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  • 1
    Electronic Resource
    Electronic Resource
    Primary rhabdomyosarcoma combined with chronic paragonimiasis in the cerebrum: a necropsy case and review of the literature (1986)
    Springer
    Acta neuropathologica 72 (1986), S. 170-177 
    Details
    ISSN: 1432-0533
    Keywords: Brain tumor ; Rhabdomyosarcoma ; Immunohistochemistry ; Ultrastructure ; Cerebral paragonimiasis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary A necropsy case of a primary rhabdomyosarcoma with chronic paragonimiasis in the cerebrum of a 68-year-old man is reported. The clinical data showed a right hemiplegia and dysarthria which became lethal in 6 months even though operation and radiation therapy were performed. Computed tomography revealed a large low-density area associated with the peripheral enhancement in the left basal ganglia, and multiple conglomerated calcified masses in the left temporal and occipital lobes. Biopsied and necropsied materials of the tumor in the basal ganglia was reddish brown in color and histologically was composed of purely mesenchymal derivatives with both embryonal and mature striated muscle cells but neither neuronal nor glial elements. Some of the tumor cells with extending slender cytoplasms showed obvious cross striations at the light and electron microscope levels and immunohistochemical reactivity for myoglobin. All tumor cells were also positive for vimentin, but not for glial fibrillary acidic protein. The clinical and necropsy findings revealed no primary lesion anywhere but in the brain. In addition, numerous dead oval eggs ofParagonimus westermani were found in many cystoid lesions encapsulated by thick connective tissues with calcification and/or ossification. Clinicopathological features of 24 cases of primary rhabdomyosarcoma of the central nervous system reported in the literature are reviewed briefly. The histogenesis of this tumor are discussed together with comments on cerebral paragonimiasis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00685980
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  • 2
    Electronic Resource
    Electronic Resource
    Wave absorption at the second harmonic of the electron-cyclotron frequency in a tokamak plasma (1985)
    [S.l.] : American Institute of Physics (AIP)
    Physics of Fluids 28 (1985), S. 2625-2627 
    Details
    ISSN: 1089-7666
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Wave absorption in the ISX-B tokamak [Phys. Rev. Lett. 44, 647 (1980)] at the second harmonic (ω=2ωce) of the electron-cyclotron frequency is reported. Measurements of the absorption of a wave polarized in the extraordinary mode and propagating perpendicular to the toroidal magnetic field are in agreement with computations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.865221
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  • 3
    Electronic Resource
    Electronic Resource
    Highly doped ruby filters for stray light reduction in SCATPAK II (1986)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 57 (1986), S. 1819-1821 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: One of the major problems in Thomson scattering measurement of electron temperature is the suppression of stray light. Filters of AR-coated ruby with a high-percentage doping of Cr have been produced for use on SCATPAK II. The filters have negligible attenuation of the signal above 7000 A(ring) and attenuate light at the laser line by a factor of (approximately-equal-to)9. Experimental details of the filter performance, design, and fabrication are presented. The filter performance is compared with experimental measurements of the Cr-in-sapphire absorption cross section at the R1 line. Ruby filters present a cost-effective method of stray light suppression for experiments using ruby lasers and the red-shifted portion of the scattered spectrum.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1139139
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  • 4
    Electronic Resource
    Electronic Resource
    Two-dimensional Thomson scattering system for ATF (1986)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 57 (1986), S. 1816-1818 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: A two-dimensional Thomson scattering system is being designed for the Advanced Toroidal Facility (ATF) torsatron experiment. This system will provide electron temperature and density measurements at 15 points along a vertical chord with each shot from a two-dimensional Te and ne map of an ATF toroidal cross section can be obtained. The horizontal Thomson scattering viewing port is offset by 15° toriodally from the ports passing the vertical laser beam. Translating and rotating mirors will be used to relay light from the viewing port to the collection lens. This makes it possible to scan horizontally, view as much of the vertical laser beam as possible, and to use a fixed focal length, fixed position lens. Three sets of spectrometers optimized to three temperature ranges will be used. At the output of each spectrometer, dispersed light will be detected by an array of five, seven, or eight photomultiplier tubes, depending on the temperature range of the spectrometer.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1139138
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  • 5
    Electronic Resource
    Electronic Resource
    Electron beam and magnetic field mapping techniques used to determine field errors in the ATF torsatron (1989)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 60 (1989), S. 2680-2689 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: The beam from an electron gun was used to trace flux surfaces in the Advanced Toroidal Facility (ATF) torsatron. The ATF magnetic field was run steady state at 0.1 T, and the electron beam was detected optically with an image-intensified, solid-state camera when it impinged on a phosphor-coated screen. Closed flux surfaces and islands at several low-order resonances were observed. The largest island, located at the ι= 1/2 surface, was from 5 to 6 cm in width, and its presence implied the existence of magnetic field errors. To determine if these error fields could be traced to small misalignments of the magnetic coils, a device capable of accurately measuring the radial and vertical magnetic field components of individual coil sets was placed in the center of ATF. This device allowed for a determination of the precise location of each of the coils that make up the ATF coil set. No significant coil misalignments were found. A further investigation of the coil configuration led to the identification of dipole fields in the helical field coil leads as the source of the field errors. The techniques developed in making these measurements are described in the text.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1141082
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  • 6
    Electronic Resource
    Electronic Resource
    Interfacial microstructure of tungsten silicide Schottky contacts to n-type GaAs (1988)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 64 (1988), S. 2113-2121 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: To investigate the effects of microstructure of the Schottky characteristics of WSix contacts to n-type GaAs, cross-sectional transmission electron microscopy, x-ray diffraction, and secondary-ion mass spectrometry have been used to study the interfacial and bulk film microstructures. The barrier heights and ideality factors of WSi0.1 and WSi0.6 contacts were obtained by forward current-voltage and capacitance-voltage measurements. These Schottky characteristics were found to be unrelated to the bulk film microstructure, but closely related to the interfacial microstructure at the WSix/GaAs interfaces. Both the WSi0.1/GaAs and WSi0.6/GaAs interface morphologies were observed to be stable and remain smooth during annealing at 800 °C for 10 min, while a rough interface with W protrusions and Ga and As out-diffusion was observed in two-layer W/WSi0.6 contacts. The stability of the WSix interfacial microstructure is suggested to depend on both the chemical stability of the WSix films with GaAs and the intervening oxides between WSix and GaAs. Nontrivial amounts of W and Si were observed to diffuse from the WSi0.1 film into the GaAs substrate during annealing at 800 °C for 10 min. Although these in-diffused impurities in the GaAs substrate do not seem to affect the Schottky characteristics after the 800 °C annealing, they could be a potential problem in long-term stability. Of the three WSix film compositions, the single-layer WSi0.6 films were found to have the least W and Si in-diffusion and thus the best thermal stability.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.341721
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  • 7
    Electronic Resource
    Electronic Resource
    Direct measurement of K movement by39K NMR in perfused rat mandibular salivary gland stimulated with acetylcholine (1989)
    Springer
    Pflügers Archiv 414 (1989), S. 385-392 
    Details
    ISSN: 1432-2013
    Keywords: Intracellular K ; 39K NMR ; Net K flux ; Acetylcholine ; Ouabain
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The intracellular K content (Kin) of the isolated perfused rat mandibular gland was measured by39K NMR spectroscopy at 25°C, using an inversion recovery technique based on the fact that the spin-lattice (T1) relaxation of Kin is much faster than that of the extracellular K. Kin decreased by 30–34% of the resting level and reached a plateau level during secretion evoked by a sustained infusion of 1 μmol/l acetylcholine. Addition of 1 mmol/l ouabain decreased Kin by an additional 41% of the resting level. The K net flux to the blood and saliva was calculated from the K concentrations and flow rates of the effluent and the saliva. At an initial stage of secretion the gland lost K to the vascular side at a rate of 12.6±1.8 μmol/g-min (mean ± SEM,n=7). During sustained secretion, the gland took K up from the vascular side at a rate of 3.3±0.7 μmol/g-min (n=7), and the same amount of K was secreted into the saliva (4.7±1.1 at 5–10 min, 2.8±0.8 μmol/g-min at 20–30 min), resulting in no net K movement from the gland. Addition of 1 mmol/l ouabain stopped salivary secretion and caused a transient K release to the vascular side at a maximum rate of 12.8±1.1 μmol/g-min. Withdrawal of acetylcholine and ouabain induced K uptake from the vascular side (6.5±0.7 μmol/g-min) and the amount of K released was completely restored when Kin recovered completely. The ratio (0.38) of the acetylcholine-induced K loss (30 μmol/g) to the ouabain-induced total K loss (80 μmol/g) was very similar to the ratio (0.41–0.45) measured by39K NMR. The present observations lead to the conclusion that the changes in39L-NMR-visible intracellular K directly relate to K movement across both the basolateral and the luminal membranes of salivary epithelia.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00585047
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  • 8
    Electronic Resource
    Electronic Resource
    Free proline contents in two different groups of rice mutants resistant to hydroxy-L-proline (1989)
    Springer
    Theoretical and applied genetics 77 (1989), S. 44-48 
    Details
    ISSN: 1432-2242
    Keywords: Oryza saliva L. ; Hydroxy-L-proline resistance ; Proline accumulation ; Callus ; Genetic marker
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary In four rice (Oryza sativa L.) mutants resistant to hydroxy-L-proline (Hyp), HYP101, HYP203, HYP205 and HYP210, and in their original variety, Nipponbare, free proline and Hyp contents in the seeds and in the 14-day-old seedlings have been determined. The four mutants can be divided into two groups: HYP101 and HYP203 are classified as to recessive gene and the levels of free proline are similar to that of the original variety; the second group includes mutants HYP205 and HYP210 where the Hyp resistance is transmitted heterozygously and, both in the seeds and in the seedlings, a remarkable increase in free proline content is observed. In particular, free proline contents in the seeds of HYP205 and HYP210 are, respectively, 24 and 12 times that of the original variety. Hyp is detected only in the seedlings cultured with Hyp solution. In the Hyp resistant seedlings of HYP205 and HYP210, Hyp contents are twice that of the original variety and less than half in the seedlings of HYP101 and HYP203. Hyp resistance and differential proline levels are also evident in the callus initiated from the mutants. This suggests that the Hyp resistant mutants are good genetic markers both in planta and in vitro. The Hyp mutants are also discussed with regard to stress resistance.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00292314
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  • 9
    Electronic Resource
    Electronic Resource
    Superconducting transition properties of Nb3Sn particles-Ag composite (1985)
    Springer
    Journal of materials science 4 (1985), S. 728-732 
    Details
    ISSN: 1573-4811
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00726973
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  • 10
    Electronic Resource
    Electronic Resource
    Intraspecific hybridization and its bearing on chromosome evolution inVicia narbonensis (Fabaceae) (1989)
    Springer
    Plant systematics and evolution 167 (1989), S. 201-217 
    Details
    ISSN: 1615-6110
    Keywords: Angiosperms ; Fabaceae ; Vicia narbonensis ; Intraspecific crosses ; interchange homozygote ; karyotype ; meiotic pairing ; chromosome differentiation ; evolution
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Nine accessions ofVicia narbonensis, considered to be the wild progenitor of faba bean (Vicia faba), were investigated to ascertain the nature and extent of intraspecific karyotypic polymorphism. The chromosome complements resolved into four distinct types (A, B, C, D), and the meiotic data of F1 hybrids (A × B, B × C, A × C) revealed that alteration in chromosome morphology is the result of segmental interchanges. The interchange complexes indicate that the parents differ from each other by 1 to 2 interchanges. It is also evident that karyotype B, and not A as previously reported, is the normal karyotype of the species, and A and C are single homozygotes for unequal interchange. The comparative karyomorphology of the parents and the hybrids, and of two interchange heterozygotes of four chromosomes each in F1 hybrids of A × C shows that the chromosomes involved in the single interchange homozygotes (A, C) are not common and the breaks in both interchanges occurred in short and long arms of the involved chromosomes. Identification of the interchanged chromosomes in the complements and the frequency of ring and chain quadrivalents in the heterozygotes enabled location of the breakpoints. The present results provide probably the first example indicating that interchange homozygosity (A) is not only firmly established but also has enabled the species to spread further by adapting to a wide range of habitats. — The genetic relationships between A and D are very different. All seven chromosome pairs in D could be distinguished from A, and for that matter, B and C as well. From the meiotic pairing properties it is also amply clear that genome D is well differentiated from A and possibly B, and C, and deserves special status.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00936407
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