摘要:
A process for the manufacture of agomelatine and its intermediate N-[2-(7-methoxy- 1-naphthy)ethyl]phthalimide is provided and inclues reacting 7-methoxy-1-naphthyl ethanol (III) with benzenesulfonyl chloride to obtain 7-methoxy-1 -naphthylethyl benzene sulfonate (IV), which is reacted with potassium phthalimide to produce N-[2-(7-methoxy-1-naphthy)ethyl]phthalimide (II); and subjecting N-[2-(7-methoxy-1-naphthy)ethyl]phthalimide (II) to alkaline hydrolysis and acetylation, to obtain agomelatine.
摘要:
A multimedia file skipping method. The skipping method adds obtained increased amount of time to a current decoding time stamp to determine a target time stamp, determines a PCR (Program Clock Reference) corresponding to the target time stamp as a PCR prediction value; determines a position offset corresponding to the PCR prediction value as a target position offset according to a linear relationship between the PCR and position offset of the multimedia file; and skips to the target position offset and plays the multimedia file from this position. By the aforementioned, it is not necessary to set a time stamp index file, and calculation is performed by utilizing the linear relationship between the PCR and the position offset, and thus the amount of calculation is reduced, time cost is reduced, and skipping speed is significantly improved.
摘要:
A label printer is provided. The label printer comprises a stationary housing (100) and a side cover (200) which are rotationally connected; a mechanism set is fixed in the stationary housing; at least two fixed shafts are set between a first side plate (800) and a second side plate (801) of the printer module frame; a pinch plate (5) used to support the second side plate is rotationally installed at the side of the mechanism base; a printer set (10,2,1) between the first side plate and the second side plate. The label printer in the invention is convenient to change or assemble the consumable.
摘要:
The present invention relate to a binderless molecular sieve catalyst and a process for preparing the same, which are mainly useful for solving the problems of the current catalysts, such as lower activity, less pore volume and worse diffusivity. The present invention relates to a novel binderless molecular sieve catalyst, comprising, based on the weight of the catalyst, 90-100 wt. % of a molecular sieve, 0-10 wt. % of a binder, and 0-10 wt. % of an anti-wear agent, wherein said catalyst has a pore volume of 0.1-0.5 ml/g, an average pore diameter of 50-100 nm, and a porosity of 20-40%; the anti-wear agent is selected from the rod or needle-like inorganic materials having a length/diameter ratio of 2-20. Said catalyst has the advantages of higher activity, greater pore volume, larger average pore diameter and porosity, and better diffusivity, and well solves said problems and can be used for the industrial preparation of binderless molecular sieve catalysts.
摘要:
A hydrophobic self-etch dental adhesive composition including a hydrophobic, surfactant-type acidic monomer. The composition may further include hydrophilic and hydrophobic monomers, preferably in a ratio of less than 1:1, and may include a solvent that is an azeotrope.
摘要:
Devices, methods and products are described that provide for selective system or root level access for applications on an information handling device. One aspect provides a method comprising determining whether an application has system privileges on an information handling device; and executing privileged code from the application on said information handling device responsive to determining that the application has system privileges through one or more native services operating on said information handling device. Other aspects and embodiments are also described herein.
摘要:
The present invention discloses a content addressable memory and a method of searching data thereof. The method includes generating a hash index data item from a received input data item; searching the cache for presence of a row tag of the RAM data row corresponding to the data item of hash index; in response to presence, searching the RAM for a RAM data item corresponding to the input data item according to the corresponding row tag of the RAM data row; in response to absence, searching the RAM for a RAM data item corresponding to the input data item by using the data item of hash index; and in response to finding a RAM data item corresponding to the input data item in the RAM, outputting data corresponding to the RAM data item. The method can accelerate data search in the CAM.
摘要:
A data storage system includes a first memory, a controller, a counting module, and a checking and correcting module. Copyback operations are performed in the first memory. The controller couples the first memory to the counting module and the checking and correcting module. The counting module provides a counting operation for the copyback operations at different logic addresses of the first memory and, according to a counting result of the counting operation, determines whether a checking and correcting requirement has been satisfied by any of the logic addresses. The checking and correcting module receives data read out from the first memory, wherein the received data corresponds to a satisfying logic address, and checks the received data and corrects the received data when it is checked that the received data is incorrect, to correct the first memory accordingly.
摘要:
A method and an apparatus for improving power output efficiency of a line driver are disclosed. The method includes: obtaining a current working parameter of an xDSL subscriber board, where the current working parameter includes at least one of a working mode configured on a subscriber port of the xDSL subscriber board and current output power of the subscriber port; and determining, according to the current working parameter, a control signal for a line driver in the xDSL subscriber board and outputting the control signal.