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ORE at CSIR-Institute of Minerals and Materials Technology: Recent submissions

Now showing items 2871-2880 of 3793

Electrowinning of cobalt from acidic sulphate solutions - Effect of chloride ion

Pradhan, N.; Singh, P.; Tripathy, B.C.; Das, S.C. (Minerals Engineering, 14(7), 2001: 775-783)

Cobalt electrowinning from acidic sulphate solution was carried our in the presence and absence of chloride ion in the electrolyte. The effect of current density, electrolyte flow rare and temperature on cobalt electrowinning ...
Enhanced metal-insulator transition and magnetoresistance in melt-processed La0.67Ca0.33MnO3 and Ho-doped manganites

Pradhan, A.K.; Roul, B.K.; Feng, Y.; Wu, Y.; Mohanty, S.; Sahu, D.R.; Dutta, P. (Applied Physics Letters, 78(11), 2001: 1598-1600)

We report significant enhancement of magnetoresistance (MR) in melt-processed La0.67Ca0.33MnO3 (LCM) and in Ho-doped LCM samples. The LCM system exhibits surprising enhancement of metal-insulator transition (T-IM) that ...
Molybdenum x-ray emission spectroscopic study of vacancy-induced electronic states in V2O5-MoO3 thin films and powders

Acharya, B.S.; Pradhan, R.L.D.; Mishra, P.; Nayak, B.B. (X-Ray Spectrometry, 29(4), 2000: 279-284)

X-ray emission spectra in compound thin films are scarce, although such studies in metals, alloys and other inorganic compounds are available. In this study, compound thin films of V2O5-MoO3 and powders of same compositions ...
The electrical double layer at hydrous manganese dioxide/electrolyte interface

Tripathy, S.S.; Kanungo, S.B.; Mishra, S.K. (Journal Of Colloid And Interface Science, 241(1), 2001: 112-119)

The interfacial properties of two hydrous oxides of manganese, namely an amorphous variety and a poorly crystalline synthetic birnessite, in different electrolyte media, have been studied by using a batch potentiometric ...
The tephroite, spessartine, pyroxmangite and rhodochrosite-bearing mineral assemblages of the manganese ores in the Manomunda-Goriajhar area of the Gangpur Group, Orissa, India. Petrological and chemical investigations and their genetic implications

Mucke, A.; Mohapatra, B.K.; Nayak, Bibhuranjan (Neues Jahrbuch Fur Mineralogie-Abhandlungen, 176(1), 2001: 21-43)

The manganese ores of the Manomunda-Goriajhar area belong to the Precambrian Goriajhar Formation of the Gangpur Group in the west central part of the Sundergarh district, Orissa, India. These rocks are known to be of ...
Submerged beach ridge lineation and associated sedentary fauna in the innershelf of Gopalpur coast, Orissa, Bay of Bengal

Rao, K.M.; Murthy, K.S.R.; Reddy, N.P.C.; Subrahmanyam, A.S.; Lakshminarayana, S.; Rao, M.M.M.; Sarma, K.V.L.N.S.; Premkumar, M.K.; Sree, A.; Bapuji, M. (Current Science, 81(7), 2001: 828-833)

Detailed echosounding and side-scan sonar surveys coupled with SCUBA-diving operations in the innershelf region of Gopalpur, Orissa coast revealed the existence of a submerged NE-SW trending ridge lineation between the ...
Surface nitriding of graphite substrate by plasma focus device towards synthesis of carbon nitride coating

Nayak, B.B.; Acharya, B.S.; Mohanty, S.R.; Borthakur, T.K.; Bhuyan, H. (Surface & Coatings Technology, 145(1-3), 2001: 8-15)

Circular graphite substrates have been nitrided in a plasma focus device. Nitrogen ions consisting of 100-ns pulses emanating from a Mather type plasma focus device were allowed to hit the surfaces of graphite substrates ...
Viscosities, densities and excess properties of binary mixtures of di-(2-ethyl hexyl) phosphoric acid (DEHPA) with benzene, toluene and ortho-xylene

Swain, N.; Singh, S.K.; Panda, D.; Chakravortty, V. (Journal Of Molecular Liquids, 94(3), 2001: 233-248)

Viscosities and densities of binary liquid mixtures of di-(2-ethyl hexyl) phosphoric acid (DEHPA) with benzene, toluene and o-xylene have been determined at 30, 35, 40 and 45 degreesC. The mixture viscosity, eta (m) is ...
Electrowinning of copper from sulfate electrolyte in presence of sulfurous acid

Panda, B.; Das, S.C. (Hydrometallurgy, 59(1), 2001: 55-67)

The electrowinning of copper from acidic sulfate solution in the presence of sulfurous acid using a graphite anode was investigated. The effects of operating variables including sulfur dioxide concentration, copper ...
Arc plasma nitriding of low carbon steel

Mishra, S.C.; Nayak, B.B.; Mohanty, B.C. (Surface & Coatings Technology, 145(1-3), 2001: 24-30)

Arc plasma nitriding of low carbon steel was carried out in the temperature range 1000-1100 degreesC under different gas (Ar, N-2, H-2) configurations for 15 min each. The plasma nitrided surfaces were characterized by ...

Now showing items 2871-2880 of 3793

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