48results about How to "Increase availability" patented technology

The invention discloses a preparation method of chondroitin sulfate, and belongs to the technical field of biology. According to the invention, cartilage and/or trachea from livestock and poultry are used as raw materials, and a modern biological enzymolysis technology and a separation and extraction technology are integrated to prepare high-purity chondroitin sulfate and protein peptide. The method comprises the following steps: cooking a mixture of cartilage and/or trachea in a reaction tank, adding sodium hydroxide to adjust the pH value to 8.0-9.5, adding trypsin and lipase to perform primary enzymolysis, and preliminarily removing impurities; adding compound protease for secondary enzymolysis, and hydrolyzing protein specifically; filtering the enzymatic hydrolysate, and carrying out ultrafiltration, concentration and drying on the supernate to obtain the high-purity chondroitin sulfate; and carrying out nanofiltration desalination, concentration and drying on the ultrafiltration permeate to obtain the collagen oligopeptide. The high-efficiency separation preparation of chondroitin sulfate and protein peptide is realized by utilizing continuous secondary enzymolysis and membrane separation technologies, the process is simple and easy to operate, the production period is short, the product purity is high, and the method is suitable for factory production and application.

The invention discloses a bar double-end-face drilling device and method and mainly relates to the technical field of drilling. The bar double-end-face drilling device comprises a total base; a processing unit, a support unit and two clamping units; the processing unit is arranged at one end above the total base in a sliding manner and is positioned on the outer side of the clamping units; the processing unit comprises a drill bit; the support unit is arranged on the total base and comprises a rotary disc, a middle support, a rotary unit and two side supports; the two clamping units are arranged on the total base in a sliding manner and are positioned on the two sides of the support unit; and each of the clamping units comprises a fixed support seat and a movable support seat. According tothe bar double-end-face drilling device, the support unit is cooperated with the two clamping units for clamping, the middle section of a bar is supported and clamped through the support unit, detaching is not needed during the entire drilling process, drilled holes in two ends are positioned at one time, the drilled hole in the second end face is cooperated with the support unit to rotate to drive the entire bar to rotate by 180 degrees without completely taking down the bar, and during the drilling process, the middle section of the bar is always supported through the support unit to ensurethe coaxiality of two end face holes.

The invention provides a gradual terrace transformed method for a dry hillside field of sisal hemp in the dry and hot region, relates to the field of region water and soil maintenance, and specifically relates to the gradual terrace transformed improving method for the dry hillside field. The invention aims to effectively reduce soil erosion and form a long-term protective belt at the same time, achieves the gradual terrace transformed improvement of the dry hillside field in the dry and hot region, and develops and utilizes the improved regional field. The adopted technical scheme comprises the steps of determining a gradual terrace transformed scheme based on the geology and terrain characteristics, namely Torrid red soil or vertisols of a dry and hot rive valley, of the target zone, planting sisal hemp to form a sisal hemp biological barrier protective belt, and utilizing the rigid and anti-corrosion feature of sisal hemp leaves to form a partition net of water-sand on slopes, which is the key technical step; according to targets of related regional treatment or development, gradually cultivating protective terrace edges, meanwhile, achieving gradual terrace transformation of the dry hillside field in the dry and hot region through depending on the transporting effect of natural water erosion and the effect of manual assistant management, constructing sisal hemp ecological barrier protective edges of the treatment region target terrace, and forming an efficient, economic and long-term terrace transformed technique.

The invention discloses a railway freight car number identification snapshot method and system. The problems that in the prior art, operation is complex, accuracy and confidence are not high, and the problems are likely to occur are solved. According to the method, a deep neural network is used for detecting a carriage number area and a digital area, and position information, categories and confidence coefficients of the carriage number area and positions, categories and confidence coefficients of the digital area are obtained; and aiming at the identified digital license plate number arrangement, a matching mode based on confidence and Euclidean distance is carried out by utilizing a Hungary algorithm. The operation is more convenient, the accuracy and confidence are high, and the phenomenon of false identification is avoided.