Abstract: A sealing unit for a drive shaft driving a working fluid; the sealing unit comprising a sleeve attached to the drive shaft and a gland attached to the housing, a static seal ring attached to the gland and in close proximity to the sleeve, and a stuffing box about the static seal ring, fibrous packing seal blocking the distal and proximal ends of the stuffing box and a first sealant comprising a viscous, non-Newtonian fluid that is injected into the stuffing box under a first pressure exceeding the pressure of the working fluid; the sealing unit further comprising an inner fluid seal of a Newtonian fluid between the first sealant and the drive shaft upstream of the first sealant, such that the Newtonian fluid seal is kept at a pressure slightly higher than the pressure of the working fluid and prevents the working fluid from reaching the first sealant.

Abstract: The present invention relates generally to a slope spectroscopy standards and methods of making slope spectroscopy standards, specifically standards and methods of developing standards specifically for variable pathlength (slope) measurements.

Abstract: A device such a coil where each components of the electrical structures are completely encapsulated by a magnetic material in a manner that all the magnetic field generated makes a closed loop through a core, amplified and oriented in wished direction. The coil using this manufacturing method is destined to stators, rotors for axial, radial rotating or linear electric motors, transformers and all devices that generate a magnetic field (non-exhaustive list).

Abstract: This disclosure relates generally to a sampling device, and more particularly, a sampling device that facilitates spectroscopic measurements with a variable path length and the necessary software controlled algorithms and methods for such a device.

Abstract: A high temperature film substrate having a seal material printed thereon in a predefined pattern. The film comprises a pliable high melt temperature substrate and a heat-seal material selectively coated onto the substrate only in an area predetermined to be heat sealed together. Also disclosed is a heat-sealed pouch comprising a pliable high melt temperature substrate and a heat-seal material selectively coated onto the substrate only in a heat sealed area.

Abstract: The present invention relates to an apparatus for driving a light emitting diode. The apparatus for driving the light emitting diode according to the present invention comprises a rectifier circuit for accessing an Alternating Current (AC) voltage source to rectify an AC voltage of the AC voltage source, a light emitting diode array connected to an output side of the rectifier circuit and including a plurality of light emitting diode array blocks, and a charging/discharging circuit configured to be charged by a voltage output from the rectifier circuit, wherein the apparatus for driving the light emitting diode comprises a discharging switch, a block switch circuit, and a controller.

Abstract: The present invention relates to methods of spectrophotometric determination of the presence of particular substances in a complex mixture of compounds. This invention relates to methods for determining the concentration of various components of complex biological samples including the determination of the concentration of polyoxyethylene containing compounds including polysorbate in protein containing samples as well as determining the ratio of drug to antibody ratios in antibody-drug conjugate solutions.

Abstract: The present invention relates to an apparatus for driving a light emitting diode. The apparatus for driving the light emitting diode according to the present invention comprises a rectifier circuit for accessing an Alternating Current (AC) voltage source to rectify an AC voltage of the AC voltage source, a light emitting diode array connected to an output side of the rectifier circuit and including a plurality of light emitting diode array blocks, and a charging/discharging circuit configured to be charged by a voltage output from the rectifier circuit, wherein the apparatus for driving the light emitting diode comprises a discharging switch, a block switch circuit, and a controller.

Abstract: The present invention relates to a power supply circuit, and more particularly to a power supply circuit for increasing the flickering frequency of a light-emitting diode by means of a charging/discharging circuit and a switch connected between an alternating voltage source and a load.

Abstract: A high temperature film substrate having a seal material printed thereon in a predefined pattern. The film comprises a pliable high melt temperature substrate and a heat-seal material selectively coated onto the substrate only in an area predetermined to be heat sealed together. Also disclosed is a heat-sealed pouch comprising a pliable high melt temperature substrate and a heat-seal material selectively coated onto the substrate only in a heat sealed area.

Abstract: This disclosure relates generally to a sampling device, and more particularly, a sampling device that facilitates spectroscopic measurements with a variable path length and the necessary software controlled algorithms and methods for such a device.

Abstract: A frequency up and down converter, in which, when down converting a high frequency signal into an intermediate frequency signal or up converting an intermediate frequency signal into a high frequency signal by controlling switching elements using a local oscillator signal, a signal with a frequency to be converted is controlled a number of times during one cycle of the local oscillator signal, whereby the local oscillator signal with a frequency lower than an original frequency may be used. Transistors are added in parallel to switching transistors disposed in a frequency down conversion unit or a frequency up conversion unit, and local oscillator signals with predetermined phases and pulse widths are provided to the gates of the transistors such that a high frequency signal or an intermediate frequency signal is transferred to an output terminal at least two times during one cycle of a local oscillator signal.

Abstract: Apparatus and method for motion tracking, including a hand-held device including at least one accelerometer providing an acceleration indicating output and computation circuitry adapted to employ the acceleration indicating output for generating tracking output indication.

Abstract: The method and system for methane separation and purification from a biogas includes collecting a raw Biogas gas stream having methane, carbon dioxide, water, sulfur compounds and non-methane organic compound (NMOC) constituents. The Biogas stream is fed into the intake of a liquid sulfur scrubber or a sulfur adsorber unit where the Biogas is separated into a main gas stream routed downstream in the system and a sulfur compounds stream removed from the system. The main gas stream is then processed by an NMOC absorber and further downstream, by an NMOC adsorber. NMOC produced by both NMOC processes is liquefied, removed from the system and stored. Upstream from the NMOC processes, the main gas stream is processed by at least one CO2, N2, O2 gas separation unit that produces a usable product stream of enriched methane gas, and an off-gas stream, which a VPSAU processes for venting and recycling.

Abstract: This disclosure relates generally to a sampling device, and more particularly, a sampling device that facilitates spectroscopic measurements with a variable path length and the necessary software controlled algorithms and methods for such a device.

Abstract: In a process for producing ammonia from urea which process comprises: (a) heating a liquid phase reaction medium comprising an aqueous solution of urea, or a mixture of urea, containing biuret or ammonium carbamate on site, in a hydrolysis reactor such that a pressurized gaseous ammonia and carbon dioxide-containing product is obtained which is essentially free of urea, biuret, or ammonium carbamate; (b) separating the gaseous ammonia and carbon dioxide-containing product from the liquid phase reaction medium at the prevailing pressure; (c) retaining the liquid phase reaction medium in the reactor for further conversion to gaseous ammonia and carbon dioxide, and/or recycling at least a portion of the said reaction medium back into the reactor, a urea dissolver, or feed solution to the reactor for further conversion; and (d) withdrawing the gaseous ammonia and carbon dioxide-containing product separated in step (b) at a controlled rate to meet varying ammonia demand requirements; the improvement wherein th

Abstract: A delivery unit (40) for automatically delivering a viscous sealant at a predetermined pressure to a stuffing box (70) of a shaft (20) is disclosed. The delivery unit (40), such as a pressure booster incrementally displaceable piston, is controlled to deliver the sealant at a predetermined pressure on demand when the pressure of the sealant within said stuffing box is less than the predetermined delivery pressure being sufficient to promote adhesion of the sealant onto a shaft segment and to thereby prevent or retard the egress of working fluid from a corresponding working chamber (17) of a machine adapte to perform work by the shaft. A system for reducing the pressure of sealant within a stuffing box by use of the delivery unit and of an impeller-based dynamic seal is also disclosed.

Abstract: This disclosure relates generally to a sampling device, and more particularly, a sampling device that facilitates spectroscopic measurements with a variable path length and the necessary software controlled algorithms and methods for such a device.

Abstract: A USB based ExpressCard device having a dimension equal to a standard ExpressCard is disclosed to include an ExpressCard having a circuit board accommodated in an electrically insulative bracket and surrounded by a top cover shell and a bottom cover shell, and a USB3.0 connector mounted in an opening in a front locating shell of the electrically insulative bracket of the ExpressCard and having the rear bonding portions of first and second conducting terminals thereof respectively bonded to respective contacts at the circuit board by SMT (surface mounting technology).