Sökning: "zakrisson"

Visar resultat 1 - 5 av 15 avhandlingar innehållade ordet zakrisson.

  1. 1. Numerical and experimental studies of blast loading

    Författare :Björn Zakrisson; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Hållfasthetslära; Solid Mechanics;

    Sammanfattning : In the past decade, there has been an increasing demand from governments for high level protections for military vehicles against explosives. However, designing and validation of protection is a time consuming and expensive process, where previous experience plays an important role. LÄS MER

  3. 2. Numerical simulations of blast loaded steel plates for improved vehicle protection

    Författare :Björn Zakrisson; Gerald Nurick; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Hållfasthetslära; Solid Mechanics;

    Sammanfattning : In the past decade, there has been an increasing demand from governments for high level protections for military vehicles against explosives. However, the design and validation of protection is a time consuming and expensive process, where previous experience plays an important role. LÄS MER

  4. 3. Social attitudes in a developmental perspective

    Författare :Ingrid Zakrisson; Stockholms universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES;

    Sammanfattning : .... LÄS MER

  5. 4. External Growth Control of Baltic Sea Cyanobacteria

    Författare :Anna Zakrisson; Ulf Larsson; Jakob Walve; Elena Gorokhova; Catherine Legrand; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Cyanobacteria; Baltic Sea; diazotrophs; diazotrophy; heterocysts; primary productivity; stable isotopes; sewage treatment; Marine Ecology; marin ekologi;

    Sammanfattning : The overall aim of the study was to provide better insights to the ecological role and impact of cyanobacteria in Baltic Sea (BS) bay, coastal and open sea areas. Biomass and heterocyst development of diazotrophic, heterocystous cyanobacteria were monitored over several years simultaneously as physical parameters such as nutrients and temperature. LÄS MER

  7. 5. External Growth Control of Baltic Sea Cyanobacteria

    Författare :Anna Zakrisson; Ulf Larsson; Jakob Walve; Elena Gorokhova; Sanna Suikkanen; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Baltic Sea; cyanobacteria; nitrogen fixation; heterocysts; Aphanizomenon; Nodularia; water treatment; Himmerfjärden; sewage; climate; Marine Ecology; marin ekologi;

    Sammanfattning : In the Himmerfjärden Bay a large excess of nitrogen over phosphorus in the discharge from a large sewage treatment plant (STP) has suppressed growth of diazotrophic cyanobacteria in its inner parts. Implementation of nitrogen removal in the STP in 1997 drastically reduced nitrogen load and triggered growth of diazotrophs, mainly Aphanizomenon sp. LÄS MER