bluuebunny/crossref_metadata_2025 huggingface dataset:
Acid Ionic Liquids as a New Hardener in Urea-Glyoxal Adhesive Resins
Authors: Younesi-Kordkheili Hamed , Pizzi Antonio
Published: February 2016

The effect of acidic ionic liquid (IL) as a new catalyst on the properties of wood-based panels bonded with urea-glyoxal (UG) resins was investigated. Different levels of N-methyl-2-pyrrolidone hydrogen sulfate ([HNMP] HSO4 (0, 1, 2, 3 wt %)) were added to prepared UG resin. The resin was then used for preparing laboratory particleboard panels. Then, the properties of the prepared panels were evaluated. The structure of the prepared UG resin was studied by 13C NMR, and thermal curing behavior of the resin before and after the addition of IL was measured by DSC. Additionally, the main oligomers formed in the UG reaction were identified by matrix-assisted laser desorption/ionization time-of-flight (MALDI TOF) mass spectroscopy. The results indicated that IL can be used as an efficient catalyst for UG resin. The physicochemical tests indicated that the addition of [HNMP] HSO4 from 0 to 3 wt % decreased the pH value of the glue-mix, and the pH decreased on curing to the same level as urea-formaldehyde resins. The gel accelerated with increasing catalyst content and with the decreasing of the pH in the UG resin. The panels prepared with IL had higher mechanical strength and dimensional stability compared to those made from UG resins containing NH4Cl. Scanning electron microscope (SEM) micrographs showed that the panels prepared with ionic liquid presented low porous. DSC analysis showed that the addition of IL to the UG resin decrease the energy of activation of the curing reaction to render possible cross-linking. The MALDI TOF results indicated a preponderant linearity of the oligomers formed, implying a high energy of activation of curing for UG resins.
Outage Performance Analysis of Relay Selection Schemes in Wireless Energy Harvesting Cooperative Networks over Non-Identical Rayleigh Fading Channels
Authors: Do Nhu , Bao Vo , An Beongku
Published: February 2016

In this paper, we study relay selection in decode-and-forward wireless energy harvesting cooperative networks. In contrast to conventional cooperative networks, the relays harvest energy from the source’s radio-frequency radiation and then use that energy to forward the source information. Considering power splitting receiver architecture used at relays to harvest energy, we are concerned with the performance of two popular relay selection schemes, namely, partial relay selection (PRS) scheme and optimal relay selection (ORS) scheme. In particular, we analyze the system performance in terms of outage probability (OP) over independent and non-identical (i.n.i.d.) Rayleigh fading channels. We derive the closed-form approximations for the system outage probabilities of both schemes and validate the analysis by the Monte-Carlo simulation. The numerical results provide comprehensive performance comparison between the PRS and ORS schemes and reveal the effect of wireless energy harvesting on the outage performances of both schemes. Additionally, we also show the advantages and drawbacks of the wireless energy harvesting cooperative networks and compare to the conventional cooperative networks.
Retargeting Strategies for Oncolytic Herpes Simplex Viruses
Authors: Campadelli-Fiume Gabriella , Petrovic Biljana , Leoni Valerio , Gianni Tatiana , Avitabile Elisa , Casiraghi Costanza , Gatta Valentina
Published: February 2016

Most of the oncolytic herpes simplex viruses (HSVs) exhibit a high safety profile achieved through attenuation. They carry defects in virulence proteins that antagonize host cell response to the virus, including innate response, apoptosis, authophagy, and depend on tumor cell proliferation. They grow robustly in cancer cells, provided that these are deficient in host cell responses, which is often the case. To overcome the attenuation limits, a strategy is to render the virus highly cancer-specific, e.g., by retargeting their tropism to cancer-specific receptors, and detargeting from natural receptors. The target we selected is HER-2, overexpressed in breast, ovarian and other cancers. Entry of wt-HSV requires the essential glycoproteins gD, gH/gL and gB. Here, we reviewed that oncolytic HSV retargeting was achieved through modifications in gD: the addition of a single-chain antibody (scFv) to HER-2 coupled with appropriate deletions to remove part of the natural receptors’ binding sites. Recently, we showed that also gH/gL can be a retargeting tool. The insertion of an scFv to HER-2 at the gH N-terminus, coupled with deletions in gD, led to a recombinant capable to use HER-2 as the sole receptor. The retargeted oncolytic HSVs can be administered systemically by means of carrier cells-forcedly-infected mesenchymal stem cells. Altogether, the retargeted oncolytic HSVs are highly cancer-specific and their replication is not dependent on intrinsic defects of the tumor cells. They might be further modified to express immunomodulatory molecules.
Inhibition of Migration and Invasion by Tet-1 Overexpression in Human Lung Carcinoma H460 Cells
Authors: Park Si Jun , Lee Bo Ram , Kim Hyeng-Soo , Ji Young Rae , Sung Yong Hun , ShikChoi Kwang , Park Hum Dai , Kim Sung-Hyun , Kim Myoung Ok , Ryoo Zae Young
Published: February 2016

In the present study, we found that lung cancer cell line (H460 cells) expressing Tet1 showed higher levels of adhesion, and Tet1 inhibited H460 cell proliferation. In addition, these cells showed a significantly reduced ability of collagen degradation and Smad2/3 phosphorylation compared
to controls. Furthermore, vimentin was found to be highly expressed in larger metastatic cancer area. Tet1 overexpression was reduced in the epithelial marker E-cadherin. Moreover, Tet1 repressed cancer cell metastasis in nude mice. Collectively, these findings suggest that Tet1 expression
plays a critical role in metastasis of lung cancer cells by suppression of invasion and epithelial‐mesenchymal transition (EMT).
Long Noncoding RNA H19-Derived miR-675 Enhances Proliferation and Invasion via RUNX1 in Gastric Cancer Cells
Authors: Liu Gao , Xiang Tian , Wu Quan-Feng , Wang Wei-Xing
Published: February 2016

The lncRNA H19 and its mature product miR-675 have recently been shown to be upregulated and promote the progression of gastric cancer. However, the detailed function and underlying molecular mechanism of H19/miR-675 in the carcinogenesis of gastric cancer remains unclear. In this study,
we found that H19 depended on miR-675 to enhance the proliferation and invasion of gastric cancer AGS cells, and the expression of miR-675 was positively correlated with H19 in patients with gastric cancer. Subsequently, the tumor-suppressor runt domain transcription factor 1 (RUNX1) was confirmed
to be a downstream molecule of H19/miR-675 axis, since overexpression of H19 or miR-675 significantly decreased RUNX1 expression in AGS cells, and knockdown of H19 or miR-675 enhanced RUNX1 expression. More importantly, a series of assays further demonstrated that introduction of RUNX1 abrogated
H19/miR-675-induced Akt/mTOR pathway activation and the following cellular proliferation and invasion of AGS cells. To our knowledge, this is the time to demonstrate that RUNX1 serves as a link between H19/miR-675 axis and Akt/mTOR signaling and is a pivotal mediator in gastric cancer progression
induced by H19/miR-675. Thus, our study provides important clues for understanding the key roles of lncRNA-miRNA functional network and identifying new therapeutic targets for gastric cancer.
HSP27 Knockdown Increases Cytoplasmic p21 and Cisplatin Sensitivity in Ovarian Carcinoma Cells
Authors: Lu Hao , Sun Chaoyang , Zhou Ting , Zhou Bo , Guo Ensong , Shan Wanying , Xia Meng , Li Kezhen , Weng Danhui , Meng Li , Xu Xiaoyan , Hu Junbo , Ma Ding , Chen Gang
Published: February 2016

Drug resistance is the leading cause of chemotherapy failure in the treatment of ovarian cancer. So far, little is known about the mechanism of chemoresistance in ovarian cancer. In this study, we explored the mechanism that HSP27 was involved in cisplatin resistance of ovarian cancer
both in vitro and clinically. HSP27 protein was found to be upregulated and expressed in cisplatin-resistant ovarian cancer cell line C13*, and HSP27 siRNA transfection reversed the chemoresistance of C13*. We found that HSP27 exerted its chemoresistant role by inhibiting p21 transferring
from the nucleus to the plasma through the activation of phosphorylated-Akt pathway. These findings have implications for clinical trials aimed at a potential therapeutic target for ovarian tumors that are refractory to conventional treatment.
Optimized methods for preparation of 6I-(ω-sulfanyl-alkylene-sulfanyl)-β-cyclodextrin derivatives
Authors: Bednářová Eva , Hybelbauerová Simona , Jindřich Jindřich
Published: February 2016

A general high-yielding method for the preparation of monosubstituted β-cyclodextrin derivatives which have attached a thiol group in position 6 is described. The thiol group is attached through linkers of different lengths and repeating units (ethylene glycol or methylene). The target compounds were characterized by IR, MS and NMR spectra. A simple method for their complete conversion to the corresponding disulfides as well as a method for the reduction of the disulfides back to the thiols is presented. Both, thiols and disulfides are derivatives usable for well-defined covalent attachment of cyclodextrin to gold or polydopamine-coated solid surfaces.
CORPORATE GOVERNANCE, FIRM PERFORMANCE, AND ECONOMIC GROWTH – THEORETICAL ANALYSIS
Authors: ŠKARE Marinko , HASIĆ Tea
Published: February 2016

Corporate governance in today's modern economies is growing in importance within the growth accounting equation. Although we look at corporate governance as final product of 20/21st century economies, old economic growth theories were aware of its importance for growth and development. Roots of corporate governance go back to the ancient economies of India and Greece also. This paper offers a consistent literature review assessing the nexus between corporate performance and economic growth. Individual and cross-country studies show corporate governance in majority of the cases positively affects firms performance and in turn nations' economic growth. Empirical and theoretical research show corporate governance is an important growth determinant to be reviewed in the field of growth models. This article summarizes main findings providing future research directions on the corporate governance – economic growth nexus.
JELLYFISH GALAXY CANDIDATES AT LOW REDSHIFT
Authors: Poggianti B. M. , Fasano G. , Omizzolo A. , Gullieuszik M. , Bettoni D. , Moretti A. , Paccagnella A. , Jaffé Y. L. , Vulcani B. , Fritz J. , Couch W. , D’Onofrio M.
Published: February 2016

Galaxies that are being stripped of their gas can sometimes be recognized from their optical appearance. Extreme examples of stripped galaxies are the so-called “jellyfish galaxies” that exhibit tentacles of debris material with a characteristic jellyfish morphology. We have conducted the first systematic search for galaxies that are being stripped of their gas at low-z (z = 0.04−0.07) in different environments, selecting galaxies with varying degrees of morphological evidence for stripping. We have visually inspected B- and V-band images and identified 344 candidates in 71 galaxy clusters of the OMEGAWINGS+WINGS sample and 75 candidates in groups and lower mass structures in the PM2GC sample. We present the atlas of stripping candidates and a first analysis of their environment and their basic properties, such as morphologies, star formation rates and galaxy stellar masses. Candidates are found in all clusters and at all clustercentric radii, and their number does not correlate with the cluster velocity dispersion σ or X-ray luminosity L
X. Interestingly, convincing cases of candidates are also found in groups and lower mass halos (1011−1014
M
⊙), although the physical mechanism at work needs to be securely identified. All the candidates are disky, have stellar masses ranging from log M/M
⊙ < 9 to > 11.5 and the majority of them form stars at a rate that is on average a factor of 2 higher (2.5σ) compared to non-stripped galaxies of similar mass. The few post-starburst and passive candidates have weak stripping evidence. We conclude that disturbed morphologies suggestive of stripping phenomena are ubiquitous in clusters and could be present even in groups and low mass halos. Further studies will reveal the physics of the gas stripping and clarify the mechanisms at work.
IVS OBSERVATION OF ICRF2-GAIA TRANSFER SOURCES
Authors: Le Bail K. , Gipson J. M. , Gordon D. , MacMillan D. S. , Behrend D. , Thomas C. C. , Bolotin S. , Himwich W. E. , Baver K. D. , Corey B. E. , Titus M. , Bourda G. , Charlot P. , Collioud A.
Published: February 2016

The second realization of the International Celestial Reference Frame (ICRF2), which is the current fundamental celestial reference frame adopted by the International Astronomical Union, is based on Very Long Baseline Interferometry (VLBI) data at radio frequencies in X band and S band. The European Space Agency’s Gaia mission, launched on 2013 December 19, started routine scientific operations in 2014 July. By scanning the whole sky, it is expected to observe ∼500,000 Quasi Stellar Objects in the optical domain an average of 70 times each during the five years of the mission. This means that, in the future, two extragalactic celestial reference frames, at two different frequency domains, will coexist. It will thus be important to align them very accurately. In 2012, the Laboratoire d’Astrophysique de Bordeaux (LAB) selected 195 sources from ICRF2 that will be observed by Gaia and should be suitable for aligning the radio and optical frames: they are called ICRF2-Gaia transfer sources. The LAB submitted a proposal to the International VLBI Service (IVS) to regularly observe these ICRF2-Gaia transfer sources at the same rate as Gaia observes them in the optical realm, e.g., roughly once a month. We describe our successful effort to implement such a program and report on the results. Most observations of the ICRF2-Gaia transfer sources now occur automatically as part of the IVS source monitoring program, while a subset of 37 sources requires special attention. Beginning in 2013, we scheduled 25 VLBI sessions devoted in whole or in part to measuring these 37 sources. Of the 195 sources, all but one have been successfully observed in the 12 months prior to 2015 September 01. Of the sources, 87 met their observing target of 12 successful sessions per year. The position uncertainties of all of the ICRF2-Gaia transfer sources have improved since the start of this observing program. For a subset of 24 sources whose positions were very poorly known, the uncertainty has decreased, on average, by a factor of four. This observing program is successful because the two main goals were reached for most of the 195 ICRF2-Gaia transfer sources: observing at the requested target of 12 successful sessions per year and improving the position uncertainties to better than 200 μas for both R.A. and decl. However, scheduling some of the transfer sources remains a challenge because of network geometry and the weakness of the sources, and this will be one focus of future sessions used in this ongoing program.
ELECTROMAGNETIC EMISSION FROM LONG-LIVED BINARY NEUTRON STAR MERGER REMNANTS. II. LIGHT CURVES AND SPECTRA
Authors: Siegel Daniel M. , Ciolfi Riccardo
Published: February 2016

Recent observations indicate that in a large fraction of binary neutron star (BNS) mergers a long-lived neutron star (NS) may be formed rather than a black hole. Unambiguous electromagnetic (EM) signatures of such a scenario would strongly impact our knowledge on how short gamma-ray bursts (SGRBs) and their afterglow radiation are generated. Furthermore, such EM signals would have profound implications for multimessenger astronomy with joint EM and gravitational-wave (GW) observations of BNS mergers, which will soon become reality thanks to the ground-based advanced LIGO/Virgo GW detector network. Here we explore such EM signatures based on the model presented in a companion paper, which provides a self-consistent evolution of the post-merger system and its EM emission up to ∼107 s. Light curves and spectra are computed for a wide range of post-merger physical properties. We present X-ray afterglow light curves corresponding to the “standard” and the “time-reversal” scenario for SGRBs (prompt emission associated with the merger or with the collapse of the long-lived NS). The light curve morphologies include single and two-plateau features with timescales and luminosities that are in good agreement with Swift observations. Furthermore, we compute the X-ray signal that should precede the SGRB in the time-reversal scenario, the detection of which would represent smoking-gun evidence for this scenario. Finally, we find a bright, highly isotropic EM transient peaking in the X-ray band at ∼102–104 s after the BNS merger with luminosities of L
X ∼ 1046–1048 erg s−1. This signal represents a very promising EM counterpart to the GW emission from BNS mergers.
QUANTUM-STATE DEPENDENCE OF PRODUCT BRANCHING RATIOS IN VACUUM ULTRAVIOLET PHOTODISSOCIATION OF N2
Authors: Song Yu , Gao Hong , Chang Yih Chung , Hammouténe D , Ndome H. , Hochlaf M. , Jackson William M. , Ng C. Y.
Published: February 2016

The branching ratios for the N(4S) + N(2D), N(4S) + N(2P), and N(2D) + N(2D) channels are measured for the photodissociation of

in the vacuum ultraviolet (VUV) region of 100,808–122,159 cm−1 using the VUV–VUV pump-probe approach combined with velocity-map-imaging-photoion detection. No evidence of forming the ground-state N(4S) + N(4S) products is found. No potential barrier is observed for the N(2D) + N(2D) channel, but the N(4S) + N(2P) channel has a small potential barrier of ≈740 cm−1. The branching ratios are found to depend on the symmetry of predissociative N2 states instead of the total VUV excitation energy, indicating that N2 photodissociation is nonstatistical. When the branching ratios for N(4S) + N(2D) and N(4S) + N(2P) products are plotted as a function of the VUV excitation energy for the valence N2
1Πu and

states, oscillations in these ratios are observed demonstrating how these channels are competing with each other. These data can be used to select both the velocity and internal states of the atomic products by picking the quantum state that is excited. High-level ab initio potential energy curves of the excited N2 states are calculated to provide insight into the mechanisms for the observed branching ratios. The calculations predict that the formation of both N(4S) + N(2D) and N(4S) + N(2P) channels involves potential energy barriers, in agreement with experimental observations. A discussion of the application of the present results to astronomy, planetary sciences, and comets is given.
GLOBAL HIGH-RESOLUTION N-BODY SIMULATION OF PLANET FORMATION. I. PLANETESIMAL-DRIVEN MIGRATION
Authors: Kominami J. D. , Daisaka H. , Makino J. , Fujimoto M.
Published: February 2016

We investigated whether outward planetesimal-driven migration (PDM) takes place or not in simulations when the self-gravity of planetesimals is included. We performed N-body simulations of planetesimal disks with a large width (0.7–4 au) that ranges over the ice line. The simulations consisted of two stages. The first-stage simulations were carried out to see the runaway growth phase using the planetesimals of initially the same mass. The runaway growth took place both at the inner edge of the disk and at the region just outside the ice line. This result was utilized for the initial setup of the second-stage simulations, in which the runaway bodies just outside the ice line were replaced by the protoplanets with about the isolation mass. In the second-stage simulations, the outward migration of the protoplanet was followed by the stopping of the migration due to the increase of the random velocity of the planetesimals. Owing to this increase of random velocities, one of the PDM criteria derived in Minton & Levison was broken. In the current simulations, the effect of the gas disk is not considered. It is likely that the gas disk plays an important role in PDM, and we plan to study its effect in future papers.
LATE-TIME PHOTOMETRY OF TYPE IA SUPERNOVA SN 2012cg REVEALS THE RADIOACTIVE DECAY OF 57Co
Authors: Graur Or , Zurek David , Shara Michael M. , Riess Adam G. , Seitenzahl Ivo R. , Rest Armin
Published: February 2016

Seitenzahl et al. have predicted that roughly three years after its explosion, the light we receive from a Type Ia supernova (SN Ia) will come mostly from reprocessing of electrons and X-rays emitted by the radioactive decay chain 57Co → 57Fe, instead of positrons from the decay chain 56Co → 56Fe that dominates the SN light at earlier times. Using the Hubble Space Telescope, we followed the light curve of the SN Ia SN 2012cg out to 1055 days after maximum light. Our measurements are consistent with the light curves predicted by the contribution of energy from the reprocessing of electrons and X-rays emitted by the decay of 57Co, offering evidence that 57Co is produced in SN Ia explosions. However, the data are also consistent with a light echo ∼14 mag fainter than SN 2012cg at peak. Assuming no light-echo contamination, the mass ratio of 57Ni and 56Ni produced by the explosion, a strong constraint on any SN Ia explosion models, is

, roughly twice Solar. In the context of current explosion models, this value favors a progenitor white dwarf with a mass near the Chandrasekhar limit.
THE ABELL 85 BCG: A NUCLEATED, CORELESS GALAXY
Authors: Madrid Juan P. , Donzelli Carlos J.
Published: February 2016

New high-resolution r-band imaging of the brightest cluster galaxy (BCG) in Abell 85 (Holm 15A) was obtained using the Gemini Multi Object Spectrograph. These data were taken with the aim of deriving an accurate surface brightness profile of the BCG of Abell 85, in particular, its central region. The new Gemini data show clear evidence of a previously unreported nuclear emission that is evident as a distinct light excess in the central kiloparsec of the surface brightness profile. We find that the light profile is never flat nor does it present a downward trend toward the center of the galaxy. That is, the new Gemini data show a different physical reality from the featureless, “evacuated core” recently claimed for the Abell 85 BCG. After trying different models, we find that the surface brightness profile of the BCG of Abell 85 is best fit by a double Sérsic model.
MAGNETIC NULL POINTS IN KINETIC SIMULATIONS OF SPACE PLASMAS
Authors: Olshevsky Vyacheslav , Deca Jan , Divin Andrey , Peng Ivy Bo , Markidis Stefano , Innocenti Maria Elena , Cazzola Emanuele , Lapenta Giovanni
Published: February 2016

We present a systematic attempt to study magnetic null points and the associated magnetic energy conversion in kinetic particle-in-cell simulations of various plasma configurations. We address three-dimensional simulations performed with the semi-implicit kinetic electromagnetic code iPic3D in different setups: variations of a Harris current sheet, dipolar and quadrupolar magnetospheres interacting with the solar wind, and a relaxing turbulent configuration with multiple null points. Spiral nulls are more likely created in space plasmas: in all our simulations except lunar magnetic anomaly (LMA) and quadrupolar mini-magnetosphere the number of spiral nulls prevails over the number of radial nulls by a factor of 3–9. We show that often magnetic nulls do not indicate the regions of intensive energy dissipation. Energy dissipation events caused by topological bifurcations at radial nulls are rather rare and short-lived. The so-called X-lines formed by the radial nulls in the Harris current sheet and LMA simulations are rather stable and do not exhibit any energy dissipation. Energy dissipation is more powerful in the vicinity of spiral nulls enclosed by magnetic flux ropes with strong currents at their axes (their cross sections resemble 2D magnetic islands). These null lines reminiscent of Z-pinches efficiently dissipate magnetic energy due to secondary instabilities such as the two-stream or kinking instability, accompanied by changes in magnetic topology. Current enhancements accompanied by spiral nulls may signal magnetic energy conversion sites in the observational data.
INFERRING THE MAGNETOHYDRODYNAMIC STRUCTURE OF SOLAR FLARE SUPRA-ARCADE PLASMAS FROM A DATA-ASSIMILATED FIELD TRANSPORT MODEL
Authors: Scott Roger B. , McKenzie David E. , Longcope Dana W.
Published: February 2016

Supra-arcade fans are highly dynamic structures that form in the region above post-reconnection flare arcades. In these features the plasma density and temperature evolve on the scale of a few seconds, despite the much slower dynamics of the underlying arcade. Further, the motion of supra-arcade plasma plumes appears to be inconsistent with the low-beta conditions that are often assumed to exist in the solar corona. In order to understand the nature of these highly debated structures, it is, therefore, important to investigate the interplay of the magnetic field with the plasma. Here we present a technique for inferring the underlying magnetohydrodynamic processes that might lead to the types of motions seen in supra-arcade structures. Taking as a case study the 2011 October 22 event, we begin with extreme-ultraviolet observations and develop a time-dependent velocity field that is consistent with both continuity and local correlation tracking. We then assimilate this velocity field into a simplified magnetohydrodynamic simulation, which deals simultaneously with regions of high and low signal-to-noise ratio, thereby allowing the magnetic field to evolve self-consistently with the fluid. Ultimately, we extract the missing contributions from the momentum equation in order to estimate the relative strength of the various forcing terms. In this way we are able to make estimates of the plasma beta, as well as predict the spectral character and total power of Alfvén waves radiated from the supra-arcade region.
PROPERTIES OF THE FAST FORWARD SHOCK DRIVEN BY THE 2012 JULY 23 EXTREME CORONAL MASS EJECTION
Authors: Riley Pete , Caplan Ronald M. , Giacalone Joe , Lario David , Liu Ying
Published: February 2016

Late on 2012 July 23, the STEREO-A spacecraft encountered a fast forward shock driven by a coronal mass ejection (CME) launched from the Sun earlier that same day. The estimated travel time of the disturbance (∼20 hr), together with the massive magnetic field strengths measured within the ejecta (>100 nT), made it one of the most extreme events observed during the space era. In this study, we examine the properties of the shock wave. Because of an instrument malfunction, plasma measurements during the interval surrounding the CME were limited, and our approach has been modified to capitalize on the available measurements and suitable proxies, where possible. We were able to infer the following properties. First, the shock normal was pointing predominantly in the radial direction (

). Second, the angle between

and the upstream magnetic field, θ
Bn, was estimated to be ≈34°, making the shock “quasi-parallel,” and supporting the idea of an earlier “preconditioning” ICME. Third, the shock speed was estimated to be ≈3300 km s−1. Fourth, the sonic Mach number, M

s
, for this shock was ∼28. We support these results with an idealized numerical simulation of the ICME. Finally, we estimated the change in ram pressure upstream of the shock to be ∼5 times larger than the pressure from the energetic particles, suggesting that this cosmic-ray modified shock had not reached steady-state, but instead, had been caught in an early, transient phase in its evolution.
A PAIR OF GIANT PLANETS AROUND THE EVOLVED INTERMEDIATE-MASS STAR HD 47366: MULTIPLE CIRCULAR ORBITS OR A MUTUALLY RETROGRADE CONFIGURATION
Authors: Sato Bun’ei , Wang Liang , Liu Yu-Juan , Zhao Gang , Omiya Masashi , Harakawa Hiroki , Nagasawa Makiko , Wittenmyer Robert A. , Butler Paul , Song Nan , He Wei , Zhao Fei , Kambe Eiji , Noguchi Kunio , Ando Hiroyasu , Izumiura Hideyuki , Okada Norio , Yoshida Michitoshi , Takeda Yoichi , Itoh Yoichi , Kokubo Eiichiro , Ida Shigeru
Published: February 2016

We report the detection of a double planetary system around the evolved intermediate-mass star HD 47366 from precise radial-velocity measurements at the Okayama Astrophysical Observatory, Xinglong Station, and Australian Astronomical Observatory. The star is a K1 giant with a mass of 1.81 ± 0.13 M
⊙, a radius of 7.30 ± 0.33 R
⊙, and solar metallicity. The planetary system is composed of two giant planets with minimum masses of

and

, orbital periods of

days and

days, and eccentricities of

and

, respectively, which are derived by a double Keplerian orbital fit to the radial-velocity data. The system adds to the population of multi-giant-planet systems with relatively small orbital separations, which are preferentially found around evolved intermediate-mass stars. Dynamical stability analysis for the system revealed, however, that the best-fit orbits are unstable in the case of a prograde configuration. The system could be stable if the planets were in 2:1 mean-motion resonance, but this is less likely, considering the observed period ratio and eccentricity. A present possible scenario for the system is that both of the planets have nearly circular orbits, namely the eccentricity of the outer planet is less than ∼0.15, which is just within 1.4σ of the best-fit value, or the planets are in a mutually retrograde configuration with a mutual orbital inclination larger than 160°.
SYNCHROTRON HEATING BY A FAST RADIO BURST IN A SELF-ABSORBED SYNCHROTRON NEBULA AND ITS OBSERVATIONAL SIGNATURE
Authors: Yang Yuan-Pei , Zhang Bing , Dai Zi-Gao
Published: February 2016

Fast radio bursts (FRBs) are mysterious transient sources. If extragalactic, as suggested by their relative large dispersion measures, their brightness temperatures must be extremely high. Some FRB models (e.g., young pulsar model, magnetar giant flare model, or supra-massive neutron star collapse model) suggest that they may be associated with a synchrotron nebula. Here we study a synchrotron-heating process by an FRB in a self-absorbed synchrotron nebula. If the FRB frequency is below the synchrotron self-absorption frequency of the nebula, electrons in the nebula would absorb FRB photons, leading to a harder electron spectrum and enhanced self-absorbed synchrotron emission. In the meantime, the FRB flux is absorbed by the nebula electrons. We calculate the spectra of FRB-heated synchrotron nebulae, and show that the nebula spectra would show a significant hump in several decades near the self-absorption frequency. Identifying such a spectral feature would reveal an embedded FRB in a synchrotron nebula.
Evaluation of Maternal Complications in Severe Preeclampsia in a University Hospital in Tirana
Authors: Ndoni Eriseida , Hoxhallari Redi , Bimbashi Astrit
Published: February 2016

BACKGROUND: Preeclampsia is a hypertensive multisystem disorder of pregnancy that complicates up to 10% of pregnancies worldwide and is one of the leading causes of maternal and perinatal morbidity and mortality.AIM: To evaluate maternal complications associated with severe preeclampsia.METHODS: This is a retrospective cross-sectional study conducted in the UHOG â€œKoÃ§o Gliozheniâ€, in Tirana. Primary outcomes evaluated: maternal death, eclampsia, stroke, HELLP syndrome, and pulmonary edema. Secondary outcomes: renal failure, admission in ICU, caesarean section, placental abruption, and postpartum hemorrhage. Fisherâ€™s exact test and Chi-squared test were used as statistical methods. RESULTS: In women with severe preeclampsia we found higher rates of complications comparing to the group with preeclampsia. Eclampsia (1.5% vs. 7.1%, P < 0.001), HELLP syndrome (2.4% vs. 11.0%; P < 0.001), stroke (0.5% vs 1.9%, P = 0.105) pulmonary edema (0.25% vs. 1.3%, P = 0.0035), renal failure (0.9% vs. 2.6%, P = 0.107), admission in ICU (19.5% vs. 71.4%, P = 0.007), caesarean section rates (55.5% vs. 77%, P = 0.508), placental abruption (4.3% vs. 7.8%, P = 0.103) and severe postpartum hemorrhage (3.2% vs. 3.9%, P = 0.628). CONCLUSION: Severe preeclampsia is associated with high rates of maternal severe morbidity and early diagnosis and timely intervention can prevent life treating complications.
De la pseudo-médiation de l’alcool aux médiations thérapeutiques
Authors: Marchin Élodie , Gaudriault Pierre
Published: February 2016

Les auteurs questionnent l’objet alcool utilisé parfois comme une pseudo-médiation en opposition à la médiation thérapeutique classique. Là où la médiation thérapeutique est basée sur la création d’un espace transitionnel winnicottien permettant certes une sédation de l’angoisse mais aussi autorisant un remaniement psychique selon la théorisation de McDougall, la pseudo-médiation de l’alcool permet de faire face à l’angoisse mobilisée par des émergences pulsionnelles dans l’immédiateté de son apparition mais sans élaboration particulière. À partir d’exemples tirés de la clinique des ateliers de groupe et également de thérapies individuelles, les auteurs s’interrogent sur les mécanismes psychiques en jeu quand la substitution de l’alcool par un objet médiateur commence à s’opérer. Ils font ainsi l’hypothèse que l’activité médiatrice matérialisée par des objets permettrait de prendre de la distance par rapport à la pseudo-médiation de l’alcool, en particulier par son effet d’étayage des représentations.
L’œil entend, l’oreille voit : redécouvrir la sensorialité des mots
Authors: Méry Janine
Published: February 2016

L’auteure a créé, dans l’association socioculturelle qui l’a accueillie, des groupes de lecture plurielle où elle a pu utiliser ses compétences de psychanalyste et de psychopédagogue. Elle a été face à une population en majorité de femmes, entrées dans la période du vieillissement. À travers un exemple clinique, l’auteure montre comment elle est parvenue à mobiliser et stimuler les capacités psychiques et mentales des participantes en leur proposant des jeux induisant les liaisons sensorialité/intellect. Cette expérience vécue a créé dans le groupe un climat de confiance favorisant l’association libre demandée ensuite aux participantes sur un texte qui leur est lu à haute voix, ce qui est le propre des lectures plurielles.
Accueillir, un embarras nécessaire
Authors: Matha Catherine
Published: February 2016

Le texte de Ferenczi ouvre un jeu de résonances à la notion d’accueil dans la rencontre analytique. À partir d’une situation clinique, l’hypothèse formulée est celle de l’intérêt pour le patient de passer d’une expérience du désaveu à celle de l’embarras. La valeur de l’embarras est reconnue dans les deux positions transférentielles où chacun doit pouvoir supporter le double mouvement d’être un embarras pour l’autre ou d’être embarrassé par l’autre ; la capacité de faire avec l’embarras constituant la promesse de retrouvailles avec une dimension essentielle du vivre.
Les deux espèces de haine dans « L’enfant mal accueilli et sa pulsion de mort »
Authors: Neau Françoise
Published: February 2016

Ce petit texte, aux enjeux cliniques et théoriques majeurs, recèle deux espèces de haine à l’œuvre pour l’enfant mal accueilli qui se présente dans certaines cures d’adultes. La haine maternelle, aux accents winnicottiens, active et actualise la pulsion de mort de l’enfant – pulsion de sa propre mort, parfois jusqu’à la disparition de l’enfant. Seul le pardon obtenu de ses parents pour l’inconvénient d’être né permettra à l’enfant mal accueilli de lier la haine maternelle par l’amour enfantin.
De l’inaudible à l’inouï
Authors: Bourgain Anne
Published: February 2016

Convoquant différentes scènes d’héritage, ces variations cliniques autour d’un texte important de Ferenczi entendent réouvrir, à la lumière des pratiques actuelles, les redoutables questions qui divisent encore la communauté analytique : traumatisme, fantasme, pulsion de mort. Il nous faut déplier patiemment ce texte pour en entendre les résonances actuelles : aux limites de l’analysable, il s’agit parfois d’attendre de façon active pour pouvoir entendre sinon l’inaudible, du moins l’inouï.
Quand l’accueil se fait écueil dans la psyché maternelle
Authors: Barouh-Cohen Stéphanie
Published: February 2016

La manière dont Ferenczi traite de la destructivité en lien avec le caractère traumatogène de l’environnement est très présente dans son approche de la pulsion de mort. Ses considérations, très empreintes de son autoanalyse et de l’analyse de la dynamique transféro-contre-transférentielle, nous amènent ici à penser que le traitement des enfants « mal accueillis » passe par un travail sur la négativité du lien. Nous l’aborderons du côté d’un écueil dans la psyché maternelle, à partir du cas d’une jeune patiente anorexique.
La pulsion de mort au fondement de la subjectivité ?
Authors: Arbisio Christine
Published: February 2016

Pour Ferenczi, l’enfant mal accueilli risque de développer une autodestructivité qu’il associe à la pulsion de mort. Alors que Freud propose une théorisation métapsychologique des pulsions de vie et de mort, Lacan considère la pulsion de mort comme la vraie pulsion, celle qui est constitutive du sujet. Il s’agit pour lui d’une nécessité clinique, qui a des conséquences pour la pratique de l’analyste.
Autorisé à vivre ?
Authors: Gaillard Georges
Published: February 2016

L’accent va être porté sur les temps premiers de la rencontre entre l’infans et l’autre maternel, et sur le nouage entre les forces d’Éros et celles de Thanatos. Ce nouage a en effet un impact essentiel sur la manière dont un sujet sera/ne sera pas en mesure de s’approprier son existence. Ce travail d’appropriation subjective est en effet corrélé à ce que le sujet peut éprouver dans l’ordre du don , ou de ce qui se présente à lui sous le mode de l’emprise et/ou du « rejet-refus » et de l’abandon. Quelques brèves évocations cliniques permettront de donner de la chair à ces dynamiques fondatrices.
Un petit pas hors de l’hypnose collective...
Authors: Daubigny Corinne
Published: February 2016

Ferenczi s’est détaché d’une part importante du modèle freudien concernant la genèse de la vie psychique, la cure et la formation des psychanalystes. Il a impulsé un mouvement qui reste une source d’avancées théoriques et techniques multiples dans le champ de la clinique des traumas, des situations extrêmes et des psychoses.
Se souvenir de soi
Authors: Grenier Louise
Published: February 2016

Comment retrouver la mémoire de son désir ? Comment retrouver la mémoire de ce qu’on a été, après un événement traumatique ? Je situerai ma question dans l’intervalle qui se creuse entre une mémoire fragmentée de soi, celle d’un sujet absent, et une mémoire revisitée par le transfert, celle d’un sujet retrouvé par son désir. D’où l’importance pour l’analyste de rester à l’écoute non seulement de ce qui s’énonce autour du trauma mais de (se) reconnaître dans « cette ombre de l’objet perdu » qui précède son analysant.
« My name is Sigmund Freud » Freud, le nom et l’identité
Authors: Kamieniak Jean-Pierre
Published: February 2016

Si l’intérêt précoce de Freud pour le nom et la nomination lui a permis d’élaborer ce savoir sur le nom dont nous lui sommes désormais redevables, c’est parce qu’il s’est soutenu d’une interrogation pour le moins discrète sur le sien propre, à l’égard duquel il a pu témoigner de mouvements ambigus, si ce n’est ambivalents, qu’il lui a fallu élaborer pour se l’approprier et le revendiquer. Aussi est-ce ce cheminement qui se voit restitué ici.
Entrepreneurs adventistes à Madagascar
Authors: Ratsimbazafy Claudine , Ranaivoarisoa Lucien
Published: February 2016

Une étude effectuée auprès de 40 entrepreneurs de confession adventiste a permis d’analyser l’influence de la religion sur leur comportement en affaires. Si les fondements de la religion encouragent l’entrepreneuriat, l’intention et les motivations d’entreprendre ne sont pas toujours les mêmes. Comment la religion et l’entrepreneuriat interagissent-ils ? Les hypothèses de recherche s’articulent autour de l’attitude envers la création d’entreprise, du degré d’implication dans les activités de l’église adventiste, des normes sociales perçues et du contrôle des ressources de l’entreprise.
Un renard pris au piège de son temps ? René Worms et les questions de population
Authors: Cahen Fabrice
Published: February 2016

René Worms se confronte dans les années 1910 à l’étude des phénomènes de population en publiant La sexualité dans les naissances françaises (1912), consacré au rapport numérique des sexes, puis Natalité et régime successoral (1917), contribution au débat sur les conséquences des règles successorales sur la « dépopulation » de la France. R. Worms s’y situe dans la lignée de spécialistes reconnus de la démographie (en particulier Émile Levasseur) tout en cherchant, non sans risque, à tenir compte des avancées des sciences biologiques. Ces deux ouvrages éclairent la manière dont un sociologue de la Belle époque peut concevoir la relation entre volonté individuelle, phénomènes sociaux et action publique. Si La sexualité dans les naissances françaises est le fruit d’investigations empiriques consciencieuses et d’une exploration relativement inventive des liens entre biologie, politique et société, Natalité et régime successoral témoigne d’une moindre originalité, montrant un R. Worms plus soucieux de proclamer son adhésion au patriotisme du moment que de produire une recherche rigoureuse.
René Worms et l’économie politique
Authors: Papilloud Christian
Published: February 2016

Pour René Worms, l’économie politique se rattache aux sciences sociales et apprend à l’homme les règles du bien, du juste et de l’utile. Science et art des richesses, l’économie politique mène à la sociologie avec laquelle elle partage son objet d’investigation principal, la division du travail fondé sur le principe de la coopération solidaire des acteurs sociaux. Originellement influencé par son père, Émile Worms, et les économistes libéraux, R. Worms évoluera vers une conception de l’économie politique sociale proche de celle de Charles Gide. Cette double influence se reflète au sein du réseau que R. Worms mobilise autour de son Institut international de sociologie.
Il était une fois... « kabalat panim » à la cartoucherie..., une visitation par l’art ?
Authors: Ankaoua Fabienne
Published: February 2016

L’« En-je » d’une représentation scénique nous renvoie à la philosophique éthique du sujet d’Emmanuel Levinas, celle du visage, sur la relation du sujet à autrui. Cette responsabilité pour l’autre semble décrire de manière adéquate le processus de ce qui se révèle alors, pour des jeunes juifs, arabes, issus des quartiers défavorisés de Jérusalem, qui ont su, sous l’égide de Beit Ham, venir incarner au travers de l’expérience de la danse. Être envisagé, sur scène, par l’autre, un autre différent, qui par sa simple existence réveille « la marque traumatique », m’oblige à être à la fois hôte et otage de celui-ci. Derrière ce tumulte adolescent, c’est « l’existence supérieure de l’homme », tel que le décrit Maeterlinck, qui se fait voir, dans un temps ouvert, anachronique.
Ce qui ne guérit pas meurt un jour
Authors: Heyer Éric , Timbeau Xavier
Published: February 2016

La dynamique de croissance mondiale entrevue au printemps 2015 se confirme avec une consolidation de la reprise dans les pays industrialisés et, en particulier, une accélération du rythme de croissance dans la zone euro qui devrait s’établir à 1,5 % en 2015 puis 1,8 % en 2016-2017 contre 0,9 % en 2014. Les facteurs qui ont soutenu la croissance depuis la fin de l’année 2014 restent favorables (prix du pétrole, taux de change et politique monétaire) et les politiques budgétaires sont globalement moins restrictives. Alors que les pays émergents avaient bien résisté à la crise de 2008-2009 et au ralentissement du commerce mondial, ils sont aujourd’hui exposés à la baisse des prix des matières premières, à l’instabilité provoquée par la sortie de politiques monétaires très expansives et à la mutation du régime de croissance de l’économie chinoise. Si les économies émergentes d’Asie seront les plus touchées par le ralentissement de la première puissance commerciale, les pays développés en subiront aussi les effets négatifs via un ralentissement de leur demande extérieure. Ce choc négatif entraînera un découplage de la croissance avec un ralentissement des pays en développement (3,2 % de croissance en 2015 contre une moyenne de 4,6 % sur la période 2012-2014) et une accélération de la croissance des pays avancés (1,9 % de croissance en 2015 contre 1,2 % sur la période 2012-2014). Le retour de la croissance dans les pays développés ne doit pas cependant masquer la fragilité du scénario de reprise qui s’appuie en partie sur des facteurs volatils et qui reste freiné par la poursuite du désendettement privé et la volonté de réduire à tout prix l’endettement public. La reprise aura besoin d’un autre carburant que la baisse du prix du pétrole pour être auto-entretenue. À la vieille de la COP21, le monde ne manque pas d’opportunités d’investissements rentables socialement. Peut-être jamais dans l’histoire des économies développées un tel retard d’investissement n’aura été aussi manifeste, alimentant le risque de rester prisonnier du piège de la stagnation séculaire.
France : retour sur désinvestissement
Authors: Plane Mathieu , Ducoudré Bruno , Madec Pierre , Péléraux Hervé , Sampognaro Raul
Published: February 2016

Après une croissance décevante en 2014 (+0,2 %), l’économie française s’engage dans une reprise lente, sa capacité de rebond à court terme étant entravée par un tissu productif dégradé par plusieurs années de désinvestissement. L’inertie des anticipations, les surcapacités existantes, la crise immobilière, le ralentissement chinois et la consolidation budgétaire, bien que moins aiguë que par le passé, limitent la reprise en 2015. Sur l’ensemble de l’année, la France enregistrerait une hausse du PIB de 1,1 %, le taux de chômage se stabiliserait à 10 % et le déficit public continuerait sa lente décrue, atteignant 3,7 % du PIB. Avec une croissance de 1,8 %, 2016 serait l’année de la reprise, marquée par une hausse du taux d’investissement des entreprises, stimulé par l’amélioration du taux de marge, le très bas niveau du coût du capital et le redressement des perspectives d’activité. Après quatre années de contraction, l’investissement en logement repartirait, sous l’effet de l’amélioration des perspectives de mises en chantier. Sous l’effet de la dépréciation de l’euro et des politiques de compétitivité adoptées par le gouvernement, le commerce extérieur contribuerait positivement à la croissance (0,2 point de PIB en 2016, comme en 2015). Le rythme de croissance trimestriel du PIB, compris entre 0,5 et 0,6 %, déclencherait la fermeture progressive de l’écart de production et la lente baisse du taux de chômage qui finirait l’année à 9,8 %. Le déficit public se réduirait de 0,5 point de PIB, sous l’effet des économies réalisées et de la remontée des recettes fiscales générées par la reprise de l’activité. Sous l’hypothèse d’un environnement macroéconomique durablement favorable, la fermeture de l’écart de production se poursuivrait en 2017 et le taux de chômage atteindrait 9,4 % à la fin de l’année. Avec une hausse du PIB de 2 % en 2017, le déficit public descendrait à 2,7 % du PIB, repassant sous la barre des 3 % pour la première fois depuis 10 ans.