36results about How to "Reduce the number of exchanges" patented technology

The invention relates to a lithium-containing modified low silicon-aluminum X type molecular sieve adsorbent and a preparation method thereof. The molecular sieve adsorbent comprises the following components in parts by weight: 80-90 parts of Li-LSX molecular sieve raw powder, 10-20 parts of binder and 1-5 parts of forming adjuvant; the method comprises following steps: modifying the merchant low-silicon molecular sieve raw powder by the processes of once exchange and once roasting, twice exchange and twice roasting and third lithium exchange to obtain the Li-LSX molecular sieve raw powder, and then mixing with the binder and the forming adjuvant for shaping to obtain the product. Compared with the prior art, the exchange roasting modification process provided by the invention can improve the stability of LSX molecular sieve framework, reduce the damage on the LSX molecular sieve framework caused by the subsequent process, obtain the LSX molecular sieve the Li+ exchange degree of which is more than 95%, and lower production cost, thus making large-scale industrial production possible.

The embodiment of the invention discloses a data sharing method and device, a server and a storage medium. The method is applied to the technical field of data processing. The method comprises the steps of: detecting an access request for target shared data, determining a target access permission of a request user for the target shared data, and under the condition that the access request is usedfor writing the target shared data and the target access permission is a data read-write permission, writing the target shared data into a storage area corresponding to database link information, or,under the condition that the access request is used for reading the target shared data and the target access permission is a data read-write permission or a data read permission, acquiring the targetshared data based on the database link information and returning the target shared data. With the above method adopted, a data sharing process can be managed in a unified mode through a data sharing server, the data sharing process is effectively simplified, an exchange link is shortened, and data sharing delay is reduced.

The invention discloses an intelligent matching method, system, device, and readable storage medium for an entrepreneurial incubator. According to acquiring the demand characteristics of an inquirer and matching with a preset feature vector library of an entrepreneurial incubator, a collection of entrepreneurial incubators that meet the requirements of an inquirer is screened out. , adjust the initial weight of each entrepreneurial incubator in the entrepreneurial incubator set to obtain the application weight of the entrepreneurial incubator, sort the application weights, obtain the set of entrepreneurial incubators to be recommended, and obtain the total number of entrepreneurial incubators that the historical queryer needs to view on the spot based on historical records. The number is obtained by the integer average value. By judging the integer average value and the size of the number of startup incubators to be recommended, the combination of recommended startup incubators can be obtained. Compared with the existing technology, the time progress of entrepreneurs from the startup incubator to the completion of settlement can be greatly compressed, reducing During the process, there are exchanges between business incubators, which improves search efficiency, increases order conversion rates, and speeds up the digestion of business incubator inventory.

The invention discloses a novel balloon microcatheter for treating cerebrovascular stenosis. The novel balloon microcatheter is combined by a balloon catheter and a microcatheter. The balloon catheter is sleeved outside the microcatheter. An external cavity is formed by the inner wall of the balloon catheter and the outer wall of the microcatheter. A balloon is arranged at the front end of the outer cavity. The microcatheter is provided with balloon developing rings at two ends corresponding to the balloon. A tip developing ring is disposed at the tip of the microcatheter. The inner cavity of the microcatheter is used as a conveying system for a support. During operation, a doctor uses the balloon on the balloon catheter to pre-expand vascular stenosis and then withdraws the balloon, a balloon expansion support or a self-expandable support disconnects from the inner cavity of the microcatheter along with withdrawal of the balloon (the balloon expansion support needs to pushed forward slightly), and the balloon expansion support or the self-expandable support expands and fixes at the vascular stenosis to expand the vessel. By the novel balloon microcatheter, exchanging times of medical instruments inside a patient's body during operation can be reduced, and possibility of complications of the patient is lowered.

The invention discloses a light-weight identity authentication and platform identification evaluation method, which includes the following steps: Step 1, when the AR accesses the network for the first time, the PM verifies the platform identity certificate and private identity certificate of the access requester AR and the access controller AC. Key signature, if the verification is passed, go to step 2, otherwise re-verify; step 2, conduct the first platform credible authentication evaluation, if the evaluation is successful, the access requester AR saves the hash value M of the platform configuration information of the access controller AC AC , the controller AC saves the hash value M of the platform configuration information of the access requester AR AR , execute step 3, otherwise it is determined that the platform is untrustworthy; step 3, when the access requester AR needs to access the network again, implement a lightweight identity authentication method, if the authentication is successful, execute step 4, otherwise do not access the network; step 4 , implementing a lightweight platform trustworthiness identification and evaluation method for platform trustworthiness identification and evaluation.

The invention discloses a method for introducing metal ions into a sodium type zeolite molecular sieve. The method comprises the following steps: mixing sodium type zeolite molecular sieve raw powder with a 0.5-5mol / L inorganic ammonium salt aqueous solution to perform ion exchange, performing suction filtration to obtain a filter cake, and washing the filter cake by deionized water; re-adding the washed filter cake in the ammonium salt aqueous solution to repeat ion exchange; after exchange, drying to obtain an ammonium type zeolite molecular sieve; mixing the ammonium type zeolite molecular sieve with a metal hydroxide solution to perform ion exchange, simultaneously introducing air or nitrogen and continuously supplying metal hydroxide to maintain the initial concentration, wherein the ion exchange is not finished until no ammonia gas is discharged; and filtering, washing to neutral, and drying so as to obtain the zeolite molecular sieve containing metal ions. The method has the advantages of low cost, high exchange degree, wide application range and the like.

The invention discloses a method of maximum-minimum distance clustering-based distributed cooperation frequency spectrum sensing in a cognitive unmanned aerial vehicle network. A maximum-minimum distance clustering algorithm is utilized to divide cognitive unmanned aerial vehicles into a plurality of clusters, and cluster heads are selected in the clusters; all the cognitive unmanned aerial vehicles use energy detection to obtain sensing information of a main user; two-step fusion is carried out according to a clustering situation and the sensing information of all the cognitive unmanned aerial vehicles, and each cognitive unmanned aerial vehicle is enabled to obtain one piece of uniformly converged global sensing information; and a decision of whether the main user occupies a frequency spectrum is made according to the global sensing information. According to the method, communication of members in a cluster and a cluster head is ensured through dividing cognitive unmanned aerial vehicles with similar positions and similar mobility into the one cluster, the clustering algorithm reduces the number of information exchanges in distributed fusion, and detection efficiency is improved;and fusion of the global sensing information can be realized in a case of no fusion center through two-step fusion, the number of the sensing information exchanges is decreased, and fast and highly efficient frequency spectrum detection is realized.

The invention discloses supergravity air cooling equipment capable of removing natural dormancy of deciduous fruit trees. The supergravity air cooling equipment comprises a heat exchange bucket with an opening in the upper end, an air inlet device, a cooling air outlet device and a cooling liquid inlet device are arranged on the heat exchange bucket, and a supergravity cooling liquid atomization device capable of dispersing and atomizing cooling liquid conveyed by the cooling liquid inlet device is arranged in the heat exchange bucket. According to the scheme, the heat and mass transfer mode with air and water in direct contact is adopted, the heat and mass transfer link is reduced, the water and air temperature difference is about 1 DEG C after air and water liquid are exchanged, and supports are provided for low-temperature cooling water to manufacture low-temperature air. The relative humidity of cooling air obtained after heat and mass transfer is close to the saturation relative humidity, and proper humidity can be provided for the fruit trees after the cooling air and high-temperature air are mixed.

The invention relates to a hierarchical wireless sensor network time synchronization method and belongs to a wireless sensor network time synchronization method. The method respectively adopts different synchronization mechanisms aiming at response nodes and ordinary non-response sub nodes and adopts different estimation methods to calculate the clock offset and the clock frequency offset relative to reference nodes; the hierarchical time synchronization method is divided into two stages, namely a hierarchical discovery and sub node collection stage and a time synchronization stage, wherein during the hierarchical discovery and sub node collection stage, a hierarchical structure of a wireless sensor network is established, and the response nodes on each layer are determined through collecting sub node information; during the time synchronization stage, a maximum likelihood estimation method and a least square method are utilized for calculating the clock offset and the frequency offset between the sub nodes and the reference nodes, a clock is further compensated, and by parity of reasoning, the synchronization within a whole network range is finally achieved. The hierarchical wireless sensor network time synchronization method has the advantages that the synchronous message overhead is reduced, and the energy consumption is reduced; the time synchronization accuracy is improved; the expandability is enlarged on aspect of new node addition.

The invention provides a system and a method for cooling servers. The system for cooling the servers comprises at least one group of cooling modules. Each group of cooling modules comprises a cooling unit and at least one server cabinet, the servers are arranged in the server cabinets, each cooling unit comprises a cooling device and at least one airflow regulating device, the airflow regulating devices are arranged in the cooling devices, an air outlet is formed in a side wall of each cooling device, each cooling device is in contact with a side wall of the corresponding server cabinet, an air inlet is formed in the side surface, which is in contact with the corresponding server cabinet, of each cooling device, hot air which is exhausted from the tail ends of the server cabinets can be sucked into the cooling devices by the aid of the airflow regulating devices, and cold air which is outputted by the cooling devices can be delivered to the air inlets via the air outlets. The system and the method have the advantages that the server cabinets are matched with the cooling units, accordingly, cold air and external exchange links can be reduced, the traditional cold pool structures can be omitted, and the cost can be lowered.