Nanocomposite of NiAl2O4/SiO2 (NAS) was prepared through insitu solgel reaction, in which NiAl2O4 nanocrystals were dispersed in the silica glassy matrix. The prepared dried NAS gel, at 338 K, was heat treated to different temperature and identified the temperature range (1083 – 1163 K) of the nanocomposite formation through XRD patterns. From XRD patterns, crystallite size of NiAl2O4 particles...

To automatically annotate songs with descriptive keywords, a variety of content-based auto-tagging strategies have been proposed in recent years. Different approaches may capture different aspects of a song’s musical content, such as timbre, temporal dynamics, rhythmic qualities, etc. As a result, some auto-taggers may be better suited to model the acoustic characteristics commonly associated w...

In this work, the porous ceramic multilayer ultrafiltration membrane is developed. Macroporous support was formed by extrusion of paste derived from natural Moroccan Sahara Clay. The microporous interlayer then performed slip casting zirconia commercial powders and finally active toplayer obtained solgel route using TiO 2 sol. performance evaluated pores diameter, thickness top layer, water flu...

Zinc Oxide doped with chromium and cobalt, in form of powder with nanometer size has been prepared by typical solgel route, with assistance of microwave radiations. The as prepared material’s structure was characterized under XRays Diffraction(XRD) and Scherrer formula was used to find the crystal size. The materials also have been characterized under Scanning Electron Microscope(SEM) and Trans...

Double optical monitoring is applied to determine the influence of main process parameters on the formation of sulfated zirconia and self-assembled mesoporous silica solgel films by dip coating. In addition, we analyze, for the first time to the best of our knowledge, the influence of withdrawal speed, temperature, and relative humidity on refractive-index and physical thickness variations (unc...

Magnetotransport properties of La0.5−xHoxCa0.5MnO3 (x = 0.05 and 0.1) polycrystalline samples were investigated in order to study the effect magnetic Ho3+ ions on stability charge ordering (CO) phase coexistence pristine La0.5Ca0.5MnO3. Our synthesized by using solgel method. Temperature dependence resistivity shows an insulating behavior with high values, confirming presence long-range CO. The...

Thomas Karcher Institute for Program Structures and Data Organization Karlsruhe Institute of Technology 76128 Karlsruhe, Germany [email protected] Christopher Guckes Institute for Program Structures and Data Organization Karlsruhe Institute of Technology 76128 Karlsruhe, Germany [email protected] Walter F. Tichy Institute for Program Structures and Data Organization Karlsruhe Institute...