bluuebunny/crossref_metadata_2025_split huggingface dataset:
L’intégration des différents acteurs dans le temps et l’espace scolaire
Authors: Barbosa Rafael Conde , Placco Vera Maria Nigro de Souza 
Published: February 2020

Dans cet article, nous partageons les résultats d´une recherche doctorale qui vise à discuter comment une politique publique peut envisager l’inclusion et l’intégration de tous les acteurs scolaires, en considérant tant la communauté scolaire que la communauté hors l’école, spécifiquement dans le Programme d’Enseignement Intégral (PEI). Le but de ce programme est de promouvoir un élève qui sera un sujet autonome, responsable et solidaire. Pour faire face au défi de comprendre l’inclusion dans les politiques publiques, nous avons étudié les actions menées pour soutenir et intégrer tous les acteurs scolaires dans cette voie. Les recherches menées par des chercheurs brésiliens nous guident dans cette compréhension (Paro, 1988 ; Libâneo, 2012 ; Ramos, 2012 ; Faveri, 2013). Le cadre méthodologique adopté pour réaliser cette recherche est l’observation des sujets dans deux écoles publiques situées dans la ville de São Paulo (Brésil), ainsi que des entretiens avec les directeurs, les vice-directeurs, les coordinateurs, les enseignants et les élèves. La triangulation des données est outillée par une analyse croisée des documents qui établissent les missions des différents acteurs, les données qualitatives collectées et le cadre théorique que soutient cette recherche. L’analyse a pu montrer que l’inclusion doit commencer par la reconnaissance et la mobilisation des acteurs de l’école pour qu’ils puissent mieux connaître l’environnement scolaire et maîtriser le temps et l’espaces scolaire.
Outils numériques et gestes d’adaptation inclusifs pour l’accessibilité du langage écrit aux élèves présentant des TSLA
Authors: Brun Xavière , Hache Caroline , Ladage Caroline 
Published: February 2020

L’accueil des élèves en situation de handicap, dont font partie les élèves présentant des troubles spécifiques du langage et des apprentissages, s’est généralisé depuis la loi de 2005. Leur présence en classe ordinaire amène les enseignants à adapter leurs pratiques en ayant recours aux outils numériques. Ont-ils accès à des formations pour les accompagner ? Quelle est l’influence de ces formations sur leurs pratiques inclusives ? Une enquête nationale, recueillant 3 707 participations, a été réalisée auprès des enseignants exerçant en milieu ordinaire dans les collèges publics nationaux. Les résultats montrent une corrélation entre les caractéristiques des formations et les gestes déclarés d’adaptation pédagogique et d’évaluation. La démarche volontaire est fortement corrélée à une variation de gestes, interrogeant l’influence de la motivation dans une démarche de professionnalisation.
Portrait comparatif d’enseignants québécois et tessinois de leur sentiment d’efficacité personnelle à gérer la classe
Authors: Gaudreau Nancy , Massé Line , Nadeau Marie-France , Verret Claudia , Bernier Vincent , Frenette Eric 
Published: February 2020

Le sentiment d’efficacité personnelle (SEP) des enseignants est reconnu pour grandement influencer la qualité de l’enseignement offert aux élèves, notamment dans un contexte d’éducation inclusive et d’élèves présentant des difficultés comportementales. Le but de cette étude est d’examiner et de comparer le SEP en gestion de classe des enseignants du Québec ( n = 1 179) et du Tessin ( n = 242) qui œuvrent au préscolaire et au primaire, à partir de variables sociodémographiques. Des relations ont été observées en ce qui concerne l’expérience des enseignants et leur SEP à gérer la classe. Les résultats révèlent des différences significatives selon le pays d’origine, le genre et l’ordre d’enseignement des participants.
Long-Term Follow-Up of Efficacy and Safety of YAG Vitreolysis for Symptomatic Weiss Ring Floaters
Authors: Shah Chirag P. , Heier Jeffrey S. 
Published: February 2020

BACKGROUND AND OBJECTIVE:
To describe long-term outcomes and complications after YAG vitreolysis.

PATIENTS AND METHODS:
This is an observational extension study to a previously reported, randomized, controlled study. Thirty-five of 52 patients returned at an average of 2.3 years (range: 1.1 to 3.0) after their last YAG vitreolysis treatment to assess long-term efficacy and safety.

RESULTS:
At 2.3 years, 50% of patients felt their symptoms were significantly or completely better, similar to results at 6 months (53%). There was a 59.4% improvement in symptoms, similar to 6 months (54%). The 25-item National Eye Institute Visual Function Questionnaire revealed improvements in: near activities, distance vision, mental health, and role difficulties. Adverse events included three eyes with delayed retinal tears, noted 1.4 to 2.8 years after YAG vitreolysis.

CONCLUSIONS:
The efficacy of YAG vitreolysis observed at 6 months was sustained at 2.3 years, with half reporting significant or complete resolution of their floater symptoms. Three patients developed delayed retinal tears not evident at 6 months. A large, long-term randomized controlled trial is needed to determine the true risks of YAG vitreolysis.

[
Ophthalmic Surg Lasers Imaging Retina
. 2020;51:85–88.]
Von Hippel-Lindau Syndrome Phenotype With Prominent Vitreoretinal Neovascularization Treated With Early PPV: A Case Series and Literature Review
Authors: Zubair Talhah , Callaway Natalia F. , Ludwig Cassie Ann , Tang Peter H. , Shields Ryan A. , Ji Marco H. , Vail Daniel , Powers Matthew A. , Moshfeghi Darius M. 
Published: February 2020

BACKGROUND AND OBJECTIVE:
To describe a case series of three patients in one family with Von Hippel-Lindau (VHL) disease who presented with vitreoretinal neovascularization and resulting tractional retinal detachments (TRDs). This vitreoretinal phenotype of VHL may benefit from early surgical intervention.

PATIENTS AND METHODS:
Descriptive case series of three patients in one family with VHL disease. A review of the literature regarding surgical intervention for VHL was performed.

RESULTS:
All three patients developed prominent intravitreal neovascularization with fibrovascular growth within the vitreous secondary to a retinal capillary hemangioma. Two subjects with intravitreal neovascularization were treated with laser and cryotherapy but eventually developed a TRD. The final vision in these two patients was light perception and 20/300. The eye that was preemptively treated with vitrectomy to remove the vitreous sustaining the neovascularization had visual acuity of 20/50 after surgery.

CONCLUSION:
Intravitreal neovascularization with fibrovascular proliferation may be an indication for vitrectomy prior to the development of retinal detachment.

[
Ophthalmic Surg Lasers Imaging Retina
. 2020;51:109–115.]
Uniqueness and stability of the saddle-shaped solution to the fractional Allen–Cahn equation
Authors: Felipe-Navarro Juan Carlos , Sanz-Perela Tomás 
Published: February 2020

In this paper we prove the uniqueness of the saddle-shaped solution

u\colon \mathbb{R}^{2m} \to \mathbb{R}

to the semilinear nonlocal elliptic equation

(-\Delta)^\gamma u = f(u)

in

\mathbb{R}^{2m}

, where

\gamma \in (0,1)

and

f

is of Allen–Cahn type. Moreover, we prove that this solution is stable if

2m\geq 14

. As a consequence of this result and the connection of the problem with nonlocal minimal surfaces, we show that the Simons cone

\{(x', x'') \in \mathbb{R}^{m}\times \mathbb{R}^m: |x'| = |x''|\}

is a stable nonlocal

(2\gamma)

-minimal surface in dimensions

2m\geq 14

.

Saddle-shaped solutions of the fractional Allen–Cahn equation are doubly radial, odd with respect to the Simons cone, and vanish only in this set. It was known that these solutions exist in all even dimensions and are unstable in dimensions 2, 4, and 6. Thus, after our result, the stability remains an open problem only in dimensions 8, 10, and 12.
The importance of studying this type of solution is due to its relation with the fractional version of a conjecture by De Giorgi. Saddle-shaped solutions are the simplest non 1D candidates to be global minimizers in high dimensions, a property not yet established in any dimension.
Interwar Internationalism and the Rebuilding of the Catholic University of Louvain Library (1914–1928)
Authors: Witt Steven 
Published: February 2020

ABSTRACT
Drawing upon archival sources from the Carnegie Endowment for International Peace (CEIP) and the Nicholas Murray Butler papers, this article situates postwar reconstruction of the library within the context of the wider internationalist movement and interwar attempts to replace nationalism with internationalism as a means to guarantee an enduring peace. The article analyzes the manner this library served as a symbol of the destruction of cultural heritage, civilization's conquest over barbarism, and the potential for moving beyond a state system focused on warfare. By contrasting the actions of the CEIP and the international library community that supported the project, this article views the campaign to rebuild the library through attempts to promote internationalism and foster reconciliation in Europe, exposing the difficulties faced by internationalists working in a transnational context to sway public opinion and overcome the power of nationalism as an animating force among states and citizens.
Retrospective study: clinicopathological features and prognosis of idiopathic membranous nephropathy with seronegative anti-phospholipase A2 receptor antibody
Authors: Guo Wenkai , Zhang Yan , Gao Caifeng , Huang Jing , Li Jiatong , Wang Rong , Chen Bing 
Published: February 2020

Background
To discuss the clinicopathological features and prognosis of patients with idiopathic membranous nephropathy (IMN) who are serum-negative for the anti-PLA2R antibody.

Method
Overall, 229 IMN patients were retrospectively collected in this study and classified into anti-PLA2R antibody-negative (PLA2R−, 59 cases) and antibody-positive (PLA2R+, 170 cases) groups. The clinical and pathological features of the PLA2R− group were analyzed; 162 patients in both groups were followed up, and the PLA2R antigen was detected in renal biopsies from the PLA2R− group. Kaplan-Meier and survival analyses were used to compare differences in prognosis.

Results
Serum albumin levels were higher and 24-hour urine protein, creatinine, and beta 2-microglobulin (BMG) levels were lower in the PLA2R− group than in the PLA2R+ group; the proportion of acute and chronic tubular lesions was also significantly lower in the PLA2R− group than in in the PLA2R+ group. After treatment, the remission rate was significantly higher in the negative group than in the positive group (93.02% vs 74.78%,), especially the rate of complete remission (51.16% vs 23.47%). Furthermore, the PLA2R antigen-positive staining rate of 43 patients in the PLA2R− group was 62.79%. Although not significant, the survival rate was higher in the PLA2R− group than in the PLA2R+ group. BMG, 24-hour urine protein and acute and chronic tubular lesions were risk factors for kidney death, and 24-hour urine protein was an independent risk factor for kidney death.

Conclusions
Compared with the PLA2R+ group, the PLA2R− group had mild clinical manifestations and pathological damage and a higher clinical treatment remission rate. Renal tissue PLA2R antigen testing can be considered for patients with seronegative IMN to increase the diagnostic rate.
A Horizontal Gene Transfer Led to the Acquisition of a Fructan Metabolic Pathway in a Gall Midge
Authors: Cheng Xiaoyan , Garcés‐Carrera Sandra , Whitworth Robert Jeff , Fellers John P. , Park Yoonseong , Chen Ming‐Shun 
Published: February 2020

AbstractAnimals are thought to use only glucose polymers (glycogen) as energy reserve, whereas both glucose (starch) and fructose polymers (fructans) are used by microbes and plants. Here, it is reported that the gall midge Mayetiola destructor, and likely other herbivorous animal species, gained the ability to utilize dietary fructans directly as storage polysaccharides by a single horizontal gene transfer (HGT) of bacterial levanase/inulinase gene followed by gene expansion and differentiation. Multiple genes encoding levanases/inulinases have their origin in a single HGT event from a bacterium and they show high expression levels and enzymatic activities in different tissues of the gall midge, including nondigestive fat bodies and eggs, both of which contained significant amounts of fructans. This study provides evidence that animals can also use fructans as energy reserve by incorporating bacterial genes in their genomes.
Stretchable, Transparent, and Thermally Stable Triboelectric Nanogenerators Based on Solvent‐Free Ion‐Conducting Elastomer Electrodes
Authors: Zhang Panpan , Chen Yanghui , Guo Zi Hao , Guo Wenbin , Pu Xiong , Wang Zhong Lin 
Published: February 2020

AbstractThe development of stretchable/soft electronics requires power sources that can match their stretchability. In this study, a highly stretchable, transparent, and environmentally stable triboelectric nanogenerator with ionic conductor electrodes (iTENG) is reported. The ion‐conducting elastomer (ICE) electrode, together with a dielectric elastomer electrification layer, allows the ICE‐iTENG to achieve a stretchability of 1036% and transmittance of 91.5%. Most importantly, the ICE is liquid solvent‐free and thermally stable up to 335 °C, avoiding the dehydration‐induced performance degradation of commonly used hydrogels. The ICE‐iTENG shows no decrease in electrical output even after storing at 100 °C for 15 h. Biomechanical motion energies are demonstrated to be harvested by the ICE‐iTENG for powering wearable electronics intermittently without extra power sources. An ICE‐iTENG‐based pressure sensor is also developed with sensitivity up to 2.87 kPa−1. The stretchable ICE‐iTENG overcomes the strain‐induced performance degradation using percolated electrical conductors and liquid evaporation‐induced degradation using ion‐conducting hydrogels/ionogels, suggesting great promising applications in soft/stretchable electronics under a relatively wider temperature range.
Photophoretic Levitation of Macroscopic Nanocardboard Plates
Authors: Cortes John , Stanczak Christopher , Azadi Mohsen , Narula Maanav , Nicaise Samuel M. , Hu Howard , Bargatin Igor 
Published: February 2020

AbstractScaling down miniature rotorcraft and flapping‐wing flyers to sub‐centimeter dimensions is challenging due to complex electronics requirements, manufacturing limitations, and the increase in viscous damping at low Reynolds numbers. Photophoresis, or light‐driven fluid flow, was previously used to levitate solid particles without any moving parts, but only with sizes of 1–20 µm. Here, architected metamaterial plates with 50 nm thickness are leveraged to realize photophoretic levitation at the millimeter to centimeter scales. Instead of creating lift through conventional rotors or wings, the nanocardboard plates levitate due to light‐induced thermal transpiration through microchannels within the plates, enabled by their extremely low mass and thermal conductivity. At atmospheric pressure, the plates hover above a solid substrate at heights of ≈0.5 mm by creating an air cushion beneath the plate. Moreover, at reduced pressures (10–200 Pa), the increased speed of thermal transpiration through the plate's channels creates an air jet that enables mid‐air levitation and allows the plates to carry small payloads heavier than the plates themselves. The macroscopic metamaterial structures demonstrate the potential of this new mechanism of flight to realize nanotechnology‐enabled flying vehicles without any moving parts in the Earth's upper atmosphere and at the surface of other planets.
A Nontoxic Bifunctional (Anti)Solvent as Digestive‐Ripening Agent for High‐Performance Perovskite Solar Cells
Authors: Yun Yikai , Wang Fangfang , Huang Hongyan , Fang Yinyu , Liu Sizhou , Huang Wenchao , Cheng Zhengchun , Liu You , Cao Yezhou , Gao Mei , Zhu Lin , Wang Lin , Qin Tianshi , Huang Wei 
Published: February 2020

AbstractThe preparation of high‐quality perovskite films is important for achieving high‐performance perovskite solar cells (PSCs). The effective balance between solvent and antisolvent is an essential factor for regulating high‐quality perovskite film during the spin‐coating and thermal‐annealing steps. In this work, a greener, nonhalogenated, nontoxic bifunctional (anti)solvent, methyl benzoate (MB), is developed not only as an antisolvent to rapidly generate crystal seeds at the perovskite spin‐coating step, but also as a digestive‐ripening solvent for the perovskite precursors, which can prevent the loss of organic components during the thermal‐annealing stage and effectively suppress the formation of miscellaneous lead halide phases. As a result, this novel bifunctional (anti)solvent is employed in planar n–i–p PSCs for engineering high‐quality perovskite layers and thus achieving a power conversion efficiency up to 22.37% with negligible hysteresis and >1300 h stability. Moreover, due to the high boiling point and low‐volatility characteristic of MB, high‐performance PSCs are achieved reproducibly at different operating temperatures (22–34 °C). Therefore, this developed bifunctional solvent system can provide a promising platform toward globally upscaling and commercializing PSCs in all seasons and regions.
Smart Sponge for Fast Liquid Absorption and Thermal Responsive Self‐Squeezing
Authors: Cui Ying , Wang Yujie , Shao Ziyu , Mao Anran , Gao Weiwei , Bai Hao 
Published: February 2020

AbstractLiquid absorption and recycling play a crucial role in many industrial and environmental applications, such as oil spill cleanup and recovery, hemostasis, astronauts' urine recycling, and so on. Although many liquid absorbing materials have been developed, it still remains a grand challenge to achieve both fast absorption and efficient recycling in a cost‐effective and energy‐saving manner, especially for viscous liquids such as crude oil. A smart polyurethane‐based porous sponge with aligned channel structure is prepared by directional freezing. Compared to common sponges with random porous structure, the as‐prepared smart sponge has larger liquid absorption speed due to its lower tortuosity and stronger capillary (“tortuosity effect”). More importantly, the absorbed liquid can be remotely squeezed out due to a thermally responsive shape memory effect when the sponge is heated up. Such smart sponges with well‐defined porous structure and thermal responsive self‐squeezing capability have great potential in efficient liquid absorption and recycling.
Hemin Catalyzed Dealkylative Intercepted [2, 3]‐Sigmatropic Rearrangement Reactions of Sulfonium Ylides with 2, 2, 2‐Trifluorodiazoethane
Authors: Yan Xiaojing , Li Chang , Xu Xiaofei , Zhao Xiaoyong , Pan Yuanjiang 
Published: February 2020

AbstractA dealkylative intercepted [2, 3]‐sigmatropic rearrangement reaction of allylic sulfides with 2, 2, 2‐trifluorodiazoethane (CF3CHN2) is reported, the commercially available and biocompatible catalyst hemin was found to efficiently catalyze this transformation across a diverse set of allylic sulfides with in situ generated CF3CHN2, providing excellent yields (up to 99%) under mild condition without inert gas protection. In addition, CF3CHN2 exhibited unique reactivity toward this process compared with other frequently used diazo reagents. This work expands the range of carbene‐mediated transformations catalyzed by hemin and introduces a concise and general strategy for exploiting new possibility of reactions concerning organosulfides.magnified image
Efficient Perovskite Solar Cells by Reducing Interface‐Mediated Recombination: a Bulky Amine Approach
Authors: Liang Lusheng , Luo Haitian , Hu Junjie , Li Hui , Gao Peng 
Published: February 2020

AbstractThe presence of non‐radiative recombination at the perovskite surface/interface limits the overall efficiency of perovskite solar cells (PSCs). Surface passivation has been demonstrated as an efficient strategy to suppress such recombination in Si cells. Here, 1‐naphthylmethylamine iodide (NMAI) is judiciously selected to passivate the surface of the perovskite film. In contrast to the popular phenylethylammonium iodide, NMAI post‐treatment primarily leaves NMAI salt on the surface of the perovskite film. The formed NMAI layer not only efficiently decreases the defect‐assisted recombination for chemical passivation, but also retards the charge accumulation of energy level mis‐alignment for vacuum level bending and prevents minority carrier recombination due to the charge‐blocking effect. Consequently, planar PSCs with high efficiency of 21.04% and improved long‐term stability (98.9% of the initial efficiency after 3240 h) are obtained. Moreover, open‐circuit voltage as high as 1.20 V is achieved at the absorption threshold of 1.61 eV, which is among the highest reported values in planar PSCs. This work provides new insights into the passivation mechanisms of organic ammonium salts and suggests future guidelines for developing improved passivation layers.
Death, sex, and sugars: variations in nonstructural carbohydrate concentrations in a sexually plastic tree
Authors: Blake‐Mahmud Jennifer , Struwe Lena 
Published: February 2020

PremiseEnvironmental sex determination (ESD) is a rare sex determination system in which individuals may switch sex expression throughout their lifetimes in response to environmental factors. In sexually stable species, individuals usually bear more female flowers if the plants are larger, have greater access to limiting resources, or are in better condition. Research regarding sexually plastic species with ESD and how resources correlate with sex expression is limited. Furthermore, most research investigates resources at the population level, failing to account for resources available to individuals for growth, maintenance, or reproduction.MethodsAcer pensylvanicum is a species that is known to switch sex. Using twig samples collected during 2014–2016 in December and May, we analyzed resource status in the form of stored nonstructural carbohydrates (NSCs) and compared this with expressed sex.ResultsWe found that females had higher sugar concentrations than males. Furthermore, males changing expression to female had higher sugar concentrations during the prior winter than did males remaining male. We found that size was not a key predictor: neither male nor female‐flowering individuals increased NSC concentrations with size. Dying female trees had high concentrations of NSCs throughout the dying process and only manifested reduced NSCs once dead.ConclusionsThis is the first study showing significant correlations between NSCs and sex expression in a plant species with ESD. These findings support the hypothesis that sex switching could be a consequence of increased resource availability and that the high female mortality of A. pensylvanicum populations is likely not a direct result of carbon starvation.
Influence of HMTA ligand in MMA AGET ATRP emulsion polymerization
Authors: Awad Mohammed , Dhib Ramdhane , Duever Thomas 
Published: February 2020

AbstractInteractions of hexamethylenetetramine ligand in atom transfer radical polymerization initiated by activator generated by electron transfer were studied. Polymerization of methyl methacrylate was done using two‐step experimental procedure in 2 L emulsion batch reactor at 50, 60, and 80°C. The selection of reactant ratios was quite challenging for a reactor of this size. Replicate runs were conducted for data reproducibility purpose. Gravimetry method and gel permeation chromatography were used to determine monomer conversion, Mn, and PDI of polymer samples. PMMA produced was also characterized by means of dynamic light scattering, Fourier‐transform infrared spectroscopy and nuclear Magnetic Resonance spectroscopy. Results showed high monomer conversion up to 93% and Mn ranging 243–274 kg/mol with PDI from 1.45 to 1.60. Besides, combining HMTA with sodium dodecyl sulfate, an anionic surfactant, a well‐controlled polymer with a lower Mn of 201 kg/mol and PDI of 1.56 was obtained in 3 hr reaction time.