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  • 1
    Electronic Resource
    Electronic Resource
    Tolerance of high temperatures by some intertidal barnacles (1969)
    Springer
    Marine biology 4 (1969), S. 326-332 
    Details
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The median lethal times of survival of the barnacles Elminius modestus, Balanus crenatus and B. balanoides, when continuously submerged at high temperatures, were determined for individuals collected in the summer and winter. In E. modestus and B. crenatus there was no seasonal change in high temperature tolerance. In B. balanoides, however, the adults were more susceptible in the winter than in the summer to temperatures a little below the upper lethal temperature. Using less comprehensive data for other British species of barnacles, it is concluded that, in general, the order of tolerance to high temperatures corresponds to the order of temperatures within the geographical and the intertidal distributions of the species. From the time-temperature-survival curves, intertidal barnacles are living closer to environmental temperatures than would be supposed on the basis of the measurement of the upper lethal temperature, which has been commonly measured for many species, but is of less ecological significance.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00350361
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  • 2
    Electronic Resource
    Electronic Resource
    Sensory structures in the opercula of the barnacle Elminius modestus (1969)
    Springer
    Marine biology 4 (1969), S. 340-344 
    Details
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The opening and closing responses of balanomorph barnacles suggest that the barnacle can test the properties of the surrounding medium without placing its mantle cavity in communication with the medium. An investigation of the structure of the mantle tissues at the occludent edges of the opercular valves of Elminius modestus Darwin has revealed a collar of membraneous cuticle which carries a linear arrangement of sensory structures. These receptors are continued into cuticular hairs that project freely towards the medium between the edges of the valves, and their structure is similar to other arthropod sense organs which are considered to have a chemosensory function.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00350363
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  • 3
    Electronic Resource
    Electronic Resource
    Desiccation as a factor in the intertidal zonation of barnacles (1971)
    Springer
    Marine biology 8 (1971), S. 12-29 
    Details
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Four species of balanomorph barnacles, Balanus crenatus Brugière, B. balanoides (L.), Elminius modestus Darwin and Chthamalus stellatus (Poli), were studied to assess the susceptibility of intertidal barnacle species to desiccation. Known sized samples of barnacles were exposed to controlled desiccating conditions and subsequent survival and water loss were determined. It is clear that the ability to live high on the shore is dependent on a reduction of the overall permeability to water loss. Because of greater surface area to volume ratios, small stages are particularly prone to desiccation. In normal intertidal emersion periods, small stages of B. crenatus particularly, and also of B. balanoides and E. modestus which are similar in their desiccation resistance, would be susceptible to desiccation at normal temperatures and low humidities. Large barnacles would be more prone to death from high temperatures when the tide is out. The spat of C. stellatus, although surviving much longer than spat of larger dimensions of the other species, must also be prone to prolonged emersion conditions at high shore levels.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00349341
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  • 4
    Electronic Resource
    Electronic Resource
    Re-establishability in abstract biology (1966)
    Springer
    Bulletin of mathematical biology 28 (1966), S. 371-374 
    Details
    ISSN: 1522-9602
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Mathematics
    Notes: Abstract It is shown that any (ℳ ℛ) has some component which cannot be re-established after it has been inhibited. If there is only one such component, it must be central, that is, its inhibition stops the whole system. These results hold even when it is not assumed that ℳ is connected.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02476818
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  • 5
    Electronic Resource
    Electronic Resource
    Structural Changes in the Large Proteoglycan, Aggrecan, in Different Zones of the Ovine Growth Plate (1997)
    Springer
    Calcified tissue international 60 (1997), S. 71 -78 
    Details
    ISSN: 1432-0827
    Keywords: Key words: Aggrecan — Growth plate — Glycosaminoglycan — Sulfation.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine , Physics
    Notes: Abstract. The large cartilage proteoglycan, aggrecan, was found to vary throughout the ovine physis corresponding to the maturational state of the resident chondrocytes. Two populations of proteoglycan monomer were observed in articular, epiphyseal, and in the resting zone of growth plate cartilage. These proteoglycans contained chondroitin sulfate glycosaminoglycan chains sulfated predominantly in the 4 position along with lesser amounts of chondroitin-6-sulfate and keratan sulfate. In the proliferative zone of the growth plate, chondrocytes synthesize one population of proteoglycan monomer which was significantly larger than monomer populations in articular, epiphyseal, or resting zone and this size increase could be attributed to an increase in its constituent chondroitin sulfate side chains. As these chondrocytes progress through their life cycle they continue to modify the structural characteristics of the aggrecan molecule they synthesize. Thus, in the hypertrophic region of the growth plate, the proteoglycan monomer is larger again than in the proliferative region. Variation in sulfation pattern on aggrecan chondroitin sulfate side chains is also observed in the hypertrophic region with an increasing proportion of unsulfated residues present, which may play a role in the initiation of mineralization. In addition, increasing amounts of the carbohydrate sequence recognized by monoclonal antibody 7-D-4 are observed in the hypertrophic zone.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002239900188
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  • 6
    Electronic Resource
    Electronic Resource
    Balanomorph barnacle larvae in the plankton at McMurdo Sound, Antarctica (1989)
    Springer
    Polar biology 10 (1989), S. 175-177 
    Details
    ISSN: 1432-2056
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Ten larvae of a balanomorph barnacle were collected in plankton samples from under the sea-ice of McMurdo Sound in the austral spring 1985. This is the first record of planktonic barnacle larvae in the Antarctic Ocean. By deduction they are identified as Bathylasma corolliforme (Hoek) stage II nauplii and cyprids. They are described, the first of larvae of any species of the Bathylasmatidae. Their occurrence in McMurdo Sound is discussed in view of the apparent absence of adults in the Sound.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00238492
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  • 7
    Electronic Resource
    Electronic Resource
    Bose-Einstein correlations observed ine + e − annihilation at a centre of mass energy of 34 GeV (1986)
    Springer
    The European physical journal 30 (1986), S. 355-369 
    Details
    ISSN: 1434-6052
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Bose-Einstein correlations between pairs of charged particles produced ine + e − annihilation into hadronic final states have been studied as a function ofQ 2, the relative momentum squared of the two particles in their centre of mass, and as functions of various pairs of kinematic variables. The observed Bose-Einstein enhancement reveals correlation between the position and time of particle emission, and the space-time structure of the source is shown to differ from that of a pion fireball. While most features of the data are well accounted for in terms of the space-time structure of a simple string model, the correlations are better described by the simple function 1+αe −β Q 2. The implications of this result are discussed. The principal features of three particle correlations are explained in terms of the structure of the source inferred from the observed two particle correlations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01557599
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  • 8
    Electronic Resource
    Electronic Resource
    A detailed study of strange particle production ine + e − annihilation at high energy (1985)
    Springer
    The European physical journal 27 (1985), S. 27-37 
    Details
    ISSN: 1434-6052
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Results onK 0 and Λ production ine + e − annihilation at c.m. energies of 14, 22 and 34 GeV are presented. The shape of theK 0 and Λ differential cross sections are very similar to each other and to those of π±,K ± and $$p(\bar p)$$ . Scaling violations are observed forK 0 production. We obtain a value for the probability to produce strange quark-antiquark pairs relative to that to produce up or down quark-antiquark pairs of 0.35±0.02±0.05. The value ofR h =σ(e + e -→hX)/σµµ is shown to rise steadily with c.m. energy for all particle species. At 34 GeV we find 1.48±0.05K 0 and 0.31±0.03 Λ per event. We have searched for possible Λ polarization. The production ofK 0's and Λ's in jets is examined as a function ofp T 2 and rapidity and compared to that of all charged particles; the yields in two and three jets are also investigated. Results are presented from events with two baryons $$(\Lambda ,\bar \Lambda ,por\bar p)$$ observed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01642477
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  • 9
    Electronic Resource
    Electronic Resource
    Measurement of the radiative width of theA 2(1320) in two-photon interactions (1986)
    Springer
    The European physical journal 31 (1986), S. 537-543 
    Details
    ISSN: 1434-6052
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The reactione +e−→e +e− A2 (1320) has been observed by detecting the decayA 2→π+,π-π0. The two-photon width of theA 2 has been measured to be Г(A 2→γγ)=(0.09±0.27 (stat)±0.16 (syst)) keV. The cross section σ(γ γ→π+,π-π0 has been determined outside theA 2 resonance region.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01551074
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  • 10
    Electronic Resource
    Electronic Resource
    A measurement of theD 0 lifetime (1986)
    Springer
    The European physical journal 32 (1986), S. 343-348 
    Details
    ISSN: 1434-6052
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We have determined theD 0 lifetime from reconstructed vertices ofD 0 mesons produced ine + e − annihilations at an average center of mass energy of 42.2 GeV. From fifteen events theD 0 lifetime was determined to be (4.3 −1.4 +2.0 ±0.8)×10−13s.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01551829
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