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VaSpoU1 (SpoU gene) may be involved in organelle rRNA/tRNA modification in Viscum album

  • Ahn, Joon-Woo;Kim, Suk-Weon;Liu, Jang-Ryol;Jeong, Won-Joong
    • Plant Biotechnology Reports
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    • v.5 no.3
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    • pp.289-295
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    • 2011
  • The SpoU family of proteins catalyzes the methylation of transfer RNAs (tRNAs) and ribosomal RNAs (rRNAs). We characterized a putative tRNA/rRNA methyltransferase, VaSpoU1 of the SpoU family, from Viscum album (mistletoe). VaSpoU1 and other plant SpoU1s exhibit motifs of the SpoU methylase domain that are conserved with bacterial and yeast SpoU methyltransferases. VaSpoU1 transcripts were detected in the leaves and stems of V. album. VaSpoU1-GFP fusion proteins localized to both chloroplasts and mitochondria in Arabidopsis protoplasts. Sequence analysis similarly predicted that the plant SpoU1 proteins would localize to chloroplasts and mitochondria. Interestingly, mitochondrial localization of VaSpoU1 was inhibited by the deletion of a putative N-terminal presequence in Arabidopsis protoplasts. Therefore, VaSpoU1 may be involved in tRNA and/or rRNA methylation in both chloroplasts and mitochondria.

The effects of Galgŭnhaegit'ang and Won's-Galgŭnhaegit'ang for Taeŭmin on the immune response (태음인(太陰人) 갈근해기탕(葛根解肌湯)과 원특상(元特上)의 갈근해기탕(葛根解肌湯)이 면역반응(免疫反應)에 미치는 영향(影響))

  • Park, Seong-Sik;Ko, Byung-Hee;Song, Il-Byung
    • Journal of Sasang Constitutional Medicine
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    • v.9 no.1
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    • pp.315-337
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    • 1997
  • In order to compare the dffects of $Galg{\breve{u}}nhaegit'ang$(葛根解肌湯) of "Dongeuisusebowon(東醫壽世保元)and Won's(元)-$Galg{\breve{u}}nhaegit'ang$(葛根解肌湯) of "Dongeuisasansinpyun(東醫四象新編)" on the immune respone, Sprague-Dawley male rats were used and randomly divided into four groups. Normal group was under normal condition, Control group was injected i.v. with 2mg/kg Methotrexate(MTX) on the 9th day and 11th day after sensitization with SRBC on the 5th day, $Galg{\breve{u}}nhaegit'ang$ group was fed with 1ml of $Galg{\breve{u}}nhaegit'ang$ and Won's-$Galg{\breve{u}}nhaegit'ang$ group was fed with 1ml of Won's-$Galg{\breve{u}}nhaegit'ang$ by oral during eighteen days. In the 9th day and the 11th day after oral feeding with medication, MTX was injected in tail of rats in order to reduce immune function. Leukocyte count, lymphocyte ratio, lymphocyte count of spleen, lymphocyte count of bone marrow, contact hypersensitivity to DNFB, morphologic change of thymus cell, and electropherogram of serum protein were estimated and compared according to the group. The results are as follows : 1. Before and after MTX injection, leukocyte(WBC) count was increased signigicantly in Won's-$Galg{\breve{u}}nhaegit'ang$ group compared to control group. $Galg{\breve{u}}nhaegit'ang$ group had no significant difference compared to control group. 2. Before and after MTX injection, lymphocyte ratio was not significantly different in Won's-$Galg{\breve{u}}nhaegit'ang$ group and in $Galg{\breve{u}}nhaegit'ang$ group compared to control group. 3. The lymphocyte count of spleen was increased significantly in $Galg{\breve{u}}nhaegit'ang$ group compared to control group and Won's-$Galg{\breve{u}}nhaegit'ang$ group. Won's-$Galg{\breve{u}}nhaegit'ang$ group had no significant difference compared to control group. 4. The lymphocyte count of bone marrow was increased significantly in Won's-$Galg{\breve{u}}nhaegit'ang$ group compared to control group and $Galg{\breve{u}}nhaegit'ang$ group. $Galg{\breve{u}}nhaegit'ang$ group had no significant difference compared to control group. 5. Contact hypersensitivity was increased significantly in Won's-$Galg{\breve{u}}nhaegit'ang$ group compared to other group. $Galg{\breve{u}}nhaegit'ang$ group had no significant difference compared to control groups. 6. In the morphologic change of thymus cell, control group compared to normal group had a indistinct boundary between cortex and medulla and lymphocyte cell density of thymus was low. $Galg{\breve{u}}nhaegit'ang$ group and Won's-$Galg{\breve{u}}nhaegit'ang$ group compared to control group had a definite boundary between cortex and medulla and lymphocyte cell density of thymus was high. 7. In the SDS-PAGE electropherogram of serum protein, Won's-$Galg{\breve{u}}nhaegit'ang$ group had a wide band of nearby 25,000 Dalton, and which meant IgG generated more actively. Considering this results, $Galg{\breve{u}}nhaegit'ang$ group and Won's-$Galg{\breve{u}}nhaegit'ang$ group have an effect on the depression of immune function induced by MTX, and especially Won's-$Galg{\breve{u}}nhaegit'ang$ group has an significant effect than $Galg{\breve{u}}nhaegit'ang$ group.

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Korean Women's Shopping Behavior and Body Image in U.S.

  • Lee, Seung-Hee
    • Journal of Fashion Business
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    • v.9 no.3
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    • pp.125-133
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    • 2005
  • The purpose at this study was to examine and understand shopping behaviors and body image among Korean females in U.S. Subjects for this research were 20 Korean housewives. They were interviewed for this study using an interview schedule. As a result, most at the subjects have enjoyed shopping in U.S. stores. They showed that they go shopping more often in U.S. than in Korea due to more time to shop. They considered refund policy and kind salespersons as th positive characteristics in U.S. stores, while they complained about size, quality, and style in even their favorite stores. Also, subjects tend to be dissatisfied with their bodies. Compared to how they feel in Korea, they especially feel lower body image and lower self-esteem in the U.S. Ninety percent of subjects considered their body affected their shopping behaviors. To compensate how they felt about their bodies, they responded that they limit or change clothing styles or colors when they shopped. Based on these results, socio-cultural body image regarding ideal beauty and shopping behavior would be discussed.

The Maritime Strategy of Continental Powered Country and Maritime Powered Country based on Attack and Defense theory (공격과 방어의 관점에서 본 해양국가와 대륙국가의 해양전략 - 냉전 기 미·소간 해양전략 및 탈냉전 기 미·중간 해양전략 비교 -)

  • Jung, Gwang-Ho
    • Strategy21
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    • s.32
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    • pp.160-191
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    • 2013
  • This article is focused how the maritime strategy between continental powered country(the Soviet, the China) and maritime powered country(the U.S.) interact with attack and defense theory. We will know, what is the maritime strategy that the U.S. of military superiority has pursued with the point of view of attack, on the other hand, relatively what is the maritime strategy that the Soviet-Sino of military inferiority has pursued with the point of view of defense. In cold war, the Soviet has counteracted to 'blue belt defense' in active defense as to the U.S. 'sea strike' and in post cold war, the China counteract to 'A2/AD' as to the U.S. 'Air-Sea Battle'. The difference between the Soviet-Sino maritime strategy is that the China has emerged the second an economic power and their leadership has a strong's will to strengthen their navy's power. although the U.S. declare the pivot to Asia, the influence on Asia of the U.S. tend to decrease because of sequest. therefore, the China will seek to the more active defense beyond the first island chain. Meanwhile, the U.S. has reinforced of 'hub and spoke strategy' to solidify the U.S. formal allies to band together regional powers and to overcome the A2/AD challenge, the U.S. has been developed that the Air-Sea Battle concept meshes with Washington's 'rebalancing' policy toward the Asia-Pacific as its vital missions to safeguard core island or semi-island allies-namely, Korea and Japan-and crucial sea lanes of communication in the region are conducted mostly from or over the sea.

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China and U.S. in Africa: A Case of Exaggerated Rivalry

  • Waweru, Sammy Mwangi
    • Korea and Global Affairs
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    • v.3 no.1
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    • pp.151-182
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    • 2019
  • Rise of China has correspondingly seen increased Chinese involvement at global stage and regional levels in different parts of the world. This has attracted claims of strategic competition and rivalry between China and U.S., as China is said to be working towards replacing hitherto U.S. influence. Consequently there have been calls for U.S. to counter increased Chinese involvement to safeguard U.S. influences and interests. This study aims to contribute to this debate by examining the extent to which increased Chinese involvement in Africa has, if any, supplanted U.S. strategic interests in the continent. The study contends that, Chinese involvement in Africa has entailed China creating own niche that does not necessary threaten U.S. interests in the continent as widely portrayed and imagined. This is premised on the fact that, U.S. has historically had relatively minimal strategic interests in Africa as compared to other more strategic parts of the world that China could significantly threaten. Seen in this way, increased Chinese penetration in Africa has not had immediate threats to U.S. core strategic interests, thus explaining U.S. measured response to counter Chinese presence in Africa.

A Comparative Study of College Courses for Home Economics Education between Korea and U.S.A. (한국과 미국 대학의 가정교육과 교과목 비교 연구)

  • 임일영;윤인경
    • Journal of Korean Home Economics Education Association
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    • v.10 no.1
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    • pp.107-122
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    • 1998
  • The purpose of this study was to compare and analyze subject matters opened on Dept of Home Economics Education in Korea and U.S.A. For this study, 17 undergraduate catalog and college course guidelines of Korea and the 15 undergraduate catalog and course guidelines of U.S.A. were collected. Collected materials were compared and analyzed. For this comparision and analysis, classified the subject matters as three steps based on these data. Collected data were analyzed by arithmetic mean, percentage, frequency. The conclusions are as followings ; 1. The number of the Home Economics Education relative subject matters opened in Korea is 10% below, and U.S.A.'s is 20~30%. The ratio of U.S.A. is higher than that of Korea. 2. The domain of clothes & textiles and foods and nutrition is 50% in Korea, So, There is unbalance in Korea. 3. U.S.A. oftened various names of subject matters by characteristics more than in Korea.

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China's Perception on U.S. and Foreign Policy Strategy after the Global Financial Crisis (중국의 대미인식과 대외전략 논의: 2008년 글로벌 금융위기 이후)

  • Kang, Taek-Goo;Han, SukHee
    • Journal of International Area Studies (JIAS)
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    • v.15 no.2
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    • pp.51-68
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    • 2011
  • The purpose of this paper is to review China's perception on the U.S. power after the global financial crisis. Although economic power of U.S. was declined by the global financial crisis, U.S. hegemony in the international order still maintains. Gap of national power between U.S. and China may be narrow because of decline of U.S. economic power. It can be predicted China will push a policy that secures an initiative of reform in the global monetary system and is going to take a more cooperative policy without U.S. hegemony power harming China's core interests.

An Exploratory Study on Strategic Alliances between Korean Small and Middle Fashion Companies and Korean-American Fashion Companies - Focused on Analysis of Marketing Strategies of Korean-American Fashion Companies in LA - (중소 의류 업체와 재미 한인 의류 업체의 전략적 제휴에 관한 탐색적 연구 - LA 한인 의류 업체의 마케팅 전략 분석을 중심으로 -)

  • Shin, Su-Yun;Kim, Min-Jung
    • The Research Journal of the Costume Culture
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    • v.16 no.4
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    • pp.646-660
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    • 2008
  • Korean export of fashion products to the U.S. has fallen off sharply after 2001. Now, Korean fashion companies have to develop higher value-added business. In the U.S., Korean-American fashion companies are taking a primary role in up-stream of the fashion industry. To cut the edge over the U.S. fashion companies, one of the solutions could be to build the business relationship with Korean fashion companies which reflect the recent trend rapidly and have high quality production. On this study, we investigated the marketing strategies of Korean-American fashion companies to seek to start business with Korean fashion companies and make suggestions for Korean fashion companies who want to enter into the U.S. market effectively. To analyze current situation of Korean export to the U.S. and the U.S. fashion industry, we considered various kinds of statistic data, publications and studies. And we performed in-depth interviews with 9 Korean-American fashion companies in LA from $9^{th}$ to $21^{st}$ of July. The results are as follows. first, Korean fashion companies should aim for high-end market with the products of high quality and design. Second, there should be professional agents who manage Korean small-medium fashion companies and connect them with Korean-American fashion companies. Third, Korean fashion companies who want to enter into the retail market of the U.S. have to decide the target market clearly and plan strategic and differentiated merchandising. Fourth, Korean fashion companies can specialize in product developing service like proposing a product or a merchandising line as a package including designs, fabric swatches, trims, production information, etc.

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ON A GENERALIZED DIFFERENCE SEQUENCE SPACES DEFINED BY A MODULUS FUNCTION AND STATISTICAL CONVERGENCE

  • Bataineh Ahmad H.A.
    • Communications of the Korean Mathematical Society
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    • v.21 no.2
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    • pp.261-272
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    • 2006
  • In this paper, we define the sequence spaces: $[V,{\lambda},f,p]_0({\Delta}^r,E,u),\;[V,{\lambda},f,p]_1({\Delta}^r,E,u),\;[V,{\lambda},f,p]_{\infty}({\Delta}^r,E,u),\;S_{\lambda}({\Delta}^r,E,u),\;and\;S_{{\lambda}0}({\Delta}^r,E,u)$, where E is any Banach space, and u = ($u_k$) be any sequence such that $u_k\;{\neq}\;0$ for any k , examine them and give various properties and inclusion relations on these spaces. We also show that the space $S_{\lambda}({\Delta}^r, E, u)$ may be represented as a $[V,{\lambda}, f, p]_1({\Delta}^r, E, u)$ space. These are generalizations of those defined and studied by M. Et., Y. Altin and H. Altinok [7].

A Comparison of Environment Clauses under Korea-China FTA and Korea-U.S. FTA (한·중 FTA 및 한·미 FTA의 환경조항 비교)

  • PAK, Myong-Sop;KIM, Sang-Man;WOO, Jung-Wouk
    • THE INTERNATIONAL COMMERCE & LAW REVIEW
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    • v.69
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    • pp.567-588
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    • 2016
  • Korea-China FTA and Korea-U.S. FTA are the most significant FTA in volume and economic effect for Korea's perspective. Developed countries have dealt with environmental issues one of the main issues in FTA negotiation, while developing countries have been reluctant to it. Both Korea-China FTA and Korea-U.S. FTA have separate environment chapter respectively. A separate environment chapter was firstly introduced in Korea-U.S. for Korea's perspective. Both environment chapters provide high level of environment protection, recognition of multilateral environmental agreements, enforcement of environmental laws, and environmental cooperation. Both environment chapters require that each party make effort to improve environmental laws and measures. Korea-China FTA provides establishment a "Committee on Environment and Trade", and Korea-U.S. FTA provides establishment a "Environment Council" to oversee the implementation of environment clauses. Korea-China FTA and Korea-U.S. FTA have very similar provisions on environment and trade, and are expected to contribute to enhancing environment protection. However, a lot of provisions are somewhat declaratory rather than mandatory. Therefore, further environmental cooperation is encouraged to achieve the goals and objectives of the environment clauses and FTA.

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