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  • 1
    Electronic Resource
    Electronic Resource
    Modeling Flow and Heat Transfer During Freezing of Foods in Forced Airstreams (2004)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 69 (2004), S. 0 
    Details
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: : Mathematical modeling of food freezing has been limited to the modeling of the internal heat transfer where the external convective heat-transfer coefficients are assumed or empirically estimated. Previous procedures followed to solve the external boundary layer in tandem with the internal heat transfer were constrained by numerical complexities due to the transient nature of the heat transfer, requiring unsteady formulation for the flow. In this article, attempts have been made to decouple the flow and heat transfer equations for the external boundary layer flow over a food product being frozen. The flow equations have been solved as a steady-state problem using Falker-Skan transformations of the boundary layer equation. The heat-transfer equation for fluid flow is solved as an unsteady-state problem in conjunction with the internal heat transfer and phase change inside the product undergoing freezing. The model is validated for a case of air-impingement freezing.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.2004.tb09934.x
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  • 2
    Electronic Resource
    Electronic Resource
    Spatial Variation of Convective Heat Transfer Coefficient in Air Impingement Applications (2003)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 68 (2003), S. 0 
    Details
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Spatial variation of heat transfer is an important factor in air impingement systems. Temperature data were obtained when a jet at room temperature impinged on a flat object initially at −50 °C to estimate heat transfer under freeze-thaw conditions. Single and double circular jets and slot jets were examined. Temperature data were fit into empirical relationships for predicting heat transfer coefficients and their spatial variation for conditions common in impingement freeze-thaw applications. For processing conditions involving cooling, the impingement surface was initially heated to a temperature of 70 °C and allowed to cool when subjected to impingement with room temperature air.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.2003.tb08264.x
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Rotational bands in the doubly odd 130Cs nucleus (2001)
    Springer
    The European physical journal 11 (2001), S. 5-8 
    Details
    ISSN: 1434-601X
    Keywords: PACS. 21.10.Re Collective levels – 23.20.Lv γ transitions and level energies – 21.60.-n Nuclear-structure models and methods – 27.60.+j 90 ?A? 149
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: The band structures built on the 5- isomeric state ( T 1/2 = 3.46 m) in the doubly odd 130Cs nucleus have been established up to I = 24? via the 124Sn(11B, 5n)130Cs reaction. The previously observed bands based on the πh 11/2⊗νh 11/2, πg 7/2⊗νh 11/2 and πd 5/2⊗νh 11/2 configurations and a positive-parity side band with multiple connections to the α = 0 signature partner of the yrast πh 11/2⊗νh 11/2 band have been extended to higher spins. A new band based on the πh 11/2⊗νg 7/2 configuration is observed. The yrast πh 11/2⊗νh 11/2 band exhibits anomalous signature splitting whose magnitude decreases up to spin 15 and then increases without restoring the normal signature splitting.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s100500170090
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  • 4
    Electronic Resource
    Electronic Resource
    Level structure of 99Rh at high spins (2000)
    Springer
    The European physical journal 7 (2000), S. 35-40 
    Details
    ISSN: 1434-601X
    Keywords: PACS: 21.10.Re Collective levels – 21.60.Cs Shell model – 23.20.Lv Gamma transitions and level energies – 27.60.+j 90 ≤ A ≤ 149
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: High spins states in 99Rh were populated via the 66Zn(37Cl, 2p2n)99Rh reaction at an incident beam energy of 130 MeV. Seventeen new transitions have been observed in the present study and the level scheme has now been extended up to a spin of J∼ 25ħ and an excitation energy of about E x∼ 10 MeV. The observation of a positive parity E2 cascade based on the 9/2+ isomeric level is suggestive of collective behaviour in this nucleus up to high spins. Spherical shell model (within restricted model space) and Cranked shell model calculations were performed to obtain an insight into the observed level structure. The new collective band observed up to a spin of J∼ 25ħ is suggested to be based on (πg 9/2 3) ⊗ (νg 7/2 2) quasi-particle excitations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s100500050007
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  • 5
    Electronic Resource
    Electronic Resource
    Level structure of odd-odd 68Ga (2000)
    Springer
    The European physical journal 9 (2000), S. 197-200 
    Details
    ISSN: 1434-601X
    Keywords: PACS. 27.50.+e 59 ≤A≤ 89 – 23.20.Lv Gamma transitions and level energies – 23.20.En Angular distribution and correlation measurements
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: Excited states of 68Ga have been investigated through the 55Mn(16O, 2pn) reaction at projectile energy 55 MeV. The level scheme has been extended up to 7.8 MeV. Altogether six new excited levels could be identified and twelve previously unobserved γ-transitions have been placed in the modified level scheme.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s100500070037
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    Paper (German National Licenses)
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