Abstract: A dosage form with a first portion and a second portion. The first portion can be an immediate release portion and can comprise a pain reliever, which can be naproxen or naproxen sodium. The second portion can be an extended release portion and can comprise pseudoephedrine or a pharmaceutically acceptable salt thereof and/or dextromethorphan or a pharmaceutically acceptable salt thereof. The dosage form can optionally comprise a stabilizing agent. The dosage form can be adapted to maintain a therapeutically effective amount of pain reliever, pseudoephedrine, or a pharmaceutically acceptable salt thereof, and/or dextromethorphan, or a pharmaceutically acceptable salt thereof, for at least eight hours.

Abstract: A dosage form with a first portion and a second portion. The first portion can be an immediate release portion and can comprise a pain reliever, which can be naproxen or naproxen sodium. The second portion can be an extended release portion and can comprise pseudoephedrine or a pharmaceutically acceptable salt thereof and/or dextromethorphan or a pharmaceutically acceptable salt thereof. The dosage form can optionally comprise a stabilizing agent. The dosage form can be adapted to maintain a therapeutically effective amount of pain reliever, pseudoephedrine, or a pharmaceutically acceptable salt thereof, and/or dextromethorphan, or a pharmaceutically acceptable salt thereof, for at least eight hours.

Abstract: A dosage form with a first portion and a second portion. The first portion can be an immediate release portion and can comprise a pain reliever, which can be naproxen or naproxen sodium. The second portion can be an extended release portion and can comprise pseudoephedrine or a pharmaceutically acceptable salt thereof and/or dextromethorphan or a pharmaceutically acceptable salt thereof. The dosage form can optionally comprise a stabilizing agent. The dosage form can be adapted to maintain a therapeutically effective amount of pain reliever, pseudoephedrine, or a pharmaceutically acceptable salt thereof, and/or dextromethorphan, or a pharmaceutically acceptable salt thereof, for at least eight hours.

Abstract: A dosage form with a first portion and a second portion. The first portion can be an immediate release portion and can comprise a pain reliever, which can be naproxen or naproxen sodium. The second portion can be an extended release portion and can comprise pseudoephedrine or a pharmaceutically acceptable salt thereof and/or dextromethorphan or a pharmaceutically acceptable salt thereof. The dosage form can optionally comprise a stabilizing agent. The dosage form can be adapted to maintain a therapeutically effective amount of pain reliever, pseudoephedrine, or a pharmaceutically acceptable salt thereof, and/or dextromethorphan, or a pharmaceutically acceptable salt thereof, for at least eight hours.

Abstract: A supported nanofiber medium useful for segregating chemical species is provided by selecting a polymer, selecting a substrate; and electrospinning the polymer to form a nanofiber medium on the supporting substrate. When the substrate is a planar surface, the nanofiber medium will be a mat suitable for conducting chromatographic separation. When the substrate is a filament, the nanofiber medium is an annular mat suitable for solid phase microextraction. The nanofiber media formed may be selectively cross-linked and at least partially carbonized to carbon nanofibers. The nanofiber medium is supported on the substrate without the use of binder material.

Abstract: An actuator configured to rapidly vary the throat geometry of a microjet nozzle. Varying the throat geometry rapidly changes the characteristics of the microjet produced by the microjet nozzle. The inventive device is capable of producing pulsed flow. In some embodiments it is also capable of producing rapidly variable flow in order to provide active control.

Abstract: According to one aspect, this invention provides an apparatus for varying the stiffness of a leg of a robotic system. The apparatus includes a compliant spine assembly including a compliant spine mounted for movement adjacent the leg and a rack coupled to the compliant spine. It also includes a motor assembly positioned to move the compliant spine of the compliant spine assembly with respect to the leg, the motor assembly including a gear engaging the rack of the compliant spine assembly and a motor coupled to drive the gear. The compliant spine of the compliant spine assembly is configured to vary the stiffness of the leg of the robotic system as it is moved by the motor assembly with respect to the leg.

Abstract: A supported nanofiber medium useful for segregating chemical species is provided by selecting a polymer, selecting a substrate; and electrospinning the polymer to form a nanofiber medium on the supporting substrate. When the substrate is a planar surface, the nanofiber medium will be a mat suitable for conducting chromatographic separation. When the substrate is a filament, the nanofiber medium is an annular mat suitable for solid phase microextraction. The nanofiber media formed may be selectively cross-linked and at least partially carbonized to carbon nanofibers. The nanofiber medium is supported on the substrate without the use of binder material.

Abstract: A supported nanofiber medium useful for segregating chemical species is provided by selecting a polymer, selecting a substrate; and electrospinning the polymer to form a nanofiber medium on the supporting substrate. When the substrate is a planar surface, the nanofiber medium will be a mat suitable for conducting chromatographic separation. When the substrate is a filament, the nanofiber medium is an annular mat suitable for solid phase microextraction. The nanofiber media formed may be selectively cross-linked and at least partially carbonized to carbon nanofibers. The nanofiber medium is supported on the substrate without the use of binder material.

Abstract: According to one aspect, this invention provides an apparatus for varying the stiffness of a leg of a robotic system. The apparatus includes a compliant spine assembly including a compliant spine mounted for movement adjacent the leg and a rack coupled to the compliant spine. It also includes a motor assembly positioned to move the compliant spine of the compliant spine assembly with respect to the leg, the motor assembly including a gear engaging the rack of the compliant spine assembly and a motor coupled to drive the gear. The compliant spine of the compliant spine assembly is configured to vary the stiffness of the leg of the robotic system as it is moved by the motor assembly with respect to the leg.

Abstract: An actuator configured to rapidly vary the throat geometry of a microjet nozzle. Varying the throat geometry rapidly changes the characteristics of the microjet produced by the microjet nozzle. The inventive device is capable of producing pulsed flow. In some embodiments it is also capable of producing rapidly variable flow in order to provide active control.

Abstract: A supported nanofiber medium useful for segregating chemical species is provided by selecting a polymer, selecting a substrate; and electrospinning the polymer to form a nanofiber medium on the supporting substrate. When the substrate is a planar surface, the nanofiber medium will be a mat suitable for conducting chromatographic separation. When the substrate is a filament, the nanofiber medium is an annular mat suitable for solid phase microextraction. The nanofiber media formed may be selectively cross-linked and at least partially carbonized to carbon nanofibers. The nanofiber medium is supported on the substrate without the use of binder material.