11results about How to "Improve shrinkage" patented technology

The invention relates to the technical field of pharmaceutical preparations, in particular to a traditional Chinese medicine compound and preparation for treating coronary heart disease and a preparation method and application of the traditional Chinese medicine compound and preparation. The traditional Chinese medicine composition is prepared from the following medicinal materials in parts by weight: 10-30 parts of astragalus membranaceus, 5-15 parts of rhodiola rosea, 10-30 parts of salvia miltiorrhiza, 5-15 parts of ligusticum wallichii, 10-30 parts of trichosanthes kirilowii maxim, 5-15 parts of allium macrostemon, 5-15 parts of folium ginkgo, 10-30 parts of radix puerariae, 10-30 parts of radix ophiopogonis, 3-10 parts of schisandra chinensis, 15-30 parts of oyster, 5-15 parts of cassia twig and 3-10 parts of liquorice. Animal experiment results show that the traditional Chinese medicine composition provided by the invention has remarkable and multi-aspect curative effect advantages in the aspect of treating a coronary heart disease rat model. The traditional Chinese medicine composition not only can enhance myocardial contractility and recover heart blood pumping function, but also can inhibit inflammatory response, relieve myocardial damage, effectively relieve myocardial structure damage and protect myocardial tissue integrity. In addition, a proportional experiment result shows that the effect of the composition provided by the invention can be obviously weakened by losing any medicine pair, so that all the medicines in the formula cannot be absent.

The invention relates to the technical field of biodegradable materials, and provides a super-thick heavy-load biodegradable heat shrinkage film with controllable shrinkage rate and a preparation method and application thereof. The preparation method comprises the following steps: adding 50-90 parts by weight of poly (butylene adipate-co-terephthalate) (PBAT), 10-40 parts by weight of polylactic acid (PLA), 1-5 parts by weight of a plasticizer, 0.1-5 parts by weight of a compatilizer, 0.1-1 part by weight of an antioxidant, 0.1-1 part by weight of an anti-hydrolysis agent, 0.1-1 part by weight of a lubricant, 0.1-1 part by weight of a dispersant and the like into a high-speed mixer step by step according to a particle-liquid-powder sequence for mixing; carrying out melt extrusion and granulation through a double-screw extruder to prepare the modified material for the biodegradable heat shrinkage film; plasticizing the modified material for the thermal shrinkage film in a film blowing machine, upwards extruding and blowing to form a first film bubble with the blowing ratio of 1-4, and cooling and drafting to form a film; performing hot bath and secondary huffing to form a second film bubble with the draw ratio of 2-5; and cooling and shaping through a cold water jacket, drawing and rolling to form the biodegradable thermal shrinkage film. The biodegradable thermal shrinkage film prepared by the preparation method provided by the invention is controllable in shrinkage rate and thick in film thickness, and can be used for packaging heavy objects.

The invention belongs to the technical field of building materials, and particularly relates to a preparation method of a filter-press mud cake as a flow-state filling material. The method comprises the following steps: adding basalt fibers into gamma-aminopropyltriethoxysilane to obtain basalt fibers subjected to surface treatment, and stirring and mixing the basalt fibers subjected to surface treatment with a modified siliceous material to obtain a fiber reinforced material; stirring 70-80 parts of the filter pressing mud cake, 3-6 parts of a curing agent and 3-5 parts of a fiber reinforced material, then adding 2-4 parts of an early strength agent, 8-12 parts of recycled fine aggregate and 0.1-0.2 part of an air entraining agent, and stirring to obtain the flow state filling material. The material obtained in the invention has good mechanical properties, durability and contractibility.

The present application provides a Chinese herbal medicine composition and its application in preparing a medicine for treating chronic functional constipation. The Chinese herbal medicine composition comprises the following components in mass parts: 2.3-2.7 parts of radix rehmanniae, 1.2-1.5 parts of angelica sinensis, 1.5-1.7 parts of persicae semen, 1-1.4 parts of radix bupleuri, 0.8-1 part of citri reticulatae pericarpium, 0.3-0.4 part of aurantii fructus, and 0.3-0.6 part of glycyrrhizae radix. The Chinese herbal medicine composition can effectively improve defecation, improve the peristalsis of the intestinal tract, and repair the morphology of the colon, and is very suitable for treating chronic functional constipation.

The application belongs to the field of co-fired body materials, and discloses a double-ferrite three-layer hetero co-fired body material and a preparation method thereof. The double-ferrite three-layer hetero co-fired body material comprises an intermediate layer ferrite and upper and lower two layers of ferrite. The intermediate layer ferrite is a YIG system microwave ferrite, and the upper and lower two layers of ferrite are both NiZn system ferrites doped with Bi2O3. The three layers of ferrite are combined by co-firing. The application further provides a preparation method and application of the double-ferrite three-layer hetero co-fired body material. The application solves the technical problems that the NiZn system ferrite and the YIG system microwave ferrite of the plane contact type are not matched in sintering temperature and shrinkage characteristics, the layered hetero co-fired body is prone to co-firing mismatch, and the combination interface is not tight, ion diffusion at the interface and electromagnetic performance degradation of the material.

The application discloses a ceramic material based on cellulose nanocrystals and a preparation method thereof, and belongs to the technical field of ceramic material preparation. The aldehyde group of cellulose nanocrystals can be subjected to Schiff base reaction with the amino group in modified expanded graphite to form a three-dimensional reinforced composite network structure, so that ceramic particle sedimentation can be prevented, slurry uniformity can be ensured, viscosity can be rapidly reduced in the wet grinding process, good fluidity can be shown, high-energy mechanical shear stress generated in the grinding process can be effectively buffered and dissipated and structural integrity can be retained, the mechanical strength and fracture toughness of the green body are improved, in the high-temperature sintering stage, the cellulose nanocrystals fixed by chemical bonds can be uniformly lost, and uniform micropores are generated, local agglomeration combustion and the resulting stress concentration are avoided, warping and cracking in the sintering process are effectively inhibited, and the mechanical strength of the ceramic material is improved.

The invention provides a DNA tetrahedron drug compound for treating retinal ischemia reperfusion injury, and belongs to the field of eye disease treatment and molecular biology, and the tetrahedron drug compound is connected with YAP saRNA. The tetrahedral drug compound can efficiently and safely deliver YAP saRNA, improve the expression level of YAP in cells and inhibit oxidative stress and ferroptosis of retinal cells, so that RI / RI is effectively treated, and a new choice is provided for treating the tetrahedral drug compound.

The present application relates to a kind of shell-core nanofiber membrane with temperature control shrinkage, preparation method and application;DCM and DMF are sequentially added to the mixture consisting of PTMC and PVP to obtain a mixed solution, wherein the mass percentage of solute is 2-5%; the mixed solution is stirred to obtain an electrospinning precursor solution after sufficient dissolution;After electrospinning of electrospinning precursor solution using single shaft spinneret, vacuum drying obtains nanofiber membrane, the fiber diameter of the nanofiber membrane is 0.203-0.603 μm, has shrinkage under humid conditions, and the shrinkage is enhanced with the increase of temperature, and the shrinkage rate in PBS at 20 DEG C to 37 DEG C for 2h is 20.4% to 54.33%; the nanofiber membrane adheres to wound site can effectively reduce wound area, for promoting active healing of wound, using single shaft electrospinning process preparation, it is more simple and convenient, more economical to operate.

The application discloses a self-assembled ventricle-like structure based on stress-induced curling film, a system and a method, and belongs to the technical field of heart-like researches.The ventricle-like structure disclosed by the application is composed of a life-like unit and a mechanical unit, wherein the life-like unit is composed of a stent layer, a fibronectin layer and a myocardial cell layer and is used for providing driving force of the overall structure; the mechanical unit is composed of a pipeline and an end face flat plug and is used for realizing efficient operation of one-way pumping; the structure can spontaneously generate movement and can exhibit different contraction capacities in different electric stimulation environments; and the pump-out flow rate control of the ventricle-like structure can be simply realized by changing the external electric stimulation environment.

The utility model discloses an assembly type deployable truss which comprises foldable trusses, a first X-shaped inclined strut, a second X-shaped inclined strut and a transverse supporting connecting rod, the number of the foldable trusses is two, and the first X-shaped inclined strut is connected with the upper ends of the two foldable trusses; the upper end of the second X-shaped inclined strut is connected with the upper end of the foldable truss, and the lower end of the second X-shaped inclined strut is connected with the lower end of the foldable truss; the two ends of the transverse supporting connecting rods are connected with the foldable trusses located on the same side. The assembly design concept is followed, and standardized components and joints are elaborately designed. By reducing the types of the components and the nodes, batch production and standardized operation are realized, and the production efficiency is remarkably improved. According to the structure, bolts or screws are adopted for connection, accurate matching of the component size and the hole site is guaranteed, the technical threshold of assembly is lowered, ordinary constructors can also complete splicing work rapidly, and installation convenience is greatly enhanced.

The application discloses a resistance detection device, a resistance detection system, an electric table and an electric hanging cabinet, belongs to the field of resistance detection, has high resistance detection sensitivity, and discloses the resistance detection device, which comprises a first shell and a second shell, the second shell is floatingly installed on the first shell through a first elastic element, a circuit board is arranged on the first shell, a resistance detection switch connected with the circuit board and a rotating knob are arranged on the first shell, one end of the rotating knob is a free end abutting against the first shell, the other end of the rotating knob is a pressing end for pressing the resistance detection switch, and the free end is driven to drive the pressing end to move away from the resistance detection switch to generate a resistance signal.