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  • Anthropogenic  (2)
  • Earthworms  (2)
  • Human body  (2)
  • Springer  (6)
  • 1
    Electronic Resource
    Electronic Resource
    Growth and reproduction of the vermicomposting earthwormPerionyx excavatus as influenced by food materials (1997)
    Springer
    Biology and fertility of soils 24 (1997), S. 129-132 
    Details
    ISSN: 1432-0789
    Keywords: Perionyx excavatus ; Earthworms ; Feeding activity ; Plant residues ; Mineralization ; Maturity parameters ; Vermicomposting ; C/N ratio ; Straw
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geosciences , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract An outdoor study was undertaken using polyethylene containers to assess the suitability of different organic residues, soybean straw (Glycine max L. Merril.), wheat straw (Triticum aestivum L.), maize stover (Zea mays L.), chickpea straw (citer arietinum L.) and city garbage, as food for the tropical epigeic earthwormPerionyx excavatus, and to assess the influence of this earthworm on the decomposition of these materials. Maize stover was found to be the most suitable of the food materials used. Population growth ofP. excavatus was enhanced by addition of these organic materials in the temperature range 24°-30°C, while the population was adversely affected above 30°C in a vermiculture system. Addition of earthworms accelerated the breakdown of residues, which ultimately resulted in a lowering of the C:N ratio, water-soluble carbon and carbohydrates, and increased ash percentage and cation exchange capacity compared with their respective controls.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01420233
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  • 2
    Electronic Resource
    Electronic Resource
    Growth and reproduction of the vermicomposting earthworm Perionyx excavatus as influenced by food materials (1996)
    Springer
    Biology and fertility of soils 24 (1996), S. 129-132 
    Details
    ISSN: 1432-0789
    Keywords: Key wordsPerionyx excavatus ; Earthworms ; Feeding activity ; Plant residues ; Mineralization ; Maturity parameters ; Vermicomposting ; C/N ratio ; Straw
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geosciences , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract An outdoor study was undertaken using polyethylene containers to assess the suitability of different organic residues, soybean straw (Glycine max L. Merril.), wheat straw (Triticum aestivum L.), maize stover (Zea mays L.), chickpea straw (cicer arietinum L.) and city garbage, as food for the tropical epigeic earthworm Perionyx excavatus, and to assess the influence of this earthworm on the decomposition of these materials. Maize stover was found to be the most suitable of the food materials used. Population growth of P. excavatus was enhanced by addition of these organic materials in the temperature range 24°–30°C, while the population was adversely affected above 30°C in a vermiculture system. Addition of earthworms accelerated the breakdown of residues, which ultimately resulted in a lowering of the C:N ratio, water-soluble carbon and carbohydrates, and increased ash percentage and cation exchange capacity compared with their respective controls.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01420233
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  • 3
    Electronic Resource
    Electronic Resource
    Sediment accumulation rate in the lakes of Kumaun Himalaya, India using210Pb and226Ra (1994)
    Springer
    Environmental geology 23 (1994), S. 114-118 
    Details
    ISSN: 1432-0495
    Keywords: Sediment accumulation rate ; Lead-210 ; Radon-226 ; Nainital region ; Anthropogenic ; Kumaun Himalaya
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract The rate of sedimentation and the source of sediments in the lake basins of Nainital region, Kumaun Himalaya, have been estimated employing210Pb and210Ra methods. This has yielded a rate of sedimentation of 11.5, 4.70, 3.72, and 3.00 mm/yr in Nainital, Bhimtal, Naukuchiyatal, and Sattal lakes, respectively. The higher rate of sedimentation in Nainital lake, compared to other lakes, is related to faster erosion in the catchment aided by greater anthropogenic activity, while the slowest rate in Sattal lake is due to less erosion and more input of soil-derived material involving a slow rate of accumulation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00766984
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  • 4
    Electronic Resource
    Electronic Resource
    Rate of sediment accumulation in lakes of Udaipur, Rajasthan, India, using the210Pb method (1994)
    Springer
    Environmental geology 24 (1994), S. 28-33 
    Details
    ISSN: 1432-0495
    Keywords: Udaipur ; 210Pb method ; Rate of sedimentation ; Ahar River ; Terrigenous material ; Anthropogenic
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract Sediment accumulation rates have been determined in Udai Sagar, Fateh Sagar and Pichola lakes, which lie in the arid climatic zone, using the210Pb method. The rate of sedimentation estimated in these lakes is 8.9, 3.42, and 2.80 mm/yr, respectively. River inflow, mining activity, and lithology contribute to controling the sediment deposition pattern in Udai Sagar Lake, whereas in Fateh Sagar and Pichola lakes, anthropogenic activity and erosion of loosely bound terrigenous material through wave action and varying lithology are the major contributors. Furthermore, a contribution from atmospheric fallout has not been ruled out due to occurrence of frequent duststorms, owing to strong wind conditions aided by barren hills devoid of vegetation as well as dumping of mining wastes in the area. The higher TDS and lower sedimentation rate in Pichola Lake compared to Fateh Sagar are due to the limestone lithology and better maintenance in the former, such as construction of parks, graveled roads, etc., to check the flow of silt into the lake. Fluctuations in metal content, for example, V, Cr, Co, Ni, Sr, and sedimentation rates are due to the variation in the sediment input at different time intervals.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00768074
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  • 5
    Electronic Resource
    Electronic Resource
    Hydration and tissue solid content of the lean body on prolonged exposure to altitude (1989)
    Springer
    International journal of biometeorology 33 (1989), S. 27-31 
    Details
    ISSN: 1432-1254
    Keywords: Hydration ; Tissue solids ; Human body ; High altitude exposure ; Densitometry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geography , Physics
    Notes: Abstract Using densitometric, hydrometric and anthropometric techniques, body fat, tissue solids, water and mineral content were quantitatively measured on two groups each of 26 young and healthy Indian soldiers of mixed ethnic composition. The experimental group was exposed to 3500 m altitude for 2 years and the experiments were carried out after 48 h and 3 weeks rehabilitation in Delhi (300 m). The control group was never exposed to high altidues. Inspite of the experimental group being fed with superior rations at high altitude, this group showed significantly hyperhydrated lean body with reduced tissue solids in comparison to the control group which was fed with identical rations in Delhi. The calculated mean density of the fat free body had declined to 0.092×103 kg/m3. The 3 week stay at low altitude had little influence on body composition. Hyperhydration, with reduced tissue solids, would cause reduction in the density of fat free body, and would thus interfere with the estimates of total body fat based on densitometric procedures alone. In the hyperhydrated state, Siri's formula overestimated fat by 22.8% of the true value.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01045894
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  • 6
    Electronic Resource
    Electronic Resource
    Determination of safe exposure levels of He/Ne laser light to the human body by means of erythrocyte irradiation studies (1984)
    Springer
    Medical & biological engineering & computing 22 (1984), S. 147-150 
    Details
    ISSN: 1741-0444
    Keywords: Erythrocyte ; Human body ; Laser irradiation ; Reflection ; Safety
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Notes: Abstract He/Ne laser irradiation produces various shape changes and haemolysis in erythrocytes. Under total absorption conditions, after correcting for the reflection from the surface, blood samples were exposed to various intensities of laser light. The upper limit of these intensities, at which the erythrocytes maintain their normal characteristics, has been used to develop safety levels for the various organs of subjects of varying complexions, assuming that even the cells below the skin layer are not damaged by laser exposures. Depending on the complexion these levels show considerable variations for various organs.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02446818
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