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김영걸,김방순,이유신 ( Young Gull Kim,Bang Soon Kim,Yoo Shin Lee ) 대한피부과학회 1991 대한피부과학회지 Vol.29 No.6
We report a case of tufted hair folliculitis which developed in 42-year-old female patient and suggest that compound follicles with staphylococcal infection play a significant role in its pathogenesis and that electrolysis may be one of the effective creatment modalities.
김영걸(Young Gull Kim),이애영(Ai Young Lee),조광현(Kwang Hyun Cho),이유신(Yoo Shin Lee) 대한피부과학회 1993 대한피부과학회지 Vol.31 No.1
We report a case of fibroma of tendon sheath developed in a 22-year-old woman. The tumor of about 5 years duration was protruding on the volar surface of her 4th finger tip. It was well-demarcated rubbery-hard, and immovable on palpation. The surface on the tumor was smooth and had some telangiectasias. It was asymptomatic and non-tender. The histopathologic findings of excised specimen revealed well-demarcated lobulated mass with widely-spacd: fibroblasts in a hyalinized collagenous matrix. The characteristic slit-like spaces were found in hypoellular and fasciitis-like region. After excision, local recurrence has not been observed for about one and a half years of follow-up period. (Kor J Dermatol 1993; 31(1): 131-133)
이진호(Jin-Ho Lee),이민석(Min-Seuk Lee),이정대(Jung-Dae Lee),유주(Ju Yoo),고광섭(Kwang-Sup Ko),김영걸(Young-Gul Kim) 한국차학회 2007 한국차학회지 Vol.13 No.3
차나무에서 가을정지 시기가 다음해 첫물차의 생육과 품질에 미치는 영향을 구명하기 위하여 조생, 중생, 만생의 3품종에서 가을정지를 9/26, 10/6, 10/16, 10/26로 처리시기를 달리하여 생육특성과 품질을 평가하였다. 품종의 조만성에는 상관없이 모든 품종에서 가을정지 시기가 빠를수록 아장과 백아중의 증가가 빨리 진행되었다. 가을정지 시기가 빠를수록 첫물차 개엽수의 진행도 빨리 진행되어 성숙도가 높아졌으며 수량도 많아졌다. 반면에 품질면에서는 가을정지 시기가 빠를수록 품질과 정의 상관관계가 높은 전질소, 유리아미노산, 데아닌의 함량은 낮아지고 부의 상관관계가 있는 섬유소의 함량은 높아짐을 알 수 있었다. 또한 가을정지 시기를 조절함에 의해서 품종의 조만성을 극복할 수 있을 정도로 생육의 진행도를 변화시킬 수 있을 것으로 판단되었다. This study was conducted to determine the autumn skiffing time on growth and quality of first crop tea in three cultivars(Camellia Sinensis var. Sayamakaori, Yabukita, Kanayamidori). The autumn skiffings of four different times, such as 26 Sepember, 6 October, 16 October and 26 October, were conducted. According to the experiment, the earlier skiffing time was, the earlier increase pattern of bud length and bud weight in first crop tea that we could get in all tea cultivars. The result suggested that at the early skiffing time, the number of opened leaves and yield got higher. Contrarily, in a quality of first crop tea, the chemical constituents(total nitrogen, free amino acids, theanine) content that had positive correlation to green tea quality showed a lower response to earlier autumn skiffing time. But the chemical constituent(neutral detergent fiber) content that had negative correlation to green tea quality also showed a higher response. In conclusion, varying skiffing time is recognized to control growth, yield and quality of first crop tea as surpass earliness of tea cultivars.
산림토양의 산성화 민간도에 대한 실험적 평가 ( 2 ) - 추출성 황산이온 ( SO42- ) 함량과 황산이온 흡착능의 활용 -
이승우(Sung Woo Lee),이충화(Choong Hwa Lee),변재경(Jae Kyoung Byun),김영걸(Young Kul Kim) 한국산림과학회 2001 한국산림과학회지 Vol.90 No.4
The extractable sulfate content and sulfate adsorption capacity in soils of four Pinus densiflora stands were measured to assess the soil acidification sensitivity to acid deposition. The soluble sulfate content in organic horizon which reflects the previous deposition of sulfur oxides was much higher for Namsan and Ulsan than Kanghwa and Hongcheon. In mineral soils, however, the extractable sulfate content was the greatest for Ulsan followed by Kanghwa, Namsan and Hongcheon due to the interactive effect of previous deposition and soil adsorption of sulfate. Adsorption rates of specifically adsorbed sulfate(proportion of insoluble sulfate to total extractable sulfate) for Namsan, Kanghwa and Ulsan affected by acid deposition were 16.6%, 56.8% and 37.4%, respectively, so that the soil in Namsan had the highest acidification sensitivity to acid deposition. For sulfate adsorption isotherm(RE = mX_i - b), the significantly positive correlations between added sulfate(X_i) and adsorbed sulfate(RE) were found only in mineral soil(p$lt;0.05) over all regions. The regression coefficient(m) that means soil sulfate adsorption capacity by 0-30㎝ depth was 0.16, 0.24, 0.25 and 0.32 in mmol_c ㎏^(-1) for Namsan, Kanghwa, Ulsan and Hongcheon, respectively, indicating that soil acidification sensitivity is the highest for Namsan. The added sulfate(X_i) that could make the adsorbed sulfate(RE) null was 3.81, 2.17, 4.96 and 0.65 in mmol_c ㎏^(-1) for Namsan, Kanghwa, Ulsan and Hongcheon, respectively and the values of former three regions considerably exceeded the realistic sulfate deposition.
차나무(Camellia sinensis)에서 剪枝처리의 强度와 時期가 생육 및 품질에 미치는 영향
이진호(Jin-HO Lee) · 이민석(Min-Seuk Lee) · 이정대(Jung-dae Lee) · 유주(Ju Yoo) · 김영걸(Young-Gul Kim) 한국차학회 2006 한국차학회지 Vol.12 No.2
Pruning is one of the most effective techniques in the tea cultural practice that controls the formation of trunks and branches. In order to find out the suitable intensity and time for pruning, we had tea plants pruned at two different times varying the pruning intensity : tea plants were first pruned at a height of 50cm, 60cm, and 70cm from the surface of the earth respectively on May 30th, 2004, which was 15 days later after the first tea crop, and the second pruning was done at a height of 50cm, 55cm, 60cm, and 65cm from the surface of the earth on July 11th, 2004, 15 days later after the second tea crop. According to the experiment, the more intensive pruning was, the longer bud length and the more opened leaves we could get regardless of the time. It also showed the result that as a pruning position was lowered, the sprouting rate got higher. In addition, the first tea crop showed a lower response to higher pruning intensity, while the yield at the unit area(20cm 20cm) increased except 50cm pruning after the second tea crop. Finally, both the whole and unit area yield turned out to be low when pruned below 50cm after the second tea crop. Therefore, it is considered as a noneffective pruning condition. In conclusion, varying pruning conditions is not recognized to affect on the quality of the first tea crop, because there is no meaningful correlation between chemical component content of tea leaves and different pruning conditions.
양희범(Hee-Beom Yang),이성철(Seong-Cheol Lee),김세림(Se-Lim Kim),이민석(Min-Suk Lee),이진호(Jin-Ho Lee),김태춘(Tae-Choon Kim),김영걸(Young-Gul Kim),송관정(Kwan-Jeong Song) 한국차학회 2008 한국차학회지 Vol.14 No.2
차에서 효율적인 교배육종 시스템을 확립코자 몇 가지 교배조합에서의 연차 간 결실율과 종자 형성율을 평가하였다. 10% 자당, 2% 한천, pH 5.6의 화분 발아 배지에서의 화분 발아 검정은 인공교배에 이용한 화분의 활력이 정상적이었음을 나타냈다. 인공교배 3일 후 이내에 화분관은 화주를 통해 자방의 상단을 침입하는 것으로 나타났다. 교배조합에 따른 결실율은 3.7~57.7%, 열매 당 종자 수는 1.4~3.0 개 내외를 나타냈다. 연차 간 변이에 있어서 열매 당 종자 수의 변이는 미미했고, 결실율의 변이는 다소 크게 나타났다. 자방은 3개의 심실로 구성되고 심실 당 4개의 배주가 위치하여 총 12개 배주가 형성됨을 확인하였다. Aiming to establish an efficient conventional breeding system in tea (Camellia sinensis), fruit set and seed formation with seasonal variation were evaluated at some cross combinations. The pollen germination test was conducted on a medium consisting of 10% sucrose, 2% agar, pH 5.6 and the result indicated that pollens used in artificial pollination had normal germination activity. Pollen tubes penetrated through style into ovary within 3 days after artificial pollination. Fruit set was ranged at 3.7~57.7% and average number of seeds per fruit was varied at 1.4~3.0. Amount of variation was little at average number of seeds per fruit, but much high at fruit set. Morphological analysis determined that one ovary had three carpels and 12 ovules, including 4 ovules a one carpel, respectively.
분광측색계를 이용하여 녹차 탕색을 측정하기 위한 녹차 시료의 최적조건
고광섭(Kwang-Sup Ko),이진호(Jin-Ho Lee),유주(Ju Yoo),이민석(Min-Seuk Lee),이정대(Jeong-Dae Lee),현해남(Hae-Nam Hyun),김영걸(Young-Gul Kim) 한국차학회 2011 한국차학회지 Vol.17 No.1
In order to evaluate the quality of green tea extract color, the ratio of green to yellow (a/b ratio) in the extracted green tea was utilized. Using a color difference meter, the a/b ratio proportionally increased as the sample amount increased, which means that the sample amount did not influence the a/b ratio. Accordingly, based on an amount of 3 g, which was used in the sensory method, stabilization of the tea extract color varied until 20 minutes had passed. In addition, when the stem was removed, the a/b value was highest. Under these conditions, after the sample was measured 10 times, coefficient variance was below 3%, which means good recovery. This method had an accuracy ofR²=0.6894, compared to that of the sensory method. Therefore, this instrumental method is strongly suggested as one of the ways of objectively measuring tea extract color.