Browsing by Author "Lee, J.M."

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Electronic states and local structures of Cu ions in electrodeposited thin films of Cu and Cu2O from X-ray absorption spectra
(Physica Status Solidi b (basic solid sates physics), 2006) Wijesundera, R.P.; Hidaka, M.; Siripala, W.; Choi Sun-Hee; Sung, N.E.; Kim, M.G.; Lee, J.M.
X-ray absorption spectra near Cu K edges have been obtained for Cu and Cu2O thin films potentiostatically electrodeposited in an acetate bath. The electronic states of Cu ions and the local structures around these ions are studied using X-ray absorption near-edge structure (XANES) and extended X-ray absorption fine structure (EXAFS) spectroscopy, respectively. The inner strains in micro-size crystals of the electrodeposited Cu thin film are less than those of a commercial Cu foil. The partial electronic states of Cu ions near the Fermi level (EF) and the local structure around these ions show a systematic transformation from a Cu2O single phase (Phase I), to a Cu2O?Cu intermediate phase (Phase II) and a Cu single phase (Phase III) in thin films electrodeposited on titanium substrates for the deposition potential range of ?100 to ?900 mV. Phase II consists of independent Cu2O-like and Cu-like local structures, but not a Cu2O?Cu complex. Phase II is also characterized by a transition region from the semiconductor Cu2O to the metal Cu for the Cu electronic state having a p-like character near the Fermi level in the oxygen O-2p conduction band. (? 2006 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)
Genome-wide trans-ancestry meta-analysis provides insight into the genetic architecture oftype 2 diabetes susceptibility
(Nature Publishing Company, 2014) Mahajan, A.; Go, M.J.; Zhang, W.; Below, J.E.; Gaulton, K.J.; Ferreira, T.; Horikoshi, M.; Johnson, A.D.; Ng, M.C.; Prokopenko, I.; Saleheen, D.; Wang, X.; Zeggini, E.; Abecasis, G.R.; Adair, L.S.; Almgren, P.; Atalay, M.; Aung, T.; Baldassarre, D.; Balkau, B.; Bao, Y.; Barnett, A.H.; Barroso, I.; Basit, A.; Been, L.F.; Beilby, J.; Bell, G.I.; Benediktsson, R.; Bergman, R.N.; Boehm, B.O.; Boerwinkle, E.; Bonnycastle, L.L.; Burtt, N.; Cai, Q.; Campbell, H.; Carey, J.; Cauchi, S.; Caulfield, M.; Chan, J.C.; Chang, L.C.; Chang, T.J.; Chang, Y.C.; Charpentier, G.; Chen, C.H.; Chen, H.; Chen, Y.T.; Chia, K.S.; Chidambaram, M.; Chines, P.S.; Cho, N.H.; Cho, Y.M.; Chuang, L.M.; Collins, F.S.; Cornelis, M.C.; Couper, D.J.; Crenshaw, A.T.; van Dam, R.M.; Danesh, J.; Das, D.; de Faire, U.; Dedoussis, G.; Deloukas, P.; Dimas, A.S.; Dina, C.; Doney, A.S.; Donnelly, P.J.; Dorkhan, M.; van Duijn, C.; Dupuis, J.; Edkins, S.; Elliott, P.; Emilsson, V.; Erbel, R.; Eriksson, J.G.; Escobedo, J.; Esko, T.; Eury, E.; Florez, J.C.; Fontanillas, P.; Forouhi, N.G.; Forsen, T.; Fox, C.; Fraser, R.M.; Frayling, T.M.; Froguel, P.; Frossard, P.; Gao, Y.; Gertow, K.; Gieger, C.; Gigante, B.; Grallert, H.; Grant, G.B.; Grrop, L.C.; Groves, C.J.; Grundberg, E.; Guiducci, C.; Hamsten, A.; Han, B.G.; Hara, K.; Hassanali, N.; Hattersley, A.T.; Hayward, C.; Hedman, A.K.; Herder, C.; Hofman, A.; Holmen, O.L.; Hovingh, K.; Hreidarsson, A.B.; Hu, C.; Hu, F.B.; Hui, J.; Humphries, S.E.; Hunt, S.E.; Hunter, D.J.; Hveem, K.; Hydrie, Z.I.; Ikegami, H.; Illig, T.; Ingelsson, E.; Islam, M.; Isomaa, B.; Jackson, A.U.; Jafar, T.; James, A.; Jia, W.; Jöckel, K.H.; Jonsson, A.; Jowett, J.B.; Kadowaki, T.; Kang, H.M.; Kanoni, S.; Kao, W.H.; Kathiresan, S.; Kato, N.; Katulanda, P.; Keinanen-Kiukaanniemi, K.M.; Kelly, A.M.; Khan, H.; Khaw, K.T.; Khor, C.C.; Kim, H.L.; Kim, S.; Kim, Y.J.; Kinnunen, L.; Klopp, N.; Kong, A.; Korpi-Hyövälti, E.; Kowlessur, S.; Kraft, P.; Kravic, J.; Kristensen, M.M.; Krithika, S.; Kumar, A.; Kumate, J.; Kuusisto, J.; Kwak, S.H.; Laakso, M.; Lagou, V.; Lakka, T.A.; Langenberg, C.; Langford, C.; Lawrence, R.; Leander, K.; Lee, J.M.; Lee, N.R.; Li, M.; Li, X.; Li, Y.; Liang, J.; Liju, S.; Lim, W.Y.; Lind, L.; Lindgren, C.M.; Lindholm, E.; Liu, C.T.; Liu, J.J.; Lobbens, S.; Long, J.; Loos, R.J.; Lu, W.; Luan, J.; Lyssenko, V.; Ma, R.C.; Maeda, S.; Mägi, R.; Männisto, S.; Matthews, D.R.; Meigs, J.B.; Melander, O.; Metspalu, A.; Meyer, J.; Mirza, G.; Mihailov, E.; Moebus, S.; Mohan, V.; Mohlke, K.L.; Morris, A.D.; Mühleisen, T.W.; Müller-Nurasyid, M.; Musk, B.; Nakamura, J.; Nakashima, E.; Navarro, P.; Ng, P.K.; Nica, A.C.; Nilsson, P.M.; Njolstad, I.; Nöthen, M.M.; Ohnaka, K.; Ong, T.H.; Owen, K.R.; Palmer, C.N.; Pankow, J.S.; Park, K.S.; Parkin, M.; Pechlivanis, S.; Pedersen, N.L.; Peltonen, L.; Perry, J.R.; Peters, A.; Pinidiyapathirage, J.M.; Platou, C.G.; Potter, S.; Price, J.F.; Qi, L.; Radha, V.; Rallidis, L.; Rasheed, A.; Rathman, W.; Rauramaa, R.; Raychaudhuri, S.; Rayner, N.W.; Rees, S.D.; Rehnberg, E.; Ripatti, S.; Robertson, N.; Roden, M.; Rossin, E.J.; Rudan, I.; Rybin, D.; Saaristo, T.E.; Salomaa, V.; Saltevo, J.; Samuel, M.; Sanghera, D.K.; Saramies, J.; Scott, J.; Scott, L.J.; Scott, R.A.; Segrè, A.V.; Sehmi, J.; Sennblad, B.; Shah, N.; Shah, S.; Shera, A.S.; Shu, X.O.; Shuldiner, A.R.; Sigurdsson, G.; Sijbrands, E.; Silveira, A.; Sim, X.; Sivapalaratnam, S.; Small, K.S.; So, W.Y.; Stancáková, A.; Stefansson, K.; Steinbach, G.; Steinthorsdottir, V.; Stirrups, K.; Strawbridge, R.J.; Stringham, H.M.; Sun, Q.; Suo, C.; Syvänen, A.C.; Takayanagi, R.; Takeuchi, F.; Tay, W.T.; Teslovich, T.M.; Thorand, B.; Thorleifsson, G.; Thorsteinsdottir, U.; Tikkanen, E.; Trakalo, J.; Tremoli, E.; Trip, M.D.; Tsai, F.J.; Tuomi, T.; Tuomilehto, J.; Uitterlinden, A.G.; Valladares-Salgado, A.; Vedantam, S.; Veglia, F.; Voight, B.F.; Wang, C.; Wareham, N.J.; Wennauer, R.; Wickremasinghe, A.R.; Wilsgaard, T.; Wilson, J.F.; Wiltshire, S.; Winckler, W.; Wong, T.Y.; Wood, A.R.; Wu, J.Y.; Wu, Y.; Yamamoto, K.; Yamauchi, T.; Yang, M.; Yengo, L.; Yokota, M.; Young, R.; Zabaneh, D.; Zhang, F.; Zhang, R.; Zheng., W.; Zimmet, P.Z.; Altshuler, D.; Bowden, D.W.; Cho, Y.S.; Cox, N.J.; Cruz, M.; Hanis, C.L.; Kooner, J.; Lee, J.Y.; Seielstad, M.; Teo, Y.Y.; Boehnke, M.; Parra, E.J.; Chambers, J.C.; Tai, E.S.; McCarthy, M.I.; Morris, A.P.
To further understanding of the genetic basis of type 2 diabetes (T2D) susceptibility, we aggregated published meta-analyses of genome-wide association studies (GWAS), including 26,488 cases and 83,964 controls of European, east Asian, south Asian and Mexican and Mexican American ancestry. We observed a significant excess in the directional consistency of T2D risk alleles across ancestry groups, even at SNPs demonstrating only weak evidence of association. By following up the strongest signals of association from the trans-ethnic meta-analysis in an additional 21,491 cases and 55,647 controls of European ancestry, we identified seven new T2D susceptibility loci. Furthermore, we observed considerable improvements in the fine-mapping resolution of common variant association signals at several T2D susceptibility loci. These observations highlight the benefits of trans-ethnic GWAS for the discovery and characterization of complex trait loci and emphasize an exciting opportunity to extend insight into the genetic architecture and pathogenesis of human diseases across populations of diverse ancestry.
Metal-insulator transition induced by electronic and structural modulations in oxygen-deficient perovskite-type TbBaCo2O5.5
(Physica Status Solidi b (basic solid state physics), 2006) Hidaka, M.; Soejima, M.; Wijesundera, R.P.; Soda, M.; Sato, M.; Choi Sun-Hee; Sung, N.E.; Kim, M.G.; Lee, J.M.
The metal?insulator (M?I) transition at about 340 K (TMI) in TbBaCo2O5.5 has been investigated by X-ray absorption spectra near Tb-LIII, Ba-LII, and Co-K edges. In the metallic and insulating phases, the high-density unoccupied bands of Tb-6d? and Ba-6d? occupy just above a Fermi level (EF), while the positive charge-transfer Tb-5dnLm and Ba-5dnLm bands are just below EF. The narrow positive charge-transfer Co-3d7(eg)L band is just below EF, where L represents a hole induced in the valence band of O-2p. It is considered that the metallic conductivity above TMI results from the (p?d) hybridized holes in the top region of the O-2p valence band and the hopping electrons in the bottom of the O-2p conduction band. The spin-state transition for Co ions in the CoO6 octahedra and the CoO5 pyramids does not occur at TMI. The local structural distortion induced around the Ba ions, but not around the Tb and Co ions, mainly affects the electronic configuration interaction between the Ba-5d and the O-2p orbitals in BaO. (? 2006 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)