33results about How to "Quick and efficient preparation" patented technology

The invention relates to the technical field of building structures, and particularly relates to a large-cross-section box column and a processing technology thereof. An auxiliary stiffening plate, a small stiffening plate and a positioning pin are connected between a bottom plate and a cover plate; a main stiffening plate and an upper cover stiffening plate are connected with the side surface of the box column; the main stiffening plate is connected with the bottom plate and the cover plate; a cross column and an inner partition plate are connected with the inside of the box column; and the structures are gradually connected into a whole through part preparation, welding of an H-shaped girder, welding of the box column, welding of a base and thermal treatment after welding. The product is efficient and fast to prepare, so that the large-cross-section box column is high in bearing capacity and high in stability.

The invention discloses an oil well acidification process and device for increasing oil-gas well yield. The oil well acidification device comprises an acid liquid tank and a waste liquid tank, whereina stirring tank is arranged in the acid liquid tank, a stirring device is arranged in the stirring tank, an acidification pipe column penetrates through a wellhead device and then extends into the bottom of a casing pipe, a nozzle is arranged at the bottom of the acidification pipe column, and pulse supercharging devices are arranged on the two sides of the acidification pipe column above the nozzle; and the waste liquid tank is connected with a liquid outlet of the wellhead device. The acidification process comprises the following steps that S1, acidification pretreatment is conducted; S2, preposed acid liquid is injected; S3, reaction acid liquid is injected; and S4, a neutralizer is injected in a pulse pressurization mode, so that the acid liquid enters an oil layer in a fluctuation mode, the swept area is enlarged, the injection effect of the acid liquid is effectively enhanced, residual acid liquid is neutralized in sections at the bottom of a well, the content of the acid liquidin flowback fluid is reduced, components of preposed acid liquid, reaction acid liquid and the neutralizer are optimized, the problem of oil layer blockage can be effectively solved, and the purposeof increasing the yield is achieved.

The invention belongs to the technical field of electrochemical catalyst material synthesis and particularly discloses a preparation method of a three-dimensional carbon network loaded FeCo difunctional oxygen catalyst. According to the method, a three-dimensional carbon netlike structure is constructed according to the property that chitosan is chelated with ferric chloride and cobalt chloride; NH<3> and CN gases (C<2>N<2+>, C<3>N<2+> and C<3>N<3+>) which are generated during urea decomposition in the pyrolysis process are utilized to etch carbon nanosheets generated by the chitosan in situ so as to further prepare N-doped carbon nanosheets; and Fe and Co catalyze urea under a high temperature to form carbon nano tubes, and the carbon nano tubes wrap FeCo alloy to crosslink into a three-dimensional carbon netlike structure which serves as the efficient difunctional oxygen electrocatalyst. Through the method, no solvent is involved, no auxiliary needs to be added, no template is involved, and only a simple pyrolysis mode after physical grinding is needed; and the method is simple in process route, environmentally friendly and low in cost, and the obtained product has a good difunctional oxygen electrocatalytic effect and shows extremely high application value.

The invention relates to a full-automatic PCB (printed circuit board) making system and method based on Internet of Things. The system is characterized by comprising a shell, a PCB laser printer, an etching trench, a rinsing trench device, a polishing trench device, a multi-joint manipulator and a control module, wherein the etching trench, the rinsing trench device, the polishing trench device and the multi-joint manipulator are arranged on the shell; the PCB laser printer is used for printing a PCB; the control module generates a control signal and sends the control signal to the multi-joint manipulator; the multi-joint manipulator is used for grabbing an external PCB, and placing the circuit board in the etching trench, the rinsing trench device or the polishing trench device. Through the interaction of the PCB laser printer, the etching trench, the rinsing trench device, the polishing trench device, the multi-joint manipulator and the control module disclosed by the invention, a complete PCB is manufactured; the manufacturing process is efficient and fast and can be used for small-scale production in schools or laboratories.

Vehicles, components, and methods are disclosed for preparing hot food during delivery or at a remote location. A multi-modal food distribution system may operate in one or more various modes, including a constellation mode, a cook enroute mode, and a pop-up kitchen mode, to deliver hot, prepared food to customers. The vehicles in the system may be configurable to change between each of the different modes depending upon information received by the system. The system may in the constellation mode include additional delivery vehicles that retrieve food from a vehicle that serves as a hub. The additional delivery vehicles may deliver the food to the delivery destination. In the cook enroute mode, the vehicle may prepare and cook food enroute to a delivery destination. In a pop-up kitchen mode, the vehicle may prepare food for pick up by customers.

A centrifuge vessel is configured to have at least two chambers therein separated by a divider, and with a spillway around a lip at an end of the divider to join the chambers. After centrifugation differing density phases of an original sample remain on opposite sides of the divider. Separate extraction ports are provided for removal of differing density phases of the original sample from opposite sides of the divider. A method of use of the centrifuge vessel includes centrifugation and extraction at differing orientations of the vessel for convenient and reliable extraction of differing density fractions from the original sample.

The invention discloses a preparation process of a glass fiber reinforced plastic oil tank with inner reinforcing ribs. The preparation process comprise step 1, glass fiber reinforced plastic fibers are spirally wound around a barrel body mold, a plurality of annular reinforcing rib forming grooves are formed in the barrel body mold, so that an inner shell body with an inner reinforcing rib structure is formed after the glass fiber reinforced plastic fibers are solidified; step 2, the barrel body mold is formed by splicing a plurality of barrel body mold plates, the barrel body plates shrink inwards in the radial direction, so that the barrel body plates are separated from reinforcing ribs of the inner shell, and the inner shell is pulled out outwards; and step 3, the glass fiber reinforced plastic fibers are wound spirally around the inner shell in a staggered mode to form a shell body. According to the preparation process of an FF oil tank with the inner reinforcing ribs, the FF oiltank with the inner reinforcing rib structure can be produced efficiently and conveniently.

The invention relates to the field of biological materials, and particularly relates to a collagen microfiber hemostatic material and a preparation method and an application method thereof. The preparation method comprises the following steps of: performing high-speed shearing on a solid collagen material to obtain collagen microfibers, dispersing the collagen microfibers in a water phase, modifying procoagulant active ingredients on the surfaces of the collagen microfibers through connecting molecules, performing freeze-drying treatment, and performing high-speed shearing treatment again to obtain the collagen microfiber hemostatic material. The collagen microfiber hemostatic material can be prepared simply, conveniently and efficiently through high-speed shearing, and the biological activity of the collagen material is kept as much as possible; the length range of the microfibers is 10-1000 microns, and the microfibers have high dispersibility and are favorable for spraying treatment; and the connecting molecules can efficiently and quantitatively load the procoagulant active ingredients on the surfaces of the collagen microfibers, so that the hemostatic effect of the collagen microfibers is enhanced. The collagen microfiber hemostatic material prepared by the preparation method is used for hemostasis of a bleeding wound surface in a spraying manner, such as hemostasis in a brain surgery or liver surgery process, and the effect of non-contact fixed-point hemostasis can be achieved.

The invention relates to a preparation device of an FRP container. Two rotary main shafts (2) driven by a power mechanism are installed on a support (1), multiple demoulding lifting mechanisms (4) aresheathed on the rotary main shafts (2), shaping molds (3) are sheathed outside the demoulding lifting mechanisms (4), the shaping mold (3) comprises a cylinder body mould and a sealing head ejectionmould (3.2), the cylinder body mould is formed by splicing multiple cylinder body templates (3.1) along an axial splicing seam (3.3) of the cylinder body mould, the top of the cylinder body template (3.1) is an inward arc section, an annular splicing seam (3.4) is formed between the top opening of the cylinder body mould and sealing head ejection mould (3.2), and the cylinder body mould spliced bythe cylinder body templates (3.1) is provided with multiple annular reinforcing bar grooves (3.5). The preparation device of the FRP container can produce FF oil tanks with inner reinforcing bars efficiently and conveniently.

The present invention provides a preparation method of titania coating materials applied to the dye sensitization solar battery, which is characterized in that organic titanium alkoxide is adopted as the predecessor body, the colloid of TiO2 that is stably distributed is prepared through the hydrolysis reaction of the organic titanium alkoxide. Organic polybasic acid is added into the colloid of TiO2 to adjust the pH value to be the subacidity (5.5-6.5), the organic residual substances in the colloid of TiO2 is filtered and removed by washing with vast organic solvent. Appropriate amount of industrial viscous agent is added into the clean TiO2 colloid after being washed to be grinded and mixed uniformly at a high speed so as to produce the titania coating material of the dye sensitization solar battery. The present invention has the obvious advantages of simple process, stable quality and friendly environment, and is a method that can be applied to prepare the titania coating material in large scale.

The invention relates to the field of biological materials, in particular to a collagen microfiber hemostatic material, a preparation method and a use method thereof. The solid collagen material undergoes high-speed shearing to obtain collagen microfibers. After dispersing the collagen microfibers in the water phase, the procoagulant active ingredients are modified on the surface of the collagen microfibers through linking molecules. Microfiber hemostatic material. Collagen microfiber materials can be easily and efficiently prepared by high-speed shearing, and the biological activity of collagen materials can be kept as much as possible; the length of microfibers ranges from 10um to 1000um, which has high dispersion and is conducive to spraying treatment. Linker molecules can efficiently and quantitatively load procoagulant active ingredients on the surface of collagen microfibrils to enhance their hemostatic effect. The collagen microfiber hemostatic material prepared by the present invention is used for hemostasis on oozing wounds by spraying, such as hemostasis during brain surgery or liver surgery, and can achieve the effect of non-contact fixed-point hemostasis.

The invention discloses an interwoven braided vamp, comprising a vamp body, at least one overlapping braided structure is woven on the vamp body, the overlapped braided structure includes at least one braided layer, and the braided layer is composed of at least one braided layer. The distance between each adjacent two overlapping weaving structures can be adjusted freely, and the width of the overlapping weaving structures can be adjusted freely. By weaving the overlapping weaving structures on the plain vamp, using different Different weaving materials have different organizational effects and functions. Weaving with decorative materials can play the role of decorating the upper; using functional weaving materials can increase the elasticity and make the upper more comfortable. Compared with the shape of the shape, it has more functions.

The invention provides a method for improving light emitting performance by automatically injecting Si ions to a silicon-based material. Based on an ion injection and annealing technology, 3-5 times of Si automatic ion injection of different energy is performed on a silicon thin film of the silicon-based material which refers to an Si substrate or an SOI substrate with the cleaned surface; and next, different parameters of the conventional annealing or quick thermal annealing can be adjusted to obtain the silicon-based light emitting material with excellent light emitting performance. The method has the core that the ion injection technology is adopted, and Si automatic ion injection is performed at the same dosage in an energy gradual decreasing mode, so that ion injection active layer thickness is improved, and the silicon-based light emitting material with high light emitting efficiency, low fluorescence annihilating speed and high temperature stability is achieved.