Abstract: A process to obtain dibenzylbutyrolactonic lignans from (-)-cubebin, isolated from a Piperaceae, especially Piper cubeba, and from (-)-methylpluviatolide, isolated from a Rutacea, especially Zanthoxylum naranjillo; their synthetic and semi-synthetic derivatives and tetrahydrofuranic lignans, such as galgravin and veragensin, isolated from Nectandra megapotamica, as well as the analgesic and anti-inflammatory activities of said lignans, and the topical and/or systemic formulations. Also presented is a therapeutic method using topic and/or systemic formulations based on said lignans for the treatment of inflammation and/or pain.

Abstract: A method of producing a porous flow field material for a bipolar separator plate is provided. The method includes bonding a single layer of wire mesh or bonding together at least two layers of wire mesh to form a porous flow field material, wherein the bonding is achieved by diffusion bonding, continuous resistance welding, continuous sintering, or a combination thereof. Such porous flow filed materials may function as, for example, fluid flow fields, current collectors, gas distribution layers, and/or coolant layers. A method of producing a bipolar separator plate including such porous flow field materials is also provided, wherein the component layers are bonded together by diffusion bonding, continuous resistance welding, continuous sintering, or a combination thereof, thereby forming a bipolar separator plate.