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  • Electronic Resource  (5)
  • 1995-1999  (5)
  • 1985-1989
  • 1995  (5)
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  • Electronic Resource  (5)
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  • 1995-1999  (5)
  • 1985-1989
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  • 1
    Electronic Resource
    Electronic Resource
    A merging preaccelerator for high current H− ion beams (1995)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 66 (1995), S. 3859-3863 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: The high power ion beams used in the next generation thermonuclear fusion reactors require high current negative ion beams accelerated to high energy, with high efficiency. One way to meet these requirements is to merge multiple low current density H− beamlets into a single high current beam. The feasibility of a high current merging preaccelerator was demonstrated in this experiment by merging 19 beamlets of H− ions distributed over a circular area 80 mm in diameter from a Japan Atomic Energy Research Institute negative ion source. H− ions were extracted at a current density exceeding 10 mA/cm2 at the ion source which operates at 0.13 Pa (1 mTorr), with a low arc power density (70 V×250 A). Spherically curved grids (with built-in magnetic electron suppression) were used in the preaccelerator to focus the extracted beamlets into a single 104 mA, 100 keV beam. The merged beam has a diameter of 23 mm and a converging angle of ±30 mrad at the beam envelope. The rms emittance of the 104 mA merging beam was 1.00 π mrad cm, which is a condition acceptable to the electrostatic quadropole accelerator for further acceleration. © 1995 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1145449
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  • 2
    Electronic Resource
    Electronic Resource
    Acceleration of 100 mA of H− in a single channel electrostatic quadrupole accelerator (1995)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 66 (1995), S. 3864-3868 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: Neutral beams for the next generation tokamaks will be based on multiampere negative ion beams with a beam energy of about 1.0 MeV and pulse lengths of a thousand seconds. High intensity dc beams at these levels of beam energy will require extensive development in electrostatic accelerators. At Lawrence Berkeley Laboratory, a two-module electrostatic quadrupole (ESQ) accelerator was built to accelerate ions to 200 keV. In this experiment, up to 100 mA of H− beam current was obtained from a Japan Atomic Energy Research Institute cesiated volume source using a multiaperture preaccelerator which merged 19 beamlets into a single circular beam at the entrance to the ESQ accelerator. The H− beam was accelerated by the ESQ to accelerate 200 keV without any significant beam loss or emittance growth. © 1995 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1145450
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Involvement of blood coagulation factor XIII in burn healing in the carbon tetrachloride-induced hepatic injury model in rats (1995)
    Springer
    Inflammation research 44 (1995), S. 264-268 
    Details
    ISSN: 1420-908X
    Keywords: Factor XIII ; Wound healing ; Liver injury
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract An involvement of blood coagulation factor XIII (FXIII) in healing of burns was examined in rats with the carbon tetrachloride (CCl4)-induced hepatic injury. The oral administration of 2 and 4 ml/kg CCl4 to rats every 4 days delayed healing of the burns induced on the back skin and decreased FXIII activity. These animals showed some hepatotoxic signs (increased glutamicoxaloacetic and glutamic-pyruvic transaminases) and accelerated blood coagulation system (increased fibrinopeptide A and fibrin degradation product). The delay in the burn healing was shortened by repeated intravenous injections with normal human placenta-derived FXIII concentrate (Fibrogammin P; 120 U/body) every 4 days. There was a negative correlation between plasma FXIII activity at the end of experiment and the time required for wound healing. These findings suggest that reduction in FXIII activity may be one of the factors inducing delayed wound healing in the CCl4-induced hepatic injury rats.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01782980
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  • 4
    Electronic Resource
    Electronic Resource
    Analysis of newly-defined stress intensity factors for angular corners using singular integral equations of the body force method (1995)
    Springer
    International journal of fracture 76 (1995), S. 243-261 
    Details
    ISSN: 1573-2673
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract In this study, numerical solutions of singular integral equations are discussed in the analysis of angular corners. The problems are formulated as a system of singular integral equations on the basis of the body force method. In the numerical solutions, two types of fundamental density functions are chosen to express the symmetric type stress singularity of % MathType!MTEF!2!1!+-% feaafeart1ev1aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn% hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr% 4rNCHbGeaGGipm0dc9vqaqpepu0xbbG8F4rqqrFfpeea0xe9Lq-Jc9% vqaqpepm0xbba9pwe9Q8fs0-yqaqpepae9pg0FirpepeKkFr0xfr-x% fr-xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaWaaSGbaeaaca% aIXaaabaGaamOCamaaCaaaleqajqwaacqaaiaaigdacqGHsislcqaH% 7oaBdaWgaaqcKjaGaeaacaaIXaaabeaaaaaaaaaa!3CE1!\[{1 \mathord{\left/ {\vphantom {1 {r^{1 - \lambda _1 } }}} \right. \kern-\nulldelimiterspace} {r^{1 - \lambda _1 } }}\] and the skew-symmetric type stress singularity of % MathType!MTEF!2!1!+-% feaafeart1ev1aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn% hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr% 4rNCHbGeaGGipm0dc9vqaqpepu0xbbG8F4rqqrFfpeea0xe9Lq-Jc9% vqaqpepm0xbba9pwe9Q8fs0-yqaqpepae9pg0FirpepeKkFr0xfr-x% fr-xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaWaaSGbaeaaca% aIXaaabaGaamOCamaaCaaaleqajqwaacqaaiaaigdacqGHsislcqaH% 7oaBdaWgaaqcKjaGaeaacaaIYaaabeaaaaaaaaaa!3CE2!\[{1 \mathord{\left/ {\vphantom {1 {r^{1 - \lambda _2 } }}} \right. \kern-\nulldelimiterspace} {r^{1 - \lambda _2 } }}\] then the unknown functions are expressed as a linear combination of the fundamental density functions and power series. The calculation shows that the present method gives rapidly converging numerical results for angular corners as well as ordinary cracks in homogeneous materials. The stress intensity factors of angular corners are calculated for various geometrical and loading conditions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00048289
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  • 5
    Electronic Resource
    Electronic Resource
    Evaluation of equation-of-state parameters from PVT data (1995)
    Weinheim : Wiley-Blackwell
    Acta Polymerica 46 (1995), S. 312-318 
    Details
    ISSN: 0323-7648
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: The characteristic parameters for three different equation-of-state (EOS) theories have been determined for polystyrene and low-molecular weight polyisoprene using pressure-volume-temperature (PVT) data. Basically two procedures for the calculation of characteristic parameters were applied. The characteristic parameters were calculated, firstly, from coefficients of expansion, compressibilities and densities, and secondly, by fitting the corresponding EOS to PVT data minimizing the sum of the squares of the differences between experimental and calculated pressures. The characteristic parameters obtained by the two methods are compared with regard to their ability to describe PVT data. A comparison of the three different EOS theories reveals that, for describing polymeric liquids, the modified cell model of Dee and Walsh is superior to the theory of Flory, Orwoll and Vrij as well as to the lattice fluid theory of Sanchez and Lacombe. Finally, formulae are given to convert the characteristic parameters from one theory into those of another.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/actp.1995.010460405
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    Paper (German National Licenses)
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