A5020460471- Advancements in Battery Materials
- Extraction and Separation Processes
- Advanced Battery Materials and Technologies
- Protein Kinase Regulation and GTPase Signaling
- Fatigue and fracture mechanics
- Endoplasmic Reticulum Stress and Disease
- Advanced Sensor and Energy Harvesting Materials
- Photonic and Optical Devices
- Ferroelectric and Piezoelectric Materials
- Dielectric materials and actuators
- Electrocatalysts for Energy Conversion
- Advanced Memory and Neural Computing
- Sphingolipid Metabolism and Signaling
- Semiconductor materials and devices
- Fuel Cells and Related Materials
- Electron and X-Ray Spectroscopy Techniques
- Ultrasonics and Acoustic Wave Propagation
- Ubiquitin and proteasome pathways
- High voltage insulation and dielectric phenomena
- Nonlinear Optical Materials Research
- Advanced Battery Technologies Research
- Vacuum and Plasma Arcs
- Plant-derived Lignans Synthesis and Bioactivity
- Membrane-based Ion Separation Techniques
- Electronic and Structural Properties of Oxides
Pusan National University
2024
Seoul National University
2020-2023
Kyungpook National University
2004-2023
Korea Institute of Science and Technology
2020
Sungkyunkwan University
2010-2019
Friedrich Miescher Institute
1995-1996
Treatment of quiescent Swiss 3T3 fibroblasts with serum, or the phosphatase inhibitors okadaic acid and vanadate, induced a 2- to 11-fold activation serine/ threonine RAC protein kinase (RAC-PK). Kinase was accompanied by decreased mobility RAC-PK on SDS/PAGE such that three electrophoretic species (a c) were detected immunoblot analysis, indicative differentially phosphorylated forms. Addition vanadate arrested cells increased phosphorylation level 3-to 4-fold. Unstimulated predominantly...
During solid-state calcination, with increasing temperature, materials undergo complex phase transitions heterogeneous reactions and mass transport. Precise control of the calcination chemistry is therefore crucial for synthesizing state-of-the-art Ni-rich layered oxides (LiNi1-x-y Cox Mny O2 , NRNCM) as cathode lithium-ion batteries. Although battery performance depends on chemical heterogeneity during NRNCM it has not yet been elucidated. Herein, through synchrotron-based X-ray,...
Stabilised Li-rich and Li-poor surface domains formed during fast lithiation delithiation, respectively, cause a large overpotential difference between discharging charging.
Menin, encoded by the multiple endocrine neoplasia type 1 ( MEN1 ) gene, is a tumor suppressor that leads to tumors upon loss of its function. Menin functions as transcriptional activator tethering MLL complex mediate histone H3 K4 methylation. It also repressor. However, molecular mechanism how menin contributes opposite outcome in gene expression largely unknown. Here, we investigated role epigenetic regulation transcription mediated covalent modification. We show global methylation level...
Elucidating high-rate cycling-induced nonequilibrium electrode reactions is crucial for developing extreme fast charging (XFC) batteries. Herein, we unveiled the distinct rate capabilities of a series Ni-rich layered oxide (NRLO) cathodes by quantitatively establishing their dynamic structure–kinetics relationships. Contrary to conventional views, discovered kinetic properties obtained ex-situ near equilibrium states failed assess effective capability NRLOs at ultrafast C rates. Further,...
Abstract Light element identification is necessary in materials research to obtain detailed insight into various material properties. However, reported techniques, such as scanning transmission electron microscopy (STEM)-energy dispersive X-ray spectroscopy (EDS) have inadequate detection limits, which impairs identification. In this study, we achieved light with nanoscale spatial resolution a multi-component metal alloy through unsupervised machine learning algorithms of singular value...
Abstract Ni‐rich layered oxides (NRLO) are widely considered among the most promising cathode materials for high energy‐density lithium ion batteries. However, proportion of Ni content accelerates cycling degradation that restricts their large‐scale applications. The origins indeed heterogeneous and thus there tremendous efforts devoted to understanding underlying mechanisms at multi‐length scales spanning atom/lattice, particle, porous electrode, solid‐electrolyte interface, cell levels...
The itinerant strong sustain discharge that occurs during a period over few minutes causes image sticking, which means ghost remains in the subsequent when previous was continuously displayed minutes. Accordingly, this paper investigates whether dominant factor sticking is MgO surface or phosphor layer by testing effects of dark and bright images using 42-in plasma display panel. When dark, found to produce brighter than background. Thus, since luminance produced weak reset-period, higher...
S-band deflectors are generally operated on pulsed mode for beam diagnosis. We plan to deploy 5 (2997 MHz) accurately measure the longitudinal time distribution of ultra-short electron pulses in Shenzhen Superconducting Soft X-ray Free Electron Laser (S3FEL). A microwave system one deflector consists a low-level RF (LLRF), solid-state amplifier, waveguide couplers, and klystron, pulse with maximum repetition frequency 50 Hz. Its amplitude phase stability must be better than 0.06%/0.08{\deg}...
In FEL (Free-Electron Laser) accelerators, LLRF (Low-Level Radiofrequency) systems usually deploy feedback or feedforward algorithms requiring precise microwave measurement. The slow drift of the clock allocation network significantly impacts measured phase, thereby affecting stability closed-loop operation. reference tracking algorithm is used to eliminate measurement drift. conventional perform phase and amplitude demodulation on synchronous signal from main oscillator subtract in other...
The dispersion of titanium dioxide (TiO2) determines the performance TiO2-based formulations in cosmetic and coating applications. In particular, chemical structural characteristics surfactants used to prepare TiO2 dispersions are significant. However, influence on quality has not been systematically investigated. this study, we observed effects ionic character commercial stability UV-blocking efficacy TiO2. Among experimental surfactant groups, anionic sodium dodecyl sulfate was efficient...
Cathode Calcination In article number 2207076, Sugeun Jo, Keeyoung Jung, Jongwoo Lim, and co-workers show how solid-state reaction heterogeneity affects the high-temperature calcination of Li-ion battery particles. Various parallel serial combinations thermal (an)aerobic decomposition Li2–O insertion/diffusion are chemically imaged during reaction. The cover image features intermediates that facilitate surface incorporation, which is impeded by anaerobically decomposed phase in particle core.
The ceramic(<TEX>$BaTiO_3$</TEX>)-polymer(epoxy) composites have been widely investigated as dielectric materials for embedded capacitors in printed circuit boards (PCBs). properties of <TEX>$BaTiO_3$</TEX>/epoxy prepared using the agglomerated <TEX>$BaTiO_3$</TEX> particles were present study. constants about 2 times higher than those with dispersed particles. insulation resistance lower As a result, there is tradeoff between high constant and composites. So it important to select proper or...