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860 Newest Publications about the topic iso

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Differences in XPS and solid state NMR spectral data and thermo-chemical properties of iso-structural compounds in the series KTaF6, K2TaF7 and K3TaF8 and KNbF6, K2NbF7 and K3NbF8

03-Sep-2015 | Jarmila Mlynarikova; Miroslav Boca; Aydar Rakhmatullin; Eva Hadzimová; Zuzana Vasková; Matej Micusik, Dalton Transactions, 2015

A series of compounds KTaF6, K2TaF7 and K3TaF8 and KNbF6, K2NbF7 and K3NbF8 was investigated by means of XPS and MAS NMR spectroscopies and DSC measurements. Binding electron energies of each accessible orbitals were discussed and correlation between different orbitals was introduced for the ...

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Organocatalysis by an aprotic imidazolium zwitterion: regioselective ring-opening of aziridines and applicable on gram scale synthesis

02-Sep-2015 | Adinath Majee; Nirnita Chakraborty Ghosal; Sougata Santra; Sudarshan Das; Alakananda Hajra; Grigory V Zyryanov, Green Chemistry, 2015

An imidazole-based zwitterionic-salt, 4-(3-methylimidazolium)butane sulfonate (MBS) has been found to be an efficient organocatalyst for aziridine ring-opening regioselectively by various nucleophiles like indoles, pyrrole, methanol, ethanol, acetic acid and di-iso-propylamine. The reactions are ...

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Bis‐GMA Free Dental Materials Based on UDMA/SR833s Dental Resin System

27-Aug-2015 | YUFEI DING, BAOJUN LI, MINGHUI WANG, FANG LIU, JINGWEI HE, Advances in Polymer Technology, 2015

ABSTRACT Tricyclododecane dimethanol diacrylate (SR833s) was used to replace triethylene glycol dimethacrylate (TEGDMA) as a diluent monomer and mixed with 1,6‐bis(methacryloxy‐2‐ethoxy‐carbonylamino)‐2,4,4‐trimethylhexane (UDMA) to prepare ...

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Facile Kinetic Induction of a Dihydropyridide to Pyrrolide Ring Contraction

26-Aug-2015 | Michael S Hill; Catherine Weetman; Mary F Mahon; D Carbery, Dalton Transactions, 2015

Reactions between magnesium 1,4-dihydropyridide or 1,2-dihydro-iso-quinolide derivatives and carbodiimides, RN=C=NR, generally result in Mg-N insertion and formation of guanidinate complexes. More sterically perturbed systems with N-aryl carbodiimide substitution, however, follow a divergent ...

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Characterization of light‐cured, dental‐resin‐based biocomposites

21-Aug-2015 | Zuzanna Okulus, Tomasz Buchwald, Adam Voelkel, Journal of Applied Polymer Science, 2015

ABSTRACT The dependence of the depth of cure (DOC) and degree of conversion (DC) on the depth of experimental and commercial materials were determined according to ISO 4049 procedure and with the use of Raman spectroscopy, respectively. Moreover, an attempt was made to find the correlation ...

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The effect of fatigue pre‐cracking forces on fracture toughness

13-Aug-2015 | M. Nowak‐Coventry, H. Pisarski, P. Moore, Fatigue & Fracture of Engineering Materials & Structures, 2015

Abstract Testing procedures for the determination of the fracture toughness of a material by monotonic loading of fatigue pre‐cracked specimens are well established in standards such as BS 7448, BS EN ISO 15653, ISO 12135, ASTM E1820 and ASTM E1921. However, a review of these standards ...

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Thermo-responsive behavior of borinic acid polymers: experimental and molecular dynamics studies

13-Aug-2015 | Wen-Ming Wan; Peng Zhou; Fei Cheng; Xiao-Li Sun; Xin-Hu Lv; Kang-Kang Li; Hai Xu; Miao Sun; Frieder Jäkle, Soft Matter, 2015

The thermo-responsive properties of borinic acid polymers were investigated by experimental and molecular dynamics simulation studies. The homopolymer poly(styrylphenyl(tri-iso-propylphenyl)borinic acid) (PBA) exhibits an upper critical solution temperature (UCST) in polar organic solvents that ...

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Sensitometric analyses of screen-film systems for mammography exams in Brazil

09-Aug-2015 | Author(s): L.A.G. Magalhães, G.G. Drexler, C.E de Almeida, L.L. Medeiros, N.M.P.D. Ferreira, J.J.S. Estrada, Radiation Physics and Chemistry, 2015

Publication date: December 2015 Source:Radiation Physics and Chemistry, Volume 117 Author(s): L.A.G. Magalhães, G.G. Drexler, C.E de Almeida, L.L. Medeiros, N.M.P.D. Ferreira, J.J.S. Estrada A determination of the sensitometric parameters of screen-film systems to evaluate their ...

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Collaborative trial for the validation of event-specific PCR detection methods of genetically modified papaya Huanong No.1

09-Aug-2015 | Author(s): Jiaojun Wei, Huangying Le, Aihu Pan, Junfeng Xu, Feiwu Li, Xiang Li, Sheng Quan, Jinchao ..., Food Chemistry, 2015

Publication date: 1 March 2016 Source:Food Chemistry, Volume 194 Author(s): Jiaojun Wei, Huangying Le, Aihu Pan, Junfeng Xu, Feiwu Li, Xiang Li, Sheng Quan, Jinchao Guo, Litao Yang For transferring the event-specific PCR methods of genetically modified papaya Huanong No.1 ...

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Hydrogen-Bonding-Induced Nanophase Separation in Giant Surfactants Consisting of Hydrophilic [60]Fullerene Tethered to Block Copolymers at Different Locations

06-Aug-2015 | Zhiwei Lin; Pengtao Lu; Chih-Hao Hsu; Jian Sun; Yangbin Zhou; Mingjun Huang; Kan Yue; Bo Ni; Xue-Hui Dong; Xiaochen ..., Macromolecules, 2015

Phase behaviors of two series of giant surfactants consisting of a hydrophilic [60]fullerene (AC60) molecular nanoparticle (MNP) tethered to a polystyrene-block-poly(ethylene oxide) (PS-b-PEO) block copolymer were investigated. The physical location of AC60 MNP was specifically designed to be at ...

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