摘要:
A signal suppressing apparatus for suppressing undesired signal components, in which a first filter electrically simulating a propagation system A of a physical phenomena such as a sound, vibration, electricity, etc. is mounted; a signal having a correlation to the signal to be input to the propagation system A is input to this first filter; and the output of the first filter exerts an influence upon the signal passing the propagation system A to make the passed signal approximate the intended value, wherein the first filter is split into a plurality of filters, each of which is composed by a discrete DSP, outputs are individually calculated in the split individual filters, and the individual calculation results are tabulated, whereby a value the same as the value obtained where the calculation is made without splitting of the first filter is obtained. This enables high speed signal processing even if a high speed DSP is not used.
摘要:
An active noise reduction device for reducing the noise produced by cooling fans in a computer. The active noise reduction device comprises a duct mounted on the casing of the computer and having at least one air passage. One end of the passage communicates with the interior of the casing near the cooling fans and the other end is open to the atmosphere. A first microphone is arranged in the duct near the first end opening for detecting noise, and a second microphone is arranged in the duct near the second end opening. A speaker is arranged in the duct near the second opening, and a controller controls the speaker in response to outputs of the first and second microphones for reducing the noise produced in the casing. The speaker makes a sound having a reverse phase to that of the noise produced in the computer and the speaker sound is superimposed on the noise.
摘要:
An active noise elimination apparatus for eliminating noise generated from a blower by generating from a sound generation unit a sound which offsets the noise, in a cooling system for cooling a heat source by air blown from the blower and exhausted to an exhaust port of the system through a duct, includes a first sound reception unit for receiving the noise generated from the blower; a first simulation unit for outputting a sound to the sound generation unit simulating the noise generated from the blower and transmitted to the exhaust port through the duct; a second simulation unit for receiving as input a noise simulating signal of the first simulation unit so as to simulate a detouring sound generated from the sound generation unit and transmitted to the first sound reception unit through the duct; and a subtraction unit for subtracting the detouring sound simulating signal of the second simulation unit from the noise signal received by the first sound reception unit and outputting the result to the first simulation unit.
摘要:
A magnetic resonance imaging (MRI) system acquires MRI data within one patient breath-hold sufficient to generate (a) at least one tag-off first type non-contrast cardiac perfusion image using a data acquisition sub-sequence including a non-selective IR (inversion recovery) pulse and (b) at least one tag-on second type non-contrast cardiac perfusion image using a data acquisition sub-sequence including a non-selective IR pulse and a spatially selective IR pulse. A set of registered tag-on and tag-off images are differentially combined to produce an accurate cardiac perfusion image.
摘要:
According to one embodiment, a fastening device comprises an object having a through hole, and a fastener which fixes the object to a support by being screwed into a screw hole. The fastener includes a gripper and a stopper. The gripper is capable of protruding outside of the object from the through hole and getting into the through hole, and has an end surface on a side opposite to a male screw portion. The stopper is positioned between the male screw portion and the gripper. In a state in which the male screw portion is screwed into the screw hole, the end surface is positioned inside the through hole. In a state in which the male screw portion is removed from the screw hole, the gripper protrudes outside of the object from the through hole, and the stopper is caught in the object and holds the fastener to the object.
摘要:
A case for electronic equipment includes: a chassis that includes at least a bottom plate of an enclosure having a box-shaped outer shell; a stay that holds a motherboard perpendicularly with respect to the bottom plate; guide members that are provided with slots for guiding a substrate unit to be perpendicularly plugged into the motherboard by way of a connector, the guide members being disposed on both sides for guiding the substrate unit, and being configured to pull out integrally with the motherboard towards a plug-in side from which the substrate unit is plugged in; and a cover that includes at least a top cover side of the enclosure except for a portion corresponding to the bottom plate and a portion corresponding to the plug-in side.
摘要:
A magnetic resonance imaging system for interventional MR imaging involves operations to insert a device such as a catheter into an object. According to the system, a tip position of the catheter is detected, data indicative of moved loci of the catheter are produced from data indicative of the detected tip position, and the produced movement locus data are displayed. In addition, even when an operator changes the progress direction of the device such as a puncture needle, an imaging cross-section automatically tracks movements of the device. Appropriate preoperative planning is also provided.
摘要:
A physiologically active compound HS-1 having the following chemical structure is disclosed. This compound is prepared by culturing Chromobacterium violaceum, adding tryptophan and diethyldithiocarbamate (diethyldithiocarbamic acid) to the culture broth for reacting with the cells for producing HS-1 in the cells, and collecting the compound from the culture broth. This novel compound possesses antitumor and antimicrobial activity, and is effective as an antitumor agent or an antimicrobial agent. ##STR1##
摘要:
Black blood time to inversion (BBTI) tag-on and tag-off images acquired by magnetic resonance imaging (MRI) are analyzed to produce difference magnitude 3D images as a function of time (BBTI values) representing blood perfusion in a region of interest (ROI). Perfusion data of the ROI having values which are different for normal and abnormal myocardial tissues are displayed for plural slices of a 3D image and for plural BBTI values in a single display panel.
摘要:
While a general-purpose interface circuit and another general-purpose interface circuit are provided so as to transmit/receive data between a host appliance and a device appliance, when the general-purpose interface of the device appliance happens to hang up, a control section transmits a reset signal via a dedicated interface circuit. When a dedicated interface circuit provided on the side of the device appliance receives this reset signal and then outputs this received reset signal to the general-purpose interface circuit, the general-purpose interface circuit is reinitiated.