- About
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The Global ETD Search service is a free service for researchers
to find electronic theses and dissertations. This service is
provided by the
Networked Digital Library of Theses and Dissertations.
Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
Search results
Showing 381 to 390 of 3112 (0.043 seconds)| 381 |
Energy and angular distributions of ions induced by electron stimulated desorption from surfacesGreenwood, Claire-Louise January 1993 (has links)
No description available.
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| 382 |
An investigation of the optical profile properties (smoothness) of paper substrates including the effects on smoothness of solvent penetratation and with particular reference to lithographicHansuebsai, A. January 1989 (has links)
No description available.
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| 383 |
Potentials for calcium and strontium and their application to solids and clustersHearn, Jason Elyot January 1996 (has links)
No description available.
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| 384 |
Effects of surface roughness on the boundary-layer characteristics of turbine aerofoilsWatt, Robert McFarlane January 1988 (has links)
No description available.
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| 385 |
The effect of ridged roughness on momentum transferHusain, C. N. January 1988 (has links)
No description available.
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| 386 |
Simulation of depth resolution limitations in SIMS depth profilingBadheka, Ranjan January 1994 (has links)
No description available.
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| 387 |
Some factors affecting bacterial adhesion to polymer monofilamentsBilbruck, John January 1991 (has links)
No description available.
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| 388 |
Formation of biofilms on stainless steel by Pseudomonas fluorescens and Listeria monocytogenesVatanyoopaisarn, Savitri January 2000 (has links)
No description available.
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| 389 |
Some of the physical factors involved in the deposition of wood smoke on surfaces with ultimate reference to the process of smoke curingFoster, William Warwick January 1957 (has links)
No description available.
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| 390 |
The effects of various chemical treatments on the surface area of coalsLudvig, Maria Margaret 01 January 1983 (has links)
Surface areas of most American coals are small when measured by N2 adsorption at 77 K and large when measured by CO2 adsorption at 298 K, implying that the majority of the pores are less than 5 Å in diameter. This small pore size would restrict many gaseous and liquid reactants from entering the internal pore system of the coal, and hence, reduces the efficiency of coal conversion. Therefore, if the surface area, as measured by N2 (77 K), could be increased, that is, to increase the pore size, the conversion of coal into useful products should be accomplished more efficiently.
Determining the surface properties of coal during treatment is important if one wishes to maximize any future process. Therefore, this research project is undertaken to gain knowledge of the surface properties (in particular the surface area) of coals undergoing treatment with various gaseous and liquid reactants. In particular, the effects of heat treatment in a stream of N2 up to 600oC and of oxidation in a stream of O2:N2 (5%:95%) at various temperatures between 350° and 450°C are studied with three coals of various ranks. The effect of pyridine extraction, at room temperature, before heat and oxidation treatments are examined for two of the coals, in addition to treatment with chromyl chloride at l00°C. Finally, the effects of hydrogen and oxygen atoms on the surface area of the coals are also investigated.
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