Search Results - (Author, Cooperation:Y. G. Kim)
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1Latest Papers from Table of Contents or Articles in PressN. Kamada ; Y. G. Kim ; H. P. Sham ; B. A. Vallance ; J. L. Puente ; E. C. Martens ; G. Nunez
American Association for the Advancement of Science (AAAS)
Published 2012Staff ViewPublication Date: 2012-05-15Publisher: American Association for the Advancement of Science (AAAS)Print ISSN: 0036-8075Electronic ISSN: 1095-9203Topics: BiologyChemistry and PharmacologyComputer ScienceMedicineNatural Sciences in GeneralPhysicsKeywords: Animals ; Bacterial Load ; Bacterial Proteins/genetics/metabolism ; Bacteroides/*growth & development ; Citrobacter rodentium/genetics/growth & development/immunology/*pathogenicity ; Enterobacteriaceae Infections/immunology/*microbiology ; Escherichia coli/*growth & development ; Feces/microbiology ; Gene Expression Regulation, Bacterial ; Germ-Free Life ; Intestinal Mucosa/*microbiology ; Intestines/*microbiology ; *Metagenome ; Mice ; Mice, Inbred C57BL ; *Microbial Interactions ; Specific Pathogen-Free Organisms ; Virulence Factors/genetics/metabolismPublished by: -
2Articles: DFG German National LicensesStaff View
ISSN: 1089-7623Source: AIP Digital ArchiveTopics: PhysicsElectrical Engineering, Measurement and Control TechnologyNotes: A standard system for low magnetic fields has been developed at the Korea Research Institute of Standards and Science. The system consists of a precision solenoid, He–Cs atomic magnetic resonance magnetometer, and apparatus for three-axis compensation of the Earth's magnetic field. The variations of the Earth's magnetic field are automatically compensated within 0.1 nT/h by a Cs atomic magnetic resonance field controller. The solenoid reproduces a dc field that is uniform at better than 3×10−7 within ±2 cm around the center. The experimentally measured coil constant and temperature coefficient of the solenoid are 1.231 0596×10−3 T/A (25 °C) and 3.8×10−7/°C, respectively. The standard serves for the calibration of magnetometers and uniform field coils, and also supports experiments related to research in magnetic fields in the range of (0.02–1.2) mT with (2–10)×10−6 uncertainty. © 2002 American Institute of Physics.Type of Medium: Electronic ResourceURL: -
3Articles: DFG German National LicensesChoi, G-S. ; Won, D-H. ; Lee, S-J. ; Lee, J-H. ; Kim, Y-G.
Oxford, UK : Blackwell Science Ltd
Published 2000Staff ViewISSN: 1365-2133Source: Blackwell Publishing Journal Backfiles 1879-2005Topics: MedicineType of Medium: Electronic ResourceURL: -
4Articles: DFG German National LicensesLee, P. C. Y. ; Kim, Y-G. ; Prevost, J. H.
[S.l.] : American Institute of Physics (AIP)
Published 1990Staff ViewISSN: 1089-7550Source: AIP Digital ArchiveTopics: PhysicsNotes: Exact solution of the three-dimensional linear equations of piezoelectromagnetism is obtained for doubly rotated piezoelectric crystal plates surrounded by vacuum and excited by face traction. A generalized Poynting's theorem is derived for general media in which electromagnetic and mechanical fields interact with each other. For linear piezoelectric crystals it is shown that the generalized theorem may still be interpreted as an energy theorem, and hence densities of energy stored in the electric, magnetic, and elastic strain fields can be identified. Radiated power, per unit surface area and averaged over the period, and induced strain and electric fields in the middle plane of the plate are calculated for doubly rotated quartz plates whose cut orientations follow the upper and lower loci of zeros of the first-order temperature coefficient of frequency of the x1 -thickness-shear mode. Quality factors and partition of stored energies are also examined.Type of Medium: Electronic ResourceURL: -
5Articles: DFG German National LicensesJANG, S. I. ; MARSDEN, M. J. ; KIM, Y. G. ; CHOI, M. S. ; SECOMBES, C. J.
Oxford, UK : Blackwell Publishing Ltd
Published 1995Staff ViewISSN: 1365-2761Source: Blackwell Publishing Journal Backfiles 1879-2005Topics: BiologyMedicineNotes: Abstract. Treatment of rainbow trout macrophages with glycyrrhizin (GL), an aqueous extract of licorice, Glycyrrhiza glabra, enhanced their respiratory burst activity. Maximal effects were seen using concentrations of 10–100 μml−1. GL also modulated trout lymphocytes, increasing proliferation responses to the mitogen phytohaemagglutinin some two-fold over a range of GL concentrations. In addition, GL elicited the release of a macrophage activating factor (MAF) from head kidney leucocytes, as assessed by the ability of generated supernatants to increase respiratory burst activity of target macrophages. MAF activity was most apparent using 100 μg ml−1 GL to induce MAF release and a 48-h incubation period with the target macrophages. Finally, GL was shown to enhance the release of MAF in response to the mitogen concanavalin A. The possible use of GL as a stimulant of fish innate defences is discussed.Type of Medium: Electronic ResourceURL: -
6Articles: DFG German National LicensesStaff View
ISSN: 1365-2133Source: Blackwell Publishing Journal Backfiles 1879-2005Topics: MedicineType of Medium: Electronic ResourceURL: -
7Articles: DFG German National LicensesStaff View
ISSN: 0378-1119Keywords: Escherichia coli ; Haemophilus influenzae ; overexpression ; recombinant DNA ; retroregulator stem-loop ; tac promoterSource: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: BiologyType of Medium: Electronic ResourceURL: -
8Articles: DFG German National LicensesStaff View
ISSN: 0378-1119Keywords: Escherichia coli ; Haemophilus influenzae ; overexpression ; recombinant DNA ; retroregulator stem-loop ; tac promoterSource: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: BiologyType of Medium: Electronic ResourceURL: -
9Articles: DFG German National LicensesStaff View
ISSN: 0899-8256Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: MathematicsEconomicsType of Medium: Electronic ResourceURL: -
10Articles: DFG German National LicensesStaff View
ISSN: 0038-1098Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: PhysicsType of Medium: Electronic ResourceURL: -
11Articles: DFG German National LicensesStaff View
ISSN: 0038-1098Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: PhysicsType of Medium: Electronic ResourceURL: -
12Articles: DFG German National LicensesStaff View
ISSN: 0022-5193Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: BiologyType of Medium: Electronic ResourceURL: -
13Articles: DFG German National LicensesStaff View
ISSN: 0038-1098Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: PhysicsType of Medium: Electronic ResourceURL: -
14Articles: DFG German National LicensesStaff View
ISSN: 0038-1098Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: PhysicsType of Medium: Electronic ResourceURL: -
15Articles: DFG German National LicensesStaff View
ISSN: 1573-4811Source: Springer Online Journal Archives 1860-2000Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision MechanicsType of Medium: Electronic ResourceURL: -
16Articles: DFG German National LicensesStaff View
ISSN: 1573-4803Source: Springer Online Journal Archives 1860-2000Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision MechanicsNotes: Abstract The influence of a 3 wt% Re addition on the creep strength and microstructure of a mechanically alloyed and oxide dispersion-strengthened nickel-base superalloy was investigated. Two alloys, Ni–8Cr–6.5Al–6W–3Ta–1.5Mo–6Co–1Ti–3Re–0.15Zr–0.05C–0.01B–0.9Y2O3 (3Re alloy) and a non-rhenium containing (0Re) alloy were prepared for this study. The 3Re alloy showed two-fold improvement in creep life compared with that of 0Re alloy, presumably due to a change in the mode of the precipitate-dislocation interaction. For the 3Re alloy, finer, more cuboidal and aligned γ′ precipitates are formed, which force the mobile dislocations at the γ–γ′ interfaces to cut precipitates in order to proceed. Shearing of precipitates is evinced by the existence of stacking faults and results in an increase of creep strength. In constrast, lower creep strength was observed for 0Re alloy because a dislocation looping mode is dominant with coarser and more irregularly shaped γ′ precipitates present in this alloy. Another possible explanation for an improved creep strength of 3Re alloy is related to the tangled dislocation structure formed by the interaction between glide dislocation and interfacial dislocation, which also acts as an effective barrier for further glide dislocation motion. A 3 wt% Re addition significantly retards γ′ coarsening kinetics. Rhenium acts as a rate-controlling species upon the volume diffusion-controlled coarsening process because it is a heavy elemenet and also it almost solely partitions to the γ matrix. X-ray diffraction experiments showed that the magnitude of the lattice mismatch between γ and γ′ increased with the 3 wt% Re addition from 0% to −0.26% at room temperature. Increased lattice mismatch for 3Re alloy causes the formation of more aligned and cuboidal γ′ precipitates rather than random and odd-shaped γ′ precipitates for 0Re alloy, and it also accelerates the coalescence between cuboidal γ′ precipitates.Type of Medium: Electronic ResourceURL: -
17Articles: DFG German National LicensesStaff View
ISSN: 1573-4811Source: Springer Online Journal Archives 1860-2000Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision MechanicsType of Medium: Electronic ResourceURL: -
18Articles: DFG German National LicensesStaff View
ISSN: 1573-4803Source: Springer Online Journal Archives 1860-2000Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision MechanicsNotes: Abstract The nickel-base eutectic alloy (Ni-10Cr-5Al-5Cr-8. 3Hf-1. 1Zr-0.7C, NASA HAFNIC-10) was directionally solidified to produce aligned refractory monocarbides in a nickel-rich matrix. The aligned carbides, (Hf, Zr) C, were present as rod- and ribbontypes, with a volume loading of about 8%. A blocky type of Ni3Al (γ′) precipitate, about 45% volume loading, was produced in the nickel-base matrix. The growth direction of both aligned carbide and matrix was parallel to 〈1 0 0〉. The effect of thermal cycling between 425 and 1100° C using a 2.5 min cycle time was examined. No microstructural degradation of the aligned carbide fibres occurred after 2000 cycles.Type of Medium: Electronic ResourceURL: