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  • Korea  (2)
  • permeability
  • Springer  (3)
  • American Geophysical Union (AGU)
  • 1995-1999  (3)
  • 1990-1994
  • 1999  (3)
Collection
Publisher
  • Springer  (3)
  • American Geophysical Union (AGU)
Years
  • 1995-1999  (3)
  • 1990-1994
Year
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Asia Pacific financial markets 6 (1999), S. 221-233 
    ISSN: 1573-6946
    Keywords: book-to-market ; explanatory factors ; Korea ; stock returns
    Source: Springer Online Journal Archives 1860-2000
    Topics: Economics
    Notes: Abstract This study examines relations between stock returns and potential explanatory factors in Korea, an important and segmented emerging market. Our results show that Korean stock returns in general and returns on stocks listed in Section 1 in particular are significantly positively related to book-to-market, sales-price, and debt-equity ratios, but not significantly related to market value of equity. Returns on stocks listed in Section 2 are, however, negatively related to market value of equity and not significantly related to the other three variables. Among the variables investigated by us, book-to-market ratio has the greatest explanatory power for stock returns and it indicates superior returns for value stocks. Our findings strengthen the international evidence of the role of book-to-market ratio in explaining stock returns by demonstrating its significance even in the segmented Korean market.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1573-904X
    Keywords: Cereport ; bradykinin B2 receptor ; human ; brain endothelium ; permeability
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Purpose. To study Cereport (RMP-7, bradykinin B2 agonist) effects on human brain microvascular endothelial cell (HBMEC) monolayer permeability. Methods. HBMEC grown on transwell membranes were exposed to Cereport. The monolayer permeability was determined with [I4C]-inulin (MW. 5,200) and [3H]-dextran (MW. 70,000). Results. Cereport increased the HBMEC permeability to [l4C]-inulin, but not to [3H]-dextran. The effect was transient, maximal at 15 min (i.e., 79.3% increase), and polarized to the basolateral membrane. An inverted U, dose-response curve was observed with active concentrations of Cereport from 0.01 to 0.5 nmol/L, the plateau maximal effect between 0.5 and 10 nmol/L, and loss of activity at the highest concentration, i.e., 20 nmol/L. Cyclic AMP-specific phosphodiesterase 3 (PDE3) inhibitor rolipram (10 μmol/L) abolished Cereport effects, while cGMP-specific PDE5 inhibitor, zaniprast (50 μmol/L) enhanced by 31 % (p 〈 0.05) the effect of 0.1 nmol/L Cereport. Unlabeled Cereport displaced [12 5I]-bradykinin and/or [125I]-Cereport from the basolateral side. There was no specific Cereport binding to the apical side. Conclusions. Cereport exerts specific time, dose and size dependent actions on HMBEC monolayer that are restricted to the basolateral membrane. Its effects can be further modulated through changes in cAMP and cGMP second messenger systems.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Journal of human genetics 44 (1999), S. 30-34 
    ISSN: 1435-232X
    Keywords: Key words Congenital malformations ; Genetic diseases ; Prevalence ; Infant ; Korea
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract A nationwide investigation of congenital malformations and genetic diseases in Korea was conducted by analyzing Medical Insurance data for infants aged under 1 year. Medical Insurance data were obtained for 1993 and 1994 and the ICD-9 (International Classification of Diseases, Ninth Revision) code was used to classify the diseases. The coverage rate of medical insurance was approximately 95% of the total population. Anomalies of the cardiovascular, musculoskeletal, and gastrointestinal systems, in descending order of frequency, were more frequent than anomalies in other systems. The average prevalence of cardiovascular anomalies for 1993 and 1994 was 15 per 1000 infants, and ventricular septal defect, with an average prevalence of about 3.50 per 1000 for 1993 and 1994, was the most frequent cardiovascular anomaly in infants. Polydactyly was the most frequent musculoskeletal anomaly, with an average prevalence, for 1993 and 1994, of about 1.20 per 1000 infants. Anencephaly had the highest frequency of nervous system anomalies. Congenital hypertrophic pyloric stenosis was the most common of the gastrointestinal anomalies. The prevalence of the congenital malformations and genetic diseases examined was similar to that reported in other countries. Total medical expenses for the care of patients with each disease entity were also estimated. The highest medical expenses were incurred for ventricular septal defect, congenital coagulation factor VIII disorders, atrial septal defect, tetralogy of Fallot, and spinal anomalies, in descending order of magnitude. This investigation could be helpful in planning social welfare systems, as well as for elucidating the current status of congenital malformations and genetic diseases in Korea, and in other Asian countries.
    Type of Medium: Electronic Resource
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