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Safety of rectal indomethacin(100 mg)for the prevention of post-ERCP pancreatitis in the Japanese population:A single-center prospective pilot study

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Hepatobiliary & Pancreatic Diseases International 2022年第4期21卷 406-408页

作者： Kotaro Takeshita Satoshi Asai naoki Fujimoto Takumi Ichinona Eisuke Akamine Mamoru Takenaka Department of Gastroenterology Tane General HospitalOsaka 550-0025Japan Department of Gastroenterology and Hepatology Kindai University Faculty of MedicineOsaka-Sayama 589-8511Japan

To the Editor:Endoscopic retrograde cholangiopancreatography(ERCP)causes adverse events;post-ERCP pancreatitis(PEP)is one of the frequent adverse ***,the efficacy of rectal administration of non-steroidal anti-inflamm... 详细信息

关键词： prevention ERCP drugs

Water-resistant organic thermoelectric generator with >10μW output

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Carbon Energy 2023年第4期5卷 55-67页

作者： Shinichi Hata Kanto Maeshiro Misaki Shiraishi Soichiro Yasuda Yuta Shiozaki Koudai Kametani Yukou Du Yukihide Shiraishi naoki Toshima Department of Applied Chemistry Faculty of EngineeringSanyo‐Onoda City UniversityYamaguchiJapan Graduate School of Engineering Sanyo‐Onoda City UniversityYamaguchiJapan College of Chemistry Chemical Engineeringand Materials ScienceSoochow UniversitySuzhouPeople's Republic of China

Flexible p–n thermoelectric generator(TEG)technology has rapidly advanced with power enhancement and size *** achieve a stable power supply and highly efficient energy conversion,absolute chemical stability of n-type materials is essential to ensuring large temperature differences between device terminals and ambient *** the aim of improving the long-term stability of the n-type operation of carbon nanotubes(CNTs)in air and water,this study uses cationic surfactants,such as octylene-1,8-bis(dimethyldodecylammonium bromide)(12-8-12),a gemini surfactant,to stabilize the nanotubes in a coating,which retains the n-doped state for more than 28 days after exposure to air and water in *** with 10 p-n units of 12-8-12/CNT(n-type)and sodium dodecylbenzene sulfonate/CNT(p-type)layers are manufactured,and their water stability is *** initial maximum output of 16.1μW(75 K temperature difference)is retained after water immersion for 40 days without using a sealant to prevent TEG module *** excellent stability of these CNT-based TEGs makes them suitable for underwater applications,such as battery-free health monitoring and information gathering systems,and facilitates the development of soft electronics.

关键词： gemini surfactant n-type carbon nanotube surfactant doping thermoelectric properties water-resistant generators water stability

Possible modulated γ-ray emission from the transitional millisecond pulsar binary PSR J1023+0038

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Research in Astronomy and Astrophysics 2018年第10期18卷 109-116页

作者： Yi Xing Zhong-Xiang Wang Jumpei takata Key Laboratory for Research in Galaxies and Cosmology Shanghai Astronomical Observatory Chinese Academy of Sciences School of Physics Huazhong University of Science and Technology

We report the results from our analysis of Fermi Large Area Telescope （LAT） data for the transitional millisecond pulsar binary PSR J1023＋0038. The time period of the data is nearly 9 yr, and that after the source＇s transition, in June 2013 from the disk-free state to the active state of having an accretion disk, is approximately 4 yr. We identify a high-energy 〉5.5 GeV component in the source＇s spectrum in the active state, and find this component is only significantly detected in half of the orbital phase centered at the descending node （when the pulsar is moving towards the Earth）. Considering the pulsar scenario proposed for multi-frequency emission from the source, in which the pulsar is still active and a cold-relativistic pulsar wind inverse-Compton scatters the photons from the accretion disk, we discuss the origin of the high-energy component. In order to explain the observed spectrum, a power-law distribution of particles, with an index of ~3, in the pulsar wind is required, while the orbital variations are possibly due to changes in power-law index as a function of orbital phase.

关键词： gamma rays stars - binaries eclipsing - stars neutron

Prediction of fuel cell performance degradation using a combined approach of machine learning and impedance spectroscopy

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Journal of Energy Chemistry 2023年第12期87卷 32-41,I0003页

作者： Zewei Lyu Yige Wang Anna Sciazko Hangyue Li Yosuke Komatsu Zaihong Sun Kaihua Sun naoki Shikazono Minfang Han Institute of Industrial Science The University of TokyoTokyo 153-8505Japan Department of Energy and Power Engineering Tsinghua UniversityBeijing 100084China Xuzhou Huatsing Jingkun Energy Co. Ltd.Xuzhou 221005JiangsuChina

Accurate prediction of performance degradation in complex systems such as solid oxide fuel cells is crucial for expediting technological ***,significant challenges still persist due to limited comprehension of degradation mechanisms and difficulties in acquiring in-situ *** this study,we propose an effective approach that integrates long short-term memory(LSTM) neural network and dynamic electrochemical impedance spectroscopy(DEIS).This integrated approach enables precise prediction of future evolutions in both current-voltage and EIS features using historical testing data,without prior knowledge of degradation *** short-term predictions spanning hundreds of hours,our approach achieves a prediction accuracy exceeding 0.99,showcasing promising prospects for diagnostic ***,for long-term predictions spanning thousands of hours,we quantitatively determine the significance of each degradation mechanism,which is crucial for enhancing cell ***,our proposed approach demonstrates satisfactory predictive ability in both time and frequency domains,offering the potential to reduce EIS testing time by more than half.

关键词： Solid oxide fuel cell Performance degradation Electrochemical impedance spectroscopy Longshort-term memory Machine learning

Efficient visible-light-driven water oxidation by single-crystal Ta_(3)N_(5)nanoparticles

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Nano Research 2023年第4期16卷 4562-4567页

作者： Zheng Wang Jeongsuk Seo Takashi Hisatomi Mamiko Nakabayashi Jiadong Xiao Shanshan Chen Lihua Lin Zhenhua Pan Mary Krause Nick Yin Gordon Smith Naoya Shibata Tsuyoshi takata Kazunari Domen Research Initiative for Supra-Materials Interdisciplinary Cluster for Cutting Edge ResearchShinshu University4-17-1 WakasatoNagano-shiNagano 380-8553Japan Research Center for Eco-Environmental Sciences Chinese Academy of SciencesBeijing 100085China Institute of Engineering Innovation The University of Tokyo2-11-16 YayoiBunkyo-kuTokyo 113-8656Japan Global Advanced Metals Inc. 1223 County Line RoadBoyertownPA 19512USA Office of University Professors The University of Tokyo2-11-16 YayoiBunkyo-kuTokyo 113-8656Japan

Ta3N5 is regarded as a promising photocatalyst for solar water splitting because of its excellent visible light absorption characteristics and simple *** Ta3N5 photocatalysts prepared from oxide precursors typically comprise aggregated polycrystalline particles with defects and grain boundaries that reduce the water oxidation activity of the *** the present work,well-dispersed Ta3N5 nanoparticulate single crystals were synthesized via a mild nitridation process using pure Ta metal nanopowder or Ta nanopowder mixed with *** resulting high-quality Ta3N5 nanoparticles,after loading with an oxygen evolution cocatalyst,exhibited impressively high photocatalytic performance during O_(2)evolution from a sacrificial AgNO3 solution,with an apparent quantum yield of 9.4%at 420 *** findings suggest a new approach to the facile fabrication of nanostructured single-crystal photocatalysts for efficient solar water splitting,based on the use of metal nanopowders.

关键词： Ta3N5 photocatalyst nanoparticle single crystal O_(2)evolution metallic Ta precursor

Mucosal patterns change after Helicobacter pylori eradication:Evaluation using blue laser imaging in patients with atrophic gastritis

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World Journal of Gastroenterology 2023年第17期29卷 2657-2665页

作者： Yoshiyuki Nishikawa Yoshio Ikeda Hidehiro Murakami Shin-Ichiro Hori Megumi Yoshimatsu naoki Nishikawa Department of Gastroenterology Nishikawa Gastrointestinal ClinicMatsuyama 790-0878EhimeJapan Endoscopy Center Ehime University HospitalToon 791-0295EhimeJapan Department of Internal Medicine Saiseikai Matsuyama HospitalMatsuyama 791-8026EhimeJapan Department of Gastroenterology Himeji Red Cross HospitalHimeji 670-8540HyogoJapan Department of Gastroenterology National Hospital Organization Shikoku Cancer CenterMatsuyama 791-0280EhimeJapan Department of Gastroenterology Matsuyama Shimin HospitalMatsuyama 790-0067EhimeJapan

BACKGROUND Mucosal patterns(MPs)observed on blue laser imaging in patients with atrophic gastritis can be classified as spotty,cracked,and ***,we hypothesized that the spotty pattern may change to the cracked pattern after Helicobacter pylori(***)*** To further substantiate and comprehensively investigate MP changes after *** eradication in a larger number of *** We included 768 patients who were diagnosed with atrophic gastritis with evaluable MP using upper gastrointestinal endoscopy at the Nishikawa Gastrointestinal Clinic,*** them,325 patients were ***-positive,and of them,101 patients who underwent upper gastrointestinal endoscopy before and after *** eradication were evaluated for post-eradication MP *** patients’MPs were interpreted by three experienced endoscopists who were blinded to their clinical *** Among 76 patients with the spotty pattern before or after *** eradication,the pattern disappeared or decreased in 67 patients[88.2%,95%confidence interval(CI):79.0%-93.6%),appeared or increased in 8 patients(10.5%,95%CI:5.4%-19.4%),and showed no change in 1 patient(1.3%,95%CI:0.2%-7.1%).In 90 patients with the cracked pattern before or after *** eradication,the pattern disappeared or decreased in 7 patients(7.8%,95%CI:3.8%-15.2%),appeared or increased in 79 patients(87.8%,95%CI:79.4%-93.0%),and showed no change in 4 patients(4.4%,95%CI:1.7%-10.9%).In 70 patients with the mottled pattern before or after *** eradication,the pattern disappeared or decreased in 28 patients(40.0%,95%CI:29.3%-51.7%),appeared or increased in 35 patients(50.0%,95%CI:38.6%-61.4%),and showed no change in 7 patients(10.0%,95%CI:4.9%-19.2%).CONCLUSION After *** eradication,MPs changed from spotty to cracked in most patients,which may help endoscopists easily and precisely evaluate ***-related gastritis status.

关键词： Atrophic gastritis Helicobacter pylori Gastrointestinal endoscopy Image enhancement Classification

Do predators prefer toxic animals?A case of chemical discrimination by an Asian snake that sequesters firefly toxins

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Current Zoology 2022年第6期68卷 627-634页

作者： Masaya FUKUDA Rinako UJIIE Takato INOUE Qin CHEN Chengquan CAO Li DING naoki MORI Akira MORI Department of Zoology Graduate School of ScienceKyoto UniversityKyoto 606-8502Japan Department of Applied Life Science Graduate School of AgricultureKyoto UniversityKyoto 606-8502Japan Chengdu Institute of Biology Chinese Academy of SciencesChengduSichuan 610041China College of Life Sciences Leshan Normal UniversityLeshanSichuan 614000China

Several Asian natricine snakes of the genus Rhabdophis feed on toads and sequester steroidal cardiac toxins known as bufadienolides(BDs)from them.A recent study revealed that species of the Rhabdophis nuchalis Group ingest lampyrine fireflies to sequester *** several species of fireflies are distributed in the habitat of the *** Group,only lampyrine fireflies,which have BDs,are included in the diet of these ***,we hypothesized that the *** Group chemically distinguishes fireflies that have BDs from those that do not have *** also predicted that the *** Group detects BDs as the chemical cue of toxin *** test these predictions,we conducted 3 behavioral experiments using Rhabdophis chiwen,which belongs to the *** *** the first experiment,*** showed a moderate tongue flicking response to cinobufagin,a compound of *** the other hand,the snake showed a higher response to the chemical stimuli of lampyrine fireflies(BD fireflies)than those of lucioline fireflies(non-BD fireflies).In the second experiment,in which we provided live BD and non-BD fireflies,the snake voluntarily consumed only the *** the third,a Y-maze experiment,the snake tended to select the chemical trail of BD fireflies more frequently than that of non-BD *** results demonstrated that *** discriminates BD fireflies from non-BD fireflies,but the prediction that BDs are involved in this discrimination was not fully *** identify the proximate mechanisms of the recognition of novel toxic prey in the *** Group,further investigation is necessary.

关键词： Bufadienolides chemical preference fireflies Rhabdophis toxin sequestration

Seeing Is Believing:A Wavy N-Heteroarene with 20 Six-Membered Rings Linearly Annulated in a Row

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CCS Chemistry 2022年第11期4卷 3491-3496页

作者： Zhongbo Zhang Zilong Wang naoki Aratani Xiaozhang Zhu Qichun Zhang School of Materials Science and Engineering Nanyang Technological UniversitySingapore 639798 Division of Materials Science Nara Institute of Science and TechnologyIkomaNara 630-0192 Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of SciencesBeijing 100190 Department of Materials Science and Engineering Center of Super-Diamond and Advanced Films(COSDAF)City University of Hong KongHong Kong SAR 999077

Structurally well-defined arenes with higher numbers of linearly-fused six-member rings(n≥10)are important and highly desirable not only because of their experimental challenges but also due to their fundamental interests and the curiosity of their structure-property *** this research,we successfully synthesized a novel large N-heteroarene(N20)with 20 linearly-fused six-membered rings,which is the longest N-heteroarene(4.7 nm)confirmed by single-crystal X-ray diffraction(SCXRD)analysis so *** as-prepared arene displays a wave-like framework rather than a rigid ***,N20 shows high molar absorptivity of 364,000 M^(−1) cm^(−1) with its fluorescence extended to the near-infrared region.

关键词： N-heteroarenes single-crystal structure linear annulation optical properties

3D reconstruction size effect on the quantification of solid oxide fuel cell nickel-yttria-stabilized-zirconia anode microstructural information using scanning electron microscopy-focused ion beam technique

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Science Bulletin 2016年第17期61卷 1317-1323页

作者： Zhenjun Jiao naoki Shikazono Institute of Industrial Science The University of Tokyo

Self-made conventional nickel-yttria-stabilized zirconia composite anodes after reduction and 500 h operation were analyzed by three-dimensional microstructure reconstruction based on focused ion beam-scanning electron microscopy *** area,threephases-boundary density and phase volume fraction were measured based on the three-dimensional microstructure reconstruction to quantitatively study the statistical characterization of solid oxide fuel cell nickel-yttria-stabilizedzirconia anode microstructure before and after *** is found that for anode operated with long time,it is necessary to increase the corresponding three-dimensional reconstruction size to suppress the influence of microstructure variation caused by Ni agglomeration in order to obtain more accurate microstructural quantification information.

关键词： FIB-SEM 3D reconstruction TPB density Tetragonal mesh