Results 31 to 40 of about 6,006 (137)

Room temperature Mössbauer characterization of ferrite with spinel structure [PDF]

Science of Sintering
Cobalt ferrite (CoFe2O4) nanoparticle were obtained by different synthesis methods: coprecipitation (CO), ultrasonically assisted coprecipitation (US-CO), coprecipitation followed by mechanochemical treatment (MC-CO), microemulsion (ME) and microwave ...
Lazarević Zorica Ž., Milutinović Aleksandra, Umićević Ana, Ivanovski Valentin N., Koteski Vasil, Anđelković Ljubica, Ćurčić Milica   +6 more
doaj   +1 more source

Metallurgical quality evaluation of the wind turbine main shaft 42CrMo4 steel: microscopic and Mössbauer studies

Nukleonika, 2017
In this paper, the results of the complex examination of the 42CrMo4 steel samples are presented. The samples were taken from the metallurgical forging prepared for the production of the wind turbine main shaft.
Siemiątkowski Zbigniew, Gzik-Szumiata Małgorzata, Szumiata Tadeusz, Rucki Mirosław, Martynowski Robert   +4 more
doaj   +1 more source

Síntesis y caracterización Mössbauer de magnetitas dopadas con Cu y Cr

Revista de Metalurgia, 2003
Se presenta una investigación Mössbauer detallada de magnetitas preparadas bajo diferentes condiciones hidrotermales y dopadas con Cu y Cr. Las muestras fueron caracterizadas utilizando la espectrometría Mössbauer a temperatura ambiente, espectroscopia ...
C. A. Barrero, A. L. Morales, J. Mazo-Zuloaga, F. Jaramillo, G. Pérez, D. M. Escobar, C. Arroyave, J. Tobón, P. M. Montoya, L. Osorio, R. E. Vandenberghe, J. M. Greneche   +11 more
doaj   +1 more source

The Structural and the Magnetic Properties of Aluminum Substituted Yttrium Iron Garnet [PDF]

Materials Research, 2018
In this paper, Y3AlxFe5-xO12 powders with x = 0.0, 0.2, 0.4, 0.6, 0.8, and 1.0 were prepared via solid state reaction method. X-ray diffraction, Vibrating Sample Magnetometry, and Mössbauer Spectroscopy were used to study their structural and magnetic ...
Qassem I. Mohaidat, Mahdi Lataifeh, Khozima Hamasha, Sami H. Mahmood, Ibrahim Bsoul, Mufeed Awawdeh   +5 more
doaj   +1 more source

Magnetic lipase B from Candida antarctica (CALB) biocatalyst for integrated valorization of tilapia by‐products and biodiesel biorefining

Biofuels, Bioproducts and Biorefining, EarlyView.
Abstract The immobilization of lipase B from Candida antarctica (CALB) on an amino‐epoxy functionalized magnetic support (Fe3O4‐PEI‐DGEBA) resulted in a highly stable and efficient biocatalyst for biofuel production from tilapia oil. The synthesized support was characterized using scanning electron microscopy, transmission electron microscopy, X‐ray ...
Rafael Leandro Fernandes Melo, Francisco Simão Neto, Bruno Caio Chaves Fernandes, Paulo Gonçalves de Sousa Junior, Patrick da Silva Sousa, Tiago Melo Freire, Raniere Dantas Valença, Frederico Ribeiro do Carmo, Marcos Reinaldo da Silva, Leonardo Farias Serafim, João Maria Soares, Pierre Basílio Almeida Fechine, José Cleiton Sousa dos Santos   +12 more
wiley   +1 more source

Characterization study of electric arc furnace dust phases

Materials Research, 2006
Electric arc furnace dust (EAFD) is a solid waste generated in the collection of particulate material during steelmaking process in electric arc furnace.
Janaína Gonçalves Maria da Silva Machado, Feliciane Andrade Brehm, Carlos Alberto Mendes Moraes, Carlos Alberto dos Santos, Antônio Cezar Faria Vilela   +4 more
doaj   +1 more source

T½ Tuning in a Synergistic BODIPY‐Tetrazole Fe(II) Spin‐Crossover‐Photoluminescence System via Co‐Ligand Variation

Chemistry – A European Journal, EarlyView.
We report a modular spin crossover‐photoluminescence (SCO‐PL) system: heteroleptic, mononuclear Fe(II) coordination compounds bearing equatorial BODIPY fluorophores that exhibit synergistic PL response upon spin state switching. Exchanging apical nitrile co‐ligands tunes electronic and structural properties, giving precise control over the SCO and PL ...
Martin Huber, Matthias Schöbinger, Berthold Stöger, Michael Reissner, Peter Weinberger   +4 more
wiley   +1 more source

Mössbauer Spectroscopy as a Valuable Analysis Technique in Biomedical Research

CHIMIA
Mössbauer spectroscopy is an effective technique used to examine the iron atom electronic environments in both biomolecular molecules and whole animal studies. Because of its sensitivity to nuclear hyperfine interactions, this technique yields incredibly
Jasim Hassen, Jack Silver
doaj   +1 more source

Cation Distribution in Natural Chromites from Oman

Sultan Qaboos University Journal for Science, 1996
Two specimens or natural chromite from the Oman ophiolite were studied using Mossbauer Spectroscopy (MS), X-ray Diffraction (XRD). and Scanning Electron Microscopy (SEM). The diffraction patterns obtained at room temperature showed that the two specimens
Z. Al-Alawi, A.M. Gismelseed, A.A. Yousif, M.A. Worthing, H.H. Sutherland, A.M. Rais, M.E. El-Zain, A.D. Al-Rawas   +7 more
doaj   +1 more source

The Role of Iron‐Hyponitrite Intermediates in Biology and Insights From Synthetic Model Complexes

Chemistry – A European Journal, EarlyView.
Despite the difference in active site architecture, NO reduction by different NOR enzymes is expected to be linked by a common intermediate: hyponitrite (N2O22−). However, experimentally, very little is known about the coordination chemistry of iron with hyponitrite and the expected Fe‐hyponitrite intermediates.
Michael O. Lengel, Nicolai Lehnert
wiley   +1 more source