Abstract: An emergency protection system for UPS, including a power module for supplying power; a power control module for controlling the transmission of power; a power status detection module for detecting whether an abnormality in the power has occurred; a voltage change detection module for detecting whether a sudden change in the power has occurred; a timing detection module for detecting, in the event of an abnormality in the power, whether the duration of no sudden changes in power exceeds a timing length; a micro-control module for signal reception and module control; a power distribution control module for supplying power to an energy storage module and transmitting the power released by the energy storage module, and for high-frequency power regulation processing of the power released by the energy storage module; and an output processing module for superimposing, inverting, and outputting power.

Abstract: An energy-saving operation and control method for a UPS. The method includes performing a concomitant detection on a self-discharge condition of the UPS without any further processing before the concomitant detection, to obtain an automatic discharging amount per unit of time when the battery is in an un-operating state; determining a replacement timing among three kinds according to a value of the discharging amount; and generating a replacement signal at a corresponding time point according to the replacement timing; according to the generated replacement signal, performing a process of power charging and power discharging on the battery.

Abstract: The present disclosure provides a large-scale low-temperature controllable atmospheric boundary layer test system and method for wind and snow simulation. The system includes an atmospheric boundary layer wind tunnel, a plenum chamber and a refrigeration system. The atmospheric boundary layer wind tunnel includes an upper flow channel and a lower flow channel communicating with each other end to end. A power section is arranged in the upper flow channel. A settling chamber, a contraction section and a test section are sequentially arranged in the lower flow channel. Corners of a closed return wind tunnel are respectively provided with a transition section. A fan is disposed in the power section. An air heat exchanger is disposed in the settling chamber. The plenum chamber is divided by a partition into a storage room for storing snow particles and an operation room provided with a snow particle vibratory spreading device. The storage room is located at an upper part of the settling chamber.

Abstract: Described are a method for suppressing overshoot of an output voltage or output current, a charging device, and a medium. The method for suppressing the overshoot of the output voltage or output current includes the following. A loop in an open-loop state in a closed-loop control circuit is determined. A wave-sending control value output by the closed-loop control circuit at a present beat is obtained. The wave-sending control value output at the present beat is assigned to an open-loop output value at the present beat, where the open-loop output value is an output value of the loop in the open-loop state. An open-loop output value of a loop in the open-loop state at a next beat is calculated by using an assigned open-loop output value at the present beat.

Abstract: Described are a method for suppressing overshoot of an output voltage or output current, a charging device, and a medium. The method for suppressing the overshoot of the output voltage or output current includes the following. A loop in an open-loop state in a closed-loop control circuit is determined. A wave-sending control value output by the closed-loop control circuit at a present beat is obtained. The wave-sending control value output at the present beat is assigned to an open-loop output value at the present beat, where the open-loop output value is an output value of the loop in the open-loop state. An open-loop output value of a loop in the open-loop state at a next beat is calculated by using an assigned open-loop output value at the present beat.

Abstract: The present invention relates to deuterated pyridopyrimidinone compounds and pharmaceutically acceptable salts thereof with inhibitory activity at cyclin dependent kinase 2 (CDK2) kinase, pharmaceutical composition comprising such compounds and methods of using such compounds for treating diseases associated with cell-cycle dysregulation.

Abstract: The present disclosure provides a large-scale low-temperature controllable atmospheric boundary layer test system and method for wind and snow simulation. The system includes an atmospheric boundary layer wind tunnel, a plenum chamber and a refrigeration system. The atmospheric boundary layer wind tunnel includes an upper flow channel and a lower flow channel communicating with each other end to end. A power section is arranged in the upper flow channel. A settling chamber, a contraction section and a test section are sequentially arranged in the lower flow channel. Corners of a closed return wind tunnel are respectively provided with a transition section. A fan is disposed in the power section. An air heat exchanger is disposed in the settling chamber. The plenum chamber is divided by a partition into a storage room for storing snow particles and an operation room provided with a snow particle vibratory spreading device. The storage room is located at an upper part of the settling chamber.

Abstract: The present disclosure discloses a compound as represented by formula (I) or a pharmaceutically acceptable salt, a solvate or a stereoisomer thereof, that can be represented by the following structure As a selective inhibitor of cyclin-dependent kinase 4/6 (CDK4/6), the compounds of the present disclosure may be used for treating or preventing a disease at least partially modulated by CDK4/6.

Abstract: The present disclosure discloses a compound as represented by formula (I) or a pharmaceutically acceptable salt, a solvate or an isomer thereof, a pharmaceutical composition and a pharmaceutical preparation comprising the same, and the application thereof in the field of medicine. As a selective inhibitor of cyclin-dependent kinase 4/6 (CDK4/6), the compound of the present disclosure may be used for treating or preventing a disease at least partially modulated by CDK4/6, such as breast cancer and colon cancer.