Materials Literature
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Mixed oxides with formula LaFe1-xCrxO3 and Fe2-2xCr2xO3, where 0≤x≤1, are studied. The samples have been prepared using solid state reaction technique in air. The X-ray diffraction spectra indicated that the samples crystallize in a corundum phase with space group ( R3c ) for Fe2-2xCr2xO3 and in the perovskite structu…
Manganese zinc ferrite is a soft ferrite material that has been used in many applications including catalyst. Therefore, studies on the mechanical and magnetic properties are very important in order to enhance the performance of the catalyst. This study will compare the mechanical and magnetic properties of manganese…
The electronic and structural properties of poly[N-(2-cyanoalkyl)pyrrole]s bearing short alkyl groups have been investigated using different methodologies. Specifically, the electronic properties of poly[N-(2-cyanoethyl)pyrrole], which was prepared by anodic polymerization, have been determined using both electrochemi…
The structure of phosphorus selenide glasses with compositions close to the P(4)Se(3) stoichiometry with and without doping with a few atom % Ge has been investigated with Raman and (31)P NMR spectroscopic techniques. The results indicate that the structure of these glasses consists predominantly of P(4)Se(3) cage mol…
We report on the structural, morphological, and luminescent properties of Y2O3:Yb3+ (2%)–Er3+ (1%) nanofibers synthesized by a hydrothermal method as a function of the solvent composition ethanol/water. The average length and diameter of the nanofibers ranges from 1.1 to 2.3 μm, and from 50 to 110 nm, respectively. A…
Abstract Cu–Nb–O films with a thickness of ca. 150 nm were prepared on borosilicate glass substrates using CuNbO3 ceramic target at substrate temperature of 500 °C by pulsed laser deposition. The X‐ray diffraction patterns showed that the Cu–Nb–O films were amorphous or an aggregation of fine crystals. The post‐anneal…
Biodegradable magnesium alloys have been widely investigated in the field of biomaterials because they can be gradually dissolved and absorbed by the human body without long‐term existence. However, it was found that bare magnesium implants suffered from rapid corrosion. Surface modification is applied to improve the…
Nephrogenic systemic fibrosis (NSF) is a fibrotic disease that presents with a history of renal dysfunction. The differential diagnosis generally includes scleromyxedema, systemic sclerosis, and morphea. Especially, scleromyxedema can be extremely difficult to distinguish microscopically. Although the fibrocytes in NS…
A detailed muon spin relaxation ($\ensuremath{\mu}$SR) and magnetization study is presented of the paramagnetic-to-ferromagnetic transition in the compound ${\mathrm{SrFe}}_{0.80}{\mathrm{Co}}_{0.20}{\mathrm{O}}_{3}$. The critical exponents derived from the static critical analysis are close to the theoretical predict…
Using first-principles total energy calculations we investigate the structural, elastic and electronic properties of new hypothetical oP(12)-type phase RuB(2) and OsB(2). The calculations indicate that the oP(12)-type phase RuB(2) and OsB(2) are thermodynamically and mechanically stable. Remarkably, the new phases RuB…
Abstract The aim of the present article is to study the different phenomena which are at the basis of the consolidation of commingled thermoplastic semi‐pregs made of amorphous polyester fibers and E‐glass reinforcement. The evolution of the void fraction during the consolidation of the composite was monitored by a dy…
Poly(buthylene terephthalate)(PBT)/single wall carbon nanotubes (SWCNTs) composite nanofibers were prepared by electrospinning. The effect of carbon nanotubes on the morphology, crystallization, and mechanical properties of the electrospun composite nanofibers were investigated by SEM, DSC, and tensile testing, respec…
Abstract The dimeric, tetranuclear manganese(II)‐substituted sandwich‐type phosphotungstate complex has been synthesized in high yield using a straightforward one‐pot synthesis by reacting commercially available H3[PW12O40] with MnCl2. The complex has been characterized by single‐crystal X‐ray structure analysis. The…
The purpose of this study was to investigate the cytotoxicity and oxidative stress responses of selected engineered carbon and titanium dioxide (TiO2) nanomaterials to rainbow trout (Oncorhynchus mykiss) primary hepatocytes. The engineered nanomaterials tested were C(60) fullerenes, multiwall nanotubes (MWNT), single-…
Abstract L‐Asparaginase is a protein produced by Escherichia coli and exists in two types, A and B. Only type B shows a specific antitumor activity to acute lymphatic leukemia. A new recombinant E. coli BL21Gold (DE3) pET11a‐ansB was used to produce L‐asparaginase B in higher quantities. To enhance the purity and pres…
Various porous titania photocatalysts are analyzed three-dimensionally in real space by electron tomography. Shapes and three-dimensional (3D) distributions of fine pores and silver (Ag) particles (2 nm in diameter) within the pores are successfully reconstructed from the 3D data. Electron tomography is applied for me…
Abstract Industrial crystallization processes are frequently bound to the application of additives. Additives can modify the crystal morphology. Computer methods allow a precise prediction of the crystal modifications induced by additives. The effect of water as additive molecule on crystal morphology predictions by m…
BACKGROUND: The evolutionary tree of 3-deoxy-D-manno-octulosonate 8-phosphate (KDO8P) synthase (KDO8PS), a bacterial enzyme that catalyzes a key step in the biosynthesis of bacterial endotoxin, is evenly divided between metal and non-metal forms, both having similar structures, but diverging in various degrees in amin…
A series of mesoporous molecular sieve samples have been synthesized hydrothermally by using cetyltrimethylammonium bromide (CTAB) as a template, tetraethyl orthosilicate (TEOS) as a silica source, tetramethyl ammonium hydroxide as a base source and water as a solvent. The samples were prepared by adding required amou…
General features of the order parameter distribution in barium titanate in its paraelectric phase and in its ferroelectric phases (tetragonal and orthorhombic) are presented. The density of probability of the polarization [Formula: see text], defined by an average of the local order parameters over regions of various…