Abstract: Embodiments of the invention provide a system or a method for combusting reactants including a fuel and an oxidizer into combustion products in a combustor. A combustor can be configured to contain a flow of the reactants and the combustion products that extends in a first direction. The flow can be subject to acceleration in a second direction at least partly transverse to the first direction. One or more micro-flameholders can be disposed within the combustor at or upstream of a location at which the flow is subject to the acceleration in the second direction. The one or more micro-flameholders can be configured to facilitate or promote Rayleigh-Taylor instability to cause interpenetration of the reactants and the combustion products within the combustor.

Abstract: Embodiments of the invention provide a system or a method for combusting reactants including a fuel and an oxidizer into combustion products in a combustor. A combustor can be configured to contain a flow of the reactants and the combustion products that extends in a first direction. The flow can be subject to acceleration in a second direction at least partly transverse to the first direction. One or more micro-flameholders can be disposed within the combustor at or upstream of a location at which the flow is subject to the acceleration in the second direction. The one or more micro-flameholders can be configured to facilitate or promote Rayleigh-Taylor instability to cause interpenetration of the reactants and the combustion products within the combustor.

Abstract: The invention relates to a method of preparing an original sample (3) of biological origin with a view to detecting at least one component contained in it, whereby the original sample (3) is enclosed in a first container (1) and at least a part of this original sample (3) is transferred from the first container (1) into at least one reaction container, a reagent (9) or reagent mixture being placed beforehand in at least one of the reaction containers in order to prepare the original sample (3) and the component to be detected. In order to transfer at least a part of the original sample (3), two respective containers (1, 6) are connected to one another to form a closed, airtight system at least until at least the component(s) to be detected has (have) been rendered stable by reacting it (them) with the reagent (9) or reagent mixture at room temperature.

Abstract: The invention relates to a method of preparing an original sample (3) of biological origin with a view to detecting at least one component contained in it, whereby the original sample (3) is enclosed in a first container (1) and at least a part of this original sample (3) is transferred from the first container (1) into at least one reaction container, a reagent (9) or reagent mixture being placed beforehand in at least one of the reaction containers in order to prepare the original sample (3) and the component to be detected. In order to transfer at least a part of the original sample (3), two respective containers (1, 6) are connected to one another to form a closed, airtight system at least until at least the component(s) to be detected has (have) been rendered stable by reacting it (them) with the reagent (9) or reagent mixture at room temperature.

Abstract: A Brayton-cycle rotary ramjet engine (10) operated within the confines of a helically elongated pass-through duct formed between a preferably stationary radially outward surface (14) and an outer rotating flow channel (36). The flow channel (36) is contoured between its inlet (34) and outlet (38) to include a supersonic diffuser (40), a combustor (42) and an expansion nozzle (44). Gaseous fuel, or liquid fuel atomized by a fuel slinger (58) within a housing (46), or solid fuel in the form of fine particulates, is inter-mixed with an oxidizer prior to being directed to the flow channel inlets (34). The air and fuel are combusted in the flow channels (36) and exhausted through the rear of the housing (46). A generator (22) can be coupled to a power shaft (18) to convert net shaft power into electricity. Preferably, the rotor (24) and stator (12) are fabricated from a ceramic or other high-temperature material so that combustor exit temperatures (T3) can be operated at highly efficient levels.