various kinds of chemicals are used in papermaking to enhance paper properties and to improve efficiency of the production process. in the presence of cationic starch as an anionic charge catcher, effects of nano silica/cationic polyacrylamide complex on retention, drainage time, water volume drained by dynamic drainage jar and properties of paper recycled from old corrugated container were inv...

In this study the effects of corrugated absorber plate and using aerosol-carbon black nanofluid on heat transfer and turbulent flow in solar collectors with double application and air heating collectors, were numerically investigated. The two-dimensional continuity, momentum and energy equation were solved by finite volume and SIMPLE algorithm. In the present investigation all the simulations w...

Corresponding author: Junyong In, M.D., Department of Anesthesiology and Pain Medicine, Dongguk University Ilsan Hospital, 814, Siksadong, Ilsandong-gu, Goyang 410-773, Korea. Tel: 82-31-961-7875, Fax: 82-31-961-7864, E-mail: [email protected] This is an open-access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http:// creativecommons.org/lice...

The corrugated metal gasket is still in the early stages of development. However, contact flanges with a high surface roughness (more than 3.5 µm) leak and require lot force to tighten. A nickel or copper-coated was designed. water pressure test used measure leaks, results revealed that copper-covered gaskets performed better. effect temperature has not been explored this study, which only reve...

At present, research on prefabricated piers is limited to the axial compression state. However, many are under small eccentric in practical engineering. In this article, seismic performance of ultrahigh concrete (UHPC)-grouted corrugated pipe-connected was studied. A pseudostatic test carried out by using a pier column model connected with UHPC-grouted pipes. The failure mechanism plastic hinge...

St. Armands Key, a barrier island located in western Sarasota County in Florida, has had a history of chronic flooding. It is relatively low and bowl-shaped and has experienced flooding caused by both excessively high tides and rainfall events. The existing stormwater drainage system on the Key includes one pump station and gravity drainage pipes, which are not adequate to meet the level of ser...