Materials Literature
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It has been shown that BaFe12O19 is a perspective room-temperature multiferroic material. A large spontaneous polarization was observed for the BaFe12O19 ceramics revealing a clear ferroelectric hysteresis loop. The maximum polarization was estimated to be approximately 11.8 μC/cm2. The FeO6 octahedron in its perovski…
A novel branched amphiphilic macromolecule on the basis of a sensitive Si–O–C structure was synthesized through a one-pot procedure. The self-assembly behavior of the molecule was tunable in non-aqueous media and the aggregates exhibited water stability thanks to the formation of vesicles with multichamber structures,…
To provide a faster calculation of the block copolymer phase diagrams a simplified version of the self-consistent field theory (SCFT) is proposed. Multi-component block copolymers with interactions between repeated units described by the χ-parameters satisfying the Hildebrand conditions are studied. This case is shown…
Objetivo. Evaluar la fibroína de la seda obtenida del gusano de seda Bombyx mori L como material de soporte para el crecimiento de células mesenquimales estromales de pulpa dental (CMPD).Métodos. La fibroína fue obtenida a partir de capullos de gusanos de seda Bombyx mori L criados en la Granja El Pílamo, propiedad de…
Summary This paper investigates into the unexpected nanosize Fe‐enriched particles with defects incorporated, using EDS under STEM mode and atomic‐resolution HAADF. The particle that locates between eutectic Mg12Ce phase and α‐Mg phase is identified as CeFe2Si2 compound. Two types of defects are incorporated: Type‐I d…
Halogens can be used to steer the catalytic selectivity of transition metal surfaces. In the present work the structures of bromine on Pd(110) in the low-coverage c(2 × 4) and the high-coverage c(4 × 2) adlayers are investigated by density functional theory calculations and quantitative low-energy electron diffraction…
A large amount of metal dust in beryllium and tungsten are produced owing to the interaction between the plasma and the first wall during normal operation of a fusion facility, and deposit on the inner surface of the vacuum vessel. In accidental scenarios such as loss of vacuum accident, the deposited dust particles a…
The present study investigated preparation of bovine and porcine erythrocyte membranes from slaughterhouse blood as bio-derived materials for delivery of dexamethasone-sodium phosphate (DexP). The obtained biomembranes, i.e., ghosts were characterized in vitro in terms of morphological properties, loading parameters,…
The purpose of the study is to access the applicability of full factorial experimental design in predicting mechanical properties of polypropylene based composites. The polypropylene based composites reinforced with kenaf fibers were manufactured by melt mixing and consequently compression molded. For all manufactured…
We compared the effect of nitrogen plasma immersion ion implantation and dielectric barrier discharge \nsurface treatment on the wettability of two engineering polymers: PTFE and PA6. We found that NPIII is capable to \nmake the surface either hydrophilic or superhydrophobic depending on the operating parameters (flue…
Keywords: Stingless bees’ propolis, Polyvinyl alcohol, Nanofiber, Antioxidant Objectives: The goal of this study was to develop electrospun nanofiber mats containing stingless bee’s propolis extracts and evaluated in vitro antioxidant activity via (2,2-diphenyl-1-picryhydrazyl (DPPH)) method. Methods: Polyvinyl alcoho…
Abstract Layers of metal organic framework (MOF) crystals on skeletal Cu were prepared. The use of DMF as a solvent led to the deposition of densely packed MOF crystals on skeletal Cu and to high catalytic activity in the gas-phase hydrogenation reaction of ethylene.
A metamodelling technique for the efficient design optimisation of the electromagnetic response of metasurfaces is proposed. Metamodels are built starting from data samples of design performance parameters properly extracted from a few electromagnetic simulations using a system identification approach. The metamodels…
We report on the experimental fabrication and functioning of an optical fiber sensing probe operating on the principle of a localized surface plasmon resonance (LSPR) at near infrared (NIR) wavelengths, around the 2-μm window. As indium-tin oxide exhibits an absorption peak at NIR wavelengths, we have synthesized and…
Lean sintered steels can be defined as low alloyed steels with a content of alloying elements <3 wt.-%. Chromium is widely used as an alloying element in low alloyed wrought steels, since it gives good mechanical properties at a low cost. Chromium as alloying element in PM steel is of great interest because of the pos…
The flash method, known as the most used experimental technique to measure the thermal diffusivity of solids, has been adapted to cylindrical highly diffusive and heterogeneous multilayered samples. In order to overcome the heterogeneities issue and give a more accurate estimation of the sample thermal properties, the…
We have investigated the potential of polymers containing precisely spaced side-branches for thin film applications, particularly in the context of organic electronics. Upon crystallization, the side-branches were excluded from the crystalline core of a lamellar crystal. Thus, the surfaces of these crystals were cover…
Density of states is a fundamental physical characteristic that lies at the foundation of statistical mechanics and theoretical constructs that derive from them (e.g., kinetic rate theories, phase diagrams, and others). Even though most real physical systems are anharmonic, the vibrational density of states is customa…
Macrocosm experiments at various scales have been applied in lake eutrophication management worldwide. This study investigated how artificially created macrocosms affect the physicochemical characteristics of lake water, as well as the density, community structure, and biodiversity of benthic diatoms. First, we found…
Synchrotron powder diffraction, magnetization, and specific heat measurements have been used to investigate the structural and magnetic phase transitions in the spinel-type vanadate Fe(V1-x Cr x )2O4 (0.0 ⩽ x ⩽ 1.0). We observed five different transitions in our polycrystalline samples. The canted-type ferrimagnetic p…