60results about How to "Keep the inherent characteristics" patented technology

A surface mount ring assembly for loudspeakers which comprises a "hard' ring in which the speaker is secured. This hard ring is, in turn, secured to a resilient or "soft' ring which soft ring is secured in the wall opening. The soft ring has a durometer of between 30 to 90 and a dynamic loss modulus of 1010 Dynes/cm2 at 100 to 1000 Hz. This effectively isolates the loudspeaker from the resonant frequency of the structure in which the speaker is secured.

The invention discloses a thermal desorption method for contaminated soil, which comprises the following steps of: performing thermal desorption on the contaminated soil at the temperature of between 400 and 650 DEG C; incinerating gaseous contaminant-containing flue gas which is discharged by the thermal desorption step at the temperature of between 750 and 1,200DEG C; and performing afterheat utilization and tail gas treatment on the incinerated flue gas. When the thermal desorption method is used for treating the contaminated soil, the destruction and removal efficiency for the organic contaminants in the contaminated soil is over 99 percent, the tail gas meets the emission standard, and the possible secondary pollution in the process of treating the contaminated soil is stopped, so that the effective innocent treatment is realized and the original reutilization property of the soil is maintained.

The present disclosure relates to a communication method and system for converging a 5G communication system for supporting higher data rates beyond a 4G system with a technology for IoT. The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. The present application discloses a method and device for transmitting and receiving signals based on a filter bank. The device comprises: a CS-DFT spreading unit for generating two data flows by applying a CS-DFT spreading operation to a first complex-value data flow input thereto; a sub-carrier mapping unit for mapping each of the two data flows to corresponding sub-carriers; and an OQAM modulator for generating OQAM signals by applying an OQAM operation to the data flows mapped on sub-carriers.

A band, bracelet, strip or patch to be worn around the wrist or ankle or removably attached to the back of the wearer's hand. Each article is treated with an anti-microbial agent (e.g., tea tree oil) that is capable of killing germs and potentially harmful bacteria. The band, bracelet, strip or patch is impregnated with the anti-microbial agent during manufacture or saturated with the agent by the wearer following manufacture. The agent is delivered to the skin (e.g., the hands) of the wearer by way of either dispersion (exudation) and migration (mixed with the wearer's normal body oil) or by direct touch contact with and transmission to the wearer's fingers so as to reduce the spread of illness and disease.

A surface mount ring assembly for loudspeakers which comprises a ‘hard’ ring in which the speaker is secured. This hard ring is, in turn, secured to a resilient or ‘soft’ ring which soft ring is secured in the wall opening. The soft ring has a durometer of between 30 to 90 and a dynamic loss modulus of 10¹⁰ Dynes/cm² at 100 to 1000 Hz. This effectively isolates the loudspeaker from the resonant frequency of the structure in which the speaker is secured.

The invention discloses a method for manufacturing a reused fresh-keeping isolation layer in rubber tire preparation. According to the method, a linear casting die head is connected with one or more screws, polyolefin materials with different characteristics extruded out by different screws composite in the die head so as to form cast polyolefin cast films of the composite materials casted by the same die head; and the linear casting die head casts melting polyolefin materials with the same or different characteristics at the same time, and the sheet rubber fresh-keeping isolation layer with different characteristics which can be reused can be formed by through hot pressing by two press rolls, cooling by multiple cooling rolls, and one-time hot pressing composite curing. Through the method disclosed by the invention, the fresh-keeping isolation layer can be prepared in once-forming, the multilayer fusion fastness is extremely high, and is integrated into a whole; and the inherent characteristic of the fresh-keeping film is kept, as well as the fresh-keeping isolation layer can be circularly reused.

The invention discloses a zeolite imidazate framework nanoparticle composite fiber film and a preparation method thereof; the method uses the static spinning technology to carry out in-situ preparation of the polymer composite fiber film containing the zeolite imidazate framework nanoparticles; the zeolite imidazate framework nanoparticles are evenly distributed in the composite fiber film, and the zeolite imidazate framework nanoparticle content in the composite fiber film is 10-15wt%; the composite fiber film has strong gas adsorption capability, and the zeolite imidazate framework nanoparticles are evenly composited in the high-molecular matrix, thus improving the application values of same in real life.

The invention belongs to the field of polymer materials, and particularly relates to an ultra-low temperature-resistant toughening material for injection molding-grade nylon and a preparation method of the toughening material. Raw materials of the ultra-low temperature-resistant toughening material comprise: in parts by weight, 70-80 parts of ethylene-propylene-diene monomer rubber, 20-30 parts ofethylene-octene copolymer, 5-10 parts of dibenzoyl peroxide, 0.5-2 parts of maleic anhydride, 1-5 parts of KT-1, 1-5 parts of carbon nanotubes, 0.05-0.3 part of solid initiator, 0.05-0.3 part of liquid initiator, 0.1-0.5 part of thermal stabilizer, 0.1-0.3 part of antioxidant and 10-20 parts of nylon 6. The prepared nylon toughening agent belongs to injection molding-grade toughening agents, anda step of reaction-extrusion of nylon toughened by a toughening agent is omitted, so that the production cost is saved effectively; secondly, the toughening material can be used in an environment withan ambient temperature of 50 DEG C below zero, so that low-temperature resistance of the toughened nylon is improved effectively, and the notched impact strength of the toughened nylon is improved.

A file cloning process allows for quickly cloning files within a filesystem, such as when a user makes a copy of a directory containing files and subdirectories of files. A priority based main queue is filled by a depth first traversal of the directory to be copied with work items corresponding to files and subdirectories. Worker threads refer to the main queue for file cloning, subdirectory copying and directory traversal. Files that have not been modified since a most recent checkpoint are cloned without issuing a checkpoint request. Files that have been modified since the most recent checkpoint are moved to a delay queue. Once a checkpoint of the file system completes, the files in the delay queue are then moved to the main queue to retry cloning thereof. A secondary queue is also provided to prevent worker threads from becoming deadlocked in the main queue.

The invention is an ivory technical wooden fan blank bleaching technique, technical steps: (1), weight percent of each component in bleacher solution: 20-50% concentration oxydol 0.93457-0.71428, 5-30% concentration sodium hydroxide solution 0.01869-0.21428 and industrial alcohol 0.04674-0.071428; (2), bleaching: soaking separated fan blanks in the oxydol and sodium hydroxide solution for 5-10 hours, and fan edge in the oxydol, sodium hydroxide solution and alcohol solution for 10-12 hours; (3), washing: washing qualified fan blanks and edges by clear water to eliminate the solutions; (4)separating: making the fan blanks and edges whose whiteness is lower than 70% repeat the step (2); (5), drying: cold-placing the fan blanks and edges to dry, where water ratio is up to 12-14%. It keeps original property of timber, strong color lightfastness, etc.

The incorporation of calcium and at least one member selected from the group consisting of vanadium and scandium into an aluminum lithium alloy containing: lithium, copper, magnesium, zirconium, beryllium, titanium, nickel, manganese, gallium, zinc, and sodium provides an aluminum lithium alloy that: 1) exhibits improved ductility; 2) exhibits improved processability resulting in the capability to obtain higher yields of semi-finished products; 3) provides the ability to fabricate thin sheets, thin walled sections and forgings, all while preserving the inherent strength and operating characteristics of such alloys when applied to semi-finished products and parts thereof demanded by structural applications in these fields.

A spacecraft or space flying body is spin-stabilized as the body is expelled from an ejection tube, for example from a larger spacecraft. For imposing spin stabilization on the flying body, a guide groove is provided between an outer wall of the flying body and an inner wall of the ejection tube. The guide groove has at least partly a helical slope. Guide spheres or balls travel in the guide groove as the flying body is driven by a drive, such as a spiral spring or an electric motor, out of the ejecting tube.

The invention discloses a precision digital bobbin winder which comprises an electrical cabinet and a rack, wherein a control panel is arranged at the top end of the electrical cabinet; five groups ofwinding devices are mounted on the rack in an equal spacing manner; five groups of reciprocating wire guide box body mechanisms are mounted below the winding devices; each group of reciprocating wireguide box body mechanism is located below a position between two adjacent groups of winding devices; unwinding devices are arranged below the five groups of reciprocating wire guide box body mechanisms, and comprise unwinding motor seats and wire cake supports; shields are fixedly mounted at two ends of each wire cake support; each shield close to one side of each unwinding motor seat is fixedlyconnected with a transmission shaft; and a movable clamping head is movably mounted on each shield away from each unwinding motor seat. The precision digital bobbin winder disclosed by the invention is reasonable in overall structural design, can effectively accord with processing technologies for various yarns and various bobbins, and can be generally popularized and used.

The invention discloses an improving agent of soil polluted by Si/Fe composite cadmium and a preparation and application method of the improving agent. The method comprises the following specific steps: (1) mixing Fe(NO3)3 and NaOH solution to prepare a modifier; (2) taking purified diatomite and a modifier solution, uniformly mixing, and stirring to form a muddy state; (3) baking a mixture to obtain the improving agent of the soil polluted by the Si/Fe composite cadmium. The improving agent disclosed by the invention has the beneficial effects that after the improving agent is applied into the soil polluted by cadmium according to applying amount, the content of exchangeable cadmium in the soil can be reduced by 37.5%, the water content is increased by 58.2%, and organic matters and a pHvalue are not greatly changed; the cadmium pollution to the soil can be effectively controlled, meanwhile the stability of basic physicochemical properties such as the pH value and organic matters ofthe soil can be maintained, the raw materials are low-cost and easy to obtain, the process is simple, the cost is lower, and no secondary pollution is caused.

A touch panel includes a substrate, a first patterned conductive layer, a patterned passivation layer, and a second patterned conductive layer. The first patterned conductive layer is located on the substrate, and the first patterned conductive layer includes a plurality of first sensing pads and a plurality of second sensing pads, wherein a gap is formed between adjacent first and second sensing pads. The patterned passivation layer is located on the first patterned conductive layer, and the patterned passivation layer covers the gap and exposes at least a portion of each first sensing pad and at least a portion of each second sensing pad. The second patterned conductive layer is located on the patterned passivation layer.

The invention discloses a nano zero-valent ferrum based sewage treatment system, a treatment method and a preparation method of modified diatomite loaded nano zero-valent ferrum. The treatment systemcomprises a reduction treatment tank, a flocculation basin, an efficient sedimentation tank, a filter and a clear water basin which are sequentially connected, wherein the reduction treatment tank isused for treating sewage in the tank through the modified diatomite loaded nano zero-valent ferrum in the tank; the flocculation basin is used for flocculating pollutants in the sewage in the tank through a flocculant; the efficient sedimentation tank has a structure for separating mud and water in the sewage passing through the efficient sedimentation tank; the filter has a structure for trappingthe pollutants in the sewage passing through the filter; the clear water basin is used for adjusting a pH value of the sewage in the clear water basin to reach emission standards. According to the scheme, the nano zero-valent ferrum can fully react with nitrate, and thus, the efficiency of removal of the nitrate is high; meanwhile, the system has no need of strictly controlling pH conditions of reaction and is wide in applicable range; in addition, the consumption of agents is lowered, the operating cost is greatly reduced, the reaction conditions are mild, the process is safe, the cost of investment is low, the process is simple, and the operating maintenance is simple and convenient.

The invention provides a cell membrane magnetic carbon nanotube drug screening material and a preparation method and application. The preparation method includes the steps that MCNTs are modified by EDC/NHS to prepare a functional MCNTs material; HEK293 cells with high ephrinb2 expression are cultured, cells are collected in a logarithmic phase, and cell membranes are obtained; and a covalent immobilization strategy is adopted in the functional MCNTs material and the cell membranes, and the cell membrane magnetic carbon nanotube drug screening material is prepared. The invention further provides application of the cell membrane magnetic carbon nanotube drug screening material in screening drug lead compounds targeting membrane receptors in traditional Chinese medicine. According to the cell membrane magnetic carbon nanotube drug screening material and the preparation method and application, the stability of a cell membrane coating is improved, the storage life of a cell membrane bionicmaterial is prolonged, and reproducibility is good.

An interior permanent magnet motor comprising a rotor having a set of permanent magnets placed within the interior of the rotor and a stator which surrounds the rotor and has a set of stator teeth defining slots between adjacent teeth. The stator also includes a plurality of stator windings that extend around the teeth and within the slots, the rotor and stator defining an airgap there between, in which an outer peripheral surface of the rotor that faces the stator across the airgap is provided with a respective eccentric bulge in the region of each rotor magnet. The bulge has a part-elliptical shape, the centre of the circumference of the bulge lying on or close to an axis that passes through the axis of rotation of the rotor and through a point on or close to the circumferential centre of the associated magnet, and in which the two ends of the part-elliptical bulge respectively connect to a region of the periphery that interconnects to an adjacent bulge, in which the dimensions of the bulge are selected so as to optimise the motor in terms of minimising variations in cogging torque that arise due to geometric manufacturing errors.