Materials Literature
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Engineered tissue constructs are inherently limited by their lack of microvascularization. Evidence suggests that combining a scaffold material with cells and their cell-secreted signals instigates tubule formation, and various strategies can be employed to tailor the vascular response. This review focuses on rational…
We investigate the electronic structure of graphane with hydrogen vacancies, which are supposed to occur in the process of hydrogenation of graphene. A variety of configurations is considered and defect states are derived by density functional calculation. We find that a continuous chain-like distribution of hydrogen…
Mahlen nach Zahlen: Die Bildung von Cadmiumborhydriden wird durch ein Screening mechanochemischer Synthesen mit unterschiedlichen Reaktanten in verschiedenen Verhältnissen studiert. In-situ-Beugungsanalysen bei variabler Temperatur liefern direkt Informationen über die Zusammensetzungen, Strukturen, Zersetzungswege un…
With recent development of nanotechnology, nanomaterials (NMs) have been developed with innovative function and expected to cause a paradigm shift in various industry such as cosmetics, medicine and food. NMs begin to establish firm position in Japan as base of various industrials, in fact, a part of them have been al…
Abstract Early Cretaceous glauconite from the Xiala section, southwestern Tibet, China, was investigated by petrographic microscopy and scanning electron microscopy (SEM), X-ray diffractometry (XRD), Fourier transform infrared (FTIR) spectroscopy, and electron probe microanalysis (EPMA). The investigations revealed th…
When two half-supercapacitors are of different temperatures and connected together, since the electrode potential is thermally dependent, a significant output voltage is generated. This thermally induced capacitive effect can be employed for harvesting and storing low-grade heat. In the current study, the effects of a…
An X-ray approach to analyzing ultradisperse systems is suggested. The approach is based on the simulation of diffraction patterns from an ensemble of nanoparticles with a given structure, size, and shape, including intensity calculations at each profile point. A program for calculations was developed. Its possibiliti…
Determining phase transitions has always been a great challenge in material science due to their important fundamental and technological aspects. Recently, iron-based perovskites (RFeO3), exhibiting phase transitions at high temperatures, have attracted much interest for their functional properties at room temperature…
The identity of a small-celled diatom Naviculadicta pseudofallacia Witkowski, Metzeltin et Lange-Bertalot, originally described from Bear Island, southernmost island of the Norwegian archipelago Svalbard, is reconsidered. Observations of marine samples from the Kerguelen archipelago (Southern Ocean, Indian Ocean secto…
For composites based on polystyrene, the styrene-butadiene copolymer, and polybutadiene filled with various kinds of zinc oxide powder, the enthalpy of mixing is calculated in the entire range of filler contents on the basis of calorimetric measurements with the use of the thermochemical cycle. It is shown that, when…
Inhibitive performance of 2-Mercapto-1-Methyl Imidazole on corrosion behavior of mild steel in 5% HCl solution was investigated by means of weight loss, electrochemical measurements, SEM and EDX. The increase in concentration and immersion time shows a positive effect on inhibition efficiency, while temperature has a…
Abstract New perovskite-type oxyfluoride, PbMnO2F was synthesized under 4–7 GPa at 1000 °C. As a result of X-ray and electron diffractions, the compound was determined to have tetragonal perovskite structure with a × a × 4c super structure where a and c are the lattice parameters of the perovskite subcell. The tetrago…
Vertically aligned carbon nanotubes are synthesized by Low Pressure Chemical Vapor Deposition (LPCVD) on Si substrate coated with Fe as a catalyst at a pressure of 20 Torr and at a growth temperature of 600 degrees C. The catalyst film is prepared by electro-chemical method which is very unique and a low cost method.…
Could nuclear power be rapidly expanded on a global scale? There are a number of practical limiting factors, including site availability and acceptability, nuclear waste disposal issues, and the risks of accidents and proliferation. But there are also a variety of resource limitations. One particular resource limitati…
Methods of X-ray diffraction, transmission and scanning electron microscopy, and electron diffraction have been used to study phase composition and structure of an almost stoichiometric alloy Ti50Ni25Cu25. The alloys of the quasi-binary section TiNi-TiCu to be studied, which exhibit in the initial ascast state thermoe…
Abstract Due to recent environmental issues, many research findings on non‐lead‐based materials have appeared. The author also reported the possibility of improvement of piezoelectric materials by microwave (MW) sintering. We checked the relationships between the domain size and piezoelectric constantd33in BaTiO3ceram…
This study was carried out to determine the percentage of gelatin yield (w/w) extracted from chicken feet (CFG), and to compare the physicochemical properties and sensory qualities of CFG with bovine commercial gelatins (CBG). CFG extraction was based on gelatin type B method through three alkaline treatments by soaki…
The adsorption of ethylene (C 2 H 4 ) on five clay minerals (sepiolite, two kaolinites and two bentonites) and on forms treated with 1 M HCl solution (SH, K1H, K2H, B1H and B2H) was investigated. Adsorption isotherms for ethylene on all clay minerals were obtained at 4 °C and 20 °C up to 37 kPa. X-Ray diffraction (XRD…
The aim of the present study was to test alginate gels of different compositions as a system for controlled release of manganese ions (Mn(2+)) for application in manganese-enhanced MRI (MEMRI), in order to circumvent the challenge of achieving optimal MRI resolution without resorting to high, potentially cytotoxic dos…
The phase transformation from the pyrochlore phase into the perovskite phase in ferroelectric films of lead zirconate titanate on silicon substrates due to annealing of samples has been investigated experimentally and theoretically. It has been proved that this transformation is a typical first-order phase transition,…