Abstract: The disclosure relates to obstacle array devices (also known as bump array devices) for separating populations of particles by size. Improvements over previous obstacle array devices are realized by causing the fluid velocity profile across gaps between obstacles to be asymmetrical with respect to the plane that bisects the gap and is parallel to the direction of bulk fluid flow. Such asymmetry can be achieved by selecting the shape(s) of the obstacles bounding the gap such that the portions of the obstacles upstream from, downstream from, or bridging the narrowest portion of the gap are asymmetrical with respect to that plane. Improvements are also realized by using obstacles that have sharp edges bounding the gaps. Other improvements are realized by selecting obstacle shapes such that the critical particle dimensions defined by the gaps in two different fluid flow directions differ.

Abstract: A radiation detection aircraft has at least one component member of the aircraft having scintillator material. A signal converter is coupled to the at least one component member. An accumulator is coupled to the signal converter.

Abstract: The present invention relates to fluorescent dyes based on acridine derivatives and use of such dyes, for example, in biochemical and/or cell based assays. A preferred feature of some of the dyes described is their long fluorescence lifetimes and their use to label biological molecules.

Abstract: A universal cross belt sorter system (1) consisting of four major components: a monorail track (26), a drive car (20), multiple cross belt cars (24) and system controls. The drive cars (20) pull multiple cross belt cars (24) along the track (26). The cross belt cars (24) are typically loaded with material, which is then discharged into outlets. An outlet may be a chute, a bin, a conveyor, a truck, etc. Sortation systems are typically used to consolidate material according to selected pa-rameters, such as zip code, customer order, to replenish a specific store and many other identifying information. The cross belt cars (24) are loaded with material at induction areas (3). The types or methods of inducting material onto the cross belt cars (24) range from manual to semi-automatic to fully automatic.

Abstract: A method and system are provided for facilitating decision making, such as in a clinical setting. In accordance with this technique, a set of encoded guidelines are executed to identify information that may be used to generate patient management options. The information is acquired, if available. Based on the encoded guidelines and the acquired information, a set of patient management options are generated and provided to one or more reviewers for review and selection of a patient management option.

Abstract: A device for detecting impurities in a noble gas includes a detection chamber and a source of pulsed ultraviolet light. The pulse of the ultraviolet light is transferred into the detection chamber and onto a photocathode, thereby emitting a cloud of free electrons into the noble gas within the detection chamber. The cloud of electrons is attracted to the opposite end of the detection chamber by a high positive voltage potential at that end and focused onto a sensing anode. If there are impurities in the noble gas, some or all of the electrons within the cloud will bond with the impurity molecules and not reach the sensing anode. Therefore, measuring a lower signal at the sensing anode indicates a higher level of impurities while sensing a higher signal indicates fewer impurities. Impurities in the range of one part per billion can be measured by this device.

Abstract: The invention is directed to an apparatus and a method of separating particles, such as cells, from a heterogeneous fluid, such as blood, where the particles have a large range of sizes.

Abstract: The invention is directed to an interacting microhabitat array for microorganisms having more than one microhabitat in a substrate in which at least two microhabitats are connected in series by at least one corridor. The corridor is of sufficient size to allow the microorganism to move between microhabitats in a restricted manner. The invention is also directed to uses of the device for screening for method of modulating biofilms and identifying drug candidates.

Abstract: A device for detecting impurities in a noble gas includes a detection chamber and a source of pulsed ultraviolet light. The pulse of the ultraviolet light is transferred into the detection chamber and onto a photocathode, thereby emitting a cloud of free electrons into the noble gas within the detection chamber. The cloud of electrons is attracted to the opposite end of the detection chamber by a high positive voltage potential at that end and focused onto a sensing anode. If there are impurities in the noble gas, some or all of the electrons within the cloud will bond with the impurity molecules and not reach the sensing anode. Therefore, measuring a lower signal at the sensing anode indicates a higher level of impurities while sensing a higher signal indicates fewer impurities. Impurities in the range of one part per billion can be measured by this device.

Abstract: A magazine for a firearm includes an elongated containing body and a closure member adapted to hold cartridges. The closure member longitudinally slides on the containing body and is extendable to open a side of the containing body for cartridge loading. The closure member has opposing sidewalls forming an integral handle surface that can be grasped for moving it. A follower and spring bias cartridges toward one end of the magazine. A latching mechanism is provided for holding the follower in a disengaged position when the closure member is extended, and is configured to release when the closure member is closed. Preferably, the containing body and closure member are constructed to include integrally formed features that cooperate with an automatic latching mechanism, thus minimizing parts.

Abstract: The present invention relates to a device for interfacing nanofluidic and microfluidic components suitable for use in performing high throughput macromolecular analysis. Diffraction gradient lithography (DGL) is used to form a gradient interface between a microfluidic area and a nanofluidic area. The gradient interface area reduces the local entropic barrier to nanochannels formed in the nanofluidic area. In one embodiment, the gradient interface area is formed of lateral spatial gradient structures for narrowing the cross section of a value from the micron to the nanometer length scale. In another embodiment, the gradient interface area is formed of a vertical sloped gradient structure. Additionally, the gradient structure can provide both a lateral and vertical gradient.

Abstract: Methods for high resolution tissue imaging in which a tissue to be imaged is labeled with UCP's coupled to probes that bind specifically to biological markers on the tissue; the UCP's are then excited with electrons so that the UCP's emit cathodoluminescent photons; after which the photon emission is converted to a visible image. Methods for measuring water content, blood content or blood oxygenation in tumor tissue are also disclosed.

Abstract: A sheet feeding apparatus for feeding a stack of sheets in a direction of movement to a process station, including: a sheet tray for holding the stack of sheets; an air plenum, positioned above the stack of sheets, for picking up a sheet from the stack of sheets when a vacuum force in the air plenum; a paper fluffer for blowing air between individual sheets in the stack.

Abstract: A universal cross belt sorter system (1) consisting of four major components: a monorail track (26), a drive car (20), multiple cross belt cars (24) and system controls. The drive cars (20) pull multiple cross belt cars (24) along the track (26). The cross belt cars (24) are typically loaded with material, which is then discharged into outlets. An outlet may be a chute, a bin, a conveyor, a truck, etc. Sortation systems are typically used to consolidate material according to selected pa-rameters, such as zip code, customer order, to replenish a specific store and many other identifying information. The cross belt cars (24) are loaded with material at induction areas (3). The types or methods of inducting material onto the cross belt cars (24) range from manual to semi-automatic to fully automatic.

Abstract: A method and apparatus for fractionation of charged macro-molecules such as DNA is provided. DNA solution is loaded into a matrix including an array of obstacles. An alternating electric field having two different fields at different orientations is applied. The alternating electric field is asymmetric in that one field is stronger in duration or intensity than the other field, or is otherwise asymmetric. The DNA molecules are thereby fractionated according to site and are driven to a far side of the matrix where the fractionated DNA is recovered. The fractionating electric field can be used to load and recover the DNA to operate the process continuously.

Abstract: A sheet feeding apparatus for feeding a stack of sheets in a direction of movement to a process station, including: a sheet tray for holding the stack of sheets; an air plenum, positioned above the stack of sheets, for picking up a sheet from the stack of sheets when a vacuum force in the air plenum; a paper fluffer for blowing air between individual sheets in the stack, the paper fluffer having a system for adjusting air flow between individual sheets.

Abstract: A mobile power generation system is provided. The system includes a main trailer having an engine and an electric generator turned by the engine, an air filtration trailer having air filtration equipment for filtering air used as inlet air to the engine, an exhaust trailer having a part of an exhaust silencing system for reducing engine output noise, and an auxiliary trailer having auxiliary equipment for use during operation of the engine.

Abstract: A system and method for automatically grading and inputting grades to electronic gradebooks includes a digital camera connected to a computer. A document, e.g., a test, can be placed within the view of the digital camera. A grading/data label can be affixed to the document and includes input bubbles or handwritten indicia within designated areas that can be completed to indicate a student identification number, answers to an exam/test/quiz/etc., and/or a grade. The computer includes a program for locating the grading/data label and further locating the completed bubbles and/or handwritten indicia within the grading/data label. Information corresponding to the completed bubbles or handwritten indicia can then be automatically graded, if desired, and input to an electronic gradebook within or available to the computer.

Abstract: A sheet feeding apparatus for feeding a stack of sheets in a direction of movement to a process station, including: a sheet tray for holding the stack of sheets; an air plenum, positioned above the stack of sheets, for picking up a sheet from the stack of sheets when a vacuum force in the air plenum; a paper fluffer for blowing air between individual sheets in the stack.

Abstract: A sheet feeding apparatus for feeding a stack of sheets in a direction of movement to a process station, including: a sheet tray for holding the stack of sheets; an air plenum, positioned above the stack of sheets, for picking up a sheet from the stack of sheets when a vacuum force in the air plenum; a paper fluffer for blowing air between individual sheets in the stack, the paper fluffer having a system for adjusting air flow between individual sheets.