A5100607689- Advancements in Solid Oxide Fuel Cells
- Advanced Optical Sensing Technologies
- Fuel Cells and Related Materials
- Pelvic floor disorders treatments
- CCD and CMOS Imaging Sensors
- Urinary Bladder and Prostate Research
- Mobile Agent-Based Network Management
- Japanese History and Culture
- Service-Oriented Architecture and Web Services
- Ionosphere and magnetosphere dynamics
- Electrocatalysts for Energy Conversion
- Context-Aware Activity Recognition Systems
- Ocular and Laser Science Research
- Electronic and Structural Properties of Oxides
- Cholangiocarcinoma and Gallbladder Cancer Studies
- Anorectal Disease Treatments and Outcomes
- Chalcogenide Semiconductor Thin Films
- GaN-based semiconductor devices and materials
- Analytical Chemistry and Sensors
- Semiconductor materials and devices
- Insurance, Mortality, Demography, Risk Management
- Urinary Tract Infections Management
- Ga2O3 and related materials
- Epigenetics and DNA Methylation
- Biosimilars and Bioanalytical Methods
Sungkyunkwan University
2016-2025
IMEC
2024
Samsung Medical Center
2018-2019
Pusan National University
2015
Pusan National University Hospital
2015
Seoul National University
2007-2013
Cheorwon Plasma Research Institute
2013
Korea Photonics Technology Institute
2013
New Generation University College
2007
Proton conducting electrochemical cells, especially protonic ceramic fuel cells (PCFCs), are expected to be a breakthrough technology in next-generation energy conversion systems, primarily because of their high proton conductivity and low activation below 600 °C.
Direct methane protonic ceramic fuel cells are promising electrochemical devices that address the technical and economic challenges of conventional cells. However, Ni, a catalyst exhibits sluggish reaction kinetics for CH4 conversion low tolerance against carbon-coking, limiting its wider applications. Herein, we introduce self-assembled Ni-Rh bimetallic significantly high carbon-coking tolerance. It enables direct to operate with maximum power density ~0.50 W·cm-2 at 500 °C, surpassing all...
Abstract The low‐temperature (<500 °C) operation of reversible protonic ceramic electrochemical cells (PCECs) is desirable in achieving efficient and sustainable electricity generation, as well green hydrogen production. However, significant interfacial resistance, which contributes to both ohmic polarization remains a hurdle lowering the operating temperature. In this study, PrBa 0.5 Sr Co 1.5 Fe O 5+δ (PBSCF) BaZr 0.4 Ce Y 0.1 Yb 3‐δ (BZCYYb) mono‐grain composite interlayers are...
Focal CpG island hypermethylation and diffuse genomic hypomethylation signify the changes in DNA methylation status cancer cells. ALU LINE-1 repetitive elements comprise ~28% of human genome. PCR-based measurements these can be used as a surrogate marker genomewide content. Our study aimed to identify timing hypomethylations during multistep gastric carcinogenesis their prognostic implications (GC). In our study, we analyzed statuses 249 cases biopsy samples another independent set 198...
The current L1 Legacy SBAS provides satellite orbit and clock corrections, as well ionospheric delay for single-frequency users. Although Dual-Frequency Multi-Constellation (DFMC) SBAS, which augments multi-constellation GNSS using the L5 signal, has recently been standardized, number of receivers supporting is lower than that those L2, both significantly smaller L2 (European Global Navigation Satellite Systems Agency 2018). This study proposes a method enables users dual-frequency to...
This article presents a 320 × 240 indirect time-of-flight (iToF) CMOS image sensor (CIS) with on-chip motion artifact suppression and background light cancelling (BGLC). The proposed iToF CIS uses backside-illuminated trident pinned photodiode (PPD) that assists charge transfer built-in lateral electric field for enhanced depth accuracy. To overcome the limitation of conventional exhibits artifact, we propose pseudo-four-tap (P4-tap) demodulation method alternate phase driving using two-tap...
Abstract Sluggish oxygen reduction reaction (ORR) kinetics are a major obstacle to developing intermediate-temperature solid-oxide fuel cells (IT-SOFCs). In particular, engineering the anion defect concentration at an interface between cathode and electrolyte is important for facilitating ORR hence improving electrochemical performance. We developed yttria-stabilized zirconia (YSZ) nanofiber (NF)-based composite cathode, where vacancy controlled by varying dopant cation (Y 2 O 3 ) ratio in...
Objective To investigate the prevalence, risk factors of overactive bladder (OAB) and affecting severity OAB symptoms. Methods A total 822 interviews with women aged 18-80 years who visited public health centers were conducted between April 2014 2015. The questionnaire was composed 16 questions about urinary symptoms, 14 self-treatment use complementary alternative medicine, 21 socio-demographic characteristics. diagnostic criterion for is a symptom score 3 more, an urgency 2 or more. know...
An indirect time-of-flight (iToF) CMOS image sensor (CIS) is a device that provides depth as well two-dimensional shape of an object by measuring the phase difference reflected pulse trains light. Because iToF CIS offers high spatial resolution from scaled photodetectors such pinned photodiodes (PPD) [1] or photogates [2], accuracy, it advantageous for gesture recognition with higher accuracy compared conventional 2D imagers. Even though CISs have been limited to indoor applications, gaming,...
We present a low-power indirect time-of-flight (iTOF) image sensor with fixed depth noise compensation and dual-mode imaging for dynamic range (DDR) enhancement. To reduce the power consumption from high-frequency pixel modulation, TX driver single-sided clock chain is employed in sensor. The inherent phase delay of row bus are measured using row-parallel column-parallel time-to-digital converters (TDCs) to compensate column (FDN). achieve wide (WDDR), reconfigurable pixels circuits support...
Achieving proper rotational alignment of the femoral component in total knee arthroplasty (TKA) for valgus is challenging because lateral condylar hypoplasia and cartilage erosion. Gap-based navigation-assisted TKA enables surgeons to determine angle rotation (FCR) based on posterior axis. This study evaluated possible factors that affect axis.Between 2008 2016, 28 knees were enrolled. The dependent variable this was FCR axis, which obtained from navigation system archives. Multiple...
To find out the factors affecting medication discontinuation in patients with overactive bladder (OAB) symptoms.The clinical data of 125 OAB symptoms who had taken antimuscarinics and behavioral therapy were retrospectively reviewed. Antimuscarinics related outcomes evaluated by an independent observer telephone interview. All asked about duration reason continuation or antimuscarinics. determine pre-treatment predicting self-report antimuscarinics, variables only those P-values <0.25 on...