• 한국작물학회지
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• 제35권1호
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• pp.53-57
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• 1990

재래종 연초재배시 곁순제거방법이 수량, 품질 및 내용성분에 미치는 영향을 밝혀 보다 효과적인 곁순제거방법을 구명코자 시험한 결과는 다음과 같다. 1. 적심후 수적아, MH살포구가 타처리에 비하여 수량 및 kg당 가격이 높았고 Fatty alcohol처리는 수량에서 다소 감소하였으며, MS향초, 곁순 방치, 무적심구는 수량 및 kg당 가격이 모두 낮았다. 2. 적심후 수적아, Fatty alcohol 처리구는 무적심 등 타처리에 비하여 회분함량이 낮았고, 환원당, 니코틴함량 및 pH가 높았으며, MH 처리구는 수적아 및 Fatty alcohol 처리에 비해 환원당이 높고, pH와 니코틴함량이 다소 낮았다. 3. 곁순 수제거에 비하여 MH 살포구는 부풀성 및 연소성이 저하되는 경향이였다.

• 유통과학연구
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• 제21권3호
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• pp.123-134
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• 2023

Purpose: The no-contact and economic downturn caused by COVID-19 have further grown the used market. The second-hand trading industry has established itself as a popular consumption culture, leading to exponential growth in the size of the market. This study aims to identify the types of shopping motivation for used products targeting Korean consumers, and to examine the relationship between shopping motivations for second-hand transactions, consumption values, and re-use intentions. Research design, data and methodology: The first study was conducted on 63 used trading platform users and the second study was conducted on 441 used trading platform users to identify the types of consumers' motivation for shopping for used products. Results: As a result of the first study, the shopping motivation types of Korean used product consumers were classified into convenience motivation, economic motivation, hedonistic motivation, information Acquisition motivation, and free time utilization motivation. As a result of the second study, it was found that convenience motivation had the greatest influence on functional values and hedonic motivation had the greatest influence on emotional values, and that functional values had a great influence on platform reuse intentions. Conclusions: This study provides practical implications for the establishment of marketing strategies for used trading platforms and academic implications for research related to used trading.

• 통합자연과학논문집
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• 제17권1호
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• pp.31-41
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• 2024

Calcium ions play an important role in development and intracellular signaling. Dictyostelium discoideum has 14 genes encoding calcium -binding proteins (CBPs), but the function of most CBPs during development has not yet been studied. In this study, we investigated the specific functions of CBP7, one of 14 CBPs, in development using RNA interference cell lines of CBP7, cell lines overexpressing CBP7, cell lines with point mutations in the EF-hand domain, and cell lines expressing fragment proteins. was intended to reveal. CBP7 consists of 169 amino acids and contains 4EF-hand domains. The CBP7-overexpressing cells showed complete loss of developmental process. These cells remained in the single-cell growth stage under development -inducing conditions, while wild-type cells formed aggregations within 6-8h of development and eventually formed fruiting bodies. The experiments using point-mutated CBP7 protein showed that all EF-hand domains of CBP7 were important for CBP7 to function during developmental process. These results suggest that CBP7 plays an important role in developmental processes across all EF-hand domains.

• 대한치과교정학회지
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• 제28권2호
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• pp.285-295
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• 1998

임상 교정에서 성장하는 환자의 성장 단계를 이해하는 것은 매우 중요한 의미를 지닌다. 환자의 골성숙도를 평가하기 위해서 수완부골 방사선 사진이 비교적 흔히 사용되고 있으며, 측모 두부계측 방사선 사진에서 경추골의 발육을 조사하여 성장 정도를 평가할 수 있다. 본 연구에서는 교정 환자에서 일상적 기록으로 얻을 수 있는 측모 두부계측 방사선 사진을 통해 경추골의 성숙도(Cervical Vertebrae Maturation Indicators : CVMI)를 평가하고, 그와 동일 환자가 동일한 날에 촬영한 수완부골 방사선 사진에서 골성숙도(Skeletal Maturity Indicators SMI)를 평가하여 그 분포율과 상관성을 조사, 검토한 결과 다음과 같은 결론을 얻었다. 1. 수완부골 방사선 사진에서 평가한 골성숙도와 측모 두부계측 방사선 사진에서 평가한 경추골 성숙도는 매우 높은 상관 관계를 나타내었다. 2. SMI와 CVMI를 이용한 골성숙도 평가에서 CVMI 1은 SMI 1, 2와, CVMI 2는 SMI 3, 4와, CVMI 3은 SMI 6, 7과, CVMI 4는 SMI 7, 8과, CVMI 5는 SMI 9, 10과, CVMI 6은 SMI 11과 각각 높은 상호 연관성을 보였다. 3. 제 2경추골과 제 3경추골의 형태변화를 분리하여 경추골 성숙도를 평가하였을 때 제 2경추골 하연에서만 곡선화가 나타나고 제 3 경추골에서는 곡선화가 나타나지 않는 경우가 CVMI 2에서는 10.38%로, CVMI 3에서는 6.56%로 매우 낮았다. 4. 수완부골과 경추골에서 평가된 각 골성숙 단계에서 환자의 남녀별 평균 연령과 표준 편차를 조사한 결과 성장 시기의 개인별 차이가 크게 나타났으며, 여자가 남자 보다 다소 조기에 골성숙이 일어나고 성장 종료 시점도 24개월정도 빠르게 일어났다.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2015년도 춘계학술대회
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• pp.391-394
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• 2015

임상에서는 GP-BP (Greulich-Pyle and Bayley-Pinneau) 법과 TW3 (Tanner-Whitehouse 3) 법을 사용하여 골연령을 평가하고 있다. Hand AP 영상에서 골성숙도 평가는 전문의의 임상적 경험에 의해 이루어지며 이는 정성적 평가로 모든 전문의마다 동일하게 적용되지 않고 있는 실정이다. 이러한 실정 속에서 TW3 방법이 아닌 새로운 방법을 고안 및 평가하기 위해 2014년 3월부터 2015년 3월까지 양산P병원에서 성장판 검사를 시행한 소아 70명(남 35명, 여 35명)을 대상으로 TW3에서 골성숙 가중치가 가장 높은 7부위를 선정하여 성장판과 골말단 부위의 길이를 측정하여 골연령별 길이의 차이를 측정하였으며 통계적 유의성을 평가하기 위해 회귀분석을 실시하였다. 각 골연령 마다 특정범위에 상응하는 평균과 표준편차 값이 나타났으며, 골연령이 증가할수록 성장판과 뼈 말단부 길이가 규칙성 있게 감소하였다. 여아의 경우 남아에 비해 골성장이 빠르므로, 남아보다 길이 평균값이 전체적으로 작은 값을 가졌다. 이는 12~14세 초경이 나타남에 따라 초경 전후 길이 감소 변화가 크게 나타났기 때문이다. 그 결과 값으로 회귀분석을 하였으며 도출된 값을 분석한 결과 통계적으로 유의함을 알 수 있었다.

• 한국진공학회:학술대회논문집
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• 한국진공학회 2012년도 제43회 하계 정기 학술대회 초록집
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• pp.162-162
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• 2012

ZnPc and CuPc molecules stacked similar way in the film, but showed different growth modes in thermal evaporation. The distribution of CuPc crystals did not change by the film thickness, whereas the distribution of ZnPc became random as the increase of the film thickness. The disc type nanograins of CuPc were quite regularly distributed at the initial growth regime and the regular distribution of nanograins was kept during the film growth. On the other hand, ZnPc consisted in ellipsoid shaped nanograins and the distribution of nanograins was not regular in the initial growth regime. The irregular distribution of nanograins changed to the regular mode at the later growth regime by showing structure factor in GISAXS measurement. The different initial nanograin distribution in ZnPc and CuPc was related to the different nanostructure in the mixed layer with C60 to form the bulk heterojunction.

• 한국작물학회지
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• 제30권4호
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• pp.368-374
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• 1985

생장조절물질인 GA, Kinetin 및 2,4-D를 농도별로 처리하여 출아 및 생육특성을 조사하므로서 출아에 필요한 장기 저온기간의 단축 가능성을 탐색하였던 바 그 결과를 요약하면 다음과 같다. 1. 신아의 출아는 처리물질중 GA효과가 가장 컸으며 처리농도가 증가할수록 조기출아되어 출아기간이 단축되었고 출아율도 높았다. 2. GA처리는 지상부 생육을 크게 신장시켰으며 특히 경장 엽병장의 신장을 촉진시켰다. 3. GA 50ppm, 100ppm처리구는 근중을 크게 증가시켰다. 4. GA처리농도가 높을수록 조기에 지상부 생육이 완료되었다. 5. 뇌포제거구는 무제거구에 비하여 출아가 다소 빠른 경향이나 생육은 대체로 비슷하였다.

• The Korean Journal of Ecology
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• 제16권3호
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• pp.305-316
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• 1993

Stands profiles, yearly changes in growth of annual rings, age and diameter structure, and spatial distribution pattern of individuals in the Pinus densiflora stands around the Yeocheon industrial complex were investigated. Growth of annual ring in Pinus densiflora, which survived when vegetation of this area was damaged by air pollutants, was suppressed for about 10 years since 1974 when factories in this area began to operate, but since then such suppressed growth tended to be recovered. It was supposed that the suppresed growth was originated from air pollution and that improvement of growth since the suppressed period was due to the release from competition with them by death of neighbouring trees and the resuction of the amount of air pollutants. Physiognomy of Pinus densiflora stands showed mosaic pattern composed of different patches. Spatial distribution pattern of individuals an stand profiles were similar to those of Pinus densiflora stands regenerated after natural and artificial disturbances. In an age distribution diagram, age of Pinus densiflora population ranged from 1 to 33 years, Among these individuals were recrited corresponded to the suppresed period of growth of annual ring in Pinus densiflora survived when the vegetation was damaged by air pollution. On the other hand, from the result of analysis of frequency distribution diagram of diameter, it was postulated that even if whis Pinus densiflora community can be maintained as it is for the time being, it might be changed to Quercus community with the lapse of time.

• Journal of Plant Biotechnology
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• 제30권2호
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• pp.173-177
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• 2003

The effect of IBA and NAA on adventitious root cultures of Panax ginseng C.A. Mater were investigated. Results indicated differences in growth and development of the roots according to 5mg/L IBA and 2mg/L NAA. IBA resulted in a normal root development and a higher growth compared to NAA. The roots formed on NAA-containing media were shorter and thicker than those in IBA, showing a hypertrophy of the root tip. NAA induced more than 1.6 times higher ethylene production compared to IBA, which caused inhibition of the root growth. Under the ventilation, in the other hand, on difference was observed in ethylene concentration and the root growth between IBA and NAA treatments. Under ventilation ethylene production was not detected until 10 days of culture, while detected from the initial stage under on ventilation. The results suggested the importance of ventilation during the culture for the growth and development of ginseng adventitious roots.

• The Korean Journal of Ecology
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• 제21권2호
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• pp.117-124
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• 1998

To clarify the effects of acid precipitates on histological damage, water status, and growth of Pinus densiflora green house experiment applyin simulated acid rain was carried out. Contact angle of water droplet on needles of P. densiflora seedlings treated with simulated acid rain of different pHs simulated acid rain was, the more rapid transpiration was. Leaf water potential after water withdrawal was also reduced rapidly in proportion to acidity of simulated acid rain. Height growth of P. densiflora seedlings treated with simulated acid rain of pH 2 decreased, while growth of seedlings treated with that of pH 3 and 4 increased comparing with that treated with normal rain of pH 5.6. pH of cultivated soil in pH 2 plot was acidified with the amount of simulated acid rain applied but that in pH 3 and 4 plots did not show any directional change. From those results, it could be interpreted that decrease of height growth in pH 2 plot was originated from multiple effects of water deficit from rapid transpiration and soil acidification. On the other hand, increased of height growth in pH 3 and 4 plots would be originated from the supply of N and S included in simulated acid rain.