Abstract: Provided is a method for preparing Rebaudioside C using an enzymatic method, comprising using rubusoside or dulcoside A as a substrate, and making the substrate, in the presence of a glycosyl donor, react under the catalysis of UDP-glycosyltransferase-containing recombinant cell and/or UDP-glycosyltransferase prepared therefrom to generate Rebaudioside C.

Abstract: Provided is a method for preparing rebaudioside N using an enzymatic method, comprising using rebaudioside A or rebaudioside J as a substrate, and making the substrate, in the presence of a glycosyl donor, react under the catalysis of a UDP-glycosyl-transferase and/or a UDP-glycosyltransferase-containing recombinant cell to generate rebaudioside N.

Abstract: Provided is a method for preparing Rebaudioside J using an enzymatic method, comprising using rebaudioside A as a substrate, and making the substrate, in the presence of a glycosyl donor, react under the catalysis of a UDP-glycosyltransferase-containing recombinant cell and/or UDP-glycosyltransferase prepared therefrom to generate Rebaudioside J.

Abstract: Disclosed is an intelligent scheduling table generation method based on multi-source data analysis of buses, including following steps: integrating business data and cashier data of a bus scheduling system, analyzing the running situation of each line by using an intelligent scheduling algorithm, calculating passenger flow data of boarding and dropping off buses according to cashier data of card swiping for boarding buses, and scientifically and reasonably obtaining the data of each line in the intelligent scheduling table, such as of the number of upgoing and downgoing vehicles, departure time periods, planned shifts, planned circle time, so as to obtain the intelligent scheduling table which accords with the characteristics of morning, midday and evening peak of each line and adjusts the departure interval in real time according to the actual running situation of the lines.

Abstract: Disclosed is an intelligent scheduling table generation method based on multi-source data analysis of buses, including following steps: integrating business data and cashier data of a bus scheduling system, analyzing the running situation of each line by using an intelligent scheduling algorithm, calculating passenger flow data of boarding and dropping off buses according to cashier data of card swiping for boarding buses, and scientifically and reasonably obtaining the data of each line in the intelligent scheduling table, such as of the number of upgoing and downgoing vehicles, departure time periods, planned shifts, planned circle time, so as to obtain the intelligent scheduling table which accords with the characteristics of morning, midday and evening peak of each line and adjusts the departure interval in real time according to the actual running situation of the lines.

Abstract: The present invention relates to a polyurethane foam composite panel for thermal insulation and a method for preparing the composite panel. The composite panel comprises two surface layers and a polyurethane foam layer located therebetween, wherein the polyurethane foam is prepared from the reaction system consisting of various components such as polyisocyanate, polyol, blowing agent and catalyst package. The blowing agent comprises cis-1,1,1,4,4,4-hexafluoro-2-butene (HFO-1336mzz-Z) and cyclopentane. The polyurethane foam composite panel according to the present invention shows both good insulation performance and mechanical strength.

Abstract: It is described a location based interactive method, user terminal, server, system and computer storage medium, which relate to the field of computers. The method includes: it is send a geographic coordinate of a user's location to a location server; it is received from the location server and displayed a POI list containing at least one POI corresponding to the geographic coordinate; it is acquired a group creating instruction, and a group creating request is sent to a login server based on the group creating instruction; and interaction is performed with the login server based on a group to provide the user with an intra-group interactive service, where the group is created by the login server based on the POI carried in the group creating request.

Abstract: The present invention relates to an isocyanate reactive component comprising a specific polyol mixture useful for the preparation of homogenous reactive polyurethane compositions. The invention further relates to a reactive polyurethane composition comprising such isocyanate reactive component and an isocyanate component. It also relates to a homogeneous polyurethane foam having good mold release property and surface quality prepared from such reactive polyurethane compositions. In a further aspect, it relates to a polyurethane composite comprising such homogenous polyurethane foam and having good and flat surface appearance after processing.

Abstract: A polyurethane composite element has one or more gaps containing a polyurethane foam. The polyurethane foam has a density of 16-40 kg/m3 and a closed cell proportion of 50-90% determined according to ASTM D6226-2010 Standard Test Method. The polyurethane foam is formed by applying a polyurethane composition into the gaps in situ. A process for producing a polyurethane composite element is also described.

Abstract: The present invention relates to an isocyanate reactive component comprising a specific polyol mixture useful for the preparation of homogenous reactive polyurethane compositions. The invention further relates to a reactive polyurethane composition comprising such isocyanate reactive component and an isocyanate component. It also relates to a homogeneous polyurethane foam having good mold release property and surface quality prepared from such reactive polyurethane compositions. In a further aspect, it relates to a polyurethane composite comprising such homogenous polyurethane foam and having good and flat surface appearance after processing.

Abstract: It is described a location based interactive method, user terminal, server, system and computer storage medium, which relate to the field of computers. The method includes: it is send a geographic coordinate of a user's location to a location server; it is received from the location server and displayed a POI list containing at least one POI corresponding to the geographic coordinate; it is acquired a group creating instruction, and a group creating request is sent to a login server based on the group creating instruction; and interaction is performed with the login server based on a group to provide the user with an intra-group interactive service, where the group is created by the login server based on the POI carried in the group creating request.

Abstract: It is described a location based interactive method, user terminal, server, system and computer storage medium, which relate to the field of computers. The method includes: it is send a geographic coordinate of a user's location to a location server; it is received from the location server and displayed a POI list containing at least one POI corresponding to the geographic coordinate; it is acquired a group creating instruction, and a group creating request is sent to a login server based on the group creating instruction; and interaction is performed with the login server based on a group to provide the user with an intra-group interactive service, where the group is created by the login server based on the POI carried in the group creating request.

Abstract: The present invention provides a process for preparing a polymer material filled composite element, comprising the steps of: i) providing a partially closed space, wherein a polyurethane foam is disposed at least at part of the periphery of the space to restrain the flow of the polymer material resin, and the polyurethane foam is formed by in situ application of a polyurethane composition and has an air flow value of greater than 1 L/min as determined by ASTM D3574 test; ii) applying the polymer material resin into the space and curing the polymer material resin to form a polymer material that fills the space.

Abstract: A polyurethane composite element has one or more gaps containing a polyurethane foam. The polyurethane foam has a density of 16-40 kg/m3 and a closed cell proportion of 50-90% determined according to ASTM D6226-2010 Standard Test Method. The polyurethane foam is formed by applying a polyurethane composition into the gaps in situ. A process for producing a polyurethane composite element is also described.

Abstract: A method and device for providing user information, and computer storage medium are provided. In the method, acquire information relating to user position of a user, and acquire a point of interest associated with the user position. Then, acquire other users who have performed registration on the point of interest within a predetermined time period, and provide information of the other users to the user. The method and the device for providing user information and corresponding computer storage medium may select other users through POIs, and then provide information of the selected users to an active user. In this way, the other users are closely associated with the geographic location of the active user, or associated with the points of interest which the active user is interested in.

Abstract: A method for producing low temperature bainite steel containing aluminum may include providing an alloy steel containing aluminum, carbon, chromium, silicon, molybdenum, manganese and nickel, wherein the amount of aluminum is in the range of 0.5 to 1.5 wt. %, and the amount of carbon is in the range of 0.2 to 1.1 wt. %; smelting to convert the alloy steel into a molten steel, followed by subjecting to refining and vacuum degassing, and then subjected to rolling or forging; heating the steel to 880-950° C., cooling the steel to Ms+10° C. at a rate higher than 50° C./min, continuously and slowly cooling the steel from Ms+10° C. to Ms×100×C(wt %)° C., holding the steel at a temperature of 250° C. to 350° C. for 20 to 30 min, and then air cooling the steel to room temperature, holding the steel at a temperature of 180° C. to 280° C. for 60 min, and then air cooling the steel to room temperature.

Abstract: A method and a system for acquiring user contents are disclosed, which relates to the field of network communications. The method includes: a first terminal transmits a content acquisition request to a server, wherein the content acquisition request comprises at least one of geographic information and a user identification; the server searches a content information repository stored in the server for content information matching the content acquisition request and pushing the searched content information to the first terminal, wherein the content information repository is issued by a second terminal and stored in the server, and each piece of the content information comprises at least location information and a user identification of the second terminal. The system comprises: a first terminal and a server. The method and system as disclosed may be capable of providing a user with valuable user contents from a large amount of user contents in the network.

Abstract: A method and an apparatus for classifying users. The method includes establishing sub-lists in a stored user list of a user according to information of pre-set regions, receiving user location information uploaded by a user terminal of a user, obtaining all user lists that include the user; moving the user in each of the user lists into a sub-list in the user list corresponding to the location of the user; receives a pulling request from a user, obtains information of sub-lists in a user list of the user, sends the information of the sub-lists to the user terminal of the user via a pulling response to enable the user terminal to display users according to the information of the sub-lists received.