bluuebunny/crossref_metadata_2025_split huggingface dataset:
L'urgence sociale, blessure de sens
Authors: Portets Noëlle 
Published: February 2012

Résumé Alors que nous vivons un temps où l’urgence est la forme requise pour nos pas et nos corps, l’urgence sociale se dérobe à nos yeux. Malaise des travailleurs sociaux, l’urgence ne se donne pas. Malaise car il s’agit rien de moins que d’évaluer une situation de souffrance dans laquelle une personne peut se trouver : quel taux de crédit nécessite une souffrance pour être jugée recevable ? Malaise car la découverte d’autrui et celle de la mort vont de pair, décousant nos peaux au bord du nu de la vie, charriant avec elle l’ambivalence de nos émotions et de nos sentiments, au risque d’en faire l’épreuve. L’imagination peut alors faire distance entre soi et autrui, procédant par représentation et construction. Elle maintient les sentiments esthétiques (à visée possible de clôture – d’un enjeu de toi à moi) mais les étire vers des sentiments moraux (à visée d’universalité – du rapport de chacun à un nous, collectif). L’imagination ouvre ainsi la visibilité, autrement tempérée, de l’urgence et peut questionner des positionnements professionnels. Plus largement, des médiations sont toujours à penser au quotidien présent des rencontres, pour que des existences puissent conjuguer leur propre futur.
Plus de temps ?
Authors: Hortonéda Jeanine 
Published: February 2012

Résumé L’urgence ne nous donne pas le temps, elle ne se discute pas et c’est précisément pour cela qu’il est nécessaire d’interroger ce qui est en jeu dans cette mutation de notre rapport au temps. Qu’est-ce que le temps réel ? Le temps de l’action peut-il être pensé et vécu sans un horizon d’attente ? Comment pouvons-nous lier ensemble, avec Levinas, l’espérance en l’avenir et la responsabilité pour l’autre, c’est-à-dire l’urgence entendue en un sens éthique et politique.
Muscidae (Diptera) diversity in Churchill, Canada, between two time periods: evidence for limited changes since the Canadian Northern Insect Survey
Authors: Renaud Anaïs K. , Savage Jade , Roughley Robert E. 
Published: February 2012

AbstractA survey of muscid flies from Churchill, Manitoba, Canada, in 2007 yielded 155 species. Some components of species richness and composition of this contemporary assemblage were compared with those of a historical (pre-1965) assemblage, and the contribution of the three collecting methods used in the 2007 survey protocol was evaluated. Estimates of species richness indicated that Malaise traps yielded more species than did pan traps or sweep netting, and that species composition did not differ significantly between Malaise trap and pan trap catches. These results suggest that Malaise traps and sweep netting are adequate methods to survey northern Muscidae. We report little difference in estimated species richness and composition between time periods for material collected by sweep netting. When all material from the 2007 survey was pooled, 87% of the pre-1965 species were collected again in 2007. Most nonoverlapping species between time periods were rare in samples and (or) collected by different methods, suggesting a failure to detect as the most likely explanation for their absence in one assemblage. Nevertheless, the proportion of aquatic and semiaquatic species ofSpilogonaSchnabl was more than twice as high in the list of species not recovered in 2007 than in the pre-1965 assemblage.
Review of the shore-fly genus Oedenopiforma (Diptera: Ephydridae)
Authors: Mathis Wayne N. , Zatwarnicki Tadeusz 
Published: February 2012

AbstractThe shore-fly genus Oedenopiforma Cogan is reviewed, including new information on Oedenopiforma argentea (distribution), Oedenopiforma javana (comb. nov. and O. orientalissyn. nov.), and Oedenopiforma vockerothi (sp. nov. from United Arab Emirates). Structures of the male terminalia of these three species, a diagnosis of the genus, and a key to the included genera of Dryxini and species of Oedenopiforma are presented.
Stroke Prevention in Atrial Fibrillation: Where are We Now?
Authors: Ahmad Yousif , Lip Gregory Y.H. 
Published: February 2012

Atrial fibrillation is the commonest arrhythmia worldwide and is a growing problem. AF is responsible for 25% of all strokes, and these patients suffer greater mortality and disability. Warfarin has traditionally been the only successful therapy for stroke prevention, but its limitations have resulted in underutilisation. Major progress has been made in AF research, leading to improved management strategies. Better risk stratification permits identification of truly low-risk patients who do not require anticoagulation and we are able to simplify ourevaluation of a patient's bleeding risk. The advent of novel anticoagulants means warfarin is no longer the only choice for stroke prophylaxis. These drugs circumvent many of warfarin's inconveniences, but only long-term study and use will conclusively demonstrate how they compare to warfarin. The landscape of stroke prevention in AF has changed with effective alternatives to warfarin available for the first time in 60 years—but each new option brings new considerations.
Multiple retinal arterial macroaneurysms associated with submacular hemorrhage
Authors: Papageorgiou Eleni , Vasiliki Dimera , Koufakis Dimitrios 
Published: February 2012

Purpose To present the unusual case of multiple retinal arterial macroaneurysms (RAMs) associated with an extensive submacular hemorrhage. Methods A 64-year-old hypertensive woman is presented including the clinical findings, fluorescein angiography, and optical coherence tomography. Results The patient presented with 20/200 vision due to a dense submacular hemorrhage in the right eye. Fluorescein angiography revealed 4 hyperfluorescent lesions along the inferotemporal arteriole corresponding to RAMs. Optical coherence tomography confirmed RAM rupture with no choroidal abnormality. The patient refused surgical intervention. At 3-month follow-up, vision had improved to 20/70 with partial resolution of the hemorrhage. However, vitreoretinal traction with neurosensory retinal detachment involving the macula had developed. Conclusions Acquired RAMs are typically found as unilateral solitary lesions in older hypertensive women. The presence of 4 RAMs along the same arteriole has not been reported previously. Hypertensive patients should be examined regularly in order to detect potential RAMs early enough to permit treatment and prevent vision loss.
Device Physics of White Polymer Light‐Emitting Diodes
Authors: Nicolai Herman T. , Hof André , Blom Paul W. M. 
Published: February 2012

AbstractThe charge transport and recombination in white‐emitting polymer light‐ emitting diodes (PLEDs) are studied. The PLED investigated has a single emissive layer consisting of a copolymer in which a green and red dye are incorporated in a blue backbone. From single‐carrier devices the effect of the green‐ and red‐emitting dyes on the hole and electron transport is determined. The red dye acts as a deep electron trap thereby strongly reducing the electron transport. By incorporating trap‐assisted recombination for the red emission and bimolecular Langevin recombination for the blue emission, the current and light output of the white PLED can be consistently described. The color shift of single‐layer white‐emitting PLEDs can be explained by the different voltage dependencies of trap‐assisted and bimolecular recombination.
Chemoselective Hydrogenation of the Olefinic Bonds Using a Palladium/Magnesium‐Lanthanum Mixed Oxide Catalyst
Authors: Kantam Mannepalli Lakshmi , Kishore Ramineni , Yadav Jagjit , Sudhakar Medak , Venugopal Akula 
Published: February 2012

AbstractA palladium/magnesium‐lanthanum mixed oxide catalyst is found to be an efficient heterogeneous catalyst for the chemoselective hydrogenation of olefinic double bonds in the presence of various functional groups. The catalyst was recovered by centrifugation and reused for several cycles with consistent activity and selectivity.
Palladium Nanoparticles in Suzuki Cross‐Couplings: Tapping into the Potential of Tris‐Imidazolium Salts for Nanoparticle Stabilization
Authors: Planellas Marc , Pleixats Roser , Shafir Alexandr 
Published: February 2012

AbstractInspired by the proclivity of various palladium sources to form nanoparticles in imidazolium‐based ionic liquids, we now report that tris‐imidazolium salts bearing hexadecyl chains and a bridging mesitylene moiety are potent stabilizers of palladium nanoparticles efficiently prepared via a Chaudret‐type hydrogenation of the bis(dibenzylideneacetone)palladium(0). The palladium nanoparticles have been isolated in pure form and characterized by 1H nuclear magnetic resonance, transmission electron microscopy, electron diffraction and dynamic light scattering. The new materials proved effective in Suzuki cross‐coupling at a loading of 0.2% palladium. Thus, using a tris‐imidazolium iodide‐palladium material, a series of biaryl products has been prepared starting from aryl bromides and some activated chlorides. The possibility that this catalytic activity might be due to the formation of palladium N‐heterocyclic carbenes has been addressed through solid state 13C NMR and the synthesis of an imidazolium analogue in which the acidic 2‐H was replaced with a methyl group.
Primary Amine‐Thioureas with Improved Catalytic Properties for “Difficult” Michael Reactions: Efficient Organocatalytic Syntheses of (S)‐Baclofen, (R)‐Baclofen and (S)‐Phenibut
Authors: Tsakos Michail , Kokotos Christoforos G. , Kokotos George 
Published: February 2012

AbstractAmong the class of primary amine‐thioureas based on tert‐butyl esters of α‐amino acids, the most efficient organocatalyst for “difficult” Michael reactions was identified. The derivative based on (S)‐di‐tert‐butyl aspartate and (1R,2R)‐diphenylethylenediamine provided the products of the reaction between aryl methyl ketones and nitroolefins in excellent yields and enantioselectivities. In addition, this new catalyst can be used at low catalyst loading (5 mol%). The utility of this methodology was highlighted by the efficient synthesis of (S)‐baclofen, (R)‐baclofen and (S)‐phenibut.
Mizoroki–Heck Reactions Catalyzed by Dichloro{bis[1‐(dicyclohexylphosphanyl)piperidine]}palladium: Palladium Nanoparticle Formation Promoted by (Water‐Induced) Ligand Degradation
Authors: Oberholzer Miriam , Gerber Roman , Frech Christian M. 
Published: February 2012

AbstractThe palladium‐based dichlorobis[1‐(dicyclohexylphosphanyl)piperidine] complex – [(P{(NC5H10)(C6H11)2})2Pd(Cl)2] is readily prepared in quantitative yield from the reaction of [Pd(cod)(Cl)2] (cod=cycloocta‐1,5‐diene) with two equivalents of 1‐(dicyclohexylphosphanyl)piperidine in toluene under N2 within only a few minutes at room temperature. This complex is a highly active Heck catalyst with excellent functional group tolerance, which reliably operates at low catalyst loadings. Various activated, non‐activated, deactivated, functionalized, sterically hindered, and heterocyclic aryl bromides, which may contain nitro, chloro or trifluoromethane groups, nitriles, acetales, ketones, aldehydes, ethers, esters, lactones, amides, anilines, phenols, alcohols, carboxylic acids, and heterocyclic aryl bromides, such as pyridines and derivatives, as well as thiophenes and aryl bromides containing methylsulfanyl groups have been successfully coupled with various (also functionalized) alkenes in excellent yields and selectivities (the E‐isomers are typically exclusively formed) at 140 °C in the presence of 0.05 mol % of the catalyst in DMF. Even though lower catalyst loadings could be used for many electronically activated, non‐activated and some electronically deactivated aryl bromides without noticeable loss of activity, the great advantage of the reaction protocol presented here lies in its reliability and general applicability, which allows its direct adoption to other aryl bromides without the neccessity of its modification. Experimental observations indicated that palladium nanoparticles are the catalytically active form. Consequently, whereas comparable levels of activity were observed for dichloro‐bis(aminophosphine) complexes of palladium, a dramatic drop in activity was found for their phosphine‐based analogue [(P(C6H11)3)2Pd(Cl)2].
Selective Aerobic Oxidation of Alcohols by Using Manganese Oxide Nanoparticles as an Efficient Heterogeneous Catalyst
Authors: Sun Hua‐yin , Hua Qing , Guo Feng‐feng , Wang Zhi‐yong , Huang Wei‐xin 
Published: February 2012

AbstractManganese oxide (Mn3O4) nanoparticles have been successfully innovated to be efficient catalysts not only for the aerobic oxidation of various alcohols to aldehydes or ketones, but also for the selective aerobic oxidation of mixed alcohols.
Formation of Acetals under Rhodium‐Catalyzed Hydroformylation Conditions in Alcohols
Authors: Diebolt Olivier , Cruzeuil Clément , Müller Christian , Vogt Dieter 
Published: February 2012

AbstractHydroformylation of terminal alkenes in alcohol solvents leads to the selective formation of the corresponding acetals. The Xantphos ligand gave the best results as well as acetal selectivities higher than 99% and linear/branched ratios of up to 52 were obtained. The scope of the reaction was studied. Acetals were found to be unreactive under hydroaminomethylation conditions.
Catalytic System for Inhibition of Amination‐Type Reaction and Palladium‐Catalysed Direct Arylation using Non‐Protected Pyrazole Derivatives
Authors: Derridj Fazia , Roger Julien , Djebbar Safia , Doucet Henri 
Published: February 2012

AbstractThe palladium‐catalysed direct arylation at C‐4 of non‐protected 5‐aminopyrazoles was found to proceed in high yields using a variety of aryl bromides. The choice of potassium acetate as the base was found to be crucial to inhibit the amination reaction and to promote the direct arylation.
Hydroxyl Radical Promotes the Direct Iodination of Aromatic Compounds with Iodine in Water: A Combined Experimental and Theoretical Study
Authors: Zhang Peng , Sun Dongqing , Wen Mingwei , Yang Jingkui , Zhou Kebin , Wang Zhixiang 
Published: February 2012

AbstractIt is still a challenge to develop green, simple and effective approaches to prepare aromatic iodides. Herein, a novel and green strategy for the direct mono‐iodination of aromatic compounds starting with molecular iodine has been developed. The strategy uses ceria nanocrystals to decompose hydrogen peroxide, giving hydroxyl radicals which are demonstrated experimentally and computationally to be crucial to promote the iodinations.
Highly Efficient Nickel(II) Chloride/Bis(tricyclohexylphosphine)nickel(II) Chloride‐Cocatalyzed Hydrodefluorination of Fluoroarenes and Trifluorotoluenes with Superhydride
Authors: Zhao Wenwen , Wu Jingjing , Cao Song 
Published: February 2012

AbstractA simple and highly efficient approach for the hydrodefluorination of both fluoroarenes and trifluorotoluenes in the presence of lithium triethylborohydride using a catalytic amount of nickel(II) chloride (NiCl2, 2 mol%) combined with a catalytic amount of bis(tricyclohexylphosphine)nickel(II) chloride [NiCl2(PCy3)2, 2 mol%] as cocatalyst has been developed.
Iron‐Catalyzed Nitrogen‐Directed Coupling of Arene and Aryl Bromides Mediated by Metallic Magnesium
Authors: Ilies Laurean , Kobayashi Motoaki , Matsumoto Arimasa , Yoshikai Naohiko , Nakamura Eiichi 
Published: February 2012

Abstract2‐Arylpyridines, 2‐alkenylpyridine, and aromatic imines can be coupled with aryl bromides in the presence of an iron catalyst, metallic magnesium, a diamine ligand and an organic dihalide oxidant at 0 °C. The use of a 1:1 mixture of tetrahydrofuran and 1,4‐dioxane is essential for this CH bond activation reaction. The reaction has wider scope of the substrate compared with the reaction using a separately prepared Grignard reagent, and proceeds with lower catalyst loading (2.5 mol%).
An Efficient and Practical Protocol for Catalytic Hydrolysis of Nitriles by a Copper(I) Complex in Water
Authors: Li Zhengkai , Wang Lixia , Zhou Xiangge 
Published: February 2012

AbstractThe cuprous complex – Cu4I4(H2O)4 – has been isolated and employed for the catalytic hydrolysis of arenecarbonitriles, cinnamonitrile, and arylacetonitriles to the corresponding amides in pure water in high yields of up to 98%. The catalyst can be easily recovered and reused without loss of catalytic activity at least five times. Oxindole could be prepared successfully by one‐pot domino protocols based on this method.
Air‐Stable, Nitrile‐Ligated (Cyclopentadienone)iron Dicarbonyl Compounds as Transfer Reduction and Oxidation Catalysts
Authors: Plank Taylor N. , Drake Jessica L. , Kim Daniel K. , Funk Timothy W. 
Published: February 2012

AbstractA series of air‐stable, nitrile‐ligated (cyclopentadienone)iron dicarbonyl compounds was synthesized and their activities as catalysts in the transfer reduction of acetophenone were explored. While all were active catalysts, the acetonitrile adduct was chosen for further study and was found to be active in the transfer reduction of aldehydes and ketones and in the Oppenauer‐type oxidation of secondary alcohols. The acetonitrile catalyst exhibited activities similar to those of an analogous air‐sensitive iron hydride, but unlike the iron hydride it was unreactive in carbonyl reductions using hydrogen gas.
Gold‐Catalyzed Synthesis of Dibenzopentalenes – Evidence for Gold Vinylidenes
Authors: Hashmi A. Stephen K. , Wieteck Marcel , Braun Ingo , Nösel Pascal , Jongbloed Linda , Rudolph Matthias , Rominger Frank 
Published: February 2012

AbstractA series of easily accessible arene‐1,2‐diynes, bearing one aryl substituent on one of the alkynyl groups, is readily converted to dibenzopentalenes in good yields by gold(I) catalysts. The participation of gold acetylides could be proven by the direct conversion to the corresponding gem‐diaurated dibenzopentalenes with a gold catalyst. From an experiment with a gold acetylide complex and stoichiometric amounts of the gold “catalyst” the corresponding gem‐diaurated complex of a dibenzopentalene could be obtained and characterized by X‐ray crystal structure analysis. Labelling studies with deuterated alkynes show the expected deuteration of the two remaining positions of the pentalene core. All this provides evidence for a dual activation mode of the reaction and gold(I) vinylidene complexes as intermediates of the catalytic cycle.
Is severe obesity a cardiovascular health concern in the inuit population?
Authors: Kellett Samantha , Poirier Paul , Dewailly Eric , Sampasa Hugues , Chateau‐Degat Marie‐Ludivine 
Published: February 2012

AbstractObjectives:Obesity is rising globally and severe obesity (SO) [body mass index (BMI) = 40 kg/m2or = 35 kg/m2with co‐morbidity] is growing at a much faster rate. Amongst the Inuit, evolution of SO remains unknown. We investigated whether the level of SO changed and whether the cardio‐metabolic profile improved or deteriorated in Nunavik Inuit between 1992 and 2004.Methods:SO subjects were selected from two comparable population‐based studies. These studies were undertaken in Nunavik (Quebec, Canada), and were performed in two different time frames, separated by 12 years. Physiological (lipid profile, fasting insulin, fasting glucose, and blood pressure) as well as anthropometric data (BMI, waist circumference, and waist to hip ratio) were collected in both studies.Resutls:There was approximately a fourfold increase in the prevalence of SO in comparable age groups. This increase affected both genders between 1992 and 2004. Smoking rates in SO populations have significantly decreased during this period, from 85% to 41% (P< 0.0001). Overall, there were no statistically significant differences in the cardio‐metabolic profile (insulin, total cholesterol, LDL‐cholesterol, HDL‐cholesterol, triglycerides, systolic and diastolic blood pressures, BMI, and waist to hip ratio). There was, however, a significant increase in waist circumference (P< 0.001), especially in women (P< 0.01). Type 2 diabetes remained stable, at around 40% in this population.Conclusion:Although the prevalence of SO increased, the cardio‐metabolic profile remained stable. Nevertheless, regular monitoring of chronic disease in this population remains crucial. Am. J. Hum. Biol., 2012. © 2012 Wiley Periodicals, Inc.
Taller indian women are more successful at the marriage market
Authors: Smits Jeroen , Monden Christiaan W.S. 
Published: February 2012

AbstractObjectives:Whereas being tall has consistently been found a favorable characteristic at the marriage market for men, much less is known about the association between stature and marital success among women. Taller women are healthier than shorter women, give birth more easily and their offspring are healthier. We therefore would expect them to be more successful at the marriage market. However, existing evidence is mixed. We study the association between women's height and the odds of being married, marrying young, experiencing a divorce, and becoming widowed, and the association between women's height and their husbands' educational attainment and occupational status.Methods:Data come from the Indian National Family Health Survey 2005–2006, a representative study among 124,385 women and 74,369 men in all Indian states. Effects of female height on being married, marrying young, divorce, widowhood, and husband's occupation were estimated using logistic regression models. Effects of female height on husband's education were estimated using OLS regression models. Woman's education and age were always taken into account. Where possible controls for husband's height, husband's education, and age at marriage were included.Results:Positive effects of women's height on favorable marital outcomes were found. Taller than average women are more likely to marry, get higher educated husbands with better jobs and are less likely to marry at a very young age or to lose their husbands through divorce or premature death.Conclusions:Taller Indian women seem to be more successful at the marriage market. Am. J. Hum. Biol., 2012. © 2012 Wiley Periodicals, Inc.
Long‐term residence of juvenile loggerhead turtles to foraging grounds: a potential conservation hotspot in the Mediterranean
Authors: Casale Paolo , Broderick Annette C. , Freggi Daniela , Mencacci Resi , Fuller Wayne J. , Godley Brendan J. , Luschi Paolo 
Published: February 2012

ABSTRACT

Identifying highly frequented areas is a priority for sea turtle conservation. Although juveniles represent the bulk of the population, a minority of studies have investigated their movement patterns.
Six large juvenile loggerhead turtles that were found and released in an important foraging ground in the Mediterranean, the Tunisian continental shelf were tracked. Tracking data were obtained via satellite for periods ranging from 120 to 225 days and allowed the identification of high use areas.
All turtles generally performed apparently non‐directed, wandering movements in waters with a wide range of seafloor depths. They showed clear residential behaviour to the region with no evident seasonal pattern. Core areas of residence were in the neritic zone or on the edge of the continental shelf, largely overlapping among individuals, and were much smaller than residential oceanic areas reported elsewhere.
When integrated into current knowledge, these results suggest an ecological‐behavioural model of a gradual shift from a pelagic‐vagile to a benthic‐sedentary life style with progressive reduction of home ranges.
They also highlight an area of the continental shelf and offshore waters as potential core foraging ground for large juvenile loggerhead turtles in the Mediterranean informing future spatial management for loggerhead turtles. Copyright © 2012 John Wiley & Sons, Ltd.