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Oxidation behavior and improvement in nonflammability of LPSO-type Mg–Zn–Y–Sr alloy

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Journal of Magnesium and Alloys 2024年第2期12卷 742-749页

作者： Shin-ichi inoue Kazumasa Iwanaga Yoshihito Kawamura Magnesium Research Center Kumamoto University2-39-1 KurokamiChuo-kuKumamoto 860-8555Japan Department of Materials Science Graduate School of Science and TechnologyKumamoto University2-39-1 KurokamiChuo-kuKumamoto 860-8555Japan

Mg_(97)Zn_(1)Y_(2)alloys with high ignition temperatures were developed by adding *** addition of Sr resulted in the formation of a uniform and thin Y_(2)O_(3)***–Zn–Y alloys containing at least 0.25 at.%Sr exhibited ignition temperatures of 1270–1320 *** a result of EDS measurement,Sr was found to be concentrated in the Y_(2)O_(3)*** addition,a mixed film of MgO and Sr O formed on the outer layer in the 1.5 at.%Sr-containing Mg_(97)Zn_(1)Y_(2)*** findings suggest that the uniform and thin Y_(2)O_(3)film that maintains high soundness at high temperatures was formed owing to valence control and the formation of a protective outer oxide film.

关键词： Magnesium alloy Yttrium Strontium High-temperature oxidation Nonflammability

Does There Exist the Applicability Limit of PDE to Describe Physical Phenomena?—A Personal Survey of Quantization, QED, Turbulence

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World Journal of Mechanics 2024年第6期14卷 97-142页

作者： Atsushi inoue Department of Mathematics Tokyo Institute of Technology Tokyo Japan

What does it mean to study PDE (Partial Differential Equation)? How and what to do “to claim proudly that I’m studying a certain PDE”? Newton mechanic uses mainly ODE (Ordinary Differential Equation) and describes nicely movements of Sun, Moon and Earth etc. Now, so-called quantum phenomenum is described by, say Schrödinger equation, PDE which explains both wave and particle characters after quantization of ODE. The coupled Maxwell-Dirac equation is also “quantized” and QED (Quantum Electro-Dynamics) theory is invented by physicists. Though it is said this QED gives very good coincidence between theoretical1 and experimental observed quantities, but what is the equation corresponding to QED? Or, is it possible to describe QED by “equation” in naive sense?

关键词： Superspace Grassmann Variables Hamilton-Jacobi Equation Quantization

In-situ study of the microstructure evolution during tension of a Mg-Y-Zn-Al alloy processed by rapidly solidified ribbon consolidation technique

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Journal of Magnesium and Alloys 2024年第5期12卷 2024-2040页

作者： Jeno Gubicza Kristián Máthis Péter Nagy Péter Jenei Zoltán Hegedus Andrea Farkas Jozef Vesely Shin-ichi inoue Daria Drozdenko Yoshihito Kawamura Department of Materials Physics Faculty of ScienceEotvos Loránd UniversityPázmány P.sétány 1/ABudapest H-1117Hungary Department of Physics of Materials Faculty of Mathematics and PhysicsCharles UniversityKe Karlovu 512116 Praha 2Czech Republic Deutsches Elektronen-Synchrotron DESY Notkestr.85Hamburg 22603Germany Magnesium Research Center Kumamoto University2-39-1 KurokamiChuo-kuKumamoto 860-8555Japan

Mg-Y-Zn-Al alloys processed by rapidly solidified ribbon consolidation(RSRC)technique exhibit an exceptional mechanical performance indicating promising application *** material has a bimodal microstructure consisting of fine recrystallized and coarse non-recrystallized grains with solute-rich stacking faults forming cluster arranged layers(CALs)and nanoplates(CANaPs),or complete long period stacking ordered(LPSO)*** order to reveal the deformation mechanisms,in-situ synchrotron X-ray diffraction line profile analysis was employed for a detailed study of the dislocation arrangement created during tension in Mg-0.9%Zn-2.05%Y-0.15%Al(at%)*** uncovering the effect of the initial microstructure on the mechanical performance,additional samples were obtained by annealing of the as-consolidated specimen at 300 and 400℃ for 2 *** heat treatment at 300℃ had no significant effect on the initial microstructure,its evolution during tension and,thus,the overall deformation behavior under tensile *** the other hand,annealing at 400℃ resulted in a significant increase of the recrystallized grains fraction and a decrease of the dislocation density,leading to only minor degradation of the mechanical *** maximum dislocation density at the failure of the samples corresponding to the plastic strain of 10-25% was estimated to be about 16-20×10^(14)m^(-2).The diffraction profile analysis indicated that most dislocations formed during tension were of non-basal and pyramidal types,what was also in agreement with the Schmid factor values revealed independently from orientation *** was also shown that the dislocation-induced Taylor hardening was much lower below the plastic strain of 3% than above this value,which was explained by a model of the interaction between prismatic dislocations and CANaPs/LPSO plates.

关键词： Mg-Zn-Y-Al alloy Long period stacking ordered(LPSO)phase Cluster arranged nanoplates(CANaPs) Annealing Tension Dislocation density Hardening

Stage at diagnosis of colorectal cancer through diagnostic route:Who should be screened?

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World Journal of Gastroenterology 2024年第10期30卷 1368-1376页

作者： Nobukazu Agatsuma Takahiro Utsumi Yoshitaka Nishikawa Takahiro Horimatsu Takeshi Seta Yukitaka Yamashita Yukari Tanaka Takahiro inoue Yuki Nakanishi Takahiro Shimizu Mikako Ohno Akane Fukushima Takeo Nakayama Hiroshi Seno Department of Gastroenterology and Hepatology Kyoto University Graduate School of MedicineKyoto 606-8507Japan Department of Gastroenterology and Hepatology Japanese Red Cross Wakayama Medical CenterWakayama 640-8558Japan Department of Health Informatics Kyoto University School of Public HealthKyoto 606-8501Japan Institute for Advancement of Clinical and Translational Science(iACT) Kyoto University HospitalKyoto 606-8507Japan Medical Support Section Medical Affairs DivisionKyoto University HospitalKyoto 606-8507Japan

BACKGROUND Colorectal cancer(CRC)is a global health concern,with advanced-stage diagnoses contributing to poor *** efficacy of CRC screening has been well-established;nevertheless,a significant proportion of patients remain unscreened,with>70%of cases diagnosed outside *** identifying specific subgroups for whom CRC screening should be particularly recommended is crucial owing to limited resources,the association between the diagnostic routes and identification of these subgroups has been less *** the Japanese cancer registry,the diagnostic routes for groups discovered outside of screening are primarily categorized into those with comorbidities found during hospital visits and those with CRC-related *** To clarify the stage at CRC diagnosis based on diagnostic *** We conducted a retrospective observational study using a cancer registry of patients with CRC between January 2016 and December 2019 at two *** diagnostic routes were primarily classified into three groups:Cancer screening,follow-up,and *** early-stage was defined as Stages 0 or *** and univariate logistic regressions were exploited to determine the odds of early-stage diagnosis in the symptomatic and cancer screening groups,referencing the follow-up *** adjusted covariates were age,sex,and tumor *** Of the 2083 patients,715(34.4%),1064(51.1%),and 304(14.6%)belonged to the follow-up,symptomatic,and cancer screening groups,*** the 2083 patients,CRCs diagnosed at an early stage were 57.3%(410 of 715),23.9%(254 of 1064),and 59.5%(181 of 304)in the follow-up,symptomatic,and cancer screening groups,*** symptomatic group exhibited a lower likelihood of early-stage diagnosis than the follow-up group[P<0.001,adjusted odds ratio(aOR),0.23;95%confidence interval(95%CI):0.19-0.29].The likelihood of diagnosis at an early stage was similar between the follow-up and cancer screening gro

关键词： Colorectal neoplasms Cancer registry Diagnostic route Cancer screening Stage at diagnosis

SPERA Hydrogen System^(TM)by LOHC-MCH Method for Massive Hydrogen Storage and Transportation

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Journal of Environmental Science and Engineering(A) 2024年第2期13卷 50-60页

作者： Yoshimi Okada Kaji Naohiro Osamu Ikeda Kenichi Imagawa Hironori Kawai Masashi Nagai Yasuhiro inoue Frontier Business Division Chiyoda Corporation4-6-2 Minatomirai Nishi-kuYokohama 2208765Japan Hydrogen Business Department Chiyoda Corporation4-6-2 Minatomirai Nishi-kuYokohama 2208765Japan R&D Center Chiyoda Corporation3-13 Moriya-cho Kanagawa-kuYokohama 2208765Japan Technology Development Department Chiyoda Corporation4-6-2 Minatomirai Nishi-kuYokohama 2208765Japan

Expanding the hydrogen energy utilization is essential for decarbonization,and the commercialization of hydrogen energy carrier systems that can“store”and“transport”hydrogen in a large scale is *** organic chemical hydride method incorporates hydrogen atoms into the molecular structure of a LOHC(Liquid Organic Hydrogen Carrier)to store and transport hydrogen in a liquid state under normal temperature and pressure,and is a highly safe method with low business *** has been developing the technology since 2002,completed a pilot demonstration in 2014 and named it the SPERA Hydrogen^(TM) System,and successfully completed an international supply chain demonstration that transports hydrogen from Brunei to Japan in a large scale in 2020,moving to the commercialization ***,Chiyoda is conducting feasibility studies with a number of domestic and foreign companies with the aim of commercializing the system as soon as *** this paper,outline,features,development status and our efforts in commercialization of SPERA HydrogenTM System are introduced.

关键词： Hydrogen carrier LOHC Methylcyclohexane MCH toluene

Stress Dependence of Transformation Plastic Behavior

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材料热处理学报 2004年第5期25卷 208-213页

作者： Tatsuo inoue Fukuyama University Fukuyama/Himshima Japan

Transformation plasticity is known to play an important role in the course of heat treatment processes, and so affect the results of heat treatment simulations, which means that the transformation plasticity coefficient is necessary to be identifies. The authors developed a new method by use of four-point bending system of a beam to identify transformation plasticity coefficient taking advantage of its easiness and high accuracy compared with other conventional methods like tension test, etc., and identified the coefficient for four kinds of steels; plane carbon steel, Cr-steel, Cr-Mo steel and bearing steel. In this paper, further experimental data are presented for the steels if the coefficient Kp during pearlite transformation depend on the applied stress. Obtained results reveals that the stress dependence of Kp is rather trivial except for uncertain tendency detected in plane carbon steel. The relation between the Kp and carbon content included is discussed in comparison with other data referred from references.

关键词：相变塑性四点弯曲试验应力关系金属热机械性能

Synthesis,structure and mechanical properties of Zr-Cu-based bulk metallic glass composites

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International Journal of Minerals,Metallurgy and Materials 2010年第2期17卷 208-213页

作者： Akihisa inoue Institute for Materials Research Tohoku University

The unusual glass-forming ability（GFA） of the Zr48Cu36Ag8Al8 alloy and the high ductility of the Zr48Cu36Ag8Al8 metallic glass-matrix composites containing Ta powder were *** bulk metallic glass rod with a diameter of 25 mm was successfully synthesized using copper mold casting for the Zr48Cu36Ag8Al8 *** GFA of this alloy was found to be related to a large supercooled liquid region and a quaternary eutectic point with low melting *** bulk metallic glass matrix composites were prepared by introducing extra Ta particles into the Zr48Cu36Ag8Al8 *** composites consist of Ta particles homogenously distributed in the Zr48Cu36Ag8Al8 metallic glass *** optimum content of Ta powder is 10at%for the composite with the highest plasticity,which shows a plastic strain of 31%.

关键词： bulk metallic glass composites glass forming ability Zr-Cu-based alloy plastic strain

Potential significance of CX3CR1 dynamics in stress resilience against neuronal disorders

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Neural Regeneration Research 2022年第10期17卷 2153-2156页

作者： Koichi inoue Department of Integrative Anatomy Nagoya City University Graduate School of Medical SciencesNagoyaJapan

Recent findings have implicated inflammatory responses in the central nervous system in a variety of neuropsychiatric and neurodegenerative diseases,and the understanding and control of immunological responses could be a major factor of future therapeutic strategies for neurological ***,derived from myelogenous cells,respond to a number of stimuli and make immune responses,resulting in a prominent role as cells that act on inflammation in the central nervous ***(FKN or CX3CL1)signaling is an important factor that influences the inflammatory response of *** receptor for FKN,CX3CR1,is usually expressed in microglia in the brain,and therefore the inflammatory response of microglia is modified by ***,FKN often suppresses inflammatory responses in microglia and activation of its receptor may be effective in the treatment of inflammatory neurological ***,it has also been suggested that inflammatory responses facilitated by FKN signaling aggravate neurological ***,further studies are still required to resolve the conflicting interpretation of the protective or deleterious contribution of microglial FKN *** notably,regulation of FKN signaling has recently been shown to be beneficial in the treatment of human diseases,although not neurological *** addition,a CX3CR1 inhibitor has been developed and successfully tested in animal models,and it is expected to be in human clinical trials in the *** this review,I describe the potential therapeutic consideration of microglial CX3CR1 dynamics through altered FKN signaling.

关键词： Alzheimer’s disease CX3CR1 fractalkine inflammation knockout mice microglia resilience SARS-CoV-2 stress stroke

Culm form analysis for bamboo, Phyllostachys pubescens

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Journal of Forestry Research 2013年第3期24卷 525-530页

作者： Akio inoue Laboratory of Forest Ecology Faculty of Environmental and Symbiotic Sciences Prefectural University of KumamotoKumamoto 862-8502 Japan

We investigated the culm form for one of the largest bamboo species, Phyllostachys pubescens Mazel ex Houz. in relation to the me- chanical constraint principles, i.e., elastic, stress and geometric similarity. The fine-resolution analysis of the culm taper indicated that the culm for P. pubescens consisted of three or four segments with various forms, except for the butt swell. This implied that the taper of the whole culm for P. pubescens could be expressed by neither of these principles. The regression slope between culm height and diameter at breast height on the double logarithmic coordinates was 0.629, which was significantly different from the values predicted from these principles. In conclusion, none of these mechanical constraint principles can express the culm taper and height-diameter relationship, and there may be a need for a more complicated model to express the culm form for P. pubescens.

关键词： culm taper fine-resolution analysis height-diameter rela-tionship mechanical constraint principle Phyllostachys pubescens