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The 3rd International Conference of the Hellenic Society of Rheology (HSR)
The Pretreatment of Carbon Fibres for 3D C/SiC Composites
Investigation of Vibration Characteristics of Carbon/Epoxy Propeller Shaft for Vehicle
Fractography of Mode I Crack Propagation in Glass Cloth/Vinylester Composite
Conducting Composites as Cable Anodes in Cathodic Protection
The Society’s Site: Time period March 2002 to August 2002
Stability of Cement Grout: Study of Sedimentation Phenomena
The grouts are suspensions containing cement used in the technique of prestressing by post-tension. Cement, from its chemical nature, protects the wire ropes (strands) from corrosion. To be able to play correctly this protective role, the grout must remain homogeneous and must entirely cover the strands. The lack of s…
On-Line Rheometry for Twin-Screw Extrusion (Along the Extruder) and its Applications
Abstract Due to a number of practical difficulties, both in- and on-line measurements of the rheological properties of complex systems during extrusion are usually performed at the end of the extruder, under very specific experimental conditions. This makes this type of instruments more useful for quality control than…
Viscosity of Cocoa and Chocolate Products
Continuity Characterization and Evaluation of Rolled Polyester Coatings on Electrolytic Plates
Investigation of magnetic phase transformations in a system of Nd1−xBaxMnO3−δ (0≤x≤0.50) depending on the conditions of preparation
Investigations are performed of the crystal structure and magnetic and electromagnetic properties of single crystals (0.23 ≤x≤0.34) and polycrystals (0 ≤x ≤0.50) of an Nd1−x BaxMnO3−δ system of solid solutions. It is found that, for samples prepared in the air, the maximal Curie temperature (T C ) does not exceed 150…
Development of Wet Environmental TEM (Wet-ETEM) for In Situ Studies of Liquid-Catalyst Reactions on the Nanoscale
We present the development of in situ wet environmental transmission electron microscopy (wet-ETEM) for direct probing of controlled liquid-catalyst reactions at operating temperatures on the nanoscale. The first nanoscale imaging and electron diffraction of dynamic liquid hydrogenation and polymerization reactions in…
Coalescence of sessile drops
We present an experimental and theoretical description of the kinetics of coalescence of two water drops on a plane solid surface. The case of partial wetting is considered. The drops are in an atmosphere of nitrogen saturated with water where they grow by condensation and eventually touch each other and coalesce. A n…
Fabrication of compact silver nanoshells on polystyrene spheres through electrostatic attractionElectronic supplementary information (ESI) available: Preparation and characterization of PS spheres. Fig. S1: SEM micrographs of silver–latex composites. See http://www.rsc.org/suppdata/cc/b1/b110164c/
Nanoshells composed of close-packed silver nanocrystals have been fabricated on polystyrene spheres via direct electrostatic attraction at appropriate pH; the thickness and roughness of the shell can be readily controlled through a layer-by-layer technique.
POLYHEDRON DISTORTIONS IN TOURMALINE
Distortion parameters [� , � 2 , DI(Y‐O), DI(O‐ Y‐O), DI(O‐O)] have been calculated for cation polyhedra in tourmalines of different chemical compositions. Tourmalines with greater amounts of small, highly charged ions in the YO6 octahedron display greater bond-length distortion in Y. The size and charge of the occupa…
Surface Species Formed after NO Adsorption and NO + O2 Coadsorption on ZrO2 and Sulfated ZrO2: An FTIR Spectroscopic Study
Adsorption of NO and its coadsorption with oxygen on ZrO 2 and sulfated ZrO 2 have been studied by FTIR spectroscopy. It has been found that NO adsorption on ZrO 2 results in formation of N 2 O (2282, 2244, and 1233 cm - 1 ) and small amounts of nitro species (1443 and 1423 cm - 1 ), nitrates (1558, 1189, and 1057 cm…
Vibrations of amorphous, nanometric structures: When does continuum theory apply?
We investigate the low-frequency end of the vibrational spectrum in small (nanometric) disordered systems. Using numerical simulation and exact diagonalization for simple two-dimensional models, we show that continuum elasticity, applied to these systems, actually breaks down below a length scale of typically 30 to 50…
How To Derive and Parameterize Effective Potentials in Colloid−Polymer Mixtures
Polymer chains in colloid−polymer mixtures can be coarse-grained by replacing them with single soft particles interacting via effective polymer−polymer and polymer−colloid pair potentials. Here we describe in detail how Ornstein−Zernike inversion techniques, originally developed for atomic and molecular fluids, can be…
NMR comparative study of PbMg_1/3Nb_2/3O_3 and PbSc_1/2Nb_1/2O_3 local structure
The 93Nb and 45Sc NMR spectra in PbSc_1/2Nb_1/2O_3 (PSN) and PbMg_1/3Nb_2/3O_3 (PMN) disordered relaxor ferroelectrics at the temperature T > T_0 (T_0 is the temperature of the dielectric susceptibility maximum) have been studied. Spectra analysis was performed on the base both of the analytical description of NMR lin…