摘要:
A high efficiency, multi-stage fuel cell system method and apparatus is provided. The fuel cell system is comprised of multiple fuel cell stages, whereby the temperatures of the fuel and oxidant gas streams and the percentage of fuel consumed in each stage are controlled to optimize fuel cell system efficiency. The stages are connected in a serial, flow-through arrangement such that the oxidant gas and fuel gas flowing through an upstream stage is conducted directly into the next adjacent downstream stage. The fuel cell stages are further arranged such that unspent fuel and oxidant laden gases too hot to continue within an upstream stage because of material constraints are conducted into a subsequent downstream stage which comprises a similar cell configuration, however, which is constructed from materials having a higher heat tolerance and designed to meet higher thermal demands. In addition, fuel is underutilized in each stage, resulting in a higher overall fuel cell system efficiency.
摘要:
Food compositions include carbohydrate, fat, and at least about 15 wt. % protein based on the total weight of the composition and a water activity of less than about 0.85 aw when measured at 25 degree celsius or a shelf-life at 25 degree celsius of at least 12 months. The food compositions are provided in a ready-to-eat form or incorporated into a bar, chew, filling or paste.
摘要:
This invention increases the flow of breathable air from an air pump to an enclosure such as a hood or enclosed structure without requiring an increase in the air pump output. The invention involves interposing an jet venturi induction pump in the conduit between the air pump and the enclosure. Breathable filtered, muffled, and metered ambient air is induced into the jet venturi induction pump, thereby increasing the flow of breathable air into the enclosure without an increase in the air pump output. In addition, the jet venturi induction pump cools and reduces the humidity of the air emitted from the air pump.
摘要:
A novel and soluble polypeptide that is highly conserved among vertebrates has been discovered, which is designated "noggin." The properties of noggin include dorsal growth inducing activity. Noggin and activin act synergistically to produce dorsal mesoderm. Noggin's cDNA has been cloned. Several expression systems have been successfully used to express biologically active noggin. Amino acid sequences representing completely conserved portions as between frog noggin and mouse noggin are: QMWLWSQTFCPVLY (SEQ ID NO:3); RFWPRYVKVGSC (SEQ ID NO:4); SKRSCSVPEGMVCK (SEQ ID NO:5); LRWRCQRR (SEQ ID NO:6); and, ISECKCSC (SEQ ID NO:7).
摘要翻译:已经发现了一种在脊椎动物中高度保守的新型和可溶性多肽,其被称为“头蛋白”。 头蛋白的性质包括背生长诱导活性。 Noggin和激活素协同作用产生背部中胚层。 Noggin的cDNA已被克隆。 已经有几种表达系统被成功地用于表达生物活性头发。 代表完全保守部分的氨基酸序列,如青蛙头蛋白和小鼠头蛋白之间是:QMWLWSQTFCPVLY(SEQ ID NO:3); RFWPRYVKVGSC(SEQ ID NO:4); SKRSCSVPEGMVCK(SEQ ID NO:5); LRWRCQRR(SEQ ID NO:6); 和ISECKCSC(SEQ ID NO:7)。
摘要:
This invention reduces the air pollution associated with spraying of paints, coatings, solvents or pesticides against a surface. Spraying invariable causes bounceback of sprayed solids as well as overspray consisting of bounceback and an aerosol of solids, solvent, and air and is an important source of air pollution. This invention is a resprayer consisting of a jet venturi induction pump located near the front of a spray gun which captures the overspray and a respray nozzle which redeposits the captured material on the work surface.
摘要:
An spray gun extension used in the application of liquids such as paints and other coatings, cleaning solutions, solvents, blasting agents, solvents, sealants, lubricants and pesticides in high volume low pressure spraying. The extension allow the application of such liquids to areas above, below, around, behind, or into devices or fixtures not visible and otherwise inaccessible to the applicator. The extension is rotatively mounted to the spray gun. A spray head is rotatively mounted on the extension. A variety of spray nozzles may be used, including a fixed nozzle, and a nozzle which may be used to vary the spray pattern width and fan shape. Liquid flow is controlled by a needle valve near the end of the extension. The extension may be used to spray straight ahead or at any angle including back toward the spray gun.
摘要:
A coupon dispensing system which displays a number of images, each image representing a product to be promoted and including a product selection area to be manipulated by a consumer to select that product. A switch is associated with each selection area to register the selection. The system receives an access code unique to the consumer, records product selections made by the consumer, compares the product selected by the consumer with a preselected quota, and issues a coupon for the product selected by the consumer if the quota for that consumer is not exceeded.
摘要:
Electrostatic discharge properties of materials are quantitatively measured and ranked. Samples (20) are rotated on a turntable (15) beneath selectable, co-available electrostatic chargers (30/40), one being a corona charging element (30) and the other a sample-engaging triboelectric charging element (40). They then pass under a voltage meter (25) to measure the amount of residual charge on the samples (20). After charging is discontinued, measurements are continued to record the charge decay history over time.
摘要:
A point of sale wood chip classifier includes apparatus for receiving and discharging unclassified wood chips onto a longitudinally extending downwardly angled trough-shaped vibratory classification bed which includes a plurality of rotating disks for promoting tumbling of the chips toward an overflow end, the bed including openings between the disks defining a plurality of classification zones of increasing size along the bed in the downhill direction. A plurality of collection bins are located below the classification zones for receiving the classified chips, the classification bins being carried on respective load cells which signal the individual weights of a sample to a microcomputer for calculation of totality of chips and percentages of each classified component.