Methods for preparing isotopically modified 1,4-diene systems from non-isotopically modified 1,4-dienes involve selective oxidation of one or more bis-allylic position(s), or the preparation of isotopically modified 1,4-diene systems via trapping pi-allylic complexes with a source of deuterium or tritium. Such methods are useful for preparing isotopically modified polyunsaturated lipid including polyunsaturated fatty acids and polyunsaturated fatty acid derivatives.

Methods for preparing isotopically modified 1,4-diene systems from non-isotopically modified 1,4-dienes involve selective oxidation of one or more bis-allylic position(s), or the preparation of isotopically modified 1,4-diene systems via trapping pi-allylic complexes with a source of deuterium or tritium. Such methods are useful for preparing isotopically modified polyunsaturated lipid including polyunsaturated fatty acids and polyunsaturated fatty acid derivatives.

Methods for preparing isotopically modified 1,4-diene systems from non-isotopically modified 1,4-dienes involve selective oxidation of one or more bis-allylic position(s), or the preparation of isotopically modified 1,4-diene systems via trapping pi-allylic complexes with a source of deuterium or tritium. Such methods are useful for preparing isotopically modified polyunsaturated lipid including polyunsaturated fatty acids and polyunsaturated fatty acid derivatives.

Methods for preparing isotopically modified 1,4-diene systems from non-isotopically modified 1,4-dienes involve selective oxidation of one or more bis-allylic position(s), or the preparation of isotopically modified 1,4-diene systems via trapping pi-allylic complexes with a source of deuterium or tritium. Such methods are useful for preparing isotopically modified polyunsaturated lipid including polyunsaturated fatty acids and polyunsaturated fatty acid derivatives.

Methods for preparing isotopically modified 1,4-diene systems from non-isotopically modified 1,4-dienes involve selective oxidation of one or more bis-allylic position(s), or the preparation of isotopically modified 1,4-diene systems via trapping pi-allylic complexes with a source of deuterium or tritium. Such methods are useful for preparing isotopically modified polyunsaturated lipid including polyunsaturated fatty acids and polyunsaturated fatty acid derivatives.

Embodiments of the present invention provide a method, system and computer program product for structural damage detection in a vehicle. The method includes detecting a change in tension of a wire coupled to two different nodes of a multiplicity of nodes tethered to one another by way of tensioned wires and affixed to a portion of a vehicle. Thereafter, in response to the detection, data is uploaded that includes the change in tension to a computer remote form the vehicle over a computer communications network.

Systems and methods for integrating data related to aircraft operations such as data from flight logs, flight tracker, maintenance, connectivity, router into modules, for a specific aircraft that can be communicated to and displayed on a single device display in real-time. Systems and methods for integrating data related to aircraft operations into modules, that is both aircraft-specific (engine data, take-off and landing times) and personnel specific (i.e. crew scheduling, passenger manifestos), that includes a web-based interface which incorporates multiple data fields, and can display and communicate on devices, including but not limited to desktop computers, portable devices, such as smart phones, tablets and laptops.

Described are membranes for separating olefins from a mixture that includes olefins and non-olefins. The membrane includes polymers and metal ions associated with the polymers. The metal ions mediate the transport of the olefins through the membrane by selectively and reversibly coupling with the olefins. The olefin/non-olefin selectivity of the membrane remains within at least 80% of its original selectivity after 200 hours of exposure of the membrane to a stream of hydrogen gas, 100 hours of exposure to a stream of acetylene gas, and 100 hours of exposure to a stream of hydrogen sulfide gas. Additional embodiments of the present disclosure pertain to methods of utilizing the membranes of the present disclosure to separate olefins from a mixture that includes olefins and non-olefins.

Described are membranes for separating olefins from a mixture that includes olefins and non-olefins. The membrane includes polymers and metal ions associated with the polymers. The metal ions mediate the transport of the olefins through the membrane by selectively and reversibly coupling with the olefins. The olefin/non-olefin selectivity of the membrane remains within at least 80% of its original selectivity after 200 hours of exposure of the membrane to a stream of hydrogen gas, 100 hours of exposure to a stream of acetylene gas, and 100 hours of exposure to a stream of hydrogen sulfide gas. Additional embodiments of the present disclosure pertain to methods of utilizing the membranes of the present disclosure to separate olefins from a mixture that includes olefins and non-olefins.

A process is described for treating a natural gas stream containing methane and one or more higher hydrocarbons including the steps of mixing at least a portion of the natural gas stream with steam; passing the mixture adiabatically over a supported precious metal reforming catalyst to generate a reformed gas mixture comprising methane, steam, carbon dioxide, carbon monoxide and hydrogen; cooling the reformed gas mixture to below the dew point to condense water and removing the condensate to provide a de-watered reformed gas mixture, and passing the de-watered reformed gas mixture through an acid gas recovery unit to remove carbon dioxide and at least a portion of the hydrogen and carbon monoxide, thereby generating a methane stream. The methane stream may be used to adjust the composition of a natural gas stream, including a vaporized LNG stream, to meet pipeline specifications.