Nantong University

A multi-phase fluid liquid bridge electrode device and a use method therefor are provided. The multi-phase fluid liquid bridge electrode device includes a flexible upper plate, a lower plate, and liquid bridges. The flexible upper plate is attached to and sealed with the lower plate. One side surface of the lower plate close to the flexible upper plate defines accommodating mechanisms configured to accommodate the liquid bridges. A connecting piece is disposed on one side surface of the flexible upper plate close to the lower plate. The liquid bridges stored in the accommodating mechanisms are respectively in contact with the connecting piece and the one side surface of the flexible upper plate close to the lower plate, so the lower plate, the liquid bridges, and the flexible upper plate are connected as a whole.

A stair cleaning robot based on retractable rotational arms, including a cleaning robot body, wherein the cleaning robot body includes a machine body, a control system disposed at the top of the machine body, and a cleaning mechanism disposed at the bottom of the machine body; a first retractable rotational arm mechanism is disposed on the left side of the machine body, a second retractable rotational arm mechanism is disposed on the right side of the machine body, and the first retractable rotational arm mechanism and the second retractable rotational arm mechanism are disposed in a bilateral symmetry manner; the control system includes a control plate, a battery and a radar which are disposed on a control seat; a first reset sensor is disposed near the radar, and a second reset sensor is disposed near the control plate.

A pitot tube pump capable of conducting continuous oil-water separation is provided, including a rotating main shaft, a rotating portion, a fixed housing, and pitot tubes. Two pitot tubes, which are L-shaped, are provided. A vertical portion of each pitot tube is arranged in the rotating portion, a horizontal portion of each pitot tube extends in a direction away from the rotating main shaft. The vertical portions of the two pitot tubes are different in length, and a separated liquid inlet is arranged at an end portion of the vertical portion of each pitot tube. In an operating state, the separated liquid inlets of the two pitot tubes are located at both sides of an oil-water interface, in a direction opposite to a rotating direction of the rotating main shaft. The pitot tube pump provided in the present disclosure has a single-stage structure and few components, and thus the structure is simple and reliable, compact in size, parts can be easily replaced and the maintenance is relatively simple. Compared with other pumps, the later disassembling and maintenance are simpler and easier. Due to its simple structure, the input of manpower and material resources as well as production and maintenance costs are reduced, and the pitot tube pump is more economical and practical to use.

An application of Bone Marrow Mesenchyml Stem Cell Exosomes (BMSC-Exos) in treating Parkinson's disease (PD) is provided, wherein the BMSC-Exos are generated by stimulating BMSCs with a culture solution and extracted from the culture solution after passage; and the culture solution of the BMSCs is an α-MEM culture solution containing FBS and PS. The BMSC-Exos can greatly improve a motor function of a model mouse with PD, protect dopaminergic neurons of the model mouse with PD, improve an olfactory function of the model mouse with PD, and also inhibit the activation of olfactory astrocytes of the model mouse with PD.

A millimeter-wave broadband substrate integrated hybrid dielectric resonator antenna is provided. The hybrid antenna includes: a first dielectric substrate with high dielectric constant, a second dielectric substrate with low dielectric constant, and a third dielectric substrate with low dielectric constant sequentially stacked from top to bottom. The first dielectric substrate and the second dielectric substrate are adhered by a first adhesive sheet; the second dielectric substrate and the third dielectric substrate are adhered by a second adhesive sheet; a middle of a top surface of the second dielectric substrate is printed with a metal ring patch; a top surface of the third dielectric substrate is formed with a metal ground plane, and the metal ground plane is etched with a feed slot; and a bottom surface of the third dielectric substrate is disposed with a microstrip line.

The invention relates to the field of biomedical engineering, and discloses a hemostatic agent for jaw central hemangioma hemorrhage and a preparation method and application thereof. The invention is as follows: chitosan powder and organic weak acid are added into organic alcohol to react, so as to prepare chitosan weak acid salt, and then the chitosan weak acid salt is mixed with carboxymethyl chitosan in proportion to obtain the hemostatic agent of the invention. The hemostatic agent of the invention has good fluidity and plasticity. When applied to the hemostasis of jaw central hemangioma hemorrhage, the hemostatic agent of the invention can quickly reach the point of jaw central hemangioma hemorrhage without any stimulation and damage to the tissue. In addition, the hemostatic agent of the invention can inhibit the growth of bacteria, eliminate cross infection, and is easy to clean and remove. Therefore, the hemostatic agent of the invention can safely and effectively treat the massive hemorrhage of jaw central hemangioma, which is worthy of clinical promotion. At the same time, the hemostatic agent of the invention can also be used for hemostasis of hemorrhage points in tissue cavities with special structures.

A traditional Chinese medicine compound preparation for treating Parkinson's disease and its preparation method and application are disclosed. The traditional Chinese medicine compound preparation comprises traditional Chinese medicine formula components and the traditional Chinese medicine formula components comprise the following raw material or raw material extracts by mass: 6-15 parts of uncaria rhynchophylla , 3-9 parts of gastrodia elata , 6-12 parts of Gentiana macrophylla , 10-20 parts of raw Astragalus membranaceus , 10-20 parts of prepared rehmannia roots, 10-20 parts of achyranthes roots, 10-20 parts of wolfberry fruits, 10-20 parts of angelica sinensis , 10-20 parts of fried atractylodes macrocephala , 6-15 parts of fried spina date seeds, 3-12 parts of walnut kernels, 3-9 parts of safflower, and 20-30 parts of zaocys dhumnade.

A depth network detection method for diabetic retinopathy based on a genetic fuzzy tree. The method includes: first, enhancing a retina image to widen a lesion area, and compress a normal area; next, building a network model U-net to accurately segment images of retinal blood vessels and blood vessel tips; subsequently, performing training according to the vascular images segmented by the model and real diagnosis results, so as to construct an interpretable fuzzy decision tree; then, encoding weights of the decision tree and constructing a fitness function, and a plurality of decision trees being combined and optimized based on a genetic algorithm; and finally, introducing an accuracy index to dynamically adjust a penalty term in a loss function.

The present disclosure relates to a 2-substituted imidazolidine derivative containing an aryl bipyridyloxy structure, and a preparation method and use thereof, which is obtained by the reaction of 2-substituted imidazolidine and aryl bipyridyloxy compound. The 2-substituted imidazolidine derivative containing an aryl bipyridyloxy structure has a good insecticidal effect on harmful insects, and the compound can be used to prepare insecticides in the fields of agriculture, horticulture, etc.

A recombinant human collagen and a method for building same are provided. The amino acid sequence of the recombinant human collagen is SEQ ID NO. 1: GPAGARGNDGATGAAGPPGPTGPAGPPGFP. The recombinant human collagen does not have a signal peptide and a transmembrane domain and is a novel hydrophilic protein. In addition, the protein does not have an antigenic determinant and does not elicit an immunological rejection response when applied to human body. The present invention further discloses a method for building and synthesizing a low-immunogenic hydrophilic recombinant human collagen. The recombinant human collagen synthesized by using the present invention has high purity, no virus risk, and a high expression level. The protein can be widely applied to related biomedical products, regenerative medicine products, tissue engineering and beauty products, health care products, cosmetic products, among others.