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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 | X-ray beam test of fabricated photo-diodes for Pohang-Accelerator-Laboratory X-ray free-electron laser | The Pohang-Accelerator-Laboratory X-ray free-electron laser (PAL-XFEL) emits intense, ultra-short X-ray pulses, enabling studies on ultra-small and -fast dynamics in various fields. We designed and fabricated silicon p-intrinsic-n photo-diodes (PDs) to detect strong X-ray pulses. Four types of PDs were fabricated with different metal shapes on the P- and N-sides. The fabrication process was split into two parts, based on the thickness of the Al metal and anti-reflective coating (ARC) layers, to evaluate the fabrication process feasibility and the detection performance. A beam test was performed with X-ray pulses at the soft X-ray beamline of the PAL-XFEL using the proposed PDs and a commercial PD. The test was designed to evaluate the effects of the metal and ARC layers and compare the detection efficiency depending on the X-ray entrance side and signal readout side. The waveforms were saved during the test and integrated to obtain the charges. Thereafter, they were analyzed and normalized, and compared. This paper presents the preparation, setup, and procedure of the beam test, and the test results are described. | Lee, S. C.; Hyun, H. J.; Baek, J. M.; Hwang, S. M.; Jang, H.; Kim, J. Y.; Kim, S. H.; Park, H. | Pohang Univ Sci & Technol, XFEL Beamline Div, Pohang Accelerator Lab, Pohang, South Korea; Kyungpook Natl Univ, Dept Phys, Daegu, South Korea; Univ Illinois, Dept Phys, Chicago, IL USA; Sungho Elect, Capacitor Inst Technol, Suwon, Gyeonggi, South Korea | Hyun, HyoJung/ABP-4746-2022 | hjhyun@postech.ac.kr; | FRONTIERS IN PHYSICS | FRONT PHYS-LAUSANNE | 2296-424X | 11 | SCIE | PHYSICS, MULTIDISCIPLINARY | 2024 | 2.1 | 42.5 | 0 | PIN photo-diode; fabrication; metal thickness; anti-reflective coating; signal readout; X-ray beam test; Pohang-Accelerator-Laboratory X-ray free-electron laser (PAL-XFEL) | PUMP | English | 2024 | 2024-01-04 | 10.3389/fphy.2023.1328639 | 바로가기 | 바로가기 | 바로가기 | |||||||||||
| ○ | ○ | Article | Controlling the stability and adhesion performance of cold-setting phenol-resorcinol-formaldehyde resin adhesives through methanol addition | Phenol-resorcinol-formaldehyde (PRF) resin adhesives are commonly used in the manufacture of laminated timber products, and they are cold -set at room temperature rather than hot -pressed to generate a threedimensional polymer structure in the products. However, their excellent reactivity often leads to poor storage stability and a short pot life. This study examines the influence of methanol addition on the stability and adhesion performance of PRF resins. These resins were synthesized by various levels of methanol addition (5 %, 10 %, and 15 %), and their structures were investigated using Fourier -transform infrared (FTIR) and nuclear magnetic resonance (NMR) spectroscopies. Furthermore, differential scanning calorimetry (DSC) was used to analyze their thermal behavior, and their cure kinetics were analyzed with two isoconversional analyses: Kissinger-Akahira-Sunose (KAS) and Vyazovkin (VYZ) method. The adhesion performances of PRF resins were evaluated for glue -laminated timber (GLT). The results demonstrated that the viscosity and solids content of PRF resins decreased while their gelation time increased as the methanol addition level increased. Methanol addition has also improved the resin stability over time. The chemical structure of PRF resins did not change considerably with an increase in the methanol level. However, methanol interaction with formalin in a hardener presumably hindered the reactivity of PRF resins. This was supported with an increase in the apparent activation energy of the curing process of PRF resins as the methanol level increased. In addition, decreasing the methanol levels from 15 % to 5 % enhanced the adhesion performance of GLT bonded with PRF resins. The results indicated that adding methanol to PRF resins improved its stability while simultaneously weakened its performance. However, 5 % methanol level is recommended for PRF resins. | Wibowo, Eko Setio; Park, Byung-Dae | Kyungpook Natl Univ, Dept Wood & Paper Sci, Daegu 41566, South Korea; Natl Res & Innovat Agcy, Res Ctr Biomass & Bioprod, Bogor 16911, Indonesia | Wibowo, Eko/AAL-5888-2021; Park, Byung-Dae/ABB-1934-2020 | 57214910272; 7402834820 | woodglue@hanmail.net; | INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES | INT J ADHES ADHES | 0143-7496 | 1879-0127 | 132 | SCIE | ENGINEERING, CHEMICAL;MATERIALS SCIENCE, MULTIDISCIPLINARY | 2024 | 3.5 | 42.6 | 1.21 | 2025-05-07 | 3 | 5 | Cold -setting adhesives; PRF resins; Methanol; Stability; Nuclear magnetic resonance; Cure kinetics; Adhesion | C-13 NMR CHARACTERIZATION; UREA-FORMALDEHYDE; MOLECULAR-WEIGHT; THERMAL-BEHAVIOR; WOOD ADHESIVES; NOVOLAC; WATER | Adhesion; Cold-setting adhesives; Cure kinetics; Methanol; Nuclear magnetic resonance; PRF resins; Stability | Activation Energy; Adhesion; Adhesives; Curing; Formaldehyde; Gelation; Activation energy; Adhesion; Adhesives; Curing; Differential scanning calorimetry; Formaldehyde; Fourier transform infrared spectroscopy; Gelation; Laminating; Methanol; Nuclear magnetic resonance spectroscopy; Phenols; Resins; Thermodynamic stability; Adhesion performance; Cold-setting; Cold-setting adhesive; Cure kinetics; Glue-laminated timber; Phenol resorcinol formaldehydes; Phenol–resorcinol–formaldehyde resin; Resin adhesives; Resorcinol formaldehyde resin; Stability performance; Nuclear magnetic resonance | English | 2024 | 2024-06 | 10.1016/j.ijadhadh.2024.103717 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | Development of an efficient vehicle-to-grid method for massive electric vehicle aggregation | The growing adoption of renewable energy and electric vehicles (EVs) has contributed to environmental sustainability; nevertheless, integration of these products into the power grid has become complex owing to their unpredictable nature and variable energy demands. A significant challenge lies in the realization of large-scale, coordinated control of EVs to serve as an alternative to traditional energy storage systems. This challenge is underscored by the complexity of optimization in large-scale cooperative control problems and the difficulty in reducing such problems to an easily manageable and practical level in real-world application. In response to these challenges, a practical mechanism for the integration of EVs into a vehicle-to-grid concept is proposed in this study. In this approach, the constraints involved in merging multiple EVs into a fictitious clustered energy storage unit, which are often neglected, are given renewed focus. An iterative multi-stage optimization method is introduced that includes an EV aggregation clustering model, multi-tier optimization model, and recursive framework. Here, marked efficacy for larger EV fleets is demonstrated for this method, providing optimal charging and discharging schedules for each vehicle while a high degree of precision is maintained. With the proposed technique, validated through numerous case studies using historical data, the global optimum solution is largely approximated, with a marginal deviation of 4 %. In addition, robustness of the model is demonstrated under varying pricing scenarios, with a computation time that increases in a linear manner, rather than exponentially, as the number of EVs increases. Meanwhile, compared with conventional methods, the technique proposed in this study has the capacity to fulfill the charging demands of all users with reduced charging expense, demonstrating the high precision and efficacy of the technique. | Seo, Mingyu; Kodaira, Daisuke; Jin, Yuwei; Son, Hyeongyu; Han, Sekyung | Kyungpook Natl Univ, Sch Elect & Elect Engn, Daegu 41566, South Korea; Univ Tsukuba, Informat & Syst, Tsukuba 3058573, Japan | 57215358477; 56974393400; 57212253293; 58165869800; 36023785800 | skhan@knu.ac.kr; | ENERGY REPORTS | ENERGY REP | 2352-4847 | 11 | SCIE | ENERGY & FUELS | 2024 | 5.1 | 42.6 | 1.48 | 2025-05-07 | 6 | 8 | Electric vehicle; Clustered energy storage; Multi -stage optimization; Computation time reduction; Auxiliary services | RENEWABLE ENERGY; MODEL; OPTIMIZATION; STATION; DESIGN | Auxiliary services; Clustered energy storage; Computation time reduction; Electric vehicle; Multi-stage optimization | Digital storage; Electric vehicles; Energy efficiency; Iterative methods; Sustainable development; Vehicle-to-grid; Auxiliary services; Clustered energy storage; Computation time; Computation time reduction; Grid methods; Large-scales; Multi-stage optimization; Renewable energies; Time reduction; Vehicle to grids; Energy storage | English | 2024 | 2024-06 | 10.1016/j.egyr.2024.01.028 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||||
| ○ | ○ | Article | Effects of wheat flour levels on the thermal curing behavior of Urea-Formaldehyde and Phenol-Formaldehyde resins | Urea - formaldehyde (UF) and phenol - formaldehyde (PF) resins are the most prevalent adhesives in the manufacturing of wood composites, and they are cured by hot pressing to build a three-dimensional network structure in the composites. UF and PF resins are typically formulated with organic fillers like wheat flour to control viscosity and reduce costs in the commercial production of plywood. Although this formulation is well established, research on the effect of filler on the curing behavior of UF and PF resins has been insufficient. Therefore, this study used differential scanning calorimetry (DSC) to examine the influence of wheat flour as a filler in varying amounts on the thermal curing behavior of UF and PF resins. The results demonstrated that the viscosity and solid content of the UF and PF resins increased as the filler amount increased. In contrast, the gelation time, which reflected the curing speed of the resins, decreased as the filler content increased. Similarly, DSC results demonstrated that with increased filler amounts, the curing reaction of UF resins accelerated, as evidenced by a decrease in the apparent activation energy ( E a ) determined using the Kissinger - Akahira - Sunose and Vyazovkin methods. However, in the case of PF resins, the average E a increased and subsequently declined when 10% and 20% fillers were added. This demonstrated the complicated interaction between wheat flour and resins, particularly PF resins. Furthermore, the isothermal DSC curves reveal that the highest exothermic peaks of UF resins are observed at different isothermal temperatures as the filler amount increases. In contrast, PF resins maintain an isothermal temperature for the highest exothermic peaks across all filler levels. In addition, FTIR analysis suggested that wheat flour might contribute to the curing reaction of UF and PF resins. | Wibowo, Eko Setio; Park, Byung-Dae | Kyungpook Natl Univ, Dept Wood & Paper Sci, Daegu 41566, South Korea; Natl Res & Innovat Agcy, Res Ctr Biomass & Bioprod, Bogor 16911, Indonesia | Wibowo, Eko/AAL-5888-2021; Park, Byung-Dae/ABB-1934-2020 | 57214910272; 7402834820 | byungdae@knu.ac.kr; | INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES | INT J ADHES ADHES | 0143-7496 | 1879-0127 | 132 | SCIE | ENGINEERING, CHEMICAL;MATERIALS SCIENCE, MULTIDISCIPLINARY | 2024 | 3.5 | 42.6 | 0.3 | 2025-05-07 | 0 | 2 | Formaldehyde -based resins; Wheat flour; Curing; Activation energy | KINETIC-ANALYSIS; ADHESIVES; EMISSION; RESORCINOL; PARAMETERS; FILLERS | Activation energy; Curing; Formaldehyde-based resins; Wheat flour | Adhesives; Curing; Fillers; Formaldehyde; Gelation; Hot Pressing; Adhesives; Curing; Differential scanning calorimetry; Fillers; Formaldehyde; Gelation; Hot pressing; Isotherms; Metabolism; Phenols; Resins; Urea; Urea formaldehyde resins; Viscosity; Curing; Curing behavior; Curing reactions; Exothermic peaks; Formaldehyde-based resin; Phenol-formaldehyde resin; Thermal curing; Urea formaldehyde; Urea-formaldehyde resin; Wheat flours; Activation energy | English | 2024 | 2024-06 | 10.1016/j.ijadhadh.2024.103694 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | Exergy and exergoeconomic analysis of a hybrid airborne wind and solar energy system for power, liquid nitrogen and carbon dioxide production | Airborne wind energy (AWE) systems have emerged as cost-effective and sustainable solutions that have not yet been coupled with solar technologies and integrated power plants to produce energy and on-demand substances. This study proposes an integrated system driven by an innovative AWE and photovoltaic (PV) hybrid system. This combination can harness stronger and more stable wind energy while decreasing system costs and power intermittency. The proposed system combines seven subsystems, including AWE, PV, air separation unit, oxyfuel power plant, absorption refrigeration, a nitrogen liquefaction process, and Organic Rankine Cycle (ORC) to simultaneously generate power, liquid nitrogen, and liquid carbon dioxide. The hybrid AWE-PV system can generate 10.8 MW power to initiate the system to produce 55 MW power, 127.2 m3/h 3 /h liquid nitrogen, and 98.4 m3/h 3 /h liquid carbon dioxide. The exergy analysis has been conducted, showing maximum exergy destruction in heat exchangers, and the total exergy efficiency of the integrated structure reaches 90.21 %. The exergoeconomic analysis illustrates that the maximum capital cost occurs in compressors and turbines with a percentage of 51 % ( 4600 $/h) and 26 % ( 2400 $/h), respectively. This first demonstration of implementing hybrid AWE-PV renewable energy sources in an integrated structure can open new perspectives and avenues toward using AWE and its combination with other renewable energy sources in the future. | Nouri, Milad; Kavgic, Miroslava; Hinzer, Karin; Owolabi, Abdulhameed Babatunde | Univ Ottawa, Civil Engn, 161 Louis Pasteur, Ottawa, ON K1N 6N5, Canada; Univ Ottawa, Elect Engn, 161 Louis Pasteur, Ottawa, ON K1N 6N5, Canada; Kyungpook Natl Univ, Reg Leading Res Ctr Smart Energy Syst, Sangju 37224, South Korea; Kyungpook Natl Univ, Dept Convergence & Fus Syst Engn, Sangju 37224, South Korea | ; Nouri, Milad/AAV-8050-2021 | 56180312300; 23995316100; 7004135873; 57192210107 | mkavgic@uottawa.ca; | ENERGY REPORTS | ENERGY REP | 2352-4847 | 12 | SCIE | ENERGY & FUELS | 2024 | 5.1 | 42.6 | 0 | 2025-05-07 | 0 | 0 | Airborne wind energy; PV system; Oxyfuel power plant; Liquid nitrogen; Liquid carbon dioxide; Exergoeconomic | GENERATION; STORAGE; TECHNOLOGIES; INTEGRATION; LOCATIONS | Airborne wind energy; Exergoeconomic; Liquid carbon dioxide; Liquid nitrogen; Oxyfuel power plant; PV system | Cost effectiveness; Exergy; Hybrid systems; Liquefied gases; Rankine cycle; Solar energy; Wind power; Airborne wind energy; Exergoeconomic analysis; Exergoeconomics; Exergy Analysis; Liquid carbon dioxide; Oxy-fuels; Oxyfuel power plant; Photovoltaic systems; Photovoltaics; Power; Carbon dioxide | English | 2024 | 2024-12 | 10.1016/j.egyr.2024.08.006 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |||
| ○ | ○ | Article | Wetting characteristics of Li-ion battery electrodes: Impact of calendaring and current collector contact angle - A Lattice Boltzmann Method investigation | Calendaring is a common process for enhancing the power density of Li-ion battery electrodes. In this study, the Shan-Chen-based Lattice Boltzmann Method is used to investigate the effects of different calendaring levels (0%, 10%, 20%, and 25%) on the wetting behavior of a Li-ion battery electrode. The actual contact angles between the electrolyte and battery components are incorporated, and the GPU-accelerated in-house code is developed to facilitate adequate meshing. An increased calendaring degree leads to a longer saturation time and increases gas entrapment within the cathode structure. The findings provide valuable insights into the dynamics of the electrolyte wetting process within the porous structure as calendaring levels change. The positioning of the pores and electrode particles strongly affects the electrolyte imbibition rate. In addition, this study examines the influence of the contact angle between the electrolyte and current collectors as a function of calendaring degrees. A 15 degrees contact angle results in marginally lower gas entrapment at 25% calendaring while consistently showing lower imbibition rates across all calendaring levels. At lower calendaring cases, 35 degrees and 60 degrees contact angle cases perform nearly the same, while at higher calendaring, the 60 degrees case outperforms the 35 degrees case but at the expense of higher gas entrapment. | Abubaker, Muhammad; Sohn, Chang Hyun; Ali, Hafiz Muhammad | Kyungpook Natl Univ, Dept Mech Engn, Daegu 41566, South Korea; COMSATS Univ Islamabad, Dept Mech Engn, Sahiwal, Pakistan; King Fahd Univ Petr & Minerals, Mech Engn Dept, Dhahran, Saudi Arabia; King Fahd Univ Petr & Minerals, Interdisciplinary Res Ctr Sustainable Energy Syst, Dhahran, Saudi Arabia; Kyungpook Natl Univ, Dept Mech Engn, 80 Daehak Ro, Daegu 41566, South Korea | Ali, HM/AAH-3473-2021 | 56266743000; 36806852600; 55749198400 | chsohn@knu.ac.kr;hafiz.ali@kfupm.edu.sa; | ENERGY REPORTS | ENERGY REP | 2352-4847 | 11 | SCIE | ENERGY & FUELS | 2024 | 5.1 | 42.6 | 1.48 | 2025-05-07 | 6 | 6 | Lithium-ion batteries; Wetting behavior; Current collector; Separator; Electrolyte imbibition | COMPUTATIONAL FLUID-DYNAMICS; FILLING PROCESS; POROUS-ELECTRODES; LITHIUM; WETTABILITY; VISUALIZATION; DISPLACEMENT; PERFORMANCE; SIMULATION; MODEL | Current collector; Electrolyte imbibition; Lithium-ion batteries; Separator; Wetting behavior | Contact angle; Electric current collectors; Electrodes; Ions; Kinetic theory; Lithium-ion batteries; Wetting; Calendaring; Common process; Current-collector; Electrolyte imbibition; Gas entrapments; Lattice Boltzmann method; Li-ion battery electrodes; Power densities; Wetting behavior; Wetting characteristics; Electrolytes | English | 2024 | 2024-06 | 10.1016/j.egyr.2024.01.069 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |||
| ○ | ○ | Article | Wetting performance analysis of porosity distribution in NMC111 layered electrodes in lithium-ion batteries using the Lattice Boltzmann Method | Wettability by electrolytes is a crucial yet time-intensive step in manufacturing lithium-ion batteries, with the challenge intensifying for high-density electrodes subjected to calendaring. Achieving complete wetting is vital for battery operation, as it ensures the uniform formation of the solid electrolyte interface essential for ionic transport. This study employs the Lattice Boltzmann Method to investigate the wettability of NMC111 cathodes composed of layers with varying porosities and electrode thicknesses. Utilizing an in-house code, actual contact angles between the electrolyte and battery components are used to identify critical areas prone to gas entrapment. The findings reveal that incorporating high-porosity layers at these interfaces can mitigate gas entrapment in both medium and thick electrodes, particularly under high calendaring conditions, and enhance the imbibition rate under thick electrodes. Conversely, placing high-porosity layers in the middle of the electrode structure compromises electrolyte saturation and significantly increases gas entrapment, though it marginally improves the imbibition rate in medium-thick electrodes. The analysis extends beyond overall wetting performance to include a detailed examination of local wetting behavior, providing insights into homogeneous cathodes and those with varied porosity layers. | Abubaker, Muhammad; Sohn, Chang-Hyun; Ali, Hafiz Muhammad | Kyungpook Natl Univ, Dept Mech Engn, Daegu 41566, South Korea; Comsats Univ Islamabad Sahiwal, Dept Mech Engn, Sahiwal 57000, Pakistan; King Fahd Univ Petr & Minerals, Mech Engn Dept, Dhahran 31261, Saudi Arabia; King Fahd Univ Petr & Minerals, Interdisciplinary Res Ctr Sustainable Energy Syst, Dhahran 31261, Saudi Arabia | ; Ali, HM/AAH-3473-2021 | 56266743000; 36806852600; 59380032800 | abubaker@knu.ac.kr;chsohn@knu.ac.kr;hafiz.ali@kfupm.edu.sa; | ENERGY REPORTS | ENERGY REP | 2352-4847 | 12 | SCIE | ENERGY & FUELS | 2024 | 5.1 | 42.6 | 0.25 | 2025-05-07 | 1 | 1 | lithium-ion batteries; Lattice Boltzmann Method; electrolyte wetting; electrolyte imbibition; gas entrapment; mixed porosity layers | FILLING PROCESS; POROUS-ELECTRODES; VISUALIZATION; WETTABILITY; MODEL | electrolyte imbibition; electrolyte wetting; gas entrapment; Lattice Boltzmann Method; lithium-ion batteries; mixed porosity layers | Kinetic theory of gases; Solid electrolytes; Electrolyte imbibition; Electrolyte wetting; Gas entrapments; Ion batteries; Lattice Boltzmann method; Lithium ions; Mixed porosity layer; Porosity layers; Thick electrodes; Wetting performance; Wetting | English | 2024 | 2024-12 | 10.1016/j.egyr.2024.07.020 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |||
| ○ | ○ | Article | Evaluation of Tree Object Segmentation Performance for Individual Tree Recognition Using Remote Sensing Techniques Based on Urban Forest Green Structures | This study evaluated whether tree object segmentation using remote sensing techniques could be effectively conducted according to the green structures of urban forests. The remote sensing techniques used were handheld LiDAR and UAV-based photogrammetry. The data collected from both methods were merged to complement each other's limitations. The green structures of the study area were classified into three types based on the distance between canopy trees and the presence of shrubs. The ability to individually classify trees within each of the three types of green structures was then evaluated. The evaluation method was to assess the success rate by comparing the actual number of trees, which were visually counted in the field, with the number of tree objects classified in the study. To perform semantic segmentation of tree objects, a preprocessing step was conducted to extract only the data related to tree structures from the data collected through remote sensing techniques. The preprocessing steps included data merging, noise removal, separation of DTM and DSM, and separation of green areas and structures. The analysis results showed that tree object recognition was not efficient when the green structures were complex and mixed, and the recognition rate was highest when only canopy trees were present, and the canopies did not overlap. Therefore, when observing in high-density areas, the semantic segmentation algorithm's variables should be adjusted to narrow the object recognition range, and additional observations in winter are needed to compensate for areas obscured by leaves. By improving data collection methods and systematizing the analysis methods according to the green structures, the object recognition process can be enhanced. | Sung, Uk-Je; Eum, Jeong-Hee; Chung, Kyung-Jin | Kyungpook Natl Univ, Dept Landscape Architecture, 80 Daehak Ro, Daegu 41566, South Korea; Huron Network Co Ltd, 5,Gunpocheomdansaneop 2 Ro 22beon Gil, Gunpo Si 15880, Gyeonggi Do, South Korea | EUM, JH/IWE-0201-2023 | 57224731922; 55322972500; 59425933400 | ukje1008@knu.ac.kr;eumjh@knu.ac.kr;ckj007@gachon.ac.kr; | LAND | LAND-BASEL | 2073-445X | 13 | 11 | SSCI | ENVIRONMENTAL STUDIES | 2024 | 3.2 | 42.7 | 0 | 2025-05-07 | 0 | 0 | LiDAR; photogrammetry; semantic segmentation; point cloud | AIRBORNE | LiDAR; photogrammetry; point cloud; semantic segmentation | canopy architecture; data set; lidar; performance assessment; photogrammetry; remote sensing; segmentation; semantic standardization | English | 2024 | 2024-11 | 10.3390/land13111856 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | Article | Flow Structures around a Square Cylinder: Effect of Corner Chamfering | In this paper, results of a flow visualization study on the flow around a square cylinder with corner chamfering are presented. The corners of the test cylinders were chamfered with each corner forming a triangle with chamfer dimension b. Experiments were conducted for b/Bo ratios of 0.05, 0.1, 0.2, and 0.3 where Bo is the side dimension of the uncut square cylinder. The flow structures, particularly the vortex shedding mode and mechanism around the uncut as well as chamfered square cylinders, were investigated in order to deduce the effect of corner modification. All the studies were conducted at a Reynolds number value of 2,100 (based on Bo) on both stationary and oscillating cylinders. For oscillating cases, a special mechanism was built to oscillate the cylinders (forced oscillation) at desired amplitudes and frequencies. Results indicates that corner chamfering brings notable changes in the near-wake flow structures of a square section cylinder both in stationary and oscillating conditions. In view of aerospace structures with similar geometries, the present results carry considerable practical significance. Many engineering structures carry square section geometry, such as buildings, bridge pylons, and so on, and are subjected to fluid flows. Flow around them can induce certain static and dynamic loads on these structures due to which eventually, they can fail if not designed properly. Flow-induced loads majorly depend on the body geometry. For square section cylinders (structures), corner shape is found to be a crucial factor that decides the nature of the flow field developed over them. This is because a properly designed corner shape can significantly bring down hydrodynamic/aerodynamic loads imposed on structures, ensuring structural safety. In this study, the corners of a square section cylinder are chamfered, and influence of this corner shape is studied through flow visualization. Flow visualization enables qualitative (mainly) as well as quantitative analysis of the flow field developed on the cylinder with different degrees of corner chamfering. This study brings out the effectiveness of corner chamfering in influencing the flow around a square cylinder, which represents an engineering structure in real world scenarios. | Hariprasad, C. M.; Kumar, R. Ajith; Dahl, Jason; Sohn, Chang Hyun | Amrita Vishwa Vidyapeetham, Dept Mech Engn, Amritapuri 690525, India; Univ Rhode Isl, Dept Ocean Engn, Kingston, RI 02881 USA; Kyungpook Natl Univ, Sch Mech Engn, 1370,Sankyuk Dong, Daegu 702701, South Korea | AJITH KUMAR, SILPA/AAI-6578-2021 | hariology@yahoo.co.in; | JOURNAL OF AEROSPACE ENGINEERING | J AEROSPACE ENG | 0893-1321 | 1943-5525 | 37 | 3 | SCIE | ENGINEERING, AEROSPACE;ENGINEERING, CIVIL | 2024 | 1.6 | 42.7 | 5 | RECTANGULAR CYLINDERS; PRESSURE-FLUCTUATIONS; AERODYNAMIC FORCES; INDUCED VIBRATION; TRAILING-EDGE; WAKE; BEHAVIOR; RADIUS; INSTABILITY; MECHANISMS | English | 2024 | 2024-05-01 | 10.1061/jaeeez.aseng-4404 | 바로가기 | 바로가기 | 바로가기 | ||||||||||
| ○ | ○ | Article | Improving Wheat Yield with Zeolite and Tillage Practices under Rain-Fed Conditions | Wheat is the most consumed crop worldwide. Zeolite application combined with good tillage practices are good combinations that provide better soil conditions for wheat crops. Zeolite also provides a good layer for carbon to be absorbed into the soil and can retain carbon for hundreds of years. The current study aimed to investigate the effect of tillage practices and zeolite treatments on soil carbon retention and wheat crop productivity. Arranging the treatments implemented according to a factorial randomized block design which includes three replications. Tillage treatments include three levels vis: T1= 6 tillage practices with the help of cultivator (farmer practice/control), T2 (minimum tillage), and T3 (2 cultivation with cultivator + Mold-board plough). The zeolite applications consist of four levels: Z1 = 0, Z2 = 5, Z3 = 10 and Z4 = 15 t ha-1. The effect of the interaction between zeolite treatments and tillage practices on various factors related to soil and crops such as emission of carbon dioxide (CO2), dissolved organic carbon, soil organic carbon, and the productivity and components of wheat productivity. Zeolite applied at 10 t ha-1 in combination with minimum tillage gave significant differences in terms of CO2 emission, dissolved organic carbon, and on soil organic carbon. The experimental results showed that minimum CO2 emission (25.43 and 31.12 (kg CO2-C ha-1 h-1), dissolved organic carbon (4.80 and 4.90 g C kg-1), soil organic carbon (7.88 and 7.97 g C kg-1), plant height (92.14 and 92.97 cm), spike length (11.88 ad 12.11 cm), number of spikelets (20.11 and 20.98), number of tillers (278.65 and 283.93) per unit area, 1000 grain weight (50.74 and 51.54 g), biological yield (8134.87 and 8187.38 kg ha-1) and grain yield (2984.28 and 3028.96 kg ha-1) and harvest index (36.69 and 37.04%) of wheat was observed in zeolite applied at 10 t ha-1 with minimum tillage practice (T2 x Z3) compared to control and other treatments for both the years, respectively. It is therefore concluded that minimum tillage should be practiced in wheat crops with the application of zeolite at 10 t ha-1 to obtain better yield and soil carbon retention under rain-fed conditions. | Ul Hassan, Mehmood; Shah, Syed Tanveer; Basit, Abdul; Hikal, Wafaa M.; Khan, Mushtaq Ahmad; Khan, Waleed; Tkachenko, Kirill G.; Brini, Faical; Ahl, Hussein A. H. Said-Al | Hazara Univ, Dept Agr, Mansehra 21300, Pakistan; Kyungpook Natl Univ, Dept Hort Sci, Daegu 41566, South Korea; Univ Tabuk, Fac Sci, Dept Biol, Tabuk 71491, Saudi Arabia; Kyungpook Natl Univ, Dept Appl Biosci, Lab Crop Prod, Daegu 41566, South Korea; Russian Acad Sci, Peter Great Bot Garden VL Komarov Bot Inst, St Petersburg 197376, Russia; Ctr Biotechnol Sfax, Biotechnol & Plant Improvement Lab, PO 1177, Sfax 3018, Tunisia; Natl Res Ctr NRC, Pharmaceut & Drug Ind Res Inst, Med & Aromat Plants Res Dept, 33 El Behouth St, Dokki 12622, Giza, Egypt | Hikal, Wafaa/N-3939-2018; Tkachenko, Kirill/ABG-2233-2020; Said-Al Ahl, Hussein/F-6815-2018; Basit, Abdul/AAX-2414-2021; Ahl, Hussein/F-6815-2018 | 57202837542; 56089730700; 58696991300; 55766415500; 57226034153; 57822855200; 6701798418; 15070412700; 32868150500 | mehmoodarid@gmail.com;dr.syedtanveershah@hu.edu.pk;abdulbasit97_lily@knu.ac.kr;wafaahikal@gmail.com;mushtaq@uoswabi.edu.pk;kigatka@gmail.com;faical.brini@cbs.rnrt.tn;shussein272@yahoo.com; | LAND | LAND-BASEL | 2073-445X | 13 | 8 | SSCI | ENVIRONMENTAL STUDIES | 2024 | 3.2 | 42.7 | 0 | 2025-05-07 | 0 | 0 | dissolved organic carbon; soil organic carbon; tillage; zeolite; wheat | WATER-USE EFFICIENCY; NITROGEN-FERTILIZATION; QUALITY COMPONENTS; RICE; SOIL; CANOLA; GROWTH; UREA | dissolved organic carbon; soil organic carbon; tillage; wheat; zeolite | crop yield; dissolved organic carbon; rainfed agriculture; soil carbon; tillage; wheat; zeolite | English | 2024 | 2024-08 | 10.3390/land13081248 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | Sustainable Soil Management in Alkaline Soils: The Role of Biochar and Organic Nitrogen in Enhancing Soil Fertility | Biochar (BC) serves a vital function in sequestering carbon, improving nutrient cycles, and boosting overall soil quality. This research explored the enhancement of the chemical and physical properties of soil (alkaline) using nitrogen and biochar (from organic and inorganic sources) in a semi-arid climate during the autumn seasons of 2015-2016 and 2016-2017. The study involved applying biochar at various rates (0, 10, 20, and 30 t ha(-)1) and nitrogen at different levels (0, 90, 120, and 150 kg ha(-)1) using urea, poultry manure (PM), and farmyard manure (FYM) as nitrogen sources, which were applied to the field in a randomized complete block design with split-plot arrangement. The application of biochar at the highest rate (30 t ha(-)1) resulted in a significant increase of over 120% in soil organic matter (SOM), soil organic carbon (SOC), and soil moisture content (SMC). Additionally, it increased total soil nitrogen (STN) by 14.16% and mineral nitrogen (SMN) by 9.09%. In contrast, applying biochar at this rate reduced soil bulk density (SBD), pH, and electrical conductivity (EC) by 28.52%, 3.38%, and 2.27%, respectively, compared to the control. Similarly, applying nitrogen at 150 kg ha(-)1 using FYM significantly improved SOC, SOM, SMC, and SBD. At the same rate, using PM as a nitrogen source enhanced STN and SMN while reducing soil pH and EC. In conclusion, this study shows that applying biochar at 30 t ha(-)1 combined with nitrogen at 150 kg ha(-)1, sourced from either PM or FYM, offers great potential for improving soil fertility and promoting carbon sequestration in alkaline soils of semi-arid regions. These findings highlight the value of integrating BC and organic N sources for enhancing agroecosystem sustainability. Thus, this study provides a promising pathway to enhance soil quality, improve crop productivity, and support sustainable agricultural practices in challenging environments. | Khan, Mushtaq Ahmad; Basir, Abdul; Shah, Syed Tanveer; Rehman, Monsif Ur; Hassan, Mehmood ul; Zheng, Hongbing; Basit, Abdul; Szekely, Arpad; Jamal, Aftab; Radicetti, Emanuele; Dewir, Yaser Hassan; Mancinelli, Roberto | Univ Swabi Anbar Swabi, Dept Agr, Swabi 23561, Pakistan; Hazara Univ Mansehra, Dept Agr, Mansehra 23100, Pakistan; Jinlin Agr Univ, Coll Agron, Changchun 130118, Peoples R China; Kyungpook Natl Univ, Dept Hort Sci, Floricultural Biotechnol Lab, Deagu 41566, South Korea; Hungarian Univ Agr & Life Sci, Inst Environm Sci, Res Ctr Irrigat & Water Management, Anna liget str 35, H-5540 Szarvas, Hungary; Univ Agr, Fac Crop Prod Sci, Dept Soil & Environm Sci, Peshawar 25130, Pakistan; Univ Ferrara, Dept Chem Pharmaceut & Agr Sci Docpas, I-44121 Ferrara, Italy; King Saud Univ, Coll Food & Agr Sci, Dept Plant Prod, Riyadh 11451, Saudi Arabia; Univ Tuscia, Dept Agr & Forestry Sci, Via San Camillo de Lellis Snc, I-01100 Viterbo, Italy | ; Radicetti, Emanuele/O-4326-2019; Mancinelli, Roberto/K-6427-2014; jamal, Aftab/AFU-3983-2022; Székely, Árpád/GON-7558-2022; BASIR, ABDUL/LZI-6844-2025; Basit, Abdul/AAX-2414-2021; Dewir, Yaser Hassan/D-6626-2011 | 57226034153; 56539833000; 56089730700; 57196347496; 57202837542; 55522899400; 58696991300; 57219706730; 57219108004; 35757911600; 10043389900; 14035732500 | mushtaq@uoswabi.edu.pk;a.basir@uoswabi.edu.pk;dr.syedtanveershah@hu.edu.pk;drmonsif@hu.edu.pk;mehmoodagri@hu.edu.pk;hongbingzheng@126.com;abdulbasit97_lily@knu.ac.kr;szekely.arpad@uni-mate.hu;aftabses98@gmail.com;rdcmnl@unife.it;ydewir@ksu.edu.sa;mancinel@unitus.it; | LAND | LAND-BASEL | 2073-445X | 13 | 11 | SSCI | ENVIRONMENTAL STUDIES | 2024 | 3.2 | 42.7 | 0.58 | 2025-05-07 | 1 | 1 | soil fertility; electrical conductivity; soil organic carbon; farmyard manure; poultry manure | INORGANIC FERTILIZERS; PHYSICAL-PROPERTIES; N MINERALIZATION; USE EFFICIENCY; MAIZE YIELD; MANURES; IMPACT; CARBON; DECOMPOSITION; RETENTION | electrical conductivity; farmyard manure; poultry manure; soil fertility; soil organic carbon | agricultural ecosystem; biochar; carbon sequestration; electrical conductivity; manure; moisture content; organic nitrogen; poultry; soil carbon; soil fertility; soil management; soil nitrogen; soil organic matter; sustainability | English | 2024 | 2024-11 | 10.3390/land13111869 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | Case Report: Gutter endoleak embolization in a patient with bilateral common iliac artery aneurysms treated with sandwich parallel grafts | Background Current guidelines recommend preserving at least one of the bilateral pelvic flows in patients with aortoiliac aneurysms. The sandwich parallel graft, using commercially available devices, provides a viable option for patients who fall outside the instructions for use of iliac branch devices. However, gutter endoleak remains a significant challenge.Case report A 78-year-old woman with an incidentally discovered small AAA and bilateral CIAAs experienced aneurysmal growth to 42 mm for the abdominal aortic aneurysm (AAA) and 41 mm and 33 mm for the right and left common iliac artery aneurysms (CIAAs), respectively. Morphologic assessment of the aortoiliac aneurysm revealed the nearly 90-degree angles of the bilateral iliac bifurcations and the tortuous path of the internal iliac arteries. The iliac branch device was considered relatively contraindicated and ineligible; therefore, to preserve pelvic blood flow, the decision was made to employ the sandwich parallel graft technique in the left iliac arteries. Following the placement of the sandwich graft within the iliac limb, standard procedures were carried out. However, completion angiography revealed a type IA endoleak and a significant gutter endoleak in the left CIAA extending to the AAA sac. Despite the extension of overlapping zone, the gutter endoleak persisted after a 10 min waiting period. Therefore, we then advanced an 014 wire and a microcatheter to selectively access the gutter endoleak and performed embolization using multiple detachable coils. The final angiography showed complete resolution of the gutter endoleak and computed tomography angiography 1-month postoperatively confirmed the absence of any endoleaks.Conclusion This case report highlights that targeted embolization is a feasible and effective treatment for significant gutter endoleak following the sandwich parallel graft technique. | Lee, Sangho; Kim, Hyeonju; Huh, Seung; Kim, Hyung-Kee | Kyungpook Natl Univ Hosp, Dept Surg, Div Vasc & Endovasc Surg, Daegu, South Korea; Kyungpook Natl Univ, Sch Med, Daegu, South Korea; Kyungpook Natl Univ, Dept Surg, Div Vasc & Endovasc Surg, Chilgok Hosp, Daegu, South Korea | Kim, Hyung-Kee/JBR-8125-2023 | 59152609900; 58202135200; 7101832929; 35169819900 | hkkim6260@knu.ac.kr; | FRONTIERS IN SURGERY | FRONT SURG | 2296-875X | 11 | SCIE | SURGERY | 2024 | 1.8 | 42.8 | 0 | 2025-05-07 | 0 | 0 | common iliac artery; aneurysm; parallel grafts; gutter; endoleak | AORTIC-ANEURYSM; ANATOMIC SUITABILITY; AORTOILIAC ANEURYSMS; REPAIR; PRESERVATION; DEVICES; OUTCOMES | aneurysm; common iliac artery; endoleak; gutter; parallel grafts | English | 2024 | 2024-12-19 | 10.3389/fsurg.2024.1518417 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||||
| ○ | ○ | Article | Case Report: Popliteal artery entrapment syndrome as a cause of deep vein thrombosis and subsequent popliteal artery occlusion | Background Popliteal artery entrapment syndrome (PAES) is a relatively rare cause of arterial insufficiency in young and physically active individuals; however, deep vein thrombosis (DVT) can develop in association with PAES.Case report A 47-year-old man presented with a 6-day history of left leg swelling and discomfort which was diagnosed as DVT extending to the distal femoral vein and pulmonary embolism on computed tomography (CT). PAES was not suspected at this time, and the patient was administered anticoagulants for 1 year. Two years after the DVT diagnosis, the patient developed sudden-onset left calf claudication for 1 week. Repeat CT angiography showed popliteal artery (PA) occlusion caused by PA displacement from an abnormally lateral insertion of the medial gastrocnemius head. A retrospective review of the initial CT scan confirmed this, as well as compression of the popliteal vein between the displaced medial head and the normal lateral head of the gastrocnemius. The patient eventually underwent myotomy and resection of the PA with an interposition graft.Conclusion This case underscores the potential of PAES as a rare etiology of DVT, emphasizing the importance of considering it in the differential diagnosis of DVT in younger patients lacking common predisposing factors. | Lee, Sangho; Hwang, Deokbi; Yun, Woo-Sung; Huh, Seung; Kim, Hyung-Kee | Kyungpook Natl Univ, Kyungpook Natl Univ Hosp, Sch Med, Dept Surg,Div Vasc & Endovasc Surg, Daegu, South Korea; Kyungpook Natl Univ, Chilgok Hosp, Sch Med, Dept Surg,Div Vasc & Endovasc Surg, Daegu, South Korea | Kim, Hyung-Kee/JBR-8125-2023 | 59152609900; 57194422879; 35070717000; 7101832929; 35169819900 | hkkim6260@knu.ac.kr; | FRONTIERS IN SURGERY | FRONT SURG | 2296-875X | 11 | SCIE | SURGERY | 2024 | 1.8 | 42.8 | 0 | 2025-05-07 | 0 | 0 | case report; popliteal artery entrapment syndrome; popliteal vein; deep vein thrombosis; gastrocnemius muscle | case report; deep vein thrombosis; gastrocnemius muscle; popliteal artery entrapment syndrome; popliteal vein | English | 2024 | 2024-05-06 | 10.3389/fsurg.2024.1384331 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |||||
| ○ | ○ | Review | Evolution of minimally invasive cholecystectomy: a narrative review | BackgroundLaparoscopic cholecystectomy, being a prevalent abdominal surgical procedure, has transitioned through various innovative stages aimed at reducing the procedure's invasiveness. These stages encompass Single-Incision Laparoscopic Cholecystectomy (SILC), Mini Laparoscopic Cholecystectomy (MLC), Natural Orifice Transluminal Endoscopic Surgery (NOTES), and Robotic-Assisted Laparoscopic Cholecystectomy (RALC). The purpose of this review is to trace the evolution of minimally invasive cholecystectomy techniques, assess their status, and identify emerging trends and challenges in the field.MethodAn extensive review was performed to explore the evolution and characteristics of SILC, MLC, NOTES, and RALC. The approach involved an in-depth examination of literature available on PubMed, coupled with a critical assessment of surgical outcomes, associated complications, and technical hurdles posed by these methods.ResultsSILC, despite its potential for reduced scarring, exhibits an elevated risk of bile duct damage and incisional hernia occurrences. MLC, mirroring the standard technique closely, presents minor benefits without amplifying postoperative complications, hence, positing itself as a feasible choice for routine elective cholecystectomy. NOTES, although still facing technical challenges, the hybrid transvaginal procedure is gaining clinical interest. RALC, heralded for its augmented precision and dexterity, emerges as a potential future avenue, although necessitating further exploration to ascertain its efficacy and safety.ConclusionThe progression of laparoscopic cholecystectomy methodologies embodies the surgical society's aspiration to minimize invasiveness whilst enhancing patient outcomes. This review endeavors to offer a structured discourse on SILC, MLC, NOTES, and RALC, aspiring to aid the ongoing deliberation on the judicious selection of surgical techniques in clinical practice. | Nam, Changjin; Lee, Jun Suh; Kim, Ji Su; Lee, Tae Yoon; Yoon, Young Chul | Kyungpook Natl Univ, Med Coll, Daegu, South Korea; Catholic Univ Korea, Incheon St Marys Hosp, Coll Med, Dept Surg, Seoul, South Korea | Lee, Jungho/AAJ-7137-2020; Lee, Yong Jae/GLR-4153-2022 | 59445308900; 57901595700; 57201496049; 57209269609; 56799669600 | rudestock@gmail.com; | BMC SURGERY | BMC SURG | 1471-2482 | 24 | 1 | SCIE | SURGERY | 2024 | 1.8 | 42.8 | 0.62 | 2025-05-07 | 2 | 2 | Gallbladder disease; Cholecystectomy; Surgical technique; Minimally invasive surgery; Laparoscopy | INCISION LAPAROSCOPIC CHOLECYSTECTOMY; HYBRID NOTES CHOLECYSTECTOMY; SINGLE-SITE CHOLECYSTECTOMY; ENDOSCOPIC SURGERY NOTES; BILE-DUCT INJURY; ROBOTIC CHOLECYSTECTOMY; NEEDLESCOPIC CHOLECYSTECTOMY; PORT; OUTCOMES; HERNIA | Cholecystectomy; Gallbladder disease; Laparoscopy; Minimally invasive surgery; Surgical technique | Cholecystectomy, Laparoscopic; Humans; Minimally Invasive Surgical Procedures; Natural Orifice Endoscopic Surgery; Robotic Surgical Procedures; human; laparoscopic cholecystectomy; minimally invasive surgery; natural orifice transluminal endoscopic surgery; procedures; robot assisted surgery | English | 2024 | 2024-11-29 | 10.1186/s12893-024-02659-x | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Correction | Evolution of minimally invasive cholecystectomy: a narrative review (vol 24, 378, 2024) | Nam, Changjin; Lee, Jun Suh; Kim, Ji Su; Lee, Tae Yoon; Yoon, Young Chul | Kyungpook Natl Univ, Med Coll, Daegu, South Korea; Catholic Univ Korea, Incheon St Marys Hosp, Coll Med, Dept Surg, Seoul, South Korea | Lee, Jungho/AAJ-7137-2020; Lee, Yong Jae/GLR-4153-2022 | 59445308900; 57901595700; 57201496049; 57209269609; 56799669600 | rudestock@gmail.com; | BMC SURGERY | BMC SURG | 1471-2482 | 24 | 1 | SCIE | SURGERY | 2024 | 1.8 | 42.8 | 0 | 2025-05-07 | 0 | 0 | controlled study; diagnosis; erratum; surgery | English | 2024 | 2024-12-17 | 10.1186/s12893-024-02715-6 | 바로가기 | 바로가기 | 바로가기 | 바로가기 |
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