摘要:
The present invention provides a source node device and a destination node in a data processing system, a data processing system, and a decoding method. The source node device includes: an encoding unit, configured to conduct an encoding processing on collected original data according to a codebook including an encoded numerical value and a sending interval corresponding to the original data so as to encode the original data into encoded data having a corresponding encoded numerical value included in the codebook, and to determine a sending interval corresponding to the encoded data included in the codebook. According to the present invention, sending intervals of different encoded data are determined and distinguished based on sending intervals corresponding to the encoded data included in the codebook, which provides a better performance on channel load, channel access collisions, energy efficiency, consumed resources or lifetime of the data processing system.
摘要:
New tertiary amine salts are useful as gas hydrate inhibitors in oil and gas production and transportation. These tertiary amine salts give very good separation from an emulsion, are economic and have reduced toxicity concerns.
摘要:
Embodiments of the invention generally include multicomponent catalyst systems, polymerization processes and reactor blends formed by the processes. The multicomponent catalyst system generally includes a first catalyst component selected from an isotactic directing metallocene catalyst. The multicomponent catalyst system further includes a second syndiotactic directing metallocene catalyst component.
摘要:
Method employing a supported metallocene catalyst composition in the production of an isotactic ethylene propylene co-polymer. The composition comprises a metallocene component supported on a particulate silica support having average particle size of 10-40 microns, a pore volume of 1.3-1.6 ml/g, a surface area of 200-400 m2/g. An alkylalumoxane cocatalyst component is incorporated on the support. The isospecific metallocene is characterized by the formula: B(CpRaRb)(FlR′2)MQn (1) or by the formula: B′(Cp′R′aR′b)(Fl′)M′Q′n′ (2) In the formulas Cp and Cp′ are substituted cyclopentadienyl groups, Fl and Fl′ are fluorenyl groups, and B and B′ are structural bridges. R′ are substituents at the 2 and 7 positions, Ra and R′a are substituents distal to the bridge, and Rb and R′b are proximal to the bridge. M and M′ are transition metals, Q′ is a halogen or a C1-C4 alkyl group; and n′ is an integer of from 0-4.
摘要:
Propylene polymerization processes, polymers and films formed therefrom are described herein. The propylene polymerization processes generally include contacting propylene and an amount of ethylene with a first metallocene catalyst and a second metallocene catalyst within a polymerization reaction vessel to form a propylene based polymer, wherein the amount is an amount effective to form the propylene based polymer including from about 2 wt. % to about 6 wt. % ethylene, the second metallocene catalyst is capable of incorporating a greater amount of ethylene into the propylene based polymer than the first metallocene catalyst and wherein the first metallocene catalyst is capable of forming a propylene/ethylene random copolymer exhibiting a melting temperature that is greater than that of a propylene/ethylene random copolymer formed from the second metallocene catalyst.
摘要:
Oxazolidinium compounds are formed by the reaction of a halohydrin or an epoxide with a secondary amine and an aldehyde or a ketone. The oxazolidinium compounds are formed directly and do not require the reaction of a pre-formed oxazolidine with an alkylating agent. The compounds are useful as gas hydrate inhibitors in oil and gas production and transportation. The oxazolidinium compounds have the structure: where R is a saturated or unsaturated alkyl group containing from 3 to 20 carbon atoms, where R has an absence of aryl groups; R1 and R2 each independently have 1 to 20 carbon atoms, may be linear, branched or cyclic; linear, branched or cyclic groups having 1 to 20 carbon atoms substituted with alkyl groups, aryl groups, alkylaryl groups, and aryl groups substituted with alkoxy groups, and X is selected from the group consisting of chlorine, fluorine, bromine or iodine.
摘要翻译:恶唑烷鎓化合物通过卤代醇或环氧化物与仲胺和醛或酮的反应形成。 恶唑烷鎓化合物直接形成,不需要预形成的恶唑烷与烷基化剂的反应。 该化合物可用作油气生产和运输中的天然气水合物抑制剂。 恶唑烷鎓化合物具有以下结构:其中R是含有3至20个碳原子的饱和或不饱和烷基,其中R不存在芳基; R 1和R 2各自独立地具有1至20个碳原子,可以是直链,支链或环状的; 被烷基取代的具有1至20个碳原子的直链,支链或环状基团,芳基,烷基芳基和被烷氧基取代的芳基,X选自氯,氟,溴或碘。
摘要:
System and methods for media distribution are described. In one embodiment, a method of media distribution includes rendering of a media to a user, stopping the rendering of the media, and storing remaining media not rendered to the user in a user server. The method further includes receiving a request to stream the remaining media to the user, dividing the remaining media into segments, and assigning a priority to each segment. The remaining media is streamed, leaving out segments with priority lower than a threshold priority.
摘要:
In accordance with an embodiment, a method of authenticating images includes electronically receiving an anchor image and a query image, performing a feature point extraction of an anchor image, and performing a feature point extraction of a query image. The method also includes clustering feature points of the anchor image and feature points of the query image, where clustering includes determining matching feature points, determining outlier feature points, and excluding outlier feature points. Whether the anchor image is similar to the query image is determined based on a distance between the feature points of the anchor image and the feature points of the query image. If the anchor image is similar to the query image, possible tampered areas of the query image based on the outlier feature points are identified.
摘要:
A wireless communication network, a communication method and a node for the wireless communication network are disclosed. The wireless communication network includes a plurality of peer nodes communicating with each other through a control channel and a plurality of data channels. The communication method may include: transmitting available data channel information via a routing request signal; modifying available data channel information received by the source node or the other intermediate nodes, and transmits the modified available data channel information via a routing request signal; determining an agreed data channel for communication between the destination node and the source node or between the destination node and the intermediate node, according to the available data channel information transmitted from the source node or the intermediate node; and notifying an intermediate node as a previous hop and/or the source node of an identification of the agreed data channel via a routing response signal.
摘要:
The technical challenges for a smooth transition between using both a thermodynamic hydrate inhibitor (THI) and a kinetic hydrate inhibitor (KHI) to simply using only the KHI in multiple tie-in gas natural gas production systems is solved by adding more THI in a first pipeline leg of the production system while ceasing adding THI in a second pipeline leg of the system. Further, more KHI is added into the second leg of the system, and subsequently THI is gradually and/or slowly reduced in the remaining legs of the system until only KHI is being injected, after which the KHI amount in all legs may be reduced to the equilibrium or steady-state levels.