Sökning: "desert"

Visar resultat 36 - 40 av 64 avhandlingar innehållade ordet desert.

  1. 36. Modelling Transpiration and Growth of Salinity and Drought Stressed Tomatoes

    Författare :Louise Karlberg; KTH; []
    Nyckelord :water-use efficiency; osmotic effect; ion toxicity; semi-arid;

    Sammanfattning : Irrigation with saline waters is an agricultural practicethat is becoming increasingly common as competition for freshwater increases. In this thesis the mechanisms behind salinityand drought stress has been studied using data from fieldexperiments in combination with a modelling tool, theCoupModel. LÄS MER

  3. 37. Bacterial and fungal growth in soil: The effect of temperature and substrate addition

    Författare :Stephanie Reischke; MEMEG; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Bacterial growth; Fungal growth; Respiration; Carbon loading; Glucose mineralisation; Temperature adaptation; Temperature sensitivity; Temperature dependence;

    Sammanfattning : Bacteria and fungi are the main agents in decomposition of soil organic matter. Their activity is determined by the availability and quality of substrate, especially its content of carbon, but also nitrogen and phosphorus. Other environmental factors, which affect the activity of the microbial community in soil, are temperature, moisture and pH. LÄS MER

  4. 38. Land degradation and mitigation in northern China. Evaluated from the biological production

    Författare :Micael Runnström; Institutionen för naturgeografi och ekosystemvetenskap; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; marklära; geomorfologi; Fysisk geografi; climatology; kartografi; klimatologi; cartography; pedology; desertification; China; GPP; Mu Us; LUE-model; overgrazing; Physical geography; geomorphology;

    Sammanfattning : Land degradation is commonly perceived to be severe in many parts of semi arid China. The transition towards market economy since the 1978 reforms, have set marginal dry lands under added pressure in the form of increased livestock numbers and expanding cultivation on erosive soils. LÄS MER

  5. 39. Immune cell phenotypes of head and neck lesions associated with viral infections

    Författare :Aastha Sobti; Institutionen för immunteknologi; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Human papilloma virus HPV ; Epstein-Barr virus; tonsillar cancer; nasopharyngeal cancer; laryngeal papilloma; tumour microenvionment; Immune cells; flow cytometery; Spatial proteomics;

    Sammanfattning : Tonsillar cancer (TC) and nasopharyngeal cancer (NPC) are associated with high-risk humanpapillomavirus (HPV) and Epstein-Barr virus (EBV), respectively. Similarly, benign lesions, knownas laryngeal papilloma (LP), are associated with low-risk HPV. LÄS MER

  7. 40. Barn och brott : - En studie om socialtjänstens yttranden i straffprocessen för unga lagöverträdare

    Författare :Michael Tärnfalk; Anna Hollander; Lars Svedberg; Karsten Åström; Stockholms universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Children’s needs; crimes; social welfare; juvenile justice; punishment; barn; brott; behov; barns bästa; straffvärde; vård; straff; Social work; Socialt arbete; socialt arbete; Social Work;

    Sammanfattning : The aim of this thesis is to scrutinise the statements from the social authorities to the criminal courts in the juvenile justice process, and to analyse in what extent these statements influenced the criminal courts in their penalty sentencing for boys aged 15-17 years, suspected and convicted for assault and battery and grand assault and battery, in Stockholm County the years of 1998 and 2000.In 1998 a child’s perspective and the concept of the best interest of the child was introduced in the Social services act. LÄS MER