摘要:
A package is formed by covering a circuit board with a thermoplastice film. The cylindrical or sheet-like thermoplastic film is decompressed and used to cover the circuit board to protect the board and components mounted on the board.
摘要:
A component collective includes component holders respectively holding components therein and connected to one another in the form of a tape carrier. Each of holders is provided with a cavity to accommodate the component, a lid for shutting an opening of the cavity, and a keeping device for keeping the lid at a closed position. An apparatus for feeding the component collective includes a device for transferring the component collective, a device for forcibly opening the lid means of the component holder transferred to a predetermined position, and a device for forcibly closing the lid of the component holder after a component is removed from the cavity.
摘要:
A component carrier assembly includes component holders each for holding a component therein and connected to one another in a form of a tape carrier. Each holder is provided with a cavity to accommodate the component, a closure for shutting an opening of the cavity, and a device for securing the lid structure in a closed position. An apparatus for feeding the component carrier includes a device for transferring the component carrier, a device for forcibly opening a closure of a component holder transferred to a predetermined position, and a device for forcibly closing the closure of the component holder after a component is removed from the cavity.
摘要:
It is an object of the present invention to provide a thermally disappearing resin particle and a thermally disappearing hollow resin particle which can be decomposed at a low temperature in a short time and do not cause deformation or cracking of a sintered body to be obtained in the case of using as a binder for a ceramic or a lightening material; a method of producing the thermally disappearing hollow resin particle; a ceramic composition which can be degreased and fired at a low temperature in a short time and gives a molded body with a high porosity without deformation or cracking even in the case a large quantity of a pore-forming material is used; and a method of producing a porous ceramic filter.The present invention is directed to a thermally disappearing resin particle, which contains a polyoxyalkylene resin, and 10% by weight or more of the whole particle disappearing within an hour by heating at a prescribed temperature in a range from 100 to 300° C.
摘要:
A separator includes an electrically conductive flat plate and two electrically conductive channel plates superposed on each other with the electrically conductive flat plate interposed therebetween. The separator includes a plurality of manifolds for passing a reaction fluid to an adjacent cell are provided in the electrically conductive flat plate, and a plurality of zigzag or straight through-channels for permitting the flowing of the reaction fluid from the manifolds are formed in each of the two channel plates. The separator includes the through-channels in any one of the two electrically conductive channel plates disposed so that they are partially overlapped with the manifolds in the electrically conductive flat plate, and the through-channels in the other electrically conductive channel plate are formed to be partially larger than the contour of the electrically conductive flat plate.
摘要:
A part of cell stack portions constituting a part of a fuel cell stack is used as a voltage detection portion, the size of a frequency component belonging to a predetermined specific frequency range is extracted from a voltage signal detected and the existence/absence of abnormality of a fuel cell system is diagnosed on the basis of the frequency component extracted.
摘要:
The present invention provides a separator for a fuel cell constructed using a metallic pressed plate, in which a gas channel from a manifold to an electrode surface is formed simply, and a good sealing characteristic is realized. The separator is comprised of a metallic pressed plate, a resinous frame member, and a sealing frame having a sealing material integrated therewith, and a channel for introducing a gas from the manifold to an electrode surface is formed by a metallic surface, the sealing material and a resinous surface. An elastomer such as a rubber is used for the sealing material. Thus, the gas channel from the manifold to the electrode surface can be formed simply, and an excellent sealing characteristic to the gas and water is obtained.
摘要:
A substrate support jig, for removably holding a substrate when mounting electronic components on the substrate, includes a base member having a first surface and a second surface facing and substantially parallel to each other; and an adhesive layer with a predetermined shape and a predetermined thickness formed on the first surface side by applying an adhesive material with a predetermined unit tackiness to an adhesive region. In the adhesive region is formed a land section such that a surface of the land section protrudes from a surface of the adhesive layer by a predetermined amount. The tackiness between the adhesive material and the base member is lower than the tackiness between the adhesive material and the substrate.
摘要:
An underwater laser processing system has a laser torch; a laser torch driving mechanism for changing a laser emission position of the laser torch; and a chamber with one end opened to an external environment, which contains the laser torch; wherein a partitioning wall for preventing permeation of water is provided between a free end of the chamber and the laser torch. The system is used for detecting a sensitized portion and repairing it at one time using a sensitization detecting arrangement. Moreover, it is used for forming an alloying layer by melting a sprayed coating film, and for forming a new surface layer by emitting a laser beam through a solution containing a metal component.
摘要:
The present invention concerns a process for producing nucleosides by carrying out the reaction of a base donor, a saccharide residue donor and a phosphoric acid donor by the use of an enzyme preparation containing nucleoside phosphorylase, thereby forming an N-glycosidic bond between the base moiety of the base donor and the saccharide moiety of the saccharide residue donor, which comprises using, as the enzyme preparation containing nucleoside phosphorylase, a preparation derived from the cells of one or more kinds of microorganisms belonging to thermophiles of the genus Bacillus and having high nucleoside phosphorylase activity per unit cell weight.