Abstract: A catheter configured to dynamically compensate for the impact of internal and external forces that act upon the catheter during use is disclosed. The catheter may include sensors configured to measure received forces on control cables that extend within the catheter. A controller, coupled to the sensors, may record received force measurements associated with a working position of a distal end of the catheter. The controller may monitor subsequently received forces to identify force variances that may deflect the distal end of the catheter from its working position and may apply a driving force to one or more of the control cables to minimize the force variances. Monitoring received forces during use and applying compensating drive forces may reduce deflection of the distal end of the catheter, increasing the accuracy and precision of an annuloplasty procedure while minimizing potential damage to cardiac tissue.

Abstract: The present disclosure relates generally to the field of medical devices for treating heart disease. In particular, the present disclosure relates to medical devices, systems, and methods for delivering artificial chordae tendineae in a patient. A system for delivering a chordae tendineae into a heart may include a delivery catheter. A clamp catheter may be configured to translate through the delivery catheter. A spreader may be disposed on the clamp catheter. A first clamp may be at least partially contained in the spreader in a closed configuration and may be attached to the chordae tendineae. An anchor catheter may be configured to translate through the delivery catheter and may have an anchor attached to the chordae tendineae. A sheath may be extended over the anchor catheter and anchor and may be configured to restrain an arm of the anchor.

Abstract: A surface enhanced luminescence (SELS) sensor may include a substrate and nano fingers projecting from the substrate. Each of the nano fingers may include a polymer pillar having a sidewall and a top, a coating layer covering the sidewall and a metal cap supported by and in contact with the top of the pillar.

Abstract: In one example In accordance with the present disclosure, a fluid ejection device is described. The fluid ejection device Includes a number of nozzles to eject fluid. Each nozzle Includes multiple firing chambers to hold fluid. The multiple firing chambers are separated: by a chamber partition. Each nozzle also includes a shared nozzle orifice in a substrate through which to dispense fluid. Each nozzle also Includes multiple ejectors, at least one ejector disposed in each firing chamber, in a common channel of the nozzle, fluid from the multiple firing chambers Is mixed, A height of the common channel is defined by the substrate and the chamber partition and is less than a width of the shared nozzle orifice.

Abstract: A surface enhanced luminescence (SELS) sensor may include a substrate and nano fingers projecting from the substrate. Each of the nano fingers may include a polymer pillar having a sidewall and a top, a coating layer covering the sidewall and a metal cap supported by and in contact with the top of the pillar.

Abstract: A MW signal is delivered to a waveguide with a coaxial concentrator. At least one of an amplitude and a phase of a reflected signal from the coaxial concentrator is monitored to determine material characteristics of a build material fusion process.

Abstract: The present disclosure is drawn to an amorphous thin metal film coated substrate including a crosslinked polymer substrate and a 10 angstrom nm to 10 ?m amorphous thin metal film applied directly to the crosslinked polymer substrate. The amorphous thin metal film can include from 10 at % to 50 at % of a metalloid, wherein the metalloid is carbon, silicon, boron, or a mixture thereof. The film can also include from 5 at % to 70 at % of a first metal and 5 at % to 70 at % of a second metal. The first and the second metal can be, independently, titanium, vanadium, chromium, iron, cobalt, nickel, zirconium, niobium, molybdenum, ruthenium, rhodium, palladium, hafnium, tantalum, tungsten, osmium, iridium, or platinum. The first metal and the second metal can also be from different periods of the periodic table of elements.

Abstract: In an example implementation, a method of producing a three-dimensional (3D) object includes patterning an unfused 3D object within a work area of a printing platform and stabilizing the unfused 3D object for removal from the work area.

Abstract: A process for producing a methane-containing gas mixture includes the steps of: (i) passing a first feed gas mixture including hydrogen and carbon dioxide through a bed of methanation catalyst to react a portion of the hydrogen with at least a portion of the carbon dioxide and form a methane-containing gas mixture containing residual hydrogen, (ii) adding an oxygen-containing gas to the methane-containing gas mixture containing residual hydrogen to form a second feed gas mixture, and (iii) passing the second feed gas mixture through a bed of an oxidation catalyst to react the residual hydrogen and oxygen to form a hydrogen depleted methane-containing gas mixture.

Abstract: A process for producing a methane-containing gas mixture includes the steps of: (i) passing a first feed gas mixture including hydrogen and carbon dioxide through a bed of methanation catalyst to react a portion of the hydrogen with at least a portion of the carbon dioxide and form a methane-containing gas mixture containing residual hydrogen, (ii) adding an oxygen-containing gas to the methane-containing gas mixture containing residual hydrogen to form a second feed gas mixture, and (iii) passing the second feed gas mixture through a bed of an oxidation catalyst to react the residual hydrogen and oxygen to form a hydrogen depleted methane-containing gas mixture.

Abstract: A process for the conversion of a hydrocarbon to CO2 and electrical power is described which includes subjecting a gas mixture of a hydrocarbon feed stream and steam to an integrated reforming process including stages of steam reforming in a gas-heated reformer and secondary reforming to generate a reformed gas mixture, increasing the hydrogen content of the reformed gas mixture by subjecting it to one or more water-gas-shift stages, cooling the resulting hydrogen-enriched reformed gas and separating condensed water therefrom, passing the resulting de-watered hydrogen-enriched reformed gas to one or more stages of carbon dioxide separation to recover carbon dioxide, combusting the remaining hydrogen-containing fuel stream with an oxygen containing gas in a gas turbine to generate electrical power and passing the exhaust gas mixture from the gas turbine to a heat recovery steam generation system that feeds one or more steam turbines to generate additional electrical power.

Abstract: Process for increasing the hydrogen content of a synthesis gas containing one or more sulphur compounds, the synthesis gas including hydrogen, carbon oxides and steam, and having a ratio defined as R?(H2—C02)/(CO+C02)?0.6 and a steam to carbon monoxide ratio ?1.8, includes the steps of (i) adjusting the temperature of the synthesis gas; (ii) passing at least a portion of the heated synthesis gas adiabatically through a first bed of sulphur-tolerant water-gas shift catalyst disposed in a first shift vessel at a space velocity ?12,500 hour?1 to form a pre-shifted gas stream; and (iii) forming a shifted gas stream by subjecting at least a portion of the pre-shifted gas stream to a second stage of water-gas shift in a second shift vessel containing a second bed of sulphur-tolerant water-gas shift catalyst that is cooled in heat exchange with a gas stream including the synthesis gas.

Abstract: A process for increasing the hydrogen content of a synthesis gas containing one or more sulphur compounds, the synthesis gas including hydrogen, carbon oxides and steam, and having a ratio, R, defined as R=(H2?CO2)/(CO+CO2)?0.6 and a steam to carbon monoxide ratio ?1.8, includes the steps of (i) adjusting the synthesis gas temperature, (ii) passing the temperature-adjusted synthesis gas through an adiabatic pre-shift vessel containing a bed of sulphur-tolerant water-gas shift catalyst at a space velocity ?12,500 hour?1 to form a pre-shifted gas stream, and (iii) subjecting at least a portion of the pre-shifted gas stream to one or more further stages of water-gas shift.

Abstract: Process for increasing the hydrogen content of a synthesis gas containing one or more sulphur compounds, the synthesis gas including hydrogen, carbon oxides and steam, and having a ratio defined as R=(H2?CO2)/(CO+CO2)?0.6 and a steam to carbon monoxide ratio ?1.8, including the steps of (i) heating the synthesis gas; (iii) subjecting at least a portion of the heated synthesis gas to a first stage of water-gas shift in a first shift vessel containing a first sulphur-tolerant water-gas shift catalyst that is cooled in heat exchange with boiling water, to form a pre-shifted gas stream; and (iii) forming a shifted gas stream by subjecting at least a portion of the pre-shifted gas stream to a second stage of water-gas shift in a second shift vessel containing a second sulphur-tolerant water-gas shift catalyst that is cooled in heat exchange with a gas stream including the synthesis gas.

Abstract: Process for synthesizing hydrocarbons includes: reforming a hydrocarbon feedstock containing inert gases in reforming stages to generate a synthesis gas including the inert gases, steam, hydrogen and carbon monoxide; cooling the synthesis gas below the dew point to obtain a dewatered synthesis gas; synthesizing hydrocarbons from the dewatered synthesis gas by the Fischer-Tropsch reaction and separating at least part of the synthesized hydrocarbons, to give a tail gas; subjecting a mixture of at least part of the tail gas and steam to the water-gas shift reaction, to form shifted tail gas having increased hydrogen and carbon dioxide contents; subjecting the shifted tail gas to one or more membrane separation stages thereby generating an inert gas-containing gas mixture and one or more of a hydrogen-, carbon dioxide- and a hydrocarbon-containing gas mixture; and using one or more of the hydrogen-, carbon dioxide- and hydrocarbon-containing gas mixture in a reformer feed stream.

Abstract: A process for reducing the thiophene content in a synthesis gas mixture, comprises the steps of (i) passing a synthesis gas mixture comprising hydrogen and carbon oxides and containing thiophene over a copper-containing sorbent disposed in a sorbent vessel at an inlet temperature in the range 200-280° C., (ii) withdrawing a thiophene depleted synthesis gas containing methanol from the sorbent vessel, and (iii) adjusting the temperature of the methanol-containing thiophene-depleted synthesis gas mixture. The resulting gas mixture may be used for production of chemicals, e.g. methanol production or for the Fischer-Tropsch synthesis of liquid hydrocarbons, for hydrogen production by using water gas shift, or for the production of synthetic natural gas.

Abstract: Process for synthesizing hydrocarbons includes: reforming a hydrocarbon feedstock containing inert gases in reforming stages to generate a synthesis gas including the inert gases, steam, hydrogen and carbon monoxide; cooling the synthesis gas below the dew point to obtain a dewatered synthesis gas; synthesizing hydrocarbons from the dewatered synthesis gas by the Fischer-Tropsch reaction and separating at least part of the synthesized hydrocarbons, to give a tail gas; subjecting a mixture of at least part of the tail gas and steam to the water-gas shift reaction, to form shifted tail gas having increased hydrogen and carbon dioxide contents; subjecting the shifted tail gas to one or more membrane separation stages thereby generating an inert gas-containing gas mixture and one or more of a hydrogen-, carbon dioxide- and a hydrocarbon-containing gas mixture; and using one or more of the hydrogen-, carbon dioxide- and hydrocarbon-containing gas mixture in a reformer feed stream.

Abstract: A process for increasing the hydrogen content of a synthesis gas containing one or more sulphur compounds, the synthesis gas including hydrogen, carbon oxides and steam, and having a ratio, R, defined as R=(H2?CO2)/(CO+CO2)?0.6 and a steam to carbon monoxide ratio ?1.8, includes the steps of (i) adjusting the synthesis gas temperature, (ii) passing the temperature-adjusted synthesis gas through an adiabatic pre-shift vessel containing a bed of sulphur-tolerant water-gas shift catalyst at a space velocity ?12,500 hour?1 to form a pre-shifted gas stream, and (iii) subjecting at least a portion of the pre-shifted gas stream to one or more further stages of water-gas shift.

Abstract: Process for increasing the hydrogen content of a synthesis gas containing one or more sulphur compounds, the synthesis gas including hydrogen, carbon oxides and steam, and having a ratio defined as R?(H2—C02)/(CO+C02)?0.6 and a steam to carbon monoxide ratio ?1.8, includes the steps of (i) adjusting the temperature of the synthesis gas; (ii) passing at least a portion of the heated synthesis gas adiabatically through a first bed of sulphur-tolerant water-gas shift catalyst disposed in a first shift vessel at a space velocity ?12,500 hour?1 to form a pre-shifted gas stream; and (iii) forming a shifted gas stream by subjecting at least a portion of the pre-shifted gas stream to a second stage of water-gas shift in a second shift vessel containing a second bed of sulphur-tolerant water-gas shift catalyst that is cooled in heat exchange with a gas stream including the synthesis gas.

Abstract: Process for increasing the hydrogen content of a synthesis gas containing one or more sulphur compounds, the synthesis gas including hydrogen, carbon oxides and steam, and having a ratio defined as R?(H2—CO2)/(CO+CO2)?0.6 and a steam to carbon monoxide ratio ?1.8, including the steps of (i) heating the synthesis gas; (iii) subjecting at least a portion of the heated synthesis gas to a first stage of water-gas shift in a first shift vessel containing a first sulphur-tolerant water-gas shift catalyst that is cooled in heat exchange with boiling water, to form a pre-shifted gas stream; and (iii) forming a shifted gas stream by subjecting at least a portion of the pre-shifted gas stream to a second stage of water-gas shift in a second shift vessel containing a second sulphur-tolerant water-gas shift catalyst that is cooled in heat exchange with a gas stream including the synthesis gas.