摘要:
A process for the production of acetic acid by carbonylating methanol and/or a reactive derivative thereof with carbon monoxide in at least one carbonylation reaction zone containing a liquid reaction composition comprising an iridium carbonylation catalyst, methyl iodide co-catalyst, a finite concentration of water, acetic acid, methyl acetate, at least one promoter selected from ruthenium, osmium and rhenium and at least one catalyst system stabiliser selected from indium, cadmium, mercury, gallium and zinc and wherein the molar ratio of iridium:promoter:stabiliser in the liquid reaction composition is maintained in the range 1:(>2 to 15):(0.25 to 12).
摘要:
A method for provisioning a Video-On-Demand server with enough bandwidth to stream videos to subscribers such that the probability of the Video-On-Demand server not having enough bandwidth to stream video to a subscriber is less than a set value.
摘要:
In response to one or more ad break indications, one or more channel changes may be caused from a program stream channel to one or more other channels comprising advertising content.
摘要:
A system, such as a switched broadcast content delivery system, may include and/or involve at least one video server, and logic to select one or more ads for streaming by the at least one video server, the one or more ads selected at least in part according to information about which of one or more regional modulators are passing and/or will be passing content with which the one or more ads are associated.
摘要:
A process for the removal of corrosion metal contaminants from a carbonylation catalyst solution comprising an iridium and/or rhodium carbonylation catalyst, an alkali and/or alkaline earth metal and corrosion metal contaminants in which the catalyst solution is contacted with a cation exchange resin having its active sites partially loaded with a sufficient amount of alkali and/or alkaline earth metal to maintain the concentration of said alkali and/or alkaline earth metal in the catalyst solution and recovering a catalyst solution of reduced corrosion metal contaminant content.
摘要:
A process for the production of acetic acid by carbonylating methanol and/or a reactive derivative thereof with carbon monoxide in a carbonylation reactor containing a liquid reaction composition comprising an iridium carbonylation catalyst, methyl iodide co-catalyst, a finite concentration of water, acetic acid, methyl acetate, at least one promoter selected from ruthenium, osmium and rhenium and a stablising compound selected from the group consisting of alkali metal iodides, alkaline earth metal iodides, metal complexes capable of generating I—, salts capable of generating I—, and mixtures of two or more thereof wherein the molar ratio of promoter to iridium is greater than 2:1, and the molar ratio of stabilising compound to iridium is in the range [greater than 0 to 5]:1.
摘要:
A video-on-demand server includes interface modules each providing a communication interface between the video-on-demand server and a switching network; an interface to a management module to monitor and provide to the video-on-demand server information on video-on-demand bandwidth utilization of network resources allocated to particular service groups, each service group including video-on-demand customers sharing a same fixed network bandwidth allocation; each interface module communicatively coupled to service groups simultaneously via service gateways; a total bandwidth of the server is an aggregate bandwidth of all the interface modules, and is less than an aggregate bandwidth of all service groups assigned to be serviced by the server, the switching network configured to make the server available for receiving video on demand service requests from all of the service group customers simultaneously; the server adapted to dynamically assign bandwidth of the server to service groups, by adapting the switching network to dynamically change communication connections between interface modules and service groups, the adaptations to the switching network based upon information about the bandwidth utilization of network resources received from the management module.
摘要:
A custom ad selection and delivery system may include an ad selector to select candidate ads for one or more ad avail opportunities, a bandwidth resource manager to provide information about available bandwidth in a content delivery system, and a policy manager to weight ad avail opportunity versus bandwidth costs to delivery customized advertising to subscribers, and to cause allocation of bandwidth and insertion of customized ads into multiple program streams comprising the same program content but different ad content, and to cause different subscriber equipment to map different program frequencies to similar content streams having advertising content inserted therein that is customized to different subscriber demographics.