Abstract: The invention relates to a passive tracking device for tracking the position of the sun, which comprises a hollow parallelepiped casing through which the solar radiation entering through a first lens located at the upper end of the parallelepiped casing passes towards a discriminating reflector arranged at the lower end of the same casing; the tracking device redirects as much incoming radiation as possible towards side chambers for absorbing radiation, heating a working fluid contained in the side chamber; producing a volumetric expansion in the working fluid that, communicating with shafts for the rotation of the tracking device, allows the orientation with the normal/perpendicular position with respect to the position of the sun, and to guide the alignment direction of other tracking devices for collecting energy in devices for collecting photovoltaic and/or thermal energy that are mechanically connected to the tracking device.

Abstract: A rubber compound including an azide cured elastomeric base, wherein the rubber compound is used to form an elastomeric component of a downhole tool. The rubber compound is comprised of at least one elastomeric component and at least one diazide curing agent.

Abstract: The invention relates to a passive tracking device for tracking the position of the sun, which comprises a hollow parallelepiped casing through which the solar radiation entering through a first lens located at the upper end of the parallelepiped casing passes towards a discriminating reflector arranged at the lower end of the same casing; the tracking device redirects as much incoming radiation as possible towards side chambers for absorbing radiation, heating a working fluid contained in the side chamber; producing a volumetric expansion in the working fluid that, communicating with shafts for the rotation of the tracking device, allows the orientation with the normal/perpendicular position with respect to the position of the sun, and to guide the alignment direction of other tracking devices for collecting energy in devices for collecting photovoltaic and/or thermal energy that are mechanically connected to the tracking device.

Abstract: A composition and associated method for chemical mechanical planarization of a metal-containing substrate (e.g., a copper substrate) are described herein which afford high and tunable rates of metal removal as well as low within a wafer non-uniformity values and low residue levels remaining after polishing.

Abstract: A ventilation conduit for a ventilation system for the delivery of air includes an outer electrode and in inner electrode. The outer electrode is formed as a wall body of the ventilation conduit. The inner electrode is configured to be arranged in an interior space of the ventilation conduit that is enclosed by the outer electrode. Applying an electric voltage between the inner electrode and the outer electrode allows a gas discharge to be brought about to generate a plasma for cleaning the ventilation conduit in an installed state.

Abstract: A composition and associated method for chemical mechanical planarization of a metal-containing substrate (e.g., a copper substrate) are described herein which afford high and tunable rates of metal removal as well as low within a wafer non-uniformity values and low residue levels remaining after polishing.

Abstract: A composition and associated method for chemical mechanical planarization of a metal-containing substrate (e.g., a copper substrate) are described herein which afford high and tunable rates of metal removal as well as low within a wafer non-uniformity values and low residue levels remaining after polishing.