Abstract:
A gas processing device includes a sample inlet defining a gas flow path into a housing, and a pump and a noise dampening device disposed in the housing. The noise dampening device includes an inlet chamber, an outlet chamber, and an elastomeric membrane interposed between and fluidly isolating the inlet chamber and the outlet chamber. The inlet chamber is interposed between the sample inlet and the pump inlet, and the outlet chamber communicates with the pump outlet.
Abstract:
A chemical sensor and a system and method for sensing a chemical species. The chemical sensor includes a plurality of nanofibers whose electrical impedance varies upon exposure to the chemical species, a substrate supporting and electrically isolating the fibers, a set of electrodes connected to the plurality of fibers at spatially separated points to permit the electrical impedance of the plurality of fibers to be measured, and a membrane encasing the fibers and having a thickness ranging from 50 μm to 5.0 mm. The system includes the chemical sensor, an impedance measuring device coupled to the electrodes and configured to determine an electrical impedance of the plurality of fibers, and an analyzer configured to identify the chemical species based on a change in the electrical impedance. The method measures at least one change in an electrical impedance between spatially separated electrodes connected to a plurality of fibers upon exposure of the fibers to the chemical species, and identifies the chemical species based on the measured change in the electrical impedance.
Abstract:
A photodetector includes one or more photodiodes and a signal processing circuit. Each photodiode includes a transparent first electrode, a second electrode, and a heterojunction interposed between the first electrode and the second electrode. Each heterojunction includes a quantum dot layer and a fullerene layer disposed directly on the quantum dot layer. The signal processing circuit is in signal communication each the second electrode. The photodetector may be responsive to wavelengths in the infrared, visible, and/or ultraviolet ranges. The quantum dot layer may be treated with a chemistry that increases the charge carrier mobility of the quantum dot layer.
Abstract:
Provided herein are compounds and methods of preparation of compounds that are capable of functioning as agonists or antagonists of a nicotinic receptor. Also provided are pharmaceutical compositions comprising one or more of these compounds, which may further comprise one or more additional therapeutic agents. Further provided are methods of treatment of various conditions that may be responsive to such activity at the nicotinic receptors, such as nicotine dependence.
Abstract:
Computer-implemented methods and computer-readable media are disclosed for processing call-for-service data to facilitate queries and reports to enhance usefulness of call-for-service data. In one embodiment, a computer-implemented method performable by a computer system includes receiving at a computer system data for a plurality of calls-for-service. Individual data for an individual call-for-service includes one or more fields storing information relating to the call-for-service. Based on the information stored within the one or more fields of the individual data, one or more supplemental classifiers are automatically identified. The one or more supplemental classifiers are associated with the individual data. The one or more supplemental classifiers associated with the individual data enable the individual call-for-service to be identified when the one or more supplemental classifiers match one or more specified criteria.
Abstract:
A gas storage module includes a two-dimensional body and a heat exchanging structure. The body includes a packed adsorbent having a composition and porosity effective for adsorbing a gas such as methane. The body may be self-supporting or encapsulated in a porous support structure. The body includes gas flow channels. Several modules may be stacked together and provided in a storage tank.
Abstract:
A heat transfer system and related method of heat transfer is provided. The heat transfer system includes a tubular receiver positioned to receive heat from a heat source, the receiver comprising one or more enclosed tubes configured for gravity-driven flow of a particulate heat transfer fluid therethrough in a dense, unfluidized state having a particle volume fraction of at least about 25%; and at least one storage vessel in fluid communication with the tubular receiver and positioned to receive the heat transfer fluid therefrom, wherein the particulate heat transfer fluid includes a plurality of particles of a metal-containing material having a melting point of greater than 800 C, the heat transfer fluid being substantially free of a liquid component.
Abstract:
A filtration device including a base filtration material having openings for fluid flow there through and a filtration medium. The filtration medium includes a plurality of patterned nanofibers formed on the base filtration material. The filtration medium has a figure of merit greater than 30 kPa−1, where the figure of merit is given by −Log (Pt)/ΔP, where Pt is the fractional penetration of a specific aerosol particle diameter and ΔP is a pressure drop across the filtration medium corresponding to a face velocity of 5.3 cm/s and particle size of 0.3 microns.
Abstract:
An electronic device includes a substrate including a front side, a back side, a thickness between the front side and back side, one or more front-side vias extending from the front side into a part of the thickness, and an interconnect via extending from the back side toward the front side; a contact pad on the front side and including one or more protrusions extending through corresponding front-side vias and into the interconnect via; and an interconnect extending through the interconnect via and into contact with the protrusion(s).