Abstract: A channel propagation emulator includes a radio peripheral configured to receive input radio frequency (RF) data and modify the input RF data according to channel effects including signal delay, propagation loss and Doppler shift effect to generate an RF output, and a host device operably coupled to the radio peripheral. The RF output represents a modification of the input RF data based on a propagation model. The host device operably coupled to an external controller and is configured to define emulation parameters based on the propagation model. The propagation model is selected at the external controller. The external controller is configured to provide instructions for implementing the Doppler shift effect to include spreading that is multiplicative in frequency.

Abstract: Greater efficiency in a water-alkaline emulsion cumene oxidation process using a cascade of reactors is obtained by splitting the reactor cascade into 2 stages with the first stage utilizing NH.sub.4 NaCO.sub.3 as the active carbonate in the stage containing less than 18% by weight cumene hydroperoxide and using Na.sub.2 CO.sub.3 as the active carbonate in the stage containing more than 18% by weight cumene hydroperoxide. By directly injecting ammonia into a recycle stream organic acids are efficiently neutralized. A counter current water wash of the second stage also increases process efficiency by scrubbing out unwanted impurities. Control of pH in the process improves efficiency and reduces impurity levels.

Abstract: Greater efficiency in a water-alkaline emulsion cumene oxidation process using a cascade of reactors is obtained by splitting the reactor cascade into 2 stages with the first stage utilizing NH.sub.4 NaCO.sub.3 as the active carbonate in the stage containing less than 18% by weight cumene hydroperoxide and using Na.sub.2 CO.sub.3 as the active carbonate in the stage containing more than 18% by weight cumene hydroperoxide. By directly injecting ammonia into a recycle stream organic acids are efficiently neutralized. A counter current water wash of the second stage also increases process efficiency by scrubbing out unwanted impurities. Control of pH in the process improves efficiency and reduces impurity levels.

Abstract: A method and apparatus for establishing an intelligent demarcation between facility and terminal segments of asynchronous optical network. Network management information contained with the overhead structure of the synchronous optical network signal is extracted and manipulated in accordance with a predetermined user specification; overhead data may be translated, terminated, or passed unaltered as required. Overhead processing towards the facility and terminal segments need not be symmetrical. Payload information is passed unaltered although future provisions for encrypting payload data exist. Full performance monitoring is supported along with a built-in-test and diagnostic capability. The device may be both locally and remotely controlled and monitored. Remote control is implemented via the overhead information contained within the synchronous optical network signal.

Abstract: The present invention is an improved method for the recovery of phenol from a cleavage mass resulting from the sulfuric acid cleavage of cumene hydroperoxide comprising neutralizing the cleavage mass, forming an aqueous phase and an organic phase, separating the organic phase into an acetone-rich stream and a phenol-rich stream, removing phenol tars from the phenol-rich stream and cracking the phenol tars wherein the improvement comprises maintaining the pH of the cleavage mass during neutralization between 4.0 and about 4.9 whereby the sulfuric acid is converted to the bisulfate salt and substantially no free sulfuric acid remains in the cleavage mass and corrosion of process equipment is reduced.As a result of this improved process, a phenol tar waste stream containing less than about 4 parts per million by weight of chromium is obtained.

Abstract: This invention relates to processing of a mixture of tars produced in phenol manufacture and in bisphenol manufacture. The heating of a bottom liquid from a bisphenol-A process together with phenol tar from in a cumene-to-phenol process in a distillation column-type thermal cracking reactor at 290.degree.-360.degree. C. at a mass ratio of 1:(1-10) is employed. The process is carried out by feed entering into the middle of the column and valuable products removed as overhead.

Abstract: An improved phenol tar cracking process using a rectification column as a hydrocracker obtains an increased yield of valuable products, phenol, cumene and alpha-methylstyrene, by taking from 50 to 100% of the acetophenone in the reactor overhead with the cracked product stream.

Abstract: A method and apparatus for establishing an intelligent demarcation between facility and terminal segments of a synchronous optical network. Network management information contained with the overhead structure of the synchronous optical network signal is extracted and manipulated in accordance with a predetermined user specification; overhead data may be translated, terminated, or passed unaltered as required. Overhead processing towards the facility and terminal segments need not be symmetrical. Payload information is passed unaltered although future provisions for encrypting payload data exist. Full performance monitoring is supported along with a built-in-test and diagnostic capability. The device may be both locally and remotely controlled and monitored. Remote control is implemented via the overhead information contained within the synchronous optical network signal.

Abstract: In accordance with the invention there is a process for reducing the water content of acetone prepared from cumene which includes the steps ofa. adding cleaving effective catalytic quantities of sulfuric acid to a mixture comprising cumene hydroperoxide and cumene, the cumene hydroperoxide making up about 81 to 83 weight percent of the said mixture, thereby producing a mixture comprising phenol, acetone, cumene and sulfuric acid;b. neutralizing the said sulfuric acid with an aqueous alkali hydroxide and separating the alkali metal sulfate from the mixture comprising phenol, acetone, water and cumene, the water being from about 40 to 60 weight percent of the total weight of water and cumene, the cumene being present in sufficient quantities to cause the formation of two liquid phases upon condensing the acetone fraction distillate;c. separating by distillation the acetone fraction from the phenol fraction, said acetone fraction containing acetone, water, aldehyde, and other organics including cumene;d.