Abstract: An object of the present invention is to provide ultrafine fibrous cellulose capable of exhibiting excellent coating suitability when added to paint. The present invention relates to fibrous cellulose having a fiber width of 1,000 nm or less, in which, when the fibrous cellulose is dispersed in water to form a dispersion liquid having a viscosity of 2,500 mPa·s at 23° C., and the dispersion liquid is stirred under predetermined stirring conditions, a viscosity change rate falls within ±50%, calculated by the following formula: viscosity change rate (%)=(viscosity after stirring?viscosity before stirring)/viscosity before stirring×100.

Abstract: A piezoelectric element includes a vibration portion, a holding portion, excitation electrodes, mounted electrodes, and wiring electrodes. A vibration main surface and a holding main surface are on the same plane. A holding main surface includes a fixing portion configured to be in contact with an element mounting member. The mounted electrodes are located side by side on the fixing portion. An inner side edge of the mounted electrode and an inner side edge of the wiring electrode are connected in a straight line. An inner side edge of the mounted electrode and an inner side edge of the wiring electrode are connected in a straight line.

Abstract: Provided is a heat-curable silicone resin sheet that is able to easily uniformly disperse phosphors on an LED element surface, a method of producing a light emitting device utilizing the same and an encapsulated light emitting semiconductor device obtained by the method utilizing the same. The heat-curable silicone resin sheet includes at least the two layers of a layer 1 including a heat-curable silicone resin composition containing phosphors that is in a plastic solid state or a semi-solid state at room temperature, and a layer 2 including a transparent or a semi-transparent heat-curable silicone resin composition that is in a plastic solid state or a semi-solid state at room temperature.

Abstract: The purpose of the present invention is to provide an isocyanuric ring-containing organopolysiloxane which can provide a cured product which can exploit the properties of a hydrosilylation (addition reaction), and is suitable for use in an encapsulating materials for an optical semiconductor. Thus, the present invention provides an organopolysiloxane having at least one isocyanuric ring in a molecule and vinyl siloxy groups at both terminals, and represented by the following formula (1): wherein X is, independently of each other, a monovalent organic group which does not have an unsaturated bond, R1 and R2 are, independently of each other, a methyl group or a phenyl group, and P is an integer of from 1 to 30.

Abstract: The purpose of the present invention is to provide an isocyanuric ring-containing organopolysiloxane which can provide a cured product which can exploit the properties of a hydrosilylation (addition reaction), and is suitable for use in an encapsulating materials for an optical semiconductor. Thus, the present invention provides an organopolysiloxane having at least one isocyanuric ring in a molecule and vinyl siloxy groups at both terminals, and represented by the following formula (1): wherein X is, independently of each other, a monovalent organic group which does not have an unsaturated bond, R1 and R2 are, independently of each other, a methyl group or a phenyl group, and P is an integer of from 1 to 30.