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
Filter
  • 42.55  (6)
  • Auxin  (6)
  • Immunocytochemistry  (6)
  • Springer  (18)
  • 2005-2009
  • 1985-1989
  • 1980-1984
  • 1975-1979  (18)
  • 1965-1969
  • 1979  (8)
  • 1978  (10)
Collection
Keywords
Publisher
  • Springer  (18)
Years
  • 2005-2009
  • 1985-1989
  • 1980-1984
  • 1975-1979  (18)
  • 1965-1969
Year
  • 1
    Electronic Resource
    Electronic Resource
    Immunocytochemical localisation of prolactin and growth hormone in the ovine pituitary (1978)
    Springer
    Cell & tissue research 194 (1978), S. 327-336 
    Details
    ISSN: 1432-0878
    Keywords: Prolactin ; Growth hormone ; Ovine pituitary ; Immunocytochemistry ; Granule size
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Using the peroxidase-antiperoxidase immunocytochemical staining technique, prolactin and growth hormone cells have been identified and described in the ovine pituitary. The image analysing computer, Quantimet 720, was used to assess accurately the size range of the secretory granules in these cell types. The area size distributions of the prolactin and growth hormone granules are similar. An increased proportion of larger granules was observed in the prolactin cells post-partum. Serial sections stained alternately for prolactin or growth hormone confirmed that the cells contain either prolactin or growth hormone but not both.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00220399
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Quasi-cw laser action in K5Nd(MoO4)4 (1978)
    Springer
    Applied physics 17 (1978), S. 367-370 
    Details
    ISSN: 1432-0630
    Keywords: 42.55 ; 78.55
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract We report on room temperature quasi-cw laser action in K5Nd(MoO4)4 at a wavelength of 1.067 μm. The crystal was pumped with the 5140 Å line of an argon ion laser. Due to thermal effects actual cw lasing was not possible. Chopping the pump light with a low duty cycle of 1∶1000 leads to quasi-cw laser action and stable output power. We have determined the fundamental laser parameters: threshold pump powerA T=15 mW, slope efficiency η=22%, and internal lossesL=2.5%. In order to explain the measured relaxation oscillations, diffusion of the excited 4f-excitons is considered. According to a recently developed theory, a diffusion constant ofD=2×10−6cm2/s explains the observed results.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00886207
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Polarization properties of a single-mode gas laser in transverse magnetic fields (1978)
    Springer
    Applied physics 17 (1978), S. 257-267 
    Details
    ISSN: 1432-0630
    Keywords: 42.55 ; 32.60
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract The effect of transversally applied magnetic fields on the polarization behavior of a single-mode gas laser is theoretically investigated, stressing the importance of the additivity of respective contributions influencing the time evolution of polarization parameters. By adding a new element to the existing theory, namely the contribution of magnetic-field-free regions in the active medium, and by considering the relatively large effects that small cavity anisotropies can cause, several apparent discrepancies between experiments and existing theory are resolved.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00886954
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Instability of laser cw oscillation in the presence of a passive medium (1978)
    Springer
    Applied physics 15 (1978), S. 265-270 
    Details
    ISSN: 1432-0630
    Keywords: 42.55
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract For a homogeneously broadened two-level ring laser model the stability of the cw laser oscillation in the presence of a passive medium is investigated. The passive material is treated similar to the active material, but without an external pumping mechanism. Stable and unstable regions are shown for various parameters. The stability region of the cw solution becomes extremly small for certain parameters.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00896107
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Cw oscillation at 1.05 and 1.32 μm of LiNd(PO3)4 lasers in external resonator and in resonator with directly applied mirrors (1979)
    Springer
    Applied physics 20 (1979), S. 329-334 
    Details
    ISSN: 1432-0630
    Keywords: 42.55
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract The room temperature cw oscillation at 1.05 and 1.32 μm of lithium neodymium tetraphosphate [LiNd(PO3)4, LNP] lasers in an external resonator and, for the first time, also in a Fabry-Perot resonator with directly applied mirrors is reported. The growth and fluorescence properties of the LNP crystals are briefly described. Laser parameters such as threshold pump power, output power, differential efficiency, optical gain, emission cross section and laser modes are both measured and calculated. Laser experiments show the threshold pump power to be lower for 1.05 μm than for 1.32 μm emission because of the smaller emission cross section; the pump power density is lower for the external resonator than for the Fabry-Perot resonator because of its higher mode losses.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00895005
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Multiwatt optically pumped ammonia laser operation in the 12–13 μm (1978)
    Springer
    Applied physics 17 (1978), S. 317-320 
    Details
    ISSN: 1432-0630
    Keywords: 42.55
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract Design and operating caracteristics of high pulse repetition rate NH3 laser producing up to 20 W of average output power are described. The NH3 laser, operating in the 12–13 μm region was optically pumped with a high pulse repetition rate TEA CO2 laser. Dependences of the NH3 laser output on the pump energy, ammonia and buffer gas pressures and pulse repetition rate have been studied. The conversion efficiency of up to 16% has been received.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00886961
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    CW HCN laser gain in a hollow dielectric rectangular cross-section discharge tube (1979)
    Springer
    Applied physics 19 (1979), S. 359-361 
    Details
    ISSN: 1432-0630
    Keywords: 42.55
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract This paper describes a 1 m-long CW HCN discharge laser with a hollow dielectric rectangular discharge tube of 5×20 cm2 cross-section. For optimum working conditions, the characteristics of the amplifying medium have been made constant over the cross-section, by using an additional magnetic field. Then, the unsaturated gain for the 337 μm line is 6.8% m−1. It is shown to be dependent on the smaller dimension of the cross-section rather than on the other dimension. By using the tube as a waveguide, laser output power of 1 Watt might be obtained with a discharge length of 4 m, instead of the 12m-long discharge required to get the same output power from a cylindrical waveguide laser.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00900481
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    Ethylene and adventitious root formation in hypocotyl segments of etiolated mung-bean (Vigna radiata (L.) Wilczek) seedlings (1978)
    Springer
    Planta 138 (1978), S. 193-197 
    Details
    ISSN: 1432-2048
    Keywords: Auxin ; Ethylene ; Root formation ; Vigna
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Rooting responses and ethylene production by hypocotyl cuttings from etiolated mung-bean seedlings treated with the auxins α-naphthaleneacetic acid, γ-(indole-3)-n-butyric acid (IBA) and 2,4,5-trichloro-phenoxypropionic acid were determined. There was no relationship between the abilities of the auxins to induce root formation and their capacities for inducing ethylene production. Studies with mixtures of 3-indoleacetic acid, a poor stimulator of rooting but an effective inducer of ethylene production, and IBA, an effective rooting stimulator but a poor inducer of ethylene production, exposure of cuttings to ethylene or (2-chloroethyl) phosphonic acid (Ethephon), hypobaric storage (150 mb) of treated cuttings, and exposure of auxin-treated cuttings to 7% CO2 also indicated that ethylene is not directly involved in initiation of adventitious roots in this plant material.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00386810
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 9
    Electronic Resource
    Electronic Resource
    Lead toxicity effects on indole-3-ylacetic acid-induced cell elongation (1978)
    Springer
    Planta 144 (1978), S. 79-84 
    Details
    ISSN: 1432-2048
    Keywords: Auxin ; Cell elongation ; Lead ; Triticum
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract In vitro studies of IAA-induced cell elongation in Triticum aestivum have demonstrated that lead causes a large reduction in elongation. Inhibition of elongation can be reduced by increasing the concentration of IAA, or by the addition of calcium. The inhibitory effect appears to be linked with changes in the properties of the cell walls. Experiments are described which show that lead becomes bound strongly to certain chemical substances involved in cell wall architecture.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00385010
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 10
    Electronic Resource
    Electronic Resource
    Determinations of indole-3-acetic acid in xylem sap of Ricinus communis L. using mass fragmentography (1979)
    Springer
    Planta 144 (1979), S. 299-303 
    Details
    ISSN: 1432-2048
    Keywords: Auxin ; Mass fragmentography ; Ricinus ; Xylem sap
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Mass fragmentography employing a deuterated internal standard was used to make quantitative analyses of indole-3-acetic acid in xylem sap collected from Ricinus communis L. When contamination of the sap by microorganisms was reduced by frequent collection, levels of IAA were found to be less than 0.5 ng ml-1. It is therefore proposed that the transpiration stream does not play a significant role in the transport of IAA within the plant.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00388773
    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...