Search Results - Springer

Article

Time-of-Flight Diffraction Measurement Using Laser Ultrasound

We developed a new time-of-flight diffraction (TOFD) method based on laser ultrasound, which can use not only longitudinal waves but also shear waves. This method is more advantageous than the conventional TOF...

T. Mihara, Y. Otsuka, H. Cho, K. Yamanaka in Experimental Mechanics (2006)

Article

MRI of cortical dysplasia – correlation with pathological findings

Cortical dysplasia (CD) is the most epileptogenic structural lesion associated with epilepsy and patients with intractable seizures caused by this condition are good surgical candidates. MRI plays an importan...

N. Usui, K. Matsuda, T. Mihara, T. Tottori, T. Ohtsubo, K. Baba… in Neuroradiology (2001)

Article

Low Temperature Crystallization of PbTiO₃ Thin Film by Excimer Laser Irradiation

Lowering the fabrication temperature for ferroelectric films is very important not only for silicon monolithic circuits but also for various substrates. Amorphous PbTiO₃ thin films were prepared on glass substrat...

T. Mihara, S. Mochizuki, T. Ishida, Y. Sato, J. Nishii in MRS Online Proceedings Library (1999)

Chapter and Conference Paper

ASCA Observations of the Quasar Concentration 1338+27

There are several regions where a group of quasars are significantly clustered in the physical space. In the “CFHT grens survey” conducted by Crampton et al. (Crampton et al. 1989 and references therein), the ...

T. Yamada, Y. Ueda, T. Takahashi, T. Mihara, N. Kawai, Y. Ishisaki in The Hot Universe (1998)

Chapter and Conference Paper

The X-Ray Spectrum and Variability of NGC 4151

We report investigation of the iron Kα line in a long (100 ks) ASCA observation of NGC 4151. This observation offers unprecedented good statistics; however, the situation is complicated by the fact that the absor...

K. M. Leighly, M. Matsuoka, M. Cappi, T. Mihara in The Hot Universe (1998)

Chapter and Conference Paper

X-Ray Properties of High-Z Radio-Quiet Quasars: ASCA Observations

The first-ever high energy (∼ 1–30 keV) X-ray spectra of three z ∼ 2 radio-quiet quasars (RQQs) are presented. If confirmed, the most interesting result is the marginal, but consistent, evidence for FeK_aemission ...

M. Cappi, M. Matsuoka, C. Vignali, A. Comastri, T. Mihara, C. Otani… in The Hot Universe (1998)

Article

A dark cluster of galaxies at redshift z = 1

The abundance of metals in the hot, gaseous X-ray haloes of galaxy clusters depends crucially on the evolution of the constituent galaxies and their associated stellar populations. The metal abundances in X-ra...

M. Hattori, Y. Ikebe, I. Asaoka, T. Takeshima, H. Böhringer, T. Mihara… in Nature (1997)

Article

The Effect of Hydrogen Bonding on the Mesomorphic Properties for Side Chain Type Liquid Crystalline Polyurethanes

Mesomorphic properties and temperature dependence of the hydrogen bonding between urethane bonds (H-bonding) for side chain type liquid crystalline polyurethane(SLCPU)s were studied by thermally controlled FT-...

T. Mihara, N. Koide in MRS Online Proceedings Library (1996)

Chapter

Development of Wide Band Pulser with Step-Function Waveform

The broad band transducer has generalized in the ultrasonic non-destructive testing these days. A received waveform of 1.5 cycles has widely been used, and a received waveform of one cycle is near completion f...

Y. Udagawa, K. Date, T. Mihara in Review of Progress in Quantitative Nondest… (1995)

Chapter

Acoustic Microscope Image from Round Shape Specimen

Due to high frequency of applying ultrasonics up to 1GHz, acoustic microscope has estimate microstructural features with higher resolving power comparing other acoustic methods in laboratories^[1]~[5]. However in ...

T. Mihara, G. Suzuki, K. Date, Y. Udagawa… in Review of Progress in Quantitative Nondest… (1995)

Article

Elastic constant measurement by using line-focus-beam acoustic microscope

The purpose of this study is to develop a method for measuring elastic constants using a LFB acoustic microscope. For this purpose, a theoretical procedure for the estimation of Young's modulus and Poisson's r...

T. Mihara, M. Obata in Experimental Mechanics (1992)

Article

New observations of the cyclotron absorption feature in Hercules X–1

ALTHOUGH neutron stars are generally believed to be born with intense (10¹¹–10¹³ G) magnetic fields^1,2, which then gradually decay³, measurements of their field strengths remain uncertain. In the special case of ...

T. Mihara, K. Makishima, T. Ohashi, T. Sakao, M. Tashiro, F. Nagase, Y. Tanaka… in Nature (1990)

Article

Stress dependence of leaky surface wave on PMMA by line-focus-beam acoustic microscope

The authors discuss a line-focus-beam (LFB) acoustic microscope as a system for evaluating local stresses in polymeric materials. The goal of this paper is to reveal the stress-dependence of the velocity of th...

M. Obata, H. Shimada, T. Mihara in Experimental Mechanics (1990)

Chapter and Conference Paper

X-Ray Study of Normal Galaxies with Ginga

Results from X-ray observations of nearby normal galaxies with the X-ray astronomy satellite Ginga are presented. X-ray spectra in the energy range 2-20 keV were obtained for the first time from four spiral (M31,...

T. Ohashi, K. Makishima, T. Mihara, T. Tsuru, H. Awaki, K. Koyama… in Windows on Galaxies (1990)