31results about How to "Solve aging problems" patented technology

The invention relates to a PostgreSQL high concurrency streaming big data multidimensional quasi real-time statistic method. According to the technical scheme, the method is characterized in that a recording table increment status table, a statistical function, a function increment status table and an analysis function are established, and the function increment status of the recording table increment status table is initialized; the number obtaining frequency of the analysis function is calculated and recorded as an integer and serves as statistic frequency data, the analysis function works, and substeps are started; a computer outputs a statistic dimension table containing multidimensional quasi real-time statistic data according to the recording statistic data obtained by the statistic function. Due to the method, the hardware input is reduced by at least 100 times, and real-time effectiveness is controlled within one minute.

The invention discloses a restaurant site selection optimization method and device. The method includes: determining the pre-selected address of the restaurant according to the collected restaurant site selection influencing factor data set; model; solving the mathematical model of the location of the restaurant to obtain the optimal location of the restaurant. Transform the restaurant location problem into a mathematical problem, and seek the optimal solution within the range of potential optional pre-selected addresses to obtain the optimal restaurant location. Based on the mathematical model, the subjective judgment can be overcome, and the problem of timeliness can be solved at the same time, and various influencing factors can be fully analyzed, thus improving the scientificity and efficiency of decision-making.

The invention provides a method for preparing amphiprotic starch solution for papermaking, which belongs to the field of fine chemicals for papermaking. The amphiprotic starch solution is added at a papermaking wet end, and has a dry strengthening effect on paper. Starch is used as the basic material, water, sodium hydroxide, sodium hypochlorite or potassium persulfate and cationic etherifying agent are added. The amphiprotic starch solution is obtained after the aqueous solution is heated. The preparation method is fulfilled by the heating reaction of aqueous solution. The amphiprotic starch solution has high concentration, can be diluted by cold water to any concentration and cannot be aged, so the technical problem of starch aging is solved. When in use, the amphiprotic starch solution can be added at the wet end without being heated to gelatinize, the amphiprotic starch solution as dry-strengthening agent for papermaking can notably increase the dry strength indexes of paper, such as burst index and ring crush index, and under the circumstance of the same added amount, the amphiprotic starch solution has a better effect than the like product. The innovation of the invention is that a simple technique for producing the amphiprotic starch solution is provided, the production time is not longer than 2 hours, the aging and retrograding problems of the amphiprotic starch are solved, and the invented amphiprotic starch solution can be directly added at the papermaking wet end without going through the step of gelatinization by heating.

The invention belongs to the technical field of medicinal plastic containers and particularly relates to a method for increasing the airtightness of a medicinal plastic container. The method includes:adding mixing auxiliaries with the weight being 2-6% of the weight of a polyethylene raw material into the polyethylene raw material, and sufficiently mixing, wherein the polyethylene raw material comprises polyethylene with the molecular weight being 0.1-0.3 million, polyethylene with the molecular weight being 0.05-0.1 million, polyethylene with the molecular weight being 0.3-0.5 million and polyethylene with the modified molecular weight being 3-6 million. Compared with the prior art, the method has the advantages that dielectric barrier discharge is utilized to modify the ultrahigh-molecular-weight polyethylene material, the modified material is mixed with other raw materials to prepare the plastic container, material compatibility can be enhanced, the high-temperature resistance andairtightness of the material can be increased effectively, and medicine pollution during long-term use of the container can be avoided; the method is simple in process, easy in condition control, capable of reducing the decomposition of additives and capable of expanding the application range of the polyethylene material.