摘要:
A fluorescence detection apparatus for differentiating an object containing a fluorescent substance by detecting fluorescence emitted by the fluorescent substance, which apparatus includes: an excitation light source which emits ultraviolet light that excites a fluorescent substance; a light detector for detecting fluorescence; and an optical guiding system consisting essentially of a single glass block of an angular columnar shape having: an incidence face located on a side of the glass block, through which the ultraviolet light enters; a reflection and emission face constituted by an inclined face, from which the incident ultraviolet light reflects toward the object, and through which florescence emitted from the object passes toward the light detector; and a detection face at the bottom of the glass block facing the object, through which the ultraviolet light exits and hits the object, and through which florescence emitted from the object enters, thereby allowing for reduction in the size of the apparatus, easy positioning of the glass block, and minimizing the effects of object vibration.
摘要:
A process for continuously preparing rubber modified styrene resins from styrene monomers and acrylonitryle monomers in the presence of a rubbery polymer in accordance with a continuous mass and/or solution polymerization method by the use of serial polymerization device comprising two or more reactors; said process comprising(1) a first step of feeding a polymeric materials to the first reactor to carry out the polymerization of monomers in a condition where the rubbery polymer is not inverted to the dispersed phase, and a second step of adding a polymeric materials to second reactors to carry out the polymerization of the monomers and to thus invert the rubbery polymer to the dispersed phase,(2) a ratio of the added materials to the materials used in the first step being in the range of from 10 to 220% by weight,whereby impact resistance and surface gloss can be remarkably improved.
摘要:
A centrifugal blower wheel is provided with forward-curved multi-blades comprising a pair of end rings, a plurality of blades and a disk. By separating the blades into "vane members" which assume the function of a fluid device and "vane attachment members" which assume the function of a high speed rotating device, there is a greater degree of freedom of design, so optimum materials and shapes can be assigned to these different functions. The end rings, vane attachment members and disk are therefore constructed of metal and provided with beads so as to give a highly rigid structure, while the vane members are constructed of non-metal. This makes it possible to provide a blower wheel which is more lightweight and quieter in operation than a conventional blower wheel.
摘要:
An optical sensor has an optical block including a substrate, a light-emitting element formed on the substrate, and a light-receiving element formed on the substrate by using an adjusting member for arranging side-by-side with the light-emitting element, a light-transmitting member located between the optical block and an object, and connecting terminal optically connected to the light-emitting element and the light-receiving element. It is preferable that the light-transmitting member is separated into a plurality of light transmitting members in correspondence with areas separated on the object. There is also provided an optical sensor having a light-transmitting member, a plurality of incident optical fibers, optically coupled with the light-transmitting member, for transmitting light emitted from a light-emitting element to the light-transmitting member, a plurality of outgoing optical fibers, optically coupled with the light-transmitting member, for transmitting light passed through the light-transmitting member after being reflected on an object to the light-receiving element, and a housing for integrally housing the light-transmitting member, the incident optical fiber, and the outgoing optical fibers.
摘要:
A housing arrangement for a butterfly valve including an annular valve housing, a valve rod rotatably and axially inserted through the valve housing, the valve rod crossing at right angles with a fluid passage, and a valve member in a substantially disk form, the valve member sliding tightly on the inner surface of the valve housing as the valve rod rotates, and the valve housing is built up of a valve housing body which includes bearing bushes and is of a given profile in section and a valve rod supporting tube, the valve housing body being obtained by expanding and turning over a metal tube material in the outward direction until its both end faces are brought into contact with each other at substantially its central portion and welding the faces of contact together.
摘要:
A temperature sensing element includes a thermistor composed of Si-base ceramics and a pair of metal electrodes bonded onto the surfaces of the thermistor. The metal electrodes contain Cr and a metal element α having a Si diffusion coefficient higher than that of Cr. A diffusion layer is formed in a bonding interface between the thermistor and each metal electrode, the diffusion layer including a silicide of the metal element α in a crystal grain boundary of the Si-base ceramics. A temperature sensor including the diffusion layers is provided. Owing to the diffusion layers, the temperature sensor ensures heat resistance and bonding reliability and enables temperature detection with high accuracy in a temperature range, in particular, of from −50° C. to 1050° C.
摘要:
Provided is a hinge that can be manufactured easily in a short time. The hinge rotatably connects a first member and a second member, and is provided with two brackets that are rotatable against each other and mounted to the first member and the second member, respectively, and a friction-torque-generating member that generates friction torque by directly or indirectly pressing the two brackets against each other. A first of the two brackets is configured from an integral structure that includes a shaft part that passes through the second bracket and supports the rotation, and a mounting part that is mounted to the first member or the second member, with the shaft part and the mounting part being produced from a plate material.
摘要:
A connector includes a first and a second terminals and a fixing member that fixes the first and the second terminals by covering periphery thereof in a state where the first and the second terminals are aligned in the direction extending into the rod-shape and overlap with each other in a direction perpendicular to the direction in which the first and the second terminals are aligned, wherein a cut-out portion of the first terminal faces a peripheral portion or a cut-out portion of the second terminal in the overlapping state, and at least parts of outer edges of a facing part have a same shape on the section along the direction perpendicular to the direction extending into the rod-shape.