Abstract: The invention concerns a method for the recombinant production or expression of eukaryotic alkaline phosphatase mutants in yeast cells wherein the specifically introduced mutations result in a reduction of the specific AP activity by at least a factor 1:100. The invention also concerns a method for inserting corresponding nucleic acid sequences into a vector for expression in methylotrophic yeast strains and it concerns corresponding vectors and host strains.

Abstract: Truncated terminal deoxynucleotidyl transferase (TdT) derivative from calf thymus, characterized in that the derivative in comparison to the native TdT is N-terminally truncated by up to 161 amino acids and has a 20- to 30-fold higher enzyme activity in solutions containing Co2+ ions, and its recombinant production and use.

Abstract: A gas sensor is for determining at least one physical quantity of a gas, e.g., an exhaust gas of an internal combustion engine, the gas sensor having a sensor element that is fixed in a housing of the gas sensor by a seal assembly. The seal assembly includes a sealing element, which has a ceramic and/or a metallic material. After the heat treatment, the sealing element has a maximum decrease in volume of 5 percent, or an increase in volume, based on the volume of the sealing element prior to the heat treatment.

Abstract: The invention concerns a process for the recombinant production and expression of eukaryotic alkaline phosphatase in yeast cells in which in particular a DNA coding for a eukaryotic highly active alkaline phosphatase having a specific activity above 3000 U/mg is used. The invention additionally concerns a process for inserting corresponding nucleic acid sequences into a vector for expression in methylotrophic yeast strains and it concerns appropriate vectors and host strains.

Abstract: The invention relates to a production method for a solar cell and to the solar cell itself which comprises an integrated bypass diode on the side facing away from the incidence of light and which can be produced in a simple manner by diffusion. A one-piece electric conductor serves to connect two successive solar cells in series and simultaneously effects the contacting of the corresponding bypass diode.

Abstract: The heterologous expression of the reverse transcriptase from the Avian Myeloblastosis Virus (AMV-RT) in prokaryotic cells and in particular Escherichia coli (E. coli) is described in the present invention. The invention also includes certain measures to simplify the purification of the heterodimeric AMV-RT.

Abstract: The present invention concerns muteins of avidin and streptavidin with a reduced binding affinity for biotin as well as their use as interference elimination reagents in methods for the determination of an analyte e.g. in diagnostic tests such as for example immunoassays and nucleic acid hybridization assays. In addition the invention concerns the use of muteins of avidin and streptavidin as systems capable of regeneration for binding biotin e.g. for the analysis of biotinylated molecules, for examining receptor ligand interactions as well as for the affinity purification of biotinylated molecules.

Abstract: The present invention concerns muteins of avidin and streptavidin with a reduced binding affinity for biotin as well as their use as interference elimination reagents in methods for the determination of an analyte e.g. in diagnostic tests such as for example immunoassays and nucleic acid hybridization assays. In addition the invention concerns the use of muteins of avidin and streptavidin as systems capable of regeneration for binding biotin e.g. for the analysis of biotinylated molecules, for examining receptor ligand interactions as well as for the affinity purification of biotinylated molecules.

Abstract: The present invention concerns muteins of avidin and streptavidin with a reduced binding affinity for biotin as well as their use as interference elimination reagents in methods for the determination of an analyte e.g. in diagnostic tests such as for example immunoassays and nucleic acid hybridization assays. In addition the invention concerns the use of muteins of avidin and streptavidin as systems capable of regeneration for binding biotin e.g. for the analysis of biotinylated molecules, for examining receptor ligand interactions as well as for the affinity purification of biotinylated molecules.

Abstract: DNA molecule comprising a structural gene which codes for a bacterial protein with the enzymatic activity of 3-hydroxybutyrate dehydrogenase (3-HBDH), a recombinant DNA containing the DNA molecule, microorganisms transformed accordingly, a process for obtaining 3-HBDH by culturing a suitable transformed microorganism as well as a method for the determination of ketone bodies in the presence of the enzyme. A structural gene from Rhodobacter sphaeroides is preferred.

Abstract: A double pane window for an aircraft cabin has a passive air dehumidifying channel (5, 5A) that is in heat exchange contact with a window metal frame (1) which is in turn in heat exchange contact with the atmosphere outside the aircraft. The air dehumidifying channel (5, 5A) communicates through a first air flow port (6) with the cabin space and through a second air flow port (7) with a space enclosed between the double panes.

Abstract: A fluid filter having a substantially pot-shaped housing 10 in which is disposed a filter insert 11 including a pleated filter element 18 and end plates 19 and 20. The housing has a mounting flange 12 and a cover 13. The cover is connected to the mounting flange by a threaded connection or a bayonet connection. The fluid filter is attached by the mounting flange 12 to a supporting structure by at least one catch or a hinge in the form of a holding flange 29 and a projection 30.

Abstract: A double-pane aircraft cabin window arrangement avoids fogging, frosting, or icing of the window without using any active pressure regulating system or other active components. An inner pane and an outer pane are held in a window seal that is mounted in a frame connected to the aircraft fuselage. An interspace is formed between the two panes and sealed by the window seal. A condensation inducing tube is connected by a hose to an adapter tube, which passes through the window seal into the window interspace. The condensation inducing tube is connected in a direct thermally conducting manner to the outer fuselage skin of the aircraft. An open end of the condensation inducing tube is arranged to receive pressurized air from the aircraft cabin interior. As the air flows through the condensation inducing tube, any condensable moisture in the air condenses out on the interior walls of the tube, so that only dry air flows into the window interspace.

Abstract: A process for combating harmful organisms on seeds wherein said seeds are treated by irradiation with low-energy electrons in combination with application of microorganisms antagonistic to said harmful organisms.