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Ultrarelativistic Fe plasma with GJ/cm^(3) energy density created by femtosecond laser pulses

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Matter and Radiation at Extremes 2024年第6期9卷 70-80页

作者： Mariya Alkhimova Igor Skobelev Tatiana Pikuz Sergey Ryazantsev Hironao Sakaki Alexander S.Pirozhkov Timur Zh.Esirkepov Akito Sagisaka Nicholas P.Dover Kotaro Kondo Koichi Ogura Yuji Fukuda Hiromitsu Kiriyama Keita Nishitani Sergey Pikuz Masaki Kando ryosuke kodama Kiminori Kondo Mamiko Nishiuchi 无 Joint Institute for High Temperatures Russian Academy of SciencesMoscow 125412Russia National Research Nuclear University(MEPhI) Moscow 115409Russia Institute for Open and Transdisciplinary Research Initiatives Osaka University2-6 YamadaokaSuitaOsaka 565-0871Japan HB11 Energy Holdings Pty 11 Wyndora Ave.FreshwaterNew South Wales 2096Australia Kansai Institute for Photon Science(KPSI) National Institutes for Quantum Science and Technology(QST)8-1-7 UmemidaiKizugawaKyoto 619-0215Japan Interdisciplinary Graduate School of Engineering Sciences Kyushu University6-1 KasugakoenKasugaFukuoka 816-8580Japan

The generation of a plasma with an ultrahigh energy density of 1.2 GJ/cm^(3)(which corresponds to about 12 Gbar pressure) is investigated by irradiating thin stainless-steel foils with high-contrast femtosecond laser pulses with relativistic intensities of up to 10^(22) W/cm^(2).The plasma parameters are determined by X-ray *** results show that most of the laser energy is absorbed by the plasma at solid density,indicating that no pre-plasma is generated in the current experimental setup.

关键词： laser femtosecond energy

Direct imaging of shock wave splitting in diamond at Mbar pressure

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Matter and Radiation at Extremes 2023年第6期8卷 90-100页

作者： Sergey Makarov Sergey Dyachkov Tatiana Pikuz Kento Katagiri Hirotaka Nakamura Vasily Zhakhovsky Nail Inogamov Victor Khokhlov Artem Martynenko Bruno Albertazzi Gabriel Rigon Paul Mabey Nicholas JHartley Yuichi Inubushi Kohei Miyanishi Keiichi Sueda Tadashi Togashi Makina Yabashi Toshinori Yabuuchi Takuo Okuchi ryosuke kodama Sergey Pikuz Michel Koenig Norimasa Ozaki Joint Institute for High Temperatures of Russian Academy of Sciences 13/2 Izhorskaya St.125412 MoscowRussia Institute for Open and Transdisciplinary Research Initiative Osaka UniversitySuitaOsaka 565-0871Japan Graduate School of Engineering Osaka UniversitySuitaOsaka 565-0817Japan Institute of Laser Engineering Osaka UniversitySuitaOsaka 565-0871Japan Landau Institute for Theoretical Physics of Russian Academy of Sciences 1-A Akademika Semenova Ave.ChernogolovkaMoscow Region 142432Russia LULI CNRSCEAEcole PolytechniqueUPMCUniversite Paris 06:Sorbonne UniversitesInstitut Polytechnique de ParisF-91128 Palaiseau CedexFrance Graduate School of Science Nagoya UniversityChikusa KuNagoyaAichi 4648602Japan Department of Physics Experimental Biophysics and Space SciencesFreie Universitat BerlinArnimallee 1414195 BerlinGermany SLAC National Accelerator Laboratory 2575 Sand Hill RoadMenlo ParkCalifornia 94025USA Japan Synchrotron Radiation Research Institute SayoHyogo 679-5198Japan RIKEN SPring-8 Center SayoHyogo 679-5148Japan Institute for Integrated Radiation and Nuclear Science Kyoto UniversityYoshida-honmachiSakyo-kuKyoto 606-8501Japan

Understanding the behavior of matter at extreme pressures of the order of a megabar(Mbar)is essential to gain insight into various physical phenomena at macroscales—the formation of planets,young stars,and the cores of super-Earths,and at microscales—damage to ceramic materials and high-pressure plastic transformation and phase transitions in *** dynamic compression of solids up to Mbar pressures,even a solid with high strength exhibits plastic properties,causing the induced shock wave to split in two:an elastic precursor and a plastic shock *** phenomenon is described by theoretical models based on indirect measurements of material *** advent of x-ray free-electron lasers(XFELs)has made it possible to use their ultrashort pulses for direct observations of the propagation of shock waves in solid materials by the method of phase-contrast ***,there is still a lack of comprehensive data for verification of theoretical models of different ***,we present the results of an experiment in which the evolution of the coupled elastic-plastic wave structure in diamond was directly observed and studied with submicrometer spatial resolution,using the unique capabilities of the x-ray free-electron laser(XFEL).The direct measurements allowed,for the first time,the fitting and validation of the 2D failure model for diamond in the range of several *** experimental approach opens new possibilities for the direct verification and construction of equations of state of matter in the ultra-high-stress range,which are relevant to solving a variety of problems in high-energy-density physics.

关键词： shock wave solids

Relationship between gastric mucosal atrophy by endoscopy and non-ampullary duodenal epithelial tumors

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World Journal of Gastrointestinal Oncology 2025年第2期17卷 84-92页

作者： Kazuya Ohno Eiji Nakatani Takafumi Kurokami Asami Kawai ryosuke Itai Masanori Matsuda YuichiMasui Tatsunori Satoh Shinya Ikeda Taiyo Hirata Shodai Takeda Makoto Suzuki Ken Haruma Department of Gastroenterology Shizuoka General HospitalShizuoka 420-8527Japan Research Support Center Graduate School of Public HealthShizuoka Graduate University of Public HealthShizuoka 420-0881Japan Department of Pathology Shizuoka General HospitalShizuoka 420-8527Japan Department of General Internal Medicine 2 Kawasaki Medical SchoolOkayama 700-8505Japan

BACKGROUND The pathogenesis of non-ampullary duodenal epithelial tumors(NADETs)is not fully *** that express gastric-type mucin phenotypes(GNADETs)are noteworthy because of their high *** foveolar metaplasia,from which G-NADETs originate,protects the duodenal mucosa from gastric *** gastric acid secretion is affected by endoscopic gastric mucosal atrophy(EGMA),we hypothesized that EGMA would be associated with *** To evaluate the association between EGMA and the occurrence of *** This cross-sectional retrospective study investigated the relationship between EGMA and NADETs in 134 *** duodenum was divided into parts 1(bulb),2(superior duodenal angle to the papilla),and 3(anal side of the papilla to the horizontal part).The effects of gastric acidity and presence of Brunner’s glands were *** was divided into types C(no or mild atrophy)and O(severe atrophy).Mucin phenotype expressions in NADETs were divided into gastric,intestinal,gastrointestinal,and *** When NADETs were classified according to EGMA,105 were classified as type C and 29 as type O.G-NADETs were present in 11.9%(16 cases)of all cases,and all 16 cases were of type *** G-NADETs,93.8%(15 cases)were present in part 1 or *** was an association between G-NADETs and type C in part 1,and 50.0%(eight of 16 cases)of G-NADETs were associated with a current or previous Helicobacter pylori infection ***,all eight cases occurred in part *** G-NADETs were significantly associated with type *** acidity and Brunner's gland growth may be associated with G-NADETs.

关键词： Gastric acidity Gastric foveolar metaplasia Gastric mucosal atrophy Helicobacter pylori Mucin phenotype Nonampullary duodenal epithelial tumor

Liver transplant practices in the era of normothermic machine perfusion in the United States

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World Journal of Transplantation 2025年第2期15卷 257-264页

作者： Kenji Okumura Abhay Dhand Bima J Hasjim ryosuke Misawa Hiroshi Sogawa Gregory Veillette Seigo Nishida Department of Surgery Westchester Medical CenterValhallaNY 10595United States Department of Surgery University of CaliforniaIrvine Medical CenterOrangeCA 92697United States

BACKGROUND Normothermic liver machine perfusion(NMP)is a novel technology used to preserve and evaluate the function of liver *** To assess NMP utilization in liver transplant(LT)*** All adult deceased-donor LT recipients between January 2021 and September 2023 in the United States were *** including discard rates,survival,preservation time and timing of surgery were compared between two groups:NMP vs *** Between 2021 and 2023,NMP was utilized in 1493(6.3%)of all LTs in the United *** to non-NMP group,NMP group had lower allograft discard rate(6.5%vs 10%,P<0.001),older recipients’age(median:47 vs 42 years,P<0.001),and higher utilization of donors from donation after circulatory death(DCD)(55%vs 11%,P<0.001).NMP group also had longer distances between recipient and donor hospitals(median:156 vs 138 miles,P<0.001),longer preser-vation time(median:12.2 vs 5.8 hours,P<0.001),and more daytime reperfusion(74%vs 55%,P<0.001).Post-transplant survival outcomes were comparable between the two *** a subgroup analysis of NMP,recipients in the long preservation time(≥8 hours)group had higher daytime reperfusion(78%vs 55%,P<0.001)and similar post-transplant survival when compared to the short preservation time(<8 hours)*** The utilization of NMP is associated with lower discard rates and increased DCD organs for *** allows for prolonging the preservation time and increased occurrence of daytime LT,without any impact on the survival outcomes.

关键词： Liver transplant Machine perfusion Daytime Distance

Petawatt and exawatt class lasers worldwide

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High Power Laser Science and Engineering 2019年第3期7卷 168-221页

作者： Colin N.Danson Constantin Haefner Jake Bromage Thomas Butcher Jean-Christophe FChanteloup Enam A.Chowdhury Almantas Galvanauskas Leonida A.Gizzi Joachim Hein David I.Hillier Nicholas W.Hopps Yoshiaki Kato Efim A.Khazanov ryosuke kodama Georg Korn Ruxin Li Yutong Li Jens Limpert Jingui Ma Chang Hee Nam David Neely Dimitrios Papadopoulos Rory R.Penman Liejia Qian Jorge J.Rocca andrey A.Shaykin Craig W.Siders Christopher Spindloe Sándor Szatmári Raoul M.G.M.Trines Jianqiang Zhu Ping Zhu Jonathan D.Zuegel AWE AldermastonReadingUK OxCHEDS Clarendon LaboratoryDepartment of PhysicsUniversity of OxfordOxfordUK CIFS Blackett LaboratoryImperial CollegeLondonUK NIF&Photon Science Directorate Lawrence Livermore National LaboratoryLivermoreUSA Fraunhofer Institute for Laser Technology(ILT) AachenGermany Chair for Laser Technology LLT RWTH Aachen UniversityAachenGermany University of Rochester Laboratory for Laser EnergeticsRochesterUSA Central Laser Facility STFC Rutherford Appleton LaboratoryChiltonDidcotUK LULI CNRSCEASorbonne UniversitesEcole PolytechniqueInstitut Polytechnique de ParisPalaiseauFrance Department of Physics The Ohio State UniversityColumbusUSA Centre for Ultrafast Optical Science University of MichiganAnn ArborUSA Intense Laser Irradiation Laboratory Istituto Nazionale di Ottica(INO)CNRPisaItaly Institute of Optics and Quantum Electronics Friedrich-Schiller-University Jena and Helmholtz InstituteJenaGermany The Graduate School for the Creation of New Photonics Industries NishikuHamamatsuJapan Institute of Applied Physics Russian Academy of SciencesNizhny NovgorodRussia Institute of Laser Engineering Osaka UniversitySuitaOsakaJapan ELI-Beamlines Institute of PhysicsCzech Academy of SciencesPragueCzech Republic State Key Laboratory of High Field Laser Physics Shanghai Institute of Optics and Fine MechanicsChinese Academy of SciencesShanghai 201800China National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China Institute for Applied Physics(IAP)at Friedrich-Schiller-University Jena JenaGermany Helmholtz Institute Jena JenaGermany Fraunhofer Institute for Applied Optics and Precision Engineering(IOF) JenaGermany Key Laboratory for Laser Plasma(Ministry of Education) School of Physics and AstronomyShanghai Jiao Tong UniversityShanghai 200240China Centre for Relativistic Laser Science(CoReLS) Institute for Basic ScienceDepartment of Physics and Photon ScienceGwangju Institute of Science and Techno

In the 2015 review paper‘Petawatt Class Lasers Worldwide’a comprehensive overview of the current status of highpower facilities of>200 TW was *** was largely based on facility specifications,with some description of their uses,for instance in fundamental ultra-high-intensity interactions,secondary source generation,and inertial confinement fusion(ICF).With the 2018 Nobel Prize in Physics being awarded to Professors Donna Strickland and Gerard Mourou for the development of the technique of chirped pulse amplification(CPA),which made these lasers possible,we celebrate by providing a comprehensive update of the current status of ultra-high-power lasers and demonstrate how the technology has *** are now in the era of multi-petawatt facilities coming online,with 100 PW lasers being proposed and even under *** addition to this there is a pull towards development of industrial and multi-disciplinary applications,which demands much higher repetition rates,delivering high-average powers with higher efficiencies and the use of alternative wavelengths:mid-IR *** apart from a comprehensive update of the current global status,we want to look at what technologies are to be deployed to get to these new regimes,and some of the critical issues facing their development.

关键词： exawatt lasers high-power lasers petawatt lasers ultra-high intensity

Effects of Acetic Acid Bacteria (Gluconacetobacter hansenii GK-1) on Fatigue Induced by Temporary Mental Stress: A Randomized, Double-Blind, Placebo-Controlled Study

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Food and Nutrition Sciences 2025年第1期16卷 44-54页

作者： Wei Wang Mariko Oe Mengwei Yuan Keiko Kuriyama Yumi Takeda Mamoru Kimura ryosuke Matsuoka Kiichi Sugiyama Naoki Miura R&D Division Kewpie Corporation Tokyo Japan Faculty of Education Hokkaido University of Education Sapporo Japan Miura Medical Clinic Osaka Japan

Objective: This study assessed the effects of consuming acetic acid bacteria (Gluconacetobacter hansenii GK-1) for 12 weeks on fatigue induced by temporary mental stress. Methods: This randomized, double-blind, placebo-controlled, parallel-group study included 100 healthy male and female adults aged 20 - 64 years. Participants consumed either the G. hansenii GK-1 supplement (9 × 10⁹ cells/day) or a placebo daily for 12 weeks. The impact of temporary mental stress on fatigue in G. hansenii GK-1 was assessed using a Visual Analog Scale (VAS) before the study began and after 12 weeks of supplementation. Results: Subjective fatigue measured by Visual Analog Scale (VAS) showed a significant decrease in fatigue induced by temporary mental stress after 12 weeks of consumption in the G. hansenii GK-1 group compared with the placebo group. No adverse events were attributed to G. hansenii GK-1. These findings confirm that continuous oral ingestion of G. hansenii GK-1 by healthy Japanese adults reduces feelings of fatigue caused by temporary mental stress.

关键词： Acetic Acid Bacteria Gluconacetobacter hansenii GK-1 Fatigue Temporary Mental Stress Double-Blind Study

Crowd evacuation of pairs of pedestrians

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Communications in Theoretical Physics 2022年第4期74卷 97-112页

作者： ryosuke Yano Tokio Marine d R Co.ltd. 1-5-1OtemachiChiyoda-kuTokyo100-0004Japan

The crowd evacuation of pairs of pedestrians(*** consisting of a parent and a child)is numerically ***,it is assumed that all pedestrians have their own partners,and move randomly inside the bounded domain of the right-hand room as an initial *** pedestrians start their evacuations after they contact their *** evacuations are completed by the transfer of all the pairs from the right-hand room to the left-hand room through an exit.A frozen swarm tends to appear in the right-hand room as the total number of pedestrians *** frozen swarm moves without changing its form,unless it is dissolved by a strong collision with a pair of pedestrians that comes back from the left-hand room by ***,the evacuation speed also depends on the area of the Escape Zone,whereas an obstacle placed in front of an exit also changes the speed of the evacuation in accordance with the type of motion of the children.

关键词： Evacuation of paired pedestrians force chain network escape from crowd

An integrated model to simulate sown area changes for major crops at a global scale

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Science China Earth Sciences 2008年第3期51卷 370-379页

作者： SHIBASAKI ryosuke Center for Spatial Information Science University of Tokyo

Dynamics of land use systems have attracted much attention from scientists around the world due to their ecological and socio-economic implications. An integrated model to dynamically simulate future changes in sown areas of four major crops (rice, maize, wheat and soybean) on a global scale is pre- sented. To do so, a crop choice model was developed on the basis of Multinomial Logit (Logit) model to model land users' decisions on crop choices among a set of available alternatives with using a crop utility function. A GIS-based Environmental Policy Integrated Climate (EPIC) model was adopted to simulate the crop yields under a given geophysical environment and farming management conditions, while the International Food Policy and Agricultural Simulation (IFPSIM) model was utilized to estimate crop price in the international market. The crop choice model was linked with the GIS-based EPIC model and the IFPSIM model through data exchange. This integrated model was then validated against the FAO statistical data in 2001-2003 and the Moderate Resolution Imaging Spectroradiometer (MODIS) global land cover product in 2001. Both validation approaches indicated reliability of the model for ad- dressing the dynamics in agricultural land use and its capability for long-term scenario analysis. Finally, the model application was designed to run over a time period of 30 a, taking the year 2000 as baseline. The model outcomes can help understand and explain the causes, locations and consequences of land use changes, and provide support for land use planning and policy making.

关键词： land use change crop sown area simulation crop choice global scale

Machine learning-aided first-principles calculations of redox potentials

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npj Computational Materials 2024年第1期10卷 2143-2153页

作者： ryosuke Jinnouchi Ferenc Karsai Georg Kresse Toyota Central R&D Labs. Inc.Nagakute 480-1192 AichiJapan VASP Software GmbH Berggasse 21A-1090 ViennaAustria Computational Materials Physics Faculty of PhysicsUniversity of ViennaKolingasse 14A-1090 ViennaAustria

Wepresent a method combining first-principles calculations and machine learning to predict the redox potentials of half-cell reactions on the absolute *** applying machine learning force fields for thermodynamic integration from the oxidized to the reduced state,we achieve efficient statistical sampling over a broad phase ***,through thermodynamic integration from machine learning force fields to potentials of semi-local functionals,and from semi-local functionals to hybrid functionals usingΔ-machine learning,we refine the free energy with high precision step-by-step.

关键词： space. redox principles