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Low-temperature synthesis of Fe_(2)(MoO_(4))_(3) nanosheets: A cathode for sodium ion batteries with kinetics enhancement

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Nano Research 2021年第11期14卷 3977-3987页

作者： ha Tran Huu N.S.M.Viswanath Ngoc Hung Vu Jong-Won Lee Won Bin im Division of Materials Science and Engineering Hanyang University222Wangsimni-roSeongdong-guSeoul04763Republic of Korea School of Materials Science and Engineering Chonnam National University77 Yongbong-roBuk-guGwangju61186Republic of Korea Falcuty of Biotechnology Chemistry and Environmental EngineeringPhenikaa UniversityHanoi10000Vietnam A&A Green Phoenix Group Phenikaa Research and Technology Institute(PRATI)167 Hoang NganHanoi10000Vietnam Department of Energy Science and Engineering Daegu Gyeongbuk Institute of Science and Technology(DGIST)333 Techno Jungang-daeroHyeonpung-eupDalseonggunDaegu42988Republic of Korea

Sodium ion batteries (SIBs) are alternatives to lithium ion batteries (LIBs), and offer some significant benefits such as cost reduction and a lower environmental impact;however, to compete with LIBs, further research is required to improve the performance of SIBs. In this study, an orthorhombic Na super ionic conductor structural Fe_(2)(MoO_(4))_(3) nanosheet with amorphous-crystalline core-shell alignment was synthesized using a facile low-temperature water-vapor-assisted solid-state reaction and applied as a cathode material for SIBs. The obtained material has a well-defined three-dimensional stacking structure, and exhibits a high specific capacity of 87.8 mAh·g^(−1) at a current density of 1 C = 91 mA·g^(−1) after 1,000 cycles, which is due to the considerable contribution of extra surface-related reaction such as the pseudo-capacitive process. This material shows significantly improved cycling and rated behavior as well as enhanced performance under high- and low-temperature conditions, as compared to the same materials prepared by the conventional high-temperature solid-state reaction. This enhancement is explained by the unique morphology in combination with the improved kinetics of the electrochemical reaction due to its lower charge transfer resistance and higher sodium ion conductivity.

关键词： low-temperature synthesis cathode sodium ion batteries kinetics Na+super ionic conductor(NASICON)

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Clinical analysis of risk factors contributing to recurrence of pterygium after excision and graft surgery

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International Journal of Ophthalmology(English edition) 2015年第3期8卷 522-527页

作者： sang Won ha Joon Ho Park im Hee Shin Hong Kyun Kim Department of Ophthalmology Kyungpook National University School of Medicine Department of Medical Statistics Catholic University of Daegu School of medicine

Aim: To find the risk factors related to the reproliferation of the pterygial tissue after excision and graft ***: Charts of 130 eyes of 130 patients who had pterygial excision from March 2006 to April 2011 were reviewed. Preoperative pterygium morphology, surgical methods, and adjunctive treatments were statistically analyzed for their relationship with ***: During the follow-up period, recurrence was observed in 20 eyes(15.4%). None of the preoperative morphologic features were affected the rate of the recurrence. However, an age hat intraoperative mitomycin C(MMC)(P =0.072, OR 0.298, 95% CI 0.080-1.115)decreased the rate of recurrence. CONCLUSION: Younger age is a risk factor for reproliferation of pterygial tissue after excision and amniotic membrane transplantation(AMT) are less effective in preventing recurrence of pterygium after excision based on the comparison between conjunctival autograft and AMT. Intraoperative MMC application and conjunctival autograft reduce recurrence.

关键词： pterygium recurrence conjunctival autograft amniotic membrane graft mitomycin C

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Effects of dietary supplementation of bacteriophage cocktail on health status of weanling pigs in a non-sanitary environment

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Journal of Animal Science and Biotechnology 2023年第4期14卷 1661-1677页

作者： Yohan Choi Abdolreza Hosseindoust sang Hun ha Joeun Kim YeJin Min YongDae Jeong JunYoung Mun SooJin sa JinSoo Kim Swine Science Division National Institute of Animal ScienceRural Development AdministrationCheonan 31000Republic of Korea Department of Animal Industry Convergence Kangwon National UniversityChuncheon 24341Republic of Korea

Background The study evaluated the effects of bacteriophage cocktail(BP)and ZnO administered during weaning time for piglets exposed to a non-sanitary *** bacteriophages were designed to eliminate Escherichia coli(K88,K99 and F41),salmonella(typhimurium and enteritidis),and Clostridium perfreingens(types A and C).Forty 21-day-old crossbreed piglets were assigned to four treatments,including the PC(sanitary environment),NC(nonsanitary environment),BP(NC plus 108 pfu/kg BP),and ZO(NC plus 2,500 mg/kg ZnO).Piglets in the NC,BP and ZO were kept in a non-sanitary environment for 14 d,which was contaminated with the feces of infected *** Pigs in the BP and ZO treatments had a higher final body weight compared with the *** NC treatment showed the highest concentration of inflammatory cytokines including interleukin(IL)-1β,IL-6 and tumor necrosis factor-αin the *** administration of BP and ZO showed lower myeloperoxidase concentrations compared with the *** NC treatment showed a lower concentration of superoxide dismutase in serum compared with the *** the treatments in non-sanitary environment,the NC treatment showed a higher concentration of malondialdehyde compared with the *** PC treatment showed a lower concentration of butyric acid in the feces compared with the BP *** non-sanitary treatments,the villus height in the duodenum was greater in the BP and ZO compared with the *** lower abundance of Proteobacteria phylum was observed in the BP and PC treatments compared with the *** highest relative abundance of Eubacterium was recorded in the BP *** abundance of Megasphaera and Schwartzia was higher in the NC pigs compared with the BP *** abundance of Desulfovibrio was lower in the supplemented treatments(BP and ZO)compared with non-supplemented(NC and PC).The abundance of Cellulosilyticum genera was higher in the BP and ZO treatments rather than in the *** piglets in the NC treatment had the

关键词： Antioxidant Cytokines Diarrhea Fecal score Inflammation Microbiota Proteobacteria

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Anti-MMP-2 and MMP-9 activity of salsola komarovii Iljin extract and its solvent fractions

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Asian Pacific Journal of Tropical Biomedicine 2020年第10期10卷 460-469页

作者： Jung-ha Kil Fatih Karadeniz Ga Hyun Yu Hojun Kim Junse Kim Jung Hwan Oh Jung im Lee Chang-SukKong Youngwan Seo Marine Biotechnology Center for Pharmaceuticals and Foods Silla UniversityBaegyang-daero 700 beon-gil 140Sasang-guBusan 46958Korea Department of Food and Nutrition College of Medical and Life SciencesSilla UniversityBaegyang-daero 700 beon-gil 140Sasang-guBusan 46958Korea Division of Marine Bioscience Korea Maritime and Ocean UniversityBusan 49112Korea

Objective: To investigate matrix metalloproteinases(MMP)-2 and MMP-9 inhibitory effect of salsola komarovii Iljin, an edible halophyte with health beneficial ***: salsola komarovii crude extracts(SKI), and solvent(n-hexane, 85% aq. MeOH, n-BuOH, and H2O) fractionated extracts of SKI were prepared. Gelatin zymography was carried out to observe MMP enzymatic activity. The release of the MMP enzymes was measured by enzyme-linked immunosorbent assay. Expression of MMPs in m RNA and protein level were investigated by polymerase chain reaction analysis and immunoblotting, ***: SKI and SKI fractions inhibited active MMP-2 and MMP-9 amount in the treated cell culture medium. Also, SKI suppressed the release of MMP-2 and MMP-9 from stimulated HT1080 human fibrosarcoma cells. Furthermore, SKI suppressed the m RNA and protein expression of MMP-2 and MMP-9. SKI fractions showed parallel effects except for H2O fraction which did not yield any significant MMP inhibitory effect. Among fractions, 85% aq. Me OH was the most active fraction to inhibit both the enzymatic effect and expression of MMP-2 and ***: SKI may contain potential MMP release inhibitory compounds. salsola komarovii is a promising source of compounds against MMP and could be utilized in the development of antitumor agents.

关键词： release utilized effect

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Effects of human disturbance on nest placement of the woodpigeon (Columba palumbus): a case study from the Middle Atlas, Morocco

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Integrative Zoology 2014年第3期9卷 349-359页

作者： saâd haNANE Forest Research Center High Commissariat for WaterForests and Desertification ControlRabat-AgdalMorocco

The woodpigeon(Columba palumbus)is a common and widespread bird in Morocco(North Africa).I examined,over 2 years(2010 and 2011),the breeding density and nest placement of this game species in relation to nest site habitat and degree of human *** study area was in the Middle Atlas Tighboula mountain forest,Morocco,in a disturbed and an undisturbed *** data collected in the 2 study sites,I aimed to identify the factors influencing the placement of nests within holm oak trees(Quercus rotundifolia)and their densities.I found that habitat structures,influenced by grazing disturbance,have affected nesting density and the location of nests of this *** place their nests in a higher position(3.42±0.19 m)when disturbance intensity is high and lower(1.68±0.1 m)when disturbance intensity is low,and show higher nesting density in less disturbed zone(3.1±0.4 nests/ha)than in highly disturbed zones(1.4±0.2 nests/ha).Grazing disturbance could pose a threat to population persistence at a broader scale and could potentially reduce the abundance of this species by altering the composition and the structure of the forest nesting *** multi-scale studies are needed to assess the effects of different levels of grazing disturbance on woodpigeon nest density and placement,and to enhance our knowledge of the breeding behavior of this game species under variable environments.

关键词： breeding density Columba palumbus holm oak Middle Atlas Morocco nest location woodpigeon

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Dry eye rate and its relationship with disease stage in patients with primary hypertension:a cross-sectional study in Vietnam

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International Journal of Ophthalmology(English edition) 2024年第4期17卷 653-658页

作者： Tran Tat Thang Pham Hong Phuong Nguyen sa Huynh Nguyen Trung Kien NguyenDuy Toan Nguyen Thi Thu ha Le ha Khoa Nguyen Huu Dung Thai Doan Thang Le Viet Thang Nghe An Eye Hospital Nghe An 43000Vietnam Nghe An Friendship General Hospital Nghe An 43000Vietnam Military Hospital 103 Ha Noi 100000Vietnam Vietnam Military Medical University Ha Noi 100000Vietnam hanoi Medical University Ha Noi 100000Vietnam Bạch Mai Hospital Ha Noi 100000Vietnam TTH Vinh General Hospital Nghe An 100000Vietnam

Aim:To determine the dry eye(DE)rate and its relationship with disease stage in patients with primary ***:A cross-sectional study included 432 patients with primary hypertension(with an equal number of patients in each group:144 in stage Ⅰ,Ⅱ,and Ⅲ hypertension)and 144 healthy subjects as a control *** Ocular Surface Disease Index(OSDI)and Schirmer Ⅰ test without anesthetics were conducted on all 576 *** with OSDI scoreshan in the control group(41.7%versus 18.8%;Phan those without DE,Pimary hypertension patients,Pimary hypertension.

关键词： primary hypertension dry eye stage of hypertension plasma creatinine

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Optimally arranged TiO_(2)@MoS_(2) heterostructures with effectively induced built-in electric field for high-performance lithium-sulfur batteries

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Journal of Energy Chemistry 2023年第8期83卷 496-508,I0012页

作者： Jeongyoub Lee Changhoon Choi Jung Been Park Seungho Yu Jinho ha Hyungsoo Lee Gyumin Jang Young Sun Park Juwon Yun hayoung im Subin Moon Soobin Lee Jung-Il Choi Dong-Wan Kim Jooho Moon Department of Materials Science and Engineering Yonsei UniversitySeoul 03722Republic of Korea School of Civil Environmental and Architectural EngineeringKorea UniversitySeoul 02841Republic of Korea Energy Storage Research Center Korea Institute of Science and Technology(KIST)Seoul 02792Republic of Korea School of Mathematics and Computing(Computational Science and Engineering) Yonsei UniversitySeoul 03722Republic of Korea

To overcome the serious technological issues affecting lithium-sulfur(Li-S) batteries,such as sluggish sulfur redox kinetics and the detrimental shuttle effect,heterostructure engineering has been investigated as a strategy to effectively capture soluble lithium polysulfide intermediates and promote their conversion reaction by integrating highly polar metal oxides with catalytically active metals ***,to fully exploit the outstanding properties of heterostructure-based composites,their detailed structure and interfacial contacts should be designed ***,optimally arranged TiO_(2)and MoS_(2)-based heterostructures(TiO_(2)@MoS_(2)) are fabricated on carbon cloth as a multifunctional interlayer to efficiently trap polysulfide intermediates and accelerate their redox *** to the synergistic effects between TiO_(2)and MoS_(2)and the uniform heterointerface distribution that induces the ideally oriented built-in electric field,Li-S batteries with TiO_(2)@MoS_(2)interlayers exhibit high rate capability(601 mA h g^(-1)at 5 C),good cycling stability(capacity-fade rate of 0.067% per cycle over 500 cycles at2 C),and satisfactory areal capacity(5.2 mA h cm^(-2)) under an increased sulfur loading of 5.2 mg cm^(-2).Moreover,by comparing with a MoS_(2)@TiO_(2)interlayer composed of reversely arranged heterostructures,the effect of the built-in electric field’s direction on the electrocatalytic reactions of polysulfide intermediates is thoroughly investigated for the first *** superior electrocatalytic activities of the rationally arranged TiO_(2)@MoS_(2)interlayer demonstrate the importance of optimizing the built-in electric field of heterostructures for producing high-performance Li-S batteries.

关键词： Lithium-sulfur batteries Shuttle effect TiO_(2)-MoS_(2)heterostructure engineering Built-in electric field Multifunctional interlayers

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Heterostructures in two-dimensional colloidal metal chalcogenides:Synthetic fundamentals and applications

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Nano Research 2019年第8期12卷 1750-1769页

作者： Yuho Min Eunmi im Geon-Tae Hwang Jong-Woo Kim Cheol-Woo Ahn Jong-Jin Choi Byung-Dong hahn Joon-Hwan Choi Woon-ha Yoon Dong-Soo Park Dong Choon Hyun Geon Dae Moon Functional Ceramics Department Powder & Ceramics DivisionKorea Institute of Materials Science (KIMS)ChangwonGyeongnam51508Republic of Korea Department of Polymer Science and Engineering Kyungpook National UniversityDaegu41566Republic of Korea Dongrtam Regional Division Korea Institute of Industrial TechnologyBusan46938Republic of Korea

As a new class of two-dimensional materials, two-dimensional (2D) heterostructures constructed from metal chalcogenides (MCs) have been gaining tremendous attention due to their unprecedented physical and chemical phenomena, mainly originated from their distinct structural features such as composition, architecture type, spatial arrangement of each component, crystal structure, exposed facet and interface, dimensionality in their heterostructures. Towards the realization of practical applications, synthetic approaches need a rational design with a variety of architecture types including laterally-combined, vertically-aligned, and conformally-coated 2D MC heterostructures. Among various synthetic routes, solution-based synthesis is thought of as an alternative to fabrication through high-cost setups since it can control those structural features in a cheap fashion. This review presents recent progress on solution-based synthesis to produce various 2D MC heterostructures with a focus on the synthetic fundamentals in terms of thermodynamic and kinetic aspects related to the growth mechanism. Four different synthetic approaches are reviewed: seeded growth, cation exchange reaction, colloidal atomic layer deposition, direct synthesis including one-step process and modified electrochemical method. We also provide some representative applications of 2D MC heterostructures and their hybrid composites in various fields including optoelectronics, thermoelectrics, catalysis, and battery. Finally, we offer an insight into challenges and future directions in a synthetic improvement of 2D MC heterostructures.

关键词： metal chalcogenide heterostructure anisotropic nanomaterials two-dimensional (2D) nanomaterials solution-based synthesis

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Ameliorating liver fibrosis in an animal model using the secretome released from miR-122-transfected adipose-derived stem cells

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World Journal of Stem Cells 2019年第11期11卷 990-1004页

作者： Kee-Hwan Kim Jae im Lee Ok-Hee Kim ha-Eun Hong Bong Jun Kwak Ho Joong Choi Joseph Ahn Tae Yun Lee sang Chul Lee say-June Kim Department of Surgery Uijeongbu St.Mary’s HospitalCollege of Medicinethe Catholic University of KoreaSeoul 11765South Korea Catholic Central Laboratory of Surgery Institute of Biomedical IndustryCollege of Medicinethe Catholic University of KoreaSeoul 06591South Korea Department of Surgery Seoul St.Mary’s HospitalCollege of Medicinethe Catholic University of KoreaSeoul 06591South Korea Department of Surgery Daejeon St.Mary’s HospitalCollege of MedicineThe Catholic University of KoreaSeoul 34943South Korea

BACKGROUND Recently,the exclusive use of mesenchymal stem cell(MSC)-secreted molecules,called secretome,rather than cells,has been evaluated for overcoming the limitations of cell-based therapy,while maintaining its ***,the use of na?ve secretome may not fully satisfy the specificity of each ***,it appears to be more advantageous to use the functionally reinforced secretome through a series of processes involving physico-chemical adjustments or genetic manipulation rather than to the use na?ve *** To determine the therapeutic potential of the secretome released from miR-122-transfected adipose-derived stromal cells(ASCs).METHODS We collected secretory materials released from ASCs that had been transfected with antifibrotic miR-122(MCM)and compared their antifibrotic effects with those of the na?ve secretome(CM).MCM and CM were intravenously administered to the mouse model of thioacetamide-induced liver fibrosis,and their therapeutic potentials were *** MCM infusion provided higher therapeutic potential in terms of:(A)Reducing collagen content in the liver;(B)Inhibiting proinflammatory cytokines;and(C)Reducing abnormally elevated liver enzymes than the infusion of the na?ve *** proteomic analysis of MCM also indicated that the contents of antifibrotic proteins were significantly elevated compared to those in the na?ve *** We could,thus,conclude that the secretome released from miR-122-transfected ASCs has higher antifibrotic and anti-inflammatory properties than the na?ve *** miR-122 transfection into ASCs provides a specific way of potentiating the antifibrotic properties of ASC secretome,it could be considered as an enhanced method for reinforcing secretome effectiveness.

关键词： Adipose-derived stem cells Liver fibrosis MicroRNAs miR-122 Mesenchymal stem cells Secretome

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Clinicopathologic factors influencing the accuracy of EUS for superficial esophageal carcinoma

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World Journal of Gastroenterology 2014年第20期20卷 6322-6328页

作者： Jung im Jung Gwang ha Kim Hoseok I Do Youn Park Tae Kyun Kim Young Hwa Cho Yong Wan Sung Mun Ki Choi Bong Eun Lee Geun Am Song Department of Internal Medicine Pusan National University School of Medicine and Biomedical Research Institute Pusan National University Hospital Busan 602-739 South Korea Department of Chest Surgery Pusan National University School of Medicine Busan 602-739 South Korea Department of Pathology Pusan National University School of Medicine Busan 602-739 South Korea

Aim: To identify clinicopathologic factors influencing the accuracy of a high-frequency catheter probe endoscopic ultrasonography (EUS) for superficial esophageal carcinomas (SECs).

关键词： Esophageal cancer Endoscopic ultrasonography Accuracy

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