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Exploiting scattering media for exploring 3D objects

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Light(Science & Applications) 2016年第1期5卷 202-208页

作者： Alok Kumar Singh Dinesh N Naik Giancarlo Pedrini mitsuo takeda Wolfgang Osten Institut für Technische Optik(ITO)and Stuttgart Research Center of Photonic Engineering(SCoPE) University of StuttgartPfaffenwaldring 970569 StuttgartGermany School of Physics University of HyderabadHyderabad 500046India Center for Optical Research and Education(CORE) Utsunomiya UniversityYoto 7-1-2UtsunomiyaTochigi321-8585Japan

Scattering media,such as diffused glass and biological tissue,are usually treated as obstacles in *** cope with the random phase introduced by a turbid medium,most existing imaging techniques recourse to either phase compensation by optical means or phase recovery using iterative algorithms,and their applications are often limited to two-dimensional *** contrast,we utilize the scattering medium as an unconventional imaging lens and exploit its lens-like properties for lensless threedimensional(3D)imaging with diffraction-limited *** spatially incoherent lensless imaging technique is simple and capable of variable focusing with adjustable depths of focus that enables depth sensing of 3D objects that are concealed by the diffusing ***-field imaging with diffraction-limited resolution is verified experimentally by a single-shot recording of the 1951 USAF resolution test chart,and 3D imaging and depth sensing are demonstrated by shifting focus over axially separated objects.

关键词： intensity correlation technique lensless imaging scattering media 3D imaging

光学空间频率合成器及其在无分散三维形状计测中的应用(英文)

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实验力学 2007年第3期22卷 346-349页

作者：段志辉宫本洋子武田光夫電気通信大学

传统的白光干涉法、光学频谱扫描干涉法、低相干度断层扫描法以及其他三维形状计测法均采用宽带光学频谱光源实现绝对高度的测量,因此当测量对象存在不均匀的折射率分布或者光学吸收特性时,以上方法将不能给出准确的测量结果。针对传统... 详细信息

传统的白光干涉法、光学频谱扫描干涉法、低相干度断层扫描法以及其他三维形状计测法均采用宽带光学频谱光源实现绝对高度的测量,因此当测量对象存在不均匀的折射率分布或者光学吸收特性时,以上方法将不能给出准确的测量结果。针对传统绝对干涉法的这些制约,本研究通过干涉现象中时空参数的类比,提出了宽带空间频谱单色光源的概念,并通过改变光源的空间频谱构造验证了无分散三维绝对形状测定方法的可行性。

关键词：光学空间频率合成器三维形状计测空间频谱扫描干涉法梳状空间频率扫描干涉法正弦函数空间频率扫描干涉法

Spectroscopic Determination of C,N,and O Abundances of Solar-analog Stars Based on the Lines of Hydride Molecules

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Research in Astronomy and Astrophysics 2023年第2期23卷 107-120页

作者： Yoichi takeda 11-2 Enomachi Naka-kuHiroshima-shi730-0851Japan

Photospheric C,N,and O abundances of 118 solar-analog stars were determined by applying the synthetic-fitting analysis to their spectra in the blue or near-UV region comprising lines of CH,NH,and OH molecules,with an aim of clarifying the behaviors of these abundances in comparison with[Fe/H].It turned out that,in the range of-0.6■[Fe/H]■+0.3,[C/Fe]shows a marginally increasing tendency with decreasing[Fe/H]with a slight upturn around[Fe/H]~0,[N/Fe]tends to somewhat decrease toward lower[Fe/H],and[O/Fe]systematically increases (and thus[C/O]decreases) with a decrease in[Fe/H].While these results are qualitatively consistent with previous determinations mostly based on atomic lines,the distribution centers of these[C/Fe],[N/Fe],and[O/Fe]at the near-solar metallicity are slightly negative by several hundredths of dex,which is interpreted as due to unusual solar abundances possibly related to the planetary formation of our solar ***,clear anomalies are not observed in the[C,N,O/Fe]ratios of planet-host *** out of four very Be-deficient stars were found to show anomalous[C/Fe]or[N/Fe]which may be due to mass transfer from the evolved companion,though its relation to the Be depletion mechanism is still unclear.

关键词： Galaxy evolution-planet-star interactions-stars abundances-stars atmospheres-stars solar-type

Producing micro-droplet of dilute sulphuric acid on pure iron surface and observing its corrosion behaviour by atomic force microscopy

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中国有色金属学会会刊：英文版 2006年第B2期16卷 749-752页

作者： mitsuo KIDO Koji MUKAI Faculty of EngineeringHiroshima Institute of Technology 1-2-1 MiyakeSaeki-KuHiroshima 731-5193Japan

A simple method was presented to produce a micro-droplet of sulphuric acid on a pre-selected micro-zone on a pure iron surface with the tip of an AFM cantilever. The three-dimensional shape of the droplet was imaged with the AC non-contact mode of the AFM, and the liquid/solid interface was observed in situ during corrosion using the contact mode. The substrate surface beneath the droplet was lowered by approximately 19 nm after 3.6 ks of adhesion. This method has important implications for experimental studies of micro-zone corrosion or lubrication.

关键词：纯铁表面腐蚀稀释硫酸微滴原子力显微镜钢

Analysis of air adsorptive on solid surfaces by AFM and XPS

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中国有色金属学会会刊：英文版 2006年第B2期16卷 753-758页

作者： mitsuo KIDO Faculty of EngineeringHiroshima Institute of Technology 1-2-1 MiyakeSaeki-KuHiroshima 731-5193Japan

Solid surfaces of HOPG, pure copper, chromium, zinc, copper and SUS304 steel were observed in ambient air with an a.c. non-contact mode of atomic force microscope(AFM). A type of film-like-domains (adsorptive) was detected on the above surfaces. The thickness of the adsorptive was about 1.2-2.4 nm in this case. The film-like-adsorptive was confirmed to be a liquid layer by the static contact-mode scanning, the measurement of the elasticity and viscosity images, and the detection of the condensation/ evaporation phenomena when the relative humidity changed. The liquid layer is considered to be condensed water covered with organic contaminant.

关键词：固体表面空气吸附成分分析原子力显微镜 XPS 水有机污染物

Approaches to Stable Operation of Shaftless Centrifugal Pump

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Journal of Thermal Science 2009年第1期18卷 48-53页

作者： Ryunosuke Kawashima mitsuo Uno Toshiaki Kanemoto Department of mechanical engineering Kyushu Kyoritsu University 1-8 Jiyugaoka Faculty engineering Kyushu Institute of Technology

The shaft-less impeller of the centrifugal pump, which is driven by the magnetic induction, was developed. Theimpeller rotates under the floating condition without any control device. The floating condition of the impeller isrealized by utilizing the pressure in pump casing. The pump performance and the rotational behavior of the impellerwere investigated experimentally. It has found that the floating position of the impeller become quite unstablein a partial flow rate operation. And the pressure distribution at the casing wall affects the rotational posture ofthe impeller. This paper presents the effect of the casing treatment on the rotational posture of the impeller and thepressure distribution. The reasonable casing treatment is available for the stable rotational posture of the impeller.

关键词： Centrifugal pump Impeller Magnetic induction Casing treatment Passive control

Is resilience socially emerging or embedded?A review of“resilience”under climate change in Sri Lanka

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Journal of Safety Science and Resilience 2021年第4期2卷 258-266页

作者： Ryo Tsuchida Shutaro takeda Graduate School of Advanced Integrated Studies in Human Survivability Kyoto UniversityKyotoJapan

Since the advent of a new academic regime that examines the nexus of humans and water,resilience studies of the coevolution of human-water systems have advanced rapidly because of the climate ***,the concept of resilience poses a new social *** study analyzes the gap in resilience studies through a Sri Lankan water-related disaster research ***,the authors discuss the potential and challenges for resilience evolution under climate change in Sri *** the nuance of resilience,the review showed that resilience is complementarily emerging and embedded in culture and society,such as traditional knowledge and local history,and from scientific research-oriented translation and wide international policy view in *** is the accumulation of stable states and supporting mechanisms found in the interaction between normal phases and emergencies in elements unique to the *** study suggests that it is critical to support the resilience and mechanisms of the whole and each layer,leveraging the diverse and sustainable livelihoods in the Sri Lankan context against climate change.

关键词： Resilience Climate change Water-related disasters Adaptation Sri Lanka

Study on fragmentation behavior of taxoids by tandem mass spectrometry

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Chinese Science Bulletin 2000年第8期45卷 688-698页

作者： Zeper Abliz mitsuo Takayama Institute of Materia Medica Chinese Academy of Medical Sciences & Peking Union Medical CollegeBeiging 100050.ChinaFaculty of Pharmaceutical SciencesToho University2-2-1 MiyamaFunabashiChiba 274Japan

We have studied the fragmentation behavior of positive and negative ions of taxoi and 6/8/6 type taxoids, the influence of different substituents on fragmentation, and the correlativity between fragmentation patterns and structure by MS/MS technique with different ionization methods such as FAB-MS, ESI-MS, ete. We have also investigated in detail the fragmentation of various molecular-related ions, such as [M+H]+, [M+Na]+ and [M-H] ions, and the formation pathways of characteristic fragment ions. It has been found that there exists some competing reaction between the loss of C-13 side chain and decomposition by loss of acetic acid. In addition, by comparing CID spectra obtained with low- and high-energy collision, it is seen that CID-MS/MS with low-energy collision is more suitable for the study of the structural analysis of small molecules and drug metabolites. The experimental results demonstrate that MS/MS spectra can reflect more effectively the slight difference of structure between the related

关键词： taxol taxoids tandem mass spectrometry fragmentation behavior.

EFFECT OF TRIAXIAL STRESS CONSTRAINT ON THE DEFORMATION AND FRACTURE OF POLYMERS

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Acta Mechanica Sinica 2002年第5期18卷 480-493页

作者：王铁军 Kikno Kishimoto mitsuo Notomi Department of Engineering Mechanics Xi'an Jiaotong UniversityXi'an 710049China Department of Mechanical and Control Engineering Tokyo Institute of TechnologyTokyo 152-8552Japan Department of Mechanical Engineering Meiji UniversityKawasaki-shiKanagawa 214-8571Japan

One purpose of this paper is to give a brief overview on the research status of deformation,fracture and toughening mechanisms of polymers,including experimental,theoretical and numerical *** is on the more recent progresses of micromechanics of rubber particle cavitation and crazing,and the de- velopment of fracture criteria for ductile polymers. The other purpose is to study the effect of triaxial stress constraint on the deforma- tion and fracture behavior of ***(PC),acrylonitrile-butadiene- styrene(ABS)and PC/ABS alloy are considered in this investigation.A series of circumferentially blunt-notched bars are used to experimentally generate different tri- axial stress *** fracture surfaces of specimens with different notch radius are examined by scanning electron microscope(SEM)to study the fracture and tough- ening mechanisms of polymer *** is shown that the triaxial stress constraint has a significant effect on the deformation,fracture and toughening of PC,ABS and PC/ABS *** will also discuss the extent to which a micromechanies criterion proposed by the first author can serve as a fracture criterion for ductile polymers. A new ductile fracture parameter is emphasized,which can be employed to evaluate the fracture ductility of *** state independence of the parameter for the PC,ABS and PC/ABS alloy has been experimentally verified.

关键词： deformation fracture toughening cavitation crazev micromechanics PC ABS polymer alloy