Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 117 for “"Green Algae"”.
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Photoprotection and chloroplast regulation in the green algae Chlamydomonas reinhardtii
… (ROS) causing cell damage and death. Plants and algae have evolved conserved photoprotective responses that, at the level of light harvesting, are collectively measured as non-photochemical quenching (NPQ) of chlorophyll fluorescence. The major components of NPQ are thermal dissipation of excess …
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Pattern formation and hydrogen production in suspensions of swimming green algae
… formation by the photo-gyrotactic unicellular green alga species Chlamydomonas nivalis is presented. Fourier analysis is used to extract the wavelength of the initial dominant mode. Variations in red light illumination are found to have no significant effect on the initial pattern wavelength. …
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Endoreduplication in green algae: Its mechanistic basis and potential for increased biofuel production
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2026-12-01
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The use of image processing techniques for the automated detection of blue-green algae
… of particular organisms, for example blue-green algae. Currently the detection of these algae is done in a very time consuming manual way, involving highly trained biologists, for example those employed by the National Rivers Authority. This thesis is a first investigation in the automatic …
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Prymnesium parvum effects on green algae, cladocerans and fish in field and laboratory studies.
Prymnesium parvum, commonly named "golden algae," has severely impacted fisheries in Texas, USA and other parts of the world. This study explored the environmental conditions during fish kills in Texas inland waters known to trigger P. parvum bloom formation and ecological impacts on a fish model, …
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THE RISE OF THE GREEN ALGAE: USING ALGAL PALYNOMORPHS AS PROXIES OF NATURAL EVENTS AND ANTHROPOGENIC ACTIVITIES
… anoxia. The acid-resistant remains of freshwater algae and cyanobacteria commonly found in palynological macerations remain underutilized, even though their fossil record extends back to the Precambrian. Comparing algal palynomorph assemblages in sediments deposited in two meromictic lakes in …
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Mathematical modelling of the development of cyanobacteria (blue-green algae) in an eutrophical lake, including aspects of toxicology
Cyanobacteria (blue-green algae) are present in most natural water systems throughout the world. They have a tendency, under certain conditions, to become over-buoyant and thus form a water bloom or "surface scum". Often, in conjunc tion with the formation of a water bloom, a release of …
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Interspecies interplay between cyanobacteria and green algae - the first step to know why cyanobacteria produce what we call “Toxins”
… cyanobacterium “Microcystis aeruginosa” and a green alga “Desmodesmus subspicatus” were studied to provide more insights into the ecological importance of the algal secondary metabolites concerning MCs. To achieve this, a dialysis co-cultivation system was established. First, M. aeruginosa PCC …
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BIOINFORMATIC ANALYSIS OF A MAMMALIAN BIP GENE FOR INSERTION INTO GREEN ALGAE AND COMPARISON OF ITS POSSIBLE EFFECTS ON THE SYNTHESIS OF A MAMMALIAN ANTIBODY
… was explored using Chlamydomonas reinhardtii, a green alga, as the recipient of a parent plasmid, pSP124S. Distinctive hypertonic solutions and three separate field strengths were used in the plasmolysis of the cell wall of C. reinhardtii and subsequent electroporation, respectively. The number …
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Study of mutation, mutants, and repair in the blue-green alga Agmenellum quadruplicatum
The study of induced mutation in blue-green algae can be expected to yield significant information in several areas. First, it is desirable to know which mutagens are capable of causing stable mutations in blue-greens. Several mutagens have been reported to cause mutation in blue-green algae; but …
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Trihalomethane formation potential of algal extracellular products and biomass
… was conducted to determine the importance of algae as sources of orgnanic precursors in the haloform reaction. Two species each of green and blue-green algae were grown in laboratory conditions and harvested periodically during their growth cycle. The principal part of the study was directed …
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Autecology, Development and Diagenesis of a Phylloid Stromatolitic Blue Green Algal bioherm, Laborcita formation, Sacramento Mountains, New Mexico
… near Tularosa, New Mexico, is comprised of blue green algal bound phylloid algal wackestones and packstones. It contains a restricted fauna of erect, interlocking phylloid algae encrusted by wavy, digitate, and botryoidal masses of blue green algae and other minor epibionts. Primary void space …
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Trihalomethane-forming potential of algal extracellular products and biomass
… trihalogenated methanes. Two species each of green and blue-green algae were cultured in an inorganic medium and harvested on several days throughout the growth cycle. Media filtrates and cell suspensions were analyzed for total organic carbon and chloroform produced after chlorination. Pure …
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Ammonia uptake by phytoplankton and limnological studies of Mountain Lake, Virginia
… and the community became dominated by blue-green algae. When allochthonous inputs of inorganic nitrogen renewed the levels of ammonia-nitrogen, Vmax values increased and the community changed, replacing the blue-green algae. Communities dominated by green algae (Chlorophyta) had higher MeA …
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Role of the small subunit of Rubisco in the green algal phylogeny and Carbon Concentrating Mechanism expression
… et al., 2001; Field et al., 1998), with green algae a major contributor to this global carbon fixation. However, aquatic environments have some limitations The concentration of CO2 is often 2,200 times lower in water than in air, and diffusion is also 8,000 times slower. In addition, …
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Fluorescence Studies of Photosystem II Fluorescence Quenching During Desiccation
… present study compares the relative ability of green algae and lichens to recover photosynthetic activity after periods of desiccation using steady state fluorescence emission spectroscopy, and picosecond time-resolved fluorescence decay measurements. It was determined that desiccation induced …
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