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  • Earth Resources and Remote Sensing  (4)
  • MECHANICAL ENGINEERING  (4)
  • Nuclear Reactions  (3)
  • Phosphatidylcholine  (3)
  • 1
    Electronic Resource
    Electronic Resource
    The influence of acyl chain-length asymmetry on the phase transition parameters of phosphatidylcholine dispersions
    Amsterdam : Elsevier
    Biochimica et Biophysica Acta (BBA)/Biomembranes 1067 (1991), S. 17-28 
    Details
    ISSN: 0005-2736
    Keywords: DSC ; Mixed interdigitated bilayer ; Mixed-chain phosphatidylcholine ; Phase transition ; Phosphatidylcholine
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Medicine , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/0005-2736(91)90021-Y
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Interconversion of bilayer phase transition temperatures between phosphatidylethanolamines and phosphatidylcholines
    Amsterdam : Elsevier
    Biochimica et Biophysica Acta (BBA)/Biomembranes 1189 (1994), S. 7-12 
    Details
    ISSN: 0005-2736
    Keywords: DSC ; Phase transition temperature ; Phosphatidylcholine ; Phosphatidylethanolamine
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Medicine , Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0005-2736(94)90273-9
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  • 3
    Electronic Resource
    Electronic Resource
    Calorimetric studies of fully hydrated phosphatidylcholines with highly asymmetric acyl chains
    Amsterdam : Elsevier
    Biochimica et Biophysica Acta (BBA)/Biomembranes 1145 (1993), S. 298-310 
    Details
    ISSN: 0005-2736
    Keywords: Asymmetric mixed-chain phosphatidylcholine ; DSC ; Mixed interdigitated bilayer ; Phase transition behavior ; Phosphatidylcholine
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Medicine , Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0005-2736(93)90303-H
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  • 4
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    Energy dependence of phenomenological optical model potentials for the ^{7}Li+^{11}B reaction (2013)
    American Physical Society (APS)
    Details
    Publication Date: 2013-04-11
    Description: Author(s): L. Yang, C. J. Lin, H. M. Jia, X. X. Xu, F. Yang, H. Q. Zhang, Z. H. Liu, P. F. Bao, and L. J. Sun Angular distributions of 7 Li+ 11 B elastic scattering were measured at E lab ( 7 Li)=9.85, 13.3, 18.3, 23.3, and 28.3 MeV within the angular range of θ c.m. ≈15 ∘ –80 ∘ . Optical model potentials have been extracted from these angular distributions and the data available in the literature at E lab ( 7 Li)=34 MeV an... [Phys. Rev. C 87, 047601] Published Wed Apr 10, 2013
    Keywords: Nuclear Reactions
    Print ISSN: 0556-2813
    Electronic ISSN: 1089-490X
    Topics: Physics
    Published by American Physical Society (APS)
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    PAPER CURRENT
  • 5
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    Optical model potentials for the 6He+209Bi reaction from a Pb208(Li7,He6)Bi209 reaction analysis (2014)
    American Physical Society (APS)
    Details
    Publication Date: 2014-04-29
    Description: Author(s): L. Yang, C. J. Lin, H. M. Jia, F. Yang, Z. D. Wu, X. X. Xu, H. Q. Zhang, Z. H. Liu, P. F. Bao, L. J. Sun, and N. R. Ma Angular distributions of the Pb208(Li7,He6)Bi209 reactions with one-proton transferred to the ground, first-excited, and second-excited states of Bi209 were measured at Elab=25.67, 28.55, 32.55, 37.55, and 42.55 MeV. The experimental data and the data available in the literature at Elab=52 MeV were ... [Phys. Rev. C 89, 044615] Published Mon Apr 28, 2014
    Keywords: Nuclear Reactions
    Print ISSN: 0556-2813
    Electronic ISSN: 1089-490X
    Topics: Physics
    Published by American Physical Society (APS)
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  • 6
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    Optical model potentials for ^{6} He+ ^{64} Zn from ^{63} Cu( ^{7} Li, ^{6} He) ^{64} Zn reactions (2017)
    American Physical Society (APS)
    Details
    Publication Date: 2017-03-31
    Description: Author(s): L. Yang, C. J. Lin, H. M. Jia, D. X. Wang, L. J. Sun, N. R. Ma, F. Yang, Z. D. Wu, X. X. Xu, H. Q. Zhang, Z. H. Liu, and P. F. Bao Angular distributions of the transfer reaction Cu 63 ( Li 7 , He 6 ) Zn 64 were measured at E lab ( Li 7 ) = 12.67 , 15.21, 16.33, 23.30, 27.30, and 30.96 MeV. With the interaction potentials of the entrance channel Li 7 + Cu 63 obtained from elastic scattering data as input, the optical potentials of the halo nuclear sy… [Phys. Rev. C 95, 034616] Published Thu Mar 30, 2017
    Keywords: Nuclear Reactions
    Print ISSN: 0556-2813
    Electronic ISSN: 1089-490X
    Topics: Physics
    Published by American Physical Society (APS)
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  • 7
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    CERES and the S'COOL Project (1997)
    In:  CASI
    Details
    Publication Date: 2004-12-03
    Description: The first Clouds and the Earth's Radiant Energy System (CERES) instrument will be launched on the Tropical Rainfall Measuring Mission (TRMM) spacecraft from a Japanese launch site in November 1997. This instrument is a follow-on to the Earth Radiation Budget Experiment (ERBE) begun in the 1980's. The instrument will measure the radiation budget - incoming and outgoing radiant energy - of the Earth. It will establish a baseline and look for climatic trends. The major feature of interest is clouds, which play a very strong role in regulating our climate. CERES will identify clear and cloudy regions and determine cloud physical and microphysical properties using imager data from a companion instrument. Validation efforts for the remote sensing algorithms will be intensive. As one component of the validation, the S'COOL (Students' Cloud Observations On-Line) project will involve school children from around the globe in making ground truth measurements at the time of a CERES overpass. Their observations will be collected at the NASA Langley Distributed Active Archive Center (DAAC) and made available over the Internet for educational purposes as well as for use by the CERES Science Team in validation efforts. Pilot testing of the S'COOL project began in January 1997 with two local schools in Southeastern Virginia and one remote site in Montana. This experience is helping guide the development of the S'COOL project. National testing is planned for April 1997, international testing for July 1997, and global testing for October 1997. In 1998, when the CERES instrument is operational, a global observer network should be in place providing useful information to the scientists and learning opportunities to the students.
    Keywords: Earth Resources and Remote Sensing
    Type: The Sixth Alumni Conference of the International Space University; 150-157; NASA-CP-3355
    Format: text
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    NASA TECHNICAL REPORTS
  • 8
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    Computation of the Effects of Inhomogeneous Clouds on Retrieval of Remotely Sensed Properties (1998)
    In:  CASI
    Details
    Publication Date: 2018-06-02
    Description: Current and future earth observation programs depend on satellite measurements of radiance to retrieve the properties of clouds on a global basis. At present, this retrieval is made assuming that the clouds in the instrument field of view are plane parallel and independent of adjacent pixels. While this assumption is known to be false except in very limited cases, its impact can be evaluated, and if possible corrected, based on emerging theoretical techniques. In this study, the Spherical Harmonic Discrete Ordinate Method (SHDOM, Evans, 1996) has been used to assess the sensitivity of the retrieval to a variety of cloud parameters. SHDOM allows the plane parallel assumption to be relaxed and makes 2D and even 3D radiative solutions practical. A previous study (Chambers et al., 1996) assessed the effect of horizontal inhomogeneity in 45 LANDSAT scenes of boundary layer clouds over ocean. The four scenes studied here represent overcast, broken, scattered and strongly thermally forced cloud fields and are used to perform sensitivity studies to a wider variety of parameters. Comparisons are made at three solar zenith angles (theta (sub 0) = 0, 49, and 63 degrees) to avoid ambiguity in the results due to solar zenith angle.
    Keywords: Earth Resources and Remote Sensing
    Format: text
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    NASA TECHNICAL REPORTS
  • 9
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    Dynamic loading on parallel shaft gears (1986)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: A computer-based analysis of the dynamic effects of spur gear systems is presented. The method of analysis with its associated computer code is capable of determining the dynamic response of spur gear systems having involute tooth profiles and standard contact ratios. Various parameters affecting the system dynamic behavior are examined. Numerical results of the analysis are compared with semi-empirical formulae, AGMA (American Gear Manufacturers Association) formulae, and experimental data. A close correlation with the experimental data is obtained.
    Keywords: MECHANICAL ENGINEERING
    Type: NASA-CR-179473 , NAS 1.26:179473 , UC-MIE-051586-19
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 10
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    Dynamic analysis of straight and involute tooth forms (1984)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: The effect of load speed on straight and involute tooth forms is studied using several finite-element models. It is found that for rapidly rotating gears and sprockets, the load speed along the tooth surface can significantly affect the tooth vibration. Indeed, it is found that for sufficiently high load speeds and for sufficiently slender tooth forms, the tooth deflection can, at times, be directed opposite to the load direction. Comparisons are made of various dynamic models of gear and sprocket teeth. It is shown that for stubby tooth forms there is considerable difference between results obtained with finite element models and results obtained with Timoshenko beam models. Finally, it is shown that gear or sprocket vibrations can be induced by the shape of the tooth form itself. This effect becomes increasingly significant at higher speeds.
    Keywords: MECHANICAL ENGINEERING
    Type: ASME PAPER 84-DET-226
    Format: text
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