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  • 1
    Electronic Resource
    Electronic Resource
    Application of mapping closure to non-Gaussian velocity fields (1999)
    [S.l.] : American Institute of Physics (AIP)
    Physics of Fluids 11 (1999), S. 2205-2214 
    Details
    ISSN: 1089-7666
    Source: AIP Digital Archive
    Topics: Physics
    Notes: An attempt is made to assess the mapping closure for turbulent velocity fields with non-Gaussian probability density functions (PDFs). The a priori assumption of the Gaussian velocity statistics is not made in the present mapping closure, which generalizes the results for the Burgers turbulence by Kraichnan [Phys. Rev. Lett. 65, 575 (1990)] and Gotoh and Kraichnan [Phys. Fluids A 5, 445 (1993)]. The PDFs calculated from the mapping closure are compared to the results obtained from the direct numerical simulation for non-Gaussian initial fields. The statistics of second- and higher-order derivative terms are discussed also. © 1999 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.870082
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  • 2
    Electronic Resource
    Electronic Resource
    Reconnection of two vortex rings (1989)
    New York, NY : American Institute of Physics (AIP)
    Physics of Fluids 1 (1989), S. 630-632 
    Details
    ISSN: 1089-7666
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The reconnection of two identical viscous vortex rings is investigated numerically. The initial state consists of two rings (of Re≡Γ/ν=578) of a circular cross section placed side by side in a periodic box with their coplanar axes inclined by 30° to the symmetric plane. The subsequent motion is examined by solving the Navier–Stokes equation by a dealiased pseudospectral method in a 643 box. We found two prominent reconnection processes: first, the two vortex rings merge into one by viscous annihilation of opposite vorticity and second, two new rings, which are connected by two "legs,'' are created by bridging. The apparent differences with laboratory experiments are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.857436
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  • 3
    Electronic Resource
    Electronic Resource
    Bridging in vortex reconnection (1987)
    [S.l.] : American Institute of Physics (AIP)
    Physics of Fluids 30 (1987), S. 2911-2914 
    Details
    ISSN: 1089-7666
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The mechanism of vortex reconnection is investigated by solving the Navier–Stokes equation numerically starting with a closed knotted vortex tube, which gives a nonzero helicity. A new type of vortex reconnection mechanism—bridging—is observed. Small regions of high vorticity bursting out of the vortex tube become larger and bridge different portions of the tube. A relation between the change of the helicity and the mechanism of the vortex reconnection is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.866066
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  • 4
    Electronic Resource
    Electronic Resource
    Formation of head–tail structure in a two-dimensional uniform straining flow (1991)
    New York, NY : American Institute of Physics (AIP)
    Physics of Fluids 3 (1991), S. 2688-2697 
    Details
    ISSN: 1089-7666
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The formation of head–tail structure, which is commonly observed in the interaction of vortex tubes, is investigated by direct numerical simulation of a two-dimensional Navier–Stokes flow. A head–tail structure is created in the course of evolution of the Batchelor dipole in a uniform straining flow. By noting that the Batchelor dipole is steady if there is no external flow and that the dipole is deformed before viscous effect appears, it is concluded that the relative strength of the straining flow plays an important role in the head–tail formation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.858159
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  • 5
    Electronic Resource
    Electronic Resource
    Corrigendum:"Reconnection of two vortex rings'' [Phys. Fluids A 1, 630 (1989)] (1990)
    New York, NY : American Institute of Physics (AIP)
    Physics of Fluids 2 (1990), S. 638-638 
    Details
    ISSN: 1089-7666
    Source: AIP Digital Archive
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.857826
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  • 6
    Electronic Resource
    Electronic Resource
    Vortex Reconnection (1994)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Fluid Mechanics 26 (1994), S. 169-177 
    Details
    ISSN: 0066-4189
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.fl.26.010194.001125
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  • 7
    Electronic Resource
    Electronic Resource
    Species-specific measurement of the second group of Dermatophagoides mite allergens, Der p 2 and Der f 2, using a monoclonal antibody-based ELISA (1996)
    Oxford, UK : Blackwell Publishing Ltd
    Clinical & experimental allergy 26 (1996), S. 0 
    Details
    ISSN: 1365-2222
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Background The group 2 Dermatophagoides mite allergens. Der p 2 and Der f 2, were known to he highly crossreactive, and previous assays to measure Der p 2 and Der f 2 were not species-specific.Objective The aim of this study was to develop a monoclonal antibody-based ELISA (MoAb-ELISA) to specics-spccifically measure Der p 2 and Der f 2.Methods The MoAb-ELISA lor Der p 2 and Der f 2 was performed using species-specific MoAbs for Der p 2 and Der f 2 and a biotinylated second MoAb which recognized a common epitope on both Der p 2 and Der f 2.Rcsuits The assay was highly specics-spccific, reproducible and sensitive. Thirty-two house dust samples were assayed by the MoAb-ELISA for Der p 2 and Der f 2 and by a previously reported radioimmunoassay for Der 2 with rabbit anti-Der 2 antibodies. The summed values for Der p 2 and Der f 2 by the MoAb-ELISA detnonstrated a good correlation with the Der 2 values using the radioimmunoassay (r = 0.978). Furthermore, the proportion of the Der p 2 level in the total Der 2 level (Der p 2 divided by Der p 2 plus Der f 2) correlated well with that of the D. pteronyssinus mite number to the total Dermalophagoides mite number identificd by species (r = 0.970).Conclusion The MoAb-ELISA for Der p 2 and Der f 2, as well as that for Der p 1 and Der f 1, will be useful for the standardization of mite extracts and for the assessments of mite allergen exposure.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2222.1996.tb00076.x
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  • 8
    Electronic Resource
    Electronic Resource
    Patch test results with mite components on convex disc plasters in atopic dermatitis patients (1990)
    Oxford, UK : Blackwell Publishing Ltd
    Contact dermatitis 23 (1990), S. 0 
    Details
    ISSN: 1600-0536
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1600-0536.1990.tb05110.x
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  • 9
    Electronic Resource
    Electronic Resource
    Mite Fauna and Fungal Flora in House Dust from Homes of Asthmatic Children (1979)
    Oxford, UK : Blackwell Publishing Ltd
    Allergy 34 (1979), S. 0 
    Details
    ISSN: 1398-9995
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Mite fauna and fungal flora in the house dust from homes of asthmatic children with positive and negative skin test to house dust allergen and non-asthmatic controls were examined. There was no conspicuous difference in mile species distribution among the three groups. Pyroglyphid mites dominate the mite fauna in house dust more than half of which being Dermatophagoides: D. pteronvssinus and D. farinae. There was no statisucally significant difference in numbers between the two species and either species could dominate depending on the conditions of the individual houses. The average number of acarina in 0.5 g of fine dust did not differ statistically among the three groups; however, mite number per square meter floor differed between patients with positive skin test and negative skin test. The results suggest that house-cleaning might influence the possible sensitization of children. The genetic distribution of mould fungi in house dust was largely similar to that of airborne fungi. The average number of fungal colonies detected in 0.5 g of dust did not differ statistically among the three groups. Wallemia with its minute spores may cause sensitization but has so far been investigated investigated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1398-9995.1979.tb02007.x
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  • 10
    Electronic Resource
    Electronic Resource
    CLINICAL SIGNIFICANCE OF THE HOUSE DUST MITE (DERMATOPHAG01DES PTERONYSSINUS) IN ASTHMATIC CHILDREN IN JAPAN (1976)
    Oxford, UK : Blackwell Publishing Ltd
    Allergy 31 (1976), S. 0 
    Details
    ISSN: 1398-9995
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1398-9995.1976.tb01494.x
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