Reverse osmosis (RO). has become a standard unit operation in Chemical Engineering. This separation process can be used for a wide variety of applications including: desalination of sea water, treatment of industrial wastes, concentration of food products, and recovery of value materials from solution mixtures. In order to best utilize RO it is necessary to have a fundamental understanding of t...

In this report, experimental investigation of waste water treatment by reverse osmosis to enable its reuse in cooling tower is presented. A polyamide spiral wound RO membrane followed by three filters as RO pretreatment (two activated carbon and one cartridge filter) and samples of Tehran refinery treated waste water have been used. The effect of operating conditions such as pressure differ...

The development of the crossing transportation industry is currently increasing in island areas. use Ro-Ro type ferry boats extremely efficient moving people, goods, and vehicles. current research focuses on damage stability 500 DWT ferry, which aims to meet needs archipelago area. previously existing initial design a barge hull with main size Lpp = 40.15 m, B 12 H 3.2 T 2.15 m was used analyze...

BACKGROUND Ro/SS-A autoantibodies associated with systemic lupus erythematosus (SLE) and Sjögren syndrome may be missed during routine screening for antinuclear autoantibodies (ANA) by immunofluorescence using HEp-2 cells. AIMS To investigate the use of HEp-2 cells transfected with human 60 kDa Ro/SS-A for routine detection of these antibodies. METHODS 10,500 sera were screened at a dilutio...

Resumen. Una Red de Ordenamiento (RO) es un método de ordenamiento oblivious que permite ordenar N objetos mediante el uso de un número fijo de comparadores binarios los cuales están distribuidos en un orden predefinido. Por décadas, el diseño de las RO ha capturado la atención de muchos investigadores quienes han dedicado un gran esfuerzo por minimizar el número de comparadores para una entrad...

We investigate the relation between rotation periods $P_\mathrm{rot}$ and photometric modulation amplitudes $R_\mathrm{per}$ for $\approx 4,000$ Sun-like main-sequence stars observed by Kepler, using from McQuillan et al. (2014), effective temperature $T_\mathrm{eff}$ LAMOST DR6, parallax data Gaia EDR3. As has been suggested in previous works, we find that scaled convective turnover time $\tau...