Abstract: A leaked information tracing technique enabling a recipient of leaked information to be identified. A trace center apparatus includes a tracer generation and registration part which issues a tracer identification number uniquely identifying both of a content residing on different computer and a tracer, generates a tracer program having the function of reporting identification information of a computer on which the content resides and the tracer identification number to a trace center, and registers the tracer program with the trace center.

Abstract: According to one embodiment, an account server includes a first communication module, a second communication module, a database, and a controller. The first communication module receives a logon request from an electronic device, and establishes a session with the device. The second communication module obtains data from a service site connected to a network. The database associatively stores data for identifying electronic devices, data for identifying and accessing service sites, and names of services. The controller receives a service name from an electronic device which is established a session, obtains data from a service site by using data for identifying and accessing the site, and sends the data to the electronic device which is established a session.

Abstract: In order to prevent destruction of a read gate by excessive storage of charge without any addition or change to the manufacturing process, the array type X-ray detection apparatus using a direct conversion system, which directly converts irradiation X-rays to charge, provides each pixel cell with a sensor section for converting X-rays to an amount of charge according to the amount of X-rays, a charge collecting electrode for storing the charge generated, a read gate for transferring the stored charge to an external read amplifier and a MIS diode using a TFT. A clamp signal is applied to one end of the MIS diode. The read gate and MIS diode are formed in the same manufacturing process. Since the amount of charge stored in the charge collecting electrode is clamped to the amount of charge corresponding to the clamp signal voltage by the MIS diode, the read gate is not destroyed even with excessive X-ray irradiation.

Abstract: In order to prevent destruction of a read gate by excessive storage of charge without any addition or change to the manufacturing process, the array type X-ray detection apparatus using a direct conversion system, which directly converts irradiation X-rays to charge, provides each pixel cell 30 with a sensor section for converting X-rays to an amount of charge according to the amount of X-rays, a charge collecting electrode 3 for storing the charge generated, a read gate 6 for transferring the stored charge to an external read amplifier and a MIS diode 10 using a TFT. A clamp signal is applied to one end of the MIS diode 10. The read gate 6 and MIS diode 10 are formed in the same manufacturing process. Since the amount of charge stored in the charge collecting electrode 3 is clamped to the amount of charge corresponding to the clamp signal voltage by the MIS diode 10, the read gate is not destroyed even with excessive X-ray irradiation.

Abstract: A medical laser probe to be used as a laser irradiation unit in laser treatment that is performed by irradiating a living body with laser light. The laser probe irradiates laser light uniformly, utilizing laser light effectively by concentration thereof, achieving limited irradiation of laser light and taking countermeasures against stains forming on the probe. The laser probe is provided with (1) a transparent light diffuser for radiating laser light received by a light-guide fiber in the direction along the longitudinal axis of the light diffuser and in radial directions from this axis to the peripheral side surface thereof and (2) a detachable protective diffusion tube for further diffusing laser light radiated from the transparent light diffuser. A reflector may be provided between the light diffuser and the diffusion tube. Further, shielding plates may be provided on the protective diffusion tube.

Abstract: There is provided an oxide dispersion-strengthened nickel alloy which has a hot working property, a structure stability at high temperature, improved creep characteristics at high temperature and improved heat resistant fatigue characteristics. The oxide dispersion-strengthened alloy is composed of an oxide containing one or more kinds of elements in an amount of 2 wt % or less selected from the group composed of titanium, zirconium and hafnium, chromium in an amount of 15-35 wt %, carbon in an amount of 0.01-0.4 wt % and Y.sub.2 O.sub.3 in an amount of 0.3-2.0 wt %, and the balance of substantially nickel, wherein Y.sub.2 O.sub.3 is dispersed as particles in the matrix of the nickel alloy containing one or more kinds of elements selected from the group composed of titanium, zirconium and hafnium, chromium and carbon.