• KOREAN JOURNAL OF CROP SCIENCE
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• v.23 no.1
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• pp.51-54
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• 1978

3∼6m long plot with 3-4 replications will be practical for yield trials in the early hybrid generations. The C. V. values with 9m long plot was about 6.6％ in variety Yudal and 13.9％ in 12m plot. These results indicate that 9-12m plot with 3-4 replications could be employed in securate yield test in the advanced generations.

• Korean Journal of Plant Resources
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• v.23 no.1
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• pp.19-24
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• 2010

This study was conducted to clarify effects on the germination, survival rate of seedlings, growth and variation induction of variants in gamma rays irradiated seed of lilac pink (Dianthus superbus var. longicalycinus) and nursery spiraea (Caryopteris incana). Seed germination and its germination rate were delayed over 90 Gy for lilac pink and 80 Gy for nursery psiraea. Fifty percent lethal time (LT50) level for lilac pink and nursery psiraea were 150 Gy and 100 Gy, respectively. Lilac pink and nursery psiraea were grown dwarf over 120 Gy treatment. We have produced 17 variants of lilac pink in $M_1$ generation, and selected the promising 4 variants in $M_2$ generation. We have also made 7 variants of nursery psiraea in $M_1$ generation, and selected the favorable 8 variants in $M_2$ generation.

• Science of Emotion and Sensibility
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• v.26 no.1
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• pp.3-16
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• 2023

This study investigated how COVID-19 imparted the fashion expenditure of households in Korea. During the COVID-19 pandemic, the ratio of fashion expenditure to household income and the ratio of fashion expenditure to household consumption expenditure were estimated using secondary data of national statistics. The household income and expenditure data in Korea were extracted from 2018 to 2021. The household was categorized by generations such as gen Z, gen M, gen X, Baby Boomer, and Silent generation, and the household income status was identified by the income quintile. The outcome revealed that the ratio of fashion usage expenditure to income decreased following COVID-19 equated to before COVID-19 and revealed the significant differences by income quintile. The ratio of fashion consumption to household expenditure significantly differed between the pre-COVID-19 and the post-COVID-19. The difference in the ratio of fashion consumption to household expenditure was important by generations, and it was not affirmed by the income quintile.

• Journal of the Speleological Society of Korea
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• v.18 no.19
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• pp.52-88
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• 1989

정선군 정선읍 봉양6리에 소재한 석회암동굴로서 높이 4m, 폭이 3.5m 금장이 100m이고 세대 부락에서 1km떨어진 해발 550m지점에 자리잡고 있다. 입구에서 커다란 광장이 나타났다. 좀 더 들어가면 다른 광장이 나타나는데 광장 끝 부분에 못이 있는데 바닥은 모래로 되어있다.(중략)

• Electronics and Telecommunications Trends
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• v.23 no.6
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• pp.2-11
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• 2008

태양전지는 태양광을 직접 전기로 변환하는 반도체 소자이다. 태양전지는 효율과 신뢰성이 높은 동시에 저렴한 비용으로 생산할 수 있어야 경제성을 확보할 수 있다. 박막형 태양전지는 제조과정에 에너지가 적게 소요되므로 짧은 기간 내에 투자한 비용과 에너지를 회수할 수 있을 뿐 아니라, 소재 비용도 대폭 줄일 수 있다. 국내에서는 아직 1세대 결정형 실리콘 태양전지 산업이 주류를 이루고 있으며 2세대 기술은 초기 단계에 있으나, 이와 유사한 공정을 사용하는 대면적 디스플레이 생산 설비 및 기술을 기반으로 협력 체제를 구축하여 연구개발을 촉진함으로써 빠른 시일 내에 차세대 태양광 발전 시장에서의 경쟁력을 확보할 수 있을 것으로 기대된다.

• Korean journal of applied entomology
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• v.33 no.4
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• pp.242-249
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• 1994

These studles were conducted to investigate the development of chem~cal resistance and cross.resista. nce m dlarnondback moth (Piuteiia xylostella L). The resistance development of diamondback moth greatly vaned under single selection of five insectlades. The tnflumuron and lambda cyhalothnn strains at 8th selected generation showed 374- and 29.l.fold resistant levels. respectively, as compared with the susceptible strain. However, the Baciilus thuringiensis-seleded at 8th selected generatLon exhibited 240-fold resistant level. and the prothiophos-selected at 8th generation revealed 14.3-fold resistant !eve1 while the cartap hydrochloride-selected at 8th generailon showed 9.1-fold resistant level Prothiophos- selected strain showed low cross-resistance level to cartap hydrochloride, while this strain exhibited no cross-resistance of 1.3 to 2.8-fold to other msectlcides. Cartap hydrochlonde- seleded strain showed 19.9-fold. a high cross-resistance to lambda cyhalothrin, but this strain showed 2.2-34 fold, no cross resistance to other insecticide. Lambda cyhalothnn-selected strain exhibited cross-resistance to cartap hydrochlolide and prothiophas. Triflumuron-seleded strain showed 1.3-4.9 fold. no cross-resistance to other ~nsectic~dTe he B. ihuring~ensis-selededs train showed no cross-resistance to other insecticides.

• The Korean Journal of Mycology
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• v.28 no.1
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• pp.38-40
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• 2000

Anamorph and teleomorph of Diatrype stigma on the bed-log inoculated with oak-mushroom (Lentinula edodes) in Korea were observed and identified. As the characters of anamorph of Diatrype stigma, conidia were hyaline, falcate or slightly curve, and $1{\sim}1.5{\times}12.5{\sim}17.5\;{\mu}m$, and conidia layer was confirmed under the bark. About teleomorph, perithecia $150{\sim}200{\times}450{\sim}500\;{\mu}m$, with ostiole ($30{\sim}40\;{\mu}m$, three- to four-sulcate). Size of ascus containing 8 ascospores was $5{\sim}6{\times}30{\sim}40\;{\mu}m$. Ascospores were hyaline to pale brown, $1.5{\sim}2{\times}5{\sim}7.5\;{\mu}m$ and mostly biguttulate.

• Reproductive and Developmental Biology
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• v.28 no.3
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• pp.203-207
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• 2004

The transgenic mice carrying human Interleukin-10 (hIL-10) gene in conjunction with bovine (3 -casein promoter express hIL-10 in milk during lactation. In this study, stability of germ line transmission and expression of hIL-10 transgene integrated into host chromosome were monitored up to generation F8 of transgenic mice. When male mouse of generation F8 was crossbred with normal females, approximately half of offspring (50.9±5.8%) were identified as transgenic mice. Generation F9 to F15 mice also showed similar transmission rates (66.0±20.1%, 61.5±16.7%, 41.1±8.4%, 40.7±20.3%, 61.3±10.8%, 49.2±18.8% and 43.8±25.9%, respectively), implying that hIL-10 transgene can be transmitted stably up to long term generation in the transgenic mice. Expression levels of human IL-10 from milk of generation F9 to F14 mice were 3.6± 1.2 mg/ml, 4.2±0.9 mg/ml, 5.7±1.5 mg/ml, 6.3±3.5 mg/ml, 6.8±4.5 mg/ml and 6.8±3.1 mg/ml, respectively, which was showed high-level expression compared with that of generation F1 (1.6 mg/ml) mice. In conclusion, our results suggest that transgenic mice can be continuously passed their transgenes to the progeny through the breeding program with the same productivity of human IL-10 protein in their milk.

• Ceramist
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• v.4 no.1
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• pp.46-55
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• 2001

$SiO_2$ 절연막의 우수한 절연특성 및 계면 특성으로 인해 지난 40여년 간 MOSFET 소자에 사용되어 왔으나, 차세대 $0.1{\mu}m$ 소자에서는 direct tunneling에 의한 누설전류가 지나치게 증가하여 더 이상 사용되기가 어렵다. 이에 대한 대안으로 많은 연구 그룹에서 고유전율 박막에 대한 연구를 하고 있으나 아직까지 $SiO_2$와 비교할 만한 탁월한 계면특성을 가진 절연막은 개발되어 있지 않아서, 수년 내에 개발될 $0.1{\mu}m$ MOSFET 소자의 개발에 가장 심각한 기술적 문제로 지적되고 있다. 현재의 연구경향을 종합할 때, $HfO_2$, $ZrO_2$, $HfSiO_x$, $ZrSiO_x$를 이용하여 계면 공정의 최적화를 통해 1-2nm급의 절연막을 구현하고, 1nm급 이하에서는 이보다 더 높은 유전상수를 가지는 재료의 선택과 이를 epitaxy로 성장시키는 방법에 대한 연구가 필수적이다.

• Electrical & Electronic Materials
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• v.20 no.1
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• pp.48-55
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• 2007