Institution
Korea University
Education•Seoul, South Korea•
About: Korea University is a education organization based out in Seoul, South Korea. It is known for research contribution in the topics: Population & Thin film. The organization has 39756 authors who have published 82424 publications receiving 1860927 citations. The organization is also known as: Bosung College & Bosung Professional College.
Topics: Population, Thin film, Catalysis, Large Hadron Collider, Cancer
Papers published on a yearly basis
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TL;DR: Findings provide support to the study's proposition that power-dependence relationships in a keiretsu influence member firms' appropriation of group affiliation benefits in pursuing diversification strategies.
Abstract: Conceptualizing the keiretsu as a power-dependence system, we propose that benefits accruing from keiretsu affiliation differ across member firms, depending on their power in (or dependence on) the keiretsu. By integrating power with governance and internal market perspectives on group affiliation, we develop and find general support for the hypotheses that powerful keiretsu member firms are able to place more emphasis on growth in pursuing product and international diversification, whereas less powerful keiretsu member firms are subject to strong monitoring and emphasize profitability. These findings provide support to the study's proposition that power-dependence relationships in a keiretsu influence member firms' appropriation of group affiliation benefits in pursuing diversification strategies. Copyright © 2004 John Wiley & Sons, Ltd.
279 citations
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TL;DR: Among the three compounds, compound 1 yielded the weakest antioxidant activity, and the DPPH scavenging and lipid peroxidation inhibitory activity was lower than those of chlorogenic and caffeic acids.
Abstract: One known and two novel antioxidant compounds have been isolated from bamboo (Phyllostachys edulis). The butanol-soluble extract of the bamboo leaves was found to have a significant antioxidant activity, as measured by scavenging the stable 1,1-diphenyl-2-picrylhydrazyl (DPPH) free radical and the superoxide anion radical (O(2)(-)) in the xanthine/xanthine oxidase assay system. Antioxidant activity-directed fractionation of the extract led to the isolation and characterization of three structural isomeric chlorogenic acid derivatives: 3-O-(3'-methylcaffeoyl)quinic acid (1), 5-O-caffeoyl-4-methylquinic acid (2), and 3-O-caffeoyl-1-methylquinic acid (3). Compounds 2 and 3 were isolated and characterized for the first time from the natural products. In the DPPH scavenging assay as well as in the iron-induced rat microsomal lipid peroxidation system, compounds 2 (IC(50) = 8.8 and 19.2 microM) and 3 (IC(50) = 6.9 and 14.6 microM) showed approximately 2-4 times higher antioxidant activity than did chlorogenic acid (IC(50) = 12.3 and 28.3 microM) and other related hydroxycinnamates such as caffeic acid (IC(50) =13.7 and 25.5 microM) and ferulic acid (IC(50) = 36.5 and 56.9 microM). Among the three compounds, compound 1 yielded the weakest antioxidant activity, and the DPPH scavenging and lipid peroxidation inhibitory activity (IC(50) = 16.0 and 29.8 microM) was lower than those of chlorogenic and caffeic acids. All three compounds exhibited both superoxide scavenging activities and inhibitory effects on xanthine oxidase. Their superoxide anion (O(2)(-)) scavenging activities (IC(50) = 1, 4.3 microM; 2, 2.8 microM; and 3, 1.2 microM) were markedly stronger than those of ascorbic acid (IC(50) = 56.0 microM), alpha-tocopherol (IC(50) > 100 microM), and other test compounds, although their inhibition effects on xanthine oxidase may contribute to the potent scavenging activity. alpha-Tocopherol exerted a significant inhibitory effect (65.5% of the control) on superoxide generation in 12-O-tetradecanoylphorbol-13-acetate-induced human promyelocytic leukemia HL-60 cells, and compound 3 showed moderate activity (36.0%). On the other hand, other compounds including 1, 2, chlorogenic acid, and other antioxidants were weakly active (24.8-10.1%) in the suppression of superoxide generation.
279 citations
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National Institutes of Health1, National Health Research Institutes2, Seoul National University3, National University of Singapore4, Yeshiva University5, Tianjin Medical University6, Fudan University7, University of Hong Kong8, Vanderbilt University9, Kyungpook National University10, Academia Sinica11, Korea University12, Nanjing Medical University13, Westat14, Kindai University15, Chonnam National University16, National Yang-Ming University17, Yale University18, China Medical University (PRC)19, Peking Union Medical College20, Anhui Medical University21, Agency for Science, Technology and Research22, Chang Gung University23, Huazhong University of Science and Technology24, Memorial Sloan Kettering Cancer Center25, National Taiwan University26, Chinese Center for Disease Control and Prevention27, Kaohsiung Medical University28, National Cheng Kung University29, National Cancer Research Institute30, China Medical University (Taiwan)31, Utrecht University32, Memorial Hospital of South Bend33
TL;DR: It is observed that there is no evidence of association for lung cancer at 15q25 in never-smoking women in Asia, providing strong evidence that this locus is not associated with lung cancer independent of smoking.
Abstract: To identify common genetic variants that contribute to lung cancer susceptibility, we conducted a multistage genome-wide association study of lung cancer in Asian women who never smoked. We scanned 5,510 never-smoking female lung cancer cases and 4,544 controls drawn from 14 studies from mainland China, South Korea, Japan, Singapore, Taiwan and Hong Kong. We genotyped the most promising variants (associated at P < 5 × 10(-6)) in an additional 1,099 cases and 2,913 controls. We identified three new susceptibility loci at 10q25.2 (rs7086803, P = 3.54 × 10(-18)), 6q22.2 (rs9387478, P = 4.14 × 10(-10)) and 6p21.32 (rs2395185, P = 9.51 × 10(-9)). We also confirmed associations reported for loci at 5p15.33 and 3q28 and a recently reported finding at 17q24.3. We observed no evidence of association for lung cancer at 15q25 in never-smoking women in Asia, providing strong evidence that this locus is not associated with lung cancer independent of smoking.
279 citations
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TL;DR: With the hydrophobic passivation, the perovskite solar cell shows negligible degradation after a 30 day storage in ambient atmosphere, and suggests new kind of approach to enhance stability of perovSKite solar cells to moisture.
Abstract: In this study, a novel and facile passivation process for a perovskite solar cell is reported. Poor stability in ambient atmosphere, which is the most critical demerit of a perovskite solar cell, is overcome by a simple passivation process using a hydrophobic polymer layer. Teflon, the hydrophobic polymer, is deposited on the top of a perovskite solar cell by a spin-coating method. With the hydrophobic passivation, the perovskite solar cell shows negligible degradation after a 30 day storage in ambient atmosphere. Suppressed degradation of the perovskite film is proved in various ways: X-ray diffraction, light absorption spectrum, and quartz crystal microbalance. This simple but effective passivation process suggests new kind of approach to enhance stability of perovskite solar cells to moisture.
279 citations
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TL;DR: In this paper, the authors provide an empirical investigation of the hypothesis that companies engage in corporate social responsibility (CSR) in order to offset corporate social irresponsibility (CSI).
Abstract: This paper provides an empirical investigation of the hypothesis that companies engage in corporate social responsibility (CSR) in order to offset corporate social irresponsibility (CSI). We find general support for the relationship that when companies do more “harm,” they also do more “good.” The empirical analysis is based on an extensive 15-year panel dataset that covers nearly 3,000 publicly traded companies. In addition to the overall finding that more CSI results in more CSR, we find evidence of heterogeneity among industries, where the effect is stronger in industries where CSI tends to be the subject of greater public scrutiny. We also investigate the degree of substitutability between different categories of CSR and CSI. Within the categories of community relations, environment, and human rights—arguably among those dimensions of social responsibility that are most salient—there is a strong within-category relationship. In contrast, the within-category relationship for corporate governance is weak, but CSI related to corporate governance appears to increase CSR in most other categories. Thus, when CSI concerns arise about corporate governance, companies seemingly choose to offset with CSR in other dimensions, rather than reform governance itself.
279 citations
Authors
Showing all 40083 results
Name | H-index | Papers | Citations |
---|---|---|---|
Anil K. Jain | 183 | 1016 | 192151 |
Hyun-Chul Kim | 176 | 4076 | 183227 |
Yongsun Kim | 156 | 2588 | 145619 |
Jongmin Lee | 150 | 2257 | 134772 |
Byung-Sik Hong | 146 | 1557 | 105696 |
Daniel S. Berman | 141 | 1363 | 86136 |
Christof Koch | 141 | 712 | 105221 |
David Y. Graham | 138 | 1047 | 80886 |
Suyong Choi | 135 | 1495 | 97053 |
Rudolph E. Tanzi | 135 | 638 | 85376 |
Sung Keun Park | 133 | 1567 | 96933 |
Tae Jeong Kim | 132 | 1420 | 93959 |
Robert S. Brown | 130 | 1243 | 65822 |
Mohammad Khaja Nazeeruddin | 129 | 646 | 85630 |
Klaus-Robert Müller | 129 | 764 | 79391 |