Abstract: A pharmaceutical composition comprising a semifluorinated alkane of formula (I): F(CF2)n(CH2)mH, wherein n is an integer from 4 to 6, and m is an integer from 5 to 8, for use in the treatment or prevention of a disease or condition relating to an ocular surface of an eye of an individual, wherein the individual is a contact lens wearer, and wherein the contact lens is a hydro gel contact lens and the composition is administered topically to a surface of the eye of the individual before the contact lens is inserted to the eye of the individual and/or during contact lens wear and/or after the contact lens has been removed from the eye of the individual, or wherein the contact lens is a silicone hydrogel contact lens and the composition is administered topically to a surface of the eye of the individual after the contact lens has been removed from the eye of the individual.

Abstract: A pharmaceutical composition comprising a semifluorinated alkane of formula (I): F(CF2)n(CH2)mH, wherein n is an integer from 4 to 6, and m is an integer from 5 to 8, for use in the treatment or prevention of a disease or condition relating to an ocular surface of an eye of an individual, wherein the individual is a contact lens wearer, and wherein the contact lens is a hydro gel contact lens and the composition is administered topically to a surface of the eye of the individual before the contact lens is inserted to the eye of the individual and/or during contact lens wear and/or after the contact lens has been removed from the eye of the individual, or wherein the contact lens is a silicone hydrogel contact lens and the composition is administered topically to a surface of the eye of the individual after the contact lens has been removed from the eye of the individual.

Abstract: A method for producing a usable by-product in a cyclone reactor. The method comprises introducing a reactant into a housing of the reactor through an inlet; using a burner to combust a first portion of the reactant in an exothermic reaction provided in a flame zone near a center of the housing; consuming a second portion of the reactant in an endothermic reaction near an outer wall of the housing to produce the by-product as part of a slag layer; and removing the slag layer including the by-product though an outlet in the housing; wherein the endothermic reaction takes place at a temperature of at least 1600° C.

Abstract: A cyclone reactor for producing a usable by-product as part of a recoverable slag layer, the reactor comprising a housing having an outer wall that defines a combustion chamber; an inlet configured to introduce a reactant into the reactor; a burner configured to combust the reactant in a flame zone near a central axis of the chamber; and an outlet configured to provide for the removal of the usable by-product from the housing; wherein the reactor is configured to combust a first portion of the reactant in an exothermic reaction in the flame zone; and wherein the reactor is configured to convert a second portion of the reactant in an endothermic reaction near the outer wall to produce the by-product as part of the slag layer.

Abstract: The invention relates to a method for producing highly pure, granular silicon by decomposing a gas containing silicon in a procedure comprising at least two operating states, at least one state comprising the increased formation of nucleus particles from the decomposition of said gas containing silicon and at least one other state comprising the increased separation of the silicon with expansion of the diameter of the silicon granules. The invention also relates to the use of silicon produced in this way and to highly pure, granular silicon particles which are characterised by a coreless structure.