17.05.2013 | Yan Sun, Xiaoan Cao, Yonghui Liu, Nijing Wang, Ruiwen He, Luminescence, 2013

ABSTRACT We present a sensitive and quick way to determine benzene, toluene and dimethylbenzene (BTEX) in air, applying a cataluminescence (CTL) sensor based on a nano‐sized composite material, γ‐Al2O3/PtO2. The factors that affect the sensor's performance were studied, including the ...

mehr

17.05.2013 | Franco Dinelli, Tommaso Sgrilli, Andrea Ricci, Paolo Baschieri, Pasqualantonio Pingue, Manjunath Puttaswamy, Peter K ..., Journal of Polymer Science Part B: Polymer Physics, 2013

ABSTRACT The viscoelastic properties of thin polystyrene (PS) films depend on confinement, as it can modify the molecular dynamics affecting the glass transition. In the recent past, the authors have investigated the region next to the free interface by means of an atomic force microscope ...

mehr

16.05.2013 | Nobuyuki Takahashi, Lan Yao, Minji Kim, Hiroshi Sasako, Morihiro Aoyagi, Jinji Shono, Nobuaki Tsuge, Tsuyoshi Goto, ..., Molecular Nutrition & Food Research, 2013

Dill, a small annual herb, is widely used as a flavoring agent in dishes including salads. It has been demonstrated that dill extract and its essential oil show hypolipidemic effects in rats. However, the mechanism of these effects has not been elucidated yet. We found that dill seed ...

mehr

16.05.2013 | Weiwei Yu, Wensheng Cai, Xueguang Shao, Journal of Separation Science, 2013

A method for the fast analysis of a specific component in complex samples by GC–MS was developed and used for the quantitative determination of prometryn in hair samples. In this method, the tedious and time‐consuming sample pretreatment for purification was saved, and a short capillary ...

mehr

16.05.2013 | Martijn A. J. Gillissen; Takaya Terashima; E. W. Meijer; Anja R. A. Palmans; Ilja K. Voets, Macromolecules, 2013

The folding of single polymeric chains into single chain polymeric nanoparticles (SCPNs) is a unique strategy to prepare ordered structures at the nanoscopic level. Structure forming elements are attached to a polymer chain designed to fold it into a well-defined object, the SCPN. The ...

mehr

16.05.2013 | Xiaotang Lu; Justin T. Harris; Julián E. Villarreal; Aaron M. Chockla; Brian A. Korgel, Chemistry of Materials, 2013

Germanium (Ge) nanowires can be grown using either gold (Au) or nickel (Ni) seeds in a supercritical solvent; however, the quality and yield of the nanowires is much higher using Au seeds and diphenyl germane (DPG) as a reactant under typical reaction conditions. We find that the addition of ...

mehr

16.05.2013 | Yamina A. Dávila; Matias I. Sancho; María C. Almandoz; Sonia E. Blanco, Journal of Chemical & Engineering Data, 2013

The acid dissociation constants (pKa) of 7-hydroxyflavone, 3-hydroxyflavone and 5-hydroxyflavone, which are practically insoluble compounds in water but of great biological and physicochemical interest, were determined by UV–visible spectroscopy in ethanol–water and acetonitrile–water ...

mehr

16.05.2013 | Haddad, Wassim M., Entropy, 2013

In this paper, we combine the two universalisms of thermodynamics and dynamical systems theory to develop a dynamical system formalism for classical thermodynamics. Specifically, using a compartmental dynamical system energy flow model involving heat flow, work energy, and chemical reactions, ...

mehr

15.05.2013 | Holger Braunschweig; Alexander Damme, Chemical Communication, 2013

cis-[(Cy3P)2Pt{B(OMe)2}2] (1) was obtained in quantitative yield and fully characterised. The thermal stability of 1 was investigated in solution using multinuclear NMR spectroscopy revealing a hitherto unknown temperature-dependent equilibrium between 1 and the corresponding starting ...

mehr

15.05.2013 | Dinesh C. Aluthge; Cuiling Xu; Norhayani Othman; Nazbanoo Noroozi; Savvas G. Hatzikiriakos; Parisa Mehrkhodavandi, Macromolecules, 2013

The dinuclear indium catalyst [(NNO)InCl]2(μ-OEt)(μ-Cl), previously reported to be highly active for the living ring-opening polymerization of cyclic esters lactide (LA) and β-butyrolactone (BBL), was used to generate a series of triblock copolymers of poly(lactic acid) (PLA) and ...

mehr