Abstract: The invention relates to a method for the plasma-assisted synthesis of organohalosilanes in which organohalosilanes of the general empirical formula R1mR2oSiX4-p (X=F, Cl, Br or I; p=1-4; p=m+o; m=1-4; o=0-3; R1, R2=alkyl, alkenyl, alkinyl, aryl) and/or carbosilanes of the general empirical formula R3qSiX3-qCH2SiR4rX3-r (X=F, Cl, Br or I; q=0-3; r=0-3; R3, R4=alkyl, alkenyl, alkinyl, aryl) are formed by activating a plasma in a mixture of one or more volatile organic compounds from the group of alkanes, alkenes, alkines and aromates with SiX4 and/or organohalosilanes RnSiX4-n (X=F, Cl, Br oder I; n=1-4; R=alkyl, alkenyl, alkinyl, aryl).

Abstract: The present invention relates to a halogenated polysilane as a pure compound or a mixture of compounds each having at least one direct Si—Si bond, whose substituents consist exclusively of halogen or of halogen and hydrogen and in the composition of which the atomic ratio of substituent to silicon is at least 1:1.

Abstract: The present invention relates to a halogenated polysilane as a pure compound or mixture of compounds each having at least one direct Si—Si bond, whose substituents consist exclusively of halogen or of halogen and hydrogen and in whose composition the atomic ratio substituent:silicon is greater than 1:1.

Abstract: The present invention describes the genetic engineering of production microorganisms used in biotechnology to improve their properties so that they produce industrially useful products more efficiently from fermentable sugars derived from biomass. The engineered microorganisms endowed with functional coupling of oxidation and reduction of substrates by dehydrogenases requiring pyridine nucleotides (NAD/NADH) result in simultaneous enhancement of reduction potential enzyme activity involving the transfer of electrons. In particular, this invention relates to the construction of an excisable gene expression cassette for expression of two different dehydrogenases leading to enhanced production of ethanol.

Abstract: The present invention describes the genetic engineering of production microorganisms used in biotechnology to improve their properties so that they produce industrially useful products more efficiently from fermentable sugars derived from biomass. The engineered microorganisms endowed with functional coupling of oxidation and reduction of substrates by dehydrogenases requiring pyridine nucleotides (NAD/NADH) result in simultaneous enhancement of reduction potential enzyme activity involving the transfer of electrons. In particular, this invention relates to the construction of an excisable gene expression cassette for expression of two different dehydrogenases leading to enhanced production of ethanol.

Abstract: The present invention relates to a new fertilizer compound of the ureaform type and to a method for the production thereof. The new ureaform compound is characterized by the low average degree of polymerization between urea and formaldehyde. The new compound has a nitrogen content of over 41% by weight and consists of cold water soluble nitrogen as the main fraction and cold water insoluble as the second fraction which is substantially free of hot water insoluble nitrogen. The new ureaform compound is obtained by the condensation of urea and formaldehyde at a correct ratio between the reagents and termination of the reaction at a stage wherein excessive polymerization is prevented. The reaction is carried out in a controlled system with a pH in the range of 3.5 to 4.2. Particularly useful are the systems H.sub.3 PO.sub.4 -KH.sub.2 PO.sub.4 and H.sub.3 PO.sub.4 -NH.sub.4 H.sub.2 PO.sub.4.