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  • 1
    Electronic Resource
    Electronic Resource
    MIGRATION IN THE PRESENCE OF A RUGGED INTERFACE WITH HIGH VELOCITY CONTRAST (1983)
    Oxford, UK : Blackwell Publishing Ltd
    Geophysical prospecting 31 (1983), S. 0 
    Details
    ISSN: 1365-2478
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences , Physics
    Notes: In the western coal-mining area of Ruhrkohle AG, reflection seismic prospecting for the Carboniferous coal measures is severely impaired by structures with halokinetic features. These structures make the interface between Mesozoic and Paleozoic layers, i.e., the top of Zechstein in general, very rugged. Unfortunately the velocity contrast at this interface is very high in that area, the ratio of velocities being 1.5 to 2.0. Therefore, migration and stacking become a problem.Three types of migration are presented:〈list xml:id="l1" style="custom"〉1(f, x)-time-migration with vertical time-to-depth conversion as a second step.2Kirchhoff migration down to a level determined approximately by the highest points of the top of Paleozoics, i.e., 0.35 s, and Kirchhoff-downward continuation for all times exceeding 0.35 s. Intermediate static corrections for these latter times with subsequent (f, k)-time-migration and final vertical time-to-depth conversion.3Direct depth migration in the (f, x)-domain using three interval velocities.In all cases an intermediate picking of the velocity interfaces is necessary. In case 2 this occurs at an earlier stage of the process than in case 1, and in case 3 at a still earlier stage.The results of the second and third migration procedures are superior to those of the first. Possibilities for misinterpretation of faults are reduced considerably when the second or third migration procedure is applied.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2478.1983.tb01072.x
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  • 2
    Electronic Resource
    Electronic Resource
    MAPPING NON-REFLECTING VELOCITY INTERFACES BY NORMAL MOVEOUT VELOCITIES OF UNDERLYING HORIZONS (1980)
    Oxford, UK : Blackwell Publishing Ltd
    Geophysical prospecting 28 (1980), S. 0 
    Details
    ISSN: 1365-2478
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences , Physics
    Notes: The normal moveout velocity of a reflecting bed is a function of the dips and curvatures of all overlying velocity interfaces. Now let the (N– 1)th velocity interface be a non- (or badly) reflecting bed, whereas the other interfaces, including the base of the Nth layer, reflect satisfactorily, and let the velocities UN– 1 and UN of the (N– 1)th and Nth layer, respectively, be known. Then the normal moveout velocity for the base of the Nth layer, if known in one direction at a certain part of the surface of the earth, provides a second order differential equation in the horizontal coordinates x and y for the depth ZN – 1(x, y) of the unknown interface.The mathematics becomes rather simple in the case of two-dimensional geological structures. For this case and N= 2 the differential equation mentioned can be solved by stepwise integration or by iteration. One of the many possible applications of the new concept is the determination of the structure of the base of an overthrusting sheet.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2478.1980.tb01231.x
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  • 3
    Electronic Resource
    Electronic Resource
    Stimulating the Potential: Creative Performance and Communication in Innovation Teams (2004)
    Oxford, UK and Malden, USA : Blackwell Publishing Ltd
    Creativity and innovation management 13 (2004), S. 0 
    Details
    ISSN: 1467-8691
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Economics
    Notes: Creativity is essential to successful new product development efforts. Teams constitute the organizing principle in most modern innovation activities. Although creativity research has revealed many factors influencing individual creativity, little is known about how team-level creativity is determined. Since the creative innovation task requires teams to combine and integrate input from multiple team members, the team's communication pattern is an important determinant of team creativity. Based on a sample of 44 NPD teams in eleven companies, this study examines the effects of team-member communication on team creativity. It is found that both interaction frequency and subgroup-formation of communication have a negative relationship to team creativity. Theoretical and practical implications are discussed, and further research is indicated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1467-8691.2004.00294.x
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  • 4
    Electronic Resource
    Electronic Resource
    Extracellular release of photosynthetic products by freshwater phytoplankton populations, with special reference to the algal species involved (1982)
    Oxford, UK : Blackwell Publishing Ltd
    Freshwater biology 12 (1982), S. 0 
    Details
    ISSN: 1365-2427
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: SUMMARY. Over three successive years, depth profiles of C-fixation and excretion, chlorophyll-a concentrations, phytoplankton species composition and bacterial numbers were determined in Lake Vechten, a slightly eutrophic lake in The Netherlands. Special attention was given to the method used to measure extracellular release.Excretion of dissolved organic 14C depended largely upon the photo-synthetic activity of the phytoplankton, ranging from 0–2.5 mg m-1 h-1, representing a percentage extracellular release (PER) of 0–25%.During a period in August, however, a subsurface chlorophyll-a maximum at 5–7 m depth coincided with high excretion rates of up to 10 mg Cm-3 h-1 (PER = 55%). Phytoplankton analysis revealed a stratification in numbers of Mallomonas caudata with a maximum at 5–7 m depth.The results suggest that in these water layers bacterial populations grew at the expense of the dissolved organic carbon compounds excreted by Mallomonas caudata. This means that extracellular release can temporarily function as an important nutrient source for the heterotrophie community in addition to the more or less constant dissolved organic carbon pool.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2427.1982.tb00648.x
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  • 5
    Electronic Resource
    Electronic Resource
    Fluid Flow and Solute Migration Within the Capillary Fringe (2002)
    Oxford, UK : Blackwell Publishing Ltd
    Ground water 40 (2002), S. 0 
    Details
    ISSN: 1745-6584
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Geosciences
    Notes: Laboratory experiments involving both homogeneous and heterogeneous porous media are used to demonstrate that fluid flow and solute transport will occur regularly in the capillary fringe (CF), including both vertical (upward as well as downward) and horizontal flow velocities. Horizontal flow above the water table appears to be limited primarily to the region of high water saturation (i.e., the CF), an observation supported by numerical modeling and consistent with the literature. Beyond observations presented in prior literature, it was observed that exchange of water within the CF with water below the water table is active, with flux both from the CF downward across the water table and from the region below the water table, upward into the CF. This flux is enhanced by the presence of physical heterogeneity. These findings strongly contrast the common conceptualization of predominantly downward vertical fluid flow through the unsaturated zone, with transition to fully three-dimensional flow only below the water table. Based on these observations, it is suggested that the CF may affect, far more significantly than is usually assumed, the natural geochemical and microbial conditions present in the region of transition from unsaturated to saturated ground water flow.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1745-6584.2002.tb02493.x
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  • 6
    Electronic Resource
    Electronic Resource
    Evidence that growth hormone-induced elevation in routine metabolism of juvenile Atlantic salmon is a result of increased spontaneous activity (2001)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of fish biology 59 (2001), S. 0 
    Details
    ISSN: 1095-8649
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Growth hormone (GH) significantly increased the growth in mass and length of Atlantic salmon parr. It also significantly increased routine oxygen consumption (MO2). This change in routine MO2 could be attributed to an increase in activity, but not resting MO2. Any elevation in resting MO2 due to GH treatment is much lower than previously suggested.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1095-8649.2001.tb02379.x
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  • 7
    Electronic Resource
    Electronic Resource
    Genetic differences in physiology, growth hormone levels and migratory behaviour of Atlantic salmon smolts (2001)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of fish biology 59 (2001), S. 0 
    Details
    ISSN: 1095-8649
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Out of five strains of Atlantic salmon Salmo salar of 1+ years released upstream of a fyke net in the River Gudenaa in 1996, three, Lagan, Ätran and Corrib, migrated immediately, 50% of the recaptured fish reaching the net in 3–6 days. Burrishoole and Conon fish migrated with a 15–19 day delay. Smolt development in 1997 at the hatchery showed a spring surge in gill Na+, K+-ATPase activity in all strains which was correlated with increased seawater tolerance. Differences in the timing of gill enzyme development matched the observed migration pattern well. Lagan, Ätran and Corrib strains reached high enzyme activity earlier than the Burrishoole and Conon strains, and strains with delayed enzyme development and migration showed a delayed regression of seawater tolerance compared with the early strains. Inter-strain differences in plasma growth hormone profiles could not be related to the observed patterns of Na+, K+-ATPase and seawater tolerance development. The study gives evidence of genetic influence on the timing and intensity of smolting and subsequent migration in Atlantic salmon.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1095-8649.2001.tb02336.x
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  • 8
    Electronic Resource
    Electronic Resource
    Post-release adaptation processes of hatchery-reared honmasu salmon parr (2000)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of fish biology 56 (2000), S. 0 
    Details
    ISSN: 1095-8649
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Hatchery-reared honmasu salmon Oncorhynchus rhodurus × masou parr released into the Yanagisawa River, Tochigi Prefecture on 24 June 1996 increased significantly in length and weight by November, while siblings retained in hatchery tanks did not. Plasma growth hormone (GH) levels of the released parr increased from 1 day after the release until 23 August, while the GH levels of the wild parr in the river did not increase. The released parr started to consume various natural prey organisms within a day after release. However, stomach fullness of the released parr was considerably lower than that of the wild parr during the first week following release. Trypsin activity in the released parr increased after 23 August, 2 months post-release. The results demonstrate that the released parr adapt to the natural river environment within weeks. Endocrine control by GH and exocrine pancreas activity appear to play important roles in the post-release adaptation processes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1095-8649.2000.tb02092.x
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  • 9
    Electronic Resource
    Electronic Resource
    Fitness-related effects of growth investment in brown trout under field and hatchery conditions (2000)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of fish biology 57 (2000), S. 0 
    Details
    ISSN: 1095-8649
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: The mortality of brown trout Salmo trutta over winter in a near-natural stream was not significantly increased by growth hormone (GH) treatment, but lipid reserves were lower in GH-treated fish. As GH-treated trout grew faster than controls, GH appears to promote growth at the expense of investment in maintenance. However, the growth promoting effect of GH was much more pronounced in the hatchery than in the stream, suggesting that the pay-off associated with increased growth investment is higher under hatchery conditions with unrestricted food supply than in wild, where food availability is limited.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1095-8649.2000.tb02175.x
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  • 10
    Electronic Resource
    Electronic Resource
    C4 AND HLA HAPLOTYPES ASSOCIATED WITH PARTIAL INHIBITION OF ANTI-RG AND ANTI-CH (1984)
    Oxford, UK : Blackwell Publishing Ltd
    International journal of immunogenetics 11 (1984), S. 0 
    Details
    ISSN: 1744-313X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology , Medicine
    Notes: Rg and Ch typing was performed, by serum inhibition, on 145 families that had been typed for HLA/C4/BF/C2 with a view to assessing partial inhibition (p.i.) of anti-Rg/Ch and its haplotype associations. Rg p.i. was found predominatly with the C4A*3A*,2,B*QO homoduplicated C4 haplotype and BFF. The original type of Ch p.i. (Nordhagen et al., 1980) was closely associated with the allotype C4B 2, which also occasionally exhibited complete inhibition (c.i.), but this Ch p.i. was also found with the C4A*1,B*QO haplotype (Rittner et al., 1984a). The second type of Ch p.i. (Giles, 1984) was closely associated with the C4B 1 allotype most frequently in the haplotype C4A*6,B*1 but also with C4A*3,B*1. Both types of Ch p.i. are usually found with BF S. The present data indicate that the determinants of Rg and Ch are not directly related to any particular C4 allotype or extended haplotype.Further examples of C4A 1 with Ch and C4B 5 without Ch determinants have been detected and theoretical considerations are discussed as to how they might have arisen from unequal crossovers in homologous regions that result in hybrid protein molecules.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1744-313X.1984.tb00817.x
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