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
    Determination of biologically available phosphorus using a radiobioassay technique (1985)
    Oxford, UK : Blackwell Publishing Ltd
    Freshwater biology 15 (1985), S. 0 
    Details
    ISSN: 1365-2427
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: SUMMARY. 〈list xml:id="l1" style="custom"〉1A kinetic approach in which the uptake rate of simultaneous additions of orthophosphate and carrier-free phosphorus- 32 by a standard culture of the green alga Selenastrum capricornutum under near neutral conditions was used to obtain an estimate of the readily available components of the total phosphorus pool in natural freshwater samples.2A comparison was made between the values of the biologically available phosphorus obtained using this radiobioassay technique and those obtained by the soluble reactive phosphorus procedure for thirty-one freshwater samples. Only about three-quarters of the phosphorus measured as soluble reactive phosphorus was readily available to algae. The results agreed with those obtained in an earlier study in which an enzymatic procedure was used to determine orthophosphate.3The results of tests carried out on the water samples used in this study were consistent with the conclusion that the presence of a hydrous ferric oxide-orthophosphale complex in the samples caused the soluble reactive phosphorus value to be greater than the corresponding biologically available phosphorus value.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2427.1985.tb00230.x
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Solar physics at Oxford (1981)
    [s.l.] : Nature Publishing Group
    Nature 292 (1981), S. 194-195 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE growing importance of solar physics within astronomy was illustrated by a recent meeting* at Oxford which took as its theme 'Solar Activity'. Topics ranged from the underlying causes of solar activity in the interaction between the sub-photospheric convection zone and magnetic fields to the ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/292194a0
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Multiwavelength analysis of a well observed flare from SMM (1985)
    Springer
    Solar physics 99 (1985), S. 167-188 
    Details
    ISSN: 1573-093X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We describe and analyse observations of an M1.4 flare which began at 17: 00 UT on 12 November, 1980. Ground based Hα and magnetogram data have been combined with EUV, soft and hard X-ray observations made with instruments on-board the Solar Maximum Mission (SMM) satellite. The preflare phase was marked by a gradual brightening of the flare site in Ov and the disappearance of an Hα filament. Filament ejecta were seen in Ov moving southward at a speed of about 60 km s−1, before the impulsive phase. The flare loop footpoints brightened in Hα and the Caxix resonance line broadened dramatically 2 min before the impulsive phase. Non-thermal hard X-ray emission was detected from the loop footpoints during the impulsive phase while during the same period blue-shifts corresponding to upflows of 200–250 km s−1 were seen in Ca xix. Evidence was found for energy deposition in both the chromosphere and corona at a number of stages during the flare. We consider two widely studied mechanisms for the production of the high temperature soft X-ray flare plasma in the corona, i.e. chromospheric evaporation, and a model in which the heating and transfer of material occurs between flux tubes during reconnection.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00157307
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Comparison of observed Ca xix and Ca xviii relative line intensities with current theory (1982)
    Springer
    Solar physics 78 (1982), S. 125-135 
    Details
    ISSN: 1573-093X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A comparison is made between Ca xix and Ca xviii line ratios observed in solar flares with the Bent Crystal Spectrometer (BCS) on the Solar Maximum Mission (SMM) satellite and currently available atomic data. Close agreement is found with the excitation rates recently published by Pradhan et al. (1981). The observations show little dependence of line ratios on electron temperature, supporting a further conclusion that cascade contributions to the 23 P and 23 S levels are not significant.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00151148
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Electron densities in active galaxies (1983)
    [s.l.] : Nature Publishing Group
    Nature 306 (1983), S. 503-503 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] IT is alarming to find a common fallacy concerning the measurement of electron densities in astrophysical conditions appearing twice in the same issue of Nature. Both Fairall1 and Gaskell2, argue that the mere appearance ofthe forbidden lines of O III in a Seyfert galaxy can place an upper limit ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/306503a0
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Identification of [Fe III ] in the solar ultraviolet spectrum (1986)
    [s.l.] : Nature Publishing Group
    Nature 324 (1986), S. 444-446 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The wavelengths of the emission lines are given in Table 1. Three groups of lines occur, the strongest between 1,575 and 1,598 A, the others between 1,503 and 1,518 A and between 1,431 and 1,452 A. The wavelengths were determined on a scale established from nearby lines of neutral atoms. For the ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/324444a0
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    A new window on the Universe (1989)
    [s.l.] : Nature Publishing Group
    Nature 338 (1989), S. 378-379 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THERE are few spectral ranges in which observations of astrophysical sources have not been made. One of the few is the extreme ultraviolet region, which is virtually unexplored owing to earlier assumptions that the interstellar medium would be opaque at wavelengths between the hydrogen Lyman ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/338378a0
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    H 2 emission in the EUV spectrum of T Tauri and Burnham's nebula (1981)
    [s.l.] : Nature Publishing Group
    Nature 290 (1981), S. 34-36 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] T Tau is a pre-main-sequence star, with a photospheric absorption spectrum consistent with a spectral type of KO or K1 according to Kuhi3. It is embedded in nebulosity, from which characteristic low-excitation lines are observed in the visible region of the spectrum4. Emission from the v" = 1-0S(l) ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/290034a0
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 9
    Electronic Resource
    Electronic Resource
    Karyotypic study of titi monkeys,Callicebus moloch brunneus (1989)
    Springer
    Primates 30 (1989), S. 81-88 
    Details
    ISSN: 0032-8332
    Keywords: Callicebus moloch brunneus ; New World monkey ; Karyotype ; Comparative cytogenetics ; Differentiation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract A karyotypic study on a subspecies of the dusky titi,Callicebus moloch brunneus, was carried out and a third karyotype ofC. moloch was discovered. The chromosome number of this subspecies is 48. The autosomes consist of 5 subtelocentric, 5 submeta- or metacentric, and 13 acrocentric chromosome pairs. The X chromosome and the Y chromosome are submetacentric and metacentric, respectively. A comparative study with other subspecies of theC. moloch group (i.e.,C. m. cupreus andC. m. ornatus with 2n=46 andC. m. donacophilus with 2n=50) suggests that the karyotype ofbrunneus occupies a position intermediate between the two other karyotypes ofC. moloch, but nearer to that of 2n=50. The presumed total differences betweenbrunneus andcupreus comprise one Robertsonian rearrangement, one centromeric transposition and four pericentric inversions, and those betweenbrunneus anddonacophilus involve one translocation or breakage (possibly corresponding to two events, that is, one Robertsonian rearrangement and one centromeric transposition).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02381213
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 10
    Electronic Resource
    Electronic Resource
    Report of the work group on Latin American forests (1982)
    Springer
    Plant and soil 67 (1982), S. 415-420 
    Details
    ISSN: 1573-5036
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02182791
    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...