Abstract: A seating state detection device includes an acquisition unit configured to acquire a detection signal group in a predetermined period that is output as a result of transmission and reception of waves by a radio wave sensor mounted on a vehicle, a signal extraction unit configured to extract specific-intensity signals in a predetermined reflection intensity range from the detection signal group, and a determination unit configured to determine whether an occupant in the vehicle is in a first riding state in which the occupant is directly seated on a seat or in a second riding state in which the occupant is seated in an infant auxiliary device, based on a distribution mode of the specific-intensity signals.

Abstract: Aromatic compositions which comprise perfumes included in cyclodextrins whose inclusion ability depends on a pH of a solution containing the perfumes and cyclodextrins and pH-adjusting substances whereby a release rate of the perfume can be controlled, are described. Aromatic compositions are also disclosed, which comprise perfumes coated or covered with materials whose solubility depends on the pH of a solution containing the coated perfumes, and a pH-adjusting substance to change the pH as desired. Methods for controlling the release rate of the perfumes are also described.

Abstract: Aromatic compositions which comprise perfumes included in cyclodextrins whose inclusion ability depends on a pH of a solution containing the perfumes and cyclodextrins and pH-adjusting substances whereby a release rate of the perfume can be controlled, are described. Aromatic compositions are also disclosed, which comprise perfumes coated or covered with materials whose solubility depends on the pH of a solution containing the coated perfumes, and a pH-adjusting substance to change the pH as desired. Methods for controlling the release rate of the perfumes are also described.

Abstract: Biotin- or 2,4-dinitrophenyl-oligodeoxyribonucleotide derivative represented by the formula shown below and its preparation method is disclosed: ##STR1## wherein: R is ##STR2## m and n are each 0 or a natural number; R.sup.1 is a straight or branched hydrocarbon residue; and B is a base constituting the nucleotide (in which when a plural number of B exist, they may be either identical or different). This compound is useful for use as a nonradioactive affinity probe for nucleic acid or a primer.

Abstract: An oligonucleotide derivative having an amino group protected with an eliminatable group bonded through a phosphate group and a spacer with an appropriate length to the 5'-end of an oligonucleotide protected suitably at the 3'-hydroxyl group and the base moiety of the nucleotide, and an immobilized oligonucleotide derivative having a Sepharose carrier bonded to the amino group in place of said protective group are disclosed. Methods for production of these derivatives are also disclosed.

Abstract: An oligonucleotide derivative having an amino group protected with an eliminatable group bonded through a phosphate group and a spacer with an appropriate length to the 5'-end of an oligonucleotide protected suitably at the 3'-hydroxyl group and the base moiety of the nucleotide, and an immobilized oligonucleotide derivative having a Sepharose carrier bonded to the amino group in place of said protective group are disclosed. Methods for production of these derivatives are also disclosed.

Abstract: An oligonucleotide derivative having an amino group protected with an eliminatable group bonded through a phosphate group and a spacer with an appropriate length to the 5'-end of an oligonucleotide protected suitably at the 3'-hydroxyl group and the base moiety of the nucleotide, and an immobilized oligonucleotide derivative having a Sepharose carrier bonded to the amino group in place of said protective group are disclosed. Methods for production of these derivatives are also disclosed.

Abstract: Biotin- or 2,4-dinitrophenyl-oligodeoxyribonucleotide derivatve represented by the formula shown below and its preparation method is disclosed: ##STR1## wherein: R is ##STR2## m and n are each 0 or a natural number; R.sup.1 is a straight or branched hydrocarbon residue; and B is a base constituting the nucleotide (in which when a plural number of B exist, they may be either identical or different). This compound is useful for use as a nonradioactive affinity probe for nucleic acid or a primer.