Abstract: An apparatus for controlling a downhole device in an oil, gas or water well includes an outer body, defining a central cavity extending along a longitudinal axis of the outer body; a first piston assembly arranged within the central cavity, the first piston assembly moveable along the longitudinal axis to switch the downhole device between different modes, a first seal arranged to seal between the first piston assembly and an inner wall of the central cavity; a first biasing member arranged to bias the first piston assembly in a first direction along the longitudinal axis; a second piston assembly arranged within the central cavity, spaced from the first piston assembly in a second direction along the longitudinal axis, the second direction opposite the first direction, a second seal arranged to seal between the second piston assembly and the inner wall of the central cavity; and a second biasing member arranged to bias the second piston assembly in the first direction.

Abstract: A torque reduction assembly for a drill string has a mandrel for connecting two sections of drill pipe, the mandrel comprising a first annular shoulder and a plurality of radial retention slots arranged circumferentially around an outer surface of the mandrel, including a first retention slot and a second retention slot; an outer sleeve for rotatably mounting on the mandrel; a retaining ring for retaining the outer sleeve between the retaining ring and the first annular shoulder, the retaining ring comprising a first aperture and a circumferential groove about an inner surface of the retaining ring, the first aperture aligned with the circumferential groove, the retaining ring being rotatable about the mandrel so as to progressively align the first aperture with each retention slot; a first retention element for locating in the first retention slot via the first aperture to axially fix the retaining ring relative to the mandrel such that the retaining ring is still rotatable about the mandrel; and a second re

Abstract: A torque reduction assembly for a drill string has a mandrel for connecting two sections of drill pipe, the mandrel comprising a first annular shoulder and a plurality of radial retention slots arranged circumferentially around an outer surface of the mandrel, including a first retention slot and a second retention slot; an outer sleeve for rotatably mounting on the mandrel; a retaining ring for retaining the outer sleeve between the retaining ring and the first annular shoulder, the retaining ring comprising a first aperture and a circumferential groove about an inner surface of the retaining ring, the first aperture aligned with the circumferential groove, the retaining ring being rotatable about the mandrel so as to progressively align the first aperture with each retention slot; a first retention element for locating in the first retention slot via the first aperture to axially fix the retaining ring relative to the mandrel such that the retaining ring is still rotatable about the mandrel; and a second re

Abstract: Compounds and methods of scavenging bifunctional electrophiles and reducing the occurrence of lysyl-levuglandin adducts in a subject in need thereof by administering a levuglandin adduct formation inhibiting amount of a compound of the following formula: wherein the variables are defined herein.

Abstract: Compounds and methods of scavenging bifunctional electrophiles and reducing the occurrence of lysyl-levuglandin adducts in a subject in need thereof by administering a levuglandin adduct formation inhibiting amount of a compound of the following formula: wherein the variables are defined herein.

Abstract: A method of preventing or reducing the occurrence of malondiadehyde and/or levuglandin protein modification in a subject in need thereof, comprising administering to said subject an effective amount of at least one reactive dicarbonyl scavenger compound, or a pharmaceutically acceptable salt thereof.

Abstract: A method of treating atherosclerosis, comprising administering to a patient in need there of an effective gamma-ketoaldehyde scavenging amount of a gamma-ketoaldehyde scavenging compound.

Abstract: Digital predistortion (DPD) arrangements that use coding to differentiate between contributions from individual power amplifiers (PAs) is disclosed. When used with a phased antenna array having N antenna elements and N corresponding PAs, the arrangements may sequentially apply N codes to input signals provided to N PAs. Each code is a vector having N elements, where each element corresponds to a different PA in that the element is a complex gain applied to an input signal for the PA. Together, the N codes may be arranged as N rows or N columns of a matrix P. The disclosed arrangements may generate N feedback signals by applying the matrix P to a signal generated by a probe antenna element sensing wireless RF signals transmitted by the N antenna elements, and to update DPD coefficients based on the N feedback signals. The N codes may be either orthogonal or non-orthogonal.

Abstract: A compression roller device includes markers on roller heads for pressure-rolling over a substrate to form visual indicia that the substrate has been properly pressure-rolled. In example embodiments, there are two roller heads that each have a set of markers and that are spaced-apart with a handle center-mounted between them. In this way, the roller heads have free/unobstructed outer/opposite edges so they can be positioned closely against an obstructing surface or element for rolling substrates in tight spots with limited clearance. Also, the recess defined between the inner/facing edges of the roller heads provides clearance for rolling over any protruding fasteners securing the substrate in place. Further, the spaced-apart marker sets provide for marking the visual indicia on both sides of a seam/joint between two adjacent panels in a panel-and-tape system to show that both longitudinal side portions of the tape have been pressure-rolled.

Abstract: Compounds and methods of scavenging bifunctional electrophiles and reducing the occurrence of lysyl-levuglandin adducts in a subject in need thereof by administering a levuglandin adduct formation inhibiting amount of a compound of the following formula: wherein the variables are defined herein.

Abstract: A method of preventing or reducing the occurrence of malondiadehyde and/or levuglandin protein modification in a subject in need thereof, comprising administering to said subject an effective amount of at least one reactive dicarbonyl scavenger compound, or a pharmaceutically acceptable salt thereof.

Abstract: A method of preventing or reducing the occurrence of malondiadehyde and/or levuglandin protein modification in a subject in need thereof, comprising administering to said subject an effective amount of at least one ?-KA scavenger compound, or a pharmaceutically acceptable salt thereof.

Abstract: Methods and compounds for the treatment or prevention of oxidative damage in a mammalian subject. The treatment and/or prevention may be on inhibiting heme-induced lipid peroxidation. Also discloses are methods and compounds for treating or preventing isoprostane-mediated tissue damage.

Abstract: A method of treating atherosclerosis, comprising administering to a patient in need there of an effective gamma-ketoaldehyde scavenging amount of a gamma-ketoaldehyde scavenging compound.

Abstract: A compression roller device includes markers on roller heads for pressure-rolling over a substrate to form visual indicia that the substrate has been properly pressure-rolled. In example embodiments, there are two roller heads that each have a set of markers and that are spaced-apart with a handle center-mounted between them. In this way, the roller heads have free/unobstructed outer/opposite edges so they can be positioned closely against an obstructing surface or element for rolling substrates in tight spots with limited clearance. Also, the recess defined between the inner/facing edges of the roller heads provides clearance for rolling over any protruding fasteners securing the substrate in place. Further, the spaced-apart marker sets provide for marking the visual indicia on both sides of a seam/joint between two adjacent panels in a panel-and-tape system to show that both longitudinal side portions of the tape have been pressure-rolled.

Abstract: A method of preventing or reducing the occurrence of malondiadehyde and/or levuglandin protein modification in a subject in need thereof, comprising administering to said subject an effective amount of at least one ?-KA scavenger compound, or a pharmaceutically acceptable salt thereof.

Abstract: A new and distinct Echeveria plant named ‘MOBEc 69’ which is characterized by succulent foliage tightly held in a basal rosette, light blue-green foliage which is lightly margined red, and significantly delayed development of clonal offsets. The new variety has shown to be uniform and stable in the resulting generations from asexual propagation.