in this research work, we report a simple method called reflux condensation method for synthesizing co3o4 nanoparticles using cheap chemicals such as, cobalt acetate (precursor salt), sodium monododecyl sulphate - sds (surfactant) and n, n - dimethylformamide - dmf (solvent). the prepared materials were heat treated at 200, 400, 600 and 800 oc for each 2 h to get phase pure product. the calcine...

The purpose of this study was to investigate the effect of textual enhancement types on English as Foreign Language ( EFL ) learn er s ’ grammatical awareness of simple and complex structures. A nu m- ber of 104 learners from Ayandegan Institute, in Tehran, participated in this study. To homogenize the samples, the researchers administered a placement Michigan Test of English language to the p...

Co2(CO)8 was found to be an effective and structurally simple catalyst for the functionalization of polymethylhydrosiloxane into functional silicone fluids using terminal alkenes cross-linked materials unconventional tethers.

The new iron carbonyl cyanide trans-[Fe(CN)(2)(CO)(3)](2)(-), [2](2)(-), forms in high yield via photosubstitution of Fe(CO)(5) with 2 equiv of Et(4)NCN. Protonation of [2](2)(-) generated [HFe(CN)(2)(CO)(3)](-), [2H](-), the first H-Fe-CN-CO species. Further protonation gives dihydrogen. This simple system provides insights into hydrogen evolution by the hydrogenase enzymes, which also feature...

The concept of co-allocation provides a simple mechanism to request and bind resources in a coordinated fashion in Grids across virtual organization boundaries. We have designed an advanced multistage co-allocation strategy based on resource hierarchies defined through user-specific patterns. The model manages simple flows between resources to perform managed job executions. We demonstrate the ...

We present very short and simple proofs of such facts as co-frame distributivity of sublocales, zero-dimensionality of the resulting co-frames, Isbell’s Density Theorem and characteristic properties of fit and subfit frames, using sublocale sets.

the perovskite-type oxides strontium-substituted lanthanum nickelate (lsno) were prepared by a coprecipitation method in the present of octanoic acid as surfactant. the phase composition, morphology,lattice parameters and size of nanoparticles in these materials were characterized through fourier transform infrared spectroscopy (ft-ir), x-ray diffraction (xrd), scanning electron microscopy (sem...

One of the hallmarks of a co-located agile team is the simple and open flow of information between its members. In a co-located setting, peripheral awareness, osmotic communication and simple information radiators support agile principles such as collective ownership, minimal documentation and simple design, and facilitate smooth collaboration. However in a dispersed agile team, where individua...

a simple, highly sensitive, accurate and selective method for determination of trace amounts of co(ii) in water samples is presented. isocyanate treated graphite oxides (igos) solid phase extraction adsorbent was synthesized by covalently isocyanate onto the surfaces of graphite oxides. the stability of a chemically (igos) especially in concentrated hydrochloric acid which was then used as a re...