Abstract:
A permanent magnet harmonic motor comprises: a rotor mechanism (1) with several permanent magnets (2) disposed thereon, a stator mechanism (3) fitted with the rotor mechanism (1), and a support mechanism (8) with a bearing assembly (10) disposed thereon. The rotor mechanism (1) is connected to the support mechanism (8) through the bearing assembly (10); magnetic regulating teeth (4) are circumferentially formed at a part of the stator mechanism (3) close to the rotor mechanism (1), and distributed windings (6) are arranged on the magnetic regulating teeth (4). The number of parts in the permanent magnet harmonic motor is reduced; the permanent magnet harmonic motor has a simpler structure, and an assembly process is simple. In addition, the weight of the whole motor is reduced, and the size of the motor is reduced, which facilitate the reduction in the unsprung mass of an electric vehicle, thereby improving the stability and riding comfort of the vehicle.
Abstract:
Provided herein are antigen targets determined for 2019-nCoV prevention and treatment and designed corresponding vaccines. In addition, the use of these 4 forms of vaccines for the prevention and treatment of diseases and the preparation of antibodies is provided.
Abstract:
Through the use of a rhodamine appended chelate, a versatile strategy has been demonstrated to generate mitochondria-targeting photosensitizers via the incorporation of variety of luminescent transition metal systems. The generation of triplet excited state of rhodamine moiety endows the complexes with mitochondria-targeting photosensitizing ability to form singlet oxygen ( 1 O 2 ) for use as photodynamic therapy (PDT) agent. The combination of rhodamine organic dye and luminescent transition metal centers in such hybrid systems exhibits the synergistic merits, including low dark cytotoxicity, selective tumor cell uptake, high molar absorptivity for low-energy excitation in the visible region, and high photostability.
Abstract:
An ultrasonic imaging system for measuring elasticity of biological tissues, including a probe (10), an ultrasonic imaging device (310), a controlling and processing device (330), and a display device (350). The probe(10) includes a low frequency oscillating device (110) and an ultrasonic array transducer (130). The low frequency oscillating device (110) is configured for generating oscillation and forming shear waves propagating from a body surface to the biological tissues. The ultrasonic array transducer (130) is configured for emitting ultrasonic signals to the biological tissues and receiving ultrasonic echo signals reflected from the biological tissues. The ultrasonic imaging device (310), according to loaded imaging parameters, drives the ultrasonic array transducer (130) to emit the ultrasonic signal to the biological tissues, and receives and processes the ultrasonic echo signals from the ultrasonic array transducer (130). The controlling and processing device (330) controls the low frequency oscillating device (110) and the ultrasonic imaging device (310) to obtain a 2D ultrasonic image and elasticity information of the biological tissues. The display device (350) displays the 2D ultrasonic image and the elasticity information of the biological tissues. The 2D ultrasonic image and elasticity information of the biological tissues can be obtained at the same time, such that accuracy of clinical diagnosing is promoted. The low frequency oscillating device (110) and the ultrasonic array transducer (130) are independent, so the ultrasonic array transducer (130) will not move with the low frequency oscillating device (110), and there is no need to considerate displacement compensation. The probe (10) can locate accurately with the aid of the 2D ultrasonic image, such that convenience and accuracy is promoted in measuring elastic modulus and process difficulty is decreased.
Abstract:
The present invention provides a method for preparing dendritic cell loaded with antigen, the method comprising the steps of adding serum-free cell culture medium containing granulocyte-macrophage colony-stimulating factor (GM-CSF) and interleukin (IL)-4 into mononuclear cells, culturing in an incubator at 37℃ under 5% carbon dioxide for 5 days, adding target antigen wrapped cationic liposome and culturing for 8-24 hours to obtain target antigen loaded dendritic cell.
Abstract:
A system for particle manipulation and sorting based on structural acoustic field comprises a sample holder, an ultrasound transmission device and an artificial structure, the sample holder is used to place particles to be sorted, the ultrasound transmission device is used to transmit ultrasound wave, the artificial structure is periodic structure used to modulate acoustic field to produce stronger acoustic radiation force and sort the particles to be sorted. And there is a method for particle manipulation and sorting based on structural acoustic field. Due to the sample holder, the ultrasound transmission device and the artificial structure, plurality of particles could be placed on the sample holder simultaneously, the artificial structure is used to modulate the acoustic field to produce stronger acoustic radiation force, trapping the specific particles under the lower surface of the artificial structure at the same time, realizing rapid, batch sorting and increasing the efficiency.
Abstract:
An image-based method for measuring elasticity of biological tissues and an image-based system thereof, in which the method includes following steps: obtaining N successive grayscale images of a testing biological tissue, where N is a positive integer (S110); obtaining regions of interest (ROI) of the grayscale images (S120); dividing the regions of interest into a grid of small sections (S130); calculating relative displacement vector of each interrogation window using texture matching method (S140); and calculating elastic modulus of each interrogation window according to the relative displacement vectors (S150). The method can be applied to various resolutions of grayscale images obtaining in ultrasound imaging, optical imaging, photoacoustic imaging, CT imaging, magnetic resonance imaging and the like. The system can be integrated into a traditional clinical imaging system as an image post-processing software module to characterize tissue elasticity. The method enables increasing imaging system function avoiding hardware upgrading of a current clinical imaging system with reduced cost, and is convenient to be clinically popularized.
Abstract:
Disclosed are a tropical cyclone symmetry structure analysis method and apparatus, a device, and a storage medium. TC locations and TC intensities are acquired based on TC best track datasets; polar coordinate systems are created with the TC locations as origins; hourly infrared brightness temperature data are acquired based on satellite data, and are interpolated into the corresponding polar grids to obtain infrared brightness temperature polar grid data; then convection symmetry indexes of inner-core regions of TCs are calculated based on the infrared brightness temperature polar grid data; and finally, the relationship between the convective symmetry indexes and the TC intensities is analyzed.
Abstract:
The present invention provides a microelectrode, comprising a flexible layer, an electrically conductive layer and a plurality of platinum dendrite structures, wherein the electrically conductive layer is arranged in the flexible layer, and wherein on the surface of the flexible layer are a plurality of grooves within which the electrically conductive layer is revealed partially, and wherein each of the groove is provided with one platinum dendrite structure therein. The plurality of grooves serve as focal electrodes distributed uniformly, with smaller electrode sites and more recording points. The modified platinum dendrite structures increase the surface area, electrical performance, biocompatibility and service life of the microelectrode. Besides, creating virtual electrodes by current steering technique increases the number of stimuli received by microelectrode during use, and improves its resolution in applications.