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APPROXIMATION OF PH/PH/c RETRIAL QUEUE WITH PH-RETRIAL TIME
Asia-Pacific Journal of Operational Research, 2014We consider the PH/PH/c retrial queues with PH-retrial time. Approximation formulae for the distribution of the number of customers in service facility, sojourn time distribution and the mean number of customers in orbit are presented. We provide an approximation for GI/G/c retrial queue with general retrial time by approximating the general ...
YANG WOO SHIN, DUG HEE MOON
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Constant pH simulations of pH responsive polymers
The Journal of Chemical Physics, 2016Polyacidic polymers can change structure over a narrow range of pH in a competition between the hydrophobic effect, which favors a compact state, and electrostatic repulsion, which favors an extended state. Constant pH molecular dynamics computer simulations of poly(methacrylic acid) reveal that there are two types of structural changes, one local and ...
Arjun, Sharma +3 more
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pH measurements in ultranarrow immobilized pH gradients
Journal of Biochemical and Biophysical Methods, 1986It is possible to measure pH values in immobilized pH gradients (IPG) when the polyacrylamide matrix is made to contain an additional, carrier ampholyte-generated pH gradient. After an IPG run, 5 mm gel segments, along the separation axis, are cut and eluted in 300 microliter of 10 mM KCl and the pH read with a standard pH meter. When using ultranarrow
C, Gelfi +3 more
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Formulations for immobilized pH gradients including pH extremes
ELECTROPHORESIS, 1989AbstractFormulations are given both for narrow (<2 pH units) and for wide range (up to 8 pH units) immobilized pH gradients, spanning between pH 2.5 and pH 11. The contribution from water to the buffering power (β) at these pH extremes requires the recipes to be optimized (in terms of gradient linearity) for each desired level of βav.
E. GIANAZZA +4 more
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2015
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