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  • 21
    Electronic Resource
    Electronic Resource
    Effects of the shoot density of seagrass on fish and decapods: are correlation evident over larger spatial scales? (1992)
    Springer
    Marine biology 112 (1992), S. 139-146 
    Details
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Two conflicting models for the organisation of assemblages of fish and decapods associated with seagrass over large spatial scales, make contradictory predictions about the relationship between density of seagrass shoots and abundance, or diversity, of animals. We tested the predictions of both models by sampling small lish and decapods associated with two species of seagrass (Zostera capricorni Aschers and Posidonia australis Hook) at up to 16 sites within several estuaries in New South Wales, Australia, for 1.5 yr (December 1988 to March 1990). Variation in density of Z. capricorni shoots explained very little of the variation in abundance of animals. However, abundance of one species, the grass shirmp Macrobrachium intermedium, was more closely related to the density of shoots during non-recruitment seasons, suggesting that predation or emigration of individuals after settlement was greater in sparse beds. The effect of variation in density of P. australis shoots was confounded with consistent distribution patterns of most fish and decapod species. As a result, data from P. australis did not provide good tests of the hypotheses. We conclude that density of seagrass shoots explained very little of the large-scale variation in abundance of associated fish and decapods. The data do, however, support the inodel which predicts that the abundance of animals among separate seagrass beds will follow the supply of new individuals to them.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00349737
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  • 22
    Electronic Resource
    Electronic Resource
    Variation in assemblages of fish associated with deep and shallow margins of the seagrass Posidonia australis (1992)
    Springer
    Marine biology 114 (1992), S. 667-676 
    Details
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Little is known about the fish fauna of deep Posidonia australis seagrass beds in Australia. We investigated associated with the deep and shallow margins of P. australis during two surveys in Jervis Bay, New South Wales. Fish associated with deep and shallow seagrass at each of two areas within a large bed of P. australis were compared over a period of 3 mo (November 1986 to January 1987). This was followed by a larger scale survey in which we compared fish found at the two depths within three large beds of P. australis in Jervis Bay over 2 yr (September 1988 to June 1990). In the smaller scale survey there were marked dissimilarities in relative abhundance and composition of species between samples from deep and shallow P. australis. There were also significant differences in abundance between deep and shallow seagrass on most occasions for the majority of the dominant fish species. As a result of the small-scale survey, we concluded that differences in species composition of fish associated with deep and shallow P. australis may have been due to the presence of species from nearby bare substrate among the sparser leaves of the deep seagrass. The results of the smaller scale survey were not confirmed by the larger survey. The relative abundances of species in samples from deep and shallow P. australis were not dissimilar for all beds. In addition, it was rare for any of the dominant species to have significantly different abundances in deep and shallow seagrass. There was little evidence that the species composition of fish associated with deep P. australis was strongly influenced by the fauna of deep bare substrate. Rather, samples from deep P. australis were far more similar to those from shallow P. australis than to a comparable set of samples collected from deep bare substrata. This study demonstrates how the results and conclusions of small-scale survey work, a feature of many environmental impact asseesments, can be misleading when applied to larger spatial and temporal scales, even within the same bay.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00357264
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  • 23
    Electronic Resource
    Electronic Resource
    Reproductive biology of the commercial sea cucumber Holothuria fuscogilva in the Solomon Islands (2000)
    Springer
    Marine biology 136 (2000), S. 1045-1056 
    Details
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract  Reproduction of Holothuria fuscogilva (Selenka, 1867) in the Solomon Islands was investigated over a 4 yr period (1994 to 1998) by macroscopic and microscopic examination of the gonad tubules, the gonad index (GI) method, histological examination of gametogenesis, and spawning-induction trials. The gonad consisted of numerous tubules that dominated the coelom of gravid specimens. New tubules appeared in March, and grew in size and extent of branching until they reached their maximum size and maturity in August. Spawning occurred from August to October, with the majority of gametes released during October, although it was only partial in many individuals. After spawning, the tubules appeared wrinkled and resorbed into the gonad basis. A five-stage gonad maturity scale based on the macroscopic appearance of the gonad tubules corresponded with discrete stages of gametogenesis identified by histology. Gametogenesis was initiated in mid-March, with oogenesis and spermatogenesis occurring in parallel, followed by the growing stage (May to July) which was marked by active gamete development. Successful induction of spawning during the breeding period corroborated the GI and histological data. The uniform growth of gonad tubules indicated that H. fuscogilva in the Solomon Islands does not conform to the progressive tubule recruitment model described for other holothurians. An important application of this study is that the appearance of gonad tubules, removed by biopsy, can be used to determine the gonad condition of wild adults or captive broodstock.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002270000310
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  • 24
    Electronic Resource
    Electronic Resource
    Multiple discrete solutions of the incompressible steady-state Navier-Stokes equations (1988)
    Springer
    Numerische Mathematik 53 (1988), S. 31-50 
    Details
    ISSN: 0945-3245
    Keywords: AMS(MOS): 65N30 ; 6D05 ; CR: G1.8
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Summary This paper discusses the computation of multiple solutions of various discretizations of the steady state incompressible Navier-Stokes equations. Solution paths (α,R) satisfying the discrete system of equationsH(α,R)=0, where α represents the discrete flow field andR is the Reynolds number, are computed using a pseudo arc-length continuation procedure. For flows over the back end of an axially symmetric body with a cusped tail in a coaxial circular cylinder, the solution paths often exhibit “hairpin” turning points. Dependence of the paths on the mesh spacing and various selections for the discretizations of the convective and diffusive terms are presented.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01395877
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  • 25
    Electronic Resource
    Electronic Resource
    Ion beam sputtering apparatus for fabrication of compositionally modulated materials (1985)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 56 (1985), S. 1340-1343 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: A new apparatus for production of artificial compositionally modulated materials is presented. It consists of an ion gun that sputters from alternating targets on a rotating assembly, the position of which is controlled by a thickness monitoring crystal. The apparatus is simple, relatively inexpensive, and flexible, in that it allows deposition of metals, semiconductors, and insulators under the same conditions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1138511
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  • 26
    Electronic Resource
    Electronic Resource
    Plasma protein levels in normal human fetuses: 13 to 41 weeks' gestation (1993)
    Oxford, UK : Blackwell Publishing Ltd
    BJOG 100 (1993), S. 0 
    Details
    ISSN: 1471-0528
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Objective To establish reference ranges for the levels of alpha-fetoprotein, albumin, prealbumin (transthyretin) alpha-1-antitrypsin, transferrin, ceruloplasmin and total protein in the plasma of normal human fetuses and newborn babies.Design Prospective study of individual normal cases to fulfil objectives.Setting Pathology laboratories of the University of Edinburgh and the biochemistry laboratories of the University of Keele.Subjects Twenty-two normal fetuses 13 to 22 weeks of gestation and 66 babies born between 24 and 41 weeks gestation.Results Albumin is the predominant plasma protein throughout gestation. The levels of alpha-fetoprotein and prealbumin fell significantly with increasing gestation, whereas the concentrations of the other proteins studied increased. The ratios of individual proteins to total protein demonstrated similar trends.Conclusions This study provides developmental profiles of normal human fetal plasma proteins to serve as possible reference data for abnormal fetuses. Declining levels of prealbumin (transthyretin) were unexpected and suggest a functional role for this protein in early pregnancy.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1471-0528.1993.tb14313.x
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  • 27
    Electronic Resource
    Electronic Resource
    Regional policy handles in econometric models - Evidence from U.S. development outlays
    Amsterdam : Elsevier
    Regional Science and Urban Economics 16 (1986), S. 589-604 
    Details
    ISSN: 0166-0462
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Architecture, Civil Engineering, Surveying , Geography , Sociology , Economics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/0166-0462(86)90025-6
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  • 28
    Electronic Resource
    Electronic Resource
    Structure of Crystal Form IX of Bovine Pancreatic Ribonuclease A (1997)
    Copenhagen : International Union of Crystallography (IUCr)
    Acta crystallographica 53 (1997), S. 419-425 
    Details
    ISSN: 1399-0047
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: The X-ray structure of crystal form IX of bovine pancre- atic ribonuclease A (space group P212121) is reported at 1.6 Å resolution. The structure was refined to an R factor of 15.0% and includes coordinates for two sulfate ions, four methanol molecules and 82 waters. The structure could be superimposed on the highest resolution crystal structure of bovine pancreatic fibonuclease available (in space group P21) with an r.m.s, difference in main-chain atomic positions of 0.51 Å. Most of the larger differences between the two structures could be related to crystal lattice contacts. Superposition of the new structure with eight other structures of ribonuclease in six crystal forms resulted in an r.m.s, deviation from the average structure of 0.43 Å for all main-chain atoms. This similarity among structures exists in spite of the fact that all nine molecules are in different crystal environments.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0907444997000929
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  • 29
    Electronic Resource
    Electronic Resource
    The similarity of atomic radius of palladium(II) and palladium(IV) (1966)
    Copenhagen : International Union of Crystallography (IUCr)
    Acta crystallographica 21 (1966), S. 440-442 
    Details
    ISSN: 0001-5520
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Geosciences
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0365110X66003116
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  • 30
    Electronic Resource
    Electronic Resource
    Preferential Expression of the Human Vβ7.1 Gene Segment on CD8+ Peripheral Blood Lymphocytes (1995)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 756 (1995), 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.1749-6632.1995.tb44488.x
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