摘要:
The present invention provides methods of obtaining structural information about a biopolymer sample. The methods include labeling portions of a biopolymer, such as DNA or RNA, linearizing the biopolymer in some cases, and determining the distance between the labels. The user can then compare different samples' between-label distances to qualitatively compare different samples and to assay a given sample for additions or deletions of nucleotides in the regions flanked by the labels. The methods also permit sequencing of biopolymers.
摘要:
One aspect of the present invention includes a reference current generator circuit. The circuit includes a bias circuit configured to generate a reference current along a first current path and a second current along a second current path. The reference current and the second current can be proportional. The circuit also includes a first pair of transistors connected in series and configured to conduct the reference current in the first current path. The circuit further includes a second pair of transistors connected in series and configured to conduct the second current in the second current path. The second pair of transistors can be coupled to the first pair of transistors to provide a collective resistance value of the second pair of transistors that is proportional to temperature.
摘要:
Provided are methods and devices for single-molecule genomic analysis. In one embodiment, the methods entail processing a double-stranded nucleic acid and characterizing said nucleic acid. These methods are useful in, e.g., determining structural variations and copy number variations between individuals.
摘要:
A polynucleotide is barcoded using a method whereby an isolated, individual polynucleotide is immobilized on a solid phase and stretched, targets are labeled using target-specific hybridization probes, and an individual label of an unamplified probe at each of the labeled targets is optically detected. The order of the labels is determined to form a barcode representation of the polynucleotide wherein the targets and their relative positions are represented.
摘要:
Disclosed is a self rising cover assembly for use on a machine housing which includes a frame and a plurality of panels connected to the frame to define the machine housing. The cover assembly includes a flat body member which is pivotally connected to a portion of the frame to pivot from a closed horizontal position to an open nearly vertical position to provide operator access to the interior of the machine housing. A spring loaded actuator is interconnected between the body member and the frame which exerts sufficient upward torque on the body member to overcome the downward torque on the body member from the force of gravity to urge the body member upwardly after it has been manually lifted through a relatively short distance, after which the actuator moves the body member to the fully open position. The amount of torque exerted on the body member by the actuator to ensure that it becomes self rising at the desired point in its upward movement and that it remains in the open position until it is manually closed.
摘要:
An apparatus is provided for buffering transport of freshly inked documents. The apparatus has a plurality of opposite, parallel, threaded conical screw conveyers. Each pitch of the screw conveyer creates a drying station for an inked document. As inked documents travel upon the threads of the screw conveyers, the conical shape of the conveyers maintain the document in a substantially central position. A lower deck is provided for receiving inked documents. The buffer apparatus has a pusher mechanism to control document movement from the buffer to a downstream document handler, such as an envelope flapper.