@article {2175,
	title = {Gas-phase proton-transfer pathways in protonated histidylglycine},
	journal = {Rapid Communications in Mass Spectrometry},
	volume = {22},
	number = {18},
	year = {2008},
	note = {ISI Document Delivery No.: 355WATimes Cited: 2Cited Reference Count: 23MacDonald, Brandon I. Thachuk, Mark},
	month = {Sep},
	pages = {2946-2954},
	type = {Article},
	abstract = {Pathways for proton transfer in the histidylglycine cation are examined in the gas-phase environment with the goal of understanding the mechanism by which protons may become mobile in proteins with basic amino acid residues. An extensive search of the potential energy surface is performed using density functional theory (DFT) methods. After corrections for zero-point energy are included, it is found that all the lowest energy barriers for proton transfer between the N-terminus and the imidazole ring have heights of only a few kcal/mol, while those between the imidazole ring and the backbone amide oxygen have heights of approximately 15 kcal/mol when the proton is moving from the ring to the backbone and only a few kcal/mol when moving from the backbone to the imidazole ring. In mass spectrometric techniques employing collision-induced dissociation to dissociate protein complex ions or to fragment peptides, these barriers can be overcome, and the protons mobilized. Copyright (C) 2008 John Wiley \& Sons, Ltd.},
	keywords = {COLLISION-INDUCED DISSOCIATION, fragmentation, IONIZATION, MASS-SPECTROMETRY, mobility, MODEL, ORIGIN, PEPTIDE IONS},
	isbn = {0951-4198},
	url = {<Go to ISI>://000259738700023},
	author = {MacDonald, B. I. and Thachuk, M.}
}
@article {5205,
	title = {Surface effects in chromate conversion coatings on 2024-T3 aluminum alloy},
	journal = {Journal of Materials Science},
	volume = {36},
	number = {13},
	year = {2001},
	note = {ISI Document Delivery No.: 443DLTimes Cited: 17Cited Reference Count: 28},
	month = {Jul},
	pages = {3215-3220},
	type = {Article},
	abstract = {Chromate conversion coatings formed on samples of 2024-T3 aluminum alloy, which had been given different pre-treatments, were examined by transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM) and corrosion tests. Two pre-treatments were considered, namely a simple mechanical polish, and polishing followed by an etch in a HF-H2SO4 solution. The latter treatment leads to significant Cu enrichment at the oxide-alloy interface, and this in turn can lead to a deleterious effect on the corrosion protection afforded by a subsequently applied chromate coating. Discussions are given of the behaviour of Cu in the coating formed on the sample that received an acid etch in the pre-treatment. This involves both migration through the coating and a non-uniform redeposition of Cu on to the coating surface. By contrast, the sample that initially was given just the mechanical polish in the pre-treatment does not show a Cu enrichment in the surface region, and the subsequently applied coating appeared stable after a 24 h immersion in a NaCl test solution. (C) 2001 Kluwer Academic Publishers.},
	keywords = {COPPER IONS, CU ALLOY, FILMS, GROWTH, MECHANISM, mobility},
	isbn = {0022-2461},
	url = {<Go to ISI>://000169325100017},
	author = {Sun, X. and Li, R. and Wong, K. C. and Mitchell, K. A. R. and Foster, T.}
}
@article {4099,
	title = {Quantitative description of analyte migration behavior based on the dynamic complexation model in capillary electrophoresis},
	journal = {Canadian Journal of Chemistry-Revue Canadienne De Chimie},
	volume = {75},
	number = {5},
	year = {1997},
	note = {ISI Document Delivery No.: XF492Times Cited: 20Cited Reference Count: 27},
	month = {May},
	pages = {507-517},
	type = {Article},
	abstract = {A theory based on dynamic complexation is used to describe analyte migration behavior in capillary electrophoresis (CE). This theory is based on a one-phase system, instead of the commonly accepted two-phase system. The migration behavior of an analyte is described by three parameters (the electrophoretic mobility of the free analyte, the electrophoretic mobility of the analyte-additive complex, and the equilibrium constant (formation constant) that determines the fractions of the free analyte and the complex at a certain additive concentration). Varying the additive concentration shifts the equilibrium and changes the viscosity of the background electrolyte. Viscosity correction is crucial in interpreting the observed migration behavior of analytes. While electroosmotic flow in a capillary often varies from one capillary to another, the viscosity of a buffer is characteristic of the buffer composition and is constant for each buffer. The electrophoretic mobility of a certain species and the equilibrium constant are intrinsic properties and are less sensitive to changes in the environment. Understanding these relationships is indispensable in CE method development and method validation. A universal resolution equation is proposed, with a separation factor that has taken both the electrophoretic mobilities and equilibria into consideration. This resolution equation gives clear guidance for the optimization of CE separations. A group of nucleosides and their phosphates are used as analytes, and P-cyclodextrin is used as the additive in the model system studied in this paper. Both the observed analyte migration behavior and the resolution of analytes agree well with this theory.},
	keywords = {ACIDS, BETA-CYCLODEXTRIN, BINDING, capacity factor, CHIRAL SEPARATION, CORRECTION, dynamic complexation capillary electrophoresis, ELECTROKINETIC CHROMATOGRAPHY, mobility, nucleoside and, nucleotide separation, RESOLUTION, resolution equation, VISCOSITY},
	isbn = {0008-4042},
	url = {<Go to ISI>://A1997XF49200005},
	author = {Peng, X. J. and Bebault, G. M. and Sacks, S. L. and Chen, D. D. Y.}
}
@article {3703,
	title = {Interfacial thickness of liposomes containing poly(ethylene glycol)-cholesterol from electrophoresis},
	journal = {Biophysical Journal},
	volume = {70},
	number = {1},
	year = {1996},
	note = {ISI Document Delivery No.: TY683Times Cited: 29Cited Reference Count: 33},
	month = {Jan},
	pages = {313-320},
	type = {Article},
	abstract = {The electrophoretic mobilities of liposomes incorporating a polyethylene glycol (PEG) headgroup coupled to cholesterol for PEG of average chain index 3.0, 13.2, and 22.3 have been determined as a function of PEG-cholesterol mole fraction between 5\% and 40\% and ionic strength between 2 and 200 mM. The liposome compositions were 40 mole \% cholesterol plus PEG-cholesterol, 10 mole \% 1,2-dipalmitoyl-sn-glyerco-3-phosphoglycerol and 50 mole \% egg phosphatidylcholine. The mobilities were fit to a model in which the PEG forms a surface layer of polymer subject to viscous drag arising I from electroosmotic flow within this layer. The model provides estimates of the average layer thickness that are comparable to those determined from contemporary models of surface-attached polymer.},
	keywords = {CELLS, CHAINS, grafted polymer brush, mobility, PARTICLES},
	isbn = {0006-3495},
	url = {<Go to ISI>://A1996TY68300026},
	author = {Janzen, J. and Song, X. and Brooks, D. E.}
}
@article {3002,
	title = {IDENTIFICATION OF EXTRACELLULAR ARSENICAL METABOLITES IN THE GROWTH-MEDIUM OF THE MICROORGANISMS APIOTRICHUM-HUMICOLA AND SCOPULARIOPSIS-BREVICAULIS},
	journal = {Applied Organometallic Chemistry},
	volume = {8},
	number = {4},
	year = {1994},
	note = {ISI Document Delivery No.: PD643Times Cited: 34Cited Reference Count: 28},
	month = {Jul},
	pages = {303-311},
	type = {Article},
	abstract = {The separation and identification of some of the arsenic species produced in cells present in the growth medium when the microorganisms Apiotrichum humicola (previously known as Candida humicola) and Scopulariopsis brevicaulis were grown in the presence of arsenicals were achieved by using hydride generation-gas chromatography-atomic absorption spectrometry methodology (HG GC AA). Arsenite, monomethylarsonate, dimethylarsinate and trimethylarsine oxide were detected following incubation with arsenate. With arsenite as a substrate, the metabolites were monomethylarsonate, dimethylarsinate and trimethylarsine oxide; monomethylarsonate afforded dimethylarsinate and trimethylarsine oxide, and dimethylarsinate afforded trimethylarsine oxide. Trimethylarsine was not detected when the arsenic concentration was 1 ppm.},
	keywords = {APIOTRICHUM-HUMICOLA, arsenic, CANDIDA-HUMICOLA, DIMETHYULARSINATE, ENDOCELLULAR, EXTRACELLULAR, GROWTH MEDIUM, HYDRIDE GENERATION GAS CHROMATOGRAPHY ATOMIC ABSORPTION SPECTROMETRY, METHYLARSONATE, METHYLATION, mobility, SCOPULARIOPSIS-BREVICAULIS, TRIMETHYLARSINE, TRIMETHYLARSINE OXIDE},
	isbn = {0268-2605},
	url = {<Go to ISI>://A1994PD64300003},
	author = {Cullen, W. R. and Li, H. and Hewitt, G. and Reimer, K. J. and Zalunardo, N.}
}
@article {2808,
	title = {WATER PENETRATION IN NYLON-6,6 - ABSORPTION, DESORPTION, AND EXCHANGE STUDIED BY NMR MICROSCOPY},
	journal = {Journal of Polymer Science Part a-Polymer Chemistry},
	volume = {31},
	number = {1},
	year = {1993},
	note = {ISI Document Delivery No.: KB969Times Cited: 22Cited Reference Count: 17},
	month = {Jan},
	pages = {159-168},
	type = {Article},
	abstract = {The uptake of water by nylon 6,6 [42DB Adipure (trade name of Dupont Canada Inc.)] at 100-degrees-C has been monitored by a combination of one-dimensional proton NMR spectroscopy, relaxation time (T1 and T2) measurements and proton microscopic NMR imaging techniques. The relaxation times of the water absorbed into the nylon matrix are very short at room temperature, (T2 < 1 ms and T1 almost-equal-to 1 s) indicating that the water is located in a highly restricted environment and suggesting that strong interactions exist between the absorbed water and the polymer. The diffusion profiles measured at room temperature indicate that the diffusion of water into nylon 6,6 at 100-degrees-C is Case I Fickian diffusion. The spatial dependence of the T2 relaxation time constant and its variation with the water content was also examined. The results reveal that both T2 and T2* decrease toward the center of the sample in samples that have a concentration gradient of sorbed water. In fully saturated samples, no spatial dependence was observed. The overall values of T2 and T2* are also observed to increase as a function of exposure time. An evaluation of the desorption process at room temperature and at 100-degrees-C was performed. A continuous, exponentially decreasing solvent profile was observed for the desorption process which again indicates Case I Fickian kinetics. The exchange process of external bulk and atmospheric water with deuterium oxide (D2O) saturated nylon rods has also been studied using the microscopic imaging technique.},
	keywords = {6, mobility, NMR MICROSCOPY, NUCLEAR MAGNETIC-RESONANCE, NYLON-6, WATER ABSORPTION},
	isbn = {0887-624X},
	url = {<Go to ISI>://A1993KB96900019},
	author = {Fyfe, C. A. and Randall, L. H. and Burlinson, N. E.}
}
@article {7241,
	title = {OBSERVATION OF HETEROGENEOUS TRACE (0.4-PERCENT W/W) WATER-UPTAKE IN BISPHENOL A POLYCARBONATE BY NMR IMAGING},
	journal = {Chemistry of Materials},
	volume = {4},
	number = {2},
	year = {1992},
	note = {ISI Document Delivery No.: HL702Times Cited: 6Cited Reference Count: 17},
	month = {Mar-Apr},
	pages = {267-271},
	type = {Article},
	abstract = {The uptake of water by injection-molded bars of bisphenol A polycarbonate (Lexan 121 resin) has been monitored by a combination of one-dimensional proton NMR spectroscopy, relaxation time (T1 and T2) measurements, and microscopic imaging techniques. The bulk of the water absorbed in the initial stages (20-24 h) of 100-degrees-C water exposure is uniformly distributed throughout the polymer with a trace amount of the water found in clusters of 200-300-mu-m in size. The water that has aggregated to form these clusters is more mobile, having a T2 relaxation time 20 times longer than that found for the uniformly distributed water. At longer exposure times (30-40 days) the number of clusters is observed to increase. Although the total amount of water adsorbed is considerably less than 1 \% w/w, good-quality images are obtained, demonstrating that the NMR microimaging technique can successfully monitor even trace levels of solvent if the molecules are relatively mobile.},
	keywords = {DIFFUSION, mobility, NUCLEAR MAGNETIC-RESONANCE, POLYMERS},
	isbn = {0897-4756},
	url = {<Go to ISI>://A1992HL70200010},
	author = {Fyfe, C. A. and Randall, L. H. and Burlinson, N. E.}
}
