Abstract: An impeller for fuel pumps of automobiles, which maximizes the amount of fuel discharge of the fuel pumps by controlling the fuel inlet angle and the fuel outlet angle of the blades of the impeller, thus providing high operational pressures of the fuel pumps and improving operational performances of the fuel pumps, is disclosed. The impeller has a disc-shaped body, with a plurality of blades each having an inclined surface and provided around an outer edge of the disc-shaped body while being spaced out at regular intervals, and a plurality of impeller chambers defined between the blades while being vertically formed through the disc-shaped body to allow fuel to flow into and out of the chambers due to a high-speed rotating force of the impeller. The impeller further includes an inlet guide surface provided on each of the blades within a fuel inlet region of each of the impeller chambers, with a first angle defined between a vertical plane of the impeller and the inlet guide surface.

Abstract: An improved and distinctive servo-controller scheme resulting in an overall improvement in PES performance, particularly when applied to hard disk drives employing the invention's TMR reduction mechanisms. The servo-controllers trade off gain in the disk vibration frequency range, in favor of, increased rejection of low frequency disturbances. This leads to the lowest PES statistics, when applied to hard disk drives with the TMR reduction mechanisms of the invention. Improved head gimbal assemblies reducing TMR (Track Mis-Registration) in a hard disk drive are provided. These head gimbal assemblies are as mechanically simple as contemporary head gimbal assemblies, support parallel flying sliders over flat disk surfaces, and reduce TMR induced by disk vibration. They are easier to build, more reliable, and cost less to make, than other known approaches at comparable track densities and rotational rates.

Abstract: An optical detection device for biochemically analyzing samples of microfluidic chips such as DNA chips or protein chips is provided. The optical detection device includes a light source for generating excitation light to excite a sample, a detection plate having an optical waveguide with the sample mounted thereon, a linear symmetry lens for shaping the excitation light into a desired shape having a uniform intensity distribution and transmitting it to the detection plate, and a detector for detecting radiation from the sample.

Abstract: Improved head gimbal assemblies reducing TMR (Track Mis-Registration) in a hard disk drive are provided. These head gimbal assemblies are as mechanically simple as contemporary head gimbal assemblies, support parallel flying sliders over flat disk surfaces, and reduce TMR' induced by disk vibration. They are easier to build, more reliable, and cost less to make, than other known approaches at comparable track densities and rotational rates. The improved head gimbal assemblies include three sets of mechanisms moving the slider parallel the disk surface, when the disk surface is flat, and radially moving the slider toward the track, when the disk surface is bent. The first and third mechanisms as well as the second and third mechanisms can be used together in a head gimbal assembly. An improved and distinctive servo-controller scheme resulting in an overall improvement in PES performance, particularly when applied to hard disk drives employing the invention's TMR reduction mechanisms.

Abstract: A servo writer that writes servo information onto a disk of a hard disk drive. The servo writer can write servo information onto a disk of a hard disk drive while the disk is within an inner chamber of a housing. The rotating disk creates a flow of fluid within the inner chamber. The disk is rotated during the servo writing process. The density of a fluid medium within the inner chamber is controlled by a medium control system so that the density of the medium is less than the density of air at one atmosphere. Lowering the density decreases the amplitude of vibrational forces created by the flow of fluid. Decreasing the amplitude reduces errors in the servo writing process. The density can be reduced by pulling a vacuum within the inner chamber. The density can also be reduced by filling the inner chamber with a gas such as helium that has a lower density than air.

Abstract: Disclosed are a novel organic acid salt of amlodipine, its preparation method, and a pharmaceutical composition containing as a therapeutically active ingredient the same.

Abstract: A method and apparatus to selectively fetch and print e-mails which are received by a mail server via a network during a time period specified by a user. The method allows a user to specify the time period for which received e-mails are desired, than to access the mail server and sequentially fetch and evaluate the e-mail header sections stored in the mail server. The user can then selectively fetch the e-mails received in the mail sever during the specified time period based upon the evaluation of the sequentially-fetched e-mail header sections, and print or store the fetched e-mail results.

Abstract: Provided is an actuator of a disk drive to move a read/write head, for recording and reproducing data, to a predetermined position on a disk. The actuator includes an actuator pivot installed on a base member of the disk drive, a swing arm that is rotatably coupled to the actuator pivot and has a suspension supporting the head at a leading end portion of the swing arm, a coil support portion provided at a rear end portion of the swing arm, a VCM coil coupled to the coil support portion and having four sections having respective particular directions, and magnets arranged to face the VCM coil and having four poles respectively corresponding to the four sections of the VCM coil.

Abstract: Disclosed are a novel organic acid salt of amlodipine, its preparation method, and a pharmaceutical composition containing the same as a therapeutically active ingredient.

Abstract: Disclosed are a novel organic acid salt of amlodipine, its preparation method, and a pharmaceutical composition containing the same as a therapeutically active ingredient.

Abstract: Improved head gimbal assemblies reducing TMR (Track Mis-Registration) in a hard disk drive are provided. These head gimbal assemblies are as mechanically simple as contemporary head gimbal assemblies, support parallel flying sliders over flat disk surfaces, and reduce TMR induced by disk vibration. They are easier to build, more reliable, and cost less to make, than other known approaches at comparable track densities and rotational rates. The improved head gimbal assemblies include three sets of mechanisms for moving the slider parallel the disk surface, when the disk surface is flat, and radially moving the slider toward the track, when the disk surface is bent. The first and third mechanisms as well as the second and third mechanisms can be used together in a head gimbal assembly. An improved and distinctive servo-controller scheme resulting in an overall improvement in PES performance, particularly when applied to hard disk drives employing the invention's TMR reduction mechanisms.

Abstract: Improved head gimbal assemblies reducing TMR (Track Mis-Registration) in a hard disk drive are provided. These head gimbal assemblies are as mechanically simple as contemporary head gimbal assemblies, support parallel flying sliders over flat disk surfaces, and reduce TMR induced by disk vibration. They are easier to build, more reliable, and cost less to make, than other known approaches at comparable track densities and rotational rates. The improved head gimbal assemblies include three sets of mechanisms moving the slider parallel the disk surface, when the disk surface is flat, and radially moving the slider toward the track, when the disk surface is bent. The first and third mechanisms as well as the second and third mechanisms can be used together in a head gimbal assembly. An improved and distinctive servo-controller scheme resulting in an overall improvement in PES performance, particularly when applied to hard disk drives employing the invention's TMR reduction mechanisms.

Abstract: An improved and distinctive servo-controller scheme resulting in an overall improvement in PES performance, particularly when applied to hard disk drives employing the invention's TMR reduction mechanisms. The servo-controllers trade off gain in the disk vibration frequency range, in favor of, increased rejection of low frequency disturbances. This leads to the lowest PES statistics, when applied to hard disk drives with the TMR reduction mechanisms of the invention. Improved head gimbal assemblies reducing TMR (Track Mis-Registration) in a hard disk drive are provided. These head gimbal assemblies are as mechanically simple as contemporary head gimbal assemblies, support parallel flying sliders over flat disk surfaces, and reduce TMR induced by disk vibration. They are easier to build, more reliable, and cost less to make, than other known approaches at comparable track densities and rotational rates.

Abstract: A domestic nanofiltration membrane based water purifier without a storage tank. The water purifier according to the present invention uses a nanofiltration membrane filter as a main filtering section and does not have a storage tank for containment of purified water. Although conventional reverse osmosis membrane based water purification systems provide good quality water, they have problems in that installation of the storage tanks due to insufficient flow rate results in the increased volumes of water purifiers, and at the same time, secondary pollution may be caused by microorganism propagation upon prolonged storage. In this regard, the present invention provides a domestic nanofiltration membrane based water purifier without a storage tank, in which a nanofiltration membrane filter with a pore size of approximately 0.1 to 10 nm is used as a main filtering section.

Abstract: Disclosed is a wavelength-division-multiplexer/demultiplexer using a parabolic horn-type waveguide provided with a grating for demultiplexing a multiplexed optical signal to channels, an input waveguide for inputting the optical signal to the grating, and output waveguides for outputting the optical signals demultiplexed by the grating, wherein the output waveguide comprises a first sub-waveguide having a parabolic horn shape, in which its width is gradually increased in a progressive direction of the optical signal; and a second sub-waveguide having a straight-line shape, in which its width is uniformly maintained in the progressive direction of the optical signal passing through the first sub-waveguide.

Abstract: Disclosed is a device and method for compensating for phase distortions in a base station of an OFDMA-based cellular system. The method comprises receiving OFDM symbols from a plurality of mobile stations, canceling a symbol guard interval using a reference timing signal, and performing an FFT (fast Fourier transform) process on the OFDM symbols; dividing the OFDM symbols that have undergone FFT processing into subchannel groups of the mobile stations; restoring phases of the OFDM symbols divided into subchannel groups; and performing channel estimation and equalization on the restored OFDM symbols for each mobile station to thereby perform a demodulation process.

Abstract: A network facsimile and an network facsimile operation method include storing received facsimile data until an amount of the received facsimile data is more than a predetermined amount if the facsimile data corresponding to a facsimile document is received from an outside source when there is no printing paper on which the facsimile data is to be printed; converting and transmitting the stored facsimile data into a form of an electronic mail to the mail server, if the amount of the received facsimile data is more than the predetermined amount or if the facsimile data is completely received; and determining whether the facsimile data is completely received, and proceeding to the operation of storing the received facsimile data if the facsimile data is not completely received.

Abstract: Disclosed are a novel organic acid salt of amlodipine, its preparation method, and a pharmaceutical composition containing the same as a therapeutically active ingredient.

Abstract: An impeller for an automotive fuel pump, designed to minimize energy loss due to collision with fuel at fuel-inflow regions of blade chambers, is disclosed. The impeller includes a disk-shaped impeller body, a plurality of arched main blades radially provided at a peripheral area of the impeller body with arched blade chambers defined therebetween, and a plurality of arched auxiliary blades radially disposed between the main blades. Each of the blade chambers is provided at its inner side with an inner ridge portion defining upper and lower fuel-inflow regions and at its outer side with an outer ridge portion defining upper and lower fuel-outflow regions. The main and auxiliary blades are alternately arranged. The blade chambers are divided into arched sub-chambers by the auxiliary blades. Each of the auxiliary blades has a length shorter than that of each of the main blades and has a sharpened inner end.

Abstract: A method and an apparatus to output electronic mail (e-mail) according to degree of importance is provided. The method includes determining the degrees of importance of the e-mails; sending the e-mails whose degrees of importance are determined to another party; separating the degrees of importance of the e-mails that are sent to the other party; and printing the e-mails whose degrees of importance are separated into groups in accordance with the degrees of importance.