Abstract: A method and apparatus for analyzing carbon isotope 14C is provided. A carbon isotope analyzer including an isotopic carbon dioxide generator to generate isotopic carbon dioxide from a carbon isotope; a spectrometer including an optical resonator having a pair of mirrors, and a photodetector to determine the intensity of light transmitted from the optical resonator; and a light generator including a light source, a first optical fiber to transmit a light beam from the light source, a second optical fiber for wavelength conversion, the second optical fiber branching from the first optical fiber at a point and combining with the first optical fiber at another point downstream of the branching point, and a non-linear optical crystal to generate light having the absorption wavelength of the isotopic carbon dioxide on the basis of the difference in frequency between light beams transmitted through the optical crystal.

Abstract: A carbon isotope analysis device including a carbon dioxide isotope generator provided with a combustion unit that generates gas containing carbon dioxide isotope from carbon isotope, and a carbon dioxide isotope purifying unit; a spectrometer including an optical resonator having a pair of mirrors and a photodetector that determines intensity of light transmitted from the optical resonator; and a light generator including a light source, a splitter that splits light from the light source, a focusing lens that focuses light from the splitter, and a mirror that reflects light from the focusing lens and sends the light back to the light source via the focusing lens and the splitter. A carbon isotope analysis device improved in stability of a light source and a carbon isotope analysis method by use of the analysis device are provided.

Abstract: A carbon isotope analyzer 1 includes a carbon dioxide isotope generator 40 that includes a combustion unit that generates gas containing carbon dioxide isotope from carbon isotope, and a carbon dioxide isotope purifying unit; a spectrometer 10 including an optical resonator 11 having a pair of mirrors 12, and a photodetector 15 that determines the intensity of light transmitted from the optical resonator 11; and a light generator 20 including a light source 23, a first optical fiber 21 to transmit a light beam from the light source 23, a second optical fiber 22 for wavelength conversion, the second optical fiber 22 splitting from the first optical fiber 21 at a point and combining with the first optical fiber 21 at another point downstream of the splitting point, and a non-linear optical crystal 25 that generates light having the absorption wavelength of the carbon dioxide isotope on the basis of the difference in frequency between light beams transmitted through the optical crystal 25.

Abstract: A method and apparatus for analyzing carbon isotope 14C is provided. A carbon isotope analyzer including an isotopic carbon dioxide generator to generate isotopic carbon dioxide from a carbon isotope; a spectrometer including an optical resonator having a pair of mirrors, and a photodetector to determine the intensity of light transmitted from the optical resonator; and a light generator including a light source, a first optical fiber to transmit a light beam from the light source, a second optical fiber for wavelength conversion, the second optical fiber branching from the first optical fiber at a point and combining with the first optical fiber at another point downstream of the branching point, and a non-linear optical crystal to generate light having the absorption wavelength of the isotopic carbon dioxide on the basis of the difference in frequency between light beams transmitted through the optical crystal.

Abstract: A method and apparatus for analyzing carbon isotope 14C is provided. A carbon isotope analyzer including an isotopic carbon dioxide generator to generate isotopic carbon dioxide from a carbon isotope; a spectrometer including an optical resonator having a pair of mirrors, and a photodetector to determine the intensity of light transmitted from the optical resonator; and a light generator including a light source, a first optical fiber to transmit a light beam from the light source, a second optical fiber for wavelength conversion, the second optical fiber branching from the first optical fiber at a point and combining with the first optical fiber at another point downstream of the branching point, and a non-linear optical crystal to generate light having the absorption wavelength of the isotopic carbon dioxide on the basis of the difference in frequency between light beams transmitted through the optical crystal.

Abstract: A carbon isotope analyzer 1 includes a carbon dioxide isotope generator 40 that includes a combustion unit that generates gas containing carbon dioxide isotope from carbon isotope, and a carbon dioxide isotope purifying unit; a spectrometer 10 including an optical resonator 11 having a pair of mirrors 12, and a photodetector 15 that determines the intensity of light transmitted from the optical resonator 11; and a light generator 20 including a light source 23, a first optical fiber 21 to transmit a light beam from the light source 23, a second optical fiber 22 for wavelength conversion, the second optical fiber 22 splitting from the first optical fiber 21 at a point and combining with the first optical fiber 21 at another point downstream of the splitting point, and a non-linear optical crystal 25 that generates light having the absorption wavelength of the carbon dioxide isotope on the basis of the difference in frequency between light beams transmitted through the optical crystal 25.

Abstract: A problem to be solved by the present invention is to provide an acylcarnitine composition easy to handle in a solution state and having long-term storage stability. The problem is solved by an acylcarnitine composition characterized by having at least one or more acylcarnitines dissolved in an organic solvent containing an organic acid.

Abstract: Provided are a simple and convenient apparatus capable of analyzing carbon isotope 14C and a method of analyzing the carbon isotope.

Abstract: The present invention provides a chaperonin-target protein complex and a method of producing the same, and a method of stabilizing the target protein, a method of immobilizing the target protein, a method of analyzing the structure of the target protein, a sustained-release formulation, and a method of producing an antibody against the target protein. The chaperonin-target protein complex in the present invention includes a fusion protein having a chaperonin subunit and an affinity tag linked to the chaperonin subunit via a peptide bond and a target protein for which the affinity tag shows a specific affinity, wherein the target protein is bound to the affinity tag by means of the specific affinity, thereby forming a chaperonin ring structure consisting of a plurality of chaperonin subunits. The chaperonin-target protein in the present invention stabilizes the target protein and surely immobilize on a carrier without causing any change in its stereostructure.

Abstract: It is intended to provide an immunogen and a composition for immunological use by which a sufficient immune response is induced even by an antigen protein which has been considered unavailable to induce any effective immune responses for various reasons, and a method of producing an antibody using the same. The immunogen containing a fusion protein including the full-length or a part of a desired antigen protein and a folding factor or its subunit linked thereto via at least one peptide bond. Owing to the function of the folding factor, the antigen protein contained in the fusion protein is obtained as a soluble protein having a correct stereostructure. It is also possible to protect the antigen protein and from rapid decomposition in the blood of an animal having been inoculated therewith. The immunogen induces a higher immune response for an animal than an antigen protein alone. Examples of the folding factor include chaperonins and PPIases.

Abstract: It is an object of the present invention to provide an expression vector, a host, a fused protein, a protein, a process for producing a fused protein, and a process for producing a protein, which can prevent formation of an unactive abnormal protein at production of a recombinant protein, and can produce a desired protein as a natural type, that is, a soluble type at a large amount and effectively. That is, the present invention is an expression vector, which comprises: (a) a first coding region encoding a polypeptide having molecular chaperone activity, and (b) a region having at least one restriction enzyme site in which a second coding region encoding a protein can be inserted.

Abstract: An extension control signal for a vertical blanking interval (VBI) rises at a timing delayed from the last key signal before the VBI by 64 .mu.sec plus the time difference between the key signal and horizontal synchronizing signal section, and falls at a timing delayed from the first key signal after lack of the key signal detection by an extension period of the horizontal synchronizing signal section plus the above time difference.

Abstract: A method of scrambling a television signal is provided in which, during a horizontal blanking interval and during a vertical blanking interval, a video signal is compressed and a key signal containing information concerning the compression is superimposed on an audio signal in the horizontal blanking period. The method is characterized by superimposing a pseudo-key signal on an audio signal in the vertical blanking interval, making the key signal contain information concerning the position of a vertical blanking interval, and fixing a video signal in a predetermined number of horizontal scanning periods before a vertical synchronizing signal portion in the vertical blanking interval at a constant level while eliminating color bursts in a predetermined number of horizontal scanning periods before and after the vertical synchronizing signal portion in the vertical blanking interval. In this way, unauthorized users are prohibited from receiving the signal, and unauthorized access is made difficult.