• Title/Summary/Keyword: Comparative Culture Study

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Comparative Study of Protocorm-like body and Multiple Shoots from Dendrobium Candidum on Biological Activities (철피석곡의 원괴체상구체 및 다신초 추출물의 생리활성에 관한 비교 연구)

  • Park, Chang-Min;Kwon, Ju-Chan;Han, Na-Kyeong;Joung, Min-Seok;Paek, Kee-Yoeup;Choi, Jong-Wan
    • Journal of the Society of Cosmetic Scientists of Korea
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    • v.40 no.1
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    • pp.29-36
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    • 2014
  • Dendrobium candidum is one of the well-known orchid on traditional and rare medicinal herb in China. We artificially cultured protocorm-like body and multiple shoots using the bioreactor culture system from Dendrobium candidum and experimented an efficacy as a cosmetic ingredient for skin care. Several studies previously have reported anti-tumor, wound healing and immunological function of Dendrobium candidum but other efficacies were not well known. In the present study, we investigated the cosmetic efficacy to know applicable value of protocorm-like body and multiple shoots cultured from Dendrobium candidum as a cosmetic ingredient. The biological activities of extracts from protocorm-like body, multiple shoots, aerial part and underground part of Dendrobium candidum were investigated. Results were found that extracts of protocorm-like body are superior to other extracts (underground part, aerial part and multiple shoots extracts) on anti-oxidant effect. Also, protocorm-like body extract contained the phenolic and flavonoid compounds more than aerial part, underground part and multiple shoots extracts. In addition, we investigated skin whitening effect related to whitening of skin. In tyrosinase activity and melanin synthesis assay, multiple shoots extract is superior to other extracts (aerial part, underground part and protocorm-like body), on inhibitory effect of tyrosinase activity and melanin synthesis respectively. These results indicate that the protocorm-like body and multiple shoots extracts cultured from Dendrobium candidum presents a new possibility of being applicable to skin improvement as a cosmetic ingredient.

Understanding Security Knowledge and National Culture: A Comparative Investigation between Korea and the U.S

  • Kwak, Dong-Heon;Kizzier, Donna Mcalister;Zo, Hang-Jung;Jung, Eui-Sung
    • Asia pacific journal of information systems
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    • v.21 no.3
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    • pp.51-69
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    • 2011
  • Security has been considered one of the most critical issues for managing IT resources in many organizations. Despite a growing interest and extensive research on security at various levels, little research has focused on the comparison of security knowledge levels between different cultures. The current study investigates and compares the security knowledge level between Korea and the U.S. Based on the literature review of spyware, Hofstede's cultural dimensions, and security knowledge, this study identifies three constructs (i.e., security familiarity, spyware awareness, and spyware knowledge) to examine the difference of security knowledge levels between Korea and the U.S. Six hundred ninety-six respondents from Korea and the U.S. participated in the survey, and an in-depth analysis based on analysis of covariance (ANCOVA) was carried out. The results show that the levels of security familiarity, spyware awareness, and spyware knowledge are significantly lower in Korea than in the U.S., as expected. These findings present a significant association between national culture and security knowledge, and the degree of individualism (or collectivism) plays an especially critical role in the perception of security. A number of implications for academia and practitioners emerge. Limitations and future research directions are discussed in the conclusion.

A Study on Strategies Elements(4Cs) of Space Marketing Comparative Analysis for Housing Culture Center (주택문화관의 공간구성과 스페이스 마케팅 전략적 요소(4Cs)에 관한 비교 분석 연구)

  • Kim, Ji-Hye;Kong, Soon-Ku
    • Korean Institute of Interior Design Journal
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    • v.20 no.5
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    • pp.208-216
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    • 2011
  • Today, the market environment for companies around the world has been changed by globalization, digital innovation, information by opening the diversity, consumer awareness, and the development of mass media in the wide areas such as, politics, economy, society and culture. Accordingly, the function of the housing cultural center also has been changed from the Place where the trading had been made to the Space where the marketing could work. The housing cultural center is home to companies to target their corporate culture and corporate image, and the brand identity. From the space marketing standpoint, this study extracts differentiator of the housing cultural center from theoretical consideration to boom up of the housing cultural center and to build up its identification. Based on this analysis, the design identity element of the interior design of the housing cultural center is proposed by the actual and analytical cases. Such a future plan design identity elements in the design of the new housing cultural center is providing basic design guide line to recognize the importance.

Abusive Language in Chinese and English

  • Zeng, Jinwen;Odhiambo, Calvin;Marlow, David
    • Cross-Cultural Studies
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    • v.28
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    • pp.141-161
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    • 2012
  • Abusive language used by college students reflects current social attitudes and values. Adopting a comparative and cross-cultural perspective, this study examines the frequency and perceived severity of abusive language in English and Mandarin Chinese. Because abusive language often includes sexual connotations, this paper employs a particular concentration on sexism. Gender differences in the use of abusive language illustrate a male bias across cultures.

A Comparative Study on the Verb Way Construction: English and Dutch

  • Kim, Mija
    • Cross-Cultural Studies
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    • v.24
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    • pp.132-146
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    • 2011
  • This paper is intended to describe the idiosyncratic aspects of the verb way construction in English, clarifying the productivity property of this construction and to elucidate the claim that this construction displays the properties of language-general, not a language-particular by comparing the behaviors from Dutch. And this paper will argue against the lexical approach and explain the drastic mismatches in syntax and semantics responsible for the constructional properties as one type of directional motion constructions by proposing a constructional analysis in HPSG.

A Comparative Study on the Parthenogenetic Development of Pig Oocytes Cultured in North Carolina State University-23 and Porcine Zygote Medium-3

  • Lee, Joo-Hyeong;Hyun, Sang-Hwan;Lee, Eun-Song
    • Journal of Embryo Transfer
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    • v.27 no.2
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    • pp.121-126
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    • 2012
  • The objective of this study was to examine the effect of in vitro culture media on embryonic development of in vitro-matured (IVM) oocytes after parthenogenetic activation (PA) in pigs. Immature pig oocytes were matured in TCM-199 supplemented with porcine follicular fluid, cysteine, pyruvate, EGF, insulin, and hormones for the first 22 h and then further cultured in hormone-free medium for an additional 22~26 h. IVM oocytes were activated by electric pulses and cultured in porcine zygote medium-3 (PZM-3) and North Carolina State University-23 supplemented with essential and non-essential amino acids (NCSU-23aa). These media were further modified by supplementing 2.77 mM myo-inositol, 0.34 mM trisodium citrate, and $10{\mu}M$ ${\beta}$-mercaptoethanol (designated as mPZM-3 and mNCSU-23aa, respectively). Culture of PA embryos in mPZM-3 significantly increased development to the blastocyst stage than culture in NCSU-23aa (36.2% vs. 24.8%, p<0.05). Modified PZM-3 showed a significantly higher blastocyst formation than NCSU-23aa in both groups of embryos that were activated at 44 h and 48 h of IVM (51.0% vs. 35.5% and 49.0% vs. 34.2% in oocytes activated at 44 h and 48 h of IVM, respectively). Irrespective of the follicle diameter where oocytes were collected, embryonic development to the blastocyst stage was increased (p<0.05) by the culture in mPZM-3 compared to culture in NCSU-23aa (25.9% vs. 34.2% and 32.9% vs. 44.8% in embryos derived from small and medium size follicles, respectively). Our results demonstrated that culture media had significant effect on preimplantation development PA embryos and that mPZM-3 was superior to mNCSU-23 in supporting development to the blastocyst stage in pigs. This beneficial effect of mPZM-3 on embryonic development was not impaired by other factors such as time of oocyte activation and origin of immature oocytes (small and medium size follicles).

Health Habit, Perceived Health Status and Physical Health Status of Young Korean and Korean-Chinese Women: A Comparative Study

  • Lee, Young-Ran;Im, Eun-Ok;Yu, Sook-Ja
    • Research in Community and Public Health Nursing
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    • v.26 no.3
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    • pp.312-320
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    • 2015
  • Purpose: The purpose of this study was to compare health habit, physical health status, and perceived health status between young Korean and Korean-Chinese women. Methods: This study was conducted as a cross-sectional comparative survey. For this study, 114 Korean women were recruited in Seoul, South Korea and 64 Korean-Chinese women in Jilin Province, China through convenience sampling. Results: A positive correlation was found between health habit and perceived health status. Perceived health status, WHR, body density, flexibility, and muscle endurance were significantly lower in Korean women than in Korean-Chinese ones. Knee flexion and ankle dorsal flexion was significantly higher in Korean women than in Korean-Chinese ones. Conclusion: Further investigation is required to compare the two different groups that share the same ethnicity and similar culture but were born into different countries. A study such as this may provide answers regarding the influence of migrated transition on health.

The anti-imflammatory effect and the mechanism of Formica yessensis extraction (홍의 추출물의 항염작용 및 그 기전 연구)

  • Kim, Jong-Min;Kim, Seung-Hyung;Yang, Won-Kyung;Jung, Taek-Geun;Kim, Se-Ran;Hwang, Sung-Joon;Yoo, Hwa-Seung
    • Journal of Haehwa Medicine
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    • v.25 no.1
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    • pp.71-86
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    • 2016
  • Objective : Hongyi (Formica yessensis) is the dried insect of fomicidae. In previous studies, it appeared possibilities on anti-thrombosis, preventing atherosclerosis, treating rheumatoid disease, and inhibiting hela cell. In this study, we investigated anti-inflammatory effects and mechanism of Hongyi. Methods : Hongyi A was extracted by water and made dried powder. Hongyi B was extracted by ethanol and made dried powder. We measured Nitric Oxide (NO) production on the mouse macrophages (RAW 264.7), mouse vascular endothelial cell (MOVAS) and human vascular endothelial cell (HUVEC) for anti-inflammatory effect. In addition, we conducted reverse transcription reaction (RT-PCR) for investigating the mechanism. Results : In RAW 264.7 macrophages stimulated by LPS, Hongyi A ($100{\mu}g/m{\ell}$) decreased NO production compared with LPS $2{\mu}g/ml$ control group with statistical significance (p<0.05). Hongyi A (50, $100{\mu}g/m{\ell}$) also decreased NO production compared with LPS $4{\mu}g/ml$ control group with statistical significance (p<0.01). Hongyi B (50, $100{\mu}g/m{\ell}$) decreased NO production compared with LPS $2{\mu}g/ml$ control group with statistical significance (p<0.01). Hongyi B (10, 50, $100{\mu}g/m{\ell}$) also decreased NO production compared with LPS $4{\mu}g/ml$ control group with statistical significance (p<0.01, p<0.001, p<0.001). In the MOVAS, Hongyi A and B increased NO production compared with control group. In the HUVEC, Hongyi B increased NO production compared with control group. The expression of NF-${\kappa}B$ in 12-hours MOVAS culture was decreased by Hongyi A and B (10, $50{\mu}g/ml$) compared with control group, but expression of $I{\kappa}B$ was increased. In the 24-hours MOVAS culture, expression of $I{\kappa}B$ was significantly increased. The expression of NF-${\kappa}B$ in 12-hours HUVEC culture was decreased by Hongyi A and B compared with control group, but expression of $I{\kappa}B$ was increased. Hongyi B also increased eNOS mRNA gene expression. Conclusions : Hongyi A and B showed anti-inflammatory effect in mouse macrophages with the activation of vascular endothelial cell through NO production in MOVAS and HUVEC repectively. Honyi B showed superior effect than Hongyi A, but additonal mechanism study should be conducted.

A Comparative Study on Korean Connective Morpheme '-myenseo' to the Chinese expression - based on Korean-Chinese parallel corpus (한국어 연결어미 '-면서'와 중국어 대응표현의 대조연구 -한·중 병렬 말뭉치를 기반으로)

  • YI, CHAO
    • Cross-Cultural Studies
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    • v.37
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    • pp.309-334
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    • 2014
  • This study is based on the Korean-Chinese parallel corpus, utilizing the Korean connective morpheme '-myenseo' and contrasting with the Chinese expression. Korean learners often struggle with the use of Korean Connective Morpheme especially when there is a lexical gap between their mother language. '-myenseo' is of the most use Korean Connective Morpheme, it usually contrast to the Chinese coordinating conjunction. But according to the corpus, the contrastive Chinese expression to '-myenseo' is more than coordinating conjunction. So through this study, can help the Chinese Korean language learners learn easier while studying '-myenseo', because the variety Chinese expression are found from the parallel corpus that related to '-myenseo'. In this study, firstly discussed the semantic features and syntactic characteristics of '-myenseo'. The significant semantic features of '-myenseo' are 'simultaneous' and 'conflict'. So in this chapter the study use examples of usage to analyse the specific usage of '-myenseo'. And then this study analyse syntactic characteristics of '-myenseo' through the subject constraint, predicate constraints, temporal constraints, mood constraints, negatives constraints. then summarize them into a table. And the most important part of this study is Chapter 4. In this chapter, it contrasted the Korean connective morpheme '-myenseo' to the Chinese expression by analysing the Korean-Chinese parallel corpus. As a result of the analysis, the frequency of the Chinese expression that contrasted to '-myenseo' is summarized into

    . It can see from the table that the most common Chinese expression comparative to '-myenseo' is non-marker patterns. That means the connection of sentence in Korean can use connective morpheme what is a clarifying linguistic marker, but in Chinese it often connect the sentence by their intrinsic logical relationships. So the conclusion of this chapter is that '-myenseo' can be comparative to Chinese conjunction, expression, non-marker patterns and liberal translation patterns, which are more than Chinese conjunction that discovered before. In the last Chapter, as the conclusion part of this study, it summarized and suggest the limitations and the future research direction.


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