6results about How to "Expensive to solve" patented technology

The invention discloses a method for treating copper cobalt oxide ore, and belongs to the technical field of non-ferrous metal hydrometallurgy. The method comprises the following steps: carrying out critical leaching on the copper-cobalt oxide ore to obtain a leaching solution and leaching residues, returning the leaching residues to a wastewater and waste residue neutralization process, carrying out a sulfuration sectional copper-cobalt deposition process on the leaching solution to obtain two products of copper sulfide and cobalt sulfide, carrying out targeted adsorption cobalt recovery on the produced sulfurized solution, returning the desorbed solution to a critical leaching process, and carrying out secondary leaching on the desorbed solution. After adsorption, liquid enters a waste water and waste residue neutralization process, produced neutralization residues are piled up, and produced neutralization water is returned to a critical leaching process. The method sequentially comprises the key procedures of critical leaching, vulcanization segmented copper and cobalt deposition, targeted adsorption and waste water and waste residue neutralization. The process adopted by the invention has the advantages of short process flow, high recovery rate, zero discharge of wastewater and the like. Compared with a traditional process, the copper and cobalt leaching rates can reach 90% or above, and the cobalt recovery rate can be increased by 10% or above.

The invention discloses an engineered adoptive macrophage based on a nano battery as well as a preparation method and application thereof, and belongs to the technical field of biological medicines. The preparation method disclosed by the invention comprises the following steps: taking an immunologic adjuvant working solution as a raw material, and obtaining nanoparticles with high drug loading capacity through an assembly effect; as the main energy of ChARM comes from an immunologic adjuvant, the high-drug-loading nano-particle is also called a high-energy-density nano-battery. Diluting the obtained nano particles with a cell culture medium, and co-incubating the diluted nano particles and macrophages to obtain engineered macrophages loaded with the anti-tumor or anti-inflammatory nano battery; the assembly mode is any one of supramolecular assembly, prodrug assembly or metal coordination assembly; the high-density drug-loaded nano battery can endow engineered cells with excellent biological functions. The method solves the technical problems that the preparation of the existing CAR-M is expensive, the gene modification is complex, and the nano-drug delivery system is unstable.

The present disclosure relates to a culture system, comprising: a culture net cage having an accommodating space formed therein for accommodating marine products, the culture net cage comprising a buoyancy column for accommodating liquid, the buoyancy column communicating with the outside in an openable and closable manner so as to move in a height direction by changing the overall weight; the wind driven generator is arranged above the buoyancy column; the operation platform is arranged above the culture net cage; the storage battery is arranged on the operation platform, electrically connected with the wind driven generator and used for converting the wind energy provided by the wind driven generator into electric energy; the feeding assembly is arranged on the operation platform and used for feeding bait into the aquaculture net cage. By means of the wind driven generator, wind energy can be converted into electric energy to be stored in the storage battery arranged on the operation platform, electric power generated by offshore wind power is directly transmitted to a relevant control structure of the aquaculture net cage, self-sufficiency of power supply is achieved, the electric power transmission distance is shortened, the electric power transmission cost is reduced, and economic benefits of offshore aquaculture are achieved.

The invention provides a high-temperature-resistant GFRP wood composite board based on graphene oxide / MXene multi-dimensional hybrid interface modification and a preparation method and application of the high-temperature-resistant GFRP wood composite board. The composite board is formed by hot-pressing and bonding a wood base body and a modified GFRP reinforcement dispersed in the wood base body through an adhesive. Wherein the modified GFRP reinforcement body is a waste GFRP particle with a multilayer interface structure constructed on the surface, and the structure sequentially comprises a hydroxylation activation layer formed on the surface of the GFRP through alkali treatment, a surface modification layer formed on the surface of the GFRP through alkali treatment, and a surface modification layer formed on the surface of the GFRP through alkali treatment from inside to outside; the amino silane flexible buffer layer is grafted on the hydroxylation anchoring layer; the graphene oxide / MXene nano composite rigid protective layer is adsorbed on the amino silane flexible buffer layer through electrostatic self-assembly. The high-temperature mechanical property of the composite board is remarkably improved, the interface toughness is enhanced, and the utilization rate of MXene in the composite board is high.

The invention belongs to the technical field of Tai Chi teaching, and particularly relates to a Tai Chi teaching system based on motion perception, which comprises a video acquisition module, a central processing module and an interaction module. A central processing module of the system performs action recognition on a user video by adopting an OvR strategy CNN fusion full-connection neural network algorithm, and performs secondary judgment and gives evaluation suggestions in combination with a Tai Chi teaching rule base. The accuracy of the deep learning model is improved by priori knowledge introduced by the rule base, and the expandability and interpretability of the program are further improved while the action recognition accuracy is improved. The hardware with low cost and low volume improves the economical efficiency and portability of the whole product, effectively solves the problem that the existing Tai Chi teaching system is expensive and heavy, and enables the old to learn Tai Chi anytime and anywhere at low cost.

This utility model discloses a large-diameter lathe, including a bed, a headstock, a drive system, a cross slide, and a scale. The top of the bed is equipped with longitudinal guide rails; the headstock is fixed to one end of the bed by clamping bolts, and the internal spindle body is supported by bearings and connected to a three-jaw self-centering chuck; the drive system includes a three-phase motor and a frequency converter, driving the spindle through a belt drive mechanism; the cross slide consists of a longitudinal slide and a transverse slide, which are moved by lead screw drives; the bed and slide are equipped with a scale. Vibration damping pads are provided at the headstock connection; the belt drive mechanism includes multi-wedge pulleys and a tension adjustment device; the bed is a welded steel pipe structure filled with damping material. This utility model features low-frequency start-up, energy efficiency, vibration suppression, and high-precision positioning, making it suitable for small and medium-sized enterprises processing large-diameter workpieces.