Abstract: Genetically modified microorganisms that have the ability to convert carbon substrates into chemical products such as 2,3-BDO are disclosed. For example, genetically modified methanotrophs that are capable of generating 2,3-BDO at high titers from a methane source are disclosed. Methods of making these genetically modified microorganisms and methods of using them are also disclosed.

Abstract: A fluid dispenser apparatus for use in cleaning surfaces of electrical printing apparata, among other surfaces, is provided for exchangable attachment to a fluid container. The apparatus includes a removable tube for extended and directed delivery and placement of the fluid, on the surface being cleaned. An applicator plate, supporting a densely formed, replaceable sponge, is located at the end of the tube to collect and help keep the fluid in a liquid state to facilitate application and scrubbing therewith. A pushbutton valve permits selective, variable control of the flow rate of the fluid. A vent may be alternatively provided to improve back pressure in the fluid dispenser apparatus and improve its dispensing characteristics. The apparatus is configured for facilitated assembly and disassembly for facilitated cleaning of the pushbutton valve.

Abstract: Stopping system for the drive mechanism of a records-player, comprising a pivotable aperture linked with the playback arm, fixed to a sector, and possessing a light/dark zone towards the end of its pivoting range. This zone is scanned by a photoelectric barrier in the sharp range and issues the stop command by means of an evaluation logic.