摘要:
An apparatus and process are provided for cold pasteurizing a food product such as a ground beef food product, using visible and near infrared light. The invention includes radiating the food product with pulsed near infrared light having a wavelength capable of penetrating the food product to at least about one centimeter in depth and further, radiating nonionizing radiation into the food product to inactivate bacterium, particularly iron dependent bacterium, therein. The nonionizing radiation preferably includes visible and near infrared wavelengths, with ultraviolet wavelengths filtered therefrom. The invention may further include using a pulsed heat exchanger to supercool the food product during the pulsed radiation treatment.
摘要:
A process is provided for sanitizing fresh foods and beverage products using multiple stages of exposure to different wavelengths of ultraviolet, near infrared and infrared light. A food or beverage product is exposed to ultraviolet light at germicidal wavelengths in order to inactivate undesirable microorganisms on the product. The exposure to ultraviolet light causes damage to the organoleptic qualities product which are subsequently restored by photoreactivation upon exposure of the product to a source of polychromatic near infrared light. In addition, prior to the inactivation of microorganisms, the food or beverage may be exposed to a source of infrared light in order to inactivate enzymes responsible for decomposition of the product. Apparatus suitable for practicing the process of the present invention is also provided, including specific platform arrangements for sanitizing solid, liquid and fluid food and beverage products.
摘要:
The present invention relates generally to securing a sheet medium onto a support surface and, more particularly, to a print drum for supporting a flexible film sheet medium on a relieved support surface so as to desensitize to medium to the effects of debris contamination and air turbulence for allowing the sheet to be imprinted with consistent resolution.
摘要:
A hand sanitizer generally includes an ozone producing, germicidal ultraviolet lamp for oxidizing organic debris and inactivating bacteria and viruses on the surface and subsurface of hands. In addition, a polychromatic light source is provided for destruction of residual ozone and photoreactivating, or photorepairing, ultraviolet induced effects on the skin. The lamps may be disposed in a free standing housing having a chamber for containing the produced ozone and receiving hands in a vertical orientation. Fans may be provided for circulating the ozone and atmospheric gas throughout the chamber and for evaporating residual moisture from the skin. A light source for destroying excess ozone is also provided which may be operated after the organic debris has been oxidized. Shields are provided within the chamber in order to protect a user's eyes from exposure to the ultraviolet light. The apparatus may be powered entirely by conventional solar panels.
摘要:
An apparatus for cold pasteurization of food products sized and adapted for domestic use, is provided. The apparatus includes a housing, a source of ultraviolet radiation disposed within the housing and having germicidal wavelengths, and a rotatable basket for containing a food product and exposing the product to the source of ultraviolet radiation in order to inactivate pathogens on the food product. A mistifier is provided for directing an aqueous rinse into the basket and onto the food product in order to prevent degradation of organoleptic qualities of the product which may be caused by the ultraviolet treatment. The aqueous rinse may be tap water and the water directed onto the source of ultraviolet radiation in order to sterilize the tap water. An outlet is provided for dispensing the sterilized water for consumption.
摘要:
A system for sheetwise dry processing thermographic print media is disclosed. The media is a laminate of a substrate with an attached frangible tab, a peel sheet and an adhesive image forming layer. A feeder feeds the sheets one at a time from a first position and orientation to a second position and orientation with the tab at a trailing end. A print roller is mounted for reversible rotation in infeed and outfeed directions. The print roller has clamps for engaging the sheet as received from the sheet feeder. A thermal printer cooperates with the print roller for thermally exposing the substrate. A peeler receives the sheet from the print roller with the tab at the leading edge. The peeler captures the film and engages the tab bending the substrate about the score line causing it to fracture. The peeler pulls the substrate and adhered image layer apart from peeler sheet to thereby produce a peeled substrate with an image layer and a waste peeler sheet. A thermal laminator receives the substrate and image layer for thermal laminating engagement with a thermosensitive film having a thermosensitive layer transferrable to the image layer of the substrate. The film is thereafter stripped from the structure and the substrate transferred to a discharge receptacle.
摘要:
There are method and apparatus for automatically clamping and cinching a flexible sheet medium on a rotatable supporting surface with clamping and cinching forces which independently increase as function of the rotational speed of the support surface. The clamp applies such forces to at least one edge of the sheet medium in a manner so that the sheet edge will not bend or push the sheet edge away from a pivot axis of the clamp so as to reduce sheet medium separation.
摘要:
A system and a method for detecting the existence of a target substance, the system includes a laser with a broad spectral output and a detector for detecting an absorption spectrum of a laser beam from the laser. The method includes emitting a laser beam into the atmosphere using a laser light with a broad spectral output; measuring the absorption spectrum of said laser beam; comparing the absorption spectrum to known absorption spectrums for target substances using a detector; and detecting the existence of a target substance.
摘要:
Methods and apparatus for peeling a laminate containing image media wherein the leading edge portion of the laminate is struck by beater blades to initially separate the leading edge portion of one layer from the laminate. The separated leading edge portion is then transported into a nip defined by a peel surface and a lower peel roll after which the leading edge portion is bent about the peel surface by a folder driven by a linkage mechanism. While the leading edge portion of the laminate is bent, one layer is held by a vacuum device while the remainder of the laminate returns to its path of travel under its own resiliency. The separated layer is then peeled from the laminate by take-away rolls while guided by the peel surface. The remainder of the laminate is guided by a deflector roll to move along the path at a predetermined angle while the layer is being peeled. In one method, the layer is peeled at an angle to the longitudinal direction of the laminate. This is effected by orienting the peel surface and the lower peel roll with their axes extending at an angle to the path of travel of the laminate. Further, a method includes having the layer peeled at an angle other than the screen angle of the imaged and non-imaged portions of the laminate. A small diameter peel surface is used for effective peeling.
摘要:
A solar array maximum power point tracking system for regulating the power output of a solar array associated with a spacecraft. An on-board computer measures the bus voltage and current from the solar array and generates a power calculation of the solar array power output. The on-board computer applies a first reference signal to a remote error amplifier representative of an incremental change in the solar array power. Additionally, the solar array bus voltage is applied to the remote error amplifier such that the remote error amplifier senses the solar array bus voltage and generates an output voltage indicative of the change of the solar array power. The output voltage of the error amplifier is applied to a power processor unit. The output voltage from the remote error amplifier and the bus voltage are applied to a power stage within the power processor unit. The power stage generates an output current that is applied to an arcjet thruster. The output current is also applied to a transconductive circuit that converts the output current to a voltage so as to condition the input voltage to the power stage.