- About
-
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 4050 (0.085 seconds)| 381 |
Gas chromatographic studies of soil-hydrocarbon physical interactions and soil absorption of atmospheric nitrous oxidePrososki, Gale Kathleen January 1978 (has links)
No description available.
|
| 382 |
The effect of interfacial energetics on the adsorption of polydimethylsiloxane at the liquid/silica interface /Brebner, K. I. January 1976 (has links)
No description available.
|
| 383 |
Nonlinear optical spectroscopic studies of polymer surface properties and competition adsorption of toluene and heptane on silica surfacesHua, Rui 11 1900 (has links)
Surface properties of polymers and competition adsorption of toluene and heptane
on silica were studied using IR-visible sum frequency generation (SFG) vibrational
spectroscopy. SFG is intrinsically surface sensitive because the second-order optical
process is forbidden in media with inversion symmetry, such as bulk polymers and
liquids. This nonlinear optical technique provides surface vibrational spectra under
ambient conditions without the need of an ultra-high vacuum environment. Polymer
surface properties, including surface relaxation temperature of poly(methyl methacrylate)
(PMMA) and surface electronic states of poly[2-methoxy, 5-ethyl (2’-hexyloxy) para
phenylenevinylene] (MEH-PPV), were investigated. It was found that there are
significant differences between the surface and bulk properties for these polymers. For
PMMA, a new surface structure relaxation was identified at 67°C, which does not match
any known structure relaxation temperatures for bulk PMMA and is 40°C below the bulk
glass transition temperature. For MEH-PPV, SFG electronic spectra, which were
obtained by scanning the frequencies of incident visible and JR beams, indicated that the
electronic states at the polymer/solid and air/polymer interfaces are red-shifted with
respect to that of the bulk. Finally, SFG was employed to study the competition
adsorption of toluene and heptane on silica surfaces. Experimental data showed that
heptane adsorbed favorably compared to toluene. Using a Langmuir adsorption isotherm,
the changes of Gibbs free energy for the adsorption processes were calculated to be —12.1
± 1.8 (kJ/mol) for toluene and —16.5 ± 2.3 (kJ/mol) for heptane.
|
| 384 |
Absorption of sulfur dioxide by charged aqueous dropletsDavis, Joel 05 1900 (has links)
No description available.
|
| 385 |
The thermodynamics of adsorption hysteresis in the system krypton on controlled pore glassTallent, Mark Alfred 05 1900 (has links)
No description available.
|
| 386 |
The collection of aerosol particles by charged water dropletsLewis, Lonzy 12 1900 (has links)
No description available.
|
| 387 |
Advances in molecular sieves and their applications in adsorptive gas separation processesLin, Christopher C. H. Unknown Date
No description available.
|
| 388 |
The sorption of textile dyes by activated carbon.Smith, Chadwick Perrin January 1971 (has links)
No description available.
|
| 389 |
The sorption of cationic dyes by polyester fibers.Kelley, Larry Clifford January 1972 (has links)
No description available.
|
| 390 |
Adsorption on activated carbon of hydrogen, methane and carbon dioxide gases and their mixtures at 212 K to 301 K and up to thirty-five atmospheres.Rogers, Kenneth Alfred 05 1900 (has links)
No description available.
|
Page generated in 0.0916 seconds