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Excitons and quasimolecules in quasi zero - dimensional nanostructures Scientia Research LibraryJournal of Applied Chemistry2348 - 0408201423 Sergey I. Pokutnyi[1], Petr P. Gorbyk[2], Nikolay F. Zhovnir[3] Page No. 1-4 1 This review summarizes the results of theoretical studies of an excitons and quasimolecules (biexcitons) formed from spatially separated electrons and holes (the hole is in the semiconductor spherical quantum dot volume, and the electron is localized at the outer spherical surface of the quantum dotdielectric matrix interface. Keywords: excitons, biexcitons, quasimolecules, semiconductor (dielectric) quantum dots, binding energy of excitons, nanolaser. http://www.scientiaresearchlibrary.com/archive-abs.php?arc=208http://www.scientiaresearchlibrary.com/archive/JAC-2014-2-3-038-1-4.pdf

Synthesis, characterization and antimicrobial studies of some Mannich bases derived from phenylethyl amine and their transition metal complexes Scientia Research LibraryJournal of Applied Chemistry2348 - 0408201423 A. Abdul Jameel[1], M. Syed Ali Padusha[2] , K. Sulthan Syed Ibrahim[3*] Page No. 5-11 1 In the present study, an attempt has been made to synthesize Mannich bases (L1 to L4) using 2- phenylethylamine, benzaldehyde and amide moieties such as semicarbazide, thiosemicarbazide, urea and thiourea are employed as compound containing active hydrogen atom. Mannich bases thus formed were characterized by physical methods such as TLC, elemental analysis and melting point. Metal complexes of [MCl2(L1)2], [M(L1)2(H2O)2]Cl2 [M=Co(II), Ni(II), Cu(II) and Zn(II)] of ligand (L1) were also prepared. The structures of newly synthesized compounds, complexes, mode of binding and overall geometry were characterized through electronic, IR, 1H NMR, 13C NMR and Mass spectral studies. Elemental analysis, conductance measurements, TGA and DTA studies have been characterized to establish the structure of complexes. In vitro antimicrobial studies of L1 ligand and its transition metal complexes and all other Mannich bases L2 to L4 were recorded against certain pathogenic Gram positive bacteria such as S. aureus, S. faecalis and certain pathogenic Gram negative bacteria such as E. Coli, P. aeruginosa, along with antifungal activity against C. albicans. Keywords: Metal complexes of Mannich base, Multicomponent reaction, NO donors 2- phenylethylamine, Antimicrobial activities http://www.scientiaresearchlibrary.com/archive-abs.php?arc=209http://www.scientiaresearchlibrary.com/archive/JAC-2014-2-3-039-5-11.pdf

Determination of Acoustical Parameters In Binary Liquid Mixture of Diethyl Ether And Malathion by Ultrasonic Measurement Scientia Research LibraryJournal of Applied Chemistry2348 - 0408201423 [1]Amit Kumar, [1a]Ashish kumar Saxena,[2]Rajeev Agarwal Page No. 12-16 1 Binary liquid mixture find practical applications in most chemical processes, their properties are less known. Derived parameters from ultrasonic speed measurements provide qualitative information regarding the nature and strength of interaction in liquid mixtures. Organophosphate pesticides such as malathion have been used as alternatives to dichloro-diphenyl-trichloroethene (DDT) and other chlorinated hydrocarbon pesticides. Diethyl ether is also used as solvent in various organic syntheses. Thus malathion and diethyl ether mixed solvents would enable us to have a large no. of solvents with appropriate physic-chemical properties, which can be used for a particular chemical process. Therefore present study was undertaken in order to have deeper understanding of the intermolecular interaction between the components of the above binary liquid mixture. Keywords: Organophosphorus pesticides, Acoustical parameters, Molecular interaction. http://www.scientiaresearchlibrary.com/archive-abs.php?arc=210http://www.scientiaresearchlibrary.com/archive/JAC-2014-2-3-040-12-16.pdf

Analysis of Diethylether And Methyl Parathion Pesticide by Ultrasonic Measurements Scientia Research LibraryJournal of Applied Chemistry2348 - 0408201423 [1]Amit Kumar, [1a]Ashish kumar Saxena,[2]Rajeev Agarwal Page No. 17-20 1 Binary liquid mixtures find practical applications in most physical and chemical processes. Derived parameters from ultrasonic velocity measurement provide qualitative information regarding the nature and strength of interactions in liquid mixtures. The ultrasonic velocity, density and viscosity have been measured for the binary liquid mixture of Diethyl ether with pesticide (methyl parathion) at 303K and 308K. The experimental data have been used to calculate the acoustical parameters namely isentropic compressibility, intermolecular free length, free volume, specific acoustic impedance and shears relaxation time. These parameters have been discussed in the light of molecular interaction present in the mixture. Keywords: Pesticides, Acoustical parameters, Molecular interaction. http://www.scientiaresearchlibrary.com/archive-abs.php?arc=211http://www.scientiaresearchlibrary.com/archive/JAC-2014-2-3-041-17-20.pdf

Catalytic Effect of Sodium Nitrite in Carbothermal Reduction of Barites Scientia Research LibraryJournal of Applied Chemistry2348 - 0408201423 Jyotsna Agarwal, Page No. 21-26 1 The paper reports the effect of sodium nitrite on carbothermal reduction of barites. In practice, in most industrial reductive operations the extent of reduction seldom exceeds 50 percent. After admixing the sodium nitrite in matrix the carbothermal reduction of barites has shown encouraging results. Yields have been found to increase to the order of 57 percent. This may contribute a lot to the economy of the industry. Keywords: Barite, coke, catalyst, sodium nitrite, carbothermal reduction. http://www.scientiaresearchlibrary.com/archive-abs.php?arc=229http://www.scientiaresearchlibrary.com/archive/JAC-2014-2-3-042-21-26.pdf