Abstract: A piezoelectric speaker (10) includes: a piezoelectric film (35); a fixing face (17) for fixing the piezoelectric film (35) to a support; and an interposed layer (40) disposed between the piezoelectric film (35) and the fixing face (17). The interposed layer (40) has a holding degree of 5×108 N/m3 or less.

Abstract: A whiteboard film system includes: a whiteboard film; a plurality of light-emitting devices to emit infrared light onto a surface of the whiteboard film at a viewer's side; and a plurality of photodetection devices to receive the infrared light emitted from the plurality of light-emitting devices, the plurality of photodetection devices being provided so as to at least partly oppose the plurality of light-emitting devices. A whiteboard film includes: a diffuse reflection layer to diffuse-reflect visible light; an absorptive polarizing layer having a first transmission axis that is parallel to a first direction; and a reflective polarizing layer being disposed between the diffuse reflection layer and absorptive polarizing layer and having a second transmission axis that is substantially parallel to the first direction.

Abstract: A writing board set includes a writing board and a writing utensil containing ink. The writing board reflects back, when unpolarized light is incident on its surface at a viewer's side, polarized light which is parallel to a first direction and which has a degree of polarization of 95% or more. Ld*, ad*, and bd* are values of L*, a*, and b* as obtained by irradiating the surface of the writing board with light that has been transmitted through a polarizing layer having a transmission axis which is orthogonal to the first direction, and measuring total reflectance through spectrophotometry. Li*, ai*, and bi* are values of L*, a*, and b* as obtained by irradiating the ink having been introduced onto a surface of a glass panel with unpolarized light, and measuring total reflectance through spectrophotometry. A color difference ?E*ab as defined by eq. (1) is 19 or less: ?E*ab[(Li*?Ld*)2+(ai*?ad*)2+(bi*?bd*)2]1/2??(1).

Abstract: A speaker (10) includes a radiation surface (15). The radiation surface (15) has a first region (15a), a second region (15b), and a third region (15c) between the first region (15a) and the second region (15b). When an axis passing through the third region (15c) and extending away from the radiation surface (15) is defined as a reference axis (10X), the speaker (10) forms a first wavefront (16a) propagating from the first region so as to approach the reference axis (10X) and a second wavefront (16b) propagating from the second region (15b) so as to approach the reference axis (10X).

Abstract: A piezoelectric speaker-forming laminate (10) includes: a piezoelectric film (35); a pressure-sensitive adhesive face (17); an interposed layer (40) being a porous body layer and/or a resin layer disposed between the piezoelectric film (35) and the pressure-sensitive adhesive face (17); and a release layer (20) joined to the pressure-sensitive adhesive face (17). The pressure-sensitive adhesive face (17) is disposed in such a manner that at least a portion of the piezoelectric film (35) overlaps the pressure-sensitive adhesive face (17) when the piezoelectric film (35) is viewed in plan. The piezoelectric film (35) and the interposed layer (40) are allowed to be fixed to a support (80) as a piezoelectric speaker or a portion of a piezoelectric speaker by sticking the pressure-sensitive adhesive face (17) from which the release layer (20) has been removed to the support (80).

Abstract: A piezoelectric speaker-forming laminate (10) includes: a piezoelectric film (35); a pressure-sensitive adhesive face (17); an interposed layer (40) being a porous body layer and/or a resin layer disposed between the piezoelectric film (35) and the pressure-sensitive adhesive face (17); and a release layer (20) joined to the pressure-sensitive adhesive face (17). The pressure-sensitive adhesive face (17) is disposed in such a manner that at least a portion of the piezoelectric film (35) overlaps the pressure-sensitive adhesive face (17) when the piezoelectric film (35) is viewed in plan. The piezoelectric film (35) and the interposed layer (40) are allowed to be fixed to a support (80) as a piezoelectric speaker or a portion of a piezoelectric speaker by sticking the pressure-sensitive adhesive face (17) from which the release layer (20) has been removed to the support (80).

Abstract: A piezoelectric speaker (10) includes: a piezoelectric film (35); a fixing face (17) for fixing the piezoelectric film (35) to a support; and an interposed layer (40) disposed between the piezoelectric film (35) and the fixing face (17). The interposed layer (40) has a holding degree of 5×108 N/m3 or less.

Abstract: A sound reducing system (500) includes at least one sound reducing speaker for radiating a sound wave for sound reduction. The at least one sound reducing speaker includes a piezoelectric speaker (10). The piezoelectric speaker (10) includes a piezoelectric film (35), a fixing face (17) in contact with a support supporting the piezoelectric speaker (35), and a film holding portion (55) disposed between the piezoelectric film (35) and the fixing face (17). (i) The film holding portion (55) includes a pressure-sensitive adhesive layer and the fixing face (17) is formed of a surface of the pressure-sensitive adhesive layer and/or (ii) the film holding portion (55) includes a porous body layer.

Abstract: A piezoelectric speaker (10) includes a piezoelectric film (35), a first joining layer (51), and an interposed layer (40). The piezoelectric film (35) includes a first electrode (61), a second electrode (62), and a piezoelectric body (30) sandwiched by the first electrode (61) and the second electrode (62). The first joining layer (51) is a layer having pressure-sensitive adhesiveness or adhesiveness. The interposed layer (40) is disposed between the piezoelectric film (35) and the first joining layer (51). Both principal surfaces of the piezoelectric film (35) vibrate up and down as a whole.

Abstract: The invention provides an agent for improving circadian rhythm comprising cells of lactic acid bacterium or treated product thereof as an active ingredient.

Abstract: Organic-inorganic composite particles that can be dispersed in a solvent and/or a resin as primary particles having an organic group on the surface of inorganic particles, the organic-inorganic composite particles having negative birefringence.

Abstract: A composition which can efficiently obtain an effect of decreasing or suppressing an increase in the neutral fat level is provided. Docosahexaenoic acid (DHA) and/or eicosapentaenoic acid (EPA) is used as an active ingredient of a composition for decreasing or suppressing an increase in the neutral fat level, and the timing of intake of the active ingredient is within a time for intake within 6 hours after arousal from sleep including the breakfast time essentially including the breakfast time.

Abstract: An impaired glucose tolerance ameliorative agent containing a peak component of partition chromatography of an gramineous plant seeds alcohol extract. The peak component preferably contains an alkylresorcinol (AR) mixture containing a plurality of alkylresorcinols (ARs). The AR mixture preferably contains (1) an AR of general formula (I) wherein R1 is a C15 saturated or unsaturated alkyl group, (2) an AR of formula (I) wherein R1 is a C17 saturated or unsaturated alkyl group, (3) an AR formula (I) wherein R1 is a C19 saturated or unsaturated alkyl group, (4) an AR of formula (I) wherein R1 is a C21 saturated or unsaturated alkyl group, (5) an AR of formula (I) wherein R1 is a C23 saturated or unsaturated alkyl group , and (6) an AR of formula (I) wherein R1 is a C25 saturated or unsaturated alkyl group. R1 is C15-C25 saturated or unsaturated alkyl. R2 is hydrogen or methyl.

Abstract: A thermally conductive sheet is a thermally conductive sheet 1 formed from a thermally conductive composition containing boron nitride particles 2 in a plate shape and a rubber component. The content ratio of the boron nitride particles 2 is 35 vol % or more and the thermal conductivity in a direction perpendicular to a plane direction PD of the thermally conductive sheet 1 is 4 W/m·K or more.

Abstract: The invention provides an agent for improving circadian rhythm comprising cells of lactic acid bacterium or treated product thereof as an active ingredient.

Abstract: A method for producing a thermally conductive sheet includes the steps of preparing a material component containing boron nitride particles in a plate shape and a polymer matrix, forming a long-length sheet from the material component with a calender, and pressing the long-length sheet.

Abstract: The present invention provides a peptide partially comprising an amino acid sequence of FGF-5 or FGF-5S (i.e., the alternatively spliced form of FGF-5), the peptide being capable of controlling physiological function(s) of FGF-5. A pharmaceutical composition containing the peptide of the invention as an active component may regulate the physiological function(s) of FGF-5 such as regulation of development or growth of a head or body hair, regulation of nutrition or function of a cranial nerve system, regulation of platelets, and/or promotion or inhibition of proliferation or differentiation of a vascular endothelial cell.