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  • FLUID MECHANICS AND HEAT TRANSFER  (3)
  • Hemocytes  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Encapsulation of implanted foreign bodies by hemocytes in Locusta migratoria and Melolontha melolontha (1975)
    Springer
    Cell & tissue research 160 (1975), S. 283-289 
    Details
    ISSN: 1432-0878
    Keywords: Insect ; Hemocytes ; Capsules
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Sterile fragments of cellophane, cat-gut, cotton, or beef muscle implanted into the body cavity of Locusta migratoria and Melolontha melolontha are immediately surrounded by granular hemocytes which form a multi-layered capsule around each foreign body. The cytoplasm of the granular hemocytes of the outer zone of the capsule in both species shows an accumulation of fibrous material (microtubules and microfilaments). None of the implanted material appeared to be degraded.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00222040
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    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Role of the “thrombocytoids” in capsule formation in the dipteran Calliphora erythrocephala (1975)
    Springer
    Cell & tissue research 162 (1975), S. 343-348 
    Details
    ISSN: 1432-0878
    Keywords: Insects ; Hemocytes ; Capsules
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Of the three hemocyte types present in the blood of Calliphora, only one participates in capsule formation around implanted cellophane. This hemocyte, the thrombocytoid, shows in the blood a tendency to dissociate into numerous small cytoplasmic fragments, comparable to the mammalian megakaryocyte. This tendency is dramatically increased during the process of encapsulation. Most of the intact thrombocytoids and the numerous fragments participating in capsule formation do not show any particular modifications in their cytoplasm during this process, which corresponds to a mere sequestration of the implant. Dense material, resulting from necrotic cell debris and hemolymph lipoproteins, is often observed between the cellophane and encapsulating thrombocytoids, which apparently participate in the resorption of this material.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00220180
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    Paper (German National Licenses)
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  • 3
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    Unknown
    The influence of free-stream turbulence on turbulent boundary layers with mild adverse pressure gradients (1989)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: The influence of near isotropic free-stream turbulence on the shape factors and skin friction coefficients of turbulent boundary layers is presented for the cases of zero and mild adverse pressure gradients. With free-stream turbulence, improved fluid mixing occurs in boundary layers with adverse pressure gradients relative to the zero pressure gradient condition, with the same free-stream turbulence intensity and length scale. Stronger boundary layers with lower shape factors occur as a result of a lower ratio of the integral scale of turbulence to the boundary layer thickness, and to vortex stretching of the turbulent eddies in the free-stream, both of which act to improve the transmission of momentum from the free-stream to the boundary layers.
    Keywords: FLUID MECHANICS AND HEAT TRANSFER
    Type: NASA-CR-177520 , NAS 1.26:177520
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 4
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    Effects of free-stream turbulence on turbulent boundary layers with mild adverse pressure gradients (1988)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: The influence of near isotropic free-stream turbulence on the shape factors and skin friction coefficients of turbulent boundary layers is presented for the cases of zero and mild adverse pressure gradients. With free-stream turbulence, improved fluid mixing occurs in boundary layers with adverse pressure gradients relative to the zero pressure gradient condition, with the same free-stream turbulence intensity and length scale. Stronger boundary layers with lower shape factors occur as a result of a lower ratio of the integral scale of turbulence to the boundary layer thickness, and to vortex stretching of the turbulent eddies in the free-stream, both of which act to improve the transmission of momentum from the free-stream to the boundary layers.
    Keywords: FLUID MECHANICS AND HEAT TRANSFER
    Type: AIAA PAPER 88-3757 , AIAA, ASME, SIAM, and APS, National Fluid Dynamics Congress; Jul 25, 1988 - Jul 28, 1988; Cincinnati, OH; United States
    Format: text
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    NASA TECHNICAL REPORTS
  • 5
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    Flow direction measurement criteria and techniques planned for the 40- by 80-/80- x 120-foot wind tunnel integrated systems tests (1985)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: A study was performed in order to develop the criteria for the selection of flow direction indicators for use in the Integrated Systems Tests (ISTs) of the 40 by 80/80 by 120 Foot Wind Tunnel System. The problems, requirements, and limitations of flow direction measurement in the wind tunnel were investigated. The locations and types of flow direction measurements planned in the facility were discussed. A review of current methods of flow direction measurement was made and the most suitable technique for each location was chosen. A flow direction vane for each location was chosen. A flow direction vane that employs a Hall Effect Transducer was then developed and evaluated for application during the ISTs.
    Keywords: FLUID MECHANICS AND HEAT TRANSFER
    Type: NASA-CR-176969 , NAS 1.26:176969
    Format: application/pdf
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    NASA TECHNICAL REPORTS
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