摘要:
A multi-channel electro-magnetic rotary joint has been invented in which one or more electro-magnetic signals can be transmitted simultaneously from a rotating collimator array to a stationary collimator array, and vice-versa, in air and in other fluids. A photonic crystal based de-rotating mechanism is positioned in the path between said rotating collimator array and said stationary collimator array, and arranged for rotation relative to each collimator arrays at a rotary speed equal to one-half the relative rotational rate between said rotating and stationary collimator arrays. This invention has several different potential applications such radar, winches, and robotics to name a few.
摘要:
An imaging system includes an RF source, a focal plane array and device for focusing the RF signal from the RF source. The focal plane array includes a plurality of carbon nanotube mixers for capturing RF signals and down-converting the signals to a selected bandwidth and output an output signal. The device focuses the RF signal output from said RF source onto the focal plane array.
摘要:
A multi-channel electro-magnetic rotary joint has been invented in which one or more electro-magnetic signals can be transmitted simultaneously from a rotating collimator array and a stationary collimator array in air and in other fluids. A metamaterial de-rotating mechanism is positioned in the path between said rotating collimator array and said stationary collimator array, and arranged tier rotation relative to each collimator arrays at a rotary speed equal to one-hall the relative rotational rate between said rotating and stationary collimator arrays.
摘要:
To synchronize units of a formation evaluation/drilling operation evaluation system, a time delay associated with a communications link between a master unit and a slave unit of the formation evaluation/drilling operation evaluation system is determined. The master unit has a master time clock that provides universal time. The time delay associated with the communications link is used to enable synchronization of time provided by a slave time clock in the slave unit to the universal time.
摘要:
A system and method for inspecting stents can involve an inspection camera to take an image of the stent and a computer system for analyzing the image to determine the presence of any coating defects. The determination can be made by masking out a portion of the stent, identifying deviations from a strut edge, and/or highlighting features protruding from a stent external boundary defining an outer diameter. The image can be taken after a focus feedback camera determines the position of the stent.
摘要:
In a method for regulating a combustion process of an internal combustion engine with exhaust-gas recirculation, which can be operated with a variable air/fuel ratio, and a fresh-air flow and a recirculated exhaust-gas flow, both the fresh air and the recirculated exhaust-gas flow are metered. The combustion process of an internal combustion engine with exhaust-gas recirculation is regulated, wherein the method makes precise determination of the exhaust-gas recirculating rate possible with a low fault tolerance.
摘要:
Method and apparatus for uplink transmission using multiple antennas are disclosed. A wireless transmit/receive unit (WTRU) performs space time transmit diversity (STTD) encoding on an input stream of a physical channel configured for STTD. Each physical channel may be mapped to either an in-phase (I) branch or a quadrature-phase (Q) branch. The WTRU may perform the STTD encoding either in a binary domain or in a complex domain. Additionally, the WTRU may perform pre-coding on at least one physical channel including the E-DPDCH with the pre-coding weights, and transmitting the pre-coded output streams via a plurality of antennas. The pre-coding may be performed either after or before spreading operation.
摘要:
Disclosed herein are antisense compounds and methods for decreasing Factor 9 and increasing clotting time in an individual in need thereof. Examples of disease conditions that can be ameliorated with the administration of antisense compounds targeted to Factor 9 include thrombosis, embolism, thromoboembolism such as deep vein thrombosis, pulmonary embolism, myocardial infarction, and stroke.
摘要:
A complete capillary electrophoresis (CE) system that is capable of providing a continuous flow of effluent at the exit of the flow-through outlet vial is provided. A self-contained capillary electrophoresis system with a flow-through outlet vial for interfacing with mass spectrometry includes a capillary having an upstream inlet end and a downstream terminus end; an electrically conductive hollow needle having an inner wall defining an internal tapered chamber, the internal tapered chamber dimensioned and configured to slidably accept the terminus end of the capillary, the capillary longitudinally inserted into and mounted within the internal tapered chamber to a distance whereby the terminus end of the capillary abuts the inner wall of the needle at the taper; and wherein a micro-reservoir is formed between the terminus end of the capillary and the downstream exit orifice.
摘要:
The present invention connects two independent plastic optical fiber channels simultaneously, in which optic signals can be transmitted along two optic passes through a single mechanical rotational interface. The first channel of light path consists of a pair of plastic optic fibers with larger-core, co-axially fixed in 2 holders respectively. The light signal from one of the fiber can be directly coupled into another fiber. A number of smaller-core plastic optic fibers for second channel of light path are circumferentially arranged in the peripheral space of the first channel fibers. They are blind-spot free during rotation and are ideal for machine control applications such as SERCOS Interfaces. The rugged design permits underwater usage. Damaged fibers can be easily replaced without costly repairs of the device itself.