Abstract: Disclosed is the use of a DKK1 gene or the coded protein inhibitor thereof for the preparation of a composition or formulation used to prevent and/or treat tumor cachexia and diseases associated with diabetes. By inhibiting the expression or activity of the DKK1 gene or the protein encoded thereby in tumor cells, which can effectively prevent and/or treat tumor cachexia and diseases associated with diabetes, also provided is a method for detecting the protein expression level of DKK1 in blood, which level is taken as an indicator for precise treatment and judging prognosis.

Abstract: A tidal current energy converter including an infinitely variable transmission (IVT) control system and a hybrid vertical axis wind (or water) turbine (VAWTs) apparatus. The hybrid VAWT apparatus includes a modified-Savonius (MS) rotor in the central region and a straight bladed H-type Darrieus rotor in the surrounding annular region. The IVT control system includes a nonlinear closed-loop control combined with an integral time-delay feedback control to adjust a speed ratio of the IVT. A speed ratio control for an IVT system involves a forward speed controller and/or a crank length controller for different speed ranges. The time-delay control is designed to reduce speed fluctuations of the output speed of an IVT with an accurate speed ratio. The speed ratio of an IVT with the disclosed control strategy can achieve an excellent tracking response for the desired constant output speed and reduce speed fluctuations of the output speed of an IVT by the time-delay feedback control.

Abstract: A nonlinear closed-loop control combined with an integral time-delay feedback control is disclosed to adjust a speed ratio of an infinitely variable transmission (IVT) system. A speed ratio control for an IVT system involves a forward speed controller and a crank length controller for different speed ranges. The time-delay control is designed to reduce speed fluctuations of the output speed of an IVT with an accurate speed ratio. The speed ratio of an IVT with the disclosed control strategy can achieve an excellent tracking response for the desired constant output speed and reduce speed fluctuations of the output speed of an IVT by the time-delay feedback control.

Abstract: A multi-stage hybrid Darrieus-modified-Savonius (HDMS) vertical axis wind or water turbine (VAWT) for aero-hydro energy harvesting. The HDMS VAWT can continuously harvest fluid energy, including wind and water energy, provides excellent self-starting capability, has enhanced structural stability, and a high energy harvesting efficiency.

Abstract: Various implementations include loudspeaker drivers. In some aspects, an electro-acoustic driver includes: a cup section; a core section at least partially housed in the cup section, the core section including: a primary magnet; and a coin adjacent to the primary magnet; a bobbin surrounding the core section between the cup section and the core section, where the bobbin and the core section define an inner magnetic gap; a coil surrounding the bobbin and a portion of the core section; and a ferrofluid located at the inner magnetic gap, where the driver has an outer diameter less than or equal to approximately 10 millimeters.

Abstract: A nonlinear closed-loop control combined with an integral time-delay feedback control is disclosed to adjust a speed ratio of an infinitely variable transmission (IVT) system. A speed ratio control for an IVT system involves a forward speed controller and a crank length controller for different speed ranges. The time-delay control is designed to reduce speed fluctuations of the output speed of an IVT with an accurate speed ratio. The speed ratio of an IVT with the disclosed control strategy can achieve an excellent tracking response for the desired constant output speed and reduce speed fluctuations of the output speed of an IVT by the time-delay feedback control.

Abstract: A nonlinear closed-loop control combined with an integral time-delay feedback control is disclosed to adjust a speed ratio of an infinitely variable transmission (IVT) system. A speed ratio control for an IVT system involves a forward speed controller and a crank length controller for different speed ranges. The time-delay control is designed to reduce speed fluctuations of the output speed of an IVT with an accurate speed ratio. The speed ratio of an IVT with the disclosed control strategy can achieve an excellent tracking response for the desired constant output speed and reduce speed fluctuations of the output speed of an IVT by the time-delay feedback control.

Abstract: Various implementations include loudspeaker drivers. In some aspects, an electro-acoustic driver includes: a cup section; a core section at least partially housed in the cup section, the core section including: a primary magnet; and a coin adjacent to the primary magnet; a bobbin surrounding the core section between the cup section and the core section, where the bobbin and the core section define an inner magnetic gap; a coil surrounding the bobbin and a portion of the core section; and a ferrofluid located at the inner magnetic gap, where the driver has an outer diameter less than or equal to approximately 10 millimeters.

Abstract: This invention relates to a fiber placement head integrating tow converging mechanism, comprising: fiber placement head mounting base; fixed yarn box component and revolving yarn box component arranged at the side end of the fiber placement head mounting base, tow passage formed between the revolving mounting face of the said fiber placement head mounting base and the relative face of the revolving yarn box component; tow conveying components respectively arranged on the sides of the fixed yarn box component and revolving yarn box component; and tow converging mechanism for guiding and converging tows conveyed by tow conveying components. Through appropriate design of guide pulley and tow passage, the fiber placement head realizes the guiding and converging of multiple tows, avoiding intervening among the tows.

Abstract: Methods, apparatus, systems, and articles of manufacture are disclosed for regulated hybrid converters. An example apparatus includes an input terminal; an output terminal, a first converter circuit coupled between the input terminal and an intermediate node, the first converter circuit having a first switch node, a second converter circuit coupled between the intermediate node and the output terminal, the second converter circuit having a second switch node; a first inductor coupled between the first switch node and the second switch node, and a second inductor coupled between the second switch node and the output terminal.

Abstract: A multi-stage hybrid Darrieus-modified-Savonius (HDMS) vertical axis wind or water turbine (VAWT) for aero-hydro energy harvesting. The HDMS VAWT can continuously harvest fluid energy, including wind and water energy, provides excellent self-starting capability, has enhanced structural stability, and a high energy harvesting efficiency.

Abstract: This invention relates to a cutter device for automated composite material placement equipment, including cutter component, drive mechanism that drives the cutter component to slide, and guide mechanism that provides slide room for the cutter component, the said guide mechanism comprises: cutter stop, base, cover plate arranged on the base, and cutting board arranged between the base and the cover plate; guide groove for accommodating cutter component slide is provided at the said base's contact side with the cutting board; the said cutter stop is arranged at the outer side of the guide groove to limit the cutter component from sliding out; the said cutting board has a protruding part relative to the base and the cover plate, a first tow guide hole is provided on the said protruding part; a second tow guide hole coaxial with the first guide hole is provided at the said cutter stop, a cutter avoidance groove is further provided at the said cutter stop's side close to the cutting board, and the second tow guide

Abstract: Methods, apparatus, systems, and articles of manufacture are disclosed for a dynamically adjustable gate driver for switching devices. An example power switching system includes a gate driver circuit including gate driver segments to adjust a transition time of a switch from a first time to a second time in response to a segment control signal, the transition time corresponding to a time to change a state of the switch, and a controller to obtain a first trip signal to indicate that a voltage exceeds a first threshold, obtain a second trip signal to indicate that the voltage is less than a second threshold, and transmit the segment control signal to the gate driver circuit when the switch is to change state and when the voltage exceeds the first threshold or is less than the second threshold.

Abstract: An apparatus includes first and second power converter stages, each stage having a primary side and a secondary side. The primary side of the first stage includes a switch T1A coupled to a voltage source and a switch T3A coupled to the switch T1A. The primary side of the second stage includes a switch T2A coupled to the switch T3A and a switch T4A coupled to the switch T3A and to the voltage source. The apparatus includes a control circuit to control an on/off time of the switches. The control circuit includes four gate driver controllers to control the on/off time of the switches and a current sharing control section to increase or decrease the on time of a switch based on a comparison of a current through one of multiple output inductors to an average current through the multiple output inductors.

Abstract: This invention relates to a creel structure integrated on the fiber placement head of the automated placement equipment, comprising: fiber placement head mounting base, fixed yarn box component fixed and mounted on fiber placement head mounting base, and revolving yarn box component mounted on fiber placement head mounting base, the said revolving yarn box component is coupled with the fiber placement head mounting base through revolving shaft. This creel structure can avoid intervention that arise due to equipment maintenance and spindle replacement, making equipment maintenance and spindle replacement more convenient and swift.

Abstract: A fiber coil mounting device is used in automated composite material layup equipment. The fiber coil mounting device includes a fiber coil mounting shaft with axial hollow structure, a fiber stop plate disposed on two sides of the fiber coil mounting shaft, and an anti-slide fiber coil tightening mechanism. The anti-slide fiber coil tightening mechanism includes a piston assembly disposed inside the axial hollow structure, a spring piece disposed on the piston assembly, a driving unit controlling an axial slide of the piston assembly, and a tightening unit driven by an axial force produced by the spring piece during the axial slide of the piston assembly.

Abstract: This invention relates to a cutter device for automated composite material placement equipment, including cutter component, drive mechanism that drives the cutter component to slide, and guide mechanism that provides slide room for the cutter component, the said guide mechanism comprises: cutter stop, base, cover plate arranged on the base, and cutting board arranged between the base and the cover plate; guide groove for accommodating cutter component slide is provided at the said base's contact side with the cutting board; the said cutter stop is arranged at the outer side of the guide groove to limit the cutter component from sliding out; the said cutting board has a protruding part relative to the base and the cover plate, a first tow guide hole is provided on the said protruding part; a second tow guide hole coaxial with the first guide hole is provided at the said cutter stop, a cutter avoidance groove is further provided at the said cutter stop's side close to the cutting board, and the second tow guide

Abstract: A fiber coil mounting device is used in automated composite material layup equipment. The fiber coil mounting device includes a fiber coil mounting shaft with axial hollow structure, a fiber stop plate disposed on two sides of the fiber coil mounting shaft, and an anti-slide fiber coil tightening mechanism. The anti-slide fiber coil tightening mechanism includes a piston assembly disposed inside the axial hollow structure, a spring piece disposed on the piston assembly, a driving unit controlling an axial slide of the piston assembly, and a tightening unit driven by an axial force produced by the spring piece during the axial slide of the piston assembly.

Abstract: This invention relates to a fiber placement head integrating tow converging mechanism, comprising: fiber placement head mounting base; fixed yarn box component and revolving yarn box component arranged at the side end of the fiber placement head mounting base, tow passage formed between the revolving mounting face of the said fiber placement head mounting base and the relative face of the revolving yarn box component; tow conveying components respectively arranged on the sides of the fixed yarn box component and revolving yarn box component; and tow converging mechanism for guiding and converging tows conveyed by tow conveying components. Through appropriate design of guide pulley and tow passage, the fiber placement head realizes the guiding and converging of multiple tows, avoiding intervening among the tows.

Abstract: This invention relates to a creel structure integrated on the fiber placement head of the automated placement equipment, comprising: fiber placement head mounting base, fixed yarn box component fixed and mounted on fiber placement head mounting base, and revolving yarn box component mounted on fiber placement head mounting base, the said revolving yarn box component is coupled with the fiber placement head mounting base through revolving shaft. This creel structure can avoid intervention that arise due to equipment maintenance and spindle replacement, making equipment maintenance and spindle replacement more convenient and swift.