Abstract: A drum dampening device includes a base positionable adjacent the drum wires on the drum and an elongate, rigid bar operatively coupled to the base. An actuator is operatively coupled to the elongate, rigid bar and selectively transitional relative to the base between a first position and a second position. The transition of the actuator from the first position toward the second position causes at least a portion of the elongate, rigid bar to move away from the base and into contact with at least one of the drum wires, and the transition of the actuator from the second position toward the first position causes at least a portion of the elongate, rigid bar to move toward the base out of contact with the at least one of the drum wires.

Abstract: An electronic messaging system includes a memory operable to store one or more modules and a processor operably coupled to the memory. The processor is operable to execute the one or more modules to receive an electronic message package that includes a message from a sender associated with a first communication device, an indication of an intended recipient, a condition for when the message is to be viewable by the intended recipient, and a teaser that can be immediately viewable by the at least one intended recipient. The processor is also operable to execute the one or more modules to initiate delivery of the message at a second communication device associated with the intended recipient so that the message is viewable by the intended recipient only when the condition has been met while the teaser is immediately viewable by the at least one intended recipient.

Abstract: A drum dampening device includes a foam pad adapted to be selectively engageable with drum wires on the drum. The foam pad is configured to dampen vibrations of the drum wires when the foam pad is engaged with the drum wires. A support plate is coupled to the foam pad, and a base plate is coupled to the support plate. An adjustment lever is coupled to the support plate and the base plate. The adjustment lever is selectively transitional between a first position and a second position, with transition of the adjustment lever from the first position toward the second position causing at least a portion of the support plate to move away from the base plate resulting in engagement of the foam pad with the drum wires.

Abstract: A photovoltaic cell can include a dopant in contact with a semiconductor layer.

Abstract: A drum dampening device includes a foam pad adapted to be selectively engageable with drum wires on the drum. The foam pad is configured to dampen vibrations of the drum wires when the foam pad is engaged with the drum wires. A support plate is coupled to the foam pad, and a base plate is coupled to the support plate. An adjustment lever is coupled to the support plate and the base plate. The adjustment lever is selectively transitional between a first position and a second position, with transition of the adjustment lever from the first position toward the second position causing at least a portion of the support plate to move away from the base plate resulting in engagement of the foam pad with the drum wires.

Abstract: A drum dampening device includes a foam pad adapted to be selectively engageable with drum wires on the drum. The foam pad is configured to dampen vibrations of the drum wires when the foam pad is engaged with the drum wires. A support plate is coupled to the foam pad, and a base plate is coupled to the support plate. An adjustment lever is coupled to the support plate and the base plate. The adjustment lever is selectively transitional between a first position and a second position, with transition of the adjustment lever from the first position toward the second position causing at least a portion of the support plate to move away from the base plate resulting in engagement of the foam pad with the drum wires.

Abstract: A photovoltaic cell can include a dopant in contact with a semiconductor layer.

Abstract: A drum dampening device includes a foam pad adapted to be selectively engageable with drum wires on the drum. The foam pad is configured to dampen vibrations of the drum wires when the foam pad is engaged with the drum wires. A support plate is coupled to the foam pad, and a base plate is coupled to the support plate. An adjustment lever is coupled to the support plate and the base plate. The adjustment lever is selectively transitional between a first position and a second position, with transition of the adjustment lever from the first position toward the second position causing at least a portion of the support plate to move away from the base plate resulting in engagement of the foam pad with the drum wires.

Abstract: A bioreactor including one or more features that improve bioreactor liquid infiltration and gas recovery including a porous material layer having a layer of first porous material including a trench, a second porous material located in the trench and extending beyond the top surface of the layer of first porous material and perforated gas recovery piping located in the second porous material.

Abstract: A bioreactor including one or more features that improve bioreactor liquid infiltration and gas recovery including a porous material layer having a layer of first porous material including a trench, a second porous material located in the trench and extending beyond the top surface of the layer of first porous material and perforated gas recovery piping located in the second porous material.

Abstract: A landfill and method for constructing a landfill including a plurality of waste layers, each waste layer separated by highly permeable material layer and at least one vertical gas extraction well having a perforated casing the penetrates at least one of the highly permeable material layers.

Abstract: A concentrator having a first surface, a second surface, and a concentrating surface disposed between the first surface and the second surface, the concentrating surface having a first profile which effects concentration of incident radiation at the first surface on to the second surface.

Abstract: Among other things, calibration of a signal processing system is disclosed to minimize vector mismatch between signals frequency-translated from an RF signal and conveyed along a plurality of signal paths of the signal processing system. A calibration signal having a plurality of tones is coupled to the signal processing system such that it is frequency translated. The frequency-translated calibration signal is sampled along a first signal path of the signal processing system to obtain a first set of observed samples. It is also sampled along a second signal path of the system to obtain a second set of observed samples. The first set of observed samples is filtered with an adaptive filter having a set of adaptable coefficients to obtain a set of filtered samples. The coefficients are adapted to minimize undesired deviations between the set of filtered samples and the second set of observed samples.

Abstract: A combination of dried sea weed, preferably irish moss (chondrus crispus) and psyllium (plantago ovata, plantago psyllium) is administered to a person or domestic animal in a daily dose which in its broadest range comprises 58 miligram (mg) to 4.6 gram (g) of sea weed and 250 mg to 24 g of psyllium for the purpose of allowing the stool to make a clean exit from the body thereby eliminating or reducing residual fecal matter that adheres to the perianal area after the bowel movements of the person or domestic animal.

Abstract: An optical wireless communication receiver comprises a dielectric totally internally reflecting concentrator (DTIRC) (1) having a convexly curved receiving surface (2) for receiving incident radiation over a wide field-of-view and a concavely curved side surface (3) from which radiation passing through the receiving surface is totally internally reflected towards a detection surface (4). A narrowband optical filter (6) is provided for filtering the radiation before it reaches the detection surface (4), and a photodetector serves to detect the radiation reaching the detection surface (4) and to provide an electrical output signal indicative of the radiation detected. Such an arrangement offer higher concentration and allows the use of small photodetectors which reduces the capacitance and the cost and improves receiver sensitivity.

Abstract: A mobile telephone antenna 49 comprises an electrically insulating substrate 2 which is L-shaped in cross-section, and a driven element 3 formed by an outer electrically conductive layer applied to an inner surface of the substrate 2 and an inner electrically conductive layer 5 applied to the substrate 2 and spaced from the outer layer by an insulating gap. The gap extends to a transmitting edge of the antenna 1 such that two portions of the outer layer are spaced from a portion of the inner layer 5 along the edge by two insulating portions of the substrate 2. The antenna 49 also incorporated an impedance-correcting secondary antenna part 50 comprising an electrically conductive element extending upwardly from the inner layer 5 and constituting an inductive element which is tuned to the frequency of the transmitted radiation.

Abstract: Landfills including multiple lifts having horizontal piping layers and methods for their use to accelerate anaerobic and/or aerobic degradation of municipal solid waste to increase landfill capacity.