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Articles, 15 registres trobats
Articles 15 registres trobats  1 - 10següent  anar al registre:
13 p, 857.3 KB Some successful approaches to quantitative mineral analysis as revealed by the 3rd reynolds cup contest / Omotoso, Olapido (Natural Resources Canada. CANMET Energy Technology Centre) ; McCarty, Douglas K. (Chevron ETC) ; Hillier, Stephen (Macaulay Institute) ; Kleeberg, Reinhard (Institute of Mineralogy. TU Bergakademie Freiberg)
Details of the quantitative techniques successfully applied to artificial rock mixtures distributed for the third Clay Minerals Society Reynolds Cup (RC) contest are presented. Participants each received three samples, two containing 17 minerals each and a third containing ten minerals. [...]
2006 - 10.1346/CCMN.2006.0540609
Clays and Clay Minerals, Vol. 54, Núm. 6 (2006) , p. 748-760  
18 p, 1.8 MB Rietveld refinement of disordered illite-smectite mixed-layer structures by a recursive algorithm. II : Powder-pattern refinement and quantitative phase analysis / Ufer, Kristian (BGR/LBEG) ; Kleeberg, Reinhard (Institute of Mineralogy. TU Bergakademie Freiberg) ; Bergmann, Jörg ; Dohrmann, Reiner (BGR/LBEG)
X-ray diffraction (XRD) of powdered materials is one of the most common methods used for structural characterization as well as for the quantification of mineral contents in mixtures. The application of the Rietveld method for that purpose requires structure models for each phase. [...]
2012 - 10.1346/CCMN.2012.0600508
Clays and Clay Minerals, Vol. 60, Núm. 5 (2012) , p. 535-552  
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  
9 p, 1.6 MB Variation of preferred orientation in oriented clay mounts as a result of sample preparation and composition / Dohrmann, R. (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, R. (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  
12 p, 244.5 KB Design and quality criteria for archetype analysis / Eisenack, Klaus (Humboldt-Universität zu Berlin (Germany)) ; Villamayor Tomás, Sergio (Universitat Autònoma de Barcelona. Institut de Ciència i Tecnologia Ambientals) ; Epstein, Graham (University of Waterloo. School of Environment, Resources and Sustainability (Canada)) ; Kimmich, Christian (Masaryk University. Department of Environmental Studies (Czechia)) ; Magliocca, Nicholas (University of Alabama. Department of Geography (USA)) ; Manuel Navarrete, David (Arizona State University. School of Sustainability (USA)) ; Oberlack, Christoph (University of Bern. Centre for Development and Environment (Switzerland )) ; Roggero, Matteo (Humboldt-Universität zu Berlin (Germany)) ; Sietz, Diana (Wageningen University (The Netherlands))
A key challenge in addressing the global degradation of natural resources and the environment is to effectively transfer successful strategies across heterogeneous contexts. Archetype analysis is a particularly salient approach in this regard that helps researchers to understand and compare patterns of (un)sustainability in heterogeneous cases. [...]
2019 - 10.5751/ES-10855-240306
Ecology and society, Vol. 24, Issue 3 (September 2019) , art. 6  
12 p, 1.0 MB Site-Specific mRNA Cleavage for Selective and Quantitative Profiling of Alternative Splicing with Label-Free Optical Biosensors / Huertas, César S (Institut Català de Nanociència i Nanotecnologia) ; Bonnal, Sophie (Universitat Pompeu Fabra) ; Soler Aznar, Maria (Institut Català de Nanociència i Nanotecnologia) ; Escuela, Alfonso M. (Universidad de Las Palmas de Gran Canaria) ; Valcárcel, Juan (Universitat Pompeu Fabra) ; Lechuga, Laura M. (Institut Català de Nanociència i Nanotecnologia)
Alternative splicing of mRNA precursors is a key process in gene regulation, contributing to the diversity of proteomes by the alternative selection of exonic sequences. Alterations in this mechanism are associated with most cancers, enhancing their proliferation and survival, and can be employed as cancer biomarkers. [...]
2019 - 10.1021/acs.analchem.9b03898
Analytical chemistry, Vol. 91, Issue 23 (December 2019) , p. 15138-15146  
40 p, 576.9 KB Exclusión social como factor de riesgo de violencia de género en la pareja / Damonti, Paola Serena (Universidad Pública de Navarra. Departamento de Trabajo Social)
Partiendo de una concepción estructural tanto de la violencia de género en la pareja como de la exclusión social, analizamos aquí el riesgo de experimentar esta violencia según diferentes intensidades y tipos de exclusión. [...]
Partint d'una concepció estructural tant de la violència de gènere en la parella com de l'exclusió social, analitzem aquí el risc d'experimentar aquesta violència segons diferents intensitats i tipus d'exclusió. [...]
Based on a structural concept of gender-based intimate partner violence and social exclusion, this paper analyses the risk of experiencing such violence according to different intensities and types of social exclusion. [...]

2019 - 10.5565/rev/papers.2570
Papers : revista de sociologia, Vol. 104 Núm. 3 (2019) , p. 485-523 (Artículos)  
20 p, 1008.1 KB Análisis cuantitativos aplicados a la poesía : la lírica indubitada sacra de Damián Cornejo y de León Marchante / Sánchez Mateos, Zoraida (Universidad de Valladolid)
Los análisis cuantitativos permiten delimitar y contrastar de manera objetiva las características estilísticas de corpus textuales. A través de este tipo de estudios, se intentarán definir rasgos morfonsintácticos y léxicos que permitan diferenciar los poemas sacros indubitados de Damián Cornejo y de León Marchante. [...]
The quantitative analysis allows to delimit and contrast in an objective way the stylistic characteristics of textual corpus. Through this type of studies, we have defined morphonsyntactic and lexical features which allow to differentiate the undoubted sacred poems of Damian Cornejo from Leon Marchante. [...]

2018 - 10.5565/rev/studiaaurea.305
Studia aurea : revista de literatura española y teoría literaria del Renacimiento y Siglo de Oro, Vol. 12 (2018) , p. 287-306 (Artículos)  
10 p, 739.3 KB Usos problemáticos de las TIC entre jóvenes en su vida personal y escolar / Rodríguez Gómez, David (Universitat Autònoma de Barcelona. Departament de Pedagogia Aplicada) ; Castro Ceacero, Diego (Universitat Autònoma de Barcelona. Departament de Pedagogia Aplicada) ; Meneses, Julio (Universitat Oberta de Catalunya)
Los estudios sobre el uso de las TIC en educación suelen analizar su contribución a los procesos formativos. Son escasas las investigaciones centradas en los usos problemáticos de las TIC que realizan los jóvenes en el contexto escolar y, la mayoría, lo abordan desde una perspectiva psicopatológica. [...]
Studies on ICT use in education usually focus on ICT's contribution to training processes. However, scarce research has concentrated on the problematic use of ICT among young people in the school context, and most of it approaches the problem from a psychopathological perspective. [...]

2018 - 10.3916/C56-2018-09
Comunicar, Vol. 26, Num. 56 (2018) , p. 91-100
2 documents
18 p, 3.7 MB A Sizer model for cell differentiation in Arabidopsis thaliana root growth / Pavelescu, Irina (Centre de Recerca en Agrigenòmica) ; Vilarrasa Blasi, Josep (Centre de Recerca en Agrigenòmica) ; Planas Riverola, Ainoa (Centre de Recerca en Agrigenòmica) ; González-García, Mary-Paz (Centre de Recerca en Agrigenòmica) ; Caño Delgado, Ana I. (Centre de Recerca en Agrigenòmica) ; Ibañes, Marta (Universitat de Barcelona. Institut de Recerca en Sistemes Complexos)
Plant roots grow due to cell division in the meristem and subsequent cell elongation and differentiation, a tightly coordinated process that ensures growth and adaptation to the changing environment. [...]
2018 - 10.15252/msb.20177687
Molecular systems biology, Vol. 14, issue 1 (Jan. 2018) , e7687  

Articles : 15 registres trobats   1 - 10següent  anar al registre:
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