Materials Literature
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Microspheres have been widely used for tissue engineering scaffolds. Microspheres have many advantages over the macrostructure such as high surface area for cell adhesion and proliferation and low mass transfer limits. In this study, we fabricated microspheres from gelatin and silk fibroin using water-in-oil (w/o) emu…
Solid Oxide fuel cell (SOFC) is one of the potential sources of alternative energy. Investigation has been carried out to improve the power density of the intermediate temperature SOFC by optimizing the composition of the anode materials. Nickel Oxide (NiO) and Gadolinium doped Ceria (GDC) have been used as anode mate…
A solution based fabrication process of carbon nanotube (CNT) bump interconnects is proposed. In comparison to CVD growth of CNT which requires high process temperature, the proposed process has the advantage of being capable to fabricate CNT bumps at room temperature with relatively high resolution and adjustable bum…
The unusual surface plasmon modes and switching bandgap of three-dimensional (3D) photonic crystals (PCs) with pyrochlore lattices that are composed of core isotropic positive-index dielectric spheres surrounded by epsilon-negative (ENG) material shells inserted in the air are theoretically investigated in detail base…
The goal of this work was to show ageing of capacitors with metalized polypropylene film by the sinusoidal and non-sinusoidal voltage and to find how the shape of the voltage waveform influences the ageing rate. A special device, which makes forming of the voltage of the fundamental and selected higher harmonic compon…
In order to reduce the energy consumption and working procedure for manufacturing thin-walled titanium alloy components, a hot stretch-creep forming (SCF) technique via resistance heating is proposed to form the hard-to-form material. Firstly, the principle of hot SCF was introduced that the technique can manufacture…
Experimental results on studying charge exchange in iron ions in systems of reduced dimensionality (nanoclays) of natural origin is presented. The conditions for the observation and the effect of different external factors on the reversible transition of the valence change for iron ions (Fe 3+ ai Fe 2+ ) in typical re…
A model for calculating the main properties of liquid metal binary alloys at standard pressure based on experimental data observation is presented. Given the characteristics of the pure metals, the model allows to calculate density, surface tension, electrical resistivity and thermal conductivity of binary alloys at v…
We have modeled the 4f 1-5d 1 absorption spectrum of a LiYF4:Ce3+ crystal at zero temperature using a microscopic model of the electron-phonon interaction and the real spectrum of LiYF4 lattice vibrations. Effects caused by mixing of the wave functions of different states of the 5d 1 excited configuration of the Ce3+…
Mechanical properties of 3-ply Cu-Ni-Zn/Cu-Cr/Cu-Ni-Zn clad composite plates prepared by explosive bonding and cold-rolling. No intermetallic compounds were observed at the Cu-Ni-Zn/Cu-Cr interface after explosive bonding and cold-rolling and heat-treatment at 723K. The strength of as-rolled clad plate reached up to 5…
The present Dissipative Particles Dynamics (DPD) simulation study aims at extracting some correlations between velocity and temperature profiles, and dynamic viscosity with externally applied shear velocity via Lees-Edwards boundary condition. System physical and rheological behaviours are studied under changes made t…
For concrete structure durability increasingly highlight of problem, focus description has chlorine ion on concrete structure of erosion mechanism, and invaded model and effects factors, derivation out integrated consider concrete of chlorine ion combines capacity, and chlorine ion proliferation coefficient of time de…
In this paper, paraffin/polyurea (PU) phase change microencapsules were prepared through an interfacial polymerization method using composite paraffin with solid/liquid mass ratio 3:7 as core materials, 2,4 toluene diisocyanate (TDI) and ethylenediamine (EDA) as monomers, NP-10 as an emulsifier. It was explored the ef…
Effects of elemental sulfur on corrosion behavior of super 13Cr martensitic stainless steel were investigated by utilizing weight loss test, and the micro morphologies and chemical elements of corrosion scales were characterized by using SEM and EDS. The results showed that corrosion resistance of super 13Cr stainless…
Data are reported on the successful metallisation of cubic boron nitride by chemical reduction of solutions containing nickel and cobalt ions. The processes of growth of these two types of films differ substantially from each other. While in cobalt plating no screw-like dislocation mechanism film growth is observed, i…
Nanostructured manganese oxide films were obtained by electro-oxidation of manganese films electrodeposited at two typical cathodic currents of 65 mA cm-2 (EDM-65 oxide) and 150 mA cm-2 (EDM-150 oxide) from sulfate solutions with additives. Obtained Mn oxide films were studied by scanning electron microscope, X-ray ph…
The effects of SiO2 addition on Ba excessive barium titanate ceramics are discussed. The ceramics are prepared by tape casting technique, sintered in a reducing atmosphere and subsequently reoxidised in air. X-ray diffraction patterns show that no fresnoite is observed and SiO2 is incorporated in perovskite lattice. T…
The goal of this work is to present the study of the influence of the winding - double layer or single layer - to the global noise level of an induction motor. For this purpose, two variable speed induction motors have been studied, of the type M3AA 71 B2/4 manufactured by Electroprecizia S.A. Săcele, Romania, with Da…
The electron paramagnetic resonance parameters (i.e., g factor, hyperne structure constant and superhyperne parameters) of KMgF3:Cr + are theoretically investigated from the perturbation formulae of these parameters for an octahedral 3d 5 cluster. As for the calculations of g factor and hyperne structure constant, bot…
Mesoporous TiO2 material was synthesized from dissolution ilmenite as well as from titanium chloride precursor via a sol-gel process in acidic aqueous solution. The properties of these materials were characterized with several analytical techniques including scanning electron microscopy (SEM), transmission electron mi…