Abstract: A heat dissipation device of electronic equipment has a base, a heat dissipation group, and a cover. The base has an opening, a chamber, and a boss formed in the chamber. The heat dissipation group is connected to the base and has a circuit board and a cooling blade. The circuit board is mounted in the chamber, abuts against the boss, and has a heat source area and at least one non-heat-source area. The heat source area has a first surface facing the boss and a second surface facing the opening. The cooling blade is connected to the base and is located at the second surface. The first surface and the second surface of the heat source area respectively correspond to the boss and the cooling blade in location to provide a guiding direction for heat conduction. The cover is connected to the base.

Abstract: The present application provides a comfortable lightweight bullet-proof and stab-resistant suit and a preparation method thereof. A first aspect of the present application provides a comfortable lightweight bullet-proof and stab-resistant suit, including a sheath and a protection core sheet disposed in the sheath, and the protection core sheet includes a first protection layer, a second protection layer, a third protection layer and a buffer layer which are sequentially stacked together. The bullet-proof and stab-resistant suit provided in the present application has better response protection characteristics in the process of bullet penetration or knife tip stab, and the prepared aramid unidirectional cloth has low areal density, apparent flatness, no bubbles, and excellent softness, so that any bending within 180° can be realized.

Abstract: A system and a method for parameter optimization with adaptive search space and a user interface using the same are provided. The system includes a data acquisition unit, an adaptive adjustment unit and an optimization search unit. The data acquisition unit obtains a set of executed values of several operating parameters and a target parameter. The adaptive adjustment unit includes a parameter space transformer and a search range definer. The parameter space transformer performs a space transformation on a parameter space of the operating parameters according to the executed values. The search range definer defines a parameter search range in a transformed parameter space based on the sets of the executed values. The optimization search unit takes the parameter search range as a limiting condition and takes optimizing the target parameter as a target to search for a set of recommended values of the operating parameters.

Abstract: The present disclosure provides a direct current (DC) transformer error detection apparatus for a pulsating harmonic signal, including a DC and pulsating harmonic current output module and an external detected input module, where the DC and pulsating harmonic current output module outputs a DC and a DC superimposed pulsating harmonic current to an internal sampling circuit and a self-calibrated standard resistor array; and the internal sampling circuit converts the input DC and the input DC superimposed pulsating harmonic current into a voltage signal, and sends the voltage signal to an analog-to-digital (AD) sampling and measurement component through a front-end conditioning circuit and a detected input channel. The DC transformer error detection apparatus can complete self-calibration for measurement of the DC and the pulsating harmonic signal on a test site.

Abstract: A method, computer system, and computer program product for data monitoring management are provided. A first invalid zero value candidate from a data stream is received. A memory location for the first invalid zero value candidate is received. At a first time an access connection to the memory location is established. At a second time subsequent to the first time the access connection to the memory location is checked. Based on the checking, a determination is made whether the first invalid zero value candidate contains an invalid zero value.

Abstract: The invention relates to a power tool with an electrically controlled commutating assembly comprising: an electrically controlled commutating assembly and a control unit; the electrically controlled commutating assembly has an electromagnetic unit; the electromagnetic unit is capable of performing a change in displacement due to electromagnetic action; the control unit has a control member, the control member is capable of changing a working direction of a power tool, and displacement of the electromagnetic unit is capable of actuating the control member of the control unit to make the power tool switch the working direction.

Abstract: A pixel driving circuit and a display panel are provided. The pixel driving circuit includes a control unit to output a control signal by detecting a voltage difference between two opposite ends of a sampling resistor, and to turn on a fourth switch by the control signal. When the fourth switch is turned on, a second positive voltage received by the pixel driving circuit charges a second node to further speed up a voltage pulling up of the second node to improve a detecting speed of the pixel driving circuit.

Abstract: The invention is an electric commutating ratchet tool comprising: a head; a ratchet mechanism with a rotating member and a latch member; the rotating member is capable of rotating, the latch member is capable of displacing and controlling rotation direction of the rotating member; and a commutating device with a commutating member, a magnetic driving member and a magnetic actuating unit; the commutating member is capable of displacing to abut against the latch member; the magnetic actuating unit is opposite to the magnetic driving member, either the magnetic actuating unit or the magnetic driving member is disposed on the commutating member; the magnetic actuating unit is at least one electromagnet; magnetic direction is changed through each of the electromagnets, so that the magnetic driving member is magnetically driven to change a position of the latch member.

Abstract: Described are methods of using a lipase for hydrolysis and esterification. In a first method of producing a medium chain fatty acid by hydrolysis, the method comprises providing a polypeptide with at least 90% degree of identity to SEQ ID No. 3, and contacting the polypeptide with a medium chain fatty acid ester and water to produce the medium chain fatty acid. In a second method of forming an ester, the method comprises providing a polypeptide with at least 90% degree of identity to SEQ ID No. 3; and contacting the polypeptide with a long chain fatty acid, an alcohol, and water to form the ester of the long chain fatty acid and the alcohol.

Abstract: A stator of a brushless motor has an iron core, a bobbin, and a winding assembly. The iron core has multiple stator poles mounted on an interior annular surface of a core body and spaced apart from each other. The bobbin is mounted on one of two open ends of the core body and has a substrate, at least one neutral connector mounted on an upper surface of the substrate, and at least one neutral solder pad mounted in the at least one neutral connector. The winding assembly is formed by one wire wound on multiple stator poles and the connectors. The winding assembly is electrically connected to the at least one neutral solder pad.

Abstract: The present invention relates to an electric motor and an electric tool equipped with the electric motor. The electric motor includes a rotor, a stator, a coil module wound around the stator, a Hall unit and a wiring circuit unit. The Hall unit includes a Hall circuit board disposed around a rotating shaft of the rotor, and a Hall module for sensing rotation of the rotor. The wiring circuit unit is independent of the Hall circuit board and includes a three-phase power source interface. The wiring circuit unit electrically connects coils of the coil module to the power source interfaces respectively by groups. By separately disposing the Hall unit and the wiring circuit unit independently, a volume of the Hall circuit board can be reduced, and an area blocking an airflow path of a heat dissipation unit can be reduced, so heat dissipation effect of the electric motor and the electric tool can be improved.

Abstract: The present invention provides a photomask including a substrate, a circuit pattern on the substrate, an electrostatic discharge (ESD) ring on the substrate and an ESD line on the substrate. The ESD structure surrounds the circuit pattern. The ESD line extends between an edge of the substrate and the ESD structure, in which the ESD line includes an edge portion extending beyond an end of an edge of the ESD structure, and the edge portion of the ESD line includes at least one comb-shaped structure.

Abstract: A 3-dimensional crystalline carbon material that is magnetic and metallic under ambient conditions is provided. The material, denominated U-carbon, has been synthesized using the molecular precursor, 3, 3-dimethyl-1-butene (C6H12). Depending on the atomic connections made between the carbon atoms of the material, U-Carbon forms structures that exhibit semiconducting and nonmagnetic to metallic and ferromagnetic behaviors. The use of selected molecular precursors (such as 3, 3-dimethyl-1-butene C6H12) that support crystal growth based on clustered rather than individual atoms is a paradigm shift in materials development. Rationally designed metastable materials with desirable properties, including U-Carbon, can have many scientific and technological applications.

Abstract: The invention is an electric commutating ratchet tool comprising: a head; a ratchet mechanism with a rotating member and a latch member; the rotating member is capable of rotating, the latch member is capable of displacing and controlling rotation direction of the rotating member; and a commutating device with a commutating member, a magnetic driving member and a magnetic actuating unit; the commutating member is capable of displacing to abut against the latch member; the magnetic actuating unit is opposite to the magnetic driving member, either the magnetic actuating unit or the magnetic driving member is disposed on the commutating member; the magnetic actuating unit is at least one electromagnet; magnetic direction is changed through each of the electromagnets, so that the magnetic driving member is magnetically driven to change a position of the latch member.

Abstract: A pixel driving circuit and a display panel are provided. The pixel driving circuit includes a control unit to output a control signal by detecting a voltage difference between two opposite ends of a sampling resistor, and to turn on a fourth switch by the control signal. When the fourth switch is turned on, a second positive voltage received by the pixel driving circuit charges a second node to further speed up a voltage pulling up of the second node to improve a detecting speed of the pixel driving circuit.

Abstract: An electric bike having an improved effect of heat dissipation has a body, a driving device, and a battery. The body has a frame, a rear wheel, and a front wheel, wherein the rear wheel and the front wheel are mounted to the frame. The driving device is mounted to the body and has a motor and a shell. The motor is connected with the frame and has a front end near the front wheel and a rear end near the rear wheel. The shell covers the motor and has multiple inlets and multiple outlets disposed therethrough. The multiple inlets are located near the front end of the motor. The multiple outlets are located near the rear end of the motor. The battery is electrically connected to the motor. The front wheel, the battery, the motor, and the rear wheel are serially aligned.

Abstract: An elastic self-lubricating polishing tool includes an elastic grinding layer including an abrasive member and an elastic base layer affixed to the abrasive member, an absorbing layer absorbing and sustainedly releasing liquid inside of the absorbing layer, and an adhesive layer overlappedly connected with the elastic base layer of the elastic grinding layer and the absorbing layer. The elastic self-lubricating polishing tool is elastic and self-lubricating to sand and polish a surface of a workpiece.

Abstract: A sanding tool includes a backing layer an adhesive layer and an abrasive layer. The adhesive layer is provided at the backing layer for bonding the abrasive layer at the backing layer via flocking techniques.