Abstract: A seal assembly for a rotary machine, such as a turbine engine, may include a seal rotor comprising a rotor face, a seal slider comprising a slider face, a seal stator, wherein the seal slider is slidably coupled to the seal stator, and wherein the slider face and the rotor face define a primary seal. The seal slider may be configured to slidably engage and retract the slider face with respect to the rotor face. The seal assembly may further include a secondary seal disposed between the seal slider and the seal stator. The secondary seal may be configured to compress and rebound and/or to expand and rebound, over at least a portion of a range of motion of the seal slider.

Abstract: A stator core is provided that can define a plurality of core slots in a surface thereof. The core slots can extend between a first and a second end portion of the stator core. A winding can be housed in the core slots. The winding can define a channel through at least a portion thereof. A cooling system can be operably coupled with the channel and can be configured to move a cooling fluid through the channel. A turbulator can be positioned within the channel. The turbulator can be within a flowpath of the cooling fluid and can be integrally formed with the winding.

Abstract: A stator core is provided that can define a plurality of core slots in a surface thereof. The core slots can extend between a first and a second end portion of the stator core. A winding can be housed in the core slots. The winding can define a channel through at least a portion thereof. A cooling system can be operably coupled with the channel and can be configured to move a cooling fluid through the channel. A turbulator can be positioned within the channel. The turbulator can be within a flowpath of the cooling fluid and can be integrally formed with the winding.

Abstract: A stator core is provided that can define a plurality of core slots in a surface thereof. The core slots can extend between a first and a second end portion of the stator core. A winding can be housed in the core slots. The winding can define a channel through at least a portion thereof. A cooling system can be operably coupled with the channel and can be configured to move a cooling fluid through the channel. A turbulator can be positioned within the channel. The turbulator can be within a flowpath of the cooling fluid and can be integrally formed with the winding.

Abstract: System and method of diagnosis of incidents and provision of technical support in a communication service which gathers information both from the user and from previous incidents whose information is stored in a database, and provides an identification of the problem, as well as a solution if possible, by dynamically determining data about the incident and requesting information according to the data.

Abstract: A method for making a weak cation-exchange (carboxylic acid) medium comprising contacting a solution of a functional organic polymer having carbon to carbon double bond unsaturation and having weak cationic exchange functional moieties or precursors thereof in a solvent with a substrate having an organic polymer surface, evaporating said solvent and breaking said double bond under conditions to cause the functional organic polymer to covalently bond to the substrate surface and to cross-link to form a cross-linked functional polymer layer covalently bound to the substrate surface. The medium produced by the method.

Abstract: A method for making a weak cation-exchange (carboxylic acid) medium comprising contacting a solution of a functional organic polymer having carbon to carbon double bond unsaturation and having weak cationic exchange functional moieties or precursors thereof in a solvent with a substrate having an organic polymer surface, evaporating said solvent and breaking said double bond under conditions to cause the functional organic polymer to covalently bond to the substrate surface and to cross-link to form a cross-linked functional polymer layer covalently bound to the substrate surface. The medium produced by the method.

Abstract: In accordance with the present invention, an improved bifunctional cation-exchange composition has been formed which comprises synthetic resin support particles and both crown ether and non-crown ether functional groups attached thereto. The compositions of the present invention provide for novel, enhanced cation separation capabilities and, depending upon the type of functional groups employed, permit effective separation of cations which elute at approximately the same time off standard and commonly used cation-exchange columns. The presently described bifunctional cation-exchange compositions also permit the effective separation of one cation from a mixture comprising another cation that is present at a significantly greater concentration. Formed articles and methods employing the bifunctional cation-exchange composition are also provided.

Abstract: In accordance with the present invention, an improved bifunctional cation-exchange composition has been formed which comprises synthetic resin support particles and both crown ether and non-crown ether functional groups attached thereto. The compositions of the present invention provide for novel, enhanced cation separation capabilities and, depending upon the type of functional groups employed, permit effective separation of cations which elute at approximately the same time off standard and commonly used cation-exchange columns. The presently described bifunctional cation-exchange compositions also permit the effective separation of one cation from a mixture comprising another cation that is present at a significantly greater concentration. Formed articles and methods employing the bifunctional cation-exchange composition are also provided.

Abstract: An ion chromatographic apparatus and method for on-column preconcentration of trace ionic contaminants for quantitative trace analysis by ion chromatography. The method includes the multi-cycle, sequential steps of loading and purging of sample solution into and out of a sample injection loop to cumulatively preconcentrate a separator column with a cumulative amount of sample. Each purging step includes directing pressurized liquid, at a substantially constant rate and for a predetermined period of time to the sample injection loop, to drive up to about 98% of the known volume of the sample solution from the sample injection loop. In turn, this flushed volume of sample solution passes through an ion exchange resin column for concentration of the trace ionic contaminants in the resin.

Abstract: An ion chromatographic apparatus and method for on-column preconcentration of trace ionic contaminants for quantitative trace analysis by ion chromatography. The method includes the multi-cycle, sequential steps of loading and purging of sample solution into and out of a sample injection loop to cumulatively preconcentrate a separator column with a cumulative amount of sample. Each purging step includes directing pressurized liquid, at a substantially constant rate and for a predetermined period of time to the sample injection loop, to drive up to about 98% of the known volume of the sample solution from the sample injection loop. In turn, this flushed volume of sample solution passes through an ion exchange resin column for concentration of the trace ionic contaminants in the resin.

Abstract: X-ray fluorescence spectrometer for determining the sulfur content of oil and other matrices, and method of calibrating the same. The spectrometer comprises a pulse height analyzer and a computer for analyzing the energy spectrum of photons emitted by a sample in regions corresponding to the energy levels of photons emitted by sulfur and the target line x-rays scattered by the sample. The windows through which the energy is sampled are adjusted to provide a calibration curve of predetermined shape, and a built-in standard is analyzed and a value corresponding to the ratio of the relative intensities of the fluorescent energy from the standard and the scattered target line x-ray radiation is stored during initial calibration of the system. Thereafter, the system is recalibrated simply by analyzing the build-in standard again, adjusting the sampling windows, and adjusting a constant in the relationship by which the sulfur content is determined to compensate for drift in the system.