bluuebunny/crossref_metadata_2025_split huggingface dataset:
Antibacterial activity and nanocomposite properties of monodispersed silver nanoparticles synthesized by the microwave method
Authors: Lothongkum Anchaleeporn W. , Wongparb Kornwika , Sethapokin Pinthep , Chaisitsak Sutichai 
Published: May 2016

Abstract
Monodispersed colloidal silver nanoparticles (Ag-NPs) were synthesized by a simple and rapid microwave method. A precursor, AgNO3, was reduced by ethylene glycol (EG) and N,N-dimethylformamide (DMF) in the presence of polyvinylpyrrolidone (PVP) as a stabilizer or capping agent. It was found that the concentration of AgNO3 significantly affected Ag-NPs particle sizes. The particle sizes decreased when the concentration decreased from 0.1 to 0.05 and 0.01 M, which corresponded to narrow size distribution of the particle diameters of approximately 60 to 80, 30 to 40 and 10 to 20 nm. The spherical-shaped monodispersed Ag-NPs were obtained by using a volume ratio of EG to DMF of 2.75 : 2.25, microwave power of 400 W and heating time of 2 min. The volume ratio of EG to DMF and the microwave power influenced the uniformity of the Ag-NPs shape and size, while the heating time had no effect. For antibacterial application, 60–80 and 10–20 nm Ag-NPs showed good disinfection ability against Escherichia coli (ATCC 25922) at the minimum inhibitory concentrations (MIC) of 32 and 16 µg × ml−1, respectively. In addition, the electrical resistance of the nanocomposites of DMF-loaded Ag-NPs (20–50 nm) without PVP on single-walled carbon nanotubes and polyethylene terephthalate (PET) was measured. As a result, it is obvious that the Ag-NPs help to increase the electrical conductivity of the nanocomposites as the electrical resistance of the Ag-NPs nanocomposites was 4.68 kΩ × cm−2 compared to that of the nanocomposites without Ag-NPs of 8.76 kΩ × cm−2.
GNE-Myopathy in a Greek Romani Family with Unusual Calf Phenotype and Protein Aggregation Pathology
Authors: Papadimas G.K. , Evilä A. , Papadopoulos C. , Kararizou E. , Manta P. , Udd B. 
Published: May 2016

Background: GNE-myopathy is increasingly diagnosed in different ethnicities worldwide. No clear genotype-phenotype correlation has been established to date. Case reports: We describe two affected members of the same family from Balkan population carrying an already known homozygous pathogenic mutation in the kinase domain of the UDP-N-acetylglucosamine 2 epimerase/N-acetylmannosamime kinase ( GNE) gene. The patients presented with severe distal weakness of lower legs combined with rimmed vacuoles in muscle biopsy. However, in contrast to the typical pattern of muscle involvement, one of them showed severe involvement of posterior calf muscles with spared anterior compartment of the lower leg muscles. Conclusions: These patients provide evidence for a larger variability and further extend the phenotypic spectrum of GNE-myopathy to include preferential calf involvement.
DETECTION OF THE YORP EFFECT FOR SMALL ASTEROIDS IN THE KARIN CLUSTER
Authors: Carruba V. , Nesvorný D. , Vokrouhlický D. 
Published: May 2016

ABSTRACT
The Karin cluster is a young asteroid family thought to have formed only

≃
5.75

Myr ago. The young age can be demonstrated by numerically integrating the orbits of Karin cluster members backward in time and showing the convergence of the perihelion and nodal longitudes (as well as other orbital elements). Previous work has pointed out that the convergence is not ideal if the backward integration only accounts for the gravitational perturbations from the solar system planets. It improves when the thermal radiation force known as the Yarkovsky effect is accounted for. This argument can be used to estimate the spin obliquities of the Karin cluster members. Here we take advantage of the fast growing membership of the Karin cluster and show that the obliquity distribution of diameter

D
≃
1
–
2

km Karin asteroids is bimodal, as expected if the YORP effect acted to move obliquities toward extreme values (0° or 180°). The measured magnitude of the effect is consistent with the standard YORP model. The surface thermal conductivity is inferred to be 0.07–0.2 W m−1 K−1 (thermal inertia

≃
300
–
500

J m−2 K−1 s

−
1

/

2

). We find that the strength of the YORP effect is roughly

≃
0.7

of the nominal strength obtained for a collection of random Gaussian spheroids. These results are consistent with a surface composed of rough, rocky regolith. The obliquity values predicted here for 480 members of the Karin cluster can be validated by the light-curve inversion method.
THERMAL CHARACTERISTICS AND THE DIFFERENTIAL EMISSION MEASURE DISTRIBUTION DURING A B8.3 FLARE ON 2009 JULY 4
Authors: Awasthi Arun Kumar , Sylwester Barbara , Sylwester Janusz , Jain Rajmal 
Published: May 2016

ABSTRACT
We investigate the evolution of the differential emission measure distribution (DEM[T]) in various phases of a B8.3 flare which occurred on 2009 July 04. We analyze the soft X-ray (SXR) emission in the 1.6–8.0 keV range, recorded collectively by the Solar Photometer in X-rays (SphinX; Polish) and the Solar X-ray Spectrometer (Indian) instruments. We conduct a comparative investigation of the best-fit DEM[T] distributions derived by employing various inversion schemes, namely, single Gaussian, power-law functions and a Withbroe–Sylwester (W–S) maximum likelihood algorithm. In addition, the SXR spectrum in three different energy bands, that is, 1.6–5.0 keV (low), 5.0–8.0 keV (high), and 1.6–8.0 keV (combined), is analyzed to determine the dependence of the best-fit DEM[T] distribution on the selection of the energy interval. The evolution of the DEM[T] distribution, derived using a W–S algorithm, reveals multi-thermal plasma during the rise to the maximum phase of the flare, and isothermal plasma in the post-maximum phase of the flare. The thermal energy content is estimated by considering the flare plasma to be (1) isothermal and (2) multi-thermal in nature. We find that the energy content during the flare, estimated using the multi-thermal approach, is in good agreement with that derived using the isothermal assumption, except during the flare maximum. Furthermore, the (multi-) thermal energy estimated while employing the low-energy band of the SXR spectrum results in higher values than that derived from the combined energy band. On the contrary, the analysis of the high-energy band of the SXR spectrum leads to lower thermal energy than that estimated from the combined energy band.
THE QUEST FOR DUSTY STAR-FORMING GALAXIES AT HIGH REDSHIFT z ≳ 4
Authors: Mancuso C. , Lapi A. , Shi J. , Gonzalez-Nuevo J. , Aversa R. , Danese L. 
Published: May 2016

ABSTRACT
We exploit the continuity equation approach and “main-sequence” star formation timescales to show that the observed high abundance of galaxies with stellar masses ≳ a few 1010
M
⊙ at redshift z ≳ 4 implies the existence of a galaxy population featuring large star formation rates (SFRs) ψ ≳ 102
M
⊙ yr−1 in heavily dust-obscured conditions. These galaxies constitute the high-redshift counterparts of the dusty star-forming population already surveyed for z ≲ 3 in the far-IR band by the Herschel Space Observatory. We work out specific predictions for the evolution of the corresponding stellar mass and SFR functions out to z ∼ 10, determining that the number density at z ≲ 8 for SFRs ψ ≳ 30 M
⊙ yr−1 cannot be estimated relying on the UV luminosity function alone, even when standard corrections for dust extinction based on the UV slope are applied. We compute the number counts and redshift distributions (including galaxy-scale gravitational lensing) of this galaxy population, and show that current data from the AzTEC-LABOCA, SCUBA-2, and ALMA-SPT surveys are already addressing it. We demonstrate how an observational strategy based on color preselection in the far-IR or (sub-)millimeter band with Herschel and SCUBA-2, supplemented by photometric data from on-source observations with ALMA, can allow us to reconstruct the bright end of the SFR functions out to z ≲ 8. In parallel, such a challenging task can be managed by exploiting current UV surveys in combination with (sub-)millimeter observations by ALMA and NIKA2 and/or radio observations by SKA and its precursors.
SUB-INERTIAL GRAVITY MODES IN THE B8V STAR KIC 7760680 REVEAL MODERATE CORE OVERSHOOTING AND LOW VERTICAL DIFFUSIVE MIXING
Authors: Moravveji Ehsan , Townsend Richard H. D. , Aerts Conny , Mathis Stéphane 
Published: May 2016

ABSTRACT
Thus far, KIC 7760680 is the richest slowly pulsating B star, exhibiting 36 consecutive dipole (ℓ = 1) gravity (g-) modes. The monotonically decreasing period spacing of the series, in addition to the local dips in the pattern, confirm that KIC 7760680 is a moderate rotator with clear mode trapping in chemically inhomogeneous layers. We employ the traditional approximation of rotation to incorporate rotational effects on g-mode frequencies. Our detailed forward asteroseismic modeling of this g-mode series reveals that KIC 7760680 is a moderately rotating B star with mass ∼3.25 M
⊙. By simultaneously matching the slope of the period spacing and the number of modes in the observed frequency range, we deduce that the equatorial rotation frequency of KIC 7760680 is 0.4805 day−1, which is 26% of its Roche break up frequency. The relative deviation of the model frequencies and those observed is less than 1%. We succeed in tightly constraining the exponentially decaying convective core overshooting parameter to f
ov ≈ 0.024 ± 0.001. This means that convective core overshooting can coexist with moderate rotation. Moreover, models with exponentially decaying overshoot from the core outperform those with the classical step-function overshoot. The best value for extra diffusive mixing in the radiatively stable envelope is confined to

(with D
ext in cm2 s−1), which is notably smaller than theoretical predictions.
THE MULTI-WAVELENGTH CHARACTERISTICS OF THE TeV BINARY LS I+61°303
Authors: Saha L. , Chitnis V. R. , Shukla A. , Rao A. R. , Acharya B. S. 
Published: May 2016

ABSTRACT
We study the characteristics of the TeV binary LS I+61°303 in radio, soft X-ray, hard X-ray, and gamma-ray (GeV and TeV) energies. The long-term variability characteristics are examined as a function of the phase of the binary period of 26.496 days as well as the phase of the superorbital period of 1626 days, dividing the observations into a matrix of 10 × 10 phases of these two periods. We find that the long-term variability can be described by a sine function of the superorbital period, with the phase and amplitude systematically varying with the binary period phase. We also find a definite wavelength-dependent change in this variability description. To understand the radiation mechanism, we define three states in the orbital/superorbital phase matrix and examine the wideband spectral energy distribution. The derived source parameters indicate that the emission geometry is dominated by a jet structure showing a systematic variation with the orbital/superorbital period. We suggest that LS I+61°303 is likely a microquasar with a steady jet.
SLIPPING MAGNETIC RECONNECTIONS WITH MULTIPLE FLARE RIBBONS DURING AN X-CLASS SOLAR FLARE
Authors: Zheng Ruisheng , Chen Yao , Wang Bing 
Published: May 2016

ABSTRACT
With the observations of the Solar Dynamics Observatory, we present the slipping magnetic reconnections with multiple flare ribbons (FRs) during an X1.2 eruptive flare on 2014 January 7. A center negative polarity was surrounded by several positive ones, and three FRs appeared. The three FRs showed apparent slipping motions, and hook structures formed at their ends. Due to the moving footpoints of the erupting structures, one tight semi-circular hook disappeared after the slippage along its inner and outer edges, and coronal dimmings formed within the hook. The east hook also faded as a result of the magnetic reconnection between the arcades of a remote filament and a hot loop that was impulsively heated by the under flare loops. Our results are accordant with the slipping magnetic reconnection regime in three-dimensional standard model for eruptive flares. We suggest that the complex structures of the flare are likely a consequence of the more complex flux distribution in the photosphere, and the eruption involves at least two magnetic reconnections.
EVIDENCE FOR A COMMON ACCELERATION MECHANISM FOR ENRICHMENTS OF 3He AND HEAVY IONS IN IMPULSIVE SEP EVENTS
Authors: Mason Glenn M. , Nitta Nariaki V. , Wiedenbeck Mark E. , Innes Davina E. 
Published: May 2016

ABSTRACT
We have surveyed the period 1997–2015 for a rare type of 3He-rich solar energetic particle (SEP) event, with enormously enhanced values of the S/O ratio, that differs from the majority of 3He-rich events, which show enhancements of heavy ions increasing smoothly with mass. Sixteen events were found, most of them small but with solar source characteristics similar to other 3He-rich SEP events. A single event on 2014 May 16 had higher intensities than the others, and curved Si and S spectra that crossed the O spectrum above ∼200 keV nucleon−1. Such crossings of heavy-ion spectra have never previously been reported. The dual enhancement of Si and S suggests that element Q/M ratio is critical to the enhancement since this pair of elements uniquely has very similar Q/M ratios over a wide range of temperatures. Besides 3He, Si, and S, in this same event the C, N, and Fe spectra also showed curved shape and enhanced abundances compared to O. The spectral similarities suggest that all have been produced from the same mechanism that enhances 3He. The enhancements are large only in the high-energy portion of the spectrum, and so affect only a small fraction of the ions. The observations suggest that the accelerated plasma was initially cool (∼0.4 MK) and was then heated to a few million kelvin to generate the preferred Q/M ratio in the range C–Fe. The temperature profile may be the distinct feature of these events that produces the unusual abundance signature.
Reducing bacterial contamination in an Orthopedic Theatre ventilated by natural ventilation, in a Developing Country
Authors: Thomas Stephanie , Palmer Rish , Phillipo Edward , Chipungu Geoffrey 
Published: May 2016

Introduction: All surgical procedures have the potential for infection and some of the main sources are contamination from airborne particles, theatre personnel and the theatre environment. There is strong evidence that the use of ultra-clean air flow systems in orthopedic operating theatres reduces the incidence of deep sepsis after surgery. In the developing world however, this is often an unrealistic solution. The aim of this study was to establish baseline levels of contamination in a working orthopedic theatre, at the Queen Elizabeth Central Hospital, Blantyre, Malawi. To feedback results to the theatre team, promote infection prevention discussion and work with the team to implement workable and realistic goals to improve the intra-operative environment. Methodology: Samples were collected from theatre equipment available at the time of surgery, from theatre water and theatre air using passive air sampling techniques. Samples were immediately transferred to the Central Microbiology Laboratory for culture on basic culture media. Results: Bacterial contamination of theatre equipment, intra-operative theatre air and water was detected. Results were discussed with the theatre and infection prevention team who were receptive to feedback with regards to infection prevention strategies and keen to develop simple measures which could be put in place to change practice. Conclusions: In this setting, we suggest that implementing workable and realistic goals such as, establishing baseline rates of bacterial contamination and introduction of strict protocols for asepsis and theatre etiquette, may reduce bacterial contamination rates and subsequent intra-operative infection in the absence of expensive engineering solutions.
Trajectoires de l’agriculture (péri)urbaine à Lima : entre désintérêt et renouveau de l’activité
Authors: Leloup Héloïse 
Published: May 2016

L’agriculture en milieu urbain est de plus en plus valorisée et reconnue pour ses multiples fonctions (alimentaires, environnementales, sociales). Elle participe à l’aménagement des territoires de la ville et transforme les manières de l’habiter. Nous proposons d’analyser la situation de l’agriculture urbaine à Lima, où l’activité est soumise à de multiples pressions. L’étude porte à la fois sur la dynamique des terrains agricoles situés en périphéries et sur l’émergence des potagers urbains. Quelle est la place de l’activité agricole à Lima et comment les autorités publiques l’intègrent-elles à leurs politiques ? Il apparaît à première vue que l’activité ne présente qu’un intérêt limité et qu’elle soit vouée à conserver une place marginale dans le paysage liménien, voire à disparaître. Certains acteurs continuent toutefois de profiter de l’agriculture (création de revenus, renforcement des liens sociaux) et celle-ci commence à susciter un intérêt nouveau à la fois pour les citadins, qu’ils soient producteurs ou non, et les autorités.
L’agriculture urbaine dans la Ville de Mexico : analyse critique des politiques
Authors: Saavedra Peláez Fernando 
Published: May 2016

Cet article mène une réflexion critique sur les politiques du gouvernement de la Ville de Mexico en ce qui concerne l’agriculture urbaine, contribuant ainsi à cerner des problèmes également présents dans d’autres villes latino-américaines et caribéennes. Par agriculture « urbaine », on entend en général celle qui est pratiquée d’une part à l’intérieur de la ville et d’autre part en périphérie de celle-ci, qui est appelée périurbaine. La première ne pose pas de problème de délimitation, mais la notion d’agriculture périurbaine est souvent peu claire, en termes conceptuels et spatiaux. Ainsi, les politiques publiques de la Ville de Mexico ne distinguent que peu les divers types d’agriculture, urbaine ou rurale, et leurs problématiques propres. Cette indéfinition a pour conséquence un manque de pertinence et d’efficacité, qui peut être pallié par une analyse plus précise des types d’espaces et des rôles potentiels de l’agriculture dans chacun d’entre eux.
À propos du texte de Sára Botella Pensées après-coup sur le perceptif
Authors: Aisenstein Marilia 
Published: May 2016

L’auteur commente le texte de Sára Botella et discute de la notion d’opacité	qu’elle cherche à comparer au Négatif Greenien et à l’Invisible de Merleau Ponty.
À propos de la notion de cohérence en optique et en psychanalyse
Authors: Delourmel Christian 
Published: May 2016

Le recours, à titre métaphorique, à la notion physique de cohérence permet de penser en psychanalyse la complexité d’un processuel par laquelle s’opèrent de façon concomitante et récursive au cours de la satisfaction hallucinatoire du désir : la constitution et l’inscription de la trace perceptive et sa transformation en trace inconsciente, l’émergence de la fonction maternelle concomitante de celle de la fonction paternelle et la constitution du représentant psychique de la pulsion.
Retour au concept de représentation-limite chez Freud
Authors: Ody Michel 
Published: May 2016

La notion freudienne de « représentation limite » mériterait un statut conceptuel, bien que Freud n’utilisa ce terme qu’une seule fois en 1896. Freud, dans les années 1890, avança certaines idées qui ne trouvèrent leur développement que bien plus tard, y compris après son œuvre. Ainsi, dans le Manuscrit K, il condense des concepts qui sont à la fois dans la représentation, et hors de celle-ci, comme ce qui est dans la névrose et – pour le traumatisme, par l’effroi ( Schreck ) – hors de celle-ci.
La problématique de l’innovation en France
Authors: Battini Pierre 
Published: May 2016

La France est un pays formidable...un pays de découvreurs, d’inventeurs, d’innovateurs, d’entrepreneurs comme en témoignent de nombreuses personnalités. Paradoxe, la France n’apparaît jamais bien classée par rapport aux autres pays : elle est classée 11ème en Europe et 23 ème dans le monde. Et pourtant nous détenons un système de soutien public de l’innovation sans comparaison dans le monde entier. De nombreux disfonctionnements, une administration tentaculaire et paralysante et des financements très insuffisants expliquent principalement ces mauvaises positions par rapport à des concurrents. Les entreprises et les créateurs ne retirent pas suffisamment de bénéfices de leurs efforts et de leurs investissements. Pourtant les solutions pour un meilleur classement sont connues... il ne resterait qu’à les mettre en œuvre pour obtenir de meilleurs résultats pour notre économie et son développement. Le constat : à ce jour nous sommes rattrapés par nos concurrents et seront bientôt dépassés.
Case Report: Gallbladder Varices in a Patient with Portal Vein Thrombosis Secondary to Hepatocellular Carcinoma
Authors: Gnerre Jeffrey , Sun Yankai , Jedynak Andrzej , Gilet Anthony 
Published: May 2016

Gallbladder varices are a rare form of collateralization that develop in patients with portal hypertension. We present here a case of gallbladder varices accurately diagnosed by contrast enhanced CT imaging of the abdomen and confirmed by Color Doppler Sonography. A 76-year-old patient with hepatocellular carcinoma developed portal vein thrombosis due to tumor extension during the course of treatment and was incidentally discovered to have gallbladder varices. While most commonly asymptomatic, gallbladder varices are associated with increased risk of massive bleeding, either spontaneously or during cholecystectomy. As a result, the existence of such varices should be well documented if the patient is to undergo any abdominal surgical procedures. In addition, because of a particular association with portal vein thrombosis, patients with portal hypertension that are found to possess gallbladder varices should be evaluated for portal vein thrombosis.
Arrêt des traitements et idéologies thérapeutiques du cancer
Authors: Mino Jean-Christophe , Cohen-Solal Zoé , Kentish-Barnes Nancy 
Published: May 2016

En France, la majorité des décès des personnes atteintes de cancer se déroulent à l’hôpital. A partir d’entretiens approfondis avec 18 médecins cancérologues hospitaliers, cet article explore la manière dont ceux-ci conçoivent l’arrêt des traitements et les soins de fin de vie. Alors que tous les praticiens se disent confrontés au poids de la décision d’arrêt et à la complexité du travail en équipe, l’analyse permet de distinguer deux grands types de discours. Ceux-ci renvoient à deux catégories « d’idéologies thérapeutiques du cancer », sous-tendues par des valeurs différentes quant à la prise en charge et un rapport particulier à la phase terminale. Ces idéologies recouvrent des points de vue sur les soins du cancer qui se révèlent justement lorsque le traitement cancérologique n’est plus efficace. Sont ici en jeu des conceptions de la trajectoire de maladie et du rôle du cancérologue, sans doute cruciales dans les attitudes et les pratiques des médecins.
Reading ‘blackface’: A (narrative) introduction to Richard Kearney’s notion of carnal hermeneutics
Authors: Pretorius Helgard 
Published: May 2016

Prominent Irish philosopher Richard Kearney’s notion of ‘carnal hermeneutics’ is introduced by applying it to a case study of a recent event that took place at one of South Africa’s university campuses. The narrative assists in illuminating some of the core principles of carnal hermeneutics and illustrates the applicability of carnal hermeneutics as a ‘diagnostic caring for lived existence’. In the process, an analysis is also given of the event in question, which is connected to what has widely been labelled as ‘blackface’. In conclusion, the contextual, philosophical, ethical, and theological implications of carnal hermeneutics are explored with an eye on theological praxes in South Africa today. Keywords: Carnal Hermeneutics; Hermeneutics; Flesh; Body; Richard Kearney; Merleau-Ponty; Ricoeur; Blackface