Materials Literature
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Unique core-shell-structured micron spheres of Si-SiC consisting of a layer of silicon carbide nanocrystallites and a silicon single-crystal core were synthesized by thermal plasma in-flight carburization of silicon micron powders in Ar-H2-CH4 plasma. Raman spectroscopy and energy dispersive X-ray spectroscopy (EDX) r…
Poly (epsilon-caprolactone) (PCL) is one of the commercial biodegradable plastics and biocompatible polyesters that can be assimilated by microorganisms. Lysinibacillus sp. 70038 which degrades PCL film was screened from stock cultures by cultivation using an enrichment culture medium containing PCL film with the weig…
The method of the charge-density functional in the tight-binding approximation is used to study the effect of different types of wall atomic defects in the MoS 2 nanotubes on their structural and electronic properties. It is shown that the atomic defects in the walls of the MoS 2 nanotubes can be responsible for the s…
The phase stability and thermoelectric properties of the layered structure of (ZnxCu2−x)V2O7 solid solutions were studied for x≥0.2. X-ray diffraction measurements, compositional studies, and thermal analysis verified that the low-temperature form of the (ZnxCu2−x)V2O7 solid solution (monoclinic structure, C2/c) was s…
One of the main challenges of quasicrystal science is to elucidate how the quasiperiodic order can extend so far, i.e. up to several centimetres according to the size of the single grains of various alloys routinely grown nowadays [M. Boudard, E. Bourgeat-Lami, M. de Boissieu, et al., Phil. Mag. Lett. 71 11 (1995); Y.…
Unidirectional isora fibre reinforced polyester composites were prepared by compression moulding. Isora is a natural bast fibre separated from the Helicteres isora plant by a retting process. The effect of alkali treatment on the thermal properties of the fibre was studied using TGA, DTA and DSC in oxygen and nitrogen…
An enhanced interference phenomenon in the IR absorbance-wavenumber profiles of ship-shaped carbon nanotubes powder has been observed by attenuated total reflection at room temperature. This room temperature interference phenomenon was considered as possibly originating from an optical resonance effect and that single…
Flashover of insulators in transmission and distribution systems may cause costly outages for power companies and their customers. Industrial and/or coastal pollution of external insulation is a major cause for such events at the normal power frequency voltage of the systems. The power companies are now facing increas…
Experimental Mg K‐edge XANES spectra were obtained for crystals and synthetic glasses. To interpret the experiments, two different ab initio XANES calculation methods were employed. The first one is based on multiple‐scattering calculations and muffin‐tin potentials (FEFF package). The second uses a plane‐wave basis s…
A very short‐period and in‐vacuum type undulator, SGU♯17 has been constructed and installed in the 2.5GeV Photon Factory storage ring, which has been upgraded to enhance the straight sections for insertion devices in the PF ring. SGU♯17 is designed to be a hard x‐ray source for protein crystallography and structural b…
Peer reviewed: Yes
This paper presents a new method of modifying sodium silicate binder with ultra-fine powders. The sodium silicate binder modified by ultra-fine powder A and the organic B can reduce the addition amount of the binder. The results indicate that the 24 h strength has increased by 39.9% at room temperature and the residua…
CexZr1-xO2 mixed oxides with different Ce/Zr ratios were prepared by coprecipitation. The characterizations of mixed oxides were studied by X-ray diffraction (XRD) and H2-TPR. And the performances were tested in a fixed-bed quartz reactor. The results indicated that lattice oxygen of CexZr1-xO2 could oxidate methane t…
Hyperbolic tilings of type {3,7}, {7,3}, {4,5}, and {5,4} are mapped onto closed 2-manifolds of genus 3 through 7 with as much symmetry as possible. All these maps exhibit local regularity which makes all vertices look equivalent, but most lack some of the global flag-transitive symmetries that are topologically possi…
Cladding materials development is crucial to realize highly efficient and high-burnup operation over 100GWd/t of so called Generation IV nuclear energy systems, such as supercritical-water-cooled reactor (SCWR) and lead-cooled fast reactor (LFR). Oxide dispersion strengthening (ODS) ferritic/martensitic steels, which…
ZnO nanowire thin film was prepared by chemical solution method and a ZnO nanowire-based electroluminescence device has been successfully developed. The device was driven by the alternating current and presented a good RC behavior. Under the action of applied bias, light emission in the ultraviolet region with the wav…
In this paper, we discuss the materials that can now be produced using a novel method for producing large quantities of high-purity metal, metal oxide, and mixed-metal oxide particles. Particles are uniform in size with dimensions that can range from 1 nm to greater than 10μm. Extraordinarily crystalline particles as…
The influence of the form of the Al-containing component, molar ratio of Na2O:Al2O3:SiO2, and the duration of isothermal curing under saturated steam at 180 °C have been examined. The results obtained experimentally show that the form of the Al-containing component (Al(OH)3 or γ-Al2O3) significantly affects the format…
The importance of work function measurement in the field of application has greatly increased. The principle of work function measurement using electron spectroscopic methods such as UPS, XPS and AES is explained. The practical tips for measurements and analysis are advised with reasons.
NacrtakThis paper presents the results of morphological analysis of the Croatian skidder ECOTRAC 120V, as well as the research of its productivity features in timber skidding from hilly terrain after preparatory felling and from mountainous terrain after selective felling.Morphological analysis was used for determinin…