Autor: González, R. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Dipolar Contributions to Magnetoelastic Energy of Crystal Grains with Interfaces
Autorzy:: Szumiata, T.
Żuberek, R.
Szymczak, H.
Gonzalez, J.
Powiązania:: https://bibliotekanauki.pl/articles/2013177.pdf
Data publikacji:: 2000-03
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 75.80.+q
68.90.+g
78.66.Jg
Opis:: The magnetic anisotropy and magnetostriction in nanocrystalline grains in non-magnetic or magnetic matrix (nanoparticles or nanocrystalline materials) differ from their bulk properties. The interactions between atoms at the interface play the important role in these magnetic properties. In this paper the magnetic dipolar contribution to magnetostriction energy has been calculated for spherical crystal grains (of bcc and fcc symmetry) with interface layer of atoms possessing different magnetic moment. Total magnetoelastic energy of the sphere-interface system is a sum of magnetoelastic energy of the sphere, energy of the interactions between the sphere and the interface and also the energy of the interface. It was shown that magnetoelastic energy depends on the sphere size and interface thickness.
Źródło:: Acta Physica Polonica A; 2000, 97, 3; 531-534
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Protection From Steam at High Pressures: Development of a Test Device and Protocol
Autorzy:: Sati, R.
Crown, E. M.
Ackerman, M.
Gonzalez, J.
Dale, D.
Powiązania:: https://bibliotekanauki.pl/articles/90402.pdf
Data publikacji:: 2008
Wydawca:: Centralny Instytut Ochrony Pracy
Tematy:: steam protection
high pressure steam
protective materials
Opis:: Extensive use of pressurized steam in the oil and gas sectors has led to incidents where workers were seriously injured. In this study a test device and procedure to measure heat transfer through fabrics during steam exposure were developed and evaluated. Several factors were considered while designing the test device to simulate work site conditions. Fabrics were exposed to steam at 2 distances (50 and 100 mm) and 2 pressures (207 and 69 kPa). Theoretical considerations included heat and mass transfer, and fabric structure and performance properties. The test device and procedure differentiated well among both fabric and exposure conditions. For all fabrics, maximum heat transfer was observed at highest steam pressure and shortest distance. Laminated and coated fabrics performed better than a fabric without such treatments.
Źródło:: International Journal of Occupational Safety and Ergonomics; 2008, 14, 1; 29-41
1080-3548
Pojawia się w:: International Journal of Occupational Safety and Ergonomics
Dostawca treści:: Biblioteka Nauki

Artykuł

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