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A review of challenges and opportunities in micropillar compression studies in Mg alloys

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Journal of Magnesium and Alloys 2023年第11期11卷 4043-4053页

作者： A.kodam.M.S.Gundi Y.L.Chiu I.P.Jones S.S.Singh J.Jain Department of Materials Science and Engineering Indian Institute of Technology DelhiNew Delhi 110016India School of Metallurgy and Materials University of BirminghamEdgbastonBirmingham B152TTUK Department of Materials Science and Engineering Indian Institute of Technology KanpurUttar Pradesh 208016India

This review paper provides an overview of the micropillar compression technique as applied to magnesium(Mg) and its alloys. It explores the influence of various factors, such as pillar size, shape, temperature, and strain rate on the mechanical properties of ***, the impact of alloying elements, aging, and precipitates in Mg alloys has been extensively examined, revealing their significant influence on mechanical performance. The study highlights the strength and strain hardening improvements in Mg with decreasing pillar size in micropillar compression. Furthermore, the role of precipitates as strengthening agents, affecting deformation mechanisms and overall mechanical response, is explored. These valuable insights are crucial for designing Mg-based materials with enhanced mechanical properties for advanced engineering applications.

关键词： A review of challenges and opportunities in micropillar compression studies in Mg alloys

Enhanced organic solar cell performance: Multiple surface plasmon resonance and incorporation of silver nanodisks into a grating‐structure electrode

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Opto-Electronic Advances 2019年第7期2卷 7-20页

作者： Thitirat Putnin Chutiparn Lertvachirapaiboon ryousuke Ishikawa Kazunari Shinbo Keizo Kato Sanong Ekgasit Kontad Ounnunkad Akira Baba Graduate School of Science and Technology Niigata University 8050 Ikarashi-2-nocho Nishi-ku Niigata 950-2181 Japan Department of Chemistry and Center of Excellence for Innovation in Chemistry (PERCH-CIC) Faculty of Science and Center of Excellence in Materials Science and Technology Chiang Mai University Chiang Mai 50200 Thailand Sensor Research Unit Department of Chemistry Faculty of Science Chulalongkorn University Bangkok 10330 Thailand

In this study, plasmonic nanostructures were examined to enhance the light harvesting of organic thin-film solar cells (OSCs) by multiple surface plasmon resonance (SPR) phenomena originating from the grating-coupled configuration with a Blu-ray Disc recordable (BD-R)-imprinted aluminum (Al) grating structure and the incorporation of a series of silver nanodisks (Ag NDs). The devices with such a configuration maximize the light utilization inside OSCs via light absorption, light scattering, and trapping via multiple surface plasmon resonances. Different types and sizes of metallic nanoparticles (NPs), i.e., gold nanoparticles (Au NPs), Ag nanospheres (Ag NSs), and Ag NDs, were used, which were blended separately in a PEDOT:PSS hole transport layer (HTL). The device structure comprised of grating- imprinted-Al/P3HT:PCBM/Ag ND:PEDOT:PSS/ITO. Results obtained from the J–V curves revealed that the power conversion efficiency (PCE) of grating-structured Al/P3HT:PCBM/PEDOT:PSS/ITO is 3.16%;this value is ~6% higher than that of a flat substrate. On the other hand, devices with flat Al and incorporated Au NPs, Ag NSs, or Ag NDs in the HTL exhibited PCEs ranging from 3.15% to 3.37%. Furthermore, OSCs with an Al grating substrate were developed by the incorporation of the Ag ND series into the PEDOT:PSS layer. Compared with that of a reference device, the PCEs of the devices increased to 3.32%–3.59%(11%–20% improvement), indicating that the light absorption enhancement at the active layer corresponds to the grating-coupled surface plasmon resonance and localized surface plasmon resonance excitations with strong near-field distributions penetrating into the active layer leading to higher efficiencies and subsequent better current generation.

关键词： grating-coupled surface plasmon resonance localized surface plasmon resonance Ag nanodisks organic solar cells imprinted grating

Mathematical Modeling and Computational Analysis of Underwater Topography with Global Positioning and Echo Sounder Data

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Journal of Applied Mathematics and Physics 2021年第5期9卷 1171-1179页

作者： Satoshi Iwakami Masahiko Tamega Masahide Sanada Michiaki Mohri Yoshitaka Iwakami Naoki Okamoto ryousuke Asou Shuji Jimbo Masaji Watanabe Earth Rise Company Inc. Okayama Japan Visiting Researcher Okayama University Okayama Japan Specially Appointed Professor Okayama University Okayama Japan

This study focuses on change of topography in a water area. Output data from a GPS unit and an echo sounder data were incorporated into analysis for construction of underwater topography. Comparison of two data sets ... 详细信息

关键词： Underwater Topography RTK-GPS Echo Sounder

Early effects of Lansoprazole orally disintegrating tablets on intragastric pH in CYP2C19 extensive metabolizers

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World Journal of Gastroenterology 2008年第13期14卷 2049-2054页

作者： Hatsushi Yamagishi Tomoyuki Koike Shuichi Ohara Toru Horii ryousuke Kikuchi Shigeyuki Kobayashi Yasuhiko Abe Katsunori Iijima Akira Imatani Kaori Suzuki Takanori Hishinuma Junichi Goto Tooru Shimosegawa Division of Gastroenterology Tohoku University Graduate School of Medicine 1-1 Seiryou-Machi Aobaku Sendai 9808574 Japan Division of Clinical Pharmacy Tohoku University Graduate School of Pharmaceutical Sciences 1-1 Seiryou-Machi Aobaku Sendai 9808574 Japan Division of Pharmacotherapy Tohoku University Graduate School of Pharmaceutical Sciences Department of Pharmaceutical Sciences Tohoku University Hospital 1-1 Seiryou-Machi Aobaku Sendai 9808574 Japan

AIM: To compare rabeprazole (RPZ; 10 mg) with Lansoprazole orally disintegrating tablets (LPZ; 30 mg OD) in terms of antisecretory activity and blood drug concentration after a single dose. METHODS: Eight H pylori-negative cytochrome P450 (CYP) 2C19 extensive metabolizers were assigned to receive a single oral dose of RPZ 10 mg or LPZ 30 mg OD. Twelve hour intragastric pH monitoring was perform- ed on the day of treatment. Blood samples were also collected after the administration of each drug. RESULTS: LPZ 30 mg OD induced a significantly earlier rise in blood drug concentration than RPZ 10 mg; consequently, LPZ 30 mg OD induced a significantly earlier rise in median pH in the third and fourth hours of the study. CONCLUSION: In H pylori-negative CYP2C19 extensive metabolizers, LPZ 30 mg OD induced a significantly faster inhibition of gastric acid secretion than RPZ 10 mg.

关键词： LPZ 30 mg orally disintegrating tablets Intragastric pH Blood drug concentration Cytochrome P450 2C19 extensive metabolizers H pylori-negative

Stronger inhibition of gastric acid secretion by lafutidine, a novel H_2 receptor antagonist, than by the proton pump inhibitor lansoprazole

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World Journal of Gastroenterology 2008年第15期14卷 2406-2410页

作者： Hatsushi Yamagishi Tomoyuki Koike Shuichi Ohara Toru Horii ryousuke Kikuchi Shigeyuki Kobayashi Yasuhiko Abe Katsunori Iijima Akira Imatani Kaori Suzuki Takanori Hishinuma Junichi Goto Tooru Shimosegawa Division of Gastroenterology Tohoku University Graduate School of Medicine Sendai 9808574 Japan Division of Clinical Pharmacy Tohoku University Graduate School of Pharmaceutical Sciences Sendai 9808574 Japan Division of Pharmacotherapy Tohoku University Graduate School of Pharmaceutical Sciences and Department of Pharmaceutical Sciences Tohoku University Hospital Sendai 9808574 Japan

AIM: To compare the antisecretory activity and plasma drug concentrations of a single oral dose of 10 mg lafutidine, a novel H2 receptor antagonist, with those of the proton pump inhibitor lansoprazole (LPZ) 30 mg. METHODS: Ten volunteers without H pylori infection participated in this crossover study comparing lafutidine 10 mg with LPZ 30 mg. Intragastric pH was monitored for 6 h in all participants, and blood samples were collected from four randomly selected individuals after single-dose administration of each drug. RESULTS: The median intragastric pH was significantly higher in individuals who received lafutidine 10 mg than in those who received LPZ 30 mg 2, 3, 4, 5, and 6 h after administration. Maximal plasma drug concentration was reached more promptly with lafutidine 10 mg than with LPZ 30 mg. CONCLUSION: In H pylori-negative individuals, gastric acid secretion is more markedly inhibited by lafutidinethan by LPZ.

关键词： Lafutidine Lansoprazole H2 receptor antagonists Proton pump inhibitors Antisecretory activity

Mathematical Modeling and Computational Analysis of Underwater Topography with Global Positioning and Echo Sounder Data

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Mathematical Modeling and Computational Analysis of Underwat...

Alignment of solid targets under extreme tight focus conditions generated by an ellipsoidal plasma mirror

作者： Satoshi Iwakami Masahiko Tamega Masahide Sanada Michiaki Mohri Yoshitaka Iwakami Naoki Okamoto ryousuke Asou Shuji Jimbo Masaji Watanabe Earth Rise Company Inc. Visiting Researcher Okayama University Specially Appointed Professor Okayama University

关键词： Underwater Topography RTK-GPS Echo Sounder

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Matter and Radiation at Extremes 2019年第2期4卷 30-35页

作者： Deepak Kumar Michal Smid Sushil Singh Alexander Soloviev Hannes Bohlin Konstantin Burdonov Gashaw Fente Alexander Kotov Livia Lancia Vit Leedl Sergey Makarov Michael Morrissey Sergey Perevalov Denis Romanovsky Sergey Pikuz ryousuke kodam. David Neely Paul McKenna Tomas Lastovicka Mikhail Starodubtsev Stefan Weber Motoaki Nakatsutsumi Julien Fuchs ELI Beamlines Institute of Physics5.kvetna 83525241 Dolni BrezanyCzech Republic Institute of Applied Physics of the Russian Academy of Sciences(IAP RAS) 46 Ulyanov Street603950 Nizhny NovgorodRussia LULI-CNRS Ecole PolytechniqueCEA:Universite Paris-SaclayUPMC Univ Paris 06:Sorbonne UniversitiesF-91128 Palaiseau CedexFrance Research Center Toptec Institute of Plasma PhysicsSobotecka 166051101 TurnovCzech Republic Joint Institute for High Temperatures Russian Academy of Science(JIHT RAS) Moscow 125412Russia Division of Electrical Electronic and Information EngineeringGraduate School of EngineeringOsaka UniversityOsakaJapan Central Laser Facility STFC Rutherford Appleton LaboratoryDidcot OX110QXUnited Kingdom Department of Physics SUPA University of StrathclydeGlasgow G40NGUnited Kingdom European XFEL GmbH Holzkoppel 422869 SchenefeldGermany

The design of ellipsoidal plasma mirrors(EPMs)for the PEARL laser facility is *** EPMs achieve a magnification of 0.32 in focal spot size,and the corresponding increase in focused intensity is expected to be about *** and implementing such focusing optics for short-pulse(<100 fs)systems paves the way for their use in future high-power facilities,where they can be used to achieve intensities beyond 1023W/cm^(2).A retro-imaging-based target alignment system is also described,which is used to align solid targets at the output of the ellispoidal mirrors(with a numerical aperture of 0.75 in this case).

关键词： beyond mirror extreme