At the World Summit on Sustainable Development (WSSD) in Johannesburg in 2002, the international community agreed to a target to halve the proportion of people who lack access to basic sanitation by 2015. Available information paints a grim picture of the water and sanitation conditions in much of the developing countries. The great majority of these people live in Asia and Africa. Over one-hal...

Tunable Diode Laser Absorption Tomography (TDLAT) is a non-intrusive measurement technique for determining two-dimensional spatially resolved distributions of temperature and species concentration in high enthalpy flows. TDLAT combines infrared laser absorption spectroscopy with tomographic image reconstruction. The TDLAT technique has been implemented at the University of Virginia's Aerospace ...

The Chamshir water conveyance tunnel (CWCT) with a length of 7.4 km and boring diameter of 5.3 m is excavated using a refurbished single shield TBM, initially designed to work in hard rock formations. This study focuses on engineering geological issues, which are important for checking the suitability of this machine and proposing required modifications for improving its performance in soft roc...

A new surgical technique for the treatment of adjacent soft tissue marginal recession is presented. This technique combines the use of a tunnel procedure with double lateral pedicle flaps to cover a connective tissue graft. This approach combines the advantages of the tunnel technique with the increased blood supply and protection provided by pedicle flaps. Indications include adjacent Class I ...