Abstract: Logo antennas are provided for electronic devices such as portable computers. An electronic device may have a housing with conductive housing walls. A logo antenna may be formed from an antenna resonating element such as a patch antenna resonating element, a monopole antenna resonating element, or other antenna resonating element structure. A conductive cavity may be placed behind the antenna resonating element. A dielectric antenna window that serves as a logo may be used to cover the antenna resonating element. The dielectric antenna window may be mounted in an opening in the conductive housing walls. A positive antenna feed terminal may be coupled to the antenna resonating element. A ground antenna feed terminal may be coupled to the cavity and portions of the conductive housing walls. The dielectric antenna window may be shaped in the form of a logo.

Abstract: Honeycomb catalyst structures and methods of using them, where the structures have honeycomb channel walls of selective catalytic reduction catalyst, the channel walls occupy at least 20% of the volume of the structure, the structure exhibits a pressure drop for flowing air not exceeding about 110 Pa at a space velocity of 20,000 hr?1, and the channel walls are of a thickness insuring high degree of catalyst utilization and NOx conversion efficiency.

Abstract: A multi-input-multi-output (MIMO) communications system is provided for conveying signals over a MIMO channel. The system includes a precoder for precoding a signal based upon a uniform channel decomposition scheme. The system further comprises a transmitter in communication with the precoder for conveying the precoded signal over a subchannel of the MIMO channel.

Abstract: A system for contaminant removal from a fluid stream comprises a plurality of flow through reactors arranged in stages that are spaced apart from one another, each reactor comprising at least one flow-through monolith configured to react with at least one contaminant in a fluid stream, and a flow control system configured to selectively control through which of the plurality of flow-through reactor stages a fluid stream containing at least one contaminant may pass.

Abstract: This is about a type of Piper laetispicum C.DC. extract and the preparation method thereof as well as the application of the extract in preparing drugs, healthcare products and food additives for treating and/or preventing diseases related to monoamine transmitters such as 5-hydroxytryptamine, noradrenaline and dopamine. The extract is obtained through impregnating or percolating at normal temperature or ?70° C., or is obtained through supercritical fluid extraction method, and in comparison with the existing reflux method, it has higher alkaloid content and higher biological activity.

Abstract: A spatial multiplexing architecture is described for a MIMO communications system wherein the receiver feeds a number of bits of channel state information back to the transmitter. The architecture includes jointly designed ordered detection at the receiver and rate/power allocation at the transmitter. The receiver feeds back a finite number of bits to the transmitter regarding the detection order. The transmitter utilizes this detection order information to assign rates and powers. A Greedy ordering Rate Tailored (GRT-SMA) scheme is described which includes independent coding/decoding on each layer.

Abstract: Disclosed herein are wall flow reactors that are suitable for the production of hydrogen gas from hydrocarbon and/or its derivative feed streams. The wall flow reactors are generally comprised a monolithic honeycomb substrate defining a plurality of cell channels bounded by porous channel walls that extend longitudinally from an upstream inlet end to a downstream outlet end; wherein a first portion of the plurality of cell channels are plugged at the downstream outlet end to form inlet cell channels and a second portion of the plurality of cell channels are plugged at the upstream inlet end to form outlet cell channels. A plurality of catalyst layers are positioned within at least a portion of the plurality of cell channels and comprise at least a first catalyst layer and a second catalyst layer. Also disclosed are methods for treating reactant feed streams.

Abstract: A multi-input-multi-output (MIMO) communications system is provided for conveying signals over a MIMO channel. The system includes a precoder for precoding a signal based upon a uniform channel decomposition scheme. The system further comprises a transmitter in communication with the precoder for conveying the precoded signal over a subchannel of the MIMO channel.

Abstract: Porous ceramic honeycomb bodies and methods of making them, wherein the ceramic body has a total porosity (% P) defined by a median pore size (d50) greater than or equal to 10 microns; a pore size distribution d-factor less than 0.8, wherein d-factor=(d50?d10)/d50, and a submicron pore fraction characterized by less than 5% of the total porosity being comprised of pores having a pore diameter less than 1.0 micron.

Abstract: The present invention provides structures and methods that utilize fuel reformation to assist in thermal management of a channel-less SOFC at the device cell and/or stack assembly level. At the device level, passive and/or active control of unreformed fuel, or a mixture of reformed and unreformed fuel, is used to inject fuel in a distributed manner along the anode chamber of the channel-less SOFC. The injected fuel can be controlled in its composition, pressure, velocities, and/or flow rates. Additionally, present invention provides thermal management across a plurality of fuel cells in a stack assembly by actively controlling fuel composition, pressure, velocities, and/or flow rates provided to fuel inlets of the fuel cells.

Abstract: The present invention includes compositions and methods for the characterization and use of novel peptide from Brevibacillus sp., and peptides related thereto, including an isolated and purified, heat stable, amino terminus-methylated, carboxy-terminus reduced peptide that have two or more D-amino acids used as, e.g., an antimicrobial or even a feed additive.

Abstract: A method is disclosed for converting light hydrocarbons (e.g. methane or natural gas) to synthesis gas employing a nonmicroporous, thin shell catalyst that catalyzes a net partial oxidation reaction. Certain preferred catalysts comprise a thin outer layer comprising at least one catalytically active metal disposed on a discrete nonmicroporous support structure. A preferred thin shell catalyst has an effectiveness factor greater than 0.1 when utilized in a partial oxidation reaction.

Abstract: The present invention provides an apparatus and method for optimizing the degree of backmixing within a gas agitated multiphase reactor at a given gas linear velocity. The embodiments of the present invention involve novel configurations of the multiphase reactor internal structures. In general, the configurations comprise creating a dense area of internal structures in the central region and/or wall regions of the multiphase reactor.

Abstract: A converter includes a transformer having a primary winding, a secondary winding and an auxiliary winding, a first switching device for connecting an input voltage to the primary winding of the transformer, an output circuit connected to the secondary winding, a controller, and an integrated active clamp and primary bias circuit. The integrated active clamp and primary bias circuit includes the auxiliary winding and a second switch providing a bias voltage to the controller to alternately operate the first and second switches between conductive and non-conductive states. When the first switch is conductive the second switch is nonconducting and power is transferred from the primary winding to the output circuit via the secondary winding and from the auxiliary winding to the controller. When the first switch is nonconducting, the second switch is conducting and the voltage across the primary winding is clamped.

Abstract: A method for converting light hydrocarbons (e.g. methane or natural gas) to synthesis gas employs a silicon carbide-supported catalyst that catalyzes a net partial oxidation reaction. Certain preferred catalysts include a catalytically active metal disposed on a silicon carbide support.

Abstract: A process, temperature and supply insensitive trapezoidal pulse generator includes a stable reference current source for generating a stable reference current. The trapezoidal pulse generator includes a current amplification circuit adapted to receive the stable reference current and operable responsive to the stable reference current to amplify the stable reference current to a mirrored current. The trapezoidal pulse generator includes an output circuit coupled to the current amplification circuit and adapted to receive the mirrored current and operable in a second frequency to generate a trapezoidal pulse.

Abstract: A process, temperature and supply insensitive trapezoidal pulse generator includes a stable reference current source for generating a stable reference current. The trapezoidal pulse generator includes a current amplification circuit adapted to receive the stable reference current and operable responsive to the stable reference current to amplify the stable reference current to a mirrored current. The trapezoidal pulse generator includes an output circuit coupled to the current amplification circuit and adapted to receive the mirrored current and operable in a second frequency to generate a trapezoidal pulse.

Abstract: A method for water removal in hydrocarbon product reactors operating at Fischer-Tropsch conditions. The water removal decreases the concentration of water in the reactor. In one embodiment, a method of reducing the concentration of water in a Fischer-Tropsch reactor containing a water-rich hydrocarbon product includes removing water from the water-rich hydrocarbon product of the reactor by a water removal means so as to form a water-reduced hydrocarbon product and returning that product to the reactor.

Abstract: Disclosed herein are systems and methods for producing hydrogen in a reactor having a non-catalytic hydrogen selective permeable membrane in thermal contact with a reaction zone.

Abstract: A converter includes a transformer having a primary winding, a secondary winding and an auxiliary winding, a first switching device for connecting an input voltage to the primary winding of the transformer, an output circuit connected to the secondary winding, a controller, and an integrated active clamp and primary bias circuit. The integrated active clamp and primary bias circuit includes the auxiliary winding and a second switch providing a bias voltage to the controller to alternately operate the first and second switches between conductive and non-conductive states. When the first switch is conductive the second switch is nonconducting and power is transferred from the primary winding to the output circuit via the secondary winding and from the auxiliary winding to the controller. When the first switch is nonconducting, the second switch is conducting and the voltage across the primary switch is clamped.