41results about How to "Suitable for application needs" patented technology

The invention discloses a wide area file system and an implementation method, and relates to the technical field of file systems. The implementation method for the file system is applicable in a wide area. According to the system, an event-driven module receives an operation request, whether a file exists in a local cache is inquired through a cache management module according to the node number of the requested file, if yes, the file is accessed from the cache, if not, the path name, in a server end database, of the file is inquired according to the node number and through a node management module, then the file and the meta-information of the file are obtained according to the information of the operation request and through an event processing module and are sent to the cache management module, and finally, the cache management module stores the file and the meta-information of the file into the local cache. The wide area file system and the implementation method do not rely on a bottom file system, it is only needed that the bottom file system can be shared, the space management function of the cache is provided, and the resource utilization rate of the system is increased.

The invention relates to a millimeter-wave high-gain circular polarization horn antenna with a loaded single-medium planar lens. The millimeter-wave high-gain circular polarization horn antenna comprises a circular polarization horn antenna body and a single-medium planar lens which is arranged above the top of the circular polarization horn antenna body for covering, wherein the single-medium planar lens comprises a medium substrate and a plurality of array units which are embedded into the medium substrate. The array unit has a structure form in which a circular through hole exists at the center of a square cylinder. Furthermore in the medium substrate, arrangement is performed according to a phase compensation principle algorithm based on a feed source phase center. The circular polarization horn antenna body comprises a rectangular waveguide, a circular waveguide with a chamfering angle, and a horn-shaped circular open waveguide, wherein the rectangular waveguide, the circular waveguide and the horn-shaped circular open waveguide are successively arranged from bottom to top. According to the millimeter-wave high-gain circular polarization horn antenna, the array unit with the circular through hole is used as a basic unit of the single-medium planar antenna; through adjusting the diameter of the circular through hole of each array unit, phase distribution is controlled and aphase compensation function on the electromagnetic wave which is transmitted from the circular polarization horn antenna is realized; and a purpose of improving gain and directionality is realized.

The invention discloses a large-diameter precise light beam pointing device which comprises a base plate, a large-diameter reflecting mirror and a driving component, wherein the back side of the large-diameter reflecting mirror is supported on the base plate through a two-freedom-degree bearing; the driving component is mounted on the base plate; the driving end of the driving component is connected with the large-diameter reflecting mirror and can drive the large-diameter reflecting mirror to move in two free freedom degrees. Due to the adoption of the large-diameter precise light beam pointing device, the large-screen image stabilization application requirements can be met, the stabilization precision can be remarkably improved, and the processing and assembling process can be greatly simplified.

The invention relates to agomelatine sulfate and a preparation method thereof. An unexpected discovery is that the solubility and stability of agomelatine can be improved when agomelatine is prepared into sulfate, and production of appropriate pharmaceutical preparations with agomelatine can be facilitated. In the preparation method, the agomelatine sulfate is prepared via reaction of agomelatine and sulfuric acid. The preparation method specifically comprises the steps of: dissolving agomelatine in an organic solvent, slowly adding concentrated sulfuric acid at normal temperature, precipitating a large amount of solid until the raw material agomelatine disappear according to TLC (thin-Layer chromatography) tracking results, filtering, washing and drying the solution , thereby obtaining the target product.

The invention discloses a squalene and tea polyphenol composition multivesicular liposome preparation method and base and harm reduction application. Multivesicular liposome comprises, by weight, 12-20 parts of hydrogenated phospholipid, 15-20 parts of stabilizer, 10-15 parts of surfactant and the balance of squalene and tea polyphenol composition. The multivesicular liposome is placed in cigarette filter tips made of cellulose acetate fibers during shaping of the cigarette filter tips. When a consumer smokes, smoke passes the multivesicular liposome, the antioxidant in the multivesicular liposome is in sufficient contact with mainstream smoke due to the fact that the multivesicular liposome is large in surface area, the gas-phase free radical can be effectively eliminated, and powerful technical support is provided for solve the problems of smoking and health.

The invention discloses a squalene and beta-carotene composition polycystic lipidosome preparation method and an application thereof for decreasing free radical and reducing harm. The polycystic lipidsome is prepared by materials including 10-15 parts of phospholipid, 10-20 parts of stabilizers, 8-15 parts of surfactants and the balance of squalene and beta-carotene composition. The polycystic lipidsome is applied to cigarettes, and functions of decreasing the free radical and reducing the harm can be achieved. Since especially the polycystic lipidsome is placed into cigarette filters made of cellulose acetate fibers during forming of cigarette filter rods, when consumers smoke and tobacco smoke passes through the polycystic lipidosome of the built-in filters, the antioxidants are in full contact with the mainstream tobacco smoke due to large surface area of the polycystic lipidosome, the smoke-phase free radical in the mainstream tobacco smoke can be effectively eliminated, and powerful technical support is provided for solving the problems about smoking and health.

The invention provides an energy storage inverter charging and discharging control circuit and a control method thereof. The control circuit comprises a bidirectional non-isolated DC-DC converter A, acontrol circuit, a bidirectional non-isolated DC-DC converter B, a bidirectional non-isolated DC-DC converter C and a controller. The control circuit has multiple working modes of isolation, non-isolation, wide-range conversion and the like at the same time; the requirements of energy storage charging and discharging application of an energy storage inverter under various different working conditions can be met; various electric energy functions can be achieved through one circuit architecture; good adaptability and practicability are achieved; the application requirements of charging and discharging circuits of different types of energy storage inverters can be met in cooperation with the control method of the control circuit; and very good application prospects and extremely high engineering value are achieved.

An embodiment of the invention discloses an interface expansion method of a programmable logic controller and a frequency converter. The method comprises the steps of establishing internal high-speedcommunication between the programmable logic controller and the frequency converter to realize data interaction; arranging a first mapping storage area and a second mapping storage area in the programmable logic controller and the frequency converter respectively; and interacting data of the first and second mapping storage areas between the programmable logic controller and the frequency converter through the internal high-speed communication, so that interface expansion of the programmable logic controller and the frequency converter is realized. According to the interface expansion method,the programmable logic controller and the frequency converter are connected through an internal high-speed communication interface, and the mapping mode is adopted, so that the interface between the programmable logic controller and the frequency converter is expanded. The cost of information interaction between the frequency converter and the programmable logic controller is reduced, and the interaction speed and reliability are improved.