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  • 1
    Digitale Medien
    Digitale Medien
    NMR study of rapidly quenched Fe95M5 crystalline alloys (M=C, B, P, Si, and Al) (1990)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 67 (1990), S. 5870-5872 
    Details
    ISSN: 1089-7550
    Quelle: AIP Digital Archive
    Thema: Physik
    Notizen: Rapidly quenched crystalline Fe95M5 alloys were studied by spin-echo NMR experiments for frequencies ranging from 10 to 300 MHz at 4.2 K. While x-ray diffraction for all these samples show the same bcc Fe pattern, NMR measurements reveal the details of their local structural character. The C atoms form an interstitial bcc solid solution with Fe as well as Fe3C-like short-range order (SRO). Similarly, an orthorhombic Fe3B-like SRO exists in the B-containing alloy. The Si- and P-containing alloys are substitutional bcc solid solutions in which the Si and P atoms replace Fe randomly. A SRO is also found in Fe95Al5 the Al atoms avoid being close to each other. The results demonstrate that atomic size plays a key role in forming the various kinds of atomic configurations in these alloys.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.345998
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  • 2
    Digitale Medien
    Digitale Medien
    Preparation of SrTiO3 thin films on Si(100) substrates by laser ablation: Application as buffer layer for YBa2Cu3O7 films (1992)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 61 (1992), S. 2228-2230 
    Details
    ISSN: 1077-3118
    Quelle: AIP Digital Archive
    Thema: Physik
    Notizen: SrTiO3 thin films have been deposited on Si(100) by pulsed laser ablation. The films were characterized by x-ray diffractometry, field emission scanning electron microscopy, and secondary ion mass spectrometry. The films show the (h00) or (hh0) preferential orientations depending on the substrate temperature and oxygen partial pressure during the deposition. Depth profiles indicate that films grow without an important reaction with the substrate. Superconducting YBa2Cu3O7−x thin films were successfully deposited by laser ablation on Si(100) substrates coated with SrTiO3 buffer layer. This indicates that SrTiO3 is a good material as a buffer layer for deposition of YBa2Cu3O7−x on silicon.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.108276
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  • 3
    Digitale Medien
    Digitale Medien
    Control of Nodulin Genes in Root-Nodule Development and Metabolism (1991)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Plant Physiology and Plant Molecular Biology 42 (1991), S. 507-528 
    Details
    ISSN: 1040-2519
    Quelle: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Thema: Biologie
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1146/annurev.pp.42.060191.002451
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  • 4
    Digitale Medien
    Digitale Medien
    A multispecies stock assessment of a pelagic coastal fishery of the south-west Gulf of Mexico (1992)
    Oxford, UK : Blackwell Publishing Ltd
    Aquaculture research 23 (1992), S. 0 
    Details
    ISSN: 1365-2109
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: Abstract. Multispecies stock assessment based upon Schaefer's theory was applied to a coastal pelagic fishery (Spanish mackerel, Scomberomorus maculatus (Mitchill); king mackerel, S. cavalla (Cuvier) and the blue runner, Caranx fusus (Geoffroy-St Hilaire)), from the west central Gulf of Mexico. Linear and non-linear systems of equations were estimated by using a multiple stepwise regression technique. The values of interaction parameters show a clear competition between mackerels, and technological interdependences between the blue runner and mackerels, The maximum yield estimation was from 4000 to 5000 tonnes, obtained with 23 and 34 beach seines respectively, depending on the applied model. Two stages were observed from the statistical records; in the first the Spanish mackerel is the most important species while in the second the abundance of this species declines and the others remain at the same level. Significant interactions were found from the first data group.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-2109.1992.tb00600.x
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  • 5
    Digitale Medien
    Digitale Medien
    Polarization fluoroimmunoassay of the herbicide dichlorprop (1993)
    s.l. : American Chemical Society
    Journal of agricultural and food chemistry 41 (1993), S. 2215-2219 
    Details
    ISSN: 1520-5118
    Quelle: ACS Legacy Archives
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft , Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1021/jf00035a074
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  • 6
    Digitale Medien
    Digitale Medien
    Trophic interrelations in a beach seine fishery from the northwestern coast of the Yucatan peninsula, Mexico (1994)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of fish biology 44 (1994), S. 0 
    Details
    ISSN: 1095-8649
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Biologie
    Notizen: The main trophic interrelations were analysed in 12 species which represent 93% of the total catch from a beach seine fishery developed in Celestún, Yucatán. The diet was determined based on monthly samples over 4 yr. Five different trophic guilds were found on the basis of feeding preferences: microcrustacean and polychaete feeders, piscivores, omnivores and herbivores. For microcrustacean feeders Orthopristis chrysoptera, Eucinostomus gula, E. argenteus and Opisthonema oglinum the diet is narrow with a large overlap between. For polychaete feeders, Arius felis, A. melanopus and Haemulon plumieri diet is broad with the higher overlap between the catfishes. Among piscivores, Bardiella chrysura and Harengula jaguana have a high overlap between them, but a lower one with other species from the community. Among omnivores Lagodon rhomboides has the broadest diet and is considered to be a generalist while Acanthostraceon quadricornis is a specialist having a very narrow diet and a lower value of overlap with the other species. Finally, Archosargus rhomboidalis is a herbivore with the narrowest niche breadth and lowest overlap. In addition to a description of diets and trophic inter-relations, the results emphasize the importance to the beach seine fishery of the benthic food resources.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1095-8649.1994.tb01241.x
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  • 7
    Digitale Medien
    Digitale Medien
    Mortality estimates of Scyliorhinus canicula in the Cantabrian sea using tag-recapture data (2005)
    Oxford, UK; Malden, USA : Blackwell Science Ltd
    Journal of fish biology 66 (2005), S. 0 
    Details
    ISSN: 1095-8649
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Biologie
    Notizen: Survival and recovery rates were obtained for small-spotted catshark Scyliorhinus canicula in the Cantabrian Sea (north of Spain) based on tagging data. A total of 7656 specimens were tagged from 1993 to 2001. Recovery models for multiyear tagging studies were applied using the programme Mark. The best model fitted was achieved considering constant survival and recovery rates following the Brownie parameterization. The outputs were a survival rate (S) 0·89 and a recovery rate (f) 0·006. The reduced parameterization (S and r) provided very similar results, 0·89 and 0·06 respectively. The total finite mortality estimated was therefore Z = 0·11.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.0022-1112.2005.00673.x
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  • 8
    Digitale Medien
    Digitale Medien
    Tolerance to aztreonam in patients allergic to betalactam antibiotics (1991)
    Oxford, UK : Blackwell Publishing Ltd
    Allergy 46 (1991), S. 0 
    Details
    ISSN: 1398-9995
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Notizen: To evaluate the safe use of aztreonam (AZT) in patients allergic to penicillins and other betalactam antibiotics we studied 29 patients from a group of subjects allergic to betalactams, diagnosed by presenting systemic reactions after skin tests or challenge tests. Skin tests with benzylpenicilloyl (BPO), benzylpenicilloate, benzylpenicillin, ampicillin, amoxicillin, cephamandole and AZT, radioallergosorbent test (RAST) to BPO and AZT, RAST inhibition and challenge tests were performed. One patient was skin test-positive to AZT, another patient was RAST AZT-positive. IgE antibodies were specific to AZT as demonstrated by RAST inhibition studies with AZT coupled to epsilon-amino caproic acid. Nevertheless, AZT was unable to inhibit either a pool of sera or individual sera positive to BPO. Although all our 29 patients tolerated the administration of AZT (including those with skin test or RAST positive) and AZT appears to be safe in these subjects, this does not indicate that all betalactam-allergic patients tolerate AZT administration
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1398-9995.1991.tb00570.x
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  • 9
    Digitale Medien
    Digitale Medien
    Specific IgE antibodies to vespids in the course of immunotherapy with Vespula germanica administered to patients sensitized to Polistes dominulus (1992)
    Oxford, UK : Blackwell Publishing Ltd
    Allergy 47 (1992), S. 0 
    Details
    ISSN: 1398-9995
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Notizen: Sera from a group of 12 patients with anaphylactic reactions to vespids were studied. Field observations and RAST values suggested that the offending insect was Polistes dominulus (PD). Specific IgE antibodies to PD appeared in all cases and to Vespula germanica (VG) in nine. Absorption studies in these basal sera showed that IgE antibodies to VG were due to cross-reactivity with PD. The RAST value to both venoms was higher after immunotherapy (IT) in six cases. IgE antibodies increased to determinants common to both vespids, and in 41% of the cases to specific epitopes of VG venom allergens not initially detected in the basal sera. In one case antibodies increased only to VG without a corresponding rise to PD. These results indicate that if the correct venom to which the individuals are sensitized is not administered IgE antibodies may appear which were not initially detected in the patients's era. The levels of these antibodies declined during the course of IT.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1398-9995.1992.tb02057.x
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  • 10
    Digitale Medien
    Digitale Medien
    Differences in serum IgE antibody activity to benzylpenicillin and amoxicillin measured by RAST in a group of penicillin allergic patients (1991)
    Oxford, UK : Blackwell Publishing Ltd
    Allergy 46 (1991), S. 0 
    Details
    ISSN: 1398-9995
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Notizen: To determine the influence of the acyl side chain on the IgE antibody specificity of the two most common penicillins inducing allergic reactions in our community, benzyl-penicillin (BP) and amoxicillin (AX), IgE positive sera from a group of 24 patients allergic to penicillin were studied. RAST was determined in parallel to benzyl penicilloyl-polylysine (BPO-PLL) and amoxicilloyl-polylysine (AX-PLL) in each serum, and values greater than an established coefficient of variation of 15% were considered as different for either of the haptens used (BP and AX). 16 sera proved to be more positive to BP (Group A), six to AX (Group B) and in two IgE was positive to both haptens with a similar value (Group C). RAST titration concentration effect curves and RAST inhibition studies with a pool of sera from each group (A, B, C) and individual sera showed that most of them were more specific for either BPO or AX, a minority being of similar value to both. These findings indicate that the side chain structure of penicillins is relevant in the constitution of the antigenic determinant, although in some instances the common chemical structure of betalactam is recognised mainly by the IgE antibodies. The clinical relevance of these data needs to be established.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1398-9995.1991.tb00635.x
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