In cases of severe infection, identifying the correct antibiotic – and doing so quickly – can be a matter of life and death. Here, a very fast test for antibiotic resistance is being developed. The goal is to reduce the time from taking a sample to getting a result from one day to under four hours. Watch the interview with Johan Elf, Professor at Department of Cell and Molecular Biology and Dan Andersson, Professor at Department of Medical Biochemistry and Microbiology and director at Uppsala An

In mathematics, the disk method is a technique used to calculate the volume of a solid generated by rotating a curve around an axis. The idea is to imagine slicing the solid into very thin circular disks perpendicular to the axis of rotation. Each disk has an area that depends on the distance from the axis, and by summing the volumes of all these disks, we approximate the entire solid. This process is formalized using integration, where the radius of each disk comes from the function being rotat