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Institution

Kyungpook National University

EducationDaegu, South Korea
About: Kyungpook National University is a education organization based out in Daegu, South Korea. It is known for research contribution in the topics: Population & Large Hadron Collider. The organization has 20497 authors who have published 42107 publications receiving 834608 citations.


Papers
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Journal ArticleDOI
TL;DR: This paper presents a nine-phase permanent-magnet synchronous motor (PMSM) drive system based on multiple three-phase voltage source inverters that can be controlled by the well-known d-q control theory.
Abstract: This paper presents a nine-phase permanent-magnet synchronous motor (PMSM) drive system based on multiple three-phase voltage source inverters. The nine-phase PMSM was developed as a traction motor for an ultrahigh-speed elevator. The mathematical model of the motor was simplified through symmetry of the system. Using the simplified model, the drive system can be controlled by the well-known d-q control theory. The feasibility and validity of the drive system were experimentally demonstrated at the world's tallest elevator test tower. Moreover, an additional experiment was performed to ensure the fault-tolerance capability of the system.

178 citations

Journal ArticleDOI
K. Hayasaka1, K. Hayasaka2, K. Abe1, K. Abe3  +268 moreInstitutions (42)
TL;DR: In this paper, a search for the lepton flavor violating τ−→μ−γ and τ −→e−γ decays based on 535 fb−1 of data accumulated at the Belle experiment is reported.

178 citations

Journal ArticleDOI
TL;DR: Non‐obese diabetic (NOD) mice are regarded as being excellent animal models of human type 1 diabetes or insulin dependent diabetes (IDDM).
Abstract: Background Non-obese diabetic (NOD) mice are regarded as being excellent animal models of human type 1 diabetes or insulin dependent diabetes (IDDM). This study investigated the beneficial effects of genistein and daidzein on IDDM, an autoimmune disease. Methods Female NOD mice were divided into control, genistein (0.02%, w/w) and daidzein (0.02%, w/w) groups. Blood glucose level, plasma biomarkers, hepatic glucose and lipid regulating enzyme activities and pancreas immunohistochemistry analysis were examined after a 9-week experimental period. Results Blood glucose levels of genistein and daidzein groups were 40 and 36% of control value at the end of study (9th week). The genistein and daidzein supplements increased insulin/glucagon ratio and C-peptide level with preservation of insulin staining β-cell of pancreas in the NOD mice. In the liver, genistein and daidzein supplements resulted in lowering glucose-6-phosphatase (G6Pase) and phosphoenolpyruvate carboxykinase (PEPCK) activities, while increasing two lipogenic enzymes activities, malic enzyme and glucose-6-phosphate dehydrogenase (G6PD), compared to the control group. Significantly, genistein and daidzein supplementation lowered the activities of fatty acid β-oxidation and carnitine palmitoyltransferase (CPT) in these mice. Genistein and daidzein also improved plasma triglyceride and free fatty acid (FFA) concentrations compared to the control group. Conclusions These results suggest that genistein and daidzein play important roles in regulation of glucose homeostasis in type 1 diabetic mice by down-regulating G6Pase, PEPCK, fatty acid β-oxidation and CPT activities, while up-regulating malic enzyme and G6PD activities in liver with preservation of pancreatic β-cells. The supplementation of genistein and daidzein are seemingly helpful for preventing IDDM onset. Copyright © 2007 John Wiley & Sons, Ltd.

178 citations

Journal ArticleDOI
TL;DR: The findings suggest the potential of nanoceria to modify crop physiology and food quality with unknown consequences for living organisms.
Abstract: The implications of engineered nanomaterials on crop productivity and food quality are not yet well understood. The impact of cerium oxide nanoparticles (nCeO2) on growth and yield attributes and nutritional composition in wheat (Triticum aestivum L.) was examined. Wheat was cultivated to grain production in soil amended with 0, 125, 250, and 500 mg of nCeO2/kg (control, nCeO2-L, nCeO2-M, and nCeO2-H, respectively). At harvest, grains and tissues were analyzed for mineral, fatty acid, and amino acid content. Results showed that, relative to the control, nCeO2-H improved plant growth, shoot biomass, and grain yield by 9.0%, 12.7%, and 36.6%, respectively. Ce accumulation in roots increased at increased nCeO2 concentration but did not change across treatments in leaves, hull, and grains, indicating a lack of Ce transport to the above-ground tissues. nCeO2 modified S and Mn storage in grains. nCeO2-L modified the amino acid composition and increased linolenic acid by up to 6.17% but decreased linoleic acid by up to 1.63%, compared to the other treatments. The findings suggest the potential of nanoceria to modify crop physiology and food quality with unknown consequences for living organisms.

178 citations

Journal ArticleDOI
TL;DR: In this article, a critical function of ER-bound transcription factor, CREBH, in the regulation of hepatic gluconeogenesis is reported, which suggests a crucial role for CREB h in theregulation of hepatics glucose metabolism in mammals.

178 citations


Authors

Showing all 20671 results

NameH-indexPapersCitations
Hyun-Chul Kim1764076183227
David R. Jacobs1651262113892
Yang Yang1642704144071
Yongsun Kim1562588145619
Jongmin Lee1502257134772
Inkyu Park1441767109433
Christopher George Tully1421843111669
Teruki Kamon1422034115633
Manfred Paulini1411791110930
Kazuhiko Hara1411956107697
Luca Lista1402044110645
Dong-Chul Son138137098686
Christoph Paus1371585100801
Frank Filthaut1351684103590
Andreas Warburton135157897496
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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
202375
2022317
20213,152
20203,071
20192,763
20182,664