摘要:
In a disk array apparatus, by taking note of a first sound of a specific frequency which is a noise element of original sounds generated from a fan, a second sound whose phase is inverted to that of the first sound is generated by a structure of a cooling air flow path passing through the fan, and the second sound is synthesized with the first sound on the cooling air flow path, thereby reducing the noise. For example, an exhaust duct is located on a fan unit in an upper part of the apparatus, two flow paths extending to an exhaust port are formed in an internal structure of the exhaust duct, and the two flow paths are designed so that the difference in the flow path length therebetween becomes equivalent to half wavelength of the specific frequency.
摘要:
A method and a structure for joining members are provided which are suited for reinforcement of a shape.An auxiliary member 7 is inserted into respective holes 9a and 9b of first and second portions 8a and 8b of a main member 6 such that tip and base ends of the auxiliary member 7 are in the holes 9b and 9a of the second and first portions 8b and 8a, respectively. A joining tool 5 is pushed, while rotated, on the tip end of the auxiliary member 7 to soften the portion of the auxiliary member and the second portion 8b of the main member 6 due to frictional heat and plastic flow. Then, the joining tool 5 is released from the main member 6 to allow the second portion 8b and the plastic flow portion of the auxiliary member 7 to solidify. Further, the joining tool 5 is pushed, while rotated, on the base end of the auxiliary member 7 to soften the portion of the auxiliary member and the first portion 8a of the main member 6 due to frictional heat and plastic flow. Then, the joining tool 5 is released from the main member 6 to allow the first portion 8a and the plastic flow portion of the auxiliary member 7 to solidfy.
摘要:
This invention relates to novel processes for the preparation of compounds of the formula [1], wherein R1, R2, R3 and R4 are as defined in the claims and description as well as pharmaceutically acceptable salts thereof. The compounds of the formula [1] are hexacyclic compounds having potent anti-tumor activity.
摘要:
The receive sensitivity of an ultrasound array transducer structured with a diaphragm electro-acoustic transducer (101) being a basic unit is affected by change in a charge amount with elapsed time due to leakage or the like, which causes drift of the primary beam sensitivity, degradation in the acoustic SN ratio due to a rise in the acoustic noise level, and degradation in the directivity of an ultrasound beam. To addressing this problem, a charge controller (charge monitor 211) is provided to control charge in an electro-acoustic transducer (101). A charge monitoring section (102) monitors the change in the charge amount. When change in the charge amount is small, transmit sensitivity or receive sensitivity is calibrated by a controller (104) by, for example, multiplying a receive signal by a calibration coefficient corresponding to the change amount. Further, when the change in the charge amount is large, for example, charges can be re-emitted from a charge emitter (103). The series of operations is controlled by the controller (104), and thus sensitivity variation caused by difference in the changes with elapsed time, particularly between the plural transducers, is calibrated.
摘要:
A method for manufacturing a semiconductor device includes the steps of: forming a first dielectric film on a substrate; etching the first dielectric film in a plug forming region to form a first via hole; forming a first plug electrode in the first via hole; forming a conductive film on the first dielectric film where the first plug electrode is formed; selectively etching the conductive film to form a local wiring on the first plug electrode and to form a pad layer on the first dielectric film in a specified region; forming a second dielectric film on the first dielectric film, thereby covering the local wiring and the pad layer; selectively etching the second dielectric film, thereby forming a second via hole in the second dielectric film with the local wiring as a bottom surface, and an opening section in the second dielectric film with the pad layer as a bottom surface; forming a metal film on the second dielectric film, thereby embedding the second via hole and the opening section; and applying a CMP processing to the metal film to remove the metal film on the second dielectric film, thereby forming a second plug electrode in the second via hole and forming an alignment mark on the pad layer.
摘要:
This invention relates to novel processes for the preparation of compounds of the formula [1], wherein R1, R2, R3 and R4 are as defined in the claims and description as well as pharmaceutically acceptable salts thereof. The compounds of the formula [1] are hexacyclic compounds having potent anti-tumor activity.
摘要:
In a first mode, a video signal processing apparatus records a video signal subjected to a first image processing by a first image processing unit on a first recording medium through the first recording unit. In a second mode, the video signal processing apparatus records a video signal subjected to a second image processing by a second image processing unit on a second recording medium through the second recording unit. In a case where a residual quantity of the second recording medium is smaller than a set value, the video signal processing apparatus records the video signal subjected to the second image processing by the second image processing unit on the first recording medium through the first recording unit.
摘要:
The object of the invention is to provide a disk array system and electronic apparatus capable of both excellent cooling of heat generating members and reduction of noise from the apparatus. A disk array system accommodates a plurality of disk drives 2 and has a controller 6 for controlling the disk drives 2. A refrigeration cycle system is formed with a compressor 10, a radiator 12, an expansion valve 9 and a cold plate 7. The controller 6 is cooled by the refrigeration cycle system. Two-phase refrigerant coming out from the expansion valve 9 collides with a heat receiving surface of the cold plate 7.
摘要:
In the manufacturing technology of an integrated MEMS in which a semiconductor integrated circuit (CMOS or the like) and a micro machine are monolithically integrated on a semiconductor substrate, a technology capable of manufacturing the integrated MEMS without using a special process different from the normal manufacturing technology of a semiconductor integrated circuit is provided. A MEMS structure is formed together with an integrated circuit by using the CMOS integrated circuit process. For example, when forming an acceleration sensor, a structure composed of a movable mass, an elastic beam and a fixed beam is formed by using the CMOS interconnect technology. Thereafter, an interlayer dielectric and the like are etched by using the CMOS process to form a cavity. Then, fine holes used in the etching are sealed with a dielectric.
摘要:
An alignment mark for a semiconductor device is provided. The alignment mark defines a plane pattern and includes a conductive layer embedded in a recessed section provided in an insulation layer, and an oxidation barrier layer provided on the conductive layer, wherein an area occupancy ratio of the recessed section in the plane pattern is 5% or greater.