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  • Cell Line
  • FLUID MECHANICS AND HEAT TRANSFER
  • STRUCTURAL MECHANICS
  • 2005-2009
  • 1995-1999
  • 1990-1994  (5)
  • 1994  (5)
  • 1
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    Ligands for EPH-related receptor tyrosine kinases that require membrane attachment or clustering for activity (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-11-04
    Description: The EPH-related transmembrane tyrosine kinases constitute the largest known family of receptor-like tyrosine kinases, with many members displaying specific patterns of expression in the developing and adult nervous system. A family of cell surface-bound ligands exhibiting distinct, but overlapping, specificities for these EPH-related kinases was identified. These ligands were unable to act as conventional soluble factors. However, they did function when presented in membrane-bound form, suggesting that they require direct cell-to-cell contact to activate their receptors. Membrane attachment may serve to facilitate ligand dimerization or aggregation, because antibody-mediated clustering activated previously inactive soluble forms of these ligands.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Davis, S -- Gale, N W -- Aldrich, T H -- Maisonpierre, P C -- Lhotak, V -- Pawson, T -- Goldfarb, M -- Yancopoulos, G D -- New York, N.Y. -- Science. 1994 Nov 4;266(5186):816-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Regeneron Pharmaceuticals, Tarrytown, NY 10591.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7973638" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Cell Line ; Cell Membrane/*metabolism ; *DNA-Binding Proteins ; Ephrin-A1 ; Ephrin-B1 ; Humans ; Ligands ; Membrane Proteins/chemistry/*metabolism ; Molecular Sequence Data ; Neurons/metabolism ; Phosphorylation ; Proteins/chemistry/*metabolism ; *Proto-Oncogene Proteins ; Receptor Protein-Tyrosine Kinases/*metabolism ; *Receptor, EphA5 ; Recombinant Fusion Proteins/metabolism ; Retroviridae Proteins, Oncogenic/*metabolism ; Solubility ; *Transcription Factors ; Transfection ; Tumor Cells, Cultured ; ets-Domain Protein Elk-1
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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    PAPER CURRENT
  • 2
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    Association and activation of Jak-Tyk kinases by CNTF-LIF-OSM-IL-6 beta receptor components (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-01-07
    Description: A recently defined family of cytokines, consisting of ciliary neurotrophic factor (CNTF), leukemia inhibitory factor (LIF), oncostatin M (OSM), and interleukin-6 (IL-6), utilize the Jak-Tyk family of cytoplasmic tyrosine kinases. The beta receptor components for this cytokine family, gp130 and LIF receptor beta, constitutively associate with Jak-Tyk kinases. Activation of these kinases occurs as a result of ligand-induced dimerization of the receptor beta components. Unlike other cytokine receptors studied to date, the receptors for the CNTF cytokine family utilize all known members of the Jak-Tyk family, but induce distinct patterns of Jak-Tyk phosphorylation in different cell lines.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Stahl, N -- Boulton, T G -- Farruggella, T -- Ip, N Y -- Davis, S -- Witthuhn, B A -- Quelle, F W -- Silvennoinen, O -- Barbieri, G -- Pellegrini, S -- P30 CA21765/CA/NCI NIH HHS/ -- R01 DK42932/DK/NIDDK NIH HHS/ -- New York, N.Y. -- Science. 1994 Jan 7;263(5143):92-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Regeneron Pharmaceuticals, Inc., Tarrytown, NY 10591.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8272873" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Antigens, CD ; Cell Line ; Ciliary Neurotrophic Factor ; Cytokine Receptor gp130 ; Cytokines/metabolism/*pharmacology ; Enzyme Activation ; *Growth Inhibitors ; *Interleukin-6 ; Janus Kinase 1 ; Janus Kinase 2 ; Leukemia Inhibitory Factor ; *Lymphokines ; Membrane Glycoproteins/*metabolism ; Nerve Tissue Proteins/metabolism/pharmacology ; Oncostatin M ; Peptides/metabolism/pharmacology ; Phosphorylation ; Protein-Tyrosine Kinases/*metabolism ; Proteins/metabolism ; *Proto-Oncogene Proteins ; Receptor, Ciliary Neurotrophic Factor ; Receptors, Cytokine/*metabolism ; Receptors, Growth Factor/metabolism ; Receptors, Interleukin/metabolism ; Receptors, Interleukin-6 ; Receptors, OSM-LIF ; Receptors, Oncostatin M ; Tyrosine/metabolism
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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    PAPER CURRENT
  • 3
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    Influence of cross-flow on nonlinear Tollmien-Schlichting/vortex interaction (1994)
    In:  Other Sources
    Details
    Publication Date: 2011-08-24
    Description: The transition of an incompressible three-dimensional boundary layer with strong cross-flow is considered theoretically and computationally in the context of vortex/wave interactions. Specifically the work centers on two lower-branch Tollmien-Schlichting waves which mutually interact nonlinearly to induce a longitudinal vortex flow. The vortex motion in turn gives rise to significant wave modulation via wall-shear forcing. The characteristic Reynolds number is large and, as a consequence, the waves' and the vortex motion are governed primarily by triple deck theory. The nonlinear interaction is captured by a viscous partial-differential system for the vortex coupled with a pair of amplitude equations for each wave pressure. Following analysis and computation over a wide range of parameters, three distinct responses are found to emerge in the nonlinear behavior of the flow solution downstream: an algebraic finite-distance singularity, far-downstream saturation or far-downstream wave decay leaving pure vortex flow. These depend on the input conditions, the wave angles and the size of the cross flow.
    Keywords: FLUID MECHANICS AND HEAT TRANSFER
    Type: Royal Society (London) Proceedings, Series A - Mathematical and Physical Sciences (ISSN 0962-8444); 446; 1927; p. 319-340
    Format: text
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    NASA TECHNICAL REPORTS
  • 4
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    Conceptual design and analysis of a dynamic scale model of the Space Station Freedom (1994)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: This report documents the conceptual design study performed to evaluate design options for a subscale dynamic test model which could be used to investigate the expected on-orbit structural dynamic characteristics of the Space Station Freedom early build configurations. The baseline option was a 'near-replica' model of the SSF SC-7 pre-integrated truss configuration. The approach used to develop conceptual design options involved three sets of studies: evaluation of the full-scale design and analysis databases, conducting scale factor trade studies, and performing design sensitivity studies. The scale factor trade study was conducted to develop a fundamental understanding of the key scaling parameters that drive design, performance and cost of a SSF dynamic scale model. Four scale model options were estimated: 1/4, 1/5, 1/7, and 1/10 scale. Prototype hardware was fabricated to assess producibility issues. Based on the results of the study, a 1/4-scale size is recommended based on the increased model fidelity associated with a larger scale factor. A design sensitivity study was performed to identify critical hardware component properties that drive dynamic performance. A total of 118 component properties were identified which require high-fidelity replication. Lower fidelity dynamic similarity scaling can be used for non-critical components.
    Keywords: STRUCTURAL MECHANICS
    Type: NASA-CR-4598 , NAS 1.26:4598 , LMSC/F440397
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 5
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    Phase segregation due to simultaneous migration and coalescence (1994)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: Ground-based modeling and experiments have been performed on the interaction and coalescence of drops leading to macroscopic phase separation. The focus has been on gravity-induced motion, with research also initiated on thermocapillary motion of drops. The drop size distribution initially shifts toward larger drops with time due to coalescence, and then a back towards smaller drops due to the larger preferentially settling out. As a consequence, the phase separation rate initially increases with time and then decreases.
    Keywords: FLUID MECHANICS AND HEAT TRANSFER
    Type: NASA. Lewis Research Center, Second Microgravity Fluid Physics Conference; p 101-106
    Format: application/pdf
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    NASA TECHNICAL REPORTS
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