in this paper, a new combined power and refrigeration cycle is proposed, which combines the rankin power cycle and the ejector refrigeration cycle. this combined cycle produces both power output and refrigeration output simultaneously. this cycle is driven by the flue gas of gas turbines, industrial waste heats, solar energy and geothermal energy. an exergy analysis is performed to guide the th...

With the help of tachyonic trapping mechanism one can potentially solve a number problems affecting quintessential inflation models. In this we introduce field with spontaneous symmetry breaking potential. When inflaton passes critical point, sudden burst particle production is able to reheat Universe and trap away from theminimum its However, self-interactions suppress reduce efficiency proces...

Contamination routes of Listeria monocytogenes were examined in a chilled food processing plant that produced ready-to-eat and ready-to-reheat meals during an 8-year period by amplified fragment length polymorphism (AFLP) analysis. A total of 319 L. monocytogenes isolates were recovered from raw materials (n = 18), the environment (n = 77), equipment (n = 193), and products (n = 31), and 18 dif...

A 2715 ft2 (252 m2), two story, residential home of the style typical of the Gaithersburg, Maryland area was constructed in 2012 to demonstrate technologies for net-zero energy (NZE) homes (or ZEH). The NIST Net-Zero Energy Residential Test Facility (NZERTF) functions as a laboratory to support the development and adoption of cost-effective NZE designs, technologies, construction methods, and b...

In this paper, a hybrid gravitational search algorithm (GSA) and pattern search (PS) technique is proposed for load frequency control (LFC) of multi-area power system. Initially, various conventional error criterions are considered, the PI controller parameters for a two-area power system are optimized employing GSA and the effect of objective function on system performance is analyzed. Then GS...

Moduli, modulini and gravitinos have gravitational-strength interactions, and particle collisions after reheating create all of them with roughly the same abundance. With the usual provisos, this leads to the well-known bound TR ∼ < 10 9 GeV on the reheat temperature. The vacuum fluctuation also creates these particles. It is shown that the abundance from this mechanism is lower than the one fr...