Abstract: A novel method for manufacturing a 3-D vertical memory comprising the steps of dividing a multilayer structure composed of insulating intermediate layers and sacrificial intermediate layers into a first multilayer structure and a second multilayer structure, replacing the sacrificial intermediate layers in the multilayer structures with metal intermediate layers, and manufacturing the channel structure in two multilayer structures.

Abstract: A method for producing a biodegradable plastic material includes: hydrolyzing starch to form a hydrolyzed starch; esterifying the hydrolyzed starch to form a hydrolyzed and esterified starch; drying the hydrolyzed and esterified starch to obtain a dried modified starch; and mixing the dried modified starch with a plastic material, such as an EVA copolymer.

Abstract: A High Electron Mobility Transistor (HEMT) device, which is formed by connecting a plurality of low power flip-chip type High Electron Mobility Transistor (HEMT) elements in parallel, or connected them in parallel and in series in combination into a tree-shaped structure, and then connecting said structure to an input terminal and an output terminal. Distances between each of the flip-chip type HEMT elements, from each element to said input terminal, and from each element to said output terminal are designed to be equal, such that powers consumed by each of the flip-chip type HEMT elements are equal, currents flowing through are evenly distributed, and heat generated is liable to be dissipated. A spike leakage protection layer, such as zinc-oxide (ZnO) amorphous layer or poly-crystal layer, is further included, hereby further enhancing the efficiency of said flip-chip type HEMT element and prolonging its service life.

Abstract: An oxidized low density lipoprotein sensing device for a gallium nitride process is a GaN HEMT device including: a gateless AlGaN/GaN sensing transistor device, a testing window, a source, a drain, two metal connecting wires and a passivation layer. The gateless AlGaN/GaN sensing transistor device has an epitaxial wafer structure including a GaN layer and an aluminum gallium nitride layer. The testing window is disposed on the epitaxial wafer structure. The metal connecting wire is disposed on a source and a drain. The passivation layer is covered onto a surface of the sensing device except the testing window. A built-in piezoelectric field is created by the properties of FET and the polarization effect of AlGaN/GaN to achieve the effect of sensing the level of oxidizing proteins in human body quickly, accurately and easily.

Abstract: A method for producing a biodegradable plastic material includes: hydrolyzing starch to form a hydrolyzed starch; esterifying the hydrolyzed starch to form a hydrolyzed and esterified starch; drying the hydrolyzed and esterified starch to obtain a dried modified starch; and mixing the dried modified starch with a plastic material, such as an EVA copolymer.

Abstract: A fastener includes a driven head and a shank portion. The driven head has a top end, a bottom end, a plurality of flat guide surfaces connected between the top and bottom ends, a plurality of angularly spaced-apart rounded driven lobes each connected between two adjacent flat guide surfaces, and a flanged abutment section projecting outwardly and radially from the bottom end. Each flat guide surface is indented between two adjacent rounded driven lobes. The shank portion is connected to the driven head, and has a thread extending helically around an outer periphery of the shank portion.

Abstract: A screw band includes a plurality of interconnected anchoring seats allowing screws to extend respectively therethrough. Each of the anchoring seats includes a seat body having an inner hole formed therethrough, and a plurality of equidistant slots extending outwardly from the inner hole to define a plurality of clamping arms for clamping the corresponding screw thereamong. The clamping arms of each of the anchoring seats are formed pressing toward each other to define a screw clamping space thereamong. Each of the slots has a through slot portion extending outwardly from the corresponding inner hole and formed through the corresponding seat body, and a blind slot portion extending outwardly from an outer end of the through slot portion to allow the corresponding anchoring seat to be broken therealong when the corresponding screw is passed through the corresponding screw clamping space.

Abstract: A screw strip for holding a plurality of screws has a plurality of screw-holding strip portions for holding respectively the screws. Each of the screw-holding strip portions includes a plurality of resilient clamping arms for clamping the corresponding screw. Two opposite sides of the screw strip are formed respectively with two long ribs extending along a full length of the screw strip. Each side of the screw strip is further formed with a plurality of spaced-apart wings located outside of the corresponding long rib.

Abstract: A wood screw includes a head, a shank, an engagement thread, at least one parallel thread and at least one guiding thread. The head is for receiving a fastening tool. The shank extends from the head and includes a parallel shank portion, a tapered portion formed at the tip of the parallel shank portion and a pointed end formed at the tip of the tapered portion. The engagement thread is formed on the parallel shank portion. The at least one parallel thread is formed on the tapered portion. Then at least one guiding thread is formed on the tapered portion and between the parallel thread and the engagement thread.

Abstract: A screw includes a head, and a shank connected to the head. The shank includes a lower threaded section that is formed with a first thread, and an upper threaded section that is disposed adjacent to the head, and that is formed with a second thread. The second thread is in a reversed orientation relative to the first thread. The shank further includes an unthreaded section that is disposed between the upper threaded section and the lower threaded section, and that is formed with at least one pair of diametrically disposed fins, and a tip that tapers from the lower threaded section. The fins are disposed proximate to the lower threaded section and distal from the upper threaded section.

Abstract: A screw includes a head and a threaded shank that extends from one side of the head. The head further has a tool engaging side that is opposite to the shank and that has an outer peripheral edge part. The tool engaging side is formed with an inner standard square recess part that is surrounded by the outer peripheral edge part, and an outer guiding recess part that diverges from the inner standard square recess part in a direction away from the threaded shank and that is defined by a guiding surface extending from a periphery of the inner standard square recess part to the outer peripheral edge part.

Abstract: A metal-made pallet includes a top board, a plurality of lower boards and a support part connected between the top board and the lower boards. The support part has recessed portions and protrusion portions. The recessed portions are fixed to the lower boards and the protrusion portions are fixed to the top board according to the desired specifications. The pallet is strong, reusable and easily to be fabricated. The metal-made pallets can recycle and reuse and are successfully avoided from the insect problems, furthermore has the environmental protection effect.

Abstract: A screw is disclosed to have a compound recess in the head thereof, which compound recess having a center square portion, four symmetrical fan-shaped portions in contact with the four angles of the center square portion, and a narrow elongated slot portion extending across two opposite angles of the center square portion. The ratio between the depth of the narrow elongated slot portion and the depth of four angles of the center square portion is within 2/3:1.

Abstract: A screw strip for holding a plurality of screws is flexible, and includes a plurality of interconnected screw-holding strip portions. Each of the screw-holding strip portions includes an annular planar top wall and a plurality of pressed and spaced-apart holding tongues. The holding tongues extend integrally, downwardly and inwardly from an inner periphery of the top wall so as to define a screw-clamping space thereamong, which clamps a respective one of the screws therewithin.

Abstract: A strip includes an elongated strip body with a plurality of holding members for holding fasteners, such as screws, nails or the like. Each holding member includes a plurality of flexible tongues displaced from one another about a central line and terminating at distal ends that define a central hole for passage of a shank of the fastener. Thus, the distal ends are forced to incrementally flare out to acquire a biasing force that acts against squeezing movement of the shank and that culminates in a sufficient retaining force for holding the distal ends and the shank in frictional engagement so as to retain the shank in the central hole.

Abstract: A screw-belt advancing mechanism of a screw driving gun includes a barrel unit, a sliding unit connected telescopically to the barrel unit and movable relative thereto between extended and retracted positions, a pivot pin mounted on the sliding unit, and a spring-biased lifting member to engage releasably a screw-retaining belt fed into the sliding unit. The lifting member is pivoted to the pivot pin, and is associated with the sliding unit in such a manner that the lifting member is moved toward the barrel unit and pivots about the pivot pin in a first direction so as to push the screw-retaining belt to a desired position, in which, a selected screw on the screw-retaining belt is aligned with a driving shaft in the barrel unit when the sliding unit slides from the extended position to the retracted position.

Abstract: A screw-belt advancing mechanism of a screw driving gun includes a barrel unit, a sliding unit connected telescopically to the barrel unit and movable relative thereto between extended and retracted positions, a pivot pin mounted on the sliding unit, and a spring-biased lifting member to engage releasably a screw-retaining belt fed into the sliding unit. The lifting member is pivoted to the pivot pin, and is associated with the sliding unit in such a manner that the lifting member is moved toward the barrel unit and pivots about the pivot pin in a first direction so as to push the screw-retaining belt to a desired position, in which, a selected screw on the screw-retaining belt is aligned with a driving shaft in the barrel unit when the sliding unit slides from the extended position to the retracted position.

Abstract: A wood screw includes a head part, a tapered insert part, and a shank part disposed between the head part and the tapered insert part. The shank part has first and second shank segments adjacent to the head part and the tapered insert part, respectively. The first shank segment has a first radius. The second shank segment has a surface that is formed with a screw thread. The screw thread includes interconnected thread sections that have a second radius larger than the first radius. The surface of the second shank segment is further formed with at least one projecting element between two neighboring interconnected ones of the thread sections that are proximate to the tapered insert part. The projecting element has a greatest radial dimension with respect to the shank axis that is greater than the first radius and less than the second radius.