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  • 1
    Electronic Resource
    Electronic Resource
    Surface hydrology and soil movement in an arid karst: the Nullarbor Plain, Australia (1994)
    Springer
    Environmental geology 23 (1994), S. 125-133 
    Details
    ISSN: 1432-0495
    Keywords: Karst ; Soil movement ; Hydrology ; Australia
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract The Nullarbor Plain is the largest karst area in Australia (220,000 km2) and one of the largest in the world. Its climate is arid (Köppen BWk and BWh), and the surface relief is less than 10m. The landscape is divided into extensive closed karstic depressions separated by low rocky ridges, and the dominant vegetation is chenopod shrubland. The extent and severity of soil degradation has been assessed using remote sensing. GPS rectified images from 1972–1973, 1979, 1983, 1988, and 1991 have been compared for two sites on the Nullarbor. Over the 19 years the total extent of bare soil has reduced significantly, but some areas around water points have degraded and there is some disturbance due to fossorial wombats. Sheet-flow processes occur during intense rainfall events, which happen two or three times per decade. Runoff only occurs after the 10− or 50− year return frequency events, and at these times turbid water ponds in depressions and enters caves. Surface soil sorptivity and hydraulic conductivity differ markedly between ridges and depressions; the ridges are clearly zones of groundwater recharge, while ponding is evident in most depressions. Sorptivity is influenced by the extent and nature of ground cover and cryptogam crusts on the soil. The landscape has been divided into classes on the basis of vegetation type and percentage of foliage cover. In each class the activities of fallout radionuclides will be determined by high resolutionγ spectroscopy. Preliminary results suggest that in undisturbed sites little sediment movement has occurred over the time scale of cesium-137 (the last 35 years) but that the landscape has been well sorted over a much longer time scale. Future work will investigate disturbed sites to estimate relative soil loss during the pastoral period.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00766986
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  • 2
    Electronic Resource
    Electronic Resource
    Growth and properties of large single crystals of YBa"2Cu"3O"7"-"δ
    Amsterdam : Elsevier
    Physica C: Superconductivity and its applications 162-164 (1989), S. 895-896 
    Details
    ISSN: 0921-4534
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0921-4534(89)90510-8
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  • 3
    Electronic Resource
    Electronic Resource
    Systematics of the Y"xBa"l"-"xCuO"y superconductors
    Amsterdam : Elsevier
    Physica C: Superconductivity and its applications 153-155 (1988), S. 818-819 
    Details
    ISSN: 0921-4534
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/S0921-4534(88)80104-7
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  • 4
    Electronic Resource
    Electronic Resource
    A prospective study of the association between home gas appliance use during infancy and subsequent dust mite sensitization and lung function in childhood (2001)
    Oxford, UK : Blackwell Science, Ltd
    Clinical & experimental allergy 31 (2001), S. 0 
    Details
    ISSN: 1365-2222
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Background Home gas appliance use has been associated with child respiratory illness but prospective data on the relationship between infant exposure and the development of child allergic disease has not been readily available.Objectives (a) To determine if home gas appliance use is associated with increased risk of house dust mite (HDM) sensitization. (b) To examine whether any association between current home gas use and airway obstruction is influenced by HDM sensitization.Methods Design: an 8-year follow-up birth cohort study of children born during 1988 and 1989. Participants: a population-based sample (n = 498) of children who participated in the Tasmanian Infant Health Survey (TIHS) and resided in Northern Tasmania in 1997 (84% of eligible children). Main outcome measures: (a) Skin prick test reaction to nine allergens, including Dermatophagoides pteronyssinus (Der p 1) and Dermatophagoides farinae (Der f 1). (b) Spirometric lung function indices, including forced expiratory volume in one second (FEV1) and forced vital capacity (FVC).Results The relative risk for home gas appliance use at 1 month of age and HDM sensitization was 1.98 (1.04, 3.79) in a cohort analysis with confounder matching. Current home gas use was also associated with HDM sensitization (ARR 1.73 (1.43, 2.76)). Current home gas use was related to a stronger (P = 0.006) reduction in the FEV1 : FVC ratio among HDM-sensitive children (adjusted difference − 6.2% (− 10.0 to − 2.4)) than non-HDM-sensitive children (adjusted difference − 0.3% (− 2.5 to 1.8)).Conclusion Indoor pollutants from gas combustion may increase the likelihood of initial sensitization to HDM and play a role in the development of atopic asthma. HDM-sensitized children may be more vulnerable to indoor pollutant-induced airway obstruction. The ability of this study to detect such effects may partly reflect unflued gas appliance use among this sample.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-2222.2001.01163.x
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  • 5
    Electronic Resource
    Electronic Resource
    An association between plastic mattress covers and sheepskin underbedding use in infancy and house dust mite sensitization in childhood: a prospective study (2003)
    Oxford, UK : Blackwell Science Ltd
    Clinical & experimental allergy 33 (2003), S. 0 
    Details
    ISSN: 1365-2222
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Background Higher house dust mite (HDM) allergen exposure during infancy has been associated with increased HDM sensitization. Infant bedding has been associated with the accumulation of varying levels of HDM. Prospective data on the relationship between infant bedding and the development of HDM sensitization has not been previously examined.Objectives To determine if particular types of bedding used in infancy are associated with increased risk of house dust mite sensitization in childhood.Methods A population-based sample (n = 498) of children born in 1988 or 1989, and who were resident in Northern Tasmania in 1997, participated in this study. These children were part of a birth cohort study (1988–95), the Tasmanian Infant Health Survey. Data on infant underbedding and mattresses was available on 460 and 457 children, respectively. The main outcome measure was HDM sensitization defined as a skin prick test (SPT) reaction of 3 mm or more to the allergens of Dermatophagoides pteronyssinus and/or Dermatophagoides farinae.Results The use of either sheepskin underbedding or plastic mattress covers in infancy was associated with an increased risk of sensitization to HDM allergens at age 8 years. The adjusted risk ratio (RR) for sensitization to HDM with sheepskin in infancy was 2.27 (95% CI: 1.14, 4.55), P = 0.020. The adjusted RR for sensitization to HDM with the use of plastic mattress covers in infancy was 2.06 (95% CI: 1.22, 3.51), P = 0.007. The use of a foam mattress in infancy was not related to subsequent HDM sensitization.Conclusion Infant's bedding plays a role in the development of HDM sensitization in childhood. Intervention studies to examine mite allergen levels and the role of underbedding on the development of HDM sensitization are required.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-2222.2003.01642.x
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  • 6
    Electronic Resource
    Electronic Resource
    Meteorological aspects of the numbers and distribution of the rose-grain aphid, Metopolophium dirhodum (Wlk.), over south-east England in July 1979 (1980)
    Oxford, UK : Blackwell Publishing Ltd
    Plant pathology 29 (1980), S. 0 
    Details
    ISSN: 1365-3059
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Exceptionally large numbers (Metopolophium dirhodum were observed i n the air over south-east England, and caught in suction traps, during July 1979. Meteorological data show that these aphids were probably derived from a native population, increasing exponentially at a time when weather, predators and disease did not impose any significant limitation on the rate of increase, and that few, if any, of these aphids were of continental origin.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-3059.1980.tb01131.x
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  • 7
    Electronic Resource
    Electronic Resource
    Electric field effects in superconducting YBa2Cu3O7−x thin films using field-effect transistor structures (1995)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 77 (1995), S. 761-764 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: All-thin-film SrTiO3/YBa2Cu3O7−x/SrTiO3/Cu structures fabricated on sapphire substrates were used to study large electric field effects in YBCO superconducting films. The YBCO films (∼100 nm) were deposited by off-axis radio-frequency sputtering while the top SrTiO3 films (∼200 nm) were reactively vacuum deposited at low temperatures to avoid significant deoxygenation of the superconducting YBCO underlayer films. Cu was used in the field-effect transistor-type YBCO/SrTiO3/Cu multilayered structures as the gate electrode and as Ohmic contacts for the source and drain electrodes. This avoided probable electroforming processes taking place in the SrTiO3 insulating matrices under the large electric fields arising from the applied gate voltages. The YBCO films were polycrystalline with Tc onsets ∼72–82 K. The gate voltages were found to change both the Tc and Tco values and hence the resistivity of the relatively thick superconducting YBCO layers in the normal and superconducting states. © 1995 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.358997
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  • 8
    Electronic Resource
    Electronic Resource
    Study of the magnetic phase transition in La0.7Ca0.3MnO3 using a magneto-optical method (1999)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 74 (1999), S. 3014-3016 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The colossal magnetoresistive material, La0.7Ca0.3MnO3, which has the perovskite structure, has been investigated by means of a magneto-optical method. Analysis of the magnetic field distributions within such a material under applied perpendicular fields clearly showed that the sample was paramagnetic above the Curie transition temperature Tc and ferromagnetic below it. The field distributions were also studied as a function of decreasing temperature through Tc. The results show the microscopic magnetic transition process as the material changes magnetic phase. © 1999 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.123997
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  • 9
    Electronic Resource
    Electronic Resource
    AN APPLICATION OF CLOSE RANGE PHOTOGRAMMETRY IN SHIPBUILDING (1989)
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 13 (1989), S. 0 
    Details
    ISSN: 1477-9730
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying
    Notes: A test was devised to measure the distortion of a ship section during and after a crane lift. As the shipbuilders expend significant man hours and costs in carrying out adjustments to fit ship sections together after lifting, it was hoped that information gained from the test could be used to make design adjustments to ensure a better fit. The test was carried out by BKS Surveys Ltd. and Harland and Wolff Ltd., the Belfast shipbuilders.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1477-9730.1989.tb00646.x
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  • 10
    Electronic Resource
    Electronic Resource
    The Effect of Velocity on the Corrosion of Steel in Sulfuric Acid. (1923)
    s.l. : American Chemical Society
    Industrial & engineering chemistry 15 (1923), S. 672-677 
    Details
    ISSN: 1520-5045
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ie50163a005
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