Local scouring in the downstream of hydraulic structures is one of the important issues in river and hydraulic engineering, which involves a lot of costs every year, so the prediction of the rate of scour is important in hydraulic design. Side weirs are the most important of hydraulic structures that are used in passing flow. This study investigate the scouring due to falling jet from side weir...

introduction: side weir structures are extensively used in hydraulic engineering, irrigation and environmental engineering, and it usually consists of a main weir and a lateral channel. side weirs are also used as an emergency structure. this structure is installed on one side or both sides of the main channel to divert the flow from the main channel to the side channel. lateral outflow takes p...

In this article, stream flow effectivness is based on hydraulic network studied in the shell-side of a shell and tube heat exchange as a case study. For an appropriate heat exchangers rating design to meet a specified duty, it's better to consider each stream flow separately. Using the hydraulic network principals, a set of the correlations for calculating different stream flow rates in the cro...

3,700,820 A 10/1972 Blasbalg et a1. 6,385,329 B1 5/2002 Sharma et a1. 6,580,694 B1 6/2003 Baker 6,584,125 B1 6/2003 Katto 6,728,678 B2 4/2004 Bhadkamkar et 211. 6,754,203 B2 6/2004 Wah et a1. 6,868,094 B1 3/2005 Bordonaro et a1. 6,956,871 B2 * 10/2005 Wang et a1. ................. .. 370/503 7,061,938 B2 6/2006 Hogeboom 7,260,220 B2 8/2007 Steenhof et a1. 7,295,578 B1 11/2007 Lyle et a1. 7,333,...

This paper proposes a client architecture for the Push to Talk over Cellular (PoC) service based on the Open Mobile Alliance (OMA) PoC specifications v1.0 release. We show that most standard VoIP modules can be reused for the PoC client, and the VoIP software can be easily extended to support PoC service. Then we present the detailed message flows between the PoC client and other network entiti...

Copper is a critical mineral resource and plays crucial role in social economic development. In China, the world’s largest copper consumer, footprints embodied transfers among sectors have not been studied sufficiently. Combing an environmentally extended input-output model complex network method, this paper systematically analyzes China’s consumption final demand production process. The resear...