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  • 1
    Electronic Resource
    Electronic Resource
    Birational invariants in the case¶of prime characteristic (1998)
    Springer
    Manuscripta mathematica 95 (1998), S. 413 
    Details
    ISSN: 1432-1785
    Keywords: Mathematics Subject Classification (1991): 14F10, 14M10, 14M17
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract: The Frobenius automorphism of the function field allows to define some discrete birational invariants of algebraic manifolds using p s -th powers of differentials. Examples of algebraic hypersurfaces are sufficient to show the independence of the familiar birational invariants.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002290050038
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  • 2
    Electronic Resource
    Electronic Resource
    Asymptotics for some green kernels on the Heisenberg group and the Martin boundary (1989)
    Springer
    Mathematische Annalen 283 (1989), S. 97-119 
    Details
    ISSN: 1432-1807
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01457504
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  • 3
    Electronic Resource
    Electronic Resource
    Schranken für verschränkte Faltungsoperatoren (1982)
    Springer
    Mathematische Annalen 260 (1982), S. 511-519 
    Details
    ISSN: 1432-1807
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01457029
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  • 4
    Electronic Resource
    Electronic Resource
    Sulphide inclusions in manganese nodules of the Northern Pacific (1979)
    Springer
    Mineralium deposita 14 (1979), S. 375-380 
    Details
    ISSN: 1432-1866
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00206366
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  • 5
    Electronic Resource
    Electronic Resource
    Conservation tillage: best management practice for nonpoint runoff (1981)
    Springer
    Environmental management 5 (1981), S. 33-53 
    Details
    ISSN: 1432-1009
    Keywords: Conservation tillage ; runoff ; water quality ; best management practice ; nonpoint
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract Decisionmakers are in the process of selecting remedial measures for controlling nonpoint pollution runoff. Conservation tillage (CT) is being looked to as one of the major recommended practices. Many different systems exist and vary in the amount of crop residue left and soil roughness produced. Therefore, varying results occur in terms of yield and potential water quality impacts. Differences vary with type of tillage system, soils, geographic region, and the farmer's management. The purpose of this review is to provide material to decisionmakers that points out the assets and liabilities of the various CT systems. Tillage effects on soil characteristics and plant growth are presented and include a discussion of soil moisture and temperature, weed and insect control, nutrient availability, and yields. Water quality aspects are addressed through a discussion of the effects CT systems have on sediment, water, pesticide, and phosphorus loss.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01866608
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  • 6
    Electronic Resource
    Electronic Resource
    Core level photoemission of iodine overlayers (1988)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 89 (1988), S. 4406-4411 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: We report the core level binding energies of chemisorbed iodine on Fe(110) and Fe(100). A decrease of 0.6 eV in the binding energies of the iodine core levels is observed with the increasing coverage of the chemisorbed iodine overlayer. This change in core level binding energies with coverage is compared with the results for iodine overlayers on other transition metal surfaces. The difference in core level binding energies between chemisorbed iodine on Fe(110) and molecularly adsorbed iodine on Fe(110) is explained using a Born–Haber cycle and an "equivalent'' cores approximation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.454826
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  • 7
    Electronic Resource
    Electronic Resource
    Proton spin–lattice relaxation rate in supercooled H2O and H2 17O under high pressure (1990)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 93 (1990), S. 4796-4803 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: The proton spin–lattice relaxation rate has been investigated as a function of pressure (p≤250 MPa), temperature (180 K≤T≤300 K), and oxygen-17 enrichment (25.7 atom-%, 50.7 atom-%) in metastable water. Intramolecular proton–oxygen 17 dipolar interactions in light water in relation to deuterium electric quadrupole interactions in heavy water carry similar dynamic information and allow the complicated dynamic isotope effect in liquid water to be investigated in the whole metastable range. Under hydrostatic pressure the proton relaxation rate curve R1 (T, p, ωH) has been investigated at five different Larmor frequencies (100 MHz≤ω≤500 MHz). These experiments unequivocally prove the isotropy of reorientational motions of water molecules on a nanosecond time scale and demonstrate the necessity to include fast quasilattice vibrations into a consistent interpretation of the relaxation rates in the dispersion regime.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.458670
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  • 8
    Electronic Resource
    Electronic Resource
    Magnetic diagnostics and feedback control on TFTR (invited) (1985)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 56 (1985), S. 941-946 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: The various operating modes of TFTR require the use of a sophisticated system of magnetic diagnostics integrated with a feedback control system. This system has successfully controlled the plasma current and position over a range of major and minor radii, during strong compression, and will soon be used during intense neutral beam heating. Current and position values are held constant to within 2 kA and 1 cm. A wide variety of preoperational field measurements were required to determine proper compensation for dynamic stray fields due to eddy currents. Data from plasma profile diagnostics, such as bolometer arrays, Thomson scattering, soft x-ray diode array, and the scanning radiometer, have been compared to the absolute position deduced from magnetics. In addition to control functions, magnetic diagnostics on TFTR provide data on plasma current asymmetry, βθ, MHD fluctuations, loop voltage, and flux consumption. This paper will discuss the mechanical and electronic design constraints, as well as the analytic and calibration techniques required.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1138056
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  • 9
    Electronic Resource
    Electronic Resource
    Multiple electron stripping of 3.4 MeV/amu Kr7+ and Xe11+ in nitrogen (2001)
    [S.l.] : American Institute of Physics (AIP)
    Physics of Plasmas 8 (2001), S. 1753-1756 
    Details
    ISSN: 1089-7674
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Use of heavy ions beams with ∼10 MeV/amu mass ∼200, and average charge state of 1+ has been proposed as a driver for heavy ion fusion. Stripping of the ion beam by background gas can lead to an increase in the space charge density of the beam, which may make focusing the intense ion beam onto small targets more complex. Knowledge of the electron loss cross sections is essential to understand and address the problem. Currently, there are no 10 MeV/amu mass=200, charge state=1 beams available, and the theories that calculate electron loss cross sections can be experimentally tested only by using available beams of somewhat lower energy and higher initial charge state. The charge state distribution of ions produced in single collisions of 3.4 MeV/amu Kr7+ and 3.4 MeV/amu Xe11+ in N2 have been measured at the Texas A&M Cyclotron Institute using a windowless gas cell. The charge states of the outgoing ions are determined by magnetic analysis using a position-sensitive microchannel-plate detector. The cross sections for single and multiple electron loss are determined, and the results indicate that substantial multiple-electron loss occurs. The relative cross section for loss of i+1 electrons is 0.3–0.7 times that for i electron loss. The average number of electrons removed per one collision (sum of the electron-weighted cross sections normalized to the total cross section) is 1.86 for Kr and 1.97 for Xe. © 2001 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1365408
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  • 10
    Electronic Resource
    Electronic Resource
    The structural homogeneity of boron carbide thin films fabricated using plasma-enhanced chemical vapor deposition from B5H9+CH4 (1993)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 74 (1993), S. 6919-6924 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Boron carbide thin films of several B/C ratios have been deposited on Si(111) using plasma-enhanced chemical vapor deposition from nido-pentaborane(9) (B5H9) and methane (CH4). X-ray diffraction studies of boron carbide thin films on Si(111) exhibited characteristic microcrystalline diffraction lines. Soft x-ray emission spectroscopy was used to verify that the local electronic structure and composition of each sample corresponded to a homogeneous solid solution boron carbide phase.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.355066
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