Abstract: A photoelectric sensor includes the following components. A disturbance detection unit detects a disturbance by comparing a light reception result obtained by a light receiver with a first threshold and with a second threshold for a predetermined period in a state where no light is transmitted by a light transmitter. The second threshold takes a value of a sign opposite to that of the first threshold relative to a no-signal state. A waiting unit waits for the light reception result obtained by the light receiver to become within a range from the first threshold to the second threshold upon detection of a disturbance. A disturbance type determination unit causes detection of a disturbance to be performed again after the waiting. A light transmission instruction unit instructs the light transmitter to transmit light when no disturbance is detected for a predetermined period.

Abstract: A photoelectric sensor includes the following components. A disturbance detection unit detects a disturbance by comparing a light reception result obtained by a light receiver with a first threshold and with a second threshold for a predetermined period in a state where no light is transmitted by a light transmitter. The second threshold takes a value of a sign opposite to that of the first threshold relative to a no-signal state. A waiting unit waits for the light reception result obtained by the light receiver to become within a range from the first threshold to the second threshold upon detection of a disturbance. A disturbance type determination unit causes detection of a disturbance to be performed again after the waiting. A light transmission instruction unit instructs the light transmitter to transmit light when no disturbance is detected for a predetermined period.

Abstract: A method for anticipating sensitivity to a medicine for osteoporosis is provided which is characterized by analyzing respective genetic polymorphisms of a vitamin D receptor gene, an estrogen receptor gene, and an apolipoprotein E gene from a genome DNA contained in a sample obtained from a human, and anticipating, based on the analyzed combination of the genetic polymorphisms, that the sample is derived from an individual who shows a specific priority to sensitivities to a plurality of remedies for osteoporosis. A reagent for simultaneously detecting genetic polymorphisms is also provided which contains amplification primers and/or detection probes specific to respective genes of the vitamin D receptor gene, apolipoprotein E gene, and estrogen receptor gene. Further, a method for simultaneously detecting these genes, and a method for selecting remedies for bone disease based on the genetic polymorphisms are provided.