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Moire 方法에 依한 粘性土의 Poisson 比 決定
李茂洛,申允勳 慶北工業專門大學 1981 論文集 Vol.18 No.-
An experimental study to determine the Poisson's Ratio of clayey soil was attempted by means of Moire technique. Gratings of 168l? were printed on the cirular face of Specimen. The technique is considered to provide a new means of obtaining the Poisson Ratio of clay or clayey soil. Moire method which allows the measurements of displacements and strains under splitting test is considered to be used in the experimental pursuit of Poisson's Ratio of clayey soil.
칼슘제 수관살포가 참다래의 과실 품질과 저장에 미치는 영향
임경호,나양기,임동근,마경철,조윤섭,김월수,이상현,박용서 全南大學校 農業科學技術硏究所 2001 農業科學技術硏究 Vol.36 No.-
This study were carried out to improve Kiwifruit quality and storage life. Three kinds of calcium compound were sprayed and calcium content of fruits, weight loss during fruit storage and fruit quality were investigated. Calcium contents within leaves and fruit were lower in Clef-non treatment than that of control. The calcium content in fruit pericarp of Kalk-H and CaCl2 was 0.04 to 0.05% higher than that of control. Fruit weight and soluble solids content at harvest was a little higher but acidity and fruit hardness was lowered. Fruit weight loss of Kalk-H and CaCl2 treatment was 1.39 to 1.53% lower than that of control during storage. The soluble solids of ripen fruit was 1.0 to 1.3% higher in all treatment and 0.8% higher in Kalk-H treatment in 120 of after storage. Fruit hardness of control fruit was higher at harvest but that of CaCl2 treatmented fruit was 0.39㎏/φ 5㎜ higher in 120 days of storage.
Kim, Kwang-Youn,Lee, Seul-Gi,Baek, Su Youn,Lee, Eun Hye,Jang, Eun Jeong,Lee, Ju-Hee,Ahn, Soon-Cheol,Chang, Jae-Hoon,Oh, Tae Woo,Kim, Sang-Hun,Ma, Jin-Yeul,Kim, Sang Chan,Park, Kwang-Il,Kim, Young Woo Elsevier 2018 Toxicology and applied pharmacology Vol.360 No.-
<P><B>Abstract</B></P> <P>Salinomycin, a monocarboxylic ionophore in <I>Streptomyces albus</I>, has been studied as an anti-cancer agent. However, we wondered whether salinomycin has another effect such as an anti-oxidant and hepatic protectant, because some chemical drugs treating human diseases were sometimes related with their toxic effects. Therefore, this study was conducted to examine the effects of salinomycin against oxidative stress and mitochondrial impairment in vivo and in vitro as well as the cellular mechanisms of action. In hepatocyte, salinomycin inhibited arachidonic acid (AA) + iron-induced apoptosis, mitochondrial dysfunction and ROS production. As a molecular mechanism, salinomycin induced autophagy through AMP-activated protein kinase (AMPK) activation, as assessed by the accumulation of acidic vesicle organelles, p62 and LC3-II. Moreover, these protective effects were blocked by AMPK inhibition, which indicates the importance of AMPK in the process of salinomycin's effects. In mice, oral administration of salinomycin protected against carbon tetrachloride (CCl<SUB>4</SUB>)-induced oxidative stress and liver injury, and also activated AMPK as well as autophagy-related proteins in the liver. Collectively, salinomycin had the ability to protect hepatocytes against AA+iron-induced reactive oxygen species production and mitochondrial dysfunction, as well as CCl<SUB>4</SUB>-induced liver injury. Although this beneficial effect was demonstrated under severe oxidative stress, this study showed that salinomycin protected the liver against the oxidative stress and liver damage through AMPK and autophagy, and suggest that salinomycin has a possibility to treat a broad range of diseases.</P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
조명래,이종석,이사라,손연경,배창환,여주홍,이해석,마진경,이옥환,김종예,Cho, MyoungLae,Lee, Jong Seok,Lee, Sarah,Son, Youn Kyoung,Bae, Chang-Hwan,Yeo, Joohong,Lee, Hae-Sock,Ma, Jin-Gyeong,Lee, Ok-Hwan,Kim, Jong-Yae 한국식품영양학회 2015 韓國食品營養學會誌 Vol.28 No.6
This study aimed to investigate antioxidant activities from 11 forest plants, and determine their total phenolics, flavonoids and proantocyanidins contents. In addition, the antioxidant activities were correlated with antioxidant compounds. Among the samples, Cornus officinalis, Castanea crenata, Lindera erythrocarpa, Carpinus laxiflora and Pourthiaea villosa showed significantly higher 2,2-diphenyl-1-picrylhydrazyl (DPPH) ($IC_{50}=21.12{\sim}28.93{\mu}g/mL$) and 2,2'-azino-bis(3-ethylbenzothia zoline-6-sulfonic acid) (ABTS) ($IC_{50}=28.18{\sim}52.55{\mu}g/mL$) radical scavenging ability with reducing power ($IC_{50}=59.91{\sim}93.64{\mu}g/mL$) than other plants; and C. crenata, L. erythrocarpa and Rubus coreanus showed strong nitric oxide (NO) inhibition activity (${\geq}60%$). In addition, L. erythrocarpa, C. laxiflora and P. villosa showed higher oxygen radical absorbance capacity (ORAC) values (${\geq}1,100{\mu}M$ TE/g sample) than other samples. High total phenolic contents were observed in C. crenata (429.11 mg GAE/g), L. erythrocarpa (437.11 mg GAE/g), C. laxiflora (408.67 mg GAE/g) and P. villosa (404.11 mg GAE/g). The DPPH and ABTS radical scavenging activity with reducing power were significantly correlated with total phenolic contents ($R^2=0.71{\sim}0.79$), but total phenolic contents were not correlated with NO inhibition and ORAC ($R^2=0.35{\sim}0.43$). Therefore, these results suggested that C. officinalis, C. crenata, L. erythrocarpa, C. laxiflora and P. villosa are potential natural antioxidative candidate ingredients.
기관절개관을 보유하고 있는 가정간호대상자를 위한 기관절개관 자가관리 프로그램 개발 및 평가 : : Caregiver를 중심으로
마초원,이주연 병원간호사회 2011 임상간호연구 Vol.17 No.3
Purpose: The purpose of this research was to develop and train caregivers in tracheostomy tube care using a self-management program to assist patients with an 'at home'tracheostomy procedure. Caregivers'self-efficacy and knowledge of tracheostomy management before and after the training was also identified. Methods: Research participants were the main caregivers for patients with tracheostomies who were affiliated with a'Home Healthcare Center'. Training and observation were done at 'A Hospital'and 'G Hospital'both affiliated with 'K University'in Seoul. Data were collected from May 3, 2010 to January 25, 2011 and analyzed using Wilcoxon signed rank test with SPSS program version 12.0. Results: Significant differences were found for the pre and post evaluation of the 'self-management program'for the implementation of tracheostomy care. The development and implementation of the s'elf-management program'improved the main caregivers'knowledge of tracheostomy tube management (Z=-3.599, p<.001). Conclusion: Results show that this program has identified an effective nursing intervention for promoting the caregivers'knowledge of tracheostomy care and self-efficacy. We recommend that further research should be done to test primary caregivers' maintenance of knowledge and self-efficacy in tracheostomy tube management and identify factors affecting knowledge and self-efficacy in the care of these patients.
Lee, Hyeon Yong,Weon, Jin Bae,Jung, Youn Sik,Kim, Nam Young,Kim, Myong Ki,Ma, Choong Je Hindawi Publishing Corporation 2016 Evidence-based Complementary and Alternative Medic Vol.2016 No.-
<P><I>Aronia melanocarpa</I> (<I>A. melanocarpa</I>)<I> berries</I> are a fruit with a marked antioxidant effect. The objective of this study was to confirm the effect of<I> A. melanocarpa berries</I> extract against scopolamine-induced memory impairment in mice using the Morris water maze and passive avoidance test. Moreover, we determined a possible mechanism of the cognitive-enhancing effect involving AChE activity and BDNF and p-CREB expression in the hippocampus of mice.<I> A. melanocarpa berries</I> extract attenuated the learning and memory impairment induced by scopolamine in the Morris water maze (79.3 ± 0.8 s of 200 mg/kg and 64.4 ± 10.7 s of 400 mg/kg on day 4) and passive avoidance tests (46.0 ± 41.1 s of 200 mg/kg and 25.6 ± 18.7 s of 400 mg/kg).<I> A. melanocarpa berries</I> extract reduced the acetylcholinesterase level in the hippocampus of scopolamine-injected mice and increased BDNF and p-CREB expression in the hippocampus. The major compound, cyanidin-3-O-galactoside, also reversed memory impairment. These results showed that<I> A. melanocarpa berries</I> extract improved memory impairment by inhibiting AChE and increasing BDNF and p-CREB expression, and cyanidin-3-O-galactoside may be responsible for the effect of<I> A. melanocarpa berries</I> extract.</P>