Materials Literature
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Self actuated shutdown system (SASS) with a Curie point electromagnet (CPEM) has been developed for use in a large-scale liquid metal cooled fast breeder reactor (LMFBR) in order to establish the passive shutdown capability against anticipated transient without scram (ATWS) events. The basic characteristics of SASS ha…
The composition region and structure of La1−x Sr x Co1−y Fe y O3−δ solid solutions are determined by x-ray powder diffraction using the Rietveld profile analysis method. The solid solutions based on lanthanum cobaltite, LaCoO3−δ, have a rhombohedrally distorted perovskite-like structure (sp. gr. R $$\bar 3$$ c), and t…
The substrate specificity of Lemnicola hungarica (Grunow) Round et P.W. Basson was studied on five Lemnaceae species using material from the Herbarium Generale of the Hungarian Natural History Museum. Diatom assemblages inhabiting Lemna minor, Lemna gibba, Spirodela polyrhiza and Wolffia arrhiza were dominated by Lemn…
In this paper analytical and multiquadric radial basis function methods are applied to analyze the mechanical behavior of banana fibers reinforced with low‐density polyethylene/polycaprolacton composites. In addition, mechanical properties of banana fibers reinforced with low‐density polyethylene/polycaprolacton compo…
Artificially designed Pb(Zr,Ti)O3 (PZT)∕PbZrO3 (PZ) superlattices were grown on (100)-oriented SrTiO3 (STO) substrates with and without SrRuO3 bottom electrodes by pulsed laser deposition. Their microstructure was characterized using x-ray diffraction and transmission electron microscopy. Different from single PZT fil…
Luminescent silicon nanocrystals (Si-ncs) prepared in colloidal suspensions are a potentially very important material for future optoelectronics, biology, photonics etc. We report on fabrication of luminescent Si-ncs in deionized water. The Si-ncs were formed at room temperature by two different techniques: (1) red lu…
We discuss three different approaches towards ferroelectric control of thin film magnetism and recent experimental results. Firstly, ferromagnetic films of doped LaMnO3 were grown on piezoelectric Pb(Mg1/3Nb2/3)0.72Ti0.28O3(001) crystals and have been strained reversibly by up to 0.15%. The strain modulation is accomp…
A simple procedure based on gelatification, promoted by the ring-opening reaction of propylene oxide, was proposed for the synthesis of alumina, in which hydrated aluminium nitrate (Al(NO3)3·9H2O) was mixed with propylene oxide and gelated in ethanol solvent. After being dried and calcined under air atmosphere, a kind…
Nanotechnology involves working at the atomic, molecular, and macromolecular levels including imaging. Recently, four areas have emerged in cardiovascular imaging: 1. Targeted therapeutics to deliver cardioprotective drugs at the target sites they are needed; 2. Myocardial tissue engineering to replace the defective v…
Abstract A novel comb‐like derivative CPEG‐ g ‐cholesterol was prepared by the reaction of cholesteryl chloroformate with hydroxyl groups of CPEG. The TEM and SEM results showed that CPEG‐cholesterol spontaneously aggregated vesicles with the membrane thickness of 4.27 ± 0.48 nm. Compared with the vesicles formed by c…
The potential use of chitosan, as an antifungal agent to reduce anthracnose disease on papaya during storage was investigated. Chitin extracted from locally available prawn waste was used to prepare N,O-carboxymethyl chitosan. The effective concentration of chitosan formulation (from 0.1 to 3%) to inhibit radial mycel…
In this paper, the periodic analysis of candidate plasmonic topologies for the implementation of left-handed media at optical frequencies is pursued through a triangular-mesh-based finite-difference time-domain (FDTD), equipped with Floquet boundary conditions. The technique is shown to possess excellent convergence a…
Abstract Optical properties of vitreous SiO 2 with 7.4 wt.% TiO 2 are found by dispersion analysis of reflectivity measured in the infrared, visible, and ultraviolet augmented with literature values of vacuum‐ultraviolet reflectivity and absorption. The principal infrared absorption associated with the titanium dopant…
A range of wool knit fabrics designed to be used in garments worn next to or near the skin was examined to establish if differences in responses to water vapor and to water were detectable. The three-block experimental design involved six fabrics (non-dyed), and fabric responses on the dynamic sweating hotplate and on…
Experimental data are presented which demonstrate that plasma electrolytic processing of aluminum and titanium in room-temperature aqueous solutions containing tungstate iso-and heteropolyoxoanions is a viable approach to producing Al/Al 2 O 3 /WO 3 and Ti/TiO 2 /WO 3 structures. Tungsten trioxide can be obtained both…
Beryllium is planned as a plasma-facing material for ITER covering most of the inner wall of the plasma vessel. It is thus subjected to intense fluxes of escaping hydrogen ions from the plasma, which are implanted and retained in the plasma-facing material. As beryllium reacts very quickly with oxygen and especially w…
A new boron nitride polymorph is prepared for the first time by supercritical fluid synthesis in a high-pressure gazostat at a pressure P < 200 MPa and a temperature T < 1000°C in various atmospheres. The formation of the new phase is confirmed by x-ray diffraction and infrared absorption spectroscopy. A number of lin…
Manufacturability of most electronic devices based on carbon nanotubes depends on the ability to place, manipulate, and control individual structures at the molecular level. This approach is problematic due to the precise placement and registration required thus making large scale manufacturing difficult if not imposs…
A new structural model is proposed for cubic nitroprussides and the crystal structure for the complex salts of Fe(2+), Co(2+), and Ni(2+) refined in that model. In cubic nitroprussides the building unit, [Fe(CN) 5 NO] 2− , and the assembling metal ( M =Fe 2+ , Co 2+ , Ni 2+ ), have ¾ occupancy with three formula units…
Abstract Skim rubber (SR) was obtained by coagulation of the serum phase separated in the course of preparation of concentrated natural rubber (NR) latex. Saponified skim rubber (SSR) was prepared by soaking of SR with aqueous sodium hydroxide. The effect of non-rubber components on the thermal oxidative degradation o…