Abstract: Disclosed is a process for preparing 5-aminosalicylic acid by gas phase catalytic carboxylation, characterized in that carbon dioxide is introduced into a system of p-acetaminophenol and a basic compound at a temperature of 150° C.˜220° C. and a pressure of 0.5˜5.0 MPa in the presence of a catalyst, so as to carry out a gas phase catalytic carboxylation reaction to form a 5-aminosalicylate, and the crude product 5-aminosalicylate is separated, and then acidified to prepare 5-aminosalicylic acid (5-ASA). Since the gas phase catalytic reaction replaces a solid phase thermo-chemical reaction, the reaction is significantly improved in terms of the process flow, reaction conditions, product quality and energy consumption. In addition, the reaction has a short reaction time, good selectivity, high yield and no formation of wastes during the reaction, and is suitable for industrial production.

Abstract: The present invention provides a method as regards how a network side gets a MSS into the idle mode in a wireless MAN, including: the PA/BS sends a DREG_CMD to the MSS; the MSS sends a DREG_REQ message to the PA/BS, according to the DREG_CMD message, requesting to enter the idle mode; the PA/BS releases the link of the MSS and updates the data of the anchor PC/LR after receiving the DREG_REQ message. The present invention specifies the process of a MSS entering the idle mode initiated by the network and the settings of relevant parameters, thus enhancing the stability of the process of entering the idle mode and saving the system resources.

Abstract: A method and base station for dynamic adjustment of a carrier resource are disclosed. First, a cell-edge traffic volume of a local cell is detected; then, if the cell-edge traffic volume of the local cell is reduced, an idle primary subcarrier resource in the cell is released as a secondary subcarrier according to a degree of reduction of the cell-edge traffic volume and according to a multiple of a predetermined minimum granularity. With it, when the cell-edge traffic volume of the local cell is changed, the allocation of a primary subcarrier and a secondary subcarrier may be adjusted dynamically, which increases a utilization rate of a spectrum and ensures that carrier resources can be utilized properly and adequately.

Abstract: An illumination portion is used in an optical encoder which comprises a scale grating, an imaging portion, and a detector portion. A light source outputs light having a wavelength ?. A structured illumination generating portion inputs the light and outputs structured illumination. The structured illumination comprises an illumination fringe pattern oriented transversely to the measuring axis direction. A first filtering lens focuses the structured illumination proximate to a plane of the spatial filter aperture configuration. A spatial filtering aperture configuration includes a central portion that blocks zero-order portions of the structured illumination and an open aperture portion that outputs +1 order and ?1 order portions of the structured illumination to a second filtering lens. The second filtering lens outputs the structured illumination to a plane of the scale grating with an illumination fringe pitch PMI along the measuring axis direction at a plane coinciding with the scale grating.

Abstract: A method for a network side to logout a mobile station (MS) in an idle mode is provided. The method includes receiving, by a paging agent of network side entities, a location update request message carrying a power-off indication sent from the MS; sending, by the paging agent, a location update confirm message, to an anchor paging controller/location register of the network side entities. According to the location update confirm message, the anchor paging controller/location register triggers at least one network side entity of the network side entities to release resources associated with the MS and delete a context of the MS stored in the at least one network side entity. Accordingly, the system resources are saved.

Abstract: Disclosed are a type of catalyst which can catalyse the ring-addition reaction of CO2 and an alkylene oxide at 0˜180° C. under 0.1˜8.0 MPa to produce a corresponding cyclic carbonate, and the preparation thereof. The catalyst is a conjugated microporous macromolecule polymer complexed with cobalt, chromium, zinc, copper or aluminium, and by using the macromolecule catalysts complexed with different metals to catalyse the reaction of CO2 and alkylene oxide at normal temperature and normal pressure, a yield of the corresponding cyclic carbonate of 35%˜90% can be obtained. The catalyst is easy to recover and the re-use of the catalyst has no influence on the yield; additionally, the yield can reach over 90% by controlling the reaction conditions.

Abstract: An automatic conveying device includes a conveyer bracket, a wheel assembly, a transmission mechanism, and a loading assembly. The wheel assembly is rotatably assembled to a bottom portion of the conveyer bracket for supporting the conveyer bracket. The transmission mechanism is assembled within the conveyer bracket and connected with the wheel assembly, thereby driving the wheel assembly to rotate. The loading assembly is mounted upon the conveyer bracket and movably assembled with the transmission mechanism, for accepting objects as a load and driving the transmission mechanism to work. The loading assembly moves downward relative to the conveyer bracket under the weight of the objects placed on the loading assembly, and is capable of moving upward back to its original position, when the objects are removed.

Abstract: A robot claw includes a base seat, more than one elastic assemblies, and at least two first clamping assemblies. The base seat includes a first fastening surface and a second fastening surface opposite to the first fastening surface. Each first clamping assembly includes a sliding unit fastened to the first fastening surface of the base seat and a clamping member fastened to the sliding unit. The sliding unit includes a guide rail. Two elastic assemblies are loaded at two opposite ends of each guide rail; when each of the clamping member slides to one end thereof, one elastic assembly elastically resists with an air cylinder to drive the air cylinder with the clamping member to slide towards the other end of the guide rail of the sliding unit.

Abstract: Disclosed is a process for preparing 5-aminosalicylic acid by gas phase catalytic carboxylation, characterized in that carbon dioxide is introduced into a system of p-acetaminophenol and a basic compound at a temperature of 150° C.˜220° C. and a pressure of 0.5˜5.0 MPa in the presence of a catalyst, so as to carry out a gas phase catalytic carboxylation reaction to form a 5-aminosalicylate, and the crude product 5-aminosalicylate is separated, and then acidified to prepare 5-aminosalicylic acid (5-ASA). Since the gas phase catalytic reaction replaces a solid phase thermo-chemical reaction, the reaction is significantly improved in terms of the process flow, reaction conditions, product quality and energy consumption. In addition, the reaction has a short reaction time, good selectivity, high yield and no formation of wastes during the reaction, and is suitable for industrial production.

Abstract: A document collaborating method among multiple users includes: for each user creating one or more types of message accounts correspondent to a username of the user, wherein each user is able to establish contacts or a collaborative group thereof; allocating a document initial version number to one or more documents which the user shares with the contacts or the collaborative group, saving an initial version of the document and then setting correspondent sharing permission and sharing time limit; and after finishing setting the sharing permission and the sharing time limit, automatically sending notification messages to the correspondent contacts or the correspondent collaborative group for readily notifying by the message account, and regularly reminding the sharing users to notice the time limit according to the sharing time limit by the message accounts of all sharing users of the shared document.

Abstract: A network status indication system utilizes indicators on a keyboard to indicate the network status of a computer. When a simultaneous activation of two predetermined keys is detected and when the number of simultaneous activations is odd, the network status is determined, thereby indicating the network status of the computer.

Abstract: A multicast broadcast service (MBS) management method, device, and system are provided, so that a service/content provision server is enabled to manage an MBS operated by the service/content provision server itself. The method includes: a universal service interface (USI) receives a management operation request message from a service/content provision server; the management operation request message is sent to a multicast and broadcast service (MCBCS) server/controller to enable the MCBCS server/controller to perform corresponding operations according to the management operation request message. The device includes a first receiving module and a second receiving module. Another device includes a receiving module and a request processing module. The system includes an MCBCS server/controller and a USI connected to the MCBCS server/controller in a communication mode.

Abstract: A method for testing an electronic device is implemented with a host computer. The host computer detects a test status of the electronic device. The host computer stores a test order table that indicates the test status and test order corresponding to the test status. The host computer transmits a test order based on the test status and the test order table to the electronic device. The electronic device executes a self-test based on the test order.

Abstract: A dual beam assembly is provided for attachment to a chromatic confocal point sensor optical pen. The optical pen provides a single source beam having a measurement range R in the absence of the dual beam assembly. The dual beam assembly includes a first reflective element that is positioned in the source beam and divides it into a first measurement beam and a second measurement beam. The dual beam assembly outputs the first and second measurement beams along first and second measurement axes to different workpiece regions and returns workpiece measurement light arising from the first and second measurement beams back to the optical pen. A second reflective element may be included and configured to deflect the second measurement beam along a desired direction. An offset may be provided between the measuring ranges of the first and second measurement beams.

Abstract: A robot claw includes a base seat, more than one elastic assemblies, and at least two first clamping assemblies. The base seat includes a first fastening surface and a second fastening surface opposite to the first fastening surface. Each first clamping assembly includes a sliding unit fastened to the first fastening surface of the base seat and a clamping member fastened to the sliding unit. The sliding unit includes a guide rail. Two elastic assemblies are loaded at two opposite ends of each guide rail; when each of the clamping member slides to one end thereof, one elastic assembly elastically resists with an air cylinder to drive the air cylinder with the clamping member to slide towards the other end of the guide rail of the sliding unit.

Abstract: An automatic conveying device includes a conveyer bracket, a wheel assembly, a transmission mechanism, and a loading assembly. The wheel assembly is rotatably assembled to a bottom portion of the conveyer bracket for supporting the conveyer bracket. The transmission mechanism is assembled within the conveyer bracket and connected with the wheel assembly, thereby driving the wheel assembly to rotate. The loading assembly is mounted upon the conveyer bracket and movably assembled with the transmission mechanism, for accepting objects as a load and driving the transmission mechanism to work. The loading assembly moves downward relative to the conveyer bracket under the weight of the objects placed on the loading assembly, and is capable of moving upward back to its original position, when the objects are removed.

Abstract: In the field of communication technology, a method for invoking a Universal Service Interface (USI) and a USI system are provided. The schemes provide a user with a short-lived user ID for the application to interact with the USI system. The short-lived ID has a corresponding relation with the long-lived user ID and can be found according to the long-lived user ID regardless of whether the user is online or offline. The method and device can effectively ensure the security of USI invocation, and ensure that the application can initiate the USI service request even when the user is in an offline state.

Abstract: A method, a system, and a terminal for sending and receiving a multicast broadcast service (MBS) are provided in the communication field. Based on a preset correspondence between MBS content IDs and LCIDs, a network side sends MBS data with an LCID corresponding to the MBS content ID in an air interface link identified by an MCID. A terminal generates a corresponding LCID from the MBS content ID of the MBS based on the same correspondence as that of the network side, and receives data via a logical channel identified by the LCID in the air interface link identified by the MCID of the required MBS. A method for assigning an MBS information ID is also provided. The uniqueness of the MBS content ID can be guaranteed within an operator, an access service network (ASN), or an MBS zone.

Abstract: A voltage controlled current source circuit is utilized to clamp the internal compensation node of a low dropout (LDO) regulator with an NMOS output during load transients. The circuit senses a voltage drop of the internal node and mirrors its current to the internal node to hold the internal node voltage when the voltage starts to drop low enough to turn off the output transistor.

Abstract: A system and charging control method of network convergence policy and charging control architecture are disclosed, based on the QoS parameter, charging policy and user subscribing information granted by the service layer, the PCRF confirms PCC rule, and provides the PCC rule to the policy distribution function PDF. As the interface between the PCRF and PCC policy performing entity, the PDF performs the protocol conversion and information distribution. Based on the PCC rule, the PCC policy performing entity performs QoS policy of the service data flow and the detecting and charging of the service flow.