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Cho, Namki,Huh, Jungmoo,Yang, Heejung,Jeong, Eun Ju,Kim, Young Choong,Kim, Jinwoong,Sung, Sang Hyun Informa Healthcare 2012 Journal of enzyme inhibition and medicinal chemist Vol.27 No.1
<P>A methanolic extract of the roots of <I>Polygala tenuifolia</I> (Polygalaceae) significantly attenuated nitric oxide (NO) production in lipopolysaccharide (LPS)-stimulated BV2 microglia cells. Five xanthones, 1-hydroxy-7-methoxyxanthone (<B>1</B>), 3,6-dihydroxy-1,2,7-trimethoxyxanthone (<B>2</B>), 1,3,6-trihydroxy-2,7-dimethoxyxanthone (<B>3</B>), 1,7-dihydroxy-2,3-dimethoxyxanthone (<B>4</B>) and 1,7-dihydroxy-3-methoxyxanthone (<B>5</B>), and five phenylpropanoids, 4-hydroxy-3-methoxypropiophenone (<B>6</B>), methyl 4-hydroxy-3-methoxycinnamic acid (<B>7</B>), 3,4,5-trimethoxycinnamic acid (<B>8</B>), 4-methoxycinnamic acid (<B>9</B>) and β-<SMALL>D</SMALL>-(3-<I>O</I>-sinapoyl) fructofuranosyl-α-<SMALL>D</SMALL>-(6-<I>O</I>-sinapoyl)glucopyranoside (<B>10</B>), were isolated from CHCl<SUB>3</SUB> fraction using bioactivity-guided fractionation. Among these compounds, compounds <B>1</B>, <B>2</B>, <B>4</B>, <B>5</B> and <B>7</B> showed significant inhibitory effects on LPS-induced NO production in BV2 microglia cells at the concentration ranging from 10.0 to 100.0 μM.</P>
Cho, Namki,Yang, Heejung,Lee, Mina,Huh, Jungmoo,Kim, Hyeon-Woo,Kim, Hong-Pyo,Sung, Sang-Hyun American Chemical Society and American Society of 2013 Journal of natural products Vol.76 No.12
<P>Bioassay-guided fractionation of the EtOAc extract from <I>Disporum viridescens</I> roots led to the isolation of five new benzyl benzoate glycosides, BBGs (<B>1</B>–<B>5</B>). The neuroprotective activities of the BBGs were screened using neuronal HT22 hippocampal cells. BBG-D (<B>4</B>) significantly protected murine hippocampal HT22 cells against glutamate-induced neurotoxicity by maintaining the antioxidative defense systems such as superoxide dismutase, glutathione reductase, glutathione peroxidase, and the glutathione content. BBG-D, in a dose-and time-dependent manner, increased HO-1 expression through the selective activation of pERK signaling among the MAPK pathways. These results suggest that BBG-D could be a promising candidate for the treatment of neurodegenerative diseases related to glutamate-induced oxidative neuronal cytotoxicity.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/jnprdf/2013/jnprdf.2013.76.issue-12/np400676b/production/images/medium/np-2013-00676b_0008.gif'></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/np400676b'>ACS Electronic Supporting Info</A></P>
曺南基 조선대학교 농업연구소 1987 農業硏究 Vol.1987 No.1
本 試驗은 受精卵의 徵細分離 및 培養에 대한 基礎資料를 얻고자 생쥐의 2, 4, 8 및 桑實胚와 소의 桑實胚를 供試하여 0.5%의 Pronase 處理 및 徵細操作器를 利用한 受精卵 分離 및 分離卵 培養試驗을 한 結果는 다음과 같다. 1. 多排卵 誘起를 위하여 생쥐는 PMS와 HCG를 各各 5 IU, 소에서는 PMS 2,500 IU와 PGF₂α×25㎎을 처리하여 頭當 各各 19.7±6.3個 및 7.5±3.1個의 正常受精卵을 回收하였다. 2. 供試된 總 個의 생쥐 受精卵 中 2細胞期에서 完全分離率은 75.0%였고, 平均은 70.5%였으며 소의 桑實胚는 66.7%가 完全分離되었다. 3. 分離된 생쥐 受精卵을 培養하여 正常發達을 나타낸 것은 2, 4, 8 및 桑實胚에서 各各 69.1%, 71.4%, 57.9% 및 69.2%였고 소의 桑實胚는 66.7%로 全體 平均은 67.9%였다. This study was carried out to obtain the basic information Oil splitting and culture of mouse and bovine embryos. Two-, fourh-, eight- cell and morula mouse embryos were digested by pronase, splitted in vitro by micro-glass needle with hand, and bovine embryo was splitted by micromanipulator. The splitted embryos were cultured under 5% of CO_2 gas in air at 37℃ for 48~72 hours. The results obtained in this study were summerized as follows; 1. The mouse and cattle were superovulated by 5IU of PMS and HCG, and 2,500IU of PMS and 25mg of PGF_2, respectively. The average embryos superovulated were 32.5±8.2 and 7.5±3.1, respectively. 2. Out of total 122 embryo splitted, the successful splitting rate was 75.0%, 66.7%, 68.4$ and 71.4% in 2-, 4-, 8- and morula embryos in mouse, respectively. There was no different splitting rate between mouse(71.4%) and bovine embryos (66.7%) in morula. 3. The successful culture rate of splitted embryos was 6P.0% and 67.9% in mouse and bovine embryos, respectively.
曺南基 조선대학교 농업연구소 1978 農業硏究 Vol.1978 No.1
本試驗은 병아리 育成에 있어서 綠銅料生汁 給與求準을 달리 할때 增體量, 飾料攝取, 飼料率效, 生存率, 經濟性에 미치는 影響을 檢討하기 위하여 實施한 試驗課題를 要約하면 다음과 같다. 1. 增體量은 1% 以上의 有意差차 나타나서 LSD 檢定結果 綠飼料生汁을 無添加區가 添加區보다 좋았으며 添加率이 높을 수록 增體量은 낮아 졌다. 2. 飼料攝取量은 C區가 T_1.2.3.4區 보다 266g, 51g, 88.16g, 88.92g 많았는데 比해 試驗區가 對照區 보아 적게 攝取하였다. 3. 館料效率은 C區가 2.80, T_1區 2.94, T_2區는 2.84, T_3區가 2.91, T_4區가 2.89로서 C區가 제일 좋았다. 4. 生存率은 C區가 95.8%, T_1區는 91.7%, T_2區가 85.5%, T_3區는 83.3%, T_4區가83.3%로서 差가 있으나 各區別로 統計的 有意差는 없었다. 5. 經濟性은 飼料面을 考察할때 緣飼料生汁 添加區가 좋았으나 全體的인 面에서는 有利하다 할 수는 없겠다. This experiment was inspected to investigate the effects of levels of Green feed juice on chick growth, body weight gained, feed consumption, feed requirement, viability, and economic value. The results obtained are summarized as follows. 1. The result of L. S. D. test was that supplemented lot to chicks was more effective than that of non-addition lot, showing over 1% of significant difference in weight. Also the more the rate was, the less the weight was. 2. In feed consumption, c lot was higher than that of T_l T_2 T_3 T_4 by 26.6g, 51g, 88.16g and 88.92g. On the other hand, control lot was less consumed than the counter part lot. 3. The feed requirement was 2.80 in clot, 2.94 in T_l 2.84 in T_2, 2.91 in T_3 and 2.89 in T_4, being the highest in c lot of all lots. 4. Viability was 95.8% in clot, 91.7% in T_l, 85.5% inT_2 83.3% in T_3 and 83.3% in T_4. So statistical differences were not found in all lots. 5. Economic value in feed was effective in test lots supplemented by Green feed juice, but it was not always effective in all cases.
Yu, Yun Seop,Cho, Namki,Oh, Jung Hyun,Hwang, Sung Woo,Ahn, Doyeol American Scientific Publishers 2010 Journal of Nanoscience and Nanotechnology Vol.10 No.5
<P>An analytical and continuous dc model for cylindrical doped surrounding-gate MOSFETs (SGMOSFETs) in the fully-depleted regime is presented. Starting from Poisson's equation, an implicit charge equation is derived approximately by a superposition principle with the exact channel potential and the charge equations in the depletion approximation. Also, a new explicit charge equation is derived from the implicit charge equation. The current equations without any charge-sheet approximation are based on the implicit and explicit charge control models, and both of them are valid for all the operation regions (linear, saturation, and subthreshold) and traces the transition between them without any fitting parameters. In the case of the SGMOSFETs with the fully-depleted condition, both of results simulated from the SGMOSFET models reproduce various 3D simulation results within 5% errors.</P>
신민혜(Minhye Shin),조남기(Namki Cho) 한국복합리조트포럼 2022 관광체육연구 Vol.1 No.1
Purpose: The purpose of this study was to understand changes before, during and after Yoga instructor’s teaching and performing Yoga and his/her contemplation. Method: Qualitative approach was implemented. In-depth interview, non-participation observation and document review were performed with six participants. interview transcription, description of observation, document comparison were adopted for analyses of data. Triangulation with interview, observation and document review was applied to increase the level of trustworthiness in data collection and analyses. Results: Contemplation before, during and after Yoga was observed. The participants perceive the need for contemplation. They expect that their students experience perception of self-beauty, enhanced health, sense of achievement, self-confidence, stress easiness and positive attitude. Conclusion: Consequently, Yoga instructors need to keep doing contemplation for their well-being as well as their students’ well-being.
Ji-Eun Lee,Namki Hong,Jin Kyong Kim,Cho Rok Lee,Sang-Wook Kang,Jong Ju Jeong,Kee-Hyun Nam,Woong Youn Chung,Yumie Rhee 대한외과학회 2022 Annals of Surgical Treatment and Research(ASRT) Vol.103 No.1
Purpose: The surgical success rate for primary hyperparathyroidism (PHPT) is currently 95%–98%. However, 3%–24% of patients show persistently elevated (Pe) parathyroid hormone (PTH) levels after parathyroidectomy (PTX). This single- center retrospective study aimed to compare the outcomes of patients with normal PTH and PePTH levels after successful PTX and to identify the factors associated with PePTH. Methods: The normal group, defined as patients with normal serum calcium and PTH levels immediately after PTX, was compared with the PePTH group (patients with normal or low serum calcium and increased serum PTH levels up to 6 months postoperatively) to determine the causes of disease in the PePTH group. Results: There were no significant differences in age, sex, or preoperative estimated glomerular filtration rate between the normal PTH group (333 of 364, 91.5%) and the PePTH group (31 of 364, 8.5%). However, there were significant differences in preoperative 25-hydroxyvitamin D (17.9 and 11.8 ng/mL, respectively; P = 0.003) and PTH levels (125.5 and 212.4 pg/mL, respectively; P < 0.001) between the 2 groups. Among the 31 cases of the PePTH group, 18 were attributed to vitamin D deficiency. Conclusion: Preoperative vitamin D deficiency is a predictive factor for PePTH. Therefore, preoperative administration of vitamin D supplements may reduce the probability of postoperative disease persistence. Patients with temporary laboratory abnormalities within 6 months after successful PTX should be monitored, and appropriate vitamin D and calcium supplementation may reduce the effort and cost of various examinations or reoperations.