摘要:
An amine, such as a triethanol amine or ethylenediamine is added to an alkaline electroless gold plating solution comprising a gold salt and a boron-based reducing agent to deposit a gold film having good appearance and high throwing power on a workpiece at a high deposition rate.
摘要:
The present invention provides a polyvinyl acetal-based resin which has a high elastic modulus, is excellent in solubility to an alcoholic solvent, and gives a highly transparent alcohol solution. The polyvinyl acetal-based resin is obtained by acetalizing a polyvinyl alcohol-based resin (A) which has 0.1 to 1.5% by mol of a 1,2-diol structural unit represented by the following general formula (1) and a degree of saponification of 98.5% by mol or more: wherein R1, R2, and R3 each independently represents a hydrogen atom or an organic group; X represents a single bond or a bonding chain; and R4, R5, and R6 each independently represents a hydrogen atom or an organic group.
摘要:
A projector apparatus which may include a light-emitting tube emitting illumination light, a reflector arranged to cover at least a portion of periphery of the light-emitting tube and formed so as to reflect the illumination light emitted by the light-emitting tube in a forward direction, a cooling fan disposed beside the reflector for blowing cooling air on the light-emitting tube, and an apparatus housing containing the reflector and the cooling fan. The reflector may have an intake port facing an air discharging port of the cooling fan and two discharging ports opening in direction perpendicular to or substantially perpendicular to the intake port. The two discharging ports of the reflector may have a combined discharge area which is twice or substantially twice an intake area of the intake port of the reflector.
摘要:
A wireless communication device (10) comprising a first communication portion (36a) that connects to a wide-area wireless communication network; a second communication portion (36b) that connects to a narrow-area wireless communication network; and processing portions (32, 34) that, during communication with a wide-area wireless communication network via the first communication portion (36a), upon detection of a communication area boundary vicinity of the wide-area wireless communication network when communication is performed, perform processing so that the second communication portion (36c) continues performing communication that the first communication portion (36a) is performing.
摘要:
A projector includes: alight source; a light modulation device configured to modulate light emitted from the light source according to image information; a projection lens configured to project the light modulated by the light modulation device; a holding unit that holds the projection lens; an external housing that accommodates the projection lens and the holding unit; and a clamping portion that projects from the inner surface of the external housing and clamps the projection lens or the holding unit in a direction substantially perpendicular to the optical axis of the projection lens.
摘要:
This invention provides an aqueous emulsion, which comprises a polyvinyl alcohol-based resin, as the dispersant, and a polymer comprising a structural unit derived from an ethylenically unsaturated monomer, as the dispersoid, from which a film having excellent transparency can be obtained, and which is excellent in mechanical stability, chemical stability, freezing stability and storage stability, and a method for producing the same, and relates to an aqueous emulsion which has an average particle size of the dispersoid of from 100 to 450 μm and an apparent grafting efficiency of the polyvinyl alcohol-based resin of from 65 to 75% based on the dispersoid, and a method for producing the same.
摘要:
A steam turbine blade includes a coating film formed at least a portion of a surface of the steam turbine blade, the coating film containing a ceramic matrix and nanosheet particles dispersed in the ceramic matrix. The steam turbine blade is employed as one of stator blades or one of rotor blades in a steam turbine. The steam turbine includes a turbine rotor, the rotor blades implanted in the turbine rotor, the stator blades provided in an upstream side of the corresponding rotor blades, and a turbine casing supporting the stator blades and accommodating turbine rotor, the rotor blades and the stator blades. The steam turbine is also configured such that the rotor blades are paired with the corresponding stator blades to form turbine stages arranged in an axial direction of the turbine rotor, thereby forming steam paths.
摘要:
An object of the present invention is to provide a new acetoacetic ester group-containing polyvinyl alcohol-based resin that contains less amount of water-insoluble matter and is excellent in transparency and viscosity stability when converted into an aqueous solution, and that realizes excellent water resistance by combined use of a crosslinking agent. The invention provides an acetoacetic ester group-containing polyvinyl alcohol-based resin containing a structural unit represented by the general formula (1): wherein at least one of R1 and R2 represents an acetoacetyl group, R3, R4, R5, R6, R7 and R8 each independently represents an arbitrary substituent, and X represents a single bond or an arbitrary bonding chain.
摘要:
A membrane treatment apparatus includes a filtration membrane 10 filtering raw water existing in an external environment 100 by applying pressure thereto and a treated water outlet 11 from which treated water collected after filtration by the filtration membrane 10 is taken, and is provided with a filter cloth 12 placed and fixed outside the filtration membrane 10 with a predetermined space left between the filter cloth and the filtration membrane. Preferably, the filter cloth 12 is provided in such a way as to cover an outer circumferential side and a bottom of the filtration membrane 10, and the filter cloth 12 is provided in such a way as to cover the outer circumferential side of the filtration membrane 10 with the bottom thereof uncovered.