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 3063 for “"column"”.
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Optimum column stiffening
Thesis (M.S.) Massachusetts Institute of Technology. Dept. of Civil and Sanitary Engineering, 1950.
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Stair Column Tower
This set of drawings, paintings, and photographs explores the realms of knowledge and experience in architecture through analytical and perceptual means. In other words, how physical, material considerations inform the experience of moving through space, the perception of space, and the memory of …
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Behaviour of unstiffened column webs in bolted beam-to-column connections in building frames
… was to develop a design philosophy to predict column web failure moments based on a series of full scale tests (flush and extend end plates) carried out at the University of Abertay Dundee.<br/>Buckling of the column web was observed in a large number of the bolted beam-to-column connections …
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Simulation of packed column jigging
Packed column jig has been demonstrated a number of promising results in processing iron ore, coal, chromite and other finely disseminated particulate materials. The packing materials in the jig divide the column into a large number of virtual cells. Each cell performs the similar separation …
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Dynamics of 1d granular column
… study of the dynamics of a one- dimensional column of inelastic spheres that it subjected to taps by prescribing a half sine wave pulse to supporting floor. Contact interactions obey the Walton-Braun soft-sphere model in which the loading (unloading) path is governing by linear springs of …
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Seperations by continuous column crystallisation
A continuous column crystalliser has been designed and built using a Schildknecht-type Archimedean transportation screw within a stainless steel jacket. Problems concerned with the surface finish on the inner walls of the jacket which affect crystal transportation have been investigated, leading to …
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Synthesis of ion microbeam column.
… Szep have demonstrated that an axially symmetric column of circular plates, with the electrode potentials optimized for focusing, can surpass the typical conventional designs by many times in performance. Following the footsteps of pioneers like Burfoot and Hawkes, we partition the plates in order …
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SIMD column-parallel polygon rendering
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1995.
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Scale-up of column flotation
The parameters controlling column flotation have been investigated using laboratory and pilot-scale flotation cells. It was determined that column recovery is a function of flotation rate constant, axial dispersion, retention time and fractional air hold-up within the cell. Mathematical expressions …
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Optimal Row-Column Designs for Correlated Errors and Nested Row-Column Designs for Uncorrelated Errors
… the design problems are considered in the row-column setting for second order autonormal errors when the treatment effects are estimated by generalized least squares, and in the nested row-column setting for uncorrelated errors when the treatment effects are estimated by ordinary least squares. …
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The determination of HETP and column efficiency for an annular preparative-scale gas-liquid chromatographic column
… to design, build, and test a preparative-scale column which contained a blocked-off center tube, thus forming an annular space for the packing. The chromatographic system for this study consisted of 1-methylnaphthalene injections with helium carrier gas and a liquid phase of Craig polyester …
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Adiabatic Packed Column Supercritical Fluid Chromatography
… the fluid does not match the temperature of the column surroundings, a radial temperature gradient forms due to heat transfer between the column and the thermal environment surrounding the column. This radial temperature gradient causes a radial fluid density profile inside the column and radial …
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Theories of the uniform public column
… electric field commonly found in positive columns is discussed in relation to the "quasi-neutral" state of the plasma.
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Design of paired column semisubmersible hull
There is a constant effort to reconfigure column stabilized semisubmersible unit to meet the challenging demands associated with deep water exploration. Paired column semisubmersible platform is one of the recent column stabilized semisubmersible hull configured to allow top-deck well head …
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Evolution of the Hominoid Vertebral Column
… of the numerical composition of the vertebral column, the central structure of the vertebrate body plan and one that plays an instrumental role in locomotion and posture. Recent models of hominoid vertebral evolution invoke very different roles for homology and homoplasy in the evolution of …
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Mass transfer in bubble column contractors
… volumetric mass transfer coefficients in bubble column contactors have been investigated for water and aqueous electrolyte solutions. Two methods were used to obtain experimental data on volumetric mass transfer coefficients: the steady state oxidation technique and a transient method. The former …
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Reproducibility of Retention Indices Examining Column Type
… sources for the same compound on the same column. This is not unexpected, but does indicate the need for determination of a realistic range (i.e., uncertainty) that should accompany any reported retention index. In the case of similar compounds, this is not just desirable, it is essential. …
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