Sweden

2021, Biology, Sweden / 20.07.2021

This study investigates the antibacterial effect of silver ions on Escherichia Coli and Bacillus Subtilis. It aims to clarify the correlation between the silver ion concentration and the antibacterial effect. The well diffusion method was used in the experiment, where five different concentrations of silver ions were examined (0, 1, 5, 20 and 50 mM). Every concentration was tested 12...

2021, Physics, Sweden / 20.07.2021

How airplanes fly is one of the most important questions within the field of air- and spacecraft development. By studying how paper airplanes behave, one can develop knowledge on flight principles. The purpose of this scientific report was to gain a better understanding of how the design of a paper airplane affected the longest possible flight distance. The studies show...