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
    High Rate Thick Film Growth (1977)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Materials Research 7 (1977), S. 239-260 
    Details
    ISSN: 0084-6600
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.ms.07.080177.001323
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Evidence for Non-Allelism between Genes Affecting Human Serum Cholinesterase (1963)
    [s.l.] : Nature Publishing Group
    Nature 200 (1963), S. 1185-1187 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] AN examination of human serum cholinesterase by starch-gel electrophoresis, using sera from many different individuals, revealed that several components with the characteristics of that enzyme were regularly present, though one of these components, referred to as C4, was very much more prominent ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/2001185a0
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Chemical and structural characterization of physical-vapor deposited CuInSe2 for solar cell applications (1990)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 67 (1990), S. 2637-2642 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: This paper reports the results of a comparative study of chalcopyrite-structure CuInSe2 deposited by three techniques, three-source evaporation, reactive sputtering and a hybrid sputtering, and evaporation method. All films exhibit comparable microstructures and microchemistries. Evaporated and hybrid-process films include significant porosity. All layers show dislocations, twins, and stacking faults. No second phases were observed in layers deposited by any of the techniques, independent of film composition. Data supporting this conclusion include average and single-grain energy-dispersive x-ray fluorescence spectroscopy measurements, diffraction studies of the film structure, and transmission electron microscopy images of the films. Finally, grain sizes can be increased by annealing films at temperatures above 400 °C.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.345471
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    A review of some unique aspects of the limnology of shallow Southern African man-made lakes (1987)
    Springer
    GeoJournal 14 (1987), S. 339-352 
    Details
    ISSN: 1572-9893
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geography
    Notes: Abstract Large numbers of man-made lakes occur throughout S Africa. Although primarily designed for specific water supply purposes, most of these lakes fulfill a multipurpose role. The need for such large numbers of reservoirs is related to vagaries in rainfall and runoff; these uncertainties have led to the development of a philosophy of conserving water quantity, which has created some unusual limnological conditions. Examination of the hydrography and limnology of 64 S African impoundments reveals that both basin morphometry and water retention times are affected by natural (drought/flood) and artificial (drawdown) factors which, in turn, affect the hydrodynamics of the lakes, whilst the introduction of treated effluents as a water conservation measure gives rise to a large percentage of enriched lakes having extremely high productivity.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00208207
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Overturn in a hypertrophic, warm, monomictic impoundment (Hartbeespoort Dam, South Africa) (1982)
    Springer
    Hydrobiologia 97 (1982), S. 209-224 
    Details
    ISSN: 1573-5117
    Keywords: hypertrophic impoundment ; overturn ; oxygen ; nitrogen ; primary production ; mixing effects
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract A major decrease in air temperature with an increase in wind stress created thermal instability resulting in overturn. Surface oxygen values decreased from 12.6 (170% saturation) prior to overturn to 0.4 mg · l−1 (5.7%) after overturn. Recovery of surface oxygen concentrations to supersaturation took approximately three months. Changes in the nitrogen balance after overturn indicated that extremely high rates of nitrification occurred. Little change in phosphorus concentration was observed. Surface chlorophyll concentrations decreased from 235 to approximately 2 mg · m−3, resulting in very low primary production values (Amax = 12.4 mg C m−3 h−1). Reduced rates of primary production were maintained for several months after overturn, mainly owing to the low ratio of Zeu/Zm (0.17). No significant changes occurred in the total bacterial population other than a redistribution within the water column. Significant changes occurred in the distribution and density of the zooplankton population. No fish kills were observed although fish populations were oxygen-stressed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00007109
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Applicability of phosphorus budget models to southern African man-made lakes (1982)
    Springer
    Hydrobiologia 89 (1982), S. 237-245 
    Details
    ISSN: 1573-5117
    Keywords: phosphorus budget ; predictive models ; African lakes ; man-made lakes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract An investigation of the phosphorus loading characteristics of 31 southern African man-made was lakes made. The lakes were characterized by low water retention times, with most of the lakes having retention times of less than one year. Catchment phosphorus export rates showed wide variation (1–162 mg P m-2 y-1) with those lakes experiencing excessive municipal wastewater inputs having export rates in excess of 53 mg m-2 y-1. The phosphorus data were tested against the Vollenweider (1976) and Dillon & Rigler (1974) phosphorus budget models which predict in-lake steady state concentrations of phosphorus. It was found that both models displayed good potential for the prediction of steady state concentrations of phosphorus, with better results being obtained from the Dillon & Rigler (1974) model. However, because phosphorus concentrations within these lakes may not necessarily be related to trophic status the use of these models as a predictive tool for eutrophication control still requires further development.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00005710
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    Structured discharges in high frequency plasmas (1973)
    Springer
    Czechoslovak journal of physics 23 (1973), S. 431-435 
    Details
    ISSN: 1572-9486
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Experiments are described in which structured discharges, including stationary and moving striations, were observed in 4 MHz rf plasmas generated using two solenoidal coil configurations. The structured plasmas which formed in the vicinity of the solenoidal coils were not quenched when elaborate precautions were taken to shield the capacitive electric fields. Measurements of the rf power input to the plasma and the resistance reflected by the plasma into the drive circuit showed no discontinuous change during the formation or disappearance of the structured discharges surrounding the solenoidal coils. Observations of striated rf discharges reported by other investigators are reviewed. Arguments are given to support the conclusion that the striation-like structures observed in rf plasmas and the moving striations observed in dc plasmas are part of the same general family.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01594013
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    Aspects of the phosphorus cycle in Hartbeespoort Dam (South Africa) (1989)
    Springer
    Hydrobiologia 183 (1989), S. 87-95 
    Details
    ISSN: 1573-5117
    Keywords: phosphorus ; Hartbeespoort Dam ; algal uptake ; abiotic effects ; kinetics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The role of biotic processes in a warm, monomictic, hypertrophic African impoundment (Hartbeespoort Dam) is examined using 32P radiobioassays. Phosphorus demand is assessed by phosphorus turnover times, alkaline phosphatase activity, cellular phosphorus status and the phosphorus deficiency index. Long turnover times indicative of an enriched system were recorded, ranging from 9 h to 1992 h, with no evidence of phosphorus stress being present. These turnover times support the hypothesis that the phosphorus cycle in Hartbeespoort Dam is dominated by the algal community which is shown to play an important role in phosphorus cycling within the water column. However, hydrological processes remain the driving force in phosphorus seasonality in the lake.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00018714
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 9
    Electronic Resource
    Electronic Resource
    Aspects of the phosphorus cycle in Hartbeespoort Dam (South Africa) Phosphorus loading and seasonal distribution of phosphorus in the reservoir (1989)
    Springer
    Hydrobiologia 183 (1989), S. 73-85 
    Details
    ISSN: 1573-5117
    Keywords: phosphorus ; Hartbeespoort Dam ; loading rates ; seasonality ; water quality
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Hartbeespoort Dam, a hypertrophic, warm monomictic impoundment in South Africa, receives extremely high phosphorus loads (14.6–25.9 g m−2 a−1) that are dominated by point source discharges from municipal wastewater treatment works. The reduced state of the phosphorus discharged from the works has led to the dominance of the dissolved phosphorus pool by low molecular weight orthophosphates which are analytically detectable as soluble reactive phosphorus (SRP; 60% of total phosphorus pool). Seasonality in the in-lake total phosphorus pool is regulated by a combination of abiotic and hydrological processes; biotic processes appear to play a minor role. Mass balance calculations indicate that between 62 and 77% of the annual total phosphorus inflow load is retained within the impoundment each year.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00005972
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 10
    Electronic Resource
    Electronic Resource
    A new look at the old problem of eutrophication management in southern Africa (1989)
    Springer
    The environmentalist 9 (1989), S. 121-129 
    Details
    ISSN: 1573-2991
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Summary This paper contrasts the traditional engineering approach to eutrophication management with a proposed systems approach. Legislative, social, economic and technical aspects of eutrophication are identified. Through the use of some recent case studies, the importance of the socioeconomic factors relative to the legal-technical aspects of eutrophication management is highlighted. Whilst the latter retain their vital role in eutrophication control programmes, this paper suggests that the former cannot be ignored, and recommends adoption of a systems approach to the management of eutrophication.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02241884
    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...