摘要:
A point of use air wand with a built in filtration system may include a wand including a filter body; a filter housed within the filter body; an input endcap attached to a first end of the filter body, the input endcap operatively attached to an air source; and an accumulator endcap attached to a second end of the filter body. Forced air may enter the wand through the input endcap, flow through the filter, and then out of the wand through the accumulator endcap.
摘要:
In accordance with the invention, an improved image sensor comprises an array of germanium photosensitive elements integrated with a silicon substrate and integrated with silicon readout circuits. The silicon transistors are formed first on a silicon substrate, using well known silicon wafer fabrication techniques. The germanium elements are subsequently formed overlying the silicon by epitaxial growth. The germanium elements are advantageously grown within surface openings of a dielectric cladding. Wafer fabrication techniques are applied to the elements to form isolated germanium photodiodes. Since temperatures needed for germanium processing are lower than those for silicon processing, the formation of the germanium devices need not affect the previously formed silicon devices. Insulating and metallic layers are then deposited and patterned to interconnect the silicon devices and to connect the germanium devices to the silicon circuits. The germanium elements are thus integrated to the silicon by epitaxial growth and integrated to the silicon circuitry by common metal layers.
摘要:
A high-speed optical communications cell is integrated at the interior of a two-dimensional imaging array. The combined receiver and imager carries out both photodetection (converting photons to electrons) and circuit functions (e.g. amplifying and integrating the signals from the photodetectors). The high-speed receiver cell comprises a photodetector and a high-speed amplification circuit, providing an electrical output which can follow a rapidly varying optical signal falling on the photodetector. The imaging array comprises an array of photodetectors and readout circuits, providing an electrical representation of the variation of light with position across the receiver surface. The presence of an imaging array surrounding the communications receiver, and in the same plane as it, allows a single optical path to be used for source acquisition and tracking as well as for data reception.
摘要:
Ophthalmic devices are provided having a violet-light vertical cut-off filter abruptly absorbs light between the wave lengths of between approximately and 400 nm and 450 nm such that a curve when plotted as percent transmission versus wavelength has the shape as depicted in FIG. 2. In one embodiment the ophthalmic devices are made from acrylates and the light absorbing compound is an Eastman Yellow 035 MA dye.
摘要:
A needle guard includes a clip with a canting wall to grip the needle shaft and a distal wall to block the tip thereof, wherein the canting and distal walls may be interconnected by an angled strut, a spring member, such as a leaf spring, may have a portion extending past an edge of the strut to bias the clip to grip the needle shaft, and the distal wall may be or include a stylus and have an L-shape to define a lip to help block the needle tip. The clip may have a depending heel to help pivot the clip about a ledge to grip the needle shaft. A needle support may be provided to limit flexure of the needle which might otherwise allow the needle to come loose from the clip. Arrangements for limiting rotation of the needle hub and needle guard housing are provided, as is a protective shroud to reduce the risk of inadvertent activation of the needle guard. Further, the needle guard may be used with a catheter assembly. Also provided is an improved duckbill release mechanism.
摘要:
This invention pertains to certain novel colorant compounds containing one or more ethylenically-unsaturated, photopolymerizable radicals that may be copolymerized (or cured) with ethylenically-unsaturated monomers to produce colored compositions such as colored acrylic polymers. Suitable compositions having the present colorants copolymerized therein include, e.g., polymers produced from acrylate and methacrylate esters, colored polystyrenes, and similar colored polymeric materials derived from other ethylenically-unsaturated monomers. The present invention also pertains to processes for preparing the photopolymerizable colorant compounds. The ethylenically unsaturated colorant compounds may be suitable for use in coatings that are applied to wood, glass, metal, thermoplastics and the like.
摘要:
A method of making a semiconductor device having a predetermined epitaxial region, such as an active region, with reduced defect density includes the steps of: (a) forming a dielectric cladding region on a major surface of a single crystal body of a first material; (b) forming a first opening that extends to a first depth into the cladding region; (c) forming a smaller second opening, within the first opening, that extends to a second depth greater than the first depth and that exposes an underlying portion of the major surface of the single crystal body; (d) epitaxially growing regions of a second semiconductor material in each of the openings and on the top of the cladding region; (e) controlling the dimensions of the second opening so that defects are confined to the epitaxial regions grown within the second opening and on top of the cladding region, a first predetermined region being located within the first opening and being essentially free of defects; (D planarizing the top of the device to remove all epitaxial regions that extend above the top of the cladding layer, thereby making the top of the first predetermined region grown in the second opening essentially flush with the top of the cladding region; and (g) performing additional steps to complete the fabrication of the device. Also described are unique devices, such as photodetectors and MOSFETs, fabricated by this method, as well as unique contacting configurations that enhance their performance.
摘要:
This invention contains an acidic edible liquid composition comprising a low acetylated xanthan gum in an amount effective to substantially sustain the initial viscosity of the composition for at least about four months. Particularly preferred compositions include beverages and syrups. Beverages include, without limitation, carbonated and non-carbonated soft drinks, still beverages, fruit-juice-type beverages, squashes and cordials, alcoholic and nonalcoholic, their concentrates and mixtures thereof. This invention also contains a method for stabilizing an acidic edible liquid composition which comprises admixing therewith an effective amount of a low acetylated xanthan gum in an amount effective to substantially maintain the initial viscosity of the composition for at least about four months under typical storage conditions.
摘要:
A storage phosphor material comprising a storage phosphor of the kind in which electrons excited by incident ionizing radiation may be trapped in stable trap sites and subsequently released by stimulation such as photostimulation, wherein the phosphor is contained within a host matrix which comprises a sol-gel glass in which the storage phosphor is incorporated as a dopant.