Results 201 to 210 of about 3,079 (263)

Visible‐Light‐Mediated Lewis Acid‐Catalyzed Diradical Hydrogen Atom Transfer Reaction of Enamides

open access: yesAdvanced Science, EarlyView.
The Lewis acid catalysis was crucial for the success of the DHAT reaction of enamides by lowering the energy of the triplet excited state and modulating the reactivity of the formed diradical intermediate in a carbon‐to‐carbon 1,5‐DHAT and consequent cyclization that allows the functionalization of C(sp3)−H bonds to construct a variety of novel β ...
Yao Huang   +5 more
wiley   +1 more source

Geogrid in Flexible Pavements

Transportation Research Record: Journal of the Transportation Research Board, 2008
Full-scale accelerated testing was used to provide new insight into quantifying the effectiveness of geogrids on low-volume flexible pavement performance. Although several previous studies report that geogrids improve pavement performance by enhancing structural capacity and reducing distress potential, the new study addresses how to maximize the ...
Imad L. Al-Qadi   +3 more
openaire   +1 more source

Perpetual pavement design for flexible pavements in the US

International Journal of Pavement Engineering, 2006
Long lasting asphalt pavements have been designed and constructed in the United States for many decades. Pavements that have avoided structural failure in the presence of heavy traffic and which require only periodic resurfacing are advantageous in terms of minimizing life cycle cost and user delays.
David H. Timm, David E. Newcomb
openaire   +1 more source

Home - About - Disclaimer - Privacy