Recent research efforts in taking pressure retarded osmosis closer to commercialization have concentrated on the development of osmosis-specific membranes. The module design, other hand, has not attracted much attention, although need for designs was identified, when traditional desalination were proven unfeasible applications. This work introduces a novel, design. submerged-helical is low pack...

A mass transfer model is proposed for prediction of permeate concentration and percent rejection at different inlet pressures and feed dye concentrations in membrane ultrafiltration. A differential equation in cylindrical co-ordinates considering the spiral wound membrane equivalent to a cylindrical module is derived which coupled with mass balance and permeate flux equations are solved to yiel...

Rings are common in disk galaxies. These rings are either indistinguishable from a pair of tightly wound spirals, or themselves are a part of the spiral structure. Furthermore, their occurrence is seen coincident with a bar in the center. In this paper, we interpret this spiral-ring structure as density waves resonantly excited by a rotating bar potential. The theory gives excellent agreement f...

In this study, a wastewater treatment plant (WWTP) in Vietnam receiving high-strength with COD of about 30,000 mg/L and various heavy metals from industries was treated by different RO membrane modules order to meet the stringent national discharge standard recover for reuse. The Fenton coagulation pre-treatments were employed based on optimal conditions, which experimentally pre-determined. Fo...

SPIRAL is a generator of optimized, platform-adapted libraries for digital signal processing algorithms. SPIRAL's strategy translates the implementation task into a search in an expanded space of alternatives. These result from the many degrees of freedom in the DSP algorithm itself and in the various coding choices. This paper describes the framework to represent and generate eeciently these a...

SPIRAL is a generator of optimized, platform-adapted libraries for digital signal processing algorithms. SPIRAL’s strategy translates the implementation task into a search in an expanded space of alternatives. These result from the many degrees of freedom in the DSP algorithm itself and in the various coding choices. This paper describes the framework to represent and generate efficiently these...

Chronic wound (CW) treatment by large is a burden for the government and society due to its high cost and time consuming treatment. It becomes more serious for the old age patient with the lack of moving flexibility. Proper wound recovery management is needed to resolve this problem. Careful and accurate documentation is required for identifying the patient’s improvement and or deterioration ti...