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Study on Leaf Production of Angelica acutiloba by Mulching with Polyethylene Film
Choi,Seong-Kyu,Yun,Kyeong-Won,Chon,Sang-Uk,Seo,Young-Nam,Seo,Kyoung-sun,Kwon,Byung-Sun 한국자원식물학회 2003 Plant Resources Vol.6 No.3
This study was conducted to produce effectively more leaves of Angelica acutiloba through year-round production system by using various mulching materials and polyethylene(PE) tunnel. Soil temperature by covering treatment was higher in PE mulching and PE tunnel than in rice straw mulching, especially showing the highest temperature in PE tunnel from April through May. Water content of soil was higher in PE mulching than in non-mulching. Leaf production of Angelica acutiloba through year-round production showed the highest in PE tunnel and root production in PE mulching. These results suggest that leaf production of Angelica acutiloba can be maximized through PE tunnel cultivation system.
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.
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.
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.
Sang Kyun Cho(趙湘均),Young Jin oh(吳永鎭),Sug Kee Suh(徐錫埼),Hak Sin Kim(金學信),Soo Dong Kim(金洙東),Young Sun Chang(張榮宣),Kyeong Gu Choi(崔京求) 한국육종학회 1995 한국육종학회지 Vol.27 No.2
Improvement of sprout soybeans could be accomplished by maintenance and collection of varieties which have characteristics of small seed, disease resistance and high yielding ability. This research was conducted to investigate morphological and ecological characters for 102 sprout soybean varieties collected in Chonnam and Chonbuk area, and donated by Sprout Soybean Association and Genetic Engineering Research Institute. The sprout soybean collections contained 85% purple flower color, 76% ring-type leaf, 68% brown trichome, 57% elliptical-type seed, 69% yellow seed color and 44% brown hilum color. Days to flowering ranged from 53 to 79 days and growth duration averaged 137 days, with the range of 119~149 days. Stem length ranged from 52㎝ to 165㎝ and 100-seed weight distributed into 4.9~13.3g. The grain yield revealed large range of 0.53~4.18MT/ha. Crude protein and lipid contents was ranged 35.8~48.7% (average 40.9%), and 19.1~’21.2% (average 20.1%), respectively. Correlation coefficients between grain yield and pod numbers was significantly positive, while that between 100-seed weight and pod numbers was significantly nagative. Crude protein contents was significantly associated with growth duration but negatively correlated with 100-seed weight and yield. Crude lipid contents was negatively correlated with growth duration but positively associated with 100-seed weight.
The change of oral volatile sulfur compounds(VSC) concentration after periodontal treatment
( Sung Hyun Kim ),( Gyung Joon Chae ),( Ui Won Jung ),( Chang Sung Kim ),( Seong Ho Choi ),( Kyoo Sung Cho ),( Jung Kyu Chai ),( Chong Kwan Kim ),( Eun Kyeong Pang ) 대한치주과학회 2006 대한치주과학회 학술대회자료집 Vol.2006 No.2
Choi Bo Hwa,Baek Hye Jin,Ha Ji Young,Ryu Kyeong Hwa,Moon Jin Il,Park Sung Eun,Bae Kyungsoo,Jeon Kyung Nyeo,Jung Eun Jung 대한영상의학회 2020 Korean Journal of Radiology Vol.21 No.9
Objective: To investigate the clinical feasibility of synthetic diffusion-weighted imaging (sDWI) at different b-values in patients with breast cancer by assessing the diagnostic image quality and the quantitative measurements compared with conventional diffusion-weighted imaging (cDWI). Materials and Methods: Fifty patients with breast cancer were assessed using cDWI at b-values of 800 and 1500 s/mm2 (cDWI800 and cDWI1500) and sDWI at b-values of 1000 and 1500 s/mm2 (sDWI1000 and sDWI1500). Qualitative analysis (normal glandular tissue suppression, overall image quality, and lesion conspicuity) was performed using a 4-point Likert-scale for all DWI sets and the cancer detection rate (CDR) was calculated. We also evaluated cancer-to-parenchyma contrast ratios for each DWI set in 45 patients with the lesion identified on any of the DWI sets. Statistical comparisons were performed using Friedman test, one-way analysis of variance, and Cochran’s Q test. Results: All parameters of qualitative analysis, cancer-to-parenchyma contrast ratios, and CDR increased with increasing b-values, regardless of the type of imaging (synthetic or conventional) (p < 0.001). Additionally, sDWI1500 provided better lesion conspicuity than cDWI1500 (3.52 ± 0.92 vs. 3.39 ± 0.90, p < 0.05). Although cDWI1500 showed better normal glandular tissue suppression and overall image quality than sDWI1500 (3.66 ± 0.78 and 3.73 ± 0.62 vs. 3.32 ± 0.90 and 3.35 ± 0.81, respectively; p < 0.05), there was no significant difference in their CDR (90.0%). Cancer-to-parenchyma contrast ratios were greater in sDWI1500 than in cDWI1500 (0.63 ± 0.17 vs. 0.55 ± 0.18, p < 0.001). Conclusion: sDWI1500 can be feasible for evaluating breast cancers in clinical practice. It provides higher tumor conspicuity, better cancer-to-parenchyma contrast ratio, and comparable CDR when compared with cDWI1500.