950 resultados para Binary functionalization


Relevância:

20.00% 20.00%

Publicador:

Resumo:

Bibliography: p. 26.

Relevância:

20.00% 20.00%

Publicador:

Resumo:

"UILU-ENG 84 1703"--Cover.

Relevância:

20.00% 20.00%

Publicador:

Resumo:

"Supported by Contract AT (11-1)-1018 with the U.S. Atomic Engery Commission."

Relevância:

20.00% 20.00%

Publicador:

Resumo:

Thesis (M.S.)--University of Illinois at Urbana-Champaign.

Relevância:

20.00% 20.00%

Publicador:

Resumo:

Includes bibliographical references (leaves 132-134).

Relevância:

20.00% 20.00%

Publicador:

Resumo:

Includes bibliographical references.

Relevância:

20.00% 20.00%

Publicador:

Resumo:

"Materials Laboratory, Contract No. AF33(616)-5771, Project No. 7021."

Relevância:

20.00% 20.00%

Publicador:

Resumo:

"Prepared under the sponsorship of Rome Air Development Center, Air Research and Development Command, United States Air Force, Griffiss Air Force Base, New York, Advanced Development Laboratory. Contract no. AF 30 (602)-1702, project no. 4519, task no. 45232."

Relevância:

20.00% 20.00%

Publicador:

Resumo:

"Materials Central, Contract no. 33(616)-5995. Project no. 7351.

Relevância:

20.00% 20.00%

Publicador:

Resumo:

Adsorption of p-cresol, nitrobenzene and p-nitrophenol on treated and untreated carbons is investigated systematically. The effects of carbon surface chemistry and solution pH are studied and discussed. All adsorption experiments were carried out in pH-controlled solutions to examine the adsorption properties of the adsorption systems where the solutes are in molecular as well as ionic forms. Using the homogeneous Langmuir equation, the single solute parameters are determined. These parameters are then used to predict the binary solute adsorption isotherms and gain further insights into the adsorption process. (C) 2002 Elsevier Science Ltd. All rights reserved.

Relevância:

20.00% 20.00%

Publicador:

Resumo:

High-quality nanometer thick ultramicroporous membranes were prepared from silica sol-gel processes and tested for the permeation of binary gas mixtures of He, H-2, CO2, and CH4 across different temperature and partial pressure regimens. Pore size distribution by molecular probing showed that the majority of pore sizes had dimensions below 2.9 Angstrom. In 50:50 binary mixtures, the fluxes of gases increased as a function of temperature, indicating an activated transport mechanism. The ultramicroporous membranes showed high selectivities at 150 degreesC for He/CO2 (30), He/CH4 (93), H-2/CO2 (10), and H-2/CH4 (9) with lower selectivities for CO2/CH4 (5). High activation energies (E-a) were observed for the permeance of 50:50 binary mixtures containing He and H-2 of 22.1-27.5 and 17.6-23.1 kJ.mol(-1), respectively. The E-a for the permeance of the total mixture approached the E-a for the permeance of the molecule with the smaller kinetic diameter (He or H-2).

Relevância:

20.00% 20.00%

Publicador:

Resumo:

The use of a fully parametric Bayesian method for analysing single patient trials based on the notion of treatment 'preference' is described. This Bayesian hierarchical modelling approach allows for full parameter uncertainty, use of prior information and the modelling of individual and patient sub-group structures. It provides updated probabilistic results for individual patients, and groups of patients with the same medical condition, as they are sequentially enrolled into individualized trials using the same medication alternatives. Two clinically interpretable criteria for determining a patient's response are detailed and illustrated using data from a previously published paper under two different prior information scenarios. Copyright (C) 2005 John Wiley & Sons, Ltd.

Relevância:

20.00% 20.00%

Publicador:

Resumo:

Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) melt processed disks and solvent cast films were modified by graft co-polyinerization with acrylic acid (AAc) in methanol solution at ambient temperature using gamma irradiation (dose rate of 4.5 kGy/h). To assess the presence of carboxylic acid groups on the surface, reaction with pentafluorophenol was performed prior to X-ray photoelectron spectroscopy analysis. The grafting yield for all samples increased with monomer concentration (2-15%), and for the solvent cast films, it also increased with dose (2-9 kGy). However, the grafting yield of the melt processed disks was largely independent of the radiation dose (2-8 kGy). Toluidine blue was used to stain the modified materials facilitating, visual information about the extent of carboxylic acid functionalization and depth penetration of the grafted copolymer. Covalent linking of glucosamine to the functionalized surface was achieved using carbodimide chemistry verifying that the modified substrates are suitable for biomolecule attachment.