Abstract: A broadband radio frequency signal optical fiber phase-stable transmission system includes a local end and a remote end connected by a dispersion compensation module and an optical fiber. The local end modulates a first auxiliary signal whose frequency is half of the frequency of the to-be-transmitted signal and a second auxiliary signal whose frequency is 1.5 times the frequency of the to-be-transmitted signal through the optical carrier and filters out a lower sideband to obtain an optical signal containing only the optical carrier, a first signal, and a second signal corresponds to the optical signal of the first-order upper sideband. The optical signal is transmitted to the remote end through the dispersion compensation module and the optical fiber.

Abstract: A laundry or fabric cleaning composition that comprises a surfactant blend that includes a nonionic alkyl polyglucoside, and a functionalized alkyl polyglucoside component.

Abstract: The present invention relates to a preparation method of a highly aromatic hydrocarbon hydrogenated resin, comprising the processes of fraction cutting, pretreatment, catalytic polymerization, two-stage hydrogenation, etc. The highly aromatic hydrocarbon hydrogenated resin obtained by the present invention has excellent compatibility with elastomers such as SBS, SIS and the like, and is suitable for hot melt adhesives, coatings, rubber modification, etc.

Abstract: An aqueous based drilling fluid that exhibits improved lubricity, containing a phospholipid lubricant component and methods of improving the lubricity of an aqueous based drilling fluids. The methods include improving the lubricity of an aqueous based drilling fluid composed of an aqueous base fluid, and a weighting agent, with the addition of an effective amount of a phospholipid to substantially reduce the coefficient of friction when compared to the fluid absent the phospholipids.

Abstract: A cleaning composition that comprises a nonionic sorbitan alkyl polyglucoside crosspolymer, at least one functionalized alkyl polyglucoside, a water conditioning agent, water, and an acid source.

Abstract: A switch for a track of a maglev train is provided. The switch comprises a front main track beam and a rear switching track beam. The rear switching track beam comprises a central fixed track beam and a middle mobile track beam; the front main track beam can switch between a straight track and a bent track by bending; the central fixed track beam is a fixed track beam; and the middle mobile track beam can move parallelly between the straight track and the bent track. The imposed deformation length and driving weight of the switch is minimised by providing the middle mobile track beam, and the required track switching time is shortened.

Abstract: A biodegradable amphoteric surfactant is disclosed. The surfactant, has excellent coupling efficiency, low to moderate foam, and good detergency. Amphoteric surfactants based on linear alkyl radicals or predominately linear alkyl radicals (R) of 6 to 11 carbons, and mixtures thereof are also disclosed.