bluuebunny/crossref_metadata_2025_split huggingface dataset:
« Se sentir chez soi » au musée
Authors: Blanchard Marie-Josée , Howes David 
Published: May 2015

Comment présenter la complexité sensorielle et symbolique d’une culture à l’intérieur d’un espace muséal qui possède lui-même un régime sensoriel souvent limité à la perception visuelle ? Cet article cherche à comprendre le rôle des perceptions sensorielles dans l’espace muséal à travers l’analyse de la nouvelle exposition permanenteC’est notre histoire. Premières Nations et Inuit du XXIe siècledu Musée de la civilisation à Québec. En comparant les réalités sensorielles autochtones en Amérique du Nord et la présentation qui en est faite au Musée à travers trois exemples, nous démontrerons comment les stratégies de présentation d’objets faisant appel aux sens permettent au visiteur de se plonger dans les environnements autochtones et d’en saisir plus adéquatement la symbolique et l’importance culturelle. Malgré les efforts apportés lors de la phase préparatoire, où plusieurs représentants et communautés autochtones ont été consultés sur le contenu et le design de l’exposition, les objets exposés ne correspondent pas adéquatement aux idées que voulaient y traduire les Premières Nations et Inuit. Ces derniers ont clairement exprimé vouloir se « sentir chez eux » dans cet espace muséal, mais n’ont pas réussi à pleinement s’y identifier étant donné le fossé creusé entre le sensorium muséal et les sensoria autochtones.
Musées et anthropologie : De L’Estoile B., 2007, Le goût des Autres. De l’exposition coloniale aux arts premiers. Paris, Éditions Flammarion.Mazé C., F. Poulard et C. Ventura (dir.), 2013, Les musées d’ethnologie. Culture, politique et changement institutionnel. Paris, Éditions du CTHS.
Authors: Boursiquot Fabienne 
Published: May 2015

C’est pour une bonne part dans les musées qu’émerge la discipline anthropologique auXIXe siècle. L’anthropologie se donne alors pour tâche d’étudier l’ensemble des manifestations matérielles de l’humanité. Deux ouvrages – Le goût des Autres, de Benoît de L’Estoile (2007), etLes Musées d’ethnologie, de Camille Mazé, Frédéric Poulard et Christelle Ventura (2013) – nous permettent de revenir sur les moments forts de la relation entre musées et anthropologie, et surtout de comprendre leur séparation au cours duXXe siècle.
Three different types of electric field disturbances affecting equatorial ionosphere during a long‐duration prompt penetration event
Authors: Chakrabarty D. , Rout Diptiranjan , Sekar R. , Narayanan R. , Reeves G. D. , Pant Tarun K. , Veenadhari B. , Shiokawa K. 
Published: May 2015

AbstractCoordinated digisonde and OI 630.0 nm airglow observations from Thumba (TVM), an Indian dip equatorial station, in conjunction with magnetic and geosynchronous particle flux measurements, reveal three different types of electric field disturbances in the equatorial ionosphere‐thermosphere system (ITS) occurring in succession over a period of 6 h on a single night (22–23 January,2012; Ap = 24). These include (1) westward electric field perturbations owing to a pseudo‐breakup and a substorm event, each lasting for about 30 min; (2) eastward electric field perturbations continuing for about an hour, owing to the southward excursion of Z component of interplanetary magnetic field (Bz); and (3) DP2‐type fluctuating (period ∼40 min) electric field perturbation sustaining for about 4 h. The pseudo‐breakup and the fully grown substorm events are found to be longitudinally localized and different in terms of response in the westward auroral electrojet index (AL) as well as geosynchronous electron/proton injections. The polarity of the prompt penetration of interplanetary electric field that affects the equatorial ionosphere is observed to be eastward during 2100–2200 IST (Indian Standard Time) which is observationally sparse but consistent with modeling studies. Interestingly, on the same night, DP2‐type electric field fluctuations with ∼40 min periodicity and occasional eastward polarity (akin to daytime) are also found to affect the equatorial ITS for about 4 h (2200–0200 IST). The case study, thus, brings out different processes that constitute a long duration prompt penetration event which, otherwise, would have been categorized as a single event.
A breaking internal wave in the surface ocean boundary layer
Authors: Wain Danielle J. , Lilly Jonathan M. , Callaghan Adrian H. , Yashayaev Igor , Ward Brian 
Published: May 2015

AbstractHigh‐temporal resolution measurements in the Labrador Sea surface layer are presented using an upwardly profiling autonomous microstructure instrument, which captures an internal wave in the act of breaking at the base of the surface mixed layer, driving turbulence levels 2–3 orders of magnitude above the background. While lower‐frequency (near‐inertial) internal waves are known to be important sources of turbulence, we report here a higher‐frequency internal wave breaking near the ocean surface. Due to observational limitations, the exact nature of the instability cannot be conclusively identified, but the interaction of wave‐induced velocity with unresolved background shear appears to be the most likely candidate. These observations add a new process to the list of those currently being considered as potentially important for near‐surface mixing. The geographical distribution and global significance of such features are unknown, and underscore the need for more extensive small‐scale, rapid observations of the ocean surface layer.
Infragravity‐wave dynamics in a barred coastal region, a numerical study
Authors: Rijnsdorp Dirk P. , Ruessink Gerben , Zijlema Marcel 
Published: May 2015

AbstractThis paper presents a comprehensive numerical study into the infragravity‐wave dynamics at a field site, characterized by a gently sloping barred beach. The nonhydrostatic wave‐flow model SWASH was used to simulate the local wavefield for a range of wave conditions (including mild and storm conditions). The extensive spatial coverage of the model allowed us to analyze the infragravity‐wave dynamics at spatial scales not often covered before. Overall, the model predicted a wavefield that was representative of the natural conditions, supporting the model application to analyze the wave dynamics. The infragravity‐wave field was typically dominated by leaky waves, except near the outer bar where bar‐trapped edge waves were observed. Relative contributions of bar‐trapped waves peaked during mild conditions, when they explained up to 50% of the infragravity variance. Near the outer bar, the infragravity‐wave growth was partly explained by nonlinear energy transfers from short waves. This growth was strongest for mild conditions, and decreased for more energetic conditions when short waves were breaking at the outer bar. Further shoreward, infragravity waves lost most of their energy, due to a combination of nonlinear transfers, bottom friction, and infragravity‐wave breaking. Nonlinear transfers were only effective near the inner bar, whereas near the shoreline (where losses were strongest) the dissipation was caused by the combined effect of bottom friction and breaking. This study demonstrated the model's potential to study wave dynamics at field scales not easily covered by in situ observations.
Dynamics of ocean surface mixed layer variability in the Indian Ocean
Authors: Schiller Andreas , Oke Peter R. 
Published: May 2015

AbstractWe present a new methodology that allows quantifying the impact of individual terms of the temperature and salinity conservation within the mixed layer on mixed layer depth (MLD). The method is applied to output from an ocean general circulation model in the Indian Ocean to investigate variability and changes in MLD. On seasonal timescales and for most areas of the Indian Ocean variability of MLD is tightly linked to all thermohaline budget terms. In the Indian Ocean at approximately 20°S the MLD covaries with surface heat and freshwater fluxes on intraseasonal and interannual timescales. The geography of the region includes the Leeuwin Current, plus the tropical eastern Indian Ocean for interannual surface freshwater fluxes. The range of seasonal amplitudes of MLD variability varies with individual budget terms but is typically within 1 m/month to 100 m/month. The ocean footprints of an intraseasonal tropical cyclone, tropical and midlatitude seasonal temperature and salinity budgets and interannual variability associated with the Indian Ocean Dipole Mode are analyzed. The results reveal close relationships of the thermohaline budgets within the mixed layer with the variability of the MLD. The associated tendencies of changes in MLD are consistent with Argo and satellite‐based observations of tendencies within the mixed layer and sea‐surface temperature and salinity.
Estimating wave energy dissipation in the surf zone using thermal infrared imagery
Authors: Carini Roxanne J. , Chickadel C. Chris , Jessup Andrew T. , Thomson Jim 
Published: May 2015

AbstractThermal infrared (IR) imagery is used to quantify the high spatial and temporal variability of dissipation due to wave breaking in the surf zone. The foam produced in an actively breaking crest, or wave roller, has a distinct signature in IR imagery. A retrieval algorithm is developed to detect breaking waves and extract wave roller length using measurements taken during the Surf Zone Optics 2010 experiment at Duck, NC. The remotely derived roller length and an in situ estimate of wave slope are used to estimate dissipation due to wave breaking by means of the wave‐resolving model by Duncan (1981). The wave energy dissipation rate estimates show a pattern of increased breaking during low tide over a sand bar, consistent with in situ turbulent kinetic energy dissipation rate estimates from fixed and drifting instruments over the bar. When integrated over the surf zone width, these dissipation rate estimates account for 40–69% of the incoming wave energy flux. The Duncan (1981) estimates agree with those from a dissipation parameterization by Janssen and Battjes (2007), a wave energy dissipation model commonly applied within nearshore circulation models.
The effect of the El Niño‐Southern Oscillation on U.S. regional and coastal sea level
Authors: Hamlington B. D. , Leben R. R. , Kim K.‐Y. , Nerem R. S. , Atkinson L. P. , Thompson P. R. 
Published: May 2015

AbstractAlthough much of the focus on future sea level rise concerns the long‐term trend associated with anthropogenic warming, on shorter time scales, internal climate variability can contribute significantly to regional sea level. Such sea level variability should be taken into consideration when planning efforts to mitigate the effects of future sea level change. In this study, we quantify the contribution to regional sea level of the El Niño‐Southern Oscillation (ENSO). Through cyclostationary empirical orthogonal function analysis (CSEOF) of the long reconstructed sea level data set and of a set of U.S. tide gauges, two global modes dominated by Pacific Ocean variability are identified and related to ENSO and, by extension, the Pacific Decadal Oscillation. By estimating the combined contribution of these two modes to regional sea level, we find that ENSO can contribute significantly on short time scales, with contributions of up to 20 cm along the west coast of the U.S. The CSEOF decomposition of the long tide gauge records around the U.S. highlights the influence of ENSO on the U.S. east coast. Tandem analyses of both the reconstructed and tide gauge records also examine the utility of the sea level reconstructions for near‐coast studies.
Electric field structures and waves at plasma boundaries in the inner magnetosphere
Authors: Malaspina David M. , Wygant John R. , Ergun Robert E. , Reeves Geoff D. , Skoug Ruth M. , Larsen Brian A. 
Published: May 2015

AbstractRecent observations by the Van Allen Probes spacecraft have demonstrated that a variety of electric field structures and nonlinear waves frequently occur in the inner terrestrial magnetosphere, including phase space holes, kinetic field line resonances, nonlinear whistler mode waves, and several types of double layer. However, it is unclear whether such structures and waves have a significant impact on the dynamics of the inner magnetosphere, including the radiation belts and ring current. To make progress toward quantifying their importance, this study statistically evaluates the correlation of such structures and waves with plasma boundaries. A strong correlation is found. These statistical results, combined with observations of electric field activity at propagating plasma boundaries, are consistent with the scenario that the sources of the free energy for the structures and waves of interest are localized near and comove with these boundaries. Therefore, the ability of these structures and waves to influence plasma in the inner magnetosphere is governed in part by the spatial extent and dynamics of macroscopic plasma boundaries in that region.
Pressure‐induced phase transition in MnCO3 and its implications on the deep carbon cycle
Authors: Boulard Eglantine , Goncharov Alexander F. , Blanchard Marc , L. Mao Wendy 
Published: May 2015

AbstractThe high‐pressure behavior of manganese‐rich carbonate, rhodochrosite, has been characterized up to 62 GPa by synchrotron‐based midinfrared spectroscopy and X‐ray diffraction. Modifications in both the infrared spectra and the X‐ray diffraction patterns were observed above ~35 GPa, indicating the presence of a high‐pressure phase transition at these pressures. We found that rhodochrosite adopts a structure close to CaCO3‐VI with a triclinic unit cell (a = 2.87 Å, b = 4.83 Å, c = 5.49 Å, α = 99.86°, β = 94.95°, and γ = 90.95° at 62 GPa). Using first‐principles calculations based on density functional theory, we confirmed these observations and assigned modes in the new infrared signature of the high‐pressure phase. These results suggest that high‐pressure metastable phase of calcite may play an important role in carbon storage and transport in the deep Earth.
Fault tolerant control design for a class of multi‐sensor networked control systems
Authors: Stanković Nikola , Stoican Florin , Olaru Sorin , Niculescu Silviu‐Iulian 
Published: May 2015

SummaryIn this paper, we consider a multi‐sensor networked control configuration with linear plant which is affected by a bounded additive disturbance. Shared network is used for the communication between sensors and controller. It is assumed that the sensors are prone to abrupt faults, while the controller's input may be updated with a varying time‐delay. In order to identify and isolate the sensor(s) providing faulty information, we equip the controller with a set‐based detection and isolation routine. Furthermore, in the case when the network induces time‐delays, control is performed based on the knowledge we have on the mathematical model of the plant. In the presence of model inaccuracies or disturbance, such a control action may not guarantee satisfying performance of the system. Therefore, a stabilising controller with delay compensation has been designed. The functioning of the proposed control algorithm has been illustrated through an example. Copyright © 2015 John Wiley & Sons, Ltd.
Is preoperative paranasal sinus computed tomography necessary for every patient undergoing septoplasty?
Authors: Günbey Emre , Günbey Hediye Pınar , Uygun Seda , Karabulut Hayriye , Cingi Cemal 
Published: May 2015

BackgroundThe aim of this study was to determine whether anterior rhinoscopy (AR), nasal endoscopy (NE) and paranasal sinus computed tomography (PNS CT) can predict other sinonasal obstructive pathologies in the setting of nasal septal deviation (NSD), and to evaluate the impact of preoperative PNS CT on the decision for a surgical procedure in patients with NSD.MethodsA total of 262 patients with NSD were evaluated using AR, NE, PNS CT, and the visual analogue scale (VAS) for nasal obstruction. The diagnostic values of AR, NE, and PNS CT for sinonasal obstructive pathologies, and the impact of preoperative PNS CT on the decision for a surgical procedure in patients with NSD were evaluated.ResultsPNS CT showed concomitant nasal pathologies in the 62 of 262 patients (23.6%) with NSD. Positive predictive value (PPV) and negative predictive value (NPV) of NE for concomitant nasal pathologies were 0.75 and 0.069, respectively. The sensitivity of NE for sinonasal pathologies was significantly higher in the patients with mild NSD than in the patients with moderate‐severe NSD. The decision for a surgical procedure was changed in 22 of 262 (8.3%) patients after a PNS CT.ConclusionWe recommend performing preoperative PNS CTs on patients in whom septoplasty is planned, if they have obstructive middle turbinate hypertrophy, if one is unable to evaluate the middle meatus and posterior nasal cavity because of an anteriorly severe deviation or a nasal polyp, and in patients with chronic sinusitis based on clinical and endoscopic findings.
Posterior mediastinal hematoma after a simple fall in a patient with normal coagulation
Authors: Thamamongood Thiparpa Aime , Onuki Takuya , Kuramochi Masami , Inagaki Masaharu 
Published: May 2015

CaseA 77‐year‐old woman presented with neck swelling and odynophagia following a fall from standing height. She had no history of antiplatelet or anticoagulant use. Computed tomography of the chest showed an isodense to hypodense soft tissue mass in the bilateral carotid space, retropharyngeal space, and posterior mediastinum. With no airway obstruction symptoms, the patient was placed on bed rest under close observation.OutcomeThe mass decreased in size spontaneously over the 10 days following symptom onset, accompanied by overall clinical improvement. The patient was diagnosed with a posterior mediastinal hematoma.ConclusionThis is the first reported case of posterior mediastinal hematoma caused by a neck hyperextension injury secondary to a simple fall in a patient with normal coagulation. The outcome was good; however, emergency physicians should be aware that hematomas necessitating airway management may occur after a fall.
Fascinating journeys into blue light (Nobel Lecture)
Authors: Akasaki Isamu 
Published: May 2015

Isamu Akasaki is known for inventing the bright gallium nitride (GaN) p‐n junction blue LED in 1989 and subsequently the high‐brightness GaN blue LED. Together with Shuji Nakamura and Hiroshi Amano, he is one of the three recipients of the 2014 Nobel Prize in Physics. In his Nobel Lecture, he describes the historical progress that led to the invention of the first p‐n junction blue/UV LED and related optical devices.***
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Zundel‐like and Eigen‐like Hydrated Protons on a Platinum Surface
Authors: Kim Youngsoon , Shin Sunghwan , Kang Heon 
Published: May 2015

AbstractThe nature of hydrated protons is an important topic in the fundamental study of electrode processes in acidic environment. For example, it is not yet clear whether hydrated protons are formed in the solution or on the electrode surface in the hydrogen evolution reaction on a Pt electrode. Using mass spectrometry and infrared spectroscopy, we show that hydrogen atoms are converted into hydrated protons directly on a Pt(111) surface coadsorbed with hydrogen and water in ultrahigh vacuum. The hydrated protons are preferentially stabilized as multiply hydrated species (H5O2+ and H7O3+) rather than as hydronium (H3O+) ions. These surface‐bound hydrated protons may play an important role in the interconversion between adsorbed hydrogen atoms and solvated protons in solution.
From Chemical Gardens to Fuel Cells: Generation of Electrical Potential and Current Across Self‐Assembling Iron Mineral Membranes
Authors: Barge Laura M. , Abedian Yeghegis , Russell Michael J. , Doloboff Ivria J. , Cartwright Julyan H. E. , Kidd Richard D. , Kanik Isik 
Published: May 2015

AbstractWe examine the electrochemical gradients that form across chemical garden membranes and investigate how self‐assembling, out‐of‐equilibrium inorganic precipitates—mimicking in some ways those generated in far‐from‐equilibrium natural systems—can generate electrochemical energy. Measurements of electrical potential and current were made across membranes precipitated both by injection and solution interface methods in iron‐sulfide and iron‐hydroxide reaction systems. The battery‐like nature of chemical gardens was demonstrated by linking multiple experiments in series which produced sufficient electrical energy to light an external light‐emitting diode (LED). This work paves the way for determining relevant properties of geological precipitates that may have played a role in hydrothermal redox chemistry at the origin of life, and materials applications that utilize the electrochemical properties of self‐organizing chemical systems.
Selective Dissolution of A‐Site Cations in ABO3 Perovskites: A New Path to High‐Performance Catalysts
Authors: Si Wenzhe , Wang Yu , Peng Yue , Li Junhua 
Published: May 2015

AbstractSelective dissolution is a common corrosion process in dealloying in which an alloy is immersed in acid to remove the active element, leaving behind an inert constituent. We introduce this technique into the treatment of oxide catalysts. A three‐dimensionally ordered macroporous LaMnO3 perovskite has been prepared and treated with diluted HNO3 to selectively remove La cations, acquiring a novel γ‐MnO2‐like material. LaMnO3 is not a satisfactory catalyst on CO oxidation. Upon the removal of La cations, the obtained sample showed a significantly higher CO oxidation catalytic activity (T50=89 °C) than the initial precursor LaMnO3 (T50=237 °C) and ordinary γ‐MnO2 (T50=148 °C). A large surface area, a high degree of mesoporosity, excellent low‐temperature reducibility, and especially improved surface oxygen species are deduced to be responsible for CO oxidation at lower temperatures.
High‐Activity PtRuPd/C Catalyst for Direct Dimethyl Ether Fuel Cells
Authors: Li Qing , Wen Xiaodong , Wu Gang , Chung Hoon T. , Gao Rui , Zelenay Piotr 
Published: May 2015

AbstractDimethyl ether (DME) has been considered as a promising alternative fuel for direct‐feed fuel cells but lack of an efficient DME oxidation electrocatalyst has remained the challenge for the commercialization of the direct DME fuel cell. The commonly studied binary PtRu catalyst shows much lower activity in DME than methanol oxidation. In this work, guided by density functional theory (DFT) calculation, a ternary carbon‐supported PtRuPd catalyst was designed and synthesized for DME electrooxidation. DFT calculations indicated that Pd in the ternary PtRuPd catalyst is capable of significantly decreasing the activation energy of the CO and CH bond scission during the oxidation process. As evidenced by both electrochemical measurements in an aqueous electrolyte and polymer‐electrolyte fuel cell testing, the ternary catalyst shows much higher activity (two‐fold enhancement at 0.5 V in fuel cells) than the state‐of‐the‐art binary Pt50Ru50/C catalyst (HiSPEC 12100).
Remarkable Effect of Chalcogen Substitution on an Enzyme Mimetic for Deiodination of Thyroid Hormones
Authors: Raja Karuppusamy , Mugesh Govindasamy 
Published: May 2015

AbstractIodothyronine deiodinases are selenoenzymes which regulate the thyroid hormone homeostasis by catalyzing the regioselective deiodination of thyroxine (T4). Synthetic deiodinase mimetics are important not only to understand the mechanism of enzyme catalysis, but also to develop therapeutic agents as abnormal thyroid hormone levels have implications in different diseases, such as hypoxia, myocardial infarction, critical illness, neuronal ischemia, tissue injury, and cancer. Described herein is that the replacement of sulfur/selenium atoms in a series of deiodinase mimetics by tellurium remarkably alters the reactivity as well as regioselectivity toward T4. The tellurium compounds reported in this paper represent the first examples of deiodinase mimetics which mediate sequential deiodination of T4 to produce all the hormone derivatives including T0 under physiologically relevant conditions.