Abstract: A cleaning system includes a cleaning device, a tray, a charging assembly, a body and a floor brush assembly. The floor brush assembly has rollers which rotate around an X-axis, and can rotate at least in the X-axis direction relative to the body. The charging assembly has a male charging end and a female charging end, wherein one of the male charging end and the female charging end is provided on the body, and the other is provided on the tray. Opposite sides of the male charging end have first electrode sheets and the female charging end has corresponding second electrode sheets. The body of the cleaning system, the body rotates such that the location of the first electrode sheets of the male charging end avoid a problem of poor contact with second electrode sheets of the female charging end.

Abstract: The present disclosure provides a data reading method and device for a database and storage medium, which includes: receiving a query condition for a Value column in an LSM-Tree database; querying first alternative data with Value meeting the query condition from the LSM-Tree database; constructing a right table according to Key of the first alternative data, taking total data in the LSM-Tree database as a left table, and carrying out Semi Join based on the left table and the right table, so as to acquire second alternative data matched with each Key of the right table from the left table; querying target data with Value meeting the query condition from the second alternative data. The present disclosure can realize a predicate pushdown function of an LSM-Tree database in Merge-On-Read scene, in which, a large amount of data scanning is avoided while write performance and query performance are balanced.

Abstract: A light strip is disclosed. The light strip includes a light source and a rubber sleeve accommodating the light source. The rubber sleeve includes an inner light-transmitting layer, an outer light-transmitting layer, and a color strip arranged between the inner light-transmitting layer and the outer light-transmitting layer, and the color strip and at least one of the inner light-transmitting layer and the outer light-transmitting layer are light-transmitting in different colors. The light strip provided by the present disclosure can simplify the production process, reduce the cost, and provide different lighting modes, so that the requirement is met.

Abstract: The present disclosure relates to a database-based data processing method, device, medium, and apparatus, the method including: receiving a target query statement; determining a corresponding target materialized view for executing the target query statement according to a data query time corresponding to the target query statement and a time granularity of the materialized view in a database, wherein the database is constructed with the materialized view at different time granularities; rewriting the target query statement according to the time granularity of the target materialized view to obtain a plurality of target sub-query statements, wherein the target sub-query statements include sub-query statements which are queried based on the target materialized view; and merging the target sub-query statements, and performing a data query according to a query statement obtained by merging.

Abstract: The embodiment of the present disclosure provides a cleaning device, which includes a power module, a vacuum cleaner module, and a surface wet cleaner module. The power module includes a power assembly and a motor assembly that are connected to each other. The vacuum cleaner module includes an air suction assembly, a dust collection assembly, and a filter assembly that are sequentially communicated, and the vacuum cleaner module has a first mounting position that is configured to be connected and matched with the power module. The surface wet cleaner module includes a floor brush and a body, and the body has a second mounting position that is configured to be connected and matched with the power module.

Abstract: The present invention relates to an organic compound, an organic electroluminescent material, and an organic electroluminescent element. The structural formula of the compound is shown in formula (I). When the organic compound of the present invention is used for preparing an organic electroluminescent element, the electron mobility, thermal stability, and luminescent characteristics are excellent; and the organic compound can be applied to an organic layer of the organic electroluminescent element. The organic compound of the present invention has a relatively good film-forming property; and when same is applied to an electron transport layer and an electron transport auxiliary layer, an organic electroluminescent element, which has a lower driving voltage, a higher light emission efficiency, and a longer service life than existing electron transport materials, can be manufactured, and thus, a full-color display panel with having improved performance and a prolonged service life can be manufactured.

Abstract: The present invention relates to a metal complex, an organic electroluminescent element containing same, and a consumer product. The metal complex of the present invention is used as a luminescent material to obtain a green phosphorescent material with a high luminescent efficiency. In addition, the prepared luminescent material has a good thermal stability. The organic electroluminescent element of the present invention emits a green phosphorescence and has advantages of a narrow emission spectrum, a high stability, and a high efficiency. An electronic device comprising the organic electroluminescent element of the present invention can enable a consumer product having green electroluminescence and an improved luminous efficiency.

Abstract: The present invention relates to an organic compound, an organic electroluminescent material, and an organic electroluminescent element. The structural formula of the compound is shown in formula (I). When the organic compound of the present invention is used for preparing an organic electroluminescent element, the electron mobility, thermal stability, and luminescent characteristics are excellent; and the organic compound can be applied to an organic layer of the organic electroluminescent element. The organic compound of the present invention has a relatively good film-forming property; and when same is applied to an electron transport layer and an electron transport auxiliary layer, an organic electroluminescent element, which has a lower driving voltage, a higher light emission efficiency, and a longer service life than existing electron transport materials, can be manufactured, and thus, a full-color display panel with having improved performance and a prolonged service life can be manufactured.

Abstract: The present invention discloses an optimization method for a screen surface dynamic load of a vibrating screen. The method includes the following steps: step 1. selecting design variables, and establishing an experimental matrix; step 2. performing a response curved surface experiment; step 3. establishing two double-objective optimization models and solving the same to obtain two groups of Pareto solution sets, wherein the solution sets respectively represent screening efficiency optimization paths of the vibrating screen under the conditions of a high screen surface dynamic load and a low screen surface dynamic load; and step 4. calculating an optimization space for a screen surface dynamic load under a high screening efficiency. According to the method of the present invention, the screen surface dynamic load can be directly reduced, and the service life of the screen surface and the whole vibrating screen is prolonged.

Abstract: The present invention discloses an optimization method for a screen surface dynamic load of a vibrating screen. The method includes the following steps: step 1. selecting design variables, and establishing an experimental matrix; step 2. performing a response curved surface experiment; step 3. establishing two double-objective optimization models and solving the same to obtain two groups of Pareto solution sets, wherein the solution sets respectively represent screening efficiency optimization paths of the vibrating screen under the conditions of a high screen surface dynamic load and a low screen surface dynamic load; and step 4. calculating an optimization space for a screen surface dynamic load under a high screening efficiency. According to the method of the present invention, the screen surface dynamic load can be directly reduced, and the service life of the screen surface and the whole vibrating screen is prolonged.

Abstract: There is provided an imidazole derivative, wherein the structural formula of the imidazole derivative is as represented by formula I: There is further provided a material containing the imidazole derivative and an organic light-emitting device containing the imidazole derivative. The imidazole derivative has an excellent carrier transport capacity, and the organic light-emitting device produced by using the material has obviously reduced starting voltage and improved luminous efficiency and luminance; and due to the features such as relatively good film-forming performance and simple material synthesis and purification methods which are applicable to mass production, the imidazole derivative is an ideal option for an electron transport material of organic light-emitting devices.

Abstract: The present invention relates to an organic electroluminescent material, an organic electroluminescent device, and a method for preparing the organic electroluminescent device. Due to comprising an organic compound A with 3.0 eV>ET?2.0 eV and a compound B of M(LA)x(LB)y(LC)z, the organic electroluminescent material of the present invention has the advantages of an increased luminescence lifetime and/or a reduced operating voltage on the basis of maintaining other electronic properties at a certain level.

Abstract: An aerosol generating product includes an aerosol atomizing element and a smoke cooling element, and the smoke cooling element is located downstream of the flow direction of the smoke generated by the aerosol atomizing element. A filter element is located downstream of the flow direction of the smoke through which the smoke cooling element passes; or a hollow element located upstream of the flow direction of the smoke through which the smoke cooling element passes. The smoke cooling element is composed of particles, and the structure includes a gap for smoke of a cigarette to pass through. The gap through which cigarette smoke can pass is a three-dimensional and non-linear gap. The structure is in the form of rods. When the smoke aerosol passes through the cooling element, ensuring the smoke to pass through smoothly.

Abstract: The present invention provides a pyrido five-element aromatic ring compound, and a preparation method therefor and a use thereof. The compound provided in the present invention has an inhibitory effect on wild-type and/or mutant EZH2, and is well positioned to become a novel anti-tumor drug or a drug for the treatment of autoimmune diseases.

Abstract: The present invention relates to an organic electroluminescent material, an organic electroluminescent device, and a method for preparing the organic electroluminescent device. Due to comprising an organic compound A with 3.0 eV>ET?2.0 eV and a compound B of M(LA)x(LB)y(LC)z, the organic electroluminescent material of the present invention has the advantages of an increased luminescence lifetime and/or a reduced operating voltage on the basis of maintaining other electronic properties at a certain level.

Abstract: Provided in the present invention are a compound having the effects of preventing and treating diseases related to IDH mutation, and a preparation method and use thereof.

Abstract: There is provided an imidazole derivative, wherein the structural formula of the imidazole derivative is as represented by formula There is further provided a material containing the imidazole derivative and an organic light-emitting device containing the imidazole derivative. The imidazole derivative has an excellent carrier transport capacity, and the organic light-emitting device produced by using the material has obviously reduced starting voltage and improved luminous efficiency and luminance; and due to the features such as relatively good film-forming performance and simple material synthesis and purification methods which are applicable to mass production, the imidazole derivative is an ideal option for an electron transport material of organic light-emitting devices.

Abstract: Disclosed are a method for preparing a series of carbazole derivatives and use thereof in organic light-emitting diodes. The structure of the material is as shown in Formula I. An organic electroluminescent device prepared by the material can have a significantly improved power efficiency and an external quantum efficiency for the device and an extended life for an orange light or red light device; moreover, the material has characteristics, for example, methods for the synthesis and purification of the material are simple and suitable for large-scale production, and is an ideal choice as a luminescent material for organic electroluminescent devices. The use of the organic electroluminescent diode material as a carrier transport material or as a luminescent material alone or as a host material in a light-emitting layer also falls within the scope of protection.

Abstract: The present invention provides an indazole compound as a FGFR kinase inhibitor, preparation and use thereof. Specifically, the present invention provides a compound represented by formula (I), wherein the definitions of each group are described in the specification. The compound of the present invention has good FGFR kinase-inhibiting activity, and can be used in preparing a series of medicines for treating FGFR kinase activity related diseases.

Abstract: The present invention provides a pyrido five-element aromatic ring compound, and a preparation method therefor and a use thereof. The compound provided in the present invention has an inhibitory effect on wild-type and/or mutant EZH2, and is well positioned to become a novel anti-tumor drug or a drug for the treatment of autoimmune diseases.