Results 271 to 280 of about 1,207,920 (306)

Spatial Variability in Disturbed Boreal Ecosystems: Aboveground and Belowground Controls

2015
The recent open pit mining for oil sands in the Athabasca Oil Sands Region (AOSR), northern Alberta has created an unprecedented industrial scale disturbance whose ecological consequences is not well understood, and requires intensive investigation.
openaire   +1 more source

Tectonic control of fan size: the importance of spatially variable subsidence rates

Basin Research, 1996
We study the geophysical controls on the size of alluvial fans. Simple relationships between catchment characteristics, sediment yield, subsidence patterns and fan size are developed. As predicting fan size is essentially a conservation of mass problem, our analysis is general, applying to all types of fan landform. The importance of spatially variable
Kelin X. Whipple, Carolyn R. Trayler
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Controlling wave propagation in solids using spatially variable elastic anisotropy

Stress wave propagation in solids may be controlled through spatially variable anisotropy. Recently, there have been significant efforts to guide the incident stress waves in desired trajectories in order to protect a sensitive region within the material. Here we present our work on a composite material in which stress waves are guided through smoothly
Aref Tehranian, Alireza Amirkhizi, Sia Nemat-Nasser   +2 more
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Spatial and temporal variability in the structure of invertebrate assemblages in control stream mesocosms

Water Research, 2004
Outdoor stream mesocosm studies conducted between 1992 and 1996 at two facilities enabled the investigation of structural variability in invertebrate assemblages within and between studies. Temporal variability of benthic invertebrate assemblages between eight replicate streams within a study was assessed in a 28-day mesocosm study without chemical ...
Diana C L, Wong, Lorraine, Maltby, Don, Whittle, Philip, Warren, Philip B, Dorn   +4 more
openaire   +2 more sources

Biological Activity of Urban Soils: Spatial Variability and Control Factors

Eurasian Soil Science, 2022
O. Yu. Goncharova, O. V. Semenyuk, G. V. Matyshak, L. G. Bogatyrev   +3 more
openaire   +1 more source

Field Scale Variations in Soil Properties for Spatially Variable Control: A Review

Journal of Soil Contamination, 1998
This article reviews the widely scattered information on spatial variability of field-scale properties. It mainly addresses the variations in properties that influence nitrate accumulation and movement resulting from the agricultural activities in the root zone.
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A review and integrating analysis of Spatially-Variable Control of crop production

Fertilizer Research, 1992
The variability of crops, soils, and pests within crop production fields has led to attempts to understand those variations and to manage crop production accordingly. The rapidly expanding research and development on the management and control of crop production according to in-field variations is reviewed.
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Factors controlling the spatial and temporal variability of dust emissions

Chinese Journal of Geochemistry, 2006
John A. Gillies, William G. Nickling, Vicken Etyemezian, James King, Mark Sweeney   +4 more
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SPATIAL VARIABILITY OF AGRICULTURAL NONPOINT SOURCE POLLUTION CONTROL COSTS

Proceedings of the Water Environment Federation, 2000
Mark S. Landry, Darrell J. Bosch, James W. Pease   +2 more
openaire   +1 more source

Cervical cancer prevention and control in women living with human immunodeficiency virus

Ca-A Cancer Journal for Clinicians, 2021
Philip E Castle, Vikrant V Sahasrabuddhe
exaly