Materials Literature
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The reaction kinetics of the metal exchange Cd(II)-Cu(II) and Cd(II)-Zn(II) in the cadmium complexes (CdP) with porphyrin ligands (H 2 P) differing by degree of stiffness (tetraphenylporphin, N -methyltetraphenylporphin, and tetraphenyltetrabenzoporphin) in the DMSO medium, was studied using spectrophotometric method.…
Author: Lohmüller, T. et al.; Genre: Book Chapter; Issued: 2010; Keywords: MPI für Metallforschung; Abt. Spatz; ; Title: Improved properties of optical surfaces by following the example of the "Moth Eye"
Problem statement: There is no specific instrument to test ultrasonic dental scalers used in dentistry. Approach: The aim of this research was to develop and test an innovative cavitometer for quantitative and automatic performance assessments of Ultrasonic Dental Scalers (UDS) through the acoustic emission produced b…
The second-order nonlinear optical properties of two monomeric red fluorescent proteins, mStrawberry and mCherry, have been experimentally determined by frequency-resolved femtosecond hyper-Rayleigh scattering. These proteins were found to exhibit a stronger nonlinear response than the previously described eGFP, eYFP…
Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation Michito Kawasaki, Zhen He, Yasuhito Gotoh, Hiroshi Tsuji, Junzo Ishikawa; Development of in situ…
The classic anisotropic spherical cloak can be mimicked by many alternating thin layers of isotropic metamaterials [Qiu et al. Phys. Rev. E 79 (2009) 047602 ]. We propose an improved method of designing permittivity and permeability in each isotropic layer, which eliminates the jumping of the refractive index at the i…
In order to enhance the bonding force of sisal fibres (SF) and polymer matrix, different surface modifiers (alkali, coupling agent and borax) were used to treat the fibres. The SF/phenol formaldehyde (PF) resin composites were prepared through compression moulding. Thermal properties of the treated SFs and fibre compo…
The method of Mössbauer emission spectroscopy on 119m Sn nuclei was used to study grain boundaries in submicrocrystalline Nb produced by the method of equal-channel angular pressing (ECAP) of poly-crystalline Nb (99.9%). ECAP included 16 passes at room temperature.
Mössbauer spectra of raw kaolins generally comprise components from iron bound in the structures of kaolinite minerals and iron in ancillary minerals. Of the latter, iron oxides are among the most detrimental to industrial uses. Although a distinction of structural and oxidic iron is generally possible if the oxides a…
Recent ideas on the oxidation of ZrB2-SiC are presented, emphasizing the behavior of the boria-silica-zirconia liquid (BSZ liquid) which forms during oxidation and flows to transport silica and zirconia to the surface of the scale. Oxide film microstructure is strongly influenced by the boron oxide, which acts as a vo…
The microstructure of platelike Nd-Fe-B alloys prepared by rapid quenching from the melt, namely, by the strip casting technique, has been studied. The processes of grain refinement, texture formation, and sintering were optimized. It is shown that the maximum energy product ( BH ) max ≥ 50 MGOe can be realized in sin…
Polyethylene (PE) film was coated with nanosilica-polyurethane layer using rod Mayer process. The nanosilica-polyurethane system was prepared by dispersing nanosilica (SiO2) powder into solvent borne polyurethane (PU) binder under vigorous stirring. Various compositions of nanosilica-polyurethane slurry were prepared.…
Abstract ZnO nanostructured powders have been prepared at low temperature and atmospheric pressure by thermal decomposition of solid precursors. Two alternative methods have been explored by using: (i) commercial zinc acetate dihydrate and (ii) a solid mixture obtained after the evaporation of a solution of zinc aceta…
Attempts have been made to synthesize nano-polycrystalline diamond (NPD) from graphite at pressures of 12, 13 and 14 GPa at temperatures 2200-2600°C using multi-anvil apparatus. The lower temperature limit for NPD formation increased with decreasing pressure, and we found that pure NPD can be synthesized even at the l…
The detailed characterisation of nanoparticles is a crucial point in their further application. Without knowledge about their sizes, composition and lengths of ligands nanoparticles could not be used effectively. For example without information about diameters engineers are not able to design jet which with high effic…
Two nanopowders with superparamagnetic Fe 3 C particles were synthesised by the method of laser-induced pyrolysis of gaseous precursors. Both were characterised by X-ray diffraction, Mössbauer spectrometry and standard magnetic measurements. The mean crystallite size of Fe 3 C was 3 nm for the first sample and 10 nm f…
A small poultry incubator was designed and constructed at the Agricultural Engineering Research Institute. It was fabricated to be very cheep and very simple, so it may be utilized to produce a chick for a small farmer. The incubator was fabricated from local materials like wood, automatic thermostat to maintain the t…
Eu3+ single-doped and Bi3+/Eu3+ co-doped nanocrystal Gd2WO6 phosphors were successfully synthesized via a co-precipitation reaction. The structure and morphology of the phosphors were characterized by using X-ray powder diffraction (XRD) and field emission scanning electron microscopy (FE-SEM). The influence of Bi(3+)…
Electrical Treeing Propagation in Nanocomposites and the Role of Nanofillers: Simulationwith the Aid of Cellular Automata In this paper the propagation of electrical treeing in nanodielectrics using the DIMET (Dielectric Inhomogeneity Model for Electrical Treeing) is studied. The DIMET is a model which simulates the g…
Abstract Corrosion behavior of sintered NdFeB magnets in nitric acid and oxalic acid was investigated. The experiment results indicated that NdFeB is strongly corroded in nitric acid solution, and is passivated in oxalic acid solution. Based on the corrosion behavior, the possible corrosion mechanisms are discussed.