ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    MEM Analysis of Geomagnetic Field Variations Over Narssarssuaq (1997)
    Springer
    Pure and applied geophysics 150 (1997), S. 329-340 
    Details
    ISSN: 1420-9136
    Keywords: Key words: Maximum entropy spectral analysis, high latitude indices, MILDCAAs, horizontal (H) component, vertical (Z) component.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract —Maximum entropy spectral analysis (MESA) has been applied to 24 series of hourly daily data and only one daily mean series for the horizontal (H) and vertical (Z) components of the geomagnetic field for the year 1983 as observed at Narssarssuaq, Greenland (71.2°N, 36.7°E) (gm coordinate). The method has isolated some prominent medium frequency signal components. The maximum peaks for H are at 06 hr (0.174 cycles per day (cpd), 3.2 × 104 db) and 08 hr (0.09 cpd, 3.5 × 104 db). Similarly, the maximum peak in Z is observed at 04 hr (0.114 cpd, 5.7 × 104 db). The spectral results for the daily-mean data indicate periods are greater than two days, with 178.5 days (nearly semiannual) being common to both H and Z. Other harmonics have been found for all the series of H and Z components which are mainly caused by the "Effective Period", i.e., the period produced by the combined effect of the sunspot numbers and the sun’s rotation period. Such frequencies correspond very well with those found in the geomagnetic indices A p  , C p and AE. This suggests that the disturbance transient variations are caused by viscous interaction of the solar energies emanating from sunspot regions with the outermost magnetospheric boundary which, in turn, influences the magnetosphere-iono sphere coupling and produces the medium intensity long-duration continuous auroral activities (MILD CAAs) over high latitude regions. Thus, the higher latitude geomagnetic activities are nothing but the "effective period driven MILDCAAs" having a recurrence tendency of 27/n, where n is an integer.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s000240050079
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    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
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Heavy metals in freshly deposited sediments of the Gomati River (a tributary of the Ganga River): effects of human activities (1997)
    Springer
    Environmental geology 29 (1997), S. 246-252 
    Details
    ISSN: 1432-0495
    Keywords: Key words Heavy metals ; Sediment India
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract  The concentrations of various metals (Cr, Cu, Co, Fe, Mn, Ni, Pb, Zn, and Cd) were determined in recently deposited surface sediments of the Gomati River in the Lucknow urban area. Markedly elevated concentrations (milligrams per kilogram) of some of the metals, Cd (0.26–3.62), Cu (33–147), Ni (45–86), Pb (25–77), and Zn (90–389) were observed. Profiles of these metals across the Lucknow urban stretch show a progressive downstream increase due to additions from 4 major drainage networks discharging the urban effluents into the river. The degree of metal contamination is compared with the local background and global standards. The geoaccumulation index order for the river sediments is Cd〉Zn〉Cu〉Cr〉Pb. Significant correlations were observed between Cr and Zn, Cr and Cu, Cu and Zn and total sediment carbon with Cr and Zn. This study reveals that the urbanization process is associated with higher concentrations of heavy metals such as Cd, Cu, Cr, Pb, and Zn in the Gomati River sediments. To keep the river clean for the future, it is strongly recommended that urban effluents should not be overlooked before their discharge into the river.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002540050123
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Water chemistry and control of weathering of Pichola Lake, Udaipur District, Rajasthan, India (1996)
    Springer
    Environmental geology 27 (1996), S. 184-190 
    Details
    ISSN: 1432-0495
    Keywords: Key words: Silicate weathering ; Anthropogenic activity ; Domestic sewage ; Semiarid conditions
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract The water chemistry of Pichola lake revealed that it is dominated by Na and HCO3. The lake water chemistry strongly reflects the dominance of continental weathering aided by anthropogenic activity, such as tourist influx, developmental activities in the catchment area, and disposal of untreated municipal and domestic sewage into the lake basin. The supply of major ions is mainly through weathering of the silicate rock exposed in the drainage basin and the contribution from saline and alkaline soils/groundwater because of the semiarid conditions of the region. The increase in phosphate loading and consequent depletion of silica suggests biological consumption of the latter. The observed chemical data of Pichola lake was used to predict the mineral assemblages in the carbonate and aluminosilicate system. It demonstrates that calcite and dolomite are the possible minerals that are in equilibrium with the lake water system and that the lake water chemistry is in the range of stability of kaolinite.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002540050050
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Water chemistry and control of weathering of Pichola Lake, Udaipur District, Rajasthan, India (1996)
    Springer
    Environmental geology 27 (1996), S. 184-190 
    Details
    ISSN: 1432-0495
    Keywords: Silicate weathering ; Anthropogenic activity ; Domestic sewage ; Semiarid conditions
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract The water chemistry of Pichola lake revealed that it is dominated by Na and HCO3. The lake water chemistry strongly reflects the dominance of continental weathering aided by anthropogenic activity, such as tourist influx, developmental activities in the catchment area, and disposal of untreated municipal and domestic sewage into the lake basin. The supply of major ions is mainly through weathering of the silicate rock exposed in the drainage basin and the contribution from saline and alkaline soils/groundwater because of the semiarid conditions of the region. The increase in phosphate loading and consequent depletion of silica suggests biological consumption of the latter. The observed chemical data of Pichola lake was used to predict the mineral assemblages in the carbonate and aluminosilicate system. It demonstrates that calcite and dolomite are the possible minerals that are in equilibrium with the lake water system and that the lake water chemistry is in the range of stability of kaolinite.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00770431
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    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
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    The effects of MNG and NMU on mitotic activities and DNA synthesis (1970)
    Springer
    Cellular and molecular life sciences 26 (1970), S. 645-646 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Zusammenfassung Mit Nitrosemethylurethan und Nitroseguanidin behandelte keimende Gerstensamen zeigten eine auffallend geringere Mitoseaktivität, chromosomale Abweichungen, nichtverzögerte Effekte und Abnahme der DNA-Synthese. Die chromosomale Schädigung scheint von der DNS-Synthese unabhängig zu sein.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01898739
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    A new neurosecretory system in fish, located in the gill region (1981)
    Springer
    Cellular and molecular life sciences 37 (1981), S. 850-851 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary A peculiar neurosecretory system is reported in 6 teleost species;Clarias batrachus, Heteropneustes fossilis, Mystus seenghala, Ompak pabda, Glassogobius giuris andNotopterus notopterus. It is located in the gill region close to the pseudobranch or to the carotid labyrinth. The neurosecretory cells have been identified using stains specific for neurosecretion. The results are discussed in the light of the association of the neurosecretory system with the pseudobranch or the carotid labyrinth, and the airbreathing habit of these fishes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01985675
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 9
    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
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 10
    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
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...