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Artículos Encontrados 75 registros  inicioanterior35 - 44siguientefinal  ir al registro: La búsqueda tardó 0.01 segundos. 
35.
22 p, 1.9 MB Spatial and temporal evolution of hydrothermal alteration at Lavras do Sul, Brazil : Evidence from dioctahedral clay minerals / Bongiolo, Everton Marques (Universidade Federal do Rio Grande do Sul. Instituto de Geociências) ; Patrier-Mas, Patricia (Université de Poitiers) ; Mexias, André Samparo (Universidade Federal do Rio Grande do Sul. Instituto de Geociências) ; Beaufort, Daniel (Université de Poitiers) ; Laquintinie Formoso, Milton Luiz (Universidade Federal do Rio Grande do Sul. Instituto de Geociências)
The Au-Cu (±Pb, Zn, Ag) prospects of Lavras do Sul, southernmost Brazil, are hosted in Neoproterozoic granitic and volcanogenic rocks. Mineralization occurs in structurally controlled N40°W to E-W quartz veins; sericite (±chlorite) and sulfides are the main secondary minerals in associated wall rocks. [...]
2008 - 10.1346/CCMN.2008.0560207
Clays and Clay Minerals, Vol. 56, Núm. 2 (2008) , p. 222-243  
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36.
10 p, 676.8 KB Colloid diffusion in compacted bentonite:Microstructural constraints / Holmboe, Michael (Kungl. Tekniska högskolan (Estocolm (Suècia)) ; Wold, Susanna (Kungl. Tekniska högskolan (Estocolm (Suècia)) ; Jonsson, Mats (Kungl. Tekniska högskolan (Estocolm (Suècia))
In Sweden and in many other countries, a bentonite barrier will be used in the repository for spent nuclear fuel. In the event of canister failure, colloidal diffusion is a potential, but scarcely studied mechanism of radionuclide migration through the bentonite barrier. [...]
2010 - 10.1346/CCMN.2010.0580408
Clays and Clay Minerals, Vol. 58, Núm. 4 (2010) , p. 532-541  
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37.
9 p, 1.3 MB Clay minerals in saprolite overlying hydrothermally altered and unaltered rocks Vera epithermal gold deposit, Australia / Murphy, David M. K. (The University of Western Australia. School of Earth and Environment) ; Gilkes, Robert J. (The University of Western Australia. School of Earth and Environment)
Differentiating clay minerals that formed in a supergene environment during deep chemical weathering from those that formed during hydrothermal alteration at higher temperatures associated with a mineralizing event is important in the exploration for epithermal Au deposits. [...]
2010 - 10.1346/CCMN.2010.0580606
Clays and Clay Minerals, Vol. 58, Núm. 6 (2010) , p. 783-791  
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38.
30 p, 881.9 KB Carbon nanotube-based nanocomposite sensor tuned with a catechol as novel electrochemical recognition platform of uranyl ion in aqueous samples / Muñoz, José (Institut de Ciència de Materials de Barcelona) ; Montes Martínez, Raquel (Universitat Autònoma de Barcelona. Departament d'Enginyeria Química, Biològica i Ambiental) ; Bastos Arrieta, Julio (Universitat Politècnica de Catalunya. Departament d'Enginyeria Química) ; Guardingo Melián, Mireia (Institut Català de Nanociència i Nanotecnologia) ; Busqué Sánchez, Félix (Universitat Autònoma de Barcelona. Departament de Química) ; Ruiz-Molina, Daniel (Institut Català de Nanociència i Nanotecnologia) ; Palet i Ballús, Cristina (Universitat Autònoma de Barcelona. Departament de Química) ; Garcia-Orellana, Jordi (Universitat Autònoma de Barcelona. Institut de Ciència i Tecnologia Ambientals) ; Baeza Labat, Maria del Mar (Universitat Autònoma de Barcelona. Departament de Química)
This article reports a novel electrochemical recognition platform based on a nanocomposite carbon paste electrode containing carbon nanotubes modified with gold nanoparticles carrying a thiolated catechol for the fast amperometric determination of uranyl ion (UO ) in water. [...]
2018 - 10.1016/j.snb.2018.07.093
Sensors and actuators. B, Chemical, Vol. 273 (November 2018) , p. 1807-1815  
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39.
11 p, 1.8 MB Rapid and Digital Detection of Inflammatory Biomarkers Enabled by a Novel Portable Nanoplasmonic Imager / Belushkin, Alexander (Institute of BioEngineering. École Polytechnique Fédérale de Lausanne) ; Yesilköy, Filiz (Institute of BioEngineering. École Polytechnique Fédérale de Lausanne) ; González-López, Juanjo 1975- (Hospital Universitari Vall d'Hebron. Institut de Recerca) ; Ruiz-Rodriguez, Juan Carlos (Hospital Universitari Vall d'Hebron) ; Ferrer, Ricard (Hospital Universitari Vall d'Hebron) ; Fàbrega-Santamaria, Anna (Hospital Universitari Vall d'Hebron. Institut de Recerca) ; Altug, Hatice. (Institute of BioEngineering. École Polytechnique Fédérale de Lausanne) ; Universitat Autònoma de Barcelona
New point-of-care diagnostic devices are urgently needed for rapid and accurate diagnosis, particularly in the management of life-threatening infections and sepsis, where immediate treatment is key. Sepsis is a critical condition caused by systemic response to infection, with chances of survival drastically decreasing every hour. [...]
2020 - 10.1002/smll.201906108
Small, Vol. 16 Núm. 3 (january 2020) , p. 1906108  
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40.
19 p, 1.3 MB Objetos de oro y epicampaniforme en la Cova del Gegant : relaciones en la costa mediterránea de la Península Ibérica durante la Edad del Bronce / Daura, Joan (Universidad de Lisboa (UNIARQ). Centro de Arqueologia.) ; Sanz Borràs, Montserrat (Universidad Complutense de Madrid. Departamento de Paleontología) ; Soriano, Eni (Grupo de Investigación Arqueológica del Nordeste Peninsular-GRANEP) ; Pedro, Mireia (Universitat de Barcelona. Departament d'Història i Arqueologia) ; Rubio, Ángel (Universidad del País Vasco. Departamento de Física de Materiales) ; Oliva Poveda, Mònica (Associació Catalana de Bioarqueologia) ; Gibaja, Juan F. (Juan Francisco) (Consejo Superior de Investigaciones Científicas. Institución Milá y Fontanals) ; Queralt, Ignasi (Institut de Diagnosi Ambiental i Estudis de l'Aigua) ; Álvarez, Ramon (Universitat de Barcelona. Facultat de Geografia i Història.) ; López-Cachero, F. Javier (Universitat de Barcelona. Facultat de Geografia i Història)
En este trabajo se analiza el estrato XXV de la Cova del Gegant (Sitges, Barcelona), adscrito a la Edad del Bronce, y se destaca la problemática cronológica de este período. En este yacimiento encontramos decoraciones epicampaniformes del "Grupo del Nordeste", tradicionalmente atribuidas a un Bronce Antiguo, un osario colectivo datado por C14 en el Bronce Medio, ornamentos en ámbar/resina de amplia cronología y dos piezas áureas, muy escasas en el nordeste de la Península Ibérica, que vinculamos con el episodio sepulcral. [...]
This paper presents archaeological layer XXV from Cova del Gegant (Sitges, Barcelona), ascribed to Bronze Age, and focuses on this period's chronological issues. Cova del Gegant yielded Late Bell Beaker pottery featuring a decorative style akin to the "Northeastern Group" (generally ascribed to Early Bronze Age), human remains associated with a collective burial (radiocarbon dated to Middle Bronze Age), amber and/or resin ornaments, and two gold artifacts (very scarce in the NE of Iberian Peninsula). [...]
2017 - 10.3989/tp.2017.12188
Trabajos de prehistoria, Vol. 74 Núm. 1 (2017) , p. 149-167  
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41.
9 p, 524.5 KB Signal enhancement on gold nanoparticle-based lateral flow tests using cellulose nanofibers / Quesada-González, Daniel (Institut Català de Nanociència i Nanotecnologia) ; Stefani, Christina (Institut Català de Nanociència i Nanotecnologia) ; González Tovar, Israel (Universitat de Girona) ; De La Escosura-Muñiz, Alfredo (Institut Català de Nanociència i Nanotecnologia) ; Domingo Marimon, Neus (Institut Català de Nanociència i Nanotecnologia) ; Mutjé, Pere (Universitat de Girona) ; Merkoçi, Arben (Institut Català de Nanociència i Nanotecnologia)
Lateral flow paper-based biosensors merge as powerful tools in point-of-care diagnostics since they are cheap, portable, robust, selective, fast and easy to use. However, the sensitivity of this type of biosensors is not always as high as required, often not permitting a clear quantification. [...]
2019 - 10.1016/j.bios.2019.111407
Biosensors & bioelectronics, Vol. 141 (September 2019) , art. 111407  
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42.
23 p, 1.3 MB In Situ Plant Virus Nucleic Acid Isothermal Amplification Detection on Gold Nanoparticle-Modified Electrodes / Khater, Mohga (Institut Català de Nanociència i Nanotecnologia) ; De La Escosura-Muñiz, Alfredo (Institut Català de Nanociència i Nanotecnologia) ; Altet Sanahujes, Laura (Vetgenomics) ; Merkoçi, Arben (Institut Català de Nanociència i Nanotecnologia)
Solid-phase isothermal recombinase polymerase amplification (RPA) offers many benefits over the standard RPA in homogeneous phase in terms of sensitivity, portability, and versatility. However, RPA devices reported to date are limited by the need for heating sources to reach sensitive detection. [...]
2019 - 10.1021/acs.analchem.9b00340
Analytical chemistry, Vol. 91, Issue 7 (April 2019) , p. 4790-4796  
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43.
28 p, 2.7 MB Augusto y el control de los territorios pirenaicos / Olesti, Oriol (Universitat Autònoma de Barcelona)
La ocupación de las áreas pirenaicas en época de Octavio-Augusto, especialmente a partir de la derrota de los ceretanos en el año 39 a. C. , ha sido considerada como el punto de partida del proceso de romanización de estos territorios, frecuentemente percibidos como marginales. [...]
The occupation of the Pyrenean areas during the reign of Octavian-Augustus, especially after the defeat of the Ceretans in the year 39 BC, has been regarded as the starting point for the process of Romanization of these territories, often considered marginal. [...]
2017 - 10.5209/GERI.56143
Gerión. Revista de Historia Antigua, Vol. 35, núm. Especial (2017) , p. 163-190  
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44.
22 p, 1.0 MB Plasmonic assemblies of gold nanorods on nanoscale patterns of poly(ethylene glycol) : application in surface-enhanced Raman spectroscopy / Karabel, Sema (Erciyes University. Department of Materials Science and Engineering) ; Patarroyo, Javier (Institut Català de Nanociència i Nanotecnologia) ; Kiremitler, N. Burak (Erciyes University. Department of Materials Science and Engineering) ; Pekdemir, Sami (Erciyes University. Department of Materials Science and Engineering) ; Puntes, Víctor (Institut Català de Nanociència i Nanotecnologia) ; Onses, M. Serdar (Erciyes University. Department of Materials Science and Engineering)
Approaches are needed for the tailored assembly of plasmonic building blocks on the surface of substrates to synergistically enhance their properties. Here we demonstrate selective immobilization and assembly of gold nanorods (NRs) on substrates modified and patterned with end-grafted poly(ethylene glycol) (PEG) layers. [...]
2018 - 10.1016/j.jcis.2018.07.124
Journal of colloid and interface science, Vol. 532 (December 2018) , p. 449-455  
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Artículos : Encontrados 75 registros   inicioanterior35 - 44siguientefinal  ir al registro:
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