Abstract:
A process for producing a rotor, the rotor formed thereby, as well as turbines in which such a rotor is installed. The rotor is formed by casting an ingot to have first and second regions formed of different alloys that intermix during casting to define a transition zone therebetween. The ingot is forged to yield a rotor forging that contains axially-aligned first and second alloy regions and a transition zone therebetween. The effects of the transition zone can be mitigated by modeling the transition zone and then off-center machining the forging so that the axis of rotation of the machined monolithic rotor is more centrally located with respect to the transition zone.
Abstract:
Oriented longitudinal magnetic recording media on direct texture glass or glass-ceramic substrate with a film structure of one or more Ni-containing layer, a Cr-containing underlayer, a Co-containing magnetic layer and carbon overcoat exhibits are capable of achieving Mrt OR of >1.5, preferably >1.85. Such highly oriented glass media shows a significant SNR (>2 dB) and parametric improvement over the counterpart isotropic media with the same film structure on non-textured glass or glass-ceramic substrates.
Abstract:
A dust protector includes a plurality of pleated units. Each pleated unit has a first and a second hollow truncated cone-shaped member. The converging ends of the first and second truncated cone-shaped members are joined together. The diverging end of the first truncated cone-shaped member has a first flange with annular groove which is engageable with a second flange of the diverging end of an adjacent second truncated cone-shaped member.
Abstract:
An automatic raising apparatus includes a hollow cylinder having a partition member separating said cylinder into a first chamber and a second chamber. A floating piston is mounted in said second chamber defining a third chamber. A sleeve member is mounted slidably and coaxially in said cylinder and has a first end connected with an article to be raised or lowered and an open second end extending through the partition member into the second chamber. The sleeve member has an axial bore which is opened toward the second chamber, and a radial hole formed thereon communicating the bore and the first chamber. A yieldably resilient member is mounted or contained in the third chamber biasing the floating piston to cause the sleeve member to move outward relative to cylinder. Fluid fills the first and second chambers and the bore of the sleeve member. A piston member is annularly fixed to the sleeve member in the first chamber and is sealed and slidably engaged with an inner surface of the cylinder in the first chamber. A stop valve device is provided for being manually closed and opened to alternately to stop and permit fluid flow between the first chamber and the second chamber. Whereby, the article to be raised and lowered can be held at a desired height by controlling the stop valve device during the raising or lowering operation.
Abstract:
A hydraulic automatically ascending apparatus includes a hydraulic cylinder including a piston and a piston rod which extends from the piston to connect with an article, a volume-variable oil tank, an elastometric body for biasing the oil tank to retract, an oil pipe for intercommunicating with the hydraulic cylinder and the oil tank, and a stop valve mounted in the oil pipe for being manually closed to stop oil flow between the hydraulic cylinder and the oil tank. When the stop valve is opened and when the article is loaded, the article can be descended and thus positioned at a desired position. When the stop valve is opened and when the article is unloaded, the article can be ascended to an upper limit position. A throttle valve is preferably installed within the oil pipe for slowing the movement of the piston rod.
Abstract:
This invention provides methods for dynamic estimation of the open-circuit voltage of a battery. In some embodiments, an impulse response is calculated using a matrix-based algorithm or a recursive algorithm. Then, a current response is calculated by convolving the impulse response with the measured current. The open-circuit voltage of the battery is derived by subtracting the current response from the measured voltage. Using the principles disclosed to estimate OCV, a lithium-ion battery may be managed with a battery-state estimator that allows accurate and timely estimation of the state of charge, the charge and the discharge power capabilities, and the state of health of the battery. These methods are able to accept various exciting signals, are stable and robust against noises, even when diffusion is a limiting kinetic factor in the battery.
Abstract:
A thermomagnetic sensor includes a thermomagnetic probe that includes a ferromagnetic material having a temperature-dependent magnetic permeability characterized by a maximum magnetic permeability value at a temperature below a Curie temperature of the ferromagnetic material. The thermomagnetic sensor further includes an alternating magnetic field source to produce an alternating magnetic field in a vicinity of the thermomagnetic probe to facilitate a measurement of the temperature-dependent magnetic permeability as function of temperature remotely using a thermomagnetic effect. A predetermined relationship between the temperature-dependent magnetic permeability and temperature in a range between the maximum magnetic permeability value and the Curie temperature provides a measurement of a temperature local to the thermomagnetic probe. A battery-temperature measurement system includes the thermomagnetic probe in a battery, a magnetic field coil to apply the alternating magnetic field, and a magnetic permeability measurement apparatus to measure the temperature-dependent magnetic permeability.
Abstract:
A network update interface is presented to a user on a network to display network updates from other users of a mutual social-networking site. The network updates shared by the other users are gathered in a stream and supplied to a facet-filtering system including a network update interface. The user controls the display of certain network update items according to facet-filter characteristics enabled in facet-filter selection panels in the network update interface. The facet-filter characteristics are used by a facet filter to select certain network updates for display to the user in the network update interface. Trending links to further articles with content corresponding to the facet-filter characteristics are displayed to the user according to greatest popularity among the other users. Links to the profiles of the users sharing the articles are also provided in the network update interface.
Abstract:
A mesoporous, nanocrystalline, metal oxide construct particularly suited for capacitive energy storage that has an architecture with short diffusion path lengths and large surface areas and a method for production are provided. Energy density is substantially increased without compromising the capacitive charge storage kinetics and electrode demonstrates long term cycling stability. Charge storage devices with electrodes using the construct can use three different charge storage mechanisms immersed in an electrolyte: (1) cations can be stored in a thin double layer at the electrode/electrolyte interface (non-faradaic mechanism); (2) cations can interact with the bulk of an electroactive material which then undergoes a redox reaction or phase change, as in conventional batteries (faradaic mechanism); or (3) cations can electrochemically adsorb onto the surface of a material through charge transfer processes (faradaic mechanism).