bluuebunny/crossref_metadata_2025_split huggingface dataset:
L’usage de la télédétection pour l’évaluation économique des écosystèmes marins : application à l’aire marine protégée de Tristão en Guinée
Authors: Turmine Vincent , Binet Thomas , Failler Pierre 
Published: September 2012

Cet article présente la méthode et les résultats du travail de modélisation de télédétection réalisé dans le cadre du programme EVA visant à estimer la valeur économique et sociale des écosystèmes marins des Aires Marines Protégées (AMP) de l’Afrique de l’Ouest. La télédétection est réalisée par un procédé original et complexe basé sur une méthode combinée de classifications non supervisées et d’analyses en composantes principales. Elle permet une reconnaissance des différents écosystèmes marins et côtiers ainsi qu’une évaluation de leur état de santé, deux informations indispensables pour mener à bien le travail d’évaluation économique des écosystèmes. D’un point de vue pratique, la modélisation exposée dans cet article est particulièrement recommandée lorsque les données spatiales sur les écosystèmes marins et côtiers font défaut ou que l’accès au site est très difficile ou très coûteux. En outre, ce travail de modélisation permet de mener à bien une identification rapide des zones d’action prioritaires pour la mise en place de mesure de conservation des écosystèmes de l’AMP.
Influence of Surgical Experience in the Learning Curve of a New Approach in Hip Replacement: Anterior Mini-Invasive Vs. Standard Lateral
Authors: Pogliacomi Francesco , Paraskevopoulos Alessandro , Costantino Cosimo , Marenghi Pietro , Ceccarelli Francesco 
Published: September 2012

There is conflicting evidence regarding the potential benefit of minimally invasive surgery for total hip arthroplasty (THA), especially during the ‘learning curve’ of individual surgeons. Sixty patients who underwent THA between January and December 2010 were evaluated. The aim was to assess the anterior mini-invasive (MI) approach performed in 30 patients during the learning curve of a single experienced hip surgeon compared with the results of 30 patients operated upon through a standard lateral approach by the same surgeon. Operation and hospitalisation times, blood loss, number of transfusions, peri-operative complications and femoral/acetabular component placement were monitored. Harris Hip Score (HHS) and Hip Disability and Osteoarthritis Outcome Score (HOOS) were analysed before and 12 months after surgery. Pain Visual Analogue Scale (VAS) was also recorded 1 week and 1 month after surgery. Hospitalisation, blood loss, number of transfusions and VAS score 1 week postoperatively were significantly lower and operative time was significantly longer in the anterior MI approach. Similar functional outcomes 1 year after surgery, component positioning and complication rates were observed in both groups. The results suggest that anterior MI approach is a safe procedure during the learning curve of an experienced hip surgeon.
Paranormal and Religious Believers Are More Prone to Illusory Face Perception than Skeptics and Non‐believers
Authors: Riekki Tapani , Lindeman Marjaana , Aleneff Marja , Halme Anni , Nuortimo Antti 
Published: October 2012

SummaryIllusory face perception, a tendency to find human‐like faces where none are actually present in, for example, artifacts or scenery, is a common phenomenon that occasionally enters the public eye. We used two tests (N = 47) to analyze the relationship between paranormal and religious beliefs and illusory face perception. In a detection task, the participants detected face‐like features from pictures of scenery and landscapes with and without face‐like areas and, in a rating task, evaluated the face‐likeness and emotionality of these areas. Believer groups were better at identifying the previously defined face‐like regions in the images but were also prone to false alarms. Signal detection analysis revealed that believers had more liberal answering criteria than skeptics, but the actual detection sensitivity did not differ. The paranormal believers also evaluated the artifact faces as more face‐like and emotional than the skeptics, and a similar trend was found between religious and non‐religious people. Copyright © 2012 John Wiley & Sons, Ltd.
Use of a disease risk score to compare serious infections associated with anti–tumor necrosis factor therapy among high‐ versus lower‐risk rheumatoid arthritis patients
Authors: Curtis Jeffrey R. , Xie Fenglong , Chen Lang , Muntner Paul , Grijalva Carlos G. , Spettell Claire , Fernandes Joaquim , Mcmahan Raechele M. , Baddley John W. , Saag Kenneth G. , Beukelman Timothy , Delzell Elizabeth 
Published: September 2012

AbstractObjectiveTo evaluate whether rates of serious infection with anti–tumor necrosis factor (anti‐TNF) therapy in rheumatoid arthritis (RA) patients differ in magnitude by specific drugs and patient characteristics.MethodsAmong new nonbiologic disease‐modifying antirheumatic drug users enrolled in Medicare and Medicaid or a large US commercial health plan, we created and validated a person‐specific infection risk score based on age, demographics, insurance type, glucocorticoid dose, and comorbidities to identify patients at high risk for hospitalized infections. We then applied this risk score to new users of infliximab, etanercept, and adalimumab and compared the observed 1‐year rates of infection to one another and to the predicted infection risk score estimated in the absence of anti‐TNF exposure.ResultsAmong 11,657 RA patients initiating anti‐TNF therapy, the observed 1‐year rate of infection was 14.2 infections per 100 person‐years in older patients (age ≥65 years) and 4.8 in younger patients (age <65 years). There was a relatively constant rate difference of ∼1–4 infections per 100 person‐years associated with anti‐TNF therapy across the range of the infection risk score. Infliximab had a significantly greater adjusted rate of infection compared to etanercept and adalimumab in both high‐ and lower‐risk RA patients.ConclusionThe rate of serious infections for anti‐TNF agents was incrementally increased by a fixed absolute difference irrespective of age, comorbidities, and other factors that contributed to infections. Older patients and those with high comorbidity burdens should be reassured that the magnitude of their incremental risk with anti‐TNF agents is not greater than for lower‐risk patients.
Decentralized adaptive controller for synchronization of nonlinear dynamical heterogeneous networks
Authors: Fradkov A.L. , Junussov I.A. 
Published: September 2012

SUMMARYFor a network of interconnected nonlinear dynamical systems, an adaptive leader–follower output feedback synchronization problem is considered. The proposed structure of decentralized controller and adaptation algorithm is based on speed gradient and passivity. Sufficient conditions of synchronization for one class of heterogeneous networks are established. An example of synchronization of the network of nonidentical Chua systems is analyzed. The main contribution of the paper is adaptive controller design and analysis under conditions of incomplete measurements, incomplete control, and uncertainty. Copyright © 2012 John Wiley & Sons, Ltd.
Mutually Complementary Metal‐ and Organocatalysis with Collective Synthesis: Asymmetric Conjugate Addition of 1,3‐Carbonyl Compounds to Nitroenynes and Further Reactions of the Products
Authors: Li Xiang , Li Xiaojiao , Peng Fangzhi , Shao Zhihui 
Published: September 2012

AbstractThe first metal‐catalyzed 1,4‐selective asymmetric addition of malonates to nitroenynes promoted by a simple chiral nickel(II)‐diamine catalyst, was developed, facilitating a mild synthesis of a novel type of multifunctional chiral β‐alkynyl acids bearing a nitro group. Based on this protocol, we have developed a practical and collective synthesis of a series of diverse functional molecules and building blocks including new types of chiral β‐alkynyl‐γ‐amino acids, β‐functionalized chiral δ‐keto‐γ‐lactones, chiral γ‐alkylidenelactones, alkynyl‐substituted pyrrole‐3‐carboxylic acid derivatives, tetrasubstituted furans and chiral β‐alkynyl‐γ‐lactams. Notably, we discovered two unusual tandem reactions leading to functionalized chiral 1,5‐dicarbonyl compounds. In addition, by employing simple bifunctional organocatalysts, we have developed the first regio‐, diastereo‐ and enantioselective conjugate addition of α‐substituted β‐keto esters to nitroenynes, which is poorly diastereoselective with chiral nickel(II)‐diamine catalysts, providing a new entry to adjacent quaternary and tertiary stereocenters in one step. Based on this protocol, we have developed a concise asymmetric synthesis of conformationally constrained bicyclic γ2‐amino acids featuring an alkynyl side chain with an adjacent quaternary carbon stereocenter. The study described here demonstrates that the mutually complementary strategy of transition metal catalysis and organocatalysis is a powerful and promising tool in catalytic asymmetric synthesis.
Silver‐Assisted Difunctionalization of Terminal Alkynes: Highly Regio‐ and Stereoselective Synthesis of Bromofluoroalkenes
Authors: Li Yibiao , Liu Xiaohang , Ma Deyun , Liu Bifu , Jiang Huanfeng 
Published: September 2012

AbstractThe difunctionalization of terminal alkynes was achieved with silver fluoride (AgF) and N‐bromosuccinimide (NBS) as halogen sources. The presence of the halide moiety greatly enhances the reactivity of the vinyl fluoride compounds that can probably can be transformed into various products that are difficult or even impossible to obtain via direct fluorination. Meanwhile, the monofluoro<.>alkenes were facilely synthesized via a highly chemo‐ and regioselective fluorination of electron‐deficient CC triple bonds using AgF as fluorinating reagent in good yields.
Dynamic Kinetic Resolution via Hydrolase‐Metal Combo Catalysis in Stereoselective Synthesis of Bioactive Compounds
Authors: Hoyos Pilar , Pace Vittorio , Alcántara Andrés R. 
Published: September 2012

AbstractThe development of new and more economically and environmentally attractive processes to afford chiral molecules is still an open challenge in organic synthesis. During last years the combination of an enzyme‐catalyzed kinetic resolution (KR) with the in situ transition metal mediated‐racemization of the unreacted enantiomer in a dynamic kinetic resolution (DKR) has received great attention in the preparation of enantiomerically pure compounds, as this methodology allows one to achieve very high conversions and enantiomeric excesses. Several transition metal complexes have been found to be compatible with enzymatic catalysts and highly successful DKR processes of functionalized alcohols and amines have been developed. Those chemicals are valuable building blocks for the further production of many pharmaceuticals and fine chemicals. The aim of this review is to update the advances developed during the past decade related to the coupling of enzymes and transition metal catalysts in DKR processes, focusing on the application of this innovative technique in the synthetic route of biologically active compounds.
Desulfurization Strategy in the Construction of Azoles Possessing Additional Nitrogen, Oxygen or Sulfur using a Copper(I) Catalyst
Authors: Guin Srimanta , Rout Saroj Kumar , Gogoi Anupal , Nandi Shyamapada , Ghara Krishna Kanta , Patel Bhisma K. 
Published: September 2012

AbstractA tandem and convergent approach to various N‐, O‐, or S‐containing azoles has been developed by exploiting the thiophilic property of copper(I) iodide used in a catalytic quantity. The present protocol gives access to amino‐substituted tetrazoles, triazoles, oxadiazoles and thiadiazoles via oxidative desulfurization of their respective precursors followed by inter‐ or intramolecular attack of suitable nucleophiles. For aminotetrazoles and triazoles an excellent regioselectivity has been achieved through proper tuning of the pKa values of the parent amines attached to unsymmetrical thioureas. The method represents an autocatalytic process in which copper(I) iodide gets converted to copper(II) sulfide which in turn transforms to active copper(II) oxide that effectively carries forward the catalytic cycle. The fate of the copper catalyst has also been studied using scanning electron microscopic (SEM) and energy‐dispersive X‐ray spectroscopic (EDS) analyses which give an insight into the mechanism for this catalytic process.
Palladium‐Catalyzed Cross‐Coupling of 1‐Aminoazoles with Aryl Chlorides: Application to the Synthesis of Unsymmetrical N,N′‐Diaryl‐1‐aminoindoles
Authors: Brachet Etienne , Messaoudi Samir , Peyrat Jean‐François , Brion Jean‐Daniel , Alami Mouad 
Published: September 2012

AbstractAn efficient method for the selective mono‐N‐arylation of 1‐aminoazoles to provide a range of N‐aryl‐1‐aminoazoles in good yields is described. This process based on the use of tris(dibenzylideneacetone)dipalladium associated to Xphos as the catalyst system is general, and allows the coupling to proceed, for the first time, with a variety of cheaper and less reactive aryl chlorides. The sequential combination of selective monoarylation using aryl chlorides and a second N‐arylation reaction using (hetero)aryl bromides and iodides proved to be useful for the rapid construction of non‐symmetrical N,N′‐diaryl‐1‐aminoindoles in good yields.
A Short Asymmetric Synthesis of the Benzopyrano[3,4‐c]pyrrolidine Coreviaan Organocatalytic Domino Oxa‐Michael/Michael Reaction
Authors: Wang Chuan , Yang Xuena , Raabe Gerhard , Enders Dieter 
Published: September 2012

AbstractA short and highly stereoselective asymmetric synthesis of 3,4‐trans‐disubstituted chromans employing nitrovinylphenols and acrolein as precursorsviaa domino oxa‐Michael/Michael reaction is described. This cascade was efficiently catalyzed by diphenylprolinol TMS ether furnishing the products in good to excellent yields (62–91%) and excellent stereoselectivities (dr: 94:6–97:3, 93–98%ee). The domino products can be converted into the correspondingN‐alkylatedtrans‐benzopyrano[3,4‐c]pyrrolidines through a reductive amination/N‐alkylation sequence. This was demonstrated for the case of a descyano derivative of S33138.
Asymmetric Cyanation of α‐Ketiminophosphonates Catalyzed by Cinchona Alkaloids: Enantioselective Synthesis of Tetrasubstituted α‐Aminophosphonic Acid Derivatives from Trisubstituted α‐Aminophosphonates
Authors: Vicario Javier , Ezpeleta José María , Palacios Francisco 
Published: September 2012

AbstractAn enantioselective synthesis of tetrasubstituted α‐phosphono‐α‐amino nitriles through asymmetric cyanation of α‐ketiminophosphonates catalyzed by Cinchona alkaloids is reported. α‐Ketiminophosphonates are generated, in a very efficient synthetic protocol, by oxidation of trisubstituted α‐aminophosphonates.
Corrosion rate of carbon steel and aluminum alloy in sulfuric acid and hydrochloric acid solutions accelerated by microwave heating
Authors: Wang Yinglong , Wang Dezhi , Zhang Hongzhe 
Published: September 2012

ABSTRACTCorrosion behavior of carbon steel and aluminum alloy in hydrochloric acid and sulfuric acid solutions was studied using microwave heating and conventional water bath heating method, respectively. The effect of microwave heating on corrosion time was investigated by using weight loss method and the surface morphology of metals was studied by using scanning electron microscope, too. The conclusion that microwave heating is a good method to accelerate corrosion process can be obtained from the test results and surface morphology. Both the mass loss of the metals and the pH of the solutions increase with the microwave power increasing and the immersion time prolonging. The mass loss of the specimens heated by microwave is notably higher than that heated by water bath under the same corrosion time and temperature. For all of the four corrosion systems, the corrosion results obtained using microwave heating at 75 °C lasting 40 h are equivalent to that obtained by using water bath at 55 °C, lasting 168 h, whereas more than 70 h is needed to achieve the same corrosion results by using the water bath at 75 °C. © 2012 Curtin University of Technology and John Wiley & Sons, Ltd.
Thermoplastic polyurethane composites prepared from mechanochemically activated waste cotton fabric and reclaimed polyurethane foam
Authors: Wang Mengya , Zhang Xinxing , Zhang Wei , Tian Dong , Lu Canhui 
Published: September 2012

AbstractIn this study, thermoplastic polyurethane (PU) composites were successfully prepared from waste cotton fabric (WCF) and reclaimed PU foam derived from the shoe manufacturing industry through melt mixing. A pan‐mill‐type mechanochemical reactor made in our laboratory was applied to determine the mechanochemical activation of WCF. The intramolecular and intermolecular hydrogen bonds of WCF could be broken up through pan milling because of the fairly strong shearing and squeezing forces. Moreover, the simultaneous reduction of particle size and the large increment of the specific surface area of pan‐milled WCF benefitted its dispersion and the interfacial adhesion with the PU matrix. Mechanochemically activated WCF could be used as a low cost but effective functional additive to enhance the melt processability and mechanical properties of PU/WCF composites. With the addition of 75‐phr WCF, the heat shrinkage of the melt‐reprocessed PU decreased sharply from its original 11.4 to 0.3%. Meanwhile, the tensile strength of the composites was enhanced from 10.3 to 23.2 MPa. © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013
Total replacement of solvent in polyurethane synthesis using carbon dioxide soluble 1,3‐dichlorodistannoxane catalysts
Authors: Gartia Yashraj , Moore Josh , Felton Charlette , Pulla Sharon , Berry Brian , Munshi Pradip , Ghosh Anindya 
Published: September 2012

AbstractThis work demonstrates catalytic synthesis of polyurethanes using 1,3‐dichlorodistannoxane catalysts (1) in carbon dioxide (CO2) and carbon dioxide expanded liquids (CXL). Catalytic polyurethane synthesis was also performed in pure organic solvent (dimethylformamide) for comparison. In this study, mainly, 4, 4′‐methylene‐bis‐(phenyl isocyanate) (MDI) as the diisocyanate precursor and ethylene glycol (EG) as the diol precursor were used for polyurethane synthesis. In addition to MDI, hexamethylene diisocyanate (HDI), toluene diisocyanate (TDI), and p‐isocyanatobenzylisocyanate (PIBI) were also used for polyurethane synthesis with different diols or triol in CO2. Polyurethanes with a molecular weight ranging from 3000 to 70,000 were synthesized depending upon the combination of diisocyanate and diol used. Comparable yields of polyurethanes were obtained using an all butyl group substituted (1a) catalyst in CO2 (55 bars, 50°C) and in DMF (50°C). Additionally, the yield and polydispersity index (PDI) of polymer formed in neat CO2 was comparable with those synthesized in the largely used organic solvent DMF. Interestingly, catalyst 1a in CXL (55 bars, 50°C) gave higher yields, and polymers with lower PDI (1.19). Reactions carried out in scCO2 at 145 bars using PIBI and EG were found to be about three times faster than the reaction carried out in DMF. © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013
Preparation and characterization of EPDM rubber modified with in situ generated silica
Authors: Morselli Davide , Bondioli Federica , Luyt Adriaan S. , Mokhothu Thabang H. , Messori Massimo 
Published: September 2012

AbstractThis article is concerned with the preparation of a filled elastomer by means the nonconventional bottom‐up approach to polymer composites, alternatively with the conventional mechanical compounding of preformed filler particles with rubber. EPDM rubber was modified with in situ generated silica particles prepared by means of a sol–gel process adopting a solution process. The used synthetic procedure permitted the preparation of highly filled rubbers (up to 40 wt % of silica) with silica particle dimensions ranging from 0.2 to 2 μm. Equilibrium swelling and extraction tests indicated a hindering effect of the presence of in situ generated silica on the vulcanization process which reduced the cross linking degree of the rubber matrix. Both tensile tests and dynamic–mechanical analysis showed a significant improvement in the mechanical properties due to the presence of the reinforcing filler, with an enhancement more significant than that expected from a simple hydrodynamic reinforcing mechanism. © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013
Myoinjury transiently activates muscle antigen–specific CD8+ T cells in lymph nodes in a mouse model
Authors: Liao Hua , Franck Emilie , Fréret Manuel , Adriouch Sahil , Baba‐Amer Yasmine , Authier Francois‐Jerome , Boyer Olivier , Gherardi Romain K. 
Published: September 2012

AbstractObjectiveTo investigate the influence of myoinjury on antigen presentation to T cells in draining lymph nodes (LNs).MethodsMuscle crush was performed in mice injected with exogenous ovalbumin (OVA) and in transgenic SM‐OVA mice expressing OVA as a muscle‐specific self antigen. Antigen exposure and the resulting stimulation of T cell proliferation in draining LNs was assessed by transferring carboxyfluorescein succinimidyl ester (CFSE)–labeled OVA‐specific CD8+ and CD4+ T cells from OT‐I and OT‐II mice and by measuring the dilution of CFSE, which directly reflects their proliferation. The role of monocyte‐derived dendritic cells (DCs) in T cell priming was assessed using pharmacologic blockade of DC migration. Immunofluorescence was used to detect CD8+ T cells, inflammatory monocyte‐derived DCs, and type I major histocompatibility complex (MHC)–expressing myofibers in crushed muscle, and to assess expression of perforin, interferon‐γ (IFNγ), interleukin‐2 (IL‐2), IL‐10, and transforming growth factor β1 (TGFβ1).ResultsOVA injection into intact muscle induced strong proliferation of CD4+ and CD8+ T cells, indicating efficient exposure of soluble antigens in draining LNs. OVA‐specific CD8+ T cell proliferation in draining LNs of SM‐OVA mice required myoinjury and was unaffected by pharmacologic inhibition of monocyte‐derived DC migration. On day 7 postinjury, activated CD8+ T cells expressing perforin, IFNγ and IL‐2 were transiently detected in crushed muscle, and these cells were in close contact with class I MHC–positive regenerating myofibers. Beginning on day 7, the immunosuppressive cytokines IL‐10 and TGFβ1 were conspicuously expressed by CD11b+ cells, and CD8+ T cells rapidly disappeared from the healing muscle.ConclusionMyofiber damage induces an episode of muscle antigen–specific CD8+ T cell proliferation in draining LNs. Activated CD8+ T cells transiently infiltrate the injured muscle, with prompt control by immunosuppressive cues. Inadequate control might favor sustained autoimmune myositis.