نتایج جستجو برای: beo

تعداد نتایج: 285  

2012
Barbara E Ostrov Lisabeth V Scalzi

Purpose Little is known about the long-term status of pediatric rheumatology patients who transition to adult care. Increasing numbers of Med-Peds graduates have chosen to train in dual subspecialties such as rheumatology. These practitioners are able to provide continuity of care to such patients. A Med-Peds rheumatologist (BEO) has practiced at our medical center providing pediatric rheumatol...

Journal: :npj Materials degradation 2022

Abstract The corrosion behavior of TiZrHfBeCu(Ni) high-entropy bulk metallic glasses (HE-BMGs) has been investigated. HE-BMGs exhibited high resistance in 3.5 wt. % NaCl solution because accumulation ZrO 2 and TiO the passive film. Ni promoted increases , HfO contents a decrease BeO content, which improved HE-BMG behavior. Compared with Zr 41.2 Ti 13.8 10 Cu 12.5 Be 22.5 BMG, effect can signifi...

Journal: :Dental materials journal 1988
K Watanabe S Okawa O Miyakawa S Nakano N Shiokawa M Kobayashi

Thin oxide films formed on commercial metal/porcelain Ni-Cr alloy containing Be, were studied by using the electron probe microanalyzer (EPMA) with the glass lining technique and by the X-ray diffraction method with the Debye-Scherrer camera. Oxidation was restricted to form thin oxide films as follows; at 700•Ž for 5 minutes in air, at 1,000•Ž for 2 minutes in air, and at 1,000•Ž for 40 minute...

M. Mehrabi M. Modarres M. Zahedifar, S. Harooni

Beryllium  oxide  (BeO)  nanopowder  was  synthesized  using  sol-gel method  and  the  effects  of  changes of  chemical  reagents  were investigated.  Because  of  tissue  equivalence  and  other  outstanding thermoluminescence  (TL) properties of  the bulk material  in X and γ dosimetry, the applicability of this nanostructure in TL dosimetry was studied  following  irradiation to  the 137 C...

Journal: :Journal of physics. Condensed matter : an Institute of Physics journal 2010
A Kikas T Käämbre K Kooser I Kuusik V Kisand E Nõmmiste M Kirm E Feldbach V Ivanov V Pustovarov I Martinson

We carried out a combined study of UV-VUV luminescence and resonant x-ray emission from BeO single crystals with incident photon energies in the vicinity of the Be 1s absorption edge. The x-ray emission spectra show that at the Be 1s photoabsorption edge the lattice relaxation processes in the excitation site take place already on the timescale of the radiative decay of the core excitation. Com...

2009
P. Schmidt-Wellenburg

The gravitational spectrometer GRANIT will be set up at the Institut Laue Langevin. It will profit from the high ultracold neutron density produced by a dedicated source. A monochromator made of crystals from graphite intercalated with potassium will provide a neutron beam with 8.9 Å incident on the source. The source employs superthermal conversion of cold neutrons in superfluid helium, in a v...

2003
S. Cho A. R. Raffray M. A. Abdou

Only limited data are available on tritium release from irradiated Be. Few models have been suggested for tritium release from beryllium. Simple diffusion/desorption models have been proposed, but lack the capability of accounting for important phenomena such as burst release through interconnected porosity and the effect of the Be0 impurity layer. This paper describes the application of a new ...

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