Sökning: "saw dust"

Visar resultat 1 - 5 av 20 uppsatser innehållade orden saw dust.

  1. 1. Effects of plastic pollution on leaf litter decomposition in Swedish freshwater ecosystems : a field study addressing recently and globally emerging pollutants

    Master-uppsats, SLU/Dept. of Aquatic Sciences and Assessment

    Författare :Martina Stangl; [2022]
    Nyckelord :Microplastics; Face masks; Ecosystem functioning; Leaf decomposition; Field study;

    Sammanfattning : Plastic pollution is recognized as an increasing environmental problem, but few studies have addressed impacts on ecosystem functions, and very few have been conducted in the field. This study investigated the effects of polypropylene particles derived from disposable face masks on in-situ leaf litter decomposition processes in freshwater ecosystems. LÄS MER

  2. 2. The Effect of Gravitational Encounters on Binary Planetesimals

    Master-uppsats, Lunds universitet/Astronomi - Genomgår omorganisation

    Författare :John Gillan; [2021]
    Nyckelord :Physics and Astronomy;

    Sammanfattning : Binary planetesimals in the Kuiper belt can experience close encounters with other bodies. These encounters can disturb the orbital dynamics of the binary in several ways. Energy can be added to the system by the impactor body and lead to the disruption of the binary. LÄS MER

  3. 3. Analys av mätnoggrannhet vid tjockleksmätning av plankor : En studie om hur olika faktorer påverkar mätnogrannheten vid tjockleksmätning av nysågade plankor

    Kandidat-uppsats, Karlstads universitet/Fakulteten för hälsa, natur- och teknikvetenskap (from 2013)

    Författare :Antonio Butkovic; [2020]
    Nyckelord :sågverk; lasertriangulering; plankor;

    Sammanfattning : För att vara säker på att man sågar rätt dimensioner på plankor så kontrollmäts dessa med hjälp av avancerade laserinstrument. Mätinstrumentet som Moelven Valåsen AB använder sig av kallas för RS-con och bygger på tekniken lasertriangulering. LÄS MER

  4. 4. Jordbrukets betydelse i stadsnära miljö : En undersökning av Umeå kommuns översiktsplanering för Röbäcksområdet

    Kandidat-uppsats, Umeå universitet/Institutionen för ekologi, miljö och geovetenskap

    Författare :Emil Österholm; [2018]
    Nyckelord :Agriculture; peri-urban; comprehensive plan;

    Sammanfattning : This study aimed to examine what role and how the agriculture will be affected in a periurban environment as by the comprehensive plan that the municipal has established for the Röbäck area. The study tried to value the importance and role for the agriculture today and in the future. LÄS MER

  5. 5. Characterization of Multi Plate Field Mill for Lunar Deployment

    Master-uppsats, Umeå universitet/Institutionen för fysik

    Författare :Clayton Forssén; [2018]
    Nyckelord :Field Mill; IQ; Demodulation; Electrical field; Moon; Precision; Allan variance; Characterization; CubeSat; Capacitor;

    Sammanfattning : During the Apollo 10 and 17 missions NASA astronauts reported that they saw streamers emanating from the surface of the moon. They concluded that the streamers were produced by light scattering from dust particles. The particles are believed to be transported by an ambient electric field. LÄS MER