摘要:
A radio-frequency (RF) transmitter power amplifier circuit provides for practically linear performance by predistorting the amplifier input signals to compensate for amplifier distortion at high power levels, and provides a fine degree of control of amplifier power needed to handle complex modulation schemes with widely and rapidly varying power requirements. A predistortion database (20) contains gain and phase corrections for various transmission types and a separate automatic gain control database (38) contains fine amplifier gain corrections. A real-time processor (26) combines the two types of corrections and applies them to the amplifier input signals, and a background processor (16) continually updates both databases in accordance with a programmable priority scheme. Integration of predistortion and amplifier power control is achieved in a manner that minimizes adverse effects of one type of control on the other. One feature of the invention provides for rapid convergence of the predistortion correction.
摘要:
A deployable monitoring device is provided comprising a self-righting housing and a video capturing device. The housing has a base and an opposed end disposed along an axis, with a center of gravity disposed about the base, and is self-righting along the axis. The housing, when righted, is supported by the base. The video capturing device captures video data of an external scene. At least one stabilizer device is operably engaged with the housing about the base. Each stabilizer device extends radially outward of the base and substantially axially along an outer surface thereof, and is configured to stop rotation of the housing about the axis before the housing is righted, following deployment of the housing. The video data can be transmitted by a transceiver module to a station remotely disposed from the housing, to provide a remote visual depiction of the scene. An associated method is also provided.
摘要:
Compounds are provided having the formula: wherein variables R0, R1, R2, R3, R4, Q, L and subscript n are as described herein. The subject compounds are useful for treatment of infammatory and immune conditions and diseases. Compositions and methods of treatment using the subject compounds are also provided. For example, the subject methods are useful for treatment of inflammatory and immune disorders and disease such as multiple sclerosis, rheumatoid arthritis, psoriasis, and inflammatory bowel disease.
摘要:
Compounds are provided having the formula: wherein variables A1, A2, A3, A4, R1, R2, R3, R4, Q and L are as described herein. The subject compounds are useful for treatment of inflammatory and immune conditions and diseases. Compositions and methods of treatment using the subject compounds are also provided. For example, the subject methods are useful for treatment of inflammatory and immune disorders and disease such as multiple sclerosis, rheumatoid arthritis, psoriasis, and inflammatory bowel disease.
摘要:
A manifold for a fuel cell includes at least one floating manifold port disposable in an oversized opening defined in a manifold frame, the manifold port being shiftable in at least one plane relative to the oversized opening for reducing the positional tolerance requirement of the manifold port, thereby effecting enhanced mating of adjacent fuel cell components. A method of forming a manifold for a fuel cell is further included.
摘要:
A method for well construction and completion is disclosed. Generally the method comprises the steps of 1) drilling through an injection zone, 2) positioning an extendable permeable element on the casing capable of stopping formation material from entering the well bore, 3) positioning the casing such that the extendable elements are aligned with the injection zone, 4) extending the member such that they come into direct contact with the injection zone formation, 5) running tubing/completion equipment, and 6) begin injecting the desired fluids into the well. Thus eliminating the need to perforate and gravel pack the well while improving reliability of the injection well completion.
摘要:
The present invention relates to a method of labelling soya varieties as to their suitability as a subsequent crop to maize when weed control in that maize crop has been carried out using HPPD inhibitor herbicides, wherein: a) in a first step, a reference soya variety is selected which, when grown as a subsequent crop to maize wherein weed control has been carried out using HPPD inhibitor herbicides, exhibits a visually determinable phytotoxicity with respect to those HPPD inhibitor herbicides; b) in a second step, the phytotoxicity of soya varieties when grown as a subsequent crop to maize wherein weed control has been carried out using HPPD inhibitor herbicides is determined in relation to that reference soya variety in the form of a factor; and c) in a third step, said soya varieties are labelled with said factor.
摘要:
A computer system for use in reducing overall pipeline inventory within a distribution network that includes a central warehouse that is: (1) adjacent a transportation hub; and (2) configured to store sufficient component parts to provide a regular stream of parts to each of a plurality of manufacturing facilities. The computer system is preferably configured for coordinating the transportation of a regular stream of parts to each of the manufacturing facilities by transporting component parts from the central warehouse to the manufacturing facilities primarily via an expedited delivery service performed using the transportation hub. The expedited delivery service may include, for example, guaranteed delivery within one or two days. This reduces the overall pipeline and warehouse inventory within the distribution network by reducing the average transit time for each part, and by reducing the amount of safety stock that is needed to support the operations of the manufacturing facilities.
摘要:
A lighter includes a butane fuel reservoir, a valve, a mixer with a choke, a movable combustion space and movable top door over the combustion space which interact to allow a wheel and flint igniter to initiate a post mix flame above the top of the combustion space followed by the opening of the top and migration of the flame into the combustion space to create a strong torch-like premixed flame thereafter.
摘要:
A deployable monitoring apparatus is provided comprising an ovate housing with a video capturing device and a spatial orientation device operably engaged therewith. The housing has a base and an opposed end disposed along an axis, with a center of gravity disposed about the base so as to be self-righting such that the opposed end extends substantially upwardly from the base. The video capturing device is configured to capture video data of a scene external to the housing, and the spatial orientation device is configured to associate a spatial orientation with the video data. The video data and spatial orientation can be transmitted by a transceiver module to a disposed remotely station, so as to provide a spatially-oriented remote visual depiction of the scene. The housing may also include other devices such as, for example, a deterrent device or a distraction device associated therewith. An associated method is also provided.