NOPR Collection:

Photophysics of an 1H-1,5- benzodiazepine in some selected solvents

Sat, 01 Nov 1997 00:00:00 GMT

Title: Photophysics of an 1H-1,5- benzodiazepine in some selected solvents Authors: Sur, Debjani; Bera, Subhas Chandra; Chattopadhyay, Nitin; Patra, Goutam Kumar; Datta, Dipankar Abstract: Results of some preliminary steady state, time-resolved and theoretical studies on the photo physics of 2.3-dihydro-2,2,4 -trimethyl-1H-1,5-benzodiazepine (L), an anti-convulsant agent, are reported here, Although L is weakly fluorescing in all the solvents studied, its luminescence is highly solvent-sensitive. It seems that the protic solvents have an important role in the fluorescence behaviour of L. Participation of the methylene hydrogens in the solvent assisted proton transfer has been proposed. Page(s): 917-919

Non-equilibrium growth patterns and oscillations during electrodeposition of metals in batch and flow reactors

Sat, 01 Nov 1997 00:00:00 GMT

Title: Non-equilibrium growth patterns and oscillations during electrodeposition of metals in batch and flow reactors Authors: Das, Ishwar; Singh, Nivedita; Varshney, Neelam; Kumar, Anuj Abstract: New results on the non-equilibrium growth patterns of silver have been reported in a batch reactor using cells with different electrodic arrangements. Scanned picture of silver aggregate has been analysed and fractal dimension calculated bybox counting method. A transition from dendritic to a net like morphology is observed on addition of copper nitrate. Cathode potential changes with time have been monitored in batch and flow reactors and oscillations of small amplitude observed. Next area plots indicate that oscillations are periodic Page(s): 920-925

Oxidative coupling of methane on LnBa₂Cu₃O₇-x (123; Ln=Sm,Dy or Y) perovskites

Sat, 01 Nov 1997 00:00:00 GMT

Title: Oxidative coupling of methane on LnBa₂Cu₃O₇-x (123; Ln=Sm,Dy or Y) perovskites Authors: Srinivasan, C; Viswanathan, B; Mulla, S A R; Choudhary, V R Abstract: The oxidative coupling of methane (OCM) has been studied on LnBa₂Cu₃O_7-x (Ln = Sm,Dy,Y) with and without steam in the feed. It has been observed that the presence of steam enhances the C2 selectivity. The samarium containing compound is found to be a better system among these three compounds because of the higher formation of BaCO₃ during the reaction thus increasing the basicity of the system. Page(s): 926-930

Host-guest interactions: Part 2- Volumes of β-cyc1odextrin+ 18-crown-6 ether+water and sucrose + 18-crown-6 ether + water ternary systems at 25°C

Sat, 01 Nov 1997 00:00:00 GMT

Title: Host-guest interactions: Part 2- Volumes of β-cyc1odextrin+ 18-crown-6 ether+water and sucrose + 18-crown-6 ether + water ternary systems at 25°C Authors: Bakshi, Mandeep Singh Abstract: Densities of β-cyclodextrin+18-crown-6 ether + water (Cyc+CR+W) and sucrose+18-crown-6 ether+water (SUC+CR+W) ternary systems have been estimated at 25°C. From densities. mean apparent molar volumes of CYC+CR(V_fcc) and SUC+CR(V_fcc) in W,CR, (V_f.cr in CYC+W and SUC+W, and of CYC (V_fcyc) and SUC (V_fsuc) in CR+W in each composite mixture have been evaluated. Variation of V_f_,cc V_f_,sc, V_f_,cr and V_f_,suc with respect to the respective molality shows the existence of intermolecular interactions. Page(s): 931-937

NOPR Collection:

Photophysics of an 1H-1,5- benzodiazepine in some selected solvents

Non-equilibrium growth patterns and oscillations during electrodeposition of metals in batch and flow reactors

Oxidative coupling of methane on LnBa2Cu3O7-x (123; Ln=Sm,Dy or Y) perovskites

Host-guest interactions: Part 2- Volumes of β-cyc1odextrin+ 18-crown-6 ether+water and sucrose + 18-crown-6 ether + water ternary systems at 25°C

Oxidative coupling of methane on LnBa₂Cu₃O₇-x (123; Ln=Sm,Dy or Y) perovskites