Abstract: An object of the present invention is to provide a retardation film succeeded in solving those conventional problems, that is, a retardation film insusceptible to color dropout or color shift even under environment of severe temperature or humidity conditions and capable of being produced by a melt film-forming method. The retardation film of the present invention satisfies the relationships of the following formulae (A) and (B): 0.7<R1(450)/R1(550)<1??Formula (A): |R2(450)/R2(550)?R1(450)/R1(550)|<0.

Abstract: Provided is a technology which quantitatively measures blood flow in the vicinity of circulatory organs. An ultrasound image capture device according to the present invention removes an image portion corresponding to an organ shape by taking the difference of a multi-frame ultrasound image, and thereafter computes a measured value of a blood flow velocity vector on the basis of a plurality of images at different timings (as per FIG. 3).

Abstract: The problem to be solved by the present invention is to provide a polycarbonate copolymer containing a plant-derived raw material, which is excellent in the mechanical strength and heat-resistant and assured of small refractive index, large Abbe number, small birefringence and excellent transparency. The present invention provides a polycarbonate copolymer containing a constitutional unit derived from a dihydroxy compound represented by the following formula (1) and a constitutional unit derived from an alicyclic dihydroxy compound, wherein the Abbe number is 50 or more and the 5% thermal reduction temperature is 340° C. or more; and a method of producing this polycarbonate copolymer by reacting a dihydroxy compound represented by the following formula (1) and an alicyclic hydroxy compound with a carbonic acid diester in the presence of a polymerization catalyst.

Abstract: The present invention relates to a transparent film obtained by molding a polycarbonate resin composition comprising a specific weight of (A) a polycarbonate resin containing (a) a specific structural unit and (b) a specific structural unit, and a specific weight of (B) a resin having a composition different from that of the polycarbonate resin (A), with a specific absolute value of the difference in the glass transition temperature between the resin (B) and the polycarbonate resin (A) and a specific absolute value of the difference in the refractive index, wherein in the transparent film, the ratio of the retardation measured at a wavelength of 450 nm to the retardation measured at a wavelength of 550 nm satisfies a specific formula.

Abstract: The present invention provides a long retardation film having sufficient reversed wavelength dispersion characteristics and favorable for film lamination according to a roll-to-roll system. A long retardation film of the present invention includes a polycarbonate resin or a polyester carbonate resin, an orientation angle ? which is an angle between a slow axis and a width direction satisfies the following formula (I), and a ratio of an in-plane retardation R450 measured at a wavelength of 450 nm to an in-plane retardation R550 measured at a wavelength of 550 nm satisfies the following formula (II): 38°???52°??(I) R450/R550<1??(II).

Abstract: The present invention obtains certainty of the blood-flow velocity information that is estimated in the blood-flow mapping display. The signal processor in the ultrasound imager is provided with a Doppler velocity operation part configured to calculate a Doppler velocity from echo signals by using the Doppler effect, and a first blood-flow velocity operation part configured to generate a tissue tomographic image from the echo signals and calculate a blood-flow velocity of a predetermined portion from a motion of the tissue, on the basis of the tissue tomographic image. It is further provided with a second blood-flow velocity operation part configured to calculate the blood-flow velocity of the predetermined portion by using the Doppler velocity calculated by the Doppler velocity operation part.

Abstract: Ultrasonic imaging device noninvasively measures cardiac muscle stiffness or intracardiac pressure. The device includes: an ultrasonic probe (2) transmitting and receiving ultrasonic waves to and from the heart; a signal-processing section (15) processing reflected echo signals; a display section (14) displaying results of signal processing as an image; and an input section (10) setting a predetermined point on the image.

Abstract: The polycarbonate resin of the present invention comprises a structural unit derived from a dihydroxy compound represented by a specific formula (1), a structural unit derived from a dihydroxy compound represented by a specific formula (2), and a structural unit derived from a dihydroxy compound represented by any one of specific formulae (3) to (6), wherein the content of structural units derived from dihydroxy compounds represented by the specific formulae (3) to (6) is within a specific range based on the total of structural units derived from dihydroxy compounds in the polycarbonate resin.

Abstract: The polycarbonate resin of the present invention comprises a structural unit derived from a dihydroxy compound represented by a specific formula (1), a structural unit derived from a dihydroxy compound represented by a specific formula (2), and a structural unit derived from a dihydroxy compound represented by any one of specific formulae (3) to (6), wherein the content of structural units derived from dihydroxy compounds represented by the specific formulae (3) to (6) is within a specific range based on the total of structural units derived from dihydroxy compounds in the polycarbonate resin.

Abstract: The present invention relates to a polycarbonate resin composition, comprising: a polycarbonate resin containing a structural unit derived from a dihydroxy compound having a moiety represented by the following formula (1) [provided that a case where the moiety represented by formula (1) is a moiety constituting —CH2—O—H is excluded]; and an elastomer composed of a core•shell structure, wherein a core layer of the elastomer is at least one member selected from the group consisting of an alkyl (meth)acrylate and a (meth)acrylic acid, and a polycarbonate resin molded article obtained by molding the polycarbonate resin composition: CH2—O??(1).

Abstract: The present invention relates to a polycarbonate resin composition, comprising: a polycarbonate resin containing a structural unit derived from a dihydroxy compound having a moiety represented by the following formula (1) [provided that a case where the moiety represented by formula (1) is a moiety constituting —CH2—O—H is excluded]; and an elastomer composed of a core?shell structure, wherein a core layer of the elastomer is composed of a butadiene-styrene copolymer, and a polycarbonate resin molded article obtained by molding the polycarbonate resin composition: CH2—O??(1).

Abstract: The problem to be solved by the present invention is to provide a polycarbonate copolymer containing a plant-derived raw material, which is excellent in the mechanical strength and heat-resistant and assured of small refractive index, large Abbe number, small birefringence and excellent transparency. The present invention provides a polycarbonate copolymer containing a constitutional unit derived from a dihydroxy compound represented by the following formula (1) and a constitutional unit derived from an alicyclic dihydroxy compound, wherein the Abbe number is 50 or more and the 5% thermal reduction temperature is 340° C. or more; and a method of producing this polycarbonate copolymer by reacting a dihydroxy compound represented by the following formula (1) and an alicyclic hydroxy compound with a carbonic acid diester in the presence of a polymerization catalyst.

Abstract: The problem to be solved by the present invention is to provide a polycarbonate copolymer containing a plant-derived raw material, which is excellent in the mechanical strength and heat-resistant and assured of small refractive index, large Abbe number, small birefringence and excellent transparency. The present invention provides a polycarbonate copolymer containing a constitutional unit derived from a dihydroxy compound represented by the following formula (1) and a constitutional unit derived from an alicyclic dihydroxy compound, wherein the Abbe number is 50 or more and the 5% thermal reduction temperature is 340° C. or more; and a method of producing this polycarbonate copolymer by reacting a dihydroxy compound represented by the following formula (1) and an alicyclic hydroxy compound with a carbonic acid diester in the presence of a polymerization catalyst.

Abstract: A retardation film insusceptible to color dropout or color shift even under environment of severe temperature or humidity conditions and capable of being produced by a melt film-forming method. The retardation film is obtained by molding at least one polymer selected from polycarbonate and polyester carbonate each having a glass transition temperature of 110 to 180° C. and satisfies the relationships of the following formulae (A) and (B): 0.7<R1(450)/R1(550)<1??Formula (A): |R2(450)/R2(550)?R1(450)/R1(550)|<0.020.

Abstract: The polycarbonate resin of the invention includes a first structural unit derived from a dihydroxy compound represented by a general formula (1), a second structural unit derived from a dihydroxy compound represented by a general formula (2), and a third structural unit derived from at least one dihydroxy compound selected from the group consisting of a dihydroxy compound represented by a general formula (3), a dihydroxy compound represented by a general formula (4), a dihydroxy compound represented by a general formula (5), and a dihydroxy compound represented by a general formula (6), and in which the first structural unit derived from a dihydroxy compound represented by the general formula (1) accounts for 18% by mole or more of the polycarbonate resin. The above general formulae (1) to (6) are described in the specification of the present application.

Abstract: An object of the present invention is to provide a retardation film succeeded in solving those conventional problems, that is, a retardation film insusceptible to color dropout or color shift even under environment of severe temperature or humidity conditions and capable of being produced by a melt film-forming method. The retardation film of the present invention satisfies the relationships of the following formulae (A) and (B): 0.7<R1(450)/R1(550)<1??Formula (A): |R2(450)/R2(550)?R1(450)/R1(550)|<0.

Abstract: In ultrasonic imaging, a physically consistent value of blood flow velocity is measured in the vicinity of body tissues. The ultrasound imaging apparatus comprises a shape extraction part for recognizing shape data of biological tissues by using echo signals reflected from a test subject irradiated with ultrasonic waves, a flow velocity distribution acquisition part for detecting blood flow velocities in the vicinity of the tissues from the echo signals, and a velocity determination part for extracting velocity information desired by a tester (objective velocity information). The velocity determination part sets a model of the objective blood flow, and determines a velocity of actually measured velocity distribution consistent with velocity distribution estimated from the model.

Abstract: The polycarbonate resin of the invention includes a first structural unit derived from a dihydroxy compound represented by a general formula (1), a second structural unit derived from a dihydroxy compound represented by a general formula (2), and a third structural unit derived from at least one dihydroxy compound selected from the group consisting of a dihydroxy compound represented by a general formula (3), a dihydroxy compound represented by a general formula (4), a dihydroxy compound represented by a general formula (5), and a dihydroxy compound represented by a general formula (6), and in which the first structural unit derived from a dihydroxy compound represented by the general formula (1) accounts for 18% by mole or more of the polycarbonate resin. The above general formulae (1) to (6) are described in the specification of the present application.

Abstract: The polycarbonate resin of the present invention comprises a structural unit derived from a dihydroxy compound represented by a specific formula (1), a structural unit derived from a dihydroxy compound represented by a specific formula (2), and a structural unit derived from a dihydroxy compound represented by any one of specific formulae (3) to (6), wherein the content of structural units derived from dihydroxy compounds represented by the specific formulae (3) to (6) is within a specific range based on the total of structural units derived from dihydroxy compounds in the polycarbonate resin.

Abstract: The present invention relates to a polycarbonate resin composition, comprising: a polycarbonate resin containing a structural unit derived from a dihydroxy compound having a moiety represented by the following formula (1) [provided that a case where the moiety represented by formula (1) is a moiety constituting —CH2—O—H is excluded]; and an elastomer composed of a core?shell structure, wherein a core layer of the elastomer is composed of a butadiene-styrene copolymer, and a polycarbonate resin molded article obtained by molding the polycarbonate resin composition: ?CH2—O???(1)