Abstract: The present invention is directed to a process for making Nucleoside Phosphoramidate Compounds of formula (I): which are useful for the treatment and prophylaxis of HCV infection. The present invention is also directed to compounds that are useful as synthetic intermediates for making the compounds of formula (I).

Abstract: A switching power converter provides regulated voltage to a load. The switching power converter comprises a transformer including a primary winding coupled to an input voltage and a secondary winding coupled to an output of the switching power converter. The switching power converter further comprises a power switch coupled to the primary winding and a rectifier coupled to the secondary winding. Current is generated in the primary winding responsive to the power switch being turned on and not generated responsive to the power switch being turned off. A detection circuit measures a voltage across the rectifier. If the detection circuit detects a decrease in the voltage across the rectifier outside of a blanking period, the detection circuit generates a current pulse in the secondary winding of the transformer.

Abstract: A double-station wheel burr removing device includes clamping drive systems, lifting drive systems, an upper rim burr removing system, a valve hole burr removing system, a rotary switching system and the like, which in use can simultaneously remove burrs on two wheels having different heights and different diameters at the end face of the upper rim, the valve hole, the lateral cutting position of the upper rim and the riser.

Abstract: A single-phase outer-rotor motor and a stator thereof are provided. The stator includes a stator core having a yoke and a number of teeth. Each tooth includes a tooth body and a tooth tip. A winding slot is formed between each two adjacent tooth bodies. A slot opening is formed between each two adjacent tooth tips. The tooth tip protrudes beyond the tooth body. Inner surfaces of at least part of the tooth tips facing the stator are formed with cutting grooves such that a portion of the tooth tip outside the cutting groove is capable of being tilted outwardly to enlarge the slot opening and deformed inwardly to narrow the slot opening.

Abstract: A single-phase outer-rotor motor includes a stator and a rotor surrounding the stator. The stator includes a stator core and windings wound around the stator core. The stator core includes a yoke and a plurality of teeth. Each of the teeth forms a tooth tip at a distal end thereof. A slot opening is formed between each two adjacent tooth tips. The rotor includes a housing and a permanent magnet affixed to an inside of the housing. The permanent magnet forms a closed ring in a circumferential direction. The permanent magnet forms a plurality of magnetic poles along the circumferential direction. An outer surface of the stator and an inner surface of the permanent magnet define there between a symmetrical uneven gap. A width of the slot opening in the circumferential direction is less than or equal to five times of a minimum width of the gap.

Abstract: The present invention provides a recessed light fixture comprising a housing and a bottom plate, wherein the housing is composed of a first side wall and a second side wall opposite to each other, with both the first side wall and the second side wall are respectively provided with a first latching portion and a second latching portion, and the bottom plate is a light diffuser plate or a ventilation plate. The bottom plate comprises a first edge and a second edge opposite to each other. By engaging at least a portion of the first and second edges with the first and second latching portions respectively, the bottom plate can be assembled directly onto the housing while preventing it from moving up or down. The present invention solves the problem of complex and time consuming assembly of currently used recessed light fixture housings and bottom plates, and possesses the advantages of a simpler structure, convenient assembly, as well as a vast reduction in the number of parts and components.

Abstract: The present invention provides a stator core comprising an end portion and a pole arm extending from the end portion. The pole arm includes two spaced connecting arms and two pole claws respectively formed at distal ends of the connecting arms. The two pole claws define a space for receiving a rotor therein. The pole claws surround the space and form an arc pole surface. The arc pole surface forms a discontinuity opening along a circumferential direction. The discontinuity opening faces a spacing between the connecting arms and has a width changed along an axial direction.

Abstract: In some aspects, the disclosure is directed to methods and systems for coexistence management. A first access point is scheduled a time to begin transmission of a packet to a user device in an unlicensed frequency band using a first RAT. The time to begin the transmission is scheduled to avoid transmission overlap with a second access point using a second RAT in the unlicensed frequency band, and scheduled according to information from the second access point regarding operation in the unlicensed frequency band using the second RAT. One of the first and second RATs includes one of a WLAN RAT or a LTE based RAT, and another of the first and second RATs includes a remaining one of the WLAN RAT or the LTE based RAT, in one or more embodiments. The first access point receives updated information regarding operation in the unlicensed frequency band using the second RAT.

Abstract: An ESD protection device includes a substrate structure having a substrate, first and second fins, and first and second doped regions having different conductivity types. The first doped region includes a first portion of the substrate and a first region of the first fin, the second doped region includes a second portion of the substrate, a second region of the first fin adjacent to the first region and the second fin. The ESD device also includes a first gate structure on a surface portion of the first region and on an entire surface of the second region of the first fin and including, from bottom to top, an interface layer on the surface portion of the first region and the surface portion of the second region of the first fin, a spacer, a high-k dielectric layer, a first work-function adjusting layer, a second work-function adjusting layer, and a gate.

Abstract: The present invention provides a water cooled mold for casting aluminum alloy wheels and a manufacturing method thereof. The water cooled mold is provided with first-type water cooling channels with high heat exchange efficiency and second-type water cooling channels with low heat exchange efficiency. The first-type water cooling channels are concave grooves through which cooling water flows, and a cooling surface of the mold is in contact with open surfaces of the concave grooves. The second-type water cooling channels are grooves with stainless steel pipes, and the stainless steel pipes are in contact with the cooling surface of the mold. The second-type water cooling channels are installed on mold portions corresponding to wheel window positions of a cavity, and the first-type water cooling channels are installed on mold portions corresponding to spokes, flanges and rims of the cavity.

Abstract: A method for controlling the rotational speed of a fan of an LED lamp, comprising: presetting a corresponding relationship between a voltage, a current and a temperature for an LED chip in the LED lamp in the controller, as well as presetting a corresponding relationship between the temperature of LED chip and the speed of the fan in the controller, measuring the voltage and current of the LED chip, obtaining the current calculated temperature of the LED chip through the measured voltage and current, and further determining the current desired fan speed through the obtained current calculated temperature, using the controller to control the fan to rotate at the current desired speed, thereby cooling the LED chip. Additionally a corresponding system for controlling the rotational speed of the fan of an LED lamp and an LED lamp including the system.

Abstract: Semiconductor structures and fabrication methods are provided. An exemplary fabrication method includes providing a base substrate including a plurality of fins on a semiconductor substrate; forming a gate layer across the fins; forming a P-type doped epitaxial layer in the fins at both sides of the gate layer in a PMOS region of the semiconductor substrate; forming an N-region mask layer on top and sidewall surfaces of the fins in the NMOS region and covering the P-type doped epitaxial layer; forming an N-region trench; forming an N-type doped epitaxial layer by filling the N-region trench; forming an interlayer dielectric layer over the semiconductor substrate; forming a contact opening to expose the P-type doped epitaxial layer and the N-type doped epitaxial layer; and performing an N-type dopant segregated Schottky (DSS) doping process on a portion of the N-type doped epitaxial layer exposed by the contact opening.

Abstract: Embodiments of the present invention provide a method and device for reducing complexity of channel quantization.

Abstract: The present disclosure is directed to methods and system for managing communication of packets. A transceiver node receives a plurality of IP data packets from an internet protocol (IP) network. The transceiver node separates the IP data packets into a first set and a second set of IP data packets, according to channel conditions of a cellular network and a wireless local area network (WLAN). The transceiver node transmits, to a user device, the first set of IP data packets using a cellular network protocol of the cellular network and the second set of IP data packets using a WLAN protocol of the WLAN, causing the user device to aggregate the first set of IP data packets transmitted using the cellular network protocol with the second set of IP data packets transmitted using the WLAN protocol.

Abstract: A method for fabricating an SRAM includes forming a plurality of first fin structures, a plurality of second fin structures, and an isolation layer. Each first fin structure is adjacent to a second fin structure and includes a first replacement region exposed by the isolation layer. The method includes forming pull down (PD) transistors, including forming PD gate structures to partially cover the first fin structures; forming a fin sidewall film on sidewall surfaces of each first replacement region; forming a first PD dielectric layer, exposing each first replacement region, to cover sidewall surfaces of the fin sidewall film; removing the first replacement region and the fin sidewall film on sidewall surfaces of the first replacement region; and forming a first source/drain doped layer. The method also includes forming adjacent transistors, including forming a second source/drain doped layer in the second fin structures adjacent to the first source/drain doped layer.

Abstract: A front cover assembly includes a frame, a cover glass, and a waterproof glue. The frame has a receiving cavity. The cover glass is partially received in the frame. The cover glass has a light exiting face and a lateral face extending from the light exiting face. The cover glass has a step portion located at the lateral face and extending toward the frame. A gap is defined between the step portion of the cover glass and the frame. A waterproof glue fills the gap and directly contacts the step portion and the frame. This assembly can prevent water or dust from entering a terminal device.

Abstract: A method for fabricating a semiconductor device includes forming a gate dielectric layer on a base substrate including an N-type logic region, a P-type logic region, a first pull down transistor (PDT) region, a second PDT region, and a pass gate transistor (PGT) region, forming a first work function layer (WFL) in the first N-type threshold-voltage (TV) region, the P-type logic region, the second PDT region, and the PGT region, forming a second WFL on the first WFL in the first P-type TV region, and forming a third WFL on the second WFL in the first P-type TV region, the first WFL in the second P-type TV region, and the gate dielectric layer in the second N-type TV region and the first PDT region. The thickness of the third WFL is smaller than the thickness of the first WFL. The method further includes forming a fourth WFL on the substrate.

Abstract: Semiconductor structures and fabrication methods thereof are provided. An exemplary fabrication method includes providing a base substrate having an N-type logic region including a first and a second N-type threshold voltage region, a P-type logic region including a first and a second P-type threshold voltage region, a pull-up transistor region and an adjacent pull-down transistor region; forming a gate dielectric layer; forming a first work function layer on the gate dielectric layer; removing portions of the first work function layer; forming a second work function layer on remaining first work function layer and exposed portions of the gate dielectric layer; removing a portion of the second work function layer; forming an N-type work function layer on remaining second work function layer and exposed portion of the gate dielectric layer in the second N-type threshold voltage region; and forming a gate electrode layer on the N-type work function layer.

Abstract: Provided is a glaucocalyxin A derivative, or salt thereof, as represented by the formula (I), a method for preparation of said glaucocalyxin A derivative, and a use for said glaucocalyxin A derivative in preparing pharmaceuticals for fighting autoimmune diseases and tumors, e.g.

Abstract: A single phase brushless motor and a power tool are provided. The single phase brushless motor includes a stator and a rotor. The stator includes a stator core and windings wound around the stator core. The stator core includes a yoke and at least two teeth. The tooth includes a tooth body and a tooth tip. The tooth tip includes first and second pole shoes. The two pole shoes of each tooth are symmetrical about a center line of the tooth body. Each tooth defines a positioning groove facing the rotor between the two pole shoes. Pole shoes of adjacent two of the at least two teeth are spaced apart by a slot opening. A width of the positioning groove is greater than a width of the slot opening. The peak value of the cogging torque of the motor is increased, and the motor has a large startup torque.