Abstract: The invention provides an apparatus for polymer chromatography, comprising at least one column that comprises a first stationary phase comprising one of the following: A) a material comprising at least one non-carbon atom, excluding glass or a metal, selected from molybdenum sulfide MoS2, tungsten sulfide WS2, silicon carbide SiC, boron nitride BN, or combinations thereof, or B) glass, or a metal, or combinations thereof, and a material comprising at least one non-carbon atom selected from molybdenum sulfide MoS2, tungsten sulfide WS2, silicon carbide SiC, boron nitride BN, or combinations thereof. The invention also provides a method for polymer chromatography, comprising introducing a solution, comprising a polymer, into a liquid flowing through a first stationary phase, and wherein the first stationary phase comprises one of foregoing materials (A) or (B).

Abstract: The present application provides an automatic non-woven fabric laying device. The device includes a non-woven fabric lifting mechanism, traction manipulators, a cutting manipulator, guide rollers, guide plates and the like. By recognizing the width and diameter parameters of a hub, the non-woven fabric lifting mechanism and the traction manipulators respectively adjust the height, the traction manipulators adjust the traction length of a non-woven fabric, and the cutting manipulator cuts the non-woven fabric after the length of the non-woven fabric is determined, thereby completing automatic laying of the non-woven fabric.

Abstract: The present application provides a leak hole leak rate detection device and a method for implementing leak hole leak rate detection using the device. The device includes a gas storage tank, a valve, a leak hole, a latex sealing container, an electronic stopwatch and an electronic balance. The device can detect the leak rates of leak holes within a range of 1×10?1˜1×10?8 Pa·m3/s, and has the characteristics of scientific detection principle, simple and reasonable structure and the like.

Abstract: An ethylene/?-olefin copolymer comprising units derived from ethylene; and units derived from at least one ?-olefin; wherein the ethylene/?-olefin copolymer has a density in the range of from 0.90 to 0.94 g/cc; a melt index (I2) in the range of from 0.05 to 50 dg/min; an Mw/Mn of from 3 to 5; and from 300 to 500 vinyl unsaturations per 1,000,000 carbon atoms in the ethylene/?-olefin copolymer is provided. Also provided is a process for producing an ethylene/?-olefin copolymer comprising: (1) polymerizing ethylene and one or more ?-olefins in a polymerization reactor; (2) thereby producing an enhanced melt strength ethylene/?-olefin copolymer having from 300 to 500 vinyl unsaturation units per 1,000,000 carbon atoms, a density in the range of from 0.90 to 0.94 g/cc; a melt index (I2) in the range of from 0.05 to 50 dg/min; and a Mw/Mn of from 3 to 5.

Abstract: In one aspect, the present disclosure provides methods of preparing a primary or secondary amine and hydroxylated aromatic compounds. In some embodiments, the aromatic compound may be unsubstituted, substituted, or contain one or more heteroatoms within the rings of the aromatic compound. The methods described herein may be carried out without the need for transition metal catalysts or harsh reaction conditions.

Abstract: An ethylene/?-olefin copolymer comprising units derived from ethylene; and units derived from at least one ?-olefin; wherein the ethylene/?-olefin copolymer has a density in the range of from 0.90 to 0.94 g/cc; a melt index (I2) in the range of from 0.05 to 50 dg/min; an Mw/Mn of from 3 to 5; and from 300 to 500 vinyl unsaturations per 1,000,000 carbon atoms in the ethylene/?-olefin copolymer is provided. Also provided is a process for producing an ethylene/?-olefin copolymer comprising: (1) polymerizing ethylene and one or more ?-olefins in a polymerization reactor; (2) thereby producing an enhanced melt strength ethylene/?-olefin copolymer having from 300 to 500 vinyl unsaturation units per 1,000,000 carbon atoms, a density in the range of from 0.90 to 0.94 g/cc; a melt index (I2) in the range of from 0.05 to 50 dg/min; and a Mw/Mn of from 3 to 5.

Abstract: An ethylene/?-olefin copolymer comprising units derived from ethylene; and units derived from at least one ?-olefin; wherein the ethylene/?-olefin copolymer has a density in the range of from 0.90 to 0.94 g/cc; a melt index (I2) in the range of from 0.05 to 50 dg/min; an Mw/Mn of from 3 to 5; and from 300 to 500 vinyl unsaturations per 1,000,000 carbon atoms in the ethylene/?-olefin copolymer is provided. Also provided is a process for producing an ethylene/?-olefin copolymer comprising: (1) polymerizing ethylene and one or more ?-olefins in a polymerization reactor; (2) thereby producing an enhanced melt strength ethylene/?-olefin copolymer having from 300 to 500 vinyl unsaturation units per 1,000,000 carbon atoms, a density in the range of from 0.90 to 0.94 g/cc; a melt index (I2) in the range of from 0.05 to 50 dg/min; and a Mw/Mn of from 3 to 5.

Abstract: A traffic forwarding method and system based on a virtual switch cluster is described. The method includes setting an aggregation group member list to store information about all the members of an aggregation group; setting an aggregation group traffic forwarding member list to store information of aggregation group members for forwarding traffic, wherein the list in an initial state only containing information about local members of the aggregation group; and when it is determined that traffic of a physical device exceeds the total bandwidth of the members in the aggregation group traffic forwarding member list or a threshold value related to the total bandwidth, selecting a nonlocal member from the aggregation group member list and adding the same into the aggregation group traffic forwarding member list, and forwarding traffic according to the changed aggregation group traffic forwarding member list.

Abstract: A bitumen transport composition is provided comprising bitumen, a diluent in an amount of 24 weight percent or less and an additive wherein the additive is a mono-alcohol, a mono-nitrile, an amine or mixtures thereof. Also provided is a method to make the bitumen transport composition. Also provided is a method to transport the bitumen transport composition.

Abstract: A traffic forwarding method based on a virtual switch cluster is described. The method includes setting an aggregation group member list to store information about all the members of an aggregation group; setting an aggregation group traffic forwarding member list to store information of aggregation group members for forwarding traffic, wherein the list in an initial state only containing information about local members of the aggregation group; and when it is determined that traffic of a physical device exceeds the total bandwidth of the members in the aggregation group traffic forwarding member list or a threshold value related to the total bandwidth, selecting a nonlocal member from the aggregation group member list and adding the same into the aggregation group traffic forwarding member list, and forwarding traffic according to the changed aggregation group traffic forwarding member list. A traffic forwarding system based on a virtual switch cluster is also described.

Abstract: The invention provides an apparatus for polymer chromatography, comprising at least one column that comprises a first stationary phase comprising one of the following: A) a material comprising at least one non-carbon atom, excluding glass or a metal, selected from molybdenum sulfide MoS2, tungsten sulfide WS2, silicon carbide SiC, boron nitride BN, or combinations thereof, or B) glass, or a metal, or combinations thereof, and a material comprising at least one non-carbon atom selected from molybdenum sulfide MoS2, tungsten sulfide WS2, silicon carbide SiC, boron nitride BN, or combinations thereof. The invention also provides a method for polymer chromatography, comprising introducing a solution, comprising a polymer, into a liquid flowing through a first stationary phase, and wherein the first stationary phase comprises one of foregoing materials (A) or (B).

Abstract: An ethylene/?-olefin copolymer comprising units derived from ethylene; and units derived from at least one ?-olefin; wherein the ethylene/?-olefin copolymer has a density in the range of from 0.90 to 0.94 g/cc; a melt index (I2) in the range of from 0.05 to 50 dg/min; an Mw/Mn of from 3 to 5; and from 300 to 500 vinyl unsaturations per 1,000,000 carbon atoms in the ethylene/?-olefin copolymer is provided. Also provided is a process for producing an ethylene/?-olefin copolymer comprising: (1) polymerizing ethylene and one or more ?-olefins in a polymerization reactor; (2) thereby producing an enhanced melt strength ethylene/?-olefin copolymer having from 300 to 500 vinyl unsaturation units per 1,000,000 carbon atoms, a density in the range of from 0.90 to 0.94 g/cc; a melt index (I2) in the range of from 0.05 to 50 dg/min; and a Mw/Mn of from 3 to 5.

Abstract: The present invention provides a method producing a modified assembly line, such as those that produce non-ribosomal peptides and polyketides. The modified assembly lines of the invention can be used to produce novel compounds with therapeutic activities. The invention also provides organisms containing modified assembly lines and libraries of modified assembly lines.