Noise is a growing health problem. People are not always aware of the injuries that noise can cause. The media culture of today has a big influence on teenagers. This is caused by portable music players, computers, concerts etc. The schools are having larg classes and that can cause a lot irrelevant speech during lessons.

The project was carried out with SwedSafe AB, engaged in hearing and manufacture of Earplugs. Since the company is a world leader in the sale of these products, it is important that they keep a higher level of quality of these products.Production of Earplugs is currently a automated manufacturing process that is divided into four conveyor belts and one of the conveyor belts is what will be affected in the project. The belt affected during this process is exposed to various elements such as filling, closing, fermentation and extraction of products. Because the belt gets dirty, degraded products and the work environment is affected. To increase the quality of products and improve the working environment requires an automatic cleaning process, which collects dirt from the belt.The aim of the project is to design a machine that prevents the belt from becoming dirty, preserve molds clean and improve the working environment without disrupting production.

Det är väl belagt att patienter postoperativt och inom intensivvården drabbas av en funktionell sömnbrist i form av störd dygnsrytm, stort antal uppvaknanden och rubbad sömncykel med underskott av djupsömn och REM-sömn. En delförklaring till sömnbristen är de generellt höga ljudnivåerna på intensivvårdsavdelningar. Syftet med föreliggande pilotstudie var att undersöka huruvida öronproppar kunde förbättra den upplevda sömnkvalitén för patienter inom intensivvård och postoperativt. Tjugotvå patienter från två intensivvårdsavdelningar, en hjärtintensivvårdsavdelning och en postoperativ avdelning deltog i studien. I interventions-gruppen sov elva patienter en natt med öronproppar och elva patienter som sov utan öronproppar utgjorde kontrollgrupp.