摘要:
Piezoelectric fibers include a polypeptide wherein molecules of the polypeptide have electric dipole moments that are aligned such that the piezoelectric fiber provides a piezoelectric effect at an operating temperature. A piezoelectric component provides a plurality of piezoelectric fibers, each comprising an organic polymer. A method of producing piezoelectric fibers includes electrospinning a polymer solution to form a fiber and winding the fiber onto a rotating target in which the rotating target is electrically grounded. An acoustic sensor includes a plurality acoustic transducers, wherein the plurality of acoustic transducers are structured and arranged to detect a corresponding plurality of vector components of an acoustic signal, and at least one of the plurality of acoustic transducers comprises a piezoelectric fiber.
摘要:
A tape cartridge includes a housing and a tape reel that is rotatable about an axis of rotation. The tape reel is adapted to cooperably engage a reel drive member of a data transfer apparatus that, in use, applies a drive torque to the tape reel to rotate the tape reel about the axis of rotation. The cooperable engagement of the tape reel and reel drive member is such as to secure the tape reel to the reel drive member to at least substantially prevent tipping of the tape reel with respect to the reel drive member.
摘要:
A method of protecting a turbine compressor of a gas turbine engine that is part of an integrated gasification combined-cycle power generation system that includes an air separation unit that may include the steps of: (1) extracting an amount of compressed air that is compressed by the turbine compressor; (2) supplying the extracted amount of compressed air to the air separation unit; and (3) varying the amount of compressed air extracted from the turbine compressor based upon a desired compressor pressure ratio across the turbine compressor. The method further may include the step of supplying the air separation unit with a supply of compressed air from a main air compressor. The amount of compressed air supplied to the air separation unit by the main air compressor may be varied based upon the amount of compressed air extracted from the turbine compressor.
摘要:
An acoustic assembly including an electroacoustical transducer and an acoustic element, separate from the acoustical transducer, designed and constructed to be an element of a structural pillar of an automobile.
摘要:
Disclosed herein is a method for enabling turn down of a turbine engine, comprising: extracting compressor discharge air from a working fluid path before it enters a combustion zone of the turbine engine; and reintroducing the extracted air to the working fluid path downstream of a combustor exit. Further disclosed herein is an apparatus related to a gas turbine, comprising: a compressor section, one or more combustors downstream from the compressor section, a turbine section downstream from the compressor section; and at least one conduit for extracting compressor discharge air from a working fluid path prior to a combustion zone and reintroducing the extracted air to the working fluid path downstream of a combustor exit in response to the turbine being in a turned down condition.
摘要:
A remote unattended camera and computer integrated security system that uses: a computer to process and archive alarm and photographic data; at least one media storage device; at least one network camera for storing and transmitting video and still pictures; a hardware virtual private network firewall for secure review data transfers; a transfer switch; an operating system providing user interface functions; a power source that provides power to said remote unattended camera and computer integrated security system; an enclosure that is tamper resistant, and security seals that provide indication of tampering.
摘要:
The present invention provides a newly identified B7 receptor, zB7R1 that functions as lymphocyte inhibitory receptor, which is a PD-1-like molecule and is expressed on T cells. The present invention also provides the discovery of zB7R1's ability to bind to CD155. Methods and compositions for modulating zB7R1-mediated negative signaling and interfering with the interaction of its counter-receptor for therapeutic, diagnostic and research purposes are also provided.
摘要:
Heterodimeric proteins comprising two helical bundle cytokines are disclosed. One of the polypeptides comprises zsig81 and a second polypeptide which comprises either p19 (aka IL-12A) or p35 (aka L-12A). The proteins may be produced as fusion proteins or expressed as a single chain. The heterdimeric protein comprising zsig81 and p19 is designated zcyto33f2 and the heterodimeric protein comprising zsig81 and p35 is designated zcyto35f2. Zcyto33f2 and zcyto35f2 proteins are associated with epithelial cell types, including lung and gut epithelium, and may play a role in physiological conditions such as inflammation.
摘要:
A method and apparatus for cooling a combustor liner and transitions piece of a gas turbine include a combustor liner with a plurality of circular ring turbulators arranged in an array axially along a length defining a length of the combustor liner and located on an outer surface thereof; a first flow sleeve surrounding the combustor liner with a first flow annulus therebetween including a plurality of axial channels (C) extending over a portion of an aft end portion of the liner parallel to each other, the cross-sectional area of each channel either constant or varying along the length of the channel, the first flow sleeve having a plurality of rows of cooling holes formed about a circumference of the first flow sleeve for directing cooling air from the compressor discharge into the first flow annulus; a transition piece connected to the combustor liner and adapted to carry hot combustion gases to a stage of the turbine; a second flow sleeve surrounding the transition piece a second plurality of rows of cooling apertures for directing cooling air into a second flow annulus between the second flow sleeve and the transition piece; wherein the first plurality of cooling holes and second plurality of cooling apertures are each configured with an effective area to distribute less than 50% of compressor discharge air to the first flow sleeve and mix with cooling air from the second flow annulus.