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  • 2000-2004  (4)
  • 1985-1989  (6)
  • 1
    Electronic Resource
    Electronic Resource
    Energy distribution of negative carbon ion beam extracted from a plasma-sputter-type negative ion source : The 8th international conference on ion sources (2000)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 71 (2000), S. 1122-1124 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: The energy distributions of C− and C2− beams extracted from a plasma-sputter-type negative ion source with the concave graphite target were measured by a retarding field energy analyzer having 1.5% resolving power. The reduction in energy spread of the energy distribution functions was observed by adding Cs into the discharge. The observed energy spreads of C− beam for 650 V target bias were 15 eV without Cs and 13 eV with Cs, respectively. The shift toward the lower energy due to Cs supply was also observed. The observed negative energy shift was constant at about 3.7 eV for the C beam, the value corresponded to the work function reduction from a pure graphite to Cs covered graphite surface. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1150403
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  • 2
    Electronic Resource
    Electronic Resource
    Characteristics of ion beams extracted from a compact powdery sample ion source : The 8th international conference on ion sources (2000)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 71 (2000), S. 719-721 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: Spatial distributions of the current density of the ion beams extracted from an electron-stimulated-desorption-type powdery sample ion source have been measured. The vertical profile showed an asymmetry which can be attributable to the localized ion emission at the powder surface. The deflection of the beam in the horizontal direction caused by the magnetic field for guiding the electron's motion to hit the powder surface was also confirmed. Despite the presence of this inhomogeneity which may degrade the beam quality, the positive and negative oxygen ion beams produced from BaO powder with the beam energy as low as 2 kV were focused to about 2 mm diameter. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1150272
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  • 3
    Electronic Resource
    Electronic Resource
    Measurement of velocity distribution functions of neutral particles in ion source plasma : Papers from the Ninth International Conference on Ion Sources (2002)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 73 (2002), S. 958-960 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: The velocity distribution function of the gas effusing from a 5.5-cm-diam, 5-cm-long small ion source was measured by the mass separated time-of-flight method. The measured distribution function could be fitted to a Maxwellian distribution before the commencement of a discharge, when the deuterium pressure in the ion source was below 0.6 Pa. The effect of discharge upon the distribution function of neutral deuterium below this operating pressure was investigated by changing the arc power. The deuterium gas temperature determined by fitting the measured distribution function to a Maxwellian showed a maximum gas temperature of 800 K at discharge power density of 6 W/cm3. Effects of discharge upon argon and helium gas temperature were also measured, which showed a monotonic increase against the discharge power. © 2002 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1427759
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  • 4
    Electronic Resource
    Electronic Resource
    X-ray scattering study of the magnetic phase transformation in GdB6 (1988)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 63 (1988), S. 3580-3582 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Gadolinium hexaboride is thought to have at least two magnetic phases in zero magnetic field. The structure of these phases, however, is still unknown. Due to the high neutron absorption of both Gd and B, studies by neutron scattering are not easy to do. We therefore used the alternative technique of x-ray magnetic scattering. Experiments were performed with a rotating anode x-ray source and CuKα radiation at temperatures down to 6 K. At the lowest temperatures two sets of superlattice reflections of the form (h/2,k,l) and/or (h,k/2,l) and (h/2,k/2,l) were observed. The intensity of both types of reflection remains roughly constant until 10 K. At this temperature the intensities of the (h/2,k,l) and (h,k/2,l) reflections increase sharply and reach a maximum around 11.5 K, while the (h/2,k/2,l) reflections rapidly disappear. At 12 K, only the former reflections are observed and they disappear discontinuously at TN =15.85±0.5 K. The results confirm the existence of two magnetic phase transitions in GdB6 and suggest a complex multi-q magnetic structure.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.341164
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  • 5
    Electronic Resource
    Electronic Resource
    Immunohistochemistry of carbonic anhydrase isozymes (CA-I, II and III) in canine salivary glands: a distributional and comparative assessment (2000)
    Oxford, UK : Blackwell Science, Ltd
    Anatomia, histologia, embryologia 29 (2000), S. 0 
    Details
    ISSN: 1439-0264
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: The immunohistolocalization of carbonic anhydrase isozymes (CA-I, II, III) in canine salivary glands was studied using antiserum against CA-I, II, III. In parotid glands, immunostaining intensely localized cytosolic CA-II antiserum throughout the cytoplasm of acinar secretory cells and ductal epithelial cells, especially in the striated duct region. CA-III reactivity in the glands was only seen selectively at the intercalated ductal cells. In contrast, no immunoreaction localized CA-I in the gland. In the submandibular and sublingual glands, CA-I, II, and III were all observed in the ductal segments of the glands, whereas serous demilune appeared devoid of all three cytosolic CA isozymes. In contrast, in zygomatic glands (i.e. dorsal buccal glands) all CA isozymes were observed in both serous demilune and ductal segments. In all of the salivary glands examined, no mucous acinar cells were found to be reactive for any CA.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1439-0264.2000.00234.x
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  • 6
    Electronic Resource
    Electronic Resource
    Thermodynamics of surfactant-dye complex formation in aqueous solutions II. Sodium dodecyl sulfate and some azo oil dye systems (1988)
    Springer
    Colloid & polymer science 266 (1988), S. 539-546 
    Details
    ISSN: 1435-1536
    Keywords: Surfactant-dye complex ; sodium dodecyl sulfate ; azo oil dye ; thermodynamics study ; dyeing rate
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Spectrophotometric and thermodynamic investigations are reported of the interactions between anionic surfactant (sodium dodecyl sulfate) and six azo oil dyes (benzene azo naphthalene type) which have an amino group at 4-position of naphthalene. A pronounced spectral change in the dye solution occurs on addition of surfactant. For increasingly surfactant concentrations (below the CMC), the interaction between dye and surfactant is so sharp that the systems may be said to exhibit an isosbestic point; then a new absorption band appears at longer wavelengths. The spectral data can be quantitatively interpreted in terms of a complex formation. The equilibrium coefficients of the complex formation are determined at different temperatures. The thermodynamic parameters of the complex formations (the free energy change (ΔG), enthalpy change (ΔH) and change in entropy (ΔS) are also calculated. The reaction of complex formation is exothermic (ΔH negative).ΔG is dependent on the hydrophobic nature andpKa of the dye. These complexes will form due to hydrophilic-hydrophilic interaction and will become more stable due to hydrophobic-hydrophobic interaction. With increasing amounts of complex, the infinite adsorption, the exhaustion and the rate constant of dyeing for nylon decrease.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01420765
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  • 7
    Electronic Resource
    Electronic Resource
    An unusual tracheal foreign body in a neonate (1986)
    Springer
    Pediatric radiology 16 (1986), S. 420-421 
    Details
    ISSN: 1432-1998
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02386823
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  • 8
    Electronic Resource
    Electronic Resource
    Thermodynamics of surfactant-dye complex formation in aqueous solutions. Sodium alkyl sulfates and azo oil dye systems (1988)
    Springer
    Colloid & polymer science 266 (1988), S. 156-163 
    Details
    ISSN: 1435-1536
    Keywords: Surfactant-dye complex ; sodium alkyl sulfate ; azo oil dye ; thermodynamics study
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Thermodynamics of surfactant-dye complex formation have been studied, in terms of equilibrium coefficient, using a spectrophotometer. The systems are 6 sodium alkyl sulfates, which have different alkyl chain lengths, and 4-phenylazo-1-naphthylamine. A pronounced spectral change in the dye solution occurs on addition of the surfactant; the change has a definite isosbestic point and a new absorption band at 535 nm because of surfactant-dye complex formation, which is caused by hydrophilic-hydrophilic interaction. As the alkyl chain length in the surfactant increases, the values of free energy change (negative) increase, while the value of enthalpy change (negative) increases and the value of entropy change (positive) decreases. The longer the alkyl chain length in surfactant increase, the more stable the surfactant-dye complex becomes. Surfactant-dye complex will form due to hydrophilic-hydrophilic interaction and will become more stable due to hydrophobic-hydrophobic interaction.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01452813
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  • 9
    Electronic Resource
    Electronic Resource
    Detection of the optogalvanic effect in flames with a microwave resonant cavity (1986)
    Springer
    Applied physics 39 (1986), S. 247-250 
    Details
    ISSN: 1432-0649
    Keywords: 07 ; 62 ; 52 ; 36
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A new method for the detection of the optogalvanic (OG) effect in a flame has been developed. In the experimental scheme, the reflected microwave power is measured for the detection of the OG effect inside a microwave resonant cavity. In a preliminary experiment, the OG signal of sodium atom aspirated into a propane/O2 flame was observed at a concentration below 10 ng/ml.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00697491
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  • 10
    Electronic Resource
    Electronic Resource
    Thermal expansion and magnetostriction of the ferromagnetic dense Kondo system CeSi x (1988)
    Springer
    Journal of low temperature physics 73 (1988), S. 175-205 
    Details
    ISSN: 1573-7357
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The thermal expansion and magnetostriction of single crystals of normal and ferromagnetic dense Kondo systems CeSi1.86 and CeSi1.70 are measured. The results show very characteristic behavior. The strain-dependent Kondo effect supports the Γ7-like ground doublet conjectured previously based on the analysis of the magnetic susceptibility data. It is shown that the result is similar to that in the usual nearly weak ferromagnetic system.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00681976
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