202results about How to "Help to separate" patented technology

A surgical stapling and severing instrument particularly suited to endoscopic articulates an end effector by having a general articulation mechanism that converts rotational motion from a handle portion. A firing bar longitudinally translates between the handle portion and the end effector. The firing bar head is thickened in order to present an undistorted cutting edge and engagement features to the opposing jaws of the end effector. The firing bar also advantageously includes a thinned or tapered proximal portion in the form of a strip or band that negotiates the articulation mechanism flexibility. To prevent buckling of the firing bar strip during firing, a pair of support plates adjustably flank the firing bar strip through the articulation mechanism. To advantageously prevent pinching, retaining bars are positioned between the support plates above the firing bar to maintain spacing therethrough.

This invention discloses a production method of flexibility humidity sensor. Its character is washing a dimethyl siloxane interlayer on silicon dice carrier firstly, after solidification in room-temperature, activing the surface with oxygen plasma, then washing high viscosity polyimide again and procuring with staged technology, then, overlapping and depositing all the metal coating and using stripping technology and wet-method corroding figure technology to firm mental humidity-dependent resistor and electric connector, after this, overlapping a light low viscosity PI protective layer, using wet method to corrode the outside metal press welding part; then putting the device on the heating plate and peeling the interlayer from the flexible carrier, after all, putting the flexible carrier peeled into the bake oven to solidify it to two PI membranous layers completely, so realizing the compatible craft. The method to make it is simple, the cost is low and the rate of finished products is high, and it is more near the achievement of mass production and the integration of the high density sensor.

The invention discloses effective description based on visible production system in the advanced manufacture and automatic technique domain, which is characterized by the following: basic data maintenance establishes and maintains basic information of production device or equipment to provide basic data for production system modeling; data collection collects the needed data for modeling according to the dispatching time scale; production technique description provides production technique flow visible description for production system; model generation forms production system resource data text file of model base requirement according to the input optimum dispatching parameter of user. The invention can dispose wide dispatching problem in the production course.

The invention provides a microfluidic chip for separation and detection of a whole blood sample. The microfluidic chip comprises a chip body, which is provided with a sample flow channel, wherein thesample flow channel comprises a sample injection zone, a sedimentation zone, a mixing zone, a detection zone and a waste liquid zone, the sample injection zone, the sedimentation zone, the mixing zone, the detection zone and the waste liquid zone are sequentially connected, the sedimentation zone comprises a sample injection part and a sedimentation part, a ratio of the maximum width of the sedimentation part to the maximum width of the sample injection part is 2-10, the sedimentation part has a structure with the wide middle portion and both narrow edge portions, the front side walls and therear side walls of both end portions of the sedimentation part are respectively an inclined surface, the extending lines of the front side wall and the rear side wall intersect to form an included angle, and the front side wall and the rear side wall of the middle portion of the sedimentation part are parallel surfaces parallel to each other. According to the present invention, the microfluidic chip can combine the separation and the detection of the plasma in whole blood without the complicated whole blood sample pretreatment process, and can quickly and quantitatively detect the single or multiple proteins or other indicators in whole blood.

The invention discloses a preparation method of a silver phosphate/graphene nanocomposite. The method has the advantages that a light-assisted reducing process is adopted, the process is simple, and the cost is low, so that the method is suitable for large-scale production and industrial production. The prepared silver phosphate/graphene nanocomposite consists of silver phosphate nanoparticles and graphene nanosheets, wherein the graphene nanosheets cover the surfaces of the spherical silver phosphate nanoparticles with sizes of about 200nm, and the two are in close interface contact. The silver phosphate/graphene nanocomposite disclosed by the invention is a novel visible-light-driven photocatalyst which is more efficient and stable.

The invention discloses a layered-structure asymmetric MXene (abbreviated as aMXene) and a derived heterojunction thereof. After one of top or bottom passivating functional group layers of a layered-structure symmetric MXene is removed, an aMXen with a high dipole moment is obtained. Proper single-layer transition metal disulfide (mTMDC) is selected to carry out passivation on one exposed side ofthe aMXen, so that an aMXen/mTMDC heterojunction is derived from the aMXen. According to the aMXen/mTMDC heterojunction, different layers have the high potential difference, so that charges between two-dimensional structures are allocated again conveniently and thus the energy band structure, relative positions of band edges, and generation and changing of carriers are controlled. Therefore, the aMXene/TMDC heterojunction has the great competitiveness in the electronics and chemical application fields and has broad application prospects in fields of spintronics, electronics/ photoelectron, andcatalyzation/photocatalysis.

Novel carbon molecular sieve (CMS) compositions comprising carbonized vinylidene chloride copolymer having micropores with an average micropore size ranging from 3.0 to 5.0 angstroms. These materials offer capability in separations of gas mixtures including, for example, propane/propylene; nitrogen/methane; and ethane/ethylene. Such may be prepared by a process wherein vinylidene chloride copolymer beads, melt extruded film or fiber are pretreated to form a precursor that is finally carbonized at high temperature. Preselection or knowledge of precursor crystallinity and attained maximum pyrolysis temperature enables preselection or knowledge of a average micropore size, according to the equation sigma= 6.09 +(0.0275*C) - (0.00233*T), wherein sigma is the average micropore size in Angstroms, C is the crystallinity percentage and T is the attained maximum pyrolysis temperature in degrees Celsius, provided that crystallinity percentage ranges from 25 to 75 and temperature in degrees Celsius ranges from 800 to 1700. The beads, fibers or film may be ground, post-pyrolysis, and combined with a non-coating binder to form extruded pellets, or alternatively the fibers may be woven, either before or after pre-treatment, to form a woven fiber sheet which is thereafter pyrolyzed to form a woven fiber adsorbent.

The invention provides a method for preparing a thermosetting phenol resin. The method comprises the following steps: mixing a phenol compound, an aldehyde compound, an amine compound and a catalyst to have a reaction, standing, layering, dehydrating in vacuum, thus obtaining the thermosetting phenol resin. Compared with the prior art, the method has the advantages that the added amine compound participates in the reaction, the polarity of the resin can be reduced by the reaction products, which is beneficial to separation of the resin layer from the water layer; therefore, the dehydration time at the later stage is reduced, the solid thermosetting phenol resin with stable quality is favorably prepared; and the method is simple in operation and easy to control.

The invention disclosed a baffle type tray for gas-liquid mass transfer in the field of petrochemical processing to resolve the problem of low efficiency, complex structure, large investment and small processing capacity for gas-liquid mass transfer for the present float valve and baffle type tray. The tower plate (3) of the baffle type tray of the invention is composed of the down steps along the direction of the liquid flow. The sieve pore (5) or the valve orifice on which float valve is fixed are opened on each step of the tower plate (3). A oblique downwards arc skirt plate is mounted on the top of the arc where the highest step tower plate (3) intersects with the wall (1) of the tower under the tower plate (3). The invention may be used in the rectification tower, absorber, thionizer and regeneration tower, etc.

The invention discloses a polymer solar cell with a novel structure and a manufacturing method of the polymer solar cell, which belong to the technical field of a solar cell. An electric collecting layer of the polymer solar cell is divided into two layers; a first electric collecting layer is a two-dimensional plane film covered on a transparent electric base plate; a second electric collecting layer is arranged on the first electron collecting layer; and the second electric collecting layer is a film with a one-dimensional nanometer array structure. The manufacturing method for the second electric collecting layer comprises but is not limited to a solvothermal method, a template method, an electro-deposition method, an anodic oxidation method and the like. According to the polymer solar cell, the film with the one-dimensional nanometer array structure grows on the two-dimensional plane film to be as an electric collecting material; and the polymer solar cell has the advantage in long-term stability of photoelectric property of the battery compared with the traditional structure, is specially beneficial to the separation of load and directionality for transmission of the separated load and can effectively improve light current density and photoelectric conversion efficiency of the battery.

The invention discloses a crop classification and identification method under a strong noise background. The method comprises the following steps of: shooting a plurality of pictures of various cropsby using a multispectral camera to form a picture set; obtaining the NDVI value of each pixel point and segmenting the NDVI value into plant areas; replacing the non-plant area with a pure color background to highlight the plant area, performing image preprocessing to form a multispectral data set, and dividing the multispectral data set into three data sets, namely training, testing and verifying; inputting the training data set into a preset convolutional neural network model for training through a transfer learning method to obtain a convolutional prediction neural network model, and inputting the test data set into the convolutional prediction neural network model for accuracy testing to obtain a qualified convolutional prediction neural network model; and inputting the verification data set into the convolutional prediction neural network model, carrying out classification and identification on crops in the verification data set, and obtaining a classification result. According tothe method, the influence of a strong noise background on crop classification and recognition is reduced, and the recognition efficiency and prediction capability of the model are improved.

The invention relates to a preparation method and application of a mixed matrix membrane containing MOF filler. The method provided by the invention adopts a metal organic frame material MOFs as the filler, takes a glassy polymer as the organic membrane material, and uses a solution mixing process to prepare the mixed matrix membrane (MMMs). The MOF material containing organic ligand has good combination with the polymer, thus avoiding defects. The prepared mixed matrix membrane has good application prospects.

The invention discloses a preparation method for a photo-Fenton catalyst. The method first prepares Alpha-Fe2O3@C, surface treatment is then carried out on the prepared Alpha-Fe2O3@C, the surface-treated Alpha-Fe2O3@C is then mixed with Na2WO4.2H2O, Bi(NO3)3.5H2O and sodium citrate, and after hydrothermal reaction, the catalyst is prepared. With Alpha-Fe2O3 as a core, amorphous carbon as an intermediate layer and Bi2O3-Bi2WO6 heterojunction as an outermost layer, the catalyst not only can promote photo-induced charge separation, but also remarkably enhance the adsorption of dye molecules by the catalyst, and has a remarkable degradation effect of RhB. The specific surface area is up to 67.95m<2>/g, and as the dosage of H2O2 is increased, the rate of RhB degradation is gradually increased;and when the concentration of H2O2 is 5mol/L, the reaction rate constant of the Alpha-Fe2O3@C@Bi2O3-Bi2WO6 catalyst in degrading RhB is 0.01876min<-1>, which is 136 times the reaction rate constant ofphotocatalytic degradation.

The invention discloses a preparation method of an oxide quantum dot modified graphene/titanium oxide photocatalysis material. The preparation method comprises following steps: modification with a conductive polymer is adopted so as to obtain a conductive polymer coated graphene; sol-gel method is adopted so as to prepare a sol from conductive polymer coated graphene, butyl titanate, and an oxidequantum dot; and aging, gelling, drying, grinding, and heat treatment are adopted to obtain the quantum dot modified graphene/titanium oxide porous nanometer catalysis material. According to the preparation method, surface modification with the conductive polymer is capable of improving the dispersion performance and the surface activity of graphene, loading graphene nanosheets with titanium oxidenanometer particles uniformly, and controlling the particle size of the nanometer particles; and in addition, construction of a oxide quantum dot-titanium oxide heterojunction is adopted to widen thespectrum response range and the photocatalytic activity of the catalysis material.

The invention discloses a double-tube vacuum film sperm separation method and a separation device and mainly relates to the field of cytobiology. The separation device comprises an inner centrifugal tube and a centrifugal tube, wherein the lower part of the inner centrifugal tube is of a cone structure which is opened at the tip; a filter device is mounted in the inner centrifugal tube; an inner tube seal cover is arranged at the orifice at the top of the inner centrifugal tube. By using the device to separate a seminal fluid, a density gradient solution is prepared by adopting a classical density gradient sperm separation method and a sperm lotion and sperms are sequentially dropped onto the filter device, and the inner centrifugal tube after low-speed centrifugal treatment is taken out, so that the inner centrifugal tube a is separated from the centrifugal tube, and the residues in the centrifugal tube are part of alpha% density gradient solution and bottom spermatia. The method and device disclosed by the invention have the beneficial effects that whether the seminal fluid is liquefied or not, seminal plasma and sperms are thoroughly separated through a simple operation; the damage on sperms in the pre-treatment process of the seminal fluid is avoided; the success rate, the recovery rate and the quality of sperms are excellent.

The invention discloses a normal-temperature modified sludge dehydrating agent. The normal-temperature modified sludge dehydrating agent comprises, by weight, 20-30 parts of calcium oxide, 15-20 partsof ferric chloride, 30-40 parts of modified starch, 15-20 parts of diatomite, 5-10 parts of volcanic rock, 20-30 parts of gelatin, 5-10 parts of polyacrylamide, 1-2 parts of bentonite, 2-3 parts of talcum powder, 2-5 parts of muck and 1-3 parts of chitosan. The normal-temperature modified sludge dehydrating agent obtained in the invention is an organic-inorganic mixture, is powdery, contributes to separation of water and sludge particles in sludge, greatly improves the dehydration performance and compressibility of modified sludge, has sterilization and deodorization effects, can kill most ofmicroorganisms, worm eggs and the like, and reduces the odor concentration of the sludge by 90% or above. The addition amount of the dehydrating agent is 2-5%, the addition amount is small, the costis low, and the modification effect is better than that of a traditional modified dehydrating agent.

The invention discloses magnetic composite nanoparticles and a preparation method and an application thereof. The magnetic composite nanoparticles have uniform particle size and have the diameter of 40-60 nm; an abasic site-containing DNA double-chain connected on the surface through avidin and biotin can be specifically identified and cut by a target protein abasic endonuclease I (APE1), and fluorophores or drug molecules are released; at the same time, the obtained magnetic composite nanoparticles have good dispersity, stability and biocompatibility, thereby being used for in-situ fluorescent imaging of the APE1 in living cells. In addition, because cancer cells usually overexpress the APE1, the magnetic composite nanoparticles can more effectively release the drug in the cancer cells and are expected to achieve accurate treatment of the cancer cells.

The invention discloses a deicing and snow-melting functional steel deck pavement material and a preparation method thereof. The deicing and snow-melting functional steel deck pavement material comprises three components A, B and C at the mass ratio of 100:(20-60):(150-350), wherein the component A is prepared from epoxy resin, an elastic modifier, an epoxy active diluent, an antifoaming agent and a dispersing agent; the component B is prepared from an epoxy hardener, a curing accelerator, a coupling agent and a pigment; and the component C is prepared from waste rubber powder, waste rubber particles, magnet powder and a whisker. According to the deicing and snow-melting functional steel deck pavement material, efficient deicing and snow-melting are achieved by adopting the synergistic effect of three modes, such as strain ice-breaking, strain heat release and microwave radiation heat generation. Compared with the prior art, the material disclosed by the invention is good in deformability, appropriate in strength, good in water-tightness, good in adhesive property, small in specific gravity, convenient to construct and maintain, low in deicing and snow-melting cost, low in energy consumption, high in efficiency, environment-friendly and wide in application prospect.

The invention discloses an efficient oxygen evolution electrocatalyst, which comprises a foamed nickel substrate, and a ferronickel-based oxide/phosphide with a heterostructure, wherein NiFe-LDH growson the foamed nickel matrix, and thermal phosphorylation is conducted to obtain the ferronickel-based oxide/phosphide with the heterostructure. According to the invention, heterogeneous NiFe2O4/NiFePnanosheet is prepared on NF, wherein the optimal NiFe2O4/NiFeP heterostructure can achieve stable performance in KOH with the concentration of 1 mol/L, and the anode current density of 10 mA cm<-2> can be generated only through the extremely low overpotential of 191 mV; the excellent OER activity of the NiFe2O4/NiFeP heterostructure can be attributed to: a 3D network structure having a good structure and composed of vertically staggered nanosheets having a large exposed surface area; and the synergistic effect between NiFe2O4 and NiFeP produces an optimal electron structure that facilitates charge separation and reduces the energy barrier of the OER process.

The invention discloses a multifunctional nut chip removal machine which comprises a discharging hopper, a conveying belt, first magnets, a scraping plate, a magnetic eraser, a second magnet, a containing screen, a base, springs, a vibrator, a motor, brushes, an air blower and a collection box. The conveying belt with the upwarped output end is arranged below the discharging hopper. The outlet endof the discharging hopper is located over the input end of the conveying belt. The multiple first magnets distributed at equal distance are embedded on the belt face of the conveying belt. The obliquely-arranged scraping plate is arranged below the output end of the conveying belt. The magnetic eraser is fixedly arranged at the bottom of the scraping plate. The second magnet is arranged at the position, located on the downstream portion of the scraping plate, below the conveying belt. The containing screen with the outlet end arranged obliquely downwards is arranged under the lower end of thescraping plate. Compared with the prior art, chip removal can be fast and efficiently carried out on a nut, the chip removal efficiency and effect to the nut are improved, the labor intensity of workers is reduced, and great convenience is brought to nut machining.

The invention discloses an aquatic plant compound, which comprises eight aquatic plants including zizania aquatica, lotus root, cress, gorgon fruit, arrowhead, chufa, brasenia schreberi and water chestnut. The weight ratio of zizania aquatica, lotus root, cress, gorgon fruit, arrowhead, chufa, brasenia schreberi to water chestnut is 2:2:1:2:2:2:1:2. The extraction method disclosed by the invention comprises the following steps: (1), crushing various raw materials at a high speed, and adding ultrapure water to collect a filtrate; (2), adding ultrapure water into filter residues to decoct continuously, and mixing filtrate with the filtrate collected in the step (1); (3), evaporating the mixed liquid till the weight of remained liquid is 10-18% of that of the mixed filtrate, and cooling to room temperature; (4), adding ethanol while stirring; and (5), standing and precipitating the liquid obtained in the step (4), carrying out suction filtrate to remove filtrate, collecting filter residues, washing the filter residues by using ethanol and acetone respectively once, and drying remained filter residues. Polysaccharide in the aquatic plant compound has good anti-tumor activity and low toxic and side effects, and can be used for preparing anti-tumor drugs.