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  • 1995-1999  (37)
Collection
Keywords
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Years
Year
  • 1
    Series available for loan
    Series available for loan
    Bilans hydriques de lacs (Kivu, Tanganiyika, Rukwa et Nyassa) du rift est-african (1998)
    Tervuren : Koninklijk Museum voor Midden-Afrika
    Associated volumes
    Details Availability
    Call number: S 98.0420(103)
    In: Annalen
    Type of Medium: Series available for loan
    Pages: XVI, 183 S. , graph. Darst., Kt.
    Series Statement: Annalen / Koninklijk Museum voor Midden-Afrika : Geologische wetenschappen 103
    Location: Lower compact magazine
    Branch Library: GFZ Library
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  • 2
    Series available for loan
    Series available for loan
    Spectrométrie à haute résolution "in situ" et analyse d'images LANDSAT et SPOT au Burundi (1998)
    Tervuren : Museum
    Associated volumes
    Details Availability
    Call number: S 91.1183(98)
    In: Annalen
    Type of Medium: Series available for loan
    Pages: IX, 155 S. , Ill., graph. Darst., Kt.
    Series Statement: Annalen / Koninklijk Museum voor Midden-Afrika : Reeks in 8°, Geologische wetenschappen 98
    Location: Lower compact magazine
    Branch Library: GFZ Library
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  • 3
    Monograph available for loan
    Monograph available for loan
    Competition and liberalization in european gas markets : a diversity of models (1998)
    London : The Royal Institute of International Affairs
    Associated volumes
    Details Availability
    Call number: PIK N 075-98-0236
    In: Energy and Environmental Programme
    Type of Medium: Monograph available for loan
    Pages: 232 p.
    ISBN: 1862030170
    Series Statement: Energy and Environmental Programme
    Location: A 18 - must be ordered
    Branch Library: PIK Library
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  • 4
    Monograph available for loan
    Monograph available for loan
    The emerging international regime for climate change : structures and options after berlin ; report of a workshop held at the royal institute of international affairs, june, 1995 (1995)
    London : The Royal Institute of International Affairs
    Associated volumes
    Details Availability
    Call number: PIK N 075-95-0351
    In: Energy and Environmental Programme
    Type of Medium: Monograph available for loan
    Pages: 96 p.
    ISBN: 1899658076
    Series Statement: Energy and Environmental Programme
    Location: A 18 - must be ordered
    Branch Library: PIK Library
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  • 5
    Electronic Resource
    Electronic Resource
    In ascaris sperm pseudopods, msp fibers move proximally at a constant rate regardless of the forward rate of cellular translocation (1995)
    New York, NY : Wiley-Blackwell
    Cell Motility and the Cytoskeleton 31 (1995), S. 241-253 
    Details
    ISSN: 0886-1544
    Keywords: Ascaris sperm ; motility ; computer-assisted motion analysis ; Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: Computer-assisted methods have been employed to obtain a high resolution description of pseudopod expansion, cellular translocation, and the subcellular dynamics of MSP fiber complexes in the motile sperm of the nematode Ascaris suum. Although Ascaris sperm translocating in a straight line or along a curved path do not retract their pseudopod or significantly alter pseudopod shape, they move in a cyclic fashion, with an average period between velocity peaks of 0.35 × 0.05 min, which is independent of the forward velocity of sperm translocation. Expansion is confined to a central zone at the distal edge of the pseudopod for sperm translocating in a straight line and to a left-handed or right-handed lateral zone in the direction of turning, for sperm translocating along a curved path. For cells translocating in a straight line, the branch points and kinks of MSP fiber complexes move in a retrograde direction in relation to the substratum at an average velocity of 11 μm per min which is independent of the forward velocity of sperm translocation. The distal (anterior) end of a fiber complex, however, moves distally at the speed of sperm translocation when it emanates from the expansion zone, but when it is displaced to a nonexpanding surface of the pseudopod, it stops moving distally. When a cell is anchored to the substratum and is, therefore, nonmotile, the velocity of fiber complexes moving in a retrograde direction doubles. The unique aspects of pseudopod and MSP fiber complex dynamics in Ascaris are compared to the dynamics of pseudopod formation and actin filament dynamics in traditional actin-based amoeboid cells, and the treadmill model for MSP polymerization is reassessed in light of the discovery that fiber complex branch points move proximally (posteriorly) at a fixed rate.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cm.970310307
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  • 6
    Electronic Resource
    Electronic Resource
    A T cell-independent antitumor response in mice with bone marrow cells retrovirally transduced with an antibody/Fc-γ chain chimeric receptor gene recognizing a human ovarian cancer antigen (1998)
    [s.l.] : Nature Publishing Group
    Nature medicine 4 (1998), S. 168-172 
    Details
    ISSN: 1546-170X
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Medicine
    Notes: [Auszug] In order to treat common cancers with immunotherapy, chimeric receptors have been developed that combine the tumor specificity of antibodies with T-cell effector functions. Previously, we demonstrated that T cells transduced with a chimeric receptor gene against human ovarian cancer were able to ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/nm0298-168
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  • 7
    Electronic Resource
    Electronic Resource
    Characterisation of substance P-induced endocytosis of NK1 receptors on enteric neurons (1996)
    Springer
    Histochemistry and cell biology 106 (1996), S. 563-571 
    Details
    ISSN: 1432-119X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Immunoreactivity for NK1 receptors is confined to specific nerve cell bodies in the guinea-pig ileum, including inhibitory motor neurons and secretomotor neurons. In the present work, endocytosis of NK1 receptors in these enteric neurons was studied following addition of substance P (SP) to isolated ileum. NK1 receptors were localised with antibodies against the C-terminus of this receptor. Some preparations were incubated with SP tagged with the fluorescent label, Cy3.18, so that the fate of SP bound to receptors could be followed. Preparations were analysed by confocal microcopy. In tissue that was incubated at 4° C in the absence of SP, most NK1 receptor immunoreactivity (IR) was confined to surface membranes of nerve cells. At 37° C in the presence of 10−7 M SP (plus 3×10−7M tetrodotoxin to prevent indirect activation via other neurons) the neuronal NK1 receptor was rapidly internalised. After 5 min, NK1 receptor IR was partially internalised, at 20 min NK1 receptor IR was throughout the cytoplasm and in perinuclear aggregates and at 30 min it was again at the cell surface. SP-induced NK1 receptor endocytosis was inhibited by the specific NK1 receptor antagonist, SR140333. Cy3-SP was colocalised with NK1 receptor IR and was internalised with the NK1 receptor. These results show that enteric neurons exhibit authentic NK1 receptors that are rapidly internalised when exposed to their preferred ligand.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02473271
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  • 8
    Electronic Resource
    Electronic Resource
    Characterisation of substance P-induced endocytosis of NK1 receptors on enteric neurons (1996)
    Springer
    Histochemistry and cell biology 106 (1996), S. 563-571 
    Details
    ISSN: 1432-119X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract  Immunoreactivity for NK1 receptors is confined to specific nerve cell bodies in the guinea-pig ileum, including inhibitory motor neurons and secretomotor neurons. In the present work, endocytosis of NK1 receptors in these enteric neurons was studied following addition of substance P (SP) to isolated ileum. NK1 receptors were localised with antibodies against the C-terminus of this receptor. Some preparations were incubated with SP tagged with the fluorescent label, Cy3.18, so that the fate of SP bound to receptors could be followed. Preparations were analysed by confocal microscopy. In tissue that was incubated at 4° C in the absence of SP, most NK1 receptor immunoreactivity (IR) was confined to surface membranes of nerve cells. At 37° C in the presence of 10−7 M SP (plus 3×10−7M tetrodotoxin to prevent indirect activation via other neurons) the neuronal NK1 receptor was rapidly internalised. After 5 min, NK1 receptor IR was partially internalised, at 20 min NK1 receptor IR was throughout the cytoplasm and in perinuclear aggregates and at 30 min it was again at the cell surface. SP-induced NK1 receptor endocytosis was inhibited by the specific NK1 receptor antagonist, SR140333. Cy3-SP was colocalised with NK1 receptor IR and was internalised with the NK1 receptor. These results show that enteric neurons exhibit authentic NK1 receptors that are rapidly internalised when exposed to their preferred ligand.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004180050077
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  • 9
    Electronic Resource
    Electronic Resource
    Filtration enhances suspended sediment deposition from surface water to granular permeable beds (1997)
    Springer
    Water, air & soil pollution 99 (1997), S. 157-171 
    Details
    ISSN: 1573-2932
    Keywords: suspended sediments ; deposition ; granular substrate ; gravel bed ; filtration ; rivers
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract We present results Irom an experimental study of suspended particle (4.5–36.5 μm silicon carbide powder deposition from surface water to ‘clean’ equi-granular permeable beds in a small 12.5×12.5×15cm box and a re-circulating flume. Enhanced deposition rates of up to 5 times the accepted sediment deposition model (e.g., Einstein,1968 are explained by filtration of particles in the bed. Compared to this model depotiion increases with increasing surface fluid speed, decreasing suspended particle size and increasing bed particle size. These results can be explained by an increased ability of particles to penetrate into the bed with the pore water which increases the effective filter thickness. The predominant deposition mechanism within the bed pores appears to be settling. Enhanced deposition, evident in Einstein's (1968) experimental data, was previously attributed to flocculation but may be explained better by filtration. These enhanced deposition rates drop off to close to the accepted model predicted rate after a certain volume of sediment has entered the bed, which may be due to the stumping of deposits from the top of bed elements. This reduction in deposition rate occurs long before the bed is filled with fine sediment.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02406855
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  • 10
    Electronic Resource
    Electronic Resource
    Movement of villi induces endocytosis of NK1 receptors in myenteric neurons from guinea-pig ileum (1998)
    Springer
    Cell & tissue research 292 (1998), S. 37-45 
    Details
    ISSN: 1432-0878
    Keywords: Key words Enteric nervous system ; Enteric reflexes ; Intestine ; Tachykinins ; Substance P ; Neurotransmitters ; Guinea-pig
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract  Agitation of villi evokes reflexes that affect the motility of the guinea-pig small intestine. NK1 receptor endocytosis was used to investigate the possible involvement of tachykinins acting on neuronal NK1 receptors in these reflexes. Segments of guinea-pig ileum were incubated at 37°C in Krebs physiological saline containing 3×10–6 M nicardipine, with or without agitation of the villi by gas bubbles. Gut segments were fixed after 0–75 min and processed for immunohistochemistry to reveal the NK1 receptors, following which cells were imaged by confocal microscopy. Initially, receptors were located on the surface and in the cytoplasm of myenteric neurons. In gut incubated without movement of the villi, NK1 receptors returned to the cell surface. After 45 and 60 min, NK1 receptors were detected almost exclusively at the cell surface of 83% and 97% (respectively) of nerve cells that were immunoreactive for NK1 receptors and only 12%–13% of the NK1 receptor fluorescence was located in the cytoplasm. Following the return of receptor to the cell surface, agitation of the villi caused a new wave of endocytosis of the NK1 receptors in 70%–80% of the NK1 receptor-immunoreactive neurons. The percentage of the NK1 receptor fluorescence that was in the cytoplasm increased more than 2-fold to 27±2% after 15 min villous agitation. Action potential blockade by tetrodotoxin (3×10–7 M) prevented the internalisation of the NK1 receptor in response to villous agitation. The degree of internalisation caused by bubbling was similar to that caused by 2×10–9 M substance P. These results indicate that, when enteric reflex circuits are activated by villous movement, tachykinins are released and cause endocytosis of the NK1 receptor in a subpopulation of myenteric neurons.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004410051032
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