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 | On the Interaction of Oblique Shock Wave with a Yawed Wedge
Author : Biswas, R.K.;Srivastava, R.S.
Source : Defence Science Journal ; Vol:16(4) ; 1966 ; pp 231-234
Subject : 620.261 Explosives ;623.454.833 Shock Waves
Keywords : Reflected shock;Yaw ;Shock Waves
Abstract : When an oblique shock configuration encounters an infinite yawed wedge, it has been found that the region between the incident and the reflected shock, called intermediate region, remains undisturbed for any angle of yaw. |
| | Interaction of Oblique Blast Wave
Author : Chopra, M.G.;Srivastava, R.S.
Source : Defence Science Journal ; Vol:16(4) ; 1966 ; pp 217-222
Subject : 620.261 Explosives
Keywords : Oblique shock;Reflection occurs;Yawed thin wedge
Abstract : The interaction of oblique shock configuration with an infinite yawed thin wedge has been considered. It has been established that Mach reflection occurs when uniform relative outflow from the reflected shock is supersonic and that diffraction occurs when the uniform relative outflow is sonic or subsonic. |
| | A Note on Diffraction of Oblique Shock Wave
Author : Srivastava, R.S.
Source : Defence Science Journal ; Vol:15(3) ; 1965 ; pp 169-170
Subject : 623.454.833 Shock Waves
Keywords : Heats ;Shock Configuration
Abstract : The region between incident and reflected shocks remains undisturbed for all values of Gamma, Gamma being the ratio of specific heats, after the shock configuration has crossed the small bend. |
| | Explosive Properties of Chromium III and Maganese II Picramates
Author : Agrawal, S.P.;Srivastava, R.S.
Source : Defence Science Journal ; Vol:27(2) ; 1977 ; pp 75-76
Subject : 620.261 Explosives
Keywords : Metal picramates;Stereochemistry;Magnetic susceptibility;Electronic spectra
Abstract : Metal picramates have been of more interest than the picrates due to their ease of preparation and increased sensitivity towards heat and shocks. Recently Agrawal and Agrawal have prepared some transition metal picramates and investigated their stereochemistry from infrared and magnetic susceptibility measurements. They have also investigated the explosive properties of these metal picramates. Also, Aggrawal and Singh have prepared picramates of chromium (III) and maganese(II) but have only investigated their stereochemistry from infrared, electronic spectra and magnetic susceptibility measurements. However, since, the explosive properties may throw some direct utility of the picramates as a primary explosive. A detailed study of the explosive properties have been carried out. |
| | Obique reflection of shock wave
Author : Srivastava, R.S.
Source : Defence Science Journal ; Vol:13(4) ; 1963 ; pp 283-284
Subject : 623.454.833 Shock Waves;623.4 Armaments and Ballistics
Keywords : Physical ground ;Mathematical approach
Abstract : Abstract not available. |
| | Chemistry of Metal Benzylidene Picramate Part III Benzylidene Picramates of Zinc Cadmium and Mercury
Author : Srivastava, R.S.;Agrawal, S.P.;Bhargava, H.N.
Source : Defence Science Journal ; Vol:29(2) ; 1979 ; pp 91-96
Subject : 54 Chemistry
Keywords : Chloride solutions;I.R. spectral;Benzylidene picramates
Abstract : Benzylidene picramates of zinc, cadmium and mercury have been prepared by treating the corresponding aqueous sulphate and chloride solutions with sodium salt of 4-dimethylaminobenzylidence-2-hydroxy-3, 5-dinitroaniline. A metal: ligand ratio of 1:2 has been established in all these cases. I.R. spectral studies of metal benzylidene picramates show N M coordination (where M is zinc, cadmium or mercury). Explosive properties of these benzylidene picramates have also been studied and it was found that the thermal stability increases as the atomic radius decreases or ionization potential increases. |
| | Note on Structural Studies on Pd II and Uo/sub2/ II Picramates
Author : Srivastava, R.S.
Source : Defence Science Journal ; Vol:32(2) ; 1982 ; pp 131-133
Subject : 54 Chemistry
Keywords : Amide group ;Phenolic oxygen
Abstract : Structure of the picramtes of Pd(II) and Uo/sub2/(II) have been studied with the help of molar conductance, magnetic susceptibility, electronic, infra-red /sup1/-NMR spectra and TG studies. These studies indicate that the Pd(II) picramate is square planar and Uo/sub2/(II) picramate octahedral, involving covalent bonding through the phenolic oxygen and coordination through the nitrogen of amide group. |
| | Fe(II), Co(II), Ni(II), Cu(II), Zn(II), Cd(II) and Hg(II) Complexes of 4 Nitrobenzylidene 2 Hydroxyl 3 5 Dinitroaniline
Author : Srivastava, R.S.
Source : Defence Science Journal ; Vol:32(3) ; 1982 ; pp 219-223
Subject : 54 Chemistry;546 Inorganic Chemistry
Keywords : Explosion properties ;Transition metal complex;Ligand
Abstract : Complexes of Fe(II), Co(II), Ni(II), Cu(II) Zn(II), Cd(II), and Hg(II) with 4-nitrobenzylidene-2-hydroxy-3,5-dinitroaniline (hereafter abbreviated as nhd) have been prepared and characterized by their microanalyses, molar conductance, magnetic susceptibility, electronic and IR spectra. The donor sites of the ligand have been derived from the results of infrared spectra. |
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