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Analysis of the anelastic deformation of high-entropy Pd_(20)Pt_(20)Cu_(20)Ni_(20)P_(20) metallic glass under stress relaxation and recovery

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Journal of Materials Science & Technology 2022年第12期107卷 82-91页

作者： Y.J.Duan L.T.Zhang T.wada H.Kato E.Pineda D.Crespo J.M.Pelletier J.C.Qiao School of Mechanics Civil Engineering and ArchitectureNorthwestern Polytechnical UniversityXi’an 710072China Department of Physics Institute of Energy TechnologiesUniversitat Politècnica de CatalunyaBarcelona 08019Spain Institute for Materials Research Tohoku UniversitySendai 980-8577Japan Universitéde Lyon MATEISUMR CNRS5510Bat.B.PascalINSA-LyonF-69621 Villeurbanne CedexFrance

The anelastic deformation behavior of Pd_(20)Pt_(20)Cu_(20)Ni_(20)P_(20) high-entropy metallic glass was probed by monitoring the stress relaxation and recovery processes. The stress relaxation under consecutive strain steps can be described by the Kohlrausch-Williams-Watts(KWW) function. In addition, considering a hierarchy of relaxation processes related to the structural heterogeneity, a constitutive model is proposed in order to describe the whole process of stress relaxation and determine the contribution of different time scales. Moreover, a crossover from stochastic activation to percolation of flow defects with the ultimate strain can be observed during stress relaxation process. The anelastic recovery process after a strain step is studied as a function of the initial strain level and characterized by means of a direct spectrum analysis. The peaks in the recovery time-spectra revealed the evolution of flow defects in Pd_(20)Pt_(20)Cu_(20)Ni_(20)P_(20) high-entropy metallic glass. The understanding of the atomic free-volume zones effect and the anelastic deformation provides important insight into how atomic structural features affect the deformation behavior of high-entropy metallic glasses, and may provide a new avenue into the improvement of their mechanical properties.

关键词： High-entropy metallic glass Stress relaxation Anelastic deformation Flow defects Free-volume zones

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Inverted Meckel's diverticulum preoperatively diagnosed using double-balloon enteroscopy

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World Journal of Gastroenterology 2016年第17期22卷 4416-4420页

作者： Kosuke Takagaki Satoshi Osawa Tatsuhiro Ito Moriya Iwaizumi Yasushi Hamaya Hiroe Tsukui Takahisa Furuta Hidetoshi wada Satoshi Baba Ken Sugimoto First Department of Medicine Hamamatsu University School of Medicine Department of Endoscopic and Photodynamic Medicine Hamamatsu University School of Medicine Department of Diagnostic Pathology Hamamatsu University School of Medicine Center for Clinical Research Hamamatsu University School of Medicine First Department of Surgery Hamamatsu University School of Medicine

An inverted Meckel’s diverticulum is a rare gastrointestinal congenital anomaly that is difficult to diagnose prior to surgery and presents with anemia, abdominal pain, or intussusception. Here, we report the case of 57-year-old men with an inverted Meckel’s diverticulum, who was preoperatively diagnosed using double-balloon enteroscopy. He had repeatedly experienced epigastric pain for 2 mo. Ultrasonography and computed tomography showed intestinal wall thickening in the pelvis. Double-balloon enteroscopy via the anal route was performed for further examination, which demonstrated an approximately 8-cm, sausage-shaped, submucosal tumor located approximately 80 cm proximal to the ileocecal valve. A small depressed erosion was observed at the tip of this lesion. Forceps biopsy revealed heterotopic gastric mucosa. Thus, the patient was diagnosed with an inverted Meckel’s diverticulum, and single-incision laparoscopic surgery was performed. This case suggests that an inverted Meckel’s diverticulum should be considered as a differential diagnosis for a submucosal tumor in the ileum. Balloon-assisted enteroscopy with forceps biopsy facilitate a precise diagnosis of this condition.

关键词： Inverted Meckel’ s diverticulum Double-balloon enteroscopy Small bowel tumor Epigastric pain Heterotopic gastric mucosa

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Synthesis of (4R)-α-Terpineol

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Chinese Chemical Letters 1997年第1期8卷 19-20页

作者： Wen PEI（Department of Chemistry, Yanbian University, Yanji,133002）Eiji wada and ShuJi Kanemasa(Institute of Advanced Material Study, Kyushu University, Kasugakoen, Kasuga 816,Japan.) YANBIAN UNIV DEPT CHEMYANJI 133002PEOPLES R CHINA KYUSHU UNIV INST ADV MAT STUDYKASUGAFUKUOKA 816JAPAN

(4R) - a-Terpineol, a natural product, was synthesized enantioselectively byan asymmetrical catalised Diels - Alder reaction from - 1 - phenylsulfonyl - 3 - buten - 2 -one with 2 - methyl - 1,3 - butadiene.

关键词： Synthesis of Terpineol

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Dynamic mechanical relaxation behavior of Zr_(35)Hf_(17.5)Ti_(5.5)Al_(12.5)Co_(7.5)Ni_(12)Cu_(10)high entropy bulk metallic glass

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Journal of Materials Science & Technology 2021年第24期83卷 248-255页

作者： L.T.Zhang Y.J.Duan T.wada H.Kato J.M.Pelletier D.Crespo E.Pineda J.C.Qiao School of Mechanics Civil Engineering and ArchitectureNorthwestern Polytechnical UniversityXi’an710072China Institute for Materials Research Tohoku UniversitySendai980-8577Japan Universitéde Lyon MATEISUMR CNRS5510Bat.B.PascalINSA-LyonF-69621Villeurbanne CedexFrance Department of Physics Barcelona Research Center in Multiscale Science and TechnologyInstitute of Energy TechnologiesUniversitat Politècnica de Catalunya08019BarcelonaSpain

Non-equiatomic high entropy bulk metallic glasses were reported recently and show unique mechanical and physical *** mechanical relaxation behavior of Zr_(35)Hf_(17.5)Ti_(5.5)Al_(12.5)Co_(7.5)Ni_(12)Cu_(10)high entropy bulk metallic glass was investigated by dynamic mechanical analysis(DMA)and the mechanical spectra could be well described by the quasi-point defects(QPD)*** to typical metallic glasses,the intensity of theβrelaxation of Zr_(35)Hf_(17.5)Ti_(5.5)Al_(12.5)Co_(7.5)Ni_(12)Cu_(10)high entropy bulk metallic glass is lower due to the sluggish *** the same time,the correlation factor is higher than that of conventional metallic glasses and this is ascribed to the high configuration *** parallel,physical aging below the glass transition temperature leads to a decrease of atomic mobility,caused by a decrease of the concentration of defects.

关键词： High entropy bulk metallic glass Mechanical relaxation Quasi-point defects Physical aging

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一种用于GPS定位估计滤波算法的非线性模型

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上海交通大学学报 2004年第4期38卷 610-615页

作者：茅旭初 wada Massaki 桥本秀纪东京大学生产技术研究所

提出了一种将现代非线性滤波技术用于GPS定位估计的方法,该方法可用于低价位的单机GPS接收器的定位,提高它们的定位精度和鲁棒性.应用该方法,根据单机GPS的原始数据、伪距和多普勒频移进行定位估计,开发了一种新的基于非线性滤波的位置... 详细信息

提出了一种将现代非线性滤波技术用于GPS定位估计的方法,该方法可用于低价位的单机GPS接收器的定位,提高它们的定位精度和鲁棒性.应用该方法,根据单机GPS的原始数据、伪距和多普勒频移进行定位估计,开发了一种新的基于非线性滤波的位置和速度估计模型,该非线性模型具有随观察到的卫星数量而改变状态和测量元个数的动态特性.运用一种新型的非线性滤波-平淡卡尔曼滤波求解该模型.GPS定位实验结果表明,与通用的最小二乘迭代法或直接从接受机获得的结果相比,所提出的非线性模型得出的滤波估计结果具有较高的精度和鲁棒性.

关键词：全球定位系统扩展卡尔曼滤波平淡卡尔曼滤波

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Studies of Three-body Interaction with Heavy Ion Collisions in the Medium Energy Region

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IMP & HIRFL Annual Report 2017年第1期 45-46页

作者： Hu Qiang Wang Jiansong wada Ryoichi CAS Key Laboratory of High Precision Nuclear Spectroscopy and Center for Nuclear Matter Science Institute of Modern PhysicsChinese Academy of SciencesLanzhou 730000China Cyclotron Institute Texas A&M UniversityCollege StationTexas 77843USA

Studies of three-body forces is one of the frontier research topics in astrophysics as well as in nuclear ***,it is too difficult to observe it directly in *** order to study it,we can only measure some physical observables which are sensitive to three-body *** to theory studies[1],we propose to study three-body interaction by measuring ^(40)Ar+^(51)V collisions in the medium energy region at the CSR External Target Facility(ETF)in Lanzhou.

关键词： frontier Collisions observable

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Diabetic lipemia associated with acute pancreatitis in a patient with type 2 diabetes

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Journal of Diabetes Mellitus 2011年第3期1卷 54-56页

作者： Daisuke Ogawa Jun wada Hirofumi Makino Department of Medicine and Clinical Science Okayama University Graduate School of Medicine Dentistry and Pharmaceutical Sciences Department of Diabetic Nephropathy Okayama University Graduate School of Medicine Dentistry and Pharmaceutical Sciences

We report a 59-year-old man with diabetic lipemia associated with acute pancreatitis. The patient was being treated for type 2 diabetes, but his glycemic control was poor. Although his insulin secretory activity was preserved, acute pancreatitis developed because of hypertriglyceridemia and the patient had type V hyperlipidemia. After hospitalization, his hyperlipidemia and hyperglycemia improved in response to insulin infusion and hydration. It is well known that diabetic lipemia is caused by type 1 diabetes, but is rare in type 2 diabetes. Insulin resistance, as well as insulin deficiency, might play a role in the development of diabetic lipemia.

关键词： Diabetic Lipemia Type 2 Diabetes Acute Pancreatitis

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尼日利亚卡诺市高中生对物理学课程掌握情况的性别差异评估

尼日利亚卡诺市高中生对物理学课程掌握情况的性别差异评估

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作者： Suleiman Bashir wada 华东师范大学

学位级别：硕士

本研究的主要目的是评估尼日利亚卡诺市高中生对物理学课程掌握情况的性别差异。本研究随机抽取了该市8所提供物理课程的混合中学,从随机抽取的341名学生中,分别随机抽取了170名女生和171名男生。本研究使用的问卷工具改编自Ololobou（2... 详细信息

本研究的主要目的是评估尼日利亚卡诺市高中生对物理学课程掌握情况的性别差异。本研究随机抽取了该市8所提供物理课程的混合中学,从随机抽取的341名学生中,分别随机抽取了170名女生和171名男生。本研究使用的问卷工具改编自Ololobou（2010）“物理学教育目标和领域”（Educational Goals and Domains of Physics）一文,其中提出了物理学教育领域的相关问题,包括知识、态度、价值观和技能。在此基础上,本研究提出了四个研究问题和四个研究假设,通过使用SPSS21.0版本收集和分析数据回答研究问题,通过独立样本t检验验证研究假设。研究结果表明,男女高中生在掌握物理学的知识、态度和价值观方面都没有明显差异,但是,在掌握物理学的技能方面,男女高中生之间存在显著差异,女生比男生表现更好。作者建议应该在各级教育中减少性别差异现象。政府、家长、教师及其他教育利益相关者应该共同合作采取措施,如向发达国家借鉴学习,组织研讨会、公开讲座、会议和讨论会等。教育政策制定者应该雇用专业的物理教师,并且应该教导学生取得优秀学习成绩的重要性。

关键词：性别差异学生学习成绩物理教育课程设计

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Tool Wear of Diamond-like Carbon-coated High-speed Steel with a Cr-based interlayer in Cutting of Aluminum Alloys

Tool Wear of Diamond-like Carbon-coated High-speed Steel wit...

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2012 International Conference on Mechanical Engineering and Materials(ICMEM 2012)

作者： Tadahiro wada Koji Iwamoto Hiroaki Sugita Mechanical Engineering Nara National College of Technology OSG Corporation

In cutting aluminum alloy 6061,continuous chips have a negative influence on the machining ***,Pb is added in order to break continuous ***,from the standpoint of environmental protection,it is necessary to improve chip breakability without adding *** effective measure to improve chip breakability is by adding Si to aluminum alloy ***,the influence of Si content on tool wear has not been fully *** this study,in order to clarify the influence of a diamond-like carbon（DLC） coating layer with a Cr-based interlayer,namely（Al,Cr）N,on cutting performance,aluminum alloys having different Si contents were *** substrate of the tool material was high-speed steel（1.4%C）.The tool wear and the surface roughness were experimentally *** following results were obtained:（1） In cutting two kinds of Al-Si alloys,namely the Al-2%Si alloy and Al-4%Si alloy,the progress of wear of the DLC/（Al,Cr）N-coated tool was slower than that of the DLC-coated ***,the（Al,Cr）N interlayer was effective for decreasing the tool wear of the DLC-coated tool.（2） The wear progress of the two kinds of DLC-coated tools in cutting of Al-4%Si alloy was faster than that in cutting of Al-2%Si alloy.（3） In cutting of Al-2%Si alloy with the（Al,Cr）N/DLC-coated tool,the surface roughness was almost constant in the range of a cutting distance from 0.1 km to 9.5 km.

关键词： Cutting Cutting performance Diamond-like carbon(DLC) Cr-based coating film High-speed steel Aluminum alloy

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Advances in Digital Front-End and Software RF Processing:Part I

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ZTE Communications 2011年第3期9卷 1-2页

作者： Mikko Valkama Serioja Ovidiu TatuTomohisa wada

One of the biggest technology trends in wireless broadband, radar, sonar, and broadcasting systems is software radio frequency processing and digital front-end. This trend encompasses a broad range of topics, from circuit design and signal processing to system integration. It includes digital up-conversion （DUC） and down-conversion （DDC）, digital predistortion （DPD）,

关键词： RF Advances in Digital Front-End and Software RF Processing SDR

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