Abstract: Provided is a test method comprising: preparing a plurality of groups for setting, each of which has a plurality of semiconductor devices for setting, and assigning an inspection voltage to each of the respective plurality of groups for setting; performing first testing by applying the assigned inspection voltage to the semiconductor devices for setting, and testing, at a first temperature, the plurality of semiconductor devices for setting included in each of the plurality of groups for setting; performing second testing by testing, at a second temperature different from the first temperature, a semiconductor device for setting having been determined as being non-defective and by detecting a breakdown voltage at which the semiconductor device for setting is broken; acquiring a relationship between the inspection voltage and the breakdown voltage; and setting an applied voltage used when testing a semiconductor device under test at the first temperature, based on the acquired relationship.

Abstract: Provided is an oral composition containing particles that have properties to seal dentinal tubules and excellent adhesion properties in dentinal tubules. Specifically, provided is an oral composition containing hydroxyapatite particles, wherein the hydroxyapatite particles have a ratio of a diffraction peak intensity around 2?=32° to a diffraction peak intensity around 2?=26° of 0.8 to 1.6 in an x-ray powder diffraction pattern as measured with CuK? characteristic X-rays.

Abstract: Provided is an oral composition containing particles that have properties to seal dentinal tubules and excellent adhesion properties in dentinal tubules. Specifically, provided is an oral composition containing hydroxyapatite particles, wherein the hydroxyapatite particles have a ratio of a diffraction peak intensity around 2?=32° to a diffraction peak intensity around 2?=26° of 0.8 to 1.6 in an x-ray powder diffraction pattern as measured with CuK? characteristic X-rays.

Abstract: Provided is an oral composition that has excellent stability over time although a hydrocarbon oil is contained therein. Specifically provided is an oral composition comprising a hydrocarbon oil, a polyhydric alcohol, and a surfactant, the oral composition comprising (1) glycerol, and a polyglycerol fatty acid ester and/or an alkyl glucoside, (ii) propanediol, and a polyoxyethylene hardened castor oil and/or a polyoxyethylene hardened castor oil fatty acid ester, (iii) butylene glycol, and a polyoxyethylene alkyl ether and/or a polyoxyethylene hardened castor oil fatty acid ester, or (iv) polyethylene glycol and a polyoxyethylene hardened castor oil fatty acid ester.