Essays about: "Air measurement"

Showing result 1 - 5 of 197 essays containing the words Air measurement.

  1. 1. Air quality around preschools in Gothenburg: an evaluation of measurement methods

    University essay from Göteborgs universitet / Institutionen för biologi och miljövetenskap

    Author : Emma Forsmalm; [2023-06-21]
    Keywords : low-cost sensors; passive diffusion samplers; pick-ups and drop-offs; regulatory measurements;

    Abstract : In this study the air quality around four different preschools, chosen to represent different local traffic environments, was measured and the measurement methods used were evaluated. The aim was to compare the information retrieved using different methods, discuss the possible applications of them and finally see if more specific activities, in this case pick-ups and drop-offs, could be seen in the data retrieved. READ MORE

  3. 2. Developing a Test Method to Evaluate the Blackout Effect of Uncoated Curtains at Varying Angles

    University essay from Högskolan i Borås/Akademin för textil, teknik och ekonomi

    Author : Sara Muminovic; Christina Lindén; [2023]
    Keywords : Blackout effect; blackout curtain; uncoated woven curtains; angle interval; light transmission; light box; light diffuser; microscopic image analysis;

    Abstract : This study aimed to explore the integration of varying angles in small-scale measurements and assess the light transmission performance of uncoated curtains. A total of four curtains were evaluated: blackout curtain samples 1 and 2 had a weft satin structure, while daytime curtain samples 3 and 4 consisted of a twill structure. READ MORE

  4. 3. Digital Valve-Jet Printing of Chitosan Ink on Cotton Fabric for Antibacterial and Comfort Properties

    University essay from Högskolan i Borås/Akademin för textil, teknik och ekonomi

    Author : Media Haghi; [2023]
    Keywords : Chitosan; Digital printing; Valve-jet printing; ChromoJet printer; Antibacterial textile; cotton fabric;

    Abstract : Throughout history, the spread of microorganisms has caused much damage including infectious diseases and deaths. Ever since humans realized the impact of bacteria especially on population health many efforts have been done to combat the spread of pathogens. READ MORE

  5. 4. Standardized Test Methods in Over-the-Air Chambers for FCC Part 27

    University essay from Umeå universitet/Institutionen för fysik

    Author : Oskar Hellström; [2023]
    Keywords : ;

    Abstract : Base stations (BSs) are the cornerstone that enables wireless communications. In order for a new BS variant to be imported and sold in the US they are required to undergo electromagnetic compatibility (EMC) testing. This testing is necessary to obtain their Federal Communications Commission (FCC) certification. READ MORE

  6. 5. The Potential of Dissolved Air Flotation for PFAS Reduction in Norrvatten's Future Waterworks

    University essay from KTH/Kemiteknik

    Author : Madeleine Vikström; [2023]
    Keywords : PFAS4; drinking water production; dissolved air flotation; granular activated carbon filter; sludge management; PFAS4; dricksvattenproduktion; flotation; granulärt aktivt kolfilter; slamhantering;

    Abstract : Norrvatten är en av Sveriges största dricksvattenproducenter. Med ett ökande behov av en större produktionskapacitet och nya regleringar, planerar dem att förbättra sin reningsprocess. En aspekt som kräver omfattande undersökning är val av reningsmetod för att nå den nya gränsen från Livsmedelsverket för fyra PFAS kemikalier. READ MORE