Kee‐Tae Kim
A5084142417- Astrophysics and Star Formation Studies
- Stellar, planetary, and galactic studies
- Molecular Spectroscopy and Structure
- Astro and Planetary Science
- Atmospheric Ozone and Climate
- Galaxies: Formation, Evolution, Phenomena
- Ginseng Biological Effects and Applications
- Food Quality and Safety Studies
- Pharmacological Effects of Natural Compounds
- Mechanisms of cancer metastasis
- Probiotics and Fermented Foods
- Cancer Mechanisms and Therapy
- Gamma-ray bursts and supernovae
- Astronomy and Astrophysical Research
- Astrophysics and Cosmic Phenomena
- Nuclear Receptors and Signaling
- Natural product bioactivities and synthesis
- Astrophysical Phenomena and Observations
- Essential Oils and Antimicrobial Activity
- Radio Astronomy Observations and Technology
- Advanced Combustion Engine Technologies
- Geophysics and Gravity Measurements
- Solar and Space Plasma Dynamics
- Protein Hydrolysis and Bioactive Peptides
- Phytochemicals and Antioxidant Activities
Korea Astronomy and Space Science Institute
2015-2024
Korea University of Science and Technology
2019-2024
Konkuk University
2013-2023
Gachon University
2023
The Graduate University for Advanced Studies, SOKENDAI
2019-2022
National Astronomical Observatory of Japan
2019-2022
Sogang University
2017-2022
Konkuk University Medical Center
2011-2022
Daegu Gyeongbuk Institute of Science and Technology
2016-2021
Max Planck Institute for Radio Astronomy
2015
Defects in polycystin-2, a ubiquitous transmembrane glycoprotein of unknown function, is major cause autosomal dominant polycystic kidney disease (ADPKD), whose manifestation entails the development fluid-filled cysts target organs. Here, we demonstrate that polycystin-2 present term human syncytiotrophoblast, where it behaves as nonselective cation channel. Lipid bilayer reconstitution polycystin-2-positive syncytiotrophoblast apical membranes displayed channel with multiple subconductance...
We present the first results from B-fields In STar-forming Region Observations (BISTRO) survey, using Sub-millimetre Common-User Bolometer Array 2 (SCUBA-2) camera, with its associated polarimeter (POL-2), on James Clerk Maxwell Telescope (JCMT) in Hawaii. discuss survey's aims and objectives. describe rationale behind questions which survey will aim to answer. The most important of these is role magnetic fields star formation process scale individual filaments cores dense regions. data...
ABSTRACT We investigate the presence of hub-filament systems in a large sample 146 active proto-clusters, using H13CO+ J = 1-0 molecular line data obtained from ATOMS survey. find that filaments are ubiquitous and very common dense core scales (∼0.1 pc) to clump/cloud (∼1–10 pc). The proportion proto-clusters containing decreases with increasing dust temperature (Td) luminosity-to-mass ratios (L/M) clumps, indicating stellar feedback H ii regions gradually destroys as evolve. Clear velocity...
Abstract Protostellar outflows and jets are almost ubiquitous characteristics during the mass accretion phase encode history of stellar accretion, complex organic molecule (COM) formation, planet formation. Episodic likely connected to episodic through disk. Despite importance, studies on ejection links have not been done yet in a systematic fashion using high-sensitivity high-resolution observations. To explore mechanisms chronologies events, we investigated 39 fields containing protostars...
We have carried out 21 cm radio continuum observations of 16 ultracompact H II regions using the VLA (DnC array) in a search for associated extended emission. also observed H76α recombination line toward all sources and He76α at positions with strong The UC simple morphologies large (≳10) ratios single-dish to fluxes. detected emission sources. consists one several compact (~1' or 0.5-5 pc) components diffuse (2'-12' 4-19 envelope. All but two are located components, where always correspond...
A primary cilium is an antenna-like structure on the cell surface that plays a crucial role in sensory perception and signal transduction. Mitochondria, 'powerhouse' of cell, control survival, death. The cellular ability to remove dysfunctional mitochondria through mitophagy important for survival. We show here mitochondrial stress, caused by respiratory complex inhibitors excessive fission, robustly stimulates ciliogenesis different types cells including neuronal cells. Mitochondrial...
The "ATOMS," standing for {\it ALMA Three-millimeter Observations of Massive Star-forming regions}, survey has observed 146 active star forming regions with Band 3, aiming to systematically investigate the spatial distribution various dense gas tracers in a large sample Galactic massive clumps, study roles stellar feedback formation, and characterize filamentary structures inside clumps. In this work, observations, data analysis, example science "ATOMS" are presented, using case G9.62+0.19...
Black gamju is Korean traditional beverage fermented with molds. The aim of this study was to assess the probiotic properties and antioxidant activities novel Pediococcus pentosaceus SC28 Levilactobacillus brevis KU15151 develop black bioactive for health. Tolerance against artificial gastric juice bile salts, adhesion ability on HT-29 cells strains, antibiotics susceptibility were evaluated as probiotics, various enzyme productions detected. 2,2-diphenyl-1-picrylhydrazyl assay,...
Context. Molecular filaments and hubs have received special attention recently thanks to new studies showing their key role in star formation. While the (column) density velocity structures of both been carefully studied, magnetic field (B-field) properties yet be characterized. Consequently, B-fields formation evolution hub-filament systems is not well constrained. Aims. We aim understand B-field its interplay with turbulence gravity dynamical NGC 6334 filament network that harbours...
Class II methanol masers are signs of massive young stellar objects (MYSOs). Recent findings show that MYSO accretion bursts cause flares these masers. Thus, maser monitoring can be used to identify such bursts. Burst-induced SED changes provide valuable information on a very intense phase high-mass star formation. In mid-January 2019, flare the G358.93-0.03 was reported. ALMA and SMA imaging resolved core forming region proved association with brightest continuum source MM1. However, no...
Abstract Leveraging the high resolution, sensitivity, and wide frequency coverage of Atacama Large Millimeter/submillimeter Array (ALMA), QUARKS survey, standing for “Querying Underlying mechanisms massive star formation with ALMA-Resolved gas Kinematics Structures”, is observing 139 star-forming clumps at ALMA Band 6 ( λ ∼ 1.3 mm). This paper introduces Compact (ACA) 7 m data describing ACA observations reduction. Combining multi-wavelength data, we provide first edition atlas, offering...
We report the very long baseline interferometry (VLBI) observing performance of Korean VLBI Network (KVN). The KVN is first millimeter-dedicated network in East Asia. consists three 21 m radio telescopes with lengths a range 305–476 km. quasi-optical system equipped on antennas allows simultaneous observations at 22, 43, 86, and 129 GHz. fringes were obtained 22 GHz 2010 June 8. Test 43 September 30 2011 April 4 confirmed that full cycle works according to specification: scheduling, antenna...
We report simultaneous multifrequency observing performance at 22 and 43 GHz of the 21 m shaped-Cassegrain radio telescopes Korean VLBI Network (KVN). KVN is first millimeter-dedicated network in Korea having a maximum baseline length 480 km. It currently operates planned to operate four frequency bands: 22, 43, 86, 129 GHz. The unique quasi optics enable observations based on efficient beam filtering accurate antenna-beam alignment found that offset beams within less than 5'' over all...
The transformation of ginsenoside Rb1 into a specific minor using Aspergillus niger KCCM 11239, as well the identification transformed products and pathway via thin layer chromatography high performance liquid were evaluated to develop new biologically active material. conversion generated Rd, Rg3, Rh2, compound K although reaction rates low due concentration. In enzymatic conversion, all was converted Rd Rg3 after 24 h incubation. crude enzyme (β-glucosidase) from A. 11239 hydrolyzed...
We present the results of dust emission polarization measurements Ophiuchus-B (Oph-B) carried out using Submillimetre Common-User Bolometer Array 2 (SCUBA-2) camera with its associated polarimeter (POL-2) on James Clerk Maxwell Telescope (JCMT) in Hawaii. This work is part B-fields In Star-forming Region Observations (BISTRO) survey initiated to understand role magnetic fields star formation for nearby star-forming molecular clouds. a first look at geometry and strength Oph-B. The field...
The low dust temperatures (<14 K) of Planck Galactic cold clumps (PGCCs) make them ideal targets to probe the initial conditions and very early phase star formation. "TOP-SCOPE" is a joint survey program targeting ∼2000 PGCCs in J = 1–0 transitions CO isotopologues ∼1000 850 μm continuum emission. objective surveys (SMT 10 m, KVN 21 NRO 45 m) statistically study occurring during formation evolution molecular clouds, across wide range environments. observations, data analysis, example science...
Abstract We present (sub)millimeter imaging at 0.″5 resolution of the massive star-forming region G358.93−0.03 acquired in multiple epochs 2 and 3 months following recent flaring its 6.7 GHz CH OH maser emission. Using Submillimeter Array Atacama Large Millimeter/submillimeter Array, we have discovered 14 new Class II lines ranging frequency from 199 to 361 GHz, which originate mostly = 1 torsionally excited transitions include one transition. The latter detection provides first...
Summary Hippocampal synaptic function and plasticity deteriorate with age, often resulting in learning memory deficits. As MicroRNAs (miRNAs) are important regulators of neuronal protein expression, we examined whether miRNAs may contribute to this age‐associated decline hippocampal function. We first compared the small RNA transcriptome tissues from young old mice. Among 269 miRNAs, 80 were differentially expressed (≥ twofold) among age groups. focused on 36 upregulated mice those The...
Abstract We present 850 μ m imaging polarimetry data of the ρ Oph-A core taken with Submillimeter Common-User Bolometer Array-2 (SCUBA-2) and its polarimeter (POL-2) as part our ongoing survey project, <?CDATA ${\boldsymbol{B}}$?> -fields In STar forming RegiOns (BISTRO). The polarization vectors are used to identify orientation magnetic field projected on plane sky at a resolution 0.01 pc. 10 subregions distinct fractions angles in 0.2 pc core; some them can be coherent structure Oph...
The stabilization and control of the electrical properties in solution‐processed amorphous‐oxide semiconductors (AOSs) is crucial for realization cost‐effective, high‐performance, large‐area electronics. In particular, impurity diffusion, instability, lack a general substitutional doping strategy active layer hinder industrial implementation copper electrodes fine tuning parameters AOS‐based thin‐film transistors (TFTs). this study, authors employ multifunctional organic‐semiconductor (OSC)...
Stellar feedback from high-mass stars (e.g., H{\sc ii} regions) can strongly influence the surrounding interstellar medium and regulate star formation. Our new ALMA observations reveal sequential formation taking place within one sub-virial filamentary clump (the G9.62 clump) in G9.62+0.19 complex. The 12 dense cores (MM 1-12) detected by are at very different evolutionary stages, starless core phase to UC region phase. Three (MM6, MM7/G, MM8/F) associated with outflows. mass-velocity...