[en] This paper studied the image quality of various medical digital images and to install a small but total image management and communication system to file images. The system consists of a filing system with a laser scanning digitizer (2,000 x 2,000 x 8 bits), an optical disk (3.8 GB), two HD CRTs, and a 1.6 GB magnetic disk. This system can file on-line the images from a second filing system with FCR (on-line) and a Konica direct imaging system during treatment and follow-up, a CCD TV simulator system for a remote after-loading system, a dose map on CT and MR images through a self-made treatment planning system on the PC level, a CCD TV (RGB) system for local lesions, and portal images, through the imaging plate, for brachytherapy

[en] We have carried out model calculations of infrared absorption spectra for (La_1-xSr_x)₂CuO₄ superconductors. The result shows the anisotropic shielding of incident electromagnetic waves does not explain the infrared anomaly commonly observed for high-T_c superconducting oxides. (orig.)

[en] We investigated the relationship between differences in multi walled carbon nano tubes (MWCNTs) and the biological responses they elicit in order to develop biocompatible MWCNTs. We exposed human bronchial epithelial (BEAS-2B) cells to two sizes and six grades of MWCNTs and measured the resulting cell viability, total reactive oxygen and/or nitrogen species (tROS/RNS) production, and cytokine secretion. Although differences in cellular tROS production were associated with differences in grades of MWCNTs, the graphitization temperature of MWCNTs apparently did not influence tROS production. However, cell viability was affected by MWCNT graphitization temperature and diameter. Moreover, cytokine secretion was apparently affected by treatment temperature, but not MWCNT diameter. We concluded that the highest temperature resulted in the most biocompatibility because impurities and carbon defects were removed from the MWCNTs. However, other mechanisms are possible. Therefore, it is important to optimize each type of MWCNT by monitoring biological responses that type elicits during the manufacturing stage for applications involving biology and medicine.

[en] A Fulde-Ferrell-Larkin-Ovchinnkov (FFLO) state is investigated in the quasi-2D heavy fermion CeCoIn₅ by a ¹¹⁵In NMR study in both perpendicular and parallel field to the ab-plane. Although the topology of the phase transition lines in the H-T phase diagram of the FFLO state is identical for both configurations, there are several remarkable differences between them