Abstract: A process for recovering gold from a refractory gold ore, comprising the steps of: electrolyzing a mixture consisting of the ore particles and an aqueous bromide solution in an electrolytic cell having anode and cathode, wherein bromine is produced at the anode by oxidation of the bromide, thereby dissolving gold in the aqueous phase; separating the ore particles from the aqueous phase to obtain a leach liquor; adjusting the pH of the leach liquor to the alkaline range to produce a gold-containing precipitate; collecting the gold-containing precipitate and recycling a bromide-containing barren solution for reuse as an aqueous bromide feed solution.

Abstract: A process for recovering gold from a refractory gold ore, comprising the steps of: electrolyzing a mixture consisting of the ore particles and an aqueous bromide solution in an electrolytic cell having anode and cathode, wherein bromine is produced at the anode by oxidation of the bromide, thereby dissolving gold in the aqueous phase; separating the ore particles from the aqueous phase to obtain a leach liquor; adjusting the pH of the leach liquor to the alkaline range to produce a gold-containing precipitate; collecting the gold-containing precipitate and recycling a bromide-containing barren solution for reuse as an aqueous bromide feed solution.

Abstract: The present invention provides core-stabilized microcapsules, wherein said core comprises at least one active agent encapsulated within an inorganic oxide shell, processes for their preparations, comparisons comprising them and uses thereof.

Abstract: The present invention provides core-stabilized microcapsules, wherein said core comprises at least one active agent encapsulated within an inorganic oxide shell, processes for their preparations, comparisons comprising them and uses thereof.

Abstract: The invention relates to a process for coating a solid, water-insoluble particulate matter, with a metal oxide comprising: (a) contacting the solid, water-insoluble particulate matter with an ionic additive and an aqueous medium to obtain a dispersion of said particulate matter having positive charges on its surface; (b) subjecting the particulate matter to a coating procedure comprising precipitating a metal oxide salt onto the surface of the particulate matter to form a metal oxide layer thereon to thereby obtain particulate matter coated by a metal oxide coating layer; (c) repeating step (b) at least 4 more times; and (d) aging said coating layer. The invention further relates to particles comprising a particulate matter coated by a metal oxide layer, to a use of the particles for topical administration, and to a method for preventing, reducing, or eliminating pests at a locus, using the particles.

Abstract: The present invention relates to pharmaceutical compositions for topical use (including also dermatological compositions), for treating skin conditions and afflictions, such as rosacea and symptoms and conditions associated there from.

Abstract: The invention relates to a process for coating a solid, water-insoluble particulate matter, with a metal oxide comprising: (a) contacting the solid, water-insoluble particulate matter with an ionic additive and an aqueous medium to obtain a dispersion of said particulate matter having positive charges on its surface; (b) subjecting the particulate matter to a coating procedure comprising precipitating a metal oxide salt onto the surface of the particulate matter to form a metal oxide layer thereon to thereby obtain particulate matter coated by a metal oxide coating layer; (c) repeating step (b) at least 4 more times; and (d) aging said coating layer. The invention further relates to particles comprising a particulate matter coated by a metal oxide layer, to a use of the particles for topical administration, and to a method for preventing, reducing, or eliminating pests at a locus, using the particles.

Abstract: The present invention provides a process for preparing microcapsules comprising a core material encapsulated by a metal oxide shell, microcapsules obtained therewith and uses thereof.

Abstract: The present invention provides core-stabilized microcapsules, wherein said core comprises at least one active agent encapsulated within an inorganic oxide shell, processes for their preparations, comparisons comprising them and uses thereof.

Abstract: The present invention provides a process for preparing microcapsules comprising a core material encapsulated by a metal oxide shell, microcapsules obtained therewith and uses thereof.

Abstract: A process for preparing nanocapsules having a core-shell structure, comprising: (a) preparing an oil-in-water emulsion by emulsification of an oily phase that comprises a core material, in an aqueous phase, under high shear forces, wherein one or both of the oily phase, and the aqueous phase comprises a sol-gel precursor; (b) subjecting the emulsion obtained in (a) to a high pressure homogenization to obtain a nano-emulsion; and (c) applying conditions for hydrolyzing and polycondensing the sol-gel precursor to obtain nanocapsules having a metal oxide shell encapsulating the core material, said nanocapsules have a particle size distribution of: d10=10-80 nm, d50=30-200 nm, and d90=70-500 nm, in diameter. The invention also relate to nanocapsules having the above particle size distribution and to composition comprising the nanocapsules.

Abstract: The present invention provides core-stabilized microcapsules, wherein said core comprises at least one active agent encapsulated within a metal oxide shell, processes for their preparations, comparisons comprising them and uses thereof.

Abstract: The present invention provides core-stabilized microcapsules, wherein said core comprises at least one active agent encapsulated within an inorganic oxide shell, processes for their preparations, comparisons comprising them and uses thereof.

Abstract: The present invention provides core-stabilized microcapsules, wherein said core comprises at least one active agent encapsulated within a inorganic oxide shell, processes for their preparations, comparisons comprising them and uses thereof.

Abstract: The present invention relates to pharmaceutical compositions for topical use (including also dermatological compositions), for treating skin conditions and afflictions, such as rosacea and symptoms and conditions associated there from.

Abstract: The present invention provides core-stabilized microcapsules, wherein said core comprises at least one active agent encapsulated within a metal oxide shell, processes for their preparations, comparisons comprising them and uses thereof.

Abstract: The invention relates to process for coating a solid, water-insoluble particulate matter, with a metal oxide comprising: (a) contacting the solid water-insoluble particulate matter with a cationic additive in an aqueous medium to obtain a dispersion of said particulate matter having a positive zeta potential; (b) coating the solid water-insoluble particulate matter by precipitation of a metal oxide salt onto the surface of the particulate matter, forming a metal oxide layer thereon; and (c) aging said coating layer. The invention further relates to coated particulate matter obtained by the process and to compositions comprising solid, water-insoluble particulate matter, coated by a metal oxide layer, the particulate matter being a dermatological active agent or a pesticide. The invention additionally relates to methods of treating a surface condition in a subject using compositions comprising solid, water insoluble dermatologically active agent, coated by a metal oxide layer.

Abstract: The present invention relates to pharmaceutical compositions for topical use (including also dermatological compositions), for treating skin conditions and afflictions, such as rosacea and symptoms and conditions associated there from.

Abstract: The present invention relates to pharmaceutical compositions for topical use (including also dermatological compositions), for treating skin conditions and afflictions, such as rosacea and symptoms and conditions associated there from.

Abstract: The present invention relates to pharmaceutical compositions for topical use (including also dermatological compositions), for treating skin conditions and afflictions, such as rosacea and symptoms and conditions associated there from.