147results about How to "High performance features" patented technology

An implantable medical apparatus includes a structure formed from bioabsorbable polymers. The apparatus also contains a therapeutic agent dispersed throughout the structure or coated on the structure in such a manner as to elute the therapeutic agent when implanted in an anatomical conduit. The apparatus can be constructed from a blend of polymers and other agents. The apparatus is implanted into the conduit by expansion with a balloon or some other expandable means. The morphology or arrangement of the polymeric structure ensures that the device maintains its shape characteristics to ensure proper modeling of the vessel. In particular, the crystallinity of the polymeric structure is adjusted so as to resist recoil.

A wrought fiber sheet or air cleaning filter unit that exhibits high performance and is biodegradable so as to enable reducing load upon environment. The wrought fiber sheet is produced by coupling biodegradable fiber sheets having electret properties by means of a configuration reinforcing member of a biodegradable material. Further, the frame for accommodating the wrought fiber sheet is also constituted of a biodegradable member so as to obtain an air cleaning filter unit that exerts biodegradability as a whole.

Compliant / stretchable electroactive materials which exhibit self-healing / clearing properties are disclosed.

A bearing adapted to support and allow controlled relative movement with an opposed bearing surface. The bearing is constructed to have a long life by incorporating a surface that addresses many causes of friction and wear. The bearing includes a plurality of support members extending from a base. Together, the plurality of support members can support a load applied to the base through an opposed bearing surface. Additionally, the plurality of support members allow sliding modes of motion between the opposed bearings. These support members can move independently to accommodate irregularities located between the support member and the opposed bearing, such that plowing is reduced and wear to the bearings is minimized. The support members may also be configured to allow certain non-sliding modes of motion between opposed bearing surfaces while resisting other non-sliding modes of motion.

An object of the present invention is to provide a technology of reducing a nickel element in the silicon film which is crystallized by using nickel. An extremely small amount of nickel is introduced into an amorphous silicon film which is formed on the glass substrate. Then this amorphous silicon film is crystallized by heating. At this time, the nickel element remains in the crystallized silicon film. Then an amorphous silicon film is formed on the surface of the silicon film crystallized with the action of nickel. Then the amorphous silicon film is further heat treated. By carrying out this heat treatment, the nickel element is dispersed from the crystallized silicon film into the amorphous silicon film with the result that the nickel density in the crystallized silicon film is lowered.

A golf club head has a body defining a ball striking face. The body further has a first leg extending away from the ball striking face and a second leg extending away from the ball striking face wherein a void is defined between the first leg and the second leg. The body further defines a cover that extends over the void. The golf club head may further have support structures and adjustable weight members.

An apparatus may include a near field communication (NFC) antenna coil and a wireless power receiving coil. The NFC antenna coil and the receiving coil may be arranged on a magnetic sheet. The wireless power receiving coil may be concentrically disposed on the magnetic sheet within an inner periphery of the NFC antenna coil. An inner diameter of the wireless power receiving coil may be greater than or equal to an inner diameter of reference listener antenna coil RL-6, of the reference listener coils specified by the NFC forum.

In a nitride semiconductor laser device so structured as to suppress development of a step on nitride semiconductor layers, the substrate has the (11-20) plane as the principal plane, the resonator end surface is perpendicular to the principal plane, and, in the cleavage surface forming the resonator end surface, at least by one side of a stripe-shaped waveguide, an etched-in portion is formed as an etched-in region open toward the surface of the nitride semiconductor layers.

The invention relates to a sulfonated polymer applied to a lithium battery electrode as a binder as well as a method for preparing the lithium battery electrode. The sulfonated polymer is used as the binder in electrode slurry of the lithium battery electrode, the obtained lithium battery electrode is used for assembling a lithium battery, and the lithium battery is relatively long in charging-discharge cycle life and stable in work under a relatively high current density. The sulfonated polymer with a sulfonic acid group has excellent capacity of transferring lithium ions, so that the lithium ions can be rapidly transmitted back and forth between an electrode active material and an electrolyte, and the lithium battery which is stable to run under the rapid charging-discharging condition can be obtained. The sulfonated polymer which is used as the binder is sufficient in cohesion force and binding strength, and the electrode active material and a conductive medium are stuck onto a current collector by the sulfonated polymer and are unlikely to fracture and dust, so that the lithium battery has sufficient capacity and cycle performance as well as excellent rate capacity.

The invention relates to an epitaxial structure for nitride high electron mobility transistors of composite buffer layers, which includes that a growth nucleating layer is arranged on a substrate; a first buffer layer is arranged on the growth nucleating layer; a second buffer layer is arranged on the first buffer layer; a growth channel layer is arranged on the second buffer layer; and a growth barrier layer is arranged on the growth channel layer. The growth method includes baking the substrate at a high temperature in a reaction chamber after the substrate is washed and dried; growing the nucleating layer on the substrate, the first buffer layer on the nucleating layer, the second buffer layer on the first buffer layer, the growth channel layer on the second buffer layer, and the growth barrier layer on the channel layer; and reducing the temperature to the room temperature. The epitaxial structure for nitride high electron mobility transistors of composite buffer layers has the advantages of being still capable of forming conduction band discontinuity with a gallium nitride (GaN) channel layer, enhancing 2 dimensional electron gas (DEG) confinement, improving microwave performances and power characteristics of devices, being capable of improving the heat conductivity of the buffer layer, and effectively reducing self-heating effect of high electron mobility transistors (HEMT) of AlGaN buffer layer. Quality of crystals of AlyGal-yN buffer layer can be effectively improved, and the epitaxial structure is helpful for further improving the performance and reliability of devices.

A method for producing a bonded permanent magnet by additive manufacturing, the method comprising: (i) incorporating components of a reactive precursor material into an additive manufacturing device, the reactive precursor material comprising an amine component, an isocyanate component, and particles having a permanent magnetic composition; and (ii) mixing and extruding the crosslinkable reactive precursor material through a nozzle of the additive manufacturing device and depositing the extrudate onto a substrate under conditions where the extrudate is permitted to cure, to produce a bonded permanent magnet of desired shape. The resulting bonded permanent magnet and articles made thereof are also described.

A battery pack for high performance, radio-controlled toy vehicles, such as high speed vehicles with highly sensitive steering and / or driving (known as “digital proportional”) or other types of high performance toy vehicles / features requiring high voltage / high current. The battery pack provides improved performance for the toy, an improved layout of the pack / battery arrangement, improved safety features, and improved piracy prevention.

Ethylsilicate polymers and a method of making, specifically ethylsilicate polymer binders with reduced levels of regulated volatile organic compounds (VOCs) for use in the coatings industry and casting industry, and more specifically to stable, fast cure ethylsilicate polymer binders with low levels of regulated VOCs.

An ortho-mode transducer (100) comprising a first part (102) with a first port (106) for connecting a first rectangular waveguide (112) and a second port (108) for connecting a second rectangular waveguide (114). The signals in the two waveguides have orthogonal polarizations. The transducer also comprises a second part (104) with a third port (110)for connecting a common circular waveguide (116) in which the two orthogonal signals can be propagated. Symmetry axes of cross sections of the first and the second waveguides have orthogonal orientation. The first rectangular port (106) has its broad walls perpendicular to the circumference of the common circular waveguide (116) and the second rectangular port (108) has its broad walls alongside the circumference of the common circular waveguide. The first and second ports are connected to the third port in opposite positions via 90-degree bends (118, 120). In a coupling region a separating plate extends from a wall closing the common circular waveguide, wherein the separating plate is oriented perpendicular to the longitudinal axes of parts of the rectangular ports coupled to the common circular waveguide.

A cross-connect switch for fiber-optic communication networks employing a wavelength dispersive element, such as a grating, and a stack of regular (non-wavelength selective) cross bar switches using two-dimensional arrays of micromachined, electrically actuated, individually-tiltable, controlled deflection micromirrors for providing multiport switching capability for a plurality of wavelengths. Using a one-dimensional micromirror array, a fiber-optic based MEMS switched spectrometer that does not require mechanical motion of bulk components or large diode arrays can be constructed with readout capability for WDM network diagnosis or for general purpose spectroscopic applications.

The invention relates to the technical field of carbon-coated synthetic graphite negative electrode materials, in particular to a preparation method of a high-power carbon-coated synthetic graphite negative electrode material. The preparation method is characterized by comprising the following steps: crushing coal-measure green coke serving as a raw material A, so as to form a micro powder; crushing and grading asphalt serving a raw material B, so as to form a micro powder; performing modified heat treatment on the micro powder of the raw material A, and then performing normal temperature graphitization in a resistance type graphitization furnace; mixing and sieving obtained materials subjected to graphitization, so as to obtain a single particle graphitization product; uniformly mixing the single particle graphitization product and the micro powder of the raw material B, so as to perform coated modification; performing carbonizing treatment on materials subjected to coated modification, so as to solidify a coated layer; cooling the material to a room temperature, and mixing and sieving, so as to obtain a product. Compared with the prior art, the preparation method has the advantages that the electrode material has smaller reaction impedance, and the low-temperature performance and power characteristic of the material are enhanced; the cycling performance of the material is improved, meanwhile the graphitization cost is reduced, and the purpose of energy conservation is achieved.

Disclosed is an intermediate part forming a wadding cup to be placed in the case of a cartridge for separating the explosive charge and the shot. It includes a cylindrical sleeve of outer diameter suitable for being inserted slidingly into the case, the sleeve having a front portion the end of which is open, suitable for containing the shot, and a rear portion including a cylindrical wad flush with the end of the rear portion, the intermediate part being formed of at least 95% by weight of biodegradable or decomposable materials, such as cardboard and cork. Also disclosed is a biodegradable cartridge with cup and wadding, complying with environmental rules.

The invention discloses a component design and preparation method for a zinc-aluminum alloy pipe. The zinc-aluminum alloy pipe comprises, by weight, 36.00%-69.00% of zinc, 31.00%-64.00% of aluminum, 0.01%-1.00% of copper, 0.01%-1.00% of magnesium, 0.01%-1.0% of tin, 0.01%-1.00% of silver, 0.01%-2.00% of titanium, 0.01%-0.50% of boron, 0.01%-0.70% of cerium and 0.01%-0.20% of praseodymium, and the sum of the weight percentage is 100%. The obtained zinc-aluminum alloy pipe can be used for manufacturing a mold and a pipe fitting in a complex shape and used for manufacturing a delay element in the civil explosive industry according to the component and performance differences, so that an existing lead-antimony alloy pipe which is severe in environmental pollution and toxicity is replaced; and meanwhile, zinc-aluminum alloy is light in proportion and cheaper than a copper alloy material, the cost can be obviously reduced, and the zinc-aluminum alloy pipe can be widely used in metallurgy, mines, light industry, food, chemical industry, printing, mechanical equipment and other fields.

The invention discloses a vertical axis wind turbine airfoil design method under the condition of a large attack angle range. The method comprises the following steps: representing an airfoil profileby adopting a method of combining a class function and a B spline, and selecting an NACA0015 symmetric airfoil as an original airfoil; considering three groups of attack angle ranges, respectively establishing a wind turbine airfoil optimization mathematical model taking the maximum sum of tangential moment coefficients as an objective function, compiling a particle swarm optimization program, andcoupling RFOIL software to perform optimization design on the vertical axis wind turbine airfoil. According to the invention, the improvement of the tangential force of the airfoil profile under a large attack angle range is pursued, so that the aerodynamic performance of the whole HVAWT is improved. The novel HVAWT and the initial HVAWT aerodynamic performance are compared and analyzed, the airfoil profile more suitable for the HVAWT is obtained through optimization by optimizing three sets of different attack angle parameter ranges, the blade torque coefficient is integrally improved, and therefore the wind energy utilization rate of the HVAWT can be effectively increased.

The invention discloses an isolated type H-bridge drive device. An H-bridge is driven through the method that an isolation transformer and an opto-isolator are combined, an optocoupler is used for isolating drive signals of bridge arms of the H-bridge, voltages generated by the isolation transformer are used for providing work voltages for an isolated drive signal circuit, and meanwhile a voltage generating negative electrode of the isolation transformer is connected to a lower bridge public end HV-360V- of the H-bridge and isolated from the ground of a drive signal chip; in this way, drive signals can directly drive power MOSFET pipes of the upper bridge arm and the lower bridge arm in an H-bridge circuit, a circuit for raising drive voltages does not need to be added to a drive chip, the drive chip is wider in application range, and other performance and electrical characteristics can be added to the saved space. Compared with a special drive chip high in cost, the isolated type H-bridge drive device has the advantages of being low in cost, safe and reliable; the drive device does not need a bootstrap capacitor for boosting, and meanwhile the functions and electrical characteristics the same as those of a special IC can be achieved.