Abstract:
The invention relates to a device and a method of use for that device for the automated preparation of nucleic acid from a biological sample. The device includes a cassette in which all chemical manipulations occur, which has a storage/transfer strip (380) where the prepared nucleic acid is deposited and stored without contamination. Moreover, the waste of the preparation protocol is contained in the cassette, which, upon separation of the filled storage/transfer strip (380) is completely sealed off from the environment. In a preferred embodiment, the inventive device can prepare nucleic acid preparations from up to 24 different biological samples at a time.
Abstract:
The invention relates to the detection of a polynucleotide using a padlock probe, whereby a hybridization process is combined with ligation to irreversibly capture polynucleotides of interest. The invention relates both to the padlock probe itself, as well as to methods of use, which allow for varying levels of sensitivity due to amplification of signal processes built into the system. Additionally, preferred formats are disclosed for use of the padlock probes, including the use of microfluidics.
Abstract:
The present invention is a method of sequencing polynucleotides by sequential step sequencing. Sequential step sequencing begins with a single-stranded polynucleotide template that is annealed with a primer forming a primer-template complex. In one embodiment of the method, one labeled nucleotide at a time is added to the primer-template complex. Alternatively, this method can be used with a nucleotide or nucleotide analog that does not stop addition after a first nucleotide or nucleotide analog has been added to the primer. Other embodiments of the invention involve identification of polynucleotides having a contiguous non-redundant string or a superimposed non-redundant string pattern. The detection of a non-redundant contiguous string can be used to identify a particular gene. Alternatively, if the non-redundant contiguous string is not unique to a particular gene, the string can be used to form a DNA library that can then be searched with a second string. Similarly, a superimposed non-redundant string pattern can be used to identify a gene or to search a DNA library. Such strings can be used in annealing reactions and in computer searches of a database having a catalog of sequenced polynucleotides.
Abstract:
A signal processing apparatus (100, 400) and concomitant method for learning and using fidelity metric as a control mechanism and to process large quantities of fidelity metrics from a visual discrimination measure (VDM) (111) to a manageable subjective image quality ratings. The signal processing apparatus incorporates a VDM (111) and a neural network (112). The VDM (111) receives input image sequences and generates fidelity metrics, which are received by a neural network (112). The neural network (112) is trained to learn and use the fidelity metrics as a control mechanism, e.g., to control a video encoder.
Abstract:
The present invention is directed to electrostatic chucks, methods for their use, the electrostatic deposition of objects, such as particles in a dry powder, onto recipient substrates, and the recipient substrates themselves that have been subjected to electrostatic deposition. In one aspect, the present invention provides an electrostatic chuck (620) for electrostatically attracting an object (680) or objects wherein the object is used in chemical or pharmaceutical assaying or manufacturing. The object can be pharmaceutical substrates, for example, such as a pharmaceutical tablet. Additional embodiments of the invention provide chucks and their use to electrostatically attract particles, such as pharmaceutical active ingredient, to a substrate, such as a tablet. In one aspect, the electrostatic chuck (1110) includes a floating electrode (1170), thereby providing for charge imaging for the deposition particles in a selected image. Additionally, the invention provides a sensing electrode (1310), optionally for use with an electrostatic chuck, for sensing the number of particles attracted to the objects on the chuck or other substrate, thereby providing for deposition of an accurate amount of particles. Furthermore, the present invention provides objects having selected areas in which particles are applied to the object via electrostatic means.
Abstract:
An apparatus (400) and concomitant method for decomposing an image stream into units of local contrast. A temporal contrast transform (pyramid) comprises a spatial filter (410), a cascade of lowpass temporal filters (420) and a plurality of subtractors (430) and dividers (440). The spatial filter (410) is followed by a cascade of lowpass temporal filters (420), producing a set of temporally lowpass, spatially lowpass images. Adjacent filter outputs are then subtracted, producing a set of temporally bandpass (Laplacian) images. Finally, each Laplacian image is divided by a lower level temporal lowpass image, to produce a set of temporally bandpass contrast images.
Abstract:
An apparatus for assessing the visibility of differences between two input image sequences. The apparatus comprises a pair of pre-filtered processors (710), a pair of pyramid constructors (720) and a JND processor (740). Each pre-filter processor (710) receives a separate input image sequence (202, 204) and performs temporal filtering to produce a low-pass temporal response (A LOW and B LOW) and a bandpass temporal response (A HIGH and B HIGH). In turn, the pyramid constructors (720) receive the temporal responses and generate contrast pyramids (722, 724) for the temporal responses. The JND processor (740) evaluates the contrast pyramids (722, 724) to produce an image metric which is used to assess the visibility of differences between the two input image sequences.