bluuebunny/crossref_metadata_2025_split huggingface dataset:
Propargyl–Allenyl Isomerizations and Electrocyclizations for the Functionalization of Phosphonium Salts: One‐Pot Synthesis of Polysubstituted Vinylbenzenes and Naphthalenes
Authors: Zhao Guoqing , Zhang Qianyun , Zhou Hongwei 
Published: November 2013

AbstractPhosphonium salts are widely used in organic synthesis as the precursor of Wittig reagents but highly functionalized phosphonium salts are not readily available. We have developed a sequence of propargyl–allenyl isomerizations and electrocyclizations for the functionalization of phosphonium salts via simple starting materials, which may provide an efficient one‐pot synthesis of polysubstituted vinylbenzenes and naphthalenes.magnified image
Evidence for long‐term migration on the Balkan Peninsula using dental and cranial nonmetric data: Early interaction between Corinth (Greece) and its colony at Apollonia (Albania)
Authors: McIlvaine Britney Kyle , Schepartz Lynne A. , Larsen Clark Spencer , Sciulli Paul W. 
Published: November 2013

ABSTRACTThis article seeks to identify “Greeks” and “non‐Greeks” in “mixed” mortuary contexts in a Greek colony. Specifically, we test the hypothesis that Illyrian and Greek individuals lived and were buried together at the Corinthian colony of Apollonia, Albania (established ca. 600 BC). The pattern of human biological interaction at Apollonia is tested by identifying variation in genetic relatedness using biodistance analysis of dental and cranial nonmetric traits for three sites: Apollonia (n= 116), its founder‐city Corinth (n= 69), and Lofkënd (n= 108), an inland site near Apollonia pre‐dating colonization. Logistic regression analysis estimates that individuals from colonial Apollonia are most closely related to prehistoric Illyrian populations (from Lofkënd and prehistoric Apollonia), rather than Greeks (from Corinth). The phenotypic similarity between colonial Apollonia and prehistoric Illyria suggests that there was a large Illyrian contribution to the gene pool at the colony of Apollonia. However, some trait combinations show low biological distances among all groups, suggesting homogeneity among Illyrian and Greek populations (assessed through pseudo‐Mahalanobis'D2). The degree of phenotypic similarity suggests shared ancestry and long‐term migration throughout these regions. The impacts of missing data and small sample sizes are also considered. Am J Phys Anthropol 153:236–248, 2014. © 2013 Wiley Periodicals, Inc.
Effect of processing parameters on the surface resistivity of ethylene propylene diene terpolymer/multiwalled carbon nanotube nanocomposites
Authors: Seo Geum‐Bae , Kim Gue‐Hyun 
Published: November 2013

ABSTRACTIn this study, ethylene propylene diene terpolymer (EPDM) is melt‐mixed with multiwalled carbon nanotube (MWCNT). To realize full‐scale application of MWCNT to the rubber industries, the effect of melt‐processing parameters on the surface resistivity in the rubber/MWCNT nanocomposites should be well understood. The effect of rotor speed, mixing temperature, and annealing time on the surface resistivity of the EPDM/MWCNT nanocomposites has been investigated. The surface resistivity of EPDM/MWCNT nanocomposites with 3 phr MWCNT increases with increasing the rotor speed and decreasing the mixing temperature. Tensile strength and tensile modulus of EPDM/MWCNT (3 phr) nanocomposites are higher than those of EPDM, respectively. For the nanocomposite with 3 phr MWCNT loadings, surface resistivity increases as the annealing time at room temperature increases. This is the first report that surface resistivity of rubber/MWCNT nanocomposites increases significantly on annealing at room temperature. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014, 131, 40129.
Influence of a sorbitol‐based nucleating agent modified with silsesquioxanes on the non‐isothermal crystallization of isotactic polypropylene
Authors: Barczewski Mateusz , Dobrzyńska‐Mizera Monika , Dudziec Beata , Sterzyński Tomasz 
Published: November 2013

ABSTRACTThis article investigates the effect of modifying the polypropylene (iPP) α‐phase nucleating agent 1,3:2,4‐bis(3,4‐dimethylbenzylidene) sorbitol (DMDBS) with tetrasilanolphenyl silsesquioxane (phPOSS). It has been proven that an increasing amount of silsesquioxane leads to differences in the crystallization behavior. What is more, it has been observed that the nucleation effect that results from the addition of sorbitol derivatives is suppressed by phPOSS activity. To understand the influence of phPOSS addition on the crystallization kinetics of PP/DMDBS/phPOSS composites that have been prepared by melt processing in a twin screw extruder, differential scanning calorimetry, rotational rheometry and Fourier transform infrared spectroscopy are performed. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014, 131, 40131.
Adhesion of ultrahigh molecular weight polyethylene plates photografted with hydrophilic monomers and evaluation of failure location by X‐ray photoelectron spectroscopy
Authors: Yoshida Haruka , Mochizuki Kouhei , Yamada Kazunori 
Published: November 2013

ABSTRACTIn this study, methacrylic acid (MAA) and acrylic acid (AA) were photografted onto the ultrahigh molecular weight polyethylene (UHMWPE) plates at different monomer concentrations and temperatures, and the grafted UHMWPE plates were bonded with aqueous polyvinyl alcohol (PVA) solutions. The tensile shear adhesive strength of both grafted UHMWPE plates was also discussed in relation to wettability and water absorptivity. The location of failure was also estimated by X‐ray photoelectron spectroscopy (XPS). Wettability of the MAA‐grafted UHMWPE plates became constant, when the UHMWPE surface was fully covered with grafted PMAA chains. Conversely, wettability of the AA‐grafted UHMWPE plates passed through the maximum value and then gradually decreased against the grafted amount probably due to aggregation of grafted PAA chains. Water absorptivity of the grafted layers formed at lower monomer concentrations or temperatures sharply increased at lower grafted amounts. The adhesive strength increased with the grafted amount and substrate breaking was observed at higher grafted amounts, indicating that a main factor to increase the adhesive strength is the formation of a grafted layer by shorter grafted polymer chains and/or the restriction of the location of photografting to the outer surface region. In addition, surface analysis by XPS showed that failure occurred in the boundary between the layer composed of grafted polymer chains and PVA chains and the ungrafted layer at a low adhesive strength, and the location of failure was shifted to the grafted layer containing PVA chains at the grafted amount increased. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014, 131, 40133.
Multifunctionalization of novolac epoxy resin and its influence on dielectric, thermal properties, viscoelastic, and aging behavior
Authors: Zhao Songfang , Zhang Guoping , Sun Rong , Wong Chingping 
Published: November 2013

AbstractIn this article, novolac epoxy was functionalized using p‐hydroxybenzoic acid as pendent groups, which offered weak acidic environment and were cured with methyl etherified amino resin (HMMM). Its chemical structure was characterized by Fourier transform infrared (FT‐IR), 1H nuclear magnetic resonance (1H NMR) and differential scanning calorimeter (DSC). To comprehensively investigate its performance, HMMM was used as a curing agent. The modified epoxy exhibited higher storage modulus, lower thermal expansion coefficient, better moisture resistance, better resistance to degradation and lower dielectric constant. Furthermore, the aging behavior was investigated using dynamic mechanical analysis and scanning electron microscopy, which showed that the activation energy of glass transition increased after aging and cured MDEN was more difficult to age. Moreover, the relation between storage modulus and curing rate was established; the low curing rate of MDEN decreased the growth rate of storage modulus and reduced the internal stress, which was beneficial for processing. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014, 131, 40157.
Online Speed Controller Scheme Using Adaptive Supervisory TSK‐fuzzy CMAC for Vector Controlled Induction Motor Drive
Authors: Wang S. Y. , Tseng C. L. , Chiu C. J. 
Published: November 2013

AbstractThis study proposes and implements a novel adaptive supervisory Takagi–Sugeno–Kang fuzzy cerebellar model articulation controller (adaptive supervisory TSK‐FCMAC) in a sensorless vector control for induction motor drives. The proposed adaptive supervisory TSK‐FCMAC includes a supervisory controller and an adaptive TSK‐FCMAC. The later controller incorporates the TSK‐fuzzy control with an adaptive CMAC to perform the desired control action. Adaptive supervisory TSK‐FCMAC is derived using the Lyapunov approach and guarantees the learning error convergence. This study experimentally investigates three intelligent control schemes (adaptive supervisory TSK‐FCMAC, adaptive TSK‐FCMAC, and adaptive CMAC) and uses the root mean square error performance index to evaluate each scheme. Results show that the proposed adaptive supervisory TSK‐FCMAC provides substantially improved performance over other schemes.
Unfalsifying Pole Locations Using a Fading Memory Cost Function
Authors: Jin Huiyu , Chang Michael W. , Safonov Michael G. 
Published: November 2013

AbstractGiven a feedback control system with an unknown plant, the problem of choosing a stabilizing controller is considered. Working within the framework of unfalsified adaptive control, we consider a finite‐dimensional linear time invariant system as a special case of the standard adaptive configuration. A fading memory cost function is presented in which the influence of older data is reduced exponentially. With this cost function, the location of the poles can be detected with only input‐output data. Compared with existing results, the cost function can detect changes affecting stability sooner and be used in adaptive switching control to improve the performance of controller switching.
Systematic review of the efficacy of cilostazol, naftidrofuryl oxalate and pentoxifylline for the treatment of intermittent claudication (Br J Surg 2012; 99: 1630–1638)
Authors: Roset P N 
Published: November 2013

Abstract
The Editors welcome topical correspondence from readers relating to articles published in the Journal. Responses should be sent electronically via the BJS website (www.bjs.co.uk). All letters will be reviewed and, if approved, appear on the website. A selection of these will be edited and published in the Journal. Letters must be no more than 250 words in length.
ChemInform Abstract: Novel Ternary Compound Ce2RuAl: Synthesis, Crystal Structure, Magnetic and Electrical Properties.
Authors: Murashova E. , Kurenbaeva Zh. , Tursina A. , Marushina E. , Yaroslavtsev A. , Leshchev D. , Seropegin Y. , Kaczorowski D. 
Published: November 2013

AbstractIntermetallic Ce2RuAl is prepared by arc melting of the elements followed by annealing at 823 K.
ChemInform Abstract: Synthesis and Luminescence Properties of Novel Red‐Emitting Phosphor InNbO4:Eu3+ for White‐Light Emitting Diodes.
Authors: Tang A. , Zhang D. F. , Yang Liu 
Published: November 2013

AbstractSingle phase InNbO4:Eu3+ is prepared by solid state reaction of a stoichiometric mixture of In2O3, Nb2O5, and Eu2O3 (1255 °C, 6 h).
ChemInform Abstract: Asymmetric Organocatalytic Aldol Reaction in Water: Mechanistic Insights and Development of a Semi‐Continuously Operating Process.
Authors: Rulli Giuseppe , Frederiksen Kim A. , Duangdee Nongnaphat , Bonge‐Hansen Tore , Berkessel Albrecht , Groeger Harald 
Published: November 2013

AbstractA detailed study on the influence of the catalyst loading on conversion and enantioselectivity of the aldol reaction between acetone and an aromatic aldehyde is presented.
ChemInform Abstract: A Strategy Enabling Enantioselective Direct Conjugate Addition of Inert Aryl Methane Nucleophiles to Enals with a Chiral Amine Catalyst under Mild Conditions.
Authors: Li Tengfei , Zhu Jin , Wu Deyan , Li Xiangmin , Wang Sinan , Li Hao , Li Jian , Wang Wei 
Published: November 2013

AbstractAn organocatalytic enantioselective conjugate addition of aryl methyl nucleophiles to a wide range of α,β‐unsaturated aldehydes is developed.
ChemInform Abstract: Reprint of: Enantiodivergent Hydroboration Reactions of a Racemic Allenylsilane with Diisopinocampheylborane and Curtin—Hammett Controlled Double Asymmetric Crotylboration Reactions of (S)‐E‐α‐Phenyldimethylsilyl (ddiisopinocampheyl)‐crotylborane.
Authors: Chen Ming , Roush William R. 
Published: November 2013

AbstractThis is a reprint of a study erroneously published in an earlier issue, see ChemInform 2013 45 023.
ChemInform Abstract: Cobalt‐Catalyzed ortho Alkylation of Aromatic Imines with Primary and Secondary Alkyl Halides.
Authors: Goa Ke , Yoshikai Naohiko 
Published: November 2013

AbstractThe stereochemical outcome of the reaction of secondary alkyl halides like (IX) suggest that the present reaction involves single‐electron transfer from a cobalt species to the alkyl halide to generate the corresponding alkyl radical.
ChemInform Abstract: Isolation of Magnetic Material from Fly Ash and Its Catalytic Performance for N‐Acetylation under Solvent Free Conditions.
Authors: Dhokte Aashish O. , Shaikh Uzmaparveen K. , Lande Machhindra K. , Arbad Balasaheb R. 
Published: November 2013

AbstractMagnetic ferrite‐type material, isolated from fly ash, is found to be an excellent catalyst for the efficient and fast N‐acylation of aromatic amines under solvent‐free conditions.
ChemInform Abstract: Rapid Synthesis of Unsaturated Alcohols under Mild Conditions by Highly Selective Hydrogenation.
Authors: Tamura Masazumi , Tokonami Kensuke , Nakagawa Yoshinao , Tomishige Keiichi 
Published: November 2013

AbstractIr/ReOx supported on silica shows high activity and selectivity in the hydrogenation of unsaturated aldehydes (I) to the corresponding unsaturated alcohols (II) at a low H2 pressure and a low temperature.
ChemInform Abstract: Primary Alkylboronic Acids as Highly Active Catalysts for the Dehydrative Amide Condensation of α‐Hydroxycarboxylic Acids.
Authors: Yamashita Risa , Sakakura Akira , Ishihara Kazuaki 
Published: November 2013

AbstractThe title reaction allows the direct amination of a variety of α‐hydroxycarboxylic acids with primary and secondary amines.
ChemInform Abstract: Sodium Hydroxide Catalyzed N‐Alkylation of (Hetero) Aromatic Primary Amines and N1,C5‐Dialkylation of 4‐Phenyl‐2‐aminothiazoles with Benzyl Alcohols.
Authors: Donthiri Ramachandra Reddy , Pappula Venkatanarayana , Mohan Darapaneni Chandra , Gaywala Hiren H. , Adimurthy Subbarayappa 
Published: November 2013

AbstractThis novel method provides an access to a wide range of different substituted aminoheterocycles under mild conditions by using catalytic amounts of NaOH or equimolar amounts in case of the synthesis of compounds (VII) and (IX).
ChemInform Abstract: Diazoacetoacetate Enones for the Synthesis of Diverse Natural Product‐Like Scaffolds.
Authors: Shanahan Charles S. , Truong Phong , Mason Savannah M. , Leszcynski John S. , Doyle Michael P. 
Published: November 2013

AbstractReadily prepared diazoesters (III) are investigated in the Sc(OTf)3‐catalyzed reaction with a variety of carbon nucleophiles or anisidine resulting in the formation of a diverse range of Michael adducts.
ChemInform Abstract: Memory of Chirality Approach to the Enantiodivergent Synthesis of Chiral Benzo[d]sultams.
Authors: Foschi Francesca , Tagliabue Aaron , Mihali Voichita , Pilati Tullio , Pecnikaj Ilir , Penso Michele 
Published: November 2013

AbstractAn interesting protocol is described to convert single enantiomeric sulfonamides (I) in a stereodivergent fashion into sultams.
ChemInform Abstract: Aerobic Oxidation of Sulfides with a Vitamin B2‐Derived Organocatalyst.
Authors: Imada Yasushi , Tonomura Itoko , Komiya Naruyoshi , Naota Takeshi 
Published: November 2013

AbstractThe title catalyst exhibits high catalytic activity for the selective oxidation of sulfides to sulfoxides with molecular oxygen as the oxidant.
ChemInform Abstract: Asymmetric Allylation/Ring Closing Metathesis: One‐Pot Synthesis of Benzo‐Fused Cyclic Homoallylic Amines. Application to the Formal Synthesis of Sertraline Derivatives.
Authors: Fustero Santos , Lazaro Ruben , Herrera Lidia , Rodriguez Elsa , Mateu Natalia , Barrio Pablo 
Published: November 2013

AbstractA stepwise process consisting of asymmetric allylation of imines of type (I) and following ring‐closing metathesis of the resulting dienes (III) is developed to synthesize cyclic homoallylic amines.
ChemInform Abstract: Synthesis and Cytotoxicity on Human Leukemia Cells of Furonaphthoquinones Isolated from Tabebuia Plants.
Authors: Inagaki Ryuta , Ninomiya Masayuki , Tanaka Kaori , Watanabe Kunitomo , Koketsu Mamoru 
Published: November 2013

AbstractSeveral methoxylated furonaphthoquinones, isolated from Tabebuia plants, are prepared via a direct one‐pot cascade reaction via Sonogashira coupling and intramolecular cyclization.
ChemInform Abstract: Cycloaddition‐Based Formal C—H Alkynylation of Isoindoles Leading to the Synthesis of Air‐Stable Fluorescent 1,3‐Dialkynylisoindoles.
Authors: Ohmura Toshimichi , Kijima Akihito , Komori Yusuke , Suginome Michinori 
Published: November 2013

AbstractBoth unsymmetrical and symmetrical 1,3‐dialkynylisoindoles are prepared via [4 + 2] cycloaddition of isoindoles or isoindolines with bromoalkynes followed by ring opening.
ChemInform Abstract: Enantioselective Fluoroamination: 1,4‐Addition to Conjugated Dienes Using Anionic Phase‐Transfer Catalysis.
Authors: Shunatona Hunter P. , Frueh Natalja , Wang Yi‐Ming , Rauniyar Vivek , Toste F. Dean 
Published: November 2013

AbstractThis is the first report of a metal‐free catalytic asymmetric 1,4‐fluoroamination of conjugated dienes.
ChemInform Abstract: Peculiar Electrophilic Heterocyclization of 5‐Allyl‐6‐thioxopyrazolo[3,4‐d]pyrimidin‐4‐one.
Authors: Svaljavyn O. V. , Onysko M. Yu. , Turov A. V. , Vlasenko Yu. G. , Lendel V. G. 
Published: November 2013

AbstractDepending on the substituent on the exocyclic sulfur, 5‐allyl‐6‐thioxopyrazolo[3,4‐d]pyrimidin‐4‐one (I) can be anellated on halogenation as either thiazoline or oxazoline ring.
ChemInform Abstract: A Highly Regio‐ and Diastereoselective Phosphane‐Catalyzed [3 + 2] Annulation of Morita—Baylis—Hillman Carbonates with Cyclic N‐Acyl Ketimines.
Authors: Yang Li‐Jun , Cai Hua , Nie Jing , Ma Jun‐An 
Published: November 2013

AbstractA series of N‐fused tricyclic products are obtained under mild conditions.
ChemInform Abstract: Pd(II)‐Catalyzed Phosphorylation of Aryl C—H Bonds.
Authors: Feng Chen‐Guo , Ye Mengchun , Xiao Kai‐Jiong , Li Suhua , Yu Jin‐Quan 
Published: November 2013

AbstractA Pd(II)‐catalyzed C—H phosphorylation reaction is developed using heterocycle‐directed ortho‐palladation.
ChemInform Abstract: Synthesis of (4′R)‐Azido‐(2′R)‐2′‐deoxy‐2′‐C‐methyluridine and Its Esters by Direct Iodide Displacement.
Authors: Benhaim Cyril , et al. et al. 
Published: November 2013

AbstractAn optimized route to the anti‐infective nucleoside intermediate (III) is developed using direct iodine displacement at C‐5′ by a tetrabutylammonium carboxylate.
ChemInform Abstract: Formation of Iron Oxide Nanocrystals by Reactions of Iron with Supercritical Fluids H2O and H2O/CO2.
Authors: Vostrikov A. A. , Shishkin A. V. , Fedyaeva O. N. , Sokol M. Ya. , Zaikovskii A. V. 
Published: November 2013

AbstractFe3O4, FeO, and traces of γ‐Fe2O3 are obtained by supercritical fluid oxidation of Fe particles using H2O or a H2O/CO2 mixture in a horizontal tubular stainless steel reactor.
ChemInform Abstract: Ionically Conducting Ceramics as Active Catalyst Supports
Authors: Vernoux Philippe , Lizarraga Leonardo , Tsampas Mihalis N. , Sapountzi Foteini M. , De Lucas‐Consuegra Antonio , Valverde Jose‐Luis , Souentie Stamatios , Vayenas Costas G. , Tsiplakides Dimitris , Balomenou Stella , et al. et al. 
Published: November 2013

AbstractReview: 472 refs.
A semiparametric linear transformation model to estimate causal effects for survival data
Authors: Lin Huazhen , Li Yi , Jiang Liang , Li Gang 
Published: November 2013

AbstractSemiparametric linear transformation models serve as useful alternatives to the Cox proportional hazard model. In this study, we use the semiparametric linear transformation model to analyze survival data with selective compliance. We estimate regression parameters and the transformation function based on pseudo‐likelihood and a series of estimating equations. We show that the estimators for the regression parameters and transformation function are consistent and asymptotically normal, and both converge to their true values at the rate of, the convergence rate expected for a parametric model. The practical utility of the methods is confirmed via simulations as well as an application of a clinical trial to evaluate the effectiveness of sentinel node biopsy in guiding the treatment of invasive melanoma.The Canadian Journal of Statistics42: 18–35; 2014 © 2013 Statistical Society of Canada
Polymeric Heterogeneous Catalysts of Transition‐Metal Oxides: Surface Characterization, Physicomechanical Properties, and Catalytic Activity
Authors: Nhi Bui Dinh , Akhmadullin Renat Maratovich , Akhmadullina Alfiya Garipovna , Samuilov Yakov Dmitrievich , Aghajanian Svetlana Ivanova 
Published: November 2013

AbstractWe investigate the physicomechanical properties of polymeric heterogeneous catalysts of transition‐metal oxides, specifically, the specific surface area, elongation at break, breaking strength, specific electrical resistance, and volume resistivity. Digital microscopy, Fourier‐transform infrared spectroscopy, X‐ray diffraction, scanning electron microscopy, and energy‐dispersive analysis are used to study the surfaces of the catalysts. The experimental results show that polymeric heterogeneous catalysts of transition‐metal oxides exhibit high stability and can maintain their catalytic activity under extreme reaction conditions for long‐term use. The oxidation mechanism of sulfur‐containing compounds in the presence of polymeric heterogeneous catalysts of transition‐metal oxides is confirmed. Microstructural characterization of the catalysts is performed by using X‐ray computed tomography. The activity of various catalysts in the oxidation of sulfur‐containing compounds is determined. We demonstrate the potential application of polymeric heterogeneous catalysts of transition‐metal oxides in industrial wastewater treatment.
Ontogeny of consummatory successive negative contrast in rats
Authors: Suárez Andrea B. , Mustaca Alba E. , Pautassi Ricardo M. , Kamenetzky Giselle V. 
Published: November 2013

ABSTRACTConsummatory successive negative contrast (cSNC) occurs when organisms repeatedly exposed to a high‐magnitude reward are suddenly given a low‐magnitude reward. This results in a significant reduction in the consumption of the devalued reinforcer, at a level even below that of a group which had been always exposed to the low‐magnitude reinforcer. A scarcity of animal studies assessed the expression of this phenomenon during early development. Three experiments assessed age of cSNC onset in preweanling rats. Percent body weight gained (%BWG) and taste reactions associated with reinforcement devaluation were measured. A reduction in %BWG and a significant increase in emission of aversive hedonic behaviors, indicative of cSNC, occurred on postnatal day 18 (PD 18; Experiments 1 and 2), but not on PD 14 or PD 17 (Experiments 3a and 3b). The neurobiological mechanisms underlying these effects and theoretical implications are discussed. © 2013 Wiley Periodicals, Inc. Dev Psychobiol 56: 989–998, 2014.