Abstract: A radioactivity analyzing apparatus for analyzing a radionuclide contained in a sample material. The apparatus includes a radiation detector that detects a radiation to be detected emitted from the sample material and a radiation analyzer configured to analyze the radiation based on an output from the radiation detector. The radiation analyzer includes a pulse-height analyzer configured to extract a pulse-height distribution from a pulse signal being output from the radiation detector and depending on the radiation, an inverse-problem operator configured to perform an inverse-problem solution of the pulse-height distribution to extract an energy spectrum of the radiation, and a deterioration detector configured to determine a deterioration state of the radiation detector based on the extracted energy spectrum.

Abstract: A radioactivity analyzing apparatus for analyzing a radionuclide contained in a sample material. The apparatus includes a radiation detector that detects a radiation to be detected emitted from the sample material and a radiation analyzer configured to analyze the radiation based on an output from the radiation detector. The radiation analyzer includes a pulse-height analyzer configured to extract a pulse-height distribution from a pulse signal being output from the radiation detector and depending on the radiation, an inverse-problem operator configured to perform an inverse-problem solution of the pulse-height distribution to extract an energy spectrum of the radiation, and a deterioration detector configured to determine a deterioration state of the radiation detector based on the extracted energy spectrum.

Abstract: An aircraft ice protection system is provided for preventing ice accretion on a wing of an aircraft or removing the accreted ice. Bleed air extracted from a main engine of the aircraft and air introduced from an air intake installed on an airframe and heated by a heat source of the airframe of the aircraft are selectively supplied to a hot air chamber formed inside the wing, thereby carrying out ice protection.

Abstract: An aircraft ice protection system is provided for preventing ice accretion on a wing of an aircraft or removing the accreted ice. Bleed air extracted from a main engine of the aircraft and air introduced from an air intake installed on an airframe and heated by a heat source of the airframe of the aircraft are selectively supplied to a hot air chamber formed inside the wing, thereby carrying out ice protection.

Abstract: A radiation measuring device includes a computing unit that receives an input of a count value of a count portion configured to receive an input of a digital pulse from a pulse height discriminator and count the digital pulse in a fixed cycle and an integrated value of an adder-subtractor accumulation portion configured to add the digital pulse and subtract a feedback pulse and finds a first current rate on the basis of the count value and the integrated value and a second count rate on the basis of the integrated value, so that soundness of the adder-subtractor accumulation portion is diagnosed and outputted by comparing the first count rate with the second count rate. A radiation measuring device of a simple configuration and a diagnosis method thereof enabling a high-accurate self-diagnosis online on the count rate measurement that is the keystone of the radiation measurement can be thus obtained.

Abstract: A radiation measuring device includes a computing unit that receives an input of a count value of a count portion configured to receive an input of a digital pulse from a pulse height discriminator and count the digital pulse in a fixed cycle and an integrated value of an adder-subtractor accumulation portion configured to add the digital pulse and subtract a feedback pulse and finds a first current rate on the basis of the count value and the integrated value and a second count rate on the basis of the integrated value, so that soundness of the adder-subtractor accumulation portion is diagnosed and outputted by comparing the first count rate with the second count rate. A radiation measuring device of a simple configuration and a diagnosis method thereof enabling a high-accurate self-diagnosis online on the count rate measurement that is the keystone of the radiation measurement can be thus obtained.

Abstract: A heat pipe unit is comprised of a tank, a plurality of pipes provided upright on and joined to a side of the tank to be in communication with the tank, the pipes being closed at an end thereof opposite an end where the pipes are joined to the tank; a working fluid sealed in the tank and movable between the plurality of pipes and the tank, and a plurality of fins fitted over and assembled to the plurality of pipes. The tank of this heat pipe unit is embedded in a base block of metal to provide a heat pipe type heat exchanger. A plurality of heat pipe units may be arranged in a row on the base block. The tank is preferably formed from a pipe of circular cross section and has spiral grooves provided on an inner surface thereof. The heat pipe unit and the heat pipe type heat exchanger are simple in structure and excellent in cooling performance, and are easy to produce.

Abstract: A heat pipe unit is comprised of a tank, a plurality of pipes provided upright on and joined to a side of the tank to be in communication with the tank, the pipes being closed at an end thereof opposite an end where the pipes are joined to the tank; a working fluid sealed in the tank and movable between the plurality of pipes and the tank, and a plurality of fins fitted over and assembled to the plurality of pipes. The tank of this heat pipe unit is embedded in a base block of metal to provide a heat pipe type heat exchanger. A plurality of heat pipe units may be arranged in a row on the base block. The tank is preferably formed from a pipe of circular cross section and has spiral grooves provided on an inner surface thereof. The heat pipe unit and the heat pipe type heat exchanger are simple in structure and excellent in cooling performance, and are easy to produce.

Abstract: An infrared image pick-up apparatus includes: a body having a condenser lens for condensing an infrared ray emitted from an object, a sensor for detecting intensity of the condensed ray and generating an electric signal corresponding to the intensity, a signal processing circuit for processing the signal from the sensor, and a display device for displaying a two-dimensional infrared image in accordance with a signal from the circuit; and a grip provided separately from the body and attached thereto. The grip has an operating member for adjusting an infrared image on the display device.

Abstract: In addition to the weft sensors used in the conventional weft sensor mechanism, an additional weft sensor is arranged on the outer side at a position beyond approach by the leading end of normally inserted wefts. Misjudgement due to intermediate weft insertion is fully avoided.