摘要：
The invention discloses a method for conveniently detecting aluminum ions based on carbon quantum dots synthesized from flavonoid glycosides and derivatives thereof. The method comprises steps of synthesizing the blue fluorescent carbon quantum dots with emission peaks at 400-480nm by taking flavonoid glycosides and derivatives thereof as precursors; inducing the blue fluorescent carbon quantum dots to generate green fluorescence of which the emission peak is located at 490-580nm by using the aluminum ions; and then under ultraviolet irradiation, obtaining a carbon quantum dot color fluorescence picture induced by the aluminum ions, and analyzing the picture by utilizing an RGB method to detect the concentration of the aluminum ions. The method is advantaged in that the strategy for synthesizing the carbon quantum dots from the flavonoid glycosides and the derivatives thereof and constructing portable Al detection based on the carbon quantum dots is provided, the Al is quantified according to change of different fluorescence colors of the carbon quantum dots under ultraviolet irradiation, so fluorescence color changes of samples with different concentrations under ultraviolet irradiation can be analyzed by means of a smart phone and RGB analysis software, and rapid detection of metal ions can be achieved.
摘要：
The invention discloses a container leveling transport vehicle adapting to ramp inflection point changes, and a working method thereof. The transport vehicle comprises a walking chassis and a container body, the container body is hinged to the walking chassis and can swing around a hinged axis to adjust the inclination angle, the walking chassis is provided with a swing driving assembly used for driving the container body to swing, and the front end and the rear end of the walking chassis are each provided with a ground distance measuring unit used for detecting the ground distance. The container leveling transport vehicle is simple in structure, low in cost and easy to implement and popularize. According to the working method, the distance between each the front end and the rear end and the ground is obtained according to the ground distance measuring units at the front end and the rear end of the walking chassis, the ramp angle is obtained through calculation, the walking chassis advancing speed and the container body levelness are adjusted according to ramps, leveling stability, reliability, control precision and timeliness are good, and control is easy.
摘要：
The invention discloses a method for extracting tea polysaccharide from tea residues. The method comprises the following steps: 1, tea residue pretreatment; 2, microwave wall breaking; 3, variable-frequency ultrasonic composite enzymolysis; 4, centrifugal concentration; 5, alcohol precipitation; and 6, washing and drying. According to the method, the advantages of various extraction methods are combined, the technical characteristics of microwave, ultrasonic wave and enzyme treatment are effectively combined, the wall breaking efficiency is effectively improved, the polysaccharide structure isnot damaged, and the yield and the antioxidant activity of the polysaccharide are remarkably improved.
