Abstract: The present technology provides embodiments of recirculating noble gas combustion power cycles and systems including engines utilizing these power cycles. Embodiments of the cycles may include a combination of a high intake/exhaust pressure, very late or early intake valve closure, late exhaust valve opening, intake preheating using exhaust gases, sensible heat recovery, direct injection of fuel and/or oxidizer, and a condenser to remove combustion products and dissolved trace contaminant gases. An engine operating on these principles could provide motive force for electrical production, for example at power plants, or for transit, for example for ship engines. An engine operating with the cycles disclosed herein has high thermal efficiency and low cost. For example an argon power cycle using natural gas feedstock and cryogenic oxygen air separation could exceed 60% overall efficiency.

Abstract: The present technology provides embodiments of recirculating noble gas combustion power cycles and systems including engines utilizing these power cycles. Embodiments of the cycles may include a combination of a high intake/exhaust pressure, very late or early intake valve closure, late exhaust valve opening, intake preheating using exhaust gases, sensible heat recovery, direct injection of fuel and/or oxidizer, and a condenser to remove combustion products and dissolved trace contaminant gases. An engine operating on these principles could provide motive force for electrical production, for example at power plants, or for transit, for example for ship engines. An engine operating with the cycles disclosed herein has high thermal efficiency and low cost. For example an argon power cycle using natural gas feedstock and cryogenic oxygen air separation could exceed 60% overall efficiency.

Abstract: The present invention consists on the synthesis of new products for the treatment of the iron chlorosis. These products may have improved properties regarding the currently known treatments. The new products are non-symmetrical ethylene diamino hydroxyphenyl acetic acid derivatives possessing only five coordination sites able to chelate metals.

Abstract: The present invention consists on the synthesis of new products for the treatment of the iron chlorosis. These products may have improved properties regarding the currently known treatments. The new products are non-symmetrical ethylene diamino hidroxyphenyl acetic acid derivatives possessing only five coordination sites able to chelate metals.

Abstract: The invention relates to microcapsules, and a continuous micro-encapsulation water-in-oil-in-water microencapsulation process through in situ and interfacial polymerization of the emulsion. The formulation comprises a continuous water phase having a dispersion of microcapsules which contain oil drops and wherein the inside of each oil phase drop—containing optionally oil-soluble materials—there is a dispersion of water, or aqueous extract or water dispersible material or water soluble material. The oil drops are encapsulated with a polymerisable material of natural origin. Such microcapsules are appropriated for spray-dry processes, to be used as dry powder, lyophilised, self-emulsifiable powder, gel, cream and any liquid form. The active compounds included in the microcapsules are beneficial to the health and other biological purposes.