The evolving role of voluntarism in ageing rural communities   总被引：1，自引：0，他引：1  

Mark W. Skinner  Alun E. Joseph 《New Zealand geographer》2007,63(2):119-129

  相似文献   

Participation and Governance in Regional Development: Global Trends in an Australian Context - Edited by Robyn Eversole and John Martin     

Mark  Beeson 《The Geographical journal》2007,173(2):191-192

  相似文献   

Incorporating gender and sexuality     

Mark  Casey 《The Geographical journal》2007,173(4):394-394

  相似文献   

Comparison of Factorial and Scenario Analysis Methods for Assessing Uncertainty in the Design of Permeable Reactive Barriers   总被引：1，自引：0，他引：1  

Brett D.M. Painter  Mark W. Milke 《Ground Water Monitoring & Remediation》2007,27(3):102-110

  相似文献   

Investigation of Reductive Dechlorination Supported by Natural Organic Carbon   总被引：1，自引：0，他引：1  

Heather V. Rectanus  Mark A. Widdowson  Francis H. Chapelle  Catherine A. Kelly  John T. Novak 《Ground Water Monitoring & Remediation》2007,27(4):53-62

  相似文献   

Introduction to the Special Issue of Marine Pollution Bulletin: Selected papers from the Fourth International Marine Environmental Modelling Seminar, Athens, Greece, October 2000     

Mark Reed  Kostas Nittis 《Marine pollution bulletin》2001,43(7-12):143-144

  相似文献   

Use of LIF for Real-Time In-Situ Mixed NAPL Source Zone Detection     

Mark L. Kram  Stephen H. Lieberman  Jerry Fee  Arturo A. Keller 《Ground Water Monitoring & Remediation》2001,21(1):67-76

The site characterization and analysis cone penetrometer system (SCAPS), equipped with realtime fluorophore detection capabilities, was used to delineate subsurface contaminant releases in an area where plating shop waste was temporarily stored. Records indicated that various nonaqueous phase liquids (NAPLs) were released at the site. The investigators advanced the SCAPS laser-induced fluorescence (LIF) sensor to depths beneath the water table of the principal water-bearing zone. The water table was located approximately 6 feet (1.8 m) below ground surface (bgs) across the site. Fluorescence, attributed to fuel compounds commingled with chlorinated solvents, was observed at depths ranging from 4.0 to 11.5 feet (1.2 to 3.5 m) bgs. Fluorescence, attributed to naturally occurring organic materials (by process of elimination and spectral characteristics) commingled with chlorinated solvent constituents, was observed at depths ranging from approximately 13 to 40 feet (4.0 to 12.2 m) bgs. Fluorescence responses from compounds confirmed to be commingled with chlorinated solvents indicates that the SCAPS fluorophore detection system is capable of indirectly delineating vadose zone and subaqueous chlorinated solvents and other dense nonaqueous phase liquids (DNAPLs) at contaminant release sites. This confirmation effort represents the first documented account of the successful application of LIF to identify a mixed DNAPL/LNAPL source zone.  相似文献   

Three‐dimensional flow structure around small‐scale bedforms in a simulated gravel‐bed environment     

Mark Lawless  Andr Robert 《地球表面变化过程与地形》2001,26(5):507-522

Pebble clusters are common small‐scale morphological features in gravel‐bed rivers, occupying as much as 10 per cent of the bed surface. Important links exist between the presence of pebble clusters and the development of flow structures. These links are poorly understood at the three‐dimensional level. Particularly neglected has been the effect of clusters on the lateral flow characteristics. A laboratory study was conducted using a hydraulic flume, within which simulated pebble clusters were superimposed onto a plane bed of gravel material. High‐resolution three‐dimensional flow data were collected above the bed at two different flow depths using an acoustic Doppler velocimeter. The results present evidence of the importance of lateral flow in the development of turbulent flow structure. Narrow regions of high lateral and downstream turbulence intensity exist to both sides of clusters and in a three‐dimensional separation zone in their lee. This may indicate the presence of horseshoe‐type vortical structures analogous to those identified in less hydraulically rough environments. However, it is likely that these structures are more complicated given the mutual interference of the surrounding medium. The lateral flow was also identified as a key component in the upwelling identified by other authors in the lee of pebble clusters. The results of the vertical flow analysis confirm the hypothesis that six regions with distinct vertical flow characteristics exist above clusters: flow acceleration up the stoss‐side of the cluster; recirculation behind the cluster in the wake region; vortex shedding from the pebble crest and shear layer; flow reattachment downstream of the cluster; upwelling of flow downstream of the point of reattachment; and recovery of flow. Copyright © 2001 John Wiley & Sons, Ltd.  相似文献   

Guest Editorial: Revealing the spaces of urban health     

James R. Dunn  Mark W. Rosenberg 《GeoJournal》2001,53(2):107-107

  相似文献   

Exploring the links between health and housing: The limitations of population health surveys     

Mark W. Rosenberg  Kathleen Wilson 《GeoJournal》2001,53(2):109-116

While it is intuitively attractive to link health status and the quality of housing, it is methodologically complex to identify the relative importance of housing because individual characteristics and environmental variables act as confounders. A secondary issue is that the data sets which contain detailed data on health status and environmental variables often contain only limited data on housing. Similarly, housing surveys rarely contain detailed data on health and environmental variables. Respondents from Montreal, Toronto and Vancouver in the public use micro-data files of the 1996/97 cycle of the National Population Health Survey make up the data sets for a series of logistic regression models where health status, allergies, asthma, arthritis, migraines and bronchitis/emphysema act as the dependent variables. Sets of variables which measure housing, the environment (smoking and alcohol consumption) and the socio-economic status of individuals are used as independent variables. The issues of confounders and the limitations of the data are illustrated by the results of the analysis. If we are to go beyond local area surveys and carry out broader analyses of the links between health status and the quality of housing, researchers and data collection agencies will need to re-think the artificial divisions between these two critical aspects of peoples' lives.  相似文献