A Basic Study on Leaf and Stem Production of Angelica acutiloba

Choi,Seong-Kyu,Yun,Kyeong-won,Chon,Sang-Uk,Lee,Jong-Ill,Seo,Young-Nam,Seo,Kyoung-Sun,Choi,Kyeong-Ju 한국자원식물학회 2004 Plant Resources Vol.7 No.3

This study was conducted to develop effective production system in greenhouse for leaves and stems of Angelica acutiloba by using connect pots in 2003 and 2004. Seed germination rate and plant biomass of Angelica acutiloba collected in 2004 were higher than those harvested in 2003. Germination rate of Angelica acutiloba seeds collected in 2003 was 10%, while germination rate of seeds collected in 2004 was above 90%. Especially, plant growth and yield of Angelica acutiloba grown in connect pots sized with 4×4×5cm(length×width×height) were the highest. These results indicate that leaf and stem production of Angelica acutiloba can be improved by using connect pots and optimizing seed collecting time in greenhouse.

8년간(1992~1999) 산업안전보건연구원에 의뢰된 직업병 심의 사례 분석

강성규,김규상,김양호,최정근,안연순,진영우,최병순,양정선,김은아,채창호,최용휴,김대성,박정선,정호근 대한산업의학회 2000 대한직업환경의학회지 Vol.12 No.2

Objectives : Pneumoconisis and noise-induced hearing loss (NIHL) have been reported as main occupational diseases by the Special Health Examination. The Industrial Accident Compensation Insurance has reported various work-related diseases, however, these two diseases occupied almost a half of compensated cases. Therefore, it was not well known about the status of occupational diseases other than pneumoconiosis, NIHL, and cardio-cerebrovascular accident (CVA). This study was conducted to analyze claimed cases as an occupational disease, that was requested to the Korea Industrial Safety and Health Agency (KOSHA). Methods : The local office of the Korea Labor Welfare Corporation (KLWC) has asked the KOSHA for confirmation of claimed cases as an occupational disease. We analyzed 379 cases requested from KLWC, the Ministry of Labor, employers, unions and occupational health agencies from 1992 to 1999. Results : Male was 80.7 % of the requested cases. Their mean age was 42 years old and 75.5 % of them were more than 35 years old. The requested cases were increased rapidly from 25 cases in 1992 to 108 cases in 1999 and the accept rate was 50.7 %. The majority of requested cases were respiratory diseases(22.4%), cancers(18.5%), Neuropsychiatric problems(14.5%), and musculoskeletal problems(13.5%). The accept rate was high in reproductive, respiratory, musculoskeletal and digestive disorders and low in neuropsychiatric, renal and otologic problems and occupational cancers. 73.6% of them were caused by chemical agents, especially 28.5 % were by organic solvents. 67% of them were clinically confirmed at university hospitals. A half of the cases were from KyongIn area, even the request came from the whole country. Conclusions : A claim was common in workers whose age was over 35 years old and exposure history was over 10 years. The respiratory diseases and neuropsychiatric disorders were still main problems in occupational health and occupational cancers was increasing even though its accept rate was not high yet.

Cu(Ⅱ) 이온과 질소-황을 가진 포단드와의 착물 형성에 관한 연구

최규성,정징운 慶南大學校 附設 基礎科學硏究所 1996 硏究論文集 Vol.8 No.-

The stability constants, enthalpy, and entropy changes of complexation of Cu(Ⅱ) ion with sulfur-containing podand ligands such as tri(phenylthio-2-ethyl)amine(Podand Ⅰ), tetra(phenylthio-2-ethyl)ethylendiamine (Podand Ⅱ) have been determined by uv-vis spectrophotometer in 95% MeOH at various temperature. From the results, the followings have been obtained. Cu(Ⅱ) ion forms a 1:1 complex with these ligands, the order of stability constants and enthaply changes is Podand Ⅰ <Podand Ⅱ, entropy changes is Podand Ⅰ> Podand Ⅱ.

國立公園 內藏山地域 날개응애類의 分類學的 硏究

崔星植,金榮圭 圓光大學校 1987 論文集 Vol.21 No.2

國立公園 內藏山地域의 土壤中에 棲息하는 날개응애類를 調査하기 위해 1986년 3월부터 7월사이에 6個地點에서 土壤試料를 採取하여 Tullgren裝置에서 土壤動物을 抽出하였고 그 중에서 날개응애類만을 slide 標本으로 製作하여 檢境 分類하였다. 그 結果 44屬 49種이 檢出되었으며 그 중에 7種은 韓國末記錄種이다. 그들은 헛털조개응애(Metaphthiracarus bacillatus ??, 1980), 굵은털뿌리왕응애(Heminothrus targionii(??, 1885)) 일본고등응애 (Platyliodes japonicus ??, 1979), 사도만두응애 (Sadocepheus undulatus ??, 1965), 넓은지게달걀응애 (Liacarus gammatus ??, 1967), 옆구리헛털오징어응애 (Trichotocepheus erabuensis ??, 1965), 어깨뚜껑응애 (Truncopes moderatus ??, 1974)등이다. This paper has been performed to investigate the oribatid mite fauna inhabiting around National park Mt. Naejang from March to July, 1986. Soil materials were collected from six habitats, and then soil animals were extracted from them through Tullgren apparatus. Among them, only the oribatid mite fauna were made into slide sample, examined and classified from this performance, 44 genera and 49 species were reveald. Among them 7 species have not found in Korea records : they are Metaphthiracarus bacillatus, Aoki, 1980, Heminothrus targionii (Berlese, 1885), Platyliodes japonicus Aoki, 1979, Sadocepheus undulatus Aoki, 1965, Liacarus gammatus Aoki, 1967, Trichotocepheus erabuensis Aoki, 1965, and Truncopes moderalus Aoki et Ohkubo, 1974.

Nd: YAG 레이저 조사가 Clacium Fluoride 형성 및 치아 내산성에 미치는 영향

최병재,김성오,손흥규,이제호,박광균 大韓小兒齒科學會 1999 大韓小兒齒科學會誌 Vol.26 No.2

불소도포시 주로 형성되는 calcium fluoride는 구강내 환경에서 pH에 의해 조절되는 불소의 저장고 역할을 하여 치아우식 예방에 있어서 중요한 역할을 하는 것으로 알려져 있다. 따라서 불소도포의 우식예방 효과는 calcium fluoride를 얼마나 많이 형성시켜 오래 지속시키는 가에 달려있다. 이에 치아 내산성 증가에 효과 있다고 알려진 Nd:YAG 레이저 조사가 calcium fluoride형성 및 치아 내산성에 미치는 영향에 대해 알아보기 위해서 실험을 시행하였다. 소의 영구전치에서 276개의 시편을 제작하여 아무런 처치를 하지 않은 군을 대조군으로 하고 1.23% acidulated phosphate fluoride (APF) 5분, 30분 도포 및 Nd:YAG 레이저 조사에너지 밀도 20J/㎠,40J/㎠의 조건에 따라 불소 도포군, 레이저 조사군, 불소 도포후 레이저 조사군, 레이저 조사후 불소 도포군으로 분류하였다. 불소도포를 시행한 경우 이를 다시 KOH 처리 여부에 따라 나누어 23개의 실험조건을 만들었다. 각 실험조건에 12개의 시편을 배정하고 이중 10개의 시편은 불소 및 무기인 측정에, 나머지 2개의 시편은 표면 관찰에 사용하였다. KOH 비처지군에서 0.1N HCIO4로 enamel biopsy를 시행하여 탈회 법랑질의 불소농도 및 탈회깊이를 측정하였으며, KOH 처치군에서는 1 M KOH로 24시간 처리하여 calcium fluoride를 정량 후 enamel biopsy를 시행하였다. 실험결과 얻어진 자료 및 주사 전자현미경 관찰 소견을 비교하여 다음의 결과를 얻었다. 1. KOH 비처치군에서 탈회된 법랑질의 불소농도는 레이저조사 후 불소도포시 레이저 에너지 밀도 증가에 따라 증가되는 경향을 보였다. 2. KOH 비처치군에서 법랑질 탈회깊이는 불소를 5분 도포후 레이저 20J/㎠를 조사한 경우를 제외하고는 레이저와 불소를 병행하여 처치시 각각을 단독으로 치치시보다 탈회깊이가 작았다 (p<0.05). 3. Calcium fluoride의 양은 레이저의 조사에 의해 유의 있게 증가하지 않았다 (p>0.05). 4. Calcium fluoride 입자는 불소만 도포한 경우에 비해 레이저 조사후 불소도포시 입자크기가 증가되었으며, 불소도포후 레이저 조사시 입자크기의 증가와 함께 일부 융합된 양상을 보였다. 5. KOH 처치군에서 법랑질의 불소농도는 불소를 30분 도포후 레이저를 조사한 경우를 제외하고는 대조군의 불소농도와 유의한 차이가 없었다(p>0.05). 6.KOH 처치군에서 불소와 레이저를 병행한 경우, 불소만 도포한 경우보다 탈횐된 법랑질의 깊이가 작았다 (p<0.05). 7. KOH 비처치군에서 탈회된 법랑질의 불소농도와 탈회깊이의 상관관계 (Spearman correlation coefficient: -0.6281)는 KOH 처치군 (Spearman correlation coefficient: -0.3792)에 비해 높은 음의 상관 관계를 보였고, 동일한 조건으로 불소도포 및 레이저 조사를 시행한 경우에 있어서 KOH 처리 여부에 따른 탈회법랑질 깊이의 유의차가 있는 경우 calcium fluoride의 형성량이 많았다. 이상의 실험결과로 미루어 보아 레이저 조사가 calcium fluoride의 형성량에 영향을 미치지 않았으나 레이저 조사의 영향으로 calcium fluoride의 용해가 감소하는 것으로 판단된다. 또한 불소도포 및 레이저 조사의 병행은 각각을 단독으로 처치한 경우에 비하여 치아 내산성 증가면에서 유리하므로 임상에서 불소도포주기 연장과 같은 유용한 결과를 얻을 수 있을 것으로 생각된다. Calcium fluoride. created by topical fluoride application, is the reservoir for fluoride ion regulated by pH in the oral environment. Therefore, the amount and the maintenance of calcium fluoride have an important role in preventing dental caries. The aim of this study is to evaluate the effect of Nd:YAG laser irradiaiton on the generation of calcium fluoride and the acid resistance of tooth enamel. The bovine anterior permanent teeth were prepared (n=276), and divided into following groups: no treatment(control), fluoride application alone, laser irradiation alone, laser irradiation after fluoride application, and fluoride application after laser irradiation. And each group was subdivided based on the application time of 1.23% acidulated phosphate fluoride (APF) (5 min and 30 min) and the irradiation energy of Nd:YAG laser (20J/㎠ and 40J/㎠). In case of fluoride application, each group was divided according to KOH treatment. Twenty three treatment conditions were made for this experiment and twelve specimens were assigned to each treatment condition. In each treatment condidtion, ten specimens were used for chemical analysis and two specimens were observed under SEM. In groups without treating KOH, fluoride content and the depth of enamel dissolved were measured using enamel biopsy technique. In groups with treating KOH, the amount of calcium fluoride was measured by the treatment with 1 M KOH for 24 hours and enamel biopsy was performed after KOH treatment. The results were analyzed by the fluoride content and the depth of enamel dissolved by enamel biopsy, amount and thickness of calcium fluoride, and the surface structures of enamel. The results are as follows: 1. In groups without treating KOH, the fluoride content of removed enamel showed a positive relationship with the energy density of laser when the laser irradiated before fluoride application. 2. In groups without treating KOH, the depth of enamel dissolved decreased more with the combined laser and fluoride treatment than with laser or fluoride treatment, except for the case of 20J/㎠ laser irradiation after 5 minute fluoride application (p<0.05). 3. The amount of calcium fluoride did not increased by laser treatment with no statistical significance(p>0.05). 4. The particle size of calcium fluoride increased in case of fluoride treatment after laser irradiation, compared with fluoride application alone. In case of laser treatment after fluoride application, the particle size of calcium fluoride increased and some of the particles fused as well. 5. There were no significant differences in the fluoride content of dissolved enamel between groups without treating KOH and control group, except for the case of laser irradiation after treatment of APF for 30 minutes (p>0.05). 6. In groups with treating KOH, depth of removed enamel in the groups of combined treatment with laser and fluoride was shallower than that in fluoride application groups (p<0.05). 7. In groups without treating KOH, the relationship between fluoride content and the depth of enamel dissolved showed more negative (Spearman correlation coefficient: -0.6281)than in groups with treating KOH (Spearman correlation coefficient: -0.3792). The greater amount of calcium fluoride could be found in case where there was a significant differences of the depth of enamel dissolved between groups with and without treating KOH. From these results, it can be concluded that laser seems to be a little effects on the amount of calcium fluoride formation, but has some effect on the lowering the solubility of calicium fluoride. As the combined treatment of laser and fluoride application showed more effective acid-resistant property, more extended recall period for fluoride application can be achieved with this combined treatment in the clinic.

Effect of Storage Condition on Yield and Quality of Angelica acutiloba Radix

Choi,Seong-kyu,Yun,Kyeong-Won,Chon,Sang-Uk,Seo,Young-nam 한국자원식물학회 2002 Plant Resources Vol.5 No.1

To develop an optimal storage method of root of Angelica acutiloba Radix, which has been grown as major herbal medicine material to be cultivated, root of Angelica acutiloba Radix, was stored for 10 months with different packing materials and sealing methods. The loss in dry weight as influenced by packing materials and sealing methods was the lowest at vacuum packing and followed by complete sealing methods with transparent polyethylene film. The ratio of root rot during the storage period was not significantly different between packing materials but was significantly different between sealing conditions. In conclusion, vacuum packing and complete sealing with polyethylene film appears to be most optimal for storage of Angelica acutiloba Radix.

Effect of Activated Charcoal on Growth of Zingiber mioga ROSC

Choi,Seong-Kyu,Yun,Kyeong-Won,Chon,Sang-Uk,Seo,Young-Nam,Seo,Kyoung-Sun,Kwon,Byung-Sun 한국자원식물학회 2004 Plant Resources Vol.7 No.2

Activate charcoal (AC) can be utilized as a soil conditioner in agricultural crop areas. This study was conducted to investigate the effect of AC on growth and yield of Zingiber mioga ROSC as affected by different amounts of AC. The results obtained are summarized as follows. Growth characteristics including plant height and leaf length were the highest when activated charcoal added with 10-30%, suggesting that optimum amount of activated charcoal was ranged from 10 to 30%. Growth and enlargement of the root were improved by 10% AC with higher rhizome length and weight.

Effect of Activated Charcoal on Growth of Curcuma longa Linne

Choi,Seong-Kyu,Yum,Kyeong-Won,Chon,Sang-Uk 한국자원식물학회 2003 Plant Resources Vol.6 No.3

This study was conducted to investigate the effect of Activated charcoal (AC) for stimulating growth and productivity of Curcuma longa Linne as affected by different concentrations of AC. Growth characteristics such as plant height and leaf length were the highest with the optimum amount of activated charcoal ranged from 10 to 30%. Root growth was elongated by the addition of 30% AC with the highest rhizome length and weight.

弓裔政權의 性格과 國號의 變更

崔圭成 상명대학교 논문집 1987 상명대학교논문집 Vol.19 No.-

The early power base of the Kungye regime was not on the traditional aristrcrats of Silla who were still imbued with the bone-rank (kolp'um) system, but on the local groups who wee anti-Silla. The regime began to be powerful with the occupation of Myongju-song and became strong enough founding a new state by a successful conquest of the nothern territory of Silla. Its position was further strengthened by the voluntary surrender of Wang Kon who was influential in the valley of Yesong River. Kungye was able to ally himself with the groups in the P'aeso area who were the people of Koguryo, and it was this alliance that made him found the state of Koryo as the successor to the former Koguryo kingdom. In the meantime, Kungye accepted the recommendation by Wang Yung and established his control over Songak which was the power base of Wang Kon. It was this control that he was able to make it his capital later. Kungye gradually became estranged from the people in P'aeso with the consolidation of his political power and the territorial expansion south to Jukryong, further beyond the old border of Koguryo. Subsequnetly, he renamed his state Majin and built a new capital. Majin means a "great country of the East" in Sanskrit. It is believed that Kungye was a monk and had some knowledge of Sanskrit. He must have hoped that the Sanskrit name would win public confidence in his kingdom and bring devine protection to it. At the same time, the new name seems to have expressed his intention to annex Silla and to build a great state which would be much bigger than Koguryo. His autonomous reign title of Mut'ae should be also understood to show his spirit of independence and self-confidence both internally and externally. The title was apparently disadvantageous in his relation with China. But be seems not to have minded of the diplomatic disadvantage. Kungye once more gave his state a new name. T'aebong, in Ⅲ. In this new name, we see his strong will to achieve a national unification that would embrace the Later Three Kingdoms and all their people. thus Kungye's renaming of the state and his transfer of the capital seem to have been mainly due to the growth of his power, not due to his entertaining of a superstitious belief and geomantic theories.

Growth Characteristics of Dendropanax morbifera in Chonnam

Choi,Seong-Kyu,Yun,Kyeong-Won,Lee,Jong-Il 한국자원식물학회 2002 Plant Resources Vol.5 No.2

This study was carried out obtain basic information for growth characteristics by different age of Dendropanax morbifera in chonnam, such as Yosu, Sunchon, Haenam, Gangjin, Wando. The pH of soil in cultivation area was 5.2 to 5.6 and organic matter was very high up to 10.6% . P205 content of soil in cultivation area was 35.3 to 42.1 mg/L, C.E.S was 13.9 to 14.4 me/100g, and moisture rate was 19.2 to 21.1 % . The flowering of Dendropanax morbifera began from 6~7 years old tree. The flowering date was at 10th of July at Wando. The growth characteristics of 12 years old tree was 929.5cm in stem height, 134.1mm in stem diameter, and 15 years old tree was 1,117.9cm in stem height, 160.8mm in stem diameter. The number of leaf was 13.9 at five years old tree, and the petioles length was 12.6 at five years old tree. Xylem sap can be had at more than 10 years old tree with good growth more than 10 em stem diameter.