57results about How to "Dispersion limited" patented technology

The present invention provides matrixes doped with semiconductor nanocrystals. In certain embodiments, the semiconductor nanocrystals have a size and composition such that they absorb or emit light at particular wavelengths. The nanocrystals can comprise ligands that allow for mixing with various matrix materials, including polymers, such that a minimal portion of light is scattered by the matrixes. The matrixes of the present invention can also be utilized in refractive index matching applications. In other embodiments, semiconductor nanocrystals are embedded within matrixes to form a nanocrystal density gradient, thereby creating an effective refractive index gradient. The matrixes of the present invention can also be used as filters and antireflective coatings on optical devices and as down-converting layers. The present invention also provides processes for producing matrixes comprising semiconductor nanocrystals.

Matrixes doped with semiconductor nanocrystals are provided. In certain embodiments, the semiconductor nanocrystals have a size and composition such that they absorb or emit light at particular wavelengths. The nanocrystals can comprise ligands that allow for mixing with various matrix materials, including polymers, such that a minimal portion of light is scattered by the matrixes. The matrixes of the present invention can also be utilized in refractive index matching applications. In other embodiments, semiconductor nanocrystals are embedded within matrixes to form a nanocrystal density gradient, thereby creating an effective refractive index gradient. The matrixes of the present invention can also be used as filters and antireflective coatings on optical devices and as down-converting layers. Processes for producing matrixes comprising semiconductor nanocrystals are also provided. Nanostructures having high quantum efficiency, small size, and / or a narrow size distribution are also described, as are methods of producing indium phosphide nanostructures and core-shell nanostructures with Group II-VI shells.

The present invention is an air purifier including an ionizing assembly that operates to charge particulate material in an air flow passing through the purifier. The charged particulate material is attracted to and retained by a filter element disposed downstream of the ionization assembly and having an electrical charge opposite to the charged particulate material. The purified air passing through the filter is directed out of the device, optionally in conjunction with a fragrance that is added to the purified air flow. The ionizing assembly is formed with a ground member disposed adjacent the ionizing member to keep the electrons generated by the ionizing assembly within the purifier, and thus prevent static discharges from occurring outside of the purifier. The air flow is directed by a fan through the purifier in an angular and substantially laminar manner, such that the efficiency of the purifier is increased.

The present invention is an air purifier including an ionizing assembly that operates to charge particulate material in an air flow passing through the purifier. The charged particulate material is attracted to and retained by a filter element disposed downstream of the ionization assembly and having an electrical charge opposite to the charged particulate material. The purified air passing through the filter is directed out of the device, optionally in conjunction with a fragrance that is added to the purified air flow. The ionizing assembly is formed with a ground member disposed adjacent the ionizing member to keep the electrons generated by the ionizing assembly within the purifier, and thus prevent static discharges from occurring outside of the purifier. The air flow is directed by a fan through the purifier in an angular and substantially laminar manner, such that the efficiency of the purifier is increased.

A process for the enzymatic hydrolysis of cellulose to produce a hydrolysis product from a pre-treated cellulosic feedstock is provided. The process comprises introducing an aqueous slurry of the pre-treated cellulosic feedstock at the bottom of a hydrolysis reactor. Axial dispersion in the reactor is limited by avoiding mixing and maintaining an average slurry flow velocity of about 0.1 to about 20 feet per hour, such that the undissolved solids flow upward at a rate slower than that of the liquid. Cellulase enzymes are added to the aqueous slurry before or during the step of introducing. An aqueous stream comprising hydrolysis product and unhydrolyzed solids is removed from the hydrolysis reactor. Also provided are enzyme compositions which comprise cellulase enzymes and flocculents for use in the process. In addition, a kit comprising cellulase enzymes and flocculent is provided.

Disclosed are dust suppressant and aggregate stabilization compositions. In accordance with the subject disclosure, hemicellulose is used as a dust suppressant and / or as a stabilization composition for aggregates such as a road bed or soil field. Other ingredients may be used in a composition in conjunction with hemicellulose. For instance, a lignin compound may be used to enhance dust suppression and / or aggregate stabilization. A surfactant may be used to decrease the viscosity of the composition. A crosslinking agent may be used to enhance the water resistance of the composition. A chloride salt may be added to increase the hygroscopicity of the composition.

A toothpaste dispensing toothbrush is provided that includes a main body that contains a bladder therein that serves to contain a volume of toothpaste. A metered dosing pump is included that controls the flow of toothpaste from the fluid storage region and through a conduit that exits adjacent the bristles of the toothbrush head. Each operation of the metered dosing pump dispenses a measured and controlled amount of toothpaste into the bristles of the toothbrush. In addition to providing a flow of toothpaste, the rear side of the toothbrush may also include an additional “flavor burst” pack module to deliver an additional flavoring or another material, such as fluoride, to the flow of toothpaste.

A photovoltaic cell module, a photovoltaic array including at least two modules, and a method of forming the module are provided. The module includes a first outermost layer and a photovoltaic cell disposed on the first outermost layer. The module also includes a second outermost layer disposed on the photovoltaic cell and sandwiching the photovoltaic cell between the second outermost layer and the first outermost layer. The method of forming the module includes the steps of disposing the photovoltaic cell on the first outermost layer, disposing a silicone composition on the photovoltaic cell, and compressing the first outermost layer, the photovoltaic cell, and the second layer to form the photovoltaic cell module.

A device for applying a cosmetic product to the human body, constituted by at least one first column, which is arranged in an open space and is provided with a plurality of nozzles whose height can be adjusted for spraying a beneficial or cosmetic product that has been electrically precharged. The device further comprises a stand for the user, which is connected electrically to the ground at the post-positioning regions.

An optical transmitter transmits an OTDM signal light on which a spectrum component of a predetermined frequency is superimposed into an optical transmission line. A photodetector in an optical receiver converts the OTDM signal light output from the optical transmission line into an electrical signal. An electric bandpass filter extracts a component having the predetermined frequency out of the output from the photodetector. An RF power monitor measures power of the predetermined frequency component out of the output from the filter. A controller controls first an amount of dispersion compensation of a chromatic dispersion compensator so that the power of the predetermined frequency component becomes lower, and thereafter a dispersion slope of the chromatic dispersion compensator so that the power of the predetermined frequency component becomes lower.

The invention relates to a chromatography device comprising:a column (12) intended to house, between its two ends (16a, 16b) a chromatographic bed (14) and a fluid to be chromatographed, a fluid layer (48) being defined between a surface of the bed (14) and one (16a) of the ends of the column (12);a piston (36) sliding in the column (12), the piston (36) being one of the ends (16a, 16b) of the column (12);at least a first probe (45, 46) for detecting the surface of the bed (14), the probe (45, 46) being mounted on the end (16a) of the column (12) defining the layer (48); andmeans (52) for adjusting the position of the piston (36) according to the detection of the surface of the bed (14) by the probe (45, 46).The invention also relates to processes for separating at least two compounds of a fluid to be chromatographed and to methods of adjusting the position of the piston with respect to the surface of the chromatographic bed using the chromatography device.The invention has the advantage of allowing effective separation of the compounds of the fluid to be chromatographed while ensuring that the bed is protected.

A cleaning device includes an integral fluid dispenser therein that serves to dispense a fluid into the scrubbing pad of the device to improve the cleaning effectiveness of the device. The device includes a main body with a cleaning pad attached to one side thereof, an internal motorized assembly for rotating the cleaning pad upon depressing a button provided on a side of the main body and a fluid storage region that contains a cleaning fluid. A metered dosing pump is used to dispense a measured amount of fluid from the fluid storage region to cleaning pad upon actuation by the user. Further, the dispensing action and the rotation of the pad may be controlled by the same button or by separate buttons.

A system and method for increasing spectral efficiency, capacity and / or extending dispersion-limited reach in a communication link employs narrow filtering of a baseband signal to reduce the original bandwidth to a substantially smaller bandwidth for transmission across a transmission medium such as an optical fiber. By restricting the bandwidth, the rate of spreading is reduced significantly. The receiver at the other end of the transmission medium includes an equalizer for returning the received signal to its original bandwidth for retrieval of information contained in the signal.

A cleaning device is provided that includes an integral fluid dispenser therein that serves to dispense a fluid into the scrubbing pad of the device to improve the cleaning effectiveness of the device. The device includes a main body with a cleaning pad attached to one side thereof, an internal motorized assembly for rotating the cleaning pad upon depressing a button provided on a side of the main body and a fluid storage region that contains a cleaning fluid. A metered dosing pump is used to dispense a measured amount of fluid from the fluid storage region to cleaning pad upon actuation by the user. Further, the dispensing action and the rotation of the pad may be controlled by the same button or by separate buttons.

A potential of a data signal line S during a scanning period is charged to a substantially intermediate potential of a data signal at a corresponding frame. Thus, extremely large dispersion does not occur in a potential of each pixel capacitor with respect to a potential of the data signal line S, so that it is possible to restrict dispersion of a leak current flowing via an active element of each pixel. Thus, potential variation of a pixel PIX is reduced, so that it is possible to improve display quality during a non-scanning period. That is, in an active-matrix-type liquid crystal display, when a frame frequency is reduced by setting the non-scanning period to be sufficiently larger than a scanning period while a standby image is being displayed so as to realize low power consumption, the display quality is improved.

A grinding method comprises steps of simultaneously grinding plural grinding portions of a workpiece by plural grinding wheels T1, T2 moved individually each other, and terminating said grinding by a predetermined grinding wheel T1 prior to a termination of said grinding by the other grinding wheel T2. Whereby, a content of the grinding by each grinding wheel T1, T2 can be same. A grinding condition in each grinding by each grinding wheel T1, T2 can be changed in accordance with a measuring result of the grinding portion in the grinding.

A damper device having a casing with a cylindrical inner circumferential surface, a shaft body located in the cylindrical space of the casing and supported in a freely turnable manner, a cover which seals the casing, and viscous fluid stored in a sealed space formed between the shaft body and the casing. The casing is provided with a first engagement part and a second engagement part which engage with the cover, and the cover is welded with the first engagement part by ultrasonic welding and positioned by the second engagement part which is used as a positioning part in an axial direction for the cover.

One aspect of the present invention is directed to a solid chemical tablet in a shape comprising an elongated cylindrical side surface and an elongated flat side surface or an elongated concave cut side surface. Another aspect of the present invention is directed to a solid chemical tablet comprising a blend of hydrated calcium hypochlorite with magnesium sulfate heptahydrate. This invention further relates to a solid chemical tablet comprising a blend of solid calcium hypochlorite, and one or more solid alkali metal phosphate.

The invention relates to a powder in tube type method of manufacturing an HTc superconductor multifilament conductor having a matrix of compatible silver alloy and in which, during preparation of the multifilament billet, the number of segments per layer is organized so that, in cross-section, the segment layers viewed as a whole have the general shape of a converging-diverging nozzle, the throat of the converging-diverging nozzle shape being substantially contained in said superposition midplane; and in which, during the mechanical treatment of said multifilament billet preceding the synthesis heat treatment, a rolling force is applied in a direction perpendicular to the superposition midplane, and at least one of the side edges of the rolled billet is cut off perpendicularly to the superposition midplane, thereby revealing the matrix of compatible silver alloy.

A forensic light source which comprises a flexible liquid light guide receiving light from a light source and transmitting it to a selected interference filter which tilts with respect to the light source is disclosed. The filter is mounted for rotation with respect to the output of the light guide. The light exiting the filter is passed through a mixing member made of a randomized fiber optic bundle, that is positioned to receive the output of the filter. The mixing member defines multiple paths for light between the input face and the output face which are configured to disperse light from one mixing member input face region to a plurality of mixing member output face regions.

Disclosed are dust suppressant and aggregate stabilization compositions. In accordance with the subject disclosure, hemicellulose is used as a dust suppressant and / or as a stabilization composition for aggregates such as a road bed or soil field. Other ingredients may be used in a composition in conjunction with hemicellulose. For instance, a lignin compound may be used to enhance dust suppression and / or aggregate stabilization. A surfactant may be used to decrease the viscosity of the composition. A crosslinking agent may be used to enhance the water resistance of the composition. A chloride salt may be added to increase the hygroscopicity of the composition.

In a semiconductor storage device, a gate insulating film and a gate electrode are laid on a first conductivity type semiconductor substrate, and charge holding portions are formed on both sides of the gate electrode. Second conductivity type first and second diffusion layer regions are formed in regions of the semiconductor substrate corresponding to the charge holding portions. The charge holding portions are each structured so as to change, in accordance with an electric charge amount held in the charge holding portions, a current amount flowing from one of the second conductivity type diffusion layer regions to the other of the diffusion layer regions through a channel region when voltage is applied to the gate electrode. Part of each charge holding portion is present below an interface of the gate insulating film and the channel region.

A pattern forming method is provided. The pattern forming method includes a first step of forming a resist pattern including a lactone group-containing skeleton above an etched layer provided on a substrate; a second step of performing plasma processing using a hydrogen-containing gas to lower a glass transition temperature or a softening point of the resist pattern; and a third step of transferring the resist pattern after the plasma processing to the etched layer by etching, and forming the pattern of the etched layer.

A MEMS / NEMS device having an adjustable frequency response comprises an array of electrostatically actuated resonators, an electrostatic actuation circuit, electrical detection means, and means adjusting the frequency response of the resonators. The device comprises resonators having a movable portion, electrically connected in series between a first biasing potential VB and a second biasing potential VB2, each resonator biased to a potential Vi between VB and VB2, depending on position in the series. The electrostatic actuation circuit comprises, for each resonator, an actuation electrode facing the movable portion, all electrodes being connected in parallel to a common control potential VIN, the actuation voltage of each resonator being equal to VIN−Vi. The detection means comprises a detection output common to all resonators, the output being connected to an output potential Vout. The means for adjusting the frequency response varies the common control potential and / or at least one of the biasing potentials.

A damper device having a casing with a cylindrical inner circumferential surface, a shaft body located in the cylindrical space of the casing and supported in a freely turnable manner, a cover which seals the casing, and viscous fluid stored in a sealed space formed between the shaft body and the casing. The casing is provided with a first engagement part and a second engagement part which engage with the cover, and the cover is welded with the first engagement part by ultrasonic welding and positioned by the second engagement part which is used as a positioning part in an axial direction for the cover.

A device for occlusion of a body lumen comprises an implantable occlusion apparatus (3) operably attached to an elongated catheter member (4) configured for transluminal delivery and deployment of the occlusion apparatus in the body lumen. The occlusion apparatus comprises a radially expansible element (5) detachably attached to the elongated catheter member, and adjustable between a contracted orientation suitable for 10 transluminal delivery and a deployed orientation configured to occlude the body lumen, an energy delivery element (6, 14, 21) configured to deliver energy to surrounding tissue to heat the tissue, and a sensor (7) configured to detect a parameter of the wall of the body lumen. The energy delivery element (6, 14, 21) and sensor (7) are axially movable independently of the radially expansible element whereby, in use, the energy delivery 15 element and sensor can be transluminally retracted leaving the radially expansible element in-situ occluding the body lumen.

In a semiconductor storage device, a gate insulating film (12) and a gate electrode (13) are laid on a first conductivity type semiconductor substrate (11), and charge holding portions (10A, 10B) are formed on both sides of the gate electrode (13). Second conductivity type first and second diffusion layer regions (17, 18) are formed in regions of the semiconductor substrate (11) corresponding to the charge holding portions (10A, 10B). The charge holding portions (10A, 10B) are each structured so as to change, in accordance with an electric charge amount held in the charge holding portions, a current amount flowing from one of the second conductivity type diffusion layer regions (17, 18) to the other of the diffusion layer regions through a channel region when voltage is applied to the gate electrode (13). Part of each charge holding portion (10A, 10B) is present below an interface of the gate insulating film (12) and the channel region.