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  • 1
    Electronic Resource
    Electronic Resource
    Synthesis and x-ray crystal structures of tetranickel and tetrazinc complexes of a macrocyclic tetranucleating ligand (1989)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 111 (1989), S. 3603-3610 
    Details
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ja00192a018
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  • 2
    Electronic Resource
    Electronic Resource
    Magnetic diagnostics and feedback control on TFTR (invited) (1985)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 56 (1985), S. 941-946 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: The various operating modes of TFTR require the use of a sophisticated system of magnetic diagnostics integrated with a feedback control system. This system has successfully controlled the plasma current and position over a range of major and minor radii, during strong compression, and will soon be used during intense neutral beam heating. Current and position values are held constant to within 2 kA and 1 cm. A wide variety of preoperational field measurements were required to determine proper compensation for dynamic stray fields due to eddy currents. Data from plasma profile diagnostics, such as bolometer arrays, Thomson scattering, soft x-ray diode array, and the scanning radiometer, have been compared to the absolute position deduced from magnetics. In addition to control functions, magnetic diagnostics on TFTR provide data on plasma current asymmetry, βθ, MHD fluctuations, loop voltage, and flux consumption. This paper will discuss the mechanical and electronic design constraints, as well as the analytic and calibration techniques required.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1138056
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  • 3
    Electronic Resource
    Electronic Resource
    Computer modeling of negative ion beam formation (1988)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 64 (1988), S. 6210-6226 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Sources of root-mean-square (RMS) emittance growth are described for negative ion extractors in both volume and surface negative ion sources and plasma low-energy beam transport systems. For surface negative ion sources of the Lawrence Berkeley Laboratory or Los Alamos National Laboratory [on Los Alamos Meson Particle Facility (LAMPF)], attention is paid to the nonlinear transverse emittance growth mechanism of the beam/warm plasma interaction. In some cases this is a large effect. In addition, non-normal sheath fields at a convertor are examined as a source of emittance growth. For volume sources, attention is paid to aberration production due to field penetration from the extractor, RMS emittance growth enhancement by a negatively biased plasma extraction electrode, and emittance growth caused by transverse extraction across a magnetic field. For both volume and surface sources, RMS emittance growth due to nonlinear aberration at the plasma extraction electrode is analyzed. Time-dependent contributions to emittance growth are also examined. Nonlinear saturation of ion acoustic waves caused by ion extraction from a warm plasma and beam transversal through a plasma are studied.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.342078
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  • 4
    Electronic Resource
    Electronic Resource
    Effects of dietary polyunsaturated fatty acid deficiencies on mortality, growth and gill structure in the turbot, Scophthalmus maximus (1985)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of fish biology 26 (1985), S. 0 
    Details
    ISSN: 1095-8649
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: The preparation of fish oil concentrates containing only (n-3) polyunsaturated fatty acids (PUFA) with different ratios of 20:5 (n-3)/22:6 (n-3) is described. Three groups of turbot were maintained on different diets containing: 1, 10% of the dry weight of the diet as natural fish oil, equivalent to 2.5% (n-3) PUFA and 0–23% (n-6) PUFA; 2, 10% of the dry weight of the diet as palmitic acid, i.e. no PUFA; 3, 8–7% palmitic acid and 1–3% of the dry weight as (n-3 PUFA and negligible (n-6) PUFA. Only the fish on the diet containing natural fish oil showed significant growth over a 15-week period. In addition there were high mortalities on the two experimental diets (2 and 3). Changing the ratio of 20:5 (n-3)/22:6 (n-3) from 13–8 to 2–2 in the diet containing 1 3% (n-3) PUFA and negligible (n-6) PUFA markedly decreased the mortalities. Fish fed the two experimental diets (2 and 3) developed gross changes in gill structure involving the disappearance of chloride cells, a ‘sloughing off’ of the epithelium along the primary and secondary filaments and an accumulation of cellular material in the inter-lamellar spaces. The tissue ultimately disintegrated to leave a skeleton of connective tissue and a mass of cellular material in the inter-lamellar spaces. It is concluded that 22:6 (n-3) is an essential fatty acid for turbot and that the gill epithelium is a sensitive indicator of this deficiency in this species.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1095-8649.1985.tb04255.x
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  • 5
    Electronic Resource
    Electronic Resource
    Observations on the size, dry weight and energy content of the eggs of some demersal fish species from British marine waters (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: The diameters, dry weights and calorific value of the eggs of seven gadoid species (cod, Gadus morhua, haddock, Melanogrammus aeglefinus, whiting, Merlangius merlangus, Norway pout, Trisopterus esmarkii, lythe. Pollachius pollachius, saithe, P. virens, ling. Molva molva) and one pleuronectid (plaice, Pleuronectes platessa) were measured. Ling eggs contain an oil globule; the eggs of the other species do not.Preservation in formaldehyde solution caused a small (〈4%) reduction in egg diameter but a large (15–30%) reduction in dry weight. There was no significant difference between the dry weights of unpreserved eggs weighed after (a) oven-drying at 60° C or (b) freeze-drying. Equations relating the dry weight of unpreserved eggs to unpreserved diameter and to preserved diameter are given for six species, and general equations that may apply to all North Sea gadoids whose eggs lack an oil globule are calculated. The calorific values of the dried, unpreserved eggs of all species except ling were similar (mean 23.19 kJ g−1, S.D. 1.50) but the value for ling was higher (mean 26.92 kJ g−1, S.D. 2.29). The estimated energy content (kJ 1000 eggs−1) of eggs of each species are tabulated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1095-8649.1987.tb05209.x
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  • 6
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    P. Kennedy, "African Capitalism" (Book Review) (1989)
    London : Periodicals Archive Online (PAO)
    Journal of historical geography. 15:4 (1989:Oct.) 433 
    Details
    ISSN: 0305-7488
    Topics: Geography
    Description / Table of Contents: Shorter Notices
    Notes: Reviews
    URL: http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pao:&rft_dat=xri:pao:article:h349-1989-015-04-000030
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  • 7
    Electronic Resource
    Electronic Resource
    Physical mapping of DXS134 close to the DXS52 locus (1989)
    Springer
    Human genetics 〈Berlin〉 82 (1989), S. 27-30 
    Details
    ISSN: 1432-1203
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The locus DXS134 (cpX67) has been physically linked to the cluster of polymorphic loci DXS52, DXS15, and DXS33. A comparison of physical and genetic distance indicates a high rate of recombination in this region.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00288266
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  • 8
    Electronic Resource
    Electronic Resource
    Localized fibrous tumour of serosal surfaces (1986)
    Springer
    Virchows Archiv 409 (1986), S. 349-363 
    Details
    ISSN: 1432-2307
    Keywords: Mesothelioma ; Serous membrane ; Localized tumour ; Histogenesis ; Ultrastructure
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary It is uncertain whether localized lesions of serosal membranes have a kinship to mesotheliomas or are truly fibromatous in nature. Ultrastructural and immunohistochemical investigations were carried out on 12 localized benign and malignant pleural and peritoneal tumours from 10 patients. Electron microscopic findings, including the consistent and non-fibroblastic cellular organization of localized neoplasms, the presence of some form of intercellular junctions in 7 of 10 cases, basal lamina deposition in 3 cases, and polarized microvilli in one case indicated a form of mesothelial differentiation. Using monoclonal and polyclonal antibodies, positive immunostaining of tumour cells for cytokeratin peptides was detected in one case, while antibody to vimentin stained four cases. Light microscopic, ultrastructural and immunohistochemical features of one benign localized serosal tumour, with a unique blend of epithelial and spindle cells, provided further evidence for a histogenic link between localized serosal tumours and diffuse epithelial mesotheliomas. On the basis of the current findings and reports in the literature, it would appear that the majority of localized tumours of serosal membranes are a subset of mesothelioma, while a minority are fibromas.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00708252
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  • 9
    Electronic Resource
    Electronic Resource
    Transition metal complexes of homoleptic polythia crowns (1987)
    Springer
    Journal of inclusion phenomena and macrocyclic chemistry 5 (1987), S. 169-172 
    Details
    ISSN: 1573-1111
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00655643
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  • 10
    Electronic Resource
    Electronic Resource
    Effects of vesicular-arbuscular mycorrhizae on growth and phosphorus and zinc nutrition of peanut (Arachis hypogaea L.) in an Oxisol from subtropical Australia (1989)
    Springer
    Plant and soil 117 (1989), S. 49-57 
    Details
    ISSN: 1573-5036
    Keywords: growth ; nutrition ; peanuts ; phosphorus ; VA mycorrhizae ; zinc
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Peanut plants (cv. Shulamit) were grown in an Oxisol soil in pots in the glasshouse to assess effects of soil sterilization and inoculation with spores of vesicular-arbuscular mycorrhizal fungi (VAMF) on the response to five rates of phosphorus (0 to 240 kg P ha−1) and two rates of zinc (0 and 10 kg Zn ha−1) fertilizers. Both P and Zn nutrition were affected by VAMF activity but the dominant role of VAMF in this soil type was in uptake of P. In the absence of VAMF there was a clear threshold level of P application (60 kg P ha−1) below which plants grew poorly, which resulted in a sigmoidal response of dry matter to applied P. The maximum response was not fully defined because dry matter production continued to increase up to 240 kg P ha−1. Tissue P concentration of non-mycorrhizal plants increased linearly with P rate and was always significantly less than that in mycorrhizal plants. Mycorrhizal plants responded without threshold to increasing P rate, attaining maximum dry matter at 120 kg P ha−1 in inoculated sterilized soil and at 30 kg P ha−1 in nonsterile soil. These differences in maximal P rates and in the greater dry matter produced in sterile soil at high P rates were attributed to the negative effects of the root-knot nematodeMeloidogyne hapla in nonsterile soil. Plant weight did not respond to zinc fertilizer but tissue Zn concentration increased with applied Zn. Tissue Zn concentration and uptake were increased by VAMF.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02206256
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