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  • 1
    Electronic Resource
    Electronic Resource
    Optical properties of multiple layers of self-organized InAs quantum dots emitting at 1.3 μm (2000)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 77 (2000), S. 2545-2547 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We report the growth and characterization of multiple layers of self-organized InAs quantum dots emitting near 1.3 μm. We analyze their optical properties as a function of the number of dot layers and investigate how the vertical stack modifies the dot size distribution. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1289493
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  • 2
    Electronic Resource
    Electronic Resource
    Femtosecond dynamics and absorbance of self-organized InAs quantum dots emitting near 1.3 μm at room temperature (2000)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 77 (2000), S. 2201-2203 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: High-sensitivity, femtosecond differential transmission measurements on self-organized InAs quantum dots at room temperature allow us to determine the dynamics of resonantly excited electron-hole pairs, as well as the absorbance (α0d) of quantum dots. The room temperature differential transmission signal decreases with a time constant of 65 ps, determined by the rate of excitation from the initial photoexcited states to higher excited states. From the magnitude of the differential transmission, we deduce that the absorbance, and hence the maximum gain/pass in the direction normal to the layers, is (approximate)2.1×10−3 at the spectral peak for our sample with six layers of quantum dots. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1315347
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  • 3
    Electronic Resource
    Electronic Resource
    Kinetics of Solids Leaching During Rehydration of Particulate Dry Vegetables (2004)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 69 (2004), 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: : Air-dried and freeze-dried carrots were rehydrated in a computerized mixing system, and the medium was analyzed for sugar content with high-performance liquid chromatography (HPLC) and for total organic carbon (TOC). Leaching of solids was significant at very short rehydration time. Understanding the mechanism of the leaching process could provide information required for simulation. TOC values were significantly higher than those derived by HPLC, indicating that other organic components were extracted. The difference between TOC and HPLC values varied with time, indicating the existence of a different mass transfer rate. Sugars and TOC values followed an exponential behavior. Quantifying solids leaching is important for modeling and simulation of the rehydration process and for product optimization.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.2004.tb13369.x
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  • 4
    Electronic Resource
    Electronic Resource
    Tuberculosis of the sternum and clavicle: imaging findings in 15 patients (2000)
    Springer
    Skeletal radiology 29 (2000), S. 447-453 
    Details
    ISSN: 1432-2161
    Keywords: Key words Tuberculosis ; Sternum ; Clavicle ; CT ; MRI
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract  Objective. To describe the imaging findings in sterno-clavicular tubercular involvement. Design and patients. Fifteen patients with pathologically proven tuberculosis of the sternum and clavicle were retrospectively evaluated. Routine radiography, computed tomography (CT) and magnetic resonance imaging (MRI) were used in some or all of the patients. Clinical information and imaging features were evaluated in each case. Results. Eight patients had sterno-clavicular joint (SCJ) involvement, five had isolated sternal involvement and two had isolated clavicular involvement. Seven patients were evaluated with only CT, six with only MRI and two with both. There were eight male and seven female patients, varying in age between 16 and 78 years. Fever, swelling and pain were common presenting symptoms. Two patients were HIV positive. Radiographs were positive in only eight patients. Destruction and signal intensity (SI) changes of the sternum and clavicle, destruction of the cartilage, soft tissue changes representing granulation tissue/abscess, displacement of the adjacent structures (vessels, trachea, etc.) and inflammatory changes in the adjacent structures in the form of cellulitis and myositis were common imaging features. Conclusions. All imaging methods can provide complementary information regarding sterno-clavicular tubercular involvement that is helpful for determination of the therapy. MRI is useful in determining the extent of the lesion, particularly marrow involvement and soft tissue extent.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002560000207
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  • 5
    Electronic Resource
    Electronic Resource
    Giant hypothalamic hamartoma with cystic change: report of two cases and review of the literature (2000)
    Springer
    Neuroradiology 42 (2000), S. 648-650 
    Details
    ISSN: 1432-1920
    Keywords: Key words Hamartoma, hypothalamic
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We describe the MRI findings in two patients with giant hypothalamic hamartomas with cystic areas. Cystic change within hypothalamic hamartomas is rarely reported in the literature.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002340000350
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