Browsing by Title
Now showing items 6637-6656 of 9191
-
Rabbit-core based sea-level logger using semiconductor transducer
(Allied, India, 2003)A sea level logger based on Rabbit-Core micro-controller module has been designed and tested. The transducer used with the logger is a temperature-compensated semiconductor transducer, providing absolute fluid pressure in ... -
Rabin Sen Gupta - A biography
(Elsevier, 1994) -
Radiocarbon dates of the medieval period stone anchors from Dabhol, west coast of India
(Current Science Association, 2009)Dabhol was an important medieval-period port town on the Maharashtra coast. An archaeological exploration at Dabhol has revealed four stone anchors with remains of wood in fluke hole. These anchors were retrieved from ... -
Radiocarbon evidence for reduced deep water ventilation of the northern Indian Ocean during the last glacial maxima and early deglaciation
(Elsevier, 2023)Enhanced outgassing of sequestered carbon to the atmosphere by upwelling of deep water in the Southern Ocean during the last deglaciation is assumed to be the main factor that modulated changes in atmospheric CO2 and ... -
Radiolarian abundance - A monsoon proxy responding to the Earth`s orbital forcing: Inferences on the mid-Brunhes climate shift
(The Society of Earth Scientists, 2009)Radiolarian fluxes from the sediment traps moored in the southern Bay of Bengal suggested that radiolarians were invariably higher at times of higher sea surface temperature (SST greater than or equal to 28 degrees C) and ... -
Radiolarian abundance and geochemistry of the surface-sediments from the Central Indian Basin: Inferences to Antarctic bottom water current
(Current Science Association, 1994)The distribution trend of numbers of radiolarian shells/gram dry sediment, biogenic silica, organic carbon, and the carbon/nitrogen ratios in the surface sediments of the Central Indian Basin is similar. Ratios of two ... -
Radiolarian fluxes from the southern Bay of Bengal: sediment trap results
(Pergamon, 2002)A study of radiolarian fluxes collected during 1991-93 from time-series sediment traps deployed at 1071 and 3010 m water depth in the southern Bay of Bengal (SBBT) yielded 40 species/groups of radiolarians. Among the order ... -
Radiolarian monsoonal index Pyloniid group responds to astronomical forcing in the last approx. 500,000 y ears: Evidence from the Central Indian Ocean
(Indian Society for Prehistoric and Quaternary Studies, 1999)Pyloniid radiolarians, oceanic micro-zooplanktons (surface water dwelling), are sensitive to monsoon sea surface temperature and salinity, and their variation down a core may provide an insight into the proxy climatic ... -
Radiolarian zonation and volcanic ash layers in two Quaternary sediment cores from the Central Indian Ocean Basin
(Palaeontological Society of India, 1988)Radiolarian abundance in two Quaternary sediment cores, collected from the Central Indian Basin, was studied and Nigrini's (1971) and Goll's (1980) zones are recognised. New radiolarian zones Collosphaera orthoconus, ... -
Radiometric ages of phosphorites from the west coast of India
(Elsevier, 1987)Four algal carbonate nodules with approx 1 mm thick phosphorite coatings were dated, by the 230Th/234U and three of the carbonates by 14C methods. All ages (5.8-13.9 k.y) are in satisfactory agreement indicating that ... -
Radionuclide fluxes in the Arabian Sea: The role of particle composition
(Elsevier, 2005)The influence of the composition of the vertical particle flux on the removal of particle reactive natural radionuclides (sup(230)Th and sup(231)Pa) from the water column to the sediments is investigated. Radionuclide ... -
Radioprotection against DNA damage by an extract of Indian green mussel, Perna viridis (L.)
(Begell House, 2007)This study describes the radioprotective ability of a hydrolysate prepared using an enzymeacid hydrolysis method from the green mussel Perna viridis in terms of its ability to prevent radiation-induced damage in plasmid ... -
RAMA: The Research Moored Array for African-Asian-Australian Monsoon Analysis and Prediction (including supplement)
(American Meteorological Society, 2009)The Indian Ocean is unique among the three tropical ocean basins in that it is blocked at 25 degrees N by the Asian landmass. Seasonal heating and cooling of the land sets the stage for dramatic monsoon wind reversals, ... -
Raman-XPS spectroscopic investigation of heavy mineral sands along Indian coast
(Springer-Nature, 2021)The beach sands of the Indian coast are bestowed with strategic minerals like ilmenite, monazite, rutile, sillimanite, garnet, and zircon. In order to bring out the importance of these heavy minerals, we present detailed ... -
Range-based underwater vehicle localization in the presence of unknown ocean currents: Theory and experiments
(IEEE, 2016)This paper addresses the problem of range-based autonomous underwater vehicle (AUV) localization in the presence of unknown ocean currents. In the setup adopted, the AUV is equipped with an attitude and heading reference ... -
Ranking serials in oceanography: An analysis based on the Indian contributions and their citations
(Elsevier and Akademiai Kiado, Budapest, 1999)An analysis of serials preferred and cited in various communications by the Indian oceanographers during 1963 to 1992 is presented. A shift in preference of serials from general sciences to oceanography (interdisciplinary) ... -
Rapid climatic shifts and its influence on ancient civilisations: Evidence from marine records
(Universities Press, Hyderabad, India, 1998)The southwest (SW) monsoon system in the Arabian Sea exerts a strong influence upon the climatic conditions in South and Southeast Asia and the associated monsoon rainfall has a great impact on the socio-economic and ... -
Rapid determination of total phenols in seawater by 4-aminoantipyrine colorimetry
(NISCAIR, CSIR, 1996)A rapid and efficient 4-aminoantipyrine (4-AAP) colorimetric method without any cleanup step to determine total phenols in seawater is described. Efficiency of the method for seawater using external addition of phenol ... -
Rapid pulses of uplift, subsidence, and subduction erosion offshore Central America: Implications for building the rock record of convergent margins
(Geological Society of America, 2013)Integrated Ocean Drilling Program (IODP) Expedition 334 to southern Costa Rica, Central America, documented unprecedented subduction erosion in an area of active seismic slip. Widespread subduction erosion of the upper ...