For the r-stage open shop problem with identical parallel machines at each stage and the minimum makespan criterion, an approximation scheme is constructed with running time O(nrm+C(m,ε)), where n is the number of jobs, m is the total number of machines, and C(m,ε) is a function independent of n.
Assuming that the Generalized Riemann Hypothesis (GRH) holds, we prove an explicit formula for the number of representations of an integer as a sum of k5k5 primes. Our error terms Cheap Ghd Straighteners Uk Free Delivery in such a formula improve by some logarithmic factors an analogous result by Friedlander and Goldston (1997) .
A steam power plant thermodynamic model developed using the ASPEN Plus shell is presented. The model is validated using field data from two Cheap Babyliss Pro Curl
units, one with a capacity of 105 MWe and the other 150 MWe. The model is then modified and used to evaluate the thermodynamic feasibility of servicing a small (less than 20 MWt) thermal load in addition to generating electricity.
The effect of salt stress on ethanol endurance of yeast cells was studied. Cells grown under increased NaCl concentrations were more ethanol tolerant than controls. The increase in trehalose content under hyper-saline conditions has been suggested to allow cells to withstand higher ethanolic conditions. There seems to be an overlap between osmotolerance and ethanol endurance in Saccharomyces cerevisiae.