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  • 1
    Electronic Resource
    Electronic Resource
    Influence of ambient gas on formation process of Si nanoparticles by laser ablation (1999)
    Springer
    Applied physics 69 (1999), S. S239 
    Details
    ISSN: 1432-0630
    Keywords: PACS: 42.62.Fi; 61.46.+w; 81.15.Fg
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract. We described the influence of a type of gas and its pressure upon the size distribution of Si nanoparticles fabricated by laser ablation in an ambient gas and the plume dynamics during the synthesis. The plume dynamics was investigated by laser-induced fluorescence and ultraviolet Rayleigh scattering. Based on the results, the importance of the gas flow within the ablation plume in the formation of the nanoparticles is understood.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003399900224
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  • 2
    Electronic Resource
    Electronic Resource
    Deposition of highly oriented Bi12SiO20 thin films on Y-stabilized zirconia and SiO2 by pulsed-laser deposition (1999)
    Springer
    Applied physics 69 (1999), S. S723 
    Details
    ISSN: 1432-0630
    Keywords: PACS: 81.15.Fg; 77.84.-S; 42.62.Hk
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract. We describe the deposition and characterization of Bi12SiO20 (bismuth silicon oxide; BSO) thin films on Y-stabilized zirconia (YSZ) and SiO2 glass substrates by pulsed-laser deposition (PLD) for the application of an electric field sensor. It was found that all films deposited on YSZ substrates heated at 400 °C and more were crystallized and the (310) plane was perpendicular to the substrate normal. The highly (310) oriented crystallized films were even deposited on SiO2 glass substrates, and this will make it possible to grow the crystallized films on the end surface of a SiO2 glass fiber.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003390051515
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  • 3
    Electronic Resource
    Electronic Resource
    Effect of cumulative ablation on the ejection of particulates and molecular species from YBa2Cu3O7−x targets (1995)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 77 (1995), S. 5961-5967 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Effects of cumulative ablation on the ejection of particulates and molecular species in pulsed-laser deposition are studied by Mie scattering and laser-induced fluorescence spectroscopy, respectively. When a fresh target is ablated, a large amount of particulates are ejected during several initial shots and rapidly decreased within the first ten shots of ablation. This is due to the ejection of powder residues which are struck on the target surface during the polishing process. After this period, ejection of particulates increased gradually and almost saturated after 200 shots. The saturation characteristic is empirically formulated as a function of the number of cumulative ablations. On the other hand, ejection of molecular species rapidly decreases during the initial 500 ablations and afterwards decreases more slowly with further ablation. The effects of cumulative ablation on the particle ejection are discussed in conjunction with the structural modification of the ablated surface observed by the scanning electron microscope. © 1995 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.359178
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  • 4
    Electronic Resource
    Electronic Resource
    Polymerase chain reaction (PCR) amplification of bacilliform virus (RV-PJ) DNA in Penaeus japonicus Bate and systemic ectodermal and mesodermal baculovirus (SEMBV) DNA in Penaeus monodon Fabricius (1996)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of fish diseases 19 (1996), S. 0 
    Details
    ISSN: 1365-2761
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2761.1996.tb00379.x
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  • 5
    Electronic Resource
    Electronic Resource
    Multicusp type machine for electron cyclotron resonance plasma with reduced dimensions (1996)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 67 (1996), S. 769-774 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: Plasmas are created in a cusp type magnetic trap using electron cyclotron resonance heating. The magnetic field is generated with permanent magnets forming a 12-pole, whereby the polarity at the ends of the rods has been reversed in order to obtain end plugs and to improve the plasma confinement. In this way, the plasma volume could be reduced such that the cross section was close to or smaller than the cutoff width of a circular waveguide. This increases the microwave power absorbed and gives a high plasma density even above the cutoff value. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1146807
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  • 6
    Electronic Resource
    Electronic Resource
    Two-dimensional laser-induced fluorescence imaging of a pulsed-laser deposition process of YBa2Cu3O7−x (1996)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 80 (1996), S. 2458-2466 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Two-dimensional time-resolved density distributions of ground state barium (Ba) and copper (Cu) atoms as well as ground state yttrium oxide (YO) molecules have been measured by two-dimensional laser-induced fluorescence during a pulsed-laser deposition (PLD) process of YBa2Cu3O7−x. The gas phase of PLD has been investigated at ambient oxygen gas pressures between vacuum and 1 Torr. Characteristic behaviors have been observed for each of the measured ground state species. This is due to different oxidation schemes with the ambient oxygen gas. Whereas YO molecules mainly formed near the expanding front of the ablation plume, Ba atoms immediately oxidized at the plume front. Cu atoms, however, did not react during the gas phase of PLD. In addition, a well defined boundary of the expanding front of the ablation plume has been observed at oxygen gas pressures above 100 mTorr. Measurements of density distributions of emissive Ba, Cu, and YO are also discussed. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.363082
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  • 7
    Electronic Resource
    Electronic Resource
    Measurements of sheath electric fields in a high pressure helium radio frequency discharge (1995)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 66 (1995), S. 1059-1061 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The importance of capacitively coupled radio frequency (rf) discharges has resulted in many attempts, by experiment and by simulation, to understand the dynamics of the discharge. Because of the time varying nature of the sheath potential, the sheath region is of special interest in these plasmas. Direct measurements are reported of the sheath electric fields in a helium plasma obtained using a laser induced fluorescence method. In the interpretation of these measurements, the time dependence of the fluorescence spectrum had to be considered. The measured electric field distributions can be used to deduce sheath widths. © 1995 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.113573
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  • 8
    Electronic Resource
    Electronic Resource
    Disodium Fluorescein Octahydrate (1997)
    Oxford [u.a.] : International Union of Crystallography (IUCr)
    Acta crystallographica 53 (1997), S. 284-285 
    Details
    ISSN: 1600-5759
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0108270196010487
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  • 9
    Electronic Resource
    Electronic Resource
    Local Application of Basic Fibroblast Growth Factor Minipellet Induces the Healing of Segmental Bony Defects in Rabbits (1998)
    Springer
    Calcified tissue international 63 (1998), S. 490-495 
    Details
    ISSN: 1432-0827
    Keywords: Key words: Drug delivery system — Basic fibroblast growth factor — Fracture healing — Animal model.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine , Physics
    Notes: Abstract. Fibroblast growth factor (FGF) has been reported to increase the volume of callus in a fracture model of rats. There are, however, no reports of successful repair of segmental bony defects by application of an FGF solution. In this study, the effects of basic FGF on the repair of segmental bony defects in the rabbit femur were examined. Minipellet, a new drug delivery system using atelocollagen, was employed to ensure effective delivery of FGF. Segmental bony defects (10 mm in length) were created in the right femurs of 19 rabbits. In pilot studies, no defects of this size healed spontaneously within 6 weeks. Bones were stabilized with miniexternal fixators. Minipellets containing basic FGF were implanted between fragments so as to bridge the two fragments. The healing processes were monitored radiographically and studied histologically. In rabbits in which FGF was added to the defect site at doses of 1.4 μg or higher, approximately 90% of the defects were filled with new bone and cartilage within 6 weeks after minipellet implantation. In rabbits receiving placebo minipellets, however, approximately 15% of the defects were filled by callus within 6 weeks. Furthermore, this callus did not change into mature bone. An injection of 2 μg of FGF solution to bony defects had no effect on the repair of segmental bony defects. These findings suggest that FGF plays a role in the production of adequate volumes of callus particularly in the initial stages of fracture healing and that sustained local release enables FGF to be effective at a low dose. In summary, large segmental bony defects healed after insertion of low-dose FGF minipellets. An adequate dose of FGF and an appropriate delivery system are required for successful healing of large bony defects. These findings imply the potential value of FGF minipellets in clinical practice.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002239900563
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  • 10
    Electronic Resource
    Electronic Resource
    Effect of Chlorsulfuron on Morphogenetic and Disordered Cell Division in Cultures of Passiflora edulis (1998)
    Springer
    Journal of plant growth regulation 17 (1998), S. 173-178 
    Details
    ISSN: 1435-8107
    Keywords: Key Words. Cell cycle—Cell division—Chlorsulfuron—Morphogenesis—Passiflora edulis—Sulfonylurea herbicide
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract. We examined the effects of a sulfonylurea herbicide, chlorsulfuron, which is known as a potent inhibitor of plant cell division, on morphogenetic cell division and disorganized cell division using the culture system of multiple shoot primordia and callus of Passiflora edulis. The multiple shoot primordia tissue treated with chlorsulfuron failed to achieve shoot morphogenesis, and a large part of the tissue was necrotized during the posttreatment culture, even when it was washed and transferred to chlorsulfuron-free medium. The inhibition of Passiflora shoot morphogenesis by chlorsulfuron was not reversed by the simultaneous addition of branched amino acids, which are known to reverse the inhibitory effect of chlorsulfuron. In contrast, the same treatment of chlorsulfuron on the callus did not kill the cells, although the growth resumption was retarded by a prolonged lag period. The addition of branched amino acids enhanced the recovery growth of the chlorsulfuron-treated callus. These results suggest that the inhibition of disorganized cell division (callus growth) by chlorsulfuron is reversible, whereas morphogenetic cell division (shoot morphogenesis), which is under complex regulation, is inhibited irreversibly by chlorsulfuron. Qualitative differences between morphogenetic cell division and disordered simple proliferative cell division are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/PL00007032
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