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T.S. Anirudhan,J.R. Deepa,Anoop S. Nair 한국공업화학회 2017 Journal of Industrial and Engineering Chemistry Vol.47 No.-
Chemically modified graphene oxide (CMGO)/nanohydroxy apatite (nHA) composite was synthesized viaa facile chemical modification of graphene oxide (GO) by triethyltetramine (TETA). Band gap of GO couldbe tuned for photo degradation under visible light through surface modification as well as by thecomposite formation with nHA. Pseudo-second-order kinetic model related the drug adsorption whiledegradation process followedfirst-order kinetics with Sips isotherm as the bestfitted model. Feasibilityof photo catalyst in the degradation of AM was tested using waste water samples collected from pollutedarea near to poultryfields and animal farm houses.
ON r-DYNAMIC COLORINGS OF THE FRIENDSHIP GRAPH FAMILIES
G. NANDINI,M. Venkatachalam,T. DEEPA,I. N. CANGUL 장전수학회 2021 Advanced Studies in Contemporary Mathematics Vol.31 No.2
Coloring of graphs is an important area in graph theory with numerous applications including the most famous problems related to graphs. An r-dynamic coloring of a graph G is a proper coloring c of the vertices such that |c(N(v))| ≥ min {r, d(v)}, for each vertex v ∈ V (G). The r-dynamic chromatic number of a graph G is the minimum k such that G has an r-dynamic coloring with k colors. In this paper, we obtain the r-dynamic chromatic number of Pn + Fn, Kn + Fn, L(Fn) and central graphs of the friendship graph.
K.C. Preetha,K.V. Murali,A.J. Ragina,K. Deepa,T.L. Remadevi 한국물리학회 2012 Current Applied Physics Vol.12 No.1
The lead sulfide (PbS) thin films were deposited on glass substrate using successive ionic layer adsorption and reaction (SILAR) method at different pH of the cationic precursor, keeping the pH of the anionic precursor invariant. In this work, we establish that the pH of the cationic precursor and in turn the size of the crystallites affects the optical and electrical properties of PbS thin films. The characterization of the film was carried out using X-ray diffraction, scanning electron microscopy, optical and electrical measurement techniques. The presence of nanocrystallites was revealed by optical absorption and structural measurements. The PbS thin films obtained under optimal deposition conditions were found to be polycrystalline with face centered cubic structure. The lattice parameter, grain size, micro strain,average internal stress and dislocation density in the film were calculated and correlated with pH of the solution. The values of average crystallite size were found to be in the range 16e23 nm. Optical studies revealed the existence of direct and indirect band gap values in the range 0.99e1.84 eV and 0.60e0.92 eV, respectively. The room temperature resistivity of the synthesized PbS films was in the range of 1.2 ×107 to 3.5×107Ω cm.