• Polymer Science and Technology
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• v.12 no.4
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• pp.519-526
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• 2001

• Korean Journal of Heritage: History & Science
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• v.4
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• pp.69-79
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• 1969

• Proceedings of the Korean Society of Crop Science Conference
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• 2022.10a
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• pp.263-263
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• 2022

물봉선속(Impatiens L.)은 일년생 또는 다년생 초본으로 우리나라에 5-7종이 분포한다. 물봉선의 화장품용 항산화제 및 천연 방부제로서의 유용성이 밝혀졌으며, 최근 항염, 항산화 등 생리활성에 대한 연구가 국내 자생하는 물봉선 및 노랑물봉선을 대상으로 수행된 바 있으나 이하 분류군에 대한 연구는 미비한 실정이다. 본 연구에서는 국내 자생하는 물봉선속 분류군들의 항산화활성과 생리 활성물질의 함량을 분석하고 지역 간 분류군별 차이를 확인하고자 하였다. 따라서 국내 자생하는 물봉선속 분류군들의 항산화활성을 검정하기 위하여 DPPH, ABTS, TPC, TFC 4가지 방법을 이용하여 분석하였다. 국내 자생하는 물봉선속 5분류군 가야물봉선(Impatiens atrosanguinea (Nakai) B.U.Oh & Y.P.Hong), 노랑물봉선(Impatiens noli-tangere L), 물봉선(Impatiens textorii Miq), 미색물봉선(Impatiens noli-tangere var. pallescens Nakai), 처진물봉선(Impatiens furcillata Hemsl)이 12개 지역에서 수집되었으며, 잎 추출물(70% 에탄올)에 대해 분석되었다. 물봉선속 분류군들의 잎 추출물의 DPPH 라디칼 소거 활성 검정 결과 가야물봉선(4.91 ± 3.00 mgAAE/g)이 가장 높았고 처진물봉선(1.77 ± 0.55 mgAAE/g)이 가장 낮았으며, ABTS의 경우 가야물봉선(3.14 ± 1.35 mgAAE/g)로 가장 높았고 미색물봉선(1.87 ± 0.16 mgAAE/g)이 가장 낮았다. TPC의 경우 미색물봉선(5.48 ± 1.05 ugGAE)이 가장 높았고 노랑물봉선(2.78 ± 1.98 ugGAE)이 가장 낮았으며, TFC의 경우 물봉선(0.70 ± 0.20 ugGAE/g)이 가장 높았고 노랑물봉선(0.45 ± 0.08 ugGAE/g)이 가장 낮게 나타났다. 수집지역별로는 각각 DPPH와 ABTS의 경우 노랑물봉선, TPC의 경우 가야물봉선, 노랑물봉선, 물봉선, TFC의 경우 처진물봉선이 지역별 차이를 보였다. 이번 연구 결과를 토대로 국내 자생하는 물봉선속 분류군 별 항산화활성과 생리활성물질 차이를 확인할 수 있었고 추후 유용 소재로써의 이용과 우수 개체선발에 도움이 될 것으로 사료 된다.

• Journal of Digital Convergence
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• v.19 no.12
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• pp.115-124
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• 2021

The purpose of this study was to investigate the relationship between the characteristics of beauty information in the SNS environment and consumer attitudes and loyalty of high school students. The subjects of this study were high school students residing in Gwangju, and a total of 375 copies were used for the final analysis. The collected data were analyzed using SPSS V.21.0 program. Summarizing the study results, interactivity and usefulness were key factors in the relationship between beauty information characteristics and high school students' attitude and loyalty in the SNS environment, and information provision, playfulness, and vitality were derived as major factors. Based on the above result rule, it is expected that it will be used as a data for presenting the direction for collecting the correct information in the SNS use of teenage consumers and establishing marketing strategies for beauty companies.

• The Journal of the Petrological Society of Korea
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• v.19 no.1
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• pp.19-30
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• 2010

The Jurassic Daebo Ogcheon granite is distributed in the Ogcheon area which is located in the central part of the Ogcheon Belt, Korea. This paper newly examines the timing of Honam shearing on the basis of the petrofabric researches on the deformation structures of the Ogcheon granite. The structural shape of Ogcheon granite is mainly characterized by a wedge shaped of E-W trend and an elongate shape of ENE trend in geological map and by contacts parallel to the regional S1 foliation in the host Ogcheon supergroup. It indicates that the pluton was permittedly emplaced after the S1 formation. The main deformation structures are marked by a solid-state tectonic foliation of N-S trend, which passes through the contact of the pluton, and by an aplitic dyke of E-W trend, and by sinistral, NW and E-W oriented shear zones on the eastern border of the pluton. The petrofabric study on the main deformation structures suggests that the tectonic foliation and the aplitic dyke were formed by the Honam dextral strike-slip shearing of (N)NE trend at ca. $500{\sim}450^{\circ}C$ deformation temperature, and that the sinistral shear zones could be induced by the dextral rotation of the pluton from its original site of intrusion, that is, by the shear strain which is due to sliding of the pluton past the host rocks. The history of emplacement and deformation of the Ogcheon granite and the previous results on the timing of Honam shearing would be newly established and reviewed as follows. (1) Early~Middle Jurassic(187~170 Ma); intrusion of syntectonic foliated granite related to Early Honam shearing, (2) Middle Jurassic(175~166 Ma); main magmatic period of Jurassic granitoids, the permitted emplacement of the Ogcheon granite, (3) Middle~Late Jurassic(168~152 Ma); main cooling period of Jurassic granitoids, the deformation of the Ogcheon granite related to Late Honam shearing. Thus, this study proposes that the Honam shear movement would occur two times at least during 187~152 Ma (ca. 35 Ma) through the intertectonic phase of 175~166 Ma.

• Proceedings of the Korea Water Resources Association Conference
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• 2019.05a
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• pp.329-333
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• 2019

안전한 수공구조물의 설계를 위하여 가장 큰 홍수량이 유발되는 지속시간 즉, 임계지속시간을 적용할 필요가 있다. 임계지속시간은 유역의 지형 인자 특성에 따라 상이 하다. 다양한 연구자들에 의하여 임계지속 시간은 유역의 지형 인자를 고려하여 추정할 수 있고, 이의 추정에 지형 인자를 고려하는 것이 합리적인 것으로 제안하였다. 본 연구에서는 기존에 발표된 임계지속시간 추정에 관련된 연구 성과를 분석하고, 이를 토대로 다양한 지형특성을 포함하고 있는 유역의 하천에 대하여 지형 인자가 임계지속시간을 추정에 기여하는 중요도를 분석하였다. 각 지형 인자의 중요도 판단 지표로는 베타계수를 활용하였다. 형상계수의 크기에 따라 지형 인자의 중요도는 상이 하였다. 임계지속시간을 지형 인자를 활용하여 회귀모형으로 추정할 때 각 인자의 중요도를 고려하여 변수를 선택하면 상관성이 향상될 수 있을 것으로 기대된다.

• Korean Journal of Breeding Science
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• v.40 no.3
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• pp.308-313
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• 2008

"Jeokjoong", a white winter wheat (Triticum aestivum L.) variety was developed from the cross "Keumkang"/"Tapdong". "Jeokjoong" is an awned, semi-dwarf and soft white winter wheat, similar to "Keumkang" (check variety). The heading and maturing date of "Jeokjoong" were similar to "Keumkang". Culm and spike length of "Jeokjoong" were 78 cm and 7.5 cm, similar to "Keumkang". "Jeokjoong" had lower test weight (800 g) and lower 1,000-grain weight (40.1 g) than "Keumkang" (811 g and 44.0 g, respectively). It had resistance to winter hardiness, wet-soil tolerance and lodging tolerance. "Jeokjoong" showed moderate to scab in test of specific character although "Keumkang" is susceptible to scab. "Jeokjoong" had lower flour yield (69.2%) and ash content (0.36%) than "Keumkang" (72.0% and 0.41%, respectively) and similar flour color to "Keumkang". It showed lower protein content (8.9%) and SDS-sedimentation volume (36.8 ml) and shorter mixograph mixing time (3.5 min) than "Keumkang" (11.0%, 59.7 ml and 4.5 min, respectively). Amylose content and pasting properties of "Jeokjoong" were similar to "Keumkang". "Jeokjoong" had softer and more elastic texture of cooked noodles than "Keumkang". Average yield of "Jeokjoong" in the regional adaptation yield trial was 6.19 MT ha-1 in upland and 5.33 MT/ha in paddy field, which was 19% and 16% higher than those of "Keumkang" (5.21 MT/ha and 4.58 MT/ha, respectively). "Jeokjoong" would be suitable for the area above the daily minimum temperature of $-10^{\circ}C$ in January in Korean peninsula.

• Korean Journal of Breeding Science
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• v.40 no.2
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• pp.153-158
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• 2008

"Baegjoong", a white winter wheat (Triticum aestivum L.) cultivar was developed by the National Institute of Crop Science, RDA. It was derived from the cross "Keumkang"/"Olgeuru" during 1996. "Baegjoong" was evaluated as "Iksan307" in Advanced Yield Trial Test in 2004. It was tested in the regional yield trial test between 2005 and 2007. "Baegjoong" is an awned, semi-dwarf and soft white winter wheat, similar to "Keumkang" (check cultivar). The heading and maturing date of "Baegjoong" were similar to "Keumkang". Culm and spike length of "Baegjoong" were 77 cm and 7.5 cm, similar to "Keumkang". "Baegjoong" had lower test weight (802 g) and lower 1,000-grain weight (39.8 g) than "Keumkang" (811 g and 44.0 g, respectively). It had resistance to winter hardiness, wet-soil tolerance and lodging tolerance. "Baegjoong" showed moderate to pre-harvest sprouting (23.9%) although "Keumkang" is susceptible to pre-harvest sprouting (38.9%). "Baegjoong" had similar flour yield (72.4%) and ash content (0.41%) to "Keumkang" (72.0% and 0.41%, respectively) and similar flour color to "Keumkang". It showed lower protein content (8.8%) and SDS-sedimentation volume (35.3 ml) and shorter mixograph mixing time (3.8 min) than "Keumkang" (11.0%, 59.7 ml and 4.5 min, respectively). Amylose content and pasting properties of "Baegjoong" were similar to "Keumkang". "Baegjoong" had softer and more elastic texture of cooked noodles than "Keumkang". Average yield of "Baegjoong" in the regional adaptation yield trial was $5.88\;MT\;ha^{-1}$ in upland and 5.35 MT ha-1 in paddy field, which was 13% and 17% higher than those of "Keumkang" ($5.21\;MT\;ha^{-1}$ and $4.58\;MT\;ha^{-1}$, respectively). "Baegjoong" would be suitable for the area above the daily minimum temperature of $-10^{\circ}C$ in January in Korean peninsula.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.40 no.3
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• pp.269-277
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• 1995

This experiment was conducted to study on forage utility of native grasses in polderland for salt tolerance plant selection and good feed with collection and evaluation. As the result of investgate, it was carried out feed evaluation, germination physiology and early growth at the different salt content of Puccinellia coreesis Honda and P. nipponica Ohwi from May 1993 to June 1994. Germination physiology of the grasses was light and low temperature favored optimum germination temperature was 1$0^{\circ}C$, germination period was 30 days. Dormancy awakening was needed wet and high temperature condition with 1~3 days storage. Germination rate increased 18.0% of P. coreensis and 39.0% of P. nipponica than those of non treatments. Early growth condition of different salt content was good also at in 1.00% and 0.50% levels of P. coreensis and P. nipponica. Crude protein content was 8.4% at P. coreensis, 7.1% at P. nipponica and 10.3% of Italian ryegrass, and NFE content was arrangement in order of P. coreensis, Italian ryegrass and P. nipponica. TDN content was not different between P. coreensis, P. nipponica and Italian ryegrass. Also P. coreensis and P. nipponica have a good taste for cattle as same as other crops.

• The Science & Technology
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• v.17 no.12 s.187
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• pp.57-61
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• 1984

이 논문은 한국과학기술단체총연합회주최로 지난 11월23일 - 24일 2일간 열렸던 "바이오에너지와 에너지정책심포지엄"에서 발표된 요지이다.