Prenatal exposure to the disruptions caused by the Korean War (1950-1953) negatively affected the individual socioeconomic and health outcomes at older ages. The educational attainment, labor market performance, and other socioeconomic outcomes of the subjects of the 1951 birth cohort, who were in utero during the worst time of the war, were significantly lower in 1990 and in 2000. The results ...

An ethanolic extract of Allium tuberosum Rottl. demonstrated potent choline acetytrasferase (ChAT) activating activity (45%) among 30 screened Korean edible plants. The ChAT activator of A. tuberoum Rottl. was purified and identified as ferulic acid [4-hydroxy-3-methoxycinnamic acid] via silica-gel open-column chromatography, HPLC, EI-MS, and 1H/13C-NMR. The ferulic acid from A. tuberoum Rottl....

The periodic or non-periodic test and maintenance activities in nuclear power plants (NPPs) are essential for stable power production and the sustainment of the plant safety. However, due to NPP system complexity and human limitation in cognition and action, these activities may also have the potential to induce unwanted and unanticipated reactor trip events and may render critical systems unav...

Low-level liquid concentrate wastes including boric acid have been immobilized with paraffin wax using concentrate waste drying system in Korean nuclear power plants since 1995. Small amount of low density polyethylene (LDPE) was added to increase the leaching resistance of the existing paraffin waste form and the influence of LDPE on the leaching behavior of waste form was investigated. It was...

OBJECTIVES This study was intended to analyze the characteristics of infrequent and frequent outpatients visiting Korean medical facilities, and find the related variables of frequent users. METHODS The data source was the Report on the Usage and Consumption of Korean Medicine (2011) published by the Ministry of Health and Welfare and Korea Institute for Health and Social Affairs. We analyzed...

Recently, new methods have been developed for estimating the current and recent changes in effective population sizes. Based on the methods, the effective population sizes of Korean populations were estimated using data from the Korean Association Resource (KARE) project. The overall changes in the population sizes of the total populations were similar to CHB (Han Chinese in Beijing, China) and...

Glyceollins, one of the inducible phytoalexins produced by plants, were induced in a number of varieties of Korean soybean through fungal infection. Of the tested soybean varieties, Tae-Kwang, though not the most productive, was found to be currently the most suitable for the induction of glyceollins. Amongst the fungal species, Rhizopus microsporus var. oligosporus was seen to be the most effe...

This study examined how motivation for learning English, the amount of contact with English, and  length  of  residence  in  the  target language area affects Korean graduate students’ English pragmatic skills. The study attempted to account for differential pragmatic development among 50  graduate-level  Korean  students  in  relation  to  individual  factors  mentioned  above.  The  data were...

Using firm-level panel data for Korean MNEs, we make a distinction between being the only affiliate of a parent firm and being the one of the multiple affiliates of a parent firm. Comparisons of correlations between purchases and sales of each group of the foreign affiliates show distinctive difference in the motivations of FDI and the multinational activities, due to the difference in the numb...