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  • 1
    Electronic Resource
    Electronic Resource
    Measurement of β-hydroxybutyrate in acute hyperketonemia in human brain (2001)
    Oxford, UK : Blackwell Science Ltd
    Journal of neurochemistry 79 (2001), S. 0 
    Details
    ISSN: 1471-4159
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: We report the measurement of d-β-hydroxybutyrate (BHB) in the brains of six normal adult subjects during acute infusions of BHB. We used high field in vivo1H magnetic resonance (MR) spectroscopy in the occipital lobe in conjunction with an acute infusion protocol to elevate plasma BHB levels from overnight fasted levels (0.20 ± 0.10 mm) to a steady state value of 2.12 ± 0.30 mm. At this level of hyperketonemia, we determined a tissue BHB level of 0.24 ± 0.04 mm. No increases in brain lactate levels were seen in these data. The concentrations of BHB and lactate were both considerably lower in comparison with previous data acquired in fasted adult subjects. This suggests that up-regulation of the monocarboxylic acid transporter occurs with fasting.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1471-4159.2001.00575.x
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  • 2
    Electronic Resource
    Electronic Resource
    A thermodynamic model of the lamellar to inverse hexagonal phase transition of lipid membrane-water systems (1984)
    s.l. : American Chemical Society
    Biochemistry 23 (1984), S. 1093-1102 
    Details
    ISSN: 1520-4995
    Source: ACS Legacy Archives
    Topics: Biology , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/bi00301a009
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    The effect of C13O162 on the performance of a sealed-off pulsed CO2 laser (1988)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 63 (1988), S. 2861-2864 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A sealed-off rf-excited CO2 waveguide laser was used to investigate the relative performance with C13O2 and C12O2 mixtures. By modulating the laser at various rates and pulse widths, we demonstrated effects due to both temperature and upper level relaxation rates. In addition, replacing N142 with N152 was shown to improve the performance of C13O2.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.340941
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  • 4
    Electronic Resource
    Electronic Resource
    The effect of He3 on CO2 laser power (1986)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 59 (1986), S. 268-269 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Substitution of He3 for normal helium in a sealed-off conventional CO2 laser resulted in power output increases as high as 14%. No such effect was observed in a narrow-bore waveguide laser, indicating that the observed improvements were due to more efficient heat conduction to the tube wall.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.336876
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  • 5
    Electronic Resource
    Electronic Resource
    New high-temperature rotational rheometer for silicate melts, magmatic suspensions, and emulsions (1998)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 69 (1998), S. 3398-3402 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: A new wide-annulus Couette-type viscometer/rheometer has been designed, fabricated, and tested with the objective of measuring the shear flow properties of silicate melts and magmatic suspensions containing vapor bubbles and/or solid particles at 10−4 GPa and temperatures from 600 to 1500 °C. The goal of this development has been to advance the precision of high-temperature multiphase silicate rheometry in the viscosity regime of 104–1010 Pa s, and to attempt experiments on multiphase magmatic mixtures that have heretofore been difficult to perform in the concentric cylinder geometry. With this instrument, fluids with viscosities in the design viscosity range may be tested at shear rates from 10−5 to 1 s−1, employing a series of interchangeable torque transducers capable of measurements from 0.003 to 3 N m, preserving precision of the stress measurement across the entire dynamic span. A microprocessor-controlled motor drive enables precisely specified rotational motions (position and/or speed of the sample container) for accurate constant-shear-rate or finite-strain experiments. Use of high-purity cast ceramic components rather than platinum alloy for the rotating sample container (cup) and fixed cylindrical bob permit sectioning of the sample following an experiment to inspect and analyze textural characteristics of the magmatic suspensions. Computerized data acquisition is accomplished via a standard microcomputer interface and commercially available software system that allows data to be recorded, visualized, and statistically modeled as an experiment progresses. The instrument has been tested using NIST (NBS) reference material 717 (a borosilicate glass) at viscosities from 104 to 109 Pa s. Value of the standard viscosity has been recovered within the published precision (0.03 log units) at temperatures between 650 and 850 °C. © 1998 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1149106
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  • 6
    Electronic Resource
    Electronic Resource
    Piezoelectric Q switching of a CO2 laser (1987)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 58 (1987), S. 128-130 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: Reactive Q switching of a CO2 laser by means of a piezoelectrically actuated end reflector is reported. The high-frequency response of the piezoelectric transducer was maintained by optically polishing the transducer's surface directly instead of employing a separate mirror. Submicrosecond pulses at rates in excess of 100 kHz were obtained. This technique is especially appropriate for generating high pulse rates in low-power lasers, as no lossy intracavity elements are required.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1139556
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  • 7
    Electronic Resource
    Electronic Resource
    Reaction–diffusion description of biological transport processes in general dimension (1996)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 104 (1996), S. 1918-1936 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: We introduce a reaction–diffusion system capable of modeling ligand migration inside of proteins as well as conformational fluctuations of proteins, and present a detailed analytical and numerical analysis of this system in general dimension. The main observable, the probability of finding the system in the starting state, exhibits dimension-dependent as well as dimension-independent properties, allowing for sharp experimental tests of the effective dimension of the process in question. We discuss the application of this theory to ligand migration in myoglobin and to the description of gating fluctuations of ion channel proteins. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.471810
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  • 8
    Electronic Resource
    Electronic Resource
    Auger Spectroscopy (1981)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Materials Research 11 (1981), S. 485-504 
    Details
    ISSN: 0084-6600
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.ms.11.080181.002413
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  • 9
    Electronic Resource
    Electronic Resource
    Reversible Temper Embrittlement (1977)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Materials Research 7 (1977), S. 123-153 
    Details
    ISSN: 0084-6600
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.ms.07.080177.001011
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  • 10
    Electronic Resource
    Electronic Resource
    Observations on the morphology, ecology, and behaviour of Bathylychnops exilis Cohen (1985)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of fish biology 27 (1985), S. 0 
    Details
    ISSN: 1095-8649
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Bathylychnops exilis is an unusual north-eastern Pacific mesopelagic fish of which adults have previously been undescribed and the biology is poorly known. Its sensory and digestive systems are highly modified. Sensory modifications include the equivalent of four functional eyes, well developed nasal rosettes, and lateral line canals up to 4 mm in diameter. Digestive adaptations include a peculiar mouth, large tongue, crumenal organ, and a large caecal stomach. Bathylychnops exilis apparently lacks an anal light organ. Ontogenetic changes occur in the morphology of the head, eyes, body, and coloration. Bathylychnops exilis eats crustaceans and may be medusae and microscopic organisms. Reproduction probably occurs in late summer. Adults occur most commonly at about 500 m depth, possibly in groups, and may be diurnal vertical migrators.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1095-8649.1985.tb04022.x
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