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Showing 1 to 20 of 32 for “"CaF2"”.
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Determination of the Feasibility of CaF2:Mn (3 MOLE-%) as a Sensitive Ultraviolet Radation Detector
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Der Einfluss von Speichel auf die Ausbildung einer CaF2-Schicht auf den Zahnschmelz nach Verwendung unterschiedlicher fluoridhaltiger Zahnpasten
… Einfluss von Speichel auf die Ausbildung einer CaF2-Schicht auf den Zahnschmelz, nach Verwendung unterschiedlicher fluoridhaltiger Zahnpasten zu untersuchen. Als Maß diente die Aufnahme von lose gebundenem Fluorid (KOH-lösliches Fluorid). <br>Für diese Untersuchung wurden aus 140 Rinderzähnen …
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Molecular Self-Assembly of Methyl and Methoxy Substituted Benzoic Acids on Calcite(10.4) and Non-Equilibrium Structures of C60 on CaF2(111)
… non- equilibrium structures of C60 on the CaF2 surface are explored by variation of the preparation pathway. By comparing kinetic Monte Carlo simulations (kMC) with AFM experiments, the responsible molecular process could be identified.<br /> In summary, this thesis provides new insights …
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Caracterização dosimétrica do fluoreto de Cálcio dopado com túlio produzido por Combustão
… das radiações destaca-se o fluoreto de cálcio (CaF2) que apresenta uma resposta termoluminescente sensível a baixas doses de radiação. Este trabalho tem por objetivo a síntese do CaF2 dopado com túlio através do método de combustão e sua caracterização para aplicações dosimétricas das radiações …
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FLORESCENCE AND unconversion IN CAF[2]:HO[3+]
… work is a report on laser excitation studies of CaF2:Ho3+ , The fluorescence and unconversion of the crystal were observed for the first time using a Quanta-Ray DCR-3 Nd:YAG laser at the second harmonic excitation wavelength, The spectra of CaF2 doped with Ho3+ concentration ranging from 0.01 % …
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Paramagnetic resonance of transition group ions in crystals with the fluorite structure
… paramagnetic resonance of Co2+ in cubic sites of CaF2 and in trigonal sites of CdF2 have been observed at a frequency of 9 GHz and at liquid helium temperature. The trigonal spectra have an axial symmetry about a (lll) direction with g11 = 2.25 +/- 0.05 and g1 = 4.45 +/- 0.10. The origin of this …
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A consecutive reaction model and kinetics of cr2o3 reduction from slag by carbon dissolved in molten iron
… elements, S or Se and adding FeO and CaF2 to the slag. The progress of the reactions was monitored by taking slag samples at predetermined time intervals, and analyzing them for the relevant species. The results showed that the reduction of cr2o3 from slag takes place primarily at the …
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A consecutive reaction model and kinetics of cr2o3 reduction from slag by carbon dissolved in molten iron
… elements, S or Se and adding FeO and CaF2 to the slag. The progress of the reactions was monitored by taking slag samples at predetermined time intervals, and analyzing them for the relevant species. The results showed that the reduction of cr2o3 from slag takes place primarily at the …
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Towards Early State Disease Detection in Microdevices: Fabrication and Testing of Micro Total Analysis Systems for Bioanalytical Applications
… capillary electrophoresis (CE) devices made of CaF2. New methods have been developed for micromachining enclosed capillaries in CaF2. CE analysis of fluorescently labeled amino acids was used to illustrate bioanalytical applications of these microdevices. Initial on-chip infrared spectroscopy …
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Reduction of Solid Uranium Dioxide in Calcium Salts
… in the composition of 55.73mol%CaCl2-12.37mol%CaF2-26.58mol%Ca-5.32mol%UO2 over 12 hours. The total reduction in the electrochemical test is seen at 850oC during 12 hours with a salt composition of 79mol%CaCl2-17mol%CaF2-4mol%CaO. These oxide reduction mechanisms are convenient ways to …
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Rasterkraftmikroskopie an Einkristallen von Lithium- und Kalziumfluorid nach Bestrahlung mit Schwerionen
… Modellsysteme wurden zu diesem Zweck LiF- und CaF2-Einkristalle mittels Rasterkraftmikroskopie (RKM) untersucht. Beide Materialien zeigen nach der Bestrahlung kleine Hügel (Höhe wenige nm, Radien ca. 10 nm). Da der endliche Krümmungsradius der Sensorspitze die Genauigkeit der RKM sehr …
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Evaluation of fluid transport processes in dental enamel. Methods to assess the relevance of enamel permeability in caries prevention and etching treatments.
… fluoride application was the deposition of CaF2-like globules. Replicas inspec-tion before and after both treatments at different times intervals and after specific addi-tional clinical interventions showed that such globule formed in vivo could be removed by professional toothbrushing, …
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Produção, caracterização e avaliação in vitro de filmes finos de vidro niobo-fosfato por deposição a laser pulsado
… this work, thin niobo-phosphate bioactive glass (CaF2-CaONb2O5-P2O5) films were deposited by pulsed laser deposition (PLD) on Ti substrates aiming to enhance its bioactivity and osseointegration. Samples were analyzed by SEM, EDS, XPS, XRD, XRF, AFM, profilometry, scratch test, focal contact and …
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Chemical pressures in crystalline solids
… en sus respectivos cristales (NaCl o NaF, CaO o CaF2 , BaSnO3 ). This doctoral thesis is the result of a theoretical and computational research aimed at establishing a connection between the solution of the Schrödinger electronic equation in crystalline systems and the chemical bond. The crystal …
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Synthesis of hybrid metalorganic/inorganic systems and doped halide thin films for photovoltaics
… systems made of lanthanide doped fluorides (CaF2, NaYF4, NaGdF4, KYF4 and YOF) have been synthetized using MOCVD and sol-gel methods and deeply studied for their potential integration in silicon solar cells. Together with the traditional silicon PV technology, a new class of PV materials, …
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Development of a Time of Flight - Energy spectrometer for applications in Heavy Ion - Elastic Recoil Detection thin film analysis
… recoils ejected from the surface layers of a CaF2 film on a Si substrate. A mass calibration procedure was devised for identification of light impurities in known sample structures, and the mass resolution, also a direct result of time resolution, was found to range between 0.8 u and 1.7 u in …
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Zero-direct-carbon-emission aluminum production by solid oxide membrane-based electrolysis process
… chosen for SOM electrolysis was a eutectic MgF2-CaF2 system containing optimized amounts of YF3, CaO and Al2O3. Laboratory scale SOM electrolysis employing the inert anode were performed at 1100 ~ 1200oC to demonstrate the feasibility of producing and collecting aluminum while producing pure …
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Investigating the use of Raman spectroscopy as a histopathological tool to identify metastatic brain tumours and their sites of origin
… spectra. It was also observed that specimens on CaF2 and Spectrosil quartz retained paraffin after dewaxing, whereas specimens on Low-E substrates did not. Through data examination, the 721 cm-1 and 782 cm-1 peaks were identified as being the most distinct peaks for discriminating between …
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