478 results about "Fast flow" patented technology

Rapid characterization and screening of polymer samples to determine average molecular weight, molecular weight distribution and other properties is disclosed. Rapid flow characterization systems and methods, including liquid chromatography and flow-injection analysis systems and methods are preferably employed. High throughput, automated sampling systems and methods, high-temperature characterization systems and methods, and rapid, indirect calibration compositions and methods are also disclosed. The described methods, systems, and devices have primary applications in combinatorial polymer research and in industrial process control.

Rapid characterization and screening of polymer samples to determine average molecular weight, molecular weight distribution and other properties is disclosed. Rapid flow characterization systems and methods, including liquid chromatography and flow-injection analysis systems and methods are preferably employed. High throughput, automated sampling systems and methods, high-temperature characterization systems and methods, and rapid, indirect calibration compositions and methods are also disclosed. In preferred high-temperature embodiments, the polymer sample is maintained at a temperature of not less than about 75° C. during sample preparation, loading into a liquid chromatography or flow-injection analysis system, injection into a mobile phase of a liquid chromatography or flow-injection analysis system, and / or elution from chromatographic column. The described methods, systems, and device have primary applications in combinatorial polymer research and in industrial process control.

Rapid characterization and screening of polymer samples to determine average molecular weight, molecular weight distribution and other properties is disclosed. Rapid flow characterization systems and methods, including liquid chromatography and flow-injection analysis systems and methods are preferably employed. High throughput, automated sampling systems and methods, high-temperature characterization systems and methods, and rapid, indirect calibration compositions and methods are also disclosed. The described methods, systems, and devices have primary applications in combinatorial polymer research and in industrial process control.

Rapid characterization and screening of polymer samples to determine average molecular weight, molecular weight distribution and other properties is disclosed. Rapid flow characterization systems and methods, including liquid chromatography and flow-injection analysis systems and methods are preferably employed. High throughput, automated sampling systems and methods, high-temperature characterization systems and methods, and rapid, indirect calibration compositions and methods are also disclosed. The described methods, systems, and devices have primary applications in combinatorial polymer research and in industrial process control.

A method and apparatus for forming nonwoven melt spun webs by spinning a curtain of filaments into a pressurized chamber where they are contacted with pressurized quenching fluid, then using the fluid to draw the filaments through a slot at the bottom of the chamber. The slot is a narrow two dimensional impingement point running the length of the filament curtain where the pressurized quench fluid passes through, escaping to atmosphere. The fluid pressure (potential) energy in the chamber is exchanged for velocity (kinetic) energy at the slot impingement point. The fast moving stream of fluid inside and exiting the slot acts to pull, or draw the filaments through the slot. The fluid and fiber stream is deposited onto a porous collection conveyor belt, forming a fleece web. The invention is more efficient, less complicated, easier to maintain and easier to control than prior systems for melt spinning nonwoven webs.

Rapid characterization and screening of polymer samples to determine average molecular weight, molecular weight distribution and other properties is disclosed. Rapid flow characterization systems and methods, including liquid chromatography and flow-injection analysis systems and methods are preferably employed. High throughput, automated sampling systems and methods, high-temperature characterization systems and methods, and rapid, indirect calibration compositions and methods are also disclosed. The described methods, systems, and devices have primary applications in combinatorial polymer research and in industrial process control.

The present invention provides a system and method for processing packetized data or packets through a communications switch using a Fast Flow-Forwarding (“FFF”) system. FFF provides expedited forwarding of packets based on pattern matching and data manipulation rules that cross protocol layer boundaries. More specifically, the present invention provides a method for processing a packet in which the packet is received and processed using one or more transformation rules whenever the packet satisfies one or more identification rules. Otherwise, the packet is processed using a standard process whenever the packet does not satisfy the one or more identification rules. This method can be implemented using a computer program having a code segment to execute each step of the method.

An infusion device capable of administering liquid medication at a continuous flow rate, and upon user demand delivers a controlled volume dosage of liquid medication at a higher dosage flow rate. The dosage reservoir remains empty until the user actuates it by selectively and temporarily removing the pressure source, such as a spring. During actuation, fluid rapidly flows from the medication reservoir to fill the dosage reservoir. After actuation, the pressure source exerts a higher pressure on the dosage reservoir than the medication reservoir pressure, which results in a temporary higher bolus flow rate. Thus, two distinct flow rates are achieved with one flow restrictor element.

Rapid characterization and screening of polymer samples to determine average molecular weight, molecular weight distribution and other properties is disclosed. Rapid flow characterization systems and methods, including liquid chromatography and flow-injection analysis systems and methods are preferably employed. High throughput, automated sampling systems and methods, high-temperature characterization systems and methods, and rapid, indirect calibration compositions and methods are also disclosed. The described methods, systems, and devices have primary applications in combinatorial polymer research and in industrial process control.

Methods for making microporous polyvinylidene fluoride (PVDF) membranes from vinylidene fluoride polymers and the products produced. The PVDF microporous membranes have a significantly faster flow rate at a given pore size as compared to equally-sized microporous membranes made by conventional procedures. The PVDF microporous membranes also have significantly smaller pore sizes than conventional microporous PVDF membranes. The present membranes have unique macrostructural features responsible, in part, for their unique functional properties. The process includes dissolving the polymer in a liquid that includes a solvent and a co-solvent for the polymer. The dissolution of the polymer can be at temperatures ranging from about 20 DEG C. to about 50 DEG C. while the formation of the microporous membrane can be at temperatures ranging from about -10 DEG C. to 50 DEG C. Selection of appropriate operating parameters of temperature and solvent / co-solvent concentration can optimize the membrane at a given nominal pore size, flow rate, and polymer distribution.

The invention discloses a double-solidification system fast-flowing underfill and a preparation method thereof. The underfill comprises the following raw materials in parts by weight: 30-80% of epoxy resin, 10-50% of epoxy acrylate, 5-30% of acrylate, 2-20% of polyol, 1-20% of silane coupling agent, 0.3-4% of cationic initiator, 0.1-3% of radical initiator and 0.1-0.5% of carbon black; and the preparation method comprises the following steps of: weighing the epoxy resin and the cationic initiator in the proportion, putting in a reaction kettle and stirring into a uniform solution; weighing the epoxy acrylate, the acrylate, the polyol, the silane coupling agent, the radical initiator and the carbon black in the proportion, putting in the reaction kettle in sequence, mixing and stirring to obtain the finished product of the double-solidification system fast-flowing underfill.

The invention discloses a sea cucumber polypeptide, wherein a preparation method thereof comprises the following steps: (1) getting fresh stichopus japonicus, removing entrails, cleaning and crushing the stichopus japonicus into small blocks, and adding water to form homogenate; after the enzymolysis of the homogenate liquid, centrifugating and getting the supernatant; adding ethanol, standing, centrifugating and getting the supernatant, concentrating the supernatant at reducing pressure and drying the concentrate to form a crude product of the sea cucumber polypeptide; (2) dissolving the crude product of the sea cucumber polypeptide by using distilled water, carrying out gel filtration chromatography by Sephadex LH-20, eluting the sea cucumber polypeptide by double-distilled water, getting a second peak, collecting active components, and condensing, freezing and freeze-drying the active components; and (3) dissolving the active components by double-distilled water, carrying out ion exchange chromatography by Q Sepharose Fast Flow, linearly eluting the active components by NaCl solution, desalting, getting the second peak, collecting the active components, and condensing, freeze-drying the active components to form the sea cucumber polypeptide. The sea cucumber polypeptide can be used for preparing medicaments or health-care products for increasing leukocytes and also can be used for preparing medicaments or health-care products for multiplying marrow cells after chemotherapy.

The present invention provides composite material used for preparing fast flowing high-temperature resistant nylon, which comprises the following components: 20 to 84.9 weight portions of high-temperature resistant nylon resin and 0.1 to 10 weight portions of flowing modifier, wherein, the high-temperature resistant nylon resin is selected from the semi-aromatic nylon with the self melting point between 290 DEG C to 330 DEG C; the semi-aromatic nylon is obtained by the copolymerization of terephthalic acid or isophthalic acid, the diamine with 4 to 12 carbon atoms and the aliphatic nylon with 6 to 24 carbon atoms. The fast flowing high-temperature resistant nylon of the present invention has good heat resistance and fluidity and good chemical performance, exact formability and size stability and is mainly used for the production of thin-wall product in the electronic appliance field.

The invention provides a method for computational fluid dynamics and apparatuses making enable an efficient implementation and use of an enhanced jet-effect, either the Coanda-jet-effect, the hydrophobic jet-effect, or the waving-jet-effect, triggered by specifically shaped corpuses and tunnels. The method is based on the approaches of the kinetic theory of matter, thermodynamics, and continuum mechanics, providing generalized equations of fluid motion. The method is applicable for slow-flowing as well as fast-flowing real compressible-extendable fluids and enables optimal design of convergent-divergent nozzles, providing for the most efficient jet-thrust. The method can be applied to airfoil shape optimization for bodies flying separately and in a multi-stage cascaded sequence. The method enables apparatuses for electricity harvesting from the fluid heat-energy, providing a positive net-efficiency. The method enables efficient water-harvesting from air. The method enables generators for practical-expedient power harvesting using constructive interference of waves due to the waving jet-effect.

Reverse link flow control in a high data rate network determines current reverse link data channel rates for access terminals served by a network sector to identify corresponding defined channel gains, which are used to rapidly and reliably estimate total sector interference on the reverse link. Total sector interference indicates reverse link capacity utilization, and when remaining capacity approaches a defined threshold, the sector sets an activity indicator to a busy state indicating reverse link congestion. This action causes at least some access terminals to reduce their reverse link data channel rate. Interference calculation techniques preferably involve baseband digital processing using defined channel gains, permitting rapid evaluation of reverse link capacity and quick, reliable activity indicator updating, which increases reverse link capacity utilization. These techniques may be applied to inter-sector control, wherein the reverse activity indicator status for one sector depends on interference in one or more other sectors.

Rapid characterization and screening of polymer samples to determine average molecular weight, molecular weight distribution and other properties is disclosed. Rapid flow characterization systems and methods, including liquid chromatography and flow-injection analysis systems and methods are preferably employed. High throughput, automated sampling systems and methods, high-temperature characterization systems and methods, and rapid, indirect calibration compositions and methods are also disclosed. The described methods, systems, and devices have primary applications in combinatorial polymer research and in industrial process control.

The invention provides a method for cleaning a metal surface by short pulsed laser. The method cleans the area to be cleaned on the metal surface in a manner of round lapping irradiated by defocusing facula of laser and is characterized in that: (1) the short pulsed laser is adopted to clean the surface, wherein, the laser pulse width is less than 100ns, and the peak power density is more than 100MW / cm<2>; (2) when processed, the end face, as well as the upper surface and the lower surface near the end face, need to be cleaned, and the laser irradiates the upper surface of a sheet metal at an inclined angle of 45 - 60 degrees, with part of the laser facula being projected on the end face and the other part of the laser facula being projected on the upper surface; mainly aiming at meeting the requirements for cleaning a thin layer of oxide film on the surface of titanium alloy, aluminum alloy and the like before welding, the method can obtain higher surface cleaning quality than the conventional laser cleaning method and faster process flow than acid cleaning method, is suitable for rapid treatment of laser processing, and has good reference value for the fast flow of processing production line and wide applicability.

An air handling system for a building having a ceiling and enclosed space, the system including four interconnected induction units for mounting adjacent the ceiling. These units form four sides of a rectangular assembly. Each induction unit includes an air plenum section and an air mixing section connected to a side of the air plenum section and forming an elongate air mixing chamber that extends downwardly to an air outlet. Supporting members mount the induction unit assembly at the ceiling so that each air mixing section when viewed in transverse, vertical cross-section extends at a substantial angle, which in a preferred embodiment is about 90 degrees, to the ceiling during use of the apparatus. Return air is drawn by venturi effect created by a fast flow of primary air into each air mixing chamber and heated or cooled at the heat exchanging coils. The units can provide a mixed air flow that flows downwardly from the outlets.

Systems and methods for heat exchange in accordance with the invention define adequately long-interchange distances for two fluids by wrapping a tube containing a first fluid about the wall of an inner cylindrical tank, within a gap formed with a second concentric tank. A second fluid is transmitted in the space defined between the turns of the tube and the two walls, providing effective short length thermal interchange through the tube walls. The tube is in the line contact with both tank walls and the fluids can flow rapidly over an adequately long length, so that high efficiency is provided in a low cost system.

A microimmunoassay arrangement including paramagnetic particles having labeled antibody held in a microchannel by an external magnetic field provides rapid analysis using small sample volumes.

The invention discloses a room-temperature self-repairing fiber-reinforced epoxy composite material and a preparation method thereof. According to the method, a repairing agent is loaded in a capillary tube, and buried among fiber-reinforced epoxy composite material layers, and the repairing agent contains a certain amount of foaming agent. After being formed, the composite material is heated above the decomposition temperature of the foaming agent, so that the interior of the capillary tube produces positive pressure. When the material is damaged to cause the breakage of the capillary tube, the repairing agent can fast flow to a breakage surface and produce reaction under the promotion of pressure, thus rebinding cracks together and repairing the damage of the material. The material has the outstanding characteristics that the capillary tube can provide enough repairing agent, so that the material has higher repair efficiency; through the introduction of the foaming agent, the repairing agent in the capillary tube can be guaranteed to fast flow automatically when the material is damaged.

The invention discloses a viscosity reduction-type polycarboxylate water-reducer and a preparation method thereof. The viscosity reduction-type polycarboxylate water-reducer is prepared by a nonsaturated polyether monomer, a nonsaturated acid anhydride monomer, a bifunctional nonsaturated carboxylate monomer and a nonsaturated phosphate ester monomer with mol ratio of 1:3:0.05-0.5:0.05-0.2 through an aqueous free radical copolymerization reaction. The viscosity reduction-type polycarboxylate water-reducer has the advantages of high water-reducing rate and slump retaining performance, can effectively reduce the concrete viscosity, improves concrete workability, materials softness, and fast flow velocity, and can improve the concrete construction performance.