Abstract:
A method for determining parameter values of an induction machine. The method may be executed by a dedicated computer system. The method includes sampling a voltage signal, a current signal and a rotational speed signal of the induction machine at the time the induction machine is started, calculating a resistance and a reactance of the induction machine at each of a plurality of slip rates according to the voltage signal and the current signal, calculating a plurality of coefficients of a polynomial fraction based on the resistances and the reactances, calculating the parameter values of an equivalent circuit according to the plurality of coefficients of the polynomial fraction, calculating a moment of inertia and a friction coefficient of the induction machine according to the calculated parameter values and the rotational speed signal of the equivalent circuit, and outputting the moment of inertia and the friction coefficient of the induction machine.
Abstract:
A photoelectric conversion device including a photoelectric converter, a transparent cover, an insulating material layer and a photonic crystal layer is provided. The photoelectric converter is adapted to receive a light. The transparent cover is disposed on a side of the photoelectric converter. The insulating material layer is disposed between the photoelectric converter and the transparent cover. The photonic crystal layer is disposed between the insulating material layer and the transparent cover, wherein the material of the photonic crystal layer is different from the material of the insulating material layer.
Abstract:
The invention discloses a method of manufacturing a lysin protein capable of directly lysing Acinetobacter baumannii without pretreatment processing using chloroform or EDTA, comprising: transforming an expression plasmid into E. coli, wherein the expression plasmid is deposited at DSMA-Deutsche Sammlung von Mikroorganismen and Zellkulturen with deposit number DSM32023; expressing the expressing plasmid by the E. coli to form lysin protein having an amino acid sequence as set forth in SEQ ID NO: 6; lysing the E. coli containing the lysing protein to obtain a supernatant by centrifugating the E. coli lysate; mixing the supernatant and Ni2+ resins, washing the unbound protein by a binding buffer containing 50 mM Tris-HCl (pH 8.2), 15 mM MgCl2, 20% (v/v) glycerol, 0.05% β-ME and 0.1 mM PMSF; and eluting the purified lysing protein by an elution buffer containing 50 mM Tris-HCl (pH 8.2), 15 mM MgCl2, 20% (v/v) glycerol, 0.05% β-ME, 0.1 mM PMSF and 250 mM imidazole.
Abstract:
An optical fiber communication method includes the steps of: providing an optical fiber that includes a core, and a second-order Bragg grating structure formed on the core; and emitting a data-carrying optical signal to an outer peripheral surface of the optical fiber that corresponds to the second-order Bragg grating structure in a radial direction of the optical fiber, so that the data-carrying optical signal is coupled into the core of the optical fiber via the second-order Bragg grating structure for transmission therein.
Abstract:
A power converting device includes a filter filtering an AC input voltage to generate a filtered voltage, a power factor corrector boosting the filtered voltage to generate a boosted voltage, and a step-down converter reducing the boosted voltage to generate a DC output voltage. The power factor corrector includes a capacitor, an inductor, two diodes and two switches. The inductor has a first terminal coupled to the filter, and a second terminal. The diodes are coupled in series across the capacitor. A common node between the diodes is coupled to the second terminal of the inductor. The switches are coupled in series across the capacitor. A voltage across one of the switches serves as the boosted voltage.
Abstract:
An iridium-doped carbon nanotube has an atomic ratio of iridium to carbon on a surface thereof ranging from 1×10−4 to 3.5×10−4 as measured by X-ray photoelectron spectroscopy. A working electrode including the aforesaid iridium-doped carbon nanotube and a sensor including the working electrode are also disclosed in the present invention.
Abstract:
A sensing method of an electrochemical sensor including the following steps is provided. First, a fluorescent material is immobilized on a surface of an electrode so as to form a sensing electrode. The sensing electrode is then used to execute an electrochemical test of a target in a light-shielding environment.
Abstract:
A light emitting diode (LED) driving circuit suitable for driving an LED load is provided. The LED driving circuit includes an AC voltage source, a bridge rectifier, a plurality of diodes, inductors, transistors and capacitors. The diodes, inductors, transistors and capacitors are configured to form a buck-boost converter and a buck converter, where the buck-boost converter and the buck converter share the transistors as active switches. Designer can design the LED driving circuit with zero-voltage switching-on using the diode characteristic of the existing active switches by selecting suitable circuit parameters.
Abstract:
A dye-sensitized solar cell includes a negative electrode, a positive electrode, a photoelectrode mounted between the negative electrode and the positive electrode, and an electrolyte located between the photoelectrode and the positive electrode. The photoelectrode is adapted to absorb a dye. The photoelectrode includes a dense layer, a scattering layer and a carrier transport layer. The dense layer, the scattering layer and the carrier transport layer are stacked one upon another. The dense layer is formed by titanium dioxide nanoparticles having a diameter of 15-20 nm. The scattering layer is formed by titanium dioxide nanospheres having a diameter of 200-500 nm. The carrier transport layer is formed by titanium dioxide nanotubes having a length of 300-800 nm. Furthermore, a photoelectrode for the dye-sensitized solar cell, as well as a method for producing the photoelectrode, are also disclosed.
Abstract:
An analgesic medication includes an oligonucleotide being a double strand RNA comprising 18 to 70 base pairs, and a pharmaceutical acceptable vehicle for delivering the said oligonucleotide into cells, wherein a dosage of the oligonucleotide in the analgesic is 50 μg to 200 μg/kg per time, and the pharmaceutical acceptable vehicle is selected from a group of polyethyleneimine, lipofectamine and iFect.
Abstract translation:止痛药包括含有18〜70碱基对的双链RNA的寡核苷酸,以及用于将所述寡核苷酸递送到细胞中的药物可接受载体,其中所述镇痛剂中的寡核苷酸的剂量为每次50ug至200ug / kg ,并且药物可接受的载体选自聚乙烯亚胺,脂质体和iFect组。