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Occurrence of anionic redox with absence of full oxidation to Ru^(5+) in high-energy P2-type layered oxide cathode

Journal of Energy Chemistry 2023年第9期84卷 153-161页

作者： Jinho Ahn Hyunyoung Park Wonseok Ko Yongseok Lee Jungmin Kang Seokjin Lee Sangyeop Lee Eunji Sim Kyuwook Ihm Jihyun Hong Jung-Keun yoo Kyojin Ku Jongsoon Kim Department of Energy Science Sungkyunkwan UniversitySuwon 16419Republic of Korea SKKU Institute of Energy Science and Technology(SIEST) Sungkyunkwan UniversitySuwon 16419Republic of Korea Nano&Interface Research Team Pohang Accelerator LaboratoryPohang 37673Republic of Korea Department of Smart Fabrication Technology Sungkyunkwan UniversitySuwon 16419Republic of Korea Energy Materials Research Center Korea Institute of Science and Technology(KIST)14 Gil 5 Hwarang-roSeongbuk-guSeoul 02792Republic of Korea Carbon Composites Department Composites Research DivisionKorea Institute of Materials Science(KIMS)797 ChangwondaeroChangwon 51508Republic of Korea Department of Materials Science and Engineering Hanbat National UniversityDaejeon 34158Republic of Korea

The anionic redox has been widely studied in layered-oxide-cathodes in attempts to achieve highenergy-density for Na-ion batteries(NIBs).It is known that an oxidation state of Mn^(4+) or Ru^(5+) is essential for the anionic reaction of O^(2-)/O~-to occur during Na^(+) de/***,here,we report that the anionic redox can occur in Ru-based layered-oxide-cathodes before full oxidation of Ru^(4+)/Ru^(5+).Combining studies using first-principles calculation and experimental techniques reveals that further Na^(+) deintercalation from P2-Na_(0.33)[Mg_(0.33)Ru_(0.67)]O_(2) is based on anionic oxidation after 0.33 mol Na^(+) deintercalation from P2-Na_(0.67)[Mg_(0.33)Ru_(0.67)]O_(2) with cationic oxidation of Ru^(4+)/Ru^(4.5+).Especially,it is revealed that the only oxygen neighboring 2Mg/1 Ru can participate in the anionic redox during Na^(+) de/intercalation,which implies that the Na-O-Mg arrangement in the P2-Na_(0.33)[M9_(0.33)Ru_(0.67)]O_(2) structure can dramatically lower the thermodynamic stability of the anionic redox than that of cationic *** the O anionic and Ru cationic reaction,P2-Na_(0.67)[Mg_(0.33)Ru_(0.67)]O_(2) exhibits not only a large specific capacity of~172 mA h g^(-1) but also excellent power-capability via facile Na^(+) diffusion and reversible structural change during charge/*** findings suggest a novel strategy that can increase the activity of anionic redox by modulating the local environment around oxygen to develop high-energy-density cathode materials for NIBs.

关键词： Na-ion batteries P2-type cathode Anionic redox Local environment First-principles calculation

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Visualization and level-of-detail of metadata for interactive exploration of Sensor Web

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International Journal of Digital Earth 2014年第11期7卷 847-869页

作者： Byounghyun yoo V.Judson Harward Imaging Media Research Center Korea Institute of Science and TechnologySeoulKorea Faculty of Arts and Sciences Harvard UniversityCambridgeMAUSA

There are several issues with Web-based search interfaces on a Sensor Web data *** can be difficult to(1)find the proper keywords for the formulation of queries and(2)explore the information if the user does not have previous knowledge about the particular sensor systems providing the *** investigate how the visualization of sensor resources on a 3D Web-based Digital Earth globe organized by level-of-detail(LOD)can enhance search and exploration of information by easing the formulation of geospatial queries against the metadata of sensor *** case study provides an approach inspired by geographical mashups in which freely available functionality and data are flexibly *** use PostgreSQL,PostGIS,PHP,and X3D-Earth technologies to allow the Web3D standard and its geospatial component to be used for visual exploration and LOD control of a dynamic *** goal is to facilitate the dynamic exploration of the Sensor Web and to allow the user to seamlessly focus in on a particular sensor system from a set of registered sensor networks deployed across the *** present a prototype metadata exploration system featuring LOD for a multiscaled Sensor Web as a Digital Earth application.

关键词： Sensor Web datavisualization Sensor Web data discovery and search level-of-detail metadata visualization Web3D standard extensible 3D graphics X3D geospatial component

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Mismatching between nest volume and clutch volume reduces egg survival and fledgling success in black-tailed gulls

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Current Zoology 2016年第5期62卷 451-456页

作者： Who-Seung LEE Jeong-Chil yoo Korea Institute of Ornithology and Department of Biology Kyung Hee University Seoul 02447 Korea Center for Stock Assessment Research University of California Santa Cruz Santa Cruz CA 95080 USA

A longstanding suggestion posits that parents prefer to match nest volume and clutch size (clutch volume), but few studies have tested this in colonial seabirds that nest in the open. Here, we demonstrate the effects of nest-clutch volume matching on egg survival, hatching, and fledgling success in black-tailed gulls on Hongdo Island, Korea. We show that the volume mismatch, defined as the difference between nest volume and total egg volume (the sum of all eggs' volume in the clutch), was positively related to egg and chick mortality caused by predation, but was not significantly related to hatching success incurred by insulation during the incubation period. Although nest volume was negatively related to laying date, we found that the mismatch was positively related to laying date. Our results support the claim that well-matched nest-clutch volume may contribute to survival of eggs and chicks, and ultimately breeding success.

关键词： black-tailed gulls clutch size egg survival fledgling success nest volume

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Role of neoadjuvant therapy for nonmetastatic pancreatic cancer:Current evidence and future perspectives

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World Journal of Gastrointestinal Oncology 2023年第6期15卷 911-924页

作者： Gianluca Cassese Ho-Seong Han yoo-Seok yoon Jun Suh Lee Boram Lee Antonio Cubisino Fabrizio Panaro Roberto Ivan Troisi Department of Clinical Medicine and Surgery Division of Minimally Invasive HPB Surgery and Transplantation ServiceFederico II University HospitalNaples 80131Italy Department of Surgery Seoul National University College of MedicineSeongnam 13620Gyeonggi-doSouth Korea Department of HPB Surgery and Transplantation Beaujon HospitalClichy 92110France Department of Digestive Surgery and Liver Transplantation CHU MontpellierMontpellier 34100France

Pancreatic adenocarcinoma(PDAC)is one of the most common and lethal human cancers *** followed by adjuvant chemotherapy offers the best chance of a long-term survival for patients with PDAC,although only approximately 20%of the patients have resectable tumors when *** chemotherapy(NACT)is recommended for borderline resectable pancreatic *** studies have investigated the role of NACT in treating resectable tumors based on the recent advances in PDAC biology,as NACT provides the potential benefit of selecting patients with favorable tumor biology and controls potential micro-metastases in high-risk patients with resectable *** such challenging cases,new potential tools,such as ct-DNA and molecular targeted therapy,are emerging as novel therapeutic options that may improve old *** review aims to summarize the current evidence regarding the role of NACT in treating non-metastatic pancreatic cancer while focusing on future perspectives in light of recent evidence.

关键词： Pancreatic cancer Pancreatic duct adenocarcinoma Neoadjuvant chemotherapy Borderline resectable Locally advanced pancreatic cancer

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Primary duodenal dedifferentiated liposarcoma:A case report and literature review

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World Journal of Clinical Cases 2022年第6期10卷 2007-2014页

作者： Nah Ihm Kim Ji Shin Lee Chan Choi Jong Hee Nam yoo Duk Choi Hee Joon Kim Sung Sun Kim Department of Pathology Chonnam National University HospitalGwangju 61469South Korea Department of Pathology Chonnam National University Hwasun HospitalHwasun 58128South Korea Department of Surgery Chonnam National University HospitalGwangju 61469South Korea

BACKGROUND Dedifferentiated liposarcoma(DDLPS)is an extremely rare neoplasm that exhibits various *** tumor is characterized by immunoreactivity to MDM2 and CDK4 and can be confirmed by detecting MDM2 amplification via fluorescence in situ hybridization(FISH).Herein,we report an unusual case of DDLPS arising from the *** SUMMARY A 64-year-old man presented with repeated abdominal pain and weight *** studies revealed a mass of the duodenum involving the *** patient was treated with pylorus-preserving ***,the tumor showed a high-grade *** demonstrated that the tumor cells were positive for MDM2 and CDK4 ***2 amplification was detected via FISH,leading to the final diagnosis of *** surgery,the patient was treated in the intensive care unit due to peritonitis,and died 60 d after *** To the best of the authors’knowledge,this is the first case of primary duodenal DDLPS in Korea and the third case in the English-language *** must be taken not to misdiagnose DDLPS as another high-grade *** should be in the differential diagnosis list.

关键词： Liposarcoma Primary Small bowel Duodenum Immunohistochemistry Case report

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Comment on “Insights into the pathogenesis of cystoid macular edema: leukostasis and related cytokines”

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International Journal of Ophthalmology(English edition) 2020年第8期13卷 1343-1344页

作者： Nevio Cimolai yoo-ri Chung Kihwang Lee Department of Pathology and Laboratory Medicine the University of British ColumbiaVancouverBritish Columbia V6H3V4Canada Department of Ophthalmology Ajou University School of MedicineSuwon16499Korea

Dear Editor,The review of Chung et al[1]regarding the pathogenesis of cystoid macular edema(CME)raises valid postulates of shared pathogenesis which is based on inflammation and associated *** recognizing diverse etiological conditions,the definition of common pathways has the potential to improve interventionist *** further mechanism for CME that is less appreciated,however,is the cascade of reactions induced or modulated by eicosanoids.

关键词： pathogenesis edema inflammation

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Sulfonated fluorinated multi-block copolymer hybrid containing sulfonated(poly ether ether ketone) and graphene oxide: A ternary hybrid membrane architecture for electrolyte applications in proton exchange membrane fuel cells

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Journal of Energy Chemistry 2018年第4期27卷 1247-1260页

作者： Ae Rhan Kim Mohanraj Vinothkannan Dong Jin yoo Department of Bioenvironmental Chemistry and R&D Center for CANUTECH Business Incubation Center Chonbuk National University Graduate School Department of Energy Storage/Conversion Engineering Hydrogen and Fuel Cell Research Center Chonbuk National University Department of Life Science Chonbuk National University

A ternary hybrid membrane architecture consisting of sulfonated fluorinated multi-block copolymer （SFMC）, sulfonated （poly ether ether ketone）（SPEEK） and I or 5 wt% graphene oxide （GO） was fabricated through a facile solution casting approach. The simple, but effective monomer sulfonation was performed for SFMC to create compact and rigid hydrophobic backbone structures, while conventional random sulfonation was carried-out for SPEEK. Hydrophilic-hydrophobic-hydrophilic structure of SFMC enhances the compatibility with SPEEK and GO and allows for an unprecedented approach to alter me- chanical strength and proton conductivity of ternary hybrid membrane, as verified from universal test machine （UTM） curves and alternating current （AC） impedance plots. The impact of GO integration on the morphology and roughness of hybrid membrane was scrutinized using field emission scanning electron microscope （FE-SEM） and atomic force microscope （AFM）. Ternary hybrid showed uniform intercalation of GO nanosheets throughout the entire surface of membrane with an increased surface roughness of 8.91 nm. The constructed ternary hybrid membrane revealed excellent water absorption, ion exchange capacity and gas barrier properties, while retaining reasonable dimensional stability. The well-optimized ternary hybrid membrane containing 5 wt% GO revealed a maximum proton conductivity of 111.9 mS/cm, which is higher by a factor of two-fold with respect to that of bare SFMC membrane. The maximum PEMFC power density of 528.07mW/cm2 was yielded by ternary hybrid membrane at a load current density of 1321.1 mA/cm2 when operating the cell at 70 ℃ under 100% relative humidity （RH）. In comparison, a maximum power density of only 182.06 mW/cm2 was exhibited by the bare SFMC membrane at a load current density of 455.56 mA/cm2 under same operating conditions.

关键词： Sulfonated fluorinated multi-block copolymer Sulfonated(poly ether ether ketone) Graphene oxide Hydrogen bonding Proton conductivity

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术中麻醉方法对全膝置换术后镇痛效果和吗啡使用的影响:一项网状荟萃分析

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临床骨科杂志 2024年第1期27卷 136-136页

作者： yoo J D HUH M H LEE S H 胡孔足(摘译) 不详

作者使用网状荟萃分析方法,纳入40项研究。结果发现,切口周围浸润麻醉结合隐神经阻滞麻醉对全膝置换患者术后第1、2天镇痛效果最好,对术后第1、3天吗啡需要量最少。股神经阻滞麻醉术后第3天镇痛效果最好,布比卡因神经阻滞麻醉术后第2天... 详细信息

作者使用网状荟萃分析方法,纳入40项研究。结果发现,切口周围浸润麻醉结合隐神经阻滞麻醉对全膝置换患者术后第1、2天镇痛效果最好,对术后第1、3天吗啡需要量最少。股神经阻滞麻醉术后第3天镇痛效果最好,布比卡因神经阻滞麻醉术后第2天吗啡需要量最少。

关键词：神经阻滞麻醉浸润麻醉荟萃分析镇痛效果布比卡因术中麻醉全膝置换吗啡

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Air Traffic Volume and Air Traffic Control Human Errors

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Journal of Transportation Technologies 2011年第3期1卷 47-53页

作者： Woo-Choon moon Kwang-Eui yoo Youn-Chul Choi 不详

Navigable airspaces are becoming more crowded with increasing air traffic, and the number of accidents caused by human errors is increasing. The main objective of this paper is to evaluate the relationship between air traffic volume and human error in air traffic control (ATC). First, the paper identifies categories and elements of ATC human error through a review of existing literature, and a study through interviews and surveys of ATC safety experts. And then the paper presents the results of an experiment conducted on 52 air traffic controllers sampled from the Korean ATC organization to find out if there is any relationship between traffic volume and air traffic controller human errors. An analysis of the experiment clearly showed that several types of ATC human error are influenced by traffic volume. We hope that the paper will make its contribution to aviation safety by providing a realistic basis for securing proper manpower and facility in accordance with the level of air traffic volume.

关键词： ATC Human Error Air traffic volume Workload

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FDG PET/CT中肿瘤与肝脏的标准化摄取值比（TLR）对边缘阴性ⅠB和ⅡA期非小细胞肺癌病人的预后价值

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国际医学放射学杂志 2023年第6期 755-756页

作者： H.L.Park S.H.Boo S.Y.Park S.W.moon I.R.yoo 齐晓莹

摘要目的评价PET/CT的肿瘤与肝脏的标准化摄取值（SUV）的比值（TLR）对切缘阴性ⅠB期和ⅡA非小细胞肺癌（NSCLC）病人的预后价值，并分析需采用辅助治疗（AT）的高

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