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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
○ ○ Article ⓘ Effect of silicon fertilizer treatment on nodule formation and yield in soybean (Glycine max L.) ⓘ Silicon application (Si) is considered beneficial for plant growth and development in both monocotyledons and dicotyledons, however its effect on root development and nodule formation in soybean is poorly understood. For this reason, we examined the effects of Si application on soybean (Glycine max L.) growth and its yield in field conditions. On 4 m x 5 m plots, we applied 0.08 kg/m(2) of commercial Si fertilizer incorporated into the soil at the time of planting and 2.0 mM of sodium metasilicate for foliar spraying when the plants reached V5 growth stage. Then, we measured various parameters of shoot and root morphology of the soybean plants during 2018 and 2019. In particular, image-based machine learning method was conducted to identify nodule formation. On Si application to the soil and leaves, we found an increase in nodule number and nodule size over the two years. Furthermore, root morphological traits were significantly changed in Si-treated soybean plants compared to control plants, including the root projected area, average root diameter, and average root link diameter. In the shoots, the net photosynthesis (P-N), transpiration rate (E), and stomatal conductance (g(s)) were also higher in Sitreated soybean plants than control plants. Finally, the yields of the Si-treated soybean plants were 21 % and 19 % higher in 2018 and 2019, respectively, than the control plants. Therefore, the improved photosynthesis and root morphological traits resulting from Si application led to an increased yield in soybean. ⓘ Tripathi, Pooja; Na, Chae-In; Kim, Yoonha ⓘ Kyungpook Natl Univ, Sch Appl Life Sci, Daegu 41566, South Korea; Gyeongsang Natl Univ, Dept Agron, Jinju 52828, South Korea ⓘ ⓘ 57215084745; 56182390700; 57224866763 ⓘ pooja@knu.ac.kr;nachaein@gnu.ac.kr;kyh1229@knu.ac.kr; ⓘ EUROPEAN JOURNAL OF AGRONOMY ⓘ EUR J AGRON ⓘ 1161-0301 1873-7331 122 SCIE AGRONOMY ⓘ 2021 5.722 10.6 2.91 2025-07-30 ⓘ 34 36 Nodule; Photosynthesis; Root morphology; Silicon; Yield ⓘ SYMBIOTIC NITROGEN-FIXATION; FUNCTIONAL-CHARACTERIZATION; ROOT-GROWTH; TRANSPORTER; PLANTS; IDENTIFICATION; RESISTANCE ⓘ Nodule; Photosynthesis; Root morphology; Silicon; Yield ⓘ Dicotyledoneae; Glycine max; Liliopsida; fertilizer; machine learning; morphology; nodulation; photosynthesis; root architecture; silicon; soybean; stomatal conductance; transpiration ⓘ English 2021 2021-01 10.1016/j.eja.2020.126172 ⓘ 바로가기 바로가기 바로가기 바로가기
○ ○ Article ⓘ Mechano-Actuated Light-Responsive Main-Chain Liquid Crystal Elastomers ⓘ Herein, a highly mechano-actuated light-responsive main-chain liquid crystal elastomer (LCE) was prepared using the two-stage thiol-acrylate Michael addition-photopolymerization (TAMAP) method with a reactive mesogenic mixture. This reactive mixture included a newly synthesized azobenzene-containing diacrylate reactive mesogen 4,4'-di(4-(acrylolylhexyloxy) benzoyloxy) azobenzene (D6OA), which exhibited a long mesogenic structure around the azobenzene bond. The monodomain main-chain azobenzene-containing LCE (M azo-LCE) film was prepared by mechanical drawing and visible-light curing the polydomain azo-LCE (P azo-LCE) film synthesized using the TAMAP method. M azo-LCE film showed approximately 30% contraction in length because of the trans-to-cis isomerization caused by ultraviolet (UV) irradiation, but it did not exhibit response to visible light because the long mesogenic structure of D6OA has a high energy barrier with respect to the cis-to-trans isomerization caused by visible light. However, the simple mechanical drawing of the M azo-LCE film induced the cis-to-trans isomerization. The alternating UV irradiation and mechanical drawing resulted in reversible trans-to-cis and cis-to-trans isomerizations for more than 10 cycles. The cis-to-trans/trans-to-cis isomerization and structural changes during UV irradiation and mechanical drawing were investigated via Raman spectroscopy and wide- and small-angle X-ray scatterings using a synchrotron radiation source. The azobenzene-containing chains in the layer were changed such that the staggered chains with extended trans isomers in the tilted layer (smectic C) were transformed into the chains with kinked cis isomers in the parallel-packed layer via UV irradiation, which were back to the original staggered extended chains with extended trans isomers in the tilted layer through mechanical drawing. The cis-to-trans isomerization via mechanical drawing can be attributed to the location of the azobenzene linkage in the main-chain backbone, but this has been rarely reported. The high actuation and simple recovery of the main-chain M azo-LCEs provide many application possibilities in various fields such as robotics, prosthetics, microfluids, data storage, and surface relief gratings. ⓘ Cho, Eun-hye; Luu, Khuong; Park, Soo-young ⓘ Kyungpook Natl Univ, Sch Appl Chem Engn, Polymer Nanomat Lab, Daegu 41566, South Korea ⓘ park, soo-young/N-3170-2017 ⓘ ⓘ psy@knu.ac.kr; ⓘ MACROMOLECULES ⓘ MACROMOLECULES ⓘ 0024-9297 1520-5835 54 12 SCIE POLYMER SCIENCE ⓘ 2021 6.057 10.6 2.11 2025-07-30 ⓘ 34 31 ⓘ POLYMER NETWORKS; PHOTOMECHANICAL RESPONSE; AZOBENZENE; GLASSY; PHOTOSWITCHES; MODULATION; CONVERSION; ALIGNMENT; BEHAVIOR; STORAGE ⓘ ⓘ Addition reactions; Azobenzene; Digital storage; Elastomers; Film preparation; Irradiation; Isomerization; Light; Liquid crystals; Mixtures; Photopolymerization; Synchrotron radiation; Uranium metallography; Vanadium metallography; X ray scattering; Cis-to-trans isomerization; High-energy barriers; Liquid crystal elastomers; Mechanical drawing; Reactive mixtures; Surface relief gratings; Synchrotron radiation source; Ultraviolet irradiations; Isomers ⓘ English 2021 2021-06-22 10.1021/acs.macromol.1c00088 ⓘ 바로가기 바로가기 바로가기 바로가기
○ ○ Article ⓘ Assessment of the Behavioural Response of Korean Water Deer (Hydropotes inermis argyropus) to Different Fence Heights ⓘ Simple Summary The present study aimed to investigate the success rate of fences and classify the behavioural responses of Korean water deer (Hydropotes inermis argyropus) to different fence heights. The dominant behaviours before the deer crossed the fences by performing vertical and running jumps were recession and rest when the fence heights were lower or higher than 1.2 m, respectively. The general threshold (fence height) for discriminating success or failure was 0.9 m; however, we recommend a fence height of 1.5 m, considering the cost and roadkill risk. Placing exit pathways for deer and eliminating possible resting areas outside fences are essential for reducing the number of successful jump attempts. Fences have been widely implemented to reduce the risk of wildlife-vehicle collisions, wildlife disease spread, and crop damage. To manufacture fences, it is imperative to assess the behavioural responses of the target species. Here, we investigated the success rate of fences and classified eight behavioural responses of Korean water deer (Hydropotes inermis argyropus) to different fence heights. We explored the association of 801 behavioural responses and defined a threshold based on 40 events by applying non-metric multidimensional scaling and a binary logistic generalised linear mixed model. With fences lower and higher than 1.2 m, recession and rest were the dominant behaviours, respectively, before the deer crossed the fences by performing vertical and running jumps. Considering all independent events, 0.9 m was the marginal threshold, with highly variable outliers over this value. Placing exit pathways for deer and eliminating possible resting areas outside fences are essential for reducing the number of successful jump attempts. The optimal fence height could differ based on conditional factors; however, we recommend a height of 1.5 m considering the cost and roadkill risk. In conclusion, exploring and classifying the behavioural responses of the target species may be critical for establishing appropriate fence protocols. ⓘ Park, Hee-Bok; Woo, Donggul; Choi, Tae Young; Hong, Sungwon ⓘ Natl Inst Ecol, Res Ctr Endangered Species, Yeongyang Gun 36531, South Korea; Natl Inst Ecol, Div Ecol Conservat, Seocheon Gun 33657, South Korea; Kyungpook Natl Univ, Dept Anim Sci & Biotechnol, Sangju 37224, South Korea; Kyungpook Natl Univ, Dept Horse Compan & Wild Anim Sci, Sangju 37224, South Korea ⓘ Hong, Sungwon/K-2809-2019; Park, Hee-Bok/IXD-9677-2023 ⓘ 57213039942; 56818594700; 56646736100; 56431586600 ⓘ marinecat80@nie.re.kr;martes@nie.re.kr;wildlife@nie.re.kr;shong@knu.ac.kr; ⓘ ANIMALS ⓘ ANIMALS-BASEL ⓘ 2076-2615 11 4 SCIE AGRICULTURE, DAIRY & ANIMAL SCIENCE;VETERINARY SCIENCES ⓘ 2021 3.231 10.7 0.68 2025-07-30 ⓘ 4 4 roadkill; fence; non-chemical capture technique; Hydropotes inermis argyropus; non-metric multidimensional scaling; generalised linear mixed model ⓘ WHITE-TAILED DEER; WILDLIFE; DESIGNS; JUMP ⓘ Fence; Generalised linear mixed model; Hydropotes inermis argyropus; Non-chemical capture technique; Non-metric multidimensional scaling; Roadkill ⓘ Article; behavior; deer; jumping; multidimensional scaling; nonhuman; running; water deer; wildlife ⓘ English 2021 2021-04 10.3390/ani11040938 ⓘ 바로가기 바로가기 바로가기 바로가기
○ ○ Article ⓘ Characteristics of High-Level Aminoglycoside-Resistant Enterococcus faecalis Isolated from Bulk Tank Milk in Korea ⓘ Simple Summary Aminoglycosides are used to treat various infections in veterinary and human medicine. However, with the emergence of high-level aminoglycoside resistance in human and food-producing animals, the synergism of aminoglycosides with beta-lactam or glycopeptide is being threatened. Moreover, the environmental mastitis-causing agent, enterococci, has emerged as a cause of nosocomial infection due to its antimicrobial resistance. Therefore, the purpose of this study was to investigate the characteristics of high-level aminoglycoside-resistant Enterococcus faecalis isolated from bulk tank milk in Korea. It showed that 185 (61.5%) isolates out of 301 were high-level aminoglycoside resistant, while 149 isolates were multidrug resistant. Enterococci, which are considered environmental mastitis-causing pathogens, have easily acquired aminoglycoside-resistant genes that encode various aminoglycoside-modifying enzymes (AME). Therefore, this study was conducted to compare the distribution of high-level aminoglycoside-resistant (HLAR) and multidrug-resistant (MDR) Enterococcus faecalis (E. faecalis) bacteria isolated from bulk tank milk in four dairy companies in Korea. Moreover, it analyzed the characteristics of their antimicrobial resistance genes and virulence factors. Among the 301 E. faecalis bacteria studied, 185 (61.5%) showed HLAR with no significant differences among the dairy companies. Furthermore, 129 (69.7%) of the 185 HLAR E. faecalis showed MDR without significant differences among companies. In contrast, HLAR E. faecalis from companies A, B, and C were significantly higher in resistance to the four classes than those in company D, which had the highest MDR ability against the three antimicrobial classes (p < 0.05). In addition, in the distribution of AME genes, 72 (38.9%) and 36 (19.5%) of the isolates carried both aac(6 ')Ie-aph(2 '')-la and ant(6)-Ia genes, and the ant (6)-Ia gene alone, respectively, with significant differences among the companies (p < 0.05). In the distribution of virulence genes, the ace (99.5%), efa A (98.9%), and cad 1 (98.4%) genes were significantly prevalent (p < 0.05). Thus, our results support that an advanced management program by companies is required to minimize the dissemination of antimicrobial resistance and virulence factors. ⓘ Kang, Hyo Jung; Yoon, Sunghyun; Kim, Koeun; Lee, Young Ju ⓘ Kyungpook Natl Univ, Coll Vet Med, Daegu 41566, South Korea; Kyungpook Natl Univ, Zoonoses Res Inst, Daegu 41566, South Korea; US FDA, Div Microbiol, Natl Ctr Toxicol Res, Jefferson, AR 72079 USA ⓘ ; Yoon, Sunghyun/AAL-4806-2021 ⓘ 57224364605; 57216037473; 57220805028; 56612134500 ⓘ sa01083@knu.ac.kr;goguma0707@gmail.com;kke02062@gmail.com;youngju@knu.ac.kr; ⓘ ANIMALS ⓘ ANIMALS-BASEL ⓘ 2076-2615 11 6 SCIE AGRICULTURE, DAIRY & ANIMAL SCIENCE;VETERINARY SCIENCES ⓘ 2021 3.231 10.7 1.18 2025-07-30 ⓘ 6 8 high-level aminoglycoside resistance; Enterococcus faecalis; bulk tank milk ⓘ ANTIMICROBIAL RESISTANCE; GENES; FOOD; MECHANISMS; FAECIUM; HUMANS; PIGS; COWS ⓘ Bulk tank milk; Enterococcus faecalis; High-level aminoglycoside resistance ⓘ aac(6'')Ie aph(2'') 1la protein; ace protein; ampicillin; ant(6) ia protein; aph(2'') Id protein; aph(200) ic protein; asa1 protein; bacterial protein; cad1 protein; catA protein; catB protein; cfr protein; chloramphenicol; ciprofloxacin; cylA protein; doxycycline; efaA protein; ermA protein; ermB protein; erythromycin; esp protein; fexA protein; gelE protein; gentamicin; mef protein; optrA protein; penicillin derivative; poxtA protein; rifampicin; streptomycin; tetL protein; tetM protein; tetO protein; tetracycline; unclassified drug; vancomycin; agar dilution; aminoglycoside resistance; antibiotic resistance; antibiotic sensitivity; Article; bacterial virulence; bacterium examination; bacterium identification; bacterium isolation; disk diffusion; Enterococcus faecalis; gene frequency; Korea; macrolide resistance; milk; minimum inhibitory concentration; multidrug resistance; nonhuman; polymerase chain reaction; prevalence; tetracycline resistance ⓘ English 2021 2021-06 10.3390/ani11061724 ⓘ 바로가기 바로가기 바로가기 바로가기
○ ○ Article ⓘ Enhanced Virulence of Aeromonas hydrophila Is Induced by Stress and Serial Passaging in Mice ⓘ Simple Summary Aeromonas hydrophila, which is an opportunistic zoonotic bacterium, has the ability to infect animals with injuries involving the condition of the aquatic environments. Factors including poor sanitation and water quality, stress, overcrowding, and rough handling can make animals more sensitive to infections and trigger outbreaks of A. hydrophila. A. hydrophila was previously isolated from an African black-footed penguin that died while in captivity at a zoo, following clinical signs of depression and anorexia, and in this study, we investigated the effect of stress and serial passaging in mice on A. hydrophila virulence. Serial passaging in mice enhanced the virulence of A. hydrophila, and A. hydrophila infection combined with administration of stress hormones or fasting increased mortality. Aeromonas hydrophila was isolated from an African black-footed penguin (Spheniscus demersus) that died while in zoo captivity. At necropsy, the virulence of A. hydrophila appeared to be enhanced by stress, so was assessed in the presence of in vitro and in vivo stressors and serial passaging in mice. Virulence genes from the isolate were amplified by PCR. In vitro assays were conducted to test the hemolytic activity, cytotoxicity, and effect of stress hormones on A. hydrophila virulence. In vivo assays were conducted to test the stress effect on mortality of A. hydrophila-infected mice and virulence in mice. Two virulence genes coding for hemolysin (ahh1) and aerolysin (aerA) were detected, and the cytotoxic potential of the isolate was demonstrated in baby hamster kidney and Vero cells. Some or all mice inoculated with A. hydrophila and exposed to stress hormones (epinephrine and norepinephrine) or low temperature died, while mice inoculated with A. hydrophila and exposed to fasting or agitation stressors or no stressors survived. We concluded that stress can be fatal in mice experimentally infected with A. hydrophila and that serial passaging in mice dramatically enhances the virulence of A. hydrophila. ⓘ Kim, Kyoo-Tae; Lee, Seung-Hun; Lee, Kyoung-Ki; Han, Jee Eun; Kwak, Dongmi ⓘ Anim Hlth Ctr Zoo Land, Daejeon O World Theme Pk, Daejeon 35073, South Korea; Chungbuk Natl Univ, Coll Vet Med, Cheongju 28644, South Korea; Anim & Plant Quarantine Agcy, Anim Dis Diagnost Div, Gimcheon 39660, South Korea; Kyungpook Natl Univ, Coll Vet Med, Daegu 41566, South Korea; Kyungpook Natl Univ, Cardiovasc Res Inst, Daegu 41944, South Korea ⓘ ⓘ 56680415000; 57203394416; 38163138800; 57214671240; 7007148758 ⓘ ktkim95@korea.kr;dvmshlee@chungbuk.ac.kr;naturelkk@korea.kr;jehan@knu.ac.kr;dmkwak@knu.ac.kr; ⓘ ANIMALS ⓘ ANIMALS-BASEL ⓘ 2076-2615 11 2 SCIE AGRICULTURE, DAIRY & ANIMAL SCIENCE;VETERINARY SCIENCES ⓘ 2021 3.231 10.7 1.01 2025-07-30 ⓘ 3 8 aerolysin; Aeromonas hydrophila; hemolysin; mice; stress; virulence ⓘ ⓘ Aerolysin; Aeromonas hydrophila; Hemolysin; Mice; Stress; Virulence ⓘ aerolysin; eosin; epinephrine; hematoxylin; hemolysin; noradrenalin; RNA 16S; stress hormone; virulence factor; Aeromonas hydrophila; animal cell; animal experiment; animal model; animal tissue; Article; autopsy; bacterial growth; bacterium identification; colony forming unit; controlled study; cytotoxicity; DNA extraction; female; Gram staining; hemolysis; hemolysis assay; histopathology; in vitro study; in vivo study; male; mortality; mouse; multiplex polymerase chain reaction; nonhuman; penguin; physiological stress; polymerase chain reaction; singleplex polymerase chain reaction ⓘ English 2021 2021-02 10.3390/ani11020508 ⓘ 바로가기 바로가기 바로가기 바로가기
○ ○ Article ⓘ Habitat Characteristics Coincidence of Dead and Living Long-Tailed Gorals (Naemorhedus caudatus) According to Extreme Snowfall ⓘ Simple Summary: The long-tailed goral (Naemorhedus caudatus Milne-Edwards) is a critically endangered herbivore in South Korea. From March to June in 2010, 24 animals were found to have died due to heavy snowfall in the Wangpi Stream basin. In this study, we hypothesized that gorals that died due to snowfall are low-status individuals that lived in the sub-optimal or non-suitable areas. The results suggested that the sites where dead gorals were found were highly related to typical goral habitats. The optimal goral habitats could become uninhabitable following heavy snowfall. Most of the dead animals were pregnant females or were young, implying that they could not escape their primary habitats due to lower mobility. Thus, when there is a climate catastrophe, the optimal goral habitats should be considered for rescue and artificial feeding. The long-tailed goral (Naemorhedus caudatus) is a critically endangered herbivore in South Korea. Despite government efforts to recover the population through reintroduction programs, the animal remains vulnerable to heavy snowfall. From March to June 2010, 24 animals were found dead due to heavy snowfall in the Wangpi Stream basin. In this study, we hypothesized that gorals that died due to snowfall are low-status individuals that lived in the sub-optimal or non-suitable areas. Using the occurrence data from extensive field surveys from 2008 to 2010 in the Wangpi Stream and the carcass location data, we (1) defined the goral habitat characteristics and (2) compared the habitat characteristics between dead and living gorals using ensemble species distribution modeling. The results suggested that the sites where dead gorals were found were highly related to typical goral habitats. These results implied that the optimal goral habitats could become uninhabitable following heavy snowfall. Most of the dead animals were pregnant females or were young, implying that they could not escape their primary habitats due to lower mobility. Thus, when there is a climate catastrophe, the optimal goral habitats should be considered for rescue and artificial feeding. ⓘ Park, Hee-Bok; Hong, Sungwon ⓘ Natl Inst Ecol, Res Ctr Endangered Species, Restorat Res Team Mammals, Yeongyang 36531, South Korea; Kyungpook Natl Univ, Dept Anim Sci & Biotechnol, Sangju 37224, South Korea; Kyungpook Natl Univ, Dept Horse Compan & Wild Anim Sci, Sangju 37224, South Korea ⓘ Hong, Sungwon/ADW-3622-2022; Park, HeeBok/IXD-9677-2023 ⓘ 57213039942; 56431586600 ⓘ marinecat80@nie.re.kr;shong@knu.ac.kr; ⓘ ANIMALS ⓘ ANIMALS-BASEL ⓘ 2076-2615 11 4 SCIE AGRICULTURE, DAIRY & ANIMAL SCIENCE;VETERINARY SCIENCES ⓘ 2021 3.231 10.7 0.85 2025-07-30 ⓘ 7 7 survival; climate change; population viability analysis; ensemble species distribution model ⓘ FOOD-HABITS; HIERARCHY; SANCTUARY; SELECTION; MODELS ⓘ Climate change; Ensemble species distribution model; Population viability analysis; Survival ⓘ adult; animal experiment; article; artificial feeding; carcass; caudate nucleus; climate change; controlled study; disaster; female; field study; habitat; human; nonhuman; pregnancy; species distribution ⓘ English 2021 2021-04 10.3390/ani11040997 ⓘ 바로가기 바로가기 바로가기 바로가기
○ ○ Article ⓘ Identification of Zoonotic Balantioides coli in Pigs by Polymerase Chain Reaction-Restriction Fragment Length Polymorphism (PCR-RFLP) and Its Distribution in Korea ⓘ Simple Summary Balantioides coli is a protozoan parasite that can infect humans, and its main reservoir is pigs. Recent studies suggested that one of B. coli variants, named variant A, has zoonotic potential. Previous studies have reported B. coli infection in pigs in different countries; however, the prevalence of the zoonotic variant is limited due to a lack of molecular information. In this study, we developed a molecular technique-based method that could differentiate B. coli variant A from B without sequence analysis. Using the method, 174/188 (94.6%) pig fecal samples collected in domestic pigs in Korea were positive for B. coli, and of the samples, 62 (33.7%) were the zoonotic variant. To our knowledge, this is the first study to develop a method to differentiate B. coli variants A and B without sequence analysis and to assess the molecular epidemiology of B. coli in pigs. Balantioides coli is a zoonotic protozoan parasite whose main reservoir is pigs. Recent studies have shown that B. coli variant A but not B has zoonotic potential. While B. coli infection has been reported in different animals and countries, the prevalence of the zoonotic variant is limited due to a lack of molecular information. Therefore, this study investigated the prevalence of B. coli in domestic pigs in Korea and assessed its zoonotic potential. A total of 188 pig fecal samples were collected from slaughterhouses in Korea. B. coli was identified by microscopy and molecular methods. B. coli was identified in 79 (42.9%) and 174 (94.6%) samples by microscopy and polymerase chain reaction (PCR), respectively. This study also developed a PCR-restriction fragment length polymorphism (PCR-RFLP) method to differentiate B. coli variant A from B without sequence analysis. Using this method, 62 (33.7%) and 160 (87.0%) samples were positive for variants A and B, respectively, and 48 (26.1%) samples were co-infected with both variants. Sequence and phylogenetic analyses showed a high genetic diversity of B. coli in pigs in Korea. To our knowledge, this is the first study to develop a method to differentiate B. coli variants A and B without sequence analysis and to assess the molecular epidemiology of B. coli in pigs. Continuous monitoring of zoonotic B. coli in pigs should be performed as pigs are the main source of human balantidiasis. ⓘ Byun, Jae-Won; Park, Jung-Hyun; Moon, Bo-Youn; Lee, Kichan; Lee, Wan-Kyu; Kwak, Dongmi; Lee, Seung-Hun ⓘ Anim & Plant Quarantine Agcy, Gimcheon 39660, South Korea; Chungbuk Natl Univ, Coll Vet Med, Cheongju 28644, South Korea; Kyungpook Natl Univ, Coll Vet Med, Daegu 41566, South Korea ⓘ ⓘ 35075815400; 57252920600; 57209452048; 56191094900; 56164987700; 7007148758; 57203394416 ⓘ jaewon8911@korea.kr;david0132@naver.com;qiamby@korea.kr;noanoa33@korea.kr;wklee@cbu.ac.kr;dmkwak@knu.ac.kr;dvmshlee@chungbuk.ac.kr; ⓘ ANIMALS ⓘ ANIMALS-BASEL ⓘ 2076-2615 11 9 SCIE AGRICULTURE, DAIRY & ANIMAL SCIENCE;VETERINARY SCIENCES ⓘ 2021 3.231 10.7 1.86 2025-07-30 ⓘ 10 12 Balantioides coli; Balantidium coli; diagnosis; zoonosis; pig; protozoa; PCR-RFLP ⓘ BALANTIDIUM-COLI; INTESTINAL PARASITES; RISK-FACTORS; PREVALENCE; LITOSTOMATEA; INFECTION; PROTOZOA ⓘ Balantidium coli; Balantioides coli; Diagnosis; PCR-RFLP; Pig; Protozoa; Zoonosis ⓘ animal experiment; Article; balantidiasis; Balantioides coli; DNA extraction; feces; feces analysis; genetic polymorphism; genetic variability; genotype; host pathogen vector interaction; Korea; maximum likelihood method; microscopy; molecular cloning; molecular diagnosis; molecular epidemiology; nonhuman; phylogeny; pig; polymerase chain reaction restriction fragment length polymorphism; prevalence; sequence analysis ⓘ English 2021 2021-09 10.3390/ani11092659 ⓘ 바로가기 바로가기 바로가기 바로가기
○ ○ Article ⓘ Molecular Characteristics of Enterococcus faecalis and Enterococcus faecium from Bulk Tank Milk in Korea ⓘ Simple Summary Enterococci can be an opportunistic pathogen in milk, which can easily disseminate antimicrobial resistance and virulence genes. The purpose of this study was to characterize and compare the enterococci isolates from samples of bulk tank milk obtained from four dairy companies in Korea to prevent the spread of pathogenic and antimicrobial-resistant enterococci in dairy companies. The results demonstrated various degrees of antimicrobial resistance and virulence-factor distribution in enterococci from bulk tank milk in Korea and support the assessment that pathogens from bulk tank milk can also become a reservoir for dissemination of antimicrobial resistance and virulence factors through cross-contamination processes. Enterococci are considered to be environmental mastitis-causing pathogens that can easily spread antimicrobial resistance or virulence genes via horizontal transfer. In this study, the molecular characteristics of enterococci from bulk tank milk were investigated to assess the importance of dairy herd management. A total of 338 enterococci (305 Enterococcus faecalis and 33 Enterococcus faecium) were isolated from 1584 batches of bulk tank milk samples from 396 farms affiliated with four dairy companies in Korea, and significant differences (40.6-79.7%) (p < 0.05) in the prevalence of enterococci were observed in the samples from different companies. Enterococci showed the highest resistance to tetracycline (TET) (73.4%), followed by doxycycline (DOX) (49.7%) and erythromycin (ERY) (46.2%), while two enterococci isolates showed resistance to vancomycin (VAN). Among 146 tetracycline (TET) and ERY-resistant enterococci, each 50 (19.4%) enterococci carried combination-resistance and transposon gene types erm(B) + tet(M) + IntTn and erm(B) + tet(L) + tet(M) + IntTn, respectively. The virulence genes such as ace (99.0%), efaA (97.7%), cad1 (95.7%), and gelE (85.9%) were highly conserved in E. faecalis and significantly predominated over E. faecium (p < 0.001). Our results indicate that pathogens from bulk tank milk can also become a reservoir for the dissemination of antimicrobial resistance and virulence factors through cross-contamination processes. ⓘ Yoon, Sunghyun; Lee, Young Ju ⓘ US FDA, Div Microbiol, Natl Ctr Toxicol Res, Jefferson, AR 72079 USA; Kyungpook Natl Univ, Coll Vet Med, Daegu 41566, South Korea; Kyungpook Natl Univ, Zoonoses Res Inst, Daegu 41566, South Korea ⓘ Yoon, Sunghyun/AAL-4806-2021 ⓘ 57216037473; 56612134500 ⓘ sungyoon@knu.ac.kr;youngiu@knu.ac.kr;youngju@knu.ac.kr; ⓘ ANIMALS ⓘ ANIMALS-BASEL ⓘ 2076-2615 11 3 SCIE AGRICULTURE, DAIRY & ANIMAL SCIENCE;VETERINARY SCIENCES ⓘ 2021 3.231 10.7 3.04 2025-07-30 ⓘ 19 19 bulk tank milk; Enterococcus; antimicrobial resistance; transposon; virulence ⓘ TETRACYCLINE RESISTANCE; VIRULENCE DETERMINANTS; DAIRY; IDENTIFICATION; GENES; LEVEL ⓘ Antimicrobial resistance; Bulk tank milk; Enterococcus; Transposon; Virulence ⓘ chloramphenicol; ciprofloxacin; doxycycline; erythromycin; macrolide; tetracycline; vancomycin; virulence factor; agricultural land; antibiotic resistance; antibiotic sensitivity; Article; contamination; controlled study; dairy cattle; Enterococcus faecalis; Enterococcus faecium; fluoroquinolone resistance; human; infectious agent; Korea; major clinical study; nonhuman; prevalence; quality control; Staphylococcus aureus; tetracycline resistance; transposon; vancomycin resistance; virulence ⓘ English 2021 2021-03 10.3390/ani11030661 ⓘ 바로가기 바로가기 바로가기 바로가기
○ ○ Article ⓘ Rapid and Non-Destructive Monitoring of Moisture Content in Livestock Feed Using a Global Hyperspectral Model ⓘ Simple Summary Moisture content is an important parameter for monitoring the quality of feed and feed materials as its established ranges serve as markers for safe storage, mixing, and feeding animals. The moisture content of feed materials changes very rapidly and necessitates rapid measurement. Current moisture content measurement methods are time-consuming, destructive, and require specialized skills. This often causes reduced and/or delayed testing, which results in the spoilage of feed and feed materials. Additionally, the improper balance of dry matter intake which is inversely proportional to moisture content often causes metabolic diseases for animals consuming the diet. To solve these, we have developed a rapid and non-destructive global hyperspectral model that could quantify moisture content in feed materials. Our results show that the developed model is robust, could provide a method to measure the distribution of moisture in feed, and has potential for implementation in a commercial setting. The dry matter (DM) content of feed is vital in cattle nutrition and is inversely correlated with moisture content. The established ranges of moisture content serve as a marker for factors such as safe storage limit and DM intake. Rapid changes in moisture content necessitate rapid measurements. A rapid and non-destructive global model for the measurement of moisture content in total mixed ration feed and feed materials was developed. To achieve this, we varied and measured the moisture content in the feed and feed materials using standard methods and captured their images using a hyperspectral imaging (HSI) system in the spectral range of 1000-2500 nm. The spectral data from the samples were extracted and preprocessed using seven techniques and were used to develop a global model using partial least squares regression (PLSR) analysis. The range preprocessing technique had the best prediction accuracy (R-2 = 0.98) and standard error of prediction (2.59%). Furthermore, the visual assessment of distribution in moisture content made possible by the generated PLSR-based moisture content mapped images could facilitate precise formulation. These applications of HSI, when used in commercial feed production, could help prevent feed spoilage and resultant health complications as well as underperformance of the animals from improper DM intake. ⓘ Uyeh, Daniel Dooyum; Kim, Juntae; Lohumi, Santosh; Park, Tusan; Cho, Byoung-Kwan; Woo, Seungmin; Lee, Won Suk; Ha, Yushin ⓘ Kyungpook Natl Univ, Dept Bioind Machinery Engn, Daegu 41566, South Korea; Kyungpook Natl Univ, Upland Field Machinery Res Ctr, Daegu 41566, South Korea; Kyungpook Natl Univ, Smart Agr Innovat Ctr, Daegu 41566, South Korea; Chungnam Natl Univ, Coll Agr & Life Sci, Dept Biosyst Machinery Engn, 99 Daehak Ro, Daejeon 34134, South Korea; Univ Florida, Dept Agr & Biol Engn, Gainesville, FL 32611 USA ⓘ Lee, Won Suk/A-9824-2013; Kim, Juntae/HII-3041-2022; Cho, Byoung-Kwan/AAB-7558-2022; Park, Tusan/C-2057-2012 ⓘ 57194449611; 57203059843; 56368199400; 57202780408; 7401747466; 57192074884; 57201296889; 57192072314 ⓘ uyehdooyum@gmail.com;biosch94@gmail.com;Santosh.sanny123@gmail.com;tusan.park@knu.ac.kr;chobk@cnu.ac.kr;woosm7571@gmail.com;wslee@ufl.edu;yushin72@knu.ac.kr; ⓘ ANIMALS ⓘ ANIMALS-BASEL ⓘ 2076-2615 11 5 SCIE AGRICULTURE, DAIRY & ANIMAL SCIENCE;VETERINARY SCIENCES ⓘ 2021 3.231 10.7 1.01 2025-07-30 ⓘ 6 8 dairy cattle; dry matter intake; feed materials; metabolic diseases; multivariate analyses; precision feed formulation; rapid and non-destructive measurement; safe storage; total mixed ration ⓘ SORTING BEHAVIOR; WATER; QUALITY; SENSOR; GRAIN; NIR; TEMPERATURE; GROWTH ⓘ Dairy cattle; Dry matter intake; Feed materials; Metabolic diseases; Multivariate analyses; Precision feed formulation; Rapid and non-destructive measurement; Safe storage; Total mixed ration ⓘ algorithm; Article; clinical assessment; dairy cattle; dry matter intake; feeding; food intake; hyperspectral imaging; image quality; limit of detection; livestock; mathematical analysis; measurement accuracy; metabolic disorder; moisture; nonhuman; partial least squares regression; prediction; quantitative structure activity relation; signal noise ratio; task performance; validation process; visual field ⓘ English 2021 2021-05 10.3390/ani11051299 ⓘ 바로가기 바로가기 바로가기 바로가기
○ ○ Article ⓘ Robust Three-Dimensional (3D) Expansion of Bovine Intestinal Organoids: An In Vitro Model as a Potential Alternative to an In Vivo System ⓘ Simple Summary The ability to recapitulate stem cells' self-organising potential, creating three-dimensional (3D) structures of stem cells, has revolutionised various fields. Recently, in vitro 3D organoid systems are now used as alternative research tools because they serve the same purpose as in vivo systems. In the present study, we developed bovine intestinal organoids based on a 3D culture system and evaluated their characteristics. These bovine intestinal organoids, used in an in vitro model as a potential alternative to an in vivo system, hold great promise for further potential use in determining disease-modelling-based host-pathogen interactions and nutritional research for feed efficiency measurements. Intestinal organoids offer great promise for disease-modelling-based host-pathogen interactions and nutritional research for feed efficiency measurement in livestock and regenerative medicine for therapeutic purposes. However, very limited studies are available on the functional characterisation and three-dimensional (3D) expansion of adult stem cells in livestock species compared to other species. Intestinal crypts derived from intestinal organoids under a 3D culture system from the small intestine in adult bovine were successfully established and characterised for functionality testing, including the cellular potentials and genetic properties based on immunohistochemistry, immunocytochemistry, epithelial barrier permeability assay, QuantSeq 3 ' mRNA-Seq. data and quantitative reverse transcription-polymerase chain reaction. Intestinal organoids were long-term cultivated over several passages of culture without loss of the recapitulating capacity of crypts, and they had the specific expression of several specific markers involved in intestinal stem cells, intestinal epithelium, and nutrient absorption. In addition, they showed the key functionality with regard to a high permeability for compounds of up to FITC-dextran 4 kDa, while FITC-dextran 40 kDa failed to enter the organoid lumen and revealed that the genetic properties of bovine intestinal organoids were highly similar to those of in vivo. Collectively, these results provide a reliable method for efficient isolation of intestinal crypts from the small intestine and robust 3D expansion of intestinal organoids in adult bovine and demonstrate the in vitro 3D organoids mimics the in vivo tissue topology and functionality. Finally, intestinal organoids are potential alternatives to in vivo systems and will be facilitated as the practical model to replace animal experiments for various purposes in the fields of animal biotechnology. ⓘ Lee, Bo-Ram; Yang, Hyeon; Lee, Sang-In; Haq, Inamul; Ock, Sun-A; Wi, Hayeon; Lee, Hwi-Cheul; Lee, Poongyeon; Yoo, Jae-Gyu ⓘ Rural Dev Adm, Anim Biotechnol Div, Natl Inst Anim Sci, Wanju Gun 55365, South Korea; Kyungpook Natl Univ, Dept Anim Biotechnol, Sangju Si 37224, South Korea; Rural Dev Adm, Planning & Coordinat Div, Natl Inst Anim Sci, Wanju Gun 55365, South Korea ⓘ Yoo, Jae Gyu/N-5129-2018; Yoo, Jae/AAN-7908-2021 ⓘ 56124581700; 57200959629; 57203597336; 57226123796; 6603398912; 57219310124; 8398487700; 57710107500; 8708643600 ⓘ mir88@korea.kr;yh0415@korea.kr;silee78@knu.ac.kr;inam7353@gmail.com;ocksa@korea.kr;why7829@korea.kr;hclee@korea.kr;pylee@korea.kr;vetjack@korea.kr; ⓘ ANIMALS ⓘ ANIMALS-BASEL ⓘ 2076-2615 11 7 SCIE AGRICULTURE, DAIRY & ANIMAL SCIENCE;VETERINARY SCIENCES ⓘ 2021 3.231 10.7 2.37 2025-07-30 ⓘ 20 18 bovine; intestinal stem cells; organoid; characterisation; gene expression ⓘ NICHE; COLON; GENE ⓘ Bovine; Characterisation; Gene expression; Intestinal stem cells; Organoid ⓘ bile acid receptor; BMI1 protein; chromogranin A; ephrin receptor B2; F actin; fluorescein isothiocyanate dextran; G protein coupled receptor kinase 5; glucagon like peptide 1; glucose transporter 2; glycoprotein; hepatocyte nuclear factor 3gamma; hepatocyte nuclear factor 4alpha; mucin 2; olfactomedin 4; peptide transporter 1; pleckstrin; receptor; sodium glucose cotransporter 1; transcription factor; transcription factor Sox9; unclassified drug; uvomorulin; animal cell; animal experiment; animal tissue; Article; bovine; bovine model; cell membrane permeability; controlled study; cryopreservation; differential gene expression; gene expression; gene expression profiling; histology; illumina sequencing; immunocytochemistry; immunohistochemistry; intestinal organoid; intestinal stem cell; intestine crypt; molecular library; nonhuman; organ culture; real time reverse transcription polymerase chain reaction; RNA isolation; stem cell culture; stem cell expansion; three dimensional cell culture; tissue differentiation; tissue structure; transcription factor ASCL2 ⓘ English 2021 2021-07 10.3390/ani11072115 ⓘ 바로가기 바로가기 바로가기 바로가기
○ ○ Article ⓘ Servitization experience measurement and the effect of servitization experience on brand resonance and customer retention ⓘ Servitization, the convergence between new services with the existing products, creates significant value-in-use for both customers and firms. The current study develops measures of servitization experience based on the service-dominant logic and investigates their effect on customer retention, mediated by value-in-use of servitization and brand resonance. First, servitization measures were developed across five stages. Next, the effect of servitization experiences on customer retention was demonstrated. The results show that integrated servitization experience, customized servitization experience, relational servitization experience, and playful servitization experience are the measures of servitization experience, and this servitization experience has a positive influence on customer retention. Additionally, value-in-use of servitization and brand resonance fully and serially mediated the effect of servitization experience on customer retention. Servitization measures help scholars and marketers understand the importance of servitization experience and provide an empirical demonstration of the effect of servitization experience on customers and firms. ⓘ Jang, Kyeong Kook; Bae, Joonheui; Kim, Kyung Hoon ⓘ Changwon Natl Univ, Sarim Dong, Gyeongsangnam D, South Korea; Kyungpook Natl Univ, Sch Business Adm, Daegu, South Korea ⓘ ; Bae, Joonheui/JXM-6789-2024 ⓘ 57216151498; 57202349513; 55710559700 ⓘ regina721@knu.ac.kr; ⓘ JOURNAL OF BUSINESS RESEARCH ⓘ J BUS RES ⓘ 0148-2963 1873-7978 130 SSCI BUSINESS ⓘ 2021 10.969 10.7 1.35 2025-07-30 ⓘ 40 42 Servitization; Value-in-use; Service-dominant logic; Social identity theory ⓘ REMOTE MONITORING TECHNOLOGY; PRODUCT-SERVICE SYSTEMS; BUSINESS MODEL; DOMINANT LOGIC; MANUFACTURING FIRMS; RESEARCH PRIORITIES; IDENTITY THEORY; BIG DATA; IMPACT; CAPABILITIES ⓘ Service-dominant logic; Servitization; Social identity theory; Value-in-use ⓘ ⓘ English 2021 2021-06 10.1016/j.jbusres.2020.03.012 ⓘ 바로가기 바로가기 바로가기 바로가기
○ ○ Article ⓘ The Effects of Androstenone on the Plasma Serotonin, β-Endorphin, and Cortisol Concentrations in Thoroughbred Horses ⓘ Simple Summary The development of horse managing tools is needed to prevent accidents and to improve welfare for domestic horses because the safety hazards for people who are exposed to horses are well documented. Androstenone, a pheromone secreted from boars, changes the behavior of dogs to become less excited. In horses, a previous study showed that a specific receptor for androstenone was expressed in the vomeronasal organ and nasal cavity. Horses treated with androstenone also showed more compliant behaviors. Thus, this study was conducted to investigate the mechanism of androstenone for changing horse behaviors. The change in the plasma concentrations of serotonin, beta-endorphin, and cortisol in response to the treatment of androstenone was evaluated using an immunoassay. The results of this study demonstrated that androstenone may control the neuroendocrine system of horses, resulting in behavioral changes. This is the first work that studies the mechanism of pheromone treatment in horses and can be applied for further study about the effect of pheromone therapy on horses. Androstenone influences the changing behaviors of animals. Previous studies discovered that an androstenone receptor was expressed in horses and treatment with androstenone induced horses to be more compliant. As changes in the level of neuroendocrine factors result in animal behavioral changes, the objective of the study was to monitor the changes in the concentrations of 5-HT, beta-endorphin, and cortisol in response to androstenone. Eight thoroughbred horses (five mares and three geldings) were treated with androstenone diluted in jojoba oil (10 mu g/mL) and only oil for a control cross-overly. A handler applied the treatments to the horses ' nostril and rubbed for 5 s. Blood samples were collected before, 15, 30, and 60 min after each treatment. The concentrations of each neurotransmitter were analyzed by enzyme-linked immunosorbent assay. The concentrations of each neurotransmitter after the treatment were compared to its baseline concentration. The concentration of 5-HT of the androstenone-treated horses remained consistent throughout the experiment, while the concentration of the control group significantly decreased over time. The plasma concentration of beta-endorphin in the androstenone-treated group also remained constant, whereas the concentration increased in the control group. Cortisol levels did not change in either the treated or untreated groups. An androstenone treatment triggers changes in the secretion of 5-HT and beta-endorphin in horses. ⓘ Choi, Yeonju; Yoon, Minjung ⓘ Kyungpook Natl Univ, Res Ctr Horse Ind, Dept Anim Sci & Biotechnol, Sangju 37224, South Korea ⓘ ⓘ 57208551604; 22137296500 ⓘ yjchoi2031@gmail.com;mjyoonemail@gmail.com; ⓘ ANIMALS ⓘ ANIMALS-BASEL ⓘ 2076-2615 11 6 SCIE AGRICULTURE, DAIRY & ANIMAL SCIENCE;VETERINARY SCIENCES ⓘ 2021 3.231 10.7 0.85 2025-07-30 ⓘ 6 6 androstenone; horse; neurotransmitter; pheromone ⓘ STRESS-RESPONSE; SOCIAL SUPPORT; DISORDERS; BEHAVIOR; MODEL ⓘ Androstenone; Horse; Neurotransmitter; Pheromone ⓘ 5 hyxroxytryptamine; androstenone; androstenone specific receptor; beta endorphin; biological marker; hydrocortisone; jojoba oil; neurotransmitter; pheromone; serotonin; unclassified drug; adult; animal behavior; animal experiment; animal model; animal welfare; Article; behavior assessment; behavior change; blood analysis; blood level; central nervous system; centrifugation; comparative study; controlled study; crossover procedure; dairy cattle; enzyme linked immunosorbent assay; gelding; hazard ratio; health program; homeostasis; hypothalamus hypophysis adrenal system; immunoassay; interassay coefficient; intraassay coefficient; jugular vein; least square analysis; neurosecretory terminal; nonhuman; nose cavity; sensitivity analysis; Simmondsia chinensis; spectral sensitivity; Thoroughbred horse; vomeronasal organ ⓘ English 2021 2021-06 10.3390/ani11061694 ⓘ 바로가기 바로가기 바로가기 바로가기
○ ○ Article ⓘ Effects of Ti addition on the microstructure and mechanical properties of Al-Zn-Mg-Cu-Zr alloy ⓘ The effects of Ti addition (0.1 wt%) on the microstructure evolution and mechanical properties of an Al-7.6Zn-2.6Mg-2.0Cu-0.1Zr alloy were investigated during solidification, extrusion, solution treatment, and aging. The addition of Ti reduces the grain size and degree of phase agglomeration during solidification, thereby improving the strength and ductility of the as-cast alloy. The extrusion forms a bimodal structure consisting of fine dynamically recrystallized (DRXed) grains and coarse elongated unDRXed grains. Ti induces the refinement of the eta-phases that enhances dynamic recrystallization (DRX) by particle-stimulated nucleation, resulting in reduced strength of the as-extruded alloy. The dissolution of the eta-phase occurs in the initial stages of the solution treatment, followed by coarsening of the eta-phase. The solution treatment causes static recrystallization and grain growth, increasing the grain size. The addition of Ti decreases the size and increases the number density of the L1(2) precipitate by modifying the chemical composition of (Al,Zn)(3)Zr into (Al,Zn)(3)(Zr,Ti), and causes the formation of an Al18Mg3Ti2 phase during the solution treatment. The addition of Ti also enhances heterogeneous nucleation of eta-Mg(Zn,Cu,Al)(2) at the Al18Mg3Ti2 interface and grain boundary but has a negligible effect on the formation of nanoprecipitates (GPII zone, eta') in the matrix. The improved strength and ductility of the solution-treated and aged alloys are attributed to the higher number density of the fine L1(2)-(Al,Zn)(3)(Zr,Ti) precipitates and grain refinement, as well as the finer eta-phases acting as cracking sites. ⓘ Lee, Sang-Hwa; Jung, Jae-Gil; Baik, Sung-Il; Park, Sung Hyuk; Kim, Min-Seok; Lee, Young-Kook; Euh, Kwangjun ⓘ Korea Inst Mat Sci, Met Mat Div, Chang Won 51508, South Korea; Yonsei Univ, Dept Mat Sci & Engn, Seoul 03722, South Korea; Northwestern Univ, Dept Mat Sci & Engn, Evanston, IL 60208 USA; Kyungpook Natl Univ, Sch Mat Sci & Engn, Daegu 41566, South Korea; Korea Univ Sci & Technol UST, Adv Mat Engn, Daejeon 34113, South Korea ⓘ Euh, Kwangjun/ABA-8453-2021; Park, Sung-Hyuk/AAE-6726-2022; Lee, Yong Jae/GLR-4153-2022 ⓘ 57189383717; 56303204900; 57197807775; 54786002500; 57218082191; 36063344000; 6602732804 ⓘ jgjung@kims.re.kr; ⓘ MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING ⓘ MAT SCI ENG A-STRUCT ⓘ 0921-5093 1873-4936 801 SCIE MATERIALS SCIENCE, MULTIDISCIPLINARY;METALLURGY & METALLURGICAL ENGINEERING;NANOSCIENCE & NANOTECHNOLOGY ⓘ 2021 6.044 10.8 3.07 2025-07-30 ⓘ 51 53 Aluminum alloys; Precipitation; Mechanical properties; Electron microscopy; Atom probe tomography ⓘ ATOM-PROBE DATA; TENSILE PROPERTIES; STRENGTHENING MECHANISMS; GRAIN-REFINEMENT; HOT DEFORMATION; ALUMINUM-ALLOY; BEHAVIOR; PRECIPITATION; CAST; SC ⓘ Aluminum alloys; Atom probe tomography; Electron microscopy; Mechanical properties; Precipitation ⓘ Aluminum alloys; Coarsening; Ductility; Dynamic recrystallization; Extrusion; Grain boundaries; Grain growth; Grain refinement; Grain size and shape; Magnesium alloys; Nucleation; Solidification; Ternary alloys; Titanium; Titanium alloys; Zinc alloys; Zircaloy; Al-Zn-Mg-Cu-Zr alloys; Atom-probe tomography; Grainsize; Microstructure evolutions; Microstructures and mechanical properties; Number density; Properties of Al; Solution treatments; Strength and ductilities; Ti addition; Precipitation (chemical) ⓘ English 2021 2021-01-13 10.1016/j.msea.2020.140437 ⓘ 바로가기 바로가기 바로가기 바로가기
○ ○ Article ⓘ Efficient synthetic approach for nanoporous adsorbents capable of pre- and post-combustion CO2 capture and selective gas separation ⓘ The level of CO2 in the atmosphere has increased rapidly due to vast quantities of fossil fuel combustion emissions, and it is accelerating global warming. Hence, pre- and post-combustion CO2 capture and storage (CCS) has become a vital necessity. Cost-effective and efficient nanoporous adsorbents for pre- and post-combustion CO2 capture were developed in this study. The highly porous and oxygen-rich carbon adsorbents were prepared in a facile one-pot process via the direct chemical activation of a molecularly imprinted polymer (MIP) and a MIP composite with activated carbon. The porous carbon adsorbent prepared from the MIP composite had a large specific surface area and specific pore volume of 3010 m2 g-1 and 1.506 cm3 g-1, respectively. Its bimodal pore structure contained micropores and mesopores. This nanoporous carbon adsorbent was rich in electrondense oxygen presented in a variety of oxygen surface functional groups, which was also advantageous for CCS. These merits afforded selective CO2 adsorption and a high storage capacity under pre- and post-combustion conditions. The efficient carbon adsorbent can be stored 22.1 mmol g-1 and 3 mmol g-1 of CO2 at 25 bar and 1 bar, respectably, which was in the upper range of values reported for porous carbon. Selective CO2 capture by the carbon adsorbents was confirmed by evaluating their selectivity in CO2/CH4, CO2/N2, and CO2/H2 binary gas mixtures at 298 K based on the ideal adsorbed solution theory (IAST). The most effective adsorbent had CO2/H2 (40:60) and CO2/N2 (50:50) selectivity of 534 and 22.6, respectively. The isosteric heat of CO2 adsorption on the porous carbon adsorbents further corroborated the selective CO2 capture. ⓘ Park, Jaewoo; Cho, Se Yeon; Jung, Minji; Lee, Kiyoung; Nah, Yoon-Chae; Attia, Nour F.; Oh, Hyunchul ⓘ Gyeongnam Natl Univ Sci & Technol GNTECH, Dept Energy Engn, Jinju 52725, South Korea; Kyungpook Natl Univ, Sch Nano & Mat Sci & Engn, Sangju 37224, Gyeongbuk, South Korea; Korea Univ Technol & Educ KOREATECH, Sch Energy Mat & Chem Engn, 1600 Chungjeol Ro, Chungnam 31253, Cheonan, South Korea; Natl Inst Stand, Chem Div, Fire Protect Lab, Giza 12211, Egypt; Future Convergence Technol Res Inst, Jinju 52725, South Korea ⓘ ; Oh, Hyunchul/G-5697-2018; Nah, Yoon-Chae/C-2751-2008; Attia, Nour/Y-6090-2019; Lee, Kiyoung/J-8680-2013 ⓘ 59879025300; 57215933990; 57202773720; 57219211501; 55978731300; 55626177100; 55340650900 ⓘ drnour2017@gntech.ac.kr;oh@gntech.ac.kr; ⓘ JOURNAL OF CO2 UTILIZATION ⓘ J CO2 UTIL ⓘ 2212-9820 2212-9839 45 SCIE CHEMISTRY, MULTIDISCIPLINARY;ENGINEERING, CHEMICAL ⓘ 2021 8.321 10.8 3.02 2025-07-30 ⓘ 51 59 MIP; Nanoporous carbon materials; Oxygen doping; Gas selectivity ⓘ DOPED POROUS CARBONS; HIGH-SURFACE-AREA; LOW-TEMPERATURE; ACTIVATED CARBON; DIOXIDE CAPTURE; RAMAN-SPECTRA; ADSORPTION; PERFORMANCE; CH4; HYDROGEN ⓘ CO<sub>2</sub>/H<sub>2</sub>separation; Gas selectivity; MIP; Nanoporous carbon materials; Oxygen doping; Pre-and post-combustion CO<sub>2</sub>capture ⓘ Binary mixtures; Carbon dioxide; Chemical activation; Combustion; Cost effectiveness; Fossil fuels; Gas mixtures; Global warming; Oxygen; Pore structure; Bimodal Pore Structure; Binary gas mixture; Fossil fuel combustion emissions; Ideal adsorbed solution theories (IAST); Large specific surface areas; Molecularly Imprinted Polymer; Nanoporous adsorbents; Oxygen surface functional group; Carbon capture ⓘ English 2021 2021-03 10.1016/j.jcou.2020.101404 ⓘ 바로가기 바로가기 바로가기 바로가기
○ ○ Article ⓘ Microstructural evolution of rolled AZ31 alloy plate during in-plane compression and annealing: Effect of amount of compressive strain ⓘ In this study, a rolled AZ31 alloy plate is compressed to various plastic strains (3, 6, and 9%) along the rolling direction (RD) and then annealed at 250 degrees C to determine the variations in the microstructural characteristics during the compression and subsequent annealing steps. When 3% compression is applied to the as-rolled material, its average grain size decreases from 37.9 mu m to 18.8 mu m because of the formation of numerous lamellar {10 (1) over bar2} twin bands. However, as the compressive strain increases from 3% to 9%, the average grain size increases from 18.8 mu m to 31.6 mu m owing to the coalescence of the formed twin bands. An increase in the compressive strain leads to the gradual strengthening of the RD-oriented twin texture, in which the basal poles are distributed within a range of 0 degrees-43 degrees from the RD toward the transverse direction. The subsequent annealing treatment causes an increase in the average grain size and a decrease in the number fractions of twin-induced boundaries with misorientation angles in the ranges of 5 degrees-10 degrees, 50 degrees-60 degrees, and 80 degrees-90 degrees owing to the formation of twin-free grains. The grain coarsening during annealing is much less pronounced in the 9%-compressed material than in 3%-compressed material because the driving force for boundary migration is lower in the former owing to the more homogeneous distribution of internal strain energy. The annealing treatment does not cause a remarkable change in the texture of the compressed materials. The 9%-compressed and subsequently annealed material has a spread RD-oriented texture and consists of twin-free equiaxed grains smaller than those of the as-rolled material. These results demonstrate that the application of an appropriate combined process of in-plane compression and subsequent annealing enables effective modification of the texture of rolled Mg alloy plates without any change in their twin-free homogeneous grain structure. ⓘ Lee, Jong Un; Kim, Ye Jin; Park, Sung Hyuk ⓘ Kyungpook Natl Univ, Sch Mat Sci & Engn, Daegu 41566, South Korea ⓘ Park, Sung-Hyuk/AAE-6726-2022 ⓘ 57195056728; 59052467200; 54786002500 ⓘ sh.park@knu.ac.kr; ⓘ MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING ⓘ MAT SCI ENG A-STRUCT ⓘ 0921-5093 1873-4936 826 SCIE MATERIALS SCIENCE, MULTIDISCIPLINARY;METALLURGY & METALLURGICAL ENGINEERING;NANOSCIENCE & NANOTECHNOLOGY ⓘ 2021 6.044 10.8 0.44 2025-07-30 ⓘ 6 7 Rolled Mg alloy; {10(1)over-bar2} twinning; Annealing; Texture; Microstructure ⓘ ENHANCED STRETCH FORMABILITY; MAGNESIUM ALLOY; MG-3AL-1ZN ALLOY; MECHANICAL-PROPERTIES; DEFORMATION-BEHAVIOR; CYCLIC DEFORMATION; TEXTURE; TWINS; IMPROVEMENT; RECRYSTALLIZATION ⓘ Annealing; Microstructure; Rolled Mg alloy; Texture; {101‾2} twinning ⓘ Annealing; Coarsening; Grain size and shape; Magnesium alloys; Microstructural evolution; Plates (structural components); Rolling; Strain; Strain energy; Alloy plates; Annealing; Average grain size; AZ31 alloy; Compressive strain; Mg alloy; Rolled mg alloy; Rolling direction; Twin-free; {101‾2} twinning; Textures ⓘ English 2021 2021-10-05 10.1016/j.msea.2021.141974 ⓘ 바로가기 바로가기 바로가기 바로가기
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