摘要:
The subject invention includes mutant voltage-gated ion channels that are open over a wide range of potential differences across membranes. The present invention also includes methods of use such mutant voltage-gated ion channels in cells with highly negative potential differences across their membranes. One preferred mutant voltage-gated ion channel is a channel with a mutation at the residue homologous to P513 in Kv1.5 and at least one mutation at one of the residues homologous to R400, R403, and R409 in Kv1.5.
摘要:
Protection transmission unit allocation, such as STS# in a SONET/SDH network utilizing time slot interchange on the working path, may be determined by disseminating connection information, connection identification information, and a prioritization scheme, to nodes on the network and allowing them to deterministically allocate protection transmission units to connections on the protection cycle. Network elements forming physical or logical rings may thus ascertain the location on protection for a given connection without requiring protection unit allocation to be disseminated from a central controller. Since each node is starting with the same connection information and running the same priority determination, each will end up with the same result and will know where to place and find connections on protection. Aspects of the invention may be employed for example in a SONET/SDH based network, a mesh network, or other type of network with dedicated protection paths and transmission allocation on those protection paths.
摘要:
An anchor for a branch wellbore liner. In a described embodiment, a system is used to anchor between an upper portion of a window formed through a sidewall of a first tubular string and an upper end of a second tubular string extending outwardly from the window. The system includes a first anchoring device at the upper portion of the window, and a second anchoring device at the upper end of the second tubular string. The first and second anchoring devices are operative to secure the upper end of the second tubular string to the upper portion of the window.
摘要:
A building panel has a unitary foamed core, and a unitary cover layer of resinous polymeric material covering the core and covering a bottom edge or drip edge and an upper edge of the panel. A system for installation of adjacent panels includes the adjacent panels having vertical clip-receiving grooves slidably receiving narrow edges of a clip. The clip holds adjacent panels in coplanar abutting relationship to minimize movement while installed on a wall of a building.
摘要:
A system, method, and computer program product for increasing security of grid enabled computing environments. The system, method, and computer program product include: scheduling execution of a computing job; determining if an edge policy exists for the computing job; tracking said execution of the computing job; dividing the computing job into portions; assigning the portions of the computing job according to the edge policy; determining if there is an attempt to violate the edge policy; and prohibiting a violation of the edge policy.
摘要:
A system for producing fluids from a subterranean zone comprises a tubing string disposed in a well bore, the tubing string adapted to communicate fluids from the subterranean zone to a ground surface. A downhole fluid lift system is operable to lift fluids towards the ground surface. A downhole fluid heater is disposed in the well bore and is operable to vaporize a liquid in the well bore. A seal between the downhole fluid lift system and the downhole fluid heater is operable to isolate a portion of the well bore containing the downhole fluid lift system from a portion of the well bore containing the downhole fluid heater. A method comprises: disposing a tubing string in a well bore; generating vapor in the well bore; and lifting fluids from the subterranean zone to a ground surface through the tubing string.
摘要:
The present invention includes a screw tip for an extruder screw for effecting mixing in an extruder. The screw tip has a shaft portion and at least one mixing element ring connected to the shaft portion, or a mixing element having an aperture therethrough, or both.
摘要:
A multi-layered wellbore junction. In a described embodiment, a method of forming an expanded chamber in a subterranean well includes the steps of: positioning multiple chamber sidewall layers in the well; and expanding the layers in the well to form the expanded chamber.