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Journal of Energy Chemistry 2024年第6期93卷 352-360,I0009页

作者： Donghyun yoon Sunki chung Minjun Choi Eunhyeok Yang Jaeyoung Lee School of Earth Sciences and Environmental Engineering Gwangju Institute of Science and Technology(GIST)Gwangju 61005Republic of Korea International Future Research Center of Chemical Energy Storage and Conversion Processes GISTGwangju 61005Republic of Korea Ertl Center for Electrochemistry and Catalysis GISTGwangju 61005Republic of Korea TKG Huchems Co.Ltd 963Sangam-roYeosu-siJeollanam-do 59614Republic of Korea

Ammonia allows storage and transport of hydrogen over long distances and is an attractive potential hydrogen *** decomposition has recently been used for the conversion of ammonia to hydrogen and is regarded as a future technology for production of CO_(2)-free pure ***,a heterostructural Pt-Ir dual-layer electrode is developed and shown to achieve successful long-term operation in an ammonia electrolyzer with an anion exchange membrane(AEM).This electrolyzer consisted of eight membra ne electrode assemblies(MEAs)with a total geometric area of 200 cm~2 on the anode side,which resulted in a hydrogen production rate of 25 L h~(-1).We observed the degradation in MEA performance attributed to changes in the anode catalyst layer during hydrogen production via ammonia ***,we demonstrated the relationship between the ammonia oxidation reaction(AOR)and the oxygen evolution reaction(OER).

关键词： Ammonia oxidation Dual-layer catalyst Green hydrogen Electrolytic process Oxygen evolution reaction

Metabolic relationships between marine red algae and algae‑associated bacteria

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Marine Life Science & Technology 2024年第2期6卷 298-314页

作者： Kyung Hyun Kim Jeong Min Kim Ju Hye Baek sang Eun Jeong Hocheol Kim Hwan Su yoon Che Ok Jeon Department of Biological Sciences and Biotechnology Hannam UniversityDaejon 34054Republic of Korea Department of Life Science Chung-Ang UniversitySeoul 06974Republic of Korea Department of Biological Sciences Sungkyunkwan UniversitySuwon 16419Republic of Korea

Mutualistic interactions between marine phototrophs and associated bacteria are an important strategy for their success-ful survival in the ocean,but little is known about their metabolic ***,bacterial communities in the algal sphere(AS)and bulk solution(BS)of nine marine red algal cultures were analyzed,and Roseibium and Phycisphaera were identified significantly more abundantly in AS than in *** metabolic features of Roseibium RMAR6-6(isolated and genome-sequenced),Phycisphaera MAG 12(obtained by metagenomic sequencing),and a marine red alga,Porphyridium purpureum CCMP1328(from GenBank),were analyzed ***6-6 has the genetic capability to fix nitrogen and produce B vitamins(B1,B2,B5,B6,B9,and B12),bacterioferritin,dimethylsulfoniopropionate(DMSP),and phenylacetate that may enhance algal growth,whereas MAG 12 may have a limited metabolic capability,not producing vitamins B9 and B12,DMSP,phenylacetate,and siderophores,but with the ability to produce bacitracin,possibly modulating algal *** CCMP1328 lacks the genetic capability to fix nitrogen and produce vitamin B12,DMSP,phenylacetate,and *** was shown that the nitrogen-fixing ability of RMAR6-6 promoted the growth of ***-pureum,and DMSP reduced the oxidative stress of *** metabolic interactions between strain RMAR6-6 and *** CCMP1328 were also investigated by the transcriptomic analyses of their monoculture and *** together,potential metabolic relationships between Roseibium and *** were *** study provides a bet-ter understanding of the metabolic relationships between marine algae and algae-associated bacteria for successful growth.

关键词： Metabolic relationship Marine red algae Symbiotic bacteria Roseibium Phycisphaera Porphyridium

Development of enterohepatic fistula after embolization in ileal gastrointestinal stromal tumor: A case report

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World Journal of Gastroenterology 2013年第43期19卷 7816-7819页

作者： Yun Ho Lee Ja Seol Koo Chang Ho Jung sang yoon chung Jae Joong Lee Seung Young Kim Jong Jin Hyun Sung Woo Jung Rok Seon Choung sang Woo Lee Jai Hyun Choi Division of Gastroenterology Department of Internal MedicineKorea University Ansan Hospital516 Gojan-dongDanwon-guAnsan-siGyeonggi-do 425-707South Korea

Gastrointestinal stromal tumor(GIST)is a rare mesenchymal tumor of the gastrointestinal tract that has been associated with the formation of fistulas to adjacent organs in few case ***,GIST with enterohepatic fistula has not been *** we report the case of an enterohepatic fistula that occurred after embolization of a liver mass originating in the distal *** 87-year-old woman was hospitalized for *** initial conventional endoscopy,a bleeding focus in the gastrointestinal tract was not *** of massive hematochezia,enteroscopy was performed through the anus.A protruding,ulcerative mass was found in the distal ileum that was suspected to be the source of the bleeding;a biopsy sample was *** was not successful in controlling the bleeding;therefore,embolization was *** embolization,the patient developed a high fever and severe abdominal tenderness with rebound ***-up abdominopelvic computed tomography revealed an enterohepatic fistula between the liver and distal *** fistula was treated surgically by segmental resection of the distal ileum and unlooping of the liver mass.

关键词： Gastrointestinal stromal tumor Enterohepatic fistula Therapeutic embolization Bleeding Ileal gastrointestinal stromal tumor

Electrical characteristics and detailed interfacial structures of Ag/Ni metallization on polycrystalline thermoelectric SnSe

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Journal of Materials Science & Technology 2019年第5期35卷 711-718页

作者： Yeongseon Kim Younghwan Jin Giwan yoon In chung Hana yoon chung-Yul Yoo sang Hyun Park Separation and Conversion Materials Laboratory Korea Institute of Energy Research 152 Gajeong-ro Yuseong-gu Daejeon 34129 Republic of Korea School of Electrical Engineering Korea Advanced Institute of Science and Technology 291 Daehak-ro Yuseong-gu Daejeon 34142 Republic of Korea Department of Physics Chungnam National University 99 Daehak-ro Yuseong-gu Daejeon 34134 Republic of Korea School of Chemical and Biological Engineering Seoul National University 1 Gwanak-ro Gwanak-gu Seoul 08826 Republic of Korea

SnSe is a promising thermoelectric material with a high figure of merit in single crystal form, which has stimulated continuous research on polycrystalline SnSe. In this study, we investigated a metallization techniques for polycrystalline SnSe to achieve highly efficient and practical SnSe thermoelectric modules. The Ag/Ni metallization layers were formed on pristine polycrystalline SnSe using various deposition technique: sputter coating Ni, powder Niand foil Ni by spark plasma sintering. Structural analysis demonstrated that the microstructure and con tact resistance could be different according to the metallization process, despite using the same metals. The Ag/Ni metallization layer using foil Ni acted as an effective diffusion barrier and minimized electrical contact resistance (2.3×10^-4Ωcm^2). A power loss in the thermoelectric module of only 5% was demonstrated using finite element simulation.

关键词： Thermoelectric Metallization Electric contact material Interface microstructure SnSe

Temporary severe oculomotor nerve palsy after reconstruction of orbital medial wall fracture: a case report of nonfamiliar complication

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International Journal of Ophthalmology(English edition) 2022年第6期15卷 1032-1034页

作者： Yeon Woong chung Tae yoon La Department of Ophthalmology St.Vincent's HospitalCollege of Medicinethe Catholic University of KoreaSuwon 16247Republic of Korea

Dear Editor, Commonly known complications following reconstruction of an orbital fracture include diplopia, hemorrhage, and displacement or infection of the orbital implant, and some studies have reported ptosis cause... 详细信息

关键词： fracture orbital dip

Optic perineuritis as an initial presentation of ocular toxoplasmosis:a case report

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International Journal of Ophthalmology(English edition) 2022年第12期15卷 2043-2046页

作者： Seung Ah chung chungwoon Kim Jong yoon Lim Yoo-Ri chung Department of Ophthalmology Ajou University School of MedicineSuwon 16499Republic of Korea The Bright Eye Center Gwangmyeong 14235Republic of Korea

Dear Editor,Ocular toxoplasmosis,caused by Toxoplasma gondii infection,is one of the most common causes of posterior uveitis worldwide[1].It typically manifests as white focal retinitis with overlying vitreous inflammation that results in a chorioretinal scar and associated scotoma[2].However,the diagnosis of ocular toxoplasmosis can be challenging when it presents as an isolated papillitis without other typical signs of retinochoroiditis or vitritis[2].Although optic nerve involvement in ocular toxoplasmosis was present in 5.3%of cases,isolated papillitis was extremely rare(3 eyes out of 926 patients)and was only considered a presumed diagnosis in such cases given the presence of old toxoplasmic retinochoroiditis lesions[3].Few reports have described optic nerve involvement preceding toxoplasmic retinochoroiditis,while perineuritis,an uncommon form of orbital inflammatory disease involving the optic nerve sheath,has not been reported at all[4-5].Herein,we describe a case of ocular toxoplasmosis that initially presented with optic perineuritis followed by typical retinochoroidal *** our knowledge,this is the first case report of ocular toxoplasmosis with perineuritis in an immunocompetent individual.

关键词： ocular diagnosis neuritis

Investigation of the sodium storage mechanism of iron fluoride hydrate cathodes using X-ray absorption spectroscopy and mossbauer spectroscopy

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Journal of Energy Chemistry 2023年第2期77卷 535-542,I0014页

作者： Ghulam Ali Muhammad Akbar Faiza Jan Iftikhar Qamar Wali Beata Kalska Szostko Dariusz Satuła Kyung yoon chung Energy Storage Research Center Korea Institute of Science and TechnologyHwarang-ro 14 gil 5Seongbuk-guSeoul 02792South Korea USPCAS-E National University of Sciences and Technology(NUST)H-12Islamabad 44000Pakistan Division of Energy&Environment Technology KIST SchoolKorea University of Science and Technology(UST)Hwarang-ro 14-gil-5Seongbuk-guSeoul 02792South Korea NUTECH School of Applied Sciences and Humanities National University of TechnologyIslamabad 44000Pakistan University of Białystok Faculty of ChemistryCiołkowskiego 1K15-424 BiałystokPoland University of Białystok Faculty of PhysicsCiołkowskiego 1L15-424 BiałystokPoland

Elucidation of a reaction mechanism is the most critical aspect for designing electrodes for highperformance secondary ***,we investigate the sodium insertion/extraction into an iron fluoride hydrate(FeF_(3)·0.5H_(2)O)electrode for sodium-ion batteries(SIBs).The electrode material is prepared by employing an ionic liquid 1-butyl-3-methylimidazolium-tetrafluoroborate,which serves as a reaction medium and precursor for F^(-)*** crystal structure of FeF_(3)·0.5H_(2)O is observed as pyrochlore type with large open 3-D tunnels and a unit cell volume of 1129A^(3).The morphology of FeF_(3)·0.5H_(2)O is spherical shape with a mesoporous *** microstructure analysis reveals primary particle size of around 10 *** FeF_(3)·0.5H_(2)O cathode exhibits stable discharge capacities of 158,210,and 284 mA h g^(-1) in three different potential ranges of 1.5-4.5,1.2-4.5,and 1.0-4.5 V,respectively at 0.05 C *** specific capacities remained stable in over 50 cycles in all three potential ranges,while the rate capability was best in the potential range of 1.5-4.5 *** electrochemical sodium storage mechanism is studied using X-ray absorption spectroscopy,indicating higher conversion at a more discharged ***-situ M?ssbauer spectroscopy strengthens the results for reversible reduction/oxidation of *** results will be favorable to establish high-performance cathode materials with selective voltage window for SIBs.

关键词： Iron fluoride Sodium-ion batteries Pyrochlore X-ray absorption spectroscopy Mössbauer spectroscopy

A case of unsuspected trans-orbital-cranial penetrating injury by a wooden chopstick in a one-year-old infant

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International Journal of Ophthalmology(English edition) 2022年第3期15卷 523-526页

作者： Yeon Woong chung Soon Young Lee Tae yoon La Department of Ophthalmology St.Vincent’s HospitalCollege of MedicineThe Catholic University of KoreaSeoul 16247Korea

Dear Editor,Transorbital penetrating injury is one emergency faced by ophthalmologists during primary care that requires special attention because it can lead to serious ophthalmic and neurological *** all head injuries, intracranial penetrating injuries occur at a low rate of 0.4%[1], and transorbital-cranial penetrating injuries are even more rare, but do occur more frequently in young children than in adults[2-3].

关键词： injuries infant orbital

Clinical Efficacy and Safety of Miniscalpel-Needle Treatment for Tension-Type Headache:A Systematic Review and Meta-Analysis

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Chinese Journal of Integrative Medicine 2020年第9期26卷 713-720页

作者： Chan-Young Kwon sang-Hoon yoon Sun-Yong chung Jong Woo Kim Department of Clinical Korean Medicine Graduate SchoolKyung Hee U niversitySeoul(02447)Republic of Korea chung-Yeon Central Institute Gwang-juRepublic of Korea Department of Oriental Neuropsychiatry Kyung Hee University Hospital at GangdongSeoul(02447)Republic of Korea

Objective:To investigate the clinical efficacy and safety of miniscalpel-needle(MSN)treatment for tension-type headache(TTH).Method:Seven medical databases were searched to identify randomized controlled trials(RCTs)evaluating the effect and safety of MSN *** articles published up to November 15,2018 were retrieved.A meta-analysis was conducted for the included studies,and the risk of bias was *** outcomes were visual analogue scale(VAS)or numeric rating scale(NRS)*** outcomes were clinical effective rates including total effective rate(TER),markedly effective rate(MER),and totally cured rate(TCR)determined by improvement in clinical symptoms or VAS scores,the frequency of adverse events(AEs)that occurred during the study,and participant quality of life(QOL).Results:Seven RCTs involving 724 participants were *** treatment showed significantly higher MER and TCR[relative risk(RR)1.27,95%confidence interval(Cl)1.01 to 1.61;RR 1.31,95%Cl 1.09 to 1.57,respectively],but not TER(RR 1.03,95%Cl 0.96 to 1.10)compared to *** treatment plus conventional treatment showed significant lower VAS and higher TER,MER,and TCR(mean difference-3.54,95%Cl-3.80 to-3.28;RR 1.14,95%Cl 1.06 to 1.23;RR 2.31,95%Cl 1.50 to 3.58;RR 3.01,95%Cl 2.25 to 4.02,respectively)compared to conventional ***:According to current evidence,MSN treatment as a monotherapy or as an adjunctive treatment to other existing treatments might have benefits on treating ***,since the number and the sample size of studies included were both small and the methodological quality was poor,the findings of this review should be interpreted with great caution,and our confidence in the results is low.A high quality RCT using objective outcomes should be performed on this topic.

关键词： acupuncture acupotomy tension-type headache systematic review meta-analysis

Diverse Functions of VDUP1 in Cell Proliferation,Differentiation,and Diseases

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Cellular & Molecular Immunology 2007年第5期4卷 345-351页

作者： sang Yong Kim Hyun-Woo Suh Jin Woong chung Suk-Ran yoon Inpyo Choi Stem Cell Research Center Korea Research Institute of Bioscience and BiotechnologyYusongTaejon 305-333Republic of Korea

Vitamin D3 up-regulated protein 1 （VDUP1） is a multifunctional protein involved in maintaining cellular homeostasis. VDUP1 is induced by a variety of stresses. Inversely, VDUP1 is often reduced in various tumor tissues and cell lines. Over-expression of VDUP1 inhibits cell proliferation through cell cycle arrest. VDUP1 interacts with thioredoxin （Trx） and negatively regulates the expression and antioxidant function of Trx which is involved in redox regulation. VDUP1/ mice are more susceptible to carcinogenesis than wild-type mice and are defective in establishing immune system induding the development and function of natural killer cells. Furthermore, VDUP1^-/- mice show impaired Kreb cycle-mediated fatty acid utilization. In this review, we have discussed the multifunctional roles of VDUP1 in diverse cellular responses, in particular its relation to proliferation, apoptosis, differentiation, and diseases such as cancer and stress-related diseases.

关键词： VDUP1 thioredoxin proliferation immune cell