Abstract: A series-parallel switching circuit for bidirectional power conversion is provided. The series-parallel switching circuit includes a first bidirectional direct current (DC) voltage source and a second bidirectional DC voltage source, a first bidirectional DC/DC isolation conversion circuit and a second bidirectional DC/DC isolation conversion circuit, a series-parallel switching switch, a first output filter capacitor and a second output filter capacitor, a bleeder circuit, and a soft-start circuit. The series-parallel switching switch is configured to connect the first bidirectional DC/DC isolation conversion circuit and the second bidirectional DC/DC isolation conversion circuit in series or in parallel. When the series-parallel switching switch is switched, a voltage across the first output filter capacitor and a voltage across the second output filter capacitor are unchanged.

Abstract: A waterway board integrated component and a water purifier are provided. The waterway board integrated component includes a waterway board component and a bracket component mounted with electrical components. A filter element plugging structure is arranged on one side of the waterway board component; the filter element plugging structure is configured to plug a filter element component; a first end of the bracket component is connected to the waterway board component, and the bracket component is vertically arranged relative to the waterway board component; and the bracket component and the filter element plugging structure are located on the same side of the waterway board component. The water purifier includes a main housing and the above waterway board integrated component. The present disclosure provides a waterway board integrated component and a water purifier having the waterway board integrated component.

Abstract: A water purifier is provided, including a main housing, a waterway board component and a bracket component, the waterway board component and the bracket component are connected to form an electric-water total assembly module and are connected to the main housing. One side of the waterway board component is provided with a filter element plugging structure. A first end of the bracket component is connected to the waterway board component, the waterway board component is in “L” shaped connection with the bracket component; and the bracket component is arranged close to one side of the waterway board component. Or, the waterway board component is in “T” shaped connection with the bracket component; and the bracket component is arranged close to a middle part of one side of the waterway board component. The water purifier has a compact structure, is convenient to assemble, and has low cost.

Abstract: A water purifier is provided, including a main housing, a waterway board component, and a bracket component. A mounting opening is provided on one surface of the main housing, the waterway board component and the bracket component are inserted into the main housing from the mounting opening. At least two first and second reinforcing ribs are respectively arranged on the opposite first side wall and second side wall of the main housing. Both the first reinforcing ribs and the second reinforcing ribs extends into the main housing along the mounting opening. First limiting slots and second limiting slots are provided in two sides of the waterway board component or/and the bracket component, the first limiting slots are clamped to the first reinforcing ribs, and the second limiting slots are clamped to the second reinforcing ribs. The present disclosure has high structural stability, and provides a good user experience.

Abstract: A drug for preventing and/or treating a brain tumor and an application thereof. The drug comprises plasmodium. The drug has significant preventive and/or therapeutic effects on a brain tumor. The drug mainly regulates the immunological functions and inflammation-related factors of the body to break through the blood-brain barrier by fully activating immunocompetence and inhibiting the growth of a brain tumor, thereby extending lifespan.

Abstract: A dual active bridge (DAB) circuit, a power supply, and a direct current to direct current (DC-DC) converter are provided. The DAB circuit includes a primary-side DC power supply, a primary-side single-phase full-bridge circuit, a transformer module, a secondary-side single-phase full-bridge circuit, and a secondary-side DC load connected in sequence. The first switching unit is configured to switch a turns ratio of the transformer according to the input voltage and the output voltage. The inductor unit is configured to provide a corresponding inductance when the first switching unit switches the turns ratio, to adjust power conversion efficiency of the primary-side single-phase full-bridge circuit and/or the secondary-side single-phase full-bridge circuit. The DC-blocking unit is configured to isolate a DC voltage on a secondary side of the transformer and output an alternating current (AC) voltage on the secondary side of the transformer to the secondary-side single-phase full-bridge circuit.

Abstract: A series-parallel switching circuit for bidirectional power conversion is provided. The series-parallel switching circuit includes a first bidirectional direct current (DC) voltage source and a second bidirectional DC voltage source, a first bidirectional DC/DC isolation conversion circuit and a second bidirectional DC/DC isolation conversion circuit, a series-parallel switching switch, a first output filter capacitor and a second output filter capacitor, a bleeder circuit, and a soft-start circuit. The series-parallel switching switch is configured to connect the first bidirectional DC/DC isolation conversion circuit and the second bidirectional DC/DC isolation conversion circuit in series or in parallel. When the series-parallel switching switch is switched, a voltage across the first output filter capacitor and a voltage across the second output filter capacitor are unchanged.

Abstract: The present invention provides crystals of a quaternary ammonium salt structure compound, i.e., (2R,3R)-3-[(2-cyclopentyl-2-hydroxy-2-phenyl)ethoxy]-1-(3-phenoxypropyl) azabicyclo[2,2,2]octylonium bromide (Compound I). A Type-A crystal of Compound I displays diffraction peaks at the following diffraction angles 2? in a X-ray powder diffraction pattern thereof: 5.7±0.2 degrees, 12.9±0.2 degrees, 16.7±0.2 degrees, 18.0±0.2 degrees, 19.5±0.2 degrees, 21.1±0.2 degrees, 22.3±0.2 degrees and 23.3±0.2 degrees. A Type-B crystal of Compound I displays diffraction peaks at the following diffraction angles 2? in a X-ray powder diffraction pattern thereof: 5.2±0.2 degrees, 15.8±0.2 degrees, 16.9±0.2 degrees, 17.7±0.2 degrees, 19.5±0.2 degrees, 20.2±0.2 degrees and 22.1±0.2 degrees. The present application also relates to a new method for preparing Compound I and applications of the two novel crystals in the field of medicine.

Abstract: Provided is a catenated VAR2CSA recombinant protein, a preparation therefor and a use thereof. The catenated VAR2CSA recombinant protein comprises a binding domain, SpyTag, a p53dim structural domain, and SpyCatcher, which are randomly arranged. The binding domain comprises a structural domain, in the VAR2CSA protein, binding to placenta-like chondroitin sulfate A. The catenated VAR2CSA recombinant protein has high stability and affinity to the tumor-specific antigen placenta-like chondroitin sulfate A, and can be effectively used in the field of tumor immunotherapy, such as immune cell therapy.

Abstract: Provided are a chimeric antigen receptor and an application thereof; said chimeric antigen receptor contains a domain which identifies any one of, or a combination of at least two of, the malarial protein VAR2CSA, a protein tag on malarial protein VAR2CSA, or a compound capable of labeling the malarial protein VAR2CSA. The chimeric antigen receptor can identify the VAR2CSA protein or the recombinant protein (rVAR2) of any one of, or at least two of, the domains of the VAR2CSA protein which can bind to placental-like chondroitin sulfate A (pl-CSA). The VAR2CSA protein or rVAS2 protein is capable of targeting several different types of tumor cells by means of binding to the pl-CSA on the surface of the tumor cell.

Abstract: Provided are the use of Plasmodium in the preparation of an anti-tumor preparation for use in combination with radiotherapy and a Plasmodium anti-tumor preparation for use in combination with radiotherapy.

Abstract: Disclosed are a decoquinate liposome, a preparation method therefor and a use thereof. The preparation raw materials for the decoquinate liposome comprise the following components in parts by weight: 1 part of decoquinate and 2-20 parts of lecithin. The liposome is stable, shows favorable malaria resistance effects in-vivo and in-vitro with respect to animal bodies, can be used for quickly relieving the conditions of malaria, particularly subtertian malaria, and is safe. The preparation method is simple and feasible, and has the potential for mass production.

Abstract: The invention relates to a planting method of DendrobiumnobileLindl, it comprises the following steps: Selecting betel palm trees that are more than 5 years old or or more than 6 meters high; Selecting the DendrobiumnobileLindl seedlings with a height of more than 12 cm, with 1 or 2 new buds and complete roots, stems and leaves, and dividing DendrobiumnobileLindl seedlings into 2-4 clumps a group; Combing and aligning the roots of each group of DendrobiumnobileLindlseedlings, taking one group of DendrobiumnobileLindl seedlings and sticking them to the knot of the betel plain tree each time, then using a cotton rope or a tie to wind and fix the DendrobiumnobileLindl seedlings on the betel palm tree trunk from the stems of each group of DendrobiumnobileLindl seedlings; Putting the roots below the stembase of the DendrobiumnobileLindlseedling on the betel palm tree trunk and smearingdendrobium nutrient.

Abstract: The application discloses a method for replacing seedbed culture substrate and a conveyor belt seedbed, the flatbed truck is used to receive the dropped culture substrate at the end of the conveyor belt that has been driven all the time, without manual removal by workers. The conveyor belt continues to drive until the flatbed truck is fully loaded or only when the culture substrate on the conveyor belt is emptied, only need to place the flatbed truck full of culture substrate at the head end of the conveyor belt when placing new culture substrate, and turn on the conveyor belt, which speeds up the efficiency of replacing the culture substrate, and this method only requires one person can complete the replacement of the culture substrate on the seedbed, which solves the technical problem that the existing method of replacing the culture substrate is to manually remove the culture substrate on the seedbed, which leads to the long time for replacing the culture substrate and low work efficiency.

Abstract: The invention relates to an electric seedling greenhouse, The illumination intensity in the seedling greenhouse is detected by the illumination transmitter, the light intensity information in the seedling greenhouse is transmitted to the information processing module, the light intensity preset value required by plants is set in the information processing module, the shading rate of the first sunshade device is not equal to the shading rate of the second sunshade device, when the light intensity is higher than the preset value, the light intensity collected by the illuminance transmitter is transmitted to the information processing module, and it is judged to meet the value of starting sunshade device, then analyze the light intensity to automatically select the corresponding shading rate of the sunshade device to open and complete the shading.

Abstract: A processing method of Dendrobium organic fertilizer, which comprises the following steps: Step 1: select 4-6 parts by weight of rotten animal dung; Step 2: add 0.5-1.5 parts by weight of disinfectant to animal dung; Step 3: add disinfectant to dung and let it stand for 1-3 hours; Step 4. uniformly mixing to obtain organic fertilizer. The invention controls the viscosity of animal dung within a range, thereby improving the adhesion between animal dung and Dendrobium, slowing down the drying and hardening speed of animal dung, moisturizing the roots, sterilizing animal dung and reducing the probability of affecting the growth of Dendrobium.

Abstract: This application provides a dendrobium watering method and system, by way of imitation of wild cultivation of dendrobium on volcano, first on the volcano cant selection from the top 15 to 25 cm line code position, use a hard masonry nail line code insert to spray rod fixed to the fixed position of the line of code. The ground lance G-shaped nozzle is higher than the top of the volcano.