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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 | Personalized federated learning on NLOS acoustic signal classification | To identify non-line-of-sight, acoustics-based indoor positioning needs to collect audio recordings of sound fields in multiple rooms and upload them to the central server for training. However, if the transmission process or the server-side suffers from malicious attacks, private data may be leaked. To address both training difficulties and privacy issues simultaneously, a novel model for personalized federated learning is proposed. This model incorporates user frequency and room data capacity while also taking into account significant differences in positioning data and room layout. The proposed model can accurately identify differences between various room data during aggregation on the server-side. By collecting data in actual indoor environments and comparing it with existing algorithms, the proposed method achieved 90% accuracy in verifying data for unfamiliar rooms. | Wang, Hucheng; Qiu, Suo; Wang, Jingjing; Zhang, Lei; Wang, Zhi; Luo, Xiaonan | Guilin Univ Elect Technol, Sch Comp Sci & Informat Secur, Guilin, Guangxi, Peoples R China; Zhejiang Univ, Coll Control Sci & Engn, Hangzhou, Zhejiang, Peoples R China; Kyungpook Natl Univ, Elect & Elect Engn, Daegu, South Korea; Changan Univ, Sch Construct Machinery, Xian, Shannxi, Peoples R China | Zhang, Lei/GMX-0400-2022; Wang, Jingjing/GLT-7562-2022 | 57204791482; 57973400800; 57202161515; 57203347274; 8604221900; 57216369979 | alklv5281609@gmail.com; | ELECTRONICS LETTERS | ELECTRON LETT | 0013-5194 | 1350-911X | 59 | 8 | SCIE | ENGINEERING, ELECTRICAL & ELECTRONIC | 2023 | 0.7 | 87.4 | 0 | 2025-06-25 | 0 | 0 | indoor navigation; learning (artificial intelligence) | indoor navigation; learning (artificial intelligence) | Audio acoustics; Indoor positioning systems; Acoustic signals; Central servers; Indoor navigation; Indoor positioning; Learning (artificial intelligence); Malicious attack; Nonline of sight; Private data; Server sides; Signal classification; Acoustic fields | English | 2023 | 2023-04 | 10.1049/ell2.12790 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | White Light Emission and Judd-Ofelt Analysis of Dy³⁺ Doped Mixed Alkali Borate Glass for W-LEDs Material | The Dy3+ doped lithium sodium potassium borate glasses with white light-emitting were prepared by the melt quenching technique. In this work, optical, photoluminescence properties and Judd-Ofelt analysis of borate glasses have been investigated. For optical properties, Dy3+ doped glasses showed the absorption in visible and near-infrared region, which originate from H-6(15/2) ground state to higher state. While the luminescence properties of Dy3+ doped glasses, the emission spectra were presented more intense at 484 nm (blue light) and 574 nm (yellow light) which are essential for white light emitting materials, whilst decay time decrease with an increase of Dy2O3 contents. The emission intensity of Dy3+ doped glasses were enhanced by adding Dy2O3 concentrations until 0.5 mol%, after that the emission intensities were decreased due to the concentration quenching effect. Judd-Ofelt is analyzed by using the absorption and photoluminescence results, The stimulated emission cross-section has been investigated in this work. The CIE 1931 chromaticity investigation shows that Dy3+ doped glass emitted light with white color. Hence, these glasses may be suitable candidates for use in W-LEDs material. | Jarucha, Nawarut; Ruangtaweep, Yotsakit; Nawarat, Poomirat; Kanthang, Paisan; Limsuwan, Pichet; Kim, Hong Joo; Kaewkhao, Jakrapong; Sareein, Thanapong | Nakhon Pathom Rajabhat Univ, Fac Sci & Technol, Phys Program, Nakhon Pathom, Thailand; Nakhon Pathom Rajabhat Univ, Ctr Excellence Glass Technol & Mat Sci CEGM, Nakhon Pathom, Thailand; Rajamangala Univ Technol Phra Nakhon, Fac Sci & Technol, Div Ind Mat Sci, Bangkok, Thailand; Rajamangala Univ Technol Phra Nakhon, Fac Sci & Technol, Div Sci, Bangkok, Thailand; King Mongkuts Inst Technol Ladkrabang, Fac Sci, Dept Phys, Bangkok, Thailand; Kyungpook Natl Univ, Dept Phys, Daegu, South Korea | Sareein, Thanapong/AAB-2979-2022; Kim, Hong Joo/AAE-1178-2022; Kanthang, Paisan/H-4673-2011 | 57219215647; 37108588700; 57209746897; 56784277200; 35253717100; 59051568100; 23974520300; 25822754600 | thanapong.s@rmutp.ac.th; | INTEGRATED FERROELECTRICS | INTEGR FERROELECTR | 1058-4587 | 1607-8489 | 239 | 1 | SCIE | ENGINEERING, ELECTRICAL & ELECTRONIC;PHYSICS, APPLIED;PHYSICS, CONDENSED MATTER | 2023 | 0.7 | 87.4 | 0.12 | 2025-06-25 | 1 | 1 | Alkali borate glass; dysprosium; Judd-Ofelt; white light emission | LUMINESCENCE PROPERTIES; IONS | Alkali borate glass; dysprosium; Judd-Ofelt; white light emission | Dysprosium; Emission spectroscopy; Glass; Ground state; Infrared devices; Light emitting diodes; Lithium compounds; Optical properties; Photoluminescence; Potassium compounds; Quenching; Alkali borate glass; Doped glass; Emissions intensity; Judd-Ofelt; Judd-ofelt analysis; LED materials; Melt quenching techniques; Mixed alkali borate glass; White light emission; White light-emitting; Dysprosium compounds | English | 2023 | 2023-11-22 | 10.1080/10584587.2023.2234618 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |
| ○ | ○ | Review | A Review on the Stratigraphy, Depositional Period, and Basin Evolution of the Bansong Group | The Mesozoic Bansong Group, distributed along the NE-SW thrust fault zone of the Okcheon Fold Belt in the Danyang-Yeongwol-Jeongseon areas, contains important information on the two Mosozoic orogenic cycles in the Koran Peninsula, the Permian-Triassic Songrim Orogeny and the Jurassic Daebo Orogeny. This study aims to review previous studies on the stratigraphy, depositional period, and basin evolution of the Bansong Group and to suggest future research directions. The perspective on the implication of the Bansong Group in the context of the tectonic evolution of the Korean Peninsula is largely divided into two points of view. The traditional view assumes that it was deposited as a product of the post-collisional Songrim Orogeny and then subsequently deformed by the Daebo Orogeny. This interpretation is based on the stratigraphic, paleontologic, and structural geologic research carried out in the Danyang Coalfield area. On the other hand, recent research regards the Bansong Group as a product of syn-orogenic sedimentation during the Daebo Orogeny. This alternative view is based on the zircon U-Pb ages of pyroclastic rocks distributed in the Yeongwol area and their structural position. However, both models cannot comprehensively explain the paleontological and geochronological data derived from Bansong Group sediments. This suggests the need for a new basin evolution model integrated from multidisciplinary data obtained through sedimentology, structural geology, geochronology, petrology, and geochemistry studies. | Choi, Younggi; Park, Seung-Ik; Choi, Taejin | Korea Mine Rehabil & Mineral Resources Corp, Overseas Explorat Team, Wonju 26464, South Korea; Kyungpook Natl Univ, Sch Earth Syst Sci, Dept Geol, Daegu 41566, South Korea; Korea Natl Univ Educ, Dept Earth Sci Educ, Cheongju 28173, South Korea | Choi, Taejin/KHU-0729-2024 | 57797282800; 55832472000; 34975182800 | tchoi@knue.ac.kr; | ECONOMIC AND ENVIRONMENTAL GEOLOGY | ECON ENVIRON GEOL | 1225-7281 | 2288-7962 | 56 | 4 | ESCI | GEOLOGY | 2023 | 0.4 | 87.7 | 0 | 2025-06-25 | 0 | 0 | Bansong Group; basin evolution; orogenic cycle; Songrim Orogeny; Daebo Orogeny | KOREAN PENINSULA; GONGSUWON THRUST; TAEBAEKSAN BASIN; BELT; ZONE; AGE | Bansong Group; basin evolution; Daebo Orogeny; orogenic cycle; Songrim Orogeny | English | 2023 | 2023-08 | 10.9719/eeg.2023.56.4.385 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | A Study on the Precipitation Mechanism of Quartz Veins from Sangdong Deposit by Analyses of Vein Texture and Trace Element in Quartz | Sangdong deposit, a W-Mo skarn deposit, is located in Taebaeksan mineralized district, hosting vertically developed scheelite-quartz veins that formed at the late ore-forming stage. In this study, we tried to examine the geochemical signatures of ore-forming fluids and vein-forming mechanisms by analyzing the micro-texture of quartz veins and trace element concentrations of quartz. As a result of texture analyses, quartz veins in the hanging wall orebody and the foot wall orebody commonly exhibit the blocky and the elongate blocky texture, respectively, whereas quartz veins in the main orebody show both textures. These textural differences indicate that quartz veins from the hanging wall orebody were precipitated by the primary hydrofracturing due to H2O saturation in the igneous body with relatively high temperature and pressure at a vein-skarn stage, and after that, repeated hydrofracturing caused the formation of quartz veins from the main orebody and foot wall orebody. The results of trace element concentrations show that Li++Al3+& LRARR;Si4+ is a main substitution mechanism. However, those of the foot wall orebody were clearly divided into a Li+-dominated substitution and a Na+-, K+-dominated substitution. Considering that quartz veins from the foot wall orebody commonly show the elongate blocky texture, such a distinction means that it is a result of repeated injections of fluid with the different composition. Ti concentrations of quartz from the hanging wall, main, and the foot wall orebody are 28.6, 8.2, and 15.7 ppm in average, respectively. Given a proportional relationship between the precipitation temperature and Ti concentrations, it seems that quartz veins from the hanging wall orebody were precipitated at the highest temperature. Al concentrations of the hanging wall, main, and the foot wall orebody having an inverse relationship with fluid pH are 162.3, 114.2, and 182.5 ppm in average, respectively. These results show that Al concentrations in vein-forming fluids were not changed dramatically. Moreover, these concentrations are extremely low in comparison with the other hydrothermal deposits. This indicates that quartz in overall ore veins at Sangdong deposit was precipitated from the constant condition with slightly acidic to near neutral pH. | Lee, Youseong; Park, Changyun; Kim, Yeongkyoo | Kyungpook Natl Univ, Dept Geol, Daegu 41566, South Korea | 58535828100; 56197393100; 7410207179 | changyun.park@knu.ac.kr; | ECONOMIC AND ENVIRONMENTAL GEOLOGY | ECON ENVIRON GEOL | 1225-7281 | 2288-7962 | 56 | 3 | ESCI | GEOLOGY | 2023 | 0.4 | 87.7 | 0 | 2025-06-25 | 0 | 0 | Sangdong W-Mo deposit; vein; quartz; trace element; LA-ICPMS | FLUID-FLOW; HYDROTHERMAL QUARTZ; EVOLUTION; TITANIQ; SYSTEM; INCLUSIONS; INSIGHTS; GROWTH; KOREA | LA-ICPMS; quartz; Sangdong W-Mo deposit; trace element; vein | English | 2023 | 2023-06 | 10.9719/eeg.2023.56.3.239 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |||
| ○ | ○ | Article | Adsorption Characteristics of Oxyanions on Ferrihydrite and Mineral Phase Transformation | Ferrihydrite is an iron oxide mineral that is easily found in the natural environment, including acid mine drainage, and has a low crystallinity and high specific surface area, resulting in high reactivity with other ions, and can remove environmentally hazardous substances. However, because ferrihydrite is a metastable mineral, there is a possibility of releasing adsorbed ions by phase transformation to other minerals having low surface area and high crystallinity. In this study, the adsorption characteristics of arsenate, chromate, and selenate on ferrihydrite and the oxyanion removal efficiency of ferrihydrite were studied considering mineral phase transformation. At both pH 4 and 8, the adsorption of oxyanions used in the study were in good agreement with both Langmuir and Freundlich adsorption models except for selenate at pH 8. Due to the difference in surface charge according to pH, at pH 4 a higher amount of ions were adsorbed than at pH 8. The adsorption amount were in the order of arsenate, chromate, and selenate. These different adsorption models and adsorption amounts were due to different adsorption mechanisms for each oxyanions on the surface of ferrihydrite. These adsorption characteristics were closely related to changes in the mineral phase. At pH 4, a phase transformation to goethite or hematite was observed, but only a phase transformation to hematite was observed at pH 8. Among the oxyanion species on ferrihydrite, arsenate showed the highest adsorption capacity and hardly caused phase transformation during the experimental period after adsorption. Contrary to this, chromate and selenate showed faster mineral phase transformation than arsenate, and selenate had the lowest retardation effect among the three oxyanions. Ferrihydrite can effectively remove arsenate due to its high adsorption capacity and low phase transformation rate. However, the removal efficiency for other two oxyanions were low by the low adsorption amount and additional mineral phase transformation. For chromate, the efficient removal is expected only at low concentrations in low pH environments. | Kim, Gyure; Kim, Yeongkyoo | Kyungpook Natl Univ, Sch Earth Syst Sci, Daegu 41566, South Korea | 58533139100; 7410207179 | ygkim@knu.ac.kr; | ECONOMIC AND ENVIRONMENTAL GEOLOGY | ECON ENVIRON GEOL | 1225-7281 | 2288-7962 | 56 | 3 | ESCI | GEOLOGY | 2023 | 0.4 | 87.7 | 0 | 2025-06-25 | 0 | 0 | ferrihydrite; oxyanion; adsorption mechanism; phase transformation; goethite | 2-LINE FERRIHYDRITE; SELENATE ADSORPTION; SURFACE-CHEMISTRY; ADSORBED ARSENATE; HEMATITE; GOETHITE; LEPIDOCROCITE; MECHANISMS; PHOSPHATE; CHROMATE | adsorption mechanism; ferrihydrite; goethite; oxyanion; phase transformation | English | 2023 | 2023-06 | 10.9719/eeg.2023.56.3.301 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |||
| ○ | ○ | Article | Application of RTI to Improve Image Clarity of a Trace Fossil Cochlichnus Found from the Jinju and Haman Formations | A total of 64 specimens of trace fossils were collected from the Jinju Formation of the construction site of Jinju Aviation Industrial Complex, and from the Haman Formation of Namhae Gain-ri fossil site. The fossils are continuously and regularly meandering sine -curve in shape. The fossil varies in morphology: width between 0.2 and 5.6 mm, wavelength between 1.5 and 28 mm, and amplitude between 0.9 and 7.9 mm; the Jinju specimens are commonly wider than the Haman ones. The ratio of wavelength to amplitude is more or less regular regardless of width of the specimen, and the linear correlation of the ratios shows that the Jinju specimens fit better than the Haman specimens. Taking all morphometric parameters, specimens in all size ranges are temporarily identified as ichnospecies Cochlichnus anguineus. In order to obtain more distinct and clearer images of Cochlichnus, we selected two specimens and applied a new imaging technology RTI. For photography of the trace fossils, 50 to 80 images were taken per set with photometric lighting close to the surface and horizontally. RTI technology clearly showed that the images of tiny fossils were improved: the surface contrast become sharper and messy and unnecessary information disappeared. Currently, RTI technology is used in many fields including preservation of cultural properties and archaeology. As a consequence, we hope to apply this technique to the field of paleontology, especially to the study of trace fossils of very small size. | Won, Sangho; Kong, Dal-Yong | Jinju Pterosaur Tracks Museum, Jinju 52857, South Korea; Natl Res Inst Maritime Cultural Heritage, Taean 3212, South Korea; Kyungpook Natl Univ, Sch Earth Syst Sci, Daegu 41566, South Korea | Kong, Dal-Yong/KHW-8440-2024 | 58601294900; 59032511700 | kong.dalyong@daum.net; | ECONOMIC AND ENVIRONMENTAL GEOLOGY | ECON ENVIRON GEOL | 1225-7281 | 2288-7962 | 56 | 4 | ESCI | GEOLOGY | 2023 | 0.4 | 87.7 | 0 | 2025-06-25 | 0 | 0 | Jinju Formation; Haman Formation; RTI (Reflectance Transformation Imaging); trace fossils; Cochlichnus | OLDEST RECORD; SOUTH-KOREA; DEPOSITS; COAST; SEA | Cochlichnus; Haman Formation; Jinju Formation; RTI (Reflectance Transformation Imaging); trace fossils | English | 2023 | 2023-08 | 10.9719/eeg.2023.56.4.397 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | Contaminant Mechanism and Management of Tracksite of Pterosaurs, Birds, and Dinosaurs in Chungmugong-dong, Jinju, Korea | Tracksite of pterosaurs, birds, and dinosaurs in Chungmugong-dong in Jinju was designated as a natural monument in 2011 and is known as the world's largest in terms of the number and density of pterosaur footprints. This site has been managed by installing protection buildings to conserve in 2018. About 17% of the footprints of pterosaur, theropod, and ornithopod in this site under management in the 2nd protection building are of great academic value, but observation of footprints has difficulties due to continuous physical and chemical damage. In particular, the accumulation of milk-white contaminants is formed by the gypsum and air pollutant complex. Gypsum remains evaporated with a plate or columnar shape in the process of water circulation around the 2nd protection building, and the dust is from through the inflow of the gallery windows. The aqueous solution of gypsum, consisting of calcium from the lower bed and sulfur from grass growth, is catchmented into the groundwater from the area behind the protection building. Pollen and a few minerals other constituents of contaminants, go through the gallery window, which makes it difficult to expel dust. To conserve the fossil-bearing beds from two contaminants of different origins, controlling the water and atmospheric circulation of the 2nd protection building and removing the contaminants continuously is necessary. When cleaning contaminants, the steam cleaning method is sufficiently effective for powder-shaped milk-white contaminants. The fossil-bearing bed consists of dark gray shale with high laser absorption power; the laser cleaning method accompanies physical loss to fossils and sedimentary structures; therefore, avoiding it as much as possible is desirable. | Choie, Myoungju; Won, Sangho; Lee, Tea Jong; Lee, Seong-Joo; Kong, Dal-Yong; Lee, Myeong Seong | Natl Res Inst Cultural Heritage, Conservat Sci Div, Daejeon 34122, South Korea; Jinju Pterosaur Tracks Museum, Jinju 52857, Jinju, South Korea; Natl Res Inst Cultural Heritage, Conservat Sci Ctr, Daejeon 32432, South Korea; Kyungpook Natl Univ, Dept Geol, Daegu 41566, South Korea; Natl Res Inst Maritime Cultural Heritage, West Sea Cultural Heritage Div, Taean 32132, South Korea | Kong, Dal-Yong/KHW-8440-2024 | 57223896658; 58601294900; 58857111900; 48961279800; 59032511700; 57221697546 | mslee75@korea.kr; | ECONOMIC AND ENVIRONMENTAL GEOLOGY | ECON ENVIRON GEOL | 1225-7281 | 2288-7962 | 56 | 6 | ESCI | GEOLOGY | 2023 | 0.4 | 87.7 | 0 | 2025-06-25 | 0 | 0 | tracksite; protection building; evaporite; contamination source tracking; contaminant cleaning | EFFLORESCENCE; CONSERVATION | contaminant cleaning; contamination source tracking; evaporite; protection building; tracksite | Korean | 2023 | 2023-12 | 10.9719/eeg.2023.56.6.715 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | Geological Factor Analysis for Evaluating the Long-term Safety Performance of Natural Barriers in Deep Geological Repository System of High-level Radioactive Waste | In this study, an investigation was conducted on the features, events, and processes (FEP) that could impact the long-term safety of the natural barriers constituting high-level radioactive waste geological repositories. The FEP list was developed utilizing the IFEP list 3.0 provided by the Nuclear Energy Agency (NEA) as foundational data, supplemented by geological investigations and research findings from leading countries in this field. A total of 49 FEPs related to the performance of the natural barrier were identified. For each FEP, detailed definitions, classifications, impacts on long-term safety, significance in domestic conditions, and feasibility of quantification were provided. Moreover, based on the compiled FEP list, three scenarios that could affect the long-term safety of the disposal facility were developed. Geological factors affecting the performance of the natural barrier in each scenario were selected and their relationships were visualized. The constructed FEP list and the visualization of interrelated factors in various scenarios are anticipated to provide essential information for selecting and organizing factors that must be considered in the development of mathematical models for quantitatively evaluating the long-term safety of deep geological repositories. In addition, these findings could be effectively utilized in establishing criteria related to the key performance of natural barriers for the confirmation of repository sites. | Lee, Hyeongmok; Jeong, Jiho; Park, Jaesung; Lee, Subi; So, Suwan; Jeong, Jina | Kyungpook Natl Univ, Dept Geol, Daegu, South Korea | 58306661200; 57218684286; 57226611192; 58751964200; 58752671400; 55488558800 | jeong.j@knu.ac.kr; | ECONOMIC AND ENVIRONMENTAL GEOLOGY | ECON ENVIRON GEOL | 1225-7281 | 2288-7962 | 56 | 5 | ESCI | GEOLOGY | 2023 | 0.4 | 87.7 | 0.19 | 2025-06-25 | 1 | 1 | high-level radioactive waste; deep geological repository facility; natural barrier; FEP; long-term safety | DISPOSAL | deep geological repository facility; FEP; high-level radioactive waste; long-term safety; natural barrier | English | 2023 | 2023-10 | 10.9719/eeg.2023.56.5.533 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |||
| ○ | Review | Groundwater and Soil Pollution Caused by Forest Fires, and Its Effects on the Distribution and Transport of Radionuclides in Subsurface Environments: Review | Forest fires can generate numerous pollutants through the combustion of vegetation and cause serious environmental problems. The global warming and climate change will increase the frequency and scale of forest fires across the world. In Korea, many nuclear power plants (NPPs) are located in the East Coast where large-scale forest fires frequently occur. Therefore, understanding the sorption and transport characteristics of radionuclides in the forest fire areas is required against the severe accidents in NPPs. This article reviewed the physiochemical changes and contamination of groundwater and soil environments after forest fires, and discussed sorption and transport of radionuclides in the subsurface environment of burned forest area. We considered the geochemical factors of subsurface environment changed by forest fire. Moreover, we highlighted the need for studies on changes and contamination of subsurface environments caused by forest fires to understand more specific mechanisms. © 2023 Korean Society of Economic and Environmental Geology. All rights reserved. | Bae, Hyojin; Choung, Sungwook; Oh, Jungsun; Jeong, Jina | Research Center for Geochronology and Isotope Analysis, Korea Basic Science Institute (KBSI), Cheongju, 28119, South Korea; Research Center for Geochronology and Isotope Analysis, Korea Basic Science Institute (KBSI), Cheongju, 28119, South Korea; Department of Hydro Science and Engineering Research, Korea Institute of Civil Engineering and Building Technology (KICT), Goyang, 10223, South Korea; Department of Geology, Kyungpook National University (KNU), Daegu, 41566, South Korea | 58740783000; 36436826400; 57768824100; 55488558800 | schoung@kbsi.re.kr; | Economic and Environmental Geology | ECON ENVIRON GEOL | 1225-7281 | 2288-7962 | 56 | 5 | ESCI | GEOLOGY | 2023 | 0.4 | 87.7 | 0.08 | 2025-06-25 | 1 | environmental contamination; forest fire; radionuclide; subsurface environment; transport | Korean | Final | 2023 | 10.9719/eeg.2023.56.5.501 | 바로가기 | 바로가기 | 바로가기 | ||||||||
| ○ | Article | Phytochemical Screening, Free-Radical Scavenging Activity, in vitro Alpha-Amylase Inhibitory Activity, and in vivo Hypoglycemic Activity Studies of Several Crude Drug Formulations Based on Selected Medicinal Plants of Nepal | Diabetes mellitus (DM) is a chronic metabolic disorder leading toward elevation of the blood glucose level due to insulin insufficiency (Type I) or insulin resistance of responsible tissues (Type II). Aside from allopathic medicine, herbal therapy using crude and extracted forms is drawing the interest of many researchers for its hypoglycemic effect. Therefore, this study was designed by selecting eight local medicinal plants – Azadirachta indica, Gymnema Sylvestre, Swertia chiraita, Cinnamomum tamala, Psidium guajava, Aegle marmelos, Urtica dioica and Momordica charantia – which have a long history of being utilized for glucose-lowering property to provide the experimental and scientific evidence of their antidiabetic efficacy. Among the four formulations prepared, tetra-herbal formulations F3 and F4 were found to have the highest total phenolic content (TPC) of 223.38 ± 0.25 μg GAE/mg plant extract and 220.24 ± 0.89 μg GAE/mg plant extract, respectively. At the same time, the total flavonoid content (TFC) study also revealed that F3 and F4 have the highest TFC of 282.29 ± 0.54 and 255.24 ± 0.37 μg QE/mg extract, respectively. Furthermore, antioxidant activity study showed that F3 and F4 showed potent DPPH free-radical scavenging effect with IC50 values of 12.22 and 15.24 μg/mL, respectively. Continuing the experiment, it was established that the results of quantitative phytochemical screening and antioxidant activity study coincide with the in vivo and in vitro antihyperglycemic activity assay. Formulation F3 showed the potent alpha-amylase inhibition with an IC50 value of 43.75 mg/mL, and the in vivo glucose-lowering efficacy of F3 showed its ability of markedly reducing the blood glucose level up to 130.2 ± 2.03 mg/dL within 21 days. With these findings, the present study provides evidence-based experimental and scientific basis for using these selected medicinal plants as high hypoglycemic activity agents. © 2023, Springer Science+Business Media, LLC, part of Springer Nature. | Giri, Bhupendra Raj; Baral, Rishiram; Bhatt, Hemant; Khadka, Aashish; Tamrakar, Rojina; Timalsina, Ganga; Gyawali, Rajendra | Department of Pharmacy, School of Science, Kathmandu University, Dhulikhel, Nepal, College of Pharmacy and Research Institute of Pharmaceutical Sciences, Kyungpook National University, Daegu, South Korea; College of Pharmacy and Research Institute of Pharmaceutical Sciences, Kyungpook National University, Daegu, South Korea; Department of Pharmacy, School of Science, Kathmandu University, Dhulikhel, Nepal; Department of Pharmacy, School of Science, Kathmandu University, Dhulikhel, Nepal; Department of Pharmacy, School of Science, Kathmandu University, Dhulikhel, Nepal; Department of Pharmacy, School of Science, Kathmandu University, Dhulikhel, Nepal; Department of Pharmacy, School of Science, Kathmandu University, Dhulikhel, Nepal | 57210211620; 57428055000; 58067115100; 58067115200; 58066161300; 58066957900; 9434415900 | ragyawali@gmail.com; | Pharmaceutical Chemistry Journal | PHARM CHEM J+ | 0091-150X | 1573-9031 | 56 | 10 | SCIE | CHEMISTRY, MEDICINAL;PHARMACOLOGY & PHARMACY | 2023 | 0.8 | 87.7 | 2.11 | 2025-06-25 | 12 | alpha-amylase; antioxidant activity; diabetes mellitus; in vivo hypoglycemic effect; total flavonoid content; total phenolic content | alkaloid; amylase; distilled water; flavonoid; gallic acid; glibenclamide; glucose; glycoside; herbaceous agent; quercetin; tannin derivative; terpenoid; adult; Aegle marmelos; animal tissue; antidiabetic activity; antioxidant activity; Article; Azadirachta indica; Cinnamomum tamala; controlled study; DPPH radical scavenging assay; enzyme inhibition; female; free radical scavenging assay; glucose blood level; guava; Gymnema sylvestre; in vitro study; in vivo study; male; medicinal plant; Momordica charantia; mouse; Nepal; nonhuman; phytochemistry; qualitative analysis; quantitative analysis; Swertia chirayita; toxicity assay; Urtica dioica | English | Final | 2023 | 10.1007/s11094-023-02799-z | 바로가기 | 바로가기 | 바로가기 | |||||||
| ○ | ○ | Review | The Shape Preferred Orientation (SPO) Analysis in Estimation of Fault Activity Study | The Shape Preferred Orientation (SPO) method has been used to analyze the orientation of fault motion, which is utilized as basic data for fault kinematics studies. The rigid grains, which as quartz, feldspar, and rock fragments, in the fault gouge are arranged in the P shear direction through rigid body rotation by a given shear stress. Using this characteristic, the fault motion can be estimated from the SPO inversely. Recently, a method for securing precision and reliability by measuring 3D-SPO using X-ray CT images and examining the shape of a large number of particles in a short time has been developed. As a result, the SPO method analyzes the orientation of thousands to tens of thousands of particles at high speed, suggests the direction of fault motion, and provides easy accessibility and reliable data. In addition, the shape information and orientation distribution data of particles, which are by-products obtained in the SPO analysis process, are expected to be used as basic data for conducting various studies such as the local deformation of fault rocks and the fault generation mechanism. | Sim, Ho; Song, Yungoo; Park, Changyun; Seo, Jaewon | Yonsei Univ, Dept Earth Syst Sci, Seoul 120749, South Korea; Kyungpook Natl Univ, Dept Geol, Daegu 702701, South Korea | 57195558580; 7404920759; 56197393100; 57822168900 | yungoo@yonsei.ac.kr; | ECONOMIC AND ENVIRONMENTAL GEOLOGY | ECON ENVIRON GEOL | 1225-7281 | 2288-7962 | 56 | 3 | ESCI | GEOLOGY | 2023 | 0.4 | 87.7 | 0 | 2025-06-25 | 0 | 0 | Shape Preferred Orientation (SPO); fault gouge; X-ray CT; estimation of fault activation; rigid body rotation | SYNCHROTRON MU-CT; RIGID PARTICLES; DEFORMATION; SENSE; ROCK; SLICKENSIDES; MATRIX | estimation of fault activation; fault gouge; rigid body rotation; Shape Preferred Orientation (SPO); X-ray CT | English | 2023 | 2023-06 | 10.9719/eeg.2023.56.3.293 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |||
| ○ | Article | Set-theoretic Yang-Baxter (co)homology theory of involutive non-degenerate solutions | W. Rump showed that there exists a one-to-one correspondence between involutive right non-degenerate solutions of the Yang-Baxter equation and cycle sets. J. S. Carter, M. Elhamdadi, and M. Saito, meanwhile, introduced a homology theory of set-theoretic solutions of the Yang-Baxter equation in order to define cocycle invariants of classical knots. In this paper, we introduce the normalized homology theory of an involutive right non-degenerate solution of the Yang-Baxter equation and compute the normalized set-theoretic Yang-Baxter homology of cyclic racks. Moreover, we explicitly calculate some two-cocycles, which can be used to classify certain families of torus links. © 2023 World Scientific Publishing Company. | Przytycki, Józef H.; Vojtěchovský, Petr; Yang, Seung Yeop | Department of Mathematics, The George Washington University, Washington, 20052, DC, United States, University of Gdańsk, Gdańsk, Poland; Department of Mathematics, University of Denver, 2390 South York Street, Denver, 80208, CO, United States; Department of Mathematics, Kyungpook National University, Daegu, 41566, South Korea | 6701336362; 57208794773; 56589212300 | seungyeop.yang@knu.ac.kr; | Journal of Knot Theory and its Ramifications | J KNOT THEOR RAMIF | 0218-2165 | 1793-6527 | SCIE | MATHEMATICS | 2023 | 0.3 | 88.1 | 0 | 2025-06-25 | 0 | cycle set; normalized Yang-Baxter (co)homology theory; Set-theoretical solution of Yang-Baxter equation | English | Article in press | 2023 | 10.1142/s0218216523400217 | 바로가기 | 바로가기 | 바로가기 | ||||||||||
| ○ | Article | Computed tomography and magnetic resonance imaging of maxillofacial rhabdomyosarcoma and suspected multiple metastases including the epidural space and bone marrow in a dog | A 3-year-old mixed-breed dog presenting with a recurrent maxillofacial tumor was diagnosed with recurrent rhabdomyosarcoma. Computed tomography and magnetic resonance imaging revealed a left maxillofacial mass, left cervical lymph node enlargement, epidural mass dorsal to the 6th lumbar vertebra compressing the cauda equina, soft-tissue mass ventral to the 6th lumbar vertebra, multiple subcutaneous nodules and signal changes in the paravertebral muscles. The left maxilla, lumbar spine and ilium exhibited diffuse signal changes and contrast enhancement upon magnetic resonance imaging. This is, to our knowledge, the first reported case of bone marrow and epidural-space involvement of a canine rhabdomyosarcoma. © 2023 Chulalongkorn University Printing House. All rights reserved. | Lee, Sang-Kwon; Bae, Seulgi; Jang, Min; Lee, Kija | Department of Veterinary Medical Imaging, College of Veterinary Medicine, Kyungpook National University, Daegu, 41566, South Korea; Department of Veterinary Internal Medicine, College of Veterinary Medicine, Kyungpook National University, Daegu, 41566, South Korea; Department of Veterinary Surgery, College of Veterinary Medicine, Kyungpook National University, Daegu, 41566, South Korea; Department of Veterinary Medical Imaging, College of Veterinary Medicine, Kyungpook National University, Daegu, 41566, South Korea | 59510683500; 59461572500; 59510648800; 35311016000 | leekj@knu.ac.kr; | Thai Journal of Veterinary Medicine | THAI J VET MED | 0125-6491 | 0125-6491 | 53 | 2 | SCIE | VETERINARY SCIENCES | 2023 | 0.3 | 88.3 | 0 | 2025-06-25 | 0 | bone marrow infiltration; canine; juvenile; soft tissue sarcoma; spine | bonorex; butorphanol; iohexol; isoflurane; midazolam; oxygen; propofol; animal experiment; animal model; animal tissue; Article; bone marrow; computer assisted tomography; diagnostic procedure; diffusion weighted imaging; dysuria; epidural space; histology; immunohistochemistry; low back pain; lumbar spine; lumbar vertebra; male; metastasis; nonhuman; nuclear magnetic resonance imaging; painful defecation; paraspinal muscle; pelvic girdle; rhabdomyosarcoma; short tau inversion recovery; T1 weighted imaging; T2 weighted imaging | English | Final | 2023 | 10.14456/tjvm.2023.34 | 바로가기 | 바로가기 | 바로가기 | |||||||
| ○ | Article | Flame Stability and Emission Characteristics of Non-Premixed Ammonia Cracking Gas/Air Combustion in a Tangential Injection Burner | Combustion characteristics of partial cracking ammonia gas were investigated using a tangential injection burner. As the cracking ratio increased, the stable operational regime expanded, leading to the blowout limit of 0=0.17. Higher injection velocities increased the wall peak temperature due to augmented heat transfer but lowered temperatures near the injector as the high-temperature reaction zone shifted downstream. NO exhibited peak values at 40-60% cracking ratio, attributed to enhanced radical formation with hydrogen addition. Numerical simulations, employing a perfectly stirred reactor model and a steady laminar flamelet model, demonstrated that these models, based on different assumption of flame structure, accurately reproduce NO levels in low and high cracking ratio conditions, respectively. | Park, Joo-Won; Kim, Namsu; Guahk, Young Tae; Lee, Hookyung; Lee, Minjung; Im, Seong-kyun | Kyungpook Natl Univ, Sch Mech Engn, Taegu, South Korea; Korea Inst Energy Res, Energy Convergence Syst Res Dept, Daejeon, South Korea; Seoul Natl Univ Sci & Technol, Dept Future Energy Convergence, Seoul 01811, South Korea | Im, Seong-kyun/B-2360-2013; Park, JOO-WON/LRU-3013-2024 | nskim@kier.re.kr; | JOURNAL OF THE KOREAN SOCIETY OF COMBUSTION | J KOREAN SOC COMBUST | 1226-0959 | 2466-2089 | 28 | 4 | ESCI | ENGINEERING, MECHANICAL | 2023 | 0.7 | 88.3 | 1 | Ammonia; Ammonia cracking; Tangential injection; NO emission; Damkohler number | English | 2023 | 2023 | 10.15231/jksc.2023.28.4.036 | 바로가기 | 바로가기 | 바로가기 | ||||||||||
| ○ | Article | Normal thymus evaluation using radiographs and computed tomographic images in young and adult dogs | The thymus generally presents as a sail-shaped soft-tissue opacity on thoracic radiographs in young, prepubescent dogs. After puberty, lymphatic tissue is replaced by adipose tissue and can usually no longer be identified on radiographs; however, thymic remnants have often been observed in adult dogs. The objective of this retrospective descriptive study was to investigate the incidence of thymic remnants using thoracic radiographs and to analyze the incidence in dogs by age, sex and breed. We analyzed the data from 1,464 dogs that underwent both thoracic ventrodorsal and right lateral radiography, of which 40 underwent both radiography and computed tomography (CT). The frequency of thymus identification on thoracic radiographs decreased with age in 184 dogs aged 1 year, thymic remnants were observed in 81 dogs (6.33%), with a greater frequency in intact female dogs than intact male dogs (P = 0.015). Thymic remnants were observed more frequently in castrated male dogs than in intact male dogs, with borderline significance (P = 0.051). The frequency of thymic remnants was not related to age, body size or breed. Thymic remnants were identified in 20 out of 40 dogs that underwent CT examination, of which two showed thymic remnants on both thoracic radiographs and CT images, and 18 showed thymic remnants only on CT images. In conclusion, although the thymus involutes with aging, thymic remnants may be observed in adult dogs, at an incidence of approximately 6.3%. The frequency of thymic remnants on thoracic radiographs was higher in intact females than in intact males but was not related to age, body size or breed. Additionally, CT could be more useful than radiography for detecting thymic remnants. | Park, Yoenhee; Lee, Sang-Kwon; Choi, Sooyoung; Choi, Hojung; Lee, Youngwon; Lee, Kija | Kyungpook Natl Univ, Coll Vet Med, Dept Vet Med Imaging, Daegu 41566, South Korea; Kangwon Natl Univ, Coll Vet Med, Dept Vet Diagnost Imaging, Chunchon 24341, South Korea; Chungnam Natl Univ, Coll Vet Med, Dept Vet Med Imaging, Daejeon 34134, South Korea | Lee, Sang-Kwon/IYI-9991-2023 | leekj@knu.ac.kr; | THAI JOURNAL OF VETERINARY MEDICINE | THAI J VET MED | 0125-6491 | 53 | 1 | SCIE | VETERINARY SCIENCES | 2023 | 0.3 | 88.3 | 0 | computed tomography; dog; radiography; thymus; thymic remnants | GROWTH-HORMONE; SEX; RATS; THYMOLIPOMA; APPEARANCE; REVERSAL; AGE; CT | English | 2023 | 2023 (JAN-MAR) | 10.14456/tjvm.2023.5 | 바로가기 | 바로가기 | 바로가기 |
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