bluuebunny/crossref_metadata_2025_split huggingface dataset:
Numerical simulation study of the T‐peel behavior of coated fabric films used in inflatable structures
Authors: Yang Yabin , Zeng Pan , Lei Liping 
Published: August 2014

ABSTRACTA simple and reliable finite element method was developed to analyze the T‐peel behavior of fabric coated with thin films. The material model was constructed simply by a tensile test of the coating and the coated fabric. In addition, the influence of the welding parameters on the mechanical properties of the welded zone was considered. Although some material characters were neglected, the material model was found to be convenient for engineering applications. The reliability was examined by a comparison of the numerical results with the experiments. A T‐peel test was conducted, and a camera configured with an optical microscope lens was used to observe the material flow from the thickness view. The load–displacement curve predicted by the simulation agreed well with the experimental results. Small voids were detected when the sample was near fracture. These places were consistent with the simulation results and showed where the maximum stress–strain was located. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 41299.
Synthesis of polyimides with low viscosity and good thermal properties via copolymerization
Authors: Zhang Chunhong , Su Guangdong , Chen Hui , Sun Ying , Song Hairui , Tong Lili 
Published: August 2014

ABSTRACTNovel polyimides were successfully synthesized through copolymerization of diamine monomers p‐phenylenediamine (p‐PDA) and 4,4'‐diaminodiphenylmethane (MDA) with different proportions and 2,3,3',4'‐biphenyltetracarboxylic dianhydride (a‐BPDA) using 4‐phenylethynylphthalic anhydride (4‐PEPA) as an end‐capping agent. The melt rheological properties, thermal properties, and crystallinity of PI oligomers were investigated via rheometer, dynamic mechanical analysis (DMA), thermal gravimetric analysis (TGA), differential scanning calorimetry (DSC), and X‐ray diffraction (XRD). The results indicate that melt viscosity and solubility of the PI oligomers were improved, but the glass transition temperature (Tg) and crystallinity decreased with the increasing molar ratio of MDA. PI oligomer 3 with the molar ratio of MDA/p‐PDA = 2/1 shows a lower minimum melt viscosity (66 Pa.s) at 313°C and better solubility in aprotic solvents. The corresponding PI‐3 exhibits a high glass transition temperature of 406°C and excellent thermal stability. This copolyimide shows good processability and thermal properties, and could become a good candidate of matrix resins for high performance composites in aerospace field. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 41303.
Polyurethanes derived from carbohydrates and cystine‐based monomers
Authors: Begines Belén , Zamora Francisca , de Paz M. Violante , Hakkou Khalid , Galbis Juan A. 
Published: August 2014

ABSTRACTLinear [m,n]‐type polyurethanes (PUs) fully based on renewable materials are synthesized by interfacial polycondensation reaction of diamines derived from the amino‐acid cystine with (bis)chloroformates derived from alditols having L‐arabino or xylo configuration. The degradability of the new PUs has been enhanced by the introduction of disulfide linkages into the polymer backbone leading to a new group of stimulus‐responsive sugar‐based polyurethanes able to be degraded by glutathione under physiological conditions. All these polyurethanes are stable up to around 245°C, decomposing at higher temperatures through a one‐stage mechanism. The new materials display high chemical homogeneity and degradability in both hydrolytic and reductive environments, with reductions of above 90% in Mw. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 41304.
Study on the preparation and thermal shrinkage properties of nano‐SiO2/UHMWPE/HDPE blend microporous membranes
Authors: Wu Yin‐Cai , Cui Yi‐Hua , Jin Huai‐Long , Ning Chong‐Chong 
Published: August 2014

ABSTRACTNano‐SiO2/UHMWPE/HDPE blend microporous membranes (NBMs) with different content of nano‐SiO2 particles were prepared via thermally induced phase separation process. Thermogravimetric analysis was used to investigation of the amount of nano‐SiO2 particles reserved in NBMs. This approach showed that about 59% of total content of nano‐SiO2 particles reserved in NBMs. The formation and development of the interface pores were studied by scanning electron microscopy. NBMs performance was characterized by a variety of metrics including thermal shrinkage, melting and crystallization behavior, porosity and pore diameter, and permeability. The results indicated that nano‐SiO2 particles served as nucleating agent increasing the crystalline of NBMs. The comprehensive properties of NBMs were optimum when the content of nano‐SiO2 particles was 1%. Compared with pure HDPE separators, NBMs exhibit higher porosity and lower thermal shrinkage due to its high crystalline and the enrichment of UHMWPE chains. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 41321.
Biodiversity values of remnant freshwater floodplain lagoons in agricultural catchments: evidence for fish of the Wet Tropics bioregion, northern Australia
Authors: Arthington Angela H. , Godfrey Paul C. , Pearson Richard G. , Karim Fazlul , Wallace Jim 
Published: August 2014

Abstract

Tropical floodplain wetlands are among the world's most threatened and poorly documented freshwater ecosystems. This paper describes patterns of fish diversity in remnant freshwater lagoons in relation to natural environmental gradients and impacts of agriculture in the Tully–Murray catchment, Queensland Wet Tropics bioregion (QWT), in north‐eastern Australia.
Floodplain lagoons supported 21 of 29 native fish species recorded from freshwater habitats of these rivers, including three species not typically found in main river channels or tributaries, and six that require access to saline areas for spawning or larval development. Eight species favoured lagoons during their early life history, highlighting the vital role of these water bodies in providing nursery habitat.
Assemblage composition differed with distance from the coast, position on the floodplain, water quality and habitat. Aquatic vegetation discriminated lagoons and habitat patches within lagoons, and fish species richness was lower in patches of exotic ponded‐pasture grasses.
Although the lagoons are surrounded by intensive agriculture, especially sugarcane plantations, they are in good ecological condition, largely because of retention of some riparian vegetation, and frequent flushing by high stream flows. They offer opportunities to conserve taxonomic and functional biodiversity that is at present poorly protected by terrestrial reserves focused mainly on forested uplands. Of the 21 native species recorded, only one has >20% of its QWT distribution protected in IUCN category II protected areas (National Parks), and nine species have <10% of their QWT distribution in protected areas.
Opportunities to protect tropical freshwater fish diversity may be lost if threatening processes are not held in check through maintenance of natural flow regimes and floodplain connectivity, protection of riparian vegetation and aquatic habitat structure, continued application of best management farming practices and off‐reserve protection of freshwater habitats on public and private lands. Copyright © 2014 John Wiley & Sons, Ltd.
Cisplatin/gemcitabine or oxaliplatin/gemcitabine in the treatment of advanced biliary tract cancer: a systematic review
Authors: Fiteni Frédéric , Nguyen Thierry , Vernerey Dewi , Paillard Marie‐Justine , Kim Stefano , Demarchi Martin , Fein Francine , Borg Christophe , Bonnetain Franck , Pivot Xavier 
Published: August 2014

AbstractCisplatin/gemcitabine association has been a standard of care for first‐line regimen in advanced biliary tract cancer nevertheless oxaliplatin/gemcitabine regimen is frequently preferred. Because comparative effectiveness in clinical outcomes of cisplatin‐ versus oxaliplatin‐containing chemotherapy is not available, a systematic review of studies assessing cisplatin/gemcitabine or oxaliplatin/gemcitabine chemotherapies in advanced biliary tract cancer was performed. Published studies evaluating cisplatin/gemcitabine or oxaliplatin/gemcitabine in advanced biliary tract cancer were included. Each study was weighted according to the number of patients included. The primary objective was to assess weighted median of medians overall survival (mOS) reported for both regimens. Secondary goals were to assess weighted median of medians progression‐free survival (mPFS) and toxic effects were pooled and compared within each arm. Thirty‐three studies involving 1470 patients were analyzed. In total, 771 and 699 patients were treated by cisplatin/gemcitabine and oxaliplatin/gemcitabine, respectively. Weighted median of mOS was 9.7 months in cisplatin group and 9.5 months in oxaliplatin group. Cisplatin‐based chemotherapy was significantly associated with more grade 3 and 4 asthenia, diarrhea, liver toxicity, and hematological toxicity. Sensitivity analysis including only the studies with the standard regimen of cisplatin (25–35 mg/m2 administered on days 1 and 8) showed that the weighted median of mOS increased from 9.7 to 11.7 months but Gem/CDDP regimen remained more toxic than Gemox regimen. These results suggest that the Gem/CDDP regimen with cisplatin (25–35 mg/m2) administered on days 1 and 8 is associated with survival advantage than Gemox regimen but with addition of toxicity.
Biofuel‐Cell Cathodes Based on Bilirubin Oxidase Immobilized through Organic Linkers on 3D Hierarchically Structured Carbon Electrodes
Authors: Vivekananthan Jeevanthi , Rincón Rosalba A. , Kuznetsov Volodymyr , Pöller Sascha , Schuhmann Wolfgang 
Published: August 2014

AbstractDifferent modification procedures to stabilize and control the orientation of Myrothecium verrucaria bilirubin oxidase (MvBOD) on 3D carbon nanotube/carbon microfiber‐modified graphite electrode surfaces were evaluated for the development of biofuel‐cell cathodes. The surface properties of different linkers for covalent binding of BOD were investigated by using atomic force microscopy‐based techniques. For all immobilization strategies, the maximal current response was obtained at a pH value of 6.5 with temperatures between 20 and 35 °C. The biocathode based on MvBOD immobilized through an imino bond to the electrode showed the highest current density (1600 μA cm−2) and was resistant to the presence of chloride ions. A biofuel cell was constructed, and it exhibited a maximal power of 54 μW cm−2 at 350 mV with an open‐circuit voltage of about 600 mV by using a cellobiose dehydrogenase based bioanode and glucose as the fuel.
A Monosaccharide‐Based Coin‐Cell Biobattery
Authors: Giroud Fabien , Hickey David P. , Schmidtke David W. , Glatzhofer Daniel T. , Minteer Shelley D. 
Published: August 2014

AbstractThe utilization of carbon felt as the conductive material for the construction of a monosaccharide‐based coin‐cell biobattery is explored. Anthracene‐modified carbon nanotubes were used at the positive electrode to preferentially orientate laccase for direct electron transfer during O2 reduction. A ferrocene‐modified poly(ethylenimine) redox polymer was used to electrically communicate with either glucose oxidase or fructose dehydrogenase at the negative electrode. The use of carbon felt helped in the immobilization of a larger quantity of enzyme. Cathodic and anodic currents with carbon felt electrodes showed a three‐fold and twofold increase, respectively, relative to the currents obtained with Toray paper materials. Bioelectrodes were assembled in a commercial coin‐cell battery casing and were tested as possible biobatteries. This work presents the first time in which a traditional battery design is used for the performance evaluation of different biobatteries.
Control of the Single‐Molecule Magnet Behavior of Lanthanide‐Diarylethene Photochromic Assemblies by Irradiation with Light
Authors: Pinkowicz Dawid , Ren Min , Zheng Li‐Min , Sato Saki , Hasegawa Miki , Morimoto Masakazu , Irie Masahiro , Breedlove Brian K. , Cosquer Goulven , Katoh Keiichi , Yamashita Masahiro 
Published: August 2014

AbstractLanthanide‐based extended coordination frameworks showing photocontrolled single‐molecule magnet (SMM) behavior were prepared by combining highly anisotropic DyIII and HoIII ions with the carboxylato‐functionalized photochromic molecule 1,2‐bis(5‐carboxyl‐2‐methyl‐3‐thienyl)perfluorocyclopentene (H2dae), which acts as a bridging ligand. As a result, two new compounds of the general formula [{LnIII2(dae)3(DMSO)3(MeOH)}⋅10 MeOH]n (M=Dy for 1 a and Ho for 2) and two additional pseudo‐polymorphs [{DyIII2(dae)3(DMSO)3(H2O)}⋅x MeOH]n (1 b) and [{DyIII2(dae)3(DMSO)3(DMSO)}⋅x MeOH]n (1 c) were obtained. All four compounds have 2D coordination‐layer topologies, in which carboxylate‐bridged Ln2 units are linked together by dae2− anions into grid‐like frameworks. All four compounds exhibited a strong reversible photochromic response to UV/Vis light. Moreover, both 1 a and 2 show field‐induced SMM behavior. The slow magnetic relaxation of 1 a is influenced by the photoisomerization reaction leading to the observation of the cross‐effect: photocontrolled SMM behavior.
A Fast Way to Fluorescence: A Fourfold Domino Reaction to Condensed Polycyclic Compounds
Authors: Tietze Lutz F. , Eichhorst Christoph , Hungerland Tim , Steinert Markus 
Published: August 2014

AbstractA fast and efficient palladium‐catalyzed fourfold domino Sonogashira/double‐carbopalladation/CH‐activation reaction that converts simple aromatic systems into complex polycyclic hydrocarbons has been developed. A number of substituted products has thus been prepared in yields up to 89 %. The structural assignment has been confirmed by using single‐crystal X‐ray crystallography. The products show intriguing fluorescence activity and thus might serve as chemical sensors or fluorescent imaging dyes.
Synthesis and Evaluation of Novel Analogues of Ripostatins
Authors: Tang Wufeng , Liu Shuang , Degen David , Ebright Richard H. , Prusov Evgeny V. 
Published: August 2014

AbstractRipostatins are polyene macrolactones isolated from the myxobacterium Sorangium cellulosum. They exhibit antibiotic activity by inhibiting bacterial RNA polymerase (RNAP) through a binding site and mechanism that are different from those of current antibacterial drugs. Thus, the ripostatins serve as starting points for the development of new anti‐infective agents with a novel mode of action. In this work, several derivatives of ripostatins were produced. 15‐Desoxyripostatin A was synthesized by using a one‐pot carboalumination/cross‐coupling. 5,6‐Dihydroripostatin A was constructed by utilizing an intramolecular Suzuki cross‐coupling macrolactonization approach. 14,14′‐Difluororipostatin A and both epimeric 14,14′‐difluororipostatins B were synthesized by using a Reformatsky type aldol addition of a haloketone, Stille cross‐coupling, and ring‐closing metathesis. The RNAP‐inhibitory and antibacterial activities are presented. Structure–activity relationships indicate that the monocyclic keto‐ol form of ripostatin A is the active form of ripostatin A, that the ripostatin C5–C6 unsaturation is important for activity, and that C14 geminal difluorination of ripostatin B results in no loss of activity.
Bis[N,N′‐diisopropylbenzamidinato(−)]silicon(II): Lewis Acid/Base Reactions with Triorganylboranes
Authors: Junold Konstantin , Baus Johannes A. , Burschka Christian , Fonseca Guerra Célia , Bickelhaupt F. Matthias , Tacke Reinhold 
Published: August 2014

AbstractReaction of the donor‐stabilized silylene 1 (which is three‐coordinate in the solid state and four‐coordinate in solution) with BEt3 and BPh3 leads to the formation of the Lewis acid/base complexes 2 and 3, respectively, which are the first five‐coordinate silicon compounds with an SiB bond. These compounds were structurally characterized by crystal structure analyses and by multinuclear NMR spectroscopic studies in the solid state and in solution. Additionally, the bonding situation in 2 and 3 was analyzed by quantum chemical studies.
Oxygenation by Ruthenium Monosubstituted Polyoxotungstates in Aqueous Solution: Experimental and Computational Dissection of a Ru(III)–Ru(V) Catalytic Cycle
Authors: Sartorel Andrea , Miró Pere , Carraro Mauro , Berardi Serena , Bortolini Olga , Bagno Alessandro , Bo Carles , Bonchio Marcella 
Published: August 2014

AbstractMolecular polyoxometalates with one embedded ruthenium center, with general formula [RuII/III(DMSO)XW11O39]n− (X=P, Si; n=4–6), are readily synthesized in gram scale under microwave irradiation by a flash hydrothermal protocol. These nanodimensional and polyanionic complexes enable aerobic oxygenation in water. Catalytic oxygen transfer to dimethylsulfoxide (DMSO) yielding the corresponding sulfone (DMSO2) has been investigated with a combined kinetic, spectroscopic and computational approach addressing: (i ) the RuIII catalyst resting state; (ii ) the bimolecular event dictating its transformation in the rate‐determining step; (iii ) its aerobic evolution to a high‐valent ruthenium oxene species; (iv ) the terminal fate to diamagnetic dimers. This pathway is reminiscent of natural heme systems and of bioinspired artificial porphyrins. The in silico characterization of a key bis‐Ru(IV)‐μ‐peroxo‐POM dimeric intermediate has been accessed by density functional theory. This observation indicates a new landmark for tracing POM‐based manifolds for multiredox oxygen reduction/activation, where metal‐centered oxygenated species play a pivotal role.
ChemInform Abstract: A Novel Tunable Na2Ba6(Si2O7) (SiO4)2:Ce3+,Mn2+ Phosphor with Excellent Thermal Stability for White Light Emitting Diodes.
Authors: Lv Wenzhen , Jia Yongchao , Zhao Qi , Jiao Mengmeng , Shao Baiqi , Lv Wei , You Hongpeng 
Published: August 2014

AbstractThe title phosphor is synthesized by solid state reaction of NaNO3, BaCO3, SiO2, CeO2, and MnCO3 (5% H2—95% N2, 1050 °C, 8 h) and characterized by XRD and photoluminescence spectroscopy.
ChemInform Abstract: A Novel Tunnel Na0.61Ti0.48Mn0.52O2 Cathode Material for Sodium‐Ion Batteries.
Authors: Guo Shaohua , Yu Haijun , Liu Dequan , Tian Wei , Liu Xizheng , Hanada Nobuko , Ishida Masayoshi , Zhou Haoshen 
Published: August 2014

AbstractThe title material is synthesized by solid state reaction of Na2CO3, Mn2O5, and TiO2 (Ar, 900 °C, 20 h).
ChemInform Abstract: Lithium Cycling in a Self‐Assembled Copper Chloride—Polyether Hybrid Electrode.
Authors: Jaffe Adam , Karunadasa Hemamala I. 
Published: August 2014

AbstractAddition of a HCl solution to a mixture of 2,2′‐(ethylenedioxy)bis(ethylamine) (edbe) and CuCl2 in EtOH leads to the precipitation of (H2edbe)[CuCl4] crystals with a yield of 87%.
ChemInform Abstract: Iodine Mediated Deprotection of N‐tert‐Butanesulfinyl Amines: A Functional Group Compatible Method.
Authors: Chen Wen , Ren Jian , Wang Minshou , Dang Lingjing , Shen Xianfu , Yang Xiaodong , Zhang Hongbin 
Published: August 2014

AbstractTert‐butanesulfinyl and p‐toluenesulfinyl amines are cleaved by iodine.
ChemInform Abstract: A Homologation Approach to the Synthesis of Difluorinated Cycloalkynes.
Authors: Sletten Ellen M. , de Almeida Gabriela , Bertozzi Carolyn R. 
Published: August 2014

AbstractThe starting material (I) is synthesized beginning with the difluorination of cycloheptane‐1,3‐dione using Selectfluor, mono‐Wittig olefination and hydrogenation of the olefin moiety.
ChemInform Abstract: Asymmetric Henry Reaction Catalyzed by L‐Proline Derivatives in the Presence of Cu(OAc)2: Isolation and Characterization of an in situ Formed Cu(II) Complex.
Authors: Atoholi Sema H. , Bez Ghanashyam , Karmakar Sanjib 
Published: August 2014

AbstractIn addition to the synthesis of the ligand PRO, the preparation of five proline‐derived chiral ligands is described all showing inferior catalytic activity compared to PRO under the investigated conditions.
ChemInform Abstract: Boronic Acid‐Catalyzed Selective Oxidation of 1,2‐Diols to α‐Hydroxy Ketones in Water.
Authors: William Julius M. , Kuriyama Masami , Onomura Osamu 
Published: August 2014

AbstractVarious 1,2‐diols are selectively oxidized to α‐hydroxyketones via their boronate esters using dibromoisocyanuric acid as the terminal oxidant or an electrochemical oxidation.
ChemInform Abstract: RhIII‐Catalyzed Hydroacylation Reactions Between N‐Sulfonyl 2‐Aminobenzaldehydes and Olefins.
Authors: Zhang Tao , Qi Zisong , Zhang Xueyun , Wu Lamei , Li Xingwei 
Published: August 2014

AbstractA facile procedure allows the coupling of aminobenzaldehydes with olefins.
ChemInform Abstract: Heck—Matsuda Arylation of Olefins Through a Bicatalytic Approach: Improved Procedures and Rationalization.
Authors: Oger Nicolas , Le Callonnec Francois , Jacquemin Denis , Fouquet Eric , Le Grognec Erwan , Felpin Francois‐Xavier 
Published: August 2014

AbstractThe reaction yields dramatically depend on the experimental procedure requiring the addition of most of the anisole derivative over 24 h to a mixture of a small amount of the anisole derivative and all other reagents.
ChemInform Abstract: N‐Heterocyclic Carbene‐Catalyzed Formal Cross‐Coupling Reaction of α‐Haloenals with Thiols: Organocatalytic Construction of sp2 Carbon—Sulfur Bonds.
Authors: He Lin , Guo Hao , Li Yuan‐Zhen , Du Guang‐Fen , Dai Bin 
Published: August 2014

AbstractInter‐ and intramolecular competition reactions between an alcohol and a thiol revealed that the α‐bromoenal (I) preferentially reacts with thiols.
ChemInform Abstract: Palladium‐Catalyzed One‐Pot Three‐ or Four‐Component Coupling of Aryl Iodides, Alkynes, and Amines Through C—N Bond Cleavage: Efficient Synthesis of Indole Derivatives.
Authors: Hao Wei , Geng Weizhi , Zhang Wen‐Xiong , Xi Zhenfeng 
Published: August 2014

AbstractA variety of aryl iodides and substituted 1‐bromo‐2‐iodobenzene derivatives [e.g. (XIV) in four‐component reaction], and symmetric and unsymmetric alkynes can be used for the title synthesis.
ChemInform Abstract: Synthesis of Substituted Tetrahydron‐1H‐carbazol‐1‐one and Analogues via PhI(OCOCF3)2‐Mediated Oxidative C—C Bond Formation.
Authors: Shi Hao , Guo Tianjian , Zhang‐Negrerie Daisy , Du Yunfei , Zhao Kang 
Published: August 2014

AbstractThe title compounds are conveniently synthesized through direct intramolecular oxidative cyclization of 2‐(phenylamine)cyclohex‐2‐enones.
ChemInform Abstract: Synthesis of Substituted 2,4,5,6‐Tetrahydrocyclopenta[c]pyrazoles and 2,4,5,6‐Tetrahydropyrrolo[3,4‐c]pyrazoles by Intramolecular Nitrilimine Cycloaddition.
Authors: Winters Michael P. , Teleha Christopher A. , Sui Zhihua 
Published: August 2014

AbstractTreatment of sensitive hydrazonyl chlorides with triethylamine results in the formation of nitrilimine intermediates.
ChemInform Abstract: Copper(II)‐Catalyzed Aerobic Oxidative Coupling Between Chalcone and 2‐Aminopyridine via C—H Amination: An Expedient Synthesis of 3‐Aroylimidazo[1,2‐a]pyridines.
Authors: Monir Kamarul , Kumar Bagdi Avik , Mishra Subhajit , Majee Adinath , Hajra Alakananda 
Published: August 2014

AbstractThe α,β‐unsaturated ketones trans‐3‐nonen‐2‐one and 2‐cyclohexen‐1‐one as well as acrylonitrile, vinyl phosphate and ethyl acrylate do not afford the desired imidazopyridine derivatives.
ChemInform Abstract: Straightforward Synthesis of Orthogonally Protected Piperidin‐3‐ylmethanamine and Piperidin‐4‐ylmethanamine Derivatives.
Authors: Kosak Urban , Brus Boris , Gobec Stanislav 
Published: August 2014

AbstractTwo convenient procedures are developed for the synthesis of protected piperidin‐4‐ylmethanamine derivatives from isonipecotamide (I) and isonipecotic acid (VI).
ChemInform Abstract: Rhodium(III)‐Catalyzed Oxidative Olefination of Picolinamides: Convenient Synthesis of 3‐Alkenylpicolinamides.
Authors: Zhou Jun , Li Bo , Qian Zhen‐Chao , Shi Bing‐Feng 
Published: August 2014

AbstractThe olefination is advantageous with regards to high yields, excellent regioselectivity, and good functional group tolerance.