Abstract: The invention relates to a process for the production of a carbonate polyester (co)polymer which includes the use of bis(2-methoxyphenyl) carbonate to introduce carbonate monomer units into the polymer chain. The process is an efficient process for the production of novel and existing carbonate polyester (co)polymers, also with high molecular weight, and optionally without the need for the addition of a metal catalyst.

Abstract: The invention relates to a process for the production of a (high molecular weight) polyester (co)polymer. The process includes (a) adding a diphenyl oxalate ester to a starting polyester (co)polymer at least comprising alcohol end groups and units derived from 1,2-diols, wherein the phenyl group in the diphenyl oxalate ester is substituted; and (b) in case the temperature is not already higher than 220° C., elevating the temperature of the mixture resulting from step (a) to at least 220° C., and reducing the pressure, for a period of time sufficient to obtain a polyester (co)polymer product wherein the amount of oxalate units that remain in the (co)polymer is less than added in the form of the diphenyl oxalate ester; and no or less than 1 mole % oxalate units are present, the percentage relative to a total amount of monomer units.

Abstract: The invention relates to a process for the production of a (high molecular weight) polyester (co)polymer. The process includes (a) adding a diphenyl oxalate ester to a starting polyester (co)polymer at least comprising alcohol end groups and units derived from 1,2-diols, wherein the phenyl group in the diphenyl oxalate ester is optionally substituted; and (b) in case the temperature is not already higher than 220° C., elevating the temperature of the mixture resulting from step (a) to at least 220° C., and reducing the pressure, for a period of time sufficient to obtain a polyester (co)polymer product wherein the amount of oxalate units that remain in the (co)polymer is less than added in the form of the diphenyl oxalate ester; and no or less than 1 mole % oxalate units are present, the percentage relative to a total amount of monomer units.

Abstract: The invention relates to a process for the production of a polyester (co)polymer, comprising the use of a diguaiacyl dicarboxylate ester as a chain extender, wherein the dicarboxylate is derived from a dicarboxylic acid selected from (hetero)aromatic dicarboxylic acids, and from C3-C18 aliphatic dicarboxylic acids which may be linear, cyclic or branched. The process is an efficient process for the production of novel and existing polyester (co)polymers with high molecular weight, and optionally without the need for the addition of a metal catalyst.

Abstract: A vehicle body structure and a vehicle are disclosed. The vehicle body structure includes longitudinal beams, a cross beam, a trunk, an air tank, an air pump, and a rear suspension. The longitudinal beams and the cross beam are connected with each other, and the longitudinal beams and the cross beam are arranged to support other structural components of the vehicle body structure. The longitudinal beams extend into the trunk. The air pump is connected with one of the longitudinal beams extending into the trunk. The air pump and the air tank are at both sides of a central axis of the vehicle body structure respectively, and are located close to the rear suspension.

Abstract: Provided is a wiring substrate. The wiring substrate includes a base substrate, a plurality of signal lines, a first protective layer, and a plurality of additional conductive portions. The base substrate includes a first region and a fan-out region. Each of the signal lines includes a first portion disposed in the first region and a second portion disposed in the fan-out region. The first protective layer includes a plurality of openings including at least one of a first opening disposed in the fan-out region and a second opening disposed in the first region. The plurality of additional conductive portions include at least one of a first additional conductive portion and a second additional conductive portion. The first additional conductive portion is electrically coupled to the signal line at the first opening, and the second additional conductive portion is electrically coupled to the signal line at the second opening.

Abstract: The invention relates to a process for the production of an oxalate polyester (co)polymer, comprising the use of bis(2-methoxyphenyl) oxalate to introduce oxalate monomer units into the polymer chain, comprising at least steps (a) and (b): (a) an esterification/transesterification step wherein at least one dicarboxylic acid or an ester derivative thereof is/are reacted with an excess of at least one diol compound to form a pre-polycondensation product comprising alcohol end groups, or otherwise producing such pre-polycondensation product; (b) a polymerization step comprising polycondensation of the product of step (a) with bis(2-methoxyphenyl) oxalate in a molar amount that is equal to between about 0.4 to about 0.6 equivalents of the molar amount of alcohol end groups in the pre-polycondensation product of step (a).

Abstract: A closed heat-not-burn cigarette and an assembly. The assembly comprises a closed heat-not-burn cigarette (1) and a heating smoking set (2), wherein when in use, the closed heat-not-burn cigarette (1) is inserted into the heating smoking set (2) where the cigarette is heated for smoking.

Abstract: In one embodiment, the invention provides a dual-cassette gene vehicle comprising cassettes for expression of both a mini-dystrophin gene and NF-?B/p65-shRNA gene in cardiac muscle tissue and skeletal muscle tissue, which is an adeno-associated viral (AAV) vector, wherein the mini-dystrophin gene is operably linked to a construct comprising a muscle-specific first promoter and a modified Mcken (MCK) enhancer and wherein the NF-?B/p65-shRNA gene is under the control of a second promoter. Also are provided pharmaceutical compositions comprising such gene vehicles and a method for ameliorating Duchenne muscular dystrophy (DMD) employing such gene delivery vehicles and pharmaceutical compositions.

Abstract: Embodiments of the present application relate to the technical field of operating systems, and more particularly, to a dual basic input/output system (BIOS) system, a system switching method and apparatus, a device, and a non-transitory readable storage medium, which aim to improve switching efficiency of the dual BIOS system.

Abstract: A method for recording data and an apparatus, an electronic device and a non-transitory computer readable storage medium is provided, and relates to the field of computer technologies. The method includes: configuring a BIOS and a BMC to share a shared memory of a CPU respectively, wherein the shared memory is a preset area of a memory mounted by the CPU; establishing a rule for using the shared memory for the BIOS and the BMC; when a server is started, checking a shared channel for the shared memory to determine whether the shared memory is successfully initialized; and transferring data related to RAS collected by the BIOS to the BMC via the shared memory based on the rule for using the shared memory, in a case where the shared memory is successfully initialized.

Abstract: This specification relates to the field of mobile communications technologies, and specifically to a network access method and a terminal. The method is applied to a terminal that is connected to the primary access network device and the secondary access network device through the first SIM card, and is connected to the secondary access network device. The method includes: disconnecting, by the terminal, an RRC connection between the terminal and the secondary access network equipment when the terminal executes a first service through the second SIM card; determining, by the terminal, that the first service ends; and actively disconnecting, by the terminal, an RRC connection between the terminal and the primary access network equipment, and sending an RRC connection re-establishment request, so that the terminal is reconnected to the secondary access network equipment through the first SIM card with assistance of the primary access network equipment.

Abstract: A method for preparing a preparing a polymeric positive temperature coefficient (PPTC) compound and conformally applying such compound to a substrate in accordance with an embodiment of the present disclosure may include preparing and mixing raw materials to form a PPTC mixture, processing the PPTC mixture through polymer compounding equipment, wherein the PPTC mixture is heated and is extruded as a PPTC compound, performing a beaming process on the polymer compound to establish crosslinking between polymer chains in the PPTC compound, and applying the PPTC compound to a substrate using a hot application process wherein the PPTC compound is heated and is conformally applied to a surface of the substrate.

Abstract: A vibration exciter having an elastic support, comprising a cavity cover (1) and a vibration base (5). One side of the cavity cover (1) is provided with a PCB assembly plate (8), and a PCB is provided in the PCB assembly plate (8). An excitation signal is input into a voice coil (7) provided on the periphery of a main and auxiliary magnet (6) by means of the PCB, so that the vibration base (5) provided on the periphery of the voice coil (7) is driven, and the vibration base (5) is connected to a supporting plate (4) so that vibration is delivered to the supporting plate (4) and then is delivered to the elastic support (3) by means of the supporting plate (4), the cavity cover (1) is driven to vibrate, and a screen connected to the bottom of the cavity cover (1) is driven to vibrate. Such a structure effectively reduces a resonant frequency of the exciter, and improves the amplitude of the exciter; moreover, different structures are stably connected, and the service life of a device is prolonged.

Abstract: Disclosed is a nano pulverizing device for processing reconstituted rice flour which includes a bottom plate, support legs are fixedly connected to corners of a lower surface of the bottom plate, a housing is arranged on an upper surface of the bottom plate, and a rotating motor is arranged on the lower surface of the bottom plate. The rotating motor penetrates through the lower surface of the bottom plate and extends to the upper surface of the bottom plate, and a crushing device is rotationally connected to one end, extending to the upper surface of the bottom plate, of the rotating motor. A support frame is fixedly connected to an inner wall of the housing, a support plate is fixedly connected to a lower surface of the support frame, and a flexible plate is fixedly connected to a lower surface of the support plate.

Abstract: An embedded damping vibration attenuation turning tool holder for deep cavity machining and a method includes a tool holder and a damper; one end of the tool holder is connected with a turning blade; a side surface of the tool holder is provided with a square cavity; the damper is in interference fit in the square cavity; the damper includes a mass block, an elastic member and piezoelectric ceramic; at least one surface of the mass block that is in contact with an inner wall of the square cavity is connected with the piezoelectric ceramic; the elastic member is arranged between the piezoelectric ceramic and the mass block; and the piezoelectric ceramic is used for generating interaction with the inner wall of the square cavity under a vibration action of the tool holder, so as to absorb the vibration to generate electric energy.

Abstract: Provided in the embodiments of the present disclosure are a device operation method, system and apparatus, and a non-volatile readable storage medium and an electronic device. The method comprises: during the process of executing a power-on self-test on a server, acquiring a plurality of peripheral devices connected to the server, and memories of expanded memories of respective ones of the plurality of peripheral devices; determining whether the memories of the expanded memories of the plurality of peripheral devices meet a preset memory condition of a basic input output system in the server; when the memories of the expanded memories do not meet the preset memory condition, determining a plurality of candidate device sequences according to the plurality of peripheral devices; and determining a target device sequence from among the plurality of candidate device sequences, and loading and running the multiple target devices in the target device sequence.

Abstract: A method for locating a fault of a server includes: physically connecting a GPIO pin of a BMC to a GPIO pin of target hardware in advance; reading a current state value of the GPIO signal of the target hardware in a power-on and activation process of a mainboard, and loading a corresponding version of the firmware according to the current state value and the condition for switching; and in response to determining that the corresponding version of the firmware is the debug version, outputting serial port log information of the debug version to the BMC, and in response to determining that the corresponding version of the firmware is the release version, determining whether to change the state value of the GPIO signal on a connection between the BMC and the target hardware according to a preset normal activation condition and a system event log.