Sökning: "Saeed"

Visar resultat 1 - 5 av 44 avhandlingar innehållade ordet Saeed.

  1. 1. Priming of carbon and nitrogen mineralization in forest soils

    Författare :Saeed Alaei; MEMEG; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Soil organic matter; C:N imbalance; root exudates; priming; Extracellular enzymes; Soil organic matter; C:N imbalance; root exudates; priming; Extracellular enzymes;

    Sammanfattning : Decomposition of soil organic matter (SOM) contributes significantly to the global carbon (C) cycle and climate feedbacks. SOM decomposition depends on soil microbial activities, and these activities are driven by the availability of C and other nutrients. LÄS MER

  3. 2. Characterisation of airborne particles from rail traffic

    Författare :Saeed Abbasi; Ulf Sellgren; Ulf Olofsson; Mats Gustafsson; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; airborne; railway; brake; block; Other engineering mechanics; Övrig teknisk mekanik; SRA - Transport; SRA - Transport; Järnvägsgruppen - Effektiva tågsystem för godstrafik; Järnvägsgruppen - Effektiva tågsystem för godstrafik; Järnvägsgruppen - Effektiva tågsystem för persontrafik; Järnvägsgruppen - Effektiva tågsystem för persontrafik; Järnvägsgruppen - Tribologi; The KTH Railway Group - Tribology;

    Sammanfattning : Since the investigation of wear particles in rail transport started in late-1910s, the high mass concentration of these particles has raised worries among researchers concerned with air quality. However, effective action has yet to be taken because of lack of relevant knowledge. LÄS MER

  4. 3. Computational Modeling of the Vocal Tract : Applications to Speech Production

    Författare :Saeed Dabbaghchian; Olov Engwall; Sidney Fels; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; vocal tract; upper airway; speech production; biomechanical model; acoustic model; vocal tract reconstruction; Tal- och musikkommunikation; Speech and Music Communication;

    Sammanfattning : Human speech production is a complex process, involving neuromuscular control signals, the effects of articulators' biomechanical properties and acoustic wave propagation in a vocal tract tube of intricate shape. Modeling these phenomena may play an important role in advancing our understanding of the involved mechanisms, and may also have future medical applications, e. LÄS MER

  5. 4. Outdoor Comfort in Cold Climates : Integrating Microclimate Factors in Urban Design

    Författare :Saeed Ebrahimabadi; Sigrid Reiter; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Architecture; Arkitektur;

    Sammanfattning : Designing urban spaces that provide outdoor comfort is an important but challenging goal in subarctic climates. An approach to urban design that is sensitive to subarctic climatic conditions is essential, but this requires effective incorporation of urban climate knowledge into urban design, which presently is impeded by several barriers. LÄS MER

  7. 5. Targeting DNA repair pathways for cancer therapy

    Författare :Saeed Eshtad; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Accumulation of genomic mutations is the consequence of failure in DNA repair as well as increased exposure to endogenous/environmental mutagens. DNA repair pathways safeguard the human genome from such mutagens, and thereby suppress the multi-step process of carcinogenesis. LÄS MER