Abstract: A scroll compressor with a backflow-proof mechanism. The scroll compressor comprises a slider disposed on a scroll couple, forming several enclosed spaces. The slider is raised by the working fluid in the spaces, preventing liquid leakage from a high-pressure chamber to a low-pressure chamber, when the scroll compressor starts. The slider descends when the compression ratio of the scroll compressor is exceeded. Thus, the pressure is released, and the performance of the scroll compressor is improved. The slider of the invention further comprises a floating element to prevent reversal of pressurized fluid and damage to the scroll couple.

Abstract: A needleless syringe particle delivery system is provided. The needleless syringe has an elongate nozzle that is connected at its upstream end to a sealed chamber. The sealed chamber contains gas at super-atmospheric pressure and particles of a therapeutic agent. Upon release of the gas from the sealed chamber, a flow is formed which entrains the particles and allows the particles to pass through the nozzle at supersonic speed for subsequent delivery to a target surface.

Abstract: The present invention relates to isolated nucleic acid molecules encoding nitric oxide synthases. The isolated nucleic acid molecules and their encoded protein or polypeptides are useful in methods for attaching a nitrogen group to a target moiety of a compound and for synthesizing a nitrogen-modified compound in a transgenic host cell. The present invention also relates to expression systems and host cells containing the nucleic acids of the present invention, as well as a method of recombinantly producing the nitric oxide synthases of the present invention.

Abstract: A system and method for achieving optimal display contrast in a mobile communication device is provided. The system includes a memory device, a processor, a display driver, and a display. A user contrast setting is stored in the memory device, wherein the user contrast setting is selected from a range of user contrast settings. The processor includes an operating system that is configured to retrieve the user contrast setting from the memory device, convert the user contrast setting into a hardware contrast setting, and save the hardware contrast setting to a memory location. The display driver retrieves the hardware contrast setting from the memory location and generates a contrast control voltage as a function of the hardware contrast setting. The display is coupled to the contrast control voltage and has a variable contrast ratio, wherein the variable contrast ratio of the display is controlled by the contrast control voltage.

Abstract: A magnetic random access memory with lower switching field is provided. The memory includes a first antiferromagnetic layer, a pinned layer formed on the first antiferromagnetic layer, a tunnel barrier layer formed on the pinned layer, a ferromagnetic free layer formed on the tunnel barrier layer, and a multi-layered metal layer. The multi-layered metal layer is formed by at least one metal layer, where the direction of the anisotropy axis of the antiferromagnetic layer and the ferromagnetic layer and that of the ferromagnetic free layer are arranged orthogonally. The provided memory has the advantage of lowering the switching field of the ferromagnetic layer, and further lowering the writing current.

Abstract: An apparatus and a method for detecting imbalances between an I-channel signal and a Q-channel signal in order to suppress a spurious signal in a direct conversion digital quadrature transmission system is disclosed. The apparatus includes: a compensation signal generating unit for generating a first and a second compensation signals based on a digital I-channel and a digital Q-channel signals; a baseband signal generating unit for generating an I-channel and a Q-channel baseband signals by converting a radio frequency signal into a low frequency signal; and a detecting unit for detecting a phase imbalance and an amplitude imbalance between the digital I-channel and the digital Q-channel signals by using a correlation between the first and the second compensation signals with the I-channel and the Q-channel baseband signals.

Abstract: The present invention discloses methods to reduce dusting in bulk materials, such as coal. The method includes mixing with the bulk material either a fraction of the bulk material having an electrostatic charge opposite that of the remainder of the bulk material or a heterologous charge control agent having an electrostatic charge opposite that of the bulk material. The attractive forces between the opposite electrostatic charges agglomerate dust particles to larger particles that quickly settle to control dusting. Also disclosed are materials produced by the methods described above.

Abstract: A process for producing a self-cross-linking alkyl cellulose derivative, which includes irradiating, with radioactive rays, a mixture of a starting alkyl cellulose derivative (the number of carbon atoms of the alkyl group is 1 through 3, the alkyl group may be substituted by a hydroxyl group or a carboxyl group, and the carboxyl group may form a salt) (100 parts by weight) and water (5–2,000 parts by weight), and thus obtained self-cross-linking alkyl cellulose derivative has an improved biodegradability and excellent water-absorbability.

Abstract: Provided is a Fabry-Perot type wavelength tunable optical filter, comprising a first mirror; a second mirror located over the first mirror; a driving body located over the first mirror, and having both ends fixed to the first mirror through a spacer; a plurality of electrodes, each formed on both ends of the driving body; a rod structure connecting a center of the driving body and the second mirror; a plurality of fixing means, each fixed to the first mirror at both sides of the rod structure through the spacer; and a plurality of elastic bodies connecting the rod structure with the plurality of fixing means and acting as a rotational axis. And the mirror is driven by the rod structure acting as a lever that has an elastic body as a rotational axis, when warping is generated by electro-thermal expansion, electromagnetic force or external force. Thereby the mirror can be driven in the larger wavelength tunable range and the low power consumption.

Abstract: A laser-based refractive surgery system includes a laser source including a laser controller, wherein at least a portion of the incident beam is directed to target eye tissue of a patient. The incident beam portion produces a reflected beam after striking the eye tissue. The system includes at least one detector for detecting the reflected beam. A computer or data processor is communicably coupled to the detector and the laser controller. The computer or data processor generates a cross-correlation function using a plurality of discrete points which digitally represent a waveform representation of the reflected beam and a plurality of reference points. The reference points are preferably associated with a digital representation of the incident beam. The laser controller receives and utilizes the cross-correlation function or parameter derived therefrom, or the ablation rate, and adjusts at least one operating parameter of the laser beam in real-time during a refractive procedure.

Abstract: A method for fabricating a MEMS device comprises providing a substrate having a back side, a front side opposite to the back side and a periphery portion. A desired microstructure is formed on the back side of the substrate. The substrate is then supported for rotation. A precursor solution is deposited on the front side of the substrate during rotation so that a thin film layer may be formed thereon. During formation of the thin film layer, the substrate is supported and rotated that the microstructure formed on the back side is protected.

Abstract: A method for direct writing an electrically conductive metallic feature on an insulating substrate comprises creating a gas jet comprising metallic particles (301), ejecting the gas jet comprising metallic particles through a straight bore tube (302), and impacting the gas jet comprising metallic particles onto a substrate to impinge the metallic particles on the substrate to form the electrically conductive metallic feature (303).

Abstract: A method encodes a video as video objects. For each candidate object, a quantizer parameter and a skip parameter that jointly minimizes an average total distortion in the video are determined while satisfying predetermined constraints. The average total distortion includes spatial distortion of coded objects and spatial and temporal distortion of uncoded objects. Then, the candidate objects is encoded as the coded objects with the quantizer parameter and the skip parameter, and the candidate objects is skipped as the uncoded objects with the skip parameter.

Abstract: The present invention is directed to a composition and method for regulating the adhesion of cells and biomolecules to hydrophobic surfaces and hydrophobic coated surfaces. The composition is a biomolecule conjugated end-group activated polymer (EGAP). The biomolecule conjugated EGAP can be put to numerous uses including cell adhesion, cell growth, cell sorting, and other biological assays.

Abstract: A method is featured for fabricating Carbon-supported AuPt nanoparticle catalysts for fuel cells, and particularly fuel cells using methanol as the fuel. The method prepares AuPt-based fuel cell catalysts having a wide range of controllable Au:Pt ratios. The AuPt catalysis are supportable on both carbon black (C) and C/TiO2 support materials. These materials demonstrate electro-catalytic activity towards CO and methanol oxidation, and O2 reduction. The same catalyst material is useful in constructing both anodes and cathodes, and demonstrates bifunctional activity.

Abstract: A method for validating untrusted authentication chip, the method includes the steps of: generating a secret random number and calculating a signature for the random number using a signature function, in a trusted authentication chip; encrypting the random number and the signature using a symmetric encryption function using a first secret key, in the trusted authentication chip; passing the encrypted random number and signature from the trusted authentication chip to an untrusted authentication chip; decrypting the encrypted random number and signature with a symmetric decryption function using the first secret key, in the untrusted authentication chip; calculating a signature for the decrypted random number using the signature function in the untrusted authentication chip; comparing the signature calculated in the untrusted authentication chip with the signature decrypted; in the event that the two signatures match, encrypting the decrypted random number together with a data message read from the untrusted c

Abstract: Cleaning compounds, apparatus, and methods to remove contaminants from a substrate surface are provided. An exemplary cleaning compound to remove particulate contaminants from a semiconductor substrate surface is provided. The cleaning compound includes a viscous liquid with a viscosity between about 1 cP to about 10,000 cP. The cleaning compound also includes a plurality of solid components dispersed in the viscous liquid, the plurality of solid components interact with the particulate contaminants on the substrate surface to remove the particulate contaminants from the substrate surface.

Abstract: A temperature regulating gel includes a hydrophilic polymeric substrate and a heat-storing material. The hydrophilic polymeric substrate may include a natural hydrogel, a synthetic hydrogel, or any combination thereof. The heat-storing material may include a phase change material, a plastic crystal, or any combination thereof. The present invention also discloses a temperature regulating article including the temperature regulating gel.

Abstract: The present invention relates to novel compounds of the general formula (I), their derivatives, analogs, tautomeric forms, stereoisomers, polymorphs, hydrates, solvates, pharmaceutically acceptable salts and compositions. The present invention more particularly provides novel HDAC inhibitors of the general formula (1). Also included is a method for treatment of cancer, psoriasis, proliferative conditions and conditions mediated by HDAC, in a mammal comprising administering an effective amount of a compound of formula (I) as described above.