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Listar por palabra clave "X ray diffraction"

Mostrando ítems 1-14 de 14

Electrospinning of biodegradable polylactide/hydroxyapatite nanofibers: Study on the morphology, crystallinity structure and thermal stability

Sonseca Olalla, Agueda; Peponi, Laura; Sahuquillo, Oscar; Kenny, J.M.; Giménez Torres, Enrique (Elsevier, 2012)

[EN] Aligned mats of poly(lactic acid) (PLA) nanofibers containing nanosized hydroxyapatite filler have been obtained via electrospinning onto a rotating mandrel. Their structure and morphology have been characterized as ...
Fabrication of ultrafine and nanocrystalline WC-Co mixtures by high energy milling

Bonache Bezares, Victoria; Salvador Moya, Mª Dolores; Busquets Mataix, David Jerónimo; Segovia-López, Francisco (MANEY PUBLISHING, 2009)

[EN] In this work ultrafine and nanocrystalline WC-Co mixtures were obtained by low energy milling in planetary ball mill. The effect of the processing conditions on the reduction and distribution of the grain sizes and ...
Finely tuned temperature-controlled cargo release using paraffin-capped mesoporous silica nanoparticles

Aznar Gimeno, Elena; Mondragón Martínez, Laura; Ros-Lis, José Vicente; Sancenón Galarza, Félix; Marcos Martínez, María Dolores; Martínez Mañez, Ramón; Soto Camino, Juan; Pérez Payá, Enrique; AMOROS DEL TORO, PEDRO (Wiley-VCH Verlag, 2011-09-27)

Trapped: Mesoporous silica nanoparticles were loaded with a fluorescent guest and functionalized with octadecyltrimethoxysilane. The alkyl chains interact with paraffins, which build a hydrophobic layer around the particle ...
Flexible CuInSe2 photovoltaic cells fabricated by non-vacuum techniques

Samantilleke, Anura Priyajith; Sahal, Mustapha; Ortiz Moya, Laura; Cerqueira, M.F.; Marí Soucase, Bernabé (Elsevier, 2011-08)

In this work, CuInSe 2 based flexible photovoltaic cells have been fabricated completely using non-vacuum low-cost techniques. Thin films were deposited on molybdenum thin foil substrates by electrodeposition using a ...
Gas Nitriding of Sintered Austenitic Stainless Steel

Baranowska, Jolanta; Amigó Borrás, Vicente (Trans Tech Publications, 2011-04)

The results concerning gas nitriding of sintered stainless steel are presented in the paper. The samples made of 316L steel were gas nitrided at temperatures between 400-550°C. The microstructure of the layer was investigated ...
High-pressure theoretical and experimental study of HgWO4

Lopez-Solano, J.; Rodriguez-Hernandez, Plácida; Muñoz, A.; Santamaria-Perez, David; Manjón Herrera, Francisco Javier; Ray, S.; Gomis Hilario, Oscar; Mollar García, Miguel Alfonso; Panchal, V.; Errandonea, Daniel (Taylor & Francis, 2011-03)

HgWO 4 at ambient pressure is characterized using a combination of ab initio calculations, X-ray diffraction and Raman scattering measurements. The effect of low pressure and temperature on the structural stability is ...
Microwave calorimetry using X-rays

Nicula, R.; Stir, M.; Wurm, A.; Catalá Civera, José Manuel; Ishizaki, K.; Vaucher, S.; Zhuravlev, E.; Schick, C. (Elsevier, 2011-11-10)

An alternative approach for microwave calorimetry is proposed which relies on the synchrotron radiation powder diffraction technique as well as on the Grüneisen formalism for the analysis of thermal expansion. Cobalt was ...
Mineralogical evolution of Portland cement blended with silica nanoparticles and its effect on mechanical strength

Tobón, J. I.; Paya Bernabeu, Jorge Juan; Borrachero Rosado, María Victoria; Restrepo Baena, Oscar Jaime (Elsevier, 2012-11)

Mineralogical analysis on pastes of Spanish Portland cement Type I, blended with nanosilica was carried out by conventional and high-resolution thermogravimetric analysis (TG-HRTG) and X-ray diffraction (XRD) in order to ...
Pozzolanic activity of a spent fluid catalytic cracking catalyst residue

Garcés, Pedro; Glasser, Fred P.; Brew, Daniel R.M.; Zornoza Gómez, Emilio Manuel; Paya Bernabeu, Jorge Juan (Thomas Telford (ICE Publishing), 2011)

The reaction between a spent fluid cracking catalyst (FC3R) residue and portlandite was monitored over 56 days using several material characterisation techniques. The results showed that the residue was heterogeneous and ...
Reactive synthesis of Ti-Al intermetallics during microwave heating in an E-field maximum

Vaucher, S.; Stir, M.; Ishizaki, K.; Catalá Civera, José Manuel; Nicula, R. (Elsevier, 2011-08-10)

The time-resolved X-ray diffraction synchrotron radiation technique was used in combination with E-field microwave heating to study in situ the kinetics of intermetallic phase formation in the Ti-Al system. The reaction ...
Sensitive and selective chromogenic sensing of carbon monoxide via reversible axial CO coordination in binuclear rhodium complexes

Moragues Pons, María Esperanza; Esteban Moreno, Julio; Ros-Lis, José Vicente; Martínez Mañez, Ramón; Marcos Martínez, María Dolores; Martínez, Manuel; Soto Camino, Juan; Sancenón Galarza, Félix (American Chemical Society, 2011-10)

The study of probes for CO sensing of a family of binuclear rhodium(II) compounds of general formula [Rh 2{(XC 6H 3)P(XC 6H 4)} n(O 2CR) 4-n]·L 2 containing one or two metalated phosphines (in a head-to-tail arrangement) ...
Studies on the conducting nanocomposite prepared by polymerization of 2-aminobenzoic acid with aniline from aqueous solutions in montmorillonite

Belmokhtar, A.; Benyoucef, A.; Zehhaf, A.; Yahiaoui, A.; Quijada Tomás, Cesar; Morallón, E. (Elsevier, 2012-12)

A simple and facile method was used to synthesize poly(o-aminobenzoic acid) (PoABA) and polyaniline (PANI) nanocomposites with sodium montmorillonite (M-Na) using in situ intercalative oxidative homo-, and co-polymerization ...
Synthesis and phase behaviour of a homologous seriesof polymethacrylate-based side-chain liquid crystal polymers

Cook, Andrew G.; Inkster, Rachel T.; Martinez-Felipe, Alfonso; Ribes Greus, María Desamparados; Hamley, Ian W.; Imrie, Corrie T. (Elsevier, 2012)

The homologous series of side chain liquid crystal polymers, the poly[¿-(4-methoxyazobenzene-4¿-oxy)alkyl methacrylate]s, has been prepared in which the length of the flexible alkyl spacer has been varied from 3 to 11 ...
ZnO-based spinels grown by electrodeposition

Tortosa Jorques, María Dolores; Manjón Herrera, Francisco Javier; Mollar García, Miguel Alfonso; Marí Soucase, Bernabé (Elsevier, 2012-09)

We report on the synthesis of thin films of ZnCo 2O 4 and ZnMn 2O 4 spinels, as well as pure Co 3O 4 and Mn 3O 4 spinels, by means of electrodeposition. Spinel thin films have been analyzed by energy dispersive spectroscopy, ...