We report the construction, characterization, and evaluation of a novel system for photocatalytic hydrogen generation that comprises semiconductor (CdS) crystallites embedded in a polymer (Nafion) matrix that also contains a hydrogen-evolution catalyst (Pt). Hydrogen-production efficiencies from water containing a sacrificial electron donor (sulfide ion) were greater than those commonly obtaine...

two-layer metallic sheets have wide applications in aerospace, marine, automotive and domestic industries due to their superlative characteristics. in this paper, the formability of two-layer sheet is investigated through analytical, experimental and numerical approaches. an analytical model is developed based on marciniak-kuczynski method associated hill’s non-quadratic yield criterion. formin...

Daniel McDonald ([email protected]) Jose C Clemente ([email protected]) Justin Kuczynski ([email protected]) Jai Ram Rideout ([email protected]) Jesse Stombaugh ([email protected]) Doug Wendel ([email protected]) Andreas Wilke ([email protected]) Susan Huse ([email protected]) John Hufnagle ([email protected]) Folker Meyer ([email protected]) Rob Knight (rob.knight@c...

www.growthcommission.org [email protected] Commission on Growth and Development Montek Ahluwalia Edmar Bacha Dr. Boediono Lord John Browne Kemal Derviş Alejandro Foxley Goh Chok Tong Han Duck-soo Danuta Hübner Carin Jämtin Pedro-Pablo Kuczynski Danny Leipziger, Vice Chair Trevor Manuel Mahmoud Mohieldin Ngozi N. Okonjo-Iweala Robert Rubin Robert Solow Michael Spence, Chair Sir K....

The purpose of this investigation is to examine the viability of using the sheet metal for forming applications. Forming limit diagram (FLD) composed of negative and positive minor strain with respect to major strain which occurs at directional zero strain with the critical thickness of sheet metal. The negative minor strain region of FLD is predicted by localized necking. However there is no d...