摘要:
The present invention provides nucleic acid based polymerase inhibitors and methods for reducing non-specific polymerase extension and amplification in nucleic acid amplification reactions. The polymerase inhibitors provide a double stranded nucleic acid portion that is recognized by a polymerase enzyme as a template for extension but is incapable of being extended by the polymerase enzyme. The polymerase binds to the polymerase inhibitor which sequesters the enzyme until the temperature achieves a level that denatures the double stranded portion of the inhibitor after which the polymerase is released and can then catalyze nucleic acid extension.
摘要:
A field reconfigurable muxponder for use in an optical transport system. The muxponder includes one or more tributary cards, where each tributary card is adapted to receive an optical data signal and conditions the optical data signal into an intermediate data signal constituted in accordance with a tributary interface format. In this way, the muxponder is able to aggregate optical data signals having different protocols and/or different data rates. The muxponder further includes a chassis that is adapted to receive a predefined number of tributary cards and outputs an optical system signal independently from the availability of the optical data signals from the tributary cards. The tributary cards and the chassis integrally form one line card.
摘要:
Disclosed are methods and kits for identifying and characterizing polynucleotide sequences in a sample which may include a heterogeneous sample. Some of the methods and kits are directed to the identification and characterization of a virus in a sample, which may include HIV capable of cause AIDS or AIDS-like symptoms. The virus may be HIV-1, and may also include drug resistant mutations. The methods may include reacting a mixture that includes, in addition to nucleic acid isolated from the sample, at least one oligonucleotide capable of specifically hybridizing to HIV nucleic acid where the oligonucleotide includes at least one non-natural base. In addition, the methods may include detection of one or more mutations in HIV nucleic acid that are associated with drug resistance.
摘要:
The present invention provides nucleic acid based polymerase inhibitors and methods for reducing non-specific polymerase extension and amplification in nucleic acid amplification reactions. The polymerase inhibitors provide a double stranded nucleic acid portion that is recognized by a polymerase enzyme as a template for extension but is incapable of being extended by the polymerase enzyme. The polymerase binds to the polymerase inhibitor which sequesters the enzyme until the temperature achieves a level that denatures the double stranded portion of the inhibitor after which the polymerase is released and can then catalyze nucleic acid extension.
摘要:
Disclosed are methods and kits for identifying a virulent bacteria in a sample, which may include virulent bacteria belonging to the Bacillus genus (e.g., Bacillus anthracis, Bacillus cereus, and Bacillus thuringiensis). Typically, the methods include (a) reacting a mixture that includes, in addition to nucleic acid isolated from the sample, (i) at least one oligonucleotide capable of specifically hybridizing to nucleic acid of plasmid pX01; and (ii) at least one oligonucleotide capable of specifically hybridizing to nucleic acid of plasmid pX02. In addition, the mixture may include control nucleic acid. In the methods, nucleic acid of plasmid pX01 and nucleic acid of plasmid pX02 are detected, and optionally control nucleic acid is detected, thereby identifying the virulent bacteria.
摘要:
A method and apparatus for cleaning a hearing aid provides a housing having a motor drive and speed control. A rotary chamber is mounted to the housing and driven by the motor drive. A drive shaft can be provided connecting the motor drive and the rotary chamber. The rotary chamber has a wall with at least one receptacle for holding a hearing aid. The rotary chamber can have two openings, one for a hearing aid and a second opening for another hearing aid or a counterweight. The rotary chamber can be counterweighted to compensate for the weight of a single hearing aid or any other arrangements of multiple hearing aids. Each receptacle is configured to hold a hearing aid. The motor drive is powered sufficiently to rotate the hearing aid at the speed of between about 2800 and 3200 rpm in order to generate a G-force on the hearing aid of about 270 G's. Preferably, the motor drive rotates at a rotational speed sufficient to remove earwax, rotation lasting for a period of time of between about 5 and 45 (preferably 18-22) seconds.
摘要:
In the reporting system disclosed herein, a speech recognizer is used to select sections of text from a report form stored in a computer and to insert recognized terms in the text thereby to generate a report text under voice control. A command interpreter, also responsive to spoken words, initiates creation of the report text and its subsequence storing, printing and transmission. The command processor is responsive to respective spoken commands to select a destination telephone number and to cause the report text to be sent to apparatus for converting report text to image data and for modulating an audio band signal with the image data for facsimile transmission over telephone lines.