A5101503441- Perovskite Materials and Applications
- Gastric Cancer Management and Outcomes
- Gastrointestinal disorders and treatments
- Colorectal Cancer Screening and Detection
- Electrocatalysts for Energy Conversion
- Gastrointestinal Bleeding Diagnosis and Treatment
- Conducting polymers and applications
- Gastrointestinal Tumor Research and Treatment
- Quantum Dots Synthesis And Properties
- Liver Disease Diagnosis and Treatment
- Nutrition and Health in Aging
- Eosinophilic Esophagitis
- Organic Light-Emitting Diodes Research
- Esophageal and GI Pathology
- Fuel Cells and Related Materials
- Helicobacter pylori-related gastroenterology studies
- Immunotherapy and Immune Responses
- Potassium and Related Disorders
- SARS-CoV-2 and COVID-19 Research
- Urinary Bladder and Prostate Research
- Semiconductor Quantum Structures and Devices
- Body Composition Measurement Techniques
- Pancreatic and Hepatic Oncology Research
- Gastrointestinal motility and disorders
- Mycobacterium research and diagnosis
Seoul Metropolitan Government
2015-2024
Boramae Medical Center
2015-2024
Seoul National University
2015-2024
Seoul National University Hospital
2016-2022
National University College
2022
New Generation University College
2022
Korea Disease Control and Prevention Agency
2021-2022
Ulsan National Institute of Science and Technology
2015-2021
Korea National Institute of Health
2021
Ludwig-Maximilians-Universität München
2020
Tuning the metal-support interaction of supported metal catalysts has been found to be most effective approach modulating electronic structure and improving catalytic performance. But practical understanding charge transfer mechanism at level catalysis process remained elusive. Here, it is reported that ruthenium (Ru) nanoparticles can self-accommodate into Fe3 O4 carbon support (Ru-Fe3 /C) through interaction, resulting in robust activity toward alkaline hydrogen evolution reaction (HER)....
A new catalyst, P-3G simultaneously exhibited outstanding multifunctional catalytic activities for the ORR, OER, and HER. The synergistic effects between perovskite oxides 3DNG was firstly proposed by DFT calculations.
This study investigated the clinical characteristics of drug-induced esophagitis
Abstract The electric conductivity‐dependence of the number electrons transferred during oxygen reduction reaction is presented. Intensive properties, such as transferred, are difficult to be considered conductivity‐dependent. Four different perovskite oxide catalysts conductivities were investigated with varying carbon contents. More conductive environments surrounding active sites, achieved by more (providing internal pathways) or higher content external pathways), resulted in toward...
The overpotentials of the oxygen reduction on perovskite oxide catalysts were significantly reduced simply by mixing catalyst particles with polypyrrole/carbon composites (pPy/C).
Abstract Control over the morphology and crystallinity of metal halide perovskite materials is key importance to enable high‐performance optoelectronics. Here, a simple yet effective template‐free self‐assembly synthesis granular wires with ultrahigh photodetectivity (3.17 × 10 15 Jones) reported. The 1D grains driven by differences in surface interaction energies facets. superb photodetecting performance originates from extremely low dark current engendered energetic barriers featuring...
Metal halide perovskites (MHPs) have attracted significant attention as light-emitting materials owing to their high color purities and tunabilities. A key issue in perovskite diodes (PeLEDs) is the fabrication of an optimal charge transport layer (CTL), which has desirable energy levels for efficient injection while blocking opposite charges enabling growth with reduced interfacial defects. Herein, two poly(fluorene-phenylene)-based anionic conjugated polyelectrolytes (CPEs) different...
Aims Metabolic syndrome (MetS) increases the risk of diabetes mellitus (DM), cardiovascular disease (CVD), cancer, and mortality. Sarcopenia has been reported as a factor for MetS, non-alcoholic fatty liver disease, CVD. To date, association between sarcopenia MetS investigated. However, there have few studies on dose-response relationship MetS. We investigated prevalence also aimed to analyze skeletal muscle mass Methods enrolled 13,620 participants from October 2014 December 2019. Skeletal...
Abstract The influence of body fat on arterial stiffness remains controversial. This study was performed to investigate the associations between four different types parameters and brachial-ankle pulse wave velocity (baPWV). A total 3758 subjects (mean age, 53.4 ± 8.8 years; females, 36.3%) who underwent health check-up were retrospectively analyzed. Anthropometric including mass index (BMI), waist circumference (WC) waist–hip ratio (WHR) assessed, visceral area (VFA) calculated by...
Abstract The development of high‐performance hole transport layer (HTL)‐free perovskite solar cells (PSCs) with a simplified device structure has been major goal in the commercialization PSCs due to economic advantage low manufacturing cost. Unfortunately, bandgap ( E g ) mixed Pb–Sn perovskites, which have promising utility for constructing efficient all‐perovskite tandem cells, rarely explored HTL‐free configurations. In this study, band bending and defect engineering at interface between...
A series of poly(fluorene-co-phenylene)-based anionic conjugated polyelectrolytes (CPEs) are prepared with varying sizes counterions (tetramethylammonium, tetraethylammonium, and tetrabutylammonium (TBA+)) studied as a hole-transporting layer (HTL) for sky-blue-emissive perovskite light-emitting diodes (PeLEDs). Ionic CPE HTLs improve the wettability, compatibility, nucleation crystals at interfaces, enabling highly crystalline crystal growth enhanced properties. By incorporating containing...
Monocyte extravasation into the vessel wall is a key step in atherogenesis. It still elusive how monocytes transmigrate through endothelial cell (EC) monolayer at atherosclerosis predilection sites. Platelets tethered to ultra-large von Willebrand factor (ULVWF) multimers deposited on luminal EC surface following CD40 ligand (CD154) stimulation may facilitate monocyte diapedesis. Human ECs grown parallel plate flow chamber for live-cell imaging or Transwell permeable supports transmigration...
Transition metal dichalcogenides (TMDs), due to their fascinating properties, have emerged as potential next-generation semiconducting nanomaterials across diverse fields of applications. When combined with other material systems, precise control the intrinsic properties TMDs plays a vital role in maximizing performance. Defect-induced atomic doping through introduction chalcogen vacancy into lattices is known be promising strategy for modulating characteristic properties. As result, there...
Artificial intelligence (AI), which has demonstrated outstanding achievements in image recognition, can be useful for the tedious capsule endoscopy (CE) reading. We aimed to develop a practical AI-based method that identify various types of lesions and tried evaluate effectiveness under clinical settings. A total 203,244 CE images were collected from multiple centers selected considering regional distribution. The AI based on Inception-Resnet-V2 model was trained with classified into two...
Correct differentiation between malignant and benign incidentally found cystic renal lesions has critical implications for patient management. In several studies contrast-enhanced ultrasound (CEUS) showed higher sensitivity with respect to the accurate characterization of these compared MRI, but cost-effectiveness CEUS yet be investigated. The aim this study was analyze as an alternative imaging method MRI lesions. A decision model including diagnostic modalities created based on Markov...
Background Two liters of polyethylene glycol (PEG) solution administered with ascorbic acid (Asc) can provide efficacy similar to that a 4-L PEG for colonoscopy preparation. In addition, oral bisacodyl (Bis) has been shown reduce the volume needed bowel preparation comparable efficacy. This study aimed compare efficacy, tolerability and safety 2-L mixed Asc versus combination Bis, 1-L solution. Methods was prospective, randomized, multi-centre, single-blind, non-inferiority trial....
BACKGROUND Gallbladder polyps (GBPs) are known to be associated with obesity and metabolic diseases. However, date, the relationship between GBPs abnormal body fat distribution, such as fatty liver, visceral obesity, or sarcopenia, has not yet been established. AIM To evaluate whether sarcopenia. METHODS We retrospectively reviewed medical records of subjects who underwent various laboratory tests, composition measurement a non-invasive analyzer, abdominal ultrasonography during health...
Aims Metabolic syndrome (MS) is a global health problem associated with an increased risk of diabetes mellitus (DM), cardiovascular disease (CVD), and cancer. Body composition parameters, including obesity, visceral adiposity, sarcopenia contribute to the development MS CVD. Previous studies have investigated association individual body parameters MS. Studies analyzing between multiple been rare. We aimed investigate sarcopenia. Methods A total 13,620 subjects who underwent voluntary routine...
Background/Aims Ghrelin levels are known to increase in patients with ulcerative colitis (UC), but serum obestatin UC not well elucidated. The aim of this study was examine the relationship between ghrelin and disease activity patients. Methods were measured 21 (12 active 9 remission) using enzyme-linked immunosorbent assay. circulating these 2 hormones analyzed. colonic mucosal mRNA expression by quantitative reverse transcription polymerase chain reaction. Results mean values significantly...
We aimed to assess the relationship between lifestyle-related variables, metabolic syndrome, and lower urinary tract symptoms (LUTS) in men ≥ 40 years. also assessed impact of these variables on quality life. From 2014 2020, 5355 who underwent health check-ups with I-PSS questionnaires at our institute were included analysis. The LUTS sleep disorders moderate severe degrees stress assessed. Multivariate analysis was performed determine associated prostate volume. Moderate present 1317...
<b><i>Background/Aims:</i></b> Spontaneous small-bowel perforation caused by Crohn's disease (CD) or intestinal tuberculosis (ITB) is a rare entity. We investigated the clinical features and radiologic findings of patients with CD ITB who presented spontaneous perforation. <b><i>Methods:</i></b> Between January 2001 December 2010, sixty-two underwent surgery due to perforation, including 21 (33.9%) 18 (29.0%) patients. Clinical were compared...