Abstract: An aqueous fluid is gelled in a productive zone of a subterranean formation to create a temporary fluid-impermeable barrier. The fluid contains nanoparticles, a polyacrylamide having a weight average molecular weight from about 1.5 million to 22 million Dalton and an encapsulated liquid crosslinking agent. Upon release of the liquid crosslinking agent, the barrier is formed by crosslinking the polyacrylamide. The nanoparticles remain dispersed in the crosslinked gel. The fluid-impermeable barrier is effective over a period of at least 1 hour up to 2 weeks while the downhole temperature in the well is at least 300° C.

Abstract: The present invention describes a Solid-Liquid-Solid hydrometallurgical process, optimized and independent of redox potential, to increase the solubilization of metals from ores and/or concentrates with a granulometry of less than 40 mm, by means of an initial stage called “Activation”; a second stage called “Dry autocatalytic transformation”; a third stage called “Washing and re-wetting”; and where the stages of dry autocatalytic transformation and washing and re-wetting, can be repeated in an alternating and repeated way.

Abstract: The present invention relates to a chemical and physical hydrometallurgical method with solid-liquid-solid interaction for the solubilization of copper sulphides, by Selective Transformation and Precipitation of soluble, chlorinated, copper species, where said method does not depend on the redox potential and can be carried out in a wide range of pH under conditions of salts supersaturation, which is a condition that is generated by periods of non-irrigation, from ores or copper concentrates, mainly primary sulphides, such as chalcopyrite comprising said copper. This method is composed of 3 steps, called “Moistening and Solvation Step”, “Selective Transformation and Precipitation Step” and “Acid-Chlorinated Washing step”, wherein said method does neither require the addition of oxidizing or reducing agents, nor oxygen. Furthermore, the steps of the method can be applied only with the presence of water, where acid addition is not required.

Abstract: The present invention relates to a solid-liquid-solid hydrometallurgical method in the presence of hydrated and/or non-hydrated salts in an oversaturation conditions, which is achieved by the intentional and repetitive application of drying and wetting steps, enhancing the chemical and physical phenomena on the mineral or concentrate, thus provoking the crystallization, re-crystallization, and release of copper in a non-stoichiometric decomposition of the sulfide and its subsequent precipitation with chloride. The invention is made up of 3 steps called: (a) Wetting, (b) Drying and Oversaturation, (c) Washing and re-wetting, and these are conducted at temperatures ranging from 20-40° C. regardless of the redox potential with a minimum consumption of water and acid without requiring the addition of oxygen. The method allows diminishing the water and acid consumption, since the transformation of the sulfide can be carried out only in the presence of hydrated salts and/or the minimal addition of acid and water.

Abstract: The present disclosure provides a composition. The composition contains (A) an ethylene-based polymer; (B) a carboxylic-functionalized ethylene-based polymer; and (C) from 0.5 wt % to 5.0 wt % of a polydimethylsiloxane, based on the total weight of the composition. The present disclosure also provides a film with a layer containing said composition.

Abstract: The present invention relates to an autocatalytic reductive chemical procedure with solid-solid interaction in conditions of supersaturation of salts, via the phenomenon of efflorescence in order to dissolve a copper metal, from a metallogenically primary ore or chalcopyrite concentrate that contains same. The method comprises two steps, referred to as “Reductive Activation Step” and “Dry Autocatalytic Reductive Transformation Step” or efflorescence, which can be repeated as many times as necessary to maximise the extraction of copper or base metal of interest. The invention can also be used for sulphurised base metals such as nickel, zinc, cobalt, lead and molybdenum, among others, regardless of the common impurities of sulphurised ores, as occurs with the presence of arsenic.

Abstract: Novel structures and methods for forming useful high temperature superconducting devices, most particularly resonators, are provided. Structures resulting in reduced peak current densities relative to known structures achieve numerous desirable benefits, especially including the reduced intermodulation effects of earlier resonators. In one aspect of this invention, a spiral in, spiral out resonator is provided, characterized in that it has an odd number of long runs, at least equal to five long runs, where the long runs are connected by turns, and wherein there are at least two sequential turns of the same handedness, followed by at least two turns of the opposite handedness. In yet another aspect of this invention, it has been discovered that reducing the size of the input and output pads of HTS resonators increases the relative inductance compared to the capacitance. Yet another resonator structure is a spiral snake resonator having a terminal end disposed within the resonator.