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 944 for “"fixation"”.
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Potassium Fixation by Clays
Made available in DSpace on 2014-12-12T00:17:50Z (GMT). No. of bitstreams: 1 7219854.pdf: 5141869 bytes, checksum: 32791078da76d3255a99ab1c31dc2a0b (MD5) Previous issue date: 1972
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Small eye movements during fixation : the case of postsaccadic fixation and preparatory influences
… as an alternating sequence of saccades and fixations turns out to be an oversimplification because the eyes continue to move during fixation. Small-amplitude saccades (e.g., microsaccades) are typically observed 1-2 times per second during fixation. Research on microsaccades came in two …
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Photoactivated Fixation of Cartilage Tissue
… transport, molecular deposition to enhance fixation, and eventual stress transmission across the interface. It has been postulated that effective transport and crosslinking of newly synthesized collagen molecules across a repair site may be vital to the process of integrative repair, and …
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The fixation of arsenic wastes
Arsenic has found widespread use as a component in a variety of formulations designed to control or eliminate a variety of insect and fungicidal pests. Arsenical wastes are also often produced during the extraction of metals such as copper, gold, nickel and tin. Consequently, there are large …
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Studies on biological nitrogen fixation.
Thesis: Ph. D., Massachusetts Institute of Technology, Department of Chemistry, 1991
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Carbon Dioxide Fixation in Schistosoma Mansoni
<p>Adults of the blood fluke <em>Schistosoma mansoni</em> were perfused from the hepatic portal system of CF1 female mice sixty to seventy days post infection. The worms were then incubated in Eagle’s minimal essential medium with glutamate and 0.03 mg/100 ml of nonlabelled aspartic acid. To this …
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Boron Sorption and Fixation by Illites
Made available in DSpace on 2014-12-09T20:34:27Z (GMT). No. of bitstreams: 1 6801732.pdf: 3176922 bytes, checksum: 86df4ba5889fde03baf37a532a56b8e8 (MD5) Previous issue date: 1967
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Improving gas fixation in acetogenic bacteria
… these gases are released. Yet biological gas fixation has many limitations that currently prevent practical implementation. This includes biological limitations such as slow growth rates, and low biomass and product titers. Process limitations are also a concern, as full conversion is …
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Mechanistic models of oceanic nitrogen fixation
Oceanic nitrogen fixation and biogeochemical interactions between the nitrogen, phosphorus and iron cycles have important implications for the control of primary production and carbon storage in the ocean. The biological process of nitrogen fixation is thought to be particularly important where the …
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Screw fixation of implants to the spine
… fix various implants to the human spine. Screw fixation can be difficult in osteoporotic bone because of its reduced strength. This research aimed to investigate screw fixation techniques in the spine. A questionnaire study, representing British and Irish spine surgeons, confirmed the potential …
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Posterior segmental spinal fixation in Scoliosis surgery
Spinal deformity was recognised in the ancient works for philosophy, religion, myths, and fairy tales dating back as far as 3500BC[1,6]. Scoliosis was first described in the 5th century BC by Hippocrates. He recommended treatment with axial distraction on an extension apparatus (figure 1).
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Enhancing CO₂ fixation by synergistic substrate cofeeding
… has prompted the development of scalable carbon fixation technologies in recent years. To this end, biological non-photosynthetic methods serve as promising leads since they not only sequester CO₂, but also convert it into a variety of value-added fuels, chemicals, and pharmaceuticals with high …
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Multiresolution fixation of a binocular vision system
Binocular camera fixation refers to the control of camera movements so that the optical axes of two cameras converge at a single point of interest in a three-dimensional scene. This thesis describes the theory and high-level algorithms for a procedure that can locate fixation points in an image …
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Nitrogen Fixation By Azotobacter Species In Mixed Culture
… that ammonia, the natural endproduct of nitrogen fixation, acts as a corepressor of nitrogenase synthesis. It has also been shown that ammonia will accumulate in the medium of pure cultures of Azotobacter vinelandii until levels become high enough to repress nitrogenase synthesis. A. vinelandii …
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Carbon Dioxide Uptake and Fixation by Bovine Spermatozoa
Made available in DSpace on 2014-12-12T00:36:22Z (GMT). No. of bitstreams: 1 7114835.pdf: 4911426 bytes, checksum: 42a27b14b3b41857cc7648c09dd04b25 (MD5) Previous issue date: 1970
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