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  • 1
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: The new ion energy analyzer is developed to measure the energy distribution function f(E(parallel),E⊥) of ions lost along the confinement magnetic field [M. Okubo et al., J. Plasma Fusion Res. 70, 1102 (1994)]. The end-loss ions have larger E⊥ components compared with their E(parallel) components in the magnetic mirror throat. In this case, the ion energy distribution function is distorted because of the incident angle dependency of the retarding grid transmission. We try to compensate a measured energy distribution function by calculated grid transmission functions. © 1999 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Physics of Plasmas 6 (1999), S. 4672-4678 
    ISSN: 1089-7674
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A two-dimensional magnetohydrodynamic (MHD) simulation of an axial magnetic compression on a field-reversed configuration (FRC) plasma is carried out for the parameter range of a corresponding experiment conducted on the FRC Injection Experiment (FIX) [S. Okada et al., 17th IAEA Fusion Energy Conference 1998 (International Atomic Energy Agency, Vienna) (in press)]. The simulation results show that during the initial stage of the magnetic compression the front part of the FRC plasma is mainly compressed radially, and that after this stage, the compression is primarily axial. Of particular interest is expected that the closed magnetic flux surfaces of the FRC can be retained without any degradation during the magnetic compression process. Further, it is observed in the simulation that the axial magnetic compression enables a transition of the MHD equilibrium from a long and thin to a short and fat FRC. The effects of this magnetic compression on FRC plasmas are discussed. © 1999 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Physics of Plasmas 5 (1998), S. 3649-3655 
    ISSN: 1089-7674
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Plasma parameters, particle end loss flux, flow velocity, and pressure are measured using a radial array of magnetic probes and directional electrostatic probes, in order to investigate particle loss processes in the edge layer of a field-reversed configuration (FRC). A plasma flow toward the end region is detected outside the separatrix between the axial midplane and the end region. The exhaust flow is also found in the end region. These results imply that particles are lost radially across the separatrix and then axially to the end. Measured flow velocity in the end region agrees within an error of 20% with the fluid-theory prediction, in which isentropy and axial momentum balance along magnetic flux tubes are assumed. The existence of the sonic condition in the end region is also suggested, analogous to ordinary fluid flow in a nozzle. The magnetic flux embedded in the edge layer of the confinement region and in the end region agrees within an error of 30%. These results indicate the applicability of the magnetohydrodynamics (MHD) theory for particle end loss. The end loss time along the open field agrees with the MHD prediction within an error of 20%. The measured particle loss flux from the end region is explained by the MHD theory within an error of 20%. The plasma outside the separatrix is considered to behave as hydrodynamic flow through the magnetic loss channel, contrary to the previous work [L. C. Steinhaur, Phys. Fluids 29, 3379 (1986)]. It seems that the magnetic mirror field improves the particle confinement in the edge plasma of the FRC and thus assist the FRC confinement as previously predicted [Slough et al., Nucl. Fusion 24, 1537 (1984)]. © 1998 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 66 (1995), S. 1602-1604 
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Pulse operation of electron cyclotron resonance plasma was performed for the fabrication of diamond films by chemical vapor deposition. With square wave amplitude modulation of microwaves at 500 Hz in frequency, the growth rate became twice as large as one of continuous operation with the same microwave power. Time resolved measurement of the optical emission from the pulse modulated plasma was also carried out. © 1995 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 801 (1996), S. 0 
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Virchows Archiv 427 (1995), S. 91-99 
    ISSN: 1432-2307
    Keywords: Ferric nitrilotriacetate ; Renal proximal tubules ; γ-glutamyltranspeptidase ; Renal cysts ; Renal tumours
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract In experiments using ferric nitrilotriacetate (Fe-NTA) as a renal carcinogen, multiple renal cysts are often observed in addition to renal tumours. In the present study, we used 3-week-old male ddY mice and examined the relation between renal cysts and cancer development. Four months after the start of Fe-NTA administration, we observed cysts in the renal cortex in all Fe-NTA-treated mice, but not in Fe-free NTA-treated mice. Three types of cysts were observed, but only those which originated from the renal proximal tubules showed multi-layered or papillary growth of cyst epithelial cells. Using histochemical staining, we found a cyst formation-tumour induction sequence, and the supposed cystic-papillary tumour induced by Fe-NTA was of proximal tubular cell origin. We also found that the minimum dose of Fe-NTA capable of inducing renal tumours in ddY mice was 10 mg of iron/kg/day, four times in 2 weeks.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Oxford [u.a.] : International Union of Crystallography (IUCr)
    Acta crystallographica 54 (1998), S. 1519-1521 
    ISSN: 1600-5759
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Archiv der Mathematik 64 (1995), S. 512-522 
    ISSN: 1420-8938
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 216 (1967), S. 380-381 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Evidence which suggests a close relationship between mitosis and cell death can be divided into three classes. (a) The radiation dose needed to kill cells at and after the first post-irradiation mitosis (reproductive death) was, in most rapidly dividing cells, substantially less than that needed ...
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 216 (1967), S. 272-273 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] We have focused our attention on the third mode and have attempted to determine, by use of the life cycle analysis14'15, the exact time in the life cycle when nuclear RNA synthesis is switched off and on. The mouse lymphoma cell line (L5118Y) (refs. 16 and 17) growing in suspension was used and, ...
    Type of Medium: Electronic Resource
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