Yonsei University · Engineering
Professor Dongwoo Kim's research lab specializes in advanced oxide semiconductor devices and their applications in biomedical sensing and imaging. The lab focuses on developing oxide-based phototransistors and optical synaptic transistors with enhanced visible light sensitivity through defect engineering, such as oxygen vacancy creation and nanostructured oxide insertion. A key research direction involves leveraging these materials for non-invasive medical diagnostics, including PET/CT-based glioma and hepatocellular carcinoma (HCC) prognosis using radiotracer imaging. The lab also explores natural compounds, such as grape seed extract, for their therapeutic potential in metabolic disease models.
Figures are computed from collected data and may differ slightly.
We discuss our findings from a study using Twitter lists to infer the characteristics and interests of users. Gathering and structuring user interest has been challenging because it often requires expensive and/or proprietary data such as users' clickthrough logs or desktop histories. We show that by using the tweets of all the users in a Twitter list, we can discover characteristics and interests of the users in that list, even if the users as individuals do not tweet about those interests. We
COVID-19 made considerable changes in the lifestyle of people, which have led to a rise in energy use in homes. So, this study investigated the relationship between COVID-19 and domestic hot water demands. For this purpose, a nondimensional and principal component analysis were conducted to find out the influencing factors using demand data before and after COVID-19 from our study site. Analysis showed that the COVID-19 outbreak affected the daily peak time and the amount of domestic hot water u
Visible light detection of oxide phototransistors <italic>via</italic> insertion of an oxide-mesh inside the channel creating oxygen vacancies that increase subgap states.
The present study observed the effects of grape seed extract (GSE) and its ethylacetate (E) and ethylacetate/ethanol (EE) fractions on blood glucose levels in C57BL/KsJ-lepr(db)/lepr(db) (db/db) mice at 4-12 weeks of age. In the GSE- and EE fraction-treated db/db group, the blood glucose concentration began to be lower than that in the vehicle-treated db/db group at 6 weeks after treatment, while the blood glucose concentration in the E fraction-treated db/db group was similar to that in the veh
F-FDG uptake of IDH1-mutant gliomas was significantly lower than that of IDH1 wild-type gliomas. IDH1 mutation was the most important factor in identifying patients with the best prognosis, whereas increased F-FDG uptake provided additional prognostic information for predicting poor OS among patients with IDH1 wild-type gliomas.
Abstract Amorphous indium–gallium–zinc oxide (IGZO)‐based optical synaptic transistor using visible light as the signal that shows a clear difference between long‐term memory (LTM) and short‐term memory (STM) is introduced in this study. However, since oxide semiconductors, including IGZO, do not sense visible light due to their high band gap energy of around 3.0 eV, defects are generated intentionally within IGZO channel layer to enable sensitivity to the visible light by inserting two layers o
Positron emission tomography/computed tomography (PET/CT) has dramatically altered the landscape of noninvasive glioma evaluation, offering complementary insights to those gained through magnetic resonance imaging (MRI). PET/CT scans enable a multifaceted analysis of glioma biology, supporting clinical applications from grading and differential diagnosis to mapping the full extent of tumors and planning subsequent treatments and evaluations. With a broad array of specialized radiotracers, resear
TLG, a parameter incorporating both the degree of 18F-FDG uptake and amount of metabolically active tumor volume on pretreatment 18F-FDG PET/CT, is a better prognostic factor than TD on 90Y PET/CT for predicting OS in HCC patients treated with 90Y TARE.
T/BHU is a simple and effective parameter to stratify the risk of malignancy in thyroid incidentalomas found on PET/CT. This may be of clinical relevance in those nodules with nondiagnostic or undetermined significance cytologies upon FNAB in the scheme of current clinical practice.
Summary Dokdo Island has a unique biodiversity that has been preserved as a natural monument. Although the biodiversity of Dokdo has been investigated, little information is available regarding the nematodes. The diversity of plant-parasitic nematodes was investigated using both ITS and D2-D3 sequences. Nematodes extracted from 59 rhizosphere soil samples were morphologically identified as belonging to eight genera: Geocenamus , Helicotylenchus , Rotylenchulus , Heterodera , Paratylenchus , Prat
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