Abstract: A wafer cleaning device comprising a wafer stage for holding a wafer having a surface to be washed, a first nozzle positioned above the wafer, a second nozzle positioned above the wafer. A first height is between the first nozzle and the surface and a second height is between the second nozzle and the surface, wherein the first height is shorter than the second height.

Abstract: A two dimensional (2D) vector graphics triangulation system and a method thereof are provided. The system includes a memory module and a triangle mesh processing module. The memory module temporarily stores a triangle mesh triangulated from a 2D vector graphics into a binary tree data structure. The triangle mesh processing module adjusts the triangle mesh, or re-performs a triangulation processing to a local region of the loop when a state of a loop of the 2D vector graphics is changed. The triangle mesh processing module includes a level of detail unit, which proportionally adjusts an error threshold according to a zoom condition of the loop, updates an error value of each boundary line when the loop is deformed, and splits a boundary line or merges two neighbouring boundary lines according to the error values of the boundary lines and the error threshold.

Abstract: A sphere tree is first generated. Accessibility values and occlusion angles corresponding to each vertex of a 3D object are calculated according to the sphere tree. A 2D texture and a 3D texture are then generated to store the accessibility values and occlusion angles. When a self-shadow effect of the 3D object is required to be generated, the relation of the spheres in the sphere tree is updated, and a 3D image is formed by retrieving the values in the 2D texture and the 3D texture according to the updated sphere tree. Since the 2D texture and the 3D texture are pre-stored, the real time calculation load is hugely reduced while the self-shadow effect is processed.

Abstract: A composition of acetic acid and a composition of acetic acid and RF3 effecting expression of DAF-16 in C. elegans, wherein the at least acetic acid and the RF3 polysaccharide is effective to increase the life-span of C. elegans or humans. A method of regulating DAF-16 expression, comprising: administering a composition comprising at least acetic acid and RF3 polysaccharide; providing the composition to at least one receptor on a surface of a cell; causing an increase in expression of DAF-16. A method for screening a series of compounds or constituents parts of compounds including some antioxidant vitamins, traditional herb medicines, and vinegars using C. elegans as a live organism model to examine to determine if they have an impact the lifespan of C. elegans and the underlying mechanism(s) thereof.

Abstract: A sphere tree is first generated. Accessibility values and occlusion angles corresponding to each vertex of a 3D object are calculated according to the sphere tree. A 2D texture and a 3D texture are then generated to store the accessibility values and occlusion angles. When a self-shadow effect of the 3D object is required to be generated, the relation of the spheres in the sphere tree is updated, and a 3D image is formed by retrieving the values in the 2D texture and the 3D texture according to the updated sphere tree. Since the 2D texture and the 3D texture are pre-stored, the real time calculation load is hugely reduced while the self-shadow effect is processed.

Abstract: Method and apparatus for determining the rotational direction of a rotatable article, such as a spindle motor used in a data storage device to rotate a data recording disc. The article includes an index mark which is detected by an index sensor to identify an index reference position on the article. The index sensor and index mark are further used to detect the direction of rotation of the article. In some embodiments, a second sensor is provided so that first and second timing pulses are generated from the index mark by the index sensor and the second sensor. In other embodiments, a second (detection) mark is added to the article so that first and second timing pulses are generated by the index sensor. In either case, a rotational direction detection circuit determines the rotational direction of the article in relation to the first and second timing pulses.

Abstract: A method for automatically correcting the dynamic imbalance of a disc pack of a disc drive, the disc pack conveyed to a first selected position in a balance correction assembly station where a rotary positioner lifts and rotates the disc pack to a reference position for the attachment of weighted shims to the disc pack. A shim selector assembly delivers a selected shim, and an end effector transfers the selected shim to a shim attachment assembly. The shim attachment assembly rotates and spreads open the shim so that the disc pack can be receivingly engaged thereby, and the shim attachment assembly releases the selected shim to lockingly engage the disc pack. A flipping assembly reverses the disc pack for placement of another selected shim to the other end of the disc pack, as required.

Abstract: A method of automatically measuring the dynamic imbalance of a disc stack of a disc drive assembly, the disc stack conveyed to a first selected position in a balance measure assembly station where a rotary positioner lifts and rotates the disc stack above a sensor to locate an electrical lead of the disc drive motor. The disc stack is positioned in a reference position to position the electrical leads a for powering the disc drive motor. The disc stack is then conveyed to a second selected position where a motor power assembly clamps and powers the motor and discs. A balance head assembly measures the magnitude and phase angle of the dynamic imbalance of the disc stack and records the measurement to a production control computer.

Abstract: An apparatus of automatically measuring the dynamic imbalance of a disc stack of a disc drive assembly, the disc stack conveyed to a first selected position in a balance measure assembly station where a rotary positioner lifts and rotates the disc stack above a sensor to locate an electrical lead of the disc drive motor. The disc stack is positioned in a reference position to position the electrical leads a for powering the disc drive motor. The disc stack is then conveyed to a second selected position where a motor power assembly clamps and powers the motor and discs. A balance head assembly measures the magnitude and phase angle of the dynamic imbalance of the disc stack and records the measurement to a production control computer.

Abstract: An apparatus and method for automatically correcting the dynamic imbalance of a disc pack of a disc drive, the disc pack conveyed to a first selected position in a balance correction assembly station where a rotary positioner lifts and rotates the disc pack to a reference position for the attachment of weighted shims to the disc pack. A shim selector assembly delivers a selected shim, and an end effector transfers the selected shim to a shim attachment assembly. The shim attachment assembly rotates and spreads open the shim so that the disc pack can be receivingly engaged thereby, and the shim attachment assembly releases the selected shim to lockingly engage the disc pack. A flipping assembly reverses the disc pack for placement of another selected shim to the other end of the disc pack, as required.

Abstract: An improved sound concentrates for selectively collecting sound and concentrating and transmitting the collected sound that include an emission circuit and a receiving circuit, each of these two circuits containing an antenna used as a signal transmission to communicate with each other. In the emission circuit, a selection switch is arranged, which enables users to choose one sound source among a variety of applications that the sound concentrator of the invention provides, such as telephones, microphones, television sets, and audio equipment, and so on. The receiving circuit receives signals from the emission circuit and contains an automatic volume control and a treble/bass boosting circuit to provide users a proper sound volume and quality and has an excellent collection effect for distant sounds.