Abstract: The present invention discloses a method for purifying oxidized form of ?-nicotinamide adenine dinucleotide, comprising the steps of: sequentially microfiltrating and nanofiltrating a reaction solution obtained after an enzymatic reaction by using filteration membranes, to collect a concentrate for use; then adding an acid to the concentrated filtrate, to adjust the pH of the concentrate, and purifying by gradient elution using a reverse-phase chromatographic column as a stationary phase, a buffer solution as a phase A, and ethanol as a phase B; and concentrating the purified solution by nanofiltrating it with a filtration membrance, and then freeze drying it in a vacuum freeze drier. In the present invention, the oxidized form of ?-nicotinamide adenine dinucleotide is purified by reverse phase high performance liquid chromatography, such that the oxidized form of ?-nicotinamide adenine dinucleotide has a high purity and high yield, thus meeting the requirements in industry.

Abstract: A method for high temperature bonding of substrates may include providing first and second substrates and forming at least one trace onto one or more adjacent surfaces of the substrates. The trace may include at least a first configuration of a material having a high melting temperature. The material may include at least one or more chemical elements selected from a group consisting of nickel, silver, aluminum, and copper. The method may further include depositing tin on a top surface of the trace and bonding the substrates together to create a bond layer using a high temperature bonding process. The top surface of the trace may be disposable between the substrates. The trace may be incorporated into the bond layer that is dispersed between aligned and adjacent surfaces of the substrates. The first configuration may form one or more intermetallic bonds in the bond layer.

Abstract: Aspects of the disclosure provide a power circuit that includes a first switch module and a second switch module in parallel. The first switch module has a first gate terminal, a first drain terminal and a first source terminal, and the second switch module has a second gate terminal, a second drain terminal and a second source terminal. A drain interconnection module coupled to the first drain terminal and a gate interconnection module coupled to the second gate terminal are inductively coupled to balance current flowing through the first switch module and the second switch module.

Abstract: Systems and methods are provided for performing field enhanced separations on a feed, such as a petroleum feed, a refinery feed, or another type of hydrocarbonaceous feed. The system can allow for increased throughput of feed per volume of the separation device or system while performing a desired amount of field enhanced separation. The field enhanced separation can include separation by thermal diffusion, optionally enhanced by the presence of an electric field in the channel for performing the separation by thermal diffusion.

Abstract: A system for the on demand delivery of a liquid mixture to an on/off dispenser comprises a mixing chamber having first and second inlets and an outlet connected to the dispenser. A first constant flow valve has a first outlet connected to the first inlet via a first supply line. The first constant flow valve is adapted to deliver a first liquid to the mixing chamber at a first substantially constant pressure. A second constant flow valve has a second outlet connected to the second inlet via a second supply line. The size of the second inlet is at least as large as the size of the second outlet. The second constant flow valve is adapted to deliver a second liquid to the mixing chamber at a second pressure greater than the first pressure, with the second pressure being determined primarily by the flow resistance of the second supply line. At least one of the first and second liquids, or a third liquid delivered to the mixing chamber via a third supply line, may be atomized.

Abstract: A die cushion force control method and a die cushion apparatus generates a die cushion force on a cushion pad based on a die cushion force command value set in advance. A die cushion force command value equal to or larger than a target die cushion force command value is outputted initially in order to suppress an initial die cushion force overshoot generated when the target die cushion force command value configured to be stepwise is used as the die cushion force command value, then a die cushion force command value decreased continuously (gradually) so as to be smaller than the target die cushion force command value is outputted, and subsequently a die cushion force command value increasing gradually so as to be equal to the target die cushion force command value is outputted.

Abstract: A liquid confinement member supplies liquid to and collects the liquid from a liquid immersion area formed adjacent to a final optical element of an immersion exposure apparatus, and includes a channel formation member that surrounds a portion of the final optical element of the immersion exposure apparatus. The channel formation member includes a hole through which exposure light projected by the final optical element passes, a liquid supply opening through which the liquid is supplied to the liquid immersion area, a liquid recovery opening through which the liquid is recovered from the liquid immersion area, a liquid supply channel by which the liquid is supplied to the liquid supply opening, and a liquid recovery channel by which the liquid is recovered from the liquid recovery opening. At least one of the liquid supply and liquid recovery channels includes a protrusion into a portion of the channel.

Abstract: A progressive release or multi-point engagement device according to aspect of the present disclosure includes a first component and a second component connected to the first component with a canted coil spring. The first component is movable relative to the second component and latch by moving the canted coil spring to a second common groove. Alternatively, a second spring is used to move the second component and relative to a third component. When a second engagement position is desired, a relatively higher a force may be necessary to move the relevant component.

Abstract: A method for determining the amount and rate of corrosion which has occurred on the surface of a process unit by measuring corrosion with a corrosion sensor and measuring at least one parameter inside the process unit. Corrosion on the internal surfaces of a process unit can then be determined.

Abstract: A grating structure and a solar cell assembly. In one aspect, the grating structure suppresses the zero order transmission to near 0%. In another aspect, the solar cell assembly has improved absorption due to coupling with a grating structure.

Abstract: Apparatus and methods related to damping testing are disclosed. For example, some embodiments may contain a testing platform supported on wheels and moveable by hydraulic cylinders, and two fasteners for fastening the testing sample, one fixed on the testing platform and the other moveable along the testing platform by another hydraulic cylinder, and may be used for the damping testing of slender structures such as umbilicals and flexibles used in oil and gas underwater field development.

Abstract: System and method for detecting a leak in a pipeline with a sensing cable including an optical fiber sensor array aligned with a heating element. At least one heat pulse is propagated through the heating element along at least a portion of the sensing cable to affect an exchange of thermal energy between the heating element and fluid exposed to the sensing cable. A temperature profile of the sensing cable corresponding to the heat pulse at each of a plurality of sensor locations on the optical fiber sensor array is measured over time. A leak in a pipeline is detected by determining one or more properties of the fluid exposed to the sensing cable at each of the plurality of sensor locations based on the temperature profile corresponding thereto.

Abstract: An improved method and process unit for desalting petroleum crude oils in which a portion of the stable emulsion layer which forms in the desalter vessel is withdrawn from the desalter and diluted with a liquid diluent, typically oil or water or both to destabilize the emulsion which is then separated into separate oil and water phases.

Abstract: The invention is directed to a drill system that better uses the power curve of modern machine tools. The drill system uses a two-step drill, utilizing IC inserts to perform the major hole diameter cutting, and a central drilling system. In examples, the IC inserts can be set in a drill head in a single or double effective configuration. A central drilling system cuts the remaining minor diameter portion of the hole, and is configured to see less cutting surface footage, due to its position from the rotating center of the tool. The central drilling system may include a “self-centering” geometry, such that the drill head of the tool with be guided throughout the depth of the hole. The drill system allows for a large diameter deep hole that remains straight throughout to be drilled at higher speed and lighter feed rates thus offering a more productive tool that takes advantage of the power curves and lower thrust capabilities of modern machine tools.

Abstract: Provided is a polypropylene resin composition. The polypropylene resin composition includes: from about 20 to about 80 parts by weight of a polypropylene resin; from about 1 to about 35 parts by weight of an amine-based kenaf master batch; and from about 1 to about 25 parts by weight of a vinyl-based acetal compatibilizer. Also disclosed is the polypropylene resin composition which is used for vehicle interior and exterior materials, thereby improving physical properties such as low-temperature properties and tensile strength and providing superior resistance against damages.

Abstract: The invention relates to a vibration isolator that includes a coil spring. In a horizontal direction, the coil spring is stiffly coupled to the base or to the load to be isolated.

Abstract: Systems and methods are provided for slurry hydroconversion of a heavy oil feed, such as an atmospheric or vacuum resid. The systems and methods allow for slurry hydroconversion using catalysts with enhanced activity. The catalysts with enhanced activity can be used in conjunction with demetallization catalysts or catalysts that can be recycled as a side product from a complementary refinery process.

Abstract: Optical devices using double-groove diffraction gratings having periodic sets of TiO2 elements on one or more surfaces of an SiO2 substrate are disclosed. First order components of incident polarized light coupled into the substrate are reflected so as to propagate through the substrate to terminus points where they either change direction for further propagation or exit the substrate. A windshield display system using the principles of the invention is disclosed.

Abstract: A system for dissipating thermal energy from an enclosure includes a gusset having a base engagement face and an enclosure engagement face that may be removably coupled with the enclosure. In some embodiments, a heat pipe extends along a gusset frame between portions of the base engagement face and the enclosure engagement face. The heat pipe is angularly shaped in various embodiments and is thermally coupled with the base engagement face and the enclosure engagement face. In some embodiments, the heat pipe is coupled within a heat pipe channel that extends along a length of the gusset.

Abstract: A coupling key for fixedly coupling a driveshaft to a rotating component of a measurement while drilling telemetry apparatus comprises a key body and at least one zero backlash ring. The key body has dimensions selected to fit within a keyhole of a driveshaft and a receptacle of a rotating component, with a gap that is large enough that the key body can be freely inserted into the keyhole and receptacle and small enough that the coupling body can couple the driveshaft to the rotating component in a rotational direction. The least one zero backlash ring extends around the key body and protrudes from surfaces of the key body and into the gap such that an interference fit is established between the coupling key, the keyhole, and the receptacle when the coupling key is coupling the driveshaft and rotating component together.