Abstract: An iridium complex for an organic light-emitting device includes the chemical structural formula shown below, where the ring A is selected from C12-C30 polycyclic groups formed by fusing three or more monocyclic groups with each other, and the precondition is that the ring A at least includes the structure of general formula II: R1-R5 are the same or different, and each independently is H, deuterium, halogen, —CF3, CN, amino, substituted or unsubstituted C1-C10 alkoxyl, or substituted or unsubstituted C1-C30 alkyl, hydrogens on the alkyl chain of the C1-C10 alkoxyl and C1-C30 alkyl may each be independently substituted by deuterium, halogen, —CF3 or CN, where the halogen is selected from fluorine, chlorine, bromine or iodine; Rx and Ry are the same or different, and each independently includes saturated aliphatic ring structure. The iridium complex has excellent red-light saturation, luminous efficiency and thermal stability.

Abstract: Disclosed in the present application are a concrete protection material, and a preparation method and a construction method therefor. The concrete protection material consists of 50%-90% of a component A and 10%-50% of a component B in percentage by weight, where the component A is prepared from 30%-65% of organic silicon, 2%-5% of nano-silicon dioxide and the balance of an organic solvent in percentage by weight; and the component B is prepared from 20%-50% of an organic base and the balance of water in percentage by weight. The present application not only can form nano-particles having a strengthening effect in capillary channels of a concrete surface layer, but also can achieve a technical effect of superhydrophobicity on the concrete surface layer.

Abstract: The present disclosure relates to a voice shopping method, device, and a computer-readable storage medium, and relates to the field of voice recognition technology. The method includes: receiving a query instruction from a user by voice, and performing semantic recognition on the query instruction to determine one or more keywords of query content of the user; determining a search range of the keywords according to one or more shopping behavior records of the user; searching the keywords within the search range to obtain commodity information related to the query content, and performing voice output; and receiving an ordering instruction from the user by voice, and performing semantic recognition on the ordering instruction to determine whether an order is made.

Abstract: The present disclosure relates to a voice shopping method, device, and a computer-readable storage medium, and relates to the field of voice recognition technology. The method includes: receiving a query instruction from a user by voice, and performing semantic recognition on the query instruction to determine one or more keywords of query content of the user; determining a search range of the keywords according to one or more shopping behavior records of the user; searching the keywords within the search range to obtain commodity information related to the query content, and performing voice output; and receiving an ordering instruction from the user by voice, and performing semantic recognition on the ordering instruction to determine whether an order is made.

Abstract: A hair styling device is described that has a handle, an elongated, substantially cylindrical, heatable rod providing a curling surface and supported by the handle, a heater for heating the curling surface, a support spaced apart from the curling surface, and a rotatable member rotatable relative to the curling surface for wrapping hair around and in contact with the curling surface. The device has an opening in the rotatable member for receiving a section of a user's hair, a motor for rotating the rotatable member, and a flexible, heat-resistant clamp supported by the support and extending from the support toward the curling surface for clamping hair against the curling surface.

Abstract: A hair styling device is described that has a handle, an elongated, substantially cylindrical, heatable rod providing a curling surface and supported by the handle, a heater for heating the curling surface, a support spaced apart from the curling surface, and a rotatable member rotatable relative to the curling surface for wrapping hair around and in contact with the curling surface. The device has an opening in the rotatable member for receiving a section of a user's hair, a motor for rotating the rotatable member, and a flexible, heat-resistant clamp supported by the support and extending from the support toward the curling surface for clamping hair against the curling surface.

Abstract: A hair styling device is described that has a handle, an elongated, substantially cylindrical, heatable rod providing a curling surface and supported by the handle, a heater for heating the curling surface, a support spaced apart from the curling surface, and a rotatable member rotatable relative to the curling surface for wrapping hair around and in contact with the curling surface. The device has an opening in the rotatable member for receiving a section of a user's hair, a motor for rotating the rotatable member, and a flexible, heat-resistant clamp supported by the support and extending from the support toward the curling surface for clamping hair against the curling surface.