http://hdl.handle.net/2117/220 2013-05-23T07:17:16Z http://hdl.handle.net/2117/19365 Title: Apoyo institucional del ICE-UPC a las dinámicas de innovación docente: Proyecto RIMA Authors: Martínez Martínez, María del Rosario; Salán Ballesteros, Maria Núria; Adam, Araceli; Darnell, Isabel; Corral Manuel de Villena, Ignacio de; Gallego Fernández, María Isabel; Portet Cortés, Esperanza; Torra Bitlloch, Immaculada Abstract: En los últimos años, desde el Instituto de Ciencias de la Educación de la Universidad Politécnica de Cataluña (ICE - UPC), se ha incentiva do l a Innovación Docente mediante múltiples iniciativas. Desde 2007, con la creación del Proyecto RIMA (Investigación e Innovación en Metodologías de Aprendizaje - Recerca i Innovació en Metodologies d’Aprenentatge) y de su entorno virtual asociado (www.upc.ed u/rima), el apoyo a la innovación docente se completa con un proyecto coordinado, que facilita la confluencia de esfuerzos de grupos de profesorado con interés en este ámbito. En la presente comunicación y partiendo de los resultados y experiencias de los últimos años en adaptación e implantación de metodologías de innovación docente en la UPC, se realiza una reflexión sobre la acogida e incidencia de esta iniciativa en la adaptación a los nuevos planes de estudio del Espacio Europeo de E ducación Superior ( EEES), y en el planteamiento de nuevos objetivos institucionales referidos tanto al tema de la participación en innovación docente como a las nuevas metodologías y a la mejora de la calidad docente. 2013-05-21T17:25:49Z http://hdl.handle.net/2117/19117 Title: Some experiences related to innovation methodologies within the university classroom Authors: Amante García, Beatriz; Martínez Martínez, María del Rosario 2013-05-07T11:07:59Z http://hdl.handle.net/2117/19115 Title: Towards methodological improvement in the Spanish studies Authors: Amante García, Beatriz; Martínez Martínez, María del Rosario 2013-05-07T10:51:03Z http://hdl.handle.net/2117/19114 Title: A proposal to improve your evaluation skills Authors: Amante García, Beatriz; Martínez Martínez, María del Rosario 2013-05-07T10:19:24Z http://hdl.handle.net/2117/19113 Title: Biphasic calcium sulfate dihydrate/iron-modified alpha-tricalcium phosphate bone cement for spinal applications : in vitro study Authors: Vlad, María Daniela; Valle Mendoza, Luis Javier del; Poeata, I.; López López, José; Torres Cámara, Ricardo; Barraco Serra, Marc; Fernández Aguado, Enrique Abstract: In this study, the cytocompatibility of new ‘iron-modified/alpha-tricalcium phosphate (IM/α-TCP) and calcium sulfate dihydrate (CSD)’ bone cement (IM/α-TCP/CSD-BC) intended for spinal applications has been approached. The objective was to investigate by direct-contact osteoblast-like cell cultures (from 1 to 14 days) the in vitro cell adhesion, proliferation, morphology and cytoskeleton organization of MG-63 cells seeded onto the new cements. The results were as follows: (a) quantitative MTT-assay and scanning electron microscopy (SEM) showed that cell adhesion, proliferation and viability were not affected with time by the presence of iron in the cements; (b) double immunofluorescent labeling of F-actin and α-tubulin showed a dynamic interaction between the cell and its porous substrates sustaining the locomotion phenomenon on the cements’ surface, which favored the colonization, and confirming the biocompatibility of the experimental cements; (c) SEM-cell morphology and cytoskeleton observations also evidenced that MG-63 cells were able to adhere, to spread and to attain normal morphology on the new IM/α-TCP/CSD-BC which offered favorable substratum properties for osteoblast-like cells proliferation and differentiation in vitro. The results showed that these new iron-modified cement-like biomaterials have cytocompatible features of interest not only as possible spinal cancellous bone replacement biomaterial but also as bone tissue engineering scaffolds. Description: Premi del "National University Research Council" del Ministeri d'Educació i Recerca de Romania, a autors romanesos per l'impacte de la seva recerca. 2013-05-07T09:56:44Z http://hdl.handle.net/2117/19096 Title: Chitosan and chitosan ZnO-based complex nanoparticles: formation, characterization, and antibacterial activity Authors: Perelshtein, Ilana; Ruderman, Yelena; Perkas, Nina; Tzanov, Tzanko; Beddow, Jamie; Joyce, Eadaoin; Mason, Timothy J.; Blanes, María; Mollá, Korina; Patlolla, Anitha; Frenkel, Anatoly I.; Gedanken, Aharon 2013-05-03T13:19:06Z http://hdl.handle.net/2117/19042 Title: Retos de la formación práctica tutelada en los planes de estudio de las titulaciones de grado en óptica y optometria Authors: Guaus Guerrero, Ester 2013-04-30T08:12:47Z http://hdl.handle.net/2117/19027 Title: Journal of Structural Biology Authors: Zanuy Gomara, David; Kotla, Rohith; Nussinov, Ruth; Teesalu, Tambet; Sugahara, Kazuki N.; Alemán Llansó, Carlos; Haspel, Nurit Abstract: Neuropilin-1 (NRP-1) is a hub receptor that plays an essential role in angiogenesis and vascular perme- ability. It is over-expres sed in the new blood vessels grown by tumor cells and is a target for anti-tumor treatment s. Peptides that expose the consensus sequence R/K/ XX R/K at the C-terminus ( C-end rule or CendR peptides) bind to NRP-1 and are internalized into the cell. We used peptide phage display binding assays and molecular dynamics (MD) simulations to study the potential role of the central residues of CendR peptides in binding and activa tion of the NRP-1 receptor. The high stability of RPAR–receptor domain complex stems from the formation of a characteristic pattern of three hydrogen bonds between the peptide C-terminus and the residues in the NRP-1 loop III. Any changes in the peptide structure that fail to preserve this triad result in a less-stable complex. We performed a systematic study of R XX R mutants, where X = A/D/S/R/P, in order to test the effect of replacement of A or P on the binding capabil- ities. Our results, both experimental and computational, show that RRAR, RDAR, RPDR, RPRR and RPPR are capable of binding NRP-1. However, only RPPR and RPRR segments form an optimal organization around loop III with low potential energy. In other analogs, the absence of these stabilizing interactions always results in higher potential energy of the complexes. The binding of RPAR analogs does not guarantee receptor activation; only stable complexes that are properly stabilized via loop III appear able to trigger NRP-1 activati on 2013-04-29T08:13:25Z http://hdl.handle.net/2117/18873 Title: Ecologically friendly polymer-metal and polymer-metal oxide nanocomposites for complex water treatment Authors: Alonso González, Amanda; Bastos Arrieta, Julio; Davies, Gemma L.; Gun'ko, Yuri K.; Vigués, Núria; Muñoz Berbel, Xavier; Macanàs de Benito, Jorge; Mas i Gordi, Jordi; Muñoz Tapia, Maria; Muraviev, Dmitri N. 2013-04-18T14:49:41Z http://hdl.handle.net/2117/18872 Title: Bifunctional polymer-metal nanocomposite ion exchange materials Authors: Domènech Garcia, Berta; Bastos Arrieta, Julio; Alonso González, Amanda; Macanàs de Benito, Jorge; Muñoz Tapia, Maria; Muraviev, Dmitri N. 2013-04-18T14:23:49Z http://hdl.handle.net/2117/18862 Title: Multidisciplinary study of tutoring using virtual characters and second life Authors: Amante García, Beatriz; Campo Sud, David del; Martínez Martínez, María del Rosario Abstract: In this article we present the planning and methodology followed in order to apply virtual tutoring sessions in different subjects and universities. The Second Life environment, together with the Voki speaking avatars will be employed. It is a multidisciplinary study that includes personal and collective tutoring sessions, answering key questions through animated avatars, virtual labs, and posters exhibition for peer-evaluation. From a survey run among the students it is concluded that most of them are willing to learn and try this kind of tutoring sessions, but at the same time some feel skeptical about its utility 2013-04-18T10:23:24Z http://hdl.handle.net/2117/18852 Title: Analysis of the dynamic response of pump-turbine runners. Part I: Experiment Authors: Presas Batlló, Alexandre; Valero Ferrando, M.del Carmen; Huang, Xingxing; Egusquiza Estévez, Eduard; Farhat, Mohamed; Avellan, François Abstract: When in operation, pump-turbine runners have to withstand large pressure pulsations generated by the rotor-stator interaction. The analysis of the dynamic behavior of these structures is necessary to avoid damage. For this analysis a realistic model of the runner is necessary. When the runner is submerged in water and inside the casing, its dynamic response is greatly affected. The added mass effects of the surrounding fluid and the proximity of the head-cover and bottom-cover may reduce the natural frequencies. The frequency reduction produced by the added mass effects and the influence of the boundary conditions has to be known for a safe design of the runner. In this paper an experimental investigation on the dynamic response of a model runner is presented. A reduced scale model of a pump-turbine was tested outside and inside the casing with different boundary conditions. For the excitation of the runner at different frequencies piezoelectric patches were used. The response was measured with miniature accelerometers located in several positions inside the runner. From the measurements the natural frequencies and mode-shapes of the runner were calculated using EMA. The influence of the added mass and of the boundary conditions is presented and discussed. 2013-04-17T12:02:49Z http://hdl.handle.net/2117/18787 Title: PM21 Vibraciones Crepado Marzo 2011-Marzo 2013 Authors: Escaler Puigoriol, Francesc Xavier 2013-04-15T10:20:20Z http://hdl.handle.net/2117/18723 Title: Fundamentals of selective ion transport through multilayer polyelectrolyte membranes Authors: Cheng, Chao; Yaroshchuk, Andriy; Bruening, Merlin L. Abstract: Membranes composed of multilayer poly(4-styrenesul- fonate) (PSS)/protonated poly(allylamine) (PAH) fi lms on porous alumina supports exhibit high monovalent/divalent cation selectivities. Remarkably, the di ff usion dialysis K + /Mg 2+ selectivity is >350. However, in nano fi ltration this selectivity is only 16, suggesting some convective ion transport through fi lm imperfections. Under MgCl 2 concentration gradients across either (PSS/PAH) 4 - or (PSS/ PAH) 4 PSS-coated alumina, transmembrane potentials indicate Mg 2+ transference numbers approaching 0. The low Mg 2+ transference numbers with both polycation- and polyanion-terminated fi lms likely stem from exclusion of Mg 2+ due to its large size or hydration energy. However, these high anion/cation selectivities decrease as the solution ionic strength increases. In nano fi ltration, the high asymmetry of membrane permeabilities to Mg 2+ and Cl − creates transmembrane di ff usion potentials that lead to negative rejections (the ion concentration in the permeate is larger than in the feed) as low as − 200% for trace monovalent cations such as K + and Cs + . Moreover, rejection becomes more negative as the mobility of the trace cation increases. Knowledge of single-ion permeabilities is vital for predicting the performance of polyelectrolyte fi lms in the separation and puri fi cation of mixed salts. 2013-04-09T10:30:57Z http://hdl.handle.net/2117/18720 Title: Fuzzy model for risk assessment of persistent organic pollutants in aquatic ecosystems Authors: Seguí, Xavier; Pujolasus, Edgar; Betrò, S.; Agueda Costafreda, Alba; Casal Fàbrega, Joaquim; Ocampo-Duque, W.; Rudolph, I.; Barra, R.; Páez, M.; Barón, E.; Eljarrat, E.; Barceló, D.; Darbra Roman, Rosa Maria Abstract: We developed a model for evaluating the environmental risk of persistent organic pollutants (POPs) to aquatic organisms. The model is based on fuzzy theory and uses information provided by international experts through a questionnaire. It has been tested in two case studies for a particular type of POPs: brominated flame retardants (BFRs). The first case study is related to the EU-funded AQUATERRA project, with sampling campaigns carried out in two Ebro tributaries in Spain (the Cinca and Vero Rivers). The second one, named the BROMACUA project, assessed different aquatic ecosystems in Chile (San Vicente Bay) and Colombia (Santa Marta Marsh). In both projects, the BFRs under study were polybrominated diphenyl ethers (PBDEs) and hexabromocyclododecane (HBCD). However, the model can be extrapolated to other POPs and to different aquatic ecosystems to provide useful results for decision-makers. 2013-04-09T10:14:39Z