摘要:
Processible chromophoric polymers having nonlinear optical properties and wherein the chromophore is present in and is a part of the polymer backbone, including substantially all of the monomer or repeat units, with the dipole moments pointing in the same direction (head-to-tail) along the polymer backbone. Such polymers include phenylene, phenylene vinylene, stilbenylene, phenyl piperdine, and coumarin polymers.
摘要:
The present invention discloses new polymers which can assume an accordion-like conformation of the backbone. These polymers are prepared by the copolymerization of two difuntional, chemically precoupled precursors to chromophoric units. The resulting polymers have a head-to-head, tail-to-tail topology (a syndioregic arrangement of rigid units along the polymer backbone), and the molecular units are designed to fold into an "accordion" conformation. This useful microstructure (a three-dimensional conformation) forms spontaneously (self-assembles); or, it can be brought about by field-assisted processing. Films and fibers of these polymers have useful second-order nonlinear optical properties, and may be used for the modulation and switching of optical communications signals.
摘要:
A method, computer readable medium, and system for providing a mobile communication network includes dynamically forming a plurality of mobile communication devices into one or more clusters based on one or more parameters, each of the one or more clusters having a tree structure. Each of the one or more clusters are at least partially meshed together. At least one virtual identifier is dynamically assigned to each of the plurality of mobile communication devices based on the tree structure of each of the one or more clusters. The virtual identifier provides address information for routing communications between two or more of the plurality of mobile communication devices.
摘要:
A method for accelerated leaching of binder-catalyst material from the polycrystalline diamond structure of a PDC is disclosed. The PDC is sonochemically leached. Also disclosed are fixture, equipment and a system for sonochemically leaching the polycrystalline diamond structure of a PDC.
摘要:
Prior art fuel line check valves remain closed after engine off and cool down. Diurnal heating and the resultant pressure increase in the fuel line causes fuel vapor emissions through small openings in the fuel line (e.g., at the injector tips). The invention provides a check valve for a vehicle fuel line which opens in response to engine cooling and remains open while the engine is off to relieve subsequent increasing pressure in the fuel line due to diurnal heating thereof.
摘要:
Compounds having the formula I wherein A, m and R1 are herein defined are Hepatitis C virus NS5b polymerase inhibitors. Also disclosed are compositions and methods for inhibiting hepatitis replication, processes for making the compounds and synthetic intermediates used in the process
摘要:
A motorized ladder rack for loading or unloading a ladder on a vehicle is provided. The motorized ladder rack comprises a stationary front cradle, a pivotable and extendable rear cradle and a side rail. The rear cradle includes a motorized drive assembly which may be remotely controlled. The front and rear cradles are secured to the vehicle. The front cradle includes a support member, front and side guides removably secured to the support member and a side stop removably secured to the support member. The side rail is secured to the front and rear cradles and extends therebetween. The ladder rack is movable between a first position and a second position by activation of the motorized drive assembly.
摘要:
There are provided an apparatus and an associated method for manufacturing superplastically formed structural assemblies from preforms. The apparatus includes first and second co-operable dies structured to define a die cavity therebetween for at least partially receiving the preform, at least one heater in thermal communication with the die cavity for heating the preform to a forming temperature, and at least one injector in fluid communication with the die cavity. The injector is structured for injecting pressurized gas into the die cavity to urge the preform against one of the dies to form the preform into the structural assembly. Further, at least one of the injectors is structured for injecting a quenchant into the die cavity to thereby heat treat the structural assembly while distortion of the structural assembly is being at least partially restrained by at least one of the dies.
摘要:
A fuel strainer assembly includes a filtration member and an inlet connector connected to the filtration member for connection to an inlet of a fuel pump. The fuel strainer assembly also includes a locking mechanism operatively supported by the inlet connector to operatively engage a shell of the fuel pump to secure the inlet connector to the fuel pump.
摘要:
Various exemplary embodiments are a method and related system and computer-readable medium including one or more the following: receiving a data packet; analyzing the data packet using deep packet inspection (DPI) to determine an application associated with the data packet; determining an MPLS tunnel corresponding to the application associated with the data packet; and forwarding the data packet through the MPLS tunnel. In various exemplary embodiments, the step of analyzing the data packet including examining information in layers 2 through 7 of the data packet or analyzing the data packet to match an application signature. Furthermore, in various exemplary embodiments, the method and related system and computer-readable medium also includes adding a marking to the data packet to indicate the application associated with the data packet.