4results about How to "Easy speed control" patented technology

The present invention provides a method for directly detecting organophosphorus pesticides based on nano-biosensors, which realizes direct detection of organophosphorus pesticides OPs in one step by using a biosensor with carbon dots rich in phosphate groups on the surface, with high sensitivity and good specificity, and can avoid interference from components such as proteins, reducing sugars, amino acids, and metal ions, without the need for complex sample pre-treatment. The method comprises the following steps: using organic small molecules containing phosphate groups as raw materials, preparing carbon dots PCDs rich in phosphate groups on the surface by carbonization; mixing PCDs as fluorophores with dephosphorylase to construct a nano-biosensor; mixing organophosphorus pesticides OPs of known different concentrations with the nano-biosensor, measuring the fluorescence spectrum of the nano-biosensor after standing, and drawing a standard curve; mixing the OPs sample to be detected with the nano-biosensor, measuring the fluorescence spectrum of the nano-biosensor, and calculating the concentration of the OPs to be detected according to the standard curve.

The invention discloses a plate pre-drawing and dieless mirror image loading composite forming process and a product, and belongs to the technical field of metal component forming and manufacturing. The method is used for solving the problems of cracking, ultra-poor thinning, low dimensional precision and the like in the forming process of the high-strength aluminum alloy thin-wall component with local continuous large-area bulge and local large wall angle characteristics in the aerospace field. According to the method, through two-stage area expansion distribution, the thinning amount of each stage is effectively controlled, and the cracking problem caused by one-time large deformation in a single process is avoided. And mirror images are cooperatively loaded on the local part of the plate to form a three-dimensional stress state, so that the forming limit is improved. And in-mold constraint aging synchronously realizes strengthening and shape righting, and is obviously superior to the traditional process.

The utility model relates to the technical field of detection samplers, in particular to a glue stabilizer detection sampler, which comprises a sampling device, a leading-out device, a leading-out pipe and a cock, the bottom of the sampling device is provided with the leading-out device, the bottom of the leading-out device is provided with the leading-out pipe, and the leading-out pipe is provided with the cock. The glue stabilizer storage device is provided with the leading-out device, the capacity of a glue stabilizer in the second storage pipe is conveniently observed through the scale layer, the outflow amount and the outflow rate of the glue stabilizer are conveniently controlled through the cock, the second storage pipe is conveniently held and rotated through the wear-resistant pad, and the second storage pipe is prevented from sliding in the rotating process; multiple times of detection can be carried out through the guiding device, errors are reduced, the capacity of the glue stabilizer needed by detection can be conveniently controlled, and use is convenient. The sampling device is arranged, so that single-hand sampling is facilitated through the arrangement of the clamping ring, and the sampling device is more convenient to use.