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 221 for “"Nodules"”.
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Carbon partitioning in nitrogen-fixing root nodules
Stickstoff-fixierende Wurzelnknöllchen repräsentieren starke Kohlenstoff- sinks". Die Zucker- verteilung wurde in verschiedenen symbiotischen Systemen untersucht, nämlich in einer Leguminose, Medicago truncatula, und zweier Aktinorhizapflanzen, Casuarina glauca und Datisca glomerata. Die …
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Chert Nodules in Carbonate Rocks of Illinois
Made available in DSpace on 2014-12-04T19:13:36Z (GMT). No. of bitstreams: 1 0025194.pdf: 3940680 bytes, checksum: 1b309db6cf4ec8d5efa889ca7fd22998 (MD5) Previous issue date: 1957
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Acoustic scattering analysis for remote sensing of manganese nodules
… signature of the Pacific where manganese nodules are present. Preliminary experimental data for the compressional and shear wave speeds in nodule material is given. This data was used in the scattering computations. Limiting cases of Rayleigh scattering and scattering from fixed rigid and …
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Predicting risk of malignancy in patients with indeterminate thyroid nodules
… cancer (1). The prevalence of palpable thyroid nodules in the general adult population is 4% to 7% (2). Ultrasound imaging detects thyroid nodules in 19%-68% of randomly selected individuals (3). The rate of thyroid cancer in nodules found on US is 4% to 15% (4). In order to evaluate thyroid …
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Metabolism of Nodules and Bacteroids of Soybean (Glycine Max L.)
Made available in DSpace on 2014-12-14T14:37:28Z (GMT). No. of bitstreams: 1 7913622.pdf: 3608988 bytes, checksum: 025671bfbf1d063590d28bcb024c619b (MD5) Previous issue date: 1978
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A porous elastic model for acoustic scatter from manganese nodules
… are derived, using the parameters for manganese nodules. A modal analysis with a pressure boundary condition indicates that the first kind of compressional wave is lightly attenuated and carries most of the energy of the coupled system. The second compressional wave is highly attenuated and …
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Detection and description of pulmonary nodules through 2D and 3D clustering
… description and classification of pulmonary nodules offer the potential for early diagnosis of cancer and greater efficiency in the reading of computerised tomography (CT) images. CT scan centres are currently experiencing high loads and experts shortage, especially in developing countries …
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Concretions and nodules in the Hell Creek Formation, southwestern North Dakota
… deposits and contains abundant concretions and nodules. Representative specimens of the concretions and nodules and their corresponding enclosing sediments were analyzed by thin section and by quantitative and qualitative x-ray diffraction methods. </p><p> Fourteen types of concretions and three …
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Voice source modeling and analysis of speakers with vocal-fold nodules
Thesis (Ph. D.)--Massachusetts Institute of Technology, Whitaker College of Health Sciences and Technology, 1998.
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Towards Fully Automated Volumetric Analysis of Lung Nodules in Computed Tomography
… outcomes, and tracking the growth of lung nodules over time is key to understanding their progression and informing future treatment decisions. However, calculating nodule growth in computed tomography (CT) scans remains a highly manual and time-consuming task. In this work, we develop an …
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Rare metal resources in polymetallic nodules from the Eastern Equatorial Pacific Ocean
… in terms of metal resources in polymetallic nodules. The nodules are enriched (relative to crustal composition) in economically important metals such as Mn, Ni, Cu, Zn, and so-called critical metals such as Co, Rare Earth Elements and Y (REYs). This project involves the geochemical and …
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Pseudomonas spp. Isolated from Soybean Nodules Promote Soybean Growth and Nitrogen Fixation
Nitrogen-fixing bacteria in soybean nodules convert atmospheric nitrogen to plant-available forms in exchange for carbon from the plant, but other non-nitrogen-fixing bacteria also reside in nodules, and their role in the nodule is not well understood. This study was conducted to determine the …
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Optimizing acoustic and perceptual assessment of voice quality in children with vocal nodules
… salient in characterizing the impact of vocal nodules on vocal function in children. Hence, a pediatric assessment protocol was developed based on the standardized Consensus Auditory Perceptual Evaluation of Voice (CAPE-V) used to evaluate adult voices. Adult and pediatric versions of the …
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Continuous living cover for the Upper Midwest: from hairy vetch nodules to the lanscape scale
The work in this dissertation illustrates challenges and opportunities related to implementing continuous living cover across the Midwestern U.S. Chapter 1 and Chapter 2 exemplify the challenges specific to one crop, hairy vetch. Temperature constraints in the region limit the utility of hairy …
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