Subject polyethylene glycol

Every peak was uniform with respect to m, but each one had a distribution in block length with respect to the PEO blocks (n). To identify fractions, they were collected and subjected to mass spectrometry. The first fraction contained polyethylene glycol and block oligomers with a degree of polymerization m(PO) 1-3. The second fraction was homogeneous with respect to PO and contained m(PO) 4, while fraction 3 resulted from m(PO) = 5. 

Liquid samples with low protein concentrations or large amounts of salt should be desalted and concentrated prior to 2-DE. Desalination can be achieved by dialysis or liquid chromatography. The desalted sample is then lyophilized, subject to dialysis against polyethylene glycol or precipitated with acetone to remove interfering compounds. 

In addition, a polymer-supported version of the intramolecular aglycon delivery was explored [148]. In this system, mannosyl thioglycoside 93 bound to polyethylene glycol (PEG) via a p-alkoxybenzyl linker was subjected to the two-step sequence and the resultant fi-manno-glycoside is specifically released into the non-polymeric phase, while most of the by-products remain bound to the polymer. 

K. A. Nieforth, R. Nadeau, I. H. Patel, and D. Mould, Use of an indirect pharmacodynamic stimulation model of MX protein induction to compare in vivo activity of interferon alfa-2a and a polyethylene glycol-modified derivative in healthy subjects. Clin Pharmacol Ther 59(6) 636-646 (1996). 

In a dehydrated state, the frequency corresponding to the PO2 group asymmetric mode of vibration is 1237 run. Upon full hydration (18 to 20 water molecules per lipid) the frequency decreases to 1211 nm because of the formation of hydrogen bonds with the water molecules. When fully hydrated lipids are subjected to a hypertonic shock by the addition of polyethylene glycol (PEG), the frequency increases in 6 nm, indicating a small but significant water displacement from the phosphate regions. 

As an alternative to the conventional polyethylene glycol (PEG) treatment of waterlogged wood see Chapter 8), attempts were made in 1966-1967 to apply a radiation-curing process (i, 2). The aim was to reduce treatment time and achieve more stability for treated objects subjected to interior climatic changes. The impregnation of waterlogged wood by immersion involves a liquid-liquid exchange process. Dry wood was directly bulked by monomers by a vacuum-pressure process. 

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