Abstract: A selenium-chelating pea oligopeptide, a preparation method thereof and use thereof. After the selenium-chelating pea oligopeptide is subjected to digestion treatment in at least one of following three ways, a change rate of selenium content not more than 3% with respect to the selenium content before the digestion treatment: hydrolyzing for 4 hours by a pepsin at a pH value of 2 and a temperature of 37° C.; hydrolyzing for 6 hours by a trypsin at a pH value of 7.5 and a temperature of 37° C.; maintaining the temperature constant at 37° C., firstly hydrolyzing for 4 hours by the pepsin at a pH value of 2, and then continuing to hydrolyze for 6 hours by a trypsin at a pH value of 6.8. The preparation method thereof includes mixing and reacting an aqueous solution of pea oligopeptide and sodium selenite, and then being subjected to alcohol precipitation and drying.

Abstract: Embodiments of the present application relate to a projection apparatus. The projection apparatus includes: a projection apparatus body; a projection unit, disposed on the projection apparatus body, and configured to project a projection picture; and an adjustment unit, disposed on the projection apparatus body and being movable relative to the projection apparatus body, wherein in response to moving to a first position relative to the projection apparatus body, the adjustment unit is configured to bear exit light from the projection unit, and adjust a projection direction of the exit light. The adjustment unit bears exit light from the projection unit and adjusts the projection direction of the exit light, such that a projection direction of the projection picture is adjusted.

Abstract: The present disclosure provides a projection apparatus. The projection apparatus includes: a projection body, a rotation platform, wherein the projection body is rotatably connected to the rotation platform; a first drive device, arranged on the projection apparatus and configured to drive the projection body to rotate relative to the rotation platform; a base, wherein the rotation platform is rotatably connected to the base; a second drive device, arranged on the base and configured to drive the rotation platform to rotate relative to the base; and a controller, arranged on the projection apparatus and configured to control the first drive device and the second drive device.

Abstract: The present disclosure provide a movable projection system and a projection device. The movable projection system includes a cabinet, a projection unit, a moving unit, an image acquisition unit, an interaction unit, a communication unit, and a control unit. The control unit is connected to the projection unit, the moving unit, the image acquiring unit, the interaction unit, and the communication unit, and configured to control, based on the interaction information of the communication unit, the input information of the interaction unit and the image information of the image acquisition unit, the projection unit to project the content and the moving unit to move.

Abstract: The present disclosure provides a projection apparatus. The projection apparatus includes: a projection body, a rotation platform, wherein the projection body is rotatably connected to the rotation platform; a first drive device, arranged on the projection apparatus and configured to drive the projection body to rotate relative to the rotation platform; a base, wherein the rotation platform is rotatably connected to the base; a second drive device, arranged on the base and configured to drive the rotation platform to rotate relative to the base; and a controller, arranged on the projection apparatus and configured to control the first drive device and the second drive device.

Abstract: The embodiments of the present disclosure, relating the technical field of projection display, provide a projection apparatus. A projection apparatus includes a projection unit, configured to project a projection image; a support frame, one end of the support frame being fixed to the projection unit; a regulation unit, suspended at the other end of the support frame; and a reflection unit, fixed to the regulation unit, and configured to reflect the projection image. A reflection direction of the reflection unit is regulated by regulating a rotation angle of the reflection unit, such that the reflection unit reflects the projection image to a target projection position.

Abstract: The present disclosure relates to a method and a device for implementing load balance of data center resources, and the method includes: obtaining current utilization ratios of properties of each physical machine in a scheduling domain, and determining, according to the current utilization ratios, physical machines that have residual capability satisfying a current allocation task, where the properties include a CPU load, a memory load and a network load; predicting a load degree of each of the physical machines on the assumption that the virtual machine is allocated by each of the physical machines; selecting, according to the predicted load degree of each of the physical machines, a physical machine from the physical machines to allocate the virtual machine. By adopting the solutions of the present disclosure, the problem of the load imbalance caused by the inconsistency of specification requirements of users and specifications of physical servers is solved.

Abstract: The present disclosure relates to a method and a device for implementing load balance of data center resources, and the method includes: obtaining current utilization ratios of properties of each physical machine in a scheduling domain, and determining, according to the current utilization ratios, physical machines that have residual capability satisfying a current allocation task, where the properties include a CPU load, a memory load and a network load;predicting a load degree of each of the physical machines on the assumption that the virtual machine is allocated by each of the physical machines; selecting, according to the predicted load degree of each of the physical machines, a physical machine from the physical machines to allocate the virtual machine. By adopting the solutions of the present disclosure, the problem of the load imbalance caused by the inconsistency of specification requirements of users and specifications of physical servers is solved.