Search Results - (Author, Cooperation:D. H. Lee)
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1Latest Papers from Table of Contents or Articles in PressJ. S. Choi ; J. S. Kim ; I. S. Byun ; D. H. Lee ; M. J. Lee ; B. H. Park ; C. Lee ; D. Yoon ; H. Cheong ; K. H. Lee ; Y. W. Son ; J. Y. Park ; M. Salmeron
American Association for the Advancement of Science (AAAS)
Published 2011Staff ViewPublication Date: 2011-07-02Publisher: American Association for the Advancement of Science (AAAS)Print ISSN: 0036-8075Electronic ISSN: 1095-9203Topics: BiologyChemistry and PharmacologyComputer ScienceMedicineNatural Sciences in GeneralPhysicsPublished by: -
2Latest Papers from Table of Contents or Articles in PressKim, T., Moon, J. H., Ahn, J.-S., Kim, Y.-K., Lee, S.-S., Ahn, S.-Y., Jung, S.-H., Yang, D.-H., Lee, J.-J., Choi, S. H., Lee, J.-y., Tyndel, M. S., Shin, M.-G., Lee, Y. J., Sohn, S. K., Park, S.-K., Zhang, Z., Kim, H.-J., Kim, D. D. H.
American Society of Hematology (ASH)
Published 2018Staff ViewPublication Date: 2018-10-12Publisher: American Society of Hematology (ASH)Print ISSN: 0006-4971Electronic ISSN: 1528-0020Topics: BiologyMedicineKeywords: Transplantation, Myeloid Neoplasia, Clinical Trials and ObservationsPublished by: -
3Latest Papers from Table of Contents or Articles in PressM. Yi, A. Frano, D. H. Lu, Y. He, Meng Wang, B. A. Frandsen, A. F. Kemper, R. Yu, Q. Si, L. Wang, M. He, F. Hardy, P. Schweiss, P. Adelmann, T. Wolf, M. Hashimoto, S.-K. Mo, Z. Hussain, M. Le Tacon, A. E. Böhmer, D.-H. Lee, Z.-X. Shen, C. Meingast, and R. J. Birgeneau
American Physical Society (APS)
Published 2018Staff ViewPublication Date: 2018-09-19Publisher: American Physical Society (APS)Print ISSN: 0031-9007Electronic ISSN: 1079-7114Topics: PhysicsKeywords: Condensed Matter: Electronic Properties, etc.Published by: -
4Latest Papers from Table of Contents or Articles in PressM. Zemcov ; J. Smidt ; T. Arai ; J. Bock ; A. Cooray ; Y. Gong ; M. G. Kim ; P. Korngut ; A. Lam ; D. H. Lee ; T. Matsumoto ; S. Matsuura ; U. W. Nam ; G. Roudier ; K. Tsumura ; T. Wada
American Association for the Advancement of Science (AAAS)
Published 2014Staff ViewPublication Date: 2014-11-08Publisher: American Association for the Advancement of Science (AAAS)Print ISSN: 0036-8075Electronic ISSN: 1095-9203Topics: BiologyChemistry and PharmacologyComputer ScienceMedicineNatural Sciences in GeneralPhysicsPublished by: -
5Latest Papers from Table of Contents or Articles in PressH. Nam ; N. E. Lewis ; J. A. Lerman ; D. H. Lee ; R. L. Chang ; D. Kim ; B. O. Palsson
American Association for the Advancement of Science (AAAS)
Published 2012Staff ViewPublication Date: 2012-09-01Publisher: American Association for the Advancement of Science (AAAS)Print ISSN: 0036-8075Electronic ISSN: 1095-9203Topics: BiologyChemistry and PharmacologyComputer ScienceMedicineNatural Sciences in GeneralPhysicsKeywords: Catalysis ; Computational Biology ; Enzymes/*genetics/*metabolism ; Escherichia coli/*enzymology/genetics ; *Evolution, Molecular ; *Metabolic Networks and Pathways ; *Selection, Genetic ; Substrate SpecificityPublished by: -
6Latest Papers from Table of Contents or Articles in PressC. L. Smallwood ; J. P. Hinton ; C. Jozwiak ; W. Zhang ; J. D. Koralek ; H. Eisaki ; D. H. Lee ; J. Orenstein ; A. Lanzara
American Association for the Advancement of Science (AAAS)
Published 2012Staff ViewPublication Date: 2012-06-02Publisher: American Association for the Advancement of Science (AAAS)Print ISSN: 0036-8075Electronic ISSN: 1095-9203Topics: BiologyChemistry and PharmacologyComputer ScienceMedicineNatural Sciences in GeneralPhysicsPublished by: -
7Latest Papers from Table of Contents or Articles in PressStaff View
Publication Date: 2011-04-09Publisher: American Association for the Advancement of Science (AAAS)Print ISSN: 0036-8075Electronic ISSN: 1095-9203Topics: BiologyChemistry and PharmacologyComputer ScienceMedicineNatural Sciences in GeneralPhysicsPublished by: -
8Latest Papers from Table of Contents or Articles in PressJ. J. Lee ; F. T. Schmitt ; R. G. Moore ; S. Johnston ; Y. T. Cui ; W. Li ; M. Yi ; Z. K. Liu ; M. Hashimoto ; Y. Zhang ; D. H. Lu ; T. P. Devereaux ; D. H. Lee ; Z. X. Shen
Nature Publishing Group (NPG)
Published 2014Staff ViewPublication Date: 2014-11-14Publisher: Nature Publishing Group (NPG)Print ISSN: 0028-0836Electronic ISSN: 1476-4687Topics: BiologyChemistry and PharmacologyMedicineNatural Sciences in GeneralPhysicsPublished by: -
9Latest Papers from Table of Contents or Articles in PressD. H. Lee ; K. H. Kwon ; C. S. Yi
American Association for the Advancement of Science (AAAS)
Published 2011Staff ViewPublication Date: 2011-09-17Publisher: American Association for the Advancement of Science (AAAS)Print ISSN: 0036-8075Electronic ISSN: 1095-9203Topics: BiologyChemistry and PharmacologyComputer ScienceMedicineNatural Sciences in GeneralPhysicsPublished by: -
10Latest Papers from Table of Contents or Articles in PressStaff View
Publication Date: 2018-04-28Publisher: The American Society for Microbiology (ASM)Print ISSN: 0022-538XElectronic ISSN: 1098-5514Topics: MedicinePublished by: -
11Latest Papers from Table of Contents or Articles in PressHe, Y., Hashimoto, M., Song, D., Chen, S.- D., He, J., Vishik, I. M., Moritz, B., Lee, D.- H., Nagaosa, N., Zaanen, J., Devereaux, T. P., Yoshida, Y., Eisaki, H., Lu, D. H., Shen, Z.- X.
American Association for the Advancement of Science (AAAS)
Published 2018Staff ViewPublication Date: 2018-10-05Publisher: American Association for the Advancement of Science (AAAS)Print ISSN: 0036-8075Electronic ISSN: 1095-9203Topics: BiologyChemistry and PharmacologyGeosciencesComputer ScienceMedicineNatural Sciences in GeneralPhysicsKeywords: PhysicsPublished by: -
12Articles: DFG German National LicensesLee, D. H. ; Kim, D. W. ; Leem, Y. A. ; Oh, J. C. ; Park, G. H. ; Woo, J. C. ; Yoo, K. H.
[S.l.] : American Institute of Physics (AIP)
Published 1993Staff ViewISSN: 1089-7550Source: AIP Digital ArchiveTopics: PhysicsNotes: Photoluminescence (PL) and PL excitation (PLE) experiments on a GaAs/Al0.25Ga0.75As asymmetric coupled double quantum well are reported. In PLE, the seven peaks, four related to the heavy-hole coupled and the rest to the light-hole coupled excitonic states, are observed. The positions of seven peaks observed in PLE are in good agreement with the calculated results of multi-band envelope function approximation using the transfer matrix method. The result of the temperature-dependent PL above 100 K shows that, even though the wavefunctions are localized in different wells separated by 8 monolayer barrier, the heavy-hole coupled excitons in the two lowest levels are in thermal equilibrium. The observed activation energy is equal to the difference between the two levels.Type of Medium: Electronic ResourceURL: -
13Articles: DFG German National LicensesLee, D. H. ; Park, B. ; Poker, D. B. ; Riester, L. ; Feng, Z. C. ; Baglin, J. E. E.
[S.l.] : American Institute of Physics (AIP)
Published 1996Staff ViewISSN: 1089-7550Source: AIP Digital ArchiveTopics: PhysicsNotes: The feasibility of producing carbon nitride has been studied by ion implantation into amorphous carbon. Thin films were formed with 100 keV N+ or 80 keV C+ ions at various target temperatures and ion doses. The apparent surface hardness measured by nanoindentation with load-displacement data shows an optimum value of 22.3±0.4 GPa with the ion dose of 2×1017 N+/cm2 implanted at −100 °C, while the hardness of the unimplanted amorphous carbon is 6.0±0.2 GPa. Self-implantation by carbon also produces similar hardness enhancement with a narrow temperature window. The maximum enhanced surface hardness is well correlated with the asymmetric diffuse peak at around 1500 cm−1 in Raman spectroscopy. © 1996 American Institute of Physics.Type of Medium: Electronic ResourceURL: -
14Articles: DFG German National LicensesLee, D. H. ; He, X. M. ; Walter, K. C. ; Nastasi, M. ; Tesmer, J. R. ; Tuszewski, M.
Woodbury, NY : American Institute of Physics (AIP)
Published 1998Staff ViewISSN: 1077-3118Source: AIP Digital ArchiveTopics: PhysicsNotes: Diamondlike carbon (DLC) was deposited on silicon using a plasma immersion ion deposition (PIID) method. Inductive radio-frequency plasma sources were used to generate Ar and C2H2 plasmas at low gas pressures ranging from 0.04 to 0.93 Pa. The film stress and hardness were sharply dependent upon bias voltage at an operating pressure of 0.04 Pa. A maximum hardness of 30 GPa and compressive stress of 9 GPa was observed at a pulsed bias of −150 V bias (carbon energy of 80 eV). The mechanical properties of DLC films are correlated with UV Raman peak positions which infer sp3-bonded carbon contents. © 1998 American Institute of Physics.Type of Medium: Electronic ResourceURL: -
15Articles: DFG German National LicensesLee, D. H. ; Li, Sheng S. ; Sauer, N. J. ; Chang, T. Y.
Woodbury, NY : American Institute of Physics (AIP)
Published 1989Staff ViewISSN: 1077-3118Source: AIP Digital ArchiveTopics: PhysicsNotes: A high quality In0.53Ga0.47As Schottky barrier diode fabricated by using a thin graded superlattice (SL) of In0.53Ga0.47As/In0.52Al0.48As grown by molecular beam epitaxy is reported for the first time in this letter. The effective Schottky barrier heights of ∼0.71 and ∼0.60 eV were obtained for the Au- and Cr-Schottky contacts, respectively. Excellent current-voltage and capacitance-voltage characteristics were obtained for these diodes. The graded InGaAs/InAlAs SL structure allows one to circumvent the problem of carrier pileup associated with abrupt heterostructures, and hence is advantageous for forming Schottky contacts on InGaAs for high-speed optoelectronic device applications.Type of Medium: Electronic ResourceURL: -
16Articles: DFG German National LicensesStaff View
ISSN: 1089-7550Source: AIP Digital ArchiveTopics: PhysicsNotes: A class of simple, translationally invariant, nearest-neighbor, isotropic XY models that possess novel topological defects will be presented.1,2 As the first example, I shall present a model that exhibits, in addition to integer vortices, half-integer-vortex, and "string'' excitations. The interaction between the half-integer vortices is a superposition of the usual logarithmic Coulomb potential and a linear potential mediated by the strings. Due to these new excitations the system possesses a rich phase diagram. As the second example, I shall present a model that supports commensurate and incommensurate vortices. Due to a novel ground-state degeneracy, the "charges'' of the incommensurate vortices are fixed by their cost in zero-point entropy and are independent of the parameters in the Hamiltonian. Again, as a result of these new defects the model exhibits a very rich phase diagram.Type of Medium: Electronic ResourceURL: -
17Articles: DFG German National LicensesStaff View
ISSN: 1089-7550Source: AIP Digital ArchiveTopics: PhysicsNotes: The equilibrium density of two-dimensional electron gas in a modulation-doped AlGaAs/GaAs heterojunction structure has been studied by considering the deep electron traps (i.e., DX center) in doped AlGaAs layer, the spatial distribution of electrons in three conduction-band minima (Γ, L, and X), and the heavy doping effect. It is shown that the amount of conduction band-bending increases and the equilibrium density of two-dimensional electron gas decreases significantly as a result of incorporating these effects.Type of Medium: Electronic ResourceURL: -
18Articles: DFG German National LicensesLee, D.-H. ; Lee, B.-C. ; Yoon, E.-J. ; Lee, K.-E. ; Park, S.-M. ; Pyo, H.-B. ; Choe, T.-B.
Oxford, UK : Blackwell Science Ltd
Published 2004Staff ViewISSN: 1468-2494Source: Blackwell Publishing Journal Backfiles 1879-2005Topics: MedicineNotes: The effects of several natural products on in vitro MMP-1 activity and UVA-induced MMP-1 synthesis in human dermal fibroblast (HDF) cultures were studied with the aim of developing novel anti-aging agents from natural sources. We measured MMP-1 activities by fluorescence assay using gelatin as substrates. In addition, UVA-induced MMP-1 expression was analyzed by enzyme-linked immunosorbent assay (ELISA) and gelatin-based zymography in HDF cultures, and RT-PCR techniques were used. The results showed a strong inhibitory effect of the extracts of Dicentra spectabilis and of the flower buds of Tussilago farfara. In a concentration of 0.05% (w/v), the extracts of the flower buds of Tussilago farfara and of Dicentra spectabilis inhibited MMP-1 activity by 92 and 87% respectively. At 0.1% (w/v), the extracts of the flower buds of Tussilago farfara and of Dicentra spectabilis suppressed the UVA-induced expression of MMP-1 by an amount similar to that with Vitamin C 200 μm. These results suggest that the extracts of Dicentra spectabilis and of the flower buds of Tussilago farfara effectively protect skin from UV-induced photoaging. Therefore, the extracts are thought to have potential as effective raw materials for anti-aging cosmetics.Type of Medium: Electronic ResourceURL: -
19Articles: DFG German National LicensesStaff View
ISSN: 1600-0846Source: Blackwell Publishing Journal Backfiles 1879-2005Topics: MedicineNotes: Background/aims: Biochemical changes occurring in epidermis are hardly visible on a conventionally acquired magnetic resonance image. Objectives of the present study were to noninvasively visualize the biochemical changes in skin layers and to investigate the feasibility of dermal NMR microscopy.Methods: 1H NMR microscopy was utilized to investigate histological changes and/or skin pathology between normal skin and abnormal skin. Animal skin was used for both in vivo and in vitro investigations while human skin for the in vivo study.Results: Relaxation times and diffusion information were found to be sensitive indicators of the biochemical changes arising from epidermis due to skin abnormality. Also, the swelling process of abnormal epidermis was monitored.Conclusion: Dermal NMR microscopy was found useful for the study of the biochemical changes occurring in thin skin layers.Type of Medium: Electronic ResourceURL: -
20Articles: DFG German National LicensesD'Andrea, M R ; Nagele, R G ; Wang, H-Y ; Peterson, P A ; Lee, D H S
Oxford, UK : Blackwell Science Ltd
Published 2001Staff ViewISSN: 1365-2559Source: Blackwell Publishing Journal Backfiles 1879-2005Topics: MedicineNotes: Amyloid has recently been shown to accumulate intracellularly in the brains of patients with Alzheimer's disease (AD), yet amyloid plaques are generally thought to arise from gradual extracellular amyloid deposition. We have investigated the possibility of a link between these two apparently conflicting observations.〈section xml:id="abs1-2"〉〈title type="main"〉Methods and results:Immunohistochemistry and digital image analysis was used to examine the detailed localization of β-amyloid42 (Aβ42), a major component of amyloid plaques, in the entorhinal cortex and hippocampus of AD brains. Aβ42 first selectively accumulates in the perikaryon of pyramidal cells as discrete, granules that appear to be cathepsin D-positive, suggesting that they may represent lysosomes or lysosome-derived structures. AD brain regions abundantly populated with pyramidal neurones exhibiting excessive Aβ42 accumulations also contained evidence of neuronal lysis. Lysis of these Aβ42-burdened neurones apparently resulted in a local, radial dispersion of their cytoplasmic contents, including Aβ42 and lysosomal enzymes, into the surrounding extracellular space. A nuclear remnant was found at the dense core of many amyloid plaques, strengthening the idea that each amyloid plaque represents the end product of a single neuronal cell lysis. The inverse relationship between the amyloid plaque density and pyramidal cell density in the AD brain regions also supports this possibility, as does the close correlation between plaque size and the size of local pyramidal cells.〈section xml:id="abs1-3"〉〈title type="main"〉Conclusions:Our findings suggest that excessive intracellular accumulation of Aβ42-positive material in pyramidal cells can result in cell lysis, and that cell lysis is an important source of amyloid plaques and neuronal loss in AD brains.Type of Medium: Electronic ResourceURL: