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  • 1
    Electronic Resource
    Electronic Resource
    A high-resolution, fluorescence-based, semiautomated method for DNA fingerprinting
    Amsterdam : Elsevier
    Genomics 4 (1989), S. 129-136 
    Details
    ISSN: 0888-7543
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/0888-7543(89)90291-7
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  • 2
    Electronic Resource
    Electronic Resource
    Biotin-related Abnormal Fat Metabolism in Chickens and Its Consequences (1985)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 447 (1985), 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.1749-6632.1985.tb18459.x
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  • 3
    Electronic Resource
    Electronic Resource
    Food aid reconsidered assessing the impact on Third World countries - Edited by Edward Clay and Olav Stokke Frank Cass, London, in collaboration with EADRTI, Geneva, 1991
    Amsterdam : Elsevier
    Food Policy 17 (1992), S. 89 
    Details
    ISSN: 0306-9192
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology , Economics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0306-9192(92)90023-Q
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  • 4
    Electronic Resource
    Electronic Resource
    Effects of High-Fat Diet on Mature Bone Mineral Content, Structure, and Mechanical Properties (1998)
    Springer
    Calcified tissue international 63 (1998), S. 74-79 
    Details
    ISSN: 1432-0827
    Keywords: Key words: Saturated fat — Bone mechanics — Cortical bone — Cancellous bone — Osteoporosis.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine , Physics
    Notes: Abstract. Diets with a high saturated fat content can produce deleterious effects on the absorption of dietary calcium and consequently an adverse effect on bone mineralization in growing animals. Hence dietary fat may have long-term consequences for skeletal health and skeletal pathologies such as osteoporosis. Whether a diet high in saturated fat has similar negative effects on adult bone, however, remains unresolved. Thus, we investigated effects of a high-fat diet on mature bone structure and mechanics. Adult (40-week-old) roosters were maintained for 20 weeks on either a diet high in saturated fat (HF) or a low-fat (LF) diet. Cortical bone samples (tarsometatarsus) were tested mechanically in three-point bending, and cancellous bone cores from the femoral condyles and tibial plateau (four sites per knee) were tested mechanically in compression. Cortical bone cross-sectional areal data were also compared among the groups, and bone mineral content (BMC) was determined (by ashing) for both cortical bone and cancellous bone samples. There were no significant high-fat diet effects on mature cortical bone mechanical properties, geometric structure, or mineral content. Diet, however, did affect cancellous bone composition. For example, LF cancellous BMC was significantly greater than HF. Mechanical properties of the cancellous bone showed similar trends such that LF cancellous bone strength was consistently greater than HF. The potential for adverse effects of a HF diet on intestinal calcium absorption in the mature animal may be more apparent in cancellous bone, with its faster rate of turnover, than in cortical bone. Changes in cancellous bone structure and mechanical properties, related to dietary saturated fats, may have implications for understanding the role of nutrition in skeletal health and prevention of pathological bone loss (osteoporosis).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002239900492
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  • 5
    Electronic Resource
    Electronic Resource
    Vitamin E stimulates trabecular bone formation and alters epiphyseal cartilage morphometry (1995)
    Springer
    Calcified tissue international 57 (1995), S. 293-300 
    Details
    ISSN: 1432-0827
    Keywords: Vitamin E ; Lipids ; Lipid peroxidation ; Epiphyseal cartilage ; Bone morphometry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine , Physics
    Notes: Abstract The effects of dietary vitamin E (VIT E) and lipids on tissue lipid peroxidation and fatty acid composition, epiphyseal growth plate cartilage development, and trabecular bone formation were evaluated in chicks. A 2×2 factorial design was followed using two levels (30 and 90 IU/kg of diet) of dl-α-tocopheryl acetate and two different dietary lipids. The basal semipurified diet contained one of the following lipid treatments: anhydrous butter oil (40 g/kg)+ soybean oil (60 g/kg), [BSO], or soybean oil (100 g/kg), [SBO]. After 14 days of feeding, the level of α-tocopherol in plasma was higher and thiobarbituric acid reactive substances (TBARS) were less in plasma and liver of chicks supplemented with 90 IU of VIT E compared with those given 30 IU of VIT E. Body weights and tibiotarsal bone lengths were not affected by the dietary treatments Saturated fatty acids (14:0, 15:0, 16:0, 17:0, and 18:0) were increased in tibiotarsal bone of chicks fed the BSO diet. In contrast, total polyunsaturated fatty acids and the ratio of unsaturated fatty acids/saturated fatty acids were higher in plasma of chicks fed SBO compared with the values from chicks fed BSO. The thickness of the entire growth plate cartilage and the lower hypertrophic chondrocyte zone was significantly greater in chicks fed 90 IU/kg of VIT E. Kinetic parameters on bone histomorphometry indicated that mineral apposition rate was higher in chicks fed 90 IU/kg of VIT E. The interaction effect between the VIT E and BSO treatments led to the highest trabecular bone formation rate among the groups. These data suggest that VIT E protects against cellular lipid peroxidation in cartilage to sustain normal bone growth and modeling.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00298885
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  • 6
    Electronic Resource
    Electronic Resource
    The influence of physical factors and ornithogenic products on plant and arthropod abundance at an Inland Nunatak group in Antarctica (1989)
    Springer
    Polar biology 10 (1989), S. 151-160 
    Details
    ISSN: 1432-2056
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Robertskollen is a group of geologically similar nunataks in western Dronning Maud Land, Antarctica, with breeding colonies of snow petrels Pagodroma nivea at some of the nunataks. Transects determining macro-plant structure and cover were conducted along an a priori determined bird-influence gradient to assess the relative importance of ornithogenic products and physical factors on plant assemblages. Fine-scale (intra-transect) dispersion patterns of plants were determined primarily by physical factors affecting water availability (i.e. the amount of drift-snow available and the effects of shelter and shade on evaporation rates). Coarse-scale (inter-transect) analysis of plant dispersion patterns, however, showed significant responses along the bird-influence gradient, with consistent responses between nunataks. Plant cover was directly related to bird-influence, but was depressed within bird colonies, apparently due to excessive nutrient enrichment. Mites (Acari) were the only arthropods recorded at Robertskollen and total mite abundance was related to plant cover, although specific responses varied. Thallus diameters of the abundant lichen Umbilicaria decussata decreased with decreasing bird influence, suggesting that nutrients limit plant growth away from bird colonies. Soil concentrations of major plant nutrients, N, P and K, were significantly greater close to bird colonies. We conclude that nutrients in ornithogenic products have direct causal effects on the abundance and dispersion of the biota of inland Antarctic nunataks, and that the effects of nutrient enrichment are detectable at different spatial scales from the effects of physical factors.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00239162
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  • 7
    Electronic Resource
    Electronic Resource
    Factors affecting the stress dependence of creep of polycrystalline ceramics (1977)
    Springer
    Journal of materials science 12 (1977), S. 2135-2138 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00561992
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  • 8
    Electronic Resource
    Electronic Resource
    Factors affecting the stress dependence for creep of polycrystalline magnesia (1979)
    Springer
    Journal of materials science 14 (1979), S. 1767-1769 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00569303
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  • 9
    Electronic Resource
    Electronic Resource
    Application of the crack opening displacement approach to the prediction of pressurized tube failure (1968)
    Springer
    International journal of fracture 4 (1968), S. 233-243 
    Details
    ISSN: 1573-2673
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Résumé Des étalonnages ont été obtenues entre le déplacement de l'ouverture des fissures et la contrainte circonferentielle lots de la mise sous pression de tubes S.G.H.W.R. d'un diamètre de 12,7 cm et comportant des défauts longitudinaux introduits artificiellement. Les étalonnages ont été utilisées pour déterminer une formule empirique pour le résilience à rupture en déformation plane KIc. On a mesuré den valeurs critiques du déplacement de l'ouverture den fissures sur de petites éprouvettes entaillees destinées à den essais de flexion et qui ont été découpées dans den tubes éclatées; au moyen de l'étalonnage citée en haut, on s'est servi de ces éprouvettes pour calculer la déformation limite correspondante. La bonne concordance avec les déformations limites determinées expérimentalement indique qu'on peut se servir de cette éprouvette á une échelle réduite pour prédire la comportement den tubes.
    Abstract: Zusammenfassung Eichbeziehungen zwischen der Rissöffnungsverschiebung (C.O.D.) and der Tangentialspannung wurden dadurch erhalten, dass SGHWR—Rohre mit einem Durchmesser von 12,7 cm and künstlich erzeugten Längsfehlern unter Druck gesetzt wurden. Die Beziehungen wurden dazu benutzt, um eine empirische Formel für die Bruchzähigkeit im ebenen Formäderungszustand KIc zu bestimmen. Kritische C.O.D.—Werte wurden an kleinen aus aufgeplatzten Rohren geschnittenen Kerbbiegeproben gemessen and wurden mit Hilfe der obengenannten Eichung benutzt, um die entsprechende Grenzspannung zu berechnen. Die gute Übereinstimmung mit der experimentell ermittelten Grenzspannung deutet darauf hin, dass man these Kleinprobe zur Voraussage den Rohrverhaltens verwenden kann.
    Notes: Abstract Calibrations have been obtained between the crack opening displacement and the hoop stress during the pressurization of 5 in. diameter tubes containing artificially-introduced longitudinal defects. The calibrations have been used to determine an empirical formula for the plane strain fracture toughness, KIC. Critical crack opening displacement values have been measured on small notched bend specimens machined from burst tubes, and by means of the above calibration they have been used to calculate the corresponding tube failure stress. Good agreement with the experimentally—determined failure stresses indicates that this small scale specimen can be used to predict the behavior of these tubes used in a steam generating heavy water reactor.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00185259
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  • 10
    Electronic Resource
    Electronic Resource
    The development of GABA-like immunoreactivity in the thoracic ganglia of the locust Schistocerca gregaria (1988)
    Springer
    Cell & tissue research 254 (1988), S. 635-646 
    Details
    ISSN: 1432-0878
    Keywords: Neurotransmitters ; Development, ontogenetic ; Immunocytochemistry ; Nervous system, central ; GABA ; Schistocerca gregaria (Insecta)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The development of GABA-like immunoreactivity was investigated in embryonic and juvenile locusts using an antibody raised against GABA-protein conjugates. GABA-like immunoreactivity was first detectable in the neuropile of embryonic ganglia at 55% development, and in neuronal somata at 62% development. The total number of immunoreactive somata increased between 62% and 85% embryonic development, and followed an anterio-posterior pattern of expression. At 85% development, the number of immunoreactive somata reached adult levels and no change in number was then seen. In embryonic stages and first and second juvenile instars two dorsal and four ventral groups of somata were labeled in all three thoracic ganglia, whilst in later juvenile instars one of the dorsal groups was visible as a separate entity only in the metathoracic ganglion. These early patterns were modified by alterations in the positions of some of the groups during late embryogenesis and during juvenile development to produce the adult pattern. The results show that the development of GABA expression is similar to that of other neurotransmitters. The characteristics of the development of immunoreactivity indicate that some of these immunoreactive clusters may be derived from clonally related neurones. Finally, we demonstrate the presence of immunoreactive somata and processes in embryos, which correspond to those of identified local and intersegmental interneurones studied in the adult.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00226514
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