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  • 1
    Electronic Resource
    Electronic Resource
    Castleman disease with renal amyloidosis: imaging findings and clinical significance (1995)
    Springer
    Abdominal imaging 20 (1995), S. 376-378 
    Details
    ISSN: 1432-0509
    Keywords: Amyloidosis ; Hamartoma ; Kidney ; Computed tomography ; Ultrasound
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We report two cases of renal amyloidosis associated with mesenteric and mediastinal Castleman disease of plasma cell type. Computed tomographic (CT) scan revealed a mesenteric mass with multiple nodal enlargement in one patient and a right paratracheal mass with irregular central calcifications in the second patient. Renal ultrasonography (US) showed increased echogenicity of the renal parenchyma with prominent medullas. Doppler waveform obtained in the kidney associated with mesenteric disease showed complete absence of diastolic flow signal, although it was normal in the patient with mediastinal disease. Recognition of Castleman disease as the cause of renal amyloidosis and the understanding of CT and US findings of this entity are important for the management, as well as its diagnosis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00203376
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  • 2
    Electronic Resource
    Electronic Resource
    Exogenous lipoid pneumonia: high-resolution CT findings (1999)
    Springer
    European radiology 9 (1999), S. 287-291 
    Details
    ISSN: 1432-1084
    Keywords: Key words: Lung ; CT ; Pneumonia ; Aspiration
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract. The aim of this study was to assess high-resolution computed tomography (HRCT) findings of exogenous lipoid pneumonia. High-resolution computed tomography was obtained in 25 patients with proven exogenous lipoid pneumonia resulting from aspiration of squalene (derived from shark liver oil). Diagnosis was based on biopsy (n = 9), bronchoalveolar lavage (n = 8), or sputum cytology and clinical findings (n = 8). The clinical history of taking squalene was confirmed in all patients. The CT findings were classified into three patterns: diffuse ground-glass opacity, consolidation, and interstitial abnormalities. Distribution of the abnormalities, duration of taking squalene, predisposing factors for aspiration, and route of administration were analyzed. Ten patients showed diffuse ground-glass opacity pattern. Seven of 10 patients had predisposing conditions such as unconsciousness, pharyngeal dysmotility, or motor disturbances, and 6 patients had a recent history of taking large amount of squalene through nasal route. Seven patients who had consolidation pattern had a history of taking squalene for several months and did not have any predisposing factor. All of the 5 patients who had a pattern of interstitial abnormalities had a history of taking squalene longer than 1 year and showed segmental distribution of interstitial thickening with interposing ground-glass opacities. Three patients simultaneously had two different patterns at different lobes of the lung. The HRCT findings of lipoid pneumonia are ground-glass opacities, consolidation, and interstitial abnormalities. These HRCT findings with appropriate inquiries could be useful for diagnosis of exogeneous lipoid pneumonia.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003300050669
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  • 3
    Electronic Resource
    Electronic Resource
    Frozen Dessert Attribute Changes with Increased Amounts of Unsaturated Fatty Acids (1994)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 59 (1994), S. 0 
    Details
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Vanilla flavor frozen desserts were made to be similar in composition except for the fat. Canola and soybean oils were combined with milk fat to provide fatty acid ratios of 1:1:1 and 3:2:1 (saturated: monounsaturated:polyunsaturated), whereas the milk fat control had a ratio of 24:8.6: 1. Sensory, physical and chemical tests indicated minimal differences between the control ice cream and the dessert with the 3:2:1 ratio. However, product with the 1:1:1 ratio was described as oily and oxidized in flavor. It melted faster, was softer in the penetration test and coarser in texture than the ice cream control.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1994.tb14682.x
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  • 4
    Electronic Resource
    Electronic Resource
    Zone-melting recrystallization with enhanced radiative heating for preparation of subboundary-free silicon-on-insulator thin films (1989)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 55 (1989), S. 1238-1240 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A new zone-melting-recrystallization (ZMR) configuration with enhanced radiative heating has been developed for preparing silicon-on-insulator (SOI) films. With this configuration, in which the sample is positioned above the movable heater with the SOI film facing downward, subboundary-free 0.5-μm-thick SOI films are obtained over a much wider range of experimental parameters than with the conventional ZMR configuration. The characterization of these films by defect etching, optical microscopy, and transmission electron microscopy shows that the principal defects are isolated threading dislocations with a density of ∼106 cm−2. It should be possible to improve the material quality still further by optimizing experimental conditions for the new configuration.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.102465
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  • 5
    Electronic Resource
    Electronic Resource
    Cellular and dendritic morphologies on stationary and moving liquid-solid interfaces in zone-melting recrystallization (1987)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 51 (1987), S. 685-687 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: It is well known that when Si films are radiatively heated there exists a range of incident intensities for which liquid and solid regions coexist at near uniform temperature. Based on in situ microscopic observation of solidification interface morphologies, we argue that this phenomenon is responsible, at least in part, for the morphology of the liquid-solid interface in zone-melting recrystallization. We demonstrate this effect through stationary interface experiments. It is observed that even a stationary interface exposed to a gradient in radiation intensity develops interface morphologies similar to those of moving interfaces.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.98334
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  • 6
    Electronic Resource
    Electronic Resource
    Thickness and aspect-ratio dependence of the magnetoresistance effect in NiCo alloy films (1990)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 67 (1990), S. 4895-4897 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Films of thickness 350, 500, and 1100 A(ring) rf-magnetron-sputtered onto Corning 7059 glass at a substrate temperature of 250 °C were patterned into aspect ratios of from 10 to 100 with a fixed width of 10 μm by the photolithographic procedure. Gold pads were formed for electrical contacts. Magnetoresistance ratio, saturation field, and in-plane coercivity were measured. The domain patterns were studied by the Bitter method. Results show that the magnetoresistance ratio increases as film thickness increases. In a 500-A(ring)-thick film, the coercivity decreases from 14 to 9.8 Oe with increasing aspect ratio due to closure domain effects.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.344723
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  • 7
    Electronic Resource
    Electronic Resource
    Studies of hydrogen-induced degradation processes in SrBi2Ta2O9 ferroelectric film-based capacitors (1999)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 74 (1999), S. 1162-1164 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: It is known that the forming gas (N2–H2 mixture) annealing process required for microcircuit fabrication results in an unacceptable electrical degradation of SrBi2Ta2O9 (SBT) ferroelectric capacitors due mainly to the interaction of H2 with the ferroelectric layer of the capacitor. We have found a strong relationship between changes in the surface composition of the ferroelectric layer and the electrical properties of SBT capacitors as a result of hydrogen annealing. Mass spectroscopy of recoiled ions (MSRI) analysis revealed a strong reduction in the Bi signal as a function of exposure to hydrogen at high temperatures (∼500 °C). The Bi signal reduction correlates with Bi depletion in the SBT surface region. Subsequent annealing in oxygen at temperatures in the range of 700–800 °C resulted in the recovery of the MSRI Bi signal, corresponding to the replenishment of Bi in the previously Bi-depleted surface region. X-ray diffraction (XRD) analysis (probing the whole SBT film thickness) showed little difference in the XRD spectra of the SBT films before and after hydrogen and oxygen-recovery annealing. The combined results of the MSRI and XRD analyses can be interpreted as an indication that the degradation of the electrical properties of the SBT capacitors, after hydrogen annealing, is mainly due to the degradation of the near surface region of the SBT layer. © 1999 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.123474
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  • 8
    Electronic Resource
    Electronic Resource
    Studies of metallic species and oxygen incorporation during sputter-deposition of SrBi2Ta2O9 films, using mass spectroscopy of recoiled ions (1998)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 72 (1998), S. 2529-2531 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We have recently developed a mass spectroscopy of recoiled ions technique which is suitable for monolayer-specific surface analysis of thin films during growth. We present initial results using this technique to study the effect of different bottom electrode layers on metallic species and oxygen incorporation in the early stages of SrBi2Ta2O3 (SBT) film growth via ion beam-sputter deposition. The work discussed here has been focused on studying the incorporation of Sr, Bi, and Ta during growth of SBT on Pt/Ti/SiO2/Si, Pt/MgO, Ti, and Si substrates. We found that the incorporation of Bi in sputter-deposited SBT films depends critically on the bottom electrode surface composition and the growth temperature. © 1998 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.121409
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  • 9
    Electronic Resource
    Electronic Resource
    Studies of film growth processes and surface structural characterization of ferroelectric memory-compatible SrBi2Ta2O9 layered perovskites via in situ, real-time ion-beam analysis (1996)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 69 (1996), S. 2671-2673 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: In situ, real-time studies of layered perovskite SrBi2Ta2O9 (SBT) film growth processes were performed using a time-of-flight ion scattering and recoil spectroscopy (TOF ISARS) technique. These studies revealed two important features related to the synthesis of SBT films via ion-beam sputter-deposition, namely: (a) atomic oxygen originating from a multicomponent SBT target during the sputtering process is incorporated in the growing film more efficiently than molecular oxygen; and (b) the SBT surface appears to be terminated in an incomplete (Bi2O2)2+layer with a top surface of oxygen atoms, which may be responsible for the high resistance to polarization fatigue exhibited by Pt/SBT/Pt capacitors. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.117554
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  • 10
    Electronic Resource
    Electronic Resource
    Radiative carrier lifetime, momentum matrix element, and hole effective mass in GaN (1997)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 70 (1997), S. 631-633 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: By using picosecond time-resolved photoluminescence we have measured the lifetime of excess charge carriers in GaN epitaxial layers grown on sapphire at temperatures up to 300 K. The decay time turns out to be dominated by trapping processes at low excitation levels. The radiative lifetime derived from our data is dominated by free excitons at temperatures below 150 K, but also clearly shows the gradual thermal dissociation of excitons at higher temperatures. From our data, we are able to determine the free exciton binding energy and the free carrier radiative recombination coefficient. By combining these data with optical absorption data, we find the interband momentum matrix element and an estimate for the hole effective mass, which is much larger than previously thought. © 1997 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.118293
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