bluuebunny/crossref_metadata_2025_split huggingface dataset:
Twenty Years After Of Revelation and Revolution: An Interview With Jean Comaroff
Authors: Comaroff Jean , Morier-Genoud Eric 
Published: September 2011

AbstractJean Comaroff and John Comaroff's acclaimed Of Revelation and Revolution (Vol. I) has reached its 20th anniversary. SSM editor Eric Morier-Genoud takes this as an opportunity to conduct an interview with Jean Comaroff, in which they discuss Jean's intellectual trajectory and her views of the present. The interview elicits Jean Comaroff's reflections on the origins and heritage of Revelation and Revolution, and it discusses her and her husband's recent book about the privatisation of identities and religion.
Introducción: Psicología Social y Psicología Positiva
Authors: Salanova Marisa , López-Zafra Esther 
Published: September 2011

La Psicología Positiva surge como una perspectiva científica complementaria a la psicología tradicional, y supone un nuevo modelo centrado en las fortalezas. Implica una nueva forma de analizar los procesos básicos frente a los traumas, trastornos y patologías (o psicología “negativa”). El estudio de las emociones placenteras, el desarrollo de las capacidades y la búsqueda de la felicidad se han convertido en aspectos centrales de la Psicología. El número especial sobre Psicología Positiva de la revista American Psychologist, que Martin Seligman y Mihaly Czikszentmihalyi editaron en 2000, promovió un avance en la investigación científica bajo este paradigma en todos los ámbitos de la Psicología y en la Psicología Social en particular. Los científicos españoles, al igual que los científicos del resto del mundo, han contribuido fuertemente al conocimiento y desarrollo de la Psicología Positiva con gran empuje y amplitud de investigación. Con esta sección monográfica pretendemos analizar el estado de la cuestión en España con investigaciones realizadas en el ámbito de la Psicología Social. En concreto, se presenta una reflexión sobre el análisis psicosocial de la Psicología Positiva, trabajos relativos al bienestar subjetivo, psicológico y social junto a su influencia en las relaciones familiares, la inteligencia emocional y la experiencia de “flow” como experiencia positiva en el trabajo.
Inteligencia Emocional Percibida y estrategias de afrontamiento al estrés en profesores de enseñanza primaria: propuesta de un modelo explicativo con ecuaciones estructurales (SEM)
Authors: Augusto-Landa José M. , López-Zafra Esther , Pulido-Martos Manuel 
Published: September 2011

En este estudio se examinó el papel de los componentes de la Inteligencia Emocional Percibida (IEP: atención, claridad y regulación) como posibles predictores de las dimensiones de afrontamiento, en una muestra de 251 profesores de educación primaria (89 hombres y 162 mujeres) con edades comprendidas entre los 22 y 60 años (M= 39.02; SD= 11.25). Los participantes completaron un cuestionario en el que se medía la IEP, las estrategias de afrontamiento junto con los datos socio-demográficos. Proponemos un modelo mediante ecuaciones estructurales que, en su conjunto, da cuenta de un 39% de la varianza de afrontamiento de las emociones y de un 14% de afrontamiento conductual del problema. Esto indica que los sujetos con alta claridad y reparación emocional utilizan estrategias de afrontamiento conductual del problema, cognitivo del problema o centrado en las emociones. Estos resultados apoyan el postulado propuesto por Epstein (1998) según el cual los sujetos con alta IE realizarían un afrontamiento activo de las situaciones estresantes. Las implicaciones y limitaciones del estudio son explicadas en el presente artículo.
A Global Multimoment Constrained Finite-Volume Scheme for Advection Transport on the Hexagonal Geodesic Grid
Authors: Chen Chungang , Bin Juzhong , Xiao Feng 
Published: September 2011

Abstract
A third-order numerical model is developed for global advection transport computation. The multimoment constrained finite-volume scheme has been implemented to the hexagonal geodesic grid for spherical geometry. Two kinds of moments (i.e., point value and volume-integrated average) are used as the constraint conditions to derive the time evolution equations to update the computational variables, which are the values defined at the specified points over each mesh element in the present model. The numerical model has rigorous numerical conservation and third-order accuracy. One of the major merits of the present method is that it does not explicitly involve numerical quadrature, which leads to great convenience in accurately computing curved geometry and source terms. The present paper provides an accurate and practical formulation for advection calculation in the hexagonal-type geodesic grid.
Concise Synthesis of Deformylflustrabromine, a Marine Indole Alkaloid, through a 2-Propynyl Dicobalt Hexacarbonyl Complex
Authors: Isaji Hisaaki , Nakazaki Atsuo , Isobe Minoru , Nishikawa Toshio 
Published: September 2011

Abstract
Deformylflustrabromine, a marine indole alkaloid, was synthesized from 6-bromotryptamine, a plausible biosynthetic precursor, without protection of the amino group by a two-step reverse prenylation involving the Nicholas reaction and reductive decomplexation of the resulting acetylene dicobalt hexacarbonyl complex.
Superuniform Molecular Nanogate Fabrication on Graphene Sheets of Single Wall Carbon Nanohorns for Selective Molecular Separation of CO2 and CH4
Authors: Ohba Tomonori , Kanoh Hirofumi , Kaneko Katsumi 
Published: September 2011

Abstract
Superuniform nanosized gates (nanogates; 0.41 ± 0.02 nm in size) were donated on graphene sheets of single wall carbon nanohorn (SWCNH) particles by controlled oxidation. Super-uniform nanogate donation confers high molecular selectivity and large adsorption capacity upon SWCNH. The molecular selectivity of CO2 over CH4 attains 17 below 0.01 MPa by the nanogate separation.
Nanofluidic behavior on potassium chloride solution in zeolite Y
Authors: Qiao Yu , Chen Xi , Han Aijie 
Published: September 2011

ABSTRACTNanofluidic behavior has been an active area of research for the past decade. In addition to modifying nanopore size and surface properties, another important way to adjust system performance is to control the liquid composition. In the current study, we investigate the influence of electrolyte concentration on the infiltration behavior, as well as its dependence on temperature. A hydrophilic zeolite Y can be soaked in pure water, while with the addition of an electrolyte it can’t be soaked spontaneously. It is noticed that the effective solid–liquid interfacial tension in nanopores is highly sensitive to the electrolyte concentration, which may be related to the unique confinement environment in nanoporous material. As a result, with the electrolyte concentration varying, the effective interfacial tension changes rapidly. This phenomenon can be attributed to the amplification effect of nanopore surfaces on the solid–liquid interaction. It provides a scientific basis for developing smart liquids for various temperature and pressure ranges.
Development of a Sensitive Bead-Based Assay for Enhanced Monoclonal Antibody Detection
Authors: Ruidíaz Manuel E. , Mendez Natalie , Sanchez Ana B. , Messmer Bradley T. , Kummel Andrew C. 
Published: September 2011

ABSTRACTMonoclonal antibodies are increasingly used in the treatment of cancer due to their enhanced targeting and immune system stimulation properties. Dosage guidelines typically do not account for personal cancer load or metabolism, thereby possibly affecting treatment outcome or causing unwanted side effects. The requirement for an assay that can quickly and precisely measure the concentration of the monoclonal antibody in a serum sample of a patient during therapy is unmet. A bead-based assay with peptide antigen mimetics has been developed to rapidly determine the concentration of antibody drug present in serum specimens with high sensitivity. Alemtuzumab (anti-CD52) and rituximab (anti-CD20) antigen mimetic peptides, as discovered by phage display, were synthesized on 10 um TentaGel resin beads using conventional solid phase peptide synthesis techniques. The beads were modified to allow for multiplexing and microfluidic handling via fluorescent labeling and magnetic functionalization. The antigen-displaying fluoromagnetic particles were incubated with spiked serum samples which allowed free antibody to be captured. Primary antibody detection was performed on alemtuzumab while rituximab detection was used to compensate for non-specific serum binding to the beads. After washing, the beads were incubated with a fluorescently tagged secondary label for detection by flow cytometry. (Results) A fast, low cost, specific assay has been developed with several key techniques which allows detection at low concentration (0.1ug/ml) of spiked samples. Primary to achieving this detection limit was the implementation of a compensation scheme where two antigen mimetic peptides behave linearly (R2=0.996) which enables the calculation of the zero response of the antigen mimetic peptide of interest (alemtuzumab antigen mimetic) while measuring the zero response of the compensatory antigen mimetic peptide (rituximab antigen mimetic) during primary assay measurement. This reduces fluorescence response variation due to variations present due to sample preparation, storage and different patients because of the equivalent interactions these effects have on the compensatory beads. The developed assay is therefore robust against serum variation and enables a lower limit of detection.
Controlling Phoretic Swimmer Trajectory
Authors: Ebbens Stephen , Sadeghi Alireza , Howse Jonathan , Golestanian Ramin , Jones Richard 
Published: September 2011

ABSTRACTIndividually propulsive catalytic Janus particle swimmers are observed to self-assemble into aggregate swimmers with a wide variety of translational and rotational velocities. The trajectory for a given doublet is shown to be determined by the frozen in relative orientation of the particles. The new swimmers suggest applications as transport and mixing devices, and will allow study of the interplay between propulsion and Brownian phenomena. Furthermore this random assembly process can be controlled using external magnetic fields to orientate individual ferromagnetic swimming particles so as to favor the production of swimmers with particular desirable configurations resulting in linear trajectories. This approach also produces swimmers that can be orientated, and so “steered” by external fields.
Fabrication of Crystalline Semiconductor Nanowires by Vapor-Liquid-Solid Glancing Angle Deposition (VLS-GLAD) Technique
Authors: Alagoz Arif S. , Karabacak Tansel 
Published: September 2011

ABSTRACTVapor-liquid-solid (VLS) method has become one of the few and most powerful bottom-up single crystal nanowire growth techniques in nanotechnology due to its easy scalability from micro to nano feature sizes, high throughput, relatively low cost, and its applicability to various semiconductor materials. On the other hand, control of growth direction and crystal orientation of nanowires, which determine their electrical, optical, and mechanical properties, stand as major issues in VLS technique. In this study, we demonstrate a new vapor-liquid-solid glancing angle deposition (VLS-GLAD) fabrication approach to produce crystalline semiconductor nanowires with controlled geometry. VLS-GLAD is a physical vapor deposition nanowire fabrication approach based on selective deposition of nanowire source atoms onto metal catalyst nanoislands placed on a crystal wafer. In this technique, collimated obliquely incident flux of source atoms selectively deposit on catalyst islands by using “shadowing effect”. Geometrical showing effect combined with conventional VLS growth mechanism leads to the growth of tilted crystalline semiconductor nanowire arrays. In this study, we report morphological and structural properties of tilted single crystal germanium nanowire arrays fabricated by utilizing a conventional thermal evaporation system. In addition to the tilted geometry, by introducing substrate rotation, nanowires with various morphologies including helical, zig-zag, or vertical shapes can be fabricated. Engineering crystalline nanowire morphology by using VLS-GLAD have the potential of enabling control of optical, electrical, and mechanical properties of these nanostructures leading to the development of novel 3D nano-devices.
First-principles study of Oxygen deficiency in rutile Titanium Dioxide
Authors: Lee Hsin-Yi , Clark Stewart J. , Robertson John 
Published: September 2011

ABSTRACTThe energy levels of the different charge states of an oxygen vacancy and titanium interstitial in rutile TiO2 were calculated using the screened exchange (sX) hybrid functional [1]. The sX method gives 3.1 eV for the band gap of rutile TiO2, which is close to the experimental value. We report the defect formation energy of the oxygen deficient structure. It is found that the defect formation energies, for the neutral charge state, of oxygen vacancy and titanium interstitial are quite similar, 2.40 eV and 2.45 eV respectively, for an oxygen chemical potential of the O-poor condition. The similar size of these two calculated energies indicates that both are a cause of oxygen deficiency, as observed experimentally [2]. The transition energy level of oxygen vacancy lies within the band gap, corresponding to the electrons located at adjacent titanium sites. The sX method gives a correct description of the localization of defect charge densities, which is not the case for GGA [3-6].
Growth of TiO2 thin films on Si(001) and SiO2 by reactive high power impulse magnetron sputtering
Authors: Magnus F. , Agnarsson B. , Ingason A. S. , Leosson K. , Olafsson S. , Gudmundsson J. T. 
Published: September 2011

ABSTRACTThin TiO2 films were grown on Si(001) and SiO2 substrates by reactive dc magnetron sputtering (dcMS) and high power impulse magnetron sputtering (HiPIMS) at temperatures ranging from 300 to 700 °C. Both dcMS and HiPIMS produce polycrystalline rutile TiO2 grains, embedded in an amorphous matrix, despite no postannealing taking place. HiPIMS results in significantly larger grains, approaching 50% of the film thickness at 700 °C. In addition, the surface roughness of HiPIMS-grown films is below 1 nm rms in the temperature range 300–500 °C which is an order of magnitude lower than that of dcMS-grown films. The results show that smooth, rutile TiO2 films can be obtained by HiPIMS at relatively low growth temperatures, without postannealing.
Phosphorescent Organic Light-emitting Devices to Sense Contact Stresses
Authors: Cao X. A. , Zhang Y. Q. 
Published: September 2011

ABSTRACTWe studied the electrical and optical responses of organic light-emitting devices (OLEDs) with green and red phosphorescent dyes doped in a polymer matrix to compressive stresses. The green OLED converted stresses as low as 6.8 kPa into measurable and reversible changes in both current density and electroluminescence (EL) intensity. The current showed a nearly linear characteristic response with sensitivity up to 205 μA kPa-1, whereas the EL intensity decreased by over three orders of magnitude at 107 kPa. In contrast, stress-induced modulations in current and light intensity were noticeable in the red OLED only above 160 kPa. The discrepancy has been attributed to different rates of stress-enhanced back exciton energy transfer between guest and host molecules, which quenches the EL of the green OLED, but has a much smaller impact on the performance of the red OLED. It is expected that similar green phosphorescent OLEDs built on large curved surfaces may directly image stress distributions and sense touch on a par with a human finger.
Effect of Light Intensity on Schottky Barrier Widths and I-V Characteristics of Polymer Heterojunction Photodiodes
Authors: Guvenc Ali Bilge , Ozkan Cengiz , Ozkan Mihrimah 
Published: September 2011

ABSTRACTThe Schottky barriers that forms on the interface between aluminum and organic semiconductor of polymer heterojunction photodiodes based on poly(3-hexylthiophene): [6,6]-phenyl-C61-butyric acid methylester blend, has been investigated according to Mott-Schottky curves. We focused on the effect of light intensity on the Schottky barrier widths and I-V characteristics of the devices. Comparison of the mathematical models and experimental data measured under different light intensities indicate a dependency of Schottky barrier to the light intensity.
Design of CdS Quantum Dots / Multi-Walled Carbon Nanotubes Hybrid Structures for Photovoltaic Applications
Authors: Mammeri Fayna , Ballarin Andrea , Giraud Marion , Vivet Lydie , Herbst Frederic , Connan Carole , Chehimi Mohamed M. , Brusatin Giovanna , Ammar Souad 
Published: September 2011

ABSTRACTThis paper presents the preparation of multi-walled carbone nanotubes (CNTs) and CdS nanoparticles based hybrid materials. We aim at comparing two kinds of CNTs’ functionalization by thiol groups in order to demonstrate that the surface chemistry done on the CNTs can direct the morphology of the nanohybrids. Indeed, strong oxidation of CNTs leads to shorter nanotubes opened at their ends, allowing the grafting of mercaptotriethoxysilane whereas the generation of diazonium salts in presence of pristine nanotubes should lead to the functionalization of the whole lateral surface of the nanotubes. CdS nanoparticles can then be anchored to thiol groups, leading to interesting hybrid precursors for photovoltaic applications.
The diamond-solution interface: the surface energy of hydrogen terminated nanocrystalline CVD diamond derived from contact angle measurements
Authors: Janssens Stoffe D. , Drijkoningen Sien , Saitner Marc , Boyen Hans-Gerd , Haenen Ken , Wagner Patrick 
Published: September 2011

ABSTRACTIn this work, a determination of the surface energy for hydrogen terminated nanocrystalline diamond grown with microwave plasma enhanced chemical vapor deposition is presented. Five identical hydrogen terminated nanocrystalline diamond layers of ~150 nm thick are deposited on silicon substrates and examined with X-ray photoelectron spectroscopy to determine the surface groups and possible surface contaminations. In order to evaluate the surface energy, contact angle measurements are performed using the sessile drop method in combination with data analysis based on the ‘Owens, Wendt, Rabel and Kaelble’ method. Four different experimental approaches to evaluate the surface energy of hydrogen terminated nanocrystalline diamond are discussed.
Magnetoelectric properties of BST/LSMO particulate composites
Authors: Beltran-Huarac Juan , Martinez R. , Palai R. 
Published: September 2011

ABSTRACTCurrently, ferroelectric and ferromagnetic particulate composites are receiving a great deal of interest due to their novel applications in microelectronic devices. Their excellent properties such as high relative dielectric constant, low dielectric loss, strong tunability, and ferromagnetism with colossal magnetoresistance can be controlled by manipulating both electric and magnetic fields. Ba0.7Sr0.3TiO3 /La0.67Sr0.33MnO3 (BST/LSMO) composite was prepared with 20:1 wt% by a high temperature solid-state reaction route. The X-ray diffraction (XRD) pattern confirmed the formation and the coexistence of both phases corresponding to BST and LSMO. High resolution field emission scanning electron microscope (FE-SEM) and energy dispersive X-ray spectroscopy (EDS) revealed a uniform distribution of the grain size throughout the surface of the sample and the presence of all the constituent elements with its esteemed reaction stoichiometry, respectively. In spite of the presence of both phases, only one transition peak was seen (50Hz-5MHz) around 295 K in dielectric measurement suggesting a nonlinear magnetoelectric coupling. The dielectric properties of BST/LSMO composite carried with different magnetic fields (0-1.7 T) show significant change in the BST dielectric behavior at low frequencies. The M-H curves at room temperature (RT) showed a drop in the saturation magnetization compared with pure LSMO is consistent with our composite structures.
Forming Gradient Multilayer (GML) Nano Films for Photovoltaic and Energy Storage Applications
Authors: Gilman Boris , Altman Igor 
Published: September 2011

ABSTRACTFor successful implementation of the nanomaterial-based PV and Energy storage devices there is a need for well-structured nano films consisting of a strictly controlled sequence of nanoparticle layers. Most promising nano-films include a “built-in” gradient of a nanoparticle size and/or material composition across the part or entire thickness of the film. Such Gradient Multilayer (GML) nano films will be able to significantly improve a PV efficiency of the 3rd generation Solar Cells and Energy storage devices. The development of GML-based devices is presently limited by lack of simple, inexpensive, scalable, and production-worthy deposition methods that are capable of forming GML nano-film on PV-suitable substrates such as flexible materials.The proposed concept describes novel principles of an advanced non-conventional deposition of the highly efficient GML nano films.The proposed GML deposition method is based on the phenomena of Flying Particles (FP). According to the FP-methods a pre-selected mix of nanoparticles (NP) of various size and/or material composition is deposited on a flexible (or other) substrate in a pre-defined order of NP size and/or composition thus forming GML nano film. Deposited GML film comprises a sequence of size-tuned and/or composition-tuned NP layers, which has a potential for significant increase of PV efficiency.The deposition process includes the NPs launch and flight through a resistant gas ambient. Due to the Stokes aerodynamic laws the FP times-to-target will be different for NP of a different size and/or density (material composition). Simulation is presented to confirm the separation of FP”s of a different size and/or density during their motion through the low-pressure gas. The calculations have been made for the initial stages of the FP process thus establishing the most efficient parameters of the process. Resultant GML nano films are expected to have superior qualities, particularly for building high efficiency / low cost PV panels. The FP-method allows for a fast development and easy implementation in PV manufacturing.
DEMUX SiC optical transducers for fluorescent proteins detection
Authors: Vieira M. , Louro P. , Vieira M. A. , Fernandes M. , Costa J. 
Published: September 2011

ABSTRACTThis paper presents results on the optimization of multilayered a-SiC:H heterostructures that can be used as an optical transducer for fluorescent proteins detection. Stacked structures composed by p-i-n based a-SiC:H cells are used as wavelength selective devices, in the visible range. The transfer characteristics of the transducers are studied both theoretically and experimentally under several wavelength illuminations corresponding to different fluorophores and tested for a proper fine tuning in the violet, cyan and yellow wavelengths. The devices were characterized through spectral response measurements under different electrical and optical bias conditions and excitation frequencies. Results show that the output waveform is balanced by the wavelength and frequency of each input fluorescent signal, keeping the memory of the wavelength and intensity of the incoming optical carriers. To selectively recover a single wavelength a specific voltage or optical bias is applied.