12results about How to "Centralized distribution" patented technology

The application belongs to the technical field of biotechnology, and particularly relates to METTL3 Application of the gene in pork quality improvement, a key methyltransferase METTL3 is obtained through early screening of the application, it is found that METTL3 Overexpression can promote methylation modification of porcine intramuscular precursor adipocytes; further verified through experiments METTL3 Through mediation SLC2A4 m 6 A modification of mRNA promotes its degradation, and further negatively regulates SLC2A4 Expression of the gene; SLC2A4 Overexpression can significantly reverse METTL3 Inhibition effect on differentiation and fat synthesis of intramuscular precursor adipocytes. The application explores the regulation effect of METTL3-mediated SLC2A4 m 6 A modification on proliferation and differentiation of porcine intramuscular precursor adipocytes, provides a new key target for porcine intramuscular fat deposition molecular breeding, also provides a theoretical basis for in-depth analysis of the molecular mechanism of IMF deposition, so as to provide a scientific basis for pork quality improvement in the future.

The invention discloses a preparation method of an environment-friendly drilling fluid base fluid, and belongs to the technical field of organic chemical industry. According to the method, a drilling fluid base fluid product is obtained through the steps of petroleum heating distillation, hydrocracking, isomerization dewaxing, hydrofining, composite molecular sieve treatment, molecular distillation and the like, and the drilling fluid base fluid product is low in cycloalkane and paraffin content, high in isoparaffin content, low in biotoxicity and capable of meeting related requirements of marine organism toxicity tests; the preparation technology realizes the national production of the drilling fluid base fluid.

This utility model relates to the field of automotive window tinting tools, specifically an auxiliary tool for automotive window tinting with positioning and supplemental lighting functions. It includes an outer moving part and an inner moving part. The outer moving part is located on the outer side of the automotive window glass, and the inner moving part is located on the inner side. The outer and inner moving parts are magnetically attracted to each other across the window glass. A light guide plate is detachably installed on one side of the inner moving part, and a light source is installed inside the inner moving part near the light guide plate. The light from the light source is guided by the light guide plate to illuminate the edge of the window. In this auxiliary tool for automotive window tinting with positioning and supplemental lighting functions, the outer and inner moving parts cooperate with each other through the window glass via magnetic attraction, enabling quick and accurate positioning, cutting, and application of the window tinting film. Compared to traditional positioning methods that rely on experience and simple measuring tools, this structure effectively avoids problems such as film misalignment.

The invention belongs to the technical field of spinning, and relates to a drafting device for improving the dry uniformity of vortex spinning lines. The vortex spinning front drafting area comprises a front roller, a front pressing roller, a middle roller, a middle pressing roller, an upper pin, two symmetrical upper rubber rings, a lower pin, two symmetrical lower rubber rings, a small pressing roller, a transmission assembly and a lifting mechanism. The small compression roller is parallel to the middle compression roller, penetrates through the two upper rubber rings at the same time and makes contact with the upper surfaces of the working edges of the two upper rubber rings, the distance between the contact point and the jaw of the front roller is D1, the length of the spun fiber raw material is L, and the absolute value of the difference value between D1 and L does not exceed 3 mm; the transmission assembly is used for driving the small compression roller to operate along with the middle roller in the same direction and at the same speed so as to apply acting force F1 parallel to the operation advancing direction of the working edges of the upper rubber rings to the two upper rubber rings; and the lifting mechanism is used for adjusting the height of the small compression roller so as to apply a vertically downward acting force FN to the two upper rubber rings. The drafting device is simple in structure, and the air vortex spinning line evenness can be effectively improved.

The invention discloses application of an extracellular matrix in preparation of an anti-vascular aging product, and belongs to the field of biological medicine. The acellular extracellular matrix provided by the invention is prepared by taking umbilical artery vascular smooth muscle cells as a material and carrying out water swelling and 0.5% Triton X-100 treatment on the umbilical artery vascular smooth muscle cells. The invention also provides application of the acellular matrix in preparation of drugs for inhibiting blood vessel and cell senescence. Experimental results show that after aortic vascular smooth muscle cells overexpressing Pelamin A are inoculated to the acellular matrix and cultured, the aortic vascular smooth muscle cells are distributed in a concentrated manner, the number of the aortic vascular smooth muscle cells is increased, the form of the aortic vascular smooth muscle cells is remarkably improved, the expression of X-GAL in the cells is reduced, and the expression quantity of Ki67 is increased; therefore, the acellular extracellular matrix provided by the invention can be used for effectively regulating aortic vascular smooth muscle cell senescence induced by Pelamin A accumulation. The invention provides a new biological material for inhibiting vascular aging and cell aging.

The invention provides a dynamic rolling compensation sintering method for preparing an expanded polytetrafluoroethylene plate, which comprises the following steps: coating a biaxially oriented polytetrafluoroethylene film on a steel roller from an unreeling machine, and controlling the rotating speed of the steel roller and the advancing speed of the film on the unreeling machine, so that the expanded polytetrafluoroethylene film has a certain tension force; therefore, the steel roller is tightly coated with the thin film, and the thin film layers are tightly attached to each other. After wrapping is finished, the steel roller coated with the polytetrafluoroethylene film is put into a sintering furnace to be sintered, during sintering, the expanded polytetrafluoroethylene film is continuously rolled through a pressure roller above the steel roller, parameters such as the thickness and the surface density of the expanded polytetrafluoroethylene film are corrected in real time, and the expanded polytetrafluoroethylene film is obtained. Therefore, the consistency of the performance indexes of the expanded polytetrafluoroethylene plate is realized. The expanded polytetrafluoroethylene plate or strip produced by the method is simple in process requirement and high in production efficiency.

The application discloses a bridge disease image texture feature extraction and classification method and system, and particularly relates to the technical field of image feature extraction and classification, and is used for solving the problem that the existing rectangular detection frame does not fit the physical boundary of the disease, thereby causing non-stationary deviation of the feature vector; the texture contrast is calculated pixel by pixel from each boundary to the inside in the disease rectangular candidate frame, the demarcation line is determined according to the texture contrast change, and the core disease area and the disease transition zone area are divided, the texture contrast difference sequence on both sides along the demarcation line is calculated point by point, and the texture virtuality is determined according to the local entropy of the difference sequence, the texture feature vector of the transition zone area is weighted, the vector difference degree is calculated with the texture feature vector of the core disease area, when the difference degree exceeds the threshold value, the texture feature vector of the core disease area is corrected by weighting, the corrected texture feature vector is input into a texture classifier, the disease category confidence is corrected according to the classification result, and the final classification result is output.

The invention discloses a laser cutting system and method for a halogen-free insulating cladding. The system comprises a laser shaping mechanism, a middle transmission mechanism, a laser cutting mechanism and a horizontal moving mechanism. The laser shaping mechanism is used for adjusting the shape and peak power of a light spot emitted by the water-cooled laser; the middle transmission mechanism is used for switching the circular light spots emitted by the laser shaping mechanism and transmitting the circular light spots to the upper laser light path part or the lower laser light path part; the laser cutting mechanism comprises an upper laser light path part and a lower laser light path part which are oppositely arranged; a plurality of wire rods are loaded on the horizontal moving mechanism, the horizontal moving mechanism is matched with the upper laser light path part and the lower laser light path part by horizontally moving the wire rods, and the upper path and the lower path are switched to emit light to conduct annular cutting on the wire rods. According to the invention, the halogen-free insulating cladding of the wire rod can be ensured to be always at a focus, so that the halogen-free insulating cladding is cut, and meanwhile, the phenomenon that mushroom heads and materials are melted into a central core layer is avoided.

The present application relates to the surface treatment method of pigment, especially relates to a kind of fine surface treatment method of green zinc halogenation phthalocyanine (pigment). Zinc halogenation phthalocyanine is added to NaCl-AlCl3 molten salt system, then ester is added, after reaction, the reactant is watered out zinc phthalocyanine halide, that is, the finished product pigment zinc halogenation phthalocyanine with excellent performance is obtained.The method of the present application uses a new method by controlling the parameter condition of reaction, and prepares green zinc phthalocyanine pigment with small particle size and concentrated distribution and excellent performance, simultaneously proposes a new process route for fine surface treatment of zinc halogenation phthalocyanine, reduces the process method of secondary agglomeration of zinc halogenation phthalocyanine, the present application is simple, easy to implement, and has very good application prospect.

The application discloses a compound sulfur particle size regulator, a preparation method and application thereof, and can regulate the sulfur particle size, reduce the probability of generating oversized or undersized sulfur, and make the distribution of the sulfur particle size more concentrated. When the complex iron self-circulation reactor is operated under different loads, more sulfur can enter the reactor cone for sedimentation through the bubble wake vortex and liquid phase circulation, the deposition of the sulfur on the bottom plate of the complex iron self-circulation reactor is obviously relieved, and the compound sulfur particle size regulator can regulate the sulfur particle size, so that the distribution of the sulfur particle size is more concentrated.

The invention discloses a preparation method and application of a lignin-based activated carbon adsorption material, and particularly relates to a method for preparing the lignin-based activated carbon adsorption material through a simple direct activation / carbonization method by taking main waste lignin in the papermaking industry as a raw material and KOH, K2CO3 and NaOH as activating agents, and application of the lignin-based activated carbon adsorption material to carbon dioxide capture. The lignin used in the preparation method is wide in source, low in price, concentrated in distribution and rich in functional groups, the steps are simple, only one-time high-temperature calcination is needed, and a large amount of time and energy consumption are saved. The lignin-based activated carbon adsorption material prepared by the method has developed and disordered pores, CO2 is captured mainly through physical adsorption by utilizing the rich pore structure and high specific surface area of the lignin-based activated carbon adsorption material, the CO2 adsorption performance is high, the used adsorbent is desorbed at a relatively mild temperature, and the purpose of recycling and efficiently recycling wastes is achieved.

The invention provides a catalyst for propylene ammoxidation reaction and a preparation method and application thereof, and the preparation method comprises the following steps: uniformly mixing a metal salt solution with a first silicon source and alkaline silica sol, and then mixing with a second silicon source to obtain slurry; and carrying out spray drying and roasting on the slurry to obtain the catalyst for propylene ammoxidation reaction, wherein the first silicon source comprises one or more of acidic silica sol, tetraethoxysilane and potassium silicate, and the second silicon source is a solid silicon source. According to the preparation method disclosed by the invention, the acid-base property of the catalyst can be adjusted by introducing the liquid first silicon source, the composition of the catalyst is further regulated and controlled, and the selectivity of byproducts CO and CO2 in the propylene ammoxidation reaction is reduced; in addition, the solid second silicon source is added to provide a core for drying and forming of the catalyst, distribution of catalyst particles is more concentrated, the mechanical strength of the catalyst is enhanced, and the use stability of the catalyst and the conversion rate and selectivity of a catalytic reaction are improved.