Abstract: An earthquake disaster prevention system having: an estimation section to estimate a size of an earthquake from a P-wave of the earthquake detected by the earthquake detector; a stopping control section to control to stop the motion of the operation device when the size of the earthquake estimated by the estimation section exceeds a stopping reference value; a calculation section to calculate at any time the size of the earthquake from the S-wave of the earthquake detected by the earthquake detector; a convergence judgment section to judge convergence of the earthquake by judging whether a predetermined earthquake convergence condition is satisfied from the size of the earthquake calculated by the calculation section; and a resumption control section to resume a predetermined motion of the operation device stopped by the stopping control section when the earthquake is judged to have converged by the convergence judgment section.

Abstract: An earthquake disaster prevention system having: an estimation section to estimate a size of an earthquake from a P-wave of the earthquake detected by the earthquake detector; a stopping control section to control to stop the motion of the operation device when the size of the earthquake estimated by the estimation section exceeds a stopping reference value; a calculation section to calculate at any time the size of the earthquake from the S-wave of the earthquake detected by the earthquake detector; a convergence judgment section to judge convergence of the earthquake by judging whether a predetermined earthquake convergence condition is satisfied from the size of the earthquake calculated by the calculation section; and a resumption control section to resume a predetermined motion of the operation device stopped by the stopping control section when the earthquake is judged to have converged by the convergence judgment section.

Abstract: The objectives of this invention are to provide a novel Nile red luminescent compound capable of emitting red light at a high luminance and at high color purity, and a luminescence element capable of emitting light at a high luminance. To achieve these objectives, the present invention provides a Nile red luminescent compound emitting red light represented by formula (1) and a luminescence element that includes the compound in the light-emitting layer thereof.

Abstract: The present invention provides blue-light emitting compounds capable of emitting blue light at a high luminance for a long time upon the application of electric energy, processes of producing the compounds, and luminescent elements including the blue light-emitting compounds. One of the compounds according to the present invention is characterized by the chemical structure represented by formula (1).

Abstract: The objectives of the present invention are to provide a red light-emitting compound capable of emitting red light at high color purity and strong luminance, and excellent in fastness, and to provide a luminescent element capable of emitting red light at strong luminance. The objectives are achieved by the Nile Red luminescent compound emitting red light represented by formula (1): wherein X is cyano group or a fluorohydrocarbyl group, and a luminescent element, the light-emitting layer of which includes the compound.

Abstract: The objective of the present invention is to provide a novel white light-emitting compound, which is a single substance, capable of emitting white light by itself, a simple process of preparing the white light-emitting compound, and a white light-emitting element including the white light-emitting compound. The white light-emitting compound according to the present invention is characterized by its structure represented by formula (1): wherein R1 denotes a hydrogen atom, an alkyl group with 1 to 10 carbon atoms, or a specified aryl group, wherein there are no cases where both R1s are hydrogen atoms.

Abstract: The objective of the present invention is to provide a blue light-emitting polymer capable of emitting blue light for a long time, and further excellent in durability, processes of producing the polymer, and a luminescent element. The blue light-emitting polymer of the invention has a repeating unit represented by formula (1): wherein each of Ar1 and Ar2 is a benzene derivative, a naphthalene derivative, or an anthracene derivative. The present invention also provides processes of producing the blue light-emitting polymer, and a luminescent element including the polymer.

Abstract: The objective of the present invention is to provide a fast and weatherable fluorescent compound capable of emitting white light by itself. The compound has the following structure with a quinacridone skeleton.

Abstract: The present invention provides luminescent polymers which can easily be formed into a film or a sheet, and which can easily be incorporated into a luminescent element. The present invention also provides luminescent elements which can be produced easily by the employment of the luminescent polymers.

Abstract: The objectives of this invention are to provide a luminescent compound capable of emitting white light by itself, and an illuminator and organic EL element that emit white light by the employment of the luminescent compound. The illuminator and the organic EL element are capable of emitting white light at a strong luminance for a long time. The luminescent compound is represented by the following formula (1) or (2): The illuminator and the organic EL element comprise a substrate on which an electrode has been formed and a luminescent layer including the compound, said luminescent layer being placed on the substrate.

Abstract: The objectives of this invention are to provide a novel Nile red luminescent compound capable of emitting red light at a high luminance and at high color purity, and a luminescence element capable of emitting light at a high luminance. To achieve these objectives, the present invention provides a Nile red luminescent compound emitting red light represented by formula (1) and a luminescence element that includes the compound in the light-emitting layer thereof.

Abstract: The present invention provides a compound which is capable of emitting white light by itself and applicable, for example, to organic EL elements, a process for producing the compound, and a luminescent element utilizing the compound.

Abstract: The present invention provides a light-emitting compound and a light-emitting polymer capable of emitting white light themselves, and a luminescent element including them. The compound has the structure represented by general formula (1). The polymer has the repeating unit represented by formula (3).

Abstract: In view of the fact that luminescent compounds and polymers capable of emitting blue light for a long time and excellent in durability have not been developed, the present invention provides blue light-emitting compounds having special structures, blue light-emitting polymers having special repeating units, processes of producing the compounds, and luminescent elements including the polymers.

Abstract: The objectives of this invention are to provide a novel Nile Red luminescent compound capable of emitting a light of which color is nearly crimson, a novel process for producing the same and a luminescent compound capable of emitting at a high luminance a nearly crimson light. This invention relates to a Nile Red luminescent compound emitting red light made by changing C═O in a Nile Red compound to C═CH—Ar, wherein Ar is an aromatic group including fluorine atoms, and by introducing an electron attractive aromatic acetonitrile into the skeleton of the Nile Red compound; a novel process for producing the Nile Red luminescent compound that comprises reacting a Nile Red pigment with an electron attractive aromatic acetonitrile, and a luminescent compound comprising a composition that includes the Nile Red luminescent compound.

Abstract: The objective of this invention is to provide fluorescent compounds comprising a naphthalene skeleton, an electron donating group substituted at the 2- or 1-position of the naphthalene skeleton, and an electron attractive group substituted at the 6- or 4-position of the skeleton. The fluorescent compound of this invention is capable of emitting visible light having a desired color by choosing an appropriate combination of the electron donating group A, which has an electron-pushing function, and the electron attractive group B, which has an electron-pulling function.

Abstract: The object of this invention is to provide an illuminant, which can easily be produced at low cost. This invention is a carbazole derivative luminescent compound having a carbazole ring skeleton, to the nitrogen atom of which is attached an electron-donating group, and to the carbon atom of which is attached an electron-attracting group at the third position to the nitrogen atom.

Abstract: The object of this invention is to provide an illuminant, which can easily be produced at low cost. This invention is a carbazole derivative luminescent compound having a carbazole ring skeleton, to the nitrogen atom of which is attached an electron-donating group, and to the carbon atom of which is attached an electron-attracting group at the third position to the nitrogen atom.

Abstract: The objective of this invention is to provide fluorescent compounds comprising a naphthalene skeleton, an electron donating group substituted at the 2- or 1-position of the naphthalene skeleton, and an electron attractive group substituted at the 6- or 4-position of the skeleton. The fluorescent compound of this invention is capable of emitting visible light having a desired color by choosing an appropriate combination of the electron donating group A, which has an electron-pushing function, and the electron attractive group B, which has an electron-pulling function.

Abstract: An automatic inner diameter measuring apparatus which includes an inner diameter measuring gauge head having at least one contacting element capable of being inserted into bores of an object to be measured and moving in a radial direction of the bore. A stocker is provided which is capable of holding a plurality of inner diameter measuring gauge heads corresponding to different diameters. A three-dimensional moving instrument is provided for detachable coupling with the inner diameter measuring gauge head to facilitate a three-dimensional movement with reference to the object to be measured and the inner diameter measuring gauge. A drive device for the three-dimensional moving instrument is provided. A plurality of master ring gauges supported on a ring gauge support are provided to set an inner diameter measuring gauge head attached thereto to zero.