Institute Publications: Recent submissions

Now showing items 3351-3360 of 3902

Thermal decomposition of rare-earth-doped calcium oxalate .1. Doping with lanthanum, samarium and gadolinium

Patnaik, U.; Muralidhar, J. (Thermochimica Acta, 274, 1996: 261-272)

The thermal decomposition of calcium oxalate doped with lanthanum, samarium or gadolinium has been investigated using thermogravimetry (TG) and differential thermal analysis (DTA). The kinetics of the decomposition steps ...
Influence of fresh water influx on the ratio of Ca, Mg and F with respect to Cl in the coastal water of Orissa, east coast of India

Das, J.; Sahoo, R.K. (Indian Journal Of Marine Sciences, 25(1), 1996: 74-77)

Concentration of Ca, Mg and F with respect to chlorinity was studied in the major river mouths and coastal water of Orissa. A decreasing trend was observed in the ratio of the elements to chlorinity towards the off-shore ...
Distribution of heavy metals in the eggs and hatchlings of olive ridley sea turtle, Lepidochelys olivacea, from Gahirmatha, Orissa

Sahoo, G.; Sahoo, R.K.; Mohantyhejmadi, P. (Indian Journal Of Marine Sciences, 25(4), 1996: 371-372)

Shell and yolk-albumen of fresh eggs, hatched egg shells and newly emerged hatchlings of olive ridley sea turtle, Lepidochelys olivacea, along with eight nesting beach sand samples showed higher iron, zinc and lead ...
Preparation of lanthanum-beta-alumina with high surface area by a homogeneous precipitation method for use as catalyst support

Parida, K.M.; Das, J.; Rao, S.B. (Indian Journal Of Engineering And Materials Sciences, 3(2), 1996: 79-82)

Samples containing mixtures of 5 mol % La2O3 and 95 mol % Al2O3 were prepared by homogeneous precipitation method with or without the presence of various anions, and calcined at different temperatures in the range of ...
Reductive dissolution of hematite in hydrochloric acid medium by some inorganic and organic reductants: A comparative study

Parida, K.M.; Das, N.N. (Indian Journal Of Engineering And Materials Sciences, 3(6), 1996: 243-247)

Dissolution behaviour of naturally occurring hematite (> 97% Fe2O3) in hydrochloric acid medium with or without the presence of reductants has been investigated as a function of acid concentration, temperature, liquid/solid ...
Galvanic interaction between manganese dioxide and pyrite

Paramguru, R.K.; Nayak, B.B. (Journal Of The Electrochemical Society, 143(12), 1996: 3987-3991)

This paper examines galvanic interaction of the MnO2-FeS2 couple through polarization and leaching studies. Large galvanic currents, observed between electrodes of this couple, increase further with an increase in H+ ...
Effect of sulfate ions on the formation and physico-chemical properties of ferric oxide hydroxides prepared by a homogeneous precipitation method .1.

Parida, K.M.; Das, J. (Journal Of Materials Science, 31(8), 1996: 2199-2205)

The effects of sulfate ions on the formation and physico-chemical properties of ferric oxide hydroxides were studied using various techniques. Samples prepared from 0.1 M Fe(NO3)(3) solution without sulfate ions contain ...
Chemical reaction bonding of building blocks using red mud and orthophosphoric acid binder

Gumaste, J.L.; Swain, B.C.; Mohanty, B.C.; Murty, J.S. (Journal Of Materials Science Letters, 15(19), 1996: 1667-1668)
Kinetics and mechanism of the anation of (alpha beta)-hydroxo(tetraethylenepentamine)cobalt(III) by thiosulfate, the base hydrolysis of the (sulfur-bonded) thiosulfato(tetraethylenepentamine)-cobalt(III) and photochemistry of oxygen and sulfur-bonded thiosulfato complexes

Das, R.; Das, N.; Dash, A.C.; Roy, A.; Sarkar, S.K. (Transition Metal Chemistry, 21(1), 1996: 90-94)

The reaction of (alpha beta)-(tetren)CoOH2+ with S2O32- in the 7.25-8.28 pH range at 20-40 degrees C yielded S- (yellow) and O- (purple) bonded thiosulfato(tetren)cobalt(III) complexes, the former in larger quantities. The ...
Catalytic properties of manganese nodules

Parida, K.M.; Satapathy, P.K.; Das, N.N.; Rao, S.B. (Journal Of Scientific & Industrial Research, 55(4), 1996: 234-245)

The mineral composition, mineralogy and surface properties of manganese nodules and their implications in the catalytic activity are described. The high surface area (90-400m(2) nodules increases on calcination up to 400 ...

Now showing items 3351-3360 of 3902

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