M. Song, K. Mitsuishi, M. Takeguchi, K. Furuya, R. C. Birtcher High Voltage Electron Microscopy Station, National Institute for Materials Science, Sakura 3-13, Tsukuba, 305-0003 Japan Materials Science Division, Argonne National Laboratory, MSD/212, 9700 South Cass Avenue, Argonne, IL 60439-4838 ABSTRACT An abnormal phenomenon, low energy ion induced X-ray emission from insulators is reported a...

The purpose of this study was to optimize X-ray conditions for full spine X-ray examinations in slot-scan digital radiography (SSDR). Follow-up of spinal deformities, such as scoliosis, typically involves many radiographs of the patient throughout childhood and adolescence. The Radiation doses for the full spine X-ray examination should be minimized. Recently, SSDR has been introduced for full ...

We report an upconverting nanomaterial composition, [Y(2)O(3); Yb (2%), Er (1%)], that converts both X-ray and high-fluence NIR irradiation to visible light. This composition is compared to a higher Yb(3+) doped composition, [Y(2)O(3); Yb (10%), Er (1%)], that displays diminished visible X-ray scintillation, but shows enhanced red wavelength centered upconversion emission. These nanocrystals ha...

Metal-organic complexes (MOCs) as promising candidates for directly visual X-ray detection at room temperature are rare and discovered unexpectedly, even though every crystalline material needs X-ray diffraction studies. Here, we report a rational strategy of mimicking host-guest system for developing high-sensitive X-ray-induced photochromic materials. Two resulting calix-like metal-organic co...

小室正人:東 京大学理学 部動物学教室,東 京都文京区本郷7-3-1,〒113 1 Present address: Department of Anatomy , The Teikyo University School of Medicine, Kaga 2-11-1, Itabashiku, -T173. The ovarian tumors induced by X-ray irradiation were histologically examined in ddY/F and C3H/Tw strains of mice 15 months after irradiation. Luteomas were developed predomi nantly in ddY/F mice after whole-body irradiation and tubular aden...

Cd1-xMnxS (x = 0, 0.1, 0.2) nanoparticles, prepared by co-precipitation method under ultrasonic irradiation, were studied by means of X-ray diffraction, scanning electron microscopy, FTIR and UV-Vis  spectroscopy measurements. The average particle size of nanoparticles from the scanning electron microscopy image is about 20-30 nm. Results show that partial substitution of Cd by Mn leads to a re...

A nearly simultaneous X-ray/optical (Chandra and VLT) observational campaign of RXJ0806.3+1527 has been carried out during 2001. These observations allowed us to phase the X–ray and optical light curves for the first time. We measured a phase–shift of ∼0.5, in good agreement with the presence of two distinct emission regions and with the X–ray irradiation process predictions. The Chandra data a...

We suggest a new scenario to explain the outburst light curves of black hole soft X-ray transients together with the secondary maximum and the bump seen on their decay phases. Our explanations are based on the disk instability models considering the effect of X-ray irradiation. The scenario is consistent with the observed X-ray delays by a few days with respect to the optical rise for both the ...

In this pepper Fe2O3 nanoparticles were synthesized via a fast microwave method. Then Fe2O3-TiO2 nanocomposites were synthesized by a sonochemical-assisted method. The prepared products were characterized by X-ray diffraction pattern, scanning electron microscopy and Fourier transform infrared spectroscopy. The photocatalytic behaviour of Fe2O3-TiO2 nanocomposites was evaluated using the degrad...

In this paper, undopedZnO and Co-ZnOnano structureswith different molar ratio of Cobalt have been synthesized by the sonochemical method. Structure have been characterized by Fourier Transform (FTIR) and UV–Vis spectroscopy,Scanning Electron Microscopy (SEM), Energy Dispersive Analytical X-Ray (EDAX), and X-Ray Diffraction (XRD) methods. Moreover, the direct band gap has been calculated by Tauc...