Abstract: A simultaneously molded plurality of composite shingles or double walled shingles or other substantially planar exterior building products are provided, each being comprised of two or more layers of thermoplastic shingle material, such that a weatherable capstock material is provided outside a core material, in the form of a composite parison that is then blow molded in a hollow mold, to produce novel shingles. Ventilation and/or insulation can be provided to a hollow interior between spaced apart walls of a double walled shingle.

Abstract: The present invention provides the cloning and expression of purified and isolated DNA molecules, obtainable from fungi, which encode enzymes having arabinan-degrading activity. The present invention also provides DNA constructs containing these DNA molecules and methods for their enhanced expression in selected microbial host cells. The present invention further provides methods for the use of the thus-produced arabinan-degrading enzymes.

Abstract: The invention relates to a process for preparing a concentrate of Factor VIII-von Willebrand factor complex having high specific activity from total (non-cryoprecipitated) plasma.The process comprises pre-purifying by means of a double treatment with barium chloride and with aluminium hydroxide.The process then comprises purification by chromatography on an anion exchange resin, of the DEAE-Fractogel type.The process includes a step of viral inactivation by means of a treatment with solvent-detergent.The process also makes it possible to recover fibrinogen, albumin, immunoglobulins, antithrombin III, fibronectin and prothrombin complex, from the same plasma.The different concentrates obtained using the process according to the invention are intended, in particular, for therapeutic use.