bluuebunny/crossref_metadata_2025_split huggingface dataset:
Early Observations of the Type Ia Supernova iPTF 16abc: A Case of Interaction with Nearby, Unbound Material and/or Strong Ejecta Mixing
Authors: Miller A. A. , Cao Y. , Piro A. L. , Blagorodnova N. , Bue B. D. , Cenko S. B. , Dhawan S. , Ferretti R. , Fox O. D. , Fremling C. , Goobar A. , Howell D. A. , Hosseinzadeh G. , Kasliwal M. M. , Laher R. R. , Lunnan R. , Masci F. J. , McCully C. , Nugent P. E. , Sollerman J. , Taddia F. , Kulkarni S. R. 
Published: January 2018

Abstract
Early observations of Type Ia supernovae (SNe Ia) provide a unique probe of their progenitor systems and explosion physics. Here we report the intermediate Palomar Transient Factory (iPTF) discovery of an extraordinarily young SN Ia, iPTF 16abc. By fitting a power law to our early light curve, we infer that first light for the SN, that is, when the SN could have first been detected by our survey, occurred only

days before our first detection. In the ∼24 hr after discovery, iPTF 16abc rose by ∼2 mag, featuring a near-linear rise in flux for

days. Early spectra show strong C ii absorption, which disappears after ∼7 days. Unlike the extensively observed Type Ia SN 2011fe, the

colors of iPTF 16abc are blue and nearly constant in the days after explosion. We show that our early observations of iPTF 16abc cannot be explained by either SN shock breakout and the associated, subsequent cooling or the SN ejecta colliding with a stellar companion. Instead, we argue that the early characteristics of iPTF 16abc, including (i) the rapid, near-linear rise, (ii) the nonevolving blue colors, and (iii) the strong C ii absorption, are the result of either ejecta interaction with nearby, unbound material or vigorous mixing of radioactive 56Ni in the SN ejecta, or a combination of the two. In the next few years, dozens of very young normal SNe Ia will be discovered, and observations similar to those presented here will constrain the white dwarf explosion mechanism.
Jean Claude Rouchy et son œuvre : quelques jalons d’une théorisation dans le champ de la clinique psychanalytique du sujet, des groupes, des institutions et de la culture
Authors: Pinel Jean-Pierre 
Published: January 2018

Cet article présente, de manière synthétique, le parcours de Jean Claude Rouchy, analyste de sujet, de groupe et d’institution, pionnier dans le champ de la psychosociologie comme dans celui de la clinique des ensembles intersubjectifs et de l’interculturalité, qui a toujours articulé investissement clinique et recherche, engagement associatif et activités éditoriales. Le propos se poursuit, dans une deuxième partie, en dégageant quelques concepts et principes méthodologiques essentiels que nous lui devons. Il aborde notamment les concepts de groupe d’appartenance et d’incorporat et présente les dispositifs d’intervention et d’analyse d’institution établis par J.C. Rouchy. Il se clôt par une exploration du concept de dispositif et esquisse quelques prolongements ouverts par ses travaux.
Interventions et supervisions institutionnelles en échec
Authors: Pinel Jean-Pierre 
Published: January 2018

Une revue de la littérature met en évidence que la question de l’échec est relativement marginalisée dans le champ de la clinique psychanalytique et plus encore dans celui de la clinique des interventions et supervisions institutionnelles. L’article se propose d’en ressaisir les raisons. Il propose l’hypothèse centrale selon laquelle l’échec constitue une forme princeps de négativité et, partant, se voit contre-investi, notamment en une période culturelle privilégiant la réussite et l’excellence. En appui sur différentes configurations cliniques issues d’interventions institutionnelles conduites dans des institutions soignantes, l’article montre que différentes modalités de négativité se logent dans ce qui est recouvert par le terme englobant d’« échec ». L’échec prenant ainsi, dans la clinique, les significations extrêmement différentes de symptôme, de moment transitionnel ou enfin de situation d’anéantissement.
Un échec de toute première catégorie
Authors: Combase Catherine 
Published: January 2018

Ce texte reprend l’histoire contée par l’écrivain et psychothétapeute Irvin Yalom dans La méthode Shopenhauer (2005). Alors qu’il est atteint d’un cancer incurable, un célèbre psychiatre américain compulse ses dossiers, trente ans de carrière – a-t-il vraiment aidé ses patients ? –, et tombe sur un « échec de toute première catégorie » vécu il y a vingt-cinq ans avec un type froid, manipulateur, asocial, prédateur sexuel, beau mais antipathique, avec lequel il s’était investi à fond pendant trois ans sans pouvoir constater la moindre avancée. Ce patient avait brutalement interrompu la thérapie en expliquant qu’il n’en avait rien tiré. Il décide de le retrouver. Leur deuxième rencontre donne lieu à un véritable thriller. Le thérapeute est cette fois demandeur et le cynique patient compte bien en profiter : il veut devenir thérapeute sans autre motivation que de gagner sa vie...
The Raam regional soil moisture monitoring network in the Netherlands
Authors: Benninga Harm-Jan F. , Carranza Coleen D. U. , Pezij Michiel , van Santen Pim , van der Ploeg Martine J. , Augustijn Denie C. M. , van der Velde Rogier 
Published: January 2018

Abstract. We have established a soil moisture profile monitoring network in the Raam region in the Netherlands. This region faces water shortages during summers and excess of water during winters and after extreme precipitation events. Water management can benefit from reliable information on the soil water availability and water storing capacity in the unsaturated zone. In situ measurements provide a direct source of information on which water managers can base their decisions. Moreover, these measurements are commonly used as a reference for the calibration and validation of soil moisture content products derived from earth observations or obtained by model simulations. Distributed over the Raam region, we have equipped 14 agricultural fields and 1 natural grass field with soil moisture and soil temperature monitoring instrumentation, consisting of Decagon 5TM sensors installed at depths of 5, 10, 20, 40 and 80 cm. In total, 12 stations are located within the Raam catchment (catchment area of 223 km2), and 5 of these stations are located within the closed sub-catchment Hooge Raam (catchment area of 41 km2). Soil-specific calibration functions that have been developed for the 5TM sensors under laboratory conditions lead to an accuracy of 0.02 m3 m−3. The first set of measurements has been retrieved for the period 5 April 2016–4 April 2017. In this paper, we describe the Raam monitoring network and instrumentation, the soil-specific calibration of the sensors, the first year of measurements, and additional measurements (soil temperature, phreatic groundwater levels and meteorological data) and information (elevation, soil physical characteristics, land cover and a geohydrological model) available for performing scientific research. The data are available at https://doi.org/10.4121/uuid:dc364e97-d44a-403f-82a7-121902deeb56.
Factores de motivación para alcanzar la graduación en los estudiantes de la Carrera de Filología y Comunicación de la Universidad Nacional Autónoma de Nicaragua, Managua en el periodo 2014-2015
Authors: Prado Cuarezma Milán 
Published: January 2018

El presente trabajo de investigación tiene como objetivo analizar los factores de motivación para alcanzar la graduación en los estudiantes de la carrera de Filología y Comunicación de la UNAN Managua durante el periodo de 2014 – 2015. El enfoque utilizado es el constructivista con base a la descripción de los factores de motivación interna y motivación externa relacionados con la toma de decisión por la modalidad de graduación elegida para titularse de la carrera de Filología y Comunicación en la UNAN-Managua, al igual que el grado de asociación de las metas vinculadas a la investigación, la autovaloración personal, el reconocimiento social y la obtención de recompensas externas respecto a la motivación para conseguir tal fin. La recolección de la información se realizó mediante las técnicas del grupo focal, dirigidas a estudiantes involucrados en dicho proceso, de igual manera, se aplicó una encuesta estructurada que determinó asociación entre la motivación interna y motivación externa con el logro por licenciarse en Filología y Comunicación. Entre los principales hallazgos encontrados se tiene que, las metas relacionadas con la consecución de recompensa externa, los estudiantes de la carrera de Filología y Comunicación persiguen específicamente: Ayudar económicamente a sus familias, conseguir cualquier empleo rápidamente, y porque quieren llevar un nivel de vida cómoda posterior a graduarse, lo que sugiere que en comparación con las metas derivadas de la Motivación interna, tienen mayor peso aquellas que ocasionan algún tipo de recompensa proveniente del entorno social y laboral.
Impact of Climate Change on Siberian High and Wintertime Air Pollution in China in Past Two Decades
Authors: Zhao Shuyu , Feng Tian , Tie Xuexi , Long Xin , Li Guohui , Cao Junji , Zhou Weijian , An Zhisheng 
Published: January 2018

AbstractChina has suffered severe air pollutions during wintertime as national industrialization and urbanization have been increasingly developed in the past decades. Recent studies suggest that climate change has important impacts on extreme haze events in northern China. This study uses reanalysis datasets to analyze the trend and variability of Siberian High (SiH) intensity, and its relationship with the Arctic temperature and sea ice cover (SIC) in past two decades. The results show that Arctic is warming accompanied by a rapid decline of SIC, while Eurasia is cooling and SiH intensity is gradually enhancing. The statistics illustrates that the SiH has a significantly positive correlation to the temperature (R = 0.70), and a significant anticorrelation to the SIC (R = −0.69), and this is because the warming Arctic and the reducing SIC enhanced the SiH. The enhanced SiH leads to strengthened northerly winds in the North China Plain (NCP). The WRF‐Chem model calculation reveals the strengthened northerly winds during the stronger SiH period in January 2016 produce a significant decrease in PM2.5 (particulate matter with aerodynamic diameter less than 2.5 µm) concentrations by 100–200 µg m−3 than that during the weaker one in January 2013. A sensitivity calculation figures out the reduction of PM2.5 concentrations due to a decrease of 50% in emissions is comparable to changes from the weak SiH condition to the strong SiH condition, suggesting that extreme climate variability in the past few years could have an equivalent impact as a consequence of a large emission reduction on wintertime air pollution in the NCP.
Catalog of Offshore Seismicity in Cascadia: Insights Into the Regional Distribution of Microseismicity and its Relation to Subduction Processes
Authors: Stone Ian , Vidale John E. , Han Shuoshuo , Roland Emily 
Published: January 2018

AbstractWe present a catalog of offshore seismicity generated from Cascadia Initiative (CI) ocean‐bottom seismometer data. Earthquakes were detected within the CI data using a short‐time‐average/long‐time‐average trigger and located using 1‐D velocity models developed from seismic reflection/refraction surveys. The catalog, which contains 271 earthquakes with magnitude 0.4–4.0 along the coasts of Vancouver Island, Washington, Oregon, and Northern California, spans all 4 years of the ocean bottom seismometer deployment and shows distinct along‐strike variations in seismicity consistent with structural observations from recent active source seismic reflection/refraction studies. Seismicity is sparse off Vancouver Island and Washington (49°N–46°N) but increases off northern and central Oregon, corresponding to a roughened, more deformed subducting slab. Widespread earthquakes are observed at near‐interface depths between 46°N and 45°N, though an increase in underthrust sediment thickness between 45°N and 43°N likely restricts seismicity to scattered asperities on the plate interface. South of 43°N, where both the overriding and subducting plates are severely deformed approaching the Mendocino triple junction, seismicity is abundant. We locate an additional 440 events in the Juan de Fuca plate seaward of the deformation front. The higher seismicity south of 46°N is consistent with more extensive intraplate deformation. Along with the complex stress field induced by the Mendocino triple junction, our observations imply that the smoothness and degree of hydration of the incoming plate, which are linked to the amount of underthrust sediment and extent of intraplate deformation, are major contributing factors to the distribution of microseismicity in the Cascadia subduction zone.
MicroRNA profiling during directed differentiation of cortical interneurons from human‐induced pluripotent stem cells
Authors: Tu Jiajie , Cao Dandan , Li Lu , Cheung Hoi‐Hung , Chan Wai‐Yee 
Published: January 2018

Induced pluripotent stem cells (iPSCs) are useful for modeling neuron development and related diseases. Cortical interneurons are essential players in neuropsychiatric diseases such as autism. miRNAs are a class of pivotal regulators in neural differentiation. Using a previously established model of cortical interneuron differentiation from human embryonic stem cells, we profiled miRNAs involved in differentiation from human iPSCs. A number of miRNAs were modulated in the differentiation process. This study captured the temporal in vitro neurogenesis from iPSCs to mature cortical interneurons. The specific miRNAs identified at each stage of differentiation are of potential use for drug discovery and prospective clinical applications.
Phase Inversion Strategy to Fabricate Porous Carbon for Li‐S Batteries via Block Copolymer Self‐Assembly
Authors: Choudhury Soumyadip , Fischer Dieter , Formanek Petr , Stamm Manfred , Ionov Leonid 
Published: January 2018

AbstractIn this paper, an easy, facile way of preparing porous carbon cathode for lithium–sulfur batteries with superior cycle stability is demonstrated. The highly porous cathode is fabricated by using self‐assembled nanostructured block copolymer as template. The block copolymer template is formed via phase inversion route followed by filling the empty spaces by oligomeric phenolic resin, thermopolymerization of the resin, and finally by carbonization. Semi‐gelled film of self‐assembled block copolymer is immersed in solution of nonsolvent mixture. After washing away of low molecular additive, a highly porous mat is generated. After successful filling with carbon precursor inside the template, crosslinking and carbonization under inert atmosphere result in a highly porous carbon material, which is further hybridized with sulfur via melt diffusion of elemental sulfur. This new fabrication route of template formation by phase inversion requires no solvent/thermal annealing step to generate nanostructure aided by block copolymer. The cathode material shows excellent cycle stability over 240 charging–discharging cycles, rate handling over 100 cycles.
Mussel‐Inspired Polymer‐Based Universal Spray Coating for Surface Modification: Fast Fabrication of Antibacterial and Superhydrophobic Surface Coatings
Authors: Schlaich Christoph , Li Mingjun , Cheng Chong , Donskyi Ievgen S. , Yu Leixiao , Song Geonho , Osorio Ernesto , Wei Qiang , Haag Rainer 
Published: January 2018

AbstractAlthough mussel‐inspired surface chemistry is one of the most utilized strategies for surface functionalization, its practical and/or industrial applications are rather limited, because dip coating can only treat small surface areas and is dependent on the coating vessel. Herein a mussel‐inspired, polymer‐based, multifunctional, and substrate‐independent spray coating strategy for surface modification under extremely mild conditions using mussel‐inspired polyglycerol is described. The postfunctionalization of the obtained surface via spray coating with silver nanoparticles results in a nanoparticle embedded coating with excellent, long‐term antibacterial properties. Furthermore, a simple method for preparing a superhydrophobic, highly water‐repellent coating by coformulation of the mussel‐inspired spray coating with hydrophobic nanoparticles is presented.
Highly Efficient Ambient Temperature CO2 Photomethanation Catalyzed by Nanostructured RuO2 on Silicon Photonic Crystal Support
Authors: Ali Feysal M. , Ghuman Kulbir K. , O'Brien Paul G. , Hmadeh Mohamad , Sandhel Amit , Perovic Doug D. , Singh Chandra Veer , Mims Charles A. , Ozin Geoffrey A. 
Published: January 2018

AbstractSunlight‐driven catalytic hydrogenation of CO2 is an important reaction that generates useful chemicals and fuels and if operated at industrial scales can decrease greenhouse gas CO2 emissions into the atmosphere. In this work, the photomethanation of CO2 over highly dispersed nanostructured RuO2 catalysts on 3D silicon photonic crystal supports, achieving impressive conversion rates as high as 4.4 mmol gcat−1 h−1 at ambient temperatures under high‐intensity solar simulated irradiation, is reported. This performance is an order of magnitude greater than photomethanation rates achieved over control samples made of nanostructured RuO2 on silicon wafers. The high absorption and unique light‐harvesting properties of the silicon photonic crystal across the entire solar spectral wavelength range coupled with its large surface area are proposed to be responsible for the high methanation rates of the RuO2 photocatalyst. A density functional theory study on the reaction of CO2 with H2 revealed that H2 splits on the surface of the RuO2 to form hydroxyl groups that participate in the overall photomethanation process.
Material Discovery and Design Principles for Stable, High Activity Perovskite Cathodes for Solid Oxide Fuel Cells
Authors: Jacobs Ryan , Mayeshiba Tam , Booske John , Morgan Dane 
Published: January 2018

AbstractCritical to the development of improved solid oxide fuel cell (SOFC) technology are novel compounds with high oxygen reduction reaction (ORR) catalytic activity and robust stability under cathode operating conditions. Approximately 2145 distinct perovskite compositions are screened for potential use as high activity, stable SOFC cathodes, and it is verified that the screening methodology qualitatively reproduces the experimental activity, stability, and conduction properties of well‐studied cathode materials. The calculated oxygen p‐band center is used as a first principle‐based descriptor of the surface exchange coefficient (k*), which in turn correlates with cathode ORR activity. Convex hull analysis is used under operating conditions in the presence of oxygen, hydrogen, and water vapor to determine thermodynamic stability. This search has yielded 52 potential cathode materials with good predicted stability in typical SOFC operating conditions and predicted k* on par with leading ORR perovskite catalysts. The established trends in predicted k* and stability are used to suggest methods of improving the performance of known promising compounds. The material design strategies and new materials discovered in the computational search help enable the development of high activity, stable compounds for use in future solid oxide fuel cells and related applications.
Housing First and Photovoice: Transforming Lives, Communities, and Systems
Authors: Pruitt Anna S. , Barile John P. , Ogawa Terry Yasuko , Peralta Nelson , Bugg Reumell , Lau John , Lamberton Thomas , Hall Corazon , Mori Victor 
Published: January 2018

HighlightsPresents Housing First outcomes as identified by program participants.Demonstrates multilevel impacts of a Photovoice project with Housing First participants.Represents a collaborative approach to authorship with vulnerable people.Discusses the transformative potential of participatory evaluations for community mental health.
Preparation of bi‐continuous poly(acrylonitrile‐co‐methyl acrylate) microporous membranes by a thermally induced phase separation method
Authors: Tan Linli , Han Na , Zhang Longfei , Qian Yongqiang , Zhang Xingxiang , Cui Zhenyu , Cai Jun 
Published: January 2018

ABSTRACTPoly(acrylonitrile‐co‐methyl acrylate) [P(AN‐MA)] flat microfiltration membranes were successfully prepared via the thermally induced phase separation (TIPS) method, by using low polar caprolactam (CPL) and methoxypolyethylene glycol 550 (MPEG 550) as the mixed diluent. In this work, P(AN‐MA) membranes exhibit bi‐continuous networks, porous surfaces, high porosity, and big pore size, when membrane fabricated from a high MPEG 550 content, low P(AN‐MA) concentration, and small cooling rate, it can be dry state preservation and do not need to be impregnated by any solvent. When the ternary system was composed of 15 wt % P(AN‐MA), 12.5 wt % CPL, and 87.5 wt % MPEG 550, formed at 25 °C air bath, membrane has the highest water flux of 4420 L m−2 h−1. The obtained P(AN‐AN) membrane displays a high carbonic black ink rejection ranging from 83.7 to 98.5 wt %. Moreover, P(AN‐MA) polymer not only retains the advantages of PAN but also reduces the polar component from 16.2 to 10.77 MPa0.5. It can be used membrane matrix to obtain pore structure and excellent mechanical property membrane via TIPS. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46173.
Rigid polyisocyanurate–waterglass foam composite: Preparation, mechanism, and thermal and flame‐retardant properties
Authors: Feng Guo‐Dong , Hu Li‐Hong , Ma Yan , Zhang Meng , Liu Cheng‐Guo , Zhou Yong‐Hong 
Published: January 2018

ABSTRACTA rigid polyisocyanurate–waterglass foam (PIWGRF) composite was prepared with polyaryl poly(methylene isocyanate) and waterglass (WG) as the main materials; water as a blowing agent, and no polyols. We speculated the formation mechanism of the PIWGRFs on the basis of the analysis of experiment data, scanning electron microscopy characterization, and transmission electron microscopy. The results show that three‐dimensional nanoflakes derived from the cured WG was observed; this was connected with polyisocyanurate by secondary bonding (SiOHN). Thermogravimetric testing indicated that the thermal stability and residual mass (34%) of the PIWGRFs were significantly higher than those of rigid traditional polyurethane foams (T‐PUFs). When the core density of the PIWGRFs was 32.6 kg/m3, the strength was up to 162.9 KPa by excessive filling. The flame retardancy of the PIWGRFs, including the time to ignition, heat‐release rate, total smoke of release, and limiting oxygen index, was obviously better than that of the T‐PUFs. The structure of the residual char was more dense and orderly; this was also an effective barrier layer. The reason was attributed to the fact that the WG did not contain combustible elements. So, the PIWGRFs had excellent thermal stability, flame retardancy, and environmental friendliness. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46182.