NOPR Collection:

Study of the oceanic salt system Na⁺,K⁺, Mg²⁺ /CI^-, SO-H₂O at 35°C and 100°C-Their application for isothermal evaporation

Sun, 01 May 1994 00:00:00 GMT

Title: Study of the oceanic salt system Na⁺,K⁺, Mg²⁺ /CI^-, SO-H₂O at 35°C and 100°C-Their application for isothermal evaporation Authors: Susarla, V R K S Abstract: Quinary aqueous system of Na⁺,K⁺, Mg²⁺ /CI^-, SO have been studied at 35°C and 100°C. The systems have been represented by Lowenherz’s orthogonal projection. The resulting data have been applied in the recovery of chemicals from concentrated sea water (brine and bittern after recovery of salt). Page(s): 197-198

Electrodeposition of dysprosium from non-aqueous bath

Sun, 01 May 1994 00:00:00 GMT

Title: Electrodeposition of dysprosium from non-aqueous bath Authors: Kumbhar, P P; Lokhande, C D Abstract: The electrodeposition of dysprosium has been carried out from non-aqueous bath onto different substrates. The deposition potentials are found to be substrate and solvent dependent. Ethanol solvent and sodium acetate as a complex are found suitable for the dysprosium deposition. Uniform yellowish-gray films of thickness upto 0.20 microns are deposited. Page(s): 194-196

Determination or B and Cd in MgF2 by DC arc optical emission spectrometry with on-line background correction approach

Sun, 01 May 1994 00:00:00 GMT

Title: Determination or B and Cd in MgF2 by DC arc optical emission spectrometry with on-line background correction approach Authors: Biswas, S S; Dixit, V S; Murty, P S Abstract: Using DC arc optical emission spectrometry, B and Cd have been estimated in MgF₂in the concentration range, 1-20 ppm. An on-line background correction procedure has been developed to obtain net peak intensities for B249.77 nm, Cd 228.80 nm and 241.87 nm (internal standard) lines. The background corrected peak intensities provided linear calibration plots. The mean relative standard deviation of the method is found to be 11.1 % for B and 9.8% for Cd. Page(s): 191-193

Wear and friction studies of some substituted benzothiazolyl thiocarbamides as potential EP additives

Sun, 01 May 1994 00:00:00 GMT

Title: Wear and friction studies of some substituted benzothiazolyl thiocarbamides as potential EP additives Authors: Bhattacharya, A; Singh, A P; Singh, R; Verma, V K Abstract: Four-ball tests using 12.7 mm diameter steel bearing balls have been conducted to evaluate the wear and friction reducing properties of admixtures of paraffin oil with potentially active 1-[2-(6- substituted) benzothiazolyl]-thiocarbamides and sulphurphosphorous commercial additive (0.5% wt/vol). The parameters determined are wear-scar diameter, friction coefficient, initial seizure load, 2.5 s seizure delay load, weld load, mean Hertz load and flash temperature parameter, The additive, 1-[2-(6-Chloro) benzothiazolyl] thiocarbamide appeared to be the most effective. The topography and tribochemistry of the wear-scar surface have been studied by SEM and AES techniques, respectively. Page(s): 184-190

NOPR Collection:

Study of the oceanic salt system Na+, K+, Mg2+ /CI-, SO-H2O at 35°C and 100°C-Their application for isothermal evaporation

Electrodeposition of dysprosium from non-aqueous bath

Determination or B and Cd in MgF2 by DC arc optical emission spectrometry with on-line background correction approach

Wear and friction studies of some substituted benzothiazolyl thiocarbamides as potential EP additives

Study of the oceanic salt system Na⁺,K⁺, Mg²⁺ /CI^-, SO-H₂O at 35°C and 100°C-Their application for isothermal evaporation