In this paper it is stated, that a set of quality features of metal matrix composite castings differs from the same set for castings of classic materials, although some features are common for both of these material groups. These features (pertaining to a set of quality characteristics of composite castings)…
The repeated refinement of the crystal structure of zirconium-rich eudialyte based on the X-ray diffraction data set collected earlier revealed new structural features. The trigonal unit-cell parameters are a = 14.222(3) Å, c = 30.165(5) Å, V = 5283.9 Å 3 . The refinement resulted in the reduction of the R factor from…
The false twist texturing method is one of the most common texturing techniques. This process depends on parameters such as tension, twist, and heater temperature. As false-twist texturing is a process which includes close interactions between machine working parameters and textured yarn properties, the effect of proc…
In this paper microstructure, morphology, elemental composition, phase composition and crystal structure of the sample steel R6M5 were investigate by using the methods of scanning electron microscopy, electron backscatter diffraction (EBSD) analysis and X-ray diffraction (XRD) analysis. Determined that the microstruct…
This paper concerns the idea of using magneto-mechanical effects in prophylactic activities to reduce the risk of occurrence of an extensive blackout on high voltage (HV) lines. The subject matter of the paper is related to the event from April 8, 2008, which deprived approximately 600,000 recipients from 18 cities of…
Present work analyzes the influence of process and modified geometry parameters of an orthogonal final machining process (finishing) on the nanocrystalline surface layers generation by quantitative microstructural analysis. Thereby, AISI 4140 (German Steel 42CrMo4) in a state quenched and tempered at 450°C is used as…
ZnO-Zn and ZnO-Zn-Cu nanopowders with a high specific surface (up to 68 m 2 /g) is obtained by pulsed electron evaporation. The characteristics of nanopowders (NPs) are investigated by X-ray phase analysis (RPA), high-resolution transmission electron microscopy (HR TEM), electron diffraction analysis, differential sca…
Under the US Fusion Nuclear Science and Technology Development program, we have selected the Dual Coolant Lead Lithium concept (DCLL) as a reference blanket, which has the potential to be a high performance DEMO blanket design with a projected thermal efficiency of >40%. Reduced activation ferritic/martensitic (RAF/M)…
When designing compact gas-solid insulating systems for use under high direct voltages, special attention has to be paid to the electric field distribution, in particular its transient behavior.After energizing an insulating system with a direct voltage, the initial capacitive electric field distribution on the insula…
The employment of the Debye function to model line profiles in the powder diffraction pattern from small crystallites is briefly reviewed. It is also demonstrated that for the case of very small spherical particles, it is necessary to average patterns from multiple constructions of the particle to have complete agreem…
Many N -acylhydrazone derivatives synthetized in LASSBio ® cannot be prepared as single crystals of sufficient size and/or quality for structure determination to be carried out using single crystal X-ray diffraction techniques. This article highlights the opportunity for determining crystal structures of this class of…
This paper describes the use of the Tafel polarization and electrochemical impedance spectroscopy technique (EIS) in order to study the corrosion inhibition process of aluminum in 0.5M H 2 SO 4 solution in presence of propargyl alcohol and zinc sulfate at the open circuit potential (OCP) in the room temperature. The N…
In order to investigate the feasibility of dynamic loss minimization for DC-to-DC converters by control methods, transient core loss analysis for soft magnetic composite material is presented in this paper. A practical calculation model based on equivalent elliptical loop (EEL) model is developed to obtain the transie…
BACKGROUND: Encapsulating exogenous proteins into a nanosized particulate system for delivery into cells is a great challenge. To address this issue, we developed a novel nanoparticle delivery method that differs from the nanoparticles reported to date because its core was composed of cross-linked dextran glassy nanop…
A general method to characterize the electromagnetic polarizability tensor of electrically small particles through numerical simulations is proposed. Polarizability tensors of several resonators previously used for designing metamaterials have been retrieved. The Method of Moments has been used in order to calculate t…
Abstract The paper brings the results of directional solidification of Fe-Fe3C eutectic alloy. The Bridgman method with vertical thermal gradient in conducted research was applied. Two values of rate was used for sample movement testing. One sample after solidification, was immediately taken of the cooler. The distrib…
A “dark” copolyimide with regularly grafted side chains of polymethacrylic acid and a luminescence-labeled copolyimide containing an anthracene label covalently attached to side chains with an average polycondensation degree of the polyimide backbone of ∼16 and an average polymerization degree of side poly(methacrylic…
P AMAM dendrimerler, bir merkezden buyuyen cok duzgun bir yapiya sahip, cok dalli ve kuresel uc boyutlu molekullerdir. Ic yuzeylerinde bulunan bosluklar ve dis yuzeylerinde yeralan cok sayida terminal grup sayesinde plazmid DNA, oligonukleotidler, antikorlar ve cesitli ilaclarla stabil kompleksler olusturabilirler. PA…