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  • 1
    Electronic Resource
    Electronic Resource
    X-ray detection of the monoceros supernova remnant (1986)
    Springer
    Astrophysics and space science 119 (1986), S. 249-252 
    Details
    ISSN: 1572-946X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The Monoceros nebula is seen in the optical and in radio as a 3°.5 degree diameter ring. It is believed to be an old supernova remnant. Here is reported the detection of X-rays from the Monoceros nebula, confirming its supernova remnant nature.Einstein imaging proportional counter observations of 0.2 to 5 keV X-rays were analyzed to produce a surface brightness map. Preliminary modeling of the Monoceros supernova remnant yields an age of 50 000 years. A large age is expected for such a large remnant. However, the remnant is found to still be in the adiabatic blast wave stage of evolution.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00648859
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  • 2
    Electronic Resource
    Electronic Resource
    Soft X-ray emission from the high galactic latitude X-ray source MX 2140-60 (1981)
    Springer
    Astrophysics and space science 77 (1981), S. 215-220 
    Details
    ISSN: 1572-946X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Soft X-rays (0.2–1.0 keV) have been detected from the high galactic latitude source MX 2140-60 in a rocket experiment. The measured flux of ∼10−10 erg cm−2 s−1 combined with OSO-7 measurements in 2–40 keV X-rays, are best fit by a power law photon spectrum with spectral index 2.3 and a neutral hydrogen column densityN H=(3–7) 1020 atoms cm−2. The observations support the source identification with the cluster of galaxies SC 2146-594, as suggested by Lugger.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00648769
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  • 3
    Electronic Resource
    Electronic Resource
    Evidence for supernova-induced star formation in the monoceros OB2 association (1979)
    Springer
    Astrophysics and space science 66 (1979), S. 191-199 
    Details
    ISSN: 1572-946X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The Monoceros ring, a circular optical nebulosity ∼3°.5 in diameter and centred at R.A.=6h37m, Dec.=6°30′ (l ii =205°.5,b ii =0°.2) is in good structural agreement with radio observations. A neutral hydrogen shell is also accurately projected on the ring. These observations are consistent with the Monoceros ring being a supernova remnant 90–100 pc in diameter expanding at about 45 km s−1 and having an age of the order of a million years. Bright Hii regions containing early-type stars (e.g., galactic cluster NGC 2244 in the Rosette nebula) and extremely young stars of the OB association Mon OB2 lie at the edges of the ring. The positional and temporal coincidence of the Mon OB2 association with a supernova remnant suggests that probably the star formation in this region is induced or speeded up by the passage of a supernova shock wave through the clumpy interstellar medium.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00648370
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  • 4
    Electronic Resource
    Electronic Resource
    X-ray observation of two gamma-ray source fields with the Einstein Observatory (1982)
    Springer
    Astrophysics and space science 82 (1982), S. 477-479 
    Details
    ISSN: 1572-946X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Two gamma ray source fields CG 189+1 and CG 075+00, centered on the corresponding UHURU Point X-ray source positions, were observed with the IPC onboard Einstein Observatory. An unidentified weak X-ray source is detected from the direction of CG 189+1 only.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00651454
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  • 5
    Electronic Resource
    Electronic Resource
    Effect of fungal metabolites on colonization of fungi on nutrient agar from soil inocula (1971)
    Springer
    Cellular and molecular life sciences 27 (1971), S. 1360-1362 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02136740
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  • 6
    Electronic Resource
    Electronic Resource
    Biological monitoring of chlorinated pesticides among exposed workers of mango orchards: A case study in tropical climate (1992)
    Springer
    Bulletin of environmental contamination and toxicology 48 (1992), S. 295-301 
    Details
    ISSN: 1432-0800
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00194387
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  • 7
    Electronic Resource
    Electronic Resource
    Litterfall, litter decomposition and nutrient release patterns in four native tree species raised on coal mine spoil at Singrauli, India (1999)
    Springer
    Biology and fertility of soils 29 (1999), S. 371-378 
    Details
    ISSN: 1432-0789
    Keywords: Key words Litterfall ; Litter decomposition ; Nutrient immobilization ; Nutrient mineralization ; Mine spoil
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geosciences , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract  Litterfall, leaf litter decomposition and N and P release were studied in four tree species (Dalbergia sissoo, Azadirachta indica, Pongamia pinnata and Shorea robusta) planted on a mine spoil habitat. Annual litterfall varied from 1220 kg ha–1 in the S. robusta stand to 3620 kg ha–1 in the A. indica stand. The fast-growing species A. indica and D. sissoo exhibited higher litter production in comparison to the other two slow-growing species. The total N returned to the soil through litterfall ranged from 8.6 kg ha–1 year–1 in the S. robusta stand to 36.5 kg ha–1 year–1 in the D. sissoo stand. The annual percent leaf litter mass loss was distinctly greater in A. indica (73%) and D. sissoo (69%) in comparison to P. pinatta (59%) and S. robusta (47%). The mean relative decomposition rates of leaf litter material were maximum in the rainy season and minimum in summer. Rainfall and its associated variables exhibited greater control over litter docomposition than temperature. Lignin and water-soluble compounds were better predictors of annual mass loss rates accounting for 90% variability. Mass loss was positively correlated with N and P mineralization rates. Lignin was the best predictor of annual N and P mineralization rates. Nutrient release pattern differed; constant release occurred in A. indica, initial release followed by delayed immobilization and release occurred in D. sissoo and P. pinnata, and initial immobilization followed by gradual release was noticed in S. robusta. A. indica and D. sissoo, showing high litterfall and rapid litter decomposition rate, hold promise for the rehabilitation of nutrient-poor coal mine spoils. On the other hand, S. robusta with less litterfall and a slow decomposition rate may prove disadvantageous.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003740050567
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  • 8
    Electronic Resource
    Electronic Resource
    Effects of farmyard manure and inorganic fertilizer on the dynamics of soil microbial biomass in a tropical dryland agroecosystem (1995)
    Springer
    Biology and fertility of soils 19 (1995), S. 231-238 
    Details
    ISSN: 1432-0789
    Keywords: Farmyard manure ; Fertilizer ; Microbial biomass ; Dryland agroecosystem ; Rice ; Lentil
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geosciences , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Changes in the soil microbial biomass following applications of farmyard manure and inorganic fertilizer, alone and in combination, were studied for two annual cycles in a rice-lentil crop sequence grown under rainfed tropical dryland conditions. During the two annual cycles the microbial biomass C range (μg g-1) was 146–241 (x = 204), 191–301 (245), 244–382 (305), and 294–440 (365) in control, fertilizer, manure and manure+fertilizer plots, respectively. The corresponding ranges for microbial biomass N (μg g-1) were 16.5–21.0 (19.5), 20.4–38.2 (26.0), 23.0–34.6 (27.0) and 26.2–42.4 (33.3), and for microbial biomass P (μg g-1) 4.4–8.2 (7.0) 6.0–11.2 (9.6), 11.2–22.0 (17.0), and 10.0–25.4 (18.3). The maximum increase in the microbial biomass, due to these inputs was observed under the manure+fertilizer treatment followed, in decreasing order, by manure alone and fertilizer alone. Within individual crop periods the levels of microbial biomass decreased sharply from the seedling to the flowering stage and then increased slightly with crop maturity. The maximum levels of microbial biomass C and P were observed during the summer fallow. The maximum accumulation of microbial biomass N occurred in the early rainy season, immediately after the soil amendments. Microbial biomass C, N, and P were positively related to each other throughout the annual cycle.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00336165
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  • 9
    Electronic Resource
    Electronic Resource
    Influence of copper treatment on the immune response in an air-breathing teleost,Saccobranchus fossilis (1988)
    Springer
    Bulletin of environmental contamination and toxicology 41 (1988), S. 222-226 
    Details
    ISSN: 1432-0800
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01705434
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  • 10
    Electronic Resource
    Electronic Resource
    Immunosuppressive effects of aflatoxin in growing rats (1993)
    Springer
    Mycopathologia 124 (1993), S. 189-194 
    Details
    ISSN: 1573-0832
    Keywords: Aflatoxin B1 ; Cellular immunity ; Immunosuppression ; Weanling rats
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract The immunosuppressive potential of aflatoxin B1 (AFB1), the carcinogenic metabolite ofAspergillus flavus, was evaluated in growing rats. The weanling rats were subchronically exposed to 60, 300 and 600 µg AFB1/kg body weight for four weeks on alternate days by oral feeding. Various parameters of cell mediated immunity (CMI) and humoral immunity were assessed in control and treated animals. CMI was evaluated by measuring delayed type of hypersensitivity (DTH) response and humoral by plaque forming cell (PFC) assay. The lymphoproliferative response assay for T- and B-cells was also performed. It was observed that AFB1 selectively suppressed cell mediated immunity in growing rats. AFB1 suppressed CMI at the 300 and 600 µg dose levels only as measured by DTH response assay. It is concluded that continuous low level exposure of aflatoxin to growing host may enhance its susceptibility to infection and tumorigenesis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01103737
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