207results about How to "The method is simple and efficient" patented technology

An airflow apparatus comprising a stator section, at least one stator blade and a plurality of mounting flanges disposed on the stator section is provided. Additionally, the airflow apparatus includes at least one slot disposed between the plurality of mounting flanges, a rotor assembly coupled to the at least one stator blade, whereby the rotor assembly has a proximal end and a distal end. Furthermore, the airflow apparatus includes at least one fan blade coupled to the rotor assembly. The airflow apparatus also includes a locking apparatus, whereby the locking apparatus includes at least one mounting member and at least one coupling member, wherein the at least one slot is coupled to the at least one coupling member.

The invention relates to a preparation method of 2, 5-disubstituted thiophene compound I and the usage of the 2, 5-disubstituted thiophene compound in preparation of compound V. The preparation method is used for synthesizing the compound I by a 'one-pot' method through compound II and compound III under the condition that sulfur reagent exists. Compared with the prior art, the invention has the advantages of being easy in material obtaining, mild in reaction condition, simple and convenient in operation, high in yield, suitable for industrialized production and the like.

Methods and devices for generating stable, tunable and intense output light pulses are provided. A primary beam of light pulses is used to form a filament in an interaction zone. A secondary bean of light pulses is superposed with the filament and interacts therewith to generate the output light pulses. The parameters of the primary and secondary beams in the interaction zone can be controlled to obtain targeted optical characteristics of the output pulses. Multiple secondary beaus may also be used.

An ocean wave energy system is for generating power from ocean waves. The system comprises wall components defining one or more channels for guiding propagation of ocean waves therealong. Each channel has a first end for receiving the ocean waves and a second end remote from the first end. A float arrangement is disposed along each of the one or more channels between its first and second ends. Moreover, the float arrangement being arranged in size to progressively absorb energy from the ocean waves commencing with longest wavelength components in the waves and finishing with shortest wavelength components in the waves. The ocean wave energy system is capable of extracting energy efficiently and conveniently from ocean wave motion.

The invention discloses a forming method for a nano particle reinforced aluminum-based composite material and belongs to the field of metal casting forming. Nano ceramic powder and micro size aluminumpowder or aluminum alloy powder are prepared into mixed powder with the nano ceramic particle content being 3-10%, the mixed powder is mechanically mixed into composite powder in a seal tank under argon protection, and the composite powder is hot-pressed into prefabricated blocks with the quality being about 150-200 g. The prefabricated blocks are melted after reaching about 750 DEG C, then mechanical stirring is conducted, and then high-energy supersonic vibration is conducted. Through ultra-low-speed laminar flow pressure casting, a composite material melt is pressed into a mold cavity of amold, mold opening is conducted for piece taking-out, and a nano ceramic particle reinforced aluminum-based composite material part with the mass fraction being 3-10% is obtained. According to the forming method for the nano particle reinforced aluminum-based composite material, the forming technique is simple and easy to achieve, the effect is good, and the problems that in casting, a ceramic particle reinforced aluminum-based composite material with the high mass fraction is large in viscosity and poor in liquidity, and ceramic particles are easy gathered are solved.

The invention discloses a bi-metal layered hydroxide chelated Ti3C2-MXene catalyst as well as a preparation method and an application thereof, and relates to the technical field of electrochemistry. The preparation method of the bi-metal layered hydroxide chelated Ti3C2-MXene catalyst comprises following steps: Ti3AlC2-MAX is taken as a raw material, and Ti3C2-MXene is obtained with a LiF+HCl stripping method; hydroxide of Fe and Co is mixed with Ti3C2-MXene, the mixture is heated to 120 DEG C under protection of Ar gas and kept at the temperature for 3 h, and FeCo-LDH/Ti3C2-MXene is obtainedby centrifugation and 60-DEG C vacuum drying. The preparation of the bi-metal layered hydroxide compound is simple and safe to operate, a glassy carbon electrode supported with the FeCo-LDH/Ti3C2-MXene compound is taken as a working electrode, the electro-catalysis of hydrogen evolution process by cathodic water oxidation is studied, the initial potential is lower, and hydrogen output is larger.

The invention discloses a method for separating an element Pd from the high-level radioactive waste, which comprises the following steps: (1) adding concentrated nitric acid in nitrate solution of the high-level radioactive waste which separates minor actinides for adjusting the concentration of the nitric acid to 1.7-2.3 mol/L; (2) leading the nitrate solution of the high-level radioactive waste after the adjustment of the concentration of the nitric acid to pass through a column filled with an absorbent, and leading the element Pd to be absorbed by the column filled with the absorbent; and (3) using nitric acid water solution of thiourea to elute the column filled with the element Pd, and eluting out the element Pd in the form of nitrate, wherein the concentration of the thiourea in the nitric acid water solution of the thiourea is 0.1-0.3 mol/L, and the concentration of the nitric acid is 0.05-0.15 mol/L. The method is simple and high-efficient, the selectivity of the column is high, and the separation effect is good.

The present invention relates to an in vitro detection method that whether a sample contains target nucleic acid or not is detected by utilizing fusion protein of split-signaling morphogenetic protein and nucleic acid enzyme defect type Cas9 protein, a kit and a device.

The invention provides an unmanned aerial vehicle full-area reconnaissance path planning method of the unsupervised learning type neural network. Neural network parameters for controlling maneuveringof the unmanned aerial vehicle are obtained through iterative offline learning, so that the unmanned aerial vehicle can reconnaissance the whole area as quickly as possible on the premise of autonomously avoiding threats. Meanwhile, the maneuvering decision neural network obtained by the method has good mobility and universality in different terrains, and a new solution is provided for the unmanned aerial vehicle in intelligent path planning and autonomous maneuvering decision directions. The method is simple, convenient and efficient, the problem of re-planning or re-planning of the unmannedaerial vehicle due to environmental information change is effectively reduced, and the training time cost is effectively saved.

The invention discloses core-shell type emulsion with PTFE as a core and a preparing method thereof. PTFE dispersion liquid and deionized water are added into a three-necked flask with a constant-pressure dropping funnel and a spherical condenser pipe according to mass parts to be stirred evenly and heated in nitrogen so that seed emulsion can be obtained; mixed monomer is dropped through the constant-pressure dropping funnel, the total amount of monomer is 10-1,000 according to mass parts, swelling is conducted, then, initiator is added for initiating polymerization, reaction is conducted for 24 h, filtering is conducted, ammonium hydroxide is used for adjusting the pH value of the solution after cooling, and the core-shell type emulsion with PTFE as the core is obtained. The level of the adhesive force of an emulsion coating and a rubber surface can reach 4B, and the adhesive force is improved remarkably; contact angle and water absorption test results of emulsion rubber films show that the contact angle of the emulsion latex films can reach 117.94 degrees, the water absorption can be as low as 9.62wt%, and the hydrophobicity of the emulsion latex film is good through comprehensive analysis.

The invention provides a method for preparing o-alkoxyphenol from epoxy cyclohexane. The method comprises the following steps: (1) under an alcoholysis condition, contacting epoxy cyclohexane and alcohol with a catalyst, and separating so as to obtain o-alkoxyphenol; (2) under a catalytic dehydrogenation condition, contacting the o-alkoxyphenol with a dehydrogenation catalyst, whose active component comprises the VIII group metal elements. The method can synthesize o-alkoxyphenol directly from epoxy cyclohexane, and furthermore has the advantages of simple process and high efficiency.

The invention relates to a method for low-temperature copperizing of the surface of titanium or a titanium alloy. The method comprises the steps that surface ultrasonic rolling treatment is conductedon a titanium or titanium alloy workpiece under the condition of ultralow temperature to enable the surface of the titanium or titanium alloy workpiece to plastically deform and sequentially form a gradient nano-structure layer including equiaxial nano-crystals, lamellar nano-crystals and macro-crystals from the most superficial layer to a core part; the workpiece subjected to ultrasonic rolling treatment is subjected to degreasing, oil removal and acid cleaning activation treatment; then the workpiece is plated with copper, cleaned and blow-dried; and finally the treated workpiece is placed into a vacuum annealing furnace to be subjected to copperizing treatment and then taken out for air cooling, a copper-plated layer is stripped, and cleaning and blow drying are carried out. According to the method, the copperizing temperature of the surface of the titanium or titanium alloy can be greatly decreased, the copperizing time is shortened, the copperizing thickness is increased, qualitycontrollability of an obtained copperized layer is strong, the copperized layer is uniform, flat and good in finish degree and has the good antibacterial property and biocompatibility, and the methodcan meet the clinical demand for human body hard tissue implants.

The invention relates to a method for continuously extracting flaxseed gum and secoisolariciresinol diglucoside from flaxseed meal. The method comprises the following steps: 1) separation of shells and cores of flaxseeds: pulverizing and sieving flaxseed meal, and separately collecting upper-layer flaxseed shells and lower-layer flaxseed cores which are sieved; 2) extraction of flaxseed gum: taking the flaxseed shells as raw materials, and extracting the flaxseed gum with hot water in a microwave assisted manner; 3) extraction of secoisolariciresinol diglucoside: mixing and extracting the degummed flaxseed shells and an ethanol-sodium hydroxide solution to obtain coarse secoisolariciresinol diglucoside; and 4) purification of the secoisolariciresinol diglucoside: purifying the secoisolariciresinol diglucoside coarse product by using macroporous resin to obtain high-purity secoisolariciresinol diglucoside. The flaxseed gum and the secoisolariciresinol diglucoside are continuously extracted from the flaxseed meal, a new way for fully utilizing the flaxseed meal is provided, meanwhile, a convenient and speedy method for preparing various effective constituents of the flaxseeds is provided, flaxseed oil making by-products are utilized effectively, and the production cost of target products is reduced. The method has the advantages of low energy consumption, high product extractingrate, high economic benefit, low environment pollution and the like, and is suitable for large-scale production.

The invention relates to an immunity magnetic nanometer particle cell separator that contains inner nuclear layer, N-(2- amino group ethyl)-3-amino group propyl tri-methoxyl group silicane intermediate layer, and antibody and/or ligand outer shell. The invention also relates the method to use the separator.

The invention discloses a preparation method for lignin drug sustained release microspheres. The preparation method comprises the steps of (1) preparation of an internal phase solution; (2) preparation of a middle phase solution; (3) preparation of an external phase solution; (4) preparation of an oil-water-oil (o/w/o) dual emulsion; and (5) synthesis of mono-dispersed lignin drug sustained release microspheres. By adoption of the preparation method for the lignin drug sustained release microspheres disclosed by the invention, the obtained microspheres are uniform in particle size and controllable in appearance, and have the characteristics of environment protection, non-toxic property and the like; in addition, the preparation method is simple and effective, low in cost, and capable of effectively controlling release of a target drug, so that an efficient, simple and convenient method is provided for drug release; and therefore, the preparation method has high industrial application prospect.