A method and device for detecting pyrethroid pesticide residues in crops. Reaction membrane is arranged on a bottom plate and provided with a check-up line and a quality control line; a first mounting block and a second mounting block are arranged on the bottom plate; a first slide is arranged in the first mounting block, a second slide is arranged in the second mounting block; a sample pad and a bonding pad are arranged in the first slide; a water absorption pad is arranged in the second slide; a liquid inlet provided with a pipe is formed in the first mounting block, a pressing hole provided with a press block is formed in the second mounting block; protrusions are respectively formed on the pipe and the press block; sliding grooves are formed in the liquid inlet and the pressing hole; and first springs are arranged between the protrusions and the sliding grooves.

Disclosed are improved soil mapping methods and apparatus that enable a user to efficiently analyze soil and create accurate soil maps to enable the user to determine soil content. The apparatus includes a probe cylinder, an extractor cylinder, a collector assembly, a first stepper motor, a roller assembly, a mixing motor, a contact probe, a cleaning brush motor, a bracket assembly for a mix motor, brush motor, and probe, an extruded aluminum bracing, a gear track, a second stepper motor, a scraper assembly, a third stepper motor, a probe, and one or more hyperspectral sensors. The apparatus relies on less expensive, faster, and more accurate data points that provide actionable real-time information by automating the current labor-intensive soil testing process. The apparatus serves the agricultural industry by advancing precision soil mapping technology to support proactive and efficient fertilizer use. Further, the apparatus helps farmers to increase crop yields, optimize input costs, and protect the environment by supporting fertilizer efficiency.

A device and method for preparing a sample for solid-liquid or liquid-liquid extraction are provided. In one embodiment, a device includes a sealed container including an opening for receiving a solid sample and a reservoir. The reservoir includes a solvent or is adapted to receive a solvent. The solid sample and the solvent are mixed in the reservoir and to concentrate at least one component of the sample into the solvent within the reservoir. The concentrate is settled into a solvent layer within the container. The solvent layer is sampled via a port. A method includes introducing a solid sample to a solvent; creating a solution by mixing the solid sample with the solvent; allowing the solvent solution to settle into at least one layer; and sampling within at least one layer.

Various approaches preparing Cannabis flower samples for analysis of cannabinoid content, the method comprising the steps of weighing the sample in a portable or benchtop balance; adding, to a container, the weighed sample and a solvent; agitating the vial and thereafter extracting a liquid component therefrom; and analytically analyzing the sample using the solvent based on the weight and a volume of the extracted liquid.

A whole-process automatic soil tabletting machine is provided, which relates to the technical field of soil tabletting. The machine includes a device body. A tabletting platform is arranged at a bottom of the device body, a first station on which a heating device is arranged, second and third stations are arranged on the tabletting platform. A top plate is arranged at a top of the device body. A soil crushing cutter and a punch head are installed on the top plate. The soil crushing cutter and the punch head are arranged above the first and second stations respectively. The tabletting platform is installed with a groove disc where sample preparation grooves and a cleaning groove are formed. The sample preparation grooves and the cleaning groove correspond to the first station, the second station or the third station. The cleaning groove and each sample preparation groove are for placing a cleaning container and a soil sample container, respectively. According to the whole-process automatic soil tabletting machine, the problem that the preparation process of the soil sample is complex and tedious is solved, structures required by all processes are integrated together, and the automatic completion of thermal drying, powdering and compacting is realized.

The specification describes devices, methods, and kits for mincing biological tissue. The method includes conforming biological tissue to having about uniform cross-sectional area planes along its length, and cutting the biological tissue. The conforming and cutting is performed cooperatively to control the size of the minced biological tissue. The device is suitable for use with the method.

A method for determining absorption properties in clay deposits is provided that includes obtaining a clay sample, preparing the clay sample, analyzing the clay sample, and applying one or more correlative models to the clay sample. Additionally a system for use in determining absorption properties in clay deposits is provided that includes a plurality of inorganic particles, an analytical instrument configured to gather physical and/or chemical data about the inorganic particles, and a computer system configured to accept the physical and/or chemical data and/or generate correlations between the inorganic particles based on the data.

A disaggregation and homogenization device may be capable of photoactivation to improve heat resilience, photoactivation efficiency and simultaneous processing. Processes of disaggregation and homogenization may be handled in a simultaneous manner at will. A photoactivation means is also present such that rendering simultaneous utility of photoactivation and homogenization may be possible, and elimination of extra steps for preparation may be implemented. Protocols of the processes are registerable and adjustable in parameters i.e. rate of revolution and duration of process overall; and may be executed through an electronic control unit capable of storing and executing said protocols.

An assay is disclosed based on the successful transmission of DLB, and to a much lesser extent PD, to cultured HEK cells expressing the A53T and E46K point mutation. DLB prion activity was achieved by treatment of brain homogenates with detergent extraction and limited proteolysis followed by polyoxometalate precipitation of the prions. The results show the MSA strain of α-synuclein prions differs from those causing PD and DLB. Manipulating dominant negative inhibition of α-synuclein prions has created a new approach to identifying novel prions and deciphering the features of their multiplication.

The present disclosure discloses a method for evaluating the nutritional status in plants, using visible-to-shortwave (VIS-SWIR) infrared reflectance spectroscopy of carbohydrates, particularly in almond trees. The method comprises obtaining a dry plant sample (i.e. leaves, branches and roots), digesting and grinding it to a powder, capturing predetermined spectral data of the ground plant sample, correlating said spectral data to predetermined materials and evaluating said nitrogen status of said plants according to predetermined multivariate statistical models. The data obtained from this method facilitates crop management and fertilization by providing the nitrogen status of the plants based on non-structural carbohydrates.