Browsing by Subject "nickel"
Now showing items 1-17 of 17
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Atypical ferromanganese micronodules from middle fan-valley system, Bay of Bengal
(Current Science Association, 1994)Ferromanganese micronodules having botryoidal and spheroidal morphogroups have been observed over a 0.22 million km@u2@@ area from the middle fan region of the Bay of Bengal. The bulk micronodules have 26.26% Mn, 1.02% Fe, ... -
Bonanza from the frozen continent
(1983)Antarctica is a circumpolar continent surrounded by the Southern Ocean which is about 36 million sq kms and about 10% of the worlds oceans. Ice covers 98% of the continent and the rest is a non glacial terrain. Temperatures ... -
Chemistry and possible resource potential of cobalt rich ferromanganese crust from Afanasiy-Nikitin seamount in the Indian Ocean
(Geological Survey of India, 1999)Samples of ferromanganese encrustations (fe-Mn crusts) dredged from the upper flank of the Afanasiy-Nikitin seamount, above the Carbonate Compensation Depth (CCD) in the Northern Central Indian Ocean (NCIO) were analysed ... -
Concentration of metals in fishes from Thane and Bassein creeks of Bombay, India
(Council of Scientific and Industrial Research, New Delhi, 1999)Concentration of Cu, Zn, Cd, Pb and Ni in different tissues of 10 species of fishes from Thane and Bassein creeks were estimated for a period of 15 months. The trend in bioaccumulation indicated that irrespective of species ... -
Concentration of metals in shrimps and crabs from Thane-Bassein creek system, Maharashtra
(Council of Scientific and Industrial Research, New Delhi, 1999)Levels of Cu, Zn, Cd, Pb and Ni in shrimps and crabs from Thane-Bassein creek system, Maharashtra, India were evaluated for a period of one year and reported as baseline for future monitoring of this vital ecosystem. The ... -
Corrosion of metals and alloys in the coastal and deep waters of the Arabian Sea and the Bay of Bengal
(NISCAIR, New Delhi, 1993)Corrosion rate of mild steel (MS), stainless steel (SS), copper, brass and cupro-nickel has been determinEd. by exposing metallic coupons in coastal and oceanic waters of the Arabian Sea and Bay of Bengal. Amongst the ... -
Deposition of Mn-Cu-Ni-enriched sediments during glacial period in the Central Indian Basin
(Current Science Association, Bangalore, India, 1993)Two siliceous sediment cores collected from the Central Indian Basin have been analysed for organic carbon, biogenic silica, Al, Mn, Ni and Cu content. The concentrations of Mn, Cu and Ni showed one order of magnitude ... -
Distribution of iron, manganese, cobalt and nickel in sediment cores of the northeastern Arabian Sea
(Geological Society of India, 1976)A study of the distribution of iron, manganese, cobalt and nickel in sediment cores from the shelf, slope and basin regions of Bombay-Kathiawar coast of India shows that cobalt and nickel are derived from the overlying sea ... -
Ferromanganese micronodules from Bengal Fan
(Museo Geologico di Bologna, 1993)The occurrence of ferromanganese micronodules, hitherto unreported from any fan-valley system of the world, has been recorded from over 0.22 million km sup(2) area located in the middle fan region of the Bay of Bengal. ... -
Ferromanganese nodules from the Central Indian Ocean Basin
(CRC Press, USA, 2000)In order to delineate a mine site for ferromanganese nodules, extensive surveys were conducted in Central Indian Ocean Basin. Mapping of the basin by multibeam swath bathymetry (Hydrosweep) has revealed many new bottom ... -
Ferromanganese oxides on sharks' teeth from Central Indian Ocean Basin
(Council of Scientific and Industrial Research, New Delhi, 1999)The mineralogy, composition and growth rates of ferromanganese (Fe-Mn) oxides over the sharks' teeth from the Central Indian Ocean Basin are presented. The trends of metal enrichment (Mn, Ni, Cu and Zn) and depletion (Fe ... -
Geochemistry of deep-sea sediment cores from the Central Indian Ocean Basin
(NISCAIR, New Delhi, 1993)Four sediment cores from the Central Indian Ocean Basin (CIOB) were studied to characterise the coarse fraction (less than 63 mu), transition metal and major oxide contents. Transition metals (Mn, Cu, Ni, Zn) show enrichment ... -
Metal concentration in some seaweeds of Goa (India)
(Walter de Gruyter, Berlin, 1978)Seventeen species of marine algae collected from five localities of Goa, were analysed for Co, Cu, Fe, Mn, Ni, Pb and Zn, using atomic absorption spectrophotometer. All the seven metals showed considerable variations in ... -
Opportunities for offshore mineral exploration in the Indian Ocean
(International Society of Offshore and Polar Engineers, Cupertino, CA (USA), 1999)The Indian Ocean offers several opportunities for offshore mineral resources in the nearshore and coastal areas, the EEZs of different countries as well as the deep sea regions. The coastal and nearshore resources of heavy ... -
Petroleum hydrocarbons and trace metals in Visakhapatnam harbour and Kakinada Bay, east coast of India
(NISCAIR, CSIR, 1996)High concentrations of PHC were observed in the inner channels (viz. South lighter canal, Northern arm, North Western arm and Western arm) of Visakhapatnam Harbour, Andhra Pradesh, India. The estimation of trace metals ... -
Polymetallic nodule resources of the Indian Ocean
(Offsetters, New Delhi, 1993)The seabed resources are large and varied and considerable knowledge and technological development are required to exploit them economically. Beyond the Exclusive Economic Zone (EEZ), the deposits which are of utmost ... -
Ultrafiltration technique in conjunction with competing ligand exchange method for Ni–humics speciation in aquatic environment
(Elsevier, 2013)The combination of ultrafiltration technique with competing ligand exchange method provides a better understanding of interactions between Ni and different molecular weight fractions of humic acid (HA) at varying pH in ...