77results about How to "Avoid oversaturation" patented technology

A process (and apparatus for performing the process) for layer manufacturing a three-dimensional work piece comprising the steps of; feeding raw material in a solid state to a first predetermined location; exposing the raw material to an electron beam to liquefy the raw material; depositing the raw material onto a substrate as a molten pool deposit, the deposit having a forward edge region in an x-y plane with a forward edge region width and a trailing edge region in the x-y plane with a trailing edge region width, under at least one first processing condition; monitoring the molten pool deposit for at least one preselected condition using detecting of scatter from a scanning electron beam contemporaneously with the depositing step; solidifying the molten pool deposit; automatically altering the first processing condition to a different processing condition based upon information obtained from the comparing step; and repeating steps at one or more second locations for building up layer by layer, generally along a z-axis that is orthogonal to the x-y plane, a three-dimensional work piece.

A process (and apparatus for performing the process) for layer manufacturing a three-dimensional work piece comprising the steps of: feeding raw material in a solid state to a first predetermined location; exposing the raw material to an electron beam to liquefy the raw material; depositing the raw material onto a substrate as a molten pool deposit, the deposit having a forward edge region in an x-y plane with a forward edge region width and a trailing edge region in the x-y plane with a trailing edge region width, under at least one first processing condition; monitoring the molten pool deposit for at least one preselected condition using detecting of scatter from a scanning electron beam contemporaneously with the depositing step; solidifying the molten pool deposit; automatically altering the first processing condition to a different processing condition based upon information obtained from the comparing step; and repeating steps at one or more second locations for building up layer by layer, generally along a z-axis that is orthogonal to the x-y plane, a three-dimensional work piece.

A fullerene / nanotubes mixture is produced during a periodical pulsed auto-regulated action of the electric current arc-discharge in the multi-component hydrocarbon medium with limited fullerenes' solubility, besides, the action is continued until the medium dissolves C60. Higher fullerenes absorbed by the ultra-thin graphite particles are separated from C60 dissolved in the liquid medium by sedimentation, whereas the carbon nanotubes are separated from the ultra-thin graphite particles by treating with a boiling concentrated HN03 acid and by low speed centrifuging / acid mixture until the black sediment of the ultra-thin graphite particles is precipitated to the bottom. The periodically pulsed auto-regulated regime of the electric-current arc-discharge is performed by contact breaking an electric circuit due to lifting spherical contactors by gaseous products released during the action and by switching the circuit due to the contacts' going down under action of gravity.

The present invention discloses an apparatus for controlling an operation of a reciprocating compressor and a method therefor which can reduce errors in an operation of a stroke estimated value of the reciprocating compressor, by previously preventing over-saturation of a magnetic flux density generated in a coil of a motor. The apparatus for controlling the operation of the reciprocating compressor includes a magnetic flux saturation constant operation unit for operating a magnetic flux saturation constant of a motor of the reciprocating compressor on the basis of a stroke estimated value of the reciprocating compressor, a stroke reference value generation unit for generating an increased or decreased stroke reference value by increasing or decreasing a predetermined stroke reference value on the basis of the magnetic flux saturation constant, and a control unit for controlling a voltage applied to the motor of the reciprocating compressor on the basis of the generated stroke reference value.

A cryosurgery device for dispensing a liquid refrigerant from a container having a valve stem extending outwardly therefrom. The device includes an actuator adapted to seat on the valve stem of the container in order to depress the valve stem to release the refrigerant from the container. The actuator includes an inner passageway having opposed ends disposed therein, one of the ends of the passageway being in fluid communication with the valve stem. An applicator tube is mounted to the actuator at the other end of the inner passageway. A cap is disposed on the top of the container. The actuator is movably positioned on the cap and a shield is attached to the cap to completely receiving the applicator tube. Liquid refrigerant can only be dispensed when the actuator is positioned properly and the applicator tube is disposed within the shield means.

To detect air in a fluid delivery line of an infusion system, infusion fluid is pumped through a fluid delivery line adjacent to at least one sensor. A signal is transmitted and received using the at least one sensor into and from the fluid delivery line. The at least one sensor is operated, using at least one processor, at a modified frequency which is different than a resonant frequency of the at least one sensor to reduce an amplitude of an output of the signal transmitted from the at least one sensor to a level which is lower than a saturation level of the analog-to-digital converter to avoid over-saturating the analog-to-digital converter. The signal received by the at least one sensor is converted from analog to digital using an analog-to-digital converter. The at least one processor determines whether air is in the fluid delivery line based on the converted digital signal.

A plant growing assembly is configured to grow a plurality of plants in multiple directions above a ground surface. The assembly includes a growing container and a support structure for elevating the container above the ground surface. The container presents a generally hollow body to retain a plant-growing medium and the plurality of plants. The body extends along an axis to present opposite axial end margins and a radial peripheral wall. The wall defines a plurality of discrete plant-receiving ports extending therethrough, and disposed generally radially about the wall. A method of growing plants above ground in substantially opposite directions from one another is also disclosed.

A method for operating an ion mobility spectrometer comprises supplying an analyte substance into a reaction chamber of an ion mobility spectrometer having a closed internal gas circuit and at least one membrane inlet having an inner membrane chamber, changing at least one of flow resistances and gas paths in the closed internal gas circuit, and controlling at least one of a quantity and a concentration of analyte-containing gas flowing from the inner membrane chamber to the reaction chamber.

The present invention discloses an apparatus for controlling an operation of a reciprocating compressor and a method therefor which can reduce errors in an operation of a stroke estimated value of the reciprocating compressor, by previously preventing over-saturation of a magnetic flux density generated in a coil of a motor. The apparatus for controlling the operation of the reciprocating compressor includes a magnetic flux saturation constant operation unit for operating a magnetic flux saturation constant of a motor of the reciprocating compressor on the basis of a stroke estimated value of the reciprocating compressor, a stroke reference value generation unit for generating an increased or decreased stroke reference value by increasing or decreasing a predetermined stroke reference value on the basis of the magnetic flux saturation constant, and a control unit for controlling a voltage applied to the motor of the reciprocating compressor on the basis of the generated stroke reference value.

To detect air in a fluid delivery line of an infusion system, infusion fluid is pumped through a fluid delivery line adjacent to at least one sensor. A signal is transmitted and received using the at least one sensor into and from the fluid delivery line. The at least one sensor is operated, using at least one processor, at a modified frequency which is different than a resonant frequency of the at least one sensor to reduce an amplitude of an output of the signal transmitted from the at least one sensor to a level which is lower than a saturation level of the analog-to-digital converter to avoid over-saturating the analog-to-digital converter. The signal received by the at least one sensor is converted from analog to digital using an analog-to-digital converter. The at least one processor determines whether air is in the fluid delivery line based on the converted digital signal.

The disclosed embodiments relate to a method for controlling prefetching in a processor to prevent over-saturation of interfaces in the memory hierarchy of the processor. While the processor is executing, the method determines a bandwidth utilization of an interface from a cache in the processor to a lower level of the memory hierarchy. Next, the method selectively adjusts a prefetch-dropping high-water mark for occupancy of a miss buffer associated with the cache based on the determined bandwidth utilization, wherein the miss buffer stores entries for outstanding demand requests and prefetches that missed in the cache and are waiting for corresponding data to be returned from the lower level of the memory hierarchy, and wherein when the occupancy of the miss buffer exceeds the prefetch-dropping high-water mark, subsequent prefetches that cause a cache miss are dropped.

A solution is proposed that allows power savings via enhancement of pixel data to compensate for reducing backlight intensity levels. According to one embodiment, each pixel of a display is sorted according to the brightness (intensity) of the pixel. Regional pixel gains are calculated and applied on a per pixel basis so as not to exceed a quality threshold. The intensity of the backlight corresponding to each region may be decreased by an equivalent amount, thereby reducing (potentially significantly) the power consumed to operate the backlight while maintaining the color intensity in the image due to the applied pixel gains.

The present invention is a coated hydrogenation catalyst that includes a porous support material, an active metal component and a silica precursor, wherein the support material is impregnated with the active metal component and then contacted with the silica precursor. After impregnation, the support material is calcined to form a SiO2 layer. The active metal component can be one or more Group VIII metals, metal oxides, metal sulfides or metal carbides. The support material for the coated catalyst is kieselguhr, alumina, silica or silica-alumina. In a preferred embodiment, the active metal component is platinum, palladium, rhodium, rhenium or iridium and the catalyst includes a zeolite component. The coated catalyst is prepared by first impregnating the support material with the active metal component and then contacting the silica precursor to form an impregnated catalyst. The impregnated catalyst is then calcined to form the coated catalyst having a SiO2 layer. The impregnation with the active metal component and the incorporation of the silica precursor can be repeated two or more times to form a plurality of SiO2 layers on the coated catalyst.

A plant growing assembly is configured to grow a plurality of plants in multiple directions above a ground surface. The assembly includes a growing container and a support structure for elevating the container above the ground surface. The container presents a generally hollow body to retain a plant-growing medium and the plurality of plants. The body extends along an axis to present opposite axial end margins and a radial peripheral wall. The wall defines a plurality of discrete plant-receiving ports extending therethrough, and disposed generally radially about the wall. A method of growing plants above ground in substantially opposite directions from one another is also disclosed.

A method for operating a wind turbine (10). The wind turbine (10) is operated with variable rotational speed between predeterminable minimum and maximum rotational speeds. A characteristic variable (51) of an oscillation of the wind turbine (10) is detected. The wind turbine (10) includes a tower (14) and a rotor (13). An open-loop or closed-loop control device (36, 50) provides open-loop control or closed-loop control of the rotational speed of the rotor (13) between a minimum rotational speed and a maximum rotational speed during a power-supplying operation of the wind turbine. A sensor (40) detects a characteristic variable (51) of an oscillation of the wind turbine (10) and the minimum rotational speed is changed depending on the characteristic value (51) of the oscillation. The minimum rotational speed is altered depending on the characteristic variable (51) of the oscillation by the open-loop or closed-loop control device (36, 50).

The invention discloses a single-image defogging method based on dual-channel prior and side window guided filtering, and the method comprises the following steps: (1) respectively solving a dark channel image and a bright channel image of a foggy image, and respectively taking the first 0.1% of pixel points with the maximum gray values of the two images; (2) solving a self-adaptive threshold delta (0<delta<1) by utilizing the brightest pixel value and the darkest pixel value design function in the dark channel image and the bright channel image of the original fog image; (3) solving an atmospheric light value A by utilizing the distribution of pixels in the RGB three-dimensional space diagram decision image proposed by the literature [6]; (4) obtaining transmissivity according to dark channel prior; (5) combining side window filtering and guiding filtering to form side window guiding filtering; and (6) according to an atmospheric scattering model, substituting the atmospheric light value A and the transmissivity into an optical expression of a foggy day image imaging model to obtain a final restored scene.

Solution acrylic polymers suitable for dispersing drugs are particularly useful in transdermal drug delivery applications.

An aspect of the present invention proposes a solution to allow low-cost flat panel displays without light guides to maintain a high quality image display via enhancement of pixel data to account for non uniform brightness. According to one embodiment, each pixel of a display is mapped to the brightness (intensity) of illumination that reaches the pixel. Regional pixel gains are calculated and applied on a per pixel basis to compensate for the non-uniform brightness across the screen. According to such an embodiment, even low cost flat panel displays experiencing non-uniform brightness can be used to render high quality images.

The invention relates to the field of oil refining and discloses a method for producing clean diesel fuel. The method comprises the following steps that a reaction is conducted in a first hydrogenation reaction area after the high-sulfur-nitrogen poor-quality diesel fuel and reaction products in a second hydrogenation reaction area are mixed with hydrogen-containing substance flow,hydrogenation and refinement reaction products are obtained and then subjected to separation and fractional distillation, and refined diesel fuel cut fraction and heavy diesel fuel cut fraction are obtained; at least part of the heavy diesel fuel cut fraction and hydrogen containing substance flow are led into the second hydrogenation reaction area, and products in the second hydrogenation reaction area are led into the first hydrogenation reaction area; and the refined diesel fuel cut fraction and the rest of the heavy diesel fuel cut fraction are mixed to obtain the clean diesel fuel, wherein the sulfur content of the high-sulfur-nitrogen poor-quality diesel fuel is higher than 5000 [mu]g / g, the nitrogen content of the high-sulfur-nitrogen poor-quality diesel fuel is higher than 700 [mu]g / g, and the arene content of the high-sulfur-nitrogen poor-quality diesel fuel is higher than 50% by weight. According to the method for producing the clean diesel fuel through the high-sulfur-nitrogen poor-quality diesel fuel, conditions are moderate, operating is easy, cost is low, and the clean diesel fuel with the sulfur content, the nitrogen content and the arene content meeting the Euro V standard and the cetane number improved by 10 units or over can be produced.

This invention enables a sensitivity enhancement in the detection of molecular compounds. A mass spectrometry analyte support with nanotube anchors are used to concentrate MALDI samples prepared with water-insoluble matrix compounds on the anchor spot. A matrix solution mixed with analyte molecules is spotted onto a specialized MALDI plate using carbon nanotubes to selectively nucleate the analyte. The spot diameter of the target is usually several orders of magnitude larger than traditional supports, and led to lateral concentration for non-aqueous based matrices and produced a final dried matrix / analyte spot that was approximately the diameter of the laser spot at the point of investigation. The carbon nanotubes enhance nucleation on specific areas of a sample plate to concentrate analyte / matrix deposit during droplet evaporation, and demonstrate an increase in signal to noise ratio and an improved detection capability of low analyte concentrations compared to the standard MALDI preparation technique.

The invention relates to a color cast detection and image enhancement method for images after defogging. Brightness radiation estimation is performed on the images after defogging by utilizing a guiding filter with low complexity and the edge preservation characteristic so that color cast of the images after defogging is corrected and the images are enhanced. Firstly, color cast detection is performed on the images; then a gray world method is performed on the images exceeding the color cast threshold value; and an improved single-scale Retinex method is performed on the images. With application of the method, color cast detection and image enhancement of the images after defogging are realized.

A method for operating an ion mobility spectrometer comprises supplying an analyte substance into a reaction chamber of an ion mobility spectrometer having a closed internal gas circuit and at least one membrane inlet having an inner membrane chamber, changing at least one of flow resistances and gas paths in the closed internal gas circuit, and controlling at least one of a quantity and a concentration of analyte-containing gas flowing from the inner membrane chamber to the reaction chamber.

A method of operating a mass spectrometer comprising: detecting a first ion species using a first gain setting of a detector or a first emission current for a first mass-to-charge range; detecting a second ion species using a second gain setting of the detector or a second emission current for a second mass-to-charge range; and using the detected first and second ion species to calibrate the mass range of a mass analyzer of the mass spectrometer, to tune the resolution of the mass analyzer, or to tune an ion optic of the mass spectrometer.

The present invention provides a rotor structure, an asynchronous starting synchronization reluctance motor and a compressor. The rotor structure comprises a rotor body (10), the rotor body (10) is provided with holding grooves (11) and a magnetic barrier slit groove (13), one first magnetic flow channel (12), passing through a q axis, formed between each two adjacent holding grooves (11) is a main magnetic flow channel with a width D3, and the width D3 of the main magnetic flow channel is larger than these of the other two adjacent holding grooves (11). Therefore, the magnetic flow of the main magnetic flow channel is ensured to avoid supersaturation, effectively increase the difference of the magnetic flux between the d axis and the q axis, allow the motor having the rotor structure to generate a larger reluctance torque and increase the output torque and the efficiency of the motor so as to improve the performances of the motor.

A cleaning swab is for wet or dry use. The swab includes a handle defining a longitudinal axis. The handle is elongated and has a cleaning head end having a tip, and a grasping end. A cleaning head is mounted to the handle. The cleaning head is formed from a strip of material having an inner surface and an outer surface. The material is affixed to the handle at the inner surface, and extends along the handle, over the tip and along an opposite side of the handle. The head defines a loop at the handle tip spaced from the tip. The strip of material extends along the handle to define major cleaning surfaces and the loop defines an inner annular cleaning surface.

The invention discloses a low-cost high-power-density single-phase high-speed hybrid excitation permanent magnet motor and method. The motor comprises a stator and a rotor; armature grooves and excitation grooves are alternately arranged at intervals along the circumference; a set of armature windings are disposed in the armature grooves; a set of excitation windings are disposed in the excitationgrooves; the rotor comprises rotor teeth, rotor grooves are formed between the adjacent rotor teeth, and main air gaps are formed between the stator teeth and the rotor teeth; the iron core between the excitation groove where the excitation winding is located and the permanent magnet above the excitation groove is disconnected in the radial direction, additional air gaps are formed, and ferriteswhich are the same in the magnetizing direction and arranged in a short-long-short mode to form a pole are placed between the additional air gaps. Most of magnetic flux passes through the main air gaps by matching the length and the mounting angle of the ferrites under the same polarity, so that a magnetism gathering function is realized, and the performance and the power density of the motor areimproved.

The invention provides an urban rail transit station platform supersaturated passenger flow pre-control method and system. The method comprises the following steps: acquiring rail transit station hallhardware facility parameters, train information parameters and passenger flow service parameters; extracting passenger flow data in real time, carrying out platform supersaturation state pre-judgment, and if it is judged that the platform passenger flow is about to reach the supersaturation state, starting a signal device arranged on a corresponding station hall layer to control the passenger flow of the station hall layer; determining the minimum arrival rate of the passenger flow of the platform according to the acquired parameter information, determining the maximum release time needed forreleasing the remaining passenger flow capable of being contained in the platform, and setting the forbidding signal starting moment of the signal device; setting a corresponding release signal opening moment according to the acquired parameter information on the premise that the get-off passenger flow rate of each train does not exceed the passage capacity limit; and forming a timing scheme according to the set forbidding signal starting moment and the releasing signal starting moment, and controlling the operation of the signal device. Passenger flow congestion can be effectively reduced.