Abstract:
A method for constructing an index suitable for indexing a large set of records identified by long generally randomly distributed record names and for answering membership queries about the set, the method comprising assigning each different record a different record name, determining that a new record name is not already represented in the index by checking an entry in a first level index that is shorter than the complete new record name, and determining that a queried record name is already represented in the index by determining that the queried record name is represented in a second level index that contains enough information to reconstruct the complete queried record name.
Abstract:
On a document collaboration system, such as a wiki, the content of postings to the collaboration system is monitored for sensitive information. Under some embodiments, when instances of such sensitive information are detected, an e-mail is sent to the user that posted the collaboration page posting. In other embodiments, a message is then sent to a person associated with the entity that indicates that the information placed on the collaboration page is confidential information or is related to an asset of the entity. In further embodiments, individual people are assigned responsibility for monitoring the use of certain instances of sensitive information on the collaboration system. Each user is only notified when the instances they are responsible for appear on a collaboration page. In other embodiments, if a collaboration page includes an instance of sensitive information, access to the collaboration page is changed such that fewer people can access the collaboration page.
Abstract:
An index is constructed that is suitable for indexing a large set of records identified by randomly distributed record names and for answering membership queries about the set. The index has more than one level and the first-level index typically resides in RAM. Like a Bloom Filter, the first level index provides a non-membership indication with certainty and a membership indication with a controlled probability of error. Unlike a Bloom filter, entries in the first level index correspond uniquely to distinct records. Use is made of the statistical properties of a sorted list of random numbers in order to represent the first level index compactly.
Abstract:
A promoted activated carbon sorbent is described that is highly effective for the removal of mercury from flue gas streams. The sorbent comprises a new modified carbon form containing reactive forms of halogen and halides. Optional components may be added to increase reactivity and mercury capacity. These may be added directly with the sorbent, or to the flue gas to enhance sorbent performance and/or mercury capture. Mercury removal efficiencies obtained exceed conventional methods. The sorbent can be regenerated and reused. Sorbent treatment and preparation methods are also described. New methods for in-flight preparation, introduction, and control of the active sorbent into the mercury contaminated gas stream are described.
Abstract:
Bacteria are incubated to form a biofilm on projections by providing a flow of liquid growth medium across projections, the direction of the flow of liquid being repeatedly changed, and an assay made of the resulting biofilm. Bacteria are incubated to form a biofilm on projections arranged in rows, with several projections in each row, while providing a flow of liquid growth medium across each row of projections, and an assay made of the resulting biofilm. Sensitivity of the biofilm to antibacterial reagent may be determined by treating the projections with antibacterial reagent before carrying out the assay, by treating each row of projections with a different antibacterial reagent, and each of the projections in a row with a different concentration of antibacterial reagent.
Abstract:
Bacteria are incubated to form a biofilm on projections by providing a flow of liquid growth medium across projections, the direction of the flow of liquid being repeatedly changed, and an assay made of the resulting biofilm. Bacteria are incubated to form a biofilm on projections arranged in rows, with several projections in each row, while providing a flow of liquid growth medium across each row of projections, and an assay made of the resulting biofilm. Sensitivity of the biofilm to antibacterial reagent may be determined by treating the projections with antibacterial reagent before carrying out the assay, by treating each row of projections with a different antibacterial reagent, and each of the projections in a row with a different concentration of antibacterial reagent. A biofilm assay device includes a vessel including at least one channel for flow of liquid growth medium, projections arranged in at least one row and having a support for supporting the projections within the channel, and a tilt table to flow liquid growth medium along each channel in different directions across the projections. A further biofilm assay device includes a vessel including channels for flow of liquid growth medium, projections arranged in rows and having a support for supporting the projections within the channels, and a rocking table to rock the vessel and flow liquid growth medium along each channel across the projections.
Abstract:
On a document collaboration system, such as a wiki, the content of postings to the collaboration system is monitored for sensitive information. Under some embodiments, when instances of such sensitive information are detected, an e-mail is sent to the user that posted the collaboration page posting. In other embodiments, a message is then sent to a person associated with the entity that indicates that the information placed on the collaboration page is confidential information or is related to an asset of the entity. In further embodiments, individual people are assigned responsibility for monitoring the use of certain instances of sensitive information on the collaboration system. Each user is only notified when the instances they are responsible for appear on a collaboration page. In other embodiments, if a collaboration page includes an instance of sensitive information, access to the collaboration page is changed such that fewer people can access the collaboration page.
Abstract:
Within a document collaboration system, such as a wiki application, a logging component operates in association with a server. The logging component automatically creates and maintains a log of interactions between the server and users of the document collaboration system. The content of the log has a predictable format. In one embodiment, an analysis component identifies, from the log, entries associated with a failed search for a document in the collaboration system database. The terms not represented in the database are identified from the failed search entry. In this manner, statistics related to frequently unsuccessful search terms are generated and utilized as a basis for identifying opportunities for effective expansion of the content of the collaboration application.
Abstract:
A method and apparatus is provided for regenerating a sorbent that has been poisoned by components derived from flue gas. The sorbent is treated with an agent to remove the poisoning components and introduce a promoting agent into the sorbent. The method and apparatus can also be used to enhance the effectiveness of a new sorbent.
Abstract:
Biofilm forming organisms are incubated to form a biofilm on projections by providing a flow of liquid growth medium across projections, the direction of the flow of liquid being repeatedly changed, and an assay made of the resulting biofilm. Biofilm forming organisms are incubated to form a biofilm on projections arranged in rows, with several projections in each row, while providing a flow of liquid growth medium across each row of projections, and an assay made of the resulting biofilm. Sensitivity of the biofilm to antimicrobial reagent may be determined by treating the projections with antimicrobial reagent before carrying out the assay, by treating each row of projections with a different antimicrobial reagent, and each of the projections in a row with a different concentration of antimicrobial reagent.