Abstract: The disclosure discloses an alginate lyase and application thereof, and belongs to the technical field of biology. The alginate lyase provided by the disclosure has high degradation activity, and the enzyme activity reaches 65 U/mg; the alginate lyase is stable in nature, and the enzyme activity remains 98% or higher of the initial enzyme activity after storage at 4° C. for 18 months; and the alginate lyase has high product specificity. The disclosure uses E. coli as a host to express the alginate lyase derived from V. natriegens, the obtained recombinant E. coli can produce the alginate lyase secreted extracellularly in a conventional LB medium without adding an induction substrate sodium alginate, so the downstream processing technology of protein is simplified, and the disclosure has great industrial application potential.

Abstract: The present disclosure relates to a display apparatus. The display apparatus may include a plurality of display units, each of the plurality of display units including at least one pixel, and a plurality of connectors that connect the plurality of display units to one another. The plurality of connectors and the plurality of display units may form a mesh distribution structure and, when the mesh distribution structure is stretched in a first direction, the mesh distribution structure may be configured to expand in a second direction perpendicular to the first direction.

Abstract: A mask plate includes a plurality of first supporting and shielding strips, and a plurality of second supporting and shielding strips. The second supporting and shielding strips and the first supporting and shielding strips perpendicularly intersect. The first supporting and shielding strips and the second supporting and shielding strips are provided with at least one objective supporting and shielding strip, and an edge of a predetermined surface of the objective supporting and shielding strip parallel to an extending direction of the objective supporting and shielding strip is provided with a thinned area; the thinned area extends in the extending direction of the objective supporting and shielding strip, and has a thickness smaller than a thickness of other areas except the thinned area; and the predetermined surface is a surface of the objective supporting and shielding strip facing a deposition material when a mask evaporation is performed through the mask plate.

Abstract: Embodiments of the disclosure provide systems and methods for performing motion transfer using a learning model. An exemplary system may include a communication interface configured to receive a first image including a first movable object and a second image including a second movable object. The system may also include at least one processor coupled to the communication interface. The at least one processor may be configured to extract a first set of motion features of the first movable object from the first image using a first encoder of the learning model and extract a first set of static features of the second movable object from the second image using a second encoder of the learning model. The at least one processor may also be configured to generate a third image by synthesizing the first set of motion features and the first set of static features.

Abstract: The present disclosure discloses a citrus fruit coloring retardant, and the citrus fruit coloring retardant is a prepared indole-3-acetic acid solution with a concentration of 1,000 ?M. The citrus fruit coloring retardant is prepared by weighing 3.504 g of indole-3-acetic acid powder, dissolving the powder in 10-15 mL of absolute ethanol, adding an obtained indole-3-acetic acid absolute ethanol solution to 20 L of sterilized distilled water, and mixing evenly to obtain the retardant. In addition, the present disclosure also provides a use method of the citrus fruit coloring retardant. The method for delaying color change of citrus fruits is reliable and stable and suitable for researches on mechanism of citrus fruits ripening in laboratory in laboratory and delay of fruit ripening in production. The citrus fruit coloring retardant is a natural plant hormone, also is low cost, environmentally friendly and non-toxic.

Abstract: A color conversion component and a display device. The color conversion component includes a light conversion layer including a black matrix, color conversion layers and concave-convex structure layers; the black matrix has a plurality of through holes arranged in an array; the color conversion layers are located within at least a portion of the through holes and capable of emitting a light in a wavelength range different than that of an incident light; and the concave-convex structure layers are arranged at least correspondingly in each of the through holes accommodating the color conversion layers, and each concave-convex structure layer is located on a light incident side of the light conversion layer and has a concave-convex structure surface facing towards the respective color conversion layer.

Abstract: A refrigerator comprises a refrigerator body, an air-conditioning membrane assembly and an air pump assembly. The refrigerator body defines a storage space and a compressor chamber therein, a storage container is arranged in the storage space, and a freshness-keeping space is defined inside the storage container. The air-conditioning membrane assembly is configured to allow more oxygen than nitrogen in airflow in a surrounding space of the air-conditioning membrane assembly to pass through the air-conditioning membrane and enter an oxygen-rich gas collection chamber. An inlet end of the air pump is communicated with the oxygen-rich gas collection chamber in a controlled manner via a pipeline and a pipeline switching mechanism, for pumping gas in the oxygen-rich gas collection chamber to the outside of the freshness-keeping space, such that the actual content of oxygen in the freshness-keeping space is in a range of 2% to 19%.

Abstract: An air-regulating freshness-preserving storage device comprises a container having a first storage space defined therein; and an oxygen removal device configured to remove a part or all of oxygen in air in the first storage space, so as to obtain the air rich in nitrogen, low in oxygen, and favorable for food preservation.

Abstract: The disclosure discloses a method for producing maltodextrin with a single polymerization degree by multienzyme coupling, and belongs to the technical field of biology. The disclosure provides a method for producing non-reducing maltodextrin with a uniform and low polymerization degree. After a reaction is preformed for 2-6 hours by using the method of the disclosure, the content of 4-O-?-maltohexaosyl ?-D-glucoside in a reaction solution can be as high as 57.2% to 77.3%, accounting for 50% to 90% of the total amount of maltodextrin in the reaction solution. In maltodextrin prepared by using the method of the disclosure, non-reducing maltodextrin with low polymerization degree only includes 4-O-?-maltohexaosyl ?-D-glucoside, and the content of non-reducing maltodextrin with low polymerization degree can be 50% to 90% of the total amount of maltodextrin.

Abstract: Methods and terminal devices, including computer programs encoded on computer storage media, for selecting a server node. According to one of the methods, a terminal device first sends a connection request to one server node, and then sends a connection request to another server node after a time interval T. The terminal device first sends a connection request to a first server node. If the terminal device receives, within a first preset duration T, response information fed back by the first server node, the terminal device does not need to send a connection request to another server node. This helps save resources. In addition, the terminal device may establish a connection to a server node corresponding to received response information, and does not need to wait for feedback from another server node. This helps reduce a delay in establishing a connection between the terminal device and a server node.

Abstract: The present invention relates to copolymer formulations of poly(itaconic acid-co-2-acrylamido-2-methylpropane sulfonic acid) for dishwasher detergent compositions with a controlled amount of a second polymeric component.

Abstract: The present invention provides a refrigeration and freezing device, including a case body, a door body, an oxygen-enrichment membrane assembly, an air pump, and a refrigeration system. For the refrigeration and freezing device, temperature within an appropriate storage range and a nitrogen-rich and oxygen-deficient atmosphere cooperate, thereby effectively extending the shelf life of foods.

Abstract: An approach is provided for generating a scaling plan. Plans for onboarding first tenant(s) a cloud computing environment and offboarding second tenant(s) of the cloud computing environment are received. Historical data about behavior of tenants of the cloud computing environment is received. Based on the received plans and the historical data, a scaling plan for scaling computer resources of external systems during the onboarding and the offboarding is generated. The scaling plan specifies a timeline indicating dates and times at which changes in workloads associated with the external systems are required for the onboarding and the offboarding. Based on the scaling plan, a scaling is determined to be needed for computer resource(s) of one of the external systems. Responsive to determining that the scaling is needed, the scaling for the computer resource(s) is triggered at a date and a time indicated by the timeline.

Abstract: A method, computer system, and computer program product for calculating a group chat segment duration is provided. The embodiment may include capturing a plurality of group chat messages from a chat message repository. The embodiment may also include determining a probability distribution based on analyzing the captured group chat messages over a time vector. The embodiment may further include calculating a time parameter based on the determined probability distribution. The embodiment may also include calculating a content parameter based on one or more relevant chat topics. The embodiment may further include calculating an attendee parameter based on a plurality of attendees and one or more attendee associations. The embodiment may also include determining a chat duration prediction based on the calculated time parameter, the calculated content parameter, and the calculated attendee parameter.

Abstract: An approach is provided for generating a scaling plan. Plans for onboarding first tenant(s) a cloud computing environment and offboarding second tenant(s) of the cloud computing environment are received. Historical data about behavior of tenants of the cloud computing environment is received. Based on the received plans and the historical data, a scaling plan for scaling computer resources of external systems during the onboarding and the offboarding is generated. The scaling plan specifies a timeline indicating dates and times at which changes in workloads associated with the external systems are required for the onboarding and the offboarding. Based on the scaling plan, a scaling is determined to be needed for computer resource(s) of one of the external systems. Responsive to determining that the scaling is needed, the scaling for the computer resource(s) is triggered at a date and a time indicated by the timeline.

Abstract: A method and apparatus for defending against a DNS attack includes receiving a DNS request from a request source and obtaining an IP address of the request source, calculating a characteristic value of the IP address, and searching an internal memory for preset identifier information corresponding to the characteristic value. Based on the preset identifier information corresponding to the characteristic value being a detection identifier indicating an uncertainty of an existence of an attack risk in the DNS request, the method includes obtaining request record information and an unblocking time corresponding to the characteristic value, the request record information including a number of request times from the request source in a predetermined period. Based on the number of request times exceeding a preset request threshold, determining that the DNS request is an attack request and discarding the DNS request.

Abstract: A financial transaction management, method, storage medium and server, the server comprise a client terminal and a server, the client terminal is configured to receive an account login request inputted by a user, and transmit the account login request to the server; the server is configured to receive the account login request, and judge whether there exists a dedicated account corresponding to the dedicated account ID, and transmit a first control signal to the client terminal when there exists the dedicated account; the client terminal is further configured to receive the first control signal and enter a dedicated account interface according to the first control signal, receive a first transaction request inputted by the user and transmit the first transaction request to the server; the first transaction request includes the dedicated account information and transaction information associated with the dedicated account ID; the server is further configured to receive the first transaction request, and accomp

Abstract: A refrigerator comprises a refrigerator body, an air-conditioning membrane assembly and an air pump assembly. The refrigerator body defines a storage space and a compressor chamber therein, a storage container is arranged in the storage space, and a freshness-keeping space is defined inside the storage container. The air-conditioning membrane assembly is provided with at least one air-conditioning membrane and an oxygen-rich gas collection chamber and configured to allow more oxygen than nitrogen in airflow in a surrounding space of the air-conditioning membrane assembly to pass through the air-conditioning membrane and enter the oxygen-rich gas collection chamber. An air pump pumps gas in the oxygen-rich gas collection chamber to the outside of the freshness-keeping space, such that a ratio of the content of nitrogen in the freshness-keeping space to the content of oxygen in the freshness-keeping space is greater than 78/21.

Abstract: Methods and systems for selecting a tool for a project is described. In an example, a processor can run a machine learning model to generate a set of requirements to implement a project. The processor can identify a keyword from the set of requirements. The processor can search for the keyword on a search engine. The processor can receive a search result from the search engine corresponding to the keyword. The processor can identify, based on the search result, a tool that can be used to implement the project, where the tool can be in compliance with the set of requirements.

Abstract: Provided is a refrigerating and freezing device. The refrigerating and freezing device comprises a cabinet body with a first storage space defined therein, an oxygen-enriched membrane assembly and an air extraction device. A storage container in which an atmosphere-controlled freshness-keeping space is formed is disposed in the first storage space. The oxygen-enriched membrane assembly is provided with at least one oxygen-enriched membrane and an oxygen-enriched gas collection chamber. The air extraction device is communicated with the oxygen-enriched gas collection chamber through a pipeline to extract and discharge the gas that permeates into the oxygen-enriched gas collection chamber out of the storage container. The refrigerating and freezing device not only has good freshness-keeping performance, but also has relatively low requirements on the rigidity and strength of the storage container. Besides, it is small in size and low in noise, and it is suitable for household and individual use.