نتایج جستجو برای: metallic iron
تعداد نتایج: 179752 فیلتر نتایج به سال:
A 30 year old man was referred by the accident and emergency (A&E) department to the oral and maxillofacial surgery unit with small puncture lacerations on his left cheek and lower neck. The patient, a metal fitter, had been hammering on a piece of metal that shattered on impact. Local examination revealed two small lacerations (approximately 2 cm each) sited in the left cheek and left inferior...
In our study we combine both principles by reducing the dimensionality of organic materials. We show that we are able to form nanostructures with organic molecules on a surface by means of self-organization processes. To achieve this, we used the nanostructure induced on the Au(111)(22×√3) surface by room temperature deposition of iron (<1ML). Fe-islands are formed at the edges of the reconstru...
Ordinal excitations of three-magnon decay, modulation instability and four-magnon decay processes of magnetostatic surface waves propagating in a pure yttrium iron garnet film are investigated in accordance with the relationship between the magnetostatic wave frequency and the internal magnetic field. Onset of the modulation instability is realized as a result of tnodification of n~agnetostatic...
Since the realization in the 1930s that elevated fluoride concentrations in drinking water can have detrimental effects on human health, new methods have been progressively developed in order to reduce fluoride to acceptable levels. In the developing world the necessity for filtration media that are both low-cost and sourced from locally available materials has resulted in the widespread use of...
Contaminant co-precipitation with continuously generated and transformed iron corrosion products has received relatively little attention in comparison to other possible removal mechanisms (adsorption, oxidation, precipitation) in Fe/H2O systems at near neutral pH values. A primary reason for this is that the use of elemental iron (Fe0) in environmental remediation is based on the thermodynamic...
Ternary iron-boron-based bulk metallic glasses sBMGsd were explored exhibiting capability of thick amorphous casting at least 1 mm in rod diameter or 0.5 mm in plate thickness, excellent soft magnetic properties with saturation magnetization 1.56 T and coercivity smaller than 40 A/m, and electrical resistivity larger than 200 mV cm. The BMG alloys represented by the formulas MaFebBc are based o...
Water treatment with metallic iron (Fe) is still based on the premise that Fe is a reducing agent. An alternative concept stipulates that contaminants are removed by adsorption, co-precipitation and size-exclusion in a reactive filtration process. This article underlines the universal validity of the alternative concept. It is shown that admixing non-expansive material to Fe as a pre-requisite ...
Single crystals of {FeHo(6)}I(12)Ho were obtained during the reaction of HoI(3) with metallic holmium and iron in a sealed tantalum container. The crystal structure consists of isolated holmium clusters encapsulating a single Fe atom, {FeHo(6)} ( symmetry). The rare earth metal atoms are surrounded by 12 edge-capping and six terminal iodide ligands that either connect the clusters to each other...
A new detector for sub-millisecond EXAFS spectroscopy at the European Synchrotron Radiation Facility
A new FReLoN (Fast-Readout Low-Noise) high-frame-rate detector adopted for the fast continuous collection of X-ray absorption spectra is presented. The detector is installed on the energy-dispersive X-ray absorption beamline ID24 at the ESRF and is capable of full time-resolved EXAFS spectra collection with over 4 kHz repetition rate and 0.2 ms exposure time. An example of the in situ kinetic s...
METALLIC IRON IN LASER-IRRADIATED OLIVINE AND PYROXENE SAMPLES. E. Kurahashi, C. Yamanaka, K. Nakamura and S. Sasaki, Department of Earth and Planetary Science, The University of Tokyo, 73-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan, (e-mail: [email protected]), Department of Earth and Space Science, Osaka University, Toyonaka, Osaka 560-0043, Japan, Astromaterials Research & Explor...
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