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○ ○ Article ⓘ Investigating the causal impacts relationship between economic flood damage and extreme precipitation indices based on ARDL-ECM framework: A case study of Chungcheong region in South Korea ⓘ The attribution of climate change to various natural disasters, including flood events, has continued to receive a considerable attention as it impacts the socioeconomic sustainability of society. However, the existing knowledge on the influential role of extreme precipitation on flood events and subsequent economic damage is limited. Thus, this study investigates the causal relationship between flood damage cost, flooded area, and extreme precipitation indices in the Chungcheong region of South Korea using the autoregressive distributed lag-error correction model (ARDL-ECM) framework and pairwise Granger causality analysis. Four extreme precipitation indices: consecutive wet days (CWD), number of very heavy precipitation days (R30mm), maximum 1-day precipitation amount (Rx1day), and simple daily precipitation intensity (SDII) that measure precipitation frequency, intensity, and duration were selected with time series data on the flooded areas and estimated flood damage cost from 1985 to 2020. The ARDL-ECM bound test indicates an existence of a long-run relationship among all the variables. The empirical results of pairwise Granger causality analysis further reveal that flooded area, R30mm, and Rx1day have significant positive causal impacts on the flood damage cost in both short and long-runs, in the current period. This implies that any increase in any of these variables will cause an increase in the flood damage cost. Unidirectional causality exists from the flooded area, R30mm, Rx1days, and SDII to flood damage cost, and from R30mm and SDII to flooded area. These extreme precipitation variables could serve as indicators of flood events and economic flood damage. This study advances the knowledge of the causal link between extreme precipitation indices and economic damage from flood events. ⓘ Adelodun, Bashir; Odey, Golden; Lee, Seulgi; Choi, Kyung Sook ⓘ Kyungpook Natl Univ, Dept Agr Civil Engn, Daegu 41566, South Korea; Univ Ilorin, Dept Agr & Biosyst Engn, PMB 1515, Ilorin 240003, Nigeria; Kyungpook Natl Univ, Inst Agr Sci & Technol, Daegu 41566, South Korea ⓘ Odey, Golden/MVV-6310-2025; Lee, Seulgi/HJA-9871-2022; Adelodun, Bashir/O-2941-2018 ⓘ 57193774482; 57211444984; 57191698515; 54392662900 ⓘ adelodun.b@unilorin.edu.ng;ks.choi@knu.ac.kr; ⓘ SUSTAINABLE CITIES AND SOCIETY ⓘ SUSTAIN CITIES SOC ⓘ 2210-6707 2210-6715 95 SCIE CONSTRUCTION & BUILDING TECHNOLOGY;ENERGY & FUELS;GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY ⓘ 2023 10.5 2.7 1.89 2025-06-25 ⓘ 14 16 ARDL-ECM; Climate change indices; Extreme precipitation; Flood events; Economic damage ⓘ OIL-PRICE SHOCK; UNIT-ROOT; GREAT CRASH; TIME-SERIES; RAINFALL; AREA; COINTEGRATION; SUMMER; TRENDS; CHINA ⓘ ARDL-ECM; Climate change indices; Economic damage; Extreme precipitation; Flood events ⓘ South Korea; Cost benefit analysis; Disasters; Economic analysis; Economic and social effects; Error correction; Floods; Precipitation (meteorology); Statistical tests; Auto-regressive; Autoregressive distributed lag-error correction model; Change indexes; Climate change index; Damage costs; Economic damages; Error correction models; Extreme precipitation; Flood event; Flooded areas; climate change; disaster management; economic impact; error correction; extreme event; flood damage; Granger causality test; precipitation intensity; Climate change ⓘ English 2023 2023-08 10.1016/j.scs.2023.104606 ⓘ 바로가기 바로가기 바로가기 바로가기
○ ○ Article ⓘ On current technology for light absorber materials used in highly efficient industrial solar cells ⓘ The renewable power industry is currently experiencing a rapid growth led by photovoltaic systems because of advances in materials science and cost reductions in processing strategies. Central to the high power conversion efficiency performance of the solar cell is the light absorber, which can as well account for the bulk of the high -volume manufacturing expenditure. Technologies are continually being developed to drastically slash the mass production outlay while simultaneously maintaining a sufficiently high photoelectric performance, thereby enabling usage not just in high concentration and space applications, but conventional flat-plate and low -concentration photovoltaic systems. Here, we survey the state-of-the-art materials processing, research and technology trends, and prospects for various solar light absorber materials such as commercial-grade silicon, gallium arsenide, indium phosphide, cadmium telluride, copper indium gallium diselenide, as well as emerging organic polymers and perovskites, in single-junction and stacked cell configurations for highly efficient industrial solar cells. ⓘ Chee, A. Kuan-Way ⓘ Kyungpook Natl Univ, Sch Elect & Elect Engn, Daegu 41566, South Korea; Kyungpook Natl Univ, Coll IT Engn, Sch Elect Engn, Daegu 41566, South Korea ⓘ ⓘ 57524559900 ⓘ kwac2@cantab.net; ⓘ RENEWABLE & SUSTAINABLE ENERGY REVIEWS ⓘ RENEW SUST ENERG REV ⓘ 1364-0321 1879-0690 173 SCIE ENERGY & FUELS;GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY ⓘ 2023 16.3 2.7 0.99 2025-06-25 ⓘ 27 33 Epitaxial lift-off; Bandgap; Heterojunction; Crystals; Quantum efficiency; Electron -hole pairs; Absorption coefficient ⓘ HOLE-TRANSPORTING MATERIALS; EPITAXIAL LIFT-OFF; POWER CONVERSION EFFICIENCY; THIN-FILM; OPTICAL-ABSORPTION; INDUCED DEGRADATION; BACK-CONTACT; LEAD IODIDE; ANTIREFLECTION COATINGS; 20-PERCENT EFFICIENCY ⓘ Absorption coefficient; Bandgap; Crystals; Electron-hole pairs; Epitaxial lift-off; Heterojunction; Quantum efficiency ⓘ Cadmium telluride; Conversion efficiency; Copper compounds; Cost reduction; Gallium arsenide; II-VI semiconductors; III-V semiconductors; Indium phosphide; Industrial research; Perovskite; Perovskite solar cells; Selenium compounds; Semiconducting indium phosphide; Solar absorbers; Solar power generation; Absorber material; Absorption coefficients; Current technology; Electron hole pairs; Epitaxial liftoff; Industrial solar cells; Light absorbers; On currents; On-currents; Renewable Power; Heterojunctions ⓘ English 2023 2023-03 10.1016/j.rser.2022.113027 ⓘ 바로가기 바로가기 바로가기 바로가기
○ ○ Article ⓘ Inhibition of pyruvate dehydrogenase kinase 4 ameliorates kidney ischemia-reperfusion injury by reducing succinate accumulation during ischemia and preserving mitochondrial function during reperfusion see ⓘ Ischemia-reperfusion (IR) injury, a leading cause of acute kidney injury (AKI), is still without effective therapies. Succinate accumulation during ischemia followed by its oxidation during reperfusion leads to excessive reactive oxygen species (ROS) and severe kidney damage. Consequently, the targeting of succinate accumulation may represent a rational approach to the prevention of IR-induced kidney injury. Since ROS are generated primarily in mitochondria, which are abundant in the proximal tubule of the kidney, we explored the role of pyruvate dehydrogenase kinase 4 (PDK4),a mitochondrial enzyme, in IR-induced kidney injury using proximal tubule cell-specific Pdk4 knockout (Pdk4ptKO) mice. Knockout or pharmacological inhibition of PDK4 ameliorated IR-induced kidney damage. Succinate accumulation during ischemia, which is responsible for mitochondrial ROS production during reperfusion, was reduced by PDK4 inhibition. PDK4 deficiency established conditions prior to ischemia resulting in less succinate accumulation, possibly because of a reduction in electron flow reversal in complex II, which provides electrons for the reduction of fumarate to succinate by succinate dehydrogenase during ischemia. The administration of dimethyl succinate, a cell-permeable form of succinate, attenuated the beneficial effects of PDK4 deficiency, suggesting that the kidney-protective effect is succinate-dependent. Finally, genetic or pharmacological inhibition of PDK4 prevented IR-induced mitochondrial damage in mice and normalized mitochondrial function in an in vitro model of IR injury. Thus, inhibition of PDK4 represents a novel means of preventing IR-induced kidney injury, and involves the inhibition of ROS-induced kidney toxicity through reduction in succinate accumulation and mitochondrial dysfunction. ⓘ Oh, Chang Joo; Kim, Min-Ji; Lee, Ji-Min; Kim, Dong Hun; Kim, Il-Young; Park, Sanghee; Kim, Yeongmin; Lee, Kyung-Bok; Lee, Sang-Hee; Lim, Chae Won; Kim, Myeongjin; Lee, Jung -Yi; Pagire, Haushabhau S.; Pagire, Suvarna H.; Bae, Myung Ae; Chanda, Dipanjan; Thoudam, Themis; Khang, Ah Reum; Harris, Robert A.; Ahn, Jin Hee; Jeon, Jae-Han; Lee, In-Kyu ⓘ Kyungpook Natl Univ, Sch Med, Res Inst Aging & Metab, Daegu, South Korea; Kyungpook Natl Univ, Chilgok Hosp, Dept Internal Med, Daegu, South Korea; Kyungpook Natl Univ, Cell & Matrix Res Inst, Daegu, South Korea; Kyungpook Natl Univ, Grad Sch, Dept Biomed Sci, Daegu, South Korea; Gachon Univ, Coll Med, Dept Mol Med, Incheon, South Korea; Gachon Univ, Lee Gil Ya Canc & Diabet Inst, Korea Mouse Metab Phenotyping Ctr, Incheon, South Korea; Gachon Univ, Dept Exercise Rehabil, Incheon, South Korea; Gachon Univ, Dept Hlth Sci & Technol, GAIHST, Incheon, South Korea; Korea Basic Sci Inst, Ctr Res Equipment Dong 104, Cheongju, Chungbuk, South Korea; Daegu Catholic Univ, Grad Sch, Dept Med, Gyongsan, Gyeongbuk, South Korea; Gwangju Inst Sci & Technol, Dept Chem, Gwangju, South Korea; Korea Res Inst Chem Technol, Bio & Drug Discovery Div, Daejeon, South Korea; Pusan Natl Univ, Coll Med, Yangsan Hosp, Dept Internal Med, Yangsan, South Korea; Univ Kansas, Med Ctr, Dept Biochem & Mol Biol, Kansas City, KS USA; Kyungpook Natl Univ, Chilgok Hosp, Sch Med, Dept Internal Med, Daegu, South Korea; Kyungpook Natl Univ, Kyungpook Natl Univ Hosp, Sch Med, Dept Internal Med, Daegu, South Korea; Gwangju Inst Sci & Technol, Dept Chem, 123 Cheomdangwagi Ro, Gwangju 61005, South Korea; Kyungpook Natl Univ, Chilgok Hosp, Sch Med, Dept Internal Med, 807 Hoguk Ro, Daegu 41404, South Korea; Kyungpook Natl Univ, Kyungpook Natl Univ Hosp, Sch Med, Dept Internal Med, 130 Dongdeok Ro, Daegu 41944, South Korea ⓘ KHANG, AHREUM/JHV-0081-2023; Kim, Jong/J-2749-2012; Kim, Evelyn/IUM-2106-2023; Lee, In-Kyu/AAR-6374-2021; Lee, Ji Min/KCZ-2783-2024; thoudam, themis/ACM-3919-2022; Ahn, Jin/C-6122-2019 ⓘ 14049080600; 57206189095; 57211862625; 57223020477; 56395786700; 57209683110; 57221421587; 58554312500; 58743241400; 58158274300; 58158274200; 57195563161; 55599893000; 56716279400; 7005711682; 16416525900; 57192905626; 38861924800; 58710709100; 56714432600; 36910340400; 36071537600 ⓘ jhahn@gist.ac.kr;jeonjh@knu.ac.kr;leei@knu.ac.kr; ⓘ KIDNEY INTERNATIONAL ⓘ KIDNEY INT ⓘ 0085-2538 1523-1755 104 4 SCIE UROLOGY & NEPHROLOGY ⓘ 2023 14.8 2.8 8.15 2025-06-25 ⓘ 37 40 acute kidney failure; ischemia-reperfusion injury; mitochondrial dysfunction; pyruvate dehydrogenase kinase 4; reactive oxygen species; succinate accumulation ⓘ MALATE-ASPARTATE SHUTTLE; OXIDATIVE STRESS; DYSFUNCTION; TRANSPORT; PROTECTS ⓘ acute kidney failure; ischemia-reperfusion injury; mitochondrial dysfunction; pyruvate dehydrogenase kinase 4; reactive oxygen species; succinate accumulation ⓘ Animals; Ischemia; Kidney; Mice; Mice, Knockout; Mitochondria; Reactive Oxygen Species; Reperfusion; Reperfusion Injury; Succinic Acid; fumaric acid; gm 10395; messenger RNA; protein serine threonine kinase inhibitor; pyruvate dehydrogenase kinase 4; succinate dehydrogenase (ubiquinone); succinic acid; unclassified drug; pyruvate dehydrogenase kinase 4; reactive oxygen metabolite; succinic acid; animal cell; animal experiment; animal model; animal tissue; Article; bioaccumulation; chemoprophylaxis; controlled study; drug effect; enzyme activity; enzyme inhibition; in vitro study; kidney tubule cell; male; mitochondrial dynamics; mouse; nonhuman; protein expression; renal ischemia reperfusion injury; renal protection; reverse electron transport; upregulation; animal; ischemia; kidney; knockout mouse; mitochondrion; reperfusion; reperfusion injury ⓘ English 2023 2023-10 10.1016/j.kint.2023.06.022 ⓘ 바로가기 바로가기 바로가기 바로가기
○ ○ Article ⓘ A novel convex relaxation technique on affine transformed sampled-data control issue for fuzzy semi-Markov jump systems ⓘ This article investigates affine transformed sampled-data control problems for fuzzy semi-Markov jump systems (FSMJSs). First of all, in the novel fuzzy sampled-data control, an affine transformed membership function is introduced, which contributes to constructing the synchronous time scale grades of membership without any constraint condition. Then, by utilizing a mode-dependent Lyapunov function with the looped functions, a sufficient condition concerning the asymptotical stability of the closed-loop FSMJSs is established in the form of linear matrix inequality (LMI). Meanwhile, to solve parameterized LMI (PLMI), a novel convex relaxation technique is proposed, based on which less conservatism stabi-lization criteria of FSMJSs, and a maximum sampling interval with respect to sampled-data control are further derived. Finally, two examples are carried out to manifest numerically the validity of the raised method.(c) 2023 Elsevier Inc. All rights reserved. ⓘ Pan, X. Z.; Huang, J. J.; Lee, S. M. ⓘ Harbin Univ Sci & Technol, Sch Comp Sci & Technol, 52 Xuefu Rd, Harbin, Peoples R China; Harbin Univ Sci & Technol, Sch Automat, Heilongjiang Prov Key Lab Complex Intelligent Syst, 52 Xuefu Rd, Harbin, Peoples R China; Harbin Univ Sci & Technol, Sch Comp Sci & Technol, 52 Xuefu Rd, Harbin, Peoples R China; Kyungpook Natl Univ, Sch Elect & Elect Engn, Cyber Phys Syst & Control Lab, Daehak Ro 80, Daegu 41566, South Korea ⓘ Lee, Sangmoon/C-4502-2018 ⓘ 57201614117; 15069583900; 59510733500 ⓘ panxiaozhenvvip@163.com;jjhuangps@163.com;moony@knu.ac.kr; ⓘ APPLIED MATHEMATICS AND COMPUTATION ⓘ APPL MATH COMPUT ⓘ 0096-3003 1873-5649 451 SCIE MATHEMATICS, APPLIED ⓘ 2023 3.5 2.9 0.82 2025-06-25 ⓘ 4 4 Parameterized linear matrix inequalities; (PLMIs); Affine matched premises; Sampled-data control; Convex relaxation technique; Fuzzy semi-Markov jump system ⓘ STABILIZATION; STABILITY; MATRIX; MODEL ⓘ Affine matched premises; Convex relaxation technique; Fuzzy semi-Markov jump system; Parameterized linear matrix inequalities (PLMIs); Sampled-data control ⓘ Lyapunov functions; Markov processes; Membership functions; Relaxation processes; Robustness (control systems); Sampled data control systems; Affine matched premise; Convex relaxation; Convex relaxation technique; Fuzzy semi-markov jump system; Markov jump system; Parameterized linear matrix inequality; Relaxation techniques; Sampled-data control; Semi-Markov; Linear matrix inequalities ⓘ English 2023 2023-08-15 10.1016/j.amc.2023.128026 ⓘ 바로가기 바로가기 바로가기 바로가기
○ ○ Article ⓘ A semi-implicit semi-Lagrangian method for simulating immersed boundary motion under high inertia and elasticity ⓘ In this paper, we present an efficient and stable fractional-step 2D immersed boundary (IB) method for solving the interaction problems between bulk fluid and elastic interface, in particular, when the fluid inertia and the interfacial elasticity are the significant factors affecting its dynamics. In myriads of real-world applications, the effects of high inertia and elasticity are dominant. So the complex fluid dynamics under such harsh conditions is an important topic in computational physics and is inherently challenging due to high computational complexity. In turn, it requires to solve the governing equations of elastic interfacial motion in an implicit manner so that more stable simulations can be performed by relaxing the Courant-Friedrichs-Lewy (CFL) condition. The contributions of the proposed approach are three folds. First, an iteration free semi-Lagrangian method is employed in Navier-Stokes (NS) equations. Second, the elastic force acting along the interface is treated semi-implicitly in IB formulations. Both approaches improve the numerical stability associated with the high fluidic inertia and interfacial elasticity. Finally, to solve the resulting linear system, our novel idea is to transform the original 3-by 3 block matrix system into a reduced 2-by-2 block matrix system using a discrete projection operator in a staggered grid, and then explicitly represent the exact solution via the Schur complement of the Helmholtz operator. Owing to this feature, we refer to this proposed approach as reduced immersed boundary method (rIBM). We show that the two systems are equivalent in theory, whereas the conventional immersed boundary projection method (IBPM) modifies the discrete momentum equation in the original system. A series of numerical tests is conducted to confirm the stability of the rIBM using relatively larger time-step sizes, specifically with Reynolds number and inverse capillary number equal to or larger than approximately 1000. By estimating the computational time, the numerical efficiency of the proposed method is further verified in comparison with the conventional IBPM and the Crank-Nicolson scheme-based IB method. In conclusion, the proposed approach not only improves the numerical stability, but also increases the computational speed, suitable for solving more realistic problems. ⓘ Park, Sangbeom; Bak, Soyoon; Kim, Philsu; Seol, Yunchang ⓘ Kyungpook Natl Univ, Dept Math, Daegu 41566, South Korea; Sungkyunkwan Univ, Dept Math, Suwon 16419, South Korea; Sungkyunkwan Univ, Inst Basic Sci, Suwon 16419, South Korea; Korea Adv Inst Sci & Technol, Dept Math Sci, Daejeon 34141, South Korea ⓘ Bak, Soyoon/HSE-8486-2023 ⓘ 57374873000; 56450371300; 7402334786; 55277174800 ⓘ piaoxf76@gmail.com;jiya525@knu.ac.kr;kimps@knu.ac.kr;ycseol@skku.edu; ⓘ APPLIED MATHEMATICS AND COMPUTATION ⓘ APPL MATH COMPUT ⓘ 0096-3003 1873-5649 459 SCIE MATHEMATICS, APPLIED ⓘ 2023 3.5 2.9 0.2 2025-06-25 ⓘ 1 1 Immersed boundary method; Semi-implicit; Semi-Lagrangian method; Error correction method; Fluid inertia; Elasticity ⓘ LEVEL-SET METHOD; HIGH-ORDER; FLUID; FLOW; DYNAMICS; DEFORMATION; CONVERGENCE; SCHEME ⓘ Elasticity; Error correction method; Fluid inertia; Immersed boundary method; Semi-implicit; Semi-Lagrangian method ⓘ Computational efficiency; Error correction; Inverse problems; Iterative methods; Lagrange multipliers; Linear systems; Matrix algebra; Navier Stokes equations; Numerical methods; Reynolds number; Turbulent flow; Condition; Correction method; Error correction method; Errors correction; Fluid inertia; Immersed boundary; Immersed boundary methods; Interfacial elasticity; Semi-implicit; Semi-Lagrangian methods; Elasticity ⓘ English 2023 2023-12-15 10.1016/j.amc.2023.128269 ⓘ 바로가기 바로가기 바로가기 바로가기
○ ○ Article ⓘ LDHA Desuccinylase Sirtuin 5 as A Novel Cancer Metastatic Stimulator in Aggressive Prostate Cancer ⓘ Prostate cancer (PCa) is the most commonly diagnosed genital cancer in men worldwide. Around 80% of the patients who developed advanced PCa suffered from bone metastasis, with a sharp drop in the survival rate. Despite great efforts, the detailed mechanisms underlying castration-resistant PCa (CRPC) remain unclear. Sirtuin 5 (SIRT5), an NAD+-dependent desuccinylase, is hypothesized to be a key regulator of various cancers. However, compared to other SIRTs, the role of SIRT5 in cancer has not been extensively studied. Here, we revealed significantly decreased SIRT5 levels in aggressive PCa cells relative to the PCa stages. The correlation between the decrease in the SIRT5 level and the patient's reduced survival rate was also confirmed. Using quantitative global succinylome analysis, we characterized a significant increase in the succinylation at lysine 118 (K118su) of lactate dehydrogenase A (LDHA), which plays a role in increasing LDH activity. As a substrate of SIRT5, LDHA-K118su significantly increased the migration and invasion of PCa cells and LDH activity in PCa patients. This study reveals the reduction of SIRT5 protein expression and LDHA-K118su as a novel mechanism involved in PCa progression, which could serve as a new target to prevent CPRC progression for PCa treatment. ⓘ Kwon, Oh Kwang; Bang, In Hyuk; Choi, So Young; Jeon, Ju Mi; Na, Ann-Yae; Gao, Yan; Cho, Sam Seok; Ki, Sung Hwan; Choe, Youngshik; Lee, Jun Nyung; Ha, Yun-Sok; Bae, Eun Ju; Kwon, Tae Gyun; Park, Byung-Hyun; Lee, Sangkyu ⓘ Kyungpook Natl Univ, Pharmaceut Sci Res Inst, Plus KNU Multiom Based Creat Drug Res Team BK21, Coll Pharm, Daegu 41566, South Korea; Chonbuk Natl Univ, Dept Biochem & Mol Biol, Sch Med, Jeonju 54896, South Korea; Chosun Univ, Coll Pharm, Gwangju 61452, South Korea; Korea Brain Res Inst, Daegu 41068, South Korea; Kyungpook Natl Univ, Sch Med, Dept Urol, Daegu 41566, South Korea; Kyungpook Natl Univ Hosp, Dept Urol, Daegu 41566, South Korea; Chonbuk Natl Univ, Coll Pharm, Jeonju 54896, Jeonbuk, South Korea; Sungkyunkwan Univ, Sch Pharm, Suwon 16419, South Korea ⓘ ; Gao, Yan/GQO-7536-2022 ⓘ 55579791200; 57191485800; 57202918688; 57201351844; 57201530058; 58736921100; 57189215724; 8346836500; 22833254300; 16301364600; 35487226400; 36738653000; 15073765400; 7402834713; 57209046767 ⓘ tgkwon@knu.ac.kr;bhpark@jbnu.ac.kr;sangkyu@knu.ac.kr; ⓘ GENOMICS PROTEOMICS & BIOINFORMATICS ⓘ GENOM PROTEOM BIOINF ⓘ 1672-0229 2210-3244 21 1 SCIE GENETICS & HEREDITY ⓘ 2023 11.5 2.9 4.64 2025-06-25 ⓘ 43 38 Sirtuin 5; Lactate dehydrogenase A; Lysine succinylation; PCa progression ⓘ LACTATE-DEHYDROGENASE; CELL-PROLIFERATION; PROMOTES; INVASION; SUCCINYLATION; PROGRESSION; INHIBITION; MIGRATION ⓘ Lactate dehydrogenase A; Lysine succinylation; PCa progression; Sirtuin 5 ⓘ Humans; Lactate Dehydrogenase 5; Male; Prostatic Neoplasms; Sirtuins; lactate dehydrogenase A; sirtuin 5; lactate dehydrogenase A; sirtuin; Article; bioinformatics; bone metastasis; cancer growth; castration resistant prostate cancer; cell migration; controlled study; genital tract cancer; genomics; human; human cell; male; PC-3M cell line; prostate cancer; protein expression; protein expression level; proteomics; SILAC labeling; survival rate; Western blotting; chemistry; genetics; metabolism; prostate tumor ⓘ English 2023 2023-02 10.1016/j.gpb.2022.02.004 ⓘ 바로가기 바로가기 바로가기 바로가기
○ ○ Article ⓘ Novel Time-dependent Multi-omics Integration in Sepsis-associated Liver Dysfunction ⓘ The recently developed technologies that allow the analysis of each single omics have provided an unbiased insight into ongoing disease processes. However, it remains challenging to specify the study design for the subsequent integration strategies that can associate sepsis patho-physiology and clinical outcomes. Here, we conducted a time-dependent multi-omics integration (TDMI) in a sepsis-associated liver dysfunction (SALD) model. We successfully deduced the relation of the Toll-like receptor 4 (TLR4) pathway with SALD. Although TLR4 is a critical factor in sepsis progression, it is not specified in single-omics analyses but only in the TDMI analysis. This finding indicates that the TDMI-based approach is more advantageous than single-omics analyses in terms of exploring the underlying pathophysiological mechanism of SALD. Furthermore, TDMI-based approach can be an ideal paradigm for insightful biological interpretations of multi-omics datasets that will potentially reveal novel insights into basic biology, health, and diseases, thus allowing the identification of promising candidates for therapeutic strategies. ⓘ Na, Ann-Yae; Lee, Hyojin; Min, Eun Ki; Paudel, Sanjita; Choi, So Young; Sim, HyunChae; Liu, Kwang-Hyeon; Kim, Ki-Tae; Bae, Jong-Sup; Lee, Sangkyu ⓘ Kyungpook Natl Univ, Pharmaceut Sci Res Inst, Daegu 41566, South Korea; Seoul Natl Univ Sci & Technol, Dept Environm Engn, Seoul 01811, South Korea; Kyungpook Natl Univ, Coll Pharm, BK21 FOUR CommunityBased Intelligent Novel Drug D, Daegu 41566, South Korea; Sungkyunkwan Univ, Sch Pharm, Suwon 16419, South Korea ⓘ ; KIM, KI-TAE/AAX-3175-2020 ⓘ 57201530058; 57200522840; 57221692953; 57203320448; 57202918688; 57219098739; 55768214700; 57202074566; 16021543200; 57209046767 ⓘ sangkyu@skku.edu; ⓘ GENOMICS PROTEOMICS & BIOINFORMATICS ⓘ GENOM PROTEOM BIOINF ⓘ 1672-0229 2210-3244 21 6 SCIE GENETICS & HEREDITY ⓘ 2023 11.5 2.9 0.6 2025-06-25 ⓘ 4 4 Multi-omics; Omics technology; Sepsis-associated liver dysfunction; Single omics; Time-dependent integration ⓘ GENE-EXPRESSION; TECHNOLOGIES; METABOLOMICS; SERUM; RISK ⓘ Multi-omics; Omics technology; Sepsis-associated liver dysfunction; Single omics; Time-dependent integration ⓘ Animals; Genomics; Humans; Liver; Liver Diseases; Male; Metabolomics; Mice; Multiomics; Proteomics; Sepsis; Signal Transduction; Toll-Like Receptor 4; toll like receptor 4; toll like receptor 4; Article; clinical outcome; human; inflammation; KEGG; liquid chromatography-mass spectrometry; liver dysfunction; metabolomics; multiomics; omics; pathophysiology; protein fingerprinting; proteomics; real time polymerase chain reaction; RNA extraction; sepsis; signal transduction; transcriptomics; Western blotting; animal; complication; genetics; genomics; liver; liver disease; male; metabolism; mouse; multiomics; procedures ⓘ English 2023 2023-12 10.1016/j.gpb.2023.04.002 ⓘ 바로가기 바로가기 바로가기 바로가기
○ ○ Article ⓘ Radon transform with Gaussian beam: Theoretical and numerical reconstruction scheme ⓘ The Radon transform and its various types have been studied since its introduction by Jo-hann Radon in 1917. Since the Radon transform is an integral transform that maps a given function to its line integral, it has been studied in the field of computerized tomography, which deals with electromagnetic waves that primarily travel along straight lines, such as X-rays. However, in many laser optics applications, it is assumed that the laser beam is shaped like a Gaussian bell rather than a straight line. Therefore, in tomographic modali-ties using optical beams, such as optical projection tomography, images reconstructed with the inversion algorithms for the standard Radon transform are subject to a loss of qual-ity. To address this issue, one needs to consider theoretical inversion methods for Radon transforms with Gaussian beam kernels and associated numerical reconstruction methods. In this study, we consider a Radon transform with a Gaussian beam kernel (also known as the point spread function) and show the uniqueness of the inversion of this transform. Furthermore, we provide an accurate and stable numerical reconstruction algorithm us-ing the point spread function-sequential quadratic Hamiltonian scheme. Numerical exper-iments with disk and Shepp-Logan phantoms demonstrate that the proposed framework provides superior reconstructions compared to the traditional filtered back-projection al-gorithm. (c) 2023 Elsevier Inc. All rights reserved. ⓘ Roy, Souvik; Jeon, Gihyeon; Moon, Sunghwan ⓘ Univ Texas Arlington, Dept Math, Arlington, TX USA; Kyungpook Natl Univ, Sch Math, Daegu 41566, South Korea; Kyungpook Natl Univ, Coll Nat Sci, Dept Math, Daegu 41566, South Korea ⓘ ; Roy, Souvik/M-2513-2017 ⓘ 57190230329; 57220752866; 56063426100 ⓘ sunghwan.moon@knu.ac.kr; ⓘ APPLIED MATHEMATICS AND COMPUTATION ⓘ APPL MATH COMPUT ⓘ 0096-3003 1873-5649 452 SCIE MATHEMATICS, APPLIED ⓘ 2023 3.5 2.9 0 2025-06-25 ⓘ 0 0 Gaussian beam; Optical; Tomography; Radon transform; Reconstruction ⓘ IMAGE-RECONSTRUCTION ⓘ Gaussian beam; Optical; Radon transform; Reconstruction; Tomography ⓘ Computerized tomography; Gaussian distribution; Image reconstruction; Integral equations; Laser beams; Numerical methods; Optical transfer function; Radon; Gaussian bell; Integral transform; Line integrals; Numerical reconstruction; Optical-; Optics application; Point-Spread function; Radon Transform; Reconstruction; Tomographic; Gaussian beams ⓘ English 2023 2023-09-01 10.1016/j.amc.2023.128024 ⓘ 바로가기 바로가기 바로가기 바로가기
○ ○ Article ⓘ Actual NOX and SOX removal rates in the atmospheric environment of concrete permeable blocks containing TiO2 powders, coconut shell powders, and zeolite beads ⓘ This study examined actual nitrogen oxide (NOX) and sulfur oxide (SOX) removal rates of concrete permeable blocks in the atmospheric environment. To give the concrete permeable block a NOX and SOX removal function, TiO2 submicron particle or coconut shell powder was embedded in the surface layer, and zeolite bead was embedded in the base layer. Using an actual factory production line, concrete permeable block specimens were prepared by adding TiO2 submicron particles and coconut shell powder to the surface layer of the concrete permeable block. The prepared concrete permeable block specimens were placed in a parking lot, and then NOX and SOX removal rates were directly measured for 6 months on the concrete permeable block specimens placed in the parking lot. Test results showed that the clear day removal rates of NOX and SOX for the concrete permeable block specimens embedded with TiO2 submicron particles during the day was 84% and 70%, respectively. Compared to the concrete permeable blocks embedded with coconut shell powder, the NOx removal rate of the specimens embedded with TiO2 submicron particles was 1.45 times higher, while the SOx removal rate was similar. However, during cloudy days and nights, the NOX removal rate of the concrete permeable block specimens embedded with TiO2 submicron particles was zero. On the other hand, NOX and SOX removal rates of the concrete permeable block specimens embedded with coconut shell powder and zeolite bead were maintained at approximately 51% and 77% for 6 months, respectively, in the atmospheric environment regardless of weather and day light conditions. Consequently, the coconut shell powder added to the surface layer of the concrete permeable block is a practically promising material in reducing the NOX in the atmospheric environment regardless of weather and day light conditions. ⓘ Kim, Jong-Won; Mun, Ju-Hyun; Kim, Sanghee; Yang, Keun-Hyeok; Sim, Jae-Il; Jung, Yeon-Back; Lee, Dong-Eun ⓘ Kyonggi Univ, Grad Sch, Dept Architectural Engn, Suwon, Gyeonggi Do, South Korea; Kyonggi Univ, Dept Architectural Engn, Suwon, Gyeonggi Do, South Korea; Korea Disaster Prevent Safety Technol Co Ltd, Gwangju, Jeollanam Do, South Korea; Hyundai Engn & Construct, Seoul, South Korea; Kyungpook Natl Univ, Architecture Civil Environm & Energy Engn, Daegu, Gyeongsangbuk D, South Korea ⓘ ; Jung, Yeonback/KHX-9365-2024; Mun, Ju-Hyun/ISB-3859-2023; Kim, Jong/AAE-4958-2019; Kim, Sanghee/KHX-8168-2024 ⓘ 57222476276; 39862004200; 56577087300; 7404291695; 35073245100; 56076618300; 56605563300 ⓘ dbrdhddh1@gmail.com;mjh@kgu.ac.kr;sanghee0714@kgu.ac.kr;yangkh@kyonggi.ac.kr;safety-k@hanmail.net;caujyb@hanmail.net;dolee@knu.ac.kr; ⓘ CONSTRUCTION AND BUILDING MATERIALS ⓘ CONSTR BUILD MATER ⓘ 0950-0618 1879-0526 403 SCIE CONSTRUCTION & BUILDING TECHNOLOGY;ENGINEERING, CIVIL;MATERIALS SCIENCE, MULTIDISCIPLINARY ⓘ 2023 7.4 3.0 0.22 2025-06-25 ⓘ 2 2 Concrete permeable blocks; Coconut shell powder; Atmospheric environment; NOX; SOX ⓘ ⓘ Atmospheric environment; Coconut shell powder; Concrete permeable blocks; NO<sub>X</sub>; SO<sub>X</sub> ⓘ Nitrogen removal; Shells (structures); Titanium dioxide; Zeolites; Atmospheric environment; Coconut shell powders; Concrete permeable block; Light conditions; Oxides removal; Parking lots; Removal rate; Submicron particle; Sulfur oxide; Surface layers; Nitrogen oxides ⓘ English 2023 2023-11-03 10.1016/j.conbuildmat.2023.133032 ⓘ 바로가기 바로가기 바로가기 바로가기
○ ○ Article ⓘ Corrosion prevention of steel rebar embedded in the cement mortar under accelerated conditions: Combined effects of phosphate and chloride ions ⓘ The present work focuses on the role of different amounts i.e. 0.295 and 2.95 kg/m3 ammonium phosphate monobasic (NH4H2PO4: APM) inhibitor and 1.2 kg/m3 NaCl as admixtures in cement mortar under wetting-- drying accelerated condition to mitigate the corrosion of steel rebar. The results show that phosphate ions (from APM) react with NaCl and ordinary Portland cement (OPC) constituents to form Ca3(PO4)2 and Ca5(PO4)3Cl as hydration products, which led to make the cement mortar matrix dense and compact, and thus, improved the compressive strength after 28 days of water curing. Consequently, the phosphate ions in the cement mortar initiate the oxidation of embedded steel rebars immersed in 3.5 wt. % NaCl solution due to the formation of Fe (H2PO4)2, and FeHPO4 as intermediate. These could be transformed into stable and protective tertiary iron phosphate (FePO4) if optimum amount of phosphate ions is present but in the case of 0.295 kg/m3 APM, mostly phosphate ions consumed in the formation of Ca3(PO4)2 and Ca5(PO4)3Cl. Therefore, this sample became vulnerable to corrosion. On the other hand, 2.95 kg/m3 APM, the phosphate ions are significant and, thus, it helps to properly form the Ca3(PO4)2, Ca5(PO4)3Cl, FePO4 and maghemite (gamma-Fe2O3). ⓘ Tran, Duc Thanh; Lee, Han-Seung; Singh, Jitendra Kumar; Lee, Dong-Eun ⓘ Hanyang Univ, Dept Smart City Engn, 1271 Sa 3 Dong, Ansan 15588, South Korea; Hanyang Univ, Dept Architectural Engn, 1271 Sa 3 Dong, Ansan 15588, South Korea; Hanyang Univ, Innovat Durable Bldg & Infrastruct Res Ctr, Ctr Creat Convergence Educ, 1271 Sa 3 Dong, Ansan 15588, South Korea; Graph Era Deemed Univ, Dept Chem, Bell Rd, Dehra Dun 248002, Uttarakhand, India; Kyungpook Natl Univ, Sch Architecture Civil Environm & Energy, 1370 Sangyegk Dong, Daegu 702701, South Korea ⓘ ; Lee, HanSeung/E-9087-2013; Lee, Han-Seung/E-9087-2013; Singh, Jitendra/AAU-6579-2021 ⓘ 58043533100; 57956643400; 57197846307; 56605563300 ⓘ ercleehs@hanyang.ac.kr;jk200386@hanyang.ac.kr; ⓘ CONSTRUCTION AND BUILDING MATERIALS ⓘ CONSTR BUILD MATER ⓘ 0950-0618 1879-0526 365 SCIE CONSTRUCTION & BUILDING TECHNOLOGY;ENGINEERING, CIVIL;MATERIALS SCIENCE, MULTIDISCIPLINARY ⓘ 2023 7.4 3.0 0.78 2025-06-25 ⓘ 7 8 Steel; Corrosion; Eco-friendly corrosion inhibitor; Cement mortar; Electrochemical impedance spectroscopy (EIS); Scanning electron microscopy (SEM) ⓘ REINFORCED-CONCRETE; CARBON-STEEL; INHIBITORS; BEHAVIOR; NITRITE ⓘ Cement mortar; Corrosion; Eco-friendly corrosion inhibitor; Electrochemical impedance spectroscopy (EIS); Scanning electron microscopy (SEM); Steel ⓘ Compressive strength; Corrosion inhibitors; Corrosion prevention; Electrochemical corrosion; Electrochemical impedance spectroscopy; Hematite; Hydration; Ions; Mortar; Nitrogen compounds; Portland cement; Reaction intermediates; Sodium chloride; Steel corrosion; Cement mortars; Combined effect; Condition; Eco-friendly; Eco-friendly corrosion inhibitor; Electrochemical impedance spectroscopy; Electrochemical-impedance spectroscopies; Phosphate ions; Scanning electron microscopy; Steel rebars; Scanning electron microscopy ⓘ English 2023 2023-02-15 10.1016/j.conbuildmat.2022.130042 ⓘ 바로가기 바로가기 바로가기 바로가기
○ ○ Article ⓘ Mechanical characterization of recycled-PET fiber reinforced mortar composites treated with nano-SiO2 and mixed with seawater ⓘ The study investigated the use of polyethylene terephthalate (rPET) fibers for strengthening construction materials. The addition of 0.5 vol% rPET fibers to mortar was studied, but the smooth surface of rPET resulted in weak bonds with the mortar matrix, leading to a decreased interfacial transfer zone (ITZ) compared to the surrounding matrix. To address this issue, nano-particle and NaOH hydrolysis were used to improve the ITZ bond strength and frictional behavior. Additionally, surface treatment of rPET using NaOH and silane coating was performed to enhance the hydrophilicity and bond strength with the matrix. The effects of seawater on the material were also studied using XRD. Additionally, cemGEMS analysis was also conducted. The SEM was used to observe the degree of bonding at the ITZ between rPET and the mortar matrix. The study showed that adding 0.5 vol% of rPET fibers had a significant impact on the tensile strength and fracture energy of mortar, and the fiber dispersibility was a crucial factor in controlling its mechanical properties. The low-cost recycled PET fibers were also found to be effective as a reinforcing agent in seawater-mixed mortar for marine applications, increasing the mortar's fracture energy by 188-802%. Therefore, these fibers can be used in coastal structures requiring impactresistant non-metallic materials, such as wave-dissipating concrete blocks or marine concrete structures reinforced with non-corrosive materials like FRP. ⓘ Lee, Meeju; Kim, Kyeongjin; Chung, Chul-Woo; Kim, WooSeok; Jeong, Yoseok; Lee, Jaeha ⓘ Natl Korea Maritime & Ocean Univ, Dept Civil & Environm Engn, Busan 49112, South Korea; Natl Korea Maritime & Ocean Univ, Interdisciplinary Major Ocean Renewable Energy Eng, Busan 49112, South Korea; Pukyong Natl Univ, Div Architectural & Fire Protect Engn, Pusan 48513, South Korea; Chungnam Natl Univ, Dept Civil Engn, Daejeon 34134, South Korea; Kyungpook Natl Univ, Dept Construct & Disaster Prevent Engn, Sangju 37224, South Korea ⓘ ⓘ 57426304500; 55976314300; 35487131500; 56286036900; 54980727300; 57014428600 ⓘ jaeha@kmou.ac.kr; ⓘ CONSTRUCTION AND BUILDING MATERIALS ⓘ CONSTR BUILD MATER ⓘ 0950-0618 1879-0526 392 SCIE CONSTRUCTION & BUILDING TECHNOLOGY;ENGINEERING, CIVIL;MATERIALS SCIENCE, MULTIDISCIPLINARY ⓘ 2023 7.4 3.0 1.57 2025-06-25 ⓘ 12 14 Fracture energy; rPET fiber; Mortar; Nano -particle; Seawater; Recycling; Silane coating; XRD analysis ⓘ CONCRETE; PERFORMANCE; BEHAVIOR; SILICA; MICROSTRUCTURE; IMPACT; WASTE ⓘ Fracture energy; Mortar; Nano-particle; Recycling; rPET fiber; Seawater; Silane coating; XRD analysis ⓘ Bond strength (materials); Coatings; Fiber reinforced plastics; Fibers; Fracture; Fracture energy; Marine applications; Nanoparticles; Plastic bottles; Reinforced concrete; Seawater corrosion; Silica; Sodium hydroxide; Surface treatment; Tensile strength; X ray diffraction; Interfacial transfer; Mechanical characterizations; Mortar matrix; Nanoparti-cles; Pet fibres; Recycling; RPET fiber; Silane coatings; Transfer zones; XRD analysis; Mortar ⓘ English 2023 2023-08-15 10.1016/j.conbuildmat.2023.131882 ⓘ 바로가기 바로가기 바로가기 바로가기
○ ○ Article ⓘ Permanent deformation characteristics of expandable foam grout under cyclic loading ⓘ Expandable foam grout (EFG) is a novel flowable cementitious material for filling underground cavities. This study evaluates the permanent deformation behavior of EFGs under cyclic loading. EFG consists of cement, water, and admixture. EFG samples are mixed at a water-cement ratio of 100% and an admixture content of 5.6% to prepare cylindrical specimens cured at four different times. Sinusoidal loads with different maximum axial stresses are vertically applied. The permanent deformation of EFG increases with the number of load cycles but at a decreasing rate. A power function model is used to represent the relation between the permanent deformation and number of load cycles. The model generally matches the measured values but can overestimate the deformation at specific strain levels and curing times. The accumulated permanent deformation increases with the applied axial stress and decreases with longer curing times. The final permanent deformation decreases with the increase in the curing time, and the rate of final permanent deformation also decreases. A linear relationship is found between the final permanent deformation and unconfined compressive strength. These findings can help estimate the damage and durability of underground structures backfilled with highly flowable and expandable cementitious materials under cyclic loads. ⓘ Han, WooJin; Lee, Jong-Sub; Kang, Seonghun; Yun, Tae Sup; Byun, Yong-Hoon ⓘ Korea Univ, Sch Civil Environm & Architectural Engn, 145 Anam Ro, Seoul 136713, South Korea; Yonsei Univ, Sch Civil & Environm Engn, Seoul 03722, South Korea; Kyungpook Natl Univ, Sch Agr Civil & Bioind Engn, 80 Daehak Ro, Daegu 41566, South Korea ⓘ Byun, Yong-Hoon/JKI-8441-2023; Han, WooJin/KLZ-1352-2024; Yun, Tae/G-7988-2012; Lee, Jong-Sub/G-2752-2012; Kang, Seonghun/KHY-8069-2024 ⓘ 57191676149; 55690048400; 57192686353; 58521863600; 42761048000 ⓘ yhbyun@knu.ac.kr; ⓘ CONSTRUCTION AND BUILDING MATERIALS ⓘ CONSTR BUILD MATER ⓘ 0950-0618 1879-0526 398 SCIE CONSTRUCTION & BUILDING TECHNOLOGY;ENGINEERING, CIVIL;MATERIALS SCIENCE, MULTIDISCIPLINARY ⓘ 2023 7.4 3.0 0.78 2025-06-25 ⓘ 7 7 Cyclic loading; Expandable foam; Flowable fill; Permanent deformation ⓘ LOW-STRENGTH MATERIALS; CONCRETE; COMPONENTS; BEHAVIOR ⓘ Cyclic loading; Expandable foam; Flowable fill; Permanent deformation ⓘ Cements; Compressive strength; Curing; Grouting; Mortar; Underground structures; Axial stress; Cementitious materials; Curing time; Cyclic loading; Deformation Characteristics; Expandable foam; Flowable fill; Load cycle; Permanent deformations; Underground cavities; Cyclic loads ⓘ English 2023 2023-09-22 10.1016/j.conbuildmat.2023.132458 ⓘ 바로가기 바로가기 바로가기 바로가기
○ ○ Article ⓘ Prevalence and causative drugs of drug-induced Parkinsonism in pediatric patients ⓘ Although several studies provided evidence on the epidemiology of drug-induced Parkinsonism (DIP) and its causative drugs, it is still limited in pediatrics. This study aimed to investigate the prevalence and risk of DIP in pediatrics. We used the Health Insurance Review and Assessment Service-Pediatric Patients Sample in Korea between 2010 and 2017 to estimate the annual prevalence of DIP and causative drug use using a cross-sectional design. The risk of DIP associated with causative drugs was evaluated using a case-crossover design. Adjusted odds ratios (aOR) with 95% confidence intervals (CI) were calculated using a conditional logistic regression. A total of 2925 pediatric patients had diagnosed with DIP from 2010 to 2017. Most patients were aged between 12 and19 years old, and 99.8% had any diagnosis of mental health disorder (MHD). During the study period, the prevalence of DIP increased by 10.0-fold from 2010 to 2017. All causative drugs showed a corresponding increase in their use, with atypical antipsychotics being the most prominent (increase ratio, 2.07). For both in the prevalence of DIP and atypical antipsychotic use, the increment was much bigger in patients with non-psychotic MHD than that in patients with psychotic MHD. In the case-crossover study, antipsychotics showed the largest aOR with DIP. Risperidone among antipsychotics showed the highest risk for DIP (aOR = 7.09, 95% CI = 3.83-13.09), followed by aripiprazole (aOR = 5.03, 95% CI = 2.88-8.80). This study suggests that the increase in DIP prevalence in pediatric patients might be because of the increased use of atypical antipsychotics. ⓘ Jeon, Soo Min; Lee, Yu Jin; Kwon, Jin-Won ⓘ Jeju Natl Univ, Coll Pharm, Jeju, South Korea; Kyungpook Natl Univ, Coll Pharm, Based Intelligent Novel Drug Discovery Educ Unit, BK21 FOUR Community BK21, 80 Daehak Ro, Daegu 41566, South Korea; Kyungpook Natl Univ, Res Inst Pharmaceut Sci, 80 Daehak Ro, Daegu 41566, South Korea ⓘ ⓘ 57206855645; 58181715900; 16202951700 ⓘ jwkwon@knu.ac.kr; ⓘ EUROPEAN CHILD & ADOLESCENT PSYCHIATRY ⓘ EUR CHILD ADOLES PSY ⓘ 1018-8827 1435-165X 32 9 SCIE;SSCI PEDIATRICS;PSYCHIATRY;PSYCHOLOGY, DEVELOPMENTAL ⓘ 2023 6 3.0 0.24 2025-06-25 ⓘ 1 1 Antipsychotics; Parkinsonism; Adverse drug events; Case-crossover study ⓘ SEROTONIN REUPTAKE INHIBITORS; EXTRAPYRAMIDAL SYMPTOMS; RISK; ANTIDEPRESSANTS; ANTIPSYCHOTICS; TRENDS; CHILD ⓘ Adverse drug events; Antipsychotics; Case-crossover study; Parkinsonism ⓘ Antipsychotic Agents; Child; Cross-Over Studies; Cross-Sectional Studies; Humans; Parkinsonian Disorders; Prevalence; anticonvulsive agent; antiemetic agent; aripiprazole; atypical antipsychotic agent; carbamazepine; clonazepam; domperidone; escitalopram; fluoxetine; fluvoxamine; haloperidol; metoclopramide; mosapride; neuroleptic agent; olanzapine; quetiapine; risperidone; serotonin uptake inhibitor; sertraline; sulpiride; topiramate; trazodone; valproic acid; neuroleptic agent; Article; child; controlled study; cross-sectional study; crossover procedure; female; health insurance; human; human tissue; ICD-10; Korea; logistic regression analysis; major clinical study; male; medical information; mental disease; national health insurance; parkinsonism; pediatric patient; prevalence; psychosis; school child; parkinsonism; prevalence ⓘ English 2023 2023-09 10.1007/s00787-023-02207-7 ⓘ 바로가기 바로가기 바로가기 바로가기
○ ○ Article ⓘ Rheological behavior of zein biopolymer and stiffness characteristic of biopolymer treated soil ⓘ The modification of polymeric biomolecules to achieve improved cementation is important for their potential applications. This study presents the rheological behaviors of eco-friendly zein biopolymer and stiffness char-acteristics of biopolymer-treated soil under various solvent and curing conditions. The rheological and stiffness characteristics of zein biopolymer are evaluated in terms of shear stress, viscosity, and shear wave velocity. The time sensitivity, flow index, and microstructure of biopolymer gel are analyzed. The biopolymer gel generally exhibits a weakly non-Newtonian shear-thickening behavior, except for the specimen cured for 24 h under chamber condition. At a constant shear rate, the biopolymer gel shows a rheopexy behavior, which is charac-terized by an increase in viscosity over time. The shear wave velocity of biopolymer-treated soil increases with the curing period, up to 50 and 96 % under atmospheric and chamber conditions, respectively. The peak ab-sorption values for the hydroxyl functional group decrease significantly as the curing period and ethanol content increase. Furthermore, the microparticle sizes of the zein biopolymer gel decrease with increasing ethanol content. Therefore, understanding the stiffness characteristics of biopolymer-treated soil specimens for potential soil stabilization can be improved based on the rheological properties of zein biopolymer. ⓘ Babatunde, Quadri Olakunle; Yoon, Hyung-Koo; Byun, Yong-Hoon ⓘ Kyungpook Natl Univ, Sch Agr Civil & Bioind Engn, 80 Daehak Ro, Daegu 41566, South Korea; Daejeon Univ, Dept Construct & Disaster Prevent Engn, Daejeon 34520, South Korea ⓘ ; Byun, Yong-Hoon/JKI-8441-2023 ⓘ 58102290600; 21740165700; 42761048000 ⓘ yhbyun@knu.ac.kr; ⓘ CONSTRUCTION AND BUILDING MATERIALS ⓘ CONSTR BUILD MATER ⓘ 0950-0618 1879-0526 384 SCIE CONSTRUCTION & BUILDING TECHNOLOGY;ENGINEERING, CIVIL;MATERIALS SCIENCE, MULTIDISCIPLINARY ⓘ 2023 7.4 3.0 1.35 2025-06-25 ⓘ 11 12 Biopolymer; Elastic wave; Rheology; Soil stabilization; Zein ⓘ XANTHAN GUM BIOPOLYMER; CHITOSAN ⓘ Biopolymer; Elastic wave; Rheology; Soil stabilization; Zein ⓘ Acoustic wave velocity; Biomolecules; Biopolymers; Curing; Ethanol; Non Newtonian flow; Rheology; Shear flow; Shear stress; Shear waves; Soil mechanics; Soils; Stiffness; Viscosity; Wave propagation; Biopolymer gels; Chamber condition; Curing periods; Eco-friendly; Rheological behaviour; Shear wave velocity; Soil stabilization; Solvent conditions; Stiffness characteristics; Treated soils; Stabilization ⓘ English 2023 2023-06-27 10.1016/j.conbuildmat.2023.131466 ⓘ 바로가기 바로가기 바로가기 바로가기
○ ○ Article ⓘ Shear strength characteristics of two-layer geotextile reinforced with flowable fill ⓘ Geosynthetics have been applied in various engineering fields. This study investigates the shear strength of a twolayer geotextile reinforced with a flowable fill. Three types of geotextiles and a flowable fill are used to compare the shear strength characteristics. Direct shear tests on both unreinforced and reinforced geotextiles are performed on three geotextiles under three normal stresses for five curing periods. The experimental results show that the peak and residual shear strengths of the reinforced geotextiles are larger than those of the unreinforced geotextiles. A reinforced geotextile with a higher warp/weft density and crossing-over firmness factor shows significantly higher peak shear strength than the other two geotextiles. The peak and residual strength gains of the reinforced geotextiles depend on the geotextile type and curing period. The peak friction angles of the unreinforced and reinforced geotextiles cured for 28 days are influenced by the weave structure parameters. The two-layer geotextiles reinforced with flowable fill proposed in this study can be adequately used with a better understanding of their shear strength characteristics and influencing factors. ⓘ Son, Dong Geon; Byun, Yong-Hoon ⓘ Kyungpook Natl Univ, Sch Agr Civil & Bioind Engn, 80 Daehak Ro, Daegu 41566, South Korea ⓘ Byun, Yong-Hoon/JKI-8441-2023 ⓘ 58044845900; 42761048000 ⓘ yhbyun@knu.ac.kr; ⓘ CONSTRUCTION AND BUILDING MATERIALS ⓘ CONSTR BUILD MATER ⓘ 0950-0618 1879-0526 367 SCIE CONSTRUCTION & BUILDING TECHNOLOGY;ENGINEERING, CIVIL;MATERIALS SCIENCE, MULTIDISCIPLINARY ⓘ 2023 7.4 3.0 0.9 2025-06-25 ⓘ 8 8 Flowable fill; Geosynthetic; Reinforcement; Shear strength ⓘ FINITE-ELEMENT-ANALYSIS; MECHANICAL-PROPERTIES; FOUNDATION; BEHAVIOR ⓘ Flowable fill; Geosynthetic; Reinforcement; Shear strength ⓘ Curing; Geotextiles; Shear strength; Weaving; Curing periods; Direct shear test; Engineering fields; Flowable fill; Geosynthetics; Normal stress; Peak shear strength; Shears strength; Strength characteristics; Two-layer; Reinforcement ⓘ English 2023 2023-02-27 10.1016/j.conbuildmat.2022.130207 ⓘ 바로가기 바로가기 바로가기 바로가기
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