141results about How to "Uniform exposure" patented technology

An apparatus is disclosed for the micro-organism surface sterilization of foods using, a "germicidal" such as light waves (e.g., ultraviolet), and in some cases in combination with (or replaced by) one or more of sound waves and ozone. The surface sterilizer apparatus may include a plurality of germicidal (e.g., ultraviolet) emitters for surface sterilization of foods that are, e.g., rotated in a drum or rotated via a screw auger. Assemblies of emitters for the germicidal may be constructed to be watertight (i.e., withstand a high pressure, heated water spray), and movable relative to the drum or screw conveyor for easy cleaning and maintenance. The apparatus may also include a controller (e.g., programmable logic controller) for controlling the sterilization process so that the apparatus does not endanger personnel nearby, and so that the food is properly sterilized. The controller may vary the amount of germicidal used, the rate that food traverses the apparatus, the inclination of the apparatus, and terminate sterilization processing when an unsafe condition is detected. The apparatus may be used in-line with other food processing equipment for the real-time sterilization of food. The controller may also communicate with food processing components upstream of the apparatus for controlling the flow of food to the surface sterilizer

A dual-energy x-ray imaging system searches a moving automobile for concealed objects. Dual energy operation is achieved by operating an x-ray source at a constant potential of 100 KV to 150 KV, and alternately switching between two beam filters. The first filter is an atomic element having a high k-edge energy, such as platinum, gold, mercury, thallium, lead, bismuth, and thorium, thereby providing a low-energy spectrum. The second filter provides a high-energy spectrum through beam hardening. The low and high energy beams passing through the automobile are received by an x-ray detector. These detected signals are processed by a digital computer to create a steel suppressed image through logarithmic subtraction. The intensity of the x-ray beam is adjusted as the reciprocal of the measured automobile speed, thereby achieving a consistent radiation level regardless of the automobile motion. Accordingly, this invention provides images of organic objects concealed within moving automobiles without the detritus effects of overlying steel and automobile movement.

A counter top electric appliance optimally performs a variety of cooking modes with both radiant and convective heat sources as well as control means for controlling the timing and intensity of the heat sources. A driver turns food about either a horizontal or a vertical axis of rotation suitable for the specific food and recipe. A hinged door supports the food to be cooked so that in one location the food is caused to be turned by the drive means and in another location the food is loaded into or removed the appliance, external of the cooking compartment, to be easily handled by the operator.

Isolated non-naturally occurring populations of spermatozoa (15) having high purity and technologies to differentiate spermatozoa (28) based on characteristics such as mass, volume, orientation, or emitted light including methods of analysis and apparatus such as beam shaping optics (30) and detectors (32).

The invention discloses an image registration and multi-resolution fusion-based panoramic image splicing method. An adaptive threshold of sequence images is subjected to binary processing and image contour information is extracted by utilizing a pixel neighborhood relationship; a similar region of an image contour structure is quickly estimated through a similarity measurement method for Hu momentinvariant features; and SIFT feature point extraction is performed in a similar region part of two original images. Moreover, feature point initial matching is performed by using a bidirectional K-nearest classification algorithm; mismatched points are screened by an RANSAC algorithm; and an affine transformation matrix among the images is estimated. In addition, in an image fusion aspect, brightness equalization and local color mapping processing is adopted. Then, through an improved Laplacian pyramid multi-resolution fusion algorithm, spliced images are fused to realize seamless splicing. According to the method, the image splicing time is shortened, the image splicing efficiency is improved, the similar region can be quickly located, the mismatch in splicing is effectively improved, and the image registration precision is improved.

Methods and systems for establishing Taylor-Couette flow in a fluid are provided. Aspects of the disclosed methods and systems incorporate laminar Taylor-Couette flow in combination with a source of radiation to provide more uniform radiation exposure to the fluid and its components. Common problems of non-uniform radiation levels and concentration boundary layer effects in UV reactors are largely eliminated using the methods and devices provided herein. In an exemplary embodiment, the reactor of the present disclosure has a hollow outer cylinder or stator and a rotor positioned therein and smooth walls for both the outer wall of its rotor and the inner wall of the outer cylinder or stator in which the rotor is positioned, the space between which forming the annular fluid gap.

A method for applying microwave techniques to embroidered surgical implants including using microwave technology in the process of acetate removal and using microwave technology in the process of drying implants.

The invention relates to a mask plate and a manufacture method thereof. The mask plate comprises a lightproof region, a fully transparent region and a partial transparent region; the partial transparent region is formed in a such way that a semi-transparent part and a transparent part are alternatively arranged. The invention is a new mask plate manufactured by combining a grey mask plate technique and halftone mask plate technique; the mask plate ensures that the exposure of photoresist at the lower part of the partial nonopaque region is uniform when in use, which is beneficial to forming the smooth surface of a partial maintaining region of the photoresist, thereby facilitating the TFT groove etch and improving the yield of array substrates, at the same time, the obliquity of the photoresist at the edge of the partial maintaining region of the photoresist is increased, thereby the technique can be accurately controlled in the process of forming the TFT groove.

An x-ray breast imaging system comprising a compression paddle in which the compression paddle comprises a front wall and a bottom wall. The front wall is configured to be adjacent and face a chest wall of a patient during imaging and the bottom wall configured to be adjacent a length of a top of a compressed breast. The bottom wall extends away from the patient's chest wall, wherein the bottom wall comprises a first portion and a second portion such that the second portion is between the front wall and the first portion. The first portion is generally non- coplanar to the second portion, wherein the compression paddle is movable along a craniocaudal axis. The x-ray breast imaging system also comprises a non-rigid jacket releasably secured to the compression paddle, the non-rigid jacket positioned between the compression paddle and the patient.

A process and apparatus for coal pyrolysis pretreatment. The apparatus is made up of a pretreatment vessel for holding a bed of coal particles, a preheater for heating the bed of coal particles to a temperature below the coal pyrolysis temperature range and an oxygen remover for removing oxygen released from the heated coal particles. The apparatus can also have a flue gas source as an oxygen removal sweep gas to the bed of coal, a collector for collecting non-condensable combustible gases, and the preheater having a furnace holding ceramic balls which are circulated from the furnace to the bed of coal particles. The process involves heating the bed of coal particles to a temperature below the coal pyrolysis temperature range and preventing air from contacting the bed of coal particles in addition to collecting non-condensable combustible gases or the preheating step accomplished by having a furnace holding ceramic balls which are circulated from the furnace to the bed of coal particles.

Methods and systems for establishing Taylor-Couette flow in a fluid are provide. Aspects of the disclosed methods and systems incorporate Taylor-Couette flow in combination with a source of radiation to provide more uniform radiation exposure to the fluid and its components. Common problems of non-uniform radiation levels and concentration boundary layer effects in UV reactors are largely eliminated using the methods and devices provided herein.

Methods for forming a dense dielectric layer over the surface of an opening in a porous inter-layer dielectric having an ultra-low dielectric constant are disclosed. The disclosure provides methods for exposing the sidewall surface and the bottom surface of the opening to a plurality of substantially parallel ultra-violet (UV) radiation rays to form a dense dielectric layer having a substantially uniform thickness over both the sidewall surface and the bottom surface.

Provided are a light filter manufacturing method and an exposure mask plate. The light filter manufacturing method comprises the step of providing a substrate; forming a black matrix with a net structure on the substrate, wherein the black matrix is provided with an opening and exposed out of the surface of the substrate; forming a negative photoresist material on the surfaces of the substrate and the black matrix; adopting the exposure mask plate to conduct exposure treatment on the photoresist material and enabling the exposure amount received by a overlapped region of the photoresist material and the black matrix to be smaller than the exposure amount received by the residual open region; conducting developing treatment on the exposed photoresist material to form a light resistance layer. The exposure mask plate is used for the light filter manufacturing method. The exposure mask plate comprises a shading region and an exposure region, wherein multiple protrusion structures are arranged at the edge position in contact with the exposure region in the shading region. The horned portions of the light resistance layer can be decreased or eliminated, the phenomenon that poor liquid crystal deflection caused by too thick horns influences a light filer and the display performance of a liquid crystal display is prevented, and further the cost of light filter can be reduced.

A modulator for radiation therapy provides modulation of an area beam to decrease treatment time. Separate channels passing modulated “beamlets” are possible by spacing the channels such that spreading of the beams and multiple angles of treatment eliminate cold spots. The space between the channels allows well-defined channel walls and space for modulator mechanisms.

Methods and apparatuses are disclosed for faster curing of three-dimensionally inkjet printed articles (88) having a curable binder. After the printing of the article (88) is completed, a gas flow is driven in the powder bed (90) that surrounds the article (88). The build box (54) which contains the powder bed (90) may include one or more gas-permeable features (14) in contact with the powder bed (90). The gas-permeable feature (14) may be in the form a plurality of gas-permeable disks (18) which are flush with the supporting surface (26) of the build box floor (12) and which are in fluid communication with the channels (28) of the bottom surface (30) of the build box floor (12). Curing apparatuses (50) are disclosed which have a cavity (68) for receiving the build box (54) and a gas propulsion device (74a) for driving a gas flow in the build box (54). Methods also include driving gas flow in the powder bed (90) by way of wands (230) and paddles (240).