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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

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Advances in Wireless,Batteryless,Implantable Electronics for Real‑Time,Continuous Physiological Monitoring

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Nano-Micro Letters 2024年第3期16卷 254-302页

作者： hyeonseok kim Bruno Rigo Gabriella Wong yoon Jae Lee Woon‑hong Yeo IEN Center for Wearable Intelligent Systems and healthcare Georgia Institute of TechnologyAtlantaGA 30332USA George W.Woodruff School of Mechanical Engineering Georgia Institute of TechnologyAtlantaGA 30332USA School of Electrical and Computer Engineering Georgia Institute of TechnologyAtlantaGA 30332USA Wallace h.Coulter Department of Biomedical Engineering Georgia Tech and Emory University School of MedicineAtlantaGA 30332USA Parker h.Petit Institute for Bioengineering and Biosciences Institute for MaterialsInstitute for Robotics and Intelligent MachinesGeorgia Institute of TechnologyAtlantaGA 30332USA

This review summarizes recent progress in developing wireless,batteryless,fully implantable biomedical devices for real-time continuous physiological signal monitoring,focusing on advancing human health *** considerations,such as biological constraints,energy sourcing,and wireless communication,are discussed in achieving the desired performance of the devices and enhanced interface with human *** addition,we review the recent achievements in materials used for developing implantable systems,emphasizing their importance in achieving multi-functionalities,biocompatibility,and *** wireless,batteryless devices offer minimally invasive device insertion to the body,enabling portable health monitoring and advanced disease ***,we summarize the most recent practical applications of advanced implantable devices for human health care,highlighting their potential for immediate commercialization and clinical uses.

关键词： Implantable electronics Biomedical systems Batteryless devices Wireless electronics Physiological signal monitoring

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CT Thresholds for Spinal Bone Mineral Attenuation to Prioritize Eligible Older Women for Osteoporosis Screening

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Open Journal of Radiology 2024年第2期14卷 92-101页

作者： Seo Yeon k. Orite Bryn higuchi hyo-Chun yoon Lana h. Gimber St. Elizabeths Medical Center Brighton MA USA University of California Irvine CA USA kaiser Permanente Division of Research Oakland CA USA Department of Diagnostic Imaging Hawaii Permanente Medical Group Honolulu HI USA

Introduction: Computed tomography (CT) measurements of bone mineral attenuation may be a useful means to identify older women who should be prioritized for bone mineral density screening. Methods: We compared bone mineral attenuation as measured in the L1 vertebra of CT studies to the results of dual-energy x-ray absorptiometry (DEXA) studies to determine what CT attenuation thresholds might yield a reasonable combination of sensitivity and specificity for the detection of osteoporosis. The study was limited to women between the ages of 65 and 75 years who had a DEXA study and a CT that included the L1 or adjacent vertebra performed within 3 years of the DEXA study. Results: There were 1226 women in this study, of whom 452 (38%) had osteoporosis based on a T-score ≤ −2.5 by DEXA. There were 830 CT studies performed with contrast and 396 studies which were performed without contrast. There was a statistically significant difference in the mean hU of those studies performed without contrast compared to those with contrast (unenhanced mean 103 hU versus 125 hU, p hresholds provided the most appropriate combination of sensitivity and specificity for the detection of osteoporosis when comparing CT studies performed without or with IV contrast and when all the CT data were used in aggregate. Conclusion: Different thresholds appear necessary when using the mean CT vertebral attenuation to identify older women for preferential referral for DEXA studies.

关键词： Osteoporosis Bone Mineral Attenuation CT Threshold

Synaptic a-Si:h/a-Ga_(2)O_(3) phototransistor inspired by the phototaxis behavior of organisms with all-optical and all-electrical stimulation modes

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Nano Research 2024年第8期17卷 7631-7642页

作者： Youngbin yoon Youngki kim Soowon Choi Jungdae kwon Myunghun Shin School of Electronics and Information Engineering Korea Aerospace UniversityGoyang10540Republic of Korea Nano Materials Division Korea Institute of Materials ScienceChangwon 51508Republic of Korea Department of Materials Science and Engineering Pusan National UniversityBusan 46241Republic of Korea

To improve neuromorphic computing performance,neuromorphic system components should mimic the behaviors of organic *** this study,a synaptic a-Si:h/a-Ga_(2)O_(3)phototransistor featuring all-optical and-electrical emulation is fabricated in a manner advantageous for complementary metal-oxide-semiconductor process *** phototransistor exhibits excitatory and inhibitory synaptic behaviors under stimulation by both optical and electrical *** mimics several essential synaptic functions,including excitatory postsynaptic current,inhibitory postsynaptic current,short-term memory,long-term memory,pairedpulse facilitation,and spike-timing-dependent *** optical and electrical modulation mechanisms are confirmed to arise from the a-Si:h/a-Ga_(2)O_(3) heterojunction structure and interface effects,and the device is shown to operate at low power in both optical and electrical *** all-optical weight modulation function is applied to the wavelength-differential behavior response of zebrafish,successfully mimicking the color perception process of the ***,to verify the translation of the optoelectrical-derived synaptic behaviors of the phototransistor into artificial neuromorphic computation,handwritten digit image recognition of the Modified National Institute of Standards and Technology dataset is performed by a convolutional neural network,with a demonstrated average learning accuracy of 98.46%.These findings verify the applicability of the synaptic a-Si:h/a-Ga_(2)O_(3) phototransistor in neuromorphic computing.

关键词： synaptic phototransistor artificial synapse phototaxis neuromorphic computing interface charge state optoelectronic synaptic device

覆膜支架和裸支架治疗恶性上腔静脉综合征的比较队列研究

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国际医学放射学杂志 2013年第3期 272-273页

作者： D.I.Gwon G.Y.ko J.h.kim J.h.Shin h.k.yoon k.B.Sung 丁静 Department of Radiology and Research Institute of Radiology University of Ulsan College of MedicineAsan Medical Center

目的对自膨式聚四氟乙烯(ePTFE)覆膜支架和裸支架治疗恶性上腔静脉(SVC)综合征的效果进行评估。材料与方法本研究经过机构审查委员会的批准,并获得了病人书面知情同意书。从2009年1月—2011年9月由于SVC综合征进行ePTFE覆盖支架置入术... 详细信息

目的对自膨式聚四氟乙烯(ePTFE)覆膜支架和裸支架治疗恶性上腔静脉(SVC)综合征的效果进行评估。材料与方法本研究经过机构审查委员会的批准,并获得了病人书面知情同意书。从2009年1月—2011年9月由于SVC综合征进行ePTFE覆盖支架置入术的37例连续病人(33例男性,4例女性,年龄35～81岁,平均60.3岁)被纳入前瞻性研究。将这些病人的数据与从2005年1月至2008年12月由于SVC综合征进行裸支架置入术的36例连续病人(31例男性,5例女性,年龄41～81岁,平均62.3岁)的回顾性研究数据进行比较。恶性上腔静脉综合征的原因包括鳞状细胞癌(n=27)、腺癌(n=25)、小细胞癌(n=15)、胸腺癌(n=3)、侵袭性胸腺瘤(n=2)和乳腺癌(n=1)。支架通畅率和病人的生存率使用kaplan-Meier分析法计算,组间比较用log-rank检验。结果所有病人支架置入在技术上都是成功的。两组均未发生并发症。kaplan-Meier分析法表明,与裸支架相比(在1、3、6和12个月分别为97%、79%、67%和48%,P=0.038),覆膜支架有较高的累积通畅率(在1、3、6和12个月分别为97%、94%、94%和94%)。临床成功率的差异没有统计学意义(P=0.674),病人的生存率差异也没有统计学意义(P=0.549)。覆膜支架组的生存期为141d(95%CI:81～201d),裸支架为100d(95%CI:60～140d)。结论 ePTFE覆膜支架的血管内置入术是治疗恶性SVC综合征的一种安全有效的方法并且在支架通畅方面优于裸支架。

关键词：恶性上腔静脉综合征覆膜支架裸支架

Photo-induced crosslinked and anti-PD-L1 peptide incorporated liposomes to promote PD-L1 multivalent binding for effective immune checkpoint blockade therapy

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Acta Pharmaceutica Sinica B 2024年第3期14卷 1428-1440页

作者： Youngjoo Lee Sukyung Song Suah Yang Jinseong kim Yujeong Moon Nayeon Shim hong Yeol yoon Sehoon kim Man kyu Shim kwangmeyung kim kU-kIST Graduate School of Converging Science and Technology Korea UniversitySeoul 02841Republic of Korea Medicinal Materials Research Center Biomedical Research DivisionKorea Institute of Science and Technology(KIST)Seoul 02792Republic of Korea College of Pharmacy Graduate School of Pharmaceutical SciencesEwha Womans UniversitySeoul 03760Republic of Korea Department of Bioengineering Korea UniversitySeoul 02841Republic of Korea

Immune checkpoint blockade(ICB)therapy targeting PD-L1 via monoclonal antibody(m Ab)has shown extensive clinical benefits in the diverse types of advanced ***,most patients are completely refractory to ICB therapy owing to the PD-L1 recycling ***,we propose photo-induced crosslinked and anti-PD-L1 peptide incorporated liposomes(immune checkpoint blockade liposomes;ICB-LPs)to promote PD-L1 multivalent binding for inducing lysosomal degradation of PD-L1 in tumor *** ICB-LPs are prepared by formulation of DC_(8,9)PC with photo-polymerized diacetylenic moiety,1,2-dipalmitoylphosphatidylcholine(DPPC)and anti-PD-L1peptide(D-form NYSkPTDRQYhF)-conjugated DSPE-PEG_(2k)(anti-PD-L1-DSPE-PEG_(2k))in a molar ratio of 45:45:10,followed by cross-linking of liposomal bilayer upon UV *** 10 mol% antiPD-L1-DSPE-PEG_(2k)incorporated ICB-LPs have a nano-sized lipid bilayer structure with an average diameter of 137.7±1.04 nm,showing a high stability in serum ***,the ICB-LPs efficiently promote the multivalent binding with PD-L1 on the tumor cell membrane,which are endocytosed with aim to deliver PD-L1 to the lysosomes,wherein the durable PD-L1 degradation is observed for72 h,in contrast to anti PD-L1 m Abs showing the rapid PD-L1 recycling within 9 *** in vitro coculture experiments with CD8^(+)T cells show that ICB-LPs effectively enhance the T cell-mediated antitumor immune responses against tumor cells by blocking the PD-L1/PD-1 *** ICB-LPs are intravenously injected into colon tumor-bearing mice,they efficiently accumulate within the targeted tumor tissues via both passive and active tumor targeting,inducing a potent T cell-mediated antitumor immune response by effective and durable PD-L1 ***,this study demonstrates the superior antitumor efficacy of crosslinked and anti-PD-L1 peptide incorporated liposome formulation that promotes PD-L1 multivalent binding for trafficking of PD-L1 toward

关键词： Cancer immunotherapy Immune checkpoint blockade PEGylated liposome Crosslinked lipid nanoparticles Anti-PD-L1 peptide Tumor-targeting PD-L1 multivalent binding Lysosomal PD-L1 degradation

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Advancing oxygen separation:insights from experimental and computational analysis of La_(0.7)Ca_(0.3)Co_(0.3)Fe_(0.6)M_(0.1)O_(3-δ)(M=Cu,Zn)oxygen transport membranes

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Frontiers of Chemical Science and Engineering 2024年第6期18卷 17-29页

作者： Guoxing Chen Wenmei Liu Marc Widenmeyer Xiao Yu Zhijun Zhao Songh.k.yoon Ruijuan Yan Wenjie Xie Armin Feldhoff Gert homm Emanuel Ionescu Maria Fyta Anke Weidenkaff Fraunhofer Research Institution for Materials Recycling and Resource Strategies IWkS Alzenau 63755Germany Electrochemistry Laboratory Paul Scherrer InstituteVilligen PSI 5232Switzerland Department of Materials and Earth Sciences Materials and ResourcesTechnical University of DarmstadtDarmstadt 64287Germany Institute of Physical Chemistry and Electrochemistry Leibniz University HannoverHannover 30167Germany Institute for Computational Physics University of StuttgartStuttgart 70569Germany Computational Biotechnology RWTH AachenAachen 52074Germany

In this study,perovskite-type La_(0.7)Ca_(0.3)Co_(0.3)Fe_(0.6)M_(0.1)O_(3-δ)(M=Cu,Zn)powders were synthesized using a scalable reverse co-precipitation method,presenting them as novel materials for oxygen transport *** comprehensive study covered various aspects including oxygen permeability,crystal structure,conductivity,morphology,CO_(2) tolerance,and long-term regenerative durability with a focus on phase structure and *** membrane La_(0.7)Ca_(0.3)Co_(0.3)Fe_(0.6)M_(0.1)O_(3-δ)exhibited high oxygen permeation fluxes,reaching up to 0.88 and 0.64 mL·min^(−1)·cm^(−2) under air/he and air/CO_(2) gradients at 1173 k,*** 1600 h of CO_(2) exposure,the perovskite structure remained intact,showcasing superior CO_(2) resistance.A combination of first principles simulations and experimental measurements was employed to deepen the understanding of Cu/Zn substitution effects on the structure,oxygen vacancy formation,and transport behavior of the *** findings underscore the potential of this highly CO_(2)-tolerant membrane for applications in high-temperature oxygen *** enhanced insights into the oxygen transport mechanism contribute to the advancement of next-generation membrane materials.

关键词： perovskite oxygen permeation membrane oxygennionsdiffusiono xygen vacancy formation energy energy barrier

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经导管动脉栓塞术用于胃癌伴急性出血病人

国际医学放射学杂志 2009年第3期 309-309页

作者： h.J.Lee J.h.Shin h.k.yoon G.Y.ko D.I.Gwon 陈柱 Department of Radiology and Research Institute of Radiology University of Ulsan College of MedicineAsan Medical Center388-1Pungnap-2dongSongpa-guSeoul138-736Korea

评价经导管动脉栓塞术治疗不能切除胃癌出血的安全性和临床效果。对23例不能切除的胃癌出血病人行经导管动脉栓塞术。23例病人中,8例表现出活动性出血的征象如对比剂外渗或假性动脉瘤;7例仅表现出肿瘤染色;另外8例病人血管成像表现为阴... 详细信息

评价经导管动脉栓塞术治疗不能切除胃癌出血的安全性和临床效果。对23例不能切除的胃癌出血病人行经导管动脉栓塞术。23例病人中,8例表现出活动性出血的征象如对比剂外渗或假性动脉瘤;7例仅表现出肿瘤染色;另外8例病人血管成像表现为阴性。所有的栓塞均成功,且没有与栓塞相关性并发症。

关键词：栓塞胃癌出血

双能量X线吸收成像在检测非典型股骨转子下骨折病人骨折前髋关节病灶中的价值

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国际医学放射学杂志 2014年第2期 175-175页

作者： S.kim k.h.Yang h.Lim Y.k.Lee h.k.yoon C.W,Oh 陆雪芳 Dept of Orthopedic Surgery Gangnam Severance HospYonsei Univ College of Medicine 211 Eonju -ro Gangnam -Gu Seoul 135-720 South Korea

目的回顾性研究利用双能量X线吸收法(DXA)可提前多久、多早显示非典型股骨转子下骨折(ASF)病人的骨折前病灶,并探讨DXA是否可用于ASF前期表现的评估及

关键词：股骨转子前驱症状早期症状骨折病人髋关节病灶 DXA 非典型

3110例经皮经肝胆道引流术后肝动脉损伤情况

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国际医学放射学杂志 2012年第1期 89-89页

作者： S.h.Choi D.Ⅱ Gwon G.Y.ko k.B.Sung h.k.yoon J.h.Shin 廖华强 Department of Radiology and Research Institute of Radiology University of Ulsan College of MedicineAsan Medical Center86 Asanbyeongwon-gilSongpa-guSeoul 138-736Korea

目的评估3110例经皮经肝胆道引流术(PTBD)后肝动脉损伤发生率、相关危险因子及经动脉栓塞(TAE)的疗效。材料与方法回顾性分析2003年1月—2008年12月期间3110例病人共3780人次PTBD术。研究获机构审查

关键词：经皮经肝胆道引流术肝动脉发生率动脉损伤 PTBD