Abstract: Provided is a motor braking device for a N-phase brushless motor. The motor braking device includes a switching circuit adapted to connect the N-phase brushless motor to a power supply, the switching circuit comprising a high side switch group and a low side switch group, each of the high side switch group and the low side switch group comprising N switching elements, and a control unit configured to control the switching circuit to brake the motor based on occurrence of a first event, the first event chosen from a group consisting of release of a trigger by a user, and occurrence of a predetermined condition as detected by a sensor. The control unit is configured to, upon occurrence of the first event, switch all the switching elements of one of the high side switch group or the low side switch group to an on-state, and simultaneously switch all the switching elements of the other one of the high side switch group and the lower side switch group to an off-state.

Abstract: Disclosed are a photovoltaic energy storage offline coordination system and method based on demand management. The system includes a photovoltaic generator set, an inverter, a dispatch and control device for charge-discharge, a load monitor, a first and second energy storage device, and a remote console. The photovoltaic generator set is electrically connected to the dispatch and control device for charge-discharge via the inverter; the first energy storage device is connected to a load-side power supply bus via a first dispatch and control unit; the second energy storage device is connected to the load-side power supply bus via a third dispatch and control unit; a second dispatch and control unit is connected to the load-side power supply bus; the load monitor is provided at the load-side power supply bus, and configured to monitor a load of the load-side.

Abstract: A biocontrol strain YW-1, a preparation method and application of a biocontrol agent thereof are provided. The strain is Myroides odoratimimus with the preservation number of CGMCC NO. 20620. The biocontrol agent of the biocontrol strain YW-1 is obtained by the following steps: oscillating culture the biocontrol strain YW-1 in a LB culture medium at 30 Celsius degrees and 180 rpm for 12-16 hours until a total concentration of living bacteria in a bacterial suspension is 1×109-1×1010 CFU/mL; centrifuging the bacterial suspension at 6000 rpm for 10 minutes to collect bacterial cells; and diluting the bacterial cells with sterilized water to obtain a concentration of 100 CFU/milliliter. By irrigating the root of every plant with 20 milliliters of the biocontrol agent when host plants are transplanted, it can effectively prevent soil-borne diseases such as fusarium wilt of melons, bacterial wilt of tomatoes and peppers, and Phytophthora capsici.

Abstract: A biocontrol strain YW-1, a preparation method and application of a biocontrol agent thereof are provided. The strain is Myroides odoratimimus with the preservation number of CGMCC NO. 20620. The biocontrol agent of the biocontrol strain YW-1 is obtained by the following steps: oscillating culture the biocontrol strain YW-1 in a LB culture medium at 30 Celsius degrees and 180 rpm for 12-16 hours until a total concentration of living bacteria in a bacterial suspension is 1×109-1×1010 CFU/mL; centrifuging the bacterial suspension at 6000 rpm for 10 minutes to collect thalli; and diluting the thalli with sterilized water to obtain a concentration of 100 CFU/milliliter. By irrigating the root of every plant with 20 milliliters of the biocontrol agent when host plants are transplanted, it can effectively prevent soil-borne diseases such as fusarium wilt of melons, bacterial wilt of tomatoes and peppers, and phytophthora capsici.

Abstract: The present invention discloses a method for freeze-drying drug liposomes powder assisted by a variable-frequency alternating-current electric field, which includes the following steps: (1) preparing a drug-liposome suspension sample; (2) dehydrating the sample under a 1-10 kHz, 3-10 kV high-voltage alternating current; (3) freezing and drying the sample treated in step (2) at ?20° C. to ?40° C., under a 10-25 kHz, 0.2-1 kV high-voltage alternating current, until completion of the freezing process; and (4) heating and drying the sample in a vacuum until completion of sublimation and desorption, and obtaining the drug liposomes freeze-dried powder. The present invention not only greatly shortens a freezing and drying time, but also controls a size of nuclei and ice crystals, further ensuring a quality of the freeze-dried powder.

Abstract: The present invention discloses a method for freeze-drying drug liposomes powder assisted by a variable-frequency alternating-current electric field, which includes the following steps: (1) preparing a drug-liposome suspension sample; (2) dehydrating the sample under a 1-10 kHz, 3-10 kV high-voltage alternating current; (3) freezing and drying the sample treated in step (2) at ?20° C. to ?40° C., under a 10-25 kHz, 0.2-1 kV high-voltage alternating current, until completion of the freezing process; and (4) heating and drying the sample in a vacuum until completion of sublimation and desorption, and obtaining the drug liposomes freeze-dried powder. The present invention not only greatly shortens a freezing and drying time, but also controls a size of nuclei and ice crystals, further ensuring a quality of the freeze-dried powder.

Abstract: A program converting system is provided. The system is running on a comparator. The program converting system includes a program importing module, a program converting module, a characteristic parameters fetching module and a storage module. The program importing module is used to import a program data package containing a first measurement program and characteristic parameters of at least one sample. The program converting module is used to convert the first measurement program to a second measurement program suitable for a comparator. The characteristic parameters fetching module is used to fetch the characteristic parameters from the program data package. The storage module is used to store the second measurement program and the characteristic parameter in a storage unit of the comparator. A method for program converting is also provided.