• Korean Journal of Heritage: History & Science
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• v.56 no.3
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• pp.196-212
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• 2023

This study identifies the origin of stone remains (pavement and banister stones) excavated from the first burial site of King Jeongjo through petro-mineralogical analysis in a quarry and examines the relationship with the stone remains from Geolleung (King Jeongjo's Tomb). The excavated stones from the first burial site of King Jeongjo are all light gray fine-grained biotite granite, and mainly contain quartz, feldspar, and biotite. The magnetic susceptibility of the stones ranges from 5.55 to 12.10 (average 7.00) (SI unit). According to old documents, the quarrying sites of the stones were Mts. Aengbong and Yeogisan (Godeung-dong District, Suwon), and we found a fine-grained biotite granite outcrop behind Mr. Aengbong (currently the site of Yeonggwang Apartment) with a geological survey, and it was petrologically similar to the stone remains from the first burial site. The magnetic susceptibility of the outcrop rocks was 5.15 to 7.24 (SI unit), and their petro-mineral and geochemical characteristics were found to be the same as those of the first buried site and Geolleung Tomb. It was confirmed that most of the stone elements in the first burial site were reused to build Geolleung Tomb while moving the grave. Only the pavement and banister stones seem to have been discarded in the first grave site without being transferred. This is because the size of the new burial mound became larger than the first grave during construction because Queen Hyoui (the consort of King Jeongjo) died and was buried together with the king in the same tomb, and the stone blocks did not fit a grave that size. With these research results, it was possible to compare and examine the old records and scientific analysis data, and they are expected to be used as basic source material in related research.

• Korean Journal of Heritage: History & Science
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• v.46 no.4
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• pp.160-173
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• 2013

This research aims to understand the precise character of relics based on literature search and material analysis of the jade excavated from the first buried place of King Jung-jo, and to assess the level of damage through non-destructive diagnosis. Furthermore, scientific conservation treatment was used to restore the original shape of the excavated jade. According to literature search, the excavated jade is known to be jasper, but material analysis showed that it was as a serpentine with the mineral composition of antigorite. Infrared thermography analysis to assess deterioration showed that the internal damage is the result of the interstices developed along the boundary surface of the obtained jade. For conservation treatment of the damaged area on the surface, the jade was filled with a mixture of plaster and glue, and covered with a mixture of acrylic paint and gloss medium for protection, and color was adjusted.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.24 no.4
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• pp.53-61
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• 1979

Mixed seeds of Dactylis glomerata, Festuca arundinacea, Trifolium repens, Lolium multiflorum on the improved pasture were sown to investigate the vegetational change during the years of 1971-1978. The dominant species were Dactylis glomerata and Trifolium repens from the first year to the third year, Imperata cylindrica and Trifolium repens in the forth year, Imperata cylindria and Zoysia japonica from the fifth year to the eighth year in the pasture.

• Journal of Digital Convergence
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• v.19 no.2
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• pp.13-19
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• 2021

The purpose of this study is to find a reasonable solution that is compatible with the government's policy on calming the overheated housing market and the needs of prospective home buyers. For this purpose, this study analyzed the current state of the housing market and looked at the root cause of the people's desire to purchase housing. And this study suggested the need to introduce a super-long-term mortgage system that can help people choose whether to own or rent a house in accordance with individual preferences. The super-long-term mortgage system would be useful in that the majority of people who currently use mortgages prefer long-term loan products and that it could provide a chance to "get their own homes" by easing the monthly repayment burden for those who want to have homes. If the system is introduced in the future, it is necessary to make efforts for stable operation such as risk-hedge. In particular, the government should apply a limited application to end-users so that they can curb rising housing prices and contribute to stabilizing housing prices.

• Horticultural Science & Technology
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• v.19 no.4
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• pp.568-573
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• 2001

The effects of foliar spray and soil drench application of triazole chemicals (diniconazole, myclobutanil, difenoconazole, tebuconazole, bitertanol, hexaconazole) on growth and flowering control in zinnia were investigated. For foliar spray application of tebuconazole, diniconazole and bitertanol on 'Dream Land Rose', plant height was decreased but tebuconazole gave the best result for dwarfing. Diameter, fresh and dry weights of flower were markably decreased at high concentration of tebuconazole. However, days to flowering was not affected by chemicals tested. For 'Dream Land Scarlet', plant height was decreased with all chemical treatments. Tebuconazole severely decreased plant height, in particulas. Diniconazole hastened flowering. For soil drench of 'Dream Land Rose', plant height was decreased by diniconazole and mycrobutanil, but diniconazole was more effective for plant height decrease. Flowering was hastened by diniconazole in both 'Dream Land Rose' and 'Dream Land Scarlet'. Plant height of 'Dream Land Scarlet' was decreased by all chemicals tested. Flowering was not occurred at $300mg{\cdot}L^{-1}$ myclobutanil with severe suppression of stem growth.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.29 no.2
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• pp.175-178
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• 1984

Varietal differences, heritabilities and the relationships of the characters including peduncle size of barley cultivars (Hordeum vulgare L.) were studied. Significant difference of the peduncle size was observed among the varieties. Flag leaf size and flag leaf sheath length also showed significant differences among varieties. Heritabilities of broad sense for peduncle length and diameter were 0.9638 and 0.5652. Heritabilities for flag leaf sheath length, flag leaf length and flag leaf width were 0.8143, 0.7929 and 0.8980, respectively. The peduncle length was significantly correlated with peduncle diameter, stem length, flag leaf sheath length, flag leaf length and kernels per spike. However, no relationship existed between peduncle length and spike length.

• Korean Journal of Environment and Ecology
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• v.13 no.3
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• pp.203-208
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• 1999

본 연구는 남한에 자생하는 한국산 복수초를 원예용 경제작물로 개발하고자 수행하였다, 남한의 21개 자생지를 대상으로 분포지역에 따른 개체군의 형질특성을 조사하여 다음과 같이 식물체의개체군 특성에 의해 4가지 유형으로 구분되었다. 강원도의 백두대간을 중심으로 자생하는 복수초군은 개화시기가 가장 빠르고 초장은 15cm이하로 작았으며 꽃받침이 꽃잎에 비해 큰 것이 특징이다 . 화경은 2.73cm 로 다른 복수초들에 비해 소형이다. 중부지방의 광릉 등지에 자생하는 복수초군은 개화시기가 3월 15일경으로 상대적으로 개화시기가 늦다. 화경은 3.67cm로 나타났다. 충청도 및 서해안 등지에 자생하는 복수초군은 개화시기가 빠르고 화경이 6,82cm 로 꽃이 크며 초장이 길어 관상가치가 뛰어나므로 금후 원예금후 원예작물로 개발 가능성이 높다. 제주도에 자생하는 복소초군은 잎과 꽃이 동시에 발달하고 화색은 밝은 황색이며 엽색도 다른 복수초들에 비해 엷은 빛깔의 초록색으로 나타났다. 또한 우리나라에 자생하는 복수초의염색체는 자생지에 관계없이 2n=16으로 조사되었다.

• Horticultural Science & Technology
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• v.17 no.5
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• pp.581-583
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• 1999

This experiment was conducted to investigate the effects of uniconazole drench treatment on the growth and flowering of poinsettia and to suggest proper application dosage and time. Plant height, branch length, and leaf area were significantly restricted as the concentration of uniconazole increased. Application doses of 0.05 and 0.10 mg/pot effectively controlled the growth of poinsettia 'V-10 Amy'. Earlier soil drench of uniconazole resulted in more effective reduction in plant height, branch length, and leaf area. In all cases, no noticeable phytotoxicity by plant growth retardants tested was observed.

• Tunnel and Underground Space
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• v.21 no.4
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• pp.281-286
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• 2011

The west underground express way is a recent initiated BTO (Build-Transfer-Operate) project for releasing heavy traffic of the existing west express way which is notorious on-ground road for extremely traffic stuck area in the west of Seoul, South Korea. The new express way for light vehicles is the first double-deck tunnel ever designed in South Korea and 10.91 km long including both open cut structures and concrete lining with middle-deck in bored tunnel. Because the new express way is going through underground of heavily populated area, mechanical & electrical design for the safety of drivers in tunnel is one of the most important parts among many design issues. This paper discusses M & E design focuses including ventilation-evacuation plan and various safety facilities.

• Horticultural Science & Technology
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• v.17 no.2
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• pp.131-133
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• 1999

The plant height and internodal length of Mentha piperita, Origanum vulgare L., and Thymus vulgaris L. were reduced according to the treatment of 500, 2,500, 5,000 mg/L B-9 and 0.5, 1.0, 5.0 mg/L uniconazole. On the efficiency of dwarfing in 3 herb species, uniconazole was more effective than B-9, but plant height of Thymus vulgaris was more shortened with 2,500mg/L B-9 treatment than 3 levels of uniconazole treatments. Cuttings from 3 kinds of herbs tested were died with 5,000mg/L B-9 treatment. The number of lateral shoots per plant was heighest at control plants and uniconazole was more effective in reducing lateral shoots than B-9. There was no significant difference in leaf growth between B-9. There was no significant difference in leaf growth between B-9 and uniconazole treatments. The root growth of Mentha poperita, Origanum vulare, and Thymus vulagris was not significantly affected by B-9 or uniconazole.