Abstract: A fixed value residual stress test block, comprising a main body (1) and two welded blocks (2); the main body (1) and the welded blocks (2) are all rectangular metal blocks; the welded blocks (2) are welded onto the two opposite side surfaces of the main body (1); the main body (1) is deformed under the upper and lower pressures and generates residual stress. The fixed value residual stress test block has a simple structure.

Abstract: A microbubble used as a contrast agent for ultrasound imaging burst due to high intensity of ultrasound, and the burst microbubble effectively acts as a contrast agent for photoacoustic imaging. Based on this point, a new apparatus and method for combined photoacoustic and ultrasound diagnosis are provided.

Abstract: A fixed value residual stress test block, comprising a main body (1) and two welded blocks (2); the main body (1) and the welded blocks (2) are all rectangular metal blocks; the welded blocks (2) are welded onto the two opposite side surfaces of the main body (1); the main body (1) is deformed under the upper and lower pressures and generates residual stress. The fixed value residual stress test block has a simple structure.

Abstract: A fixed value residual stress test block, comprising a main body (1) and two welded blocks (2); the main body (1) and the welded blocks (2) are all rectangular metal blocks; the welded blocks (2) are welded onto the two opposite side surfaces of the main body (1); the main body (1) is deformed under the upper and lower pressures and generates residual stress. The fixed value residual stress test block has a simple structure.

Abstract: A sensor device, comprising two symmetrically disposed sonolucent wedges (5), and a connecting piece for fixedly connecting the two sonolucent wedges (5); the upper surfaces of the sonolucent wedges (5) are provided with inclined planes; installation holes are formed on the inclined planes; transducers (3) are installed in respective installation holes; one transducer (3) is used to generate ultrasonic waves, and the other transducer (3) is used to receive the ultrasonic waves generated by the previous transducer (3). The residual stress detection system comprises a sensor device, an ultrasonic transmission card, and a data acquisition card.

Abstract: Provided are compositions and methods relating to hydrophobic agent loaded-micelle. The micelles comprise surfactant (such as poloxamer) and have hydrophobic agents incorporated therein. The compositions substantially lack surfactant that is not associated with the micelles. The compositions are able to achieve high hydrophobic agent: surfactant molar ratio. The compositions can be used for drug delivery and imaging applications.

Abstract: Provided are compositions and methods relating to hydrophobic agent loaded-micelle. The micelles comprise surfactant (such as poloxamer) and have hydrophobic agents incorporated therein. The compositions substantially lack surfactant that is not associated with the micelles. The compositions are able to achieve high hydrophobic agent:surfactant molar ratio. The compositions can be used for drug delivery and imaging applications.

Abstract: A fixed value residual stress test block, comprising a main body (1) and two welded blocks (2); the main body (1) and the welded blocks (2) are all rectangular metal blocks; the welded blocks (2) are welded onto the two opposite side surfaces of the main body (1); the main body (1) is deformed under the upper and lower pressures and generates residual stress. The fixed value residual stress test block has a simple structure.

Abstract: A microbubble is used as a multi-modality contrast agent for photoacoustic imaging and ultrasound imaging. A method of preparing improved microbubbles that are used as a multi-modality contrast agent for photoacoustic imaging and ultrasound imaging is provided. The microbubble includes a dye-colored lipid shell; and a filling gas filling the inside of the lipid shell. The method of preparing microbubbles includes agitating a dye-colored lipid-containing solution in the presence of filling gas.

Abstract: A microbubble used as a contrast agent for ultrasound imaging burst due to high intensity of ultrasound, and the burst microbubble effectively acts as a contrast agent for photoacoustic imaging. Based on this point, a new apparatus and method for combined photoacoustic and ultrasound diagnosis are provided.