Results 91 to 100 of about 19,764 (340)

Putting the wood back into our rivers: an experiment in river rehabilitation [PDF]

open access: yes, 2001
This paper presents an overview of a project established to assess the effectiveness of woody debris (WD) reintroduction as a river rehabilitation tool.
Abbe, T.B.   +4 more
core   +1 more source

The Carboniferous Southern Pennine Basin, UK [PDF]

open access: yes, 2014
Many of the Carboniferous outcrops located in the Derbyshire region of the Peak District National Park, UK, have provided sites for both significant and pioneering research relating to the clastic sedimentology of marine palaeoenvironments, particularly ...
Mountney, NP, Pringle, JK, Southern, SJ
core   +4 more sources

The extension of the taxon cycle model to island plants: insights from the Canarian vascular flora

open access: yesBiological Reviews, EarlyView.
ABSTRACT Taxon cycle models describe eco‐evolutionary patterns of lineage colonization, diversification, and decline across archipelagos, inferring an important role for competition amongst ecologically similar taxa in driving concurrent niche changes.
José María Fernández‐Palacios   +2 more
wiley   +1 more source

Gravel galore: Impacts of clear-cut logging on salmon and their habitats [PDF]

open access: yes, 2002
Timber harvest may have both direct and indirect effects on salmon, and with a few exceptions those effects result in lowered survival of salmon in their stream habitats compared with unlogged forest (Hicks et al. 1991b).
Hicks, Brendan J.
core   +1 more source

Catastrophic ice lake collapse in Aram Chaos, Mars

open access: yes, 2014
Hesperian chaotic terrains have been recognized as the source of outflow channels formed by catastrophic outflows. Four main scenarios have been proposed for the formation of chaotic terrains that involve different amounts of water and single or multiple
Kleinhans, Maarten G.   +3 more
core   +1 more source

Integrated Solutions Development Capital Solutions Interim Report Volume I: Report [PDF]

open access: yes, 1998
This report analyzes the water quality, flood, erosion, and integrated scores of multiple Austin watersheds, including Waller Creek.Waller Creek Working ...
Loomis & More, Inc.   +1 more
core   +1 more source

Exploring Tradeoffs in Syngas Production With Solid‐Oxide Electrolysis via Multi‐Objective Optimization

open access: yesChemie Ingenieur Technik, EarlyView.
This work applies multi‐objective optimization to investigate trade‐offs between different objectives in syngas production with solid‐oxide cell co‐electrolysis. Two system designs are investigated. By systematically exploring tradeoffs between different objectives, insights, and comparisons of the operation of these designs are achieved.
Gbenga Jerome   +6 more
wiley   +1 more source

Enhancements in reservoir flood risk mapping: example application for Ulley

open access: yes, 2014
In July 2007, at Ulley Reservoir, South Yorkshire, a catastrophic dam failure was narrowly avoided due to emergency preventative actions. During the event, a number of homes were evacuated and roads were closed for precautionary measures.
Geoff, Craig   +2 more
core   +1 more source

Composite membranes comprising of polymeric and molecular amines embedded in poly(vinyl alcohol) matrices to facilitate CO2/H2 separation

open access: yesThe Canadian Journal of Chemical Engineering, EarlyView.
Polymeric and molecular amines embedded in hygroscopic matrices to facilitate CO2 transport for CO2/H2 separation. Abstract This work dealt with composite membranes comprising of polyvinylamine (PVAm) and triethylenetetramine (TETA) embedded in poly(vinyl alcohol) (PVA) for CO2/H2 separation via facilitated transport of CO2, where polymeric and ...
Steve Yijie Hu, Kean Wang, Xianshe Feng
wiley   +1 more source

Temporal variation of clear-water scour at compound Abutments

open access: yesAin Shams Engineering Journal, 2016
Most of actual abutments in rivers are built on foundation, while there is limited number of study available on the effects of the foundation on the local scour.
Aminuddin Ab. Ghani, Reza Mohammadpour
doaj   +1 more source

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