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Real-Time Tunable Gas Sensing Platform Based on SnO_(2) Nanoparticles Activated by Blue Micro-Light-Emitting Diodes

Nano-Micro Letters 2024年第12期16卷 103-119页

作者： Gi Baek Nam Jung-El Ryu Tae Hoon Eom Seung Ju Kim Jun Min Suh Seungmin Lee Sungkyun Choi Cheon Woo Moon Seon Ju Park Soo Min Lee Byungsoo Kim Sung Hyuk Park Jin Wook Yang Sangjin Min Sohyeon Park Sung Hwan Cho Hyuk Jin Kim Sang Eon Jun Tae Hyung Lee Yeong jae Kim jae Young Kim Young Joon Hong Jong-In shim Hyung-Gi Byun Yongjo Park Inkyu Park Sang-Wan Ryu Ho Won Jang Department of Materials Science and Engineering Seoul National UniversitySeoul 08826Republic of Korea Research Laboratory of Electronics Department of Mechanical EngineeringMassachusetts Institute of TechnologyCambridgeMA 02139USA Ming Hsieh Department of Electrical and Computer Engineering University of Southern CaliforniaLos AngelesCA 90089USA Department of Display Materials Engineering Soonchunhyang UniversityAsan 31538Republic of Korea Department of Photonics and Nanoelectronics BK21 FOUR ERICA-ACE CenterHanyang University ERICAAnsan 15588Republic of Korea Department of Nanotechnology and Advanced Materials Engineering Sejong UniversitySeoul 05006Republic of Korea Department of Electronics Information and Communication EngineeringKangwon National UniversitySamcheok 25913Republic of Korea Advance Institute of Convergence Technology Seoul National UniversitySuwon 16229Republic of Korea Department of Mechanical Engineering Korea Advanced Institute of Science and TechnologyDaejeon 34141Republic of Korea Department of Physics Chonnam National UniversityGwangju 500-757Republic of Korea

Micro-light-emitting diodes(μLEDs)have gained significant interest as an activation source for gas sensors owing to their advantages,including room temperature operation and low power ***,despite these benefits,challenges still exist such as a limited range of detectable gases and slow *** this study,we present a blueμLED-integrated light-activated gas sensor array based on SnO_(2)nanoparticles(NPs)that exhibit excellent sensitivity,tunable selectivity,and rapid detection with micro-watt level power *** optimal power forμLED is observed at the highest gas response,supported by finite-difference time-domain ***,we first report the visible light-activated selective detection of reducing gases using noble metal-decorated SnO_(2)*** noble metals induce catalytic interaction with reducing gases,clearly distinguishing NH3,H2,and ***-time gas monitoring based on a fully hardwareimplemented light-activated sensing array was demonstrated,opening up new avenues for advancements in light-activated electronic nose technologies.

关键词： Micro-LED Gas sensor array Low power consumption Metal decoration Real-time detection

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Microstructure and Mechanical Properties of Mg-Al-Ca-Nd Alloys Fabricated by Gravity Casting

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Journal of Materials Science & Technology 2008年第1期24卷 85-88页

作者： Hyeon-Taek Son jae-Seol Lee Ik-Hyun Oh Chang-Seog Kang Korea Institute of Industrial Technology 1110-90ryong-dong Buk-gu Gwangju 500-480 South Korea

The aims of this study are to investigate the effects of Nd addition in the Mg-Al-Ca alloys on microstructure and mechanical *** of as-cast Mg-5Al-3Ca alloy containing Nd consists ofα-Mg matrix, eutectic phase and Al-Nd rich intermetallic *** Nd addition was increased,α-Mg matrix morphology was changed from dendritic to equiaxed grains and average value of grain size was *** addition to Mg-5Al-3Ca based alloys resulted in the formation of Al-Nd rich intermetallic compounds at grain boundary andα-Mg matrix *** these Al-Nd rich intermetallic compounds were dispersed *** these alloys,two kinds of eutectic phases were observed,*** irregular-shape structure at grain boundary and fine needle-shape structure in theα-Mg matrix *** is found that the ultimate strength showed the maximum value of 271 MPa at Mg-5Al-3Ca-2Nd alloy and elongation was decreased as the addition of Nd was increased.

关键词： Mg-AI-Ca alloy Neodymium (Nd) Rare earth element

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Magnifying endoscopy for the diagnosis of specialized intestinal metaplasia in short-segment Barrett's esophagus

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World Journal of Gastroenterology 2013年第41期19卷 7089-7096页

作者： Nam Seok Ham jae Young Jang Sung Woo Ryu Ji Hye Kim Eui Ju Park Woong Cheul Lee Kwang Yeun shim Soung Won Jeong Hyun Gun Kim Tae Hee Lee Sung Ran Jeon Jun Hyung Cho Joo Young Cho So Young Jin Ji Sung Lee Institution for Digestive Research Digestive Disease CenterDepartment of Internal MedicineSoonchunhyang University HospitalSeoul 140-743South Korea Department of Pathology Soonchunhyang University HospitalSeoul 140-743South Korea Biostatistical Consulting Unit Soonchunhyang University HospitalSeoul 140-743South Korea

AIM:To determine whether magnified observation of short-segment Barrett’s esophagus(BE)is useful for the detection of specialized intestinal metaplasia(SIM).METHODS:Thirty patients with suspected short-segment BE underwent magnifying endoscopy up to×*** magnified images were analyzed with respect to their pit-patterns,which were simultaneously classified into five epithelial types[Ⅰ(small round),Ⅱ(straight),Ⅲ(long oval),Ⅳ(tubular),Ⅴ(villous)]by Endo’s ***,a 0.5%solution of methylene blue(MB)was sprayed over columnar *** patterns of the magnified image and MB staining were *** were obtained from the regions previously observed by magnifying endoscopy and MB ***:Three of five patients with a typeⅤ(villous)epithelial pattern had SIM,whereas 21 patients with a non-typeⅤepithelial patterns did not have *** sensitivity,specificity,accuracy,positive predictive value,and negative predictive value of pit-patterns in detecting SIM were 100%,91.3%,92.3%,60%and100%,respectively(P=0.004).Three of the 12 patients with positive MB staining had SIM,whereas 14patients with negative MB staining did not have *** sensitivity,specificity,accuracy,positive predictive value,and negative predictive value of MB staining in detecting SIM were 100%,60.9%,65.4%,25%and100%,respectively(P=0.085).The specificity and accuracy of pit-pattern evaluation were significantly superior compared with MB staining for detecting SIM by comparison with the exact McNemar’s test(P=0.0391).CONCLUSION:The magnified observation of a shortsegment BE according to the mucosal pattern and its classification can be predictive of SIM.

关键词： Short-segment Barrett’s esophagus Magnifying endoscopy Methylene blue chromoendoscopy Specialized intestinal metaplasia Dysplasia Esophageal adenocarcinoma Diagnosis

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High-performance photoelectrochemical cells with MoS2 nanoflakes/TiO2 photoanode on 3D porous carbon spun fabric

Advanced Sensor and Energy Materials

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Advanced Sensor and Energy Materials 2024年第1期3卷 1-10页

作者： Hyunjin Cho Ji-Yeon Kim Dong Su Shin Joo Song Lee jaeho shim In-Ho Lee Won Kook Choi Namhee Kwon Soohyung Park Mehmet Suha Yazici Young jae Park Ju Hee You Seok-Ho Seo Donghee Park Dong Ick Son Institute of Advanced Composite Materials Korea Institute of Science and Technology92 Chudong-roBongdong-eupWanju-gunJeollabuk-do55324Republic of Korea Center for Opto-Electronic Materials and Devices Post-Silicon Semiconductor InstituteKorea Institute of Science and TechnologyHwarangro 14 Gil 5Seongbuk GuSeoul02792Republic of Korea KIST School Department of Nanomaterials and Nano ScienceUniversity of Science and Technology(UST)217Gajeong-roYuseong-guDaejeon34113Republic of Korea Advanced Analysis Center Korea Institute of Science and TechnologyHwarangro 14 Gil 5Sungbuk GuSeoul02792Republic of Korea Energy Institute Istanbul Technical University(ITU)Maslak34467 IstanbulTürkiye Division of Technology Business National Institute of Science and Technology77Cheongam-roNam-GuPohangGyeongbuk37673Republic of Korea

A solar-driven photoelectrochemical(PEC)cell is emerging as one of the promising clean hydrogen generation *** of semiconductor heterojunctions and surface morphologies of photoelectrodes in a PEC cell has been a primitive approach to boost its *** study presents that a molybdenum disulfide(MoS_(2))nanoflakes photoanode on 3-dimensional(3D)porous carbon spun fabric(CSF)as a substrate effectively enhances hydrogen generations due to sufficiently enlarged surface ***_(2)is grown on CSFs utilizing a hydrothermal *** three different MoS_(2)coating morphologies depending on the amount of MoS_(2)precursor and hydrothermal growth time,film shape MoS_(2)on CSFs had the largest surface area,exhibiting the highest photocurrent density of 26.48 mA/cm^(2)and the highest applied bias photon-to-current efficiency(ABPE)efficiency of 5.32%at 0.43 ***,with a two-step growth method of sputtering and a subsequent hydrothermal coating,continuous TiO_(2)/MoS_(20 heterojunctions on a porous CSF further promoted the photoelectrochemical performances due to their optimized bandgap *** surface area,enhanced charge transfer,and utilization of visible light enable a highly efficient MoS_(2)/TiO_(2)/CSF photoanode with a photocurrent density of 33.81 mA/cm^(2)and an ABPE of 6.97%at 0.87 *** hydrogen generation amount of the PEC cell with MoS_(2)/TiO_(2)/CSF photoanode is 225.4μmol/L after light irradiation of 60 s.

关键词： Photoelectrochemical cell Photoanode MoS_(2) TiO_(2 3D porous carbon spun fabric Conformal coating

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Influence of Red Pepper (<i>Capsicum annuum</i>) Addition on Bioenergy Production in Microbial Fuel Cells

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Journal of Sustainable Bioenergy Systems 2019年第4期9卷 179-188页

作者： Sohyun Chang Min jae Shin Yujin Kim Sung Jun Jang Seog In Moon Seoyeon Jeong Richard shim Fengjun Shen Sara Kang Paul S. Chung School of Arts & Sciences Johns Hopkins University Baltimore MD USA Fuzbien Technology Institute Rockville MD USA Youth with Talents Fairfax VA USA

The current study was performed to evaluate the beneficial effect in the power output of microbial fuel cells (MFCs) through supplementation of dried red pepper (Capsicum annuum) powder into the anodic chamber. Mediator-less H-type MFCs were set up where the anode chamber contained rumen microorganisms as inocula on cellulose (Avicel) and the cathode chamber of phosphate buffered saline (pH 7.4), both separated by cation exchange membrane. Electrical power generation in MFC was monitored daily over a 10-day period and the accumulated amounts and components of gaseous byproducts were measured at the end of 10 d operation of MFC. For both groups of MFCs with red pepper and the control, the head space gases collected were methane and CO2, and its volume and composition were similar between treatments. Methane and CO2 produced for 10 d operation were 210.7 and 106.5 mL, respectively, in MFC. The addition of red pepper powder caused an average power density to increase from 24.0 mW/m2 to 39.6 mW/m2 (P 2 for control and bellflower, respectively. This study provides the strong evidence that red pepper (Capsicum annuum) supplementation might modify the anaerobic fermentation characteristics of rumen microorganisms in anode chamber and improve the cellulosic bioenergy production in MFC.

关键词： MFC Capsicum annuum Bioenergy Production

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淺論大河口霸伯墓所見青銅禮器“逾制現象”的兩面性

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青铜器与金文 2018年第1期 53-68页

作者：沈載勳韓國檀國大學

一、大河口青銅器所見的'逾制現象'繼曲村—天馬晉國墓地之後,對山西絳縣横水的倗國墓地和翼城縣大河口霸國墓地的考古發掘結果先後於2006年和2011年公諸於世,進一步爲西周時期的諸侯國以及地區政治格局變遷的研究提供了寶貴資料。已有... 详细信息

一、大河口青銅器所見的'逾制現象'繼曲村—天馬晉國墓地之後,對山西絳縣横水的倗國墓地和翼城縣大河口霸國墓地的考古發掘結果先後於2006年和2011年公諸於世,進一步爲西周時期的諸侯國以及地區政治格局變遷的研究提供了寶貴資料。已有不少專家學者以倗、霸的考古發現爲基礎,對其淵源及與諸侯國晉的地位關係展開了論述。

关键词：大河口墓地墓葬形制山西省考古研究所西周中期用鼎制度

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Global Genomic Variations of Pathogenic Bacteria <i>Salmonella</i>Reading

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Computational Molecular Bioscience 2021年第3期11卷 57-68页

作者： Woo Hyung Lee Yein Jeon Jonathan S. Chung Woo Jun shim Min jae Shin Seok Gyu Han Seunghan Baek James Kim jaewoo Kim Paul S. Chung Biotechnology School of Sciences Hong Kong University of Science of Technology Hong Kong China Fuzbien Technology Institute Rockville USA Ernest Mario School of Pharmacy Rutgers University New Brunswick USA College of Letters & Sciences University of California Los Angeles USA Biology Bachelor of Science California Institute of Technology Pasadena USA School of Arts & Sciences Johns Hopkins University Baltimore USA School of Arts & Sciences University of Michigan Ann Arbor USA Youth with Talents Fairfax USA

US Centers for Disease Control and Prevention (CDC) estimates food-borne pathogenic Salmonella bacteria cause about 1.35 million infections, 26,500 hospitalizations, and 420 deaths in the U.S. every year. Outbreaks of multidrug-resistant Salmonella Reading linked mainly to raw turkey products and alfalfa sprouts have accounted for human illness including mortality. Therefore, we downloaded and compared genome sequences of 897 Salmonella Reading isolated from 27 resources in 11 countries at 21 year-points from the National Center for Biotechnology Information database. Isolates were clustered into 10 clades which consisted of 3 major and 7 minor or single node clades. Although 3 major clades included both Europe and American isolates, one clade consisted of 605 North American isolates out of 614 isolates. Evolutionary distance is more related to the continent than the source of isolation. The host source, continent (North America and Europe) and phylogenetic clade were related to the prevalence of isolates encoding Antimicrobial Resistance Genes (ARGs). Prevalence of prophages was greater in bovine and swine isolates than poultry and human isolates and the least prevalence was found in human isolates. Between continents, the prevalence of phage was greater in North Ame- rican isolates than European. The diversity of virulence factors in swine isolates differed from poultry isolate while no difference was found among continents. In conclusion, evolutionary distance is related to isolation host source rather than the continent, and genome features were distinguished by host and cluster. Our genomic analysis implies that Salmonella Reading evolved independently to environments within its lineages.

关键词： Salmonella Serovar Reading Genome Antimicrobial Resistance Genes Virulence Factors Phylogenomic Tree

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Efficacy and safety of rebamipide/nizatidine in patients with erosive gastritis: A randomized, multicenter, phase 4 study

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World Journal of Gastroenterology 2024年第48期30卷 5152-5161页

作者： Donghoon Kang Myung-Gyu Choi Ki-Nam shim Hye-Kyung Jung Seung-Joo Nam Jung Ho Park Sang Gyun Kim Nam-Hoon Kim Su Jin Hong Tae Joo Jeon jae Il Chung Hang Lak Lee Ju Yup Lee Tae Oh Kim Chang Min Lee Sun Moon Kim Jeong-Hwan Kim Jang Eon Kim Jeong Seop Moon Ho Dong Kim Wan-Sik Lee Hong Jun Park Department of Internal Medicine Seoul St.Mary’s HospitalThe Catholic University of KoreaSeoul 06591South Korea Department of Internal Medicine Ewha Womans University Seoul HospitalGastroenterology and Hepatology CenterSeoul 07985South Korea Department of Internal Medicine Ewha Womans University Mokdong HospitalSeoul 07985South Korea Department of Internal Medicine Kangwon National University School of MedicineChuncheon 24289South Korea Department of Medicine Kangbuk Samsung HospitalSungkyunkwan University School of MedicineSeoul 03181South Korea Department of Internal Medicine and Liver Research Institute Seoul National University HospitalSeoul 03080South Korea Department of Internal Medicine Ilsan Paik HospitalInje University College of MedicineGoyang 10380South Korea Department of Internal Medicine Digestive Disease CenterSoonchunhyang University Bucheon HospitalBucheon 31538South Korea Department of Internal Medicine Inje University College of MedicineSanggye Paik HospitalSeoul 01757South Korea Department of Gastroenterology Sahmyook Medical CenterSeoul 02500South Korea Department of Internal Medicine Hanyang University College of MedicineSeoul 04763South Korea Department of Internal Medicine Keimyung University School of MedicineDaegu 42601South Korea Department of Internal Medicine Inje University Haeundae Paik HospitalInje University College of MedicineBusan 48108South Korea Department of Internal Medicine Gyeongsang National University School of MedicineGyeongsang National University HospitalJinju 52727South Korea Department of Internal Medicine Konyang University HospitalDaejeon 35365South Korea Gastroenterology Center Konkuk University Medical CenterSeoul 05030South Korea Department of Gastroenterology Seoul Medical CenterSeoul 02053South Korea Department of Gastroenterology Inje University Busan Paik HospitalBusan 47392South Korea Department of Gastroenterology St.Carollo HospitalSooncheon 57931South Korea Division of Gastroenterology Department of Internal

BACKGROUND For the treatment of gastritis,rebamipide,a mucoprotective agent,and nizatidine,a gastric acid suppressant,are commonly employed *** To compare the efficacy of Mucotra®SR(rebamipide 150 mg)and Axid®(nizatidine 150 mg)combination therapy with the sole administration of Axid®in managing erosive *** A total of 260 patients diagnosed with endoscopically confirmed erosive gastritis were enrolled in this open-label,multicenter,randomized,phase 4 clinical trial,allocating them into two groups:Rebamipide/nizatidine combination twice daily vs nizatidine twice daily for 2 *** full-analysis set analysis encompassed 239 patients(rebamipide/nizatidine,n=121;nizatidine,n=118),while the per-protocol analysis included 218 patients(n=110 vs 108).Post-treatment assessments comprised primary(erosion improvement rate)and secondary(erosion and edema cure rates,erythema improvement rates,hemorrhage,and gastrointestinal symptoms)***,drug-related adverse effects were *** Primary efficacy assessment showed a statistically significant improvement rate in mucosal erosions in the combination group compared to the control group in the full-analysis set(rebamipide/nizatidine 62.0%,nizatidine 49.2%,P=0.046),with a similar trend noted in the per-protocol analysis(62.7%vs 50.0%,P=0.058).Both groups were effective in curing erosion and edema and improvement of bleeding,erythema,and gastrointestinal symptoms,whereas no inter-group differences were *** confined to the participants with gastritis symptoms,improvement of erosion was more optimal in the combination group(63.0%vs 49.5%,P=0.046).No adverse events related to the drugs were *** Rebamipide/nizatidine combination is effective in treatment of erosive gastritis.

关键词： Gastritis Erosive gastritis Combination therapy Rebamipide Nizatidine

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超临界流体萃取和高效液相色谱同时测定鸡肉中4种氟喹诺酮类药物残留

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食品科技 2007年第10期32卷 210-212页

作者：申京宇尹花仙沈在漢烟台大学食品科学与工程研究所全南大学校农业生命科学大学

建立了一种超临界流体萃取(SFE)-高效液相色谱(HPLC)同时检测鸡肉中4种氟喹诺酮类药物(FQs)的方法。SFE萃取的适宜条件是温度80℃,系统压力为300kg/cm2,总流速为3mL/min,萃取时间为30min,夹带剂甲醇的比率为30%。萃取样品用高效液相色... 详细信息

建立了一种超临界流体萃取(SFE)-高效液相色谱(HPLC)同时检测鸡肉中4种氟喹诺酮类药物(FQs)的方法。SFE萃取的适宜条件是温度80℃,系统压力为300kg/cm2,总流速为3mL/min,萃取时间为30min,夹带剂甲醇的比率为30%。萃取样品用高效液相色谱荧光检测器(激发光波长290nm,发色光波长455nm)外标法定量。氧氟沙星、诺氟沙星、环丙沙星和恩诺沙星在2.5～50μg/L浓度范围内线性良好,相关系数为0.9876～0.9996,其最低检出限为10～25μg/kg。在25～250μg/kg浓度范围内,平均加标回收率为56.6%～94.2%,相对标准偏差在1.4%～14.1%范围。

关键词：超临界流体萃取鸡肉氧氟沙星环丙沙星诺氟沙星恩诺沙星

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16S rRNA基因测序技术在肝脓疡细菌鉴定中的作用(英文)

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介入放射学杂志 2014年第10期23卷 906-912页

作者：宋伦圭 Yun Gyu Song Sang Gun shim Kwang Min Kim Dae Soo Kim Sang Haeng Choi jae Young Song Kon Ho Lee Hyung-Lyun Kang Seung-Chul Baik Woo-Kon Lee Myung Je Cho Kwang Ho Rhee Dong Hae Lee 庆尚南道昌原市三星昌原医院成均馆大学医院 Department of Radiology Samsung Changwon HospitalSungkyunkwan University School of Medicine Changwon Korea Department of Internal Medicine Samsung Changwon HospitalSungkyunkwan University School of Medicine Changwon Korea Human Derived Material Center Korea Research Institute of Bioscience and Biotechnology Daejeon Korea Unitech Science Co. Ltd. Daejeon Korea Department of Microbiology Gyeongsang National University College of Medicine Jinju Korea

目的评价16S核糖体RNA(rRNA)基因测序在肝脓疡中细菌鉴定中的应用价值。方法2012年1月—2013年12月间共20例肝脓疡行经皮置管引流的患者,分别行脓液培养,血培养和16S rRNA基因测序。利用454 GS Junior System对脓液基因组DNA行PCR和16S ... 详细信息

目的评价16S核糖体RNA(rRNA)基因测序在肝脓疡中细菌鉴定中的应用价值。方法2012年1月—2013年12月间共20例肝脓疡行经皮置管引流的患者,分别行脓液培养,血培养和16S rRNA基因测序。利用454 GS Junior System对脓液基因组DNA行PCR和16S rRNA基因测序。脓液培养,血液培养和16S rRNA基因测序结果进行分别评价。结果脓液和血液培养阳性的患者分别是9例(45%)和4例(20%)。16S rRNA基因测序细菌鉴定率为90%,明显高于传统的培养方法。结论 16S rRNA基因测序方法较传统的培养方法能更准确和有效对肝脓疡进行细菌鉴定。

关键词：肝脓疡脓肿培养宏基因组学 16S rRNA基因测序

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