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  • Elsevier  (26)
  • Blackwell Publishing Ltd  (5)
  • American Institute of Physics (AIP)  (3)
  • Nature Publishing Group
  • 2000-2004  (21)
  • 1990-1994  (14)
  • 1
    Electronic Resource
    Electronic Resource
    A falling head permeameter for the measurement of the hydraulic conductivity of granular solids (2000)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 71 (2000), S. 3942-3946 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: A falling head permeameter is described in which pairs of infrared emitters and detectors on a sight tube are used to measure the flow rate associated with the passage of water through a granular solid under the action of a diminishing pressure head. An equation relating pressure head to elapsed time is derived from which permeability may be calculated. In order to verify the accuracy and sensitivity of the instrument, permeability measurements carried out on a graded quartz sand are compared to those obtained by the more conventional constant head measurement. Excellent agreement is obtained between the permeability values obtained using both measurement methods. Experimental results are also reported for the measurement of the permeability of a range of sieved sand fractions. The falling head permeameter described here is particularly suitable for the measurement of the hydraulic conductivity of granular solids such as sands and soils through which a high flow rate may be expected. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1310349
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  • 2
    Electronic Resource
    Electronic Resource
    Interface processing in multilayer films : The 6th joint magnetism and magnetic materials (MMM)-intermag conference (1994)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 76 (1994), S. 6090-6092 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We have investigated the effect of ion modification of multilayer growth and ion etching of multilayer interfaces on perpendicular anisotropy and giant magnetoresistance in sputter deposited Co/Pt and Co/Cu multilayers. These two properties are thought to be particularly sensitive to the form of the interface profile in multilayers. We find that the ion-assisted deposition conditions used degrade both perpendicular anisotropy and GMR through interface smoothing and mixing. In contrast, thermal annealing and first experiments in ion etching show that GMR can be increased by smoothing of the Co/Cu interfaces.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.358380
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  • 3
    Electronic Resource
    Electronic Resource
    Interpretation of photoluminescence excitation spectroscopy of porous Si layers (1993)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 62 (1993), S. 1113-1115 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Photoluminescence excitation (PLE) measurements allow one to obtain direct information on the absorption processes in porous Si leading to the strong visible luminescence which has recently been reported. This technique does not need a free-standing porous Si sample, but the effect of layer thickness should be included in the interpretation of PLE data. In our PLE spectra, two separate absorption edges are observed and the initial one shifts to higher energies with storage time. The trends of these changes are consistent with the quantum wire model.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.108759
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  • 4
    Electronic Resource
    Electronic Resource
    Biological control of fire blight of hawthorn (Crataegus monogyna) with Erwinia herbicola under protected conditions (1990)
    Oxford, UK : Blackwell Publishing Ltd
    Plant pathology 39 (1990), S. 0 
    Details
    ISSN: 1365-3059
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Isolates of Erwinia herbicola, obtained from flowers and leaves of hawthorn (Crataegus monogyna), were screened as potential control agents of fire blight disease (caused by Erwinia amylovora) using an immature pear fruit assay. Selected isolates were subsequently tested for disease control by infection of hawthorn blossom in the laboratory, and by shoot infection of hawthorn plants grown under controlled (glasshouse) and fluctuating (polythene tunnel) environmental conditions.Although the immature pear fruit assay provided a general screen for the selection of antagonists for the control of both blossom and shoot blight, it had two major limitations when quantitatively applied. Firstly there were inconsistencies in the relative effects of different isolates on the pear-slice surface, with some isolates being more suppressive than the standard antagonist Eh252 in the first screening and less in the second. Secondly the assay was not able to predict accurately the level of control in the intact plant-as no correlation occurred between the level of control in the pear fruit assay and the percentage control of either blossom blight or shoot blight.Two isolates of E. herbicola, WL9 and WL40, reduced both blossom- and shoot-blight. WL9 provided over 80% control of blossom blight, equivalent to that provided by chemical agents, and also gave total control of shoot blight when applied at a WL9: pathogen ratio of 10:1.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-3059.1990.tb02507.x
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  • 5
    Electronic Resource
    Electronic Resource
    Residence time of the sea louse, Lepeophtheirus salmonis K., on Atlantic salmon, Salmo salar L., after immersion in fresh water (1990)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of fish biology 37 (1990), S. 0 
    Details
    ISSN: 1095-8649
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Returning adult salmon caught at the mouth of the River Dee, Aberdeenshire, were transferred to tanks in the laboratory. For fish placed in fresh water, sea lice remained attached for up to 6 days, though most lice were lost in the first 48 hours. Few lice were lost from salmon maintained in sea water. The experiments were conducted in water within a temperature range of 12·8 to 16° C, equivalent to summer river temperatures in the Aberdeenshire Dee.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1095-8649.1990.tb05861.x
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  • 6
    Electronic Resource
    Electronic Resource
    In vitro modeling of dental water line contamination and decontamination (2004)
    Oxford, UK : Blackwell Publishing Ltd
    FEMS microbiology letters 235 (2004), S. 0 
    Details
    ISSN: 1574-6968
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: The contamination of dental unit water lines (DUWL) is an emerging concern in dentistry. The aim of this study was to use an in vitro DUWL to model microbial contamination and evaluate the decontamination efficacy of tetraacetylethylenediamine (TAED) solutions. A DUWL biofilm model used to simulate clinical conditions was used to generate a range of biofilms in DUWL. Three distinct biofilms were generated: (1) biofilm from water, (2) biofilm from a mix of water + contaminating human commensal bacteria, (3) biofilm from water with contaminating oral bacteria added after biofilm formed. The contaminating oral species used were Streptococcus oralis, Enterococcus faecalis and Staphylococcus aureus. Decontamination by simple water flushing or flushing with TAED was evaluated (2, 5 and 10 min intervals). The DUWL tubes were split and samples were plated onto a range of media, incubated and bacteria enumerated. Water flushing did not reduce the number of microorganisms detected. Bacteria were not detected from any of the TAED sampling points for any of the biofilm types tested. Interestingly, if contamination was introduced to new DUWL along with the waterborne species a biofilm was formed containing only the waterborne species. If however, an existing biofilm was present before the introduction of “contaminating” bacteria then these could be detected in the biofilm. This implies that if the DUWL are new or satisfactorily cleaned on a regular basis then the associated cross-contamination aspects are reduced. In conclusion, TAED provides effective control for DUWL biofilms.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1574-6968.2004.tb09611.x
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  • 7
    Electronic Resource
    Electronic Resource
    AN ADDITIONAL FAMILY OF VH SEQUENCES IN THE CHANNEL CATFISH (1991)
    Oxford, UK : Blackwell Publishing Ltd
    International journal of immunogenetics 18 (1991), S. 0 
    Details
    ISSN: 1744-313X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology , Medicine
    Notes: A heavy chain variable region cDNA sequence of the channel catfish (Ictalurus punctatus) prototypical for a new VH family (approximately 20 or more members) is presented. The nucleotide and inferred amino acid sequences differ by 32–52% and 41–68%, respectively, from those for the already described catfish VH families.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1744-313X.1991.tb00038.x
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  • 8
    Electronic Resource
    Electronic Resource
    Biological activities of surface-associated material from Porphyromonas gingivalis (1993)
    Oxford, UK : Blackwell Publishing Ltd
    FEMS immunology and medical microbiology 6 (1993), S. 0 
    Details
    ISSN: 1574-695X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology , Medicine
    Notes: Abstract Surface-associated material (SAM) from Porphyromonas gingivalis was tested for in vitro biological activities that may be relevant to the pathogenesis of chronic periodontitis. SAM was found to stimulate bone resorption at a concentration of 1.0 μg/ml and this was inhibited by indomethacin, interleukin-1 receptor antagonist protein and anti-tumour necrosis factor antibody. At a concentration of 10 ng/ml, the SAM inhibited DNA and collagen synthesis in osteoblasts and murine calvaria and DNA synthesis in fibroblasts, monocytes and epidermal cells. Therefore, easily solubilised surface components from P. gingivalis could play a role in the pathogenesis of chronic periodontitis if these activities operate in vivo.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1574-695X.1993.tb00317.x
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  • 9
    Electronic Resource
    Electronic Resource
    C 60 separation on coal (1992)
    [s.l.] : Nature Publishing Group
    Nature 355 (1992), S. 117-118 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SIR-We reported recently1 that coal could be used as a source material to produce a crude fullerene mixture consisting of 90% C60, 10% C70 and trace amounts of other fullerenes. The separation of such a mixture into its components is an arduous task, usually carried out by chromatography on ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/355117b0
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  • 10
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    Erratum to: Sensor performance of the BaBar Silicon Vertex Tracker after 4 years of data taking (2004)
    Elsevier
    Details
    Publication Date: 2004-05-01
    Print ISSN: 0168-9002
    Electronic ISSN: 1872-9576
    Topics: Physics
    Published by Elsevier
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