摘要:
A last-in first-out data stack is able to store a plurality (n) of elements wherein the plurality is greater than two. For each of n storage locations in the stack a selector is adapted to receive n elements read out from the stack and a new element. The selector is arranged to make a controllable selection of its received elements. Combinational logic capable of performing logic manipulations on the selection of elements provides a resultant for pushing onto the stack.
摘要:
A method of testing data packets uses a program of selected microcode instructions of which at least one prescribes a comparison between a series of data patterns and a series of test patterns. Data patterns and test patterns are stored in dynamic random access memory. A first group of one of said series of patterns is read out and stored in temporary storage locations. A first group of the other of said series of patterns is read out and stored in temporary storage locations. Each of the patterns in the first group of the other series of patterns is compared, as it is stored, with a respective one of the stored patterns of the first series. The invention renders the testing of data packets more efficient.
摘要:
Described herein is a cost effective method and system for removal of thiosulfate from a solution in-line with a process system. The method and system include passing the solution in contact with an open-structured substrate impregnated with a Group 16 element, which results in removal of thiosulfate from the solution and conversion of the thiosulfate to at least sulfite.
摘要:
A support impregnated with selenium and capable of effectively removing a heavy metal from a process stream that is at an ambient temperature or is at an elevated temperature.
摘要:
Methods and apparatus relate to removing selenium from a fluid. The fluid includes non-selenium constituents that are insoluble at a pH in which the fluid is passed through a sorbent bed in order to remove the selenium. Fouling of the sorbent bed can thereby result due to accumulation of the non-selenium constituents, which are precipitated solid materials. Intermittent washing of the sorbent bed with a heated and alkaline wash dissolves and removes the non-selenium constituents to maintain efficient operation and sustain selenium removal performance.
摘要:
A plurality of serial data streams are transmitted on a corresponding plurality of lines at a common frequency in equal groups of symbols. A framing signal composed of groups of symbols corresponding in number to groups of data symbols is transmitted on an additional control line. Each group of symbols in the framing signal includes a majority of symbols capable of representing a first plurality of code words and a second plurality, substantially less than the first plurality, of valid code words, and a minority of symbols which constitute parity check symbols. Each of the valid code words consists of a first sub-group of similar symbols and a second plurality of similar symbols. For some of the valid code words the symbols in the first sub-group are similar to the symbols in the second sub-group. For other valid code words the symbols in the first sub-group are different from the symbols in the second sub-group. The valid code words correspond to groups which represent (a) start of a data packet or block; (b) data/(c) a gap between groups of data; and (d) an idle state. The sequence of groups in the framing signal is monitored by means of a state machine.
摘要:
Synthesis of a support material impregnated with silver sulfide provides a sorbent composition. Generating the silver sulfide relies on reaction of sulfur dioxide and one of hydrogen gas and hydrogen sulfide in presence of the support material following silver loading of the support material. Contacting a fluid stream with the sorbent composition removes heavy metal from the fluid stream.
摘要:
There is provided a method for removing selenium from an aqueous influent, comprising: adding a water-soluble reducing agent to an aqueous influent containing an oxidized selenium compound (Sex, wherein x is the oxidation state and x>0); reducing said Sex using said reducing agent at a temperature; removing said Se0 from said aqueous influent using a sorbent or a technique selected from the group consisting of filtration, coagulation, flocculation, clarification and centrifugation.
摘要:
Methods and apparatus relate to treating fluid to at least reduce selenium content within the fluid. The treating includes conditioning stages to alter a composition of the fluid prior to removal of the selenium content from the fluid. The composition of the fluid after the conditioning stages facilitates the removal of the selenium content or at least limits detrimental impact to selenium removal efficiency.
摘要:
The release by trichomonads of a hydrolase that hydrolyzes a narrowly defined class of substrates at a low pH without interference from hydrolases that are unrelated to trichomoniasis is the basis for a selective diagnostic assay for trichomoniasis that measures hydrolysis of any of these substrates by vaginal fluid at a low pH. Selective assays for trichomoniasis are also obtained by removing particulate matter from a sample of vaginal fluid to extract a fraction devoid of particles greater than a selected size, and where desired, combining the extracted fraction with any of certain specified hydrolase inhibitors, then testing the fraction for enzymatic hydrolase activity. These qualities of trichomoniasis are the basis for a series of diagnostic tests and test devices that produce results that are detectable by visual and other means with a high degree of accuracy.