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  • 1
    Electronic Resource
    Electronic Resource
    Comparison of radionuclides levels from the Chernobyl reactor accident and from global fallout (1990)
    Springer
    Journal of radioanalytical and nuclear chemistry 138 (1990), S. 119-125 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract Studies on radioactive fallout from atmospheric nuclear weapons tests have been carried out at this laboratory since the mid-fifties. The data thus generated on the levels and composition of radioactive fallout in India has been published periodically. Consequent to the Chernobyl reactor accident in the USSR in April 1986, similar studies were carried out. A number of fairly active samples were collected from commercial aircraft which had flown over the USSR soon after the accident. Even though the levels of fallout from the Chernobyl reactor accident observed in India were not significant from a health hazard view point, the studies provided detailed information on differences in the composition of fallout from the accident and long term radiation exposures likely to accrue from the Chernobyl fallout as opposed to global fallout from atmospheric nuclear weapons tests. This paper presents the results and their interpretation on the above aspects.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02049354
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  • 2
    Electronic Resource
    Electronic Resource
    The fine structure of the sieve tubes of Salix caprea (L.) and its relation to the electroosmotic theory (1969)
    Springer
    Planta 90 (1969), S. 43-56 
    Details
    ISSN: 1432-2048
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary The sieve plate pores of Salix caprea in preparations fixed in glutaraldehyde are normally found to be occupied by slime fibrils showing periodic banding such as occur in a number of other species. Arguments are put forward to suggest that the occurence of fibrils in this position is natural and not an artefact of preparation. The sieve tubes further possess prominent and persistent nucleoli showing a radiating structure of tubules. The endoplasmic reticulum often occurs in parietal stacks reminiscent of other species. This evidence is discussed in relation to the electroosmotic theory of translocation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00389295
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  • 3
    Electronic Resource
    Electronic Resource
    Enhanced/suppressed interdiffusion of lattice-matched and pseudomorphic III–V heterostructures by controlling Ga vacancies (1991)
    Springer
    Optical and quantum electronics 23 (1991), S. S805 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract Data are presented showing that the interdiffusion of Ga and Al (AlGaAs-GaAs) and of Ga and In (pseudomorphic InGaAs-GaAs) at a heterojunction can be significantly enhanced or suppressed by controlling group III vacancies and interstitials. High resistivity low-temperature GaAs which contains excess As is shown to accelerate the interdiffusion process. The emission wavelength from monolayer-thick quantum wells can remain relatively unchanged even after annealing for 200 h at 850° C.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00624971
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  • 4
    Electronic Resource
    Electronic Resource
    The role of organic matter in soil manganese equilibrium (1968)
    Springer
    Plant and soil 29 (1968), S. 439-448 
    Details
    ISSN: 1573-5036
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Tests were conducted to determine the role of additions of fresh organic matter (ground cotton seed hulls) to an alluvial loam soil of pH 8 on manganese equilibrium. It was shown that organic matter has a reducing potential which, when added to the soil, resulted in a rapid and marked increase in exchangeable manganese. The reduction is enhanced by higher temperatures (21.1vs 37.7°C) and additions of water (field capacityvs air dry) and incubation periods up to 3 days. It is suggested that the shift in the soil manganese equilibrium, induced by such factors as waterlogging or anaerobic conditions, will be more pronounced when soils contain high levels of organic matter. Patterns of the standard deviations of sample exchangeable manganese data within treatments showed that the variance is highest in moist soil, lower concentrations of added organic matter, and at longer durations of incubation. Re-oxidation of manganese occurred at lower levels of added organic matter (2 and 4%) and extended incubation time (5 to 9 days).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01348975
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  • 5
    Electronic Resource
    Electronic Resource
    Wet deposition of cadmium, lead and copper at Deonar (Bombay) and its relationship with rainfall (1985)
    Springer
    Water, air & soil pollution 25 (1985), S. 63-71 
    Details
    ISSN: 1573-2932
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract The concentrations of Cd, Pb, and Cu were measured by Differential Pulse Anodic Stripping Voltammetry for event rainwater samples collected at Deonar (Bombay). A relationship between measured wet deposition of these trace metals and amount of rainfall is calculated. The power law exponent of 0.6 is found suitable to describe the relationship between wet deposition and rainfall amount of monsoonal rain.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00159625
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  • 6
    Electronic Resource
    Electronic Resource
    Simultaneous multielement determination of chewing and snuff tobaccos used in India by INAA (1986)
    Springer
    Journal of radioanalytical and nuclear chemistry 98 (1986), S. 297-301 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract Trace elements present in Indian cigarette tobacco and cigarette smoke have been reported earlier. This paper presents trace element concentrations in chewing and snuff tobaccos determined by Instrumental Neutron Activation Analysis. The levels of Br, Co, Cr, Fe, Mn, Zn, etc., present in different brands of chewing and snuff tobaccos are compared in two types of tobacco as well as with similar data from other countries.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02037092
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  • 7
    Electronic Resource
    Electronic Resource
    Determination of some toxic trace elements in Indian tobacco and its smoke (1992)
    Springer
    Journal of radioanalytical and nuclear chemistry 163 (1992), S. 349-353 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract Toxic trace metals like mercury, arsenic and cadmium have been determined in widely used Indian chewing tobacco and cigarette tobacco by neutron activation followed by sequential radiochemical separation (RNAA). Differential Pulse Anodic Stripping Voltammetry (DPASV) has been used for the estimation of lead, cadmium and copper in cigarette tobacco and its smoke aerosols. The reliability of the data has been assured by analyzing standard reference materials, bovine liver (NBS-1577) and orchard leaves (NBS-1571), and intercomparison of the Pb, Cd and Cu values by three techniques, namely, RNAA, DPASV and Energy Dispersive X-ray Flourescence technique (EDXRF). The levels of Hg, Cd, As, Pb and Cu in cigarette and chewing tobacco and the estimated intake of Cd, Cu and Pb to the smoker are presented and discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02034808
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  • 8
    Electronic Resource
    Electronic Resource
    Trace elements in tobacco and tobacco smoke by X-ray fluorescence technique (1986)
    Springer
    Journal of radioanalytical and nuclear chemistry 102 (1986), S. 27-35 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract Trace elements in tobacco and tobacco smoke of a large number of commonly available brands of cigarettes were analyzed by energy dispersive X-ray fluorescence. This work supplements the data on same samples gathered by INAA and reported earlier. Data on some toxic elements like Pb, Cu and Ni that could not be measured by INAA are presented here. A number of chewing and snuff tobacco samples were also analyzed. The concentrations of Ca, K, Cl, Br, Cu, Fe, Ni, Pb, Rb, Sr, Ti and Zn in all these samples are presented and their relative hazards are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02037947
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  • 9
    Electronic Resource
    Electronic Resource
    Measurement of High Energy Gross Beta and 40K by Cerenkov Counting in Liquid Scintillation Analyser (2000)
    Springer
    Journal of radioanalytical and nuclear chemistry 243 (2000), S. 651-655 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract The Environmental Survey Laboratory is responsible for the monitoring of radioactivity due to natural and artificially produced radionuclides in a variety of samples available around the nuclear facilities at Tarapur. Standard methods of radiochemical separation and counting are followed to determine β-emitters in various matrices. To make the measurement simple and detect lower levels of contamination in some of the matrices, a method was developed to measure the high energy gross β-activity primarily due to 90Y in borehole water and urine samples of occupational workers by Cerenkov counting in a liquid scintillation analyser. Cerenkov counting results of borehole samples were compared with the total gross β-activity measured by a low background beta-counter. The combined measurements were used to evaluate 90Sr and 137Cs levels without chemical separation or gamma-spectrometry. Cerenkov counting technique was also utilised to evaluate 40K in drinking water and intercomparison water samples. The paper presents the methodology and results of a few measurements using the technique.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1010657917013
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  • 10
    Electronic Resource
    Electronic Resource
    Determination of trace elements in total particulate matter of cigarette smoke by instrumental neutron activation analysis (1985)
    Springer
    Journal of radioanalytical and nuclear chemistry 89 (1985), S. 545-552 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract Trace elements play an important role in the metabolism of the human body. Some of the trace elements are essential, whereas others are toxic and even carcinogenic. Cigarette smoke contains many of these hazardous trace elements. Tobacco samples have been analyzed by the authors for their trace element contents and the results have been reported earlier. This paper presents results on the trace element content analyzed in cigarette smoke using an automatic smoking machine developed in this laboratory to simulate actual smoking pattern. The trace element levels in the total particulate matter samples of the cigarette smoke collected on filter papers were measured and compared with those of cigarette smoke condensate reported in the literature. Both methods of collection give comparable results.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02040617
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