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 1762 for “"surface area"”.
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Total Surface Area in Indoor Environments
… reactions, involve interactions with surfaces. To accurately describe the surface-area-to-volume ratio in a room, we have characterized the surface area, volume, shape, and material of objects in five bedrooms, four kitchens, and three offices. Averaged over all types of rooms, the …
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Automatic 3D surface area measurement for vitiligo lesions
… stress. Monitoring changes in vitiligo lesion area allows assessment of treatment efficacy and aids in clinical decision making. Currently existing approaches for vitiligo lesion measurement are either inefficient or inaccurate. Using a RGB-D camera (Kinect) and imaging processing techniques, …
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Nanostructured Porous High Surface Area Ceramics for Catalytic Applications
… preparation of mesoporous silicon carbide with surface areas between 410 and 830 m2g-1 and high mesopore volume (up to 0.9 cm3g-1). The pore size (between 3 and 7nm in diameter) and surface area of mesoporous silicon carbide were controlled by adjusting the infiltration conditions (time, …
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Evaluating Surface Area-Basin Volume Relationships for Prairie Potholes
Establishing a relationship between surface area and volume of prairie potholes provides a simple method to estimate changes in water storage across the landscape. Applications include better prediction of floods and improved design for wetland restoration. Length, width, depth, surface area, and …
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Determination of Permeability-Surface Area Products of Gd-DTPA
Made available in DSpace on 2017-07-06T18:42:19Z (GMT). No. of bitstreams: 3 Aref_Michael_MS.pdf: 58694735 bytes, checksum: 7b0bb548ccf3a4e45e62ada79ee2f697 (MD5) Aref_Michael_MS_ABS.pdf: 1521834 bytes, checksum: 9a7804fb65d1ffcb0ef87637bd728ea8 (MD5) license.txt: 4813 bytes, checksum: …
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Root Surface Area Related to Anchorage in the Begg Technique
… primarily because of the difference in root surface area of the various teeth; the greater the surface area, the greater the force required to initiate movement.</p> <p>The purposes of this study were to conduct a more thorough investigation of actual root surface area of anterior teeth, and …
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SURFACE AREA AS A METHOD FOR THE DETERMINATION OF GLOVE DEGRADATION
… to gravimetric analysis. This method uses surface area change as a way to determine the degradation of a polymer material. The percent change data were compared between the weight change and the surface area change. The regression line given was Y=0.4841x + 0.0187 and the R<sup>2</sup> …
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Fabrication and characterization of high surface area nickel-deposited graphite substrates
… is obtainable given a high cathode to anode surface area ratio; however, commercially available metal foams often do not provide sufficient surface area density (cm 2/g). Coating high-surface area materials in the appropriate metal is a premier alternative, but while methods to effectively …
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Impact of stability and surface area on fracture toughness of biological structures
Nature is the master of creating material systems with a remarkable combination of properties. Biosystems are tough, strong, resilient, fast and efficient. Bioinspired system design is an emerging framework in structural engineering for the realization of engineered structures that are tough, …
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An analysis of surface area estimates of binary volumes under three tilings
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1997.
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The development and characterization of tailored, high surface area adsorbents for enhanced adsorption
… (fast adsorption/desorption kinetics), high surface area, narrow micropore size distribution, and ease for in-situ reactivation. Despite these advantages, the ACFs were precluded to use in niche markets because of their high cost $(>\$100$/lb.) and their poor wear properties. This thesis …
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Striking Implement and Surface Area Specification in Unaccompanied Multiple Percussion Solos: Its Compositional Significance
… with regard to striking implements and surface areas contribute to the structure of selected multiple percussion solos. Striking implements are defined as objects or parts of the human hand which make percussive contact with an instrumental surface. Surface areas are regions of …
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Impact of surface area and porosity on the cooling performance of evaporative cooling devices
… storage of fruits and vegetables on farmlands. Surface area and porosity are two design parameters that affect the cooling devices' evaporation rate and cooling performance. Both design parameters lack prior systematic testing that methodically varies levels of surface area and material porosity …
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New Approaches to the Synthesis of Porous and/or High Surface Area Transition Metal Oxides
… to the synthesis of porous and/or high surface area transition metal oxides. In addition, applicability and advantage of charged templates where strong Coulomb interactions favour the supramolecular arrangements/assembly were studied. The problems related with the dynamics of polymeric …
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The Synthesis Of High Surface Area Ti Sponges By Halide Conversion Process For Capacitor Anodes
… to grow oxide films over the entire sponge surface and evaluated by measuring the capacitance and leakage current. The anodized Ti sponge samples, with their oxide films of high dielectric constant, can provide high surface to volume ratio to obtain energy density as high as 1J per gram of …
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The Effect of Particle Surface Area to Volume Ratio on Ion Release from CoCr Spheres
… and the rate of ion production from the high surface energy wear debris released by implant articulation can assist in illustrating the relative clinical significance of exposure to these metallic bodies over time. This thesis primarily focuses on developing a test methodology for the …
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Multi-objective topology optimization for trabecular bone-like structure: role of stability and surface area
… under the competing requirements of compliance, surface area, and buckling stability. We use a classical rectangular plate model with uniform external load to demonstrate that the complexity of the resulting structure is driven by the optimization criteria rather than a specific domain geometry …
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Surface Area Mapping and Rinse Procedures of Raw Produce to Determine Effectiveness of Pathogen Removal
Bacterial pathogens on the surfaces of raw produce may be difficult to remove for identification and enumeration. The first part of this project examined whether ultrasonic treatment (40 kHz) of a rinse solution would enhance recovery of Salmonella spp. from various produce surfaces. Strawberries, …
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Analysis of changes in the surface area of the reservoirs supplying the Attica Basin using satellite images
Στην παρούσα διπλωματική εργασία γίνεται έρευνα για τις μεταβολές της έκτασης των λιμνών που τροφοδοτούν την περιφέρεια της Αττικής (Μαραθώνας, Υλίκη, Μόρνος, Εύηνος), όπου με δημοσιεύματα από τα μέσα μαζικής ενημέρωσης τα τελευταία χρόνια τα αποθέματα πόσιμου νερού συνέχεια μειώνονται. Η έρευνα …
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