Abstract: Disclosed are a pyrimidine carboxamide compound and an application thereof. Further provided are a pyrimidine carboxamide compound represented by formula (I), or a tautomer, mesomer, racemate, enantiomer, or diastereomer thereof, a mixture form thereof, or a pharmaceutically acceptable salt thereof. The compound can be used as a Vanin enzyme inhibitor, and can be used to prepare a drug for treating various diseases, including Crohn's disease, ulcerative colitis, and so on.

Abstract: An identity authentication method and apparatus, where the method includes receiving a network access request from a user terminal, returning a portal authentication page to the user terminal, where the portal authentication page includes indication information, receiving an access token that is generated by an open social platform and used to obtain user identity information, generating a portal authentication request including a terminal identifier of the user terminal and the access token, sending the portal authentication request to an authentication server, and receiving a portal authentication response returned by the authentication server, where the portal authentication response includes the terminal identifier and an authentication result. Therefore, the identity authentication may be directly performed on the user terminal using the user identity information stored on the open social platform, and a user does not need to register with a portal authentication system in advance.

Abstract: A method for controlling a service data flow and a network device are provided. The method includes receiving, by a network device, a service data flow, and acquiring a control label that is carried, based on the Label Control Protocol, in the service data flow, and performing, by the network device, network access control on the service data flow according to the control label by using admission control configuration information and application control configuration information that are delivered by a controller and are based on security group information, where the network access control includes at least one of admission control and application control. According to the embodiments of the present disclosure, admission control and/or application control may be performed on the service data flow, so as to effectively improve efficiency of processing the service data flow by the network device.

Abstract: An identity authentication method and apparatus, where the method includes receiving a network access request from a user terminal, returning a portal authentication page to the user terminal, where the portal authentication page includes indication information, receiving an access token that is generated by an open social platform and used to obtain user identity information, generating a portal authentication request including a terminal identifier of the user terminal and the access token, sending the portal authentication request to an authentication server, and receiving a portal authentication response returned by the authentication server, where the portal authentication response includes the terminal identifier and an authentication result. Therefore, the identity authentication may be directly performed on the user terminal using the user identity information stored on the open social platform, and a user does not need to register with a portal authentication system in advance.

Abstract: A method for controlling a service data flow and a network device are provided. The method includes receiving, by a network device, a service data flow, and acquiring a control label that is carried, based on the Label Control Protocol, in the service data flow, and performing, by the network device, network access control on the service data flow according to the control label by using admission control configuration information and application control configuration information that are delivered by a controller and are based on security group information, where the network access control includes at least one of admission control and application control. According to the embodiments of the present disclosure, admission control and/or application control may be performed on the service data flow, so as to effectively improve efficiency of processing the service data flow by the network device.

Abstract: The present invention disclosed a concrete water reducer by grafting of lignosulfonate with carbonyl aliphatics and its preparation method. A technical solution of the method is as follows: compound proportioning of the concrete water reducer (weight) is: carbonyl group aliphatics:lignosulfonate=1:(0.75-1). The said concrete water reducer by grafting of lignosulfonate with carbonyl aliphatics is prepared through following process steps: controlling the temperature of aliphatics water reducer at 95-100° C.; dropping lignosulfonate into said aliphatics water reducer; conducting graft copolymerization reaction at 95° C.-100° C. for 2-5 h and obtaining lignosulfonate modified and grafted aliphatics concrete water reducer. The method of present application is simple, low cost and friendly to environment. The water reducer has good water reducing effect and can reduce colour aberration of concrete and thus be applied broadly.