A5012567841- Ionosphere and magnetosphere dynamics
- Atmospheric Ozone and Climate
- Climate variability and models
- Geophysics and Gravity Measurements
- Meteorological Phenomena and Simulations
- biodegradable polymer synthesis and properties
- Insect and Pesticide Research
- Plant and animal studies
- Atmospheric and Environmental Gas Dynamics
- Ecology and Conservation Studies
- Nanoparticle-Based Drug Delivery
- Insect and Arachnid Ecology and Behavior
- Advancements in Photolithography Techniques
- Oceanographic and Atmospheric Processes
- Solar and Space Plasma Dynamics
- Carbon dioxide utilization in catalysis
- Tropical and Extratropical Cyclones Research
- Physics of Superconductivity and Magnetism
- Agriculture, Soil, Plant Science
- Polymer Surface Interaction Studies
- Ocean Waves and Remote Sensing
- Seismic Waves and Analysis
- Bone Tissue Engineering Materials
- Nanoplatforms for cancer theranostics
- Electrospun Nanofibers in Biomedical Applications
Seoul National University
1993-2025
Goethe University Frankfurt
2018-2024
Ewha Womans University
2016-2020
Samsung (South Korea)
2004-2017
Yonsei University
2006-2016
Animal and Plant Quarantine Agency
2013-2016
Hallym University
2016
Keimyung University
2016
Jeonbuk National University
2012-2015
Gwangju Institute of Science and Technology
2005-2014
We developed a very effective hyperthermia system for successful photothermal cancer therapy. Instead of applying individual gold nanorods (GNRs) that can absorb NIR light, GNRs were loaded into functional nanocarriers could provide stable storage and selective delivery to target tumor site. The (chitosan-conjugated, Pluronic-based nanocarriers) prepared by chemically cross-linking Pluronic F 68 with chitosan conjugation form flexible, soft, excellent reservoir biomacromolecules as well...
Abstract L ‐Lactide was polymerized with stannous 2‐ethylhexanoate (stannous octoate) in the presence of pentaerythritol to investigate multifunctional initiation. The prepared oligomers contain starshaped 4‐arm molecules when mole ratio [lactide]/[pentaerythritol] is above 32. molecular weight coincides ratio, indicating that conjugation octoate an initiator for “living” polymerization L‐lactide.
Abstract Quasi‐biennial oscillations (QBOs) in thirteen atmospheric general circulation models forced with both observed and annually repeating sea surface temperatures (SSTs) are evaluated. In most the QBO period is close to, but shorter than, of 28 months. Amplitudes within ±20 % amplitude at 10 hPa, typically about half that lower altitudes (50 70 hPa). For almost all models, oscillation's profile shows an overall upward shift compared to reanalysis its meridional extent too narrow....
Abstract. The Stratosphere–troposphere Processes And their Role in Climate (SPARC) Quasi-Biennial Oscillation initiative (QBOi) aims to improve the fidelity of tropical stratospheric variability general circulation and Earth system models by conducting coordinated numerical experiments analysis. In equatorial stratosphere, QBO is most conspicuous mode variability. Five have therefore been designed (i) evaluate compare verisimilitude modelled QBOs under present-day conditions, (ii) identify...
Three kinds of OH-terminated polylactides were synthesized by the ring-opening polymerization lactide, with an alcohol such as dodecanol, glycerol, or pentaerythritol, in presence stannous octoate. Moreover, Cl-, NH2-, and COOH-terminated from polylactides. The end groups identified 1H NMR 13C NMR. According to thermal analysis, cold crystallization temperatures higher than those stability was poor, whereas NH2- Cl-terminated more resistant degradation. In a hydrolysis degradation test, mass...
Abstract We analyze the stratospheric waves in models participating phase 1 of Stratosphere–troposphere Processes And their Role Climate (SPARC) Quasi‐Biennial Oscillation initiative (QBOi). All have robust Kelvin and mixed Rossby‐gravity wave modes winds temperatures at 50 hPa represent them better than most Coupled Model Intercomparison Project Phase 5 (CMIP5) models. There is still some spread among models, especially concerning waves. attribute variability equatorial QBOi part to varying...
Abstract The Quasi‐biennial Oscillation (QBO) dominates the interannual variability of tropical stratosphere and influences other regions atmosphere. high predictability QBO implies that its teleconnections could lead to increased skill seasonal decadal forecasts provided relevant mechanisms are accurately represented in models. Here modelling sampling uncertainties examined using a multi‐model ensemble QBO‐resolving atmospheric general circulation models have carried out set coordinated...
Abstract Convectively generated gravity waves (CGGWs) are important for numerical weather prediction due to their effect on the quasi‐biennial oscillation (QBO) in stratosphere. Using global ECMWF IFS simulations at TCo7999 (or 1.25 km), TCo2559 3.9 km) and TCo1279 7.8 horizontal resolutions, sensitivity of resolved CGGWs resolution explicit versus parametrized representation deep convection is elucidated during westerly shear phase QBO. Parametrized found inhibit CGGWs, resulting a twofold...
Abstract. In climate modelling, the reality of simulated flows in middle atmosphere is largely affected by model's representation gravity wave processes that are unresolved, while these usually simplified to facilitate computations. The simplification commonly applied existing models neglect propagation horizontal direction and time. Here we use a model fully represents unresolved waves all directions, thereby elucidating its dynamical effect upon most important mode tropical...
Adsorption of proteins (fibrinogen, albumin, and gamma globulin) from plasma onto surface-modified PUs (PU-PEO, PU-SO3, PU-PEO-SO3) was evaluated. Adsorbed fibrinogen at steady state decreased in the order PU-SO3 > PU PU-PEO-SO3 PU-PEO, suggesting that sulfonate groups have specific high affinity to fibrinogen. The intermediate adsorption on can be explained by compensatory effect between low protein binding PEO chain group. In addition, showed a very fast due accessibility group...
Abstract The ring‐opening polymerization of L‐lactide with stannous octoate was investigated in the presence pentaerythritol. By this way it possible to prepare higher molecular weight star‐shaped poly( L ‐lactide)s compared linear ones obtained by only. weight‐average weights and star were measured light scattering analysis from hexafluoro‐2‐propanol solution, respective Mark‐Houwink equations derived. second virial coefficient intrinsic viscosity polymers lower than those ones, which...
A convective gravity‐wave parameterization (GWP) is introduced in the Met Office Unified Model (MetUM) addition to existing GWPs, and tropical quasi‐biennial oscillation (QBO) simulated. We replace a significant amount of momentum flux, which originally launched by background GWP, with (CGW) flux broad wave spectrum that explicitly determined sources. Compared experiment without CGW parameterization, including results greater variability duration each phase QBO, closer observed. Including...
Abstract The Quasi‐Biennial Oscillation initiative (QBOi) is a model intercomparison programme that specifically targets simulation of the QBO in current global climate models. Eleven models or versions participated QBOi study have upper boundaries above mesosphere and therefore simulate region where stratopause semiannual oscillation (SAO) dominant mode variability zonal winds tropical stratosphere. Comparisons SAO simulations these are presented here. These show amplitudes phases...
Abstract A multi‐model study is carried out to investigate the ability of models predict evolution quasi‐biennial oscillation (QBO) up 12 months in advance. All are initialised from common reanalysis data, and forecasts run for a set 30 start dates over 15 years. have high skill predicting phase QBO at 20–30 hPa, with slightly more variable results higher lower levels. Other aspects predicted quality, some cases consistently poor. easterlies too weak all 20–50 while westerlies can be either...
Covers advancements in spacecraft and tactical strategic missile systems, including subsystem design application, mission analysis, materials structures, developments space sciences, processing manufacturing, operations, applications of technologies to other fields.
A novel ultra-wideband (UWB) tapered slot antenna (TSA) is proposed that has both enhanced impedance bandwidth enough to cover UWB systems and band cutoff characteristic of 5 GHz WLAN limited by IEEE802.11a HIPERLAN/2. To achieve these two characteristics wide partial at the TSA, a broadband microstrip–slotline transition with multi-arm stubs λ/4 short stubs, respectively, used. From measured results, it observed about 2 octaves from 2.8 11.09 for VSWR<2 achieved, while 5.05–5.93 radiated...
MicroRNAs (miRNAs) are small, noncoding RNA molecules that control expression of target genes. The abnormally expressed miRNAs function as oncogenes or tumor suppressors in human cancer. To evaluate the abundant gene regulation miR-221 papillary thyroid carcinoma (PTC), we performed microarray analysis and developed a <i>Gaussia</i> luciferase (Gluc) reporter system regulated by miR-221. <b>Methods:</b> Total RNAs were isolated from pre-miR-221–treated normal cells (HT-ori3)...
Abstract. Convective gravity wave (GW) sources are spatially localized and emit at the same time waves with a wide spectrum of phase speeds. Any analysis therefore compromises between spectral spatial resolution. Future satellite borne limb imagers will for first provide real 3-D volumes observations. These be however limited which impose further constraints on technique. In this study three dimensional few-wave approach fitting sinusoidal to is introduced. The method applied simulated GWs...