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  • 1
    Electronic Resource
    Electronic Resource
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 109 (1998), S. 1196-1197 
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: A simple mean-field model of azimuthal ordering in Langmuir monolayers induced by anisotropic dispersion forces is presented. The approach is removed from previous studies of this interaction in systems of grafted rods insofar as the tilt of amphiphiles is decoupled from azimuthal ordering and treated as an external variable. We examine the phase space of fixed tilt against temperature, finding that azimuthal ordering is second order for most tilts, except in the range 57°–66°, where it is first order. This is related to the existence of three different types of azimuthal order; polar, nematic, and polar–nematic. © 1998 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 86 (1999), S. 374-379 
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The uniformity of surface layer characteristics of InAlAs Schottky diodes, the so-called level-shift diodes, on InAlAs/InGaAs high electron mobility transistors is noninvasively examined by photoreflectance (PR) spectroscopy, on-wafer mapping of PR signal intensity at a particular wavelength, and analyzed data. From the observed Franz–Keldysh oscillations, we have been able to evaluate the built-in dc electric fields in the i–n+, or so-called UN+, InAlAs Schottky diode layer. The on-wafer fluctuation of the electric fields in the diode layer, which is due to the fluctuation of the thickness of the diode layer, is clearly visualized by on-wafer mapping. Nonuniform composition of the InAlAs diode layers is also observed. The shape of the contour lines in the map of the PR signal intensity is related to the structure of the growth equipment. Our results suggest that photoreflectance mapping is quite effective for noninvasive screening of device epiwafers. © 1999 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1365-2761
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology , Medicine
    Notes: A vital staining technique with fluorescein diacetate (FDA) and propidium iodide (PI) was used for determination of viability of myxosporean stage spores of Myxobolus artus and actinosporean stage spores of M. cultus. Viable spores stained green with FDA and non-viable spores stained red with PI were clearly distinguishable in M. artus myxosporean spores released from live infected fish, while the spores collected from pseudocysts were not well stained with FDA. Immediately after release from the oligochaete, Branchiura sowerbyi, actinosporean spores of M. cultus, stained bright green in the sporoplasms and red in the spore processes. In vitro survivability tests revealed that the longevity of M. artus spores was 5 months at 25°C and 15 months at 18°C. Drying and ultraviolet irradiation (36 000 mW s cm–2 for M. artus myxosporean spores, 600 mW s cm–2 for M. cultus actinosporean spores) were most effective as sporicidal treatments.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1365-2761
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology , Medicine
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1432-0428
    Keywords: Keywords Diabetic nephropathy ; blood pressure ; familial hypertension ; angiotensin-converting enzyme inhibitor ; smoking ; proteinuria.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary A progressive decline in glomerular function occurs in diabetic nephropathy. The predictive effects of progression promoters were examined in 182 non-insulin-dependent diabetic patients from a baseline serum creatinine concentration of 133 μml/l. During a total of 605 person-years follow-up, 107 patients developed end-stage renal failure requiring dialysis. The rate of decline of renal function was highly variable. Urinary protein excretion was the strongest predictor correlated to the rate of decline, followed by diastolic and systolic blood pressure, total cholesterol and platelet count, while the protective effects were seen in serum albumin and haematocrit. Ajustment for urinary protein excretion revealed that diastolic blood pressure, familial predisposition to hypertension, serum albumin, and smoking were independent significant predictors. Angiotensin converting enzyme inhibitors (ACE-I) significantly retarded the development of end-stage renal failure compared to antihypertensives other than ACE-I (mostly nifedipine), and the effect was evident particularly in patients with proteinuria below the median (2.5 g/24 h) (presumably those who responded to ACE-I). A complex effect of proteinuria in association with blood pressure elevation, familial predisposition to hypertension, hypoalbuminaemia, and smoking may play an important role in the progression of nephropathy. [Diabetologia (1997) 40: 405–411]
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Journal of radioanalytical and nuclear chemistry 203 (1996), S. 11-18 
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract In order to study the dissolution behavior of a highly burnt LWR fuel, a fuel pin irradiated in the DR3 test reactor in Risoe National Laboratory, has been characterized by microstructural examination and then dissolved under PUREX type conditions. The dissolution behavior was investigated and the residues analyzed by scanning electron microscopy and by ICP-MS and IDMS after dissolution.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    The European physical journal 9 (1999), S. 377-379 
    ISSN: 1434-6036
    Keywords: PACS. 64.70.Md Transitions in liquid crystals - 68.10.Cr Surface energy (surface tension, interface tension, angle of contact, etc.) - 61.30.Cz Theory and models of liquid crystal structure
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: Capillary waves and director fluctuations reduce the surface tension of a non-anchoring unbound nematic surface by comparable amounts. These are relatively small effects in three dimensions, but in two dimensions they become more significant. We examine the conditions in two dimensions under which they dominate explicitly within the framework of a model of the Maier-Saupe type. We find that for reasonable physical parameters of the model the onset of the fluctuation dominated regime generally preempts the nematic-isotropic transition. We conclude that processes which are sensitive to line tension, such as Ostwald ripening during two-dimensional liquid-gas phase separation, are much more strongly coupled to anisotropic molecular interactions and associated nematic ordering than in three dimensions.
    Type of Medium: Electronic Resource
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  • 8
    ISSN: 1432-8798
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary.  The oral efficacy of chicken egg yolk immunoglobulins (yIg) specific for bovine rotavirus (BRV) serotypes G6 and G10 in protecting neonatal calves was examined in a herd of cattle under field conditions. In one of the three trials, yIg-treated calves tested under high relative humidity (RH) showed a significantly increased mean body weight (P〈0.05) and a decrease in number of calves shedding high titer of BRV (G6) in stool compared to control calves (P〈0.01), suggesting that our yIg product was effective in a field condition with an epidemic outbreak of BRV diarrhea.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Origins of life and evolution of the biospheres 26 (1996), S. 344-344 
    ISSN: 1573-0875
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geosciences
    Type of Medium: Electronic Resource
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