Materials Literature
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Lophocereus schottii is a Mexican cactus known as garambullo whose bark is used for the treatment of cancer, diabetes, ulcers, sores, stomach disorders and tuberculosis. The aim of this study was to evaluate the cytotoxic effect of the ethanolic extract of bark of L. Schottii. To assess these effects we established a…
Ceramic compositions [Ba(Nd0.1Ti0.8Nb0.1)O3](1-x) [Na0.5Bi0.5TiO3]x with x = 0.0, 0.25, 0.40, 0.50, 0.55, 0.60, 0.65 and 0.70 were prepared by modifying the relaxor dielectric material Ba(Nd0.1Ti0.8Nb0.1)O3 with ferroelectric Na0.5Bi0.5TiO3 using conventional solid state sintering route. The X-ray diffraction studies…
a a a b ( a 014010) ( b 350108) DFT DFTU Ca, Ba, Sm Zr CeO 2 . , , ; , ; , CeO 2 , Zr Sm CeO 2 , Fermi ; CeO 2 , Ca 2 Ba 2 Ce 4 , Fermi ; CeO 2 Zr CeO 2 Ce 3 , Ce4f O2p , CeO 2 ; Ca, Ba Sm CeO 2 Ce 4 . NEB , , ; Ca, Ba, Sm Zr , CeO 2 ; , Ba , , Ba.
Sodium lead slag, generated during secondary lead production, is characterized as hazardous waste. The aim of the study was to investigate leaching mechanism and behaviour of lead and arsenic from sodium lead slag previously stabilized/solidified in concrete using additives: MgO, CaO, Ba(OH) 2 and gypsum. The influenc…
Hydrophobic surface can be achieved by synergistic effect of lowering of surface energy and increase in surface roughness. Present work emphasizes on the development of thin hydrophobic sol-gel coatings on aluminium substrate using a long chain C-16 silane precursor i.e., Hexadecyltrimethoxysilane (HDTMS) crosslinked…
Multiferroics in which ferroelectric and ferro(antiferro-) magnetic (and/or ferroelastic) properties are simultaneously combined in one material are a subject of intensive research due to prospective applications as, e.g. next-generation memory storage materials [11]. The Aurivillius phases of the Bi4Ti3O12-BiFeO3 sys…
Preface Introduction Natural & Man-made Sources of Tritium: Applications of Tritium The Deuterium-Tritium Fuel Cycle Tritium Production in Breeding Blankets.
Background: To analyze differences in the distributions of waist circumference (WC) and waist-to-height ratio (WHtR) between Polish (PL) and German (GE) children and adolescents. Methods: Two samples of children and adolescents aged 7-18 y: From PL ( n = 11,326) GE ( n = 8,218) participated. The two WC cut-off points…
To elucidate and to control polypyrrole (PPy) attachment to diamond we electrochemically grow PPy layers on hydrogen- and oxygen-terminated boron doped diamonds (BDD). Atomic force microscopy (AFM) shows that the PPy layers have similar morphology (15 nm features) and thickness (> 5 nm) on H- and O-BDD. To resolve typ…
Rosin poly(oxyethylene) ester 4,5-dihydroimidazole maleate Adduct (RIMA-PEG), has been applied as corrosion inhibitor for carbon steel. Experimental data for the inhibition efficiency using potentiodynamic polarization, electrochemical impedance spectroscopy (EIS) technique and theoretical quantum chemical calculation…
This paper provides a methodology to estimate power versus distance envelops of High-Voltage Alternating Current (HVAC) transmission system for subsea applications. AC technology is mature and proven for land-based applications and relatively short off-shore tiebacks. However, for long tiebacks, due to increased condu…
This study is concerned with the thermal vibration analysis of a short single-walled carbon nanotube embedded in an elastic medium based on nonlocal Timoshenko beam model. A Winkler- and Pasternak-type elastic foundation is employed to model the interaction of short carbon nanotubes and the surrounding elastic medium.…
High-quality VO2 thin films are deposited on the metal platinum (Pt) electrode buffered by silicon dioxide (SiO2) using radio frequency magnetron sputtering. The effect of the thickness of SiO2 on the the crystal structure, morphology and metal-insulator transition (MIT) performance of the films are discussed. Results…
There is a renewed surge in percolation-induced transport properties of diverse nanoparticle composites (cf. RSC Nanoscience & Nanotechnology Series, Paul O'Brien Editor-in-Chief). We note in particular a broad interest in nanocomposites exhibiting sharp electrical property gains at and above percolation threshold, wh…
In this report, a novel hyaluronan/PVA-SbQ composite film was prepared by casting method. The miscibility and morphology of the films were investigated by Fourier transform infrared (FTIR) spectroscopy and scanning electron microscopy (SEM). The surface hydrophobicity and the thermal properties of the composite films…
Formal kinetic analysis of reduction process of the Cu-based layered double hydroxide – LDH catalyst precursor for methanol synthesys was implemented. The process was studied by means of thermogravimetry (TG) and Differential scanning calorimetry (DSC) with respect to changes taking place in gas phase, which was analy…
Among industrial alloys, cast irons have the most variable characteristics with the lowest price; of these groups, ADIs have been attracted in industry because of their favorite properties to be replaced by forged steels. One of these properties is their desirable wear behavior. The predominant wear mechanism in ADIs…
A energia presente na biomassa pode ser convertida emcombustiveis liquidos, solidos e gasosos. Os residuos agricolas (consideradoscomo biomassa) armazenam energia consideravel para ser aproveitada. OBrasil, por apresentar grandes dimensoes cultivaveis, solo e condicoesclimaticas adequadas, afigura-se como um dos maior…
Corrosion resistance of aluminium alloys is related to the composition and morphology of the oxide film on the surface of aluminium. In this paper we investigated the use of steam on the surface modification of aluminium to produce boehmite films. The study reveals a detailed investigation of the effect of vapour pres…
To evaluate the permeability for columnar dendritic structures, three dimensional (3D) flow simulations of interdendritic liquid were carried out. The 3D columnar dendrites were made by means of the computer aided design (CAD), which were based on two-dimensional dendrite morphologies calculated by a phase-field metho…