Essays about: "ground roughness class"

Found 2 essays containing the words ground roughness class.

  1. 1. Computational sound propagation models: An analysis of the models Nord2000, CONCAWE, and ISO 9613-2 for sound propagation from a wind farm

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Jôse Lorena Guimarães da Silva; [2017]
    Keywords : Nord2000; CONCAWE; ISO 9613-2; noise propagation; noise wind turbines.;

    Abstract : The recent goals from some countries to become renewable energy based and reduce carbon dioxide emissions have caused the wind industry to grow. Together, the size of the wind farms and the noise emission have grown, while the noise emission regulations have to be fulfilled. READ MORE

  3. 2. Markberedning i blockrik terräng : en jämförelse mellan grävmaskin och harv

    University essay from SLU/Dept. of Forest Ecology and Management

    Author : Louise Magnusson; [2015]
    Keywords : död ved; lågor; naturhänsyn; planteringspunkter; skador; ytstrukturklass; dead wood; coarse woody debris; nature conservation; planting spots; damages; ground roughness class;

    Abstract : Runt 70 % av skogsföryngringen i Sverige utförs genom plantering efter maskinell markberedning. På de flesta marker uppnås tillräckligt antal godkända planteringspunkter men vid riklig förekomst av block som hindrar eller stör markberedningsaggregatet blir det problem. READ MORE