Abstract: Methods and computer systems for storing a query plan in a cache are provided. The method can include: determining a use frequency of the query plan; determining a target storage layer for storing the query plan based on the determined use frequency, wherein the cache includes at least two storage layers and each of the storage layers is associated with a compression level of query plans; processing the query plan according to the compression level of the target storage layer; and storing the processed query plan in the target storage layer.

Abstract: The invention provides a gas distribution system comprising a plurality of flow passages in fluid communication with a gas source, each flow passage having disposed therein a number of nozzles, wherein at least a portion of said nozzles are fitted with a sintered metal filter.

Abstract: The disclosure relates to a synthesis method of long carbon chain semi-aromatic nylon. The synthesis method comprises the following steps: mixing a wet powdery nylon salt, an antioxidant, a catalyst, a surfactant and pellets, and carrying out a one-step solid state polymerization under dynamic mixing to obtain a powdery nylon; under dynamic mixing, enabling the pellets to promote the stirring and mixing of the material and reducing material adhesion to the wall; the one-step solid state polymerization comprises a pre-solid state polymerization and a post-solid state polymerization; in the pre-solid state polymerization, ensuring the nylon salt and the prepolymer not to be molten; in the post-solid state polymerization, gradually reducing the system pressure to vacuum, and keeping the system pressure in vacuum state for at least 1 hour; the temperature of the post-solid state polymerization is not lower than the termination temperature of the pre-solid state polymerization.

Abstract: An electron ptychography method and an electron ptychography apparatus for automatically correcting a mistilt of a zone axis of a sample.

Abstract: Techniques are provided for using machine learning techniques to associate skills with different content. In one technique, multiple classifications models are trained. Each classification model corresponds to a different skill and is trained based on textual embeddings of a plurality of content items and labels indicating whether each content item is associated with the skill that corresponds to that classification model. A particular content item embedding is generated based on text from a particular content item. The particular content item embedding is applied to the classification models to generate multiple results. One or more results of the multiple results are identified that indicate that one or more corresponding skills are associated with the particular content item. For each result of the one or more results, skill tagging data are stored that associate the particular content item with a particular skill that corresponds to that result.

Abstract: A reactor and a process for fluid catalytic cracking (FCC) a hydrocarbon feed in the riser-reactor, the process including injecting the hydrocarbon feed into an evaporation zone of the riser-reactor, injecting a first catalyst into the evaporation zone, wherein the first catalyst mixes with the hydrocarbon feed to generate a hydrocarbons stream in the evaporation zone, and wherein the temperature in the evaporation zone is less than 625° C., and passing the hydrocarbons stream from the evaporation zone into a cracking zone of the riser-reactor to generate a cracked product in the cracking zone.

Abstract: The disclosure relates to a synthesis method of long carbon chain semi-aromatic nylon. The synthesis method comprises the following steps: mixing a wet powdery nylon salt, an antioxidant, a catalyst, a surfactant and pellets, and carrying out a one-step solid state polymerization under dynamic mixing to obtain a powdery nylon; under dynamic mixing, enabling the pellets to promote the stirring and mixing of the material and reducing material adhesion to the wall; the one-step solid state polymerization comprises a pre-solid state polymerization and a post-solid state polymerization; in the pre-solid state polymerization, ensuring the nylon salt and the prepolymer not to be molten; in the post-solid state polymerization, gradually reducing the system pressure to vacuum, and keeping the system pressure in vacuum state for at least 1 hour; the temperature of the post-solid state polymerization is not lower than the termination temperature of the pre-solid state polymerization.

Abstract: Techniques are provided for using machine learning techniques to associate skills with different content. In one technique, multiple classifications models are trained. Each classification model corresponds to a different skill and is trained based on textual embeddings of a plurality of content items and labels indicating whether each content item is associated with the skill that corresponds to that classification model. A particular content item embedding is generated based on text from a particular content item. The particular content item embedding is applied to the classification models to generate multiple results. One or more results of the results are identified that indicate that one or more corresponding skills are associated with the particular content item. For each result of the one or more results, skill tagging data is stored that associates the particular content item with a particular skill that corresponds to that result.

Abstract: The present application is used in the technical field of beautifying and hair conditioning, and provides a vapor beautifying and hair conditioning machine comprising a main machine and an ejection gun; wherein, the ejection gun is communicated with the main machine via a hose, the main machine is provided with a socket, and one end of the hose is provided with a plug that is capable of being inserted in the socket; the socket is provided therein with a hose connector male end and a latching groove, the plug is provided therein with a hose connector female end and a latching member, and the hose connector male end and the hose connector female end engage with each other; when the plug is inserted in the socket, the latching member is inserted and held in the latching groove.

Abstract: An injector for co-feeding liquid and solid fuels into a gasifier is provided. The injector includes a body, a first member, and a second member. The body comprises a first channel for conveying a liquid fuel. The first member surrounds the body to define a second channel for pneumatically conveying a solid fuel. The second member surrounds the first member to define a third channel for conveying a fluid stream for dispersing the solid fuel. The liquid fuel is atomized before being mixed with the solid fuel. A method for co-feeding liquid and solid fuels is also presented.

Abstract: The present application is used in the technical field of beautifying and hair conditioning, and provides a vapor beautifying and hair conditioning machine comprising a main machine and an ejection gun; wherein, the ejection gun is communicated with the main machine via a hose, the main machine is provided with a socket, and one end of the hose is provided with a plug that is capable of being inserted in the socket; the socket is provided therein with a hose connector male end and a latching groove, the plug is provided therein with a hose connector female end and a latching member, and the hose connector male end and the hose connector female end engage with each other; when the plug is inserted in the socket, the latching member is inserted and held in the latching groove.

Abstract: A system for gasification of a solid powder is provided. The system comprises one or more conveying tanks configured to receive a solid powder and one or more solid pumps disposed downstream of and in fluid communication with the one or more respective conveying tanks. The system further comprises a gasifier disposed downstream of and in fluid communication with the one or more solid pumps. A conveyance unit and a method for conveyance and gasification of a solid powder are also presented.

Abstract: The present application is used in the technical field of beautifying and hair conditioning, and provides a vapor beautifying and hair conditioning machine comprising an ejection gun, wherein the ejection gun is provided with a heating boiler, the heating boiler is provided therein with a heater and a flowing channel configured to allow water to flow, an entrance of the flowing channel and an exit of the flowing channel are disposed at two ends of the heating boiler respectively, the flowing channel is provided therein with a plurality of damping members, and each damping member includes a spring and at least one retainer disposed at one end of the spring.

Abstract: A system for use in a gasification system comprises an increasing pitch screw feeder and a high-pressure vessel disposed about said increasing pitch screw feeder. The high-pressure vessel comprises an inlet for connection to an outlet of a solid pump and a conveyance gas line and an outlet through which solid fuel delivered from the solid pump is transported to a gasifier. The outlet is downstream of the solid pump and the conveyance gas line.

Abstract: An injector for co-feeding liquid and solid fuels into a gasifier is provided. The injector includes a body, a first member, and a second member. The body comprises a first channel for conveying a liquid fuel. The first member surrounds the body to define a second channel for pneumatically conveying a solid fuel. The second member surrounds the first member to define a third channel for conveying a fluid stream for dispersing the solid fuel. The liquid fuel is atomized before being mixed with the solid fuel. A method for co-feeding liquid and solid fuels is also presented.

Abstract: A system for gasification of a solid powder is provided. The system comprises one or more conveying tanks configured to receive a solid powder and one or more solid pumps disposed downstream of and in fluid communication with the one or more respective conveying tanks. The system further comprises a gasifier disposed downstream of and in fluid communication with the one or more solid pumps. A conveyance unit and a method for conveyance and gasification of a solid powder are also presented.

Abstract: A system for use in a gasification system comprises an increasing pitch screw feeder and a high-pressure vessel disposed about said increasing pitch screw feeder. The high-pressure vessel comprises an inlet for connection to an outlet of a solid pump and a conveyance gas line and an outlet through which solid fuel delivered from the solid pump is transported to a gasifier. The outlet is downstream of the solid pump and the conveyance gas line.

Abstract: A system for use in a gasification system, comprises a solid pump that delivers a pressurized fuel and a high-pressure transition vessel. The transition vessel comprises a first inlet connected to an outlet of the solid pump so that all of the fuel from the solid pump passes through the transition vessel, a second inlet for connection to a conveyance gas line, and an outlet through which the fuel is transported to a gasifier. The transition vessel is elongated in the direction of a flow so that a conveyance gas introduced through said conveyance gas line plus the pressure difference carries the fuel to the gasifier.

Abstract: Disclosed herein are unmixed fuel processors and methods for using the same. In one embodiment, an unmixed fuel processor comprises: an oxidation reactor comprising an oxidation portion and a gasifier, a CO2 acceptor reactor, and a regeneration reactor. The oxidation portion comprises an air inlet, effluent outlet, and an oxygen transfer material. The gasifier comprises a solid hydrocarbon fuel inlet, a solids outlet, and a syngas outlet. The CO2 acceptor reactor comprises a water inlet, a hydrogen outlet, and a CO2 sorbent, and is configured to receive syngas from the gasifier. The regeneration reactor comprises a water inlet and a CO2 stream outlet. The regeneration reactor is configured to receive spent CO2 adsorption material from the gasification reactor and to return regenerated CO2 adsorption material to the gasification reactor, and configured to receive oxidized oxygen transfer material from the oxidation reactor and to return reduced oxygen transfer material to the oxidation reactor.