Abstract: A multi-split air conditioner comprising an outdoor unit and a group of indoor units, the group of indoor units comprising a plurality of indoor units connected in parallel, at least one indoor unit comprising: a main flow path, comprising an electronic expansion valve and an indoor heat exchanger successively connected via a main pipeline, at least part of the main pipeline located at a refrigerant inlet end of the electronic expansion valve being used as a supercooling parallel section; a supercooling branch, comprising a supercooler, the supercooling branch being connected in parallel to the supercooling parallel section; and a communication switching assembly, configured to be controlled to communicate the supercooling parallel section and/or the supercooling branch with the electronic expansion valve.

Abstract: Systems and methods for performing ultrasound imaging. Ultrasound information of a subject region in response to ultrasound pulses transmitted toward the subject region can be collected. One or more ultrasound images of at least a portion of the subject region can be formed using the ultrasound information. The ultrasound information can be stored in a memory. In turn, the ultrasound information can be accessed from the memory. Subsequently, the ultrasound information accessed from the memory can be reprocessed to retrospectively generate one or more additional ultrasound images of at least a portion of the subject region.

Abstract: Systems and methods for performing ultrasound imaging. Main channel domain data for performing ultrasound imaging of a subject area for performing ultrasound imaging of the subject area is collected. Further, region of interest (“ROI”) channel domain data for performing ultrasound imaging of a ROI within the subject area is collected. One or more ultrasound images of the subject area can be formed using the main channel domain data. Additionally, one or more ROI ultrasound images of the ROI within the subject can be formed independently from the one or more main ultrasound images of the subject area using the ROI channel domain data of the ROI within the subject area. Subsequently, the one or more ROI ultrasound images can be displayed concurrently with the one or more main ultrasound images.

Abstract: A system for identifying Shenqi Fuzheng injection includes a mechanism for establishing a profile of a sample to be tested; a mechanism for establishing a characteristic fingerprint profile of Shenqi Fuzheng injection as a standard fingerprint profile; and a mechanism for comparing the profile of the sample to be tested with the standard fingerprint profile to distinguish between authentic Shenqi Fuzheng injection and counterfeit Shenqi Fuzheng injection. A method for establishing a Shenqi Fuzheng injection fingerprint spectrum, including: employing an ultra-high voltage liquid chromatography mass spectrometer to test the Shenqi Fuzheng injection, the chromatography conditions including: chromatographic column: Agilent Zorbax Eclipse Plus C18, 2.1 mm×100 mm, 1.8 ?m; mobile phase: mobile phase A is 0.1% formic acid aqueous solution, and mobile phase B is 0.1% formic acid acetonitrile solution; and employing gradient elution procedure.

Abstract: A method for establishing a Shenqi Fuzheng injection fingerprint spectrum, comprising: employing an ultra-high voltage liquid chromatography mass spectrometer to test the Shenqi Fuzheng injection, the chromatography conditions including: chromatographic column: Agilent Zorbax Eclipse Plus C18, 2.1 mm×100 mm, 1.8 ?m; mobile phase: mobile phase A is 0.1% formic acid aqueous solution, and mobile phase B is 0.1% formic acid acetonitrile solution; employing gradient elution procedure as follows: 0-0.5 min, 95% of mobile phase A, and 5% of mobile phase B; 0.5-10 min, 95%-75% of mobile phase A, and 5%-25% of mobile phase B; 10-15 min, 75%-45% of mobile phase A, and 25%-55% of mobile phase B; 15-18 min, 45%-0% of mobile phase A, and 55%-100% of mobile phase B; and 18-20 min, 0% of mobile phase A, and 100% of mobile phase B.