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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 83 for “"laboratory investigation"”.
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Laboratory investigation of the cryosurgical lesion
Cryosurgery denotes the therapeutic ablation of tissues by cold. Its use was first described by Arnott in 1851 for the treatment of carcinoma of the cervix, but never attained clinical prominence due to lack of a simple controlled means of applying cold to tissues. The introduction, 100 years after …
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A laboratory investigation of raindrop oscillations
Knowledge of raindrop shape is crucial to analyses of microwave scattering from precipitation, including the use of polarization radar in inferring the rainfall rate. The equilibrium shape of a water drop falling in air is nearly a sphere for millimetric drops, while larger drops are increasingly …
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Laboratory investigation of insulator contamination problems
… thesis deals with the practical aspect of the laboratory examination of contaminated insulators. A technique which gives a pollution curve for cylindrical insulator models is described. The technique is later extended to apply to practical insulator shapes, giving curves which can be used to …
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A laboratory investigation of stress-induced eating behaviour
… and robust methodological approaches within the laboratory. The current research adopted a psychophysiological approach to the measurement of stress-eating and information processing, using an aggregation of experimental paradigms taken from cardiovascular/stress and dietary restraint …
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Field and Laboratory Investigation of Asphalt Pavement Permeability
… This research aims to perform comprehensive investigations concerning the hot mix asphalt (HMA) pavement permeability as a potential quality indicator of newly constructed roads. According to the conducted research, it is quite evident that considering the permeability along with relative …
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Laboratory investigation of fatigue endurance limits in asphalt concrete
… 200 and 300 με respectively. Furthermore, laboratory fatigue failure criterion is defined as the number of loading cycles at which the stiffness of a material reduces by 50%. This study evaluated stiffness-based failure criteria for laboratory fatigue testing using the viscoelastic …
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A laboratory investigation of load transfer in reinforced soil
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 1992.
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Laboratory investigation of low positive and discrepant HIV serology results
In our diagnostic virology laboratory, we test on average 1500 samples for HIV antibody/antigen each month, of which 0.6% produces problematic results. These problematic samples produce either weakly reactive screening and confirmatory results or, discrepant screening and confirmatory results. Both …
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Laboratory investigation of soil reinforcement using shredded waste plastic bottles
Plastic bottles were first used commercially in 1947 but remained relatively expensive until the early 1960s when high-density polyethylene was introduced, with its attractive characteristics such as being strong, lightweight, durable, cheap, and resistance to breakage. Decomposition of plastic …
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LABORATORY INVESTIGATION OF COAL PERMEABILITY UNDER REPLICATED IN SITU STRESS REGIME
… under uniaxial strain conditions. However, most laboratory studies completed to estimate the changes in coal permeability have used triaxial state of stress, thus violating the underlying principles of the models. An experimental study was, therefore, undertaken to estimate the permeability …
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Laboratory investigation of the important commercial bitumens in use in Massachusetts
Thesis (B.S.)--Massachusetts Institute of Technology, Dept. of Civil Engineering, 1917.
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Laboratory investigation of low-density plasmas by continuous-wave laser scattering.
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Geology and Geophysics, 1968.
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Laboratory Investigation of Shear Behaviour in Rock Joints Under Varying Boundary Conditions
… for numerical geotechnical design, is through laboratory direct shear testing. Direct shear testing is typically conducted using two different boundary conditions: constant normal stress (CNL*) and constant normal stiffness (CNS). The CNL* boundary condition represents fracture behaviour in …
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Laboratory investigation of a method for determining in situ saturated hydraulic conductivity
… if the theory could be successfully applied in a laboratory setting. These experiments were conducted in a large flowchamber which simulates a confined, homogeneous and isotropic aquifer, and which allows for precise control of aquifer pore water velocity. Two techniques were examined. The first …
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Laboratory investigation of diamond grinding and grooving textures on concrete pavement surfaces
… pavement. This study initiates the process of investigation of the parameters and the effectiveness of diamond grinding in a laboratory setting. It was observed that the configuration of diamond grinding adopted is dependent on the type of aggregate as the exposed coarse aggregate polishing is …
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Relationship between decomposition level and induced solidification of peat based on laboratory investigation
Over 60 % of Pontian district is covered by peat. Peat is considered as a poor quality soil for construction due to the high moisture content and low bearing capacity. Solidification of peat is important in this area before any construction work could start thus, will increase the population rate …
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Group size and proximity effects on computer-mediated idea generation: A laboratory investigation.
… a synchronous, computer-mediated environment. A laboratory experiment was employed to manipulate the independent variables group size (4- and 8-member) group member proximity. Group member proximity was manipulated by allowing proximate groups to work in a single meeting room, while members of …
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