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| WoS | SCOPUS | Document Type | Document Title | Abstract | Authors | Affiliation | ResearcherID (WoS) | AuthorsID (SCOPUS) | Author Email(s) | Journal Name | JCR Abbreviation | ISSN | eISSN | Volume | Issue | WoS Edition | WoS Category | JCR Year | IF | JCR (%) | FWCI | FWCI Update Date | WoS Citation | SCOPUS Citation | Keywords (WoS) | KeywordsPlus (WoS) | Keywords (SCOPUS) | KeywordsPlus (SCOPUS) | Language | Publication Stage | Publication Year | Publication Date | DOI | JCR Link | DOI Link | WOS Link | SCOPUS Link |
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| ○ | ○ | Article | Sonic and Electrical Resistivity Tomography of Pinus densiflora Stems Infected with Pine Wood Nematode | The structural integrity of tree stems can be evaluated using tomography, a minimally invasive method. We used sonic tomography (SoT) and electrical resistivity tomography (ERT) to compare internal states and electrical properties between healthy and pine wood nematode-infected Pinus densiflora stems. A total of 25 trees, consisting of five healthy and 20 infected trees, were assessed. Both SoT and ERT were performed at 50, 100 and 200 cm above ground level. Heartwood and sapwood electrical resistivity (ER) values were extracted from the tomograms to quantitatively evaluate the ERT results. The SoT results showed that all trees had sound sapwood and heartwood. Significant differences in mean ER were found between the healthy trees (1037.54 Omega m) and infected trees (764.94 Omega m). While the ER of sapwood remained constant in healthy trees, it increased with measurement height in infected trees, and differences in ER between heartwood and sapwood were significantly lower in infected trees than in healthy trees. These ER differences were likely to be attributed to decreases in resin production and changes in microbial communities within the stems of infected trees. These results suggest that SoT and ERT could be used as minimally invasive diagnostic tools for pine wilt disease. | Park, Junhyung; Seo, Dahye; Ahn, Hyojun; Kim, Jinwoo; Kim, Ki Woo | Kyungpook Natl Univ, Human Resources Dev Ctr Big Data based Glocal Fore, Daegu, South Korea; Kyungpook Natl Univ, Dept Ecol & Environm Syst, Sangju, South Korea; Gyeongsangbuk do Forest Environm Res Inst, Dept Forest Environm, Gyeongju, South Korea; Kyungpook Natl Univ, Tree Diagnost Ctr, Sangju, South Korea | 57202928407; 57218319875; 59461367500; 59930307500; 57201369889 | kiwoo@knu.ac.kr; | FOREST PATHOLOGY | FOREST PATHOL | 1437-4781 | 1439-0329 | 55 | 3 | SCIE | FORESTRY | 2024 | 1 | 60.3 | 0 | 2025-06-11 | 0 | 0 | electrical resistivity; minimally invasive technique; pine wilt disease; sonic tomography | DECAY; TOOL | electrical resistivity; minimally invasive technique; pine wilt disease; sonic tomography | acoustic tomography; electrical resistivity; nematode; pine; resin; wilt | English | 2025 | 2025-06 | 10.1111/efp.70027 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | Thermodynamic Fluorescence Behavior of a Fluorenone Derivative through Solvent- and Temperature-Controlled Hydrogen Bonding | A fluorenone derivative with an extended conjugated structure emitting visible light was examined as a functional fluorescent dye that responds to solvent and heat stimuli in a precisely controlled manner. Intermolecular hydrogen bonds between the fluorenone dye and solvent, which cause fluorescence (FL) quenching due to vibronic coupling, were broken and regenerated by adjusting the hydrogen bond acidity and basicity of solvent mixtures in various combinations or by varying the temperature. The fluorenone dye exhibited a unique heat-induced FL emission enhancement during heating and returned to the quenched state during cooling. Thus, this FL change was highly reversible and repeatable. Moreover, through thermodynamic consideration based on the spectroscopic analysis, the Gibbs energy change was calculated for each solvent mixture composition to predict the thermodynamic preference for FL enhancement. | Lee, Jineun; Sakaguchi, Toshikazu; Kwak, Giseop | Kyungpook Natl Univ, Dept Polymer Sci & Engn, Polymer Nanomat Lab, 1370 Sankyuk Dong, Daegu 70201, South Korea; Univ Fukui, Grad Sch Engn, Dept Mat Sci & Engn, Bunkyo 3 9 1, Fukui 9108507, Japan | ; , Giseop/M-8370-2018 | 57226333374; 7202934922; 17137322300 | sakaguchi@matse.u-fukui.ac.jp; gkwak@knu.ac.kr; | CHEMPHOTOCHEM | CHEMPHOTOCHEM | 2367-0932 | 9 | 2 | SCIE | CHEMISTRY, PHYSICAL | 2024 | 3 | 60.3 | 0 | 2025-05-07 | 0 | 0 | Fluorenone; Solvent; Hydrogen bonding; Vibronic coupling; Gibbs energy | INTRAMOLECULAR PROTON-TRANSFER; PHOTOINDUCED ELECTRON-TRANSFER; EXCITED-STATE; ALCOHOLS | Fluorenone; Gibbs energy; Hydrogen bonding; Solvent; Vibronic coupling | Fluorescence quenching; Gibbs free energy; Hydrogen bonds; Conjugated structures; Energy; Fluorenones; Fluorescence behaviors; Fluorescent dyes; Functionals; Intermolecular hydrogen bonds; Solvent mixtures; Vibronic coupling; Visible light; Spectroscopic analysis | English | 2025 | 2025-02 | 10.1002/cptc.202400314 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | Association with Elevated Somatic Cell Counts and Characterization of Aerococcus viridans Isolates from Bovine Mastitis Milk in South Korea | Aerococcus viridans, an emerging pathogen, is responsible for the recent increase in cases of bovine mastitis. However, its specific effects on mastitis remain largely unexplored. In this study, we examined the correlation between A. viridans-induced mastitis infections and somatic cell counts (SCCs), and characteristics of A. viridans isolates from bovine mastitis milk. Among 1774 mastitis milk samples collected between 2016 and 2021 in South Korea, 69 (3.9%) A. viridans isolates were obtained. Mastitis milk samples containing A. viridans exhibited significantly higher SCCs than did non-mastitis samples. Most isolates (80.5%) were associated with subclinical mastitis (200-1200 x 10(3) cells/mL), whereas 19.5% were associated with clinical mastitis (> 1.2 x 10(6) cells/mL). In pulsed-field gel electrophoresis analysis, A. viridans isolates displayed substantial genetic diversity, with no dominant clones identified. Antimicrobial susceptibility testing revealed high resistance rates to ceftiofur (46.4%) and oxacillin + 2% NaCl (44.9%) among beta-lactams, followed by tetracycline (36.2%) and erythromycin (10.1%), with 21.7% isolates being multidrug-resistant. Fifty-four isolates (78.3%) were able to form biofilms, with all recent isolates being biofilm-positive, in contrast to several earlier non-producers. Our findings suggest the necessity for targeted management strategies and continuous monitoring for mitigating A. viridans-induced mastitis in dairy cows. | Kang, Hye Jeong; You, Ju-Yeon; Kim, Seung Hoe; Moon, Jin-San; Kim, Ha-Young; Kim, Jae-Myeong; Lee, Young Ju; Kang, Hyun-Mi | Anim & Plant Quarantine Agcy, Bacterial Dis Div, 177,Hyeoksin 8 Ro, Gimcheon Si 39660, Gyeongsangbug Do, South Korea; Kyungpook Natl Univ, Coll Vet Med, 80 Daehak Ro, Daegu 41566, South Korea; Kyungpook Natl Univ, Inst Vet Biomed Sci, 80 Daehak Ro, Daegu 41566, South Korea | 57208791752; 59463453600; 59350395800; 59679420400; 53877655700; 59467135100; 59819261400; 7404070907 | youngju@knu.ac.kr; greenkang@korea.kr; | CURRENT MICROBIOLOGY | CURR MICROBIOL | 0343-8651 | 1432-0991 | 82 | 7 | SCIE | MICROBIOLOGY | 2024 | 2.6 | 60.4 | N/A | 0 | 0 | SUSCEPTIBILITY; PATHOGENS; COWS | Aerococcus; Animals; Anti-Bacterial Agents; Cattle; Cell Count; Electrophoresis, Gel, Pulsed-Field; Female; Genetic Variation; Gram-Positive Bacterial Infections; Mastitis, Bovine; Microbial Sensitivity Tests; Milk; Republic of Korea; aminocoumarin derivative; ampicillin; beta lactam; cefalotin; ceftiofur; cephem derivative; erythromycin; glycopeptide; lincosamide; macrolide; oxacillin; penicillin derivative; pirlimycin; sodium chloride; sulfadimethoxine; sulfonamide; tetracycline; tetracycline derivative; vancomycin; antiinfective agent; Aerococcus viridans; agricultural land; animal experiment; animal model; antibiotic resistance; antibiotic sensitivity; Article; bacterium characterization; bacterium examination; bacterium isolate; biofilm; biofilm formation; bovine mastitis; cell count; clone; comparative study; controlled study; correlation analysis; dairy cattle; genetic variability; genetic variation; milk; multidrug resistance; nonhuman; pulsed field gel electrophoresis; sample; somatic cell; South Korea; Aerococcus; animal; bovine; cell count; classification; cytology; drug effect; female; genetics; Gram positive infection; isolation and purification; microbial sensitivity test; microbiology; veterinary medicine | English | 2025 | 2025-07 | 10.1007/s00284-025-04291-1 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |||||
| ○ | ○ | Article | Lactic acid bacteria from Ethiopian traditional beverage, Tella: technological and metabolic profiles for industrial application | Tella is a traditional beverage widely accepted by consumers, despite the lack of product consistency owing to its reliance on natural fermentation. This study aimed to identify potential industrial lactic acid bacteria (LAB) starter cultures based on their technological properties. Seven LAB strains isolated from Tella were characterized for their carbohydrate utilization, salt content, temperature, and acid tolerances, growth and acidification rates, and metabolite profiles. Most strains efficiently utilized various carbohydrates, with Lactiplantibacillus plantarum TDM41 showing exceptional versatility. The strains exhibited similar growth characteristics. Principal component analysis of stress tolerance properties revealed that L. plantarum TDM41, Pediococcus pentosaceus TAA01, and Leuconostoc mesenteroides TDB22 exhibited superior tolerance ability. Strong acidification properties were detected in the L. plantarum TDM41, P. pentosaceus TAA01, and Leuconostoc mesenteroides TDB22 strains after 24 h incubation at 30 degrees C. L. plantarum TDM41 displayed the fastest acidification rate throughout the analysis period. All LAB strains produced significant amounts of diverse organic acids, including lactic acid, citric acid, acetic acid, malic acid, and succinic acid, with lactic acid being the primary acid produced by each strain. Overall, strains L. plantarum TDM41 and P. pentosaceus TAA01 prove to be potential candidates for Tella industrial starter cultures and similar cereal products owing to their robust technological properties. | Yehuala, Gashaw Assefa; Choe, Jaein; Shibeshi, Nurelegne Tefera; Delessa, Kumsa; Desalegn, Asnake; Park, Mi-Kyung | Kyungpook Natl Univ, Sch Food Sci & Biotechnol, Daegu 41566, South Korea; Kyungpook Natl Univ, Food & Bioind Res Inst, Daegu 41566, South Korea; Addis Ababa Sci & Technol Univ, Biotechnol & Bioproc Ctr Excellence, POB 16417, Addis Ababa, Ethiopia; Addis Ababa Univ, Addis Ababa Inst Technol, Sch Chem & Bioengn, POB 385, Addis Ababa, Ethiopia; Addis Ababa Univ, Coll Nat & Computat Sci, Dept Microbial Cellular & Mol Biol, POB 1176, Addis Ababa, Ethiopia | choe, jaein/JMQ-8957-2023; Park, Mi-Kyung/J-9643-2017 | 58029543700; 57226770667; 57195303639; 59558185300; 57219774341; 7404491155 | parkmik@knu.ac.kr; | JOURNAL OF MICROBIOLOGY | J MICROBIOL | 1225-8873 | 1976-3794 | 63 | 1 | SCIE | MICROBIOLOGY | 2024 | 2.6 | 60.4 | 0 | 2025-05-07 | 0 | 1 | stress tolerance; acidification; metabolite profile; starter culture; Tella; LAB | STARTER CULTURE; FOOD FERMENTATION; STRESS RESPONSES; LACTOBACILLUS; SELECTION | acidification; LAB; metabolite profile; starter culture; stress tolerance; Tella | Beverages; Ethiopia; Fermentation; Food Microbiology; Hydrogen-Ion Concentration; Lactic Acid; Lactobacillales; Lactobacillus plantarum; Leuconostoc mesenteroides; Malates; Metabolome; Pediococcus pentosaceus; lactic acid; malic acid; beverage; classification; Ethiopia; fermentation; food control; growth, development and aging; isolation and purification; Lactobacillales; Lactobacillus plantarum; Leuconostoc mesenteroides; metabolism; metabolome; microbiology; Pediococcus pentosaceus; pH | English | 2025 | 2025-01 | 10.71150/jm.2409008 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |
| ○ | ○ | Article | Protection of Ducks Against Highly Pathogenic H5Nx Avian Influenza Viruses by HA Cleavage Site Peptide Vaccine | Highly pathogenic H5Nx avian influenza viruses are endemic in animals in many countries. These viruses cause the severe diseases in chickens, but they cause much milder diseases in ducks. The vaccination is one of the tools to prevent the infections of ducks by highly pathogenic H5Nx avian influenza viruses. Here, we studied the efficacy of oil-adjuvanted H5 cleavage peptide vaccine in ducks. The vaccinated ducks challenged with H5N6 and H5N8 avian influenza viruses were protected without viral detection in the tracheal and cloacal swabs. The protective immunity in the immunized ducks lasted until 16 weeks post-vaccination. Our results suggest that H5 cleavage site peptide vaccine can be one of the candidate vaccines to provide the protective immunity to ducks against H5Nx avian influenza viruses. | Seo, Heejeong; Jang, Yunyueng; Seo, Sang Heui | Chungnam Natl Univ, PioneerVaccine Inc, Daejeon 34134, South Korea; Kyungpook Natl Univ, Coll Vet Med, Daegu 34134, South Korea; Chungnam Natl Univ, Coll Vet Med, 99 Dae Hak Ro, Daejeon 34134, South Korea | 58553234800; 57203534125; 55666519400 | seos@cnu.ac.kr; | CURRENT MICROBIOLOGY | CURR MICROBIOL | 0343-8651 | 1432-0991 | 82 | 5 | SCIE | MICROBIOLOGY | 2024 | 2.6 | 60.4 | 0 | 2025-05-07 | 0 | 0 | CLADE 2.3.4.4B; DOMESTIC DUCKS; HEMAGGLUTININ; GENE; CHALLENGE; EVOLUTION; INFECTION; OUTBREAK; EFFICACY | Animals; Antibodies, Viral; Ducks; Hemagglutinin Glycoproteins, Influenza Virus; Influenza A virus; Influenza A Virus, H5N8 Subtype; Influenza in Birds; Influenza Vaccines; Poultry Diseases; Protein Subunit Vaccines; Vaccination; Vaccines, Subunit; avian influenza vaccine; peptide vaccine; hemagglutinin, avian influenza A virus; influenza vaccine; Influenza virus hemagglutinin; subunit vaccine; virus antibody; animal tissue; antibody response; antibody titer; Article; avian influenza; avian influenza virus; cloaca; controlled study; drug efficacy; duck; histopathology; in vivo study; infection prevention; inflammatory cell; Influenza A virus (H5N6); Influenza A virus (H5N8); influenza vaccination; interstitial pneumonia; lung parenchyma; mortality rate; nonhuman; TCID50; trachea; virus detection; virus load; animal; avian influenza; bird disease; immunology; Influenza A virus; prevention and control; vaccination; virology | English | 2025 | 2025-05 | 10.1007/s00284-025-04182-5 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||||
| ○ | ○ | Article | Protocol for the generation and purification of minicells from Lactiplantibacillus plantarum | Minicells, which are anucleate cells generated by irregular cell division, are emerging as promising drug delivery systems owing to advances in synthetic biology. However, their development is largely limited to a few model bacteria, highlighting the need to explore mini-cell platforms in alternative hosts. Lactiplantibacillus plantarum (L. plantarum), a probiotic bacterium classified as Generally Recognized as Safe, is an ideal candidate for such exploration. Minicell-producing L. plantarum was engineered by deleting the putative minD gene via plasmid-mediated homologous recombination, which inactivates cell division to form spherical minicells. Anucleate cells were isolated through differential centrifugation and filtration, followed by additional drug treatment to completely eliminate progenitor cells. Microscopy and flow cytometry analyses of the purified sample confirmed the absence of progenitor cells by DAPI staining. This protocol effectively produces bacterial minicells from L. plantarum for use in various biotechnological applications, including therapeutic agent delivery. | Kang, Hyemin; Kim, Donghyun; Kim, Juhyun | Kyungpook Natl Univ, Sch Life Sci, FOUR KNU Creat BioRes Grp BK21, Daegu 41566, South Korea; Seoul Natl Univ, Coll Med, Dept Microbiol & Immunol, Seoul 03080, South Korea; Seoul Natl Univ, Coll Med, Dept Biomed Sci, Seoul 03080, South Korea; Seoul Natl Univ, Inst Endem Dis, Med Res Ctr, Seoul 03080, South Korea | 59951880100; 59951895200; 55829164000 | juhyunkim@knu.ac.kr; | JOURNAL OF MICROBIOLOGY | J MICROBIOL | 1225-8873 | 1976-3794 | 63 | 5 | SCIE | MICROBIOLOGY | 2024 | 2.6 | 60.4 | 0 | 0 | L. plantarum; minicells; MinD | LACTOBACILLUS-PLANTARUM; BACILLUS-SUBTILIS; DIVISION-SITE; BACTERIA; EXPRESSION; PLACEMENT; DELIVERY | L. plantarum; MinD; minicells | Bacterial Proteins; Cell Division; Drug Delivery Systems; Flow Cytometry; Homologous Recombination; Lactobacillus plantarum; Plasmids; Probiotics; bacterial protein; probiotic agent; cell division; cytology; drug delivery system; flow cytometry; genetics; homologous recombination; Lactobacillus plantarum; metabolism; plasmid | English | 2025 | 2025-05 | 10.71150/jm.2412002 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||||
| ○ | ○ | Article | Role of the LAMMER kinase LkhA in fungal development and aflatoxin production in Aspergillus flavus | A well-conserved LAMMER kinase in yeast and filamentous fungi, is a dual-specificity kinase with multiple roles in fungal biology. In this study, we assessed the roles of LkhA in Aspergillus flavus, a toxigenic fungus that produces aflatoxin B1. lkhA deletion mutants exhibited defects in fungal growth, conidiophore development, and sclerotia formation. These mutants exhibited impaired tolerance to oxidative and cell wall stresses. Moreover, the absence of lkhA resulted in a decrease in aflatoxin B1 production. The kernel assay revealed that the lkhA deletion mutants exhibited reduced production of conidia and aflatoxin B1, implying that LkhA can affect fungal toxigenesis and pathogenicity. Taken together, these results demonstrate that LkhA is important for differentiation, mycotoxin production, and pathogenicity in A. flavus. | Jeong, Seong-Hwan; Cho, He-Jin; Yu, Jae-Hyuk; Park, Hee-Moon; Park, Hee-Soo | Kyungpook Natl Univ, Dept Integrat Biol, Daegu 41566, South Korea; Kyungpook Natl Univ, Sch Food Sci & Biotechnol, Daegu 41566, South Korea; Univ Wisconsin Madison, Dept Bacteriol, Madison, WI 53706, USA; Chungnam Natl Univ, Coll Biosci & Biotechnol, Dept Microbiol & Mol Biol, Daejeon 34134, South Korea; Kyungpook Natl Univ, Dept Adv Bioconvergence, Daegu 41566, South Korea | Park, Hee-Soo/AAC-6422-2019 | 59951901200; 57214721558; 59468250900; 7601567223; 15751448400 | phsoo97@knu.ac.kr; | JOURNAL OF MICROBIOLOGY | J MICROBIOL | 1225-8873 | 1976-3794 | 63 | 5 | SCIE | MICROBIOLOGY | 2024 | 2.6 | 60.4 | 0 | 0 | Aspergillus flavus; aflatoxin B1; LAMMER kinase; pathogenicity | OXIDATIVE-STRESS; HOMOLOG | aflatoxin B1; Aspergillus flavus; LAMMER kinase; pathogenicity | Aflatoxin B1; Aflatoxins; Aspergillus flavus; Cell Wall; Fungal Proteins; Gene Deletion; Gene Expression Regulation, Fungal; Oxidative Stress; Spores, Fungal; aflatoxin; aflatoxin B1; fungal protein; Aspergillus flavus; biosynthesis; cell wall; enzymology; fungus spore; gene deletion; gene expression regulation; genetics; growth, development and aging; metabolism; oxidative stress; pathogenicity | English | 2025 | 2025-05 | 10.71150/jm.2503007 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |||
| ○ | ○ | Article | Classification and Key Factors for the Snowfall over the Eastern Part of the Korean Peninsula | Typical snowfall structure over the coastal mountainous region of the Korean Peninsula is investigated. East coast-type snowfall (ET) due to the lake-effect over the East Sea of Korea is dominant for snowfall intensity and duration. The ET can be divided by the high-pressure system over the Gaema Plateau (GH) and the extratropical low-pressure system passing southern part of the Korean Peninsula in addition to the GH pattern (GHSL). Composite analysis showed that the GHSL can allow a greater inflow of the snowfall from the sea into the land than the GH. The key factors for snowfall structure are 1) the wind-turning layer (WTL), which is the transition level from the lower-level easterly to the upper-level westerly; 2) vertical wind shear suppressing updrafts near the WTL and 3) the Froude number (Fr), which determines the snowfall penetration beyond the mountain. A higher WTL height indicates a deeper easterly layer, indicating favorable conditions for inland snowfall penetration. The strong vertical wind shear plays a role of suppressed updrafts near the WTL via downward momentum transport. It is presented that updraft limitation is mostly exerted by the wind shear. Fr indicates whether the weather system is blocked or unblocked by the mountains. It is shown that the larger Fr generally increases with height, which means that snow systems or flows near the mountain tops can easily to overcome the topography. It is shown that both dynamic and thermodynamic factors are important for understanding and predicting the structure and regions of snowfall. | Hwang, Byeong-Hun; Yoo, Soojin; Chang, Eun-Chul; Tapiador, Francisco J.; Kim, Kwonil; Lee, Gyuwon | Kongju Natl Univ, Dept Atmospher Sci, Gongju 32588, South Korea; Kongju Natl Univ, Earth Environm Res Ctr, Gongju 32588, South Korea; Univ Castilla La Mancha, Dept Environm Sci, Toledo 45071, Spain; Kyungpook Natl Univ, Ctr Atmospher Remote Sensing CARE, Dept Atmospher Sci, BK21 Weather Extremes Educ & Res Team, Daegu 41566, South Korea; SUNY Stony Brook, Sch Marine & Atmospher Sci, Stony Brook, NY 11794 USA | Tapiador, Francisco/D-2781-2009 | 59744941600; 59744941700; 55626446400; 6602960153; 57191964318; 59815049100 | echang@kongju.ac.kr; | ASIA-PACIFIC JOURNAL OF ATMOSPHERIC SCIENCES | ASIA-PAC J ATMOS SCI | 1976-7633 | 1976-7951 | 61 | 2 | SCIE | METEOROLOGY & ATMOSPHERIC SCIENCES | 2024 | 2.3 | 60.8 | 0 | 2025-05-07 | 0 | 0 | Snowfall; Coastal mountainous region; Wind turning layer; Vertical wind shear; Froude number | IMMERSED BOUNDARY METHOD; PRECIPITATION; TOPOGRAPHY; IMPACTS; FLOW | Coastal mountainous region; Froude number; Snowfall; Vertical wind shear; Wind turning layer | Korea; Froude number; momentum transfer; snow cover; thermodynamic property; topography; updraft; wind shear | English | 2025 | 2025-05 | 10.1007/s13143-025-00399-3 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |
| ○ | ○ | Article | Comprehensive Analysis of PM2.5 Concentrations in the Seoul Metro Underground Stations: Relationships with Indoor Sources and Outdoor Air Quality | This study examined the observed PM2.5 concentration across 247 underground stations consisting of Line-1 to Line-8 of the Seoul Metro from April 2021 to March 2023 in order to understand general characteristics of underground PM2.5 air quality. Approximately, in one-thirds of underground stations (85 stations), annual averaged PM2.5 concentration are over 35 mu g m(-3). Moreover, in 30 underground stations (approximately 12%), it exceeds 50 mu g m(-3), the recommended 24-hour maintenance standard for PM2.5 concentration in underground stations. We found that PM2.5 concentration is considerably influenced by both internal and external factors. Among the internal factors (i.e., depth, the number of passengers and operation frequency), the frequency of subway operation significantly affects changes in PM2.5 concentration however, various internal factors may act in combination. In terms of external factor, there are positive correlation coefficients (r = 0.15-0.95) between daily averaged PM2.5 concentration in underground station and that of the outdoor observatory closest to each underground station. In particular, in underground stations with high PM2.5 concentration, the correlation with outdoor PM2.5 air quality was low, suggesting that for better air quality in underground stations, we need to focus more on reducing the inherent emission from underground stations in highly polluted stations, but for less polluted stations, we need to improve outdoor air quality as well. We believe that this study may provide insights for effective future PM2.5 air quality management in underground stations. | Oh, Hye-Ryun; Park, Doo-Sun R.; Ko, Hye-Young; Seo, Jihoon; Lee, Minseok; Choi, Woosuk | Kyungpook Natl Univ, Dept Earth Sci Educ, Daegu, South Korea; Kyungpook Natl Univ, Dept Atmospher Sci, BK21 Weather Extremes Educ & Res Team, Daegu, South Korea; Kyungpook Natl Univ, Ctr Atmospher REmote Sensing CARE, Daegu, South Korea; Korea Inst Sci & Technol, Climate & Environm Res Inst, Seoul, South Korea; Sejong Univ, Dept Artificial Intelligence & Data Sci, Seoul, South Korea | park, doo-soon/AAM-7730-2020; Seo, Jihoon/A-9499-2013 | 35409958300; 37117659000; 59463820000; 36515557700; 59463643600; 55822495200 | dsrpark@knu.ac.kr; | ASIA-PACIFIC JOURNAL OF ATMOSPHERIC SCIENCES | ASIA-PAC J ATMOS SCI | 1976-7633 | 1976-7951 | 61 | 1 | SCIE | METEOROLOGY & ATMOSPHERIC SCIENCES | 2024 | 2.3 | 60.8 | 0 | 2025-05-07 | 1 | 1 | Indoor air quality; PM2.5; Subway; Underground station; Seoul | AIRBORNE PARTICULATE MATTER; SIZE DISTRIBUTION; PARTICLES; POLLUTION; MORTALITY; EXPOSURE; PM10; CITY | Indoor air quality; PM<sub>2.5</sub>; Seoul; Subway; Underground station | Seoul; air quality; atmospheric pollution; correlation; emission control; general characteristics; indoor air; metro system; particulate matter; pollutant source; pollution monitoring | English | 2025 | 2025-03 | 10.1007/s13143-024-00386-0 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |
| ○ | ○ | Article | Assessment of anxiety, depression, and sexual dysfunction in women undergoing fertility treatment | Objective: Infertility and fertility treatment can lead to considerable physical, emotional, and psychological distress. These effects may be influenced by personality, familial bonds, and support systems within a sociocultural context. This preliminary investigation examined anxiety, depression, and sexual dysfunction in Korean women undergoing in vitro fertilization (IVF)/intracytoplasmic sperm injection (ICSI). Methods: Women scheduled for IVF/ICSI and healthy women seeking general health screening (controls) were enrolled. Participants were asked to complete standardized, validated questionnaires-the Hospital Anxiety and Depression Scale (HADS), Depression Anxiety and Stress Scale (DASS), and Female Sexual Function Index (FSFI)-to assess their levels of anxiety, depression, and sexual function. Results: The mean HADS scores for women undergoing IVF/ICSI were 6.35 +/- 3.48 (range, 0 to 13) for anxiety and 8.32 +/- 3.78 (range, 2 to 15) for depression. However, 12.9% of the women with infertility experienced clinically significant anxiety (HADS-Anxiety score >11), while 32.3% exhibited depression (HADS-Depression score >11). Based on DASS scores, psychological difficulties were more prevalent among women experiencing infertility than among control participants. Total FSFI scores, along with subscale ratings for desire, arousal, lubrication, satisfaction, and pain, were similar between women with infertility and control women. However, the mean score for orgasm was significantly lower in the infertility group (3.16) than among controls. Age, the durations of marriage and infertility, and parity did not significantly influence HADS, DASS, or FSFI scores. Conclusion: Anxiety and depression were more prevalent among women seeking fertility treatment than among healthy controls. Additionally, women with infertility may experience fewer or diminished orgasms. | Park, Joon Cheol | Kyungpook Natl Univ, Kyungpook Natl Univ Hosp, Sch Med, Dept Obstet & Gynecol, 130 Dongdeok Ro, Daegu, South Korea | 14020231400 | jcpark70@knu.ac.kr; | CLINICAL AND EXPERIMENTAL REPRODUCTIVE MEDICINE-CERM | CLIN EXP REPROD MED | 2233-8233 | 2233-8241 | 52 | 1 | ESCI | OBSTETRICS & GYNECOLOGY;REPRODUCTIVE BIOLOGY | 2024 | 1.6 | 61.1 | 0 | 2025-05-07 | 0 | 0 | Anxiety; Depression; Reproductive techniques; assisted; Stress; Sexual dysfunction | INFERTILE WOMEN; PREVALENCE; STRESS; PSYCHOPATHOLOGY; VALIDATION; PREDICTORS; COUPLES; COHORT; RISK | Anxiety; Depression; Reproductive techniques, assisted; Sexual dysfunction; Stress | English | 2025 | 2025-03 | 10.5653/cerm.2024.07465 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |||
| ○ | ○ | Article | Single-center 10-year retrospective analysis of Amplatzer Vascular Plug 4 embolization for pulmonary arteriovenous malformations with feeding arteries of <6 mm | PURPOSE To evaluate the efficacy and safety of Amplatzer Vascular Plug 4 (AVP4) embolization in pulmonary arteriovenous malformations (PAVMs) with small- to medium-sized feeding arteries (<6 mm) and to identify factors affecting persistence and the main persistence patterns after embolization. METHODS Between June 2013 and February 2023, we retrospectively reviewed 100 patients with 217 treated PAVMs. We included PAVMs with feeding arteries <6 mm, treated with AVP4 embolization, and followed adequately with computed tomography (CT). Technical success was defined as flow cessation observed on angiography. Persistence was defined as less than a 70% reduction of the venous sac on CT. We evaluated adverse events for each embolization session. Patterns of persistence were assessed using follow-up angiography. Univariate and multivariate analyses were performed to evaluate factors affecting persistence based on the 70% CT criteria. RESULTS Fifty-one patients (48 women, 3 men; mean age: 50.8 years; age range: 16-71 years) with 103 PAVMs met the inclusion criteria. The technical success rate was 100%. The persistence rate was 9.7% (10/103), and the overall adverse event rate was 2.9% (3/103) during a mean follow-up of 556 days (range: 181-3,542 days). In two cases, the persistence pattern confirmed by follow-up angiography involved reperfusion via adjacent pulmonary artery collaterals. The location of embolization relative to the last normal branch of the pulmonary artery was the only factor substantially affecting persistence. CONCLUSION Embolization with AVP4 appears to be safe and effective for small- to medium-sized PAVMs. The location of the embolization relative to the last normal branch of the pulmonary artery was found to be the main determinant of persistence. CLINICAL SIGNIFICANCE Given the increasing demand for the treatment of small PAVMs, AVP4 embolization could be considered a viable and effective option for managing PAVMs with feeding arteries <6 mm. | Cha, Jung Guen; Park, Jongmin; Park, Byunggeon; Park, Seo Young; Lee, So Mi; Hong, Jihoon | Kyungpook Natl Univ, Sch Med, Dept Radiol, Daegu, South Korea | 57206855971; 57216463879; 57211532915; 59815740700; 56824903400; 57215858314 | blushain@gmail.com; | DIAGNOSTIC AND INTERVENTIONAL RADIOLOGY | DIAGN INTERV RADIOL | 1305-3612 | 31 | 2 | SCIE | RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING | 2024 | 1.7 | 61.1 | 0 | 2025-05-07 | 0 | 0 | Arteriovenous malformation; computed tomography; embolization; pulmonary; vascular plug | EMBOLOTHERAPY; REPERFUSION; PERSISTENCE | Arteriovenous malformation; computed tomography; embolization; pulmonary; vascular plug | Adolescent; Adult; Aged; Arteriovenous Malformations; Embolization, Therapeutic; Female; Humans; Male; Middle Aged; Pulmonary Artery; Pulmonary Veins; Retrospective Studies; Septal Occluder Device; Tomography, X-Ray Computed; Treatment Outcome; Young Adult; anticoagulant agent; adult; aged; arteriovenous malformation; Article; artificial embolization; catheterization; clinical significance; cohort analysis; computer assisted tomography; digital subtraction angiography; electronic medical record; female; follow up; human; major clinical study; male; middle aged; multidetector computed tomography; multiplicity of infection; multivariate analysis; multivariate logistic regression analysis; physical examination; pulmonary arteriovenous fistula; retrospective study; treatment outcome; univariate analysis; adolescent; adverse event; arteriovenous malformation; artificial embolization; devices; diagnostic imaging; procedures; pulmonary artery; pulmonary vein; septal occluder; therapy; x-ray computed tomography; young adult | English | 2025 | 2025-03 | 10.4274/dir.2024.242732 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |||
| ○ | ○ | Article | A Conceptual Study of Rapidly Reconfigurable and Scalable Bidirectional Optical Neural Networks Leveraging a Smart Pixel Light Modulator | We explore the integration of smart pixel light modulators (SPLMs) into bidirectional optical neural networks (BONNs), highlighting their advantages over traditional spatial light modulators (SLMs). SPLMs enhance BONN performance by enabling faster light modulation in both directions, significantly increasing the refresh rate of neural network weights to hundreds of megahertz, thus facilitating the practical implementation of the backpropagation algorithm and two-mirror-like BONN structures. The architecture of an SPLM-based BONN (SPBONN) features bidirectional modulation, simplifying hardware with electrical fan-in and fan-out. An SPBONN with an array size of 96 x 96 can achieve high throughput, up to 4.3 x 1016 MAC/s with 10 layers. Energy assessments showed that the SPLM array, despite its higher power consumption compared to the SLM array, is manageable via effective heat dissipation. Smart pixels with programmable memory in the SPBONN provide a cost-effective solution for expanding network node size and overcoming scalability limitations without the need for additional hardware. | Ju, Young-Gu | Kyungpook Natl Univ, Dept Phys Educ, 80 Daehakro, Daegu 41566, South Korea | 59812801600 | ygju@knu.ac.kr; | PHOTONICS | PHOTONICS-BASEL | 2304-6732 | 12 | 2 | SCIE | OPTICS | 2024 | 1.9 | 61.2 | 4.31 | 2025-05-07 | 1 | 1 | optical neural network; free-space optics; optical computer; smart pixels | MODEL | free-space optics; optical computer; optical neural network; smart pixels | English | 2025 | 2025-02 | 10.3390/photonics12020132 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||||
| ○ | ○ | Article | Evaluating the Thermohydraulic Performance of Microchannel Gas Coolers: A Machine Learning Approach | In this study, a numerical model of a microchannel gas cooler was developed using a segment-by-segment approach for thermohydraulic performance evaluation. State-of-the-art heat transfer and pressure drop correlations were used to determine the air and refrigerant side heat transfer coefficients and friction factors. The developed model was validated against a wide range of experimental data and was found to accurately predict the gas cooler capacity (Q) and pressure drop (Delta P) within an acceptable margin of error. Furthermore, advanced machine learning algorithms such as extreme gradient boosting (XGB), random forest (RF), support vector regression (SVR), k-nearest neighbors (KNNs), and artificial neural networks (ANNs) were employed to analyze their predictive capability. Over 11,000 data points from the numerical model were used, with 80% of the data for training and 20% for testing. The evaluation metrics, such as the coefficient of determination (R2, 0.99841-0.99836) and mean squared error values (0.09918-0.10639), demonstrated high predictive efficacy and accuracy, with only slight variations among the models. All models accurately predict the Q, with the XGB and ANN models showing superior performance in Delta P prediction. Notably, the ANN model emerges as the most accurate method for refrigerant and air outlet temperatures predictions. These findings highlight the potential of machine learning as a robust tool for optimizing thermal system performance and guiding the design of energy-efficient heat exchange technologies. | Ishaque, Shehryar; Ullah, Naveed; Choi, Sanghun; Kim, Man-Hoe | Kyungpook Natl Univ, KNU Inst Engn Design Technol IEDT, Daegu 41566, South Korea; Kyungpook Natl Univ, Coll Engn, Sch Mech Engn, Daegu 41566, South Korea | 57212480549; 57217180260; 55847101000; 55686310000 | shehryarbangash1@gmail.com; naveedullah@knu.ac.kr; s-choi@knu.ac.kr; manhoe.kim@knu.ac.kr; | ENERGIES | ENERGIES | 1996-1073 | 18 | 12 | SCIE | ENERGY & FUELS | 2024 | 3.2 | 61.3 | 0 | 0 | thermohydraulic performance; gas cooler; machine learning; ANN; KNN; SVR | ANN; gas cooler; KNN; machine learning; SVR; thermohydraulic performance | Cooling systems; Drops; Forecasting; Friction; Learning systems; Mean square error; Nearest neighbor search; Neural networks; Numerical models; Pressure drop; Random forests; Refrigerants; Support vector regression; Artificial neural network modeling; Gas cooler; Machine learning approaches; Machine-learning; Micro-channel gas coolers; Nearest-neighbour; Neural-networks; Performances evaluation; Support vector regressions; Thermo-hydraulic performance; Microchannels | English | 2025 | 2025-06-06 | 10.3390/en18123007 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||||||
| ○ | ○ | Article | Experimental Evaluation of Hybrid Renewable and Thermal Energy Storage Systems for a Net-Zero Energy Greenhouse: A Case Study of Yeoju-Si | The implementation of renewable energy systems (RESs) in the agricultural sector has significant potential to mitigate the negative effects of fossil fuel-based products on the global climate, reduce operational costs, and enhance crop production. However, the intermittent nature of RESs poses a major challenge to realizing these benefits. To address this, thermal energy storage (TES) and hybrid heat pump (HHP) systems are integrated with RESs to balance the mismatch between thermal energy production and demand. In pursuit of clean energy solutions in the agricultural sector, a 3942 m2 greenhouse in Yeoju-si, South Korea, is equipped with 231 solar thermal (ST) collectors, 117 photovoltaic thermal (PVT) collectors, four HHPs, two ground-source heat pumps (GSHPs), a 28,500 m3 borehole TES (BTES) unit, a 1040 m3 tank TES (TTES) unit, and three short-term TES units with capacities of 150 m3, 30 m3, and 30 m3. This study evaluates the long-term performance of the integrated hybrid renewable energy and thermal energy storage systems (HRETESSs) in meeting the greenhouse's heating and cooling demands. Results indicate that the annual system performance efficiencies range from 25.3% to 68.5% for ST collectors and 31.9% to 72.2% for PVT collectors. The coefficient of performance (COP) during the heating season is 3.3 for GSHPs, 2.5 for HHPs using BTES as a source, and 3.6 for HHPs using TTES as a source. During the cooling season, the COP ranges from 5.3 to 5.7 for GSHPs and 1.84 to 2.83 for ASHPs. Notably, the HRETESS supplied 3.4% of its total heating energy directly from solar energy, 89.3% indirectly via heat pump utilization, and 7.3% is provided by auxiliary heating. This study provides valuable insights into the integration of HRETESSs to maximize greenhouse energy efficiency and supports the development of sustainable agricultural energy solutions, contributing to reduced greenhouse gas emissions and operational costs. | Adesanya, Misbaudeen Aderemi; Rabiu, Anis; Ogunlowo, Qazeem Opeyemi; Kim, Min-Hwi; Akpenpuun, Timothy Denen; Na, Wook-Ho; Grewal, Kuljeet Singh; Lee, Hyun-Woo | Univ Prince Edward Isl, Fac Sustainable Design Engn FSDE, Future Urban Energy Lab Sustainabil FUEL S, 550 Univ Ave, Charlottetown, PE C1A 4P3, Canada; Kyungpook Natl Univ, Coll Agr & Life Sci, Dept Agr Civil Engn, Daegu 41566, South Korea; Fed Coll Agr Ibadan, Dept Agr & Bioenvironm Engn, Ibadan, Nigeria; Korea Inst Energy Res, Renewable Thermal Convergence Lab, 152 Gajeong Ro, Daejeon 34129, South Korea; Univ Ilorin, Dept Agr & Biosyst Engn, Ilorin 240003, Nigeria | Adesanya, Misbaudeen/AAA-4664-2022; Grewal, Kuljeet/AAV-2494-2021; Kim, Min-Hwi/S-9817-2018; RABIU, Anis/JXO-1947-2024; OGUNLOWO, QAZEEM/ABB-5386-2021; Akpenpuun, Timothy/AAE-1168-2020 | 57264527200; 57264527100; 57265471800; 55541423800; 57194448083; 57211208368; 57207695743; 57209160180 | madesanya@upei.ca; rabiuanis@knu.ac.kr; ogunlowoqazeem@knu.ac.kr; mhkim001@kier.re.kr; akpenpuun.td@unilorin.edu.ng; wooks121@knu.ac.kr; kgrewal@upei.ca; whlee@knu.ac.kr; | ENERGIES | ENERGIES | 1996-1073 | 18 | 10 | SCIE | ENERGY & FUELS | 2024 | 3.2 | 61.3 | 0 | 2025-06-11 | 0 | 0 | net-zero energy greenhouse; hybrid renewable energy; tank thermal energy storage; borehole thermal energy storage; heat pumps; COP; greenhouse energy efficiency | SOLAR; PERFORMANCE | borehole thermal energy storage; COP; greenhouse energy efficiency; heat pumps; hybrid renewable energy; net-zero energy greenhouse; tank thermal energy storage | Seed; Solar heating; Borehole thermal energy storage; Coefficient of Performance; Greenhouse energy; Greenhouse energy efficiency; Heat pumps; Hybrid renewable energies; Net-zero energy greenhouse; Tank thermal energy storage; Thermal energy storage; Zero energies; Solar fuels | English | 2025 | 2025-05-20 | 10.3390/en18102635 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | Frequency Scanning-Based Dynamic Model Parameter Estimation: Case Study on STATCOM | The integration of power electronic equipment with complex internal structures, which are represented by switching elements or black-box models, is increasing because of the growing penetration of renewable energy into the power grid. The increase in model complexity causes greater computational workload and presents challenges for grid stability analysis. To address this issue, this paper proposes a method for estimating the parameters of a simple generic model capable of emulating the dynamic behavior of complex power-electronic models. For the estimation, the frequency scanning method is utilized, involving the injection of various frequency inputs into the complex model. The responses obtained are then utilized in the optimization process as the objective function. The use of frequency scanning is reasonable because it can cover a wide frequency range, thus comprehensively capturing the dynamic properties of the model. The optimization process aims to minimize the difference in responses to frequency scanning between the complicated and simple generic models. The accuracy of the generic model with estimated parameters is verified by Bode plot comparison and time-domain simulations. Simulation results demonstrated that the generic model, optimized via parameter estimation using the frequency scanning method, accurately replicated the response of the reference model, particularly in the low-frequency range. The proposed method allows for the integration of power electronic equipment, which may represent switching-based components or lack internal information, into stability analysis using existing power-system analysis tools. | Jo, Hyeongjun; Lee, Juseong; Kim, Soobae | Kyungpook Natl Univ, Sch Elect & Elect Engn, Dept Elect Engn, Daegu 41566, South Korea | 59710484300; 58374423900; 55377374400 | hjun548@knu.ac.kr; wntjd9802@knu.ac.kr; soobae.kim@knu.ac.kr; | ENERGIES | ENERGIES | 1996-1073 | 18 | 6 | SCIE | ENERGY & FUELS | 2024 | 3.2 | 61.3 | 0 | 2025-05-07 | 0 | 0 | dynamic response equivalent; parameter estimation; frequency scanning; small signal analysis | dynamic response equivalent; frequency scanning; parameter estimation; small signal analysis | Compandor circuits; Frequency estimation; Dynamic response equivalent; Frequency scanning; Generic modeling; Optimisations; Parameters estimation; Power electronic equipment; Scanning methods; Simple++; Small-signal analysis; Stability analyze; Bode diagrams | English | 2025 | 2025-03-07 | 10.3390/en18061326 | 바로가기 | 바로가기 | 바로가기 | 바로가기 |
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