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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Algorithmica 19 (1997), S. 291-317 
    ISSN: 1432-0541
    Keywords: Key words. Monge arrays, CREW-PRAM algorithms, Hypercubes.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science , Mathematics
    Notes: Abstract. This paper investigates the parallel time and processor complexities of several searching problems involving Monge, staircase-Monge, and Monge-composite arrays. We present array-searching algorithms for concurrent-read-exclusive-write (CREW) PRAMs, hypercubes, and several hypercubic networks. All these algorithms run in near-optimal time, and their processor-time products are all within an $O (\lg n)$ factor of the worst-case sequential bounds. Several applications of these algorithms are also given. Two applications improve previous results substantially, and the others provide novel parallel algorithms for problems not previously considered.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-0533
    Keywords: cGMP ; Globus pallidus ; Iron deposits ; Lipid peroxidation ; Retinal degeneration
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary We have correlated the clinical and histopathologic features of the eyes and central nervous system in a patient with Hallervorden-Spatz syndrome who died at age 11 years. The main ocular findings included degeneration of photoreceptors, marked thinning of the outer nuclear and outer plexiform layers, retinal gliosis, narrowing and obliteration of blood vessel with a perivascular cuffing of pigment cells, and degenerative changes in the retinal pigment epithelia cells with accumulation of melanolipofuscin. The positive findings in the brain included a symmetrical, partially destructive lesion of the globus pallidus, especially in its internal fibers and neurons; in addition, we noted gliosis, widely disseminated axonal spheroidal bodies, which were most numerous in the globus pallidus and pars reticulata, as well as deposits of iron. Our histopathologic findings implicate three possible mechanisms, namely, lipid peroxidation, a deficiency of fatty acid membrane components, and increased cGMP which, either singly or in combination, are responsible for a pathogenesis that is common to the eye and brain in Hallervorden-Spatz syndrome.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Marine biology 121 (1994), S. 61-65 
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The ocypodid crab Ilyoplax pingi, observed in Kanghwa I., Korea in 1992, builds a mound at the burrow entrance, by piling mud dug out from the burrow. The mounds were made by both waving and non-waving males, and by both ovigerous and non-ovigerous females. The burrow diameter at the widest part tended to be larger in crabs with mounds than in crabs without mounds, whereas the burrow depth was not different between them. The mound density increased in the late exposure period, when the crabs' surface activities declined. Mound removal and rebuilding experiments revealed that the presence of the mounds has the effect of keeping neighboring crabs away.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 79 (1996), S. 5357-5357 
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: CoCrTa/Cr/Al and CoCrTa/Cr thin films were deposited on glass substrate at 280 °C using dc magnetron sputtering. The coercivity of CoCrTa/Cr films increased by introducing an Al underlayer. In 500 A(ring) CoCrTa/Cr films, the coercivity increased with increasing Cr thickness and saturated above 700 A(ring) Cr thickness (Hc=1050 Oe). On the other hand, in 500 A(ring) CoCrTa/Cr/700 A(ring) Al films, the coercivity increased sharply with increasing Cr thickness and showed a maximum value at 700 A(ring) Cr thickness (Hc=1380 Oe). The coercivity squareness of the CoCrTa/Cr/Al and CoCrTa/Cr films was increased with increasing Cr thickness. The coercivity squareness of CoCrTa/Cr/Al films was lower than that of CoCrTa/Cr films. To study the origin of coercivity enhancement in CoCrTa/Cr films when deposited on an Al underlayer, microstructures of the two films were investigated using transmission electron microscopy (TEM). We controlled grain sizes of CoCrTa films by changing the thickness of the Cr layer. The grain size of CoCrTa films increased with increasing Cr thickness. The coercivity of CoCrTa/Cr/Al films showed a maximum value at a grain size of 430 A(ring). These results suggest that the transition from single domain to multidomain could occur at a grain size of ∼400 A(ring). To understand the coercivity squareness changes by the introduction of an Al underlayer, the angular variation of coercivity was measured. The magnetization of CoCrTa/Cr films was reversed by domain wall motion.On the other hand, by the incorporation of an Al underlayer, the angular variation of coercivity deviated from the domain wall motion mode. Cross-sectional TEM studies of CoCrTa/Cr/Al films showed that Cr atoms in Cr layers diffused into an Al underlayer and Al atoms were detected in both Cr and CoCrTa layers, but magnetization of the magnetic layer was not decreased. The decrease in coercivity squareness of CoCrTa/Cr/Al films would be attributed to magnetic decoupling by segregation of Al atoms in grain boundaries of CoCrTa films. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 228 (1970), S. 974-976 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The volcanic layer may be only 200 m thick at 45° N and oxidation of titanomagnetite may be responsible for the decrease in amplitude of the magnetic anomalies away from the ridge ...
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 82 (1997), S. 1608-1616 
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We have calculated the energy of three distinct grain configurations, namely, completely connected, partially connected, and unconnected configurations, evolving during a spheroidization of polycrystalline thin film by extending a geometrical model due to Miller et al. to the case of spheroidization at both the surface and film-substrate interface. "Stability" diagram defining a stable region of each grain configuration has been established in terms of the ratio of grain size to film thickness versus equilibrium wetting or dihedral angles at various interface energy conditions. The occurrence of spheroidization at the film-substrate interface significantly enlarges the stable region of unconnected grain configuration thereby greatly facilitating the occurrence of agglomeration. Complete separation of grain boundary is increasingly difficult with a reduction of equilibrium wetting angle. The condition for the occurrence of agglomeration differs depending on the equilibrium wetting or dihedral angles. The agglomeration occurs, at low equilibrium angles, via partially connected configuration containing stable holes centered at grain boundary vertices, whereas it occurs directly via completely connected configuration at large equilibrium angles except for the case having small surface and/or film-substrate interface energy. The initiation condition of agglomeration is defined by the equilibrium boundary condition between the partially connected and unconnected configurations for the former case, whereas it can, for the latter case, largely deviate from the equilibrium boundary condition between the completely connected and unconnected configurations because of the presence of a finite energy barrier to overcome to reach the unconnected grain configuration. © 1997 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Clinical and experimental pharmacology and physiology 14 (1987), S. 0 
    ISSN: 1440-1681
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: 1. Fourteen healthy male volunteers were studied to assess the effects of Panax ginseng on blood alcohol clearance, utilizing each subject as his own control.2. At 40 min after the last drink, the blood alcohol level in the test group receiving ginseng extract (3 g/65 kg body weight) along with alcohol (72 g/65 kg body weight) was about 35% lower than their control values.3. When the blood alcohol level was compared on individual bases, alcohol concentrations in 10 out of 14 test subjects ranged from 32 to 51% lower than their control values.4. These results demonstrate that P. ginseng extract enhances blood alcohol clearance in man.
    Type of Medium: Electronic Resource
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  • 8
    ISSN: 1365-2222
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Background In most epidemiological survey studies, only subjective symptoms and past medical history of asthma have been used as diagnostic criteria. Even though a questionnaire survey can be performed in a large population study at low cost, limitations such as lack of objectivity and poor predictability in non-specific bronchial hyperresponsiveness cannot be avoided.Objectives The purpose of this study was to elucidate the prevalence of current asthma based on questionnaires and methacholine bronchial provocation test, and the prevalence of atopy in Korea.Methods We performed modified ATS respiratory questionnaires and allergen skin-prick test with 10 common inhalant allergens among 3219 subjects aged 7–19 years in Seoul and a rural part of a small city, Chungju in Korea. Methacholine bronchial provocation tests were also performed among those who had asthma symptoms according to the questionnaire. The criteria of asthma was presence of both asthma symptoms and non-specific bronchial hyperresponsiveness. Atopy was defined as when an allergen induced weal size is same or larger than that caused by histamine.Results The prevalence of asthma based on questionnaires and methacholine bronchial provocation tests was 4.6%, while the prevalence of wheeze was 8.2% and 19.3% of total population complained of one or more respiratory symptoms related to asthma on the questionnaires. There was no significant difference according to age, sex and living area. The mean prevalence of atopy was 35.0% and the most common allergens were Dermatophagoides farinae (30.9%), Dermatophagoides pteronyssinus (27.5%), cat fur (20.4%) and cockroach (11.8%). The atopy prevalence in Chungju area was higher than that in Seoul and males showed a higher prevalence than females. The asthma prevalence was higher among atopies (6.8%) than among non-atopies (2.7%). None of questionnaire items were enough to predict the presence of bronchial hyperresponsiveness in terms of sensitivity, specificity and positive predictive value.Conclusion The prevalence rate of current asthma in Korea was 4.6% and the prevalence rate of atopy in Korea was 35.0%. Questionnaire-based surveys are not enough to predict the actual prevalence of asthma.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Science Ltd
    British journal of dermatology 147 (2002), S. 0 
    ISSN: 1365-2133
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Summary We report multiple occurrences of various kinds of tumours that originate from hair follicles in a patient diagnosed with KID (keratitis, ichthyosis, deafness) syndrome. These tumours are diagnosed as: (i) trichilemmal cysts in early lesions; (ii) proliferating trichilemmal tumours in moderate duration lesions; and (iii) malignant proliferating trichilemmal tumours in advanced lesions that are thought to progress from benign trichilemmal lesions. This three-step process raises the hypothesis of a multihit model that could account for the frequent development of tumours in KID patients.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 82 (1997), S. 2933-2937 
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We have investigated the detailed process of agglomeration of TiSi2 thin film on (100) Si substrates as a model system for our recent geometrical model of agglomeration based on the spheroidization at both the surface and film/substrate interface. Agglomeration occurs by a nucleation of holes at grain-boundary vertices as a result of spheroidization at both interfaces and by their subsequent growth along grain boundaries in accordance with the prediction of our model. The critical condition of the ratio of the grain size to film thickness is predicted and confirmed to be between 5 and 6 depending on the magnitude of free-energy barrier. © 1997 American Institute of Physics.
    Type of Medium: Electronic Resource
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