Sökning: "purple bacteria."

Visar resultat 1 - 5 av 15 avhandlingar innehållade orden purple bacteria..

  1. 1. Energy Transfer Patterns in Photosynthetic Antenna System of Purple Bacteria

    Författare :Susan Hess; Kemisk fysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; optics; Electromagnetism; mykologi; virologi; bakteriologi; photosynthesis; Mikrobiologi; Picosecond and femtosecond spectroscopy; energy transfer; purple bacteria.; Microbiology; bacteriology; mycology; virology; acoustics; Elektromagnetism; optik; akustik; Fysicumarkivet A:1997:Hess;

    Sammanfattning : Steady state and time-resolved absorption and fluorescence spectroscopy have been used to investigated the energy transfer in photosynthetic purple bacteria. Picosecond light pulses were used in measurements of Rb. LÄS MER

  3. 2. Big Lessons from Small Bacteria : Following Photo-driven Processes in Photosynthetic Systems with Multidimensional Spectroscopy

    Författare :Egle Bukarte; Kemisk fysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Two-dimensional electronic spectroscopy; Ultrafast spectroscopy; Chlorophyll; Bacterial reaction centers; Photosynthetic unit; Purple bacteria; Green bacteria;

    Sammanfattning : Sunlight is a plentiful, continuously flowing source of energy, fuelling life on Earth as we know it. To use this potential, plants, cyanobacteria and photosynthetic bacteria evolved to absorb solar radiance and convert it into a chemically stable form by performing a process known as photosynthesis. LÄS MER

  4. 3. Structural studies of saccharopine reductase and purple acid phosphatase

    Författare :Eva Johansson; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Lysine is synthesised in two different ways in living organisms, either by the diaminopimelate pathway or the [alpha]-aminoadipate pathway. These routes belong to the aspartate and the glutamate family of amino acid biosynthesis, respectively. LÄS MER

  5. 4. Environmental and climatic changes in the Baltic Sea and the eastern Mediterranean Sea : as recorded by pigments and isotopes in sediments

    Författare :Johanna Borgendahl; Rolf Hallberg; Joyanto Routh; Stefano Bernasconi; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Earth sciences; Geovetenskap;

    Sammanfattning : This thesis is a study of Holocene sapropels from two semi-enclosed seas; the Baltic Sea and the Mediterranean Sea. Sapropels are sedimentary layers with organic C > 2%. LÄS MER

  7. 5. Regulation of nitrogen fixation in Rhodospirillum rubrum : Through proteomics and beyond

    Författare :Tiago Selao; Agneta Norén; Daniel Arp; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Rhodospirillum rubrum; nitrogen fixation; redox balance; switch-off; DRAT; Biochemistry; Biokemi; Biochemistry; biokemi;

    Sammanfattning : Adaptability is one of the reasons for the success of bacteria, allowing them to survive in conditions where no other organisms would be able to thrive. Nitrogen deficiency, for example, can be a limiting factor for the growth of micro-organisms, as this element is an essential part of almost all types of biomolecules. LÄS MER