Abstract: Disclosed is a system for upconversion chemiluminescence detection based on magnetic microparticles. A sample carrying module is disposed on a working surface and configured to input, preload, and output a plurality of samples. A gripping module is configured to grip a reaction cup and a pipette tip. A sample aspiration and dispensing module is configured to aspirate one of the plurality of samples and reagents and dispense one of the plurality of samples and the reagents into the reaction cup. The reagents include at least a monoclonal antibody reagent bound with magnetic microparticles and a monoclonal antibody reagent labeled with an up-converting phosphor. A detection preparation module is configured to perform one or more cycles of mixing, incubation, and washing and separation on the sample and the reagent. An optical measurement module is configured to excite an up-converting luminescent label and detect a fluorescence signal intensity.

Abstract: The present invention belongs to the technical field of pesticides and provides a regulator for highland barley and preparation method and application thereof. The regulator uses water as a solvent and includes components with the following concentrations: 60-84 g/L of lentinan, 150-210 g/L of ethephon, 100-140 g/L of polyaspartic acid salt, and 15-25 mL/L of active agent. The regulator of the present invention can induce highland barley to establish a huge root system, increase the toughness of highland barley stems, dwarf the length of highland barley internodes, reduce plant height, and improve the ability of highland barley to resist lodging; at the same time, it can improve the photosynthetic performance of highland barley leaves and the development of spikes, and promotes high and stable yield of highland barley.

Abstract: Embodiments of the present disclosure provide a system for continuous scanning monitoring and analysis based on a discrete three-dimensional fluorescence technology. The system comprises a high-pressure capillary gel electrophoresis mechanism configured to enable passages of different lengths of STR sequence fragments and nucleic acid gene fragments in an energized state; a sampling window unit configured to assemble a plurality of capillary tubes and a plurality of detection optical fibers shared by an excitation light and excited light; and a detection window unit configured to assemble the plurality of detection optical fibers and a fluorescence signal detection unit. The fluorescence signal detection unit is configured to output a plurality of single excitation light sources and obtain fluorescence signals.

Abstract: A switch mode power supply (SMPS) has a primary-side controller configured to control a power switch for turning on and turning off a current flow in the primary winding. A secondary-side controller is coupled to the secondary winding for providing constant voltage (CV) and constant current (CC) control of the SMPS. The secondary-side controller is configured to receive an output selection signal and, based on the output selection signal, select a voltage reference signal from a plurality of voltage reference signals and select a current reference signal from a plurality of current reference signals. The secondary-side controller is configured to monitor an output voltage and an output current of the SMPS, and is configured to provide a turn-on signal to the primary-side controller for turning on the power switch upon determining that the output voltage is below the selected voltage reference signal and the output current is below the selected current reference signal.

Abstract: The present invention relates to a method for detecting time-resolved fluorescence based on a principle of phase balanced frequency multiplication modulation. A stimulating light source modulated by using a baseband signal acts on a to-be-measured target to trigger fluorescence, so that the fluorescence intensifies and decays periodically; then, a frequency-doubled square signal is used to control a sampling period and divide an ascending period of the fluorescence into two and a decay period of the fluorescence into two; after independent sampling is performed separately, sampling differences of the two parts are separately calculated and then added to obtain an intensity representative value of a fluorescence signal and to obtain a concentration value of the to-be-measured target.

Abstract: The present invention relates to a method for detecting time-resolved fluorescence based on a principle of phase balanced frequency multiplication modulation. A stimulating light source modulated by using a baseband signal acts on a to-be-measured target to trigger fluorescence, so that the fluorescence intensifies and decays periodically; then, a frequency-doubled square signal is used to control a sampling period and divide an ascending period of the fluorescence into two and a decay period of the fluorescence into two; after independent sampling is performed separately, sampling differences of the two parts are separately calculated and then added to obtain an intensity representative value of a fluorescence signal and to obtain a concentration value of the to-be-measured target.

Abstract: A switch mode power supply (SMPS) has a primary-side controller configured to control a power switch for turning on and turning off a current flow in the primary winding. A secondary-side controller is coupled to the secondary winding for providing constant voltage (CV) and constant current (CC) control of the SMPS. The secondary-side controller is configured to receive an output selection signal and, based on the output selection signal, select a voltage reference signal from a plurality of voltage reference signals and select a current reference signal from a plurality of current reference signals. The secondary-side controller is configured to monitor an output voltage and an output current of the SMPS, and is configured to provide a turn-on signal to the primary-side controller for turning on the power switch upon determining that the output voltage is below the selected voltage reference signal and the output current is below the selected current reference signal.