372results about How to "Large structure" patented technology

This disclosure demonstrates a new class of Ultra-Wide Band (UWB) AMC with very large fractional bandwidth (>100%) even at lower frequencies (<1 GHz). This new UWB AMC is enabled by recognizing that any AMC must be an antenna in order to accept the incident radiation into the circuit. Therefore, by using UWB antenna design features, one can make wide band AMCs. Additionally, by manipulation of the UWB AMC element design, a 1 / frequency dependence can be obtained for instantiating the benefits of a quarter wave reflection over a large UWB bandwidth with a single physical thickness.

The invention provides reinforced aerogel monoliths as well as reinforced composites thereof for a variety of uses. Compositions and methods of preparing the monoliths and composites are also provided. Application of these materials in transparent assemblies is also discuss.

A surgical instrument includes an elongated shaft having a distal portion and a proximal portion coupled to a housing. An inner shaft member extends at least partially through the elongated shaft and is selectively movable in a longitudinal direction. An end effector is supported by the distal portion of the elongated shaft. The end effector includes upper and lower jaw members pivotally coupled to the distal portion of the elongated shaft about a pivot axis and including a pair of laterally spaced flanges. The pairs of flanges of the jaw members are arranged in an offset configuration such that one flange of the upper jaw member is positioned on a laterally exterior side of a corresponding flange of the lower jaw member, and the other flange of the upper jaw member is positioned on a laterally interior side of the other flange of the lower jaw member.

Disclosed is an expandable transluminal sheath, for introduction into the body while in a first, small cross-sectional area configuration, and subsequent expansion of at least a part of the distal end of the sheath to a second, enlarged cross-sectional configuration. The sheath is configured for use in the upper vascular system and has utility in the introduction and removal of therapeutic or diagnostic microcatheters. The access route is through the femoral arteries or the iliac arteries to the cerebrovasculature. The distal end of the sheath is maintained in the first, low cross-sectional configuration during advancement to the cerebrovasculature. The distal end of the sheath is subsequently expanded using a radial dilatation device, which is removed prior to the introduction of microcatheters. The sheath can be inserted in a first, small cross-sectional configuration, be expanded diametrically to a second, larger cross-sectional configuration, and then be reduced to a diametrically smaller size for removal.

A mask for delivery of oxygen to a patient, the mask comprising a body having a peripheral portion, when in use to sit comfortably on a patient's face, a central portion, and bridge portions extending between the central portion and the peripheral portion and integral therewith, the central portion having an inner surface and an outer surface, the inner surface to be oriented towards the patient's face when the mask is in position and contoured so as to sit at a location spaced over the patient's nose and mouth, the inner surface of the central portion provided with a wall circumscribing a base, the wall and base being of generally concave configuration and circumscribing a centrally positioned oxygen delivery aperture extending through the central portion between the inner surface and the outer surface, the wall and base configured so as to act as an oxygen diffuser to direct the flow of oxygen generally towards the patient's nose and mouth when the mask is in use; and tabs on opposite sides of the peripheral portion for securing a flexible strap to extend behind the patient's head to hold the mask in position when in use; and means associated with the aperture and of the central portion releasably to receive and secure in position an oxygen delivery tube. In one embodiment, exhaled carbon dioxide may also be collected for measurement. The mask according to the present invention provides comfort, reliability and efficiency in oxygen delivery to patients.

Embodiments of the present invention are directed to apparatuses and methods of making a micromachined resonator gyroscope, e.g. a disc resonator gyro (DRG), including one or more of the following novel features. Embodiments of the invention may comprise a triple-wafer stack gyroscope with an all fused quartz (or all silicon) construction for an electrical baseplate, resonator and vacuum cap. This can yield superior thermal stability over prior art designs. A typical resonator embodiment may include a centrally anchored disc with high aspect-ratio in-plane electrostatic drive and sense electrodes to create large capacitance. A silicon sacrificial layer may be employed for attaching a quartz resonator wafer to a quartz handle wafer for high aspect-ratio etching. In addition, embodiments of the invention may comprise a low thermal stress, wafer-level vacuum packaged gyroscope with on-chip getter. An ultra-thin conductive layer deposited on the quartz resonator may also be utilized for high Q.

An electrosurgical instrument includes a housing including an elongated shaft. A stationary actuation member is axially disposed within the elongated shaft and includes a cam pin. An actuating mechanism is operably coupled to the elongated shaft and is moveable relative to the housing to selectively cause movement of the elongated shaft. An end effector includes a pair of opposing first and second jaw members operably coupled about a common pivot. One or both of the jaw members includes a camming slot configured to engage the cam pin. Each jaw member includes an electrically conductive tissue sealing surface adapted to connect to a source of electrosurgical energy. A knife blade is supported in the elongated shaft and moveable in a longitudinal direction to cut tissue disposed between the jaw members. A switch is configured to be engaged by the actuating mechanism to initiate delivery of electrosurgical energy to tissue.

Structures based upon periodic cellular materials that provide a potential for defeating combinations of both air blast loading and ballistic attack either sequentially or simultaneously, or combination of both. The cellular structures may also be configured to meet the stiffness and strength support requirements of particular vehicle or other applications, systems or structures. The armor is therefore potentially able to support normal service loads and defeat blast and ballistic threats when necessary. The structure provides for using efficient load support capabilities of the material (without a high armor protection level) in low threat conditions, as well as the ability to modify the system to increase its level protection to a desired or required level. This would reduce the weight of the protection system in normal (low threat) conditions which reduces vehicle wear and tear, as well as cost savings in fabrication of applicable structures or systems.

An electrosurgical instrument includes a housing including an elongated shaft. A stationary actuation member is axially disposed within the elongated shaft and includes a cam pin. An actuating mechanism is operably coupled to the elongated shaft and is moveable relative to the housing to selectively cause movement of the elongated shaft. An end effector includes a pair of opposing first and second jaw members operably coupled about a common pivot. One or both of the jaw members includes a camming slot configured to engage the cam pin. Each jaw member includes an electrically conductive tissue sealing surface adapted to connect to a source of electrosurgical energy. A knife blade is supported in the elongated shaft and moveable in a longitudinal direction to cut tissue disposed between the jaw members. A wire retention unit is supported within the housing and includes a plurality of wire clasps and a plurality of guide ribs configured to define at least one wire path.

Provided is a flexible heat sink article comprising a base comprising a polymer and a plurality of polymeric protrusions extending away from the base, each protrusion having a major dimension and a minor dimension. The base comprises thermally conductive particles, and the protrusions comprise non-spherical thermally conductive particles substantially aligned in the direction of the major dimension within the protrusions. A thermal interface material may be provided contiguous with the base. Also provided is a flexible heat sink article comprising a base comprising a polymer and having a first surface and a second surface, a plurality of polymeric protrusions extending away from the first surface of the base, each protrusion having a major and a minor dimension, and a metallic layer contiguous with the second surface of the base, wherein the base and the protrusions comprise thermally conductive particles. Also provided is a method of making a flexible heat sink.

A catheter having an elongate drainage tube with a proximal end and a distal end, is adapted to extend through a body conduit and into a body cavity. An anchor disposed the distal end of the tube is disposed in the body cavity and is adapted to be moved from an insertion position to a withdrawal position. The anchor in the insertion position has a low profile when the tube is moved distally and in the withdrawal position has a low profile when the tube is moved proximally. The first end of the anchor is attached to the tube, and a tension member is provided to extend distally of the tube to releasably hold the second end of the anchor in a fixed relationship with the tube. In an associated method, this tension member is severed to release the second end of the anchor from the tube and permit withdrawal of the tube and the anchor in a low-profile state.

A connection mechanism and manufacturing method for a surgical instrument includes an inner shaft member that extends at least partially through an elongated shaft member of the instrument and defines proximal and distal ends and is selectively movable in a longitudinal direction with respect to the elongated shaft member and includes at least one aperture that extends partially along the longitudinal direction and disposed distally from the proximal end. The inner shaft member enables a drive collar member to slide on the inner shaft member and reciprocate along the longitudinal direction. A drive collar stop member slides on the inner shaft member and moves along the longitudinal direction. The drive collar stop member then moves in a direction relative to the longitudinal axis to engage the aperture and limit further longitudinal motion of the drive collar member. An inner shaft stop member limits movement of the inner shaft.

Disclosed is a digital neural processor comprising at least one neural processing element. The neural processing elements including at least one simulated dendrite and a simulated axon. Each of the simulated dendrites may include: a dendrite input capable of receiving at least one dendrite input signal and a dendrite signal propagation function capable of calculating a dendrite output signal in discrete time steps from each dendrite input signal. The signal propagation function may further include a delay parameter; a duration parameter; and an amplitude parameter. The simulated axon includes an axon input capable of receiving dendrite output signals, an axon function, capable of calculating an axon output signal from dendrite output signal(s) and an axon output capable of outputting the axon output signal.

The invention relates to a preparation method of porous nano fiber. The preparation method comprises the steps of: dissolving polymer for electrostatic spinning in a solvent to obtain a fiber-forming polymer solution; then adding a dispersion insoluble in the solvent, adding a surfactant, and stirring to obtain an emulsion; and carrying out electrostatic spinning on the emulsion, and volatilizing the dispersion during the spinning process or washing off the dispersion in the spinning process and the subsequent washing process to obtain the porous nano fiber. According to the invention, the preparation method is simple to operate, low in cost, and is suitable for mass production; the pore forming effect is good; and the obtained porous nano fiber has larger specific area and an irregular pore structure.

The present invention provides a semiconductor light-emitting element comprising an electrode part excellent in ohmic contact and capable of emitting light from the whole surface. An electrode layer placed on the light-extraction side comprises a metal part and plural openings. The metal part is so continuous that any pair of point-positions in the part is continuously connected without breaks, and the metal part in 95% or more of the whole area continues linearly without breaks by the openings in a straight distance of not more than ⅓ of the wavelength of light emitted from an active layer. The average opening diameter is of 10 nm to ⅓ of the wavelength of emitted light. The electrode layer has a thickness of 10 nm to 200 nm, and is in good ohmic contact with a semiconductor layer.

A dispensing closure for a container is disclosed. The dispensing closure includes a closure body including an upper wall having a dispensing orifice. The closure body further includes an upper peripheral skirt depending from the upper wall, a closure deck depending from the upper peripheral skirt, and a lower peripheral skirt depending from the closure deck. The lower peripheral skirt has a diameter larger than the upper peripheral skirt. The lower peripheral skirt is configured to be mounted on a container. A cap having an upper wall and a wall flange depends from the upper wall. A hinge body is also included. A first living hinge joins a first end of the hinge body to the lower peripheral skirt and is hingeably movable from an open position to a closed position in facing mating relation with the upper peripheral skirt. The hinge body and the upper peripheral skirt include interfitting mating formations to secure the hinge body in facing mating relation with the upper peripheral skirt. A second living hinge joins a second end of the hinge body to the sealing cap. The sealing cap is hingeably movable from an open position to a closed position overlying the upper wall of the closure body. A latch bump is also included and may be located on either the closure deck adjacent to the hinge or on the hinge adjacent to the closure deck. A latch bead is formed on the upper wall of the cap.

A highly moisture-resistant liquid crystal display apparatus which is capable of suppressing display deterioration due to occurrence of image retention without impairing properties including gap controllability and alignment stability maintenance, and a manufacturing method thereof, are provided. The liquid crystal display apparatus includes: a first sealing member 15 arranged at an outer periphery of a liquid crystal layer 17 sandwiched between a pair of substrates 11 and 12; and a second sealing member 16 arranged at an outer periphery of the first sealing member 15 in contact with the pair of substrates 11 and 12. The second sealing member 16 is formed from an alkylsiloxane compound as a main ingredient which is formed into an inorganic film by irradiation with an ultraviolet radiation. The alkylsiloxane compound is a di-alkylsiloxane compound or di-methyl-siloxane compound.

The present invention encompasses isolated nucleic acids containing transcriptional units which encode a signal sequence of one flavivirus and an immunogenic flavivirus antigen of a second flavivirus. The invention further encompasses a nucleic acid and protein vaccine and the use of the vaccine to immunize a subject against flavivirus infection. The invention also provides antigens encoded by nucleic acids of the invention, antibodies elicited in response to the antigens and use of the antigens and / or antibodies in detecting flavivirus or diagnosing flavivirus infection.

A method of forming an array of floating gate memory cells, and an array formed thereby, wherein each memory cell includes an electrical conductive floating gate formed in a trench in a semiconductor substrate, and an electrical conductive control gate having a portion disposed over and insulated from the floating gate. An electrical conductive tunneling gate is disposed over and insulated from the control gate by an insulating layer to form a tri-layer structure permitting both electron and hole charges tunneling through at similar tunneling rate. Spaced apart source and drain regions are formed with the source region disposed adjacent to and insulated from a lower portion of the floating gate, and with the drain region disposed adjacent to and insulated from an upper portion of the floating gate with a channel region formed therebetween and along a sidewall of the trench.

The invention discloses a preparation method of porous graphene. The method comprises the steps of: (1) stripping graphite oxide in a water / ethanol mixed solution with pH of 9-10, adding a chemical foaming agent and mixing them uniformly, carrying out filtering and drying to obtain a solid mixture; (2) placing the mixture in a reducing atmosphere, and performing heating expansion reduction to obtain expanded graphene; (3) blending the expanded graphene with strong base, and conducting high temperature activation; and (4) washing the product with hydrochloric acid and deionized water, and performing drying so as to obtain porous grapheme. The porous graphene prepared by the method involved in the invention has a specific surface area up to 2075m<2> / g, a pore volume up to 1.8cm<3> / g, and an average pore size of 1-7nm. As a supercapacitor electrode material, the specific capacitance can reach 155F / g under a current density of 1Ag<-1>. As a porous graphene electrode, the specific capacitance can reach 84.4% along with the increase of current density from 0.2Ag<-1> to 20Ag<-1>. The porous graphene has high specific capacitance and cycle stability. The preparation method disclosed in the invention has the advantages of simple process, low cost, and easy scale production.

The present invention is directed to a reinforced panel that includes a face sheet having an interior side and an exterior side, a plurality of integral and intersecting ribs having distal ends and projecting from the interior side of the face sheet to form contiguous cells, and a reinforcing member positioned in a channel and secured thereto for increasing bending resistance of the panel.

The present invention provides a semiconductor light-emitting element comprising an electrode part excellent in ohmic contact and capable of emitting light from the whole surface. An electrode layer placed on the light-extraction side comprises a metal part and plural openings. The metal part is so continuous that any pair of point-positions in the part is continuously connected without breaks, and the metal part in 95% or more of the whole area continues linearly without breaks by the openings in a straight distance of not more than ⅓ of the wavelength of light emitted from an active layer. The average opening diameter is of 10 nm to ⅓ of the wavelength of emitted light. The electrode layer has a thickness of 10 nm to 200 nm, and is in good ohmic contact with a semiconductor layer.

A mechanism for constraining a product package as it is conveyed through a microwave applicator. In one preferred embodiment, the conveyor is provided by a pair of parallel guide belts arranged to travel through a microwave applicator. The guide belts have a series of slots or other guide elements formed therein. The guide elements engage edges of the product packages. In one arrangement, the pair of belts are disposed on either side of a series of packages, and thus constrain the location of the packages in three dimensions.

The invention discloses a preparation method for gold-coated zinc oxide flower-like microspheres. The preparation method comprises the following steps: (1) weighing Zn(CH3COOH)2.2H2O powder, trisodium citrate dihydrate powder and hexamethylenetetramine and dissolving in 100 ml of de-ionized water, wherein a molar ratio of Zn(CH3COOH)2.2H2O powder to trisodium citrate dihydrate powder to hexamethylenetetramine is 10 to 1 to 10; (2) putting a mixed solution into a serum bottle, reacting for 3-5 hours, taking out the serum bottle and cooling at a normal temperature; (3) performing centrifuging and cleaning on obtained precipitates and drying a product at 50-70 DEG C for 12 hours; (4) annealing at 400 DEG C for 30 minutes to obtain flower-like ZnO powder; (5) adding the ZnO powder into the de-ionized water, adding HAuCl4.4H2O, adding trisodium citrate dihydrate, and reacting; (6) performing centrifugation and cleaning on obtained precipitates to prepare the gold-coated zinc oxide flower-like microspheres. The gold-coated zinc oxide flower-like microspheres are good in gas-sensitive sensor performance and photocatalytic performance.

The invention provides a diabetic retinopathy grade classification method based on deep learning. The diabetic retinopathy grade classification method comprises the steps of: constructing a sample library; removing backgrounds and noise of ophthalmoscope photographs in the sample library; normalizing the images of different brightness and different intensity to the same range by adopting a local mean value subtracting method; adopting random stretching and rotating methods for different samples for data augmentation, and constructing a training set and a test set; training an initial deep learning network model by establishing an input portion architecture, a multi-branch feature transformation portion architecture and an output portion architecture separately; and inputting samples to betested into the trained initial deep learning network model for diabetic retinopathy grade classification. Compared with the traditional processing method, the diabetic retinopathy grade classification method gets rid of the dependence on prior knowledge, and has good generalization ability; and by adopting the designed multiple grades, a small-sized convolution kernel can be used for extracting very tiny lesion features, thereby making the classification results more reliable.

The invention discloses a multi-piece magnetorheological fluid electromagnetic clutch which is in a multi-piece structure. A plurality of gaps between drive and driven friction plates are filled with magnetorheological fluid serving as medium, a plurality of magnetorheological fluid operating ring surfaces are formed, magnetic field intensity of the gaps is high, distribution of the gaps is reasonable, high torque can be transmitted, high transmission power can be controlled with low excitation current, automatic control is easy to implement, and engaging and disengaging can be stabilized. Input and output shafts, both provided with end bearings, and a housing form a whole installed inside a frame. The multi-piece magnetorheological fluid electromagnetic clutch is compact in structure, high in rigidity, convenient to mount and maintain, simple in structure, high in reliability, stable in transmission, and applicable to various small- and medium-sized automatic devices and servo drivers.

The present invention relates to a pet game assembly, comprising at least two pet game pieces, each having a body, wherein the body of one of said pet game pieces comprises at least two sections and the body of the other of said pet game pieces comprises at least one section, each of said sections having an interface surface, and wherein at least one of said pet game pieces comprises at least one recess in one section, said recess being suitable for holding a small object, characterized in at least one section of at least one of said pet game pieces having an interaction portion arranged so that said pet game piece can be arranged onto the other pet game piece.

The invention discloses an automatic loading device applicable to bagged materials. The automatic loading device comprises a material conveying unit, a material turning unit and a control terminal, wherein the material turning unit comprises a conveying section and a swerving power mechanism arranged at one end of the conveying section to enable the conveying section to deflect in a preset direction by a preset angle; the control terminal is connected with the material conveying unit and the material turning unit in a communication manner; and the conveying section comprises at least one set of conveyor belts which can carry out conveying by a preset distance in the preset direction, and the material turning unit is further connected with the material conveying unit through a support assembly. The automatic loading device applicable to the bagged materials solves the problems that the loading efficiency is low, an existing loading device cannot adapt to various transport cart types, the manual uncontrollable factors are too large, the labor force amount is large and the dust pollution is serious and other problems; and the automatic loading device is also applicable to loading of other bagged materials, and has wide market prospects and good economic and social benefits.