A5101847897- Intracranial Aneurysms: Treatment and Complications
- Cerebrovascular and Carotid Artery Diseases
- Moyamoya disease diagnosis and treatment
- Conducting polymers and applications
- Vascular Malformations Diagnosis and Treatment
- Acute Ischemic Stroke Management
- Organic Electronics and Photovoltaics
- Thermochemical Biomass Conversion Processes
- Intracerebral and Subarachnoid Hemorrhage Research
- Neurological Complications and Syndromes
- Graphene research and applications
- Meningioma and schwannoma management
- Traumatic Brain Injury and Neurovascular Disturbances
- Stellar, planetary, and galactic studies
- Iron and Steelmaking Processes
- Perovskite Materials and Applications
- Combustion and flame dynamics
- Adaptive optics and wavefront sensing
- Thin-Film Transistor Technologies
- Photonic and Optical Devices
- Astronomy and Astrophysical Research
- Advancements in Battery Materials
- Spinal Fractures and Fixation Techniques
- Atrial Fibrillation Management and Outcomes
- Radiative Heat Transfer Studies
Seoul National University Hospital
2013-2025
Seoul National University
2007-2024
Korea Electric Power Corporation (South Korea)
2024
Pusan National University
2019-2024
Yonsei University
2010-2024
Korea Telecom (South Korea)
2024
Naver (South Korea)
2024
Seoul Metropolitan Government
2018-2024
Boramae Medical Center
2018-2024
National University College
2024
Multimodal imaging is highly desirable for accurate diagnosis because it can provide complementary information from each modality. In this study, a sol-gel reaction of tantalum(V) ethoxide in microemulsion containing Fe(3)O(4) nanoparticles (NPs) was used to synthesize multifunctional Fe(3)O(4)/TaO(x) core/shell NPs, which were biocompatible and exhibited prolonged circulation time. When the NPs intravenously injected, tumor-associated vessel observed using computed tomography (CT), magnetic...
The Immersion Grating Infrared Spectrometer (IGRINS) is a compact high-resolution near-infrared cross-dispersed spectrograph whose primary disperser silicon immersion grating. IGRINS covers the entire portion of wavelength range between 1.45 and 2.45μm that accessible from ground does so in single exposure with resolving power 40,000. Individual volume phase holographic (VPH) gratings serve as cross-dispersing elements for separate arms covering H K bands. On 2.7m Harlan J. Smith telescope...
Significance PbTe is known to be a promising thermoelectric material for waste heat recovery, so it has been the subject of extensive research involving new approaches. It important note that performances these developed materials can depend on synthesis conditions. We investigated three different routes synthesizing 2% Na-doped and found its figure merit, zT , enhanced ∼2.0 at 773 K. Also, mechanical hardness sample synthesized by this condition was nearly double than other samples. Our...
Group 1 late embryogenesis-abundant (LEA) proteins are a subset of hydrophilins that postulated to play important roles in protecting plant macromolecules from damage during freezing, desiccation, or osmotic stress. To better understand the putative functional group LEA proteins, we analyzed structure protein soybean (Glycine max). Differential scanning calorimetry purified, recombinant demonstrated assumed largely unstructured state solution. In presence trifluoroethanol (50% [w/v]),...
The Immersion Grating Infrared Spectrometer (IGRINS) is a revolutionary instrument that exploits broad spectral coverage at high-resolution in the near-infrared. IGRINS employs silicon immersion grating as primary disperser, and volume-phase holographic gratings cross-disperse H K bands onto Teledyne Hawaii-2RG arrays. use of an facilitates compact cryostat while providing simultaneous wavelength from 1.45 - 2.5 μm. There are no cryogenic mechanisms its high-throughput design maximizes...
The Immersion GRating INfrared Spectrometer (IGRINS) was designed for high-throughput with the expectation of being a visitor instrument at progressively larger observing facilities. IGRINS achieves R∼45000 and > 20,000 resolution elements spanning H K bands (1.45-2.5μm) by employing silicon immersion grating as primary disperser volume-phase holographic gratings cross-dispersers. After commissioning on 2.7 meter Harlan J. Smith Telescope McDonald Observatory, had more than 350 scheduled...
Abstract Purpose Bypass surgery is regarded as the standard treatment option for symptomatic and hemodynamically unstable moyamoya disease (MMD). However, there ongoing debate about most effective type of bypass surgery. We aimed to analyze long-term outcomes combined indirect bypasses MMD patients through intra-individual comparisons. Methods Of 896 who underwent 1084 surgeries between 2007 2021, 24 with on one side other were ultimately enrolled in this study. Clinical, angiographic...
Recurrent hemorrhage is a serious neurosurgical problem in adult moyamoya disease (MMD) patients.To find the natural history and risk factors of recurrent cases hemorrhagic MMD.One hundred seventy-six MMD patients presenting with were enrolled. Patients' medical records radiological images retrospectively reviewed. Clinical features hemorrhage, related analyzed. Poor neurological outcome was defined as score on modified Rankin Scale 4 to 6. The hemisphere which initial occurred considered...
Objective:The aim of this study was to determine the interobserver and intermodality agreement in interpretation time-of-flight (TOF) MR angiography (MRA) for follow-up coiled intracranial aneurysms with Enterprise stent.Materials Methods: Two experienced neurointerventionists independently reviewed MRA studies 40 consecutive patients 44 aneurysms.All were treated assistance from stent radiologic intervals greater than 6 months after endovascular therapy.Digital subtraction (DSA) served as...
PbTe is known as a good thermoelectric material for waste heat recovery in the temperature range of 500 to 900 K. While various approaches such nanostructuring thermal conductivity reduction, resonant impurities, and band convergence by alloying power factor enhancement have been proposed recently enhancing properties PbTe, systematic study on optimizing synthesis conditions also crucial find better base material, upon which those new can be applied further improve material. In this paper,...
We present a library of high-resolution (R $\equiv$ $\lambda$/$\Delta$$\lambda$ $\sim$ 45,000) and high signal-to-noise ratio (S/N $\geq$ 200) near-infrared spectra for stars wide range spectral types luminosity classes. The were obtained with the Immersion GRating INfrared Spectrograph (IGRINS) covering full H (1.496-1.780 $\mu$m) K (2.080-2.460 atmospheric windows. targets primarily selected being MK standard effective temperatures surface gravities metallicities close to Solar value....
Fifteen years of experience with adult moyamoya disease (MMD) in a single department were analyzed to describe the clinical features and clarify existence entity MMD special reference its diagnosis. This study included 348 patients treated between 1996 2010. Male female ratio was 128 220 mean age 39 years. The presence neurological symptoms signs during childhood Suzuki stage according evaluated. Adult differentiated from other diseases, such as vasculitis, by comparing laboratory data...
Organic photovoltaic cells with an ordered heterojunction (OHJ) active layer are expected to show increased performance. In the study described here, OHJ were fabricated using a combination of nanoimprinting and electrohydrodynamic (EHD) spray deposition methods. After electron donor material was nanoimprinted PDMS stamp (valley width: 230 nm, period: 590 nm) duplicated from Si nanomold, acceptor deposited onto EHD method. The donor–acceptor interface observed by obtaining cross-sectional...
A high-pressure solvent vapor annealing (HPSVA) treatment is suggested as an process to rapidly achieve high-performance organic photovoltaics (OPVs); this can be compatible with roll-to-roll processing methods and uses a benign solvent: acetone. Solvent produce advantageous vertical distribution in the active layer; however, conventional also time-consuming. To shorten time, exposed on layer of OPVs. Acetone nonsolvent for poly(3-hexylthiophene-2,5-diyl) (P3HT), but it dissolve small...