Abstract: Disclosed are a liquid colored oil and a colored polyamide fiber. The liquid colored oil contains a colorant and a base oil agent. The base oil agent is a liquid at normal temperature and normal pressure, and a solubility parameter (SP) value thereof is 7.5 to 15.0. The colored polyamide fiber contains the aforementioned liquid colored oil. The liquid color oil can be stably added into polymers and dye them during the spinning process. The colored polyamide fiber has excellent spinning and dyeing properties.

Abstract: A self-powered wireless keyboard by modifying the structure of a traditional membrane keyboard having a volcanic crater structure. Not damaging the original membrane keyboard structure, a micro magnet core is installed inside a cylindrical protrusion block under the key cap as a mover of the induction power generation device, and an induction coil is wound in a key slot of the keyboard base as the stator of the induction power generation device. In this way, when each key is pressed, it will produce induction current. A layer of flexible solar cell can be laid on the upper surface of the key, which can generate electricity by collecting the light energy in the surrounding environment during the time of daily illumination.

Abstract: A virtual machine management method and apparatus, a device, and a readable storage medium. The virtual machine management method is applied to a private cloud, and comprises: acquiring a SELinux label, the SELinux label comprising five elements: User, Role, Type, Sensitivity, and Category (S101); setting elements other than Category in the SELinux label as default values (S102); assigning different values to Category according to a preset Category variable combination so as to obtain multiple non-duplicate label groups (S103); and configuring each label group to a virtual machine in the private cloud, so that virtual machines configured with the same label group communicate with each other, and virtual machines configured with different label groups are isolated from each other (S104).

Abstract: Provided are a heating structure and a steering wheel including the heating structure. The heating structure includes a substrate layer and a heating wire paved fixedly to the substrate layer by an adhesive. The heating wire is provided with multiple bent portions. The bent portions is in a shape formed by squeezing and bending the heating wire. The heating structure is configured to be arranged between a rim and an outer skin of a steering wheel. The heating structure is simpler in processing process, results in a higher yield and has a better heating effect. No scratches and visible veins will be created on the surface of the steering wheel, so that the product has an improved appearance.

Abstract: A method for increasing aroma and reducing fungal growth in vegetables and fruits is described. The method uses hexanal in a controlled atmosphere to treat the harvested fruit. The method has been found to be particularly effective for Penicillium sp. and Botrytis sp.