Using Low-Energy Electrons for the Radiation Treatment of Chilled Trout

Physics of Particles and Nuclei Letters - Chilled minced trout has been treated by 1-MeV electron-beam irradiation using the UELR-1-25-T-001 industrial electron accelerator. The results of the...     

Synthesis of a New Benzoate Plasticizer for Polyvinyl Chloride Based on a 2-Ethylhexanol By-Product

Russian Journal of Applied Chemistry - When 2-ethylhexyl alcohol is produced by the propylene oxo synthesis, 2-ethylhexanol distillation residue (EDR), a large-tonnage by-product, is formed....     

SEMICONDUCTOR MATERIALS Ce-SnO2/Sb2O5 AND Pd-SnO2/Sb2O5 FOR CREATING SENSITIVE ELEMENTS OF SENSORS FOR HYDROGEN

Theoretical and Experimental Chemistry - Materials based on tin dioxide doped with antimony with additions of cerium and palladium are synthesized in order to create highly sensitive and...     

2-(5-Arylterphenyl-4-yl)quinolines from 2-methylquinoline and 1-(het)aryl-3-phenylprop-2-yn-1-ones in just a one step: A miracle of molecular interplay

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Fumed silica – rheological additive for adhesives,resins, and paints

Fumed silica, a synthetic silicon dioxide, is a powerful rheological additive for resins and paints to introduce thixotropy or even a yield point. The rheological effectiveness of fumed silica is based on its ability to form percolating networks which immobilize large volumes of liquid. By a combination of advanced rheological experiments, spectroscopical investigations, and quantum chemical calculations it could be demonstrated that the formation and stability of the silica network is strongly influenced by particle-resin interactions. The results can be used to develop comprehensive models, which explain the rheological performance of different grades of fumed silica in different resins.     

Fumed silica synthesis: from molecules,protoparticles and primary particles to aggregates and agglomerates

Basing on quantum chemical simulations (semi‐empirical methode PM3) and vibration spectroscopy (Infrared (IR) and inelastic neutron scattering (INS)) and using other experimental data, a model of the formation of fumed silica particles is proposed, leading from initial molecules, via protoparticles and primary particles up to aggregates and agglomerates. Also, defintions of products in the flame process steps are suggested, from a chemical point of view. This process may be described as a sequence of states: Molecules ⇒ (molecular clusters = protoparticles) ⇒ primary particles ⇒ aggregates ⇒ agglomerates     

Analysis of precipitates in ultrafine-grained metallic materials

In the present work, new possibilities of the X-ray diffraction for investigations of the phase composition, size, shape and volume fraction of particles in ultrafine-grained ferritic/martensitic steel and the Cu-Cr-Zr alloy have been demonstrated. For the first time, the method of X-ray diffraction in the transmission mode was used to identify particles with a volume fraction of less than one percent in the ultrafine-grained materials studied. The small-angle X-ray scattering method was used to estimate the size and shape of dispersed particles. Specific features of the ultrafine-grained structure determined by the X-ray diffraction and transmission electron microscopy studies were used for estimation of dispersion hardening in the samples obtained by equal-channel angular pressing in comparison with the samples subjected to standard treatment.     

Simulation of tau neutrino interaction in an emulsion track detector

Simulation of the interactions between tau neutrinos ν_τ and the material of the emulsion track detector using Geant4 software is described. The purpose of the work is to generate artificial events and to estimate, on their basis, the reconstruction accuracy for the geometric parameters (vertex coordinates, impact parameters, and track kink angles) and distributions of these parameters used in the selection criteria of the OPERA experiment.     

N,N-Dimethylethylenediamine in direct and direct template syntheses of Cu(II)/Cr(III) complexes

Four new heterometallic Cu(II)/Cr(III) complexes with N,N-dimethylethylenediamine (dmen) and its novel Schiff-base derivatives, N′-[(1Z)-3-amino-1,3-dimethylbutylidene]-N,N-dimethylethane-1,2-diamine (dmenac) and N′-((1Z)-3-{[2-(dimethylamino)ethyl]amino}-1,3-dimethylbutylidene)-N,N-dimethylethane-1,2-diamine (dmen₂ac), have been easily prepared by self-assembly and characterized by spectroscopic methods and single crystal X-ray analysis. The structures of all the complexes are assisted by numerous hydrogen bonds that provide a web of interactions and mould the supramolecular architectures of the compounds. Variable-temperature (1.8–300 K) magnetic susceptibility measurements reveal Curie-Weiss paramagnetic behavior of all the compounds, supported by EPR studies.     

Influence of the ratios of natural and butadiene-styrene rubbers on the viscosity of rubber blends and fragmentary mobility of macromolecules

The structural states of macromolecules of natural and butadiene-styrene rubbers in their blends were studied by evaluating the spin-lattice relaxation times of carbon nuclei. The relationship between the viscosity of rubber blends and fragmentary mobility of macromolecules was examined.