bluuebunny/crossref_metadata_2025_split huggingface dataset:
Audiovisual Narrations Based on Intercultural Relationships in Education
Authors: Bautista-García-Vera Antonio 
Published: September 2009

In this article, we describe a work started in 2008 and carried out in two public schools. We analyze the possible contribution of narration (photographic and film languages) to mutual human knowledge and the understanding of the events that surround group knowledge. We think that this type of audiovisual narration is more appropriate than mere texts to relate the affective and rational in Primary school children, as they are a culturally diverse population and, consequently, not all of them are literate in the native language. We envision storytelling as the basis for using of technical resources to encourage not only inter- and intra-group exchanges with these children, but also to encourage mutual understanding among them. We conclude by pointing out how teaching situations mediated by the use of technological resources help the participants to make sense of things, ideas, relationships and life events that are dispersed, as well as to build interpersonal meanings. Finally, through these methods, the protagonists of the audiovisual narrations are able to use the dialogue and the negotiation of meaning as the best way to encourage more democratic, egalitarian and fair practices.
En este artículo describimos el trabajo iniciado en el año 2008 en dos colegios públicos. Planteamos analizar la posible contribución de la narración de historias con lenguajes de la fotografía y del cine al conocimiento mutuo de los humanos. Pensamos que este tipo de relatos audiovisuales es más adecuado que el textual para vincular lo afectivo y lo racional en el alumnado de educación infantil y primaria que es diverso culturalmente y, muy probablemente, no todos y todas están alfabetizados en la lengua autóctona. Con tem plamos el relato de historias como la base del uso de los medios técnicos para fomentar relaciones intra e intergrupos de dicho alumnado y, consecuentemente, para facilitar el entendimiento entre ellos. Concluimos señalando que las situaciones de enseñanza configuradas por el mencionado uso de los medios tecnológicos ayudan a que los protagonistas de los relatos audiovisuales den sentido a cosas, ideas, relaciones y acontecimientos de la vida que están dispersas; a que construyan significados intersubjetivos, y a que asuman el compromiso de usar el diálogo y la negociación de significados como la mejor forma de fomentar prácticas más democráticas, igualitarias y justas.
Student´s Perceptions of Blended Learning at University
Authors: Hinojo-Lucena Francisco Javier , Aznar-Díaz Inmaculada , Cáceres-Reche María Pilar 
Published: September 2009

This paper describes the main contributions by students from a Teaching Innovation Project (2005) at the University of Córdoba focused on a part-time attendance teaching methodology (blended learning) through a virtual space within the degree of Educational Psychology. The most relevant contributions to the project (later applied in the Faculty of Educational Sciences in the University of Granada, Spain) are also collected. The students’ thoughts on the strengths and weakness as the main receptors of teaching in the European Space are an important factor in the improvement of teaching restructuring, based on the training necessities of all the educational agents involved directly and indirectly in this moment of change (teachers, students, educational authorities, etc.).
Este trabajo describe las principales aportaciones presentadas por el alumnado, con motivo de la puesta en práctica de un proyecto de innovación docente (2005) en la Universidad de Córdoba, centrado en el desarrollo de una metodología docente semipresencial (blended learning) me diante un entorno virtual en la titulación de Psicopedagogía. También se recogen los resultados más significativos del mismo proyecto implementado posteriormente en la Facultad de Ciencias de la Educación de la Universidad de Granada. La reflexión acerca de las fortalezas y debilidades manifestadas por los destinatarios directos del proceso de convergencia europeo, como son los estudiantes, permitirá la mejora de la reestructuración de una enseñanza acorde con las necesidades formativas de todos los agentes educativos implicados directa o indirectamente en este momento de cambio (profesorado, alumnado, autoridades educativas, etc.).
PaleoTV, NeoTV and MetaTV in US Drama Series
Authors: Tous-Rovirosa Anna 
Published: September 2009

This paper analyses the paleoTV, neoTV and metaTV features in three US drama series belonging to drama series genres and adventure subgenres: adventures («Lost»), crime («CSI: Crime Scene Investigation») and politics («The West Wing»). The aim of the research is to study these TV series in relation to the three eras which divide the short history of TV up to today, to determine the features that define this media in serial fiction and its relation to its own diachronic moment. The methodology of this work is based on the concepts of several scholars and makes references to other US fiction series. It emphasizes the autoreferenciality and intertextuality as some of metaTV’s most important features.Este artículo analiza las características paleotelevisivas, neotelevisivas y metatelevisivas de las series de ficción estadounidenses contemporáneas pertenecientes al género dramático y a los subgéneros de aventuras («Perdidos»), policíaco («CSI: Las Vegas») y político («El ala oeste de la Casa Blanca»). El objeto de la investigación consiste en estudiar dichas series televisivas estadounidenses dramáticas en relación a las tres eras que dividen la breve historia de la televisión hasta la actualidad, con la finalidad de detectar las características definitorias del medio en la serialidad de ficción y su relación con su propia diacronía. La metodología parte de los conceptos teóricos trabajados por varios estudiosos. Se destacan la autorreferencialidad y la intertextualidad como algunas de las características metatelevisivas predominantes, y se analiza la transmisión ideológica en dichas series.
Television, Attitudes, and Drugs in Adolescents: Research on their Effects
Authors: Sevillano-García María Luisa , González-Flores María del Pilar , Rey-Yedra Luis 
Published: September 2009

Studies related to the use of addictive substances usually reflect the point of view of consumers. In this paper we present a qualitative analysis of the answers of non-users related to the impact of television on their attitudes and behaviour. This article is the result of extensive research carried out in the city of Xalapa, Veracruz, Mexico that aimed to describe the relationship between television and the identification and promotion of values that protect the city’s teenagers from drug use. The data obtained provide those in charge of television programming with suggestions from the teenagers to help them stay drug-free.
Los estudios relacionados con el uso de sustancias adictivas recaban, habitualmente, la opinión de los consumidores. En este trabajo presentamos un análisis cualitativo de las respuestas de los usuarios respecto de la incidencia de la televisión en su comportamiento y actitudes. Es fruto de una investigación realizada en la ciudad de Xalapa, Veracruz (México) que tuvo la finalidad de describir la relación que guarda la televisión con la identificación y promoción de los valores que protegen a los adolescentes de la localidad del uso de drogas. Los datos obtenidos ofrecen a los encargados de la programación televisiva las sugerencias emanadas de los propios adolescentes, obtenidas de forma científica para ayudarlos a mantenerse al margen de las drogas.
Televisual Teenager Phenomena. Adolescent Prototypes in TV Series in Spain
Authors: Guarinos-Galán Virginia 
Published: September 2009

This work is doubly justified: as a part of a bigger research project on types of so far marginalized characters in television drama serials; and as a contribution to the teenage invasion of the TV screen as a call to this kind of audience. The aim of this paper is to show prototypes of adolescents created in televised products broadcast today in Spain. The methodology is based on two factors: a quantitative one about serials and characters, and a qualitative analysis of drama serials and teen characters. The result confirms the existence of a powerful standardized appearance and attitude regarding the models proposed by American series over the Spanish ones. The conclusion discusses the generation of contradictory teenage prototypes.
Este trabajo se justifica doblemente: como parte de una investigación superior sobre análisis de tipos de personajes hasta el momento marginales en series de ficción televisivas y como contribución a la reflexión de la invasión del adolescente en la pantalla televisiva como reclamo en busca de un sector de audiencias. Su objetivo es mostrar los prototipos de adolescentes que se generan en los productos audiovisuales televisivos que se emiten en la actualidad en España. Para ello se ha diseñado una metodología basada en un doble movimiento: fase de análisis cuantitativo de series y personajes; y fase de análisis cualitativo y deconstructivo de los personajes adolescentes en su proceso identitario. El resultado confirma la existencia de una potente estandarización de actitudes y apariencias con respecto a los modelos propuestos por series americanas por encima de las españolas. La conclusión habla de la generación de prototipos adolescentes contradictorios.
Technisches Anwendungspotenzial elektrischer Felder zur Steuerung turbulenter vorgemischter Flammen
Authors: Altendorfner F. , Beyrau F. , Leipertz A. , Hammer T. , Most D. , Lins G. , Branston D. W. 
Published: September 2009

AbstractDie Nutzung elektrischer Felder für die Steuerung von technischen Verbrennungsvorgängen (EFCC, Electric Field Controlled Combustion) eröffnet einen interessanten Ansatzpunkt im Hinblick auf aktuelle Diskussionen um einen verringerten CO2‐Ausstoß und eine effizientere Brennstoffausnutzung. Es wurden Untersuchungen zur technischen Einsetzbarkeit der Flammensteuerung mittels elektrischer Felder für stationär betriebene Gasturbinen am Lehrstuhl für Technische Thermodynamik (LTT), Erlangen‐Nürnberg, in Zusammenarbeit mit der Siemens AG im Rahmen des Forschungsverbundes „Kraftwerke des 21. Jahrhunderts”︁ (KW21) unter Anwendung von konventioneller Abgasanalyse durchgeführt. Dabei konnte das Potenzial elektrischer Felder für die Ausweitung des Stabilitätsbereiches und die Senkung der Schadstoffemissionen unter gasturbinenrelevanten Bedingungen wie erhöhten Drücken, Austrittsgeschwindigkeiten und Lufttemperaturen sowie für drallstabilisierte Flammen erfolgreich demonstriert werden. Weiterhin wurde die Möglichkeit der kapazitiven Kopplung durch keramische Wände gezeigt.
Synthesis and Biological Evaluation of Chromium Bioorganometallics Based on the Antibiotic Platensimycin Lead Structure
Authors: Patra Malay , Gasser Gilles , Pinto Antonio , Merz Klaus , Ott Ingo , Bandow Julia E. , Metzler‐Nolte Nils 
Published: September 2009

AbstractThe recent discovery of the natural product platensimycin as a new antibiotic lead structure has triggered the synthesis of numerous organic derivatives for structure–activity relationship studies. Herein, we describe the synthesis, characterization and biological evaluation of the first organometallic antibiotic inspired by platensimycin. Two bioorganometallic compounds containing (η6‐pentamethylbenzene)Cr(CO)3 (2) and (η6‐benzene)Cr(CO)3 (3), linked by an amide bond to the aromatic part of platensimycin, were synthesized. Their antibiotic activities were tested against B. subtilis 168 (Gram positive) and E. coli W3110 (Gram negative) bacterial strains. Both compounds were found to be inactive against E. coli but derivative 2 inhibits B. subtilis growth at a moderate MIC value of 0.15 mM. To test the intrinsic toxicity of chromium, several chromium salts along with {η6‐(3‐pentamethylphenyl propionic acid)}Cr(CO)3 (5) and {η6‐(3‐phenyl propionic acid)}Cr(CO)3 (6) were tested against both bacterial strains. No activity was observed against E. coli for any of the compounds; B. subtilis growth was not inhibited by Cr(NO3)3 and only very weakly by 5, K2Cr2O7 and Na2CrO4 at MIC values of 0.5, 0.68 and 1.24 mM, respectively. Compounds 2, 3, 5 and 4 (the pure organic analogue of 2) show similar cytotoxicity against HeLa, HepG2 and HT‐29 mammalian cell lines. Furthermore, the cellular uptake and the intracellular distribution of compounds 2, 3 and Cr(NO3)3 in B. subtilis were studied using atomic absorption spectroscopy to gain insight in to the possible cellular targets. Compound 2 was found to be readily taken up and distributed almost equally among cytosol, cell debris and cell membrane in B. subtilis.
Azido, Cyanato, and Thiocyanato Coordination Induced Distortions in Pentacoordinated [CoIIA(bip)]2 (A = NCS–, N3–, or NCO–) Complexes
Authors: Sarkar Mrinal , Clérac Rodolphe , Mathonière Corine , Hearns Nigel G. R. , Bertolasi Valerio , Ray Debashis 
Published: September 2009

AbstractA new family of distorted pentacoordinate [Co2] complexes was prepared and structurally characterized. In [CoIIA(bip)]2·S (1–3) [A = NCS–, N3–, NCO–; S = dmf, MeOH, dcm; Hbip = 2,6‐bis(phenylmethyliminomethyl)‐4‐methylphenol], the nonbonded Co···Co separations are in the 3.243 to 3.254 Å range, and the pseudohalide‐coordinated CoII ions are asymmetrically doubly bridged by the phenolate oxygen atoms of the ligand. The complementary basal–apical (b–a) and apical–basal (a–b) coordination modes of the phenolate bridges of bip– offer one O and two N donors for metal‐ion coordination. In the three dinuclear complexes, the h.s. CoII ions are coupled antiferromagnetically to yield a singlet ground state. The solid‐state variable‐temperature magnetic susceptibility measurement data on the complexes were fitted to an isotropic Heisenberg dimer model that allowed estimation of the antiferromagnetic interactions for 1–3. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009)
An Efficient (2‐Aminoarenethiolato)copper(I) Complex for the Copper‐Catalysed Huisgen Reaction (CuAAC)
Authors: Fabbrizzi Pierangelo , Cicchi Stefano , Brandi Alberto , Sperotto Elena , van Koten Gerard 
Published: September 2009

AbstractA (2‐aminoarenethiolato)copper(I) complex has been used as an efficient catalyst (1 mol‐%) for the copper‐catalysedHuisgen reaction (CuAAC) of azides and terminal alkynes in an organic solvent. The reaction was also extremely effective in CH2Cl2 allowing the complete decoration of dendrimeric scaffolds. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009)
A New Synthesis of Sulfur‐, Nitrogen‐ and Oxygen‐Containing Eight‐Membered Ring Lactams
Authors: Pflantz Rebekka , Sluiter Jonas , Krička Mario , Saak Wolfgang , Hoenke Christoph , Christoffers Jens 
Published: September 2009

AbstractBi(NO3)3‐catalyzed ring expansion of five‐membered ring 1,4‐diketones in the presence of primary amines leads to eight‐membered ring lactams. When applied to starting materials with a tetrahydrothiophene or pyrrolidine moiety, tetrahydro‐2H‐1,4‐thiazocin‐3‐ones and hexahydro‐1,4‐diazocin‐2‐ones are obtained as representatives of these very rare heterocyclic systems. In the case of tetrahydrofuran derivatives, other reaction conditions are required and yields of tetrahydro‐2H‐1,4‐oxazocin‐3‐ones are very low.(© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009)
Enhanced Activity and Stereoselectivity of Polystyrene‐Supported Proline‐Based Organic Catalysts for Direct Asymmetric Aldol Reaction in Water
Authors: Gruttadauria Michelangelo , Salvo Anna Maria Pia , Giacalone Francesco , Agrigento Paola , Noto Renato 
Published: September 2009

AbstractSeveral polystyrene‐supported proline dipeptides and a prolinamide derivative were prepared by thiol–ene coupling. These materials were used as catalysts for the direct asymmetric aldol reaction in water, and results compared with unsupported catalysts in water. Such an approach gave more active or stereoselective catalysts compared to the unsupported compounds, showing that our immobilization procedure may be useful to develop catalytic materials with enhanced performance. Moreover, these catalysts can be recovered and reused for at least nine times without loss of activity or can be easily regenerated when their activity has decreased. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009)
Synthesis and Optical and Electronic Properties of Thiophene Derivatives
Authors: Jimenez Raphael P. , Parvez Masood , Sutherland Todd C. , Viccars Joel 
Published: September 2009

AbstractUsing the Hinsberg synthesis of thiophenes, a versatile method to prepare fully derivatized, π‐extended thiophenes is reported. Functionalized thiophenes were divergently synthesized to create three classes of compounds – electron‐deficient, extended conjugation and electron‐rich – to assess substituent effects on optical and electrochemical properties. Properties were assessed by solution absorption spectroscopy, solution‐ and solid‐state fluorescence spectroscopy, cyclic voltammetry and density functional theory calculations. Tetracyano derivatives, prepared through Knoevenagel condensations of malononitrile with thiophene‐2,5‐dicarbaldehydes, were used as electron‐poor analogs. These derivatives showed quasireversible reduction reactions and very low‐lying calculated LUMO energies (–0.55 V reduction potentials vs. Fc/Fc+). The effect of extending π conjugation on the optical and electrochemical properties was investigated by the installation of bis(2‐thienylacryonitrile) groups onto three thiophene cores. The extended conjugation led to compounds that demonstrated both solution‐ and solid‐state fluorescence and moderate, irreversible reduction potentials (–1.2 V versus Fc/Fc+). The Lewis‐acid‐catalyzed coupling of four indoles to thiophene‐2,5‐dicarbaldehydes was studied to assess the effects of both electron‐donating substituents and a quinoidal thiophene. The tetraindolic thiophenes possessed low HOMO–LUMO energy gaps of 1.91 eV, high‐lying HOMO energy levels and tunable LUMO energy levels, attributed to the thiophene quinoidal ground‐state structure. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009)
Platinum‐Catalyzed Multisubstituted Benzo[b]selenophene Synthesis
Authors: Sato Takuma , Nakamura Itaru , Terada Masahiro 
Published: September 2009

AbstractAlkyl ortho‐alkynylphenyl selenides 1 were efficiently converted into 2,3‐disubstituted benzo[b]selenophenes 2 in the presence of a catalytic amount of PtCl2. The reactions were shown to proceed via carboselenation, specifically the addition of a C–Se bond to the alkynes. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009)
Merging of E2 and E1cb Reaction Mechanisms: A Combined Theoretical and Experimental Study
Authors: Mosconi Edoardo , De Angelis Filippo , Belpassi Leonardo , Tarantelli Francesco , Alunni Sergio 
Published: September 2009

AbstractBy combining the results of kinetic measurements with DFT calculations we provide a clear‐cut evidence of the merging between the E2 and E1cb reaction mechanisms for a large series of leaving groups. Our results solve a long‐debated issue in chemical reactivity with profound implications both from a fundamental and biological point of view, thus paving the way to further investigations with different substrates.(© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009)
Nucleation capacity and presence of centrioles define a distinct category of centrosome abnormalities that induces multipolar mitoses in cancer cells
Authors: Difilippantonio Michael J. , Ghadimi B. Michael , Howard Tamara , Camps Jordi , Nguyen Quang Tri , Ferris Douglas K. , Sackett Dan L. , Ried Thomas 
Published: September 2009

AbstractAnalysis of centrosome number and structure has become one means of assessing the potential for aberrant chromosome segregation and aneuploidy in tumor cells. Centrosome amplification directly causes multipolar catastrophic mitoses in mouse embryonic fibroblasts (MEFs) deficient for the tumor suppressor genes Brca1 or Trp53. We observed supernumerary centrosomes in cell lines established from aneuploid, but not from diploid, colorectal carcinomas; however, multipolar mitoses were never observed. This discrepancy prompted us to thoroughly characterize the centrosome abnormalities in these and other cancer cell lines with respect to both structure and function. The most striking result was that supernumerary centrosomes in aneuploid colorectal cancer cell lines were unable to nucleate microtubules, despite the presence of γ‐tubulin, pericentrin, PLK1, and AURKA. Analysis by scanning electron microscopy revealed that these supernumerary structures are devoid of centrioles, a result significantly different from observations in aneuploid pancreatic cancer cell lines and in Trp53 or Brca1 deficient MEFs. Thus, multipolar mitoses are dependent upon the ability of extra γ‐tubulin containing structures to nucleate microtubules, and this correlated with the presence of centrioles. The assessment of centrosome function with respect to chromosome segregation must therefore take into consideration the presence of centrioles and the capacity to nucleate microtubules. The patterns and mechanisms of chromosomal aberrations in hematologic malignancies and solid tumors are fundamentally different. The former is characterized by specific chromosome translocations, whose consequence is the activation of oncogenes. Most carcinomas, however, reveal variations in the nuclear DNA content. The observed genomic imbalances and gross variations in chromosome number can result from unequal chromosome segregation during mitotic cell division. It is therefore fundamental to elucidate mechanisms involved in distribution of the genome to daughter cells. Prior to cell division, the centrosome organizes microtubules and the mitotic spindle. Deciphering the consequences of alterations in centrosome number, structure, and function is an important step towards understanding how a diploid genome is maintained. Although extra centrosomes have now been observed in carcinomas and were correlated with aneuploidy, a careful functional investigation of these structures and their role in generating chromosome imbalances may lead to the identification of distinct mechanistic pathways of genomic instability. Understanding these pathways will also be important in determining whether they are potential molecular targets of therapeutic intervention. Environ. Mol. Mutagen., 2009. © 2009 Wiley‐Liss, Inc.
Mother–child and father–child mutuality in two contexts: consequences for young children's peer relationships
Authors: Lindsey Eric W. , Cremeens Penny R. , Caldera Yvonne M. 
Published: September 2009

AbstractThis study examines the role that context plays in links between relative balance, or mutuality in parent–child interaction and children's social competence. Sixty‐three toddlers and their parents were observed in a laboratory play session and caregiving activity (i.e. eating snack). Mutuality was operationalised as the relative balance in (a) partners' compliance to initiations, and (b) partners' expression of positive emotion. Caregivers rated children's social competence with peers, and children's prosocial and aggressive behaviour with peers was observed in their childcare arrangement. Contextual differences were observed in the manifestation of parent–child mutuality, with both mother–child and father–child dyads displaying higher mutual compliance scores in the play context than in the caregiving context. Father–child dyads also displayed higher levels of shared positive emotion during play than during the caregiving context. There were no differences in a way that parent–child mutuality during play and caregiving was associated with children's social competence with peers. Overall, the results suggest that parent–child mutuality is a quality of parent–child interaction that has consistent links to children's peer competence regardless of the context in which it occurs. Copyright © 2009 John Wiley & Sons, Ltd.