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Artículos Encontrados 47 registros  inicioanterior15 - 24siguientefinal  ir al registro: La búsqueda tardó 0.00 segundos. 
15.
22 p, 2.8 MB Preferred orientations and anisotropy in shales : Callovo-oxfordian shale (France) and opalinus clay (Switzerland) / Wenk, H. R. (University of California. Department of Earth and Planetary Science) ; Voltolini, M. (University of California. Department of Earth and Planetary Science) ; Mazurek, M. (University of Bern. Institute of Geological Sciences) ; Van Loon, L. R. (Paul Scherrer Institut (Suïssa)) ; Vinsot, A. (Andra Laboratoire Souterrain de Meusc/Haute-Marne)
Anisotropy in clay-rich sedimentary rocks is receiving increasing attention. Seismic anisotropy is essential in the prospecting for petroleum deposits. Anisotropy of diffusion has become relevant for environmental contaminants, including nuclear waste. [...]
2008 - 10.1346/CCMN.2008.0560301
Clays and Clay Minerals, Vol. 56, Núm. 3 (2008) , p. 285-306  
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16.
12 p, 979.7 KB Preferred orientation of mineral grains in sample mounts for quantitative XRD measurements : How random are powder samples? / Kleeberg, Reinhard (Institute of Mineralogy. TU Bergakademie Freiberg) ; Monecke, Thomas (University of Ottawa. Department of Earth Sciences) ; Hillier, Stephen (Macaulay Institute)
The degree of preferred orientation of mineral grains in powder X-ray diffraction (XRD) samples prepared by standard techniques has been evaluated by means of a correction model implemented in the Rietveld program, BGMN. [...]
2008 - 10.1346/CCMN.2008.0560402
Clays and Clay Minerals, Vol. 56, Núm. 4 (2008) , p. 404-415  
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17.
9 p, 1.6 MB Variation of preferred orientation in oriented clay mounts as a result of sample preparation and composition / Dohrmann, Reiner (Landesamt für Bergbau, Energie und Geologie (LBEG)) ; Rüping, K. B. (University of Halle-Wittenberg. Institute of Agricultural and Nutritional Sciences) ; Kleber, M. (Oregon State University. Department of Crop and Soil Science) ; Ufer, K. (TU Bergakademie Freiberg. Institute of Mineralogy) ; Jahn, Reinhold (University of Halle-Wittenberg. Institute of Agricultural and Nutritional Sciences)
In X-ray diffraction (XRD) analysis, preparation of oriented clay specimens enhances their 00l reflections by arranging basal surfaces parallel to the specimen surface. In one-dimensional modeling of XRD intensities, degree of preferred orientation is one of the variable parameters and a user may choose different s* values for different minerals. [...]
2009 - 10.1346/CCMN.2009.0570602
Clays and Clay Minerals, Vol. 57, Núm. 6 (2009) , p. 686-694  
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18.
15 p, 2.3 MB Mineral preferred orientation and microstructure in the Posidonia Shale in relation to different degrees of thermal maturity / Kanitpanyacharoen, Waruntorn (University of California. Department of Earth and Planetary Science) ; Kets, Frans B. (University of Leeds. School of Earth and Environment) ; Wenk, Hans-Rudolf (University of California. Department of Earth and Planetary Science) ; Wirth, Richard (GeoForschungsZentrum)
The thermal maturity of samples of the Posidonia Shale collected from the Hils Syncline, northern Germany, varies significantly as a function of location indicating variations in local history. Synchrotron X-ray diffraction was used to document the composition and the preferred orientation of four samples of the Posidonia Shale with different degrees of maturity (0. [...]
2012 - 10.1346/CCMN.2012.0600308
Clays and Clay Minerals, Vol. 60, Núm. 3 (2012) , p. 315-329  
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19.
8 p, 1.2 MB Ab initio molecular dynamics study of Fe-containing smectites / Liu, Xiandong (Nanjing University. School of Earth Sciences and Engineering) ; Meijer, Evert Jan (University of Amsterdam. Van't Hoff Institute for Molecular Sciences and Amsterdam Center for Multiscale Modeling) ; Lu, Xiancai (Nanjing University. School of Earth Sciences and Engineering) ; Wang, Rucheng (Nanjing University. School of Earth Sciences and Engineering)
In order to identify the influences imposed by Fe substitution, density functional theory-based Car-Parrinello molecular dynamics simulations were employed to study both oxidized and reduced Febearing smectites. [...]
2010 - 10.1346/CCMN.2010.0580109
Clays and Clay Minerals, Vol. 58, Núm. 1 (2010) , p. 89-96  
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20.
14 p, 8.9 MB Fast in-band position-aided beam selection in millimeter-wave MIMO / Garcia, Gabriel E. (Chalmers University of Technology. Department of Electrical Engineering) ; Garcia, Nil (Chalmers University of Technology. Department of Electrical Engineering) ; Seco Granados, Gonzalo (Universitat Autònoma de Barcelona. Departament de Telecomunicació i Enginyeria de Sistemes) ; Karipidis, Eleftherios (Ericsson Research) ; Wymeersch, Henk (Chalmers University of Technology. Department of Electrical Engineering)
Millimeter-wave (mm-wave) and massive multiple-input-multiple-output technologies appear as key enablers in future emerging wireless communication systems. Propagation in mm-wave communications is well described by geometric channel models, where a clear relation between communication and positioning arises. [...]
2019 - 10.1109/ACCESS.2019.2944579
IEEE Access, Vol. 7 (2019) , p. 142325-142338  
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21.
12 p, 710.4 KB Born global : the influence of international orientation on export performance / Escandon-Barbosa, Diana (Pontificia Universidad Javeriana) ; Rialp Criado, Josep (Universitat Autònoma de Barcelona) ; Fuerst, Sascha (Eafit University) ; Rodriguez-Orejuela, Augusto (Universidad Del Valle) ; Castro-Aristizabal, Geovanny (Pontificia Universidad Javeriana)
New international enterprises that are referred to as Born Globals have become the subject of research due to the success of their global operations, despite their early internationalization and limited resources. [...]
2019 - 10.1016/j.heliyon.2019.e02688
Heliyon, Vol. 5 Núm. 11 (november 2019) , p. e02688  
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22.
27 p, 844.2 KB Contribución de la orientación emprendedora a la rentabilidad de las pymes : un análisis contingente considerando la función del entorno / Martins, Izaias (Universitat Autònoma de Barcelona. Departament d'Empresa) ; Uribe, Felipe (Universidad EAFIT. Departamento de Mercadeo) ; Mesa, Diana (Universitat Politècnica de Catalunya. Departament d'Organització d'Empreses)
En este artículo se investiga el efecto de la orientación emprendedora (OE) en el desempeño financiero de la pequeña y mediana empresa (pyme), así como una propuesta de un modelo de contingencias para explorar el efecto moderador de la hostilidad del entorno sobre la relación OE-desempeño financiero. [...]
This paper aims first to show the effect of the Entrepreneurial Orientation (EO) on SMEs financial performance, and second, to propose a contingency model which explores the moderating effects of environmental hostility of the relationship EO -financial performance. [...]
2012
Ecos de economía, Núm. 35 (juliol-desembre 2012) , p. 45-71  
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23.
31 p, 706.4 KB The Role of sexual orientation and gender in the appreciation of lesbian narratives / Soto Sanfiel, María Teresa (Universitat Autònoma de Barcelona. Departament de Comunicació Audiovisual i Publicitat) ; Palencia Villa, Rosa María (Universitat Autònoma de Barcelona. Departament de Comunicació Audiovisual i Publicitat) ; Ibiti, Adriana (Universitat Autònoma de Barcelona. Departament de Comunicació Audiovisual i Publicitat)
We explore the effect of manifest sexual orientation and gender on the appreciation of lesbian narratives using a mixed-methods approach. Appreciation is a psychological response to narratives that prompts a profound perception of meaning or a motivation to create reflections or thoughts among audiences. [...]
2014
InMedia, Núm. 5 (2014)  
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24.
27 p, 1.2 MB Towards the design of universal immunosurfaces for SPR-based assays : a review / Mauriz, Elba (Universidad de León) ; García Fernández, M. C. (Universidad de León) ; Lechuga, Laura M (Institut Català de Nanociència i Nanotecnologia)
Surface biofunctionalization, including chemical activation and attachment of the bioreceptor, is an essential step to provide reliable detection of biomolecular binding events monitored by Surface Plasmon Resonance (SPR), the most employed optical biosensor, and other biosensor techniques. [...]
2016 - 10.1016/j.trac.2016.02.006
TrAC - Trends in Analytical Chemistry, Vol. 79 (May 2016) , p. 191-198  
Registro completo - Creative Commons

Artículos : Encontrados 47 registros   inicioanterior15 - 24siguientefinal  ir al registro:
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