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Insight into relationship between composition,thickness and electrochemistry behavior of oxide film formed on TA15under different potentials in 0.5 mol·L^(-1)H_(2)SO_(4)

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Rare Metals 2023年第5期42卷 1760-1772页

作者： Fei-Fei Huang Yi Qin Qing-Rui Wang hiroaki Yoshida Lei Wen Hai Chang Ying Jin National Center for Materials Service Safety University of Science and Technology BeijingBeijing100083China Innovation Group of Marine Engineering Materials and Corrosion Control Southern Marine Science and Engineering Guangdong LaboratoryZhuhai519080China Department of Physical Science Hiroshima UniversityHigashi-Hiroshima739-8526Japan

The oxide film formed on TA15 alloy in0.5 mol·L^(-1)H_(2)SO_(4)at different applied potentials is investigated by evaluating the film formation current density,film thickness,surface film composition,valence state,and the electrochemical *** relative quantitative spectral analysis revealed by X-ray photoelectron spectroscopy(XPS)and X-ray absorption spectra(XAS)shows that the increasing applied potential promotes the formation of thick and high-valence state *** contrasting with XAS of the reference titanium oxides,it is found that TiO_(2)within the oxide film changes from anatase type to rutile type with the potential increases to 2.00 *** oxide film formed at passive region has better protection performance,and with the increase of applied potential,the corrosion resistance of passive film increases,whereas the ND(donor density)values obtained from the Mott-Schottky(MS)results decrease with the increasing applied potential,indicating a better uniformity and protective effect of the oxide *** on above facts,the model of the oxide films formed on TA15 at different applied potentials in passive region and dissolve region is ***,the existence forms of all the TA15alloying elements under the most corrosion resistant condition are confirmed.

关键词： TA15 Electrochemical passivation Corrosion behavior Surface compositions and structures

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新风馆

城市环境设计 2024年第1期147卷 34-41页

作者：秋山弘明山胁隆也望月阳平中原拓海池口由纪宫原贤次川澄·小林研二写真事务所

我们在京都市中心设计了一家酒店，一条街道穿过该酒店，从而使酒店与街道相连。京都这座城市的历史是关于探索如何让街道在源自中国的120米长的巨大街区中穿过，以及如何在其中引入人类尺度和人类质感的历史。我们希望酒店更像是街道...

我们在京都市中心设计了一家酒店，一条街道穿过该酒店，从而使酒店与街道相连。京都这座城市的历史是关于探索如何让街道在源自中国的120米长的巨大街区中穿过，以及如何在其中引入人类尺度和人类质感的历史。我们希望酒店更像是街道的延伸，而不是占据空间的孤立结构。从本质上讲，这就是ACE酒店的理念，它为21世纪的酒店带来了一场革命。

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Effects of plating factors on morphology and appearance of electrogalvanized steel sheets

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中国有色金属学会会刊：英文版 2009年第4期19卷 835-841页

作者： hiroaki N AKANO Department of Materials Science and Engineering Faculty of EngineeringKyushu University

Because the lightness,the gloss and the press-formability of electrogalvanized steel sheets change depending on the morphology of deposited Zn,control of this factor is essential to improving these *** effects of plating factors on the morphology of deposited Zn were systematically discussed both from the crystallographic viewpoint of epitaxy between Zn and steel and from the electrochemical viewpoint of the overpotential for Zn *** factors include crystal orientation of steel substrate,current density,flow rate,temperature,addition of inorganic compounds to the solution and pre-adsorption of organic *** plating factors affect the overpotential for Zn deposition and epitaxy between Zn and *** crystal orientation index of the Zn basal plane and the platelet crystal size of Zn are decreased with increasing the overpotential for Zn *** are also decreased with decreasing the epitaxy between Zn and steel,even when the overpotential is kept *** the overpotential for Zn deposition is increased,the surface roughness of deposited Zn increases because of an increase in the inclination of the Zn basal plane to the steel *** the epitaxy between Zn and steel is decreased without changing the overpotential,the surface roughness is reduced due to the decrease in platelet crystal size of Zn,although the inclination of the Zn basal plane is somewhat *** lightness of deposited Zn is enhanced with decreasing the surface roughness of Zn.

关键词：电镀锌钢板外观形态

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Robust SOF Stackelberg game for stochastic LPV systems

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Science China(Information Sciences) 2021年第10期64卷 21-38页

作者： hiroaki MUKAIDANI Hua XU Graduate School of Advanced Science and Engineering Hiroshima University Faculty of Business Sciences The University of Tsukuba

A robust static output feedback（SOF） Stackelberg game with multiple followers in stochastic linear parameter varying（LPV） systems is investigated. The conditions for the existence of a robust SOF Stackelberg strategy set under H;constraints are established by the cross-coupled matrix inequality（CCMI）.To determine this strategy set, the optimization problems corresponding to the relevant cost bounds are defined, and their solution sets are derived using the Karush-Kuhn-Tucker conditions. The results show that the robust SOF Stackelberg strategy set can be obtained by solving higher-order cross-coupled matrix equations（CCMEs）. Because CCMEs are complex and difficult to solve numerically, a heuristic algorithm is developed by combining the CCMEs with the CCMIs. The convergence property is proven using the Krasnoselskii-Mann（KM） iteration algorithm. Finally, two numerical examples are solved to demonstrate the reliability and usefulness of the proposed heuristic algorithm.

关键词： Stackelberg games linear parameter varying (LPV) stochastic systems cross-coupled matrix equations (CCMEs)

Affected-Ear-Up 90°Maneuver Proves That Nystagmus Does Not Occur by the Stimulation to the Macula of the Utricle

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Journal of Biosciences and Medicines 2023年第5期11卷 144-150页

作者： hiroaki Ichijo Ichijo Ear Nose and Throat Clinic Hirosaki Japan

Background: The utricular macula is located on the floor of the utricle, approximately in the plane of the lateral semicircular canal, and is oriented to respond best to lateral tilts and side-to-side or fore-and-aft translations of the head. However, the details of the otolith ocular reflex are unknown. Pathophysiology of transient direction-changing geotropic positional nystagmus is a canalolithiasis in the lateral semicircular canal. The principle of affected-ear-up 90° maneuver is moving debris from a long arm to the utricle, therefore debris stimulates the utricular macula in the sitting position after the treatment. Objective: To clarify whether nystagmus occurs by the stimulation to the macula of the utricle. Methods: The subjects were 10 patients with lateral semicircular canal canalolithiasis. After the diagnosis, we performed affected-ear-up 90° maneuver immediately. We observed eye movements in the sitting position (chin-down 30°) just after the treatment. Results: No one showed nystagmus in the sitting position after the treatment. In all patients, positional nystagmus disappeared within 7 days after the treatment. Conclusion: Nystagmus does not occur by the stimulation to the macula of the utricle. Hence, we cannot assess the function of the utricle by the analysis of eye movements, and ocular counter-rolling is considered to be a semicircular canal ocular reflex.

关键词： Benign Paroxysmal Positional Vertigo Canalolithiasis Ocular Counter-Rolling Otolith Ocular Reflex Lateral Semicircular Canal

On the generalized derivations of bimodules

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Frontiers of Mathematics in China 2017年第1期12卷 135-142页

作者： hiroaki KOMATSU Faculty of Computer Science and Systems Engineering Okayama Prefectural University Soja 719-1197 Japan

Recently, we introduced the notion of a generalized derivation from a bimodule to a bimodule. In this paper, we give a more general notion based on commutators which covers generalized derivations as a special case. U... 详细信息

关键词： Generalized derivation separable algebra extension

Micelle-crosslinked hydrogels with stretchable,self-healing,and selectively adhesive properties:Random copolymers work as dynamic yet self-sorting domains

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聚集体(英文)

聚集体(英文) 2023年第3期4卷 71-83页

作者： hiroaki Asai Motoki Shibata Mikihito Takenaka Shinichi Takata Kosuke Hiroi Makoto Ouchi Takaya Terashima Department of Polymer Chemistry Graduate School of EngineeringKyoto UniversityKatsuraKyotoJapan Office of Society-Academia Collaboration for Innovation Kyoto UniversityYoshida-honmachiKyotoJapan Institute for Chemical Research Kyoto UniversityUjiKyotoJapan RIKEN SPring-8 Center Sayo-choSayo-gunHyogoJapan J-PARC Center Japan Atomic Energy AgencyTokaiIbarakiJapan

The design of crosslinking domains is a vital factor to create functional hydrogels with controlled physical,mechanical,and adhesive *** paper demonstrates versatile synthetic systems of micelle-crosslinked hydrogels with highly stretchable,self-healing,and selectively adhesive *** this,methacrylate-bearing random copolymer micelles are designed as physical and covalent crosslink domains via the self-assembly of amphiphilic random copolymers carrying hydrophilic poly(ethylene glycol)(PEG),hydrophobic butyl or dodecyl groups,and methacrylate-terminal PEG in *** size,aggregation number,and pendant methacrylate number of the micelles are controlled by the composition and degree of *** are efficiently obtained from the free radical polymerization of hydrophilic monomers such as PEG acrylate and acrylamide in the presence of the micelle crosslinkers in *** to the dynamic yet selective chain exchange properties of the micelle domains,the hydrogels are highly stretchable up to over 1000%and show self-healing and selectively adhesive *** self-healing of hydrogels is promoted upon heating due to the fast chain exchange of the micelle domains,whereas hydrogels consisting of micelles with different alkyl groups are never adhesive because of their self-sorting properties.

关键词： adhesion hydrogel random copolymer micelle self-assembly self-healing self-sorting

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高强韧铝合金压挤双控铸造工艺及装备开发

铸造工程 2024年第2期48卷 14-19页

作者：三吉博晃魏啟金袁海波钱激 UBE MACHINERY株式会社山口宇部755-8633 东风汽车零部件(集团)有限公司通用铸锻分公司湖北十堰442002 东风商用车技术中心工艺研究所湖北武汉430056

介绍了宇部的压挤双控压铸(HFC)设备的构造和铸造成形工艺特点,通过增加加压室、引入氮气加压、局部加压以及热处理工艺优化等措施实施,避免了重力铸造、压铸浇注以及低压铸造液面下降过程中产生氧化物夹杂等缺陷,试制样件微观金相组织... 详细信息

介绍了宇部的压挤双控压铸(HFC)设备的构造和铸造成形工艺特点,通过增加加压室、引入氮气加压、局部加压以及热处理工艺优化等措施实施,避免了重力铸造、压铸浇注以及低压铸造液面下降过程中产生氧化物夹杂等缺陷,试制样件微观金相组织和力学性能检测结果完全满足产品高强高韧的技术要求。

关键词：铝合金压挤双控铸造高强高韧高效

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Laser speckle flowgraphy findings in a patient with radiation retinopathy

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International Journal of Ophthalmology(English edition) 2022年第1期15卷 172-174页

作者： Satoru Kase Ayaka Hasegawa Kiriko Hirooka hiroaki Endo Kousuke Noda Susumu Ishida Department of Ophthalmology Faculty of Medicine and Graduate School of MedicineHokkaido UniversitySapporo 060-8638Japan Department of Ophthalmology Teine Keijinkai HospitalSapporo 006-0811Japan

Dear Editor,I am Satoru Kase, from Hokkaido University Hospital, Japan. Choroidal melanoma is a serious intraocular tumor, which threatens patients’ vision and life. Treatments for choroidal melanoma consist of surge... 详细信息

关键词： melanoma surgery intraocular