Search Results - (Author, Cooperation:S. H. Kang)
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1Lyu, Y. R., Yang, W.-K., Park, S. J., Kim, S.-H., Kang, W.-C., Jung, I. C., Park, Y. C.
BMJ Publishing
Published 2018Staff ViewPublication Date: 2018-05-16Publisher: BMJ PublishingElectronic ISSN: 2044-6055Topics: MedicineKeywords: Open access, Respiratory medicinePublished by: -
2T. S. Wong ; S. H. Kang ; S. K. Tang ; E. J. Smythe ; B. D. Hatton ; A. Grinthal ; J. Aizenberg
Nature Publishing Group (NPG)
Published 2011Staff ViewPublication Date: 2011-09-23Publisher: Nature Publishing Group (NPG)Print ISSN: 0028-0836Electronic ISSN: 1476-4687Topics: BiologyChemistry and PharmacologyMedicineNatural Sciences in GeneralPhysicsKeywords: Angiosperms/anatomy & histology/*chemistry ; Animals ; Ants/physiology ; Biomimetic Materials/*chemistry ; Blood ; Hydrocarbons/chemistry ; Ice ; Lotus/anatomy & histology/chemistry ; Lubricants/*chemistry/pharmacology ; Lubrication ; Nanostructures ; Petroleum ; Porosity ; *Pressure ; *Surface Properties/drug effects ; Water/chemistry ; *WettabilityPublished by: -
3A K Hussain, K Q Lee, L M Aung, A Abu, L K Tan and H S Kang
Institute of Physics (IOP)
Published 2018Staff ViewPublication Date: 2018-01-30Publisher: Institute of Physics (IOP)Print ISSN: 1757-8981Electronic ISSN: 1757-899XTopics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision MechanicsPublished by: -
4C H Gao, Y L Kang, S H Miao, Z W Liu, Z H Fan, Y L Liu, W M Liu, T T Zheng and M M Zhang
Institute of Physics (IOP)
Published 2018Staff ViewPublication Date: 2018-10-31Publisher: Institute of Physics (IOP)Print ISSN: 1755-1307Electronic ISSN: 1755-1315Topics: GeographyGeosciencesPhysicsPublished by: -
5Watanabe, Yoshimi ; Kang, S. H. ; Chan, J. W. ; Morris, J. W.
[S.l.] : American Institute of Physics (AIP)
Published 2001Staff ViewISSN: 1089-7550Source: AIP Digital ArchiveTopics: PhysicsNotes: Superconducting quantum interference device (SQUID) microscopes may serve as useful nondestructive evaluation (NDE) tools since they can precisely measure the local magnetic field variation that can be related to the characteristics of ferromagnetic materials. To demonstrate this, we have studied magnetic functionally graded materials (FGMs) in the Fe–Cr–Ni alloy system using a high-transition-temperature (HTc) SQUID microscope. The FGMs were either fabricated by inhomogeneous mechanical deformation or by heat treatment in a temperature gradient. The magnetic properties of these materials were measured using the vibrating sample magnetometer technique along the deformation or the temperature gradients. The results from this technique and the microstructural properties from optical imaging are discussed in conjunction with the magnetic field images obtained from the SQUID microscope. By exploring the results, the feasibility and benefit of utilizing SQUID microscopy as a NDE tool are discussed. © 2001 American Institute of Physics.Type of Medium: Electronic ResourceURL: -
6Kang, S. H. ; Kim, C. ; Morris, J. W. ; Génin, F. Y.
[S.l.] : American Institute of Physics (AIP)
Published 1996Staff ViewISSN: 1089-7550Source: AIP Digital ArchiveTopics: PhysicsNotes: The possibility is addressed of improving the electromigration resistance of Al and Al–Cu thin-film conductors with "quasi-bamboo'' structures by post-pattern anneals that decrease the maximum polygranular segment length. Pure Al, Al–2Cu, and Al–2Cu–1Si lines were patterned and annealed at temperatures high enough to stimulate grain growth. Appropriate anneals led to predominantly bamboo structures with short polygranular segments. These grain structures had a high median time to failure with a relatively low deviation of the time to failure. Metallographic analyses showed that polygranular segment length was a dominant factor in determining the failure site. Post-pattern annealing promotes a preferential shortening of the relatively long polygranular segments that cause early failures. However, even after annealing, failure occurred at the longest residual polygranular segments, even when these were significantly shorter than the "Blech length'' under the test conditions. Statistical analysis of the failure of alloy lines revealed a simple exponential relation between the failure time and the longest polygranular segment length within a line, which is functionally identical to that previously found for lines tested in the as-patterned condition.Type of Medium: Electronic ResourceURL: -
7Seo, S.-Y. ; Lee, I.-S. ; Shin, H.-Y. ; Choi, K.-Y. ; Kang, S.-H. ; Ahn, H.-J.
Dordrecht, The Netherlands : Blackwell Science Ltd
Published 1999Staff ViewISSN: 1468-2494Source: Blackwell Publishing Journal Backfiles 1879-2005Topics: MedicineNotes: The relationship between the wax matrix in lipstick and sweating has been investigated by observing the change of size and shape of the wax matrix due to sweating by Scanning Electron Microscopy (SEM). For observation by SEM, a lipstick sample was frozen in liquid nitrogen. The oil in the lipstick was then extracted in cold isopropanol (−70 °C) for 1–3 days. After the isopropanol was evaporated, the sample was sputtered with gold and examined by SEM. The change of wax matrix underneath the surface from fine, uniform structure to coarse, nonuniform structure resulted from the caking of surrounding wax matrix. The oil underneath the surface migrated to the surface of lipstick with sweating; consequently the wax matrix in that region was rearranged into the coarse matrix. In case of flamed lipstick, sweating was delayed and the wax matrix was much coarser than that of the unflamed one. The larger wax matrix at the surface region was good for including oil. The effect of molding temperature on sweating was also studied. As the molding temperature rose, sweating was greatly reduced and the size of the wax matrix increased. It was found that sweating was influenced by the compatibility of wax and oil. A formula consisting of wax and oil that have good compatibility has a tendency to reduce sweating and increase the size of the wax matrix. When pigments were added to wax and oil, the size of the wax matrix was changed, but in all cases sweating was increased due to the weakening of the binding force between wax and oil. On observing the thick membrane of wax at the surface of lipstick a month after molding it was also found that sweating was influenced by ageing. In conclusion, the structure of the wax matrix at the surface region of lipstick was changed with the process of flaming, molding temperature, compatibility of wax and oil, addition of pigment, and ageing. In most cases, as the size of the wax matrix was increased, sweating was reduced and delayed.Type of Medium: Electronic ResourceURL: -
8Kang, B. S. ; Park, B. H. ; Bu, S. D. ; Kang, S. H. ; Noh, T. W.
Woodbury, NY : American Institute of Physics (AIP)
Published 1999Staff ViewISSN: 1077-3118Source: AIP Digital ArchiveTopics: PhysicsNotes: To investigate the role of the perovskite layers on fatigue behaviors, SrBi2Ta2O9(SBT) and Bi3TiTaO9 (BTT) films were prepared by pulsed laser deposition using 15% Bi-excess bulk targets. The SBT and the BTT films grown at the similar deposition conditions showed similar growth behaviors, electrical properties, and retention characteristics. However, these films showed very different fatigue behaviors. The difference should come from the oxygen stability in the perovskite layer. Our work demonstrates that oxygen stability of the perovskite layers, as well as the self-regulating adjustment of the Bi2O2 layers, should be considered in the search for new candidate materials for nonvolatile ferroelectric memory devices. © 1999 American Institute of Physics.Type of Medium: Electronic ResourceURL: -
9Bu, S. D. ; Park, B. H. ; Kang, B. S. ; Kang, S. H. ; Noh, T. W.
Woodbury, NY : American Institute of Physics (AIP)
Published 1999Staff ViewISSN: 1077-3118Source: AIP Digital ArchiveTopics: PhysicsNotes: Polycrystalline SrBi2Ta2O9 ferroelectric thin films were grown on Pt/Ti/SiO2/Si substrates using pulsed-laser deposition. By adjusting the laser fluence, we could successfully control remnant polarization of the films. In a narrow fluence range of 1.0–1.5 J/cm2, films with large remnant polarizations (as high as 18.7 μC/cm2) could be obtained. The choice of an optimal laser fluence was found to be very important to control electrical properties of the films. From electron-probe microanalysis, it was demonstrated that the Bi content is closely related with the remnant polarization. © 1999 American Institute of Physics.Type of Medium: Electronic ResourceURL: -
10Staff View
ISSN: 1089-7550Source: AIP Digital ArchiveTopics: PhysicsNotes: This work reports a statistical analysis of the evolution of polygranular segment lengths during high-temperature annealing of Al(Cu) thin-film interconnects with quasi-bamboo microstructures. To create samples of Al(Cu) lines that could be imaged by transmission electron microscopy without breaking or thinning, the lines were deposited on electron-transparent silicon nitride films (the "silicon nitride window" technique). The microstructures of the lines were studied as a function of annealing time and temperature. In particular, the distribution of polygranular segment lengths was measured. The results show that the longer polyglranular segments are preferentially eliminated during post-pattern annealing. As a consequence, the segment-length distribution narrows monotonically during annealing, and changes in shape. The preferential loss of the longest polygranular segments leads to a dramatic increase in resistance to electromigration failure.Type of Medium: Electronic ResourceURL: -
11Staff View
ISSN: 0005-2744Keywords: (D. melanogaster) ; Chymotrypsin ; Protease inhibitorSource: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: BiologyType of Medium: Electronic ResourceURL: -
12Staff View
ISSN: 0003-2697Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: BiologyChemistry and PharmacologyType of Medium: Electronic ResourceURL: -
13Staff View
ISSN: 0020-1790Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: BiologyType of Medium: Electronic ResourceURL: -
14Staff View
ISSN: 0021-9614Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: Chemistry and PharmacologyPhysicsType of Medium: Electronic ResourceURL: -
15Staff View
ISSN: 0020-1790Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: BiologyType of Medium: Electronic ResourceURL: -
16Staff View
ISSN: 0021-9614Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: Chemistry and PharmacologyPhysicsType of Medium: Electronic ResourceURL: -
17Peng, X.-G. ; Gao, M.-L. ; Zhao, Y.-Y. ; Kang, S.-H. ; Zhang, Y.-H. ; Zhang, Y. ; Wang, D.-J. ; Xiao, L.-Z. ; Chen, H.-Y. ; Li, T.-J.
Amsterdam : ElsevierStaff ViewISSN: 0009-2614Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: Chemistry and PharmacologyPhysicsType of Medium: Electronic ResourceURL: -
18Staff View
ISSN: 0305-0491Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: BiologyChemistry and PharmacologyType of Medium: Electronic ResourceURL: -
19Staff View
ISSN: 0165-4101Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: EconomicsType of Medium: Electronic ResourceURL: -
20Staff View
ISSN: 1359-5997Source: Springer Online Journal Archives 1860-2000Topics: Architecture, Civil Engineering, SurveyingDescription / Table of Contents: Resume Il existe plusieurs méthodes de détermination du dosage d'un béton quand la résistance à la compression est prise comme critère de calcul; toutefois, on dispose de nettement moins de données quand il s'agit d'autres critères, tels l'énergie de rupture ou le module d'élasticité. Pour ces derniers cas, on a développé un nouveau nomogramme de formulation à partir des relations connues du béton. L'application de cette méthode est démontrée par un programme expérimental qui montre l'influence de la teneur en ciment, des rapports eau/ciment et granulat/ciment sur la résistance à la compression, le module d'élasticité et la résistance à la traction par fendage, l'énergie de rupture et la longueur caractéristique du béton. On a étudié six mélanges de béton présentant des rapports eau/ciment et une ouvrabilité différents. Outre qu'il est un outil pour le praticien, le nomogramme de formulation peut aussi aider le chercheur à sélectionner les paramètres de dosage les mieux appropriés à des buts expérimentaux et scientifiques. On remarque que certaines contraintes devraient être observées quand on étudie l'effect des paramètres de dosage sur les propriétés du béton.Notes: Abstract There are many methods for determining a concrete mix proportion when the compressive strength is the design criterion; however, there is much less information available when other criteria, such as the fracture energy or the elastic modulus, are specified. For these cases, a new mix design nomogram has been developed from well-established concrete relationships. The application of this method is demonstrated by an experimental programme which shows the influence of cement content, water-to-cement ratio and aggregate-to-cement ratio on the compressive strength, modulus of elasticity, spliting tensile strength, fracture energy, and characteristic length of concrete. Six concrete mixtures with different water-to-cement ratios and workabilities were studied. The mix design nomogram, besides being a tool for the practitioner, can also help the researcher in selecting the most adequate mix parameters for experimental and scientific purposes. It is noted that when studying the effect of mix parameters on the properties of concrete certain constraints should be used: for instance when varying the water-to-cement ratio, the workability of fresh concrete should be kept constant and vice versa.Type of Medium: Electronic ResourceURL: