using of nanofluids and ducts with corrugated walls are both supposed to enhance heat transfer, by increasing the heat transfer fluid conductivity and the heat transfer area respectively. use of a diverging duct with a jet at inlet section may further increase heat transfer by creating recirculation zones inside the duct. in this work two-dimensional incompressible laminar flow of a nanofluid e...

The effect of corrosion on reinforced concrete structures can lead to significant economic losses. Therefore, steel bars used in the must be replaced with a different material that withstand water contact without causing and ensure safe operation structure during its lifespan, even adverse weather. Carbon-fibre-reinforced polymer (CFRP) are one materials replace they have already been applied a...

Ribbed bars are known for their enhanced bond to concrete. Their ribs make bar section variable along the axis and strain profile is as well, under any given applied force. Such has not been measured so far, thus stress its effect on global behavior of cannot be determined. Though optical fibers an effective means measure strains in structural members, application study still infancy. objective...

We evaluated the quality of seawater and ribbed mussels (Gukensia demissa) at six sites along the West Coast of Assateague Island National Seashore (ASIS), a barrier island popular with tourists and fishermen. Parameters evaluated were summertime temperature, pH, salinity, dissolved oxygen, total phosphorus, total ammonia nitrogen, and nitrite levels for seawater and total heterotrophic plate c...

Abstract Landforms and sediments on the palaeo–ice stream beds of central Alberta record glacitectonic raft production subsequent progressive disaggregation moulding, associated substrate ploughing, grooving. We identify a subglacial temporal or developmental hierarchy that begins with incipient rafts, including en échelon hill-hole complexes, pairs, strike-slip all which display patterns typic...

Billions of sleepers are used on railways around the world today. As importance in transportation sector is increasing, demand for also increasing. Although wooden and steel were rail systems past, today most widely sleeper type reinforced concrete sleepers. Among these sleepers, pre-stressed used, popular that can be produced many countries. The two main production methods ribbed system non-ri...