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Synthesis of in situ reinforced silicon nitride composites
(Journal of the Serbian Chemical Society, 2004)
The objective of this work was to investigate the effect of two different sintering additives (CeO2 and Y2O3 + Al2O3), sintering time and amount of beta-Si3N4 seeds on the densification. mechanical properties and microstructure ...
The CMS experiment at the CERN LHC
(Journal of Instrumentation, 2008)
The Compact Muon Solenoid (CMS) detector is described. The detector operates at the Large Hadron Collider (LHC) at CERN. It was conceived to study proton-proton (and lead-lead) collisions at a centre-of-mass energy of 14 ...
Nanoparticle shape and configuration analysis by transmission electron tomography
(Journal of Microscopy, Oxford, 2008)
Tomographic reconstruction by transmission electron microscopy is used to reveal three-dimensional nanoparticle shapes and the stacking configurations of nanoparticle ensembles. Reconstructions are generated from bright-field ...
Implementation of neural networks for classification of moss and lichen samples on the basis of gamma-ray spectrometric analysis
(Environmental Monitoring and Assessment, 2007)
Mosses and lichens have an important role in biomonitoring. The objective of this study is to develop a neural network model to classify these plants according to geographical origin. A three-layer feed-forward neural ...
Ionization energies of the non-stoichiometric LinFn-1 (n=3, 4, 6) clusters
(Vacuum, 2008)
Ionization energies of non-stoichiometric LinFn-1 (n =3,4, 6) clusters determined by a thermal ionization mass spectrometry (TIMS) were 4.2 +/- 0.2 eV for Li3F2, 4.3 +/- 0.2 eV for Li4F3 and 4.1 +/- 0.2 eV for Li6F5. The ...
Effect of steroid hormone deprivation on the expression of ecto-ATPase in distinct brain regions of female rats
(Physiological Research, 2000)
Abundant evidence indicates that ATP and adenosine act as neurotransmitters or co-transmitters, influencing nerve cell physiology in various ways. Therefore, regulation of ATP-metabolizing enzymes is essential for the ...
Optical Properties of Y2O3:Eu3+ Red Emitting Phosphor Obtained via Spray Pyrolysis
(Acta Physica Polonica. Series A: General Physics, Physics of Condensed Matter, Optics and Quantum Electronics, Atomic and Molecular Physics, Applied Physics, 2009)
In the present work we explored the possibility of obtaining Y2O3:Eu3+ mu m-size particles by an ultrasonic spray pyrolysis method. As-prepared sample constitutes of spherical, hollow particles with an average size of 1 ...
Analysis of Photothermal Response of Thin Solid Films By Analogy with Passive Linear Electric Networks
(Thermal Science, 2009)
The paper presents conditions that should be met in order to make the photothermal induced temperature variations of a solid sample analogous to the voltage variations of the electric network with passive linear elements. ...
Functionalization of Single Wall Carbon Nanotubes by Hydroxyethyl Cellulose
(Acta Chimica Slovenica, 2009)
The results of synthesis and characterization of single wall carbon nanotubes functionalized by hydroxyethyl cellulose have been presented. The properties of pristine and modified single wall carbon nanotubes have been ...
Deposition on thin SiO2 layer by reactive sputtering
(Optoelectronics and Advanced Materials - Rapid Communications, 2007)
We investigate the experimental possibilities for producing high purity stoichiometric SiO2 thin films by reactive ion beam sputtering. The layers were deposited in a UHV chamber ( base pressure 4 x 10(-9) mbar) by 1 keV ...