Results 51 to 60 of about 41,619 (168)

A critical review of porous adsorbents for air separation: From fundamental insights to rational adsorbent design

AIChE Journal, EarlyView.
Abstract Air separation via selective adsorption using porous adsorbents offers energy‐efficient alternatives to cryogenic distillation for producing high‐purity O2 and N2. Adsorbent efficacy depends on balancing selectivity, durability, and performance consistency across varying conditions. This comprehensive review critically discusses the design and
Tianqi Wang, Daisong Chen, Tianyi Zhang, Boyu Zhang, Ruiqiang Wang, Zhengdong Liu, Mei Hong, Youssef Belmabkhout, Qinfen Gu, Jin Shang   +9 more
wiley   +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

Double-spiral magnetic structure of the Fe/Cr multilayer revealed by nuclear resonance scattering

, 2017
We have studied the magnetization depth profiles in a [57Fe(dFe)/Cr(dCr)]x30 multilayer with ultrathin Fe layers and nominal thickness of the chromium spacers dCr 2.0 nm using nuclear resonance scattering of synchrotron radiation. The presence of a broad
Andreeva, M. A., Babanov, Y. A., Baulin, R. A., Chumakov, A. I., Devyaterikov, D. I., Milyaev, M. A., Ponomarev, D. A., Romashev, L. N., Rueffer, R., Smirnov, G. V., Ustinov, V. V.   +10 more
core   +1 more source

M\"ossbauer, nuclear inelastic scattering and density functional studies on the second metastable state of Na2[Fe(CN)5NO]$\cdot$2H2O

, 2012
The structure of the light-induced metastable state SII of Na2[Fe(CN)5NO]$\cdot$2H2O 14 was investigated by transmission M\"ossbauer spectroscopy (TMS) in the temperature range 15 between 85 and 135 K, nuclear inelastic scattering (NIS) at 98 K using ...
A. Chumakov, A. Schaefer, A. Schaefer, A. X. Trautwein, A.D. Becke, A.I. Chumakov, B. Delley, C. Janiak, C. Janiak, C. Peng, C. Peng, D. Schaniel, D. Schaniel, D. Schaniel, D. Schaniel, H. Paulsen, H. Paulsen, H. Paulsen, H. Winkler, H.-U. Güdel, J. A. Wolny, J. Schefer, J. Schefer, L. H. Böttger, M. Rüdlinger, M. Seto, M.D. Carducci, M.E. Chacón Villalba, N. Koop, P. Blaha, P. Coppens, R. Rüffer, Th. Dorn, Th. Woike, Th. Woike, U. Hauser, V. Rusanov, V. Rusanov, V. Rusanov, W. Sturhahn, Y. Morioka   +40 more
core   +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

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

Iron and molybdenum valences in double-perovskite (Sr,Nd)2FeMoO6: electron-doping effect

, 2003
Double perovskite, (Sr1-xNdx)2FeMoO6, was doped with electrons through partial substitution of divalent Sr by trivalent Nd (0 < x < 0.2). The Fe valence and the degree of B-site order were probed by 57Fe Mossbauer spectroscopy.
Chmaissem, Dass, Greneche, H. Yamauchi, Izumi, J. Lindén, Karppinen, Kobayashi, Lindén, Lindén, Lindén, M. Karppinen, Navarro, Navarro, T. Motohashi, T. Shimada, Yamamoto   +16 more
core   +1 more source

Óxidos de ferro das frações areia e silte de um Nitossolo desenvolvido de basalto [PDF]

Revista Brasileira de Ciência do Solo, 2003
Foi estudada a composição mineralógica dos óxidos de ferro das frações areia, silte e argila de cinco amostras coletadas de um perfil de um Nitossolo Vermelho desenvolvido de basalto toleítico, localizado próximo a Tupaciguara (18 º 35 ' 33 '' S; 48 º 42
B. A. Ferreira, J. D. Fabris, D. P. Santana, N. Curi   +3 more
doaj   +1 more source