Abstract: A non-invasive time domain reflection probe calibration method includes: using different volume ratio of ethanol and deionized water mixed solution to calculate a test target's medium weight coefficient and waveguide length of the non-invasive time domain reflection probes; using different concentrations of NaCl solutions to calibrate a waveguide geometric dimensioning of the non-invasive time domain reflection probes; preparing compacted soil samples with known different moisture contents and densities, and calibrating a correlation parameter of compacted soil samples' dielectric constant and conductivity with moisture content and density. The method not only determines the sensitivity of the test target medium of the non-invasive time domain reflection probes, but also obtains the waveguide length and geometric dimensioning of the probe, and realizes an accurate test of moisture content and density of the soil.

Abstract: A gate driver system includes a transistor configured to be driven between switching states, the transistor including a control terminal controlled by a control voltage that has a maximum rated limit; and a gate driver coupled to the control terminal by a turn-on current path, the gate driver being configured to control the control voltage in order to drive the transistor between the switching states. The turn-on current path includes a resistor and a Zener diode connected in series, with an anode of the Zener diode connected to the control terminal and a cathode of the Zener diode connected to the resistor. The turn-on current path is configured to provide an on-current to increase the control voltage above a switching threshold. While the transistor is turned on, the Zener diode is configured to limit the control voltage to a voltage level limit that is less than the maximum rated limit.

Abstract: A gate driver system includes a transistor configured to be driven between switching states, the transistor including a control terminal controlled by a control voltage that has a maximum rated limit; and a gate driver coupled to the control terminal by a turn-on current path, the gate driver being configured to control the control voltage in order to drive the transistor between the switching states. The turn-on current path includes a resistor and a Zener diode connected in series, with an anode of the Zener diode connected to the control terminal and a cathode of the Zener diode connected to the resistor. The turn-on current path is configured to provide an on-current to increase the control voltage above a switching threshold. While the transistor is turned on, the Zener diode is configured to limit the control voltage to a voltage level limit that is less than the maximum rated limit.

Abstract: A preparation method and a product of thermoplastic carbon fiber fabric prepreg are provided. The preparation method includes: covering a thermoplastic polyimide non-woven fabric on a carbon fiber fabric to obtain a laminated structure, pressing the laminated structure, then spraying polyphenylene sulfide nanoparticles onto the thermoplastic polyimide non-woven fabric, and performing a two-stage hot melting preparation process which includes: in a first stage, heating up to make the polyphenylene sulfide nanoparticles be melted and infiltrate and keeping a hot melting time of 5-10 min; and in a second stage, heating up to make the thermoplastic polyimide non-woven fabric be melted and infiltrate into the carbon fiber fabric and cooling down after a duration of heat preservation to prepare the thermoplastic carbon fiber fabric prepreg. The thermoplastic carbon fiber fabric prepreg prepared by the two-stage hot melting has high strength and may be stored for a long period.

Abstract: 1,4-dicaffeoylquinic acid is used as a xanthine oxidase inhibitor and in preparation of a medicament for treating gout. The present invention is the first to isolate and identify five dicaffeoylquinic acid compounds from Artemisia selengensis leaves. The compound not only has an ability of inhibiting xanthine oxidase activity, but also has the function of anti-gout inflammation, which can be better used for treating gout. The dicaffeoylquinic acid is derived from natural plants and has the advantages of being safe and non-toxic, and having fewer side effects.

Abstract: 1,4-dicaffeoylquinic acid is used as a xanthine oxidase inhibitor and in preparation of a medicament for treating gout. The present invention is the first to isolate and identify a dicaffeoylquinic acid compound from Artemisia selengensis leaves. The compound not only has an ability of inhibiting xanthine oxidase activity, but also has the function of anti-gout inflammation, which can be better used for treating gout. The dicaffeoylquinic acid is derived from natural plants and has the advantages of being safe and non-toxic, and having fewer side effects.

Abstract: 1,4-dicaffeoylquinic acid is used as a xanthine oxidase inhibitor and in preparation of a medicament for treating gout. The present invention is the first to isolate and identify a dicaffeoylquinic acid compound from Artemisia selengensis leaves. The compound not only has an ability of inhibiting xanthine oxidase activity, but also has the function of anti-gout inflammation, which can be better used for treating gout. The dicaffeoylquinic acid is derived from natural plants and has the advantages of being safe and non-toxic, and having fewer side effects.