Abstract: A pipe coupling has two segments with lugs adapted to receive adjustable fasteners to draw the segments together to join pipe elements. Each lug has an inner surface and a stop surface in spaced relationship. The stop surfaces on corresponding lugs contact each other when the adjustable fasteners are tightened.

Abstract: A pulse generator is disclosed. The pulse generator includes a DC source; a plurality of switches, a transformer; and a pulsing output. The pulse generator can be coupled with a plasma chamber. The pulsing output outputs high voltage pulses having a peak-to-peak voltage greater than 1 kV and a voltage portion between consecutive high voltage bipolar pulses that has a negative slope that substantially offsets the voltage reduction on a wafer within a plasma chamber due to an ion current. The resulting voltage at the wafer may be substantially flat between consecutive pulses.

Abstract: A drift eliminator is provided that includes a plurality of blades interleaved by a plurality of spacers. Each spacer has a first leg, a second leg, and a support strip, each of the first and second legs including an upper edge and a lower edge, with the support strip extending laterally from the upper edge of the first leg to the upper edge of the second leg. Each blade includes at least one portion having a plurality of alignment slots formed therein, the plurality of alignment slots extending from an upper surface of the blade portion to a lower surface of the blade portion. Each spacer includes a plurality of alignment tabs extending from the first leg and the second leg, each of the plurality of alignment tabs interfiting with a corresponding one of the plurality of alignment slots in the at least one first blade portion.

Abstract: A disposable sensor cap (100) configured to attach to a cell culture device comprises a plurality of sensors for measuring cell culture media conditions. For example, the plurality of sensors (180) may measure dissolved gases and essential molecules of choice without the risk of contamination of the vessel. The sensors may be integrated in a body (150) of the sensor cap. During the measurement period, a small volume of cell culture media may be captured in a sampling chamber of the sensor cap when the cell culture vessel is tipped. An inductor coil (160) on the sensor cap allows for noninvasive wireless reading of the measurements.

Abstract: A drift eliminator is provided that includes a plurality of blades interleaved by a plurality of spacers. Each spacer has a first leg, a second leg, and a support strip, each of the first and second legs including an upper edge and a lower edge, with the support strip extending laterally from the upper edge of the first leg to the upper edge of the second leg. Each blade includes at least one portion having a plurality of alignment slots formed therein, the plurality of alignment slots extending from an upper surface of the blade portion to a lower surface of the blade portion. Each spacer includes a plurality of alignment tabs extending from the first leg and the second leg, each of the plurality of alignment tabs interfiting with a corresponding one of the plurality of alignment slots in the at least one first blade portion.

Abstract: A pulse generator is disclosed. The pulse generator includes a DC source; a plurality of switches, a transformer; and a pulsing output. The pulse generator can be coupled with a plasma chamber. The pulsing output outputs high voltage pulses having a peak-to-peak voltage greater than 1 kV and a voltage portion between consecutive high voltage bipolar pulses that has a negative slope that substantially offsets the voltage reduction on a wafer within a plasma chamber due to an ion current. The resulting voltage at the wafer may be substantially flat between consecutive pulses.

Abstract: In some embodiments, a high voltage power supply is disclosed that provides a plurality of high voltage pulses without any voltage droop between two subsequent pulses. In some embodiments, a high voltage power supply is disclosed that provides a waveform of voltage versus time having a plurality of high voltage pulses having a voltage greater than 1 kV and with a substantially flat portion between pulse. In some embodiments, a high voltage power supply is disclosed that includes a snubber with a snubber resistor having a resistance of about 7.5 m?1.25?; and a snubber capacitor having a capacitance of about 2 ?F-35 ?F.

Abstract: Described herein are various embodiments for liquid crystal elastomers (LCE) formed from liquid crystalline monomers having 4-(6-(acryloyloxy)n-oxy)phenyl-4-(6-(acryloyloxy)m-oxy)benzoate (CnBAPE) as the mesogenic core. The LCEs described herein have improved thermotropic characteristics, including lower thermotropic activation temperatures. The LCEs described herein may also incorporate azobenzene to thereby also enhance the phototropic properties of the LCE.

Abstract: Ultrasonic devices comprise a housing comprising an ultrasonic surface, an ultrasonic transducer, and an ultrasonic horn to provide and focus energy from the ultrasonic transducer to the ultrasonic surface. Methods of removing trapped air bubbles from a cell culture container comprise positioning a cell culture container comprising air bubbles trapped in liquid within microcavity wells of the cell culture container at an ultrasonic surface of an ultrasonic device. Mechanical agitation is generated by the ultrasonic device and applied to the cell culture container to remove the trapped air bubbles from the microcavity wells. Methods of releasing cell aggregates from a cell culture container comprising positioning a cell culture container comprising cell aggregates in microcavity wells at an ultrasonic surface of an ultrasonic device. The cell aggregates are released from the microcavity wells by applying mechanical agitation from the ultrasonic device to a surface of the cell culture container.

Abstract: A nanosecond pulser system is disclosed. In some embodiments, the nanosecond pulser system may include a high voltage power supply; a nanosecond pulser electrically coupled with the high voltage power supply and switches voltage from the high voltage power supply at high frequencies; a transformer having a primary side and a secondary side, the nanosecond pulser electrically coupled with the primary side of the transformer; and an output electrically coupled with the transformer producing a waveform. In some embodiments, the waveform includes a plurality of high voltage pulses having a pulse amplitude greater than about 2 kV, a pulse width, and a pulse repetition frequency; and a sinusoidal waveform having a waveform frequency and a waveform amplitude greater than 100 V.

Abstract: A splash bar for mounting to a splash bar hanger in a cooling tower includes a first leg defining a longitudinal axis of the splash bar and openings defined through the first leg. The first leg having an outer surface. The outer surface including surface features thereon. The surface features extending at least one of at an acute angle and generally perpendicularly relative to the longitudinal axis. The surface features designed and configured to promote droplet and cooling medium jet formation during operation of the cooling tower.

Abstract: Some embodiments include a pulsing power supply comprising a power supply and a transformer comprising: a transformer core; a primary winding wrapped around a portion of the transformer core, the primary winding having a first lead and a second lead; and a secondary winding wrapped around a portion of the transformer core. The pulsing power supply may also include a first switch electrically connected with the first lead of the primary winding and the power supply; and a second switch electrically connected with the second lead of the primary winding and the power supply, wherein the first switch and the second switch are opened and closed at different time intervals. The pulsing power supply may also include a pulsing output electrically coupled with the secondary winding of the transformer that outputs pulses having a voltage greater than about 2 kV and with pulse frequencies greater than 1 kHz.

Abstract: A cleaning system for a mass transfer or cooling tower device having an enclosure, an air inlet and an air outlet in the enclosure, and first and second fill packs in the enclosure positioned between the air inlet and the air outlet. The first and second fill packs have peripheries that are positioned proximate to internal walls of the enclosure. The cleaning system includes an inlet connection mounted to the enclosure and a delivery piping system connected to the inlet connection. The delivery piping system includes a cleaning portion positioned within the enclosure between the first and second fill packs. The cleaning portion includes nozzles configured to direct a cleaning fluid onto the first and second fill packs.

Abstract: In some embodiments, a high voltage power supply is disclosed that provides a plurality of high voltage pulses without any voltage droop between two subsequent pulses. In some embodiments, a high voltage power supply is disclosed that provides a waveform of voltage versus time having a plurality of high voltage pulses having a voltage greater than 1 kV and with a substantially flat portion between pulse. In some embodiments, a high voltage power supply is disclosed that includes a snubber with a snubber resistor having a resistance of about 7.5 m?1.25?; and a snubber capacitor having a capacitance of about 2 ?F-35 ?F.

Abstract: In some embodiments, a high voltage power supply is disclosed that provides a plurality of high voltage pulses without any voltage droop between two subsequent pulses. In some embodiments, a high voltage power supply is disclosed that provides a waveform of voltage versus time having a plurality of high voltage pulses having a voltage greater than 1 kV and with a substantially flat portion between pulse. In some embodiments, a high voltage power supply is disclosed that includes a snubber with a snubber resistor having a resistance of about 7.5 m?-1.25?; and a snubber capacitor having a capacitance of about 2 ?F-35 ?F.

Abstract: A splash bar for mounting to a splash bar hanger in a cooling tower includes a first leg defining a longitudinal axis of the splash bar and openings defined through the first leg. The first leg having an outer surface. The outer surface including surface features thereon. The surface features extending at least one of at an acute angle and generally perpendicularly relative to the longitudinal axis. The surface features designed and configured to promote droplet and cooling medium jet formation during operation of the cooling tower.

Abstract: A cooling tower splash bar hanger assembly includes a grid comprised of a plurality of wires, including vertical and horizontal wires, defining a plurality of slots. The plurality of vertical wires includes a first vertical wire and a second vertical wire. The plurality of slots includes a first slot. The first slot defines a first slot width. A first splash bar defines a first bar width and is configured for positioning in the first slot supported by one of the plurality of horizontal wires. A second splash bar defines a second bar width. The second splash bar is supported by the one of the plurality of horizontal wires. The first slot width is greater than the first bar width and the second bar width. The first slot width and the first bar width define a size ratio of approximately two to one or greater than two to one.

Abstract: A cooling tower splash bar hanger assembly includes a grid comprised of a plurality of wires, including vertical and horizontal wires, defining a plurality of slots. The plurality of vertical wires includes a first vertical wire and a second vertical wire. The plurality of slots includes a first slot. The first slot defines a first slot width. A first splash bar defines a first bar width and is configured for positioning in the first slot supported by one of the plurality of horizontal wires. A second splash bar defines a second bar width. The second splash bar is supported by the one of the plurality of horizontal wires. The first slot width is greater than the first bar width and the second bar width. The first slot width and the first bar width define a size ratio of approximately two to one or greater than two to one.

Abstract: A pulse generator is disclosed. The pulse generator includes a DC source; a plurality of switches, a transformer; and a pulsing output. The pulse generator can be coupled with a plasma chamber. The pulsing output outputs high voltage pulses having a peak-to-peak voltage greater than 1 kV and a voltage portion between consecutive high voltage bipolar pulses that has a negative slope that substantially offsets the voltage reduction on a wafer within a plasma chamber due to an ion current. The resulting voltage at the wafer may be substantially flat between consecutive pulses.

Abstract: In some embodiments, a high voltage power supply is disclosed that provides a plurality of high voltage pulses without any voltage droop between two subsequent pulses. In some embodiments, a high voltage power supply is disclosed that provides a waveform of voltage versus time having a plurality of high voltage pulses having a voltage greater than 1 kV and with a substantially flat portion between pulse. In some embodiments, a high voltage power supply is disclosed that includes a snubber with a snubber resistor having a resistance of about 7.5 m?-1.25?; and a snubber capacitor having a capacitance of about 2 ?F-35 ?F.