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  • 1985-1989  (7)
  • 1870-1879  (1)
  • 1987  (7)
  • 1875  (1)
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  • 1985-1989  (7)
  • 1870-1879  (1)
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  • 1
    Electronic Resource
    Electronic Resource
    Behavioural and physiological adaptations to a burrowing lifestyle in the snake blenny, Lumpenus lampretaeformis, and the red band-fish, Cepola rubescens (1987)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of fish biology 31 (1987), S. 0 
    Details
    ISSN: 1095-8649
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Observations have been made on the mode of burrow construction in the snake blenny, Lumpenus lampretaeformis, under laboratory conditions. It appears that head probing and lateral oscillations of the body are principally responsible for the excavation of the burrow which is completed within 24 h. The burrow structure has been analysed in detail, showing a mean depth of 7.2 cm with a maximum observed length of 73 cm, with most systems between 20 and 35 cm in length. Initially linear burrows with two openings are usually provided with a small side tunnel, giving the system a characteristic Y-shape.Burrow irrigation was investigated for the first time in L. lampretaeformis. The mean duration of burrow irrigation, by flexions of the tail of the fish, was 21 s with over 13 min h−1 spent in irrigating the burrow. The mean water displacement per irrigation period was 3.1 ml. The PO2 and PCO2 were measured in both surface water and within the burrow system of L. lampretaeformis. Surface water values for PO2 were high (〉 150 Torr) and PCO2 low (〈0.4 Torr). Hypoxic and hypercapnic conditions were measured in the burrow system itself, with PO2 values ranging between 57 and 129 Torr and PCO2 rising to 〉 1.3 Torr in some burrows.A comparative study of Cepola rubescens burrows indicated similar surface water PO2 and PCO2 values as in L. lampretaeformis. Burrow water PO2 values ranged between 60 and 94 Torr, with PCO2 values as high as 1.5 Torr being recorded. These results are discussed in relation to the adaptation of both species to a burrowing lifestyle.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1095-8649.1987.tb05268.x
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Comparison of cadexomer iodine and dextranomer for chronic venous ulcers (1987)
    Oxford, UK : Blackwell Publishing Ltd
    Clinical and experimental dermatology 12 (1987), S. 0 
    Details
    ISSN: 1365-2230
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Forty-two patients with chronic resistant varicose ulcers were observed for 6 weeks on standard out-patient therapy, and then randomly allocated to daily treatment with either cadexomer iodine (CI), a new topical agent, or dextranomer for a further 6 weeks, at which time ulcers judged clinically not to be responding could be changed to the other treatment for the remaining 20 weeks of the trial. There was no significant reduction in ulcer area during the first 6 weeks on CI or dextranomer. A significant preference for CI was shown by the optional crossover. Retrospective analysis of ulcer size shows this was not related to severity and preference was probably due to bias towards the new treatment, the trial not being blind. Neither therapy significantly reduced colonization by β-haemolytic Streptococcus, Staphytocoaus aureus, Pseudomonas or Proteus. The discrepancy between these and previous findings with CI is largely due to different methods of analysis rather than different results. We conclude that, in chronic resistant venous ulcers, topical therapy is of little importance compared with measures which improve tissue oxygenation and repair.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2230.1987.tb01939.x
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Dietary Vitamin C Delays UV-induced Eye Lens Protein Damage (1987)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 498 (1987), S. 0 
    Details
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1749-6632.1987.tb23783.x
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  • 4
    Electronic Resource
    Electronic Resource
    Metabolic responses of the prawns Palaemon elegans and P. serratus (Crustacea: Decapoda) to acute hypoxia and anoxia (1987)
    Springer
    Marine biology 95 (1987), S. 521-530 
    Details
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Using prawns, Palaemon elegans (Rathke) from intertidal pools on the Isle of Cumbrae, Scotland, and P. serratus (Pennant) from the subtidal at Plymouth, England, some metabolic responses to hypoxia and anoxia have been studied. P. elegans was found to have a greater tolerance of severe hypoxia than P. serratus. Tolerance of totally anoxic conditions, however, was limited to only 4 h in P. elegans and to approximately 1 h in P. serratus. exposure to moderate hypoxia (30 torr) resulted in little change in the concentration of L-lactate in the blood or in the tissues of either P. elegans or P. serratus. When exposed to extreme hypoxia (10 or 5 torr for P. elegans), however, there was a progressive increase in the concentration of L-lactate in the blood and in the tissues of both species. After normoxic conditions had been restored, the concentration of L-lactate in the blood and in the tissues returned to normal resting levels more rapidly in P. elegans than in P. serratus. Under hypoxic conditions, both P. elegans and P. serratus showed an increase in the concentration of blood glucose and a slight reduction in the glycogen content of the tissues. The concentrations of blood glucose and of tissue glycogen returned to normal levels within 6 h of the prawns being returned to normoxic conditions. The results of an in situ study in April and August 1986 to examine the metabolic responses of P. elegans to the hypoxic conditions normally experienced in high-shore rock pools are also presented. The ecological significance of the differing abilities of these species to survive hypoxic exposure is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00393095
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Vibrational anomalies in the superconducting compound La 1.85 Ba 0.15 CuO 4 (1987)
    [s.l.] : Nature Publishing Group
    Nature 327 (1987), S. 45-47 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The materials used in these experiments were prepared by a careful and thorough mixing of solutions of high-purity reagents (La(NO3)3, Cu(NO3)2 and Ba(NO3)2) in appropriate cation proportion followed by precipitation with a standard solution of sodium carbonate. The precipitate was carefully ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/327045a0
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    Errors in particle sizing by LDA due to turbidity in the incident laser beams (1987)
    Springer
    Experiments in fluids 5 (1987), S. 159-176 
    Details
    ISSN: 1432-1114
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Measurements have been made of the effect of flow turbidity on the visibility and pedestal amplitude of an anemometer signal when incident laser beams are interrupted by particulate flow. The purpose is to assess the likely accuracy of particle sizing and the reliability of discrimination between continuous and particulate phase velocities. Optical depths of field were varied between 2.5 × 10−2 and 14 × 10−2 mm the diameter of the interrupting particles ranged between 14 and 800 μm in six discrete ranges and the corresponding void fractions lay between 0.003% and 0.378%. The incident beam diameter was approximately 400 μm. The measured size is subject to both systematic and random errors when inferred from measurements of pedestal amplitude: the random error increases as the ratio of the incident beam diameter to that of the particulate phase decreases. Systematic errors corresponding to a 10% underestimation of diameter occur at void fractions of 0.003%, 0.01% and 0.018% for particles below 40 μm 75 μm and 105 μm respectively over a 5 cm depth of field. The r.m.s. error is smaller than 7% for particles below 40 μm for all conditions studied but increases with increasing diameter and exceeds 10% at void fractions greater than 0.1% for particles above about 100 μm. The random error in measured diameter derived from measurements of visibility is influenced mostly by the flow turbidity over the 5 cm of the incident beams closest to the measuring volume. For interrupting particles smaller than about 100 μm the r.m.s. error is similar to that for measurements based on the pedestal amplitude. Discrimination of the velocity signal between the particulate and dispersed phase, based on the separation of pedestal amplitudes, is likely to be unreliable if the particle diameter is comparable to the diameter of the incident beams and if the probability of two particles simultaneously present in each beam is not negligible. A method for estimating the level of turbidity at which discrimination is no longer possible is described.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00298456
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  • 7
    Electronic Resource
    Electronic Resource
    Growth of large chromosomally abnormal T cell clones in ataxia telangiectasia patients is associated with translocation at 14q11 (1987)
    Springer
    Human genetics 〈Berlin〉 76 (1987), S. 389-395 
    Details
    ISSN: 1432-1203
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Human T cell malignancies often show chromosome breaks at 14q11, within the α chain locus of the human T cell antigen receptor, with translocation of the distal portion of 14 to one of several sites. In patients with ataxia telangiectasia (A-T) the majority of T cell chromosome translocations associated with this disorder appear to occur at the sites of the T cell antigen receptor genes 7p14, 7q35, and 14q11 and may result in clone formation. In three large proliferating A-T T cell clones we have observed (including one which became malignant) and in most T cell tumours reported, the clonal chromosome exchange involves one breakpoint at 14q11 with the second breakpoint occurring in a gene not involved in the immunoglobulin supergene family. Our observations on A-T patients confirm the suggestion that chromosome exchanges involving either t(7;14)(p14;q11), t(7;14)(q35;q11), inv(7) (p14q35), or t(7;7)(p14;q35) confer only a small proliferative advantage on T cells in vivo without the capacity for malignant transformation and that the potential for malignant change is not a feature of all these rearrangements, but is restricted to cells or clones with other chromosome exchanges.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00272451
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    Paper (German National Licenses)
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  • 8
    Electronic Resource
    Electronic Resource
    Mittheilungen aus dem Göttinger Universitätslaboratorium. II. Ueber Nitro- und Amidophenyl- und Toluylsuccinimid (1875)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 8 (1875), S. 1225-1225 
    Details
    ISSN: 0365-9496
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.18750080297
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